mirror of
https://github.com/topjohnwu/Magisk.git
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Update pre/post hooks implementation
This commit is contained in:
topjohnwu
399
native/jni/inject/jni_hooks.hpp
Normal file
399
native/jni/inject/jni_hooks.hpp
Normal file
@@ -0,0 +1,399 @@
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/*
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* Original code: https://github.com/RikkaApps/Riru/blob/master/riru/src/main/cpp/jni_native_method.cpp
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* The code is modified and sublicensed to GPLv3 for incorporating into Magisk.
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*
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* Copyright (c) 2018-2021, RikkaW
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* Copyright (c) 2021, John 'topjohnwu' Wu
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*/
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#define ENABLE_LEGACY_DP 1 // Nobody should use outdated developer preview...
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// All possible missing arguments
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static union {
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struct {
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jintArray fds_to_ignore;
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jboolean is_child_zygote;
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jboolean is_top_app;
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jobjectArray pkg_data_info_list;
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jobjectArray whitelisted_data_info_list;
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jboolean mount_data_dirs;
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jboolean mount_storage_dirs;
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};
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size_t args_buf[8]; // Easy access to wipe all variables at once
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};
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#define DCL_JNI(ret, name, sig, ...) \
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const static char name##_sig[] = sig; \
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static ret name(__VA_ARGS__)
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// -----------------------------------------------------------------
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#define pre_fork() \
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HookContext ctx{}; \
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memset(args_buf, 0, sizeof(args_buf)); \
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nativeForkAndSpecialize_pre(&ctx, env, clazz, uid, gid, gids, runtime_flags, \
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rlimits, mount_external, se_info, nice_name, fds_to_close, fds_to_ignore, is_child_zygote, \
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instruction_set, app_data_dir, is_top_app, pkg_data_info_list, whitelisted_data_info_list, \
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mount_data_dirs, mount_storage_dirs)
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#define orig_fork(ver, ...) \
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ctx.pid = reinterpret_cast<decltype(&nativeForkAndSpecialize_##ver)> \
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(JNI::Zygote::nativeForkAndSpecialize_orig->fnPtr)(__VA_ARGS__)
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#define post_fork() \
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nativeForkAndSpecialize_post(&ctx, env, clazz); \
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return ctx.pid
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#define DCL_FORK_AND_SPECIALIZE(ver, sig, ...) \
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DCL_JNI(jint, nativeForkAndSpecialize_##ver, sig, __VA_ARGS__)
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DCL_FORK_AND_SPECIALIZE(m,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[ILjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jstring instruction_set, jstring app_data_dir) {
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pre_fork();
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orig_fork(m, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, nice_name, fds_to_close, instruction_set, app_data_dir);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(o,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[ILjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jstring instruction_set, jstring app_data_dir) {
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pre_fork();
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orig_fork(o, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, nice_name, fds_to_close, fds_to_ignore, instruction_set, app_data_dir);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(p,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir) {
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pre_fork();
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orig_fork(p, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, fds_to_close, fds_to_ignore, is_child_zygote, instruction_set, app_data_dir);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(q_alt,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;Z)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir, jboolean is_top_app) {
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pre_fork();
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orig_fork(q_alt, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, fds_to_close, fds_to_ignore, is_child_zygote, instruction_set, app_data_dir, is_top_app);
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post_fork();
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}
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#if ENABLE_LEGACY_DP
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DCL_FORK_AND_SPECIALIZE(r_dp2,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir, jboolean is_top_app, jobjectArray pkg_data_info_list) {
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pre_fork();
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orig_fork(r_dp2, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, fds_to_close, fds_to_ignore, is_child_zygote, instruction_set, app_data_dir,
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is_top_app, pkg_data_info_list);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(r_dp3,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;Z)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir, jboolean is_top_app, jobjectArray pkg_data_info_list,
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jboolean mount_storage_dirs) {
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pre_fork();
