remove radare2 onboarding

mostly ai generated, but I've tested it.

README.md

@@ -1,4 +1,7 @@
-![LibrePods Banner](/imgs/banner.png)
+>[!IMPORTANT]
+Development paused due to lack of time until 17th May 2026 (JEE Advanced). PRs and issues might not be responded to until then.
+
+![LibrePods Banner](./imgs/banner.png)
 
 ## What is LibrePods?
 
@@ -36,7 +39,7 @@ Most features should work with any AirPods. Currently, I've only got AirPods Pro
 ## Platform Support
 
 ### Linux
-for the old version see the [Linux README](/linux/README.md). (doesn't have many features, maintainer didn't have time to work on it)
+for the old version see the [Linux README](./linux/README.md). (doesn't have many features, maintainer didn't have time to work on it)
 
 new version in development ([#241](https://github.com/kavishdevar/librepods/pull/241))
 
@@ -46,13 +49,13 @@ new version in development ([#241](https://github.com/kavishdevar/librepods/pull
 
 #### Screenshots
 
-|                                                                                        |                                                   |                                                                             |
-| -------------------------------------------------------------------------------------- | ------------------------------------------------- | --------------------------------------------------------------------------- |
-| ![Settings 1](/android/imgs/settings-1.png)                                            | ![Settings 2](/android/imgs/settings-2.png)       | ![Debug Screen](/android/imgs/debug.png)                                    |
-| ![Battery Notification and QS Tile for NC Mode](/android/imgs/notification-and-qs.png) | ![Popup](/android/imgs/popup.png)                 | ![Head Tracking and Gestures](/android/imgs/head-tracking-and-gestures.png) |
-| ![Long Press Configuration](/android/imgs/long-press.png)                              | ![Widget](/android/imgs/widget.png)               | ![Customizations 1](/android/imgs/customizations-1.png)                     |
-| ![Customizations 2](/android/imgs/customizations-2.png)                                | ![accessibility](/android/imgs/accessibility.png) | ![transparency](/android/imgs/transparency.png)                             |
-| ![hearing-aid](/android/imgs/hearing-aid.png)                                          | ![hearing-test](/android/imgs/hearing-test.png)   | ![hearing-aid-adjustments](/android/imgs/hearing-aid-adjustments.png)       |
+|                                                                                         |                                                    |                                                                              |
+| --------------------------------------------------------------------------------------- | -------------------------------------------------- | ---------------------------------------------------------------------------- |
+| ![Settings 1](./android/imgs/settings-1.png)                                            | ![Settings 2](./android/imgs/settings-2.png)       | ![Debug Screen](./android/imgs/debug.png)                                    |
+| ![Battery Notification and QS Tile for NC Mode](./android/imgs/notification-and-qs.png) | ![Popup](./android/imgs/popup.png)                 | ![Head Tracking and Gestures](./android/imgs/head-tracking-and-gestures.png) |
+| ![Long Press Configuration](./android/imgs/long-press.png)                              | ![Widget](./android/imgs/widget.png)               | ![Customizations 1](./android/imgs/customizations-1.png)                     |
+| ![Customizations 2](./android/imgs/customizations-2.png)                                | ![accessibility](./android/imgs/accessibility.png) | ![transparency](./android/imgs/transparency.png)                             |
+| ![hearing-aid](./android/imgs/hearing-aid.png)                                          | ![hearing-test](./android/imgs/hearing-test.png)   | ![hearing-aid-adjustments](./android/imgs/hearing-aid-adjustments.png)       |
 
 
 here's a very unprofessional demo video
@@ -64,7 +67,7 @@ https://github.com/user-attachments/assets/43911243-0576-4093-8c55-89c1db5ea533
 If you are using ColorOS/OxygenOS 16, you don't need root except for customizing transparency mode, setting up hearing aid, and use Bluetooth Multipoint. Changing ANC, conversational awareness, ear detection, and other customizations will work without root. For everyone else:
 
 > [!CAUTION]
-> **You must have a rooted device with Xposed to use LibrePods on Android.** This is due to a [bug in the Android Bluetooth stack](https://issuetracker.google.com/issues/371713238). Please upvote the issue by clicking the '+1' icon on the IssueTracker page. I don't know a fix for Android versions <13 either. So, this needs a phone running A13+.
+> **You must have a rooted device with Xposed to use LibrePods on Android.** This is due to a [bug in the Android Bluetooth stack](https://issuetracker.google.com/issues/371713238). Please upvote the issue by clicking the '+1' icon on the IssueTracker page. DO NOT leave a +1 comment - use the +1 button in the top right of the page next to the "Hotlists" field.  Leaving +1 comment spam makes it impossible for developers to engage in the necessary technical discussion to implement this fix, and will disincentivize the responsible Google developers from engaging.  I don't know a fix for Android versions <13 either. So, this needs a phone running A13+.
 > 
 > There are **no exceptions** to the root requirement until Google/your OEM figures out a fix.
 
@@ -111,7 +114,7 @@ A huge thank you to everyone supporting the project!
 - @rithvikvibhu and folks over at lagrangepoint for helping with the hearing aid feature ([gist](https://gist.github.com/rithvikvibhu/45e24bbe5ade30125f152383daf07016))
 - @devnoname120 for helping with the first root patch
 - @timgromeyer for making the first version of the linux app
-- @hackclub for hosting [High Seas](https://highseas.hackclub.com) and [Low Skies](low-skies.hackclub.com)!
+- @hackclub for hosting [High Seas](https://highseas.hackclub.com) and [Low Skies](https://low-skies.hackclub.com)!
 
 ## Star History
 

android/app/src/main/AndroidManifest.xml

@@ -10,8 +10,6 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"
         tools:ignore="ForegroundServicesPolicy" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE" />
-    <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS"
-        tools:ignore="ProtectedPermissions" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

android/app/src/main/cpp/CMakeLists.txt

@@ -3,10 +3,32 @@ cmake_minimum_required(VERSION 3.22.1)
 project("l2c_fcr_hook")
 set(CMAKE_CXX_STANDARD 23)
 
-add_library(${CMAKE_PROJECT_NAME} SHARED
+add_library(l2c_fcr_hook SHARED
         l2c_fcr_hook.cpp
-        l2c_fcr_hook.h)
 
-target_link_libraries(${CMAKE_PROJECT_NAME}
+        xz/xz_crc32.c
+        xz/xz_crc64.c
+        xz/xz_sha256.c
+        xz/xz_dec_stream.c
+        xz/xz_dec_lzma2.c
+        xz/xz_dec_bcj.c
+)
+
+target_include_directories(l2c_fcr_hook PRIVATE
+        xz
+)
+
+target_compile_definitions(l2c_fcr_hook PRIVATE
+        XZ_DEC_X86
+        XZ_DEC_ARM
+        XZ_DEC_ARMTHUMB
+        XZ_DEC_ARM64
+        XZ_DEC_ANY_CHECK
+        XZ_USE_CRC64
+        XZ_USE_SHA256
+        XZ_DEC_CONCATENATED
+)
+
+target_link_libraries(l2c_fcr_hook
         android
-        log)
+        log)

android/app/src/main/cpp/l2c_fcr_hook.cpp

@@ -16,476 +16,309 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-#include <cstdint>
-#include <cstring>
-#include <dlfcn.h>
 #include <android/log.h>
-#include <fstream>
+#include <cstring>
 #include <string>
-#include <sys/system_properties.h>
-#include "l2c_fcr_hook.h"
-#include <cerrno>
-#include <cstdlib>
+#include <vector>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <elf.h>
 
-#define LOG_TAG "AirPodsHook"
+#include "l2c_fcr_hook.h"
+
+extern "C" {
+    #include "xz.h"
+}
+
+#define LOG_TAG "LibrePods"
 #define LOGI(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
 #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
 
 static HookFunType hook_func = nullptr;
-#define L2CEVT_L2CAP_CONFIG_REQ     4
-#define L2CEVT_L2CAP_CONFIG_RSP 15
 
-struct t_l2c_lcb;
-typedef struct _BT_HDR {
-    uint16_t event;
-    uint16_t len;
-    uint16_t offset;
-    uint16_t layer_specific;
-    uint8_t data[];
-} BT_HDR;
-
-typedef struct {
-    uint8_t mode;
-    uint8_t tx_win_sz;
-    uint8_t max_transmit;
-    uint16_t rtrans_tout;
-    uint16_t mon_tout;
-    uint16_t mps;
-} tL2CAP_FCR;
-
-// Flow spec structure
-typedef struct {
-    uint8_t  qos_present;
-    uint8_t  flow_direction;
-    uint8_t  service_type;
-    uint32_t token_rate;
-    uint32_t token_bucket_size;
-    uint32_t peak_bandwidth;
-    uint32_t latency;
-    uint32_t delay_variation;
-} FLOW_SPEC;
-
-// Configuration info structure
-typedef struct {
-    uint16_t result;
-    uint16_t mtu_present;
-    uint16_t mtu;
-    uint16_t flush_to_present;
-    uint16_t flush_to;
-    uint16_t qos_present;
-    FLOW_SPEC qos;
-    uint16_t fcr_present;
-    tL2CAP_FCR fcr;
-    uint16_t fcs_present;
-    uint16_t fcs;
-    uint16_t ext_flow_spec_present;
-    FLOW_SPEC ext_flow_spec;
-} tL2CAP_CFG_INFO;
-
-// Basic L2CAP link control block
-typedef struct {
-    bool wait_ack;
-    // Other FCR fields - not needed for our specific hook
-} tL2C_FCRB;
-
-// Forward declarations for needed types
-struct t_l2c_rcb;
-struct t_l2c_lcb;
-
-typedef struct t_l2c_ccb {
-    struct t_l2c_ccb* p_next_ccb;  // Next CCB in the chain
-    struct t_l2c_ccb* p_prev_ccb;  // Previous CCB in the chain
-    struct t_l2c_lcb* p_lcb;       // Link this CCB belongs to
-    struct t_l2c_rcb* p_rcb;       // Registration CB for this Channel
-    uint16_t local_cid;            // Local CID
-    uint16_t remote_cid;           // Remote CID
-    uint16_t p_lcb_next;           // For linking CCBs to an LCB
-    uint8_t ccb_priority;          // Channel priority
-    uint16_t tx_mps;               // MPS for outgoing messages
-    uint16_t max_rx_mtu;           // Max MTU we will receive
-    // State variables
-    bool in_use;                   // True when channel active
-    uint8_t chnl_state;            // Channel state
-    uint8_t local_id;              // Transaction ID for local trans
-    uint8_t remote_id;             // Transaction ID for remote
-    uint8_t timer_entry;           // Timer entry
-    uint8_t is_flushable;          // True if flushable
-    // Configuration variables
-    uint16_t our_cfg_bits;         // Bitmap of local config bits
-    uint16_t peer_cfg_bits;        // Bitmap of peer config bits
-    uint16_t config_done;          // Configuration bitmask
-    uint16_t remote_config_rsp_result; // Remote config response result
-    tL2CAP_CFG_INFO our_cfg;       // Our saved configuration options
-    tL2CAP_CFG_INFO peer_cfg;      // Peer's saved configuration options
-    // Additional control fields
-    uint8_t remote_credit_count;   // Credits sent to peer
-    tL2C_FCRB fcrb;                // FCR info
-    bool ecoc;                     // Enhanced Credit-based mode
-} tL2C_CCB;
-
-static uint8_t (*original_l2c_fcr_chk_chan_modes)(void* p_ccb) = nullptr;
-static void (*original_l2cu_process_our_cfg_req)(tL2C_CCB* p_ccb, tL2CAP_CFG_INFO* p_cfg) = nullptr;
-static void (*original_l2c_csm_config)(tL2C_CCB* p_ccb, uint8_t event, void* p_data) = nullptr;
-static void (*original_l2cu_send_peer_info_req)(tL2C_LCB* p_lcb, uint16_t info_type) = nullptr;
-
-// Add original pointer for BTA_DmSetLocalDiRecord
-static tBTA_STATUS (*original_BTA_DmSetLocalDiRecord)(tSDP_DI_RECORD* p_device_info, uint32_t* p_handle) = nullptr;
+static uint8_t (*original_l2c_fcr_chk_chan_modes)(void*) = nullptr;
+static tBTA_STATUS (*original_BTA_DmSetLocalDiRecord)(
+        tSDP_DI_RECORD*, uint32_t*) = nullptr;
 
 uint8_t fake_l2c_fcr_chk_chan_modes(void* p_ccb) {
-    LOGI("l2c_fcr_chk_chan_modes hooked, returning true.");
+    LOGI("l2c_fcr_chk_chan_modes hooked");
+    uint8_t orig = 0;
+    if (original_l2c_fcr_chk_chan_modes)
+        orig = original_l2c_fcr_chk_chan_modes(p_ccb);
+
+    LOGI("Original returned %d, forcing 1", orig);
     return 1;
 }
 
-void fake_l2cu_process_our_cfg_req(tL2C_CCB* p_ccb, tL2CAP_CFG_INFO* p_cfg) {
-    original_l2cu_process_our_cfg_req(p_ccb, p_cfg);
-    p_ccb->our_cfg.fcr.mode = 0x00;
-    LOGI("Set FCR mode to Basic Mode in outgoing config request");
-}
+tBTA_STATUS fake_BTA_DmSetLocalDiRecord(
+        tSDP_DI_RECORD* p_device_info,
+        uint32_t* p_handle) {
 
-void fake_l2c_csm_config(tL2C_CCB* p_ccb, uint8_t event, void* p_data) {
-    // Call the original function first to handle the specific code path where the FCR mode is checked
-    original_l2c_csm_config(p_ccb, event, p_data);
+    LOGI("BTA_DmSetLocalDiRecord hooked");
 
-    // Check if this happens during CONFIG_RSP event handling
-    if (event == L2CEVT_L2CAP_CONFIG_RSP) {
-        p_ccb->our_cfg.fcr.mode = p_ccb->peer_cfg.fcr.mode;
-        LOGI("Forced compatibility in l2c_csm_config: set our_mode=%d to match peer_mode=%d",
-             p_ccb->our_cfg.fcr.mode, p_ccb->peer_cfg.fcr.mode);
-    }
-}
-
-// Replacement function that does nothing
-void fake_l2cu_send_peer_info_req(tL2C_LCB* p_lcb, uint16_t info_type) {
-    LOGI("Intercepted l2cu_send_peer_info_req for info_type 0x%04x - doing nothing", info_type);
-    // Just return without doing anything
-    return;
-}
-
-// New loader for SDP hook offset (persist.librepods.sdp_offset)
-uintptr_t loadSdpOffset() {
-    const char* property_name = "persist.librepods.sdp_offset";
-    char value[PROP_VALUE_MAX] = {0};
-
-    int len = __system_property_get(property_name, value);
-    if (len > 0) {
-        LOGI("Read sdp offset from property: %s", value);
-        uintptr_t offset;
-        char* endptr = nullptr;
-
-        const char* parse_start = value;
-        if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) {
-            parse_start = value + 2;
-        }
-
-        errno = 0;
-        offset = strtoul(parse_start, &endptr, 16);
-
-        if (errno == 0 && endptr != parse_start && *endptr == '\0' && offset > 0) {
-            LOGI("Parsed sdp offset: 0x%x", offset);
-            return offset;
-        }
-
-        LOGE("Failed to parse sdp offset from property value: %s", value);
-    }
-
-    LOGI("No sdp offset property present - skipping SDP hook");
-    return 0;
-}
-
-// Fake BTA_DmSetLocalDiRecord: set vendor/vendor_id_source then call original
-tBTA_STATUS fake_BTA_DmSetLocalDiRecord(tSDP_DI_RECORD* p_device_info, uint32_t* p_handle) {
-    LOGI("BTA_DmSetLocalDiRecord hooked - forcing vendor fields");
     if (p_device_info) {
         p_device_info->vendor = 0x004C;
         p_device_info->vendor_id_source = 0x0001;
     }
-    LOGI("Set vendor=0x%04x, vendor_id_source=0x%04x", p_device_info->vendor, p_device_info->vendor_id_source);
-    if (original_BTA_DmSetLocalDiRecord) {
-        return original_BTA_DmSetLocalDiRecord(p_device_info, p_handle);
-    }
 
-    LOGE("Original BTA_DmSetLocalDiRecord not available");
+    if (original_BTA_DmSetLocalDiRecord)
+        return original_BTA_DmSetLocalDiRecord(p_device_info, p_handle);
+
     return BTA_FAILURE;
 }
 
-uintptr_t loadHookOffset([[maybe_unused]] const char* package_name) {
-    const char* property_name = "persist.librepods.hook_offset";
-    char value[PROP_VALUE_MAX] = {0};
+static bool decompressXZ(
+        const uint8_t* input,
+        size_t input_size,
+        std::vector<uint8_t>& output) {
 
-    int len = __system_property_get(property_name, value);
-    if (len > 0) {
-        LOGI("Read hook offset from property: %s", value);
-        uintptr_t offset;
-        char* endptr = nullptr;
+    xz_crc32_init();
+#ifdef XZ_USE_CRC64
+    xz_crc64_init();
+#endif
 
-        const char* parse_start = value;
-        if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) {
-            parse_start = value + 2;
+    struct xz_dec* dec = xz_dec_init(XZ_DYNALLOC, 64U << 20);
+    if (!dec) return false;
+
+    struct xz_buf buf{};
+    buf.in = input;
+    buf.in_pos = 0;
+    buf.in_size = input_size;
+
+    output.resize(input_size * 8);
+
+    buf.out = output.data();
+    buf.out_pos = 0;
+    buf.out_size = output.size();
+
+    while (true) {
+        enum xz_ret ret = xz_dec_run(dec, &buf);
+
+        if (ret == XZ_STREAM_END)
+            break;
+
+        if (ret != XZ_OK) {
+            xz_dec_end(dec);
+            return false;
         }
 
-        errno = 0;
-        offset = strtoul(parse_start, &endptr, 16);
-
-        if (errno == 0 && endptr != parse_start && *endptr == '\0' && offset > 0) {
-            LOGI("Parsed offset: 0x%x", offset);
-            return offset;
+        if (buf.out_pos == buf.out_size) {
+            size_t old = output.size();
+            output.resize(old * 2);
+            buf.out = output.data();
+            buf.out_size = output.size();
         }
-
-        LOGE("Failed to parse offset from property value: %s", value);
     }
 
-    LOGI("Using hardcoded fallback offset");
-    return 0x00a55e30;
+    output.resize(buf.out_pos);
+    xz_dec_end(dec);
+    return true;
 }
 
-uintptr_t loadL2cuProcessCfgReqOffset() {
-    const char* property_name = "persist.librepods.cfg_req_offset";
-    char value[PROP_VALUE_MAX] = {0};
+static bool getLibraryPath(const char* name, std::string& out) {
+    FILE* fp = fopen("/proc/self/maps", "r");
+    if (!fp) return false;
 
-    int len = __system_property_get(property_name, value);
-    if (len > 0) {
-        LOGI("Read l2cu_process_our_cfg_req offset from property: %s", value);
-        uintptr_t offset;
-        char* endptr = nullptr;
-
-        const char* parse_start = value;
-        if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) {
-            parse_start = value + 2;
-        }
-
-        errno = 0;
-        offset = strtoul(parse_start, &endptr, 16);
-
-        if (errno == 0 && endptr != parse_start && *endptr == '\0' && offset > 0) {
-            LOGI("Parsed l2cu_process_our_cfg_req offset: 0x%x", offset);
-            return offset;
-        }
-
-        LOGE("Failed to parse l2cu_process_our_cfg_req offset from property value: %s", value);
-    }
-
-    // Return 0 if not found - we'll skip this hook
-    return 0;
-}
-
-uintptr_t loadL2cCsmConfigOffset() {
-    const char* property_name = "persist.librepods.csm_config_offset";
-    char value[PROP_VALUE_MAX] = {0};
-
-    int len = __system_property_get(property_name, value);
-    if (len > 0) {
-        LOGI("Read l2c_csm_config offset from property: %s", value);
-        uintptr_t offset;
-        char* endptr = nullptr;
-
-        const char* parse_start = value;
-        if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) {
-            parse_start = value + 2;
-        }
-
-        errno = 0;
-        offset = strtoul(parse_start, &endptr, 16);
-
-        if (errno == 0 && endptr != parse_start && *endptr == '\0' && offset > 0) {
-            LOGI("Parsed l2c_csm_config offset: 0x%x", offset);
-            return offset;
-        }
-
-        LOGE("Failed to parse l2c_csm_config offset from property value: %s", value);
-    }
-
-    // Return 0 if not found - we'll skip this hook
-    return 0;
-}
-
-uintptr_t loadL2cuSendPeerInfoReqOffset() {
-    const char* property_name = "persist.librepods.peer_info_req_offset";
-    char value[PROP_VALUE_MAX] = {0};
-
-    int len = __system_property_get(property_name, value);
-    if (len > 0) {
-        LOGI("Read l2cu_send_peer_info_req offset from property: %s", value);
-        uintptr_t offset;
-        char* endptr = nullptr;
-
-        const char* parse_start = value;
-        if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) {
-            parse_start = value + 2;
-        }
-
-        errno = 0;
-        offset = strtoul(parse_start, &endptr, 16);
-
-        if (errno == 0 && endptr != parse_start && *endptr == '\0' && offset > 0) {
-            LOGI("Parsed l2cu_send_peer_info_req offset: 0x%x", offset);
-            return offset;
-        }
-
-        LOGE("Failed to parse l2cu_send_peer_info_req offset from property value: %s", value);
-    }
-
-    // Return 0 if not found - we'll skip this hook
-    return 0;
-}
-
-uintptr_t getModuleBase(const char *module_name) {
-    FILE *fp;
     char line[1024];
-    uintptr_t base_addr = 0;
-
-    fp = fopen("/proc/self/maps", "r");
-    if (!fp) {
-        LOGE("Failed to open /proc/self/maps");
-        return 0;
-    }
 
     while (fgets(line, sizeof(line), fp)) {
-        if (strstr(line, module_name)) {
-            char *start_addr_str = line;
-            char *end_addr_str = strchr(line, '-');
-            if (end_addr_str) {
-                *end_addr_str = '\0';
-                base_addr = strtoull(start_addr_str, nullptr, 16);
-                break;
+        if (strstr(line, name)) {
+            char* path = strchr(line, '/');
+            if (path) {
+                out = path;
+                out.erase(out.find('\n'));
+                fclose(fp);
+                return true;
             }
         }
     }
 
     fclose(fp);
-    return base_addr;
+    return false;
 }
 
-bool findAndHookFunction(const char *library_name) {
+static uintptr_t getModuleBase(const char* name) {
+    FILE* fp = fopen("/proc/self/maps", "r");
+    if (!fp) return 0;
+
+    char line[1024];
+    uintptr_t base = 0;
+
+    while (fgets(line, sizeof(line), fp)) {
+        if (strstr(line, name)) {
+            base = strtoull(line, nullptr, 16);
+            break;
+        }
+    }
+
+    fclose(fp);
+    return base;
+}
+
+static uint64_t findSymbolOffset(
+        const std::vector<uint8_t>& elf,
+        const char* symbol_substring) {
+
+    auto* eh = reinterpret_cast<const Elf64_Ehdr*>(elf.data());
+    auto* shdr = reinterpret_cast<const Elf64_Shdr*>(
+            elf.data() + eh->e_shoff);
+
+    const char* shstr =
+            reinterpret_cast<const char*>(
+                    elf.data() + shdr[eh->e_shstrndx].sh_offset);
+
+    const Elf64_Shdr* symtab = nullptr;
+    const Elf64_Shdr* strtab = nullptr;
+
+    for (int i = 0; i < eh->e_shnum; ++i) {
+        const char* secname = shstr + shdr[i].sh_name;
+        if (!strcmp(secname, ".symtab"))
+            symtab = &shdr[i];
+        if (!strcmp(secname, ".strtab"))
+            strtab = &shdr[i];
+    }
+
+    if (!symtab || !strtab)
+        return 0;
+
+    auto* symbols = reinterpret_cast<const Elf64_Sym*>(
+            elf.data() + symtab->sh_offset);
+
+    const char* strings =
+            reinterpret_cast<const char*>(
+                    elf.data() + strtab->sh_offset);
+
+    size_t count = symtab->sh_size / sizeof(Elf64_Sym);
+
+    for (size_t i = 0; i < count; ++i) {
+        const char* name = strings + symbols[i].st_name;
+
+        if (strstr(name, symbol_substring) &&
+            ELF64_ST_TYPE(symbols[i].st_info) == STT_FUNC) {
+
+            LOGI("Resolved %s at 0x%lx",
+                 name,
+                 (unsigned long)symbols[i].st_value);
+
+            return symbols[i].st_value;
+        }
+    }
+
+    return 0;
+}
+
+static bool hookLibrary(const char* libname) {
+
     if (!hook_func) {
-        LOGE("Hook function not initialized");
+        LOGE("hook_func not initialized");
         return false;
     }
 
-    uintptr_t base_addr = getModuleBase(library_name);
-    if (!base_addr) {
-        LOGE("Failed to get base address of %s", library_name);
+    std::string path;
+    if (!getLibraryPath(libname, path)) {
+        LOGE("Failed to locate %s", libname);
         return false;
     }
 
-    // Load all offsets from system properties - no hardcoding
-    uintptr_t l2c_fcr_offset = loadHookOffset(nullptr);
-    uintptr_t l2cu_process_our_cfg_req_offset = loadL2cuProcessCfgReqOffset();
-    uintptr_t l2c_csm_config_offset = loadL2cCsmConfigOffset();
-    uintptr_t l2cu_send_peer_info_req_offset = loadL2cuSendPeerInfoReqOffset();
-    uintptr_t sdp_offset = loadSdpOffset();
+    int fd = open(path.c_str(), O_RDONLY);
+    if (fd < 0) return false;
 
-    bool success = false;
-
-    // Hook l2c_fcr_chk_chan_modes - this is our primary hook
-    if (l2c_fcr_offset > 0) {
-        void* target = reinterpret_cast<void*>(base_addr + l2c_fcr_offset);
-        LOGI("Hooking l2c_fcr_chk_chan_modes at offset: 0x%x, base: %p, target: %p",
-             l2c_fcr_offset, (void*)base_addr, target);
-
-        int result = hook_func(target, (void*)fake_l2c_fcr_chk_chan_modes, (void**)&original_l2c_fcr_chk_chan_modes);
-        if (result != 0) {
-            LOGE("Failed to hook l2c_fcr_chk_chan_modes, error: %d", result);
-            return false;
-        }
-        LOGI("Successfully hooked l2c_fcr_chk_chan_modes");
-        success = true;
-    } else {
-        LOGE("No valid offset for l2c_fcr_chk_chan_modes found, cannot proceed");
+    struct stat st{};
+    if (fstat(fd, &st) != 0) {
+        close(fd);
         return false;
     }
 
-    // Hook l2cu_process_our_cfg_req if offset is available
-    if (l2cu_process_our_cfg_req_offset > 0) {
-        void* target = reinterpret_cast<void*>(base_addr + l2cu_process_our_cfg_req_offset);
-        LOGI("Hooking l2cu_process_our_cfg_req at offset: 0x%x, base: %p, target: %p",
-             l2cu_process_our_cfg_req_offset, (void*)base_addr, target);
+    std::vector<uint8_t> file(st.st_size);
+    read(fd, file.data(), st.st_size);
+    close(fd);
 
-        int result = hook_func(target, (void*)fake_l2cu_process_our_cfg_req, (void**)&original_l2cu_process_our_cfg_req);
-        if (result != 0) {
-            LOGE("Failed to hook l2cu_process_our_cfg_req, error: %d", result);
-            // Continue even if this hook fails
-        } else {
-            LOGI("Successfully hooked l2cu_process_our_cfg_req");
+    auto* eh = reinterpret_cast<Elf64_Ehdr*>(file.data());
+    auto* shdr = reinterpret_cast<Elf64_Shdr*>(
+            file.data() + eh->e_shoff);
+
+    const char* shstr =
+            reinterpret_cast<const char*>(
+                    file.data() + shdr[eh->e_shstrndx].sh_offset);
+
+    for (int i = 0; i < eh->e_shnum; ++i) {
+
+        if (!strcmp(shstr + shdr[i].sh_name, ".gnu_debugdata")) {
+
+            std::vector<uint8_t> compressed(
+                    file.begin() + shdr[i].sh_offset,
+                    file.begin() + shdr[i].sh_offset + shdr[i].sh_size);
+
+            std::vector<uint8_t> decompressed;
+
+            if (!decompressXZ(
+                    compressed.data(),
+                    compressed.size(),
+                    decompressed))
+                return false;
+
+            uintptr_t base = getModuleBase(libname);
+            if (!base) return false;
+
+            uint64_t chk_offset =
+                    findSymbolOffset(decompressed,
+                                     "l2c_fcr_chk_chan_modes");
+
+            uint64_t sdp_offset =
+                    findSymbolOffset(decompressed,
+                                     "BTA_DmSetLocalDiRecord");
+
+            if (chk_offset) {
+                void* target =
+                        reinterpret_cast<void*>(base + chk_offset);
+
+                hook_func(target,
+                          (void*)fake_l2c_fcr_chk_chan_modes,
+                          (void**)&original_l2c_fcr_chk_chan_modes);
+
+                LOGI("Hooked l2c_fcr_chk_chan_modes");
+            }
+
+            if (sdp_offset) {
+                void* target =
+                        reinterpret_cast<void*>(base + sdp_offset);
+
+                hook_func(target,
+                          (void*)fake_BTA_DmSetLocalDiRecord,
+                          (void**)&original_BTA_DmSetLocalDiRecord);
+
+                LOGI("Hooked BTA_DmSetLocalDiRecord");
+            }
+
+            return true;
         }
-    } else {
-        LOGI("Skipping l2cu_process_our_cfg_req hook as offset is not available");
     }
 
-    // Hook l2c_csm_config if offset is available
-    if (l2c_csm_config_offset > 0) {
-        void* target = reinterpret_cast<void*>(base_addr + l2c_csm_config_offset);
-        LOGI("Hooking l2c_csm_config at offset: 0x%x, base: %p, target: %p",
-             l2c_csm_config_offset, (void*)base_addr, target);
-
-        int result = hook_func(target, (void*)fake_l2c_csm_config, (void**)&original_l2c_csm_config);
-        if (result != 0) {
-            LOGE("Failed to hook l2c_csm_config, error: %d", result);
-            // Continue even if this hook fails
-        } else {
-            LOGI("Successfully hooked l2c_csm_config");
-        }
-    } else {
-        LOGI("Skipping l2c_csm_config hook as offset is not available");
-    }
-
-    // Hook l2cu_send_peer_info_req if offset is available
-    if (l2cu_send_peer_info_req_offset > 0) {
-        void* target = reinterpret_cast<void*>(base_addr + l2cu_send_peer_info_req_offset);
-        LOGI("Hooking l2cu_send_peer_info_req at offset: 0x%x, base: %p, target: %p",
-             l2cu_send_peer_info_req_offset, (void*)base_addr, target);
-
-        int result = hook_func(target, (void*)fake_l2cu_send_peer_info_req, (void**)&original_l2cu_send_peer_info_req);
-        if (result != 0) {
-            LOGE("Failed to hook l2cu_send_peer_info_req, error: %d", result);
-            // Continue even if this hook fails
-        } else {
-            LOGI("Successfully hooked l2cu_send_peer_info_req");
-        }
-    } else {
-        LOGI("Skipping l2cu_send_peer_info_req hook as offset is not available");
-    }
-
-    if (sdp_offset > 0) {
-        void* target = reinterpret_cast<void*>(base_addr + sdp_offset);
-        LOGI("Hooking BTA_DmSetLocalDiRecord at offset: 0x%x, base: %p, target: %p",
-             sdp_offset, (void*)base_addr, target);
-
-        int result = hook_func(target, (void*)fake_BTA_DmSetLocalDiRecord, (void**)&original_BTA_DmSetLocalDiRecord);
-        if (result != 0) {
-            LOGE("Failed to hook BTA_DmSetLocalDiRecord, error: %d", result);
-        } else {
-            LOGI("Successfully hooked BTA_DmSetLocalDiRecord (SDP)");
-        }
-    } else {
-        LOGI("Skipping BTA_DmSetLocalDiRecord hook as sdp offset is not available");
-    }
-
-    return success;
+    return false;
 }
 
-void on_library_loaded(const char *name, [[maybe_unused]] void *handle) {
+static void on_library_loaded(const char* name, void*) {
+
     if (strstr(name, "libbluetooth_jni.so")) {
-        LOGI("Detected Bluetooth JNI library: %s", name);
+        LOGI("Bluetooth JNI loaded");
+        hookLibrary("libbluetooth_jni.so");
+    }
 
-        bool hooked = findAndHookFunction("libbluetooth_jni.so");
-        if (!hooked) {
-            LOGE("Failed to hook Bluetooth JNI library function");
-        }
-    } else if (strstr(name, "libbluetooth_qti.so")) {
-        LOGI("Detected Bluetooth QTI library: %s", name);
-
-        bool hooked = findAndHookFunction("libbluetooth_qti.so");
-        if (!hooked) {
-            LOGE("Failed to hook Bluetooth QTI library function");
-        }
+    if (strstr(name, "libbluetooth_qti.so")) {
+        LOGI("Bluetooth QTI loaded");
+        hookLibrary("libbluetooth_qti.so");
     }
 }
 
