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Refactor hook.cpp

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topjohnwu
2021-08-19 01:54:12 -07:00
parent 9b3efffba9
commit 6f9c3c4ff3
5 changed files with 219 additions and 168 deletions
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14
native/jni/zygisk/gen_jni_hooks.py
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@@ -128,7 +128,7 @@ spec_r = Method('r', [uid, gid, gids, runtime_flags, rlimits, mount_external, se
spec_samsung_q = Method('samsung_q', [uid, gid, gids, runtime_flags, rlimits, mount_external,
se_info, i1, i2, nice_name, is_child_zygote, instruction_set, app_data_dir])
server_m = Method('m', [uid, gid, gids, runtime_flags, rlimits,
server_l = Method('l', [uid, gid, gids, runtime_flags, rlimits,
permitted_capabilities, effective_capabilities])
server_samsung_q = Method('samsung_q', [uid, gid, gids, runtime_flags, i1, i2, rlimits,
@@ -151,7 +151,6 @@ def gen_definitions(methods, base_name):
for m in methods:
func_name = f'{base_name}_{m.name}'
decl += ind(0) + f'{cpp_ret} {func_name}(JNIEnv *env, jclass clazz, {m.cpp()}) {{'
decl += ind(1) + 'HookContext ctx{};'
if base_name == 'nativeForkSystemServer':
decl += ind(1) + 'ForkSystemServerArgs args(uid, gid, gids, runtime_flags, permitted_capabilities, effective_capabilities);'
else:
@@ -159,12 +158,15 @@ def gen_definitions(methods, base_name):
for a in m.args:
if a.set_arg:
decl += ind(1) + f'args.{a.name} = &{a.name};'
decl += ind(1) + 'HookContext ctx;'
decl += ind(1) + 'ctx.env = env;'
decl += ind(1) + 'ctx.clazz = clazz;'
decl += ind(1) + 'ctx.raw_args = &args;'
decl += ind(1) + f'{base_name}_pre(&ctx, env, clazz);'
decl += ind(1) + f'reinterpret_cast<decltype(&{func_name})>({base_name}_orig)('
decl += ind(1) + f'ctx.{base_name}_pre();'
decl += ind(1) + f'reinterpret_cast<decltype(&{func_name})>(HookContext::{base_name}_orig)('
decl += ind(2) + f'env, clazz, {m.name_list()}'
decl += ind(1) + ');'
decl += ind(1) + f'{base_name}_post(&ctx, env, clazz);'
decl += ind(1) + f'ctx.{base_name}_post();'
decl += ret_stat
decl += ind(0) + '}'
@@ -189,7 +191,7 @@ def gen_spec():
return gen_definitions(methods, 'nativeSpecializeAppProcess')
def gen_server():
methods = [server_m, server_samsung_q]
methods = [server_l, server_samsung_q]
return gen_definitions(methods, 'nativeForkSystemServer')
with open('jni_hooks.hpp', 'w') as f: