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- /*
-
- substrate2.h ... Convenient wrapper for MobileSubstrate.
- Copyright (c) 2009 KennyTM~ <kennytm@gmail.com>
- All rights reserved.
- Redistribution and use in source and binary forms, with or without modification,
- are permitted provided that the following conditions are met:
- * Redistributions of source code must retain the above copyright notice, this
- list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
- * Neither the name of the KennyTM~ nor the names of its contributors may be
- used to endorse or promote products derived from this software without
- specific prior written permission.
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
- ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #ifndef SUBSTRATE2_H
- #define SUBSTRATE2_H
- // Use substrate.h on iPhoneOS, and APELite on x86/ppc for debugging.
- #ifdef __arm__
- #import <substrate.h>
- #define REGPARM3
- #elif __i386__ || __ppc__
- #import <objc/runtime.h>
- #import <objc/message.h>
- extern
- #if __cplusplus
- "C"
- #endif
- void* APEPatchCreate(const void* original, const void* replacement);
- #define MSHookFunction(original, replacement, result) (*(result) = APEPatchCreate((original), (replacement)))
- #define MSHookMessageEx(class, selector, replacement, result) (*(result) = method_setImplementation(class_getInstanceMethod((class), (selector)), (replacement)))
- #define REGPARM3 __attribute__((regparm(3)))
- #else
- #error Not supported in non-ARM/i386/PPC system.
- #endif
- #define Original(funcname) original_##funcname
- #define DefineHook(rettype, funcname, ...) \
- rettype funcname (__VA_ARGS__); \
- static rettype (*original_##funcname) (__VA_ARGS__); \
- static rettype replaced_##funcname (__VA_ARGS__)
- #define DefineObjCHook(rettype, funcname, ...) \
- static rettype (*original_##funcname) (__VA_ARGS__); \
- static rettype replaced_##funcname (__VA_ARGS__)
- #define DefineHiddenHook(rettype, funcname, ...) \
- static rettype (*funcname) (__VA_ARGS__); \
- REGPARM3 static rettype (*original_##funcname) (__VA_ARGS__); \
- REGPARM3 static rettype replaced_##funcname (__VA_ARGS__)
- #define InstallHook(funcname) MSHookFunction(funcname, replaced_##funcname, (void**)&original_##funcname)
- #define InstallObjCInstanceHook(cls, sel, delimited_name) MSHookMessageEx((cls), (sel), (IMP)replaced_##delimited_name, (IMP*)&original_##delimited_name)
- #define InstallObjCClassHook(cls, sel, delimited_name) MSHookMessageEx(object_getClass(cls), (sel), (IMP)replaced_##delimited_name, (IMP*)&original_##delimited_name)
- #endif
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