-extern "C" [[gnu::visibility("default")]] [[gnu::used]]
+extern "C"
+[[gnu::visibility("default")]]
+[[gnu::used]]
 NativeOnModuleLoaded native_init(const NativeAPIEntries* entries) {
-    LOGI("L2C FCR Hook module initialized");
 
-    hook_func = entries->hook_func;
+    LOGI("LibrePods initialized");
+
+    hook_func = (HookFunType)entries->hook_func;
 
     return on_library_loaded;
-}
+}

android/app/src/main/cpp/l2c_fcr_hook.h

@@ -1,50 +1,52 @@
-#pragma once
+/*
+    LibrePods - AirPods liberated from Apple’s ecosystem
+    Copyright (C) 2025 LibrePods contributors
 
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#pragma once
 #include <cstdint>
-#include <vector>
 
 typedef int (*HookFunType)(void *func, void *replace, void **backup);
 
-typedef int (*UnhookFunType)(void *func);
-
 typedef void (*NativeOnModuleLoaded)(const char *name, void *handle);
 
 typedef struct {
     uint32_t version;
-    HookFunType hook_func;
-    UnhookFunType unhook_func;
+    void* hook_func;
+    void* unhook_func;
 } NativeAPIEntries;
 
-[[maybe_unused]] typedef NativeOnModuleLoaded (*NativeInit)(const NativeAPIEntries *entries);
-
-typedef struct t_l2c_ccb tL2C_CCB;
-typedef struct t_l2c_lcb tL2C_LCB;
-
-uintptr_t loadHookOffset(const char* package_name);
-uintptr_t getModuleBase(const char *module_name);
-uintptr_t loadL2cuProcessCfgReqOffset();
-uintptr_t loadL2cCsmConfigOffset();
-uintptr_t loadL2cuSendPeerInfoReqOffset();
-bool findAndHookFunction(const char *library_path);
-
-#define SDP_MAX_ATTR_LEN 400
-
-typedef struct t_sdp_di_record {
-  uint16_t vendor;
-  uint16_t vendor_id_source;
-  uint16_t product;
-  uint16_t version;
-  bool primary_record;
-  char client_executable_url[SDP_MAX_ATTR_LEN];
-  char service_description[SDP_MAX_ATTR_LEN];
-  char documentation_url[SDP_MAX_ATTR_LEN];
-} tSDP_DI_RECORD;
+typedef NativeOnModuleLoaded (*NativeInit)(const NativeAPIEntries *entries);
 
 typedef enum : uint8_t {
-  BTA_SUCCESS = 0, /* Successful operation. */
-  BTA_FAILURE = 1, /* Generic failure. */
-  BTA_PENDING = 2, /* API cannot be completed right now */
-  BTA_BUSY = 3,
-  BTA_NO_RESOURCES = 4,
-  BTA_WRONG_MODE = 5,
-} tBTA_STATUS;
+    BTA_SUCCESS = 0, /* Successful operation. */
+    BTA_FAILURE = 1, /* Generic failure. */
+    BTA_PENDING = 2, /* API cannot be completed right now */
+    BTA_BUSY = 3,
+    BTA_NO_RESOURCES = 4,
+    BTA_WRONG_MODE = 5,
+} tBTA_STATUS;
+
+typedef struct t_sdp_di_record {
+    uint16_t vendor;
+    uint16_t vendor_id_source;
+    uint16_t product;
+    uint16_t version;
+    bool primary_record;
+    char client_executable_url[400];
+    char service_description[400];
+    char documentation_url[400];
+} tSDP_DI_RECORD;

android/app/src/main/cpp/xz/xz.h

@@ -0,0 +1,448 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/*
+ * XZ decompressor
+ *
+ * Authors: Lasse Collin <lasse.collin@tukaani.org>
+ *          Igor Pavlov <https://7-zip.org/>
+ */
+
+#ifndef XZ_H
+#define XZ_H
+
+#ifdef __KERNEL__
+#	include <linux/stddef.h>
+#	include <linux/types.h>
+#else
+#	include <stddef.h>
+#	include <stdint.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* "#define XZ_EXTERN static" can be used to make extern functions static. */
+#ifndef XZ_EXTERN
+#	define XZ_EXTERN extern
+#endif
+
+/**
+ * enum xz_mode - Operation mode
+ *
+ * @XZ_SINGLE:              Single-call mode. This uses less RAM than
+ *                          multi-call modes, because the LZMA2
+ *                          dictionary doesn't need to be allocated as
+ *                          part of the decoder state. All required data
+ *                          structures are allocated at initialization,
+ *                          so xz_dec_run() cannot return XZ_MEM_ERROR.
+ * @XZ_PREALLOC:            Multi-call mode with preallocated LZMA2
+ *                          dictionary buffer. All data structures are
+ *                          allocated at initialization, so xz_dec_run()
+ *                          cannot return XZ_MEM_ERROR.
+ * @XZ_DYNALLOC:            Multi-call mode. The LZMA2 dictionary is
+ *                          allocated once the required size has been
+ *                          parsed from the stream headers. If the
+ *                          allocation fails, xz_dec_run() will return
+ *                          XZ_MEM_ERROR.
+ *
+ * It is possible to enable support only for a subset of the above
+ * modes at compile time by defining XZ_DEC_SINGLE, XZ_DEC_PREALLOC,
+ * or XZ_DEC_DYNALLOC. The xz_dec kernel module is always compiled
+ * with support for all operation modes, but the preboot code may
+ * be built with fewer features to minimize code size.
+ */
+enum xz_mode {
+	XZ_SINGLE,
+	XZ_PREALLOC,
+	XZ_DYNALLOC
+};
+
+/**
+ * enum xz_ret - Return codes
+ * @XZ_OK:                  Everything is OK so far. More input or more
+ *                          output space is required to continue. This
+ *                          return code is possible only in multi-call mode
+ *                          (XZ_PREALLOC or XZ_DYNALLOC).
+ * @XZ_STREAM_END:          Operation finished successfully.
+ * @XZ_UNSUPPORTED_CHECK:   Integrity check type is not supported. Decoding
+ *                          is still possible in multi-call mode by simply
+ *                          calling xz_dec_run() again.
+ *                          Note that this return value is used only if
+ *                          XZ_DEC_ANY_CHECK was defined at build time,
+ *                          which is not used in the kernel. Unsupported
+ *                          check types return XZ_OPTIONS_ERROR if
+ *                          XZ_DEC_ANY_CHECK was not defined at build time.
+ * @XZ_MEM_ERROR:           Allocating memory failed. This return code is
+ *                          possible only if the decoder was initialized
+ *                          with XZ_DYNALLOC. The amount of memory that was
+ *                          tried to be allocated was no more than the
+ *                          dict_max argument given to xz_dec_init().
+ * @XZ_MEMLIMIT_ERROR:      A bigger LZMA2 dictionary would be needed than
+ *                          allowed by the dict_max argument given to
+ *                          xz_dec_init(). This return value is possible
+ *                          only in multi-call mode (XZ_PREALLOC or
+ *                          XZ_DYNALLOC); the single-call mode (XZ_SINGLE)
+ *                          ignores the dict_max argument.
+ * @XZ_FORMAT_ERROR:        File format was not recognized (wrong magic
+ *                          bytes).
+ * @XZ_OPTIONS_ERROR:       This implementation doesn't support the requested
+ *                          compression options. In the decoder this means
+ *                          that the header CRC32 matches, but the header
+ *                          itself specifies something that we don't support.
+ * @XZ_DATA_ERROR:          Compressed data is corrupt.
+ * @XZ_BUF_ERROR:           Cannot make any progress. Details are slightly
+ *                          different between multi-call and single-call
+ *                          mode; more information below.
+ *
+ * In multi-call mode, XZ_BUF_ERROR is returned when two consecutive calls
+ * to XZ code cannot consume any input and cannot produce any new output.
+ * This happens when there is no new input available, or the output buffer
+ * is full while at least one output byte is still pending. Assuming your
+ * code is not buggy, you can get this error only when decoding a compressed
+ * stream that is truncated or otherwise corrupt.
+ *
+ * In single-call mode, XZ_BUF_ERROR is returned only when the output buffer
+ * is too small or the compressed input is corrupt in a way that makes the
+ * decoder produce more output than the caller expected. When it is
+ * (relatively) clear that the compressed input is truncated, XZ_DATA_ERROR
+ * is used instead of XZ_BUF_ERROR.
+ */
+enum xz_ret {
+	XZ_OK,
+	XZ_STREAM_END,
+	XZ_UNSUPPORTED_CHECK,
+	XZ_MEM_ERROR,
+	XZ_MEMLIMIT_ERROR,
+	XZ_FORMAT_ERROR,
+	XZ_OPTIONS_ERROR,
+	XZ_DATA_ERROR,
+	XZ_BUF_ERROR
+};
+
+/**
+ * struct xz_buf - Passing input and output buffers to XZ code
+ * @in:         Beginning of the input buffer. This may be NULL if and only
+ *              if in_pos is equal to in_size.
+ * @in_pos:     Current position in the input buffer. This must not exceed
+ *              in_size.
+ * @in_size:    Size of the input buffer
+ * @out:        Beginning of the output buffer. This may be NULL if and only
+ *              if out_pos is equal to out_size.
+ * @out_pos:    Current position in the output buffer. This must not exceed
+ *              out_size.
+ * @out_size:   Size of the output buffer
+ *
+ * Only the contents of the output buffer from out[out_pos] onward, and
+ * the variables in_pos and out_pos are modified by the XZ code.
+ */
+struct xz_buf {
+	const uint8_t *in;
+	size_t in_pos;
+	size_t in_size;
+
+	uint8_t *out;
+	size_t out_pos;
+	size_t out_size;
+};
+
+/*
+ * struct xz_dec - Opaque type to hold the XZ decoder state
+ */
+struct xz_dec;
+
+/**
+ * xz_dec_init() - Allocate and initialize a XZ decoder state
+ * @mode:       Operation mode
+ * @dict_max:   Maximum size of the LZMA2 dictionary (history buffer) for
+ *              multi-call decoding. This is ignored in single-call mode
+ *              (mode == XZ_SINGLE). LZMA2 dictionary is always 2^n bytes
+ *              or 2^n + 2^(n-1) bytes (the latter sizes are less common
+ *              in practice), so other values for dict_max don't make sense.
+ *              In the kernel, dictionary sizes of 64 KiB, 128 KiB, 256 KiB,
+ *              512 KiB, and 1 MiB are probably the only reasonable values,
+ *              except for kernel and initramfs images where a bigger
+ *              dictionary can be fine and useful.
+ *
+ * Single-call mode (XZ_SINGLE): xz_dec_run() decodes the whole stream at
+ * once. The caller must provide enough output space or the decoding will
+ * fail. The output space is used as the dictionary buffer, which is why
+ * there is no need to allocate the dictionary as part of the decoder's
+ * internal state.
+ *
+ * Because the output buffer is used as the workspace, streams encoded using
+ * a big dictionary are not a problem in single-call mode. It is enough that
+ * the output buffer is big enough to hold the actual uncompressed data; it
+ * can be smaller than the dictionary size stored in the stream headers.
+ *
+ * Multi-call mode with preallocated dictionary (XZ_PREALLOC): dict_max bytes
+ * of memory is preallocated for the LZMA2 dictionary. This way there is no
+ * risk that xz_dec_run() could run out of memory, since xz_dec_run() will
+ * never allocate any memory. Instead, if the preallocated dictionary is too
+ * small for decoding the given input stream, xz_dec_run() will return
+ * XZ_MEMLIMIT_ERROR. Thus, it is important to know what kind of data will be
+ * decoded to avoid allocating excessive amount of memory for the dictionary.
+ *
+ * Multi-call mode with dynamically allocated dictionary (XZ_DYNALLOC):
+ * dict_max specifies the maximum allowed dictionary size that xz_dec_run()
+ * may allocate once it has parsed the dictionary size from the stream
+ * headers. This way excessive allocations can be avoided while still
+ * limiting the maximum memory usage to a sane value to prevent running the
+ * system out of memory when decompressing streams from untrusted sources.
+ *
+ * On success, xz_dec_init() returns a pointer to struct xz_dec, which is
+ * ready to be used with xz_dec_run(). If memory allocation fails,
+ * xz_dec_init() returns NULL.
+ */
+XZ_EXTERN struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max);
+
+/**
+ * xz_dec_run() - Run the XZ decoder for a single XZ stream
+ * @s:          Decoder state allocated using xz_dec_init()
+ * @b:          Input and output buffers
+ *
+ * The possible return values depend on build options and operation mode.
+ * See enum xz_ret for details.
+ *
+ * Note that if an error occurs in single-call mode (return value is not
+ * XZ_STREAM_END), b->in_pos and b->out_pos are not modified and the
+ * contents of the output buffer from b->out[b->out_pos] onward are
+ * undefined. This is true even after XZ_BUF_ERROR, because with some filter
+ * chains, there may be a second pass over the output buffer, and this pass
+ * cannot be properly done if the output buffer is truncated. Thus, you
+ * cannot give the single-call decoder a too small buffer and then expect to
+ * get that amount valid data from the beginning of the stream. You must use
+ * the multi-call decoder if you don't want to uncompress the whole stream.
+ *
+ * Use xz_dec_run() when XZ data is stored inside some other file format.
+ * The decoding will stop after one XZ stream has been decompressed. To
+ * decompress regular .xz files which might have multiple concatenated
+ * streams, use xz_dec_catrun() instead.
+ */
+XZ_EXTERN enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b);
+
+/**
+ * xz_dec_catrun() - Run the XZ decoder with support for concatenated streams
+ * @s:          Decoder state allocated using xz_dec_init()
+ * @b:          Input and output buffers
+ * @finish:     This is an int instead of bool to avoid requiring stdbool.h.
+ *              As long as more input might be coming, finish must be false.
+ *              When the caller knows that it has provided all the input to
+ *              the decoder (some possibly still in b->in), it must set finish
+ *              to true. Only when finish is true can this function return
+ *              XZ_STREAM_END to indicate successful decompression of the
+ *              file. In single-call mode (XZ_SINGLE) finish is assumed to
+ *              always be true; the caller-provided value is ignored.
+ *
+ * This is like xz_dec_run() except that this makes it easy to decode .xz
+ * files with multiple streams (multiple .xz files concatenated as is).
+ * The rarely-used Stream Padding feature is supported too, that is, there
+ * can be null bytes after or between the streams. The number of null bytes
+ * must be a multiple of four.
+ *
+ * When finish is false and b->in_pos == b->in_size, it is possible that
+ * XZ_BUF_ERROR isn't returned even when no progress is possible (XZ_OK is
+ * returned instead). This shouldn't matter because in this situation a
+ * reasonable caller will attempt to provide more input or set finish to
+ * true for the next xz_dec_catrun() call anyway.
+ *
+ * For any struct xz_dec that has been initialized for multi-call mode:
+ * Once decoding has been started with xz_dec_run() or xz_dec_catrun(),
+ * the same function must be used until xz_dec_reset() or xz_dec_end().
+ * Switching between the two decoding functions without resetting results
+ * in undefined behavior.
+ *
+ * xz_dec_catrun() is only available if XZ_DEC_CONCATENATED was defined
+ * at compile time.
+ */
+XZ_EXTERN enum xz_ret xz_dec_catrun(struct xz_dec *s, struct xz_buf *b,
+				    int finish);
+
+/**
+ * xz_dec_reset() - Reset an already allocated decoder state
+ * @s:          Decoder state allocated using xz_dec_init()
+ *
+ * This function can be used to reset the multi-call decoder state without
+ * freeing and reallocating memory with xz_dec_end() and xz_dec_init().
+ *
+ * In single-call mode, xz_dec_reset() is always called in the beginning of
+ * xz_dec_run(). Thus, explicit call to xz_dec_reset() is useful only in
+ * multi-call mode.
+ */
+XZ_EXTERN void xz_dec_reset(struct xz_dec *s);
+
+/**
+ * xz_dec_end() - Free the memory allocated for the decoder state
+ * @s:          Decoder state allocated using xz_dec_init(). If s is NULL,
+ *              this function does nothing.
+ */
+XZ_EXTERN void xz_dec_end(struct xz_dec *s);
+
+/**
+ * DOC: MicroLZMA decompressor
+ *
+ * This MicroLZMA header format was created for use in EROFS but may be used
+ * by others too. **In most cases one needs the XZ APIs above instead.**
+ *
+ * The compressed format supported by this decoder is a raw LZMA stream
+ * whose first byte (always 0x00) has been replaced with bitwise-negation
+ * of the LZMA properties (lc/lp/pb) byte. For example, if lc/lp/pb is
+ * 3/0/2, the first byte is 0xA2. This way the first byte can never be 0x00.
+ * Just like with LZMA2, lc + lp <= 4 must be true. The LZMA end-of-stream
+ * marker must not be used. The unused values are reserved for future use.
+ */
+
+/*
+ * struct xz_dec_microlzma - Opaque type to hold the MicroLZMA decoder state
+ */
+struct xz_dec_microlzma;
+
+/**
+ * xz_dec_microlzma_alloc() - Allocate memory for the MicroLZMA decoder
+ * @mode:       XZ_SINGLE or XZ_PREALLOC
+ * @dict_size:  LZMA dictionary size. This must be at least 4 KiB and
+ *              at most 3 GiB.
+ *
+ * In contrast to xz_dec_init(), this function only allocates the memory
+ * and remembers the dictionary size. xz_dec_microlzma_reset() must be used
+ * before calling xz_dec_microlzma_run().
+ *
+ * The amount of allocated memory is a little less than 30 KiB with XZ_SINGLE.
+ * With XZ_PREALLOC also a dictionary buffer of dict_size bytes is allocated.
+ *
+ * On success, xz_dec_microlzma_alloc() returns a pointer to
+ * struct xz_dec_microlzma. If memory allocation fails or
+ * dict_size is invalid, NULL is returned.
+ */
+XZ_EXTERN struct xz_dec_microlzma *xz_dec_microlzma_alloc(enum xz_mode mode,
+							  uint32_t dict_size);
+
+/**
+ * xz_dec_microlzma_reset() - Reset the MicroLZMA decoder state
+ * @s:          Decoder state allocated using xz_dec_microlzma_alloc()
+ * @comp_size:  Compressed size of the input stream
+ * @uncomp_size:  Uncompressed size of the input stream. A value smaller
+ *              than the real uncompressed size of the input stream can
+ *              be specified if uncomp_size_is_exact is set to false.
+ *              uncomp_size can never be set to a value larger than the
+ *              expected real uncompressed size because it would eventually
+ *              result in XZ_DATA_ERROR.
+ * @uncomp_size_is_exact:  This is an int instead of bool to avoid
+ *              requiring stdbool.h. This should normally be set to true.
+ *              When this is set to false, error detection is weaker.
+ */
+XZ_EXTERN void xz_dec_microlzma_reset(struct xz_dec_microlzma *s,
+				      uint32_t comp_size, uint32_t uncomp_size,
+				      int uncomp_size_is_exact);
+
+/**
+ * xz_dec_microlzma_run() - Run the MicroLZMA decoder
+ * @s:          Decoder state initialized using xz_dec_microlzma_reset()
+ * @b:          Input and output buffers
+ *
+ * This works similarly to xz_dec_run() with a few important differences.
+ * Only the differences are documented here.
+ *
+ * The only possible return values are XZ_OK, XZ_STREAM_END, and
+ * XZ_DATA_ERROR. This function cannot return XZ_BUF_ERROR: if no progress
+ * is possible due to lack of input data or output space, this function will
+ * keep returning XZ_OK. Thus, the calling code must be written so that it
+ * will eventually provide input and output space matching (or exceeding)
+ * comp_size and uncomp_size arguments given to xz_dec_microlzma_reset().
+ * If the caller cannot do this (for example, if the input file is truncated
+ * or otherwise corrupt), the caller must detect this error by itself to
+ * avoid an infinite loop.
+ *
+ * If the compressed data seems to be corrupt, XZ_DATA_ERROR is returned.
+ * This can happen also when incorrect dictionary, uncompressed, or
+ * compressed sizes have been specified.
+ *
+ * With XZ_PREALLOC only: As an extra feature, b->out may be NULL to skip over
+ * uncompressed data. This way the caller doesn't need to provide a temporary
+ * output buffer for the bytes that will be ignored.
+ *
+ * With XZ_SINGLE only: In contrast to xz_dec_run(), the return value XZ_OK
+ * is also possible and thus XZ_SINGLE is actually a limited multi-call mode.
+ * After XZ_OK the bytes decoded so far may be read from the output buffer.
+ * It is possible to continue decoding but the variables b->out and b->out_pos
+ * MUST NOT be changed by the caller. Increasing the value of b->out_size is
+ * allowed to make more output space available; one doesn't need to provide
+ * space for the whole uncompressed data on the first call. The input buffer
+ * may be changed normally like with XZ_PREALLOC. This way input data can be
+ * provided from non-contiguous memory.
+ */
+XZ_EXTERN enum xz_ret xz_dec_microlzma_run(struct xz_dec_microlzma *s,
+					   struct xz_buf *b);
+
+/**
+ * xz_dec_microlzma_end() - Free the memory allocated for the decoder state
+ * @s:          Decoder state allocated using xz_dec_microlzma_alloc().
+ *              If s is NULL, this function does nothing.
+ */
+XZ_EXTERN void xz_dec_microlzma_end(struct xz_dec_microlzma *s);
+
+/*
+ * Standalone build (userspace build or in-kernel build for boot time use)
+ * needs a CRC32 implementation. For normal in-kernel use, kernel's own
+ * CRC32 module is used instead, and users of this module don't need to
+ * care about the functions below.
+ */
+#ifndef XZ_INTERNAL_CRC32
+#	ifdef __KERNEL__
+#		define XZ_INTERNAL_CRC32 0
+#	else
+#		define XZ_INTERNAL_CRC32 1
+#	endif
+#endif
+
+/*
+ * If CRC64 support has been enabled with XZ_USE_CRC64, a CRC64
+ * implementation is needed too.
+ */
+#ifndef XZ_USE_CRC64
+#	undef XZ_INTERNAL_CRC64
+#	define XZ_INTERNAL_CRC64 0
+#endif
+#ifndef XZ_INTERNAL_CRC64
+#	ifdef __KERNEL__
+#		error Using CRC64 in the kernel has not been implemented.
+#	else
+#		define XZ_INTERNAL_CRC64 1
+#	endif
+#endif
+
+#if XZ_INTERNAL_CRC32
+/*
+ * This must be called before any other xz_* function to initialize
+ * the CRC32 lookup table.
+ */
+XZ_EXTERN void xz_crc32_init(void);
+
+/*
+ * Update CRC32 value using the polynomial from IEEE-802.3. To start a new
+ * calculation, the third argument must be zero. To continue the calculation,
+ * the previously returned value is passed as the third argument.
+ */
+XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc);
+#endif
+
+#if XZ_INTERNAL_CRC64
+/*
+ * This must be called before any other xz_* function (except xz_crc32_init())
+ * to initialize the CRC64 lookup table.
+ */
+XZ_EXTERN void xz_crc64_init(void);
+
+/*
+ * Update CRC64 value using the polynomial from ECMA-182. To start a new
+ * calculation, the third argument must be zero. To continue the calculation,
+ * the previously returned value is passed as the third argument.
+ */
+XZ_EXTERN uint64_t xz_crc64(const uint8_t *buf, size_t size, uint64_t crc);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

android/app/src/main/cpp/xz/xz_config.h

@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/*
+ * Private includes and definitions for userspace use of XZ Embedded
+ *
+ * Author: Lasse Collin <lasse.collin@tukaani.org>
+ */
+
+#ifndef XZ_CONFIG_H
+#define XZ_CONFIG_H
+
+/* Uncomment to enable building of xz_dec_catrun(). */
+/* #define XZ_DEC_CONCATENATED */
+
+/* Uncomment to enable CRC64 support. */
+/* #define XZ_USE_CRC64 */
+
+/* Uncomment as needed to enable BCJ filter decoders. */
+/* #define XZ_DEC_X86 */
+/* #define XZ_DEC_ARM */
+/* #define XZ_DEC_ARMTHUMB */
+/* #define XZ_DEC_ARM64 */
+/* #define XZ_DEC_RISCV */
+/* #define XZ_DEC_POWERPC */
+/* #define XZ_DEC_IA64 */
+/* #define XZ_DEC_SPARC */
+
+/*
+ * Visual Studio 2013 update 2 supports only __inline, not inline.
+ * MSVC v19.0 / VS 2015 and newer support both.
+ */
+#if defined(_MSC_VER) && _MSC_VER < 1900 && !defined(inline)
+#	define inline __inline
+#endif
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "xz.h"
+
+#define kmalloc(size, flags) malloc(size)
+#define kfree(ptr) free(ptr)
+#define vmalloc(size) malloc(size)
+#define vfree(ptr) free(ptr)
+
+#define memeq(a, b, size) (memcmp(a, b, size) == 0)
+#define memzero(buf, size) memset(buf, 0, size)
+
+#ifndef min
+#	define min(x, y) ((x) < (y) ? (x) : (y))
+#endif
+#define min_t(type, x, y) min(x, y)
+
+#ifndef fallthrough
+#	if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311
+#		define fallthrough [[fallthrough]]
+#	elif (defined(__GNUC__) && __GNUC__ >= 7) \
+			|| (defined(__clang_major__) && __clang_major__ >= 10)
+#		define fallthrough __attribute__((__fallthrough__))
+#	else
+#		define fallthrough do {} while (0)
+#	endif
+#endif
+
+/*
+ * Some functions have been marked with __always_inline to keep the
+ * performance reasonable even when the compiler is optimizing for
+ * small code size. You may be able to save a few bytes by #defining
+ * __always_inline to plain inline, but don't complain if the code
+ * becomes slow.
+ *
+ * NOTE: System headers on GNU/Linux may #define this macro already,
+ * so if you want to change it, you need to #undef it first.
+ */
+#ifndef __always_inline
+#	ifdef __GNUC__
+#		define __always_inline \
+			inline __attribute__((__always_inline__))
+#	else
+#		define __always_inline inline
+#	endif
+#endif
+
+/* Inline functions to access unaligned unsigned 32-bit integers */
+#ifndef get_unaligned_le32
+static inline uint32_t get_unaligned_le32(const uint8_t *buf)
+{
+	return (uint32_t)buf[0]
+			| ((uint32_t)buf[1] << 8)
+			| ((uint32_t)buf[2] << 16)
+			| ((uint32_t)buf[3] << 24);
+}
+#endif
+
+#ifndef get_unaligned_be32
+static inline uint32_t get_unaligned_be32(const uint8_t *buf)
+{
+	return (uint32_t)((uint32_t)buf[0] << 24)
+			| ((uint32_t)buf[1] << 16)
+			| ((uint32_t)buf[2] << 8)
+			| (uint32_t)buf[3];
+}
+#endif
+
+#ifndef put_unaligned_le32
+static inline void put_unaligned_le32(uint32_t val, uint8_t *buf)
+{
+	buf[0] = (uint8_t)val;
+	buf[1] = (uint8_t)(val >> 8);
+	buf[2] = (uint8_t)(val >> 16);
+	buf[3] = (uint8_t)(val >> 24);
+}
+#endif
+
+#ifndef put_unaligned_be32
+static inline void put_unaligned_be32(uint32_t val, uint8_t *buf)
+{
+	buf[0] = (uint8_t)(val >> 24);
+	buf[1] = (uint8_t)(val >> 16);
+	buf[2] = (uint8_t)(val >> 8);
+	buf[3] = (uint8_t)val;
+}
+#endif
+
+/*
+ * To keep things simpler, use the generic unaligned methods also for
+ * aligned access. The only place where performance could matter is
+ * SHA-256 but files using SHA-256 aren't common.
+ */
+#ifndef get_le32
+#	define get_le32 get_unaligned_le32
+#endif
+#ifndef get_be32
+#	define get_be32 get_unaligned_be32
+#endif
+
+#endif

android/app/src/main/cpp/xz/xz_crc32.c

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: 0BSD
+
+/*
+ * CRC32 using the polynomial from IEEE-802.3
+ *
+ * Authors: Lasse Collin <lasse.collin@tukaani.org>
+ *          Igor Pavlov <https://7-zip.org/>
+ */
+
+/*
+ * This is not the fastest implementation, but it is pretty compact.
+ * The fastest versions of xz_crc32() on modern CPUs without hardware
+ * accelerated CRC instruction are 3-5 times as fast as this version,
+ * but they are bigger and use more memory for the lookup table.
+ */
+
+#include "xz_private.h"
+
+/*
+ * STATIC_RW_DATA is used in the pre-boot environment on some architectures.
+ * See <linux/decompress/mm.h> for details.
+ */
+#ifndef STATIC_RW_DATA
+#	define STATIC_RW_DATA static
+#endif
+
+STATIC_RW_DATA uint32_t xz_crc32_table[256];
+
+XZ_EXTERN void xz_crc32_init(void)
+{
+	const uint32_t poly = 0xEDB88320;
+
+	uint32_t i;
+	uint32_t j;
+	uint32_t r;
+
+	for (i = 0; i < 256; ++i) {
+		r = i;
+		for (j = 0; j < 8; ++j)
+			r = (r >> 1) ^ (poly & ~((r & 1) - 1));
+
+		xz_crc32_table[i] = r;
+	}
+
+	return;
+}
+
+XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc)
+{
+	crc = ~crc;
+
+	while (size != 0) {
+		crc = xz_crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8);
+		--size;
+	}
+
+	return ~crc;
+}

android/app/src/main/cpp/xz/xz_crc64.c

@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: 0BSD
+
+/*
+ * CRC64 using the polynomial from ECMA-182
+ *
+ * This file is similar to xz_crc32.c. See the comments there.
+ *
+ * Authors: Lasse Collin <lasse.collin@tukaani.org>
+ *          Igor Pavlov <https://7-zip.org/>
+ */
+
+#include "xz_private.h"
+
+#ifndef STATIC_RW_DATA
+#	define STATIC_RW_DATA static
+#endif
+
+STATIC_RW_DATA uint64_t xz_crc64_table[256];
+
+XZ_EXTERN void xz_crc64_init(void)
+{
+	/*
+	 * The ULL suffix is needed for -std=gnu89 compatibility
+	 * on 32-bit platforms.
+	 */
+	const uint64_t poly = 0xC96C5795D7870F42ULL;
+
+	uint32_t i;
+	uint32_t j;
+	uint64_t r;
+
+	for (i = 0; i < 256; ++i) {
+		r = i;
+		for (j = 0; j < 8; ++j)
+			r = (r >> 1) ^ (poly & ~((r & 1) - 1));
+
+		xz_crc64_table[i] = r;
+	}
+
+	return;
+}
+
+XZ_EXTERN uint64_t xz_crc64(const uint8_t *buf, size_t size, uint64_t crc)
+{
+	crc = ~crc;
+
+	while (size != 0) {
+		crc = xz_crc64_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8);
+		--size;
+	}
+
+	return ~crc;
+}

