X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/bb1c419ccbc0db9f1f4cec0c7d0602871be33018..47f55bc70a0eef068c8a27ca0618a11c512dbf20:/Mach/Inject.cpp diff --git a/Mach/Inject.cpp b/Mach/Inject.cpp index 6eb9dad..6ca0378 100644 --- a/Mach/Inject.cpp +++ b/Mach/Inject.cpp @@ -1,112 +1,302 @@ -#include -#include +/* Cycript - Optimizing JavaScript Compiler/Runtime + * Copyright (C) 2009-2013 Jay Freeman (saurik) +*/ -extern "C" { -#include -} +/* GNU General Public License, Version 3 {{{ */ +/* + * Cycript is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published + * by the Free Software Foundation, either version 3 of the License, + * or (at your option) any later version. + * + * Cycript is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Cycript. If not, see . +**/ +/* }}} */ + +#include "TargetConditionals.h" +#if TARGET_OS_IPHONE +#undef __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ +#define __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ __IPHONE_5_0 +#endif -#include +#include #include #include +#include +#include +#include + +#include + +#ifdef __arm__ +#include "Mach/Memory.hpp" +#endif + #include "Baton.hpp" #include "Exception.hpp" #include "Pooling.hpp" #include "Trampoline.t.hpp" -extern "C" void _pthread_set_self(pthread_t); +extern "C" void CYHandleServer(pid_t); -template -static void nlset(Type_ &function, struct nlist *nl, size_t index) { - struct nlist &name(nl[index]); - uintptr_t value(name.n_value); - if ((name.n_desc & N_ARM_THUMB_DEF) != 0) - value |= 0x00000001; - function = reinterpret_cast(value); -} +extern "C" void *_dyld_get_all_image_infos(); void InjectLibrary(pid_t pid) { - // XXX: break this into the build environment - const char *library("/usr/lib/libcycript.dylib"); - - static const size_t Stack_(8 * 1024); - size_t length(strlen(library) + 1), depth(sizeof(Baton) + length); - depth = (depth + sizeof(uintptr_t) + 1) / sizeof(uintptr_t) * sizeof(uintptr_t); - - CYPool pool; - uint8_t *local(reinterpret_cast(apr_palloc(pool, depth))); - Baton *baton(reinterpret_cast(local)); + Dl_info addr; + _assert(dladdr(reinterpret_cast(&CYHandleServer), &addr) != 0); - struct nlist nl[2]; - memset(nl, 0, sizeof(nl)); - nl[0].n_un.n_name = (char *) "__pthread_set_self"; - nlist("/usr/lib/libSystem.B.dylib", nl); - nlset(baton->_pthread_set_self, nl, 0); - _assert(baton->_pthread_set_self != NULL); + size_t flength(strlen(addr.dli_fname)); + char library[flength + 4 + 1]; + memcpy(library, addr.dli_fname, flength); + library[flength] = '\0'; + _assert(strcmp(library + flength - 6, ".dylib") == 0); +#if !TARGET_OS_IPHONE + strcpy(library + flength - 6, "-any.dylib"); +#endif - baton->pthread_create = &pthread_create; - baton->pthread_join = &pthread_join; + mach_port_t self(mach_task_self()), task; + _krncall(task_for_pid(self, pid, &task)); - baton->dlopen = &dlopen; - baton->dlsym = &dlsym; + task_dyld_info info; +#ifdef __arm__ + union { + struct { + uint32_t all_image_info_addr; + } info_1; - baton->mach_thread_self = &mach_thread_self; - baton->thread_terminate = &thread_terminate; + struct { + uint32_t all_image_info_addr; + uint32_t all_image_info_size; + int32_t all_image_info_format; + } info32; - baton->pid = getpid(); - memcpy(baton->library, library, length); + struct { + uint64_t all_image_info_addr; + uint64_t all_image_info_size; + int32_t all_image_info_format; + } info64; + } infoXX; - vm_size_t size(depth + Stack_); + mach_msg_type_number_t