| 1 | /* Cycript - Optimizing JavaScript Compiler/Runtime |
| 2 | * Copyright (C) 2009-2012 Jay Freeman (saurik) |
| 3 | */ |
| 4 | |
| 5 | /* GNU Lesser General Public License, Version 3 {{{ */ |
| 6 | /* |
| 7 | * Cycript is free software: you can redistribute it and/or modify it under |
| 8 | * the terms of the GNU Lesser General Public License as published by the |
| 9 | * Free Software Foundation, either version 3 of the License, or (at your |
| 10 | * option) any later version. |
| 11 | * |
| 12 | * Cycript is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 15 | * License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with Cycript. If not, see <http://www.gnu.org/licenses/>. |
| 19 | **/ |
| 20 | /* }}} */ |
| 21 | |
| 22 | #define _PTHREAD_ATTR_T |
| 23 | #include <pthread_internals.h> |
| 24 | |
| 25 | #include "Standard.hpp" |
| 26 | #include "Baton.hpp" |
| 27 | |
| 28 | template <typename Type_> |
| 29 | static _finline void dlset(Baton *baton, Type_ &function, const char *name, void *handle = RTLD_DEFAULT) { |
| 30 | function = reinterpret_cast<Type_>(baton->dlsym(handle, name)); |
| 31 | if (function == NULL) |
| 32 | baton->dlerror(); |
| 33 | } |
| 34 | |
| 35 | // XXX: where you find this needs to be relative to CoreFoundation (or something) |
| 36 | // XXX: this needs to check if the framework is under PrivateFrameworks instead |
| 37 | #define Framework(framework) \ |
| 38 | "/System/Library/Frameworks/" #framework ".framework/" #framework |
| 39 | |
| 40 | void *Routine(void *arg) { |
| 41 | Baton *baton(reinterpret_cast<Baton *>(arg)); |
| 42 | |
| 43 | int (*pthread_detach)(pthread_t); |
| 44 | dlset(baton, pthread_detach, "pthread_detach"); |
| 45 | |
| 46 | pthread_t (*pthread_self)(); |
| 47 | dlset(baton, pthread_self, "pthread_self"); |
| 48 | |
| 49 | pthread_detach(pthread_self()); |
| 50 | |
| 51 | void *(*dlopen)(const char *, int); |
| 52 | dlset(baton, dlopen, "dlopen"); |
| 53 | |
| 54 | if (baton->dlsym(RTLD_DEFAULT, "JSEvaluateScript") == NULL) |
| 55 | dlopen(Framework(JavaScriptCore), RTLD_GLOBAL | RTLD_LAZY); |
| 56 | |
| 57 | void *(*objc_getClass)(const char *); |
| 58 | dlset(baton, objc_getClass, "objc_getClass"); |
| 59 | |
| 60 | if (objc_getClass("WebUndefined") == NULL) |
| 61 | dlopen(Framework(WebKit), RTLD_GLOBAL | RTLD_LAZY); |
| 62 | |
| 63 | void *handle(dlopen(baton->library, RTLD_LAZY | RTLD_LOCAL)); |
| 64 | if (handle == NULL) { |
| 65 | baton->dlerror(); |
| 66 | return NULL; |
| 67 | } |
| 68 | |
| 69 | void (*CYHandleServer)(pid_t); |
| 70 | dlset(baton, CYHandleServer, "CYHandleServer", handle); |
| 71 | if (CYHandleServer == NULL) { |
| 72 | baton->dlerror(); |
| 73 | return NULL; |
| 74 | } |
| 75 | |
| 76 | CYHandleServer(baton->pid); |
| 77 | return NULL; |
| 78 | } |
| 79 | |
| 80 | static void $bzero(void *data, size_t size) { |
| 81 | char *bytes(reinterpret_cast<char *>(data)); |
| 82 | for (size_t i(0); i != size; ++i) |
| 83 | bytes[i] = 0; |
| 84 | } |
| 85 | |
| 86 | extern "C" void Start(Baton *baton) { |
| 87 | struct _pthread self; |
| 88 | $bzero(&self, sizeof(self)); |
| 89 | |
| 90 | // this code comes from _pthread_set_self |
| 91 | self.tsd[0] = &self; |
| 92 | baton->__pthread_set_self(&self); |
| 93 | |
| 94 | //int (*pthread_create)(pthread_t *, const pthread_attr_t *, void *(*)(void *), void *); |
| 95 | //dlset(baton, pthread_create, "pthread_create"); |
| 96 | |
| 97 | pthread_t thread; |
| 98 | baton->pthread_create(&thread, NULL, &Routine, baton); |
| 99 | |
| 100 | //mach_port_t (*mach_thread_self)(); |
| 101 | //dlset(baton, mach_thread_self, "mach_thread_self"); |
| 102 | |
| 103 | //kern_return_t (*thread_terminate)(thread_act_t); |
| 104 | //dlset(baton, thread_terminate, "thread_terminate"); |
| 105 | |
| 106 | baton->thread_terminate(baton->mach_thread_self()); |
| 107 | } |