android/app/src/main/cpp/xz/xz_dec_bcj.c

@@ -0,0 +1,738 @@
+// SPDX-License-Identifier: 0BSD
+
+/*
+ * Branch/Call/Jump (BCJ) filter decoders
+ *
+ * Authors: Lasse Collin <lasse.collin@tukaani.org>
+ *          Igor Pavlov <https://7-zip.org/>
+ */
+
+#include "xz_private.h"
+
+/*
+ * The rest of the file is inside this ifdef. It makes things a little more
+ * convenient when building without support for any BCJ filters.
+ */
+#ifdef XZ_DEC_BCJ
+
+struct xz_dec_bcj {
+	/* Type of the BCJ filter being used */
+	enum {
+		BCJ_X86 = 4,        /* x86 or x86-64 */
+		BCJ_POWERPC = 5,    /* Big endian only */
+		BCJ_IA64 = 6,       /* Big or little endian */
+		BCJ_ARM = 7,        /* Little endian only */
+		BCJ_ARMTHUMB = 8,   /* Little endian only */
+		BCJ_SPARC = 9,      /* Big or little endian */
+		BCJ_ARM64 = 10,     /* AArch64 */
+		BCJ_RISCV = 11      /* RV32GQC_Zfh, RV64GQC_Zfh */
+	} type;
+
+	/*
+	 * Return value of the next filter in the chain. We need to preserve
+	 * this information across calls, because we must not call the next
+	 * filter anymore once it has returned XZ_STREAM_END.
+	 */
+	enum xz_ret ret;
+
+	/* True if we are operating in single-call mode. */
+	bool single_call;
+
+	/*
+	 * Absolute position relative to the beginning of the uncompressed
+	 * data (in a single .xz Block). We care only about the lowest 32
+	 * bits so this doesn't need to be uint64_t even with big files.
+	 */
+	uint32_t pos;
+
+	/* x86 filter state */
+	uint32_t x86_prev_mask;
+
+	/* Temporary space to hold the variables from struct xz_buf */
+	uint8_t *out;
+	size_t out_pos;
+	size_t out_size;
+
+	struct {
+		/* Amount of already filtered data in the beginning of buf */
+		size_t filtered;
+
+		/* Total amount of data currently stored in buf  */
+		size_t size;
+
+		/*
+		 * Buffer to hold a mix of filtered and unfiltered data. This
+		 * needs to be big enough to hold Alignment + 2 * Look-ahead:
+		 *
+		 * Type         Alignment   Look-ahead
+		 * x86              1           4
+		 * PowerPC          4           0
+		 * IA-64           16           0
+		 * ARM              4           0
+		 * ARM-Thumb        2           2
+		 * SPARC            4           0
+		 */
+		uint8_t buf[16];
+	} temp;
+};
+
+#ifdef XZ_DEC_X86
+/*
+ * This is used to test the most significant byte of a memory address
+ * in an x86 instruction.
+ */
+static inline int bcj_x86_test_msbyte(uint8_t b)
+{
+	return b == 0x00 || b == 0xFF;
+}
+
+static size_t bcj_x86(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	static const bool mask_to_allowed_status[8]
+		= { true, true, true, false, true, false, false, false };
+
+	static const uint8_t mask_to_bit_num[8] = { 0, 1, 2, 2, 3, 3, 3, 3 };
+
+	size_t i;
+	size_t prev_pos = (size_t)-1;
+	uint32_t prev_mask = s->x86_prev_mask;
+	uint32_t src;
+	uint32_t dest;
+	uint32_t j;
+	uint8_t b;
+
+	if (size <= 4)
+		return 0;
+
+	size -= 4;
+	for (i = 0; i < size; ++i) {
+		if ((buf[i] & 0xFE) != 0xE8)
+			continue;
+
+		prev_pos = i - prev_pos;
+		if (prev_pos > 3) {
+			prev_mask = 0;
+		} else {
+			prev_mask = (prev_mask << (prev_pos - 1)) & 7;
+			if (prev_mask != 0) {
+				b = buf[i + 4 - mask_to_bit_num[prev_mask]];
+				if (!mask_to_allowed_status[prev_mask]
+						|| bcj_x86_test_msbyte(b)) {
+					prev_pos = i;
+					prev_mask = (prev_mask << 1) | 1;
+					continue;
+				}
+			}
+		}
+
+		prev_pos = i;
+
+		if (bcj_x86_test_msbyte(buf[i + 4])) {
+			src = get_unaligned_le32(buf + i + 1);
+			while (true) {
+				dest = src - (s->pos + (uint32_t)i + 5);
+				if (prev_mask == 0)
+					break;
+
+				j = mask_to_bit_num[prev_mask] * 8;
+				b = (uint8_t)(dest >> (24 - j));
+				if (!bcj_x86_test_msbyte(b))
+					break;
+
+				src = dest ^ (((uint32_t)1 << (32 - j)) - 1);
+			}
+
+			dest &= 0x01FFFFFF;
+			dest |= (uint32_t)0 - (dest & 0x01000000);
+			put_unaligned_le32(dest, buf + i + 1);
+			i += 4;
+		} else {
+			prev_mask = (prev_mask << 1) | 1;
+		}
+	}
+
+	prev_pos = i - prev_pos;
+	s->x86_prev_mask = prev_pos > 3 ? 0 : prev_mask << (prev_pos - 1);
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_POWERPC
+static size_t bcj_powerpc(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t instr;
+
+	size &= ~(size_t)3;
+
+	for (i = 0; i < size; i += 4) {
+		instr = get_unaligned_be32(buf + i);
+		if ((instr & 0xFC000003) == 0x48000001) {
+			instr &= 0x03FFFFFC;
+			instr -= s->pos + (uint32_t)i;
+			instr &= 0x03FFFFFC;
+			instr |= 0x48000001;
+			put_unaligned_be32(instr, buf + i);
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_IA64
+static size_t bcj_ia64(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	static const uint8_t branch_table[32] = {
+		0, 0, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0,
+		4, 4, 6, 6, 0, 0, 7, 7,
+		4, 4, 0, 0, 4, 4, 0, 0
+	};
+
+	/*
+	 * The local variables take a little bit stack space, but it's less
+	 * than what LZMA2 decoder takes, so it doesn't make sense to reduce
+	 * stack usage here without doing that for the LZMA2 decoder too.
+	 */
+
+	/* Loop counters */
+	size_t i;
+	size_t j;
+
+	/* Instruction slot (0, 1, or 2) in the 128-bit instruction word */
+	uint32_t slot;
+
+	/* Bitwise offset of the instruction indicated by slot */
+	uint32_t bit_pos;
+
+	/* bit_pos split into byte and bit parts */
+	uint32_t byte_pos;
+	uint32_t bit_res;
+
+	/* Address part of an instruction */
+	uint32_t addr;
+
+	/* Mask used to detect which instructions to convert */
+	uint32_t mask;
+
+	/* 41-bit instruction stored somewhere in the lowest 48 bits */
+	uint64_t instr;
+
+	/* Instruction normalized with bit_res for easier manipulation */
+	uint64_t norm;
+
+	size &= ~(size_t)15;
+
+	for (i = 0; i < size; i += 16) {
+		mask = branch_table[buf[i] & 0x1F];
+		for (slot = 0, bit_pos = 5; slot < 3; ++slot, bit_pos += 41) {
+			if (((mask >> slot) & 1) == 0)
+				continue;
+
+			byte_pos = bit_pos >> 3;
+			bit_res = bit_pos & 7;
+			instr = 0;
+			for (j = 0; j < 6; ++j)
+				instr |= (uint64_t)(buf[i + j + byte_pos])
+						<< (8 * j);
+
+			norm = instr >> bit_res;
+
+			if (((norm >> 37) & 0x0F) == 0x05
+					&& ((norm >> 9) & 0x07) == 0) {
+				addr = (norm >> 13) & 0x0FFFFF;
+				addr |= ((uint32_t)(norm >> 36) & 1) << 20;
+				addr <<= 4;
+				addr -= s->pos + (uint32_t)i;
+				addr >>= 4;
+
+				norm &= ~((uint64_t)0x8FFFFF << 13);
+				norm |= (uint64_t)(addr & 0x0FFFFF) << 13;
+				norm |= (uint64_t)(addr & 0x100000)
+						<< (36 - 20);
+
+				instr &= (1 << bit_res) - 1;
+				instr |= norm << bit_res;
+
+				for (j = 0; j < 6; j++)
+					buf[i + j + byte_pos]
+						= (uint8_t)(instr >> (8 * j));
+			}
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_ARM
+static size_t bcj_arm(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t addr;
+
+	size &= ~(size_t)3;
+
+	for (i = 0; i < size; i += 4) {
+		if (buf[i + 3] == 0xEB) {
+			addr = (uint32_t)buf[i] | ((uint32_t)buf[i + 1] << 8)
+					| ((uint32_t)buf[i + 2] << 16);
+			addr <<= 2;
+			addr -= s->pos + (uint32_t)i + 8;
+			addr >>= 2;
+			buf[i] = (uint8_t)addr;
+			buf[i + 1] = (uint8_t)(addr >> 8);
+			buf[i + 2] = (uint8_t)(addr >> 16);
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_ARMTHUMB
+static size_t bcj_armthumb(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t addr;
+
+	if (size < 4)
+		return 0;
+
+	size -= 4;
+
+	for (i = 0; i <= size; i += 2) {
+		if ((buf[i + 1] & 0xF8) == 0xF0
+				&& (buf[i + 3] & 0xF8) == 0xF8) {
+			addr = (((uint32_t)buf[i + 1] & 0x07) << 19)
+					| ((uint32_t)buf[i] << 11)
+					| (((uint32_t)buf[i + 3] & 0x07) << 8)
+					| (uint32_t)buf[i + 2];
+			addr <<= 1;
+			addr -= s->pos + (uint32_t)i + 4;
+			addr >>= 1;
+			buf[i + 1] = (uint8_t)(0xF0 | ((addr >> 19) & 0x07));
+			buf[i] = (uint8_t)(addr >> 11);
+			buf[i + 3] = (uint8_t)(0xF8 | ((addr >> 8) & 0x07));
+			buf[i + 2] = (uint8_t)addr;
+			i += 2;
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_SPARC
+static size_t bcj_sparc(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t instr;
+
+	size &= ~(size_t)3;
+
+	for (i = 0; i < size; i += 4) {
+		instr = get_unaligned_be32(buf + i);
+		if ((instr >> 22) == 0x100 || (instr >> 22) == 0x1FF) {
+			instr <<= 2;
+			instr -= s->pos + (uint32_t)i;
+			instr >>= 2;
+			instr = ((uint32_t)0x40000000 - (instr & 0x400000))
+					| 0x40000000 | (instr & 0x3FFFFF);
+			put_unaligned_be32(instr, buf + i);
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_ARM64
+static size_t bcj_arm64(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t instr;
+	uint32_t addr;
+
+	size &= ~(size_t)3;
+
+	for (i = 0; i < size; i += 4) {
+		instr = get_unaligned_le32(buf + i);
+
+		if ((instr >> 26) == 0x25) {
+			/* BL instruction */
+			addr = instr - ((s->pos + (uint32_t)i) >> 2);
+			instr = 0x94000000 | (addr & 0x03FFFFFF);
+			put_unaligned_le32(instr, buf + i);
+
+		} else if ((instr & 0x9F000000) == 0x90000000) {
+			/* ADRP instruction */
+			addr = ((instr >> 29) & 3) | ((instr >> 3) & 0x1FFFFC);
+
+			/* Only convert values in the range +/-512 MiB. */
+			if ((addr + 0x020000) & 0x1C0000)
+				continue;
+
+			addr -= (s->pos + (uint32_t)i) >> 12;
+
+			instr &= 0x9000001F;
+			instr |= (addr & 3) << 29;
+			instr |= (addr & 0x03FFFC) << 3;
+			instr |= (0U - (addr & 0x020000)) & 0xE00000;
+
+			put_unaligned_le32(instr, buf + i);
+		}
+	}
+
+	return i;
+}
+#endif
+
+#ifdef XZ_DEC_RISCV
+static size_t bcj_riscv(struct xz_dec_bcj *s, uint8_t *buf, size_t size)
+{
+	size_t i;
+	uint32_t b1;
+	uint32_t b2;
+	uint32_t b3;
+	uint32_t instr;
+	uint32_t instr2;
+	uint32_t instr2_rs1;
+	uint32_t addr;
+
+	if (size < 8)
+		return 0;
+
+	size -= 8;
+
+	for (i = 0; i <= size; i += 2) {
+		instr = buf[i];
+
+		if (instr == 0xEF) {
+			/* JAL */
+			b1 = buf[i + 1];
+			if ((b1 & 0x0D) != 0)
+				continue;
+
+			b2 = buf[i + 2];
+			b3 = buf[i + 3];
+
+			addr = ((b1 & 0xF0) << 13) | (b2 << 9) | (b3 << 1);
+			addr -= s->pos + (uint32_t)i;
+
+			buf[i + 1] = (uint8_t)((b1 & 0x0F)
+					| ((addr >> 8) & 0xF0));
+
+			buf[i + 2] = (uint8_t)(((addr >> 16) & 0x0F)
+					| ((addr >> 7) & 0x10)
+					| ((addr << 4) & 0xE0));
+
+			buf[i + 3] = (uint8_t)(((addr >> 4) & 0x7F)
+					| ((addr >> 13) & 0x80));
+
+			i += 4 - 2;
+
+		} else if ((instr & 0x7F) == 0x17) {
+			/* AUIPC */
+			instr |= (uint32_t)buf[i + 1] << 8;
+			instr |= (uint32_t)buf[i + 2] << 16;
+			instr |= (uint32_t)buf[i + 3] << 24;
+
+			if (instr & 0xE80) {
+				/* AUIPC's rd doesn't equal x0 or x2. */
+				instr2 = get_unaligned_le32(buf + i + 4);
+
+				if (((instr << 8) ^ (instr2 - 3)) & 0xF8003) {
+					i += 6 - 2;
+					continue;
+				}
+
+				addr = (instr & 0xFFFFF000) + (instr2 >> 20);
+
+				instr = 0x17 | (2 << 7) | (instr2 << 12);
+				instr2 = addr;
+			} else {
+				/* AUIPC's rd equals x0 or x2. */
+				instr2_rs1 = instr >> 27;
+
+				if ((uint32_t)((instr - 0x3117) << 18)
+						>= (instr2_rs1 & 0x1D)) {
+					i += 4 - 2;
+					continue;
+				}
+
+				addr = get_unaligned_be32(buf + i + 4);
+				addr -= s->pos + (uint32_t)i;
+
+				instr2 = (instr >> 12) | (addr << 20);
+
+				instr = 0x17 | (instr2_rs1 << 7)
+					| ((addr + 0x800) & 0xFFFFF000);
+			}
+
+			put_unaligned_le32(instr, buf + i);
+			put_unaligned_le32(instr2, buf + i + 4);
+
+			i += 8 - 2;
+		}
+	}
+
+	return i;
+}
+#endif
+
+/*
+ * Apply the selected BCJ filter. Update *pos and s->pos to match the amount
+ * of data that got filtered.
+ *
+ * NOTE: This is implemented as a switch statement to avoid using function
+ * pointers, which could be problematic in the kernel boot code, which must
+ * avoid pointers to static data (at least on x86).
+ */
+static void bcj_apply(struct xz_dec_bcj *s,
+		      uint8_t *buf, size_t *pos, size_t size)
+{
+	size_t filtered;
+
+	buf += *pos;
+	size -= *pos;
+
+	switch (s->type) {
+#ifdef XZ_DEC_X86
+	case BCJ_X86:
+		filtered = bcj_x86(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_POWERPC
+	case BCJ_POWERPC:
+		filtered = bcj_powerpc(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_IA64
+	case BCJ_IA64:
+		filtered = bcj_ia64(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_ARM
+	case BCJ_ARM:
+		filtered = bcj_arm(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_ARMTHUMB
+	case BCJ_ARMTHUMB:
+		filtered = bcj_armthumb(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_SPARC
+	case BCJ_SPARC:
+		filtered = bcj_sparc(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_ARM64
+	case BCJ_ARM64:
+		filtered = bcj_arm64(s, buf, size);
+		break;
+#endif
+#ifdef XZ_DEC_RISCV
+	case BCJ_RISCV:
+		filtered = bcj_riscv(s, buf, size);
+		break;
+#endif
+	default:
+		/* Never reached but silence compiler warnings. */
+		filtered = 0;
+		break;
+	}
+
+	*pos += filtered;
+	s->pos += filtered;
+}
+
+/*
+ * Flush pending filtered data from temp to the output buffer.
+ * Move the remaining mixture of possibly filtered and unfiltered
+ * data to the beginning of temp.
+ */
+static void bcj_flush(struct xz_dec_bcj *s, struct xz_buf *b)
+{
+	size_t copy_size;
+
+	copy_size = min_t(size_t, s->temp.filtered, b->out_size - b->out_pos);
+	memcpy(b->out + b->out_pos, s->temp.buf, copy_size);
+	b->out_pos += copy_size;
+
+	s->temp.filtered -= copy_size;
+	s->temp.size -= copy_size;
+	memmove(s->temp.buf, s->temp.buf + copy_size, s->temp.size);
+}
+
+/*
+ * The BCJ filter functions are primitive in sense that they process the
+ * data in chunks of 1-16 bytes. To hide this issue, this function does
+ * some buffering.
+ */
+XZ_EXTERN enum xz_ret xz_dec_bcj_run(struct xz_dec_bcj *s,
+				     struct xz_dec_lzma2 *lzma2,
+				     struct xz_buf *b)
+{
+	size_t out_start;
+
+	/*
+	 * Flush pending already filtered data to the output buffer. Return
+	 * immediately if we couldn't flush everything, or if the next
+	 * filter in the chain had already returned XZ_STREAM_END.
+	 */
+	if (s->temp.filtered > 0) {
+		bcj_flush(s, b);
+		if (s->temp.filtered > 0)
+			return XZ_OK;
+
+		if (s->ret == XZ_STREAM_END)
+			return XZ_STREAM_END;
+	}
+
+	/*
+	 * If we have more output space than what is currently pending in
+	 * temp, copy the unfiltered data from temp to the output buffer
+	 * and try to fill the output buffer by decoding more data from the
+	 * next filter in the chain. Apply the BCJ filter on the new data
+	 * in the output buffer. If everything cannot be filtered, copy it
+	 * to temp and rewind the output buffer position accordingly.
+	 *
+	 * This needs to be always run when temp.size == 0 to handle a special
+	 * case where the output buffer is full and the next filter has no
+	 * more output coming but hasn't returned XZ_STREAM_END yet.
+	 */
+	if (s->temp.size < b->out_size - b->out_pos || s->temp.size == 0) {
+		out_start = b->out_pos;
+		memcpy(b->out + b->out_pos, s->temp.buf, s->temp.size);
+		b->out_pos += s->temp.size;
+
+		s->ret = xz_dec_lzma2_run(lzma2, b);
+		if (s->ret != XZ_STREAM_END
+				&& (s->ret != XZ_OK || s->single_call))
+			return s->ret;
+
+		bcj_apply(s, b->out, &out_start, b->out_pos);
+
+		/*
+		 * As an exception, if the next filter returned XZ_STREAM_END,
+		 * we can do that too, since the last few bytes that remain
+		 * unfiltered are meant to remain unfiltered.
+		 */
+		if (s->ret == XZ_STREAM_END)
+			return XZ_STREAM_END;
+
+		s->temp.size = b->out_pos - out_start;
+		b->out_pos -= s->temp.size;
+		memcpy(s->temp.buf, b->out + b->out_pos, s->temp.size);
+
+		/*
+		 * If there wasn't enough input to the next filter to fill
+		 * the output buffer with unfiltered data, there's no point
+		 * to try decoding more data to temp.
+		 */
+		if (b->out_pos + s->temp.size < b->out_size)
+			return XZ_OK;
+	}
+
+	/*
+	 * We have unfiltered data in temp. If the output buffer isn't full
+	 * yet, try to fill the temp buffer by decoding more data from the
+	 * next filter. Apply the BCJ filter on temp. Then we hopefully can
+	 * fill the actual output buffer by copying filtered data from temp.
+	 * A mix of filtered and unfiltered data may be left in temp; it will
+	 * be taken care on the next call to this function.
+	 */
+	if (b->out_pos < b->out_size) {
+		/* Make b->out{,_pos,_size} temporarily point to s->temp. */
+		s->out = b->out;
+		s->out_pos = b->out_pos;
+		s->out_size = b->out_size;
+		b->out = s->temp.buf;
+		b->out_pos = s->temp.size;
+		b->out_size = sizeof(s->temp.buf);
+
+		s->ret = xz_dec_lzma2_run(lzma2, b);
+
+		s->temp.size = b->out_pos;
+		b->out = s->out;
+		b->out_pos = s->out_pos;
+		b->out_size = s->out_size;
+
+		if (s->ret != XZ_OK && s->ret != XZ_STREAM_END)
+			return s->ret;
+
+		bcj_apply(s, s->temp.buf, &s->temp.filtered, s->temp.size);
+
+		/*
+		 * If the next filter returned XZ_STREAM_END, we mark that
+		 * everything is filtered, since the last unfiltered bytes
+		 * of the stream are meant to be left as is.
+		 */
+		if (s->ret == XZ_STREAM_END)
+			s->temp.filtered = s->temp.size;
+
+		bcj_flush(s, b);
+		if (s->temp.filtered > 0)
+			return XZ_OK;
+	}
+
+	return s->ret;
+}
+
+XZ_EXTERN struct xz_dec_bcj *xz_dec_bcj_create(bool single_call)
+{
+	struct xz_dec_bcj *s = kmalloc(sizeof(*s), GFP_KERNEL);
+	if (s != NULL)
+		s->single_call = single_call;
+
+	return s;
+}
+
+XZ_EXTERN enum xz_ret xz_dec_bcj_reset(struct xz_dec_bcj *s, uint8_t id)
+{
+	switch (id) {
+#ifdef XZ_DEC_X86
+	case BCJ_X86:
+#endif
+#ifdef XZ_DEC_POWERPC
+	case BCJ_POWERPC:
+#endif
+#ifdef XZ_DEC_IA64
+	case BCJ_IA64:
+#endif
+#ifdef XZ_DEC_ARM
+	case BCJ_ARM:
+#endif
+#ifdef XZ_DEC_ARMTHUMB
+	case BCJ_ARMTHUMB:
+#endif
+#ifdef XZ_DEC_SPARC
+	case BCJ_SPARC:
+#endif
+#ifdef XZ_DEC_ARM64
+	case BCJ_ARM64:
+#endif
+#ifdef XZ_DEC_RISCV
+	case BCJ_RISCV:
+#endif
+		break;
+
+	default:
+		/* Unsupported Filter ID */
+		return XZ_OPTIONS_ERROR;
+	}
+
+	s->type = id;
+	s->ret = XZ_OK;
+	s->pos = 0;
+	s->x86_prev_mask = 0;
+	s->temp.filtered = 0;
+	s->temp.size = 0;
+
+	return XZ_OK;
+}
+
+#endif

