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adapt JitStreamer EB 0.2.0, hide lc from dyld api, fix zsign not sign…
…ing FAT binaries
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| // | ||
| // Dyld.m | ||
| // LiveContainer | ||
| // | ||
| // Created by s s on 2025/2/7. | ||
| // | ||
| #include <dlfcn.h> | ||
| #include <execinfo.h> | ||
| #include <signal.h> | ||
| #include <sys/mman.h> | ||
| #include <stdlib.h> | ||
| #include <mach/mach.h> | ||
| #include <mach-o/dyld.h> | ||
| #include <mach-o/dyld_images.h> | ||
| #include <objc/runtime.h> | ||
| #include <mach-o/ldsyms.h> | ||
| #import "../fishhook/fishhook.h" | ||
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| uint32_t appMainImageIndex = 0; | ||
| void* appExecutableHandle = 0; | ||
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| void* (*orig_dlsym)(void * __handle, const char * __symbol); | ||
| uint32_t (*orig_dyld_image_count)(void); | ||
| const struct mach_header* (*orig_dyld_get_image_header)(uint32_t image_index); | ||
| intptr_t (*orig_dyld_get_image_vmaddr_slide)(uint32_t image_index); | ||
| const char* (*orig_dyld_get_image_name)(uint32_t image_index); | ||
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| static inline int translateImageIndex(int origin) { | ||
| if(origin == 1) { | ||
| return appMainImageIndex; | ||
| } | ||
| if(origin >= appMainImageIndex) { | ||
| return origin + 1; | ||
| } | ||
| return origin; | ||
| } | ||
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| void* hook_dlsym(void * __handle, const char * __symbol) { | ||
| if(__handle == (void*)RTLD_MAIN_ONLY) { | ||
| if(strcmp(__symbol, MH_EXECUTE_SYM) == 0) { | ||
| return (void*)orig_dyld_get_image_header(appMainImageIndex); | ||
| } | ||
| __handle = appExecutableHandle; | ||
| } | ||
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| __attribute__((musttail)) return orig_dlsym(__handle, __symbol); | ||
| } | ||
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| uint32_t hook_dyld_image_count(void) { | ||
| return orig_dyld_image_count() - 1; | ||
| } | ||
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| const struct mach_header* hook_dyld_get_image_header(uint32_t image_index) { | ||
| __attribute__((musttail)) return orig_dyld_get_image_header(translateImageIndex(image_index)); | ||
| } | ||
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| intptr_t hook_dyld_get_image_vmaddr_slide(uint32_t image_index) { | ||
| __attribute__((musttail)) return orig_dyld_get_image_vmaddr_slide(translateImageIndex(image_index)); | ||
| } | ||
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| const char* hook_dyld_get_image_name(uint32_t image_index) { | ||
| __attribute__((musttail)) return orig_dyld_get_image_name(translateImageIndex(image_index)); | ||
| } | ||
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| void DyldHooksInit(void) { | ||
| // hook dlsym to solve RTLD_MAIN_ONLY, hook other functions to hide LiveContainer itself | ||
| rebind_symbols((struct rebinding[5]){ | ||
| {"dlsym", (void *)hook_dlsym, (void **)&orig_dlsym}, | ||
| {"_dyld_image_count", (void *)hook_dyld_image_count, (void **)&orig_dyld_image_count}, | ||
| {"_dyld_get_image_header", (void *)hook_dyld_get_image_header, (void **)&orig_dyld_get_image_header}, | ||
| {"_dyld_get_image_vmaddr_slide", (void *)hook_dyld_get_image_vmaddr_slide, (void **)&orig_dyld_get_image_vmaddr_slide}, | ||
| {"_dyld_get_image_name", (void *)hook_dyld_get_image_name, (void **)&orig_dyld_get_image_name}, | ||
| },5); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| #import <Foundation/Foundation.h> | ||
| #import "Tweaks.h" | ||
| #import <objc/runtime.h> | ||
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| @implementation NSString(LiveContainer) | ||
| - (NSString *)lc_realpath { | ||
| // stringByResolvingSymlinksInPath does not fully resolve symlink, and some apps will cradh without /private prefix | ||
| char result[PATH_MAX]; | ||
| realpath(self.fileSystemRepresentation, result); | ||
| return [NSString stringWithUTF8String:result]; | ||
| } | ||
| @end | ||
| @implementation NSBundle(LiveContainer) | ||
| // Built-in initWith* will strip out the /private prefix, which could crash certain apps | ||
| // This initializer replicates +[NSBundle mainBundle] to solve this issue (FIXME: may not work) | ||
| - (instancetype)initWithPathForMainBundle:(NSString *)path { | ||
| self = [self init]; | ||
| CFURLRef url = (__bridge CFURLRef)[NSURL fileURLWithPath:path.lc_realpath]; | ||
| object_setIvar(self, class_getInstanceVariable(self.class, "_cfBundle"), CFBridgingRelease(CFBundleCreate(NULL, url))); | ||
| return self; | ||
| } | ||
| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| // | ||
| // Tweaks.h | ||
| // LiveContainer | ||
| // | ||
| // Created by s s on 2025/2/7. | ||
| // | ||
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| void swizzle(Class class, SEL originalAction, SEL swizzledAction); | ||
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| void NUDGuestHooksInit(void); | ||
| void SecItemGuestHooksInit(void); | ||
| void DyldHooksInit(void); | ||
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| @interface NSBundle(LiveContainer) | ||
| - (instancetype)initWithPathForMainBundle:(NSString *)path; | ||
| @end | ||
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| extern uint32_t appMainImageIndex; | ||
| extern void* appExecutableHandle; |
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