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orig_fork(r_dp3, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, nice_name, fds_to_close, fds_to_ignore, is_child_zygote, instruction_set,
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app_data_dir, is_top_app, pkg_data_info_list, mount_storage_dirs);
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post_fork();
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}
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#endif // ENABLE_LEGACY_DP
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DCL_FORK_AND_SPECIALIZE(r,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;[Ljava/lang/String;ZZ)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir, jboolean is_top_app, jobjectArray pkg_data_info_list,
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jobjectArray whitelisted_data_info_list, jboolean mount_data_dirs, jboolean mount_storage_dirs) {
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pre_fork();
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orig_fork(r, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, fds_to_close, fds_to_ignore, is_child_zygote, instruction_set, app_data_dir, is_top_app,
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pkg_data_info_list, whitelisted_data_info_list, mount_data_dirs, mount_storage_dirs);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(samsung_m,
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"(II[II[[IILjava/lang/String;IILjava/lang/String;[ILjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jint category, jint accessInfo,
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jstring nice_name, jintArray fds_to_close, jstring instruction_set, jstring app_data_dir) {
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pre_fork();
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orig_fork(samsung_m, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, category, accessInfo, nice_name, fds_to_close, instruction_set, app_data_dir);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(samsung_n,
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"(II[II[[IILjava/lang/String;IILjava/lang/String;[ILjava/lang/String;Ljava/lang/String;I)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jint category, jint accessInfo,
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jstring nice_name, jintArray fds_to_close, jstring instruction_set, jstring app_data_dir, jint a1) {
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pre_fork();
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orig_fork(samsung_n, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, category, accessInfo, nice_name, fds_to_close, instruction_set, app_data_dir, a1);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(samsung_o,
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"(II[II[[IILjava/lang/String;IILjava/lang/String;[I[ILjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jint category, jint accessInfo,
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jstring nice_name, jintArray fds_to_close, jintArray fds_to_ignore, jstring instruction_set,
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jstring app_data_dir) {
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pre_fork();
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orig_fork(samsung_o, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, category, accessInfo, nice_name, fds_to_close, fds_to_ignore,
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instruction_set, app_data_dir);
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post_fork();
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}
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DCL_FORK_AND_SPECIALIZE(samsung_p,
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"(II[II[[IILjava/lang/String;IILjava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;)I",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jint category, jint accessInfo,
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jstring nice_name, jintArray fds_to_close, jintArray fds_to_ignore, jboolean is_child_zygote,
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jstring instruction_set, jstring app_data_dir) {
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pre_fork();
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orig_fork(samsung_p, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
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se_info, category, accessInfo, nice_name, fds_to_close, fds_to_ignore, is_child_zygote,
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instruction_set, app_data_dir);
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post_fork();
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}
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#define DCL_FORK(ver) { \
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"nativeForkAndSpecialize", \
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nativeForkAndSpecialize_##ver##_sig, \
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(void *) &nativeForkAndSpecialize_##ver \
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}
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// -----------------------------------------------------------------
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#define pre_spec() \
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HookContext ctx{}; \
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memset(args_buf, 0, sizeof(args_buf)); \
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nativeSpecializeAppProcess_pre(&ctx, \
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env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info, nice_name, \
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is_child_zygote, instruction_set, app_data_dir, is_top_app, pkg_data_info_list, \
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whitelisted_data_info_list, mount_data_dirs, mount_storage_dirs)
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#define orig_spec(ver, ...) \
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reinterpret_cast<decltype(&nativeSpecializeAppProcess_##ver)> \
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(JNI::Zygote::nativeSpecializeAppProcess_orig->fnPtr)(__VA_ARGS__)
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#define post_spec() \
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nativeSpecializeAppProcess_post(&ctx, env, clazz)
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#define DCL_SPECIALIZE_APP(ver, sig, ...) \
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DCL_JNI(void, nativeSpecializeAppProcess_##ver, sig, __VA_ARGS__)
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DCL_SPECIALIZE_APP(q,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;)V",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir) {