android/app/src/main/cpp/xz/xz_dec_stream.c

@@ -0,0 +1,984 @@
+// SPDX-License-Identifier: 0BSD
+
+/*
+ * .xz Stream decoder
+ *
+ * Author: Lasse Collin <lasse.collin@tukaani.org>
+ */
+
+#include "xz_private.h"
+#include "xz_stream.h"
+
+#ifdef XZ_USE_CRC64
+#	define IS_CRC64(check_type) ((check_type) == XZ_CHECK_CRC64)
+#else
+#	define IS_CRC64(check_type) false
+#endif
+
+#ifdef XZ_USE_SHA256
+#	define IS_SHA256(check_type) ((check_type) == XZ_CHECK_SHA256)
+#else
+#	define IS_SHA256(check_type) false
+#endif
+
+/* Hash used to validate the Index field */
+struct xz_dec_hash {
+	vli_type unpadded;
+	vli_type uncompressed;
+	uint32_t crc32;
+};
+
+struct xz_dec {
+	/* Position in dec_main() */
+	enum {
+		SEQ_STREAM_HEADER,
+		SEQ_BLOCK_START,
+		SEQ_BLOCK_HEADER,
+		SEQ_BLOCK_UNCOMPRESS,
+		SEQ_BLOCK_PADDING,
+		SEQ_BLOCK_CHECK,
+		SEQ_INDEX,
+		SEQ_INDEX_PADDING,
+		SEQ_INDEX_CRC32,
+		SEQ_STREAM_FOOTER,
+		SEQ_STREAM_PADDING
+	} sequence;
+
+	/* Position in variable-length integers and Check fields */
+	uint32_t pos;
+
+	/* Variable-length integer decoded by dec_vli() */
+	vli_type vli;
+
+	/* Saved in_pos and out_pos */
+	size_t in_start;
+	size_t out_start;
+
+#ifdef XZ_USE_CRC64
+	/* CRC32 or CRC64 value in Block or CRC32 value in Index */
+	uint64_t crc;
+#else
+	/* CRC32 value in Block or Index */
+	uint32_t crc;
+#endif
+
+	/* Type of the integrity check calculated from uncompressed data */
+	enum xz_check check_type;
+
+	/* Operation mode */
+	enum xz_mode mode;
+
+	/*
+	 * True if the next call to xz_dec_run() is allowed to return
+	 * XZ_BUF_ERROR.
+	 */
+	bool allow_buf_error;
+
+	/* Information stored in Block Header */
+	struct {
+		/*
+		 * Value stored in the Compressed Size field, or
+		 * VLI_UNKNOWN if Compressed Size is not present.
+		 */
+		vli_type compressed;
+
+		/*
+		 * Value stored in the Uncompressed Size field, or
+		 * VLI_UNKNOWN if Uncompressed Size is not present.
+		 */
+		vli_type uncompressed;
+
+		/* Size of the Block Header field */
+		uint32_t size;
+	} block_header;
+
+	/* Information collected when decoding Blocks */
+	struct {
+		/* Observed compressed size of the current Block */
+		vli_type compressed;
+
+		/* Observed uncompressed size of the current Block */
+		vli_type uncompressed;
+
+		/* Number of Blocks decoded so far */
+		vli_type count;
+
+		/*
+		 * Hash calculated from the Block sizes. This is used to
+		 * validate the Index field.
+		 */
+		struct xz_dec_hash hash;
+	} block;
+
+	/* Variables needed when verifying the Index field */
+	struct {
+		/* Position in dec_index() */
+		enum {
+			SEQ_INDEX_COUNT,
+			SEQ_INDEX_UNPADDED,
+			SEQ_INDEX_UNCOMPRESSED
+		} sequence;
+
+		/* Size of the Index in bytes */
+		vli_type size;
+
+		/* Number of Records (matches block.count in valid files) */
+		vli_type count;
+
+		/*
+		 * Hash calculated from the Records (matches block.hash in
+		 * valid files).
+		 */
+		struct xz_dec_hash hash;
+	} index;
+
+	/*
+	 * Temporary buffer needed to hold Stream Header, Block Header,
+	 * and Stream Footer. The Block Header is the biggest (1 KiB)
+	 * so we reserve space according to that. buf[] has to be aligned
+	 * to a multiple of four bytes; the size_t variables before it
+	 * should guarantee this.
+	 */
+	struct {
+		size_t pos;
+		size_t size;
+		uint8_t buf[1024];
+	} temp;
+
+	struct xz_dec_lzma2 *lzma2;
+
+#ifdef XZ_DEC_BCJ
+	struct xz_dec_bcj *bcj;
+	bool bcj_active;
+#endif
+
+#ifdef XZ_USE_SHA256
+	/*
+	 * SHA-256 value in Block
+	 *
+	 * struct xz_sha256 is over a hundred bytes and it's only accessed
+	 * from a few places. By putting the SHA-256 state near the end
+	 * of struct xz_dec (somewhere after the "index" member) reduces
+	 * code size at least on x86 and RISC-V. It's because the first bytes
+	 * of the struct can be accessed with smaller instructions; the
+	 * members that are accessed from many places should be at the top.
+	 */
+	struct xz_sha256 sha256;
+#endif
+};
+
+#if defined(XZ_DEC_ANY_CHECK) || defined(XZ_USE_SHA256)
+/* Sizes of the Check field with different Check IDs */
+static const uint8_t check_sizes[16] = {
+	0,
+	4, 4, 4,
+	8, 8, 8,
+	16, 16, 16,
+	32, 32, 32,
+	64, 64, 64
+};
+#endif
+
+/*
+ * Fill s->temp by copying data starting from b->in[b->in_pos]. Caller
+ * must have set s->temp.pos and s->temp.size to indicate how much data
+ * we are supposed to copy into s->temp.buf. Return true once s->temp.pos
+ * has reached s->temp.size.
+ */
+static bool fill_temp(struct xz_dec *s, struct xz_buf *b)
+{
+	size_t copy_size = min_t(size_t,
+			b->in_size - b->in_pos, s->temp.size - s->temp.pos);
+
+	memcpy(s->temp.buf + s->temp.pos, b->in + b->in_pos, copy_size);
+	b->in_pos += copy_size;
+	s->temp.pos += copy_size;
+
+	if (s->temp.pos == s->temp.size) {
+		s->temp.pos = 0;
+		return true;
+	}
+
+	return false;
+}
+
+/* Decode a variable-length integer (little-endian base-128 encoding) */
+static enum xz_ret dec_vli(struct xz_dec *s, const uint8_t *in,
+			   size_t *in_pos, size_t in_size)
+{
+	uint8_t byte;
+
+	if (s->pos == 0)
+		s->vli = 0;
+
+	while (*in_pos < in_size) {
+		byte = in[*in_pos];
+		++*in_pos;
+
+		s->vli |= (vli_type)(byte & 0x7F) << s->pos;
+
+		if ((byte & 0x80) == 0) {
+			/* Don't allow non-minimal encodings. */
+			if (byte == 0 && s->pos != 0)
+				return XZ_DATA_ERROR;
+
+			s->pos = 0;
+			return XZ_STREAM_END;
+		}
+
+		s->pos += 7;
+		if (s->pos == 7 * VLI_BYTES_MAX)
+			return XZ_DATA_ERROR;
+	}
+
+	return XZ_OK;
+}
+
+/*
+ * Decode the Compressed Data field from a Block. Update and validate
+ * the observed compressed and uncompressed sizes of the Block so that
+ * they don't exceed the values possibly stored in the Block Header
+ * (validation assumes that no integer overflow occurs, since vli_type
+ * is normally uint64_t). Update the CRC32 or CRC64 value if presence of
+ * the CRC32 or CRC64 field was indicated in Stream Header.
+ *
+ * Once the decoding is finished, validate that the observed sizes match
+ * the sizes possibly stored in the Block Header. Update the hash and
+ * Block count, which are later used to validate the Index field.
+ */
+static enum xz_ret dec_block(struct xz_dec *s, struct xz_buf *b)
+{
+	enum xz_ret ret;
+
+	s->in_start = b->in_pos;
+	s->out_start = b->out_pos;
+
+#ifdef XZ_DEC_BCJ
+	if (s->bcj_active)
+		ret = xz_dec_bcj_run(s->bcj, s->lzma2, b);
+	else
+#endif
+		ret = xz_dec_lzma2_run(s->lzma2, b);
+
+	s->block.compressed += b->in_pos - s->in_start;
+	s->block.uncompressed += b->out_pos - s->out_start;
+
+	/*
+	 * There is no need to separately check for VLI_UNKNOWN, since
+	 * the observed sizes are always smaller than VLI_UNKNOWN.
+	 */
+	if (s->block.compressed > s->block_header.compressed
+			|| s->block.uncompressed
+				> s->block_header.uncompressed)
+		return XZ_DATA_ERROR;
+
+	if (s->check_type == XZ_CHECK_CRC32)
+		s->crc = xz_crc32(b->out + s->out_start,
+				b->out_pos - s->out_start, s->crc);
+#ifdef XZ_USE_CRC64
+	else if (s->check_type == XZ_CHECK_CRC64)
+		s->crc = xz_crc64(b->out + s->out_start,
+				b->out_pos - s->out_start, s->crc);
+#endif
+#ifdef XZ_USE_SHA256
+	else if (s->check_type == XZ_CHECK_SHA256)
+		xz_sha256_update(b->out + s->out_start,
+				b->out_pos - s->out_start, &s->sha256);
+#endif
+
+	if (ret == XZ_STREAM_END) {
+		if (s->block_header.compressed != VLI_UNKNOWN
+				&& s->block_header.compressed
+					!= s->block.compressed)
+			return XZ_DATA_ERROR;
+
+		if (s->block_header.uncompressed != VLI_UNKNOWN
+				&& s->block_header.uncompressed
+					!= s->block.uncompressed)
+			return XZ_DATA_ERROR;
+
+		s->block.hash.unpadded += s->block_header.size
+				+ s->block.compressed;
+
+#if defined(XZ_DEC_ANY_CHECK) || defined(XZ_USE_SHA256)
+		s->block.hash.unpadded += check_sizes[s->check_type];
+#else
+		if (s->check_type == XZ_CHECK_CRC32)
+			s->block.hash.unpadded += 4;
+		else if (IS_CRC64(s->check_type))
+			s->block.hash.unpadded += 8;
+#endif
+
+		s->block.hash.uncompressed += s->block.uncompressed;
+		s->block.hash.crc32 = xz_crc32(
+				(const uint8_t *)&s->block.hash,
+				sizeof(s->block.hash), s->block.hash.crc32);
+
+		++s->block.count;
+	}
+
+	return ret;
+}
+
+/* Update the Index size and the CRC32 value. */
+static void index_update(struct xz_dec *s, const struct xz_buf *b)
+{
+	size_t in_used = b->in_pos - s->in_start;
+	s->index.size += in_used;
+	s->crc = xz_crc32(b->in + s->in_start, in_used, s->crc);
+}
+
+/*
+ * Decode the Number of Records, Unpadded Size, and Uncompressed Size
+ * fields from the Index field. That is, Index Padding and CRC32 are not
+ * decoded by this function.
+ *
+ * This can return XZ_OK (more input needed), XZ_STREAM_END (everything
+ * successfully decoded), or XZ_DATA_ERROR (input is corrupt).
+ */
+static enum xz_ret dec_index(struct xz_dec *s, struct xz_buf *b)
+{
+	enum xz_ret ret;
+
+	do {
+		ret = dec_vli(s, b->in, &b->in_pos, b->in_size);
+		if (ret != XZ_STREAM_END) {
+			index_update(s, b);
+			return ret;
+		}
+
+		switch (s->index.sequence) {
+		case SEQ_INDEX_COUNT:
+			s->index.count = s->vli;
+
+			/*
+			 * Validate that the Number of Records field
+			 * indicates the same number of Records as
+			 * there were Blocks in the Stream.
+			 */
+			if (s->index.count != s->block.count)
+				return XZ_DATA_ERROR;
+
+			s->index.sequence = SEQ_INDEX_UNPADDED;
+			break;
+
+		case SEQ_INDEX_UNPADDED:
+			s->index.hash.unpadded += s->vli;
+			s->index.sequence = SEQ_INDEX_UNCOMPRESSED;
+			break;
+
+		case SEQ_INDEX_UNCOMPRESSED:
+			s->index.hash.uncompressed += s->vli;
+			s->index.hash.crc32 = xz_crc32(
+					(const uint8_t *)&s->index.hash,
+					sizeof(s->index.hash),
+					s->index.hash.crc32);
+			--s->index.count;
+			s->index.sequence = SEQ_INDEX_UNPADDED;
+			break;
+		}
+	} while (s->index.count > 0);
+
+	return XZ_STREAM_END;
+}
+
+/*
+ * Validate that the next four or eight input bytes match the value
+ * of s->crc. s->pos must be zero when starting to validate the first byte.
+ * The "bits" argument allows using the same code for both CRC32 and CRC64.
+ */
+static enum xz_ret crc_validate(struct xz_dec *s, struct xz_buf *b,
+				uint32_t bits)
+{
+	do {
+		if (b->in_pos == b->in_size)
+			return XZ_OK;
+
+		if (((s->crc >> s->pos) & 0xFF) != b->in[b->in_pos++])
+			return XZ_DATA_ERROR;
+
+		s->pos += 8;
+
+	} while (s->pos < bits);
+
+	s->crc = 0;
+	s->pos = 0;
+
+	return XZ_STREAM_END;
+}
+
+#ifdef XZ_DEC_ANY_CHECK
+/*
+ * Skip over the Check field when the Check ID is not supported.
+ * Returns true once the whole Check field has been skipped over.
+ */
+static bool check_skip(struct xz_dec *s, struct xz_buf *b)
+{
+	while (s->pos < check_sizes[s->check_type]) {
+		if (b->in_pos == b->in_size)
+			return false;
+
+		++b->in_pos;
+		++s->pos;
+	}
+
+	s->pos = 0;
+
+	return true;
+}
+#endif
+
+/* Decode the Stream Header field (the first 12 bytes of the .xz Stream). */
+static enum xz_ret dec_stream_header(struct xz_dec *s)
+{
+	if (!memeq(s->temp.buf, HEADER_MAGIC, HEADER_MAGIC_SIZE))
+		return XZ_FORMAT_ERROR;
+
+	if (xz_crc32(s->temp.buf + HEADER_MAGIC_SIZE, 2, 0)
+			!= get_le32(s->temp.buf + HEADER_MAGIC_SIZE + 2))
+		return XZ_DATA_ERROR;
+
+	if (s->temp.buf[HEADER_MAGIC_SIZE] != 0)
+		return XZ_OPTIONS_ERROR;
+
+	/*
+	 * Of integrity checks, we support none (Check ID = 0),
+	 * CRC32 (Check ID = 1), and optionally CRC64 (Check ID = 4).
+	 * However, if XZ_DEC_ANY_CHECK is defined, we will accept other
+	 * check types too, but then the check won't be verified and
+	 * a warning (XZ_UNSUPPORTED_CHECK) will be given.
+	 */
+	if (s->temp.buf[HEADER_MAGIC_SIZE + 1] > XZ_CHECK_MAX)
+		return XZ_OPTIONS_ERROR;
+
+	s->check_type = s->temp.buf[HEADER_MAGIC_SIZE + 1];
+
+	if (s->check_type > XZ_CHECK_CRC32 && !IS_CRC64(s->check_type)
+			&& !IS_SHA256(s->check_type)) {
+#ifdef XZ_DEC_ANY_CHECK
+		return XZ_UNSUPPORTED_CHECK;
+#else
+		return XZ_OPTIONS_ERROR;
+#endif
+	}
+
+	return XZ_OK;
+}
+
+/* Decode the Stream Footer field (the last 12 bytes of the .xz Stream) */
+static enum xz_ret dec_stream_footer(struct xz_dec *s)
+{
+	if (!memeq(s->temp.buf + 10, FOOTER_MAGIC, FOOTER_MAGIC_SIZE))
+		return XZ_DATA_ERROR;
+
+	if (xz_crc32(s->temp.buf + 4, 6, 0) != get_le32(s->temp.buf))
+		return XZ_DATA_ERROR;
+
+	/*
+	 * Validate Backward Size. Note that we never added the size of the
+	 * Index CRC32 field to s->index.size, thus we use s->index.size / 4
+	 * instead of s->index.size / 4 - 1.
+	 */
+	if ((s->index.size >> 2) != get_le32(s->temp.buf + 4))
+		return XZ_DATA_ERROR;
+
+	if (s->temp.buf[8] != 0 || s->temp.buf[9] != s->check_type)
+		return XZ_DATA_ERROR;
+
+	/*
+	 * Use XZ_STREAM_END instead of XZ_OK to be more convenient
+	 * for the caller.
+	 */
+	return XZ_STREAM_END;
+}
+
+/* Decode the Block Header and initialize the filter chain. */
+static enum xz_ret dec_block_header(struct xz_dec *s)
+{
+	enum xz_ret ret;
+
+	/*
+	 * Validate the CRC32. We know that the temp buffer is at least
+	 * eight bytes so this is safe.
+	 */
+	s->temp.size -= 4;
+	if (xz_crc32(s->temp.buf, s->temp.size, 0)
+			!= get_le32(s->temp.buf + s->temp.size))
+		return XZ_DATA_ERROR;
+
+	s->temp.pos = 2;
+
+	/*
+	 * Catch unsupported Block Flags. We support only one or two filters
+	 * in the chain, so we catch that with the same test.
+	 */
+#ifdef XZ_DEC_BCJ
+	if (s->temp.buf[1] & 0x3E)
+#else
+	if (s->temp.buf[1] & 0x3F)
+#endif
+		return XZ_OPTIONS_ERROR;
+
+	/* Compressed Size */
+	if (s->temp.buf[1] & 0x40) {
+		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
+					!= XZ_STREAM_END)
+			return XZ_DATA_ERROR;
+
+		s->block_header.compressed = s->vli;
+	} else {
+		s->block_header.compressed = VLI_UNKNOWN;
+	}
+
+	/* Uncompressed Size */
+	if (s->temp.buf[1] & 0x80) {
+		if (dec_vli(s, s->temp.buf, &s->temp.pos, s->temp.size)
+				!= XZ_STREAM_END)
+			return XZ_DATA_ERROR;
+
+		s->block_header.uncompressed = s->vli;
+	} else {
+		s->block_header.uncompressed = VLI_UNKNOWN;
+	}
+
+#ifdef XZ_DEC_BCJ
+	/* If there are two filters, the first one must be a BCJ filter. */
+	s->bcj_active = s->temp.buf[1] & 0x01;
+	if (s->bcj_active) {
+		if (s->temp.size - s->temp.pos < 2)
+			return XZ_OPTIONS_ERROR;
+
+		ret = xz_dec_bcj_reset(s->bcj, s->temp.buf[s->temp.pos++]);
+		if (ret != XZ_OK)
+			return ret;
+
+		/*
+		 * We don't support custom start offset,
+		 * so Size of Properties must be zero.
+		 */
+		if (s->temp.buf[s->temp.pos++] != 0x00)
+			return XZ_OPTIONS_ERROR;
+	}
+#endif
+
+	/* Valid Filter Flags always take at least two bytes. */
+	if (s->temp.size - s->temp.pos < 2)
+		return XZ_DATA_ERROR;
+
+	/* Filter ID = LZMA2 */
+	if (s->temp.buf[s->temp.pos++] != 0x21)
+		return XZ_OPTIONS_ERROR;
+
+	/* Size of Properties = 1-byte Filter Properties */
+	if (s->temp.buf[s->temp.pos++] != 0x01)
+		return XZ_OPTIONS_ERROR;
+
+	/* Filter Properties contains LZMA2 dictionary size. */
+	if (s->temp.size - s->temp.pos < 1)
+		return XZ_DATA_ERROR;
+
+	ret = xz_dec_lzma2_reset(s->lzma2, s->temp.buf[s->temp.pos++]);
+	if (ret != XZ_OK)
+		return ret;
+
+	/* The rest must be Header Padding. */
+	while (s->temp.pos < s->temp.size)
+		if (s->temp.buf[s->temp.pos++] != 0x00)
+			return XZ_OPTIONS_ERROR;
+
+	s->temp.pos = 0;
+	s->block.compressed = 0;
+	s->block.uncompressed = 0;
+
+	return XZ_OK;
+}
+
+static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
+{
+	enum xz_ret ret;
+
+	/*
+	 * Store the start position for the case when we are in the middle
+	 * of the Index field.
+	 */
+	s->in_start = b->in_pos;
+
+	while (true) {
+		switch (s->sequence) {
+		case SEQ_STREAM_HEADER:
+			/*
+			 * Stream Header is copied to s->temp, and then
+			 * decoded from there. This way if the caller
+			 * gives us only little input at a time, we can
+			 * still keep the Stream Header decoding code
+			 * simple. Similar approach is used in many places
+			 * in this file.
+			 */
+			if (!fill_temp(s, b))
+				return XZ_OK;
+
+			/*
+			 * If dec_stream_header() returns
+			 * XZ_UNSUPPORTED_CHECK, it is still possible
+			 * to continue decoding if working in multi-call
+			 * mode. Thus, update s->sequence before calling
+			 * dec_stream_header().
+			 */
+			s->sequence = SEQ_BLOCK_START;
+
+			ret = dec_stream_header(s);
+			if (ret != XZ_OK)
+				return ret;
+
+			fallthrough;
+
+		case SEQ_BLOCK_START:
+			/* We need one byte of input to continue. */
+			if (b->in_pos == b->in_size)
+				return XZ_OK;
+
+			/* See if this is the beginning of the Index field. */
+			if (b->in[b->in_pos] == 0) {
+				s->in_start = b->in_pos++;
+				s->sequence = SEQ_INDEX;
+				break;
+			}
+
+			/*
+			 * Calculate the size of the Block Header and
+			 * prepare to decode it.
+			 */
+			s->block_header.size
+				= ((uint32_t)b->in[b->in_pos] + 1) * 4;
+
+			s->temp.size = s->block_header.size;
+			s->temp.pos = 0;
+			s->sequence = SEQ_BLOCK_HEADER;
+
+			fallthrough;
+
+		case SEQ_BLOCK_HEADER:
+			if (!fill_temp(s, b))
+				return XZ_OK;
+
+			ret = dec_block_header(s);
+			if (ret != XZ_OK)
+				return ret;
+
+#ifdef XZ_USE_SHA256
+			if (s->check_type == XZ_CHECK_SHA256)
+				xz_sha256_reset(&s->sha256);
+#endif
+
+			s->sequence = SEQ_BLOCK_UNCOMPRESS;
+
+			fallthrough;
+
+		case SEQ_BLOCK_UNCOMPRESS:
+			ret = dec_block(s, b);
+			if (ret != XZ_STREAM_END)
+				return ret;
+
+			s->sequence = SEQ_BLOCK_PADDING;
+
+			fallthrough;
+
+		case SEQ_BLOCK_PADDING:
+			/*
+			 * Size of Compressed Data + Block Padding
+			 * must be a multiple of four. We don't need
+			 * s->block.compressed for anything else
+			 * anymore, so we use it here to test the size
+			 * of the Block Padding field.
+			 */
+			while (s->block.compressed & 3) {
+				if (b->in_pos == b->in_size)
+					return XZ_OK;
+
+				if (b->in[b->in_pos++] != 0)
+					return XZ_DATA_ERROR;
+
+				++s->block.compressed;
+			}
+
+			s->sequence = SEQ_BLOCK_CHECK;
+
+			fallthrough;
+
+		case SEQ_BLOCK_CHECK:
+			if (s->check_type == XZ_CHECK_CRC32) {
+				ret = crc_validate(s, b, 32);
+				if (ret != XZ_STREAM_END)
+					return ret;
+			}
+			else if (IS_CRC64(s->check_type)) {
+				ret = crc_validate(s, b, 64);
+				if (ret != XZ_STREAM_END)
+					return ret;
+			}
+#ifdef XZ_USE_SHA256
+			else if (s->check_type == XZ_CHECK_SHA256) {
+				s->temp.size = 32;
+				if (!fill_temp(s, b))
+					return XZ_OK;
+
+				if (!xz_sha256_validate(s->temp.buf,
+							&s->sha256))
+					return XZ_DATA_ERROR;
+
+				s->pos = 0;
+			}
+#endif
+#ifdef XZ_DEC_ANY_CHECK
+			else if (!check_skip(s, b)) {
+				return XZ_OK;
+			}
+#endif
+
+			s->sequence = SEQ_BLOCK_START;
+			break;
+
+		case SEQ_INDEX:
+			ret = dec_index(s, b);
+			if (ret != XZ_STREAM_END)
+				return ret;
+
+			s->sequence = SEQ_INDEX_PADDING;
+
+			fallthrough;
+
+		case SEQ_INDEX_PADDING:
+			while ((s->index.size + (b->in_pos - s->in_start))
+					& 3) {
+				if (b->in_pos == b->in_size) {
+					index_update(s, b);
+					return XZ_OK;
+				}
+
+				if (b->in[b->in_pos++] != 0)
+					return XZ_DATA_ERROR;
+			}
+
+			/* Finish the CRC32 value and Index size. */
+			index_update(s, b);
+
+			/* Compare the hashes to validate the Index field. */
+			if (!memeq(&s->block.hash, &s->index.hash,
+					sizeof(s->block.hash)))
+				return XZ_DATA_ERROR;
+
+			s->sequence = SEQ_INDEX_CRC32;
+
+			fallthrough;
+
+		case SEQ_INDEX_CRC32:
+			ret = crc_validate(s, b, 32);
+			if (ret != XZ_STREAM_END)
+				return ret;
+
+			s->temp.size = STREAM_HEADER_SIZE;
+			s->sequence = SEQ_STREAM_FOOTER;
+
+			fallthrough;
+
+		case SEQ_STREAM_FOOTER:
+			if (!fill_temp(s, b))
+				return XZ_OK;
+
+			return dec_stream_footer(s);
+
+		case SEQ_STREAM_PADDING:
+			/* Never reached, only silencing a warning */
+			break;
+		}
+	}
+
+	/* Never reached */
+}
+
+/*
+ * xz_dec_run() is a wrapper for dec_main() to handle some special cases in
+ * multi-call and single-call decoding.
+ *
+ * In multi-call mode, we must return XZ_BUF_ERROR when it seems clear that we
+ * are not going to make any progress anymore. This is to prevent the caller
+ * from calling us infinitely when the input file is truncated or otherwise
+ * corrupt. Since zlib-style API allows that the caller fills the input buffer
+ * only when the decoder doesn't produce any new output, we have to be careful
+ * to avoid returning XZ_BUF_ERROR too easily: XZ_BUF_ERROR is returned only
+ * after the second consecutive call to xz_dec_run() that makes no progress.
+ *
+ * In single-call mode, if we couldn't decode everything and no error
+ * occurred, either the input is truncated or the output buffer is too small.
+ * Since we know that the last input byte never produces any output, we know
+ * that if all the input was consumed and decoding wasn't finished, the file
+ * must be corrupt. Otherwise the output buffer has to be too small or the
+ * file is corrupt in a way that decoding it produces too big output.
+ *
+ * If single-call decoding fails, we reset b->in_pos and b->out_pos back to
+ * their original values. This is because with some filter chains there won't
+ * be any valid uncompressed data in the output buffer unless the decoding
+ * actually succeeds (that's the price to pay of using the output buffer as
+ * the workspace).
+ */
+XZ_EXTERN enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b)
+{
+	size_t in_start;
+	size_t out_start;
+	enum xz_ret ret;
+
+	if (DEC_IS_SINGLE(s->mode))
+		xz_dec_reset(s);
+
+	in_start = b->in_pos;
+	out_start = b->out_pos;
+	ret = dec_main(s, b);
+
+	if (DEC_IS_SINGLE(s->mode)) {
+		if (ret == XZ_OK)
+			ret = b->in_pos == b->in_size
+					? XZ_DATA_ERROR : XZ_BUF_ERROR;
+
+		if (ret != XZ_STREAM_END) {
+			b->in_pos = in_start;
+			b->out_pos = out_start;
+		}
+
+	} else if (ret == XZ_OK && in_start == b->in_pos
+			&& out_start == b->out_pos) {
+		if (s->allow_buf_error)
+			ret = XZ_BUF_ERROR;
+
+		s->allow_buf_error = true;
+	} else {
+		s->allow_buf_error = false;
+	}
+
+	return ret;
+}
+
+#ifdef XZ_DEC_CONCATENATED
+XZ_EXTERN enum xz_ret xz_dec_catrun(struct xz_dec *s, struct xz_buf *b,
+				    int finish)
+{
+	enum xz_ret ret;
+
+	if (DEC_IS_SINGLE(s->mode)) {
+		xz_dec_reset(s);
+		finish = true;
+	}
+
+	while (true) {
+		if (s->sequence == SEQ_STREAM_PADDING) {
+			/*
+			 * Skip Stream Padding. Its size must be a multiple
+			 * of four bytes which is tracked with s->pos.
+			 */
+			while (true) {
+				if (b->in_pos == b->in_size) {
+					/*
+					 * Note that if we are repeatedly
+					 * given no input and finish is false,
+					 * we will keep returning XZ_OK even
+					 * though no progress is being made.
+					 * The lack of XZ_BUF_ERROR support
+					 * isn't a problem here because a
+					 * reasonable caller will eventually
+					 * provide more input or set finish
+					 * to true.
+					 */
+					if (!finish)
+						return XZ_OK;
+
+					if (s->pos != 0)
+						return XZ_DATA_ERROR;
+
+					return XZ_STREAM_END;
+				}
+
+				if (b->in[b->in_pos] != 0x00) {
+					if (s->pos != 0)
+						return XZ_DATA_ERROR;
+
+					break;
+				}
+
+				++b->in_pos;
+				s->pos = (s->pos + 1) & 3;
+			}
+
+			/*
+			 * More input remains. It should be a new Stream.
+			 *
+			 * In single-call mode xz_dec_run() will always call
+			 * xz_dec_reset(). Thus, we need to do it here only
+			 * in multi-call mode.
+			 */
+			if (DEC_IS_MULTI(s->mode))
+				xz_dec_reset(s);
+		}
+
+		ret = xz_dec_run(s, b);
+
+		if (ret != XZ_STREAM_END)
+			break;
+
+		s->sequence = SEQ_STREAM_PADDING;
+	}
+
+	return ret;
+}
+#endif
+
+XZ_EXTERN struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max)
+{
+	struct xz_dec *s = kmalloc(sizeof(*s), GFP_KERNEL);
+	if (s == NULL)
+		return NULL;
+
+	s->mode = mode;
+
+#ifdef XZ_DEC_BCJ
+	s->bcj = xz_dec_bcj_create(DEC_IS_SINGLE(mode));
+	if (s->bcj == NULL)
+		goto error_bcj;
+#endif
+
+	s->lzma2 = xz_dec_lzma2_create(mode, dict_max);
+	if (s->lzma2 == NULL)
+		goto error_lzma2;
+
+	xz_dec_reset(s);
+	return s;
+
+error_lzma2:
+#ifdef XZ_DEC_BCJ
+	xz_dec_bcj_end(s->bcj);
+error_bcj:
+#endif
+	kfree(s);
+	return NULL;
+}
+
+XZ_EXTERN void xz_dec_reset(struct xz_dec *s)
+{
+	s->sequence = SEQ_STREAM_HEADER;
+	s->allow_buf_error = false;
+	s->pos = 0;
+	s->crc = 0;
+	memzero(&s->block, sizeof(s->block));
+	memzero(&s->index, sizeof(s->index));
+	s->temp.pos = 0;
+	s->temp.size = STREAM_HEADER_SIZE;
+}
+
+XZ_EXTERN void xz_dec_end(struct xz_dec *s)
+{
+	if (s != NULL) {
+		xz_dec_lzma2_end(s->lzma2);
+#ifdef XZ_DEC_BCJ
+		xz_dec_bcj_end(s->bcj);
+#endif
+		kfree(s);
+	}
+}

android/app/src/main/cpp/xz/xz_lzma2.h

@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/*
+ * LZMA2 definitions
+ *
+ * Authors: Lasse Collin <lasse.collin@tukaani.org>
+ *          Igor Pavlov <https://7-zip.org/>
+ */
+
+#ifndef XZ_LZMA2_H
+#define XZ_LZMA2_H
+
+/* Range coder constants */
+#define RC_SHIFT_BITS 8
+#define RC_TOP_BITS 24
+#define RC_TOP_VALUE (1 << RC_TOP_BITS)
+#define RC_BIT_MODEL_TOTAL_BITS 11
+#define RC_BIT_MODEL_TOTAL (1 << RC_BIT_MODEL_TOTAL_BITS)
+#define RC_MOVE_BITS 5
+
+/*
+ * Maximum number of position states. A position state is the lowest pb
+ * number of bits of the current uncompressed offset. In some places there
+ * are different sets of probabilities for different position states.
+ */
+#define POS_STATES_MAX (1 << 4)
+
+/*
+ * This enum is used to track which LZMA symbols have occurred most recently
+ * and in which order. This information is used to predict the next symbol.
+ *
+ * Symbols:
+ *  - Literal: One 8-bit byte
+ *  - Match: Repeat a chunk of data at some distance
+ *  - Long repeat: Multi-byte match at a recently seen distance
+ *  - Short repeat: One-byte repeat at a recently seen distance
+ *
+ * The symbol names are in from STATE_oldest_older_previous. REP means
+ * either short or long repeated match, and NONLIT means any non-literal.
+ */
+enum lzma_state {
+	STATE_LIT_LIT,
+	STATE_MATCH_LIT_LIT,
+	STATE_REP_LIT_LIT,
+	STATE_SHORTREP_LIT_LIT,
+	STATE_MATCH_LIT,
+	STATE_REP_LIT,
+	STATE_SHORTREP_LIT,
+	STATE_LIT_MATCH,
+	STATE_LIT_LONGREP,
+	STATE_LIT_SHORTREP,
+	STATE_NONLIT_MATCH,
+	STATE_NONLIT_REP
+};
+
+/* Total number of states */
+#define STATES 12
+
+/* The lowest 7 states indicate that the previous state was a literal. */
+#define LIT_STATES 7
+
+/* Indicate that the latest symbol was a literal. */
+static inline void lzma_state_literal(enum lzma_state *state)
+{
+	if (*state <= STATE_SHORTREP_LIT_LIT)
+		*state = STATE_LIT_LIT;
+	else if (*state <= STATE_LIT_SHORTREP)
+		*state -= 3;
+	else
+		*state -= 6;
+}
+
+/* Indicate that the latest symbol was a match. */
+static inline void lzma_state_match(enum lzma_state *state)
+{
+	*state = *state < LIT_STATES ? STATE_LIT_MATCH : STATE_NONLIT_MATCH;
+}
+
+/* Indicate that the latest state was a long repeated match. */
+static inline void lzma_state_long_rep(enum lzma_state *state)
+{
+	*state = *state < LIT_STATES ? STATE_LIT_LONGREP : STATE_NONLIT_REP;
+}
+
+/* Indicate that the latest symbol was a short match. */
+static inline void lzma_state_short_rep(enum lzma_state *state)
+{
+	*state = *state < LIT_STATES ? STATE_LIT_SHORTREP : STATE_NONLIT_REP;
+}
+
+/* Test if the previous symbol was a literal. */
+static inline bool lzma_state_is_literal(enum lzma_state state)
+{
+	return state < LIT_STATES;
+}
+
+/* Each literal coder is divided in three sections:
+ *   - 0x001-0x0FF: Without match byte
+ *   - 0x101-0x1FF: With match byte; match bit is 0
+ *   - 0x201-0x2FF: With match byte; match bit is 1
+ *
+ * Match byte is used when the previous LZMA symbol was something else than
+ * a literal (that is, it was some kind of match).
+ */
+#define LITERAL_CODER_SIZE 0x300
+
+/* Maximum number of literal coders */
+#define LITERAL_CODERS_MAX (1 << 4)
+
+/* Minimum length of a match is two bytes. */
+#define MATCH_LEN_MIN 2
+
+/* Match length is encoded with 4, 5, or 10 bits.
+ *
+ * Length   Bits
+ *  2-9      4 = Choice=0 + 3 bits
+ * 10-17     5 = Choice=1 + Choice2=0 + 3 bits
+ * 18-273   10 = Choice=1 + Choice2=1 + 8 bits
+ */
+#define LEN_LOW_BITS 3
+#define LEN_LOW_SYMBOLS (1 << LEN_LOW_BITS)
+#define LEN_MID_BITS 3
+#define LEN_MID_SYMBOLS (1 << LEN_MID_BITS)
+#define LEN_HIGH_BITS 8
+#define LEN_HIGH_SYMBOLS (1 << LEN_HIGH_BITS)
+#define LEN_SYMBOLS (LEN_LOW_SYMBOLS + LEN_MID_SYMBOLS + LEN_HIGH_SYMBOLS)
+
+/*
+ * Maximum length of a match is 273 which is a result of the encoding
+ * described above.
+ */
+#define MATCH_LEN_MAX (MATCH_LEN_MIN + LEN_SYMBOLS - 1)
+
+/*
+ * Different sets of probabilities are used for match distances that have
+ * very short match length: Lengths of 2, 3, and 4 bytes have a separate
+ * set of probabilities for each length. The matches with longer length
+ * use a shared set of probabilities.
+ */
+#define DIST_STATES 4
+
+/*
+ * Get the index of the appropriate probability array for decoding
+ * the distance slot.
+ */
+static inline uint32_t lzma_get_dist_state(uint32_t len)
+{
+	return len < DIST_STATES + MATCH_LEN_MIN
+			? len - MATCH_LEN_MIN : DIST_STATES - 1;
+}
+
+/*
+ * The highest two bits of a 32-bit match distance are encoded using six bits.
+ * This six-bit value is called a distance slot. This way encoding a 32-bit
+ * value takes 6-36 bits, larger values taking more bits.
+ */
+#define DIST_SLOT_BITS 6
+#define DIST_SLOTS (1 << DIST_SLOT_BITS)
+
+/* Match distances up to 127 are fully encoded using probabilities. Since
+ * the highest two bits (distance slot) are always encoded using six bits,
+ * the distances 0-3 don't need any additional bits to encode, since the
+ * distance slot itself is the same as the actual distance. DIST_MODEL_START
+ * indicates the first distance slot where at least one additional bit is
+ * needed.
+ */
+#define DIST_MODEL_START 4
+
+/*
+ * Match distances greater than 127 are encoded in three pieces:
+ *   - distance slot: the highest two bits
+ *   - direct bits: 2-26 bits below the highest two bits
+ *   - alignment bits: four lowest bits
+ *
+ * Direct bits don't use any probabilities.
+ *
+ * The distance slot value of 14 is for distances 128-191.
+ */
+#define DIST_MODEL_END 14
+
+/* Distance slots that indicate a distance <= 127. */
+#define FULL_DISTANCES_BITS (DIST_MODEL_END / 2)
+#define FULL_DISTANCES (1 << FULL_DISTANCES_BITS)
+
+/*
+ * For match distances greater than 127, only the highest two bits and the
+ * lowest four bits (alignment) is encoded using probabilities.
+ */
+#define ALIGN_BITS 4
+#define ALIGN_SIZE (1 << ALIGN_BITS)
+#define ALIGN_MASK (ALIGN_SIZE - 1)
+
+/* Total number of all probability variables */
+#define PROBS_TOTAL (1846 + LITERAL_CODERS_MAX * LITERAL_CODER_SIZE)
+
+/*
+ * LZMA remembers the four most recent match distances. Reusing these
+ * distances tends to take less space than re-encoding the actual
+ * distance value.
+ */
+#define REPS 4
+
+#endif

android/app/src/main/cpp/xz/xz_private.h

@@ -0,0 +1,189 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/*
+ * Private includes and definitions
+ *
+ * Author: Lasse Collin <lasse.collin@tukaani.org>
+ */
+
+#ifndef XZ_PRIVATE_H
+#define XZ_PRIVATE_H
+
+#ifdef __KERNEL__
+#	include <linux/xz.h>
+#	include <linux/kernel.h>
+#	include <linux/unaligned.h>
+	/* XZ_PREBOOT may be defined only via decompress_unxz.c. */
+#	ifndef XZ_PREBOOT
+#		include <linux/slab.h>
+#		include <linux/vmalloc.h>
+#		include <linux/string.h>
+#		ifdef CONFIG_XZ_DEC_X86
+#			define XZ_DEC_X86
+#		endif
+#		ifdef CONFIG_XZ_DEC_POWERPC
+#			define XZ_DEC_POWERPC
+#		endif
+#		ifdef CONFIG_XZ_DEC_IA64
+#			define XZ_DEC_IA64
+#		endif
+#		ifdef CONFIG_XZ_DEC_ARM
+#			define XZ_DEC_ARM
+#		endif
+#		ifdef CONFIG_XZ_DEC_ARMTHUMB
+#			define XZ_DEC_ARMTHUMB
+#		endif
+#		ifdef CONFIG_XZ_DEC_SPARC
+#			define XZ_DEC_SPARC
+#		endif
+#		ifdef CONFIG_XZ_DEC_ARM64
+#			define XZ_DEC_ARM64
+#		endif
+#		ifdef CONFIG_XZ_DEC_RISCV
+#			define XZ_DEC_RISCV
+#		endif
+#		ifdef CONFIG_XZ_DEC_MICROLZMA
+#			define XZ_DEC_MICROLZMA
+#		endif
+#		define memeq(a, b, size) (memcmp(a, b, size) == 0)
+#		define memzero(buf, size) memset(buf, 0, size)
+#	endif
+#	define get_le32(p) le32_to_cpup((const uint32_t *)(p))
+#else
+	/*
+	 * For userspace builds, use a separate header to define the required
+	 * macros and functions. This makes it easier to adapt the code into
+	 * different environments and avoids clutter in the Linux kernel tree.
+	 */
+#	include "xz_config.h"
+#endif
+
+/* If no specific decoding mode is requested, enable support for all modes. */
+#if !defined(XZ_DEC_SINGLE) && !defined(XZ_DEC_PREALLOC) \
+		&& !defined(XZ_DEC_DYNALLOC)
+#	define XZ_DEC_SINGLE
+#	define XZ_DEC_PREALLOC
+#	define XZ_DEC_DYNALLOC
+#endif
+
+/*
+ * The DEC_IS_foo(mode) macros are used in "if" statements. If only some
+ * of the supported modes are enabled, these macros will evaluate to true or
+ * false at compile time and thus allow the compiler to omit unneeded code.
+ */
+#ifdef XZ_DEC_SINGLE
+#	define DEC_IS_SINGLE(mode) ((mode) == XZ_SINGLE)
+#else
+#	define DEC_IS_SINGLE(mode) (false)
+#endif
+
+#ifdef XZ_DEC_PREALLOC
+#	define DEC_IS_PREALLOC(mode) ((mode) == XZ_PREALLOC)
+#else
+#	define DEC_IS_PREALLOC(mode) (false)
+#endif
+
+#ifdef XZ_DEC_DYNALLOC
+#	define DEC_IS_DYNALLOC(mode) ((mode) == XZ_DYNALLOC)
+#else
+#	define DEC_IS_DYNALLOC(mode) (false)
+#endif
+
+#if !defined(XZ_DEC_SINGLE)
+#	define DEC_IS_MULTI(mode) (true)
+#elif defined(XZ_DEC_PREALLOC) || defined(XZ_DEC_DYNALLOC)
+#	define DEC_IS_MULTI(mode) ((mode) != XZ_SINGLE)
+#else
+#	define DEC_IS_MULTI(mode) (false)
+#endif
+
+/*
+ * If any of the BCJ filter decoders are wanted, define XZ_DEC_BCJ.
+ * XZ_DEC_BCJ is used to enable generic support for BCJ decoders.
+ */
+#ifndef XZ_DEC_BCJ
+#	if defined(XZ_DEC_X86) || defined(XZ_DEC_POWERPC) \
+			|| defined(XZ_DEC_IA64) \
+			|| defined(XZ_DEC_ARM) || defined(XZ_DEC_ARMTHUMB) \
+			|| defined(XZ_DEC_SPARC) || defined(XZ_DEC_ARM64) \
+			|| defined(XZ_DEC_RISCV)
+#		define XZ_DEC_BCJ
+#	endif
+#endif
+
+struct xz_sha256 {
+	/* Buffered input data */
+	uint8_t data[64];
+
+	/* Internal state and the final hash value */
+	uint32_t state[8];
+
+	/* Size of the input data */
+	uint64_t size;
+};
+
+/* Reset the SHA-256 state to prepare for a new calculation. */
+XZ_EXTERN void xz_sha256_reset(struct xz_sha256 *s);
+
+/* Update the SHA-256 state with new data. */
+XZ_EXTERN void xz_sha256_update(const uint8_t *buf, size_t size,
+				struct xz_sha256 *s);
+
+/*
+ * Finish the SHA-256 calculation. Compare the result with the first 32 bytes
+ * from buf. Return true if the values are equal and false if they aren't.
+ */
+XZ_EXTERN bool xz_sha256_validate(const uint8_t *buf, struct xz_sha256 *s);
+
+/*
+ * Allocate memory for LZMA2 decoder. xz_dec_lzma2_reset() must be used
+ * before calling xz_dec_lzma2_run().
+ */
+XZ_EXTERN struct xz_dec_lzma2 *xz_dec_lzma2_create(enum xz_mode mode,
+						   uint32_t dict_max);
+
+/*
+ * Decode the LZMA2 properties (one byte) and reset the decoder. Return
+ * XZ_OK on success, XZ_MEMLIMIT_ERROR if the preallocated dictionary is not
+ * big enough, and XZ_OPTIONS_ERROR if props indicates something that this
+ * decoder doesn't support.
+ */
+XZ_EXTERN enum xz_ret xz_dec_lzma2_reset(struct xz_dec_lzma2 *s,
+					 uint8_t props);
+
+/* Decode raw LZMA2 stream from b->in to b->out. */
+XZ_EXTERN enum xz_ret xz_dec_lzma2_run(struct xz_dec_lzma2 *s,
+				       struct xz_buf *b);
+
+/* Free the memory allocated for the LZMA2 decoder. */
+XZ_EXTERN void xz_dec_lzma2_end(struct xz_dec_lzma2 *s);
+
+#ifdef XZ_DEC_BCJ
+/*
+ * Allocate memory for BCJ decoders. xz_dec_bcj_reset() must be used before
+ * calling xz_dec_bcj_run().
+ */
+XZ_EXTERN struct xz_dec_bcj *xz_dec_bcj_create(bool single_call);
+
+/*
+ * Decode the Filter ID of a BCJ filter. This implementation doesn't
+ * support custom start offsets, so no decoding of Filter Properties
+ * is needed. Returns XZ_OK if the given Filter ID is supported.
+ * Otherwise XZ_OPTIONS_ERROR is returned.
+ */
+XZ_EXTERN enum xz_ret xz_dec_bcj_reset(struct xz_dec_bcj *s, uint8_t id);
+
+/*
+ * Decode raw BCJ + LZMA2 stream. This must be used only if there actually is
+ * a BCJ filter in the chain. If the chain has only LZMA2, xz_dec_lzma2_run()
+ * must be called directly.
+ */
+XZ_EXTERN enum xz_ret xz_dec_bcj_run(struct xz_dec_bcj *s,
+				     struct xz_dec_lzma2 *lzma2,
+				     struct xz_buf *b);
+
+/* Free the memory allocated for the BCJ filters. */
+#define xz_dec_bcj_end(s) kfree(s)
+#endif
+
+#endif

