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add: GrapheneOS support (PerformanC#53)
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This commit adds support for devices that run GrapheneOS by hooking on JNI methods they renamed.

Signed-off-by: Md Arif <[email protected]>
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@sabamdarif
sabamdarif authored Dec 7, 2024
1 parent 6cb8f30 commit 060a1f3
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Showing 2 changed files with 75 additions and 3 deletions.
19 changes: 16 additions & 3 deletions loader/src/injector/gen_jni_hooks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,7 @@ def ind(i):
jstring = JType('jstring', 'Ljava/lang/String;')
jboolean = JType('jboolean', 'Z')
jlong = JType('jlong', 'J')
jlongArray = JArray(jlong)
void = JType('void', 'V')

class ForkAndSpec(JNIHook):
Expand Down Expand Up @@ -210,6 +211,18 @@ def init_args(self):
server_samsung_q = ForkServer('samsung_q', [uid, gid, gids, runtime_flags, Anon(jint), Anon(jint), rlimits,
permitted_capabilities, effective_capabilities])

# GrapheneOS Android 14 Support
server_grapheneos_u = ForkServer('grapheneos_u', [uid, gid, gids, runtime_flags, Anon(jint), Anon(jint), rlimits,
permitted_capabilities, effective_capabilities])

fas_grapheneos_u = ForkAndSpec('grapheneos_u', [uid, gid, gids, runtime_flags, rlimits, mount_external,
se_info, nice_name, fds_to_close, fds_to_ignore, 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, mount_sysprop_overrides, Anon(jlongArray)])

spec_grapheneos_u = SpecApp('grapheneos_u', [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, mount_sysprop_overrides, Anon(jlongArray)])

hook_map = {}

def gen_jni_def(clz, methods):
Expand Down Expand Up @@ -245,13 +258,13 @@ def gen_jni_def(clz, methods):

zygote = 'com/android/internal/os/Zygote'

methods = [fas_l, fas_o, fas_p, fas_q_alt, fas_r, fas_u, fas_samsung_m, fas_samsung_n, fas_samsung_o, fas_samsung_p]
methods = [fas_l, fas_o, fas_p, fas_q_alt, fas_r, fas_u, fas_samsung_m, fas_samsung_n, fas_samsung_o, fas_samsung_p, fas_grapheneos_u]
f.write(gen_jni_def(zygote, methods))

methods = [spec_q, spec_q_alt, spec_r, spec_u, spec_samsung_q]
methods = [spec_q, spec_q_alt, spec_r, spec_u, spec_samsung_q, spec_grapheneos_u]
f.write(gen_jni_def(zygote, methods))

methods = [server_l, server_samsung_q]
methods = [server_l, server_samsung_q, server_grapheneos_u]
f.write(gen_jni_def(zygote, methods))

f.write('\n} // namespace\n')
Expand Down
59 changes: 59 additions & 0 deletions loader/src/injector/jni_hooks.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -127,6 +127,24 @@ void *nativeForkAndSpecialize_orig = nullptr;
ctx.nativeForkAndSpecialize_post();
return ctx.pid;
}
[[clang::no_stack_protector]] jint nativeForkAndSpecialize_grapheneos_u(JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags, jobjectArray rlimits, jint mount_external, jstring se_info, jstring nice_name, jintArray fds_to_close, jintArray fds_to_ignore, 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, jboolean mount_sysprop_overrides, jlongArray _15) {
AppSpecializeArgs_v5 args(uid, gid, gids, runtime_flags, rlimits, mount_external, se_info, nice_name, instruction_set, app_data_dir);
args.fds_to_ignore = &fds_to_ignore;
args.is_child_zygote = &is_child_zygote;
args.is_top_app = &is_top_app;
args.pkg_data_info_list = &pkg_data_info_list;
args.whitelisted_data_info_list = &whitelisted_data_info_list;
args.mount_data_dirs = &mount_data_dirs;
args.mount_storage_dirs = &mount_storage_dirs;
args.mount_sysprop_overrides = &mount_sysprop_overrides;
ZygiskContext ctx(env, &args);
ctx.nativeForkAndSpecialize_pre();
reinterpret_cast<decltype(&nativeForkAndSpecialize_grapheneos_u)>(nativeForkAndSpecialize_orig)(
env, clazz, uid, gid, gids, runtime_flags, rlimits, mount_external, se_info, nice_name, fds_to_close, fds_to_ignore, 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, mount_sysprop_overrides, _15
);
ctx.nativeForkAndSpecialize_post();
return ctx.pid;
}
std::array nativeForkAndSpecialize_methods = {
JNINativeMethod {
"nativeForkAndSpecialize",
Expand Down Expand Up @@ -178,6 +196,11 @@ std::array nativeForkAndSpecialize_methods = {
"(II[II[[IILjava/lang/String;IILjava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;)I",
(void *) &nativeForkAndSpecialize_samsung_p
},
JNINativeMethod {
"nativeForkAndSpecialize",
"(II[II[[IILjava/lang/String;Ljava/lang/String;[I[IZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;[Ljava/lang/String;ZZZ[J)I",
(void *) &nativeForkAndSpecialize_grapheneos_u
},
};