count(sizeof(infoXX) / sizeof(natural_t)); + _krncall(task_info(task, TASK_DYLD_INFO, reinterpret_cast(&infoXX), &count)); - mach_port_t self(mach_task_self()), task; - _krncall(task_for_pid(self, pid, &task)); + bool broken; - vm_address_t data; - _krncall(vm_allocate(task, &data, size, true)); - vm_address_t stack(data + depth); - vm_write(task, data, reinterpret_cast(baton), depth); - - vm_address_t code; - _krncall(vm_allocate(task, &code, sizeof(Trampoline_), true)); - vm_write(task, code, reinterpret_cast(Trampoline_), sizeof(Trampoline_)); - _krncall(vm_protect(task, code, sizeof(Trampoline_), false, VM_PROT_READ | VM_PROT_EXECUTE)); + switch (count) { + case sizeof(infoXX.info_1) / sizeof(natural_t): + broken = true; + info.all_image_info_addr = infoXX.info_1.all_image_info_addr; + info.all_image_info_size = 0; + info.all_image_info_format = TASK_DYLD_ALL_IMAGE_INFO_32; + break; + case sizeof(infoXX.info32) / sizeof(natural_t): + broken = true; + info.all_image_info_addr = infoXX.info32.all_image_info_addr; + info.all_image_info_size = infoXX.info32.all_image_info_size; + info.all_image_info_format = infoXX.info32.all_image_info_format; + break; + case sizeof(infoXX.info64) / sizeof(natural_t): + broken = false; + info.all_image_info_addr = infoXX.info64.all_image_info_addr; + info.all_image_info_size = infoXX.info64.all_image_info_size; + info.all_image_info_format = infoXX.info64.all_image_info_format; + break; + default: + _assert(false); + } +#else + mach_msg_type_number_t count(TASK_DYLD_INFO_COUNT); + _krncall(task_info(task, TASK_DYLD_INFO, reinterpret_cast(&info), &count)); + _assert(count == TASK_DYLD_INFO_COUNT); +#endif + _assert(info.all_image_info_addr != 0); thread_act_t thread; _krncall(thread_create(task, &thread)); + thread_state_t bottom; thread_state_flavor_t flavor; - mach_msg_type_number_t count; -#if defined(__arm__) - arm_thread_state_t state; - flavor = ARM_THREAD_STATE; - count = ARM_THREAD_STATE_COUNT; +#if defined (__i386__) || defined(__x86_64__) + x86_thread_state_t state; + memset(&state, 0, sizeof(state)); + + bottom = reinterpret_cast(&state); + flavor = MACHINE_THREAD_STATE; + count = MACHINE_THREAD_STATE_COUNT; +#elif defined(__arm__) || defined(__arm64__) + arm_unified_thread_state_t state; + memset(&state, 0, sizeof(state)); + + switch (info.all_image_info_format) { + case TASK_DYLD_ALL_IMAGE_INFO_32: + bottom = reinterpret_cast(&state.ts_32); + flavor = ARM_THREAD_STATE; + count = ARM_THREAD_STATE_COUNT; + state.ash.flavor = ARM_THREAD_STATE32; + break; + case TASK_DYLD_ALL_IMAGE_INFO_64: + bottom = reinterpret_cast(&state.ts_64); + flavor = ARM_THREAD_STATE64; + count = ARM_THREAD_STATE64_COUNT + 1; + state.ash.flavor = ARM_THREAD_STATE64; + break; + default: + _assert(false); + } #else #error XXX: implement #endif - memset(&state, 0, sizeof(state)); - mach_msg_type_number_t read(count); - _krncall(thread_get_state(thread, flavor, reinterpret_cast(&state), &read)); - _assert(count == count); - -#if defined(__arm__) - state.r[0] = data; - state.r[1] = RTLD_LAZY | RTLD_GLOBAL; - state.sp = stack + Stack_; - state.pc = code; - - if ((state.pc & 0x1) != 0) { - state.pc &= ~0x1; - state.cpsr |= 0x20; + _krncall(thread_get_state(thread, flavor, bottom, &read)); + _assert(read == count); + + Trampoline *trampoline; + size_t align; + size_t push; + +#if defined(__i386__) || defined(__x86_64__) + switch (state.tsh.flavor) { + case i386_THREAD_STATE: + trampoline = &Trampoline_i386_; + align = 4; + push = 5; + break; + case x86_THREAD_STATE64: + trampoline = &Trampoline_x86_64_; + align = 8; + push = 2; + break; + default: + _assert(false); + } +#elif defined(__arm__) || defined(__arm64__) + switch (state.ash.flavor) { + case ARM_THREAD_STATE32: + trampoline = &Trampoline_armv6_; + align = 4; + push = 0; + break; + case ARM_THREAD_STATE64: + trampoline = &Trampoline_arm64_; + align = 8; + push = 0; + break; + default: + _assert(false); } #else #error XXX: implement #endif - _krncall(thread_set_state(thread, flavor, reinterpret_cast(&state), count)); + static const size_t Stack_(8 * 1024); + size_t length(strlen(library) + 1), depth(sizeof(Baton) + length); + depth = (depth + align + 1) / align * align; + + CYPool pool; + uint8_t *local(pool.malloc(depth)); + Baton *baton(reinterpret_cast(local)); + + baton->dyld = info.all_image_info_addr; + baton->pid = getpid(); + memset(baton->error, 0, sizeof(baton->error)); + memcpy(baton->library, library, length); + + mach_vm_size_t size(depth + Stack_); + mach_vm_address_t stack; + _krncall(mach_vm_allocate(task, &stack, size, true)); + + mach_vm_address_t data(stack + Stack_); + _krncall(mach_vm_write(task, data, reinterpret_cast(baton), depth)); + + mach_vm_address_t code; + _krncall(mach_vm_allocate(task, &code, trampoline->size_, true)); + _krncall(mach_vm_write(task, code, reinterpret_cast(trampoline->data_), trampoline->size_)); + _krncall(mach_vm_protect(task, code, trampoline->size_, false, VM_PROT_READ | VM_PROT_EXECUTE)); + + uint32_t frame[push]; + if (sizeof(frame) != 0) + memset(frame, 0, sizeof(frame)); + +#if defined(__i386__) || defined(__x86_64__) + switch (state.tsh.flavor) { + case i386_THREAD_STATE: + frame[1] = data; + state.uts.ts32.__eip = code + trampoline->entry_; + state.uts.ts32.__esp = stack + Stack_ - sizeof(frame); + break; + case x86_THREAD_STATE64: + state.uts.ts64.__rdi = data; + state.uts.ts64.__rip = code + trampoline->entry_; + state.uts.ts64.__rsp = stack + Stack_ - sizeof(frame); + break; + default: + _assert(false); + } +#elif defined(__arm__) || defined(__arm64__) + switch (state.ash.flavor) { + case ARM_THREAD_STATE32: + state.ts_32.__r[0] = data; + state.ts_32.__pc = code + trampoline->entry_; + state.ts_32.__sp = stack + Stack_ - sizeof(frame); + + if ((state.ts_32.__pc & 0x1) != 0) { + state.ts_32.__pc &= ~0x1; + state.ts_32.__cpsr |= 0x20; + } + + break; + + case ARM_THREAD_STATE64: + state.ts_64.__x[0] = data; + state.ts_64.__pc = code + trampoline->entry_; + state.ts_64.__sp = stack + Stack_ - sizeof(frame); + break; + + default: + _assert(false); + } +#else + #error XXX: implement +#endif + + if (sizeof(frame) != 0) + _krncall(mach_vm_write(task, stack + Stack_ - sizeof(frame), reinterpret_cast(frame), sizeof(frame))); + + _krncall(thread_set_state(thread, flavor, bottom, read)); _krncall(thread_resume(thread)); + loop: switch (kern_return_t status = thread_get_state(thread, flavor, bottom, &(read = count))) { + case KERN_SUCCESS: + usleep(10000); + goto loop; + + case KERN_TERMINATED: + case MACH_SEND_INVALID_DEST: + break; + + default: + _assert(false); + } + + _krncall(mach_port_deallocate(self, thread)); + + mach_vm_size_t error(sizeof(baton->error)); + _krncall(mach_vm_read_overwrite(task, data + offsetof(Baton, error), sizeof(baton->error), reinterpret_cast(&baton->error), &error)); + _assert(error == sizeof(baton->error)); + if (baton->error[0] != '\0') + CYThrow("%s", baton->error); + + _krncall(mach_vm_deallocate(task, code, trampoline->size_)); + _krncall(mach_vm_deallocate(task, stack, size)); + _krncall(mach_port_deallocate(self, task)); }