android/app/src/main/cpp/xz/xz_sha256.c

@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: 0BSD
+
+/*
+ * SHA-256
+ *
+ * This is based on the XZ Utils version which is based public domain code
+ * from Crypto++ Library 5.5.1 released in 2007: https://www.cryptopp.com/
+ *
+ * Authors: Wei Dai
+ *          Lasse Collin <lasse.collin@tukaani.org>
+ */
+
+#include "xz_private.h"
+
+static inline uint32_t
+rotr_32(uint32_t num, unsigned amount)
+{
+	return (num >> amount) | (num << (32 - amount));
+}
+
+#define blk0(i) (W[i] = get_be32(&data[4 * i]))
+#define blk2(i) (W[i & 15] += s1(W[(i - 2) & 15]) + W[(i - 7) & 15] \
+		+ s0(W[(i - 15) & 15]))
+
+#define Ch(x, y, z) (z ^ (x & (y ^ z)))
+#define Maj(x, y, z) ((x & (y ^ z)) + (y & z))
+
+#define a(i) T[(0 - i) & 7]
+#define b(i) T[(1 - i) & 7]
+#define c(i) T[(2 - i) & 7]
+#define d(i) T[(3 - i) & 7]
+#define e(i) T[(4 - i) & 7]
+#define f(i) T[(5 - i) & 7]
+#define g(i) T[(6 - i) & 7]
+#define h(i) T[(7 - i) & 7]
+
+#define R(i, j, blk) \
+	h(i) += S1(e(i)) + Ch(e(i), f(i), g(i)) + SHA256_K[i + j] + blk; \
+	d(i) += h(i); \
+	h(i) += S0(a(i)) + Maj(a(i), b(i), c(i))
+#define R0(i) R(i, 0, blk0(i))
+#define R2(i) R(i, j, blk2(i))
+
+#define S0(x) rotr_32(x ^ rotr_32(x ^ rotr_32(x, 9), 11), 2)
+#define S1(x) rotr_32(x ^ rotr_32(x ^ rotr_32(x, 14), 5), 6)
+#define s0(x) (rotr_32(x ^ rotr_32(x, 11), 7) ^ (x >> 3))
+#define s1(x) (rotr_32(x ^ rotr_32(x, 2), 17) ^ (x >> 10))
+
+static const uint32_t SHA256_K[64] = {
+	0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
+	0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+	0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
+	0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+	0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
+	0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+	0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
+	0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+	0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
+	0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+	0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
+	0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+	0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
+	0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+	0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
+	0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
+};
+
+static void
+transform(uint32_t state[8], const uint8_t data[64])
+{
+	uint32_t W[16];
+	uint32_t T[8];
+	unsigned int j;
+
+	/* Copy state[] to working vars. */
+	memcpy(T, state, sizeof(T));
+
+	/* The first 16 operations unrolled */
+	R0( 0); R0( 1); R0( 2); R0( 3);
+	R0( 4); R0( 5); R0( 6); R0( 7);
+	R0( 8); R0( 9); R0(10); R0(11);
+	R0(12); R0(13); R0(14); R0(15);
+
+	/* The remaining 48 operations partially unrolled */
+	for (j = 16; j < 64; j += 16) {
+		R2( 0); R2( 1); R2( 2); R2( 3);
+		R2( 4); R2( 5); R2( 6); R2( 7);
+		R2( 8); R2( 9); R2(10); R2(11);
+		R2(12); R2(13); R2(14); R2(15);
+	}
+
+	/* Add the working vars back into state[]. */
+	state[0] += a(0);
+	state[1] += b(0);
+	state[2] += c(0);
+	state[3] += d(0);
+	state[4] += e(0);
+	state[5] += f(0);
+	state[6] += g(0);
+	state[7] += h(0);
+}
+
+XZ_EXTERN void xz_sha256_reset(struct xz_sha256 *s)
+{
+	static const uint32_t initial_state[8] = {
+		0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
+		0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19
+	};
+
+	memcpy(s->state, initial_state, sizeof(initial_state));
+	s->size = 0;
+}
+
+XZ_EXTERN void xz_sha256_update(const uint8_t *buf, size_t size,
+				struct xz_sha256 *s)
+{
+	size_t copy_start;
+	size_t copy_size;
+
+	/*
+	 * Copy the input data into a properly aligned temporary buffer.
+	 * This way we can be called with arbitrarily sized buffers
+	 * (no need to be a multiple of 64 bytes).
+	 *
+	 * Full 64-byte chunks could be processed directly from buf with
+	 * unaligned access. It seemed to make very little difference in
+	 * speed on x86-64 though. Thus it was omitted.
+	 */
+	while (size > 0) {
+		copy_start = s->size & 0x3F;
+		copy_size = 64 - copy_start;
+		if (copy_size > size)
+			copy_size = size;
+
+		memcpy(s->data + copy_start, buf, copy_size);
+
+		buf += copy_size;
+		size -= copy_size;
+		s->size += copy_size;
+
+		if ((s->size & 0x3F) == 0)
+			transform(s->state, s->data);
+	}
+}
+
+XZ_EXTERN bool xz_sha256_validate(const uint8_t *buf, struct xz_sha256 *s)
+{
+	/*
+	 * Add padding as described in RFC 3174 (it describes SHA-1 but
+	 * the same padding style is used for SHA-256 too).
+	 */
+	size_t i = s->size & 0x3F;
+	s->data[i++] = 0x80;
+
+	while (i != 64 - 8) {
+		if (i == 64) {
+			transform(s->state, s->data);
+			i = 0;
+		}
+
+		s->data[i++] = 0x00;
+	}
+
+	/* Convert the message size from bytes to bits. */
+	s->size *= 8;
+
+	/*
+	 * Store the message size in big endian byte order and
+	 * calculate the final hash value.
+	 */
+	for (i = 0; i < 8; ++i)
+		s->data[64 - 8 + i] = (uint8_t)(s->size >> ((7 - i) * 8));
+
+	transform(s->state, s->data);
+
+	/* Compare if the hash value matches the first 32 bytes in buf. */
+	for (i = 0; i < 8; ++i)
+		if (get_unaligned_be32(buf + 4 * i) != s->state[i])
+			return false;
+
+	return true;
+}

android/app/src/main/cpp/xz/xz_stream.h

@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/*
+ * Definitions for handling the .xz file format
+ *
+ * Author: Lasse Collin <lasse.collin@tukaani.org>
+ */
+
+#ifndef XZ_STREAM_H
+#define XZ_STREAM_H
+
+#if defined(__KERNEL__) && !XZ_INTERNAL_CRC32
+#	include <linux/crc32.h>
+#	undef crc32
+#	define xz_crc32(buf, size, crc) \
+		(~crc32_le(~(uint32_t)(crc), buf, size))
+#endif
+
+/*
+ * See the .xz file format specification at
+ * https://tukaani.org/xz/xz-file-format.txt
+ * to understand the container format.
+ */
+
+#define STREAM_HEADER_SIZE 12
+
+#define HEADER_MAGIC "\3757zXZ"
+#define HEADER_MAGIC_SIZE 6
+
+#define FOOTER_MAGIC "YZ"
+#define FOOTER_MAGIC_SIZE 2
+
+/*
+ * Variable-length integer can hold a 63-bit unsigned integer or a special
+ * value indicating that the value is unknown.
+ *
+ * Experimental: vli_type can be defined to uint32_t to save a few bytes
+ * in code size (no effect on speed). Doing so limits the uncompressed and
+ * compressed size of the file to less than 256 MiB and may also weaken
+ * error detection slightly.
+ */
+typedef uint64_t vli_type;
+
+#define VLI_MAX ((vli_type)-1 / 2)
+#define VLI_UNKNOWN ((vli_type)-1)
+
+/* Maximum encoded size of a VLI */
+#define VLI_BYTES_MAX (sizeof(vli_type) * 8 / 7)
+
+/* Integrity Check types */
+enum xz_check {
+	XZ_CHECK_NONE = 0,
+	XZ_CHECK_CRC32 = 1,
+	XZ_CHECK_CRC64 = 4,
+	XZ_CHECK_SHA256 = 10
+};
+
+/* Maximum possible Check ID */
+#define XZ_CHECK_MAX 15
+
+#endif

android/app/src/main/java/me/kavishdevar/librepods/MainActivity.kt

@@ -126,7 +126,7 @@ import me.kavishdevar.librepods.screens.HearingAidAdjustmentsScreen
 import me.kavishdevar.librepods.screens.HearingAidScreen
 import me.kavishdevar.librepods.screens.HearingProtectionScreen
 import me.kavishdevar.librepods.screens.LongPress
-import me.kavishdevar.librepods.screens.Onboarding
+// import me.kavishdevar.librepods.screens.Onboarding
 import me.kavishdevar.librepods.screens.OpenSourceLicensesScreen
 import me.kavishdevar.librepods.screens.RenameScreen
 import me.kavishdevar.librepods.screens.TransparencySettingsScreen
@@ -135,7 +135,7 @@ import me.kavishdevar.librepods.screens.UpdateHearingTestScreen
 import me.kavishdevar.librepods.screens.VersionScreen
 import me.kavishdevar.librepods.services.AirPodsService
 import me.kavishdevar.librepods.ui.theme.LibrePodsTheme
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
+// import me.kavishdevar.librepods.utils.RadareOffsetFinder
 import kotlin.io.encoding.Base64
 import kotlin.io.encoding.ExperimentalEncodingApi
 
@@ -267,7 +267,7 @@ class MainActivity : ComponentActivity() {
 fun Main() {
     val isConnected = remember { mutableStateOf(false) }
     val isRemotelyConnected = remember { mutableStateOf(false) }
-    val hookAvailable = RadareOffsetFinder(LocalContext.current).isHookOffsetAvailable()
+//    val hookAvailable = RadareOffsetFinder(LocalContext.current).isHookOffsetAvailable()
     val context = LocalContext.current
     var canDrawOverlays by remember { mutableStateOf(Settings.canDrawOverlays(context)) }
     val overlaySkipped = remember { mutableStateOf(context.getSharedPreferences("settings", MODE_PRIVATE).getBoolean("overlay_permission_skipped", false)) }
@@ -321,7 +321,7 @@ fun Main() {
             ) {
                 NavHost(
                     navController = navController,
-                    startDestination = if (hookAvailable) "settings" else "onboarding",
+                    startDestination = "settings", // if (hookAvailable) "settings" else "onboarding",
                     enterTransition = {
                         slideInHorizontally(
                             initialOffsetX = { it },
@@ -379,9 +379,9 @@ fun Main() {
                     composable("head_tracking") {
                         HeadTrackingScreen()
                     }
-                    composable("onboarding") {
+                    /*composable("onboarding") {
                         Onboarding(navController, context)
-                    }
+                    }*/
                     composable("accessibility") {
                         AccessibilitySettingsScreen(navController)
                     }
@@ -419,7 +419,7 @@ fun Main() {
 
             LaunchedEffect(navController) {
                 navController.addOnDestinationChangedListener { _, destination, _ ->
-                    showBackButton.value = destination.route != "settings" && destination.route != "onboarding"
+                    showBackButton.value = destination.route != "settings" // && destination.route != "onboarding"
                     Log.d("MainActivity", "Navigated to ${destination.route}, showBackButton: ${showBackButton.value}")
                 }
             }

android/app/src/main/java/me/kavishdevar/librepods/screens/AccessibilitySettingsScreen.kt

@@ -84,7 +84,7 @@ import me.kavishdevar.librepods.services.ServiceManager
 import me.kavishdevar.librepods.utils.AACPManager
 import me.kavishdevar.librepods.utils.ATTHandles
 import me.kavishdevar.librepods.utils.Capability
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
+// import me.kavishdevar.librepods.utils.RadareOffsetFinder
 import kotlin.io.encoding.ExperimentalEncodingApi
 
 private var phoneMediaDebounceJob: Job? = null
@@ -99,8 +99,8 @@ fun AccessibilitySettingsScreen(navController: NavController) {
     val isDarkTheme = isSystemInDarkTheme()
     val textColor = if (isDarkTheme) Color.White else Color.Black
     val aacpManager = remember { ServiceManager.getService()?.aacpManager }
-    val isSdpOffsetAvailable =
-        remember { mutableStateOf(RadareOffsetFinder.isSdpOffsetAvailable()) }
+    val isSdpOffsetAvailable = remember { mutableStateOf(true) } // always available rn, for testing without radare
+//         remember { mutableStateOf(RadareOffsetFinder.isSdpOffsetAvailable()) }
 
     val trackColor = if (isDarkTheme) Color(0xFFB3B3B3) else Color(0xFF929491)
     val activeTrackColor = if (isDarkTheme) Color(0xFF007AFF) else Color(0xFF3C6DF5)

android/app/src/main/java/me/kavishdevar/librepods/screens/AirPodsSettingsScreen.kt

@@ -97,7 +97,7 @@ import me.kavishdevar.librepods.services.AirPodsService
 import me.kavishdevar.librepods.ui.theme.LibrePodsTheme
 import me.kavishdevar.librepods.utils.AACPManager
 import me.kavishdevar.librepods.utils.Capability
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
+// import me.kavishdevar.librepods.utils.RadareOffsetFinder
 import kotlin.io.encoding.ExperimentalEncodingApi
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalHazeMaterialsApi::class)
@@ -265,13 +265,13 @@ fun AirPodsSettingsScreen(dev: BluetoothDevice?, service: AirPodsService,
                         independent = true
                     )
                 }
-                val actAsAppleDeviceHookEnabled = RadareOffsetFinder.isSdpOffsetAvailable()
-                if (actAsAppleDeviceHookEnabled) {
+//                 val actAsAppleDeviceHookEnabled = RadareOffsetFinder.isSdpOffsetAvailable()
+//                 if (actAsAppleDeviceHookEnabled) {
                     item(key = "spacer_hearing_health") { Spacer(modifier = Modifier.height(32.dp)) }
                     item(key = "hearing_health") {
                         HearingHealthSettings(navController = navController)
                     }
-                }
+//                 }
 
                 if (capabilities.contains(Capability.LISTENING_MODE)) {
                     item(key = "spacer_noise") { Spacer(modifier = Modifier.height(16.dp)) }

android/app/src/main/java/me/kavishdevar/librepods/screens/AppSettingsScreen.kt

@@ -84,7 +84,7 @@ import me.kavishdevar.librepods.composables.StyledScaffold
 import me.kavishdevar.librepods.composables.StyledSlider
 import me.kavishdevar.librepods.composables.StyledToggle
 import me.kavishdevar.librepods.utils.AACPManager
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
+//import me.kavishdevar.librepods.utils.RadareOffsetFinder
 import kotlin.io.encoding.Base64
 import kotlin.io.encoding.ExperimentalEncodingApi
 import kotlin.math.roundToInt
@@ -185,7 +185,7 @@ fun AppSettingsScreen(navController: NavController) {
     }
 
     val isProcessingSdp = remember { mutableStateOf(false) }
-    val actAsAppleDevice = remember { mutableStateOf(false) }
+//     val actAsAppleDevice = remember { mutableStateOf(false) }
 
     BackHandler(enabled = isProcessingSdp.value) {}
 
@@ -575,12 +575,12 @@ fun AppSettingsScreen(navController: NavController) {
                 description = stringResource(R.string.troubleshooting_description)
             )
 
-            LaunchedEffect(Unit) {
-                actAsAppleDevice.value = RadareOffsetFinder.isSdpOffsetAvailable()
-            }
+//             LaunchedEffect(Unit) {
+//                 actAsAppleDevice.value = RadareOffsetFinder.isSdpOffsetAvailable()
+//             }
             val restartBluetoothText = stringResource(R.string.found_offset_restart_bluetooth)
 
-            StyledToggle(
+            /*StyledToggle(
                 label = stringResource(R.string.act_as_an_apple_device),
                 description = stringResource(R.string.act_as_an_apple_device_description),
                 checkedState = actAsAppleDevice,
@@ -602,7 +602,7 @@ fun AppSettingsScreen(navController: NavController) {
                 },
                 independent = true,
                 enabled = !isProcessingSdp.value
-            )
+            )*/
 
             Spacer(modifier = Modifier.height(16.dp))
 
@@ -650,70 +650,70 @@ fun AppSettingsScreen(navController: NavController) {
 
             Spacer(modifier = Modifier.height(32.dp))
 
-            if (showResetDialog.value) {
-                AlertDialog(
-                    onDismissRequest = { showResetDialog.value = false },
-                    title = {
-                        Text(
-                            "Reset Hook Offset",
-                            fontFamily = FontFamily(Font(R.font.sf_pro)),
-                            fontWeight = FontWeight.Medium
-                        )
-                    },
-                    text = {
-                        Text(
-                            stringResource(R.string.reset_hook_offset_description),
-                            fontFamily = FontFamily(Font(R.font.sf_pro))
-                        )
-                    },
-                    confirmButton = {
-                        val successText = stringResource(R.string.hook_offset_reset_success)
-                        val failureText = stringResource(R.string.hook_offset_reset_failure)
-                        TextButton(
-                            onClick = {
-                                if (RadareOffsetFinder.clearHookOffsets()) {
-                                    Toast.makeText(
-                                        context,
-                                        successText,
-                                        Toast.LENGTH_LONG
-                                    ).show()
-
-                                    navController.navigate("onboarding") {
-                                        popUpTo("settings") { inclusive = true }
-                                    }
-                                } else {
-                                    Toast.makeText(
-                                        context,
-                                        failureText,
-                                        Toast.LENGTH_SHORT
-                                    ).show()
-                                }
-                                showResetDialog.value = false
-                            },
-                            colors = ButtonDefaults.textButtonColors(
-                                contentColor = MaterialTheme.colorScheme.error
-                            )
-                        ) {
-                            Text(
-                                stringResource(R.string.reset),
-                                fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                fontWeight = FontWeight.Medium
-                            )
-                        }
-                    },
-                    dismissButton = {
-                        TextButton(
-                            onClick = { showResetDialog.value = false }
-                        ) {
-                            Text(
-                                "Cancel",
-                                fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                fontWeight = FontWeight.Medium
-                            )
-                        }
-                    }
-                )
-            }
+//             if (showResetDialog.value) {
+//                 AlertDialog(
+//                     onDismissRequest = { showResetDialog.value = false },
+//                     title = {
+//                         Text(
+//                             "Reset Hook Offset",
+//                             fontFamily = FontFamily(Font(R.font.sf_pro)),
+//                             fontWeight = FontWeight.Medium
+//                         )
+//                     },
+//                     text = {
+//                         Text(
+//                             stringResource(R.string.reset_hook_offset_description),
+//                             fontFamily = FontFamily(Font(R.font.sf_pro))
+//                         )
+//                     },
+//                     confirmButton = {
+//                         val successText = stringResource(R.string.hook_offset_reset_success)
+//                         val failureText = stringResource(R.string.hook_offset_reset_failure)
+//                         TextButton(
+//                             onClick = {
+//                                 if (RadareOffsetFinder.clearHookOffsets()) {
+//                                     Toast.makeText(
+//                                         context,
+//                                         successText,
+//                                         Toast.LENGTH_LONG
+//                                     ).show()
+//
+//                                     navController.navigate("onboarding") {
+//                                         popUpTo("settings") { inclusive = true }
+//                                     }
+//                                 } else {
+//                                     Toast.makeText(
+//                                         context,
+//                                         failureText,
+//                                         Toast.LENGTH_SHORT
+//                                     ).show()
+//                                 }
+//                                 showResetDialog.value = false
+//                             },
+//                             colors = ButtonDefaults.textButtonColors(
+//                                 contentColor = MaterialTheme.colorScheme.error
+//                             )
+//                         ) {
+//                             Text(
+//                                 stringResource(R.string.reset),
+//                                 fontFamily = FontFamily(Font(R.font.sf_pro)),
+//                                 fontWeight = FontWeight.Medium
+//                             )
+//                         }
+//                     },
+//                     dismissButton = {
+//                         TextButton(
+//                             onClick = { showResetDialog.value = false }
+//                         ) {
+//                             Text(
+//                                 "Cancel",
+//                                 fontFamily = FontFamily(Font(R.font.sf_pro)),
+//                                 fontWeight = FontWeight.Medium
+//                             )
+//                         }
+//                     }
+//                 )
+//             }
 