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pre_spec();
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orig_spec(q, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, is_child_zygote, instruction_set, app_data_dir);
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post_spec();
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}
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DCL_SPECIALIZE_APP(q_alt,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;Z)V",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir,
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jboolean is_top_app) {
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pre_spec();
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orig_spec(q_alt, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, is_child_zygote, instruction_set, app_data_dir, is_top_app);
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post_spec();
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}
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#if ENABLE_LEGACY_DP
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DCL_SPECIALIZE_APP(r_dp2,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;)V",
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
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jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
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jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir,
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jboolean is_top_app, jobjectArray pkg_data_info_list) {
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pre_spec();
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orig_spec(r_dp2, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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nice_name, is_child_zygote, instruction_set, app_data_dir, is_top_app, pkg_data_info_list);
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post_spec();
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}
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DCL_SPECIALIZE_APP(r_dp3,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;Z)V",
|
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JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
|
||||
jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
|
||||
jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir,
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||||
jboolean is_top_app, jobjectArray pkg_data_info_list, jboolean mount_storage_dirs) {
|
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pre_spec();
|
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orig_spec(r_dp3, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info,
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||||
nice_name, is_child_zygote, instruction_set, app_data_dir, is_top_app, pkg_data_info_list,
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mount_storage_dirs);
|
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post_spec();
|
||||
}
|
||||
#endif // ENABLE_LEGACY_DP
|
||||
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DCL_SPECIALIZE_APP(r,
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"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;[Ljava/lang/String;ZZ)V",
|
||||
JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
|
||||
jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name,
|
||||
jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir,
|
||||
jboolean is_top_app, jobjectArray pkg_data_info_list, jobjectArray whitelisted_data_info_list,
|
||||
jboolean mount_data_dirs, jboolean mount_storage_dirs) {
|
||||
pre_spec();
|
||||
orig_spec(r, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info, nice_name,
|
||||
is_child_zygote, instruction_set, app_data_dir, is_top_app, pkg_data_info_list,
|
||||
whitelisted_data_info_list, mount_data_dirs, mount_storage_dirs);
|
||||
post_spec();
|
||||
}
|
||||
|
||||
DCL_SPECIALIZE_APP(samsung_q,
|
||||
"(II[II[[IILjava/lang/String;IILjava/lang/String;ZLjava/lang/String;Ljava/lang/String;)V",
|
||||
JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags,
|
||||
jobjectArray rlimits, jint mount_external, jstring se_info, jint space, jint accessInfo,
|
||||
jstring nice_name, jboolean is_child_zygote, jstring instruction_set, jstring app_data_dir) {
|
||||
pre_spec();
|
||||
orig_spec(samsung_q, env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external,
|
||||
se_info, space, accessInfo, nice_name, is_child_zygote, instruction_set, app_data_dir);
|
||||
post_spec();
|
||||
}
|
||||
|
||||
#define DCL_SPEC(ver) { \
|
||||
"nativeSpecializeAppProcess", \
|
||||
nativeSpecializeAppProcess_##ver##_sig, \
|
||||
(void *) &nativeSpecializeAppProcess_##ver \
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------
|
||||
|
||||
#define pre_server() \
|
||||
HookContext ctx{}; \
|
||||
memset(args_buf, 0, sizeof(args_buf)); \
|
||||
nativeForkSystemServer_pre(&ctx, env, clazz, uid, gid, gids, runtime_flags, \
|
||||
rlimits, permitted_capabilities, effective_capabilities)
|
||||
|
||||
#define orig_server(ver, ...) \
|
||||
ctx.pid = reinterpret_cast<decltype(&nativeForkSystemServer_##ver)> \
|
||||
(JNI::Zygote::nativeForkSystemServer_orig->fnPtr)(__VA_ARGS__)
|
||||
|
||||
#define post_server() \
|
||||
nativeForkSystemServer_post(&ctx, env, clazz); \
|
||||
return ctx.pid
|
||||
|
||||
#define DCL_FORK_SERVER(ver, sig, ...) \
|
||||
DCL_JNI(jint, nativeForkSystemServer_##ver, sig, __VA_ARGS__)
|
||||
|
||||
DCL_FORK_SERVER(m, "(II[II[[IJJ)I",
|
||||
JNIEnv *env, jclass clazz, uid_t uid, gid_t gid, jintArray gids, jint runtime_flags,
|
||||
jobjectArray rlimits, jlong permitted_capabilities, jlong effective_capabilities) {
|
||||
pre_server();
|
||||
orig_server(m, env, clazz, uid, gid, gids, runtime_flags, rlimits, permitted_capabilities,
|
||||
effective_capabilities);
|
||||
post_server();
|
||||
}
|
||||
|
||||
DCL_FORK_SERVER(samsung_q, "(II[IIII[[IJJ)I",
|
||||
JNIEnv *env, jclass clazz, uid_t uid, gid_t gid, jintArray gids, jint runtime_flags,
|
||||
jint space, jint accessInfo, jobjectArray rlimits, jlong permitted_capabilities,
|
||||
jlong effective_capabilities) {
|
||||
pre_server();
|
||||
orig_server(samsung_q, env, clazz, uid, gid, gids, runtime_flags, space, accessInfo, rlimits,
|
||||
permitted_capabilities, effective_capabilities);
|
||||
post_server();
|
||||
}
|
||||
|
||||
#define DCL_SERVER(ver) { \
|
||||
"nativeForkSystemServer", \
|
||||
nativeForkSystemServer_##ver##_sig, \
|
||||
(void *) &nativeForkSystemServer_##ver \
|
||||
}
|
||||
|
||||
/*
|
||||
* On Android 9+, in very rare cases, SystemProperties.set("sys.user." + userId + ".ce_available", "true")
|
||||
* will throw an exception (no idea if this is caused by hooking) and user data will be wiped.