void *nativeSpecializeAppProcess_orig = nullptr;
Expand Down Expand Up @@ -243,6 +266,22 @@ void *nativeSpecializeAppProcess_orig = nullptr;
);
ctx.nativeSpecializeAppProcess_post();
}
[[clang::no_stack_protector]] void nativeSpecializeAppProcess_grapheneos_u(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, jboolean mount_sysprop_overrides, jlongArray _16) {
AppSpecializeArgs_v5 args(uid, gid, gids, runtime_flags, rlimits, mount_external, se_info, nice_name, instruction_set, app_data_dir);
args.is_child_zygote = &is_child_zygote;
args.is_top_app = &is_top_app;
args.pkg_data_info_list = &pkg_data_info_list;
args.whitelisted_data_info_list = &whitelisted_data_info_list;
args.mount_data_dirs = &mount_data_dirs;
args.mount_storage_dirs = &mount_storage_dirs;
args.mount_sysprop_overrides = &mount_sysprop_overrides;
ZygiskContext ctx(env, &args);
ctx.nativeSpecializeAppProcess_pre();
reinterpret_cast<decltype(&nativeSpecializeAppProcess_grapheneos_u)>(nativeSpecializeAppProcess_orig)(
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, mount_sysprop_overrides, _16
);
ctx.nativeSpecializeAppProcess_post();
}
std::array nativeSpecializeAppProcess_methods = {
JNINativeMethod {
"nativeSpecializeAppProcess",
Expand All @@ -269,6 +308,11 @@ std::array nativeSpecializeAppProcess_methods = {
"(II[II[[IILjava/lang/String;IILjava/lang/String;ZLjava/lang/String;Ljava/lang/String;)V",
(void *) &nativeSpecializeAppProcess_samsung_q
},
JNINativeMethod {
"nativeSpecializeAppProcess",
"(II[II[[IILjava/lang/String;Ljava/lang/String;ZLjava/lang/String;Ljava/lang/String;Z[Ljava/lang/String;[Ljava/lang/String;ZZZ[J)V",
(void *) &nativeSpecializeAppProcess_grapheneos_u
},
};

void *nativeForkSystemServer_orig = nullptr;
Expand All @@ -292,6 +336,16 @@ void *nativeForkSystemServer_orig = nullptr;
ctx.nativeForkSystemServer_post();
return ctx.pid;
}
[[clang::no_stack_protector]] jint nativeForkSystemServer_grapheneos_u(JNIEnv *env, jclass clazz, jint uid, jint gid, jintArray gids, jint runtime_flags, jint _13, jint _14, jobjectArray rlimits, jlong permitted_capabilities, jlong effective_capabilities) {
ServerSpecializeArgs_v1 args(uid, gid, gids, runtime_flags, permitted_capabilities, effective_capabilities);
ZygiskContext ctx(env, &args);
ctx.nativeForkSystemServer_pre();
reinterpret_cast<decltype(&nativeForkSystemServer_grapheneos_u)>(nativeForkSystemServer_orig)(
env, clazz, uid, gid, gids, runtime_flags, _13, _14, rlimits, permitted_capabilities, effective_capabilities
);
ctx.nativeForkSystemServer_post();
return ctx.pid;
}
std::array nativeForkSystemServer_methods = {
JNINativeMethod {
"nativeForkSystemServer",
Expand All @@ -303,6 +357,11 @@ std::array nativeForkSystemServer_methods = {
"(II[IIII[[IJJ)I",
(void *) &nativeForkSystemServer_samsung_q
},
JNINativeMethod {
"nativeForkSystemServer",
"(II[IIII[[IJJ)I",
(void *) &nativeForkSystemServer_grapheneos_u
},
};

} // namespace
Expand Down

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