             if (showIrkDialog.value) {
                 AlertDialog(

android/app/src/main/java/me/kavishdevar/librepods/screens/Onboarding.kt

@@ -1,643 +0,0 @@
-/*
-    LibrePods - AirPods liberated from Apple’s ecosystem
-    Copyright (C) 2025 LibrePods contributors
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-package me.kavishdevar.librepods.screens
-
-import android.content.Context
-import android.util.Log
-import androidx.compose.animation.AnimatedContent
-import androidx.compose.animation.core.animateFloatAsState
-import androidx.compose.animation.fadeIn
-import androidx.compose.animation.fadeOut
-import androidx.compose.animation.togetherWith
-import androidx.compose.foundation.isSystemInDarkTheme
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Check
-import androidx.compose.material.icons.filled.Clear
-import androidx.compose.material.icons.filled.Settings
-import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.Button
-import androidx.compose.material3.ButtonDefaults
-import androidx.compose.material3.Card
-import androidx.compose.material3.CardDefaults
-import androidx.compose.material3.CircularProgressIndicator
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.Icon
-import androidx.compose.material3.LinearProgressIndicator
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.StrokeCap
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.font.Font
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import androidx.core.content.edit
-import androidx.navigation.NavController
-import com.kyant.backdrop.backdrops.layerBackdrop
-import com.kyant.backdrop.backdrops.rememberLayerBackdrop
-import dev.chrisbanes.haze.materials.ExperimentalHazeMaterialsApi
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import me.kavishdevar.librepods.R
-import me.kavishdevar.librepods.composables.StyledIconButton
-import me.kavishdevar.librepods.composables.StyledScaffold
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
-
-@ExperimentalHazeMaterialsApi
-@OptIn(ExperimentalMaterial3Api::class)
-@Composable
-fun Onboarding(navController: NavController, activityContext: Context) {
-    val isDarkTheme = isSystemInDarkTheme()
-    val backgroundColor = if (isDarkTheme) Color(0xFF1C1C1E) else Color.White
-    val textColor = if (isDarkTheme) Color.White else Color.Black
-    val accentColor = if (isDarkTheme) Color(0xFF007AFF) else Color(0xFF3C6DF5)
-
-    val radareOffsetFinder = remember { RadareOffsetFinder(activityContext) }
-    val progressState by radareOffsetFinder.progressState.collectAsState()
-    var isComplete by remember { mutableStateOf(false) }
-    var hasStarted by remember { mutableStateOf(false) }
-    var rootCheckPassed by remember { mutableStateOf(false) }
-    var checkingRoot by remember { mutableStateOf(false) }
-    var rootCheckFailed by remember { mutableStateOf(false) }
-    var moduleEnabled by remember { mutableStateOf(false) }
-    var bluetoothToggled by remember { mutableStateOf(false) }
-
-    var showSkipDialog by remember { mutableStateOf(false) }
-
-    fun checkRootAccess() {
-        checkingRoot = true
-        rootCheckFailed = false
-        kotlinx.coroutines.MainScope().launch {
-            withContext(Dispatchers.IO) {
-                try {
-                    val process = Runtime.getRuntime().exec("su -c id")
-                    val exitValue = process.waitFor() // no idea why i have this, probably don't need to do this
-                    withContext(Dispatchers.Main) {
-                        rootCheckPassed = (exitValue == 0)
-                        rootCheckFailed = (exitValue != 0)
-                        checkingRoot = false
-                    }
-                } catch (e: Exception) {
-                    Log.e("Onboarding", "Root check failed", e)
-                    withContext(Dispatchers.Main) {
-                        rootCheckPassed = false
-                        rootCheckFailed = true
-                        checkingRoot = false
-                    }
-                }
-            }
-        }
-    }
-
-    LaunchedEffect(hasStarted) {
-        if (hasStarted && rootCheckPassed) {
-            Log.d("Onboarding", "Checking if hook offset is available...")
-            val isHookReady = radareOffsetFinder.isHookOffsetAvailable()
-            Log.d("Onboarding", "Hook offset ready: $isHookReady")
-
-            if (isHookReady) {
-                Log.d("Onboarding", "Hook is ready")
-                isComplete = true
-            } else {
-                Log.d("Onboarding", "Hook not ready, starting setup process...")
-                withContext(Dispatchers.IO) {
-                    radareOffsetFinder.setupAndFindOffset()
-                }
-            }
-        }
-    }
-
-    LaunchedEffect(progressState) {
-        if (progressState is RadareOffsetFinder.ProgressState.Success) {
-            isComplete = true
-        }
-    }
-    val backdrop = rememberLayerBackdrop()
-    StyledScaffold(
-        title = "Setting Up",
-        actionButtons = listOf(
-            {scaffoldBackdrop ->
-                StyledIconButton(
-                    onClick = {
-                        showSkipDialog = true
-                    },
-                    icon = "􀊋",
-                    darkMode = isDarkTheme,
-                    backdrop = scaffoldBackdrop
-                )
-            }
-        )
-    ) { spacerHeight ->
-        Column(
-            modifier = Modifier
-                .fillMaxSize()
-                .layerBackdrop(backdrop)
-                .padding(horizontal = 16.dp),
-            horizontalAlignment = Alignment.CenterHorizontally,
-            verticalArrangement = Arrangement.spacedBy(16.dp)
-        ) {
-            Spacer(modifier = Modifier.height(spacerHeight))
-
-            Card(
-                modifier = Modifier.fillMaxWidth(),
-                colors = CardDefaults.cardColors(containerColor = backgroundColor),
-                shape = RoundedCornerShape(12.dp)
-            ) {
-                Column(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(24.dp),
-                    horizontalAlignment = Alignment.CenterHorizontally
-                ) {
-                    if (!rootCheckPassed && !hasStarted) {
-                        Icon(
-                            imageVector = Icons.Default.Settings,
-                            contentDescription = "Root Access",
-                            tint = accentColor,
-                            modifier = Modifier.size(50.dp)
-                        )
-
-                        Spacer(modifier = Modifier.height(24.dp))
-
-                        Text(
-                            text = stringResource(R.string.root_access_required),
-                            style = TextStyle(
-                                fontSize = 22.sp,
-                                fontWeight = FontWeight.Bold,
-                                textAlign = TextAlign.Center,
-                                fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                color = textColor
-                            )
-                        )
-
-                        Spacer(modifier = Modifier.height(8.dp))
-
-                        Text(
-                            text = stringResource(R.string.this_app_needs_root_access_to_hook_onto_the_bluetooth_library),
-                            style = TextStyle(
-                                fontSize = 16.sp,
-                                fontWeight = FontWeight.Normal,
-                                textAlign = TextAlign.Center,
-                                fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                color = textColor.copy(alpha = 0.7f)
-                            )
-                        )
-
-                        if (rootCheckFailed) {
-                            Spacer(modifier = Modifier.height(8.dp))
-                            Text(
-                                text = stringResource(R.string.root_access_denied),
-                                style = TextStyle(
-                                    fontSize = 14.sp,
-                                    fontWeight = FontWeight.Normal,
-                                    textAlign = TextAlign.Center,
-                                    fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                    color = Color(0xFFFF453A)
-                                )
-                            )
-                        }
-
-                        Spacer(modifier = Modifier.height(24.dp))
-
-                        Button(
-                            onClick = { checkRootAccess() },
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .height(50.dp),
-                            colors = ButtonDefaults.buttonColors(
-                                containerColor = accentColor
-                            ),
-                            shape = RoundedCornerShape(8.dp),
-                            enabled = !checkingRoot
-                        ) {
-                            if (checkingRoot) {
-                                CircularProgressIndicator(
-                                    modifier = Modifier.size(24.dp),
-                                    color = Color.White,
-                                    strokeWidth = 2.dp
-                                )
-                            } else {
-                                Text(
-                                    "Check Root Access",
-                                    style = TextStyle(
-                                        fontSize = 16.sp,
-                                        fontWeight = FontWeight.Medium,
-                                        fontFamily = FontFamily(Font(R.font.sf_pro))
-                                    ),
-                                )
-                            }
-                        }
-                    } else {
-                        StatusIcon(if (hasStarted) progressState else RadareOffsetFinder.ProgressState.Idle, isDarkTheme)
-
-                        Spacer(modifier = Modifier.height(24.dp))
-
-                        AnimatedContent(
-                            targetState = if (hasStarted) getStatusTitle(progressState,
-                                moduleEnabled, bluetoothToggled) else "Setup Required",
-                            transitionSpec = { fadeIn() togetherWith fadeOut() }
-                        ) { text ->
-                            Text(
-                                text = text,
-                                style = TextStyle(
-                                    fontSize = 22.sp,
-                                    fontWeight = FontWeight.Bold,
-                                    textAlign = TextAlign.Center,
-                                    fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                    color = textColor
-                                )
-                            )
-                        }
-
-                        Spacer(modifier = Modifier.height(8.dp))
-
-                        AnimatedContent(
-                            targetState = if (hasStarted)
-                                getStatusDescription(progressState, moduleEnabled, bluetoothToggled)
-                            else
-                                "AirPods functionality requires one-time setup for hooking into Bluetooth library",
-                            transitionSpec = { fadeIn() togetherWith fadeOut() }
-                        ) { text ->
-                            Text(
-                                text = text,
-                                style = TextStyle(
-                                    fontSize = 16.sp,
-                                    fontWeight = FontWeight.Normal,
-                                    textAlign = TextAlign.Center,
-                                    fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                    color = textColor.copy(alpha = 0.7f)
-                                )
-                            )
-                        }
-
-                        Spacer(modifier = Modifier.height(24.dp))
-
-                        if (!hasStarted) {
-                            Button(
-                                onClick = { hasStarted = true },
-                                modifier = Modifier
-                                    .fillMaxWidth()
-                                    .height(50.dp),
-                                colors = ButtonDefaults.buttonColors(
-                                    containerColor = accentColor
-                                ),
-                                shape = RoundedCornerShape(8.dp)
-                            ) {
-                                Text(
-                                    "Start Setup",
-                                    style = TextStyle(
-                                        fontSize = 16.sp,
-                                        fontWeight = FontWeight.Medium,
-                                        fontFamily = FontFamily(Font(R.font.sf_pro))
-                                    ),
-                                )
-                            }
-                        } else {
-                            when (progressState) {
-                                is RadareOffsetFinder.ProgressState.DownloadProgress -> {
-                                    val progress = (progressState as RadareOffsetFinder.ProgressState.DownloadProgress).progress
-                                    val animatedProgress by animateFloatAsState(
-                                        targetValue = progress,
-                                        label = "Download Progress"
-                                    )
-                                    Column(
-                                        modifier = Modifier.fillMaxWidth(),
-                                        horizontalAlignment = Alignment.CenterHorizontally
-                                    ) {
-                                        LinearProgressIndicator(
-                                            progress = { animatedProgress },
-                                            modifier = Modifier
-                                                .fillMaxWidth()
-                                                .height(8.dp),
-                                            strokeCap = StrokeCap.Round,
-                                            color = accentColor
-                                        )
-
-                                        Spacer(modifier = Modifier.height(8.dp))
-
-                                        Text(
-                                            text = "${(progress * 100).toInt()}%",
-                                            style = TextStyle(
-                                                fontSize = 14.sp,
-                                                fontWeight = FontWeight.Medium,
-                                                fontFamily = FontFamily(Font(R.font.sf_pro)),
-                                                color = textColor.copy(alpha = 0.6f)
-                                            )
-                                        )
-                                    }
-                                }
-                                is RadareOffsetFinder.ProgressState.Success -> {
-                                    if (!moduleEnabled) {
-                                        Button(
-                                            onClick = { moduleEnabled = true },
-                                            modifier = Modifier
-                                                .fillMaxWidth()
-                                                .height(50.dp),
-                                            colors = ButtonDefaults.buttonColors(
-                                                containerColor = accentColor
-                                            ),
-                                            shape = RoundedCornerShape(8.dp)
-                                        ) {
-                                            Text(
-                                                "I've Enabled/Reactivated the Module",
-                                                style = TextStyle(
-                                                    fontSize = 16.sp,
-                                                    fontWeight = FontWeight.Medium,
-                                                    fontFamily = FontFamily(Font(R.font.sf_pro))
-                                                ),
-                                            )
-                                        }
-                                    } else if (!bluetoothToggled) {
-                                        Button(
-                                            onClick = { bluetoothToggled = true },
-                                            modifier = Modifier
-                                                .fillMaxWidth()
-                                                .height(50.dp),
-                                            colors = ButtonDefaults.buttonColors(
-                                                containerColor = accentColor
-                                            ),
-                                            shape = RoundedCornerShape(8.dp)
-                                        ) {
-                                            Text(
-                                                "I've Toggled Bluetooth",
-                                                style = TextStyle(
-                                                    fontSize = 16.sp,
-                                                    fontWeight = FontWeight.Medium,
-                                                    fontFamily = FontFamily(Font(R.font.sf_pro))
-                                                ),
-                                            )
-                                        }
-                                    } else {
-                                        Button(
-                                            onClick = {
-                                                navController.navigate("settings") {
-                                                    popUpTo("onboarding") { inclusive = true }
-                                                }
-                                            },
-                                            modifier = Modifier
-                                                .fillMaxWidth()
-                                                .height(50.dp),
-                                            colors = ButtonDefaults.buttonColors(
-                                                containerColor = accentColor
-                                            ),
-                                            shape = RoundedCornerShape(8.dp)
-                                        ) {
-                                            Text(
-                                                "Continue to Settings",
-                                                style = TextStyle(
-                                                    fontSize = 16.sp,
-                                                    fontWeight = FontWeight.Medium,
-                                                    fontFamily = FontFamily(Font(R.font.sf_pro))
-                                                ),
-                                            )
-                                        }
-                                    }
-                                }
-                                is RadareOffsetFinder.ProgressState.Idle,
-                                is RadareOffsetFinder.ProgressState.Error -> {
-                                    // No specific UI for these states
-                                }
-                                else -> {
-                                    LinearProgressIndicator(
-                                        modifier = Modifier
-                                            .fillMaxWidth()
-                                            .height(8.dp),
-                                        strokeCap = StrokeCap.Round,
-                                        color = accentColor
-                                    )
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-
-            Spacer(modifier = Modifier.weight(1f))
-
-            if (progressState is RadareOffsetFinder.ProgressState.Error && !isComplete && hasStarted) {
-                Button(
-                    onClick = {
-                        Log.d("Onboarding", "Trying to find offset again...")
-                        kotlinx.coroutines.MainScope().launch {
-                            withContext(Dispatchers.IO) {
-                                radareOffsetFinder.setupAndFindOffset()
-                            }
-                        }
-                    },
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .height(55.dp),
-                    colors = ButtonDefaults.buttonColors(
-                        containerColor = accentColor
-                    ),
-                    shape = RoundedCornerShape(8.dp)
-                ) {
-                    Text(
-                        "Try Again",
-                        style = TextStyle(
-                            fontSize = 16.sp,
-                            fontWeight = FontWeight.Medium,
-                            fontFamily = FontFamily(Font(R.font.sf_pro))
-                        ),
-                    )
-                }
-            }
-        }
-
-        if (showSkipDialog) {
-            AlertDialog(
-                onDismissRequest = { showSkipDialog = false },
-                title = { Text("Skip Setup") },
-                text = {
-                    Text(
-                        "Have you installed the root module that patches the Bluetooth library directly? This option is for users who have manually patched their system instead of using the dynamic hook.",
-                        style = TextStyle(
-                            fontSize = 16.sp,
-                            fontFamily = FontFamily(Font(R.font.sf_pro))
-                        )
-                    )
-                },
-                confirmButton = {
-                    val sharedPreferences = activityContext.getSharedPreferences("settings", Context.MODE_PRIVATE)
-                    TextButton(
-                        onClick = {
-                            showSkipDialog = false
-                            RadareOffsetFinder.clearHookOffsets()
-                            sharedPreferences.edit { putBoolean("skip_setup", true) }
-                            navController.navigate("settings") {
-                                popUpTo("onboarding") { inclusive = true }
-                            }
-                        }
-                    ) {
-                        Text(
-                            "Yes, Skip Setup",
-                            color = accentColor,
-                            fontWeight = FontWeight.Bold
-                        )
-                    }
-                },
-                dismissButton = {
-                    TextButton(
-                        onClick = { showSkipDialog = false }
-                    ) {
-                        Text("Cancel")
-                    }
-                },
-                containerColor = backgroundColor,
-                textContentColor = textColor,
-                titleContentColor = textColor
-            )
-        }
-    }
-}
-
-@Composable
-private fun StatusIcon(
-    progressState: RadareOffsetFinder.ProgressState,
-    isDarkTheme: Boolean
-) {
-    val accentColor = if (isDarkTheme) Color(0xFF007AFF) else Color(0xFF3C6DF5)
-    val errorColor = if (isDarkTheme) Color(0xFFFF453A) else Color(0xFFFF3B30)
-    val successColor = if (isDarkTheme) Color(0xFF30D158) else Color(0xFF34C759)
-
-    Box(
-        modifier = Modifier.size(80.dp),
-        contentAlignment = Alignment.Center
-    ) {
-        when (progressState) {
-            is RadareOffsetFinder.ProgressState.Error -> {
-                Icon(
-                    imageVector = Icons.Default.Clear,
-                    contentDescription = "Error",
-                    tint = errorColor,
-                    modifier = Modifier.size(50.dp)
-                )
-            }
-            is RadareOffsetFinder.ProgressState.Success -> {
-                Icon(
-                    imageVector = Icons.Default.Check,
-                    contentDescription = "Success",
-                    tint = successColor,
-                    modifier = Modifier.size(50.dp)
-                )
-            }
-            is RadareOffsetFinder.ProgressState.Idle -> {
-                Icon(
-                    imageVector = Icons.Default.Settings,
-                    contentDescription = "Settings",
-                    tint = accentColor,
-                    modifier = Modifier.size(50.dp)
-                )
-            }
-            else -> {
-                CircularProgressIndicator(
-                    modifier = Modifier.size(50.dp),
-                    color = accentColor,
-                    strokeWidth = 4.dp
-                )
-            }
-        }
-    }
-}
-
-private fun getStatusTitle(
-    state: RadareOffsetFinder.ProgressState,
-    moduleEnabled: Boolean,
-    bluetoothToggled: Boolean
-): String {
-    return when (state) {
-        is RadareOffsetFinder.ProgressState.Success -> {
-            when {
-                !moduleEnabled -> "Enable Xposed Module"
-                !bluetoothToggled -> "Toggle Bluetooth"
-                else -> "Setup Complete"
-            }
-        }
-        is RadareOffsetFinder.ProgressState.Idle -> "Getting Ready"
-        is RadareOffsetFinder.ProgressState.CheckingExisting -> "Checking if radare2 already downloaded"
-        is RadareOffsetFinder.ProgressState.Downloading -> "Downloading radare2"
-        is RadareOffsetFinder.ProgressState.DownloadProgress -> "Downloading radare2"
-        is RadareOffsetFinder.ProgressState.Extracting -> "Extracting radare2"
-        is RadareOffsetFinder.ProgressState.MakingExecutable -> "Setting executable permissions"
-        is RadareOffsetFinder.ProgressState.FindingOffset -> "Finding function offset"
-        is RadareOffsetFinder.ProgressState.SavingOffset -> "Saving offset"
-        is RadareOffsetFinder.ProgressState.Cleaning -> "Cleaning Up"
-        is RadareOffsetFinder.ProgressState.Error -> "Setup Failed"
-    }
-}
-
-private fun getStatusDescription(
-    state: RadareOffsetFinder.ProgressState,
-    moduleEnabled: Boolean,
-    bluetoothToggled: Boolean
-): String {
-    return when (state) {
-        is RadareOffsetFinder.ProgressState.Success -> {
-            when {
-                !moduleEnabled -> "Please enable the LibrePods Xposed module in your Xposed manager (e.g. LSPosed). If already enabled, disable and re-enable it."
-                !bluetoothToggled -> "Please turn off and then turn on Bluetooth to apply the changes."
-                else -> "All set! You can now use your AirPods with enhanced functionality."
-            }
-        }
-        is RadareOffsetFinder.ProgressState.Idle -> "Preparing"
-        is RadareOffsetFinder.ProgressState.CheckingExisting -> "Checking if radare2 are already installed"
-        is RadareOffsetFinder.ProgressState.Downloading -> "Starting radare2 download"
-        is RadareOffsetFinder.ProgressState.DownloadProgress -> "Downloading radare2"
-        is RadareOffsetFinder.ProgressState.Extracting -> "Extracting radare2"
-        is RadareOffsetFinder.ProgressState.MakingExecutable -> "Setting executable permissions on radare2 binaries"
-        is RadareOffsetFinder.ProgressState.FindingOffset -> "Looking for the required Bluetooth function in system libraries"
-        is RadareOffsetFinder.ProgressState.SavingOffset -> "Saving the function offset"
-        is RadareOffsetFinder.ProgressState.Cleaning -> "Removing temporary extracted files"
-        is RadareOffsetFinder.ProgressState.Error -> state.message
-    }
-}
-
-@ExperimentalHazeMaterialsApi
-@Preview
-@Composable
-fun OnboardingPreview() {
-    Onboarding(navController = NavController(LocalContext.current), activityContext = LocalContext.current)
-}
-

android/app/src/main/java/me/kavishdevar/librepods/screens/TransparencySettingsScreen.kt

@@ -71,7 +71,7 @@ import me.kavishdevar.librepods.composables.StyledSlider
 import me.kavishdevar.librepods.composables.StyledToggle
 import me.kavishdevar.librepods.services.ServiceManager
 import me.kavishdevar.librepods.utils.ATTHandles
-import me.kavishdevar.librepods.utils.RadareOffsetFinder
+// import me.kavishdevar.librepods.utils.RadareOffsetFinder
 import me.kavishdevar.librepods.utils.TransparencySettings
 import me.kavishdevar.librepods.utils.parseTransparencySettingsResponse
 import me.kavishdevar.librepods.utils.sendTransparencySettings
@@ -90,8 +90,8 @@ fun TransparencySettingsScreen(navController: NavController) {
     val verticalScrollState = rememberScrollState()
     val attManager = ServiceManager.getService()?.attManager ?: return
     val aacpManager = remember { ServiceManager.getService()?.aacpManager }
-    val isSdpOffsetAvailable =
-        remember { mutableStateOf(RadareOffsetFinder.isSdpOffsetAvailable()) }
+    val isSdpOffsetAvailable = remember { mutableStateOf(true) } // always available rn, for testing without radare
+//         remember { mutableStateOf(RadareOffsetFinder.isSdpOffsetAvailable()) }
 
     val trackColor = if (isDarkTheme) Color(0xFFB3B3B3) else Color(0xFF929491)
     val activeTrackColor = if (isDarkTheme) Color(0xFF007AFF) else Color(0xFF3C6DF5)

android/app/src/main/java/me/kavishdevar/librepods/utils/RadareOffsetFinder.kt

@@ -1,761 +0,0 @@
-/*
-    LibrePods - AirPods liberated from Apple’s ecosystem
-    Copyright (C) 2025 LibrePods contributors
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-@file:OptIn(ExperimentalEncodingApi::class)
-
-package me.kavishdevar.librepods.utils
-
-import android.content.Context
-import android.util.Log
-import androidx.compose.runtime.NoLiveLiterals
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.withContext
-import me.kavishdevar.librepods.services.ServiceManager
-import java.io.BufferedReader
-import java.io.File
-import java.io.FileOutputStream
-import java.io.InputStreamReader
-import java.net.HttpURLConnection
-import java.net.URL
-import kotlin.io.encoding.ExperimentalEncodingApi
-
-@NoLiveLiterals
-class RadareOffsetFinder(context: Context) {
-    companion object {
-        private const val TAG = "RadareOffsetFinder"
-        private const val RADARE2_URL = "https://hc-cdn.hel1.your-objectstorage.com/s/v3/c9898243c42c0d3d1387de9a37d57ce9df77f9c9_radare2-5.9.9-android-aarch64.tar.gz"
-        private const val HOOK_OFFSET_PROP = "persist.librepods.hook_offset"
-        private const val CFG_REQ_OFFSET_PROP = "persist.librepods.cfg_req_offset"
-        private const val CSM_CONFIG_OFFSET_PROP = "persist.librepods.csm_config_offset"
-        private const val PEER_INFO_REQ_OFFSET_PROP = "persist.librepods.peer_info_req_offset"
-        private const val SDP_OFFSET_PROP = "persist.librepods.sdp_offset"
-        private const val EXTRACT_DIR = "/"
-
-        private const val RADARE2_BIN_PATH = "$EXTRACT_DIR/data/local/tmp/aln_unzip/org.radare.radare2installer/radare2/bin"
-        private const val RADARE2_LIB_PATH = "$EXTRACT_DIR/data/local/tmp/aln_unzip/org.radare.radare2installer/radare2/lib"
-        private const val BUSYBOX_PATH = "$EXTRACT_DIR/data/local/tmp/aln_unzip/busybox"
-
-        private val LIBRARY_PATHS = listOf(
-            "/apex/com.android.bt/lib64/libbluetooth_jni.so",
-            "/apex/com.android.btservices/lib64/libbluetooth_jni.so",
-            "/system/lib64/libbluetooth_jni.so",
-            "/system/lib64/libbluetooth_qti.so",
-            "/system_ext/lib64/libbluetooth_qti.so"
-        )
-
-        fun findBluetoothLibraryPath(): String? {
-            for (path in LIBRARY_PATHS) {
-                if (File(path).exists()) {
-                    Log.d(TAG, "Found Bluetooth library at $path")
-                    return path
-                }
-            }
-            Log.e(TAG, "Could not find Bluetooth library")
-            return null
-        }
-
-        fun clearHookOffsets(): Boolean {
-            try {
-                val process = Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c",
-                    "/system/bin/setprop $HOOK_OFFSET_PROP '' && " +
-                    "/system/bin/setprop $CFG_REQ_OFFSET_PROP '' && " +
-                    "/system/bin/setprop $CSM_CONFIG_OFFSET_PROP '' && " +
-                    "/system/bin/setprop $PEER_INFO_REQ_OFFSET_PROP '' &&" +
-                    "/system/bin/setprop $SDP_OFFSET_PROP ''"
-                ))
-                val exitCode = process.waitFor()
-
-                if (exitCode == 0) {
-                    Log.d(TAG, "Successfully cleared hook offset properties")
-                    return true
-                } else {
-                    Log.e(TAG, "Failed to clear hook offset properties, exit code: $exitCode")
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "Error clearing hook offset properties", e)
-            }
-            return false
-        }
-
-        fun clearSdpOffset(): Boolean {
-            try {
-                val process = Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c", "/system/bin/setprop $SDP_OFFSET_PROP ''"
-                ))
-                val exitCode = process.waitFor()
-
-                if (exitCode == 0) {
-                    Log.d(TAG, "Successfully cleared SDP offset property")
-                    return true
-                } else {
-                    Log.e(TAG, "Failed to clear SDP offset property, exit code: $exitCode")
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "Error clearing SDP offset property", e)
-            }
-            return false
-        }
-
-        fun isSdpOffsetAvailable(): Boolean {
-            val sharedPreferences = ServiceManager.getService()?.applicationContext?.getSharedPreferences("settings", Context.MODE_PRIVATE) // ik not good practice- too lazy
-            if (sharedPreferences?.getBoolean("skip_setup", false) == true) {
-                Log.d(TAG, "Setup skipped, returning true for SDP offset.")
-                return true
-            }
-            try {
-                val process = Runtime.getRuntime().exec(arrayOf("/system/bin/getprop", SDP_OFFSET_PROP))
-                val reader = BufferedReader(InputStreamReader(process.inputStream))
-                val propValue = reader.readLine()
-                process.waitFor()
-
-                if (propValue != null && propValue.isNotEmpty()) {
-                    Log.d(TAG, "SDP offset property exists: $propValue")
-                    return true
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "Error checking if SDP offset property exists", e)
-            }
-
-            Log.d(TAG, "No SDP offset available")
-            return false
-        }
-    }
-
-    private val radare2TarballFile = File(context.cacheDir, "radare2.tar.gz")
-
-    private val _progressState = MutableStateFlow<ProgressState>(ProgressState.Idle)
-    val progressState: StateFlow<ProgressState> = _progressState
-
-    sealed class ProgressState {
-        object Idle : ProgressState()
-        object CheckingExisting : ProgressState()
-        object Downloading : ProgressState()
-        data class DownloadProgress(val progress: Float) : ProgressState()
-        object Extracting : ProgressState()
-        object MakingExecutable : ProgressState()
-        object FindingOffset : ProgressState()
-        object SavingOffset : ProgressState()
-        object Cleaning : ProgressState()
-        data class Error(val message: String) : ProgressState()
-        data class Success(val offset: Long) : ProgressState()
-    }
-
-
-    fun isHookOffsetAvailable(): Boolean {
-        Log.d(TAG, "Setup Skipped? " + ServiceManager.getService()?.applicationContext?.getSharedPreferences("settings", Context.MODE_PRIVATE)?.getBoolean("skip_setup", false).toString())
-        if (ServiceManager.getService()?.applicationContext?.getSharedPreferences("settings", Context.MODE_PRIVATE)?.getBoolean("skip_setup", false) == true) {
-            Log.d(TAG, "Setup skipped, returning true.")
-            return true
-        }
-        _progressState.value = ProgressState.CheckingExisting
-        try {
-            val process = Runtime.getRuntime().exec(arrayOf("/system/bin/getprop", HOOK_OFFSET_PROP))
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val propValue = reader.readLine()
-            process.waitFor()
-
-            if (propValue != null && propValue.isNotEmpty()) {
-                Log.d(TAG, "Hook offset property exists: $propValue")
-                _progressState.value = ProgressState.Idle
-                return true
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Error checking if offset property exists", e)
-            _progressState.value = ProgressState.Error("Failed to check if offset property exists: ${e.message}")
-        }
-
-        Log.d(TAG, "No hook offset available")
-        _progressState.value = ProgressState.Idle
-        return false
-    }
-
-    suspend fun setupAndFindOffset(): Boolean {
-        val offset = findOffset()
-        return offset > 0
-    }
-
-    suspend fun findOffset(): Long = withContext(Dispatchers.IO) {
-        try {
-            _progressState.value = ProgressState.Downloading
-            if (!downloadRadare2TarballIfNeeded()) {
-                _progressState.value = ProgressState.Error("Failed to download radare2 tarball")
-                Log.e(TAG, "Failed to download radare2 tarball")
-                return@withContext 0L
-            }
-
-            _progressState.value = ProgressState.Extracting
-            if (!extractRadare2Tarball()) {
-                _progressState.value = ProgressState.Error("Failed to extract radare2 tarball")
-                Log.e(TAG, "Failed to extract radare2 tarball")
-                return@withContext 0L
-            }
-
-            _progressState.value = ProgressState.MakingExecutable
-            if (!makeExecutable()) {
-                _progressState.value = ProgressState.Error("Failed to make binaries executable")
-                Log.e(TAG, "Failed to make binaries executable")
-                return@withContext 0L
-            }
-
-            _progressState.value = ProgressState.FindingOffset
-            val offset = findFunctionOffset()
-            if (offset == 0L) {
-                _progressState.value = ProgressState.Error("Failed to find function offset")
-                Log.e(TAG, "Failed to find function offset")
-                return@withContext 0L
-            }
-
-            _progressState.value = ProgressState.SavingOffset
-            if (!saveOffset(offset)) {
-                _progressState.value = ProgressState.Error("Failed to save offset")
-                Log.e(TAG, "Failed to save offset")
-                return@withContext 0L
-            }
-
-            _progressState.value = ProgressState.Cleaning
-            cleanupExtractedFiles()
-
-            _progressState.value = ProgressState.Success(offset)
-            return@withContext offset
-
-        } catch (e: Exception) {
-            _progressState.value = ProgressState.Error("Error: ${e.message}")
-            Log.e(TAG, "Error in findOffset", e)
-            return@withContext 0L
-        }
-    }
-
-    private suspend fun downloadRadare2TarballIfNeeded(): Boolean = withContext(Dispatchers.IO) {
-        if (radare2TarballFile.exists() && radare2TarballFile.length() > 0) {
-            Log.d(TAG, "Radare2 tarball already downloaded to ${radare2TarballFile.absolutePath}")
-            return@withContext true
-        }
-
-        try {
-            val url = URL(RADARE2_URL)
-            val connection = url.openConnection() as HttpURLConnection
-            connection.connectTimeout = 60000
-            connection.readTimeout = 60000
-
-            val contentLength = connection.contentLength.toFloat()
-            val inputStream = connection.inputStream
-            val outputStream = FileOutputStream(radare2TarballFile)
-
-            val buffer = ByteArray(4096)
-            var bytesRead: Int
-            var totalBytesRead = 0L
-
-            while (inputStream.read(buffer).also { bytesRead = it } != -1) {
-                outputStream.write(buffer, 0, bytesRead)
-                totalBytesRead += bytesRead
-                if (contentLength > 0) {
-                    val progress = totalBytesRead.toFloat() / contentLength
-                    _progressState.value = ProgressState.DownloadProgress(progress)
-                }
-            }
-
-            outputStream.close()
-            inputStream.close()
-
-            Log.d(TAG, "Download successful to ${radare2TarballFile.absolutePath}")
-            return@withContext true
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to download radare2 tarball", e)
-            return@withContext false
-        }
-    }
-
-    private suspend fun extractRadare2Tarball(): Boolean = withContext(Dispatchers.IO) {
-        try {
-            val isAlreadyExtracted = checkIfAlreadyExtracted()
-
-            if (isAlreadyExtracted) {
-                Log.d(TAG, "Radare2 files already extracted correctly, skipping extraction")
-                return@withContext true
-            }
-
-            Log.d(TAG, "Removing existing extract directory")
-            Runtime.getRuntime().exec(arrayOf("su", "-c", "rm -rf $EXTRACT_DIR/data/local/tmp/aln_unzip")).waitFor()
-
-            Runtime.getRuntime().exec(arrayOf("su", "-c", "mkdir -p $EXTRACT_DIR/data/local/tmp/aln_unzip")).waitFor()
-
-            Log.d(TAG, "Extracting ${radare2TarballFile.absolutePath} to $EXTRACT_DIR")
-
-            val process = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "tar xvf ${radare2TarballFile.absolutePath} -C $EXTRACT_DIR")
-            )
-
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "Extract output: $line")
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.e(TAG, "Extract error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode == 0) {
-                Log.d(TAG, "Extraction completed successfully")
-                return@withContext true
-            } else {
-                Log.e(TAG, "Extraction failed with exit code $exitCode")
-                return@withContext false
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to extract radare2", e)
-            return@withContext false
-        }
-    }
-
-    private suspend fun checkIfAlreadyExtracted(): Boolean = withContext(Dispatchers.IO) {
-        try {
-            val checkDirProcess = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "[ -d $EXTRACT_DIR/data/local/tmp/aln_unzip ] && echo 'exists'")
-            )
-            val dirExists = BufferedReader(InputStreamReader(checkDirProcess.inputStream)).readLine() == "exists"
-            checkDirProcess.waitFor()
-
-            if (!dirExists) {
-                Log.d(TAG, "Extract directory doesn't exist, need to extract")
-                return@withContext false
-            }
-
-            val tarProcess = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "tar tf ${radare2TarballFile.absolutePath}")
-            )
-            val tarFiles = BufferedReader(InputStreamReader(tarProcess.inputStream)).readLines()
-                .filter { it.isNotEmpty() }
-                .map { it.trim() }
-                .toSet()
-            tarProcess.waitFor()
-
-            if (tarFiles.isEmpty()) {
-                Log.e(TAG, "Failed to get file list from tarball")
-                return@withContext false
-            }
-
-            val findProcess = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "find $EXTRACT_DIR/data/local/tmp/aln_unzip -type f | sort")
-            )
-            val extractedFiles = BufferedReader(InputStreamReader(findProcess.inputStream)).readLines()
-                .filter { it.isNotEmpty() }
-                .map { it.trim() }
-                .toSet()
-            findProcess.waitFor()
-
-            if (extractedFiles.isEmpty()) {
-                Log.d(TAG, "No files found in extract directory, need to extract")
-                return@withContext false
-            }
-
-            for (tarFile in tarFiles) {
-                if (tarFile.endsWith("/")) continue
-
-                val filePathInExtractDir = "$EXTRACT_DIR/$tarFile"
-                val fileCheckProcess = Runtime.getRuntime().exec(
-                    arrayOf("su", "-c", "[ -f $filePathInExtractDir ] && echo 'exists'")
-                )
-                val fileExists = BufferedReader(InputStreamReader(fileCheckProcess.inputStream)).readLine() == "exists"
-                fileCheckProcess.waitFor()
-
-                if (!fileExists) {
-                    Log.d(TAG, "File $filePathInExtractDir from tarball missing in extract directory")
-                    Runtime.getRuntime().exec(arrayOf("su", "-c", "rm -rf $EXTRACT_DIR/data/local/tmp/aln_unzip")).waitFor()
-                    return@withContext false
-                }
-            }
-
-            Log.d(TAG, "All ${tarFiles.size} files from tarball exist in extract directory")
-            return@withContext true
-        } catch (e: Exception) {
-            Log.e(TAG, "Error checking extraction status", e)
-            return@withContext false
-        }
-    }
-
-    private suspend fun makeExecutable(): Boolean = withContext(Dispatchers.IO) {
-        try {
-            Log.d(TAG, "Making binaries executable in $RADARE2_BIN_PATH")
-            val chmod1Result = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "chmod -R 755 $RADARE2_BIN_PATH")
-            ).waitFor()
-
-            Log.d(TAG, "Making binaries executable in $BUSYBOX_PATH")
-
-            val chmod2Result = Runtime.getRuntime().exec(
-                arrayOf("su", "-c", "chmod -R 755 $BUSYBOX_PATH")
-            ).waitFor()
-
-            if (chmod1Result == 0 && chmod2Result == 0) {
-                Log.d(TAG, "Successfully made binaries executable")
-                return@withContext true
-            } else {
-                Log.e(TAG, "Failed to make binaries executable, exit codes: $chmod1Result, $chmod2Result")
-                return@withContext false
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Error making binaries executable", e)
-            return@withContext false
-        }
-    }
-
-    private suspend fun findFunctionOffset(): Long = withContext(Dispatchers.IO) {
-        val libraryPath = findBluetoothLibraryPath() ?: return@withContext 0L
-        var offset = 0L
-
-        try {
-            @Suppress("LocalVariableName") val currentLD_LIBRARY_PATH = ProcessBuilder().command("su", "-c", "printenv LD_LIBRARY_PATH").start().inputStream.bufferedReader().readText().trim()
-            val currentPATH = ProcessBuilder().command("su", "-c", "printenv PATH").start().inputStream.bufferedReader().readText().trim()
-            val envSetup = """
-                export LD_LIBRARY_PATH="$RADARE2_LIB_PATH:$currentLD_LIBRARY_PATH"
-                export PATH="$BUSYBOX_PATH:$RADARE2_BIN_PATH:$currentPATH"
-            """.trimIndent()
-
-            val command = "$envSetup && $RADARE2_BIN_PATH/rabin2 -q -E $libraryPath | grep fcr_chk_chan"
-            Log.d(TAG, "Running command: $command")
-
-            val process = Runtime.getRuntime().exec(arrayOf("su", "-c", command))
-
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 output: $line")
-                if (line?.contains("fcr_chk_chan") == true) {
-                    val parts = line.split(" ")
-                    if (parts.isNotEmpty() && parts[0].startsWith("0x")) {
-                        offset = parts[0].substring(2).toLong(16)
-                        Log.d(TAG, "Found offset at ${parts[0]}")
-                        break
-                    }
-                }
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode != 0) {
-                Log.e(TAG, "rabin2 command failed with exit code $exitCode")
-            }
-
-//            findAndSaveL2cuProcessCfgReqOffset(libraryPath, envSetup)
-//            findAndSaveL2cCsmConfigOffset(libraryPath, envSetup)
-//            findAndSaveL2cuSendPeerInfoReqOffset(libraryPath, envSetup)
-
-            // findAndSaveSdpOffset(libraryPath, envSetup) Should not be run by default, only when user asks for it.
-
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to find function offset", e)
-            return@withContext 0L
-        }
-
-        if (offset == 0L) {
-            Log.e(TAG, "Failed to extract function offset from output, aborting")
-            return@withContext 0L
-        }
-
-        Log.d(TAG, "Successfully found offset: 0x${offset.toString(16)}")
-        return@withContext offset
-    }
-
-    private suspend fun findAndSaveL2cuProcessCfgReqOffset(libraryPath: String, envSetup: String) = withContext(Dispatchers.IO) {
-        try {
-            val command = "$envSetup && $RADARE2_BIN_PATH/rabin2 -q -E $libraryPath | grep l2cu_process_our_cfg_req"
-            Log.d(TAG, "Running command: $command")
-
-            val process = Runtime.getRuntime().exec(arrayOf("su", "-c", command))
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-            var offset = 0L
-
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 output: $line")
-                if (line?.contains("l2cu_process_our_cfg_req") == true) {
-                    val parts = line.split(" ")
-                    if (parts.isNotEmpty() && parts[0].startsWith("0x")) {
-                        offset = parts[0].substring(2).toLong(16)
-                        Log.d(TAG, "Found l2cu_process_our_cfg_req offset at ${parts[0]}")
-                        break
-                    }
-                }
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode != 0) {
-                Log.e(TAG, "rabin2 command failed with exit code $exitCode")
-            }
-
-            if (offset > 0L) {
-                val hexString = "0x${offset.toString(16)}"
-                Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c", "/system/bin/setprop $CFG_REQ_OFFSET_PROP $hexString"
-                )).waitFor()
-                Log.d(TAG, "Saved l2cu_process_our_cfg_req offset: $hexString")
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to find or save l2cu_process_our_cfg_req offset", e)
-        }
-    }
-
-    private suspend fun findAndSaveL2cCsmConfigOffset(libraryPath: String, envSetup: String) = withContext(Dispatchers.IO) {
-        try {
-            val command = "$envSetup && $RADARE2_BIN_PATH/rabin2 -q -E $libraryPath | grep l2c_csm_config"
-            Log.d(TAG, "Running command: $command")
-
-            val process = Runtime.getRuntime().exec(arrayOf("su", "-c", command))
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-            var offset = 0L
-
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 output: $line")
-                if (line?.contains("l2c_csm_config") == true) {
-                    val parts = line.split(" ")
-                    if (parts.isNotEmpty() && parts[0].startsWith("0x")) {
-                        offset = parts[0].substring(2).toLong(16)
-                        Log.d(TAG, "Found l2c_csm_config offset at ${parts[0]}")
-                        break
-                    }
-                }
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode != 0) {
-                Log.e(TAG, "rabin2 command failed with exit code $exitCode")
-            }
-
-            if (offset > 0L) {
-                val hexString = "0x${offset.toString(16)}"
-                Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c", "/system/bin/setprop $CSM_CONFIG_OFFSET_PROP $hexString"
-                )).waitFor()
-                Log.d(TAG, "Saved l2c_csm_config offset: $hexString")
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to find or save l2c_csm_config offset", e)
-        }
-    }
-
-    private suspend fun findAndSaveL2cuSendPeerInfoReqOffset(libraryPath: String, envSetup: String) = withContext(Dispatchers.IO) {
-        try {
-            val command = "$envSetup && $RADARE2_BIN_PATH/rabin2 -q -E $libraryPath | grep l2cu_send_peer_info_req"
-            Log.d(TAG, "Running command: $command")
-
-            val process = Runtime.getRuntime().exec(arrayOf("su", "-c", command))
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-            var offset = 0L
-
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 output: $line")
-                if (line?.contains("l2cu_send_peer_info_req") == true) {
-                    val parts = line.split(" ")
-                    if (parts.isNotEmpty() && parts[0].startsWith("0x")) {
-                        offset = parts[0].substring(2).toLong(16)
-                        Log.d(TAG, "Found l2cu_send_peer_info_req offset at ${parts[0]}")
-                        break
-                    }
-                }
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode != 0) {
-                Log.e(TAG, "rabin2 command failed with exit code $exitCode")
-            }
-
-            if (offset > 0L) {
-                val hexString = "0x${offset.toString(16)}"
-                Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c", "/system/bin/setprop $PEER_INFO_REQ_OFFSET_PROP $hexString"
-                )).waitFor()
-                Log.d(TAG, "Saved l2cu_send_peer_info_req offset: $hexString")
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to find or save l2cu_send_peer_info_req offset", e)
-        }
-    }
-
-    private suspend fun findAndSaveSdpOffset(libraryPath: String, envSetup: String) = withContext(Dispatchers.IO) {
-        try {
-            val command = "$envSetup && $RADARE2_BIN_PATH/rabin2 -q -E $libraryPath | grep DmSetLocalDiRecord"
-            Log.d(TAG, "Running command: $command")
-
-            val process = Runtime.getRuntime().exec(arrayOf("su", "-c", command))
-            val reader = BufferedReader(InputStreamReader(process.inputStream))
-            val errorReader = BufferedReader(InputStreamReader(process.errorStream))
-
-            var line: String?
-            var offset = 0L
-
-            while (reader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 output: $line")
-                if (line?.contains("DmSetLocalDiRecord") == true) {
-                    val parts = line.split(" ")
-                    if (parts.isNotEmpty() && parts[0].startsWith("0x")) {
-                        offset = parts[0].substring(2).toLong(16)
-                        Log.d(TAG, "Found DmSetLocalDiRecord offset at ${parts[0]}")
-                        break
-                    }
-                }
-            }
-
-            while (errorReader.readLine().also { line = it } != null) {
-                Log.d(TAG, "rabin2 error: $line")
-            }
-
-            val exitCode = process.waitFor()
-            if (exitCode != 0) {
-                Log.e(TAG, "rabin2 command failed with exit code $exitCode")
-            }
-
-            if (offset > 0L) {
-                val hexString = "0x${offset.toString(16)}"
-                Runtime.getRuntime().exec(arrayOf(
-                    "su", "-c", "/system/bin/setprop $SDP_OFFSET_PROP $hexString"
-                )).waitFor()
-                Log.d(TAG, "Saved DmSetLocalDiRecord offset: $hexString")
-            }
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to find or save DmSetLocalDiRecord offset", e)
-        }
-    }
-
-    private suspend fun saveOffset(offset: Long): Boolean = withContext(Dispatchers.IO) {
-        try {
-            val hexString = "0x${offset.toString(16)}"
-            Log.d(TAG, "Saving offset to system property: $hexString")
-
-            val process = Runtime.getRuntime().exec(arrayOf(
-                "su", "-c", "/system/bin/setprop $HOOK_OFFSET_PROP $hexString"
-            ))
-
-            val exitCode = process.waitFor()
-            if (exitCode == 0) {
-                val verifyProcess = Runtime.getRuntime().exec(arrayOf(
-                    "/system/bin/getprop", HOOK_OFFSET_PROP
-                ))
-                val propValue = BufferedReader(InputStreamReader(verifyProcess.inputStream)).readLine()
-                verifyProcess.waitFor()
-
-                if (propValue != null && propValue.isNotEmpty()) {
-                    Log.d(TAG, "Successfully saved offset to system property: $propValue")
-                    return@withContext true
-                } else {
-                    Log.e(TAG, "Property was set but couldn't be verified")
-                }
-            } else {
-                Log.e(TAG, "Failed to set property, exit code: $exitCode")
-            }
-            return@withContext false
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to save offset", e)
-            return@withContext false
-        }
-    }
-
-    private fun cleanupExtractedFiles() {
-        try {
-            Runtime.getRuntime().exec(arrayOf("su", "-c", "rm -rf $EXTRACT_DIR/data/local/tmp/aln_unzip")).waitFor()
-            Log.d(TAG, "Cleaned up extracted files at $EXTRACT_DIR/data/local/tmp/aln_unzip")
-        } catch (e: Exception) {
-            Log.e(TAG, "Failed to cleanup extracted files", e)
-        }
-    }
-
-    suspend fun findSdpOffset(): Boolean = withContext(Dispatchers.IO) {
-        try {
-            _progressState.value = ProgressState.Downloading
-            if (!downloadRadare2TarballIfNeeded()) {
-                _progressState.value = ProgressState.Error("Failed to download radare2 tarball")
-                Log.e(TAG, "Failed to download radare2 tarball")
-                return@withContext false
-            }
-
-            _progressState.value = ProgressState.Extracting
-            if (!extractRadare2Tarball()) {
-                _progressState.value = ProgressState.Error("Failed to extract radare2 tarball")
-                Log.e(TAG, "Failed to extract radare2 tarball")
-                return@withContext false
-            }
-
-            _progressState.value = ProgressState.MakingExecutable
-            if (!makeExecutable()) {
-                _progressState.value = ProgressState.Error("Failed to make binaries executable")
-                Log.e(TAG, "Failed to make binaries executable")
-                return@withContext false
-            }
-
-            _progressState.value = ProgressState.FindingOffset
-            val libraryPath = findBluetoothLibraryPath()
-            if (libraryPath == null) {
-                _progressState.value = ProgressState.Error("Failed to find Bluetooth library")
-                Log.e(TAG, "Failed to find Bluetooth library")
-                return@withContext false
-            }
-
-            @Suppress("LocalVariableName") val currentLD_LIBRARY_PATH = ProcessBuilder().command("su", "-c", "printenv LD_LIBRARY_PATH").start().inputStream.bufferedReader().readText().trim()
-            val currentPATH = ProcessBuilder().command("su", "-c", "printenv PATH").start().inputStream.bufferedReader().readText().trim()
-            val envSetup = """
-                export LD_LIBRARY_PATH="$RADARE2_LIB_PATH:$currentLD_LIBRARY_PATH"
-                export PATH="$BUSYBOX_PATH:$RADARE2_BIN_PATH:$currentPATH"
-            """.trimIndent()
-
-            findAndSaveSdpOffset(libraryPath, envSetup)
-
-            _progressState.value = ProgressState.Cleaning
-            cleanupExtractedFiles()
-
-            _progressState.value = ProgressState.Success(0L)
-            return@withContext true
-
-        } catch (e: Exception) {
-            _progressState.value = ProgressState.Error("Error: ${e.message}")
-            Log.e(TAG, "Error in findSdpOffset", e)
-            return@withContext false
-        }
-    }
-}