|
||||
* Hook it and clear the exception to prevent this problem from happening.
|
||||
*
|
||||
* https://cs.android.com/android/platform/superproject/+/android-9.0.0_r34:frameworks/base/services/core/java/com/android/server/pm/UserDataPreparer.java;l=107;bpv=0;bpt=0
|
||||
*/
|
||||
static void SystemProperties_set(JNIEnv *env, jobject clazz, jstring keyJ, jstring valJ) {
|
||||
const char *key = env->GetStringUTFChars(keyJ, JNI_FALSE);
|
||||
char user[16];
|
||||
bool no_throw = sscanf(key, "sys.user.%[^.].ce_available", user) == 1;
|
||||
env->ReleaseStringUTFChars(keyJ, key);
|
||||
|
||||
reinterpret_cast<decltype(&SystemProperties_set)>
|
||||
(JNI::SystemProperties::native_set_orig->fnPtr)(env, clazz, keyJ, valJ);
|
||||
|
||||
jthrowable exception = env->ExceptionOccurred();
|
||||
if (exception && no_throw) {
|
||||
LOGW("prevented data destroy");
|
||||
|
||||
env->ExceptionDescribe();
|
||||
env->ExceptionClear();
|
||||
}
|
||||
}
|
||||
|
||||
namespace JNI {
|
||||
|
||||
namespace Zygote {
|
||||
const JNINativeMethod nativeForkAndSpecialize_methods[] = {
|
||||
DCL_FORK(m), DCL_FORK(o), DCL_FORK(p),
|
||||
DCL_FORK(q_alt), DCL_FORK(r),
|
||||
DCL_FORK(samsung_m), DCL_FORK(samsung_n),
|
||||
DCL_FORK(samsung_o), DCL_FORK(samsung_p),
|
||||
#if ENABLE_LEGACY_DP
|
||||
DCL_FORK(r_dp2), DCL_FORK(r_dp3)
|
||||
#endif
|
||||
};
|
||||
const int nativeForkAndSpecialize_methods_num = std::size(nativeForkAndSpecialize_methods);
|
||||
|
||||
const JNINativeMethod nativeSpecializeAppProcess_methods[] = {
|
||||
DCL_SPEC(q), DCL_SPEC(q_alt),
|
||||
DCL_SPEC(r), DCL_SPEC(samsung_q),
|
||||
#if ENABLE_LEGACY_DP
|
||||
DCL_SPEC(r_dp2), DCL_SPEC(r_dp3)
|
||||
#endif
|
||||
};
|
||||
const int nativeSpecializeAppProcess_methods_num = std::size(nativeSpecializeAppProcess_methods);
|
||||
|
||||
const JNINativeMethod nativeForkSystemServer_methods[] = {
|
||||
DCL_SERVER(m), DCL_SERVER(samsung_q)
|
||||
};
|
||||
const int nativeForkSystemServer_methods_num = std::size(nativeForkSystemServer_methods);
|
||||
}
|
||||
|
||||
namespace SystemProperties {
|
||||
const JNINativeMethod native_set_methods[] = {{
|
||||
"native_set",
|
||||
"(Ljava/lang/String;Ljava/lang/String;)V",
|
||||
(void *) &SystemProperties_set
|
||||
}};
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user