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Add inode plt hook APIs

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This commit is contained in:
LoveSy
2022-11-21 16:59:22 +08:00
committed by John Wu
parent e38f35eab2
commit aa0a2f77cf
30 changed files with 176 additions and 4745 deletions
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native/src/zygisk/api.hpp
+16
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@@ -236,6 +236,14 @@ struct Api {
// If `symbol` is nullptr, then all symbols will be excluded.
void pltHookExclude(const char *regex, const char *symbol);
// For ELFs loaded in memory matching `inode`, replace function `symbol` with `newFunc`.
// If `oldFunc` is not nullptr, the original function pointer will be saved to `oldFunc`.
void pltHookRegisterInode(ino_t inode, const char *symbol, void *newFunc, void **oldFunc);
// For ELFs loaded in memory matching `inode`, exclude hooks registered for `symbol`.
// If `symbol` is nullptr, then all symbols will be excluded.
void pltHookExcludeInode(ino_t inode, const char *symbol);
// Commit all the hooks that was previously registered.
// Returns false if an error occurred.
bool pltHookCommit();
@@ -303,6 +311,8 @@ struct api_table {
int (*getModuleDir)(void * /* impl */);
uint32_t (*getFlags)(void * /* impl */);
bool (*exemptFd)(int);
void (*pltHookRegisterInode)(ino_t, const char *, void *, void **);
void (*pltHookExcludeInode)(ino_t, const char *);
};
template <class T>
@@ -332,6 +342,12 @@ inline uint32_t Api::getFlags() {
inline bool Api::exemptFd(int fd) {
return tbl->exemptFd != nullptr && tbl->exemptFd(fd);
}
inline void Api::pltHookRegisterInode(ino_t inode, const char *symbol, void *newFunc, void **oldFunc) {
if (tbl->pltHookExcludeInode) tbl->pltHookRegisterInode(inode, symbol, newFunc, oldFunc);
}
inline void Api::pltHookExcludeInode(ino_t inode, const char *symbol) {
if (tbl->pltHookExcludeInode) tbl->pltHookExcludeInode(inode, symbol);
}
inline void Api::hookJniNativeMethods(JNIEnv *env, const char *className, JNINativeMethod *methods, int numMethods) {
if (tbl->hookJniNativeMethods) tbl->hookJniNativeMethods(env, className, methods, numMethods);
}