android/app/src/main/res/values-fr/strings.xml

@@ -0,0 +1,217 @@
+<resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="MissingTranslation">
+    <string name="app_name" translatable="false">LibrePods</string>
+    <string name="app_description">Libérez vos AirPods de l\'écosystème Apple.</string>
+    <string name="app_widget_description">Voyez l\'état de la batterie de vos AirPods directement depuis votre écran d\'accueil !</string>
+    <string name="accessibility">Accessibilité</string>
+    <string name="tone_volume">Volume de la tonalité</string>
+    <string name="tone_volume_description">Ajustez le volume des effets sonores émis sur les AirPods.</string>
+    <string name="audio">Audio</string>
+    <string name="adaptive_audio">Audio Adaptatif</string>
+    <string name="customize_adaptive_audio">Personnaliser l\'Audio Adaptatif</string>
+    <string name="adaptive_audio_description">L\'audio Adaptatif répond dynamiquement à votre environnement et annule ou laisse entrer le bruit extérieur. Vous pouvez personnaliser l\'Audio Adaptatif pour laisser entrer plus ou moins de bruit.</string>
+    <string name="buds">Écouteurs</string>
+    <string name="case_alt">Boîtier</string>
+    <string name="test">Test</string>
+    <string name="name">Nom</string>
+    <string name="noise_control">Mode d\'écoute</string>
+    <string name="off">Désactivé</string>
+    <string name="transparency">Transparence</string>
+    <string name="adaptive">Adaptatif</string>
+    <string name="noise_cancellation">Réduction de bruit</string>
+    <string name="press_and_hold_airpods">Appuyer et maintenir les AirPods</string>
+    <string name="press_and_hold_noise_control_description">Maintenez la tige pour passer entre les modes d\'écoute sélectionnés.</string>
+    <string name="head_gestures">Gestes de la tête</string>
+    <string name="left">Gauche</string>
+    <string name="right">Droite</string>
+    <string name="conversational_awareness">Détection des conversations</string>
+    <string name="conversational_awareness_description">Baisse le volume des médias et réduit le bruit de fond lorsque vous commencez à parler à quelqu\'un.</string>
+    <string name="personalized_volume">Volume personnalisé</string>
+    <string name="personalized_volume_description">Ajuste le volume des médias en réponse à votre environnement.</string>
+    <string name="noise_cancellation_single_airpod">Réduction du bruit avec un écouteur</string>
+    <string name="noise_cancellation_single_airpod_description">Permet d\'activer la réduction de bruit même avec un seul AirPod à l\'oreille.</string>
+    <string name="volume_control">Contrôle du volume</string>
+    <string name="volume_control_description">Ajustez le volume en balayant vers le haut ou vers le bas sur le capteur situé sur la tige des AirPods Pro.</string>
+    <string name="airpods_not_connected">AirPods non connectés</string>
+    <string name="airpods_not_connected_description">Veuillez connecter vos AirPods pour accéder aux réglages.</string>
+    <string name="back">Retour</string>
+    <string name="app_settings">Personnalisations</string>
+    <string name="relative_conversational_awareness_volume">Volume relatif</string>
+    <string name="relative_conversational_awareness_volume_description">Réduit à un pourcentage du volume actuel plutôt qu\'au volume maximum.</string>
+    <string name="conversational_awareness_pause_music">Mettre la musique en pause</string>
+    <string name="conversational_awareness_pause_music_description">Quand vous commencez à parler, la musique sera mise en pause.</string>
+    <string name="appwidget_text">EXEMPLE</string>
+    <string name="add_widget">Ajouter le widget</string>
+    <string name="noise_control_widget_description">Contrôlez le mode de réduction de bruit directement depuis votre écran d\'accueil.</string>
+    <string name="island_connected_text">Connecté</string>
+    <string name="island_connected_remote_text">Connecté à Linux</string>
+    <string name="island_taking_over_text">Connecté</string>
+    <string name="island_moved_to_remote_text">Déplacé vers Linux</string>
+    <string name="island_moved_to_other_device_text">Déplacé vers %1$s</string>
+    <string name="island_moved_to_other_device_reversed_text">Reconnecté depuis la notification</string>
+    <string name="head_tracking">Suivi de la tête</string>
+    <string name="head_gestures_details">Hochez la tête pour répondre aux appels, secouez-la pour refuser.</string>
+    <string name="general_settings_header">Général</string>
+    <string name="qs_click_behavior_title">Action de la tuile dans les réglages rapides</string>
+    <string name="qs_click_behavior_dialog_desc">Afficher le dialogue de contrôle du bruit au toucher.</string>
+    <string name="qs_click_behavior_cycle_desc">Faire défiler les modes au toucher.</string>
+    <string name="developer_options_header">Développeur</string>
+    <string name="more_settings_title">Ouvrir les réglages des AirPods</string>
+    <string name="more_settings_subtitle">Gérer les fonctionnalités et préférences des AirPods</string>
+    <string name="ear_detection">Détection automatique des oreilles</string>
+    <string name="auto_play">Lecture Automatique</string>
+    <string name="auto_pause">Pause Automatique</string>
+    <string name="troubleshooting">Dépannage</string>
+    <string name="troubleshooting_description">Collecter des journaux pour diagnostiquer les problèmes de connexion des AirPods</string>
+    <string name="collect_logs">Collecter les journaux</string>
+    <string name="saved_logs">Journaux enregistrés</string>
+    <string name="no_logs_found">Aucun journal sauvegardé trouvé</string>
+    <string name="takeover_header">Préférences d\'auto-connexion</string>
+    <string name="takeover_airpods_state">Se connecter aux AirPods lorsque leur état est :</string>
+    <string name="takeover_disconnected">Déconnectés</string>
+    <string name="takeover_disconnected_desc">Les AirPods ne sont connectés à aucun appareil</string>
+    <string name="takeover_idle">Inactifs</string>
+    <string name="takeover_idle_desc">Un appareil est connecté à vos AirPods, mais ne lit pas de média et n\'est pas en appel</string>
+    <string name="takeover_music">Lecture de média</string>
+    <string name="takeover_music_desc">Un appareil lit du média via les AirPods</string>
+    <string name="takeover_call">En appel</string>
+    <string name="takeover_call_desc">Un appareil est en appel via les AirPods</string>
+    <string name="takeover_phone_state">Se connecter aux AirPods lorsque votre téléphone :</string>
+    <string name="takeover_ringing_call">Reçoit un appel</string>
+    <string name="takeover_ringing_call_desc">Votre téléphone commence à sonner</string>
+    <string name="takeover_media_start">Démarre la lecture média</string>
+    <string name="takeover_media_start_desc">Votre téléphone commence à lire un média</string>
+    <string name="undo">Annuler</string>
+    <string name="customize_transparency_mode_description">Vous pouvez personnaliser le mode Transparence de vos AirPods Pro pour vous aider à entendre ce qui vous entoure.</string>
+    <string name="loud_sound_reduction_description">La réduction des sons forts peut réduire activement votre exposition aux bruits ambiants forts en mode Transparence et Adaptatif. La réduction des sons forts n\'est pas active en mode Désactivé.</string>
+    <string name="loud_sound_reduction">Réduction des sons forts</string>
+    <string name="call_controls">Contrôle des appels</string>
+    <string name="automatically_connect">Se connecter automatiquement à cet appareil</string>
+    <string name="automatically_connect_description">Quand ce mode est activé, les AirPods essaieront de se connecter automatiquement à cet appareil. Sinon, ils essaieront uniquement de se connecter automatiquement au dernier appareil connecté.</string>
+    <string name="sleep_detection">Mettre en pause l\'écoute au moment de s\'endormir</string>
+    <string name="off_listening_mode">Mode d\'écoute Désactivé</string>
+    <string name="off_listening_mode_description">Quand ce paramètre est activé, les modes d\'écoute incluront une option Désactivé. Les sons forts ne sont pas réduits en mode Désactivé.</string>
+    <string name="microphone">Microphone</string>
+    <string name="microphone_mode">Mode du microphone</string>
+    <string name="microphone_automatic">Automatique</string>
+    <string name="microphone_always_right">Toujours à droite</string>
+    <string name="microphone_always_left">Toujours à gauche</string>
+    <string name="answer_call">Répondre aux appels</string>
+    <string name="mute_unmute">Muet / Activer le son</string>
+    <string name="hang_up">Raccrocher</string>
+    <string name="press_once">Appuyer une fois</string>
+    <string name="press_twice">Appuyer deux fois</string>
+    <string name="hearing_aid">Aide auditive</string>
+    <string name="adjustments">Ajustements</string>
+    <string name="swipe_to_control_amplification">Balayer pour contrôler l\'amplification</string>
+    <string name="swipe_amplification_description">En mode Transparence et sans lecture média, balayez sur les commandes tactiles des AirPods Pro pour augmenter ou diminuer l\'amplification des sons environnants.</string>
+    <string name="transparency_mode">Mode Transparence</string>
+    <string name="customize_transparency_mode">Personnaliser le mode Transparence</string>
+    <string name="press_speed">Vitesse d\'appui</string>
+    <string name="press_speed_description">Ajustez la vitesse requise pour appuyer deux ou trois fois sur vos AirPods.</string>
+    <string name="press_and_hold_duration">Durée d\'appui et de maintien</string>
+    <string name="press_and_hold_duration_description">Ajustez la durée requise pour maintenir la pression sur vos AirPods.</string>
+    <string name="volume_swipe_speed">Vitesse du balayage du volume</string>
+    <string name="volume_swipe_speed_description">Pour éviter les changements de volume involontaires, sélectionnez le délai préféré entre les balayages.</string>
+    <string name="equalizer">Égaliseur</string>
+    <string name="apply_eq_to">Appliquer l\'EQ à</string>
+    <string name="phone">Téléphone</string>
+    <string name="media">Média</string>
+    <string name="band_label">Bande %d</string>
+    <string name="default_option">Par défaut</string>
+    <string name="slower">Plus lent</string>
+    <string name="slowest">Très lent</string>
+    <string name="longer">Plus long</string>
+    <string name="longest">Très long</string>
+    <string name="darker">Plus sombre</string>
+    <string name="brighter">Plus clair</string>
+    <string name="less">Moins</string>
+    <string name="more">Plus</string>
+    <string name="amplification">Amplification</string>
+    <string name="balance">Balance</string>
+    <string name="tone">Tonalité</string>
+    <string name="ambient_noise_reduction">Réduction des bruits ambiants</string>
+    <string name="conversation_boost">Amplificateur de conversation</string>
+    <string name="conversation_boost_description">L\'Amplificateur de conversation concentre les AirPods Pro sur la personne en face de vous, facilitant les conversations en face-à-face.</string>
+    <string name="hearing_aid_description">Les AirPods peuvent utiliser les résultats d\'un test auditif pour améliorer la clarté des voix et des sons autour de vous.\n\nL\'aide auditive est destinée aux personnes ayant une perte auditive légère à modérée.</string>
+    <string name="media_assist">Aide multimédia</string>
+    <string name="media_assist_description">Les AirPods Pro peuvent utiliser les résultats d\'un test auditif pour améliorer la clarté de la musique, des vidéos et des appels.</string>
+    <string name="adjust_media">Ajuster la musique et les vidéos</string>
+    <string name="adjust_calls">Ajuster les appels</string>
+    <string name="widget">Widget</string>
+    <string name="show_phone_battery_in_widget">Afficher la batterie du téléphone dans le widget</string>
+    <string name="show_phone_battery_in_widget_description">Affiche le niveau de batterie du téléphone dans le widget avec celle des AirPods</string>
+    <string name="conversational_awareness_volume">Volume de détection des conversations</string>
+    <string name="quick_settings_tile">Tuile des réglages rapides</string>
+    <string name="open_dialog_for_controlling">Ouvrir le dialogue de contrôle</string>
+    <string name="open_dialog_for_controlling_description">Si désactivé, appuyer sur la tuile fera défiler les modes. Si activé, un dialogue apparaîtra pour contrôler le mode d\'écoute et la détection de conversation.</string>
+    <string name="disconnect_when_not_wearing">Déconnecter les AirPods quand ils ne sont pas portés</string>
+    <string name="disconnect_when_not_wearing_description">Vous pourrez toujours les contrôler depuis l\'app — cela déconnecte juste l\'audio.</string>
+    <string name="advanced_options">Options avancées</string>
+    <string name="set_identity_resolving_key">Définir la clé d\'identité et de résolution (IRK)</string>
+    <string name="set_identity_resolving_key_description">Définir manuellement la clé IRK utilisée pour la résolution des adresses BLE aléatoires</string>
+    <string name="set_encryption_key">Définir la clé de chiffrement</string>
+    <string name="set_encryption_key_description">Définir manuellement la clé ENC_KEY utilisée pour déchiffrer les publicités BLE</string>
+    <string name="use_alternate_head_tracking_packets">Utiliser des paquets alternatifs pour le suivi de la tête</string>
+    <string name="use_alternate_head_tracking_packets_description">Activez ceci si le suivi de tête ne fonctionne pas. Cela envoie un autre type de données aux AirPods pour demander/arrêter le suivi de la tête.</string>
+    <string name="act_as_an_apple_device">Se comporter comme un appareil Apple</string>
+    <string name="act_as_an_apple_device_description">Active la connectivité multi-appareils et les fonctionnalités d\'accessibilité comme la personnalisation du mode transparence (amplification, tonalité, réduction de bruit ambiant, amplificateur de conversations, EQ)</string>
+    <string name="act_as_an_apple_device_warning">Peut être instable !! Un maximum de deux appareils peut être connecté à vos AirPods. Si vous utilisez un appareil Apple comme un iPad ou un Mac, connectez-le d\'abord, puis connectez votre Android.</string>
+    <string name="reset_hook_offset">Réinitialiser l\'offset du hook</string>
+    <string name="reset_hook_offset_description">Cela effacera l\'offset actuel et nécessitera de refaire la configuration. Voulez-vous vraiment continuer ?</string>
+    <string name="reset">Réinitialiser</string>
+    <string name="hook_offset_reset_success">Hook offset réinitialisé. Redirection vers la configuration…</string>
+    <string name="hook_offset_reset_failure">Impossible de réinitialiser l\'hook offset</string>
+    <string name="irk_set_success">Clé IRK définie avec succès</string>
+    <string name="encryption_key_set_success">Clé de chiffrement définie avec succès</string>
+    <string name="irk_hex_value">Valeur hex IRK</string>
+    <string name="enc_key_hex_value">Valeur hex ENC_KEY</string>
+    <string name="enter_irk_hex">Entrez l\'IRK de 16 octets en string hexadécimal (32 caractères) :</string>
+    <string name="enter_enc_key_hex">Entrez l\'ENC_KEY de 16 octets en string hexadécimal (32 caractères) :</string>
+    <string name="must_be_32_hex_chars">Doit contenir exactement 32 caractères hexadécimaux</string>
+    <string name="error_converting_hex">Erreur lors de la conversion hexadécimale :</string>
+    <string name="found_offset_restart_bluetooth">Offset trouvé. Veuillez redémarrer le processus Bluetooth.</string>
+    <string name="digital_assistant">Assistant numérique</string>
+    <string name="on">Activé</string>
+    <string name="camera_remote">Télécommande de l\'appareil photo</string>
+    <string name="camera_control">Contrôle de la caméra</string>
+    <string name="camera_control_description">Prenez une photo, lancez/arrêtez un enregistrement, etc., avec un appui simple ou un appui long. Si vous utilisez un appui simple, les gestes de contrôle multimédia seront indisponibles ; si vous utilisez un appui long, les gestes de mode d\'écoute et d\'assistant numérique seront indisponibles.</string>
+    <string name="camera_control_app_description">Définir un paquet d\'application de caméra personnalisé</string>
+    <string name="set_custom_camera_package">Définir un appid de caméra personnalisé</string>
+    <string name="enter_custom_camera_package">Entrez l\'identifiant de l\'application caméra :</string>
+    <string name="custom_camera_package">Appid caméra personnalisé</string>
+    <string name="custom_camera_package_set_success">Appid caméra personnalisé défini avec succès</string>
+    <string name="app_listener_service_label">Service d\'écoute de la caméra</string>
+    <string name="app_listener_service_description">Service d\'écoute pour que LibrePods détecte quand la caméra est active afin d\'activer le contrôle caméra via les AirPods.</string>
+    <string name="open_source_licenses">Licences open source</string>
+    <string name="hearing_test">Mettre à jour le test d\'audition</string>
+    <string name="update_hearing_test">Mettre à jour les résultats du test d\'audition</string>
+    <string name="att_manager_is_null_try_reconnecting">ATT Manager est null, essayez de reconnecter.</string>
+    <string name="permissions_required">Les permissions suivantes sont requises pour utiliser l\'application. Veuillez les accorder pour continuer.</string>
+    <string name="shake_your_head_or_nod">Secouez la tête ou hochez-la !</string>
+    <string name="root_access_required">Accès root requis</string>
+    <string name="this_app_needs_root_access_to_hook_onto_the_bluetooth_library">Cette application nécessite l\'accès root pour s\'injecter dans la bibliothèque Bluetooth.</string>
+    <string name="root_access_denied">Accès root refusé. Veuillez accorder les permissions root.</string>
+    <string name="troubleshooting_steps">Étapes de dépannage</string>
+    <string name="hearing_test_value_instruction">Veuillez entrer les valeurs de perte en dBHL</string>
+    <string name="about">À propos</string>
+    <string name="model_name">Nom du modèle</string>
+    <string name="model_number">Numéro du modèle</string>
+    <string name="serial_number">Numéro de série</string>
+    <string name="version">Version</string>
+    <string name="hearing_health">Santé auditive</string>
+    <string name="hearing_protection">Protection auditive</string>
+    <string name="workspace_use">Usage en environnement de travail</string>
+    <string name="ppe">Protection EN 352</string>
+    <string name="workspace_use_description">La protection EN 352 limite le niveau sonore maximal à 82 dBA et répond aux exigences applicables de la norme EN 352 pour la protection auditive personnelle.</string>
+    <string name="environmental_noise">Bruit environnemental</string>
+    <string name="reconnect_to_last_device">Reconnecter au dernier appareil</string>
+    <string name="disconnect">Déconnecter</string>
+    <string name="support_me">Soutenez-moi</string>
+    <string name="never_show_again">Ne plus afficher</string>
+    <string name="support_dialog_description">J\'ai récemment perdu mon AirPod gauche. Si LibrePods vous est utile, pensez à me soutenir sur GitHub Sponsors pour m\'aider à en racheter un et continuer ce projet — même un petit montant aide beaucoup. Merci pour votre soutien !</string>
+    <string name="support_librepods">Soutenir LibrePods</string>
+    <string name="listening_mode_off_description">Désactiver la gestion du bruit</string>
+    <string name="listening_mode_transparency_description">Laisser entrer les sons extérieurs</string>
+    <string name="listening_mode_adaptive_description">Ajuster dynamiquement les sons extérieurs</string>
+    <string name="listening_mode_noise_cancellation_description">Bloquer les sons extérieurs</string>
+</resources>

android/app/src/main/res/values-zh-rCN/strings.xml

@@ -194,6 +194,11 @@
     <string name="root_access_denied">Root 权限被拒绝。请授予 Root 权限。</string>
     <string name="troubleshooting_steps">故障排除步骤</string>
     <string name="hearing_test_value_instruction">请输入 dbHL 中的损失值</string>
+    <string name="about">关于</string>
+    <string name="model_name">型号名称</string>
+    <string name="model_number">型号编号</string>
+    <string name="serial_number">序列号</string>
+    <string name="version">版本</string>
     <string name="hearing_health">听力健康</string>
     <string name="hearing_protection">听力保护</string>
     <string name="workspace_use">工作区使用</string>
@@ -202,6 +207,12 @@
     <string name="environmental_noise">环境噪音</string>
     <string name="reconnect_to_last_device">重新连接到上次连接的设备</string>
     <string name="disconnect">断开连接</string>
+    <string name="support_me">支持我</string>
+    <string name="never_show_again">不再显示</string>
     <string name="support_dialog_description">我最近丢了我的左耳 AirPod。如果你觉得 LibrePods 有用，请考虑在 GitHub Sponsors 上支持我，这样我就可以购买一个替换品并继续从事这个项目——即使是少量捐助也能发挥很大作用。感谢你的支持！</string>
     <string name="support_librepods">支持 LibrePods</string>
+    <string name="listening_mode_off_description">关闭噪音管理</string>
+    <string name="listening_mode_transparency_description">允许外部声音进入</string>
+    <string name="listening_mode_adaptive_description">动态调整外部噪音</string>
+    <string name="listening_mode_noise_cancellation_description">阻隔外部声音</string>
 </resources>

android/app/src/main/res/values-zh-rTW/strings.xml

@@ -0,0 +1,219 @@
+<resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="MissingTranslation">
+    <string name="app_name" translatable="false">LibrePods</string>
+    <string name="app_description">讓你的 AirPods 擺脫 Apple 生態系統的束縛。</string>
+    <string name="app_widget_description">直接從主畫面查看 AirPods 電池狀態！</string>
+    <string name="accessibility">輔助使用</string>
+    <string name="tone_volume">提示音音量</string>
+    <string name="tone_volume_description">調整 AirPods 播放音效的提示音音量。</string>
+    <string name="audio">音訊</string>
+    <string name="adaptive_audio">自適應音訊</string>
+    <string name="customize_adaptive_audio">自訂自適應音訊</string>
+    <string name="adaptive_audio_description">自適應音訊會動態回應你的環境，並消除或允許外部噪音。你可以自訂自適應音訊以允許更多或更少的噪音。</string>
+    <string name="buds">耳機</string>
+    <string name="case_alt">充電盒</string>
+    <string name="test">測試</string>
+    <string name="name">名稱</string>
+    <string name="noise_control">聽覺模式</string>
+    <string name="off">關閉</string>
+    <string name="transparency">通透模式</string>
+    <string name="adaptive">自適應</string>
+    <string name="noise_cancellation">降噪</string>
+    <string name="press_and_hold_airpods">按住 AirPods</string>
+    <string name="press_and_hold_noise_control_description">按住耳機柄即可在選定的聽覺模式之間循環切換。</string>
+    <string name="head_gestures">頭部手勢</string>
+    <string name="left">左耳</string>
+    <string name="right">右耳</string>
+    <string name="conversational_awareness">對話感知</string>
+    <string name="conversational_awareness_description">當你開始與他人交談時，降低媒體音量並減少背景噪音。</string>
+    <string name="personalized_volume">個人化音量</string>
+    <string name="personalized_volume_description">根據你的環境調整媒體音量。</string>
+    <string name="noise_cancellation_single_airpod">使用一只 AirPod 進行降噪</string>
+    <string name="noise_cancellation_single_airpod_description">允許在僅配戴一只 AirPod 時進入降噪模式。</string>
+    <string name="volume_control">音量控制</string>
+    <string name="volume_control_description">透過在 AirPods Pro 耳機柄上的感測器向上或向下滑動來調整音量。</string>
+    <string name="airpods_not_connected">未連接 AirPods</string>
+    <string name="airpods_not_connected_description">請連接你的 AirPods 以存取設定。</string>
+    <string name="back">返回</string>
+    <string name="app_settings">自訂</string>
+    <string name="relative_conversational_awareness_volume">相對音量</string>
+    <string name="relative_conversational_awareness_volume_description">降低至當前音量的百分比，而不是最大音量。</string>
+    <string name="conversational_awareness_pause_music">暫停音樂</string>
+    <string name="conversational_awareness_pause_music_description">當你開始說話時，音樂將會暫停。</string>
+    <string name="appwidget_text">範例</string>
+    <string name="add_widget">新增小工具</string>
+    <string name="noise_control_widget_description">直接從主畫面控制聽覺模式。</string>
+    <string name="island_connected_text">已連線</string>
+    <string name="island_connected_remote_text">已連線至 Linux</string>
+    <string name="island_taking_over_text">已連線</string>
+    <string name="island_moved_to_remote_text">已移至 Linux</string>
+    <string name="island_moved_to_other_device_text">已移至 %1$s</string>
+    <string name="island_moved_to_other_device_reversed_text">從通知重新連線</string>
+    <string name="head_tracking">頭部追蹤</string>
+    <string name="head_gestures_details">點頭接聽來電，搖頭拒接。</string>
+    <string name="general_settings_header">一般</string>
+    <string name="qs_click_behavior_title">快速設定方塊動作</string>
+    <string name="qs_click_behavior_dialog_desc">輕觸時顯示聽覺模式對話方塊。</string>
+    <string name="qs_click_behavior_cycle_desc">輕觸時循環切換模式。</string>
+    <string name="developer_options_header">開發人員</string>
+    <string name="more_settings_title">開啟 AirPods 設定</string>
+    <string name="more_settings_subtitle">管理 AirPods 功能與偏好設定</string>
+    <string name="ear_detection">自動耳朵偵測</string>
+    <string name="auto_play">自動播放</string>
+    <string name="auto_pause">自動暫停</string>
+    <string name="troubleshooting">疑難排解</string>
+    <string name="troubleshooting_description">收集記錄以診斷 AirPods 連線問題</string>
+    <string name="collect_logs">收集記錄</string>
+    <string name="saved_logs">已儲存的記錄</string>
+    <string name="no_logs_found">找不到已儲存的記錄</string>
+    <string name="takeover_header">自動連線偏好設定</string>
+    <string name="takeover_airpods_state">當 AirPods 處於以下狀態時連線：</string>
+    <string name="takeover_disconnected">已中斷連線</string>
+    <string name="takeover_disconnected_desc">AirPods 未連接至任何裝置</string>
+    <string name="takeover_idle">閒置</string>
+    <string name="takeover_idle_desc">裝置已連接至你的 AirPods，但未播放媒體或通話中</string>
+    <string name="takeover_music">正在播放媒體</string>
+    <string name="takeover_music_desc">裝置正在你的 AirPods 上播放媒體</string>
+    <string name="takeover_call">通話中</string>
+    <string name="takeover_call_desc">裝置正在使用你的 AirPods 進行通話</string>
+    <string name="takeover_phone_state">當你的手機處於以下狀態時連接至 AirPods：</string>
+    <string name="takeover_ringing_call">接到來電</string>
+    <string name="takeover_ringing_call_desc">你的手機開始響鈴</string>
+    <string name="takeover_media_start">開始播放媒體</string>
+    <string name="takeover_media_start_desc">你的手機開始播放媒體</string>
+    <string name="undo">復原</string>
+    <string name="customize_transparency_mode_description">你可以自訂 AirPods Pro 的通透模式，以協助你聽見周圍的聲音。</string>
+    <string name="loud_sound_reduction_description">「降低高音量」可在通透模式和自適應模式下，主動減少你接觸到的環境高噪音。在「關閉」模式下，「降低高音量」不會作用。</string>
+    <string name="loud_sound_reduction">降低高音量</string>
+    <string name="call_controls">通話控制</string>
+    <string name="automatically_connect">自動連接此裝置</string>
+    <string name="automatically_connect_description">啟用後，AirPods 將嘗試自動連接至此裝置。否則，它們僅會在上次連接過此裝置時嘗試自動連接。</string>
+    <string name="sleep_detection">入睡時暫停媒體</string>
+    <string name="off_listening_mode">「關閉」聽覺模式</string>
+    <string name="off_listening_mode_description">開啟此選項後，AirPods 聽覺模式將包含「關閉」選項。當聽覺模式設為「關閉」時，不會降低高音量。</string>
+    <string name="microphone">麥克風</string>
+    <string name="microphone_mode">麥克風模式</string>
+    <string name="microphone_automatic">自動</string>
+    <string name="microphone_always_right">總是右耳</string>
+    <string name="microphone_always_left">總是左耳</string>
+    <string name="answer_call">接聽來電</string>
+    <string name="mute_unmute">靜音/取消靜音</string>
+    <string name="hang_up">掛斷</string>
+    <string name="press_once">按一下</string>
+    <string name="press_twice">按兩下</string>
+    <string name="hearing_aid">助聽器</string>
+    <string name="adjustments">調整</string>
+    <string name="swipe_to_control_amplification">滑動以控制增強</string>
+    <string name="swipe_amplification_description">在通透模式且未播放媒體時，在 AirPods Pro 的觸控控制上向上或向下滑動，可增加或減少環境聲音的增強效果。</string>
+    <string name="transparency_mode">通透模式</string>
+    <string name="customize_transparency_mode">自訂通透模式</string>
+    <string name="press_speed">按壓速度</string>
+    <string name="press_speed_description">調整在 AirPods 上按兩下或三下所需的速度。</string>
+    <string name="press_and_hold_duration">按住持續時間</string>
+    <string name="press_and_hold_duration_description">調整在 AirPods 上按住所須的時間。</string>
+    <string name="volume_swipe_speed">音量滑動速度</string>
+    <string name="volume_swipe_speed_description">為防止意外調整音量，請選擇滑動之間的偏好等待時間。</string>
+    <string name="equalizer">等化器</string>
+    <string name="apply_eq_to">套用 EQ 至</string>
+    <string name="phone">電話</string>
+    <string name="media">媒體</string>
+    <string name="band_label">頻段 %d</string>
+    <string name="default_option">預設</string>
+    <string name="slower">較慢</string>
+    <string name="slowest">最慢</string>
+    <string name="longer">較長</string>
+    <string name="longest">最長</string>
+    <string name="darker">較低沉</string>
+    <string name="brighter">較清亮</string>
+    <string name="less">較少</string>
+    <string name="more">較多</string>
+    <string name="amplification">增強</string>
+    <string name="balance">平衡</string>
+    <string name="tone">音色</string>
+    <string name="ambient_noise_reduction">環境噪音抑制</string>
+    <string name="conversation_boost">對話增強</string>
+    <string name="conversation_boost_description">「對話增強」會將你的 AirPods Pro 聚焦於你面前說話的人，讓你在面對面交談時更容易聽清楚。</string>
+    <string name="hearing_aid_description">AirPods 可以使用聽力測試的結果進行調整，以改善你周圍的語音和聲音清晰度。
+
+助聽器功能僅適用於有輕度至中度聽力受損的人士。</string>
+    <string name="media_assist">媒體輔助</string>
+    <string name="media_assist_description">AirPods Pro 可以使用聽力測試的結果進行調整，以改善音樂、影片和通話的清晰度。</string>
+    <string name="adjust_media">調整音樂與影片</string>
+    <string name="adjust_calls">調整通話</string>
+    <string name="widget">小工具</string>
+    <string name="show_phone_battery_in_widget">在小工具中顯示手機電量</string>
+    <string name="show_phone_battery_in_widget_description">在小工具中同時顯示手機電量與 AirPods 電量</string>
+    <string name="conversational_awareness_volume">對話感知音量</string>
+    <string name="quick_settings_tile">快速設定方塊</string>
+    <string name="open_dialog_for_controlling">開啟控制對話方塊</string>
+    <string name="open_dialog_for_controlling_description">若停用，點擊快速設定方塊將循環切換模式。若啟用，則會顯示用於控制聽覺模式和對話感知的對話方塊。</string>
+    <string name="disconnect_when_not_wearing">未配戴時中斷 AirPods 連線</string>
+    <string name="disconnect_when_not_wearing_description">你仍可使用應用程式控制它們，此選項僅會中斷音訊連線。</string>
+    <string name="advanced_options">進階選項</string>
+    <string name="set_identity_resolving_key">設定身分解析金鑰 (IRK)</string>
+    <string name="set_identity_resolving_key_description">手動設定用於解析 BLE 隨機位址的 IRK 值</string>
+    <string name="set_encryption_key">設定加密金鑰</string>
+    <string name="set_encryption_key_description">手動設定用於解密 BLE 廣播的 ENC_KEY值</string>
+    <string name="use_alternate_head_tracking_packets">使用替代頭部追蹤封包</string>
+    <string name="use_alternate_head_tracking_packets_description">如果頭部追蹤對你無效，請啟用此選項。這會傳送不同的資料給 AirPods 以請求/停止頭部追蹤資料。</string>
+    <string name="act_as_an_apple_device">作為 Apple 裝置</string>
+    <string name="act_as_an_apple_device_description">啟用多裝置連線及輔助使用功能，例如自訂通透模式（增強、音色、環境噪音抑制、對話增強及 EQ）。</string>
+    <string name="act_as_an_apple_device_warning">可能不穩定！！你的 AirPods 最多只能同時連接兩個裝置。如果你正與 iPad 或 Mac 等 Apple 裝置搭配使用，請先連接該裝置，然後再連接你的 Android。</string>
+    <string name="reset_hook_offset">重設 Hook 偏移量</string>
+    <string name="reset_hook_offset_description">這將清除目前的 Hook 偏移量，並需要你再次進行設定程序。確定要繼續嗎？</string>
+    <string name="reset">重設</string>
+    <string name="hook_offset_reset_success">Hook 偏移量已重設。正在重新導向至設定...</string>
+    <string name="hook_offset_reset_failure">重設 Hook 偏移量失敗</string>
+    <string name="irk_set_success">IRK 已設定成功</string>
+    <string name="encryption_key_set_success">加密金鑰已設定成功</string>
+    <string name="irk_hex_value">IRK 十六進位值</string>
+    <string name="enc_key_hex_value">ENC_KEY 十六進位值</string>
+    <string name="enter_irk_hex">輸入 16 位元組 IRK 為十六進位字串（32 個字元）：</string>
+    <string name="enter_enc_key_hex">輸入 16 位元組 ENC_KEY 為十六進位字串（32 個字元）：</string>
+    <string name="must_be_32_hex_chars">必須剛好是 32 個十六進位字元</string>
+    <string name="error_converting_hex">轉換十六進位時發生錯誤：</string>
+    <string name="found_offset_restart_bluetooth">找到偏移量，請重新啟動藍牙程序</string>
+    <string name="digital_assistant">語音助理</string>
+    <string name="on">開啟</string>
+    <string name="camera_remote">相機遙控</string>
+    <string name="camera_control">相機控制</string>
+    <string name="camera_control_description">使用「按一下」或「按住」來拍攝相片、開始或停止錄影等。當使用 AirPods 進行相機動作時，若選擇「按一下」，媒體控制手勢將無法使用；若選擇「按住」，聽覺模式和語音助理手勢將無法使用。</string>
+    <string name="camera_control_app_description">設定用於相機偵測的自訂應用程式套件</string>
+    <string name="set_custom_camera_package">設定自訂相機應用程式 ID</string>
+    <string name="enter_custom_camera_package">輸入相機應用程式的應用程式 ID：</string>
+    <string name="custom_camera_package">自訂相機應用程式 ID</string>
+    <string name="custom_camera_package_set_success">自訂相機應用程式 ID 設定成功</string>
+    <string name="app_listener_service_label">相機監聽器</string>
+    <string name="app_listener_service_description">LibrePods 的監聽器服務，用於偵測相機何時啟用，以啟動 AirPods 上的相機控制。</string>
+    <string name="open_source_licenses">開放原始碼授權</string>
+    <string name="hearing_test">更新聽力測試</string>
+    <string name="update_hearing_test">更新聽力測試結果</string>
+    <string name="att_manager_is_null_try_reconnecting">ATT Manager 為空值，請嘗試重新連線。</string>
+    <string name="permissions_required">需要以下權限才能使用此應用程式。請授權以繼續。</string>
+    <string name="shake_your_head_or_nod">搖頭或點頭！</string>
+    <string name="root_access_required">需要 Root 權限</string>
+    <string name="this_app_needs_root_access_to_hook_onto_the_bluetooth_library">此應用程式需要 Root 權限才能 Hook 藍牙程式庫</string>
+    <string name="root_access_denied">Root 權限被拒絕。請授權 Root 權限。</string>
+    <string name="troubleshooting_steps">疑難排解步驟</string>
+    <string name="hearing_test_value_instruction">請輸入 dbHL 中的損失值</string>
+    <string name="about">關於</string>
+    <string name="model_name">型號名稱</string>
+    <string name="model_number">型號號碼</string>
+    <string name="serial_number">序號</string>
+    <string name="version">版本</string>
+    <string name="hearing_health">聽力健康</string>
+    <string name="hearing_protection">聽力保護</string>
+    <string name="workspace_use">工作場所使用</string>
+    <string name="ppe">EN 352 防護</string>
+    <string name="workspace_use_description">EN 352 防護將媒體的最大音量限制為 82 dBA，並符合個人聽力保護的適用 EN 352 標準要求。</string>
+    <string name="environmental_noise">環境噪音</string>
+    <string name="reconnect_to_last_device">重新連接至上次連接的裝置</string>
+    <string name="disconnect">中斷連線</string>
+    <string name="support_me">贊助我</string>
+    <string name="never_show_again">不再顯示</string>
+    <string name="support_dialog_description">我最近弄丟了左耳的 AirPod。如果你覺得 LibrePods 很好用，請考慮在 GitHub Sponsors 上贊助我，讓我能買個替換品並繼續開發這個專案，一點點金額也能帶來很大的幫助。感謝你的支持！</string>
+    <string name="support_librepods">贊助 LibrePods</string>
+    <string name="listening_mode_off_description">關閉噪音管理</string>
+    <string name="listening_mode_transparency_description">允許外部聲音</string>
+    <string name="listening_mode_adaptive_description">動態調整外部噪音</string>
+    <string name="listening_mode_noise_cancellation_description">阻隔外部聲音</string>
+</resources>

linux/CMakeLists.txt

@@ -4,13 +4,18 @@ project(linux VERSION 0.1 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-find_package(Qt6 REQUIRED COMPONENTS Quick Widgets Bluetooth DBus)
+find_package(Qt6 REQUIRED COMPONENTS Quick Widgets Bluetooth DBus LinguistTools)
 find_package(OpenSSL REQUIRED)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(PULSEAUDIO REQUIRED libpulse)
 
 qt_standard_project_setup()
 
+# Translation files
+set(TS_FILES
+    translations/librepods_tr.ts
+)
+
 qt_add_executable(librepods
     main.cpp
     logger.h
@@ -85,3 +90,13 @@ install(FILES assets/me.kavishdevar.librepods.desktop
     DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/applications")
 install(FILES assets/librepods.png
     DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/512x512/apps")
+
+# Translation support
+qt_add_translations(librepods
+    TS_FILES ${TS_FILES}
+    QM_FILES_OUTPUT_VARIABLE QM_FILES
+)
+
+# Install translation files
+install(FILES ${QM_FILES}
+    DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/librepods/translations")

linux/Main.qml

@@ -81,7 +81,7 @@ ApplicationWindow {
 
                     Label {
                         anchors.centerIn: parent
-                        text: airPodsTrayApp.airpodsConnected ? "Connected" : "Disconnected"
+                        text: airPodsTrayApp.airpodsConnected ? qsTr("Connected") : qsTr("Disconnected")
                         color: "white"
                         font.pixelSize: 12
                         font.weight: Font.Medium
@@ -130,7 +130,7 @@ ApplicationWindow {
 
                 SegmentedControl {
                     anchors.horizontalCenter: parent.horizontalCenter
-                    model: ["Off", "Noise Cancellation", "Transparency", "Adaptive"]
+                    model: [qsTr("Off"), qsTr("Noise Cancellation"), qsTr("Transparency"), qsTr("Adaptive")]
                     currentIndex: airPodsTrayApp.deviceInfo.noiseControlMode
                     onCurrentIndexChanged: airPodsTrayApp.setNoiseControlModeInt(currentIndex)
                     visible: airPodsTrayApp.airpodsConnected
@@ -153,21 +153,21 @@ ApplicationWindow {
                     onValueChanged: if (pressed) debounceTimer.restart()
 
                     Label {
-                        text: "Adaptive Noise Level: " + parent.value
+                        text: qsTr("Adaptive Noise Level: ") + parent.value
                         anchors.top: parent.bottom
                     }
                 }
 
                 Switch {
                     visible: airPodsTrayApp.airpodsConnected
-                    text: "Conversational Awareness"
+                    text: qsTr("Conversational Awareness")
                     checked: airPodsTrayApp.deviceInfo.conversationalAwareness
                     onCheckedChanged: airPodsTrayApp.setConversationalAwareness(checked)
                 }
 
                 Switch {
                     visible: airPodsTrayApp.airpodsConnected
-                    text: "Hearing Aid"
+                    text: qsTr("Hearing Aid")
                     checked: airPodsTrayApp.deviceInfo.hearingAidEnabled
                     onCheckedChanged: airPodsTrayApp.setHearingAidEnabled(checked)
                 }
@@ -189,7 +189,7 @@ ApplicationWindow {
         id: settingsPage
         Page {
             id: settingsPageItem
-            title: "Settings"
+            title: qsTr("Settings")
 
             ScrollView {
                 anchors.fill: parent
@@ -200,7 +200,7 @@ ApplicationWindow {
                     padding: 20
 
                     Label {
-                        text: "Settings"
+                        text: qsTr("Settings")
                         font.pixelSize: 24
                         // center the label
                         anchors.horizontalCenter: parent.horizontalCenter
@@ -210,19 +210,19 @@ ApplicationWindow {
                         spacing: 5 // Small gap between label and ComboBox
 
                         Label {
-                            text: "Pause Behavior When Removing AirPods:"
+                            text: qsTr("Pause Behavior When Removing AirPods:")
                         }
 
                         ComboBox {
                             width: parent.width // Ensures full width
-                            model: ["One Removed", "Both Removed", "Never"]
+                            model: [qsTr("One Removed"), qsTr("Both Removed"), qsTr("Never")]
                             currentIndex: airPodsTrayApp.earDetectionBehavior
                             onActivated: airPodsTrayApp.earDetectionBehavior = currentIndex
                         }
                     }
 
                     Switch {
-                        text: "Cross-Device Connectivity with Android"
+                        text: qsTr("Cross-Device Connectivity with Android")
                         checked: airPodsTrayApp.crossDeviceEnabled
                         onCheckedChanged: {
                             airPodsTrayApp.setCrossDeviceEnabled(checked)
@@ -230,26 +230,26 @@ ApplicationWindow {
                     }
 
                     Switch {
-                        text: "Auto-Start on Login"
+                        text: qsTr("Auto-Start on Login")
                         checked: airPodsTrayApp.autoStartManager.autoStartEnabled
                         onCheckedChanged: airPodsTrayApp.autoStartManager.autoStartEnabled = checked
                     }
 
                     Switch {
-                        text: "Enable System Notifications"
+                        text: qsTr("Enable System Notifications")
                         checked: airPodsTrayApp.notificationsEnabled
                         onCheckedChanged: airPodsTrayApp.notificationsEnabled = checked
                     }
 
                     Switch {
                         visible: airPodsTrayApp.airpodsConnected
-                        text: "One Bud ANC Mode"
+                        text: qsTr("One Bud ANC Mode")
                         checked: airPodsTrayApp.deviceInfo.oneBudANCMode
                         onCheckedChanged: airPodsTrayApp.deviceInfo.oneBudANCMode = checked
 
                         ToolTip {
                             visible: parent.hovered
-                            text: "Enable ANC when using one AirPod\n(More noise reduction, but uses more battery)"
+                            text: qsTr("Enable ANC when using one AirPod\n(More noise reduction, but uses more battery)")
                             delay: 500
                         }
                     }
@@ -257,7 +257,7 @@ ApplicationWindow {
                     Row {
                         spacing: 5
                         Label {
-                            text: "Bluetooth Retry Attempts:"
+                            text: qsTr("Bluetooth Retry Attempts:")
                             anchors.verticalCenter: parent.verticalCenter
                         }
                         SpinBox {
@@ -279,7 +279,7 @@ ApplicationWindow {
                         }
 
                         Button {
-                            text: "Rename"
+                            text: qsTr("Rename")
                             onClicked: airPodsTrayApp.renameAirPods(newNameField.text)
                         }
                     }
@@ -295,14 +295,14 @@ ApplicationWindow {
                         }
 
                         Button {
-                            text: "Change Phone MAC"
+                            text: qsTr("Change Phone MAC")
                             onClicked: airPodsTrayApp.setPhoneMac(newPhoneMacField.text)
                         }
                     }
 
 
                     Button {
-                        text: "Show Magic Cloud Keys QR"
+                        text: qsTr("Show Magic Cloud Keys QR")
                         onClicked: keysQrDialog.show()
                     }
 

linux/hearing-aid-adjustments.py

@@ -4,7 +4,7 @@ import socket
 import struct
 import sys
 import threading
-from socket import socket as Socket, TimeoutError
+from socket import socket as Socket
 from queue import Queue
 from threading import Thread
 from typing import Any, Dict, List, Optional

linux/main.cpp

@@ -12,6 +12,10 @@
 #include <QTimer>
 #include <QProcess>
 #include <QRegularExpression>
+#include <QTranslator>
+#include <QLibraryInfo>
+#include <QDir>
+#include <QStandardPaths>
 
 #include "airpods_packets.h"
 #include "logger.h"
@@ -987,6 +991,25 @@ private:
 int main(int argc, char *argv[]) {
     QApplication app(argc, argv);
 
+    // Load translations
+    QTranslator *translator = new QTranslator(&app);
+    QString locale = QLocale::system().name();
+
+    // Try to load translation from various locations
+    QStringList translationPaths = {
+        QCoreApplication::applicationDirPath() + "/translations",
+        QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + "/librepods/translations",
+        "/usr/share/librepods/translations",
+        "/usr/local/share/librepods/translations"
+    };
+
+    for (const QString &path : translationPaths) {
+        if (translator->load("librepods_" + locale, path)) {
+            app.installTranslator(translator);
+            break;
+        }
+    }
+
     QLocalServer::removeServer("app_server");
 
     QFile stale("/tmp/app_server");

linux/translations/librepods_it_IT.ts

@@ -0,0 +1,151 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="it_IT">
+<context>
+    <name>Main</name>
+    <message>
+        <source>Connected</source>
+        <translation>Connesso</translation>
+    </message>
+    <message>
+        <source>Disconnected</source>
+        <translation>Disconnesso</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Non attivo</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Cancellazione rumore</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Trasparenza</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Adattivo</translation>
+    </message>
+    <message>
+        <source>Adaptive Noise Level: </source>
+        <translation>Livello rumore adattivo: </translation>
+    </message>
+    <message>
+        <source>Conversational Awareness</source>
+        <translation>Rilevamento conversazione</translation>
+    </message>
+    <message>
+        <source>Hearing Aid</source>
+        <translation>Apparecchio acustico</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Impostazioni</translation>
+    </message>
+    <message>
+        <source>Pause Behavior When Removing AirPods:</source>
+        <translation>Pausa alla rimozione delle AirPods:</translation>
+    </message>
+    <message>
+        <source>One Removed</source>
+        <translation>Una rimossa</translation>
+    </message>
+    <message>
+        <source>Both Removed</source>
+        <translation>Entrambe rimosse</translation>
+    </message>
+    <message>
+        <source>Never</source>
+        <translation>Mai</translation>
+    </message>
+    <message>
+        <source>Cross-Device Connectivity with Android</source>
+        <translation>Connettività multi-dispositivo con Android</translation>
+    </message>
+    <message>
+        <source>Auto-Start on Login</source>
+        <translation>Avvio automatico all'accesso</translation>
+    </message>
+    <message>
+        <source>Enable System Notifications</source>
+        <translation>Abilita notifiche di sistema</translation>
+    </message>
+    <message>
+        <source>One Bud ANC Mode</source>
+        <translation>Modalità ANC singolo auricolare</translation>
+    </message>
+    <message>
+        <source>Enable ANC when using one AirPod
+(More noise reduction, but uses more battery)</source>
+        <translation>Abilita ANC con un solo AirPod
+(Maggiore riduzione rumore, ma consuma più batteria)</translation>
+    </message>
+    <message>
+        <source>Bluetooth Retry Attempts:</source>
+        <translation>Tentativi riprova Bluetooth:</translation>
+    </message>
+    <message>
+        <source>Rename</source>
+        <translation>Rinomina</translation>
+    </message>
+    <message>
+        <source>Change Phone MAC</source>
+        <translation>Cambia MAC Telefono</translation>
+    </message>
+    <message>
+        <source>Show Magic Cloud Keys QR</source>
+        <translation>Mostra QR Magic Cloud Keys</translation>
+    </message>
+</context>
+<context>
+    <name>TrayIconManager</name>
+    <message>
+        <source>Battery Status: </source>
+        <translation>Stato batteria: </translation>
+    </message>
+    <message>
+        <source>Open</source>
+        <translation>Apri</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Impostazioni</translation>
+    </message>
+    <message>
+        <source>Toggle Conversational Awareness</source>
+        <translation>Attiva/Disattiva Rilevamento conversazione</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Adattivo</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Trasparenza</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Cancellazione rumore</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Non attivo</translation>
+    </message>
+    <message>
+        <source>Quit</source>
+        <translation>Esci</translation>
+    </message>
+</context>
+<context>
+    <name>AirPodsTrayApp</name>
+    <message>
+        <source>AirPods Disconnected</source>
+        <translation>AirPods disconnesse</translation>
+    </message>
+    <message>
+        <source>Your AirPods have been disconnected</source>
+        <translation>Le tue AirPods sono state disconnesse</translation>
+    </message>
+</context>
+</TS>

linux/translations/librepods_tr.ts

@@ -0,0 +1,151 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="tr_TR">
+<context>
+    <name>Main</name>
+    <message>
+        <source>Connected</source>
+        <translation>Bağlı</translation>
+    </message>
+    <message>
+        <source>Disconnected</source>
+        <translation>Bağlantı Kesildi</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Kapalı</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Gürültü Engelleme</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Şeffaflık</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Uyarlanabilir</translation>
+    </message>
+    <message>
+        <source>Adaptive Noise Level: </source>
+        <translation>Uyarlanabilir Gürültü Seviyesi: </translation>
+    </message>
+    <message>
+        <source>Conversational Awareness</source>
+        <translation>Konuşma Farkındalığı</translation>
+    </message>
+    <message>
+        <source>Hearing Aid</source>
+        <translation>İşitme Cihazı</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Ayarlar</translation>
+    </message>
+    <message>
+        <source>Pause Behavior When Removing AirPods:</source>
+        <translation>AirPods Çıkarıldığında Duraklatma Davranışı:</translation>
+    </message>
+    <message>
+        <source>One Removed</source>
+        <translation>Biri Çıkarıldığında</translation>
+    </message>
+    <message>
+        <source>Both Removed</source>
+        <translation>İkisi de Çıkarıldığında</translation>
+    </message>
+    <message>
+        <source>Never</source>
+        <translation>Asla</translation>
+    </message>
+    <message>
+        <source>Cross-Device Connectivity with Android</source>
+        <translation>Android ile Çapraz Cihaz Bağlantısı</translation>
+    </message>
+    <message>
+        <source>Auto-Start on Login</source>
+        <translation>Oturum Açıldığında Otomatik Başlat</translation>
+    </message>
+    <message>
+        <source>Enable System Notifications</source>
+        <translation>Sistem Bildirimlerini Etkinleştir</translation>
+    </message>
+    <message>
+        <source>One Bud ANC Mode</source>
+        <translation>Tek Kulaklık ANC Modu</translation>
+    </message>
+    <message>
+        <source>Enable ANC when using one AirPod
+(More noise reduction, but uses more battery)</source>
+        <translation>Tek AirPod kullanırken ANC&apos;yi etkinleştir
+(Daha fazla gürültü azaltma, ancak daha fazla pil kullanır)</translation>
+    </message>
+    <message>
+        <source>Bluetooth Retry Attempts:</source>
+        <translation>Bluetooth Yeniden Deneme Sayısı:</translation>
+    </message>
+    <message>
+        <source>Rename</source>
+        <translation>Yeniden Adlandır</translation>
+    </message>
+    <message>
+        <source>Change Phone MAC</source>
+        <translation>Telefon MAC Adresini Değiştir</translation>
+    </message>
+    <message>
+        <source>Show Magic Cloud Keys QR</source>
+        <translation>Magic Cloud Anahtarları QR&apos;ını Göster</translation>
+    </message>
+</context>
+<context>
+    <name>TrayIconManager</name>
+    <message>
+        <source>Battery Status: </source>
+        <translation>Pil Durumu: </translation>
+    </message>
+    <message>
+        <source>Open</source>
+        <translation>Aç</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Ayarlar</translation>
+    </message>
+    <message>
+        <source>Toggle Conversational Awareness</source>
+        <translation>Konuşma Farkındalığını Aç/Kapat</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Uyarlanabilir</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Şeffaflık</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Gürültü Engelleme</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Kapalı</translation>
+    </message>
+    <message>
+        <source>Quit</source>
+        <translation>Çıkış</translation>
+    </message>
+</context>
+<context>
+    <name>AirPodsTrayApp</name>
+    <message>
+        <source>AirPods Disconnected</source>
+        <translation>AirPods Bağlantısı Kesildi</translation>
+    </message>
+    <message>
+        <source>Your AirPods have been disconnected</source>
+        <translation>AirPods&apos;unuzun bağlantısı kesildi</translation>
+    </message>
+</context>
+</TS>

linux/translations/librepods_zh_TW.ts

@@ -0,0 +1,151 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="zh_TW">
+<context>
+    <name>Main</name>
+    <message>
+        <source>Connected</source>
+        <translation>已連線</translation>
+    </message>
+    <message>
+        <source>Disconnected</source>
+        <translation>已中斷連線</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>關閉</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>降噪</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>通透模式</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>自適應</translation>
+    </message>
+    <message>
+        <source>Adaptive Noise Level: </source>
+        <translation>自適應噪音等級： </translation>
+    </message>
+    <message>
+        <source>Conversational Awareness</source>
+        <translation>對話感知</translation>
+    </message>
+    <message>
+        <source>Hearing Aid</source>
+        <translation>助聽器</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>設定</translation>
+    </message>
+    <message>
+        <source>Pause Behavior When Removing AirPods:</source>
+        <translation>取下 AirPods 時的暫停行為：</translation>
+    </message>
+    <message>
+        <source>One Removed</source>
+        <translation>取下其中一只時</translation>
+    </message>
+    <message>
+        <source>Both Removed</source>
+        <translation>兩只都取下時</translation>
+    </message>
+    <message>
+        <source>Never</source>
+        <translation>永不</translation>
+    </message>
+    <message>
+        <source>Cross-Device Connectivity with Android</source>
+        <translation>與 Android 的跨裝置連線</translation>
+    </message>
+    <message>
+        <source>Auto-Start on Login</source>
+        <translation>登入時自動啟動</translation>
+    </message>
+    <message>
+        <source>Enable System Notifications</source>
+        <translation>啟用系統通知</translation>
+    </message>
+    <message>
+        <source>One Bud ANC Mode</source>
+        <translation>單耳 ANC 模式</translation>
+    </message>
+    <message>
+        <source>Enable ANC when using one AirPod
+(More noise reduction, but uses more battery)</source>
+        <translation>使用一只 AirPod 時啟用 ANC
+（更多降噪效果，但更耗電）</translation>
+    </message>
+    <message>
+        <source>Bluetooth Retry Attempts:</source>
+        <translation>Bluetooth 重試次數：</translation>
+    </message>
+    <message>
+        <source>Rename</source>
+        <translation>重新命名</translation>
+    </message>
+    <message>
+        <source>Change Phone MAC</source>
+        <translation>變更手機 MAC 位址</translation>
+    </message>
+    <message>
+        <source>Show Magic Cloud Keys QR</source>
+        <translation>顯示 Magic Cloud Key QR 碼</translation>
+    </message>
+</context>
+<context>
+    <name>TrayIconManager</name>
+    <message>
+        <source>Battery Status: </source>
+        <translation>電池狀態： </translation>
+    </message>
+    <message>
+        <source>Open</source>
+        <translation>開啟</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>設定</translation>
+    </message>
+    <message>
+        <source>Toggle Conversational Awareness</source>
+        <translation>切換對話感知</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>自適應</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>通透模式</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>降噪</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>關閉</translation>
+    </message>
+    <message>
+        <source>Quit</source>
+        <translation>結束</translation>
+    </message>
+</context>
+<context>
+    <name>AirPodsTrayApp</name>
+    <message>
+        <source>AirPods Disconnected</source>
+        <translation>AirPods 已中斷連線</translation>
+    </message>
+    <message>
+        <source>Your AirPods have been disconnected</source>
+        <translation>你的 AirPods 已中斷連線</translation>
+    </message>
+</context>
+</TS>

linux/trayiconmanager.cpp

@@ -36,7 +36,7 @@ void TrayIconManager::showNotification(const QString &title, const QString &mess
 
 void TrayIconManager::TrayIconManager::updateBatteryStatus(const QString &status)
 {
-    trayIcon->setToolTip("Battery Status: " + status);
+    trayIcon->setToolTip(tr("Battery Status: ") + status);
     updateIconFromBattery(status);
 }
 
@@ -57,20 +57,20 @@ void TrayIconManager::updateConversationalAwareness(bool enabled)
 void TrayIconManager::setupMenuActions()
 {
     // Open action
-    QAction *openAction = new QAction("Open", trayMenu);
+    QAction *openAction = new QAction(tr("Open"), trayMenu);
     trayMenu->addAction(openAction);
     connect(openAction, &QAction::triggered, qApp, [this](){emit openApp();});
 
     // Settings Menu
 
-    QAction *settingsMenu = new QAction("Settings", trayMenu);
+    QAction *settingsMenu = new QAction(tr("Settings"), trayMenu);
     trayMenu->addAction(settingsMenu);
     connect(settingsMenu, &QAction::triggered, qApp, [this](){emit openSettings();});
 
     trayMenu->addSeparator();
 
     // Conversational Awareness Toggle
-    caToggleAction = new QAction("Toggle Conversational Awareness", trayMenu);
+    caToggleAction = new QAction(tr("Toggle Conversational Awareness"), trayMenu);
     caToggleAction->setCheckable(true);
     trayMenu->addAction(caToggleAction);
     connect(caToggleAction, &QAction::triggered, this, [this](bool checked)
@@ -81,10 +81,10 @@ void TrayIconManager::setupMenuActions()
     // Noise Control Options
     noiseControlGroup = new QActionGroup(trayMenu);
     const QPair<QString, NoiseControlMode> noiseOptions[] = {
-        {"Adaptive", NoiseControlMode::Adaptive},
-        {"Transparency", NoiseControlMode::Transparency},
-        {"Noise Cancellation", NoiseControlMode::NoiseCancellation},
-        {"Off", NoiseControlMode::Off}};
+        {tr("Adaptive"), NoiseControlMode::Adaptive},
+        {tr("Transparency"), NoiseControlMode::Transparency},
+        {tr("Noise Cancellation"), NoiseControlMode::NoiseCancellation},
+        {tr("Off"), NoiseControlMode::Off}};
 
     for (auto option : noiseOptions)
     {
@@ -100,7 +100,7 @@ void TrayIconManager::setupMenuActions()
     trayMenu->addSeparator();
 
     // Quit action
-    QAction *quitAction = new QAction("Quit", trayMenu);
+    QAction *quitAction = new QAction(tr("Quit"), trayMenu);
     trayMenu->addAction(quitAction);
     connect(quitAction, &QAction::triggered, qApp, &QApplication::quit);
 }