X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/eed4f17489f121ce232ce88b6127b6d4288f867f..f95d2598051e347460e028286ff2d33e5825e548:/Trampoline.t.cpp
diff --git a/Trampoline.t.cpp b/Trampoline.t.cpp
index ad1f515..5a51be0 100644
--- a/Trampoline.t.cpp
+++ b/Trampoline.t.cpp
@@ -1,100 +1,341 @@
-/* Cycript - Inlining/Optimizing JavaScript Compiler
- * Copyright (C) 2009 Jay Freeman (saurik)
+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2014 Jay Freeman (saurik)
*/
-/* Modified BSD License {{{ */
+/* GNU Affero General Public License, Version 3 {{{ */
/*
- * Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the
- * above copyright notice, this list of conditions
- * and the following disclaimer.
- * 2. 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.
- * 3. The name of the author may not be used to endorse
- * or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
-*/
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program 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 Affero General Public License for more details.
+
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see .
+**/
/* }}} */
+#include
+#if defined(__arm__) || defined(__arm64__)
+#undef TARGET_IPHONE_SIMULATOR
+#define TARGET_IPHONE_SIMULATOR 1
+#endif
#define _PTHREAD_ATTR_T
#include
+#if defined(__arm__) || defined(__arm64__)
+#undef TARGET_IPHONE_SIMULATOR
+#endif
+
+#include
+#include
+#include
+#include
#include "Standard.hpp"
#include "Baton.hpp"
+static void $bzero(void *data, size_t size) {
+ char *bytes(reinterpret_cast(data));
+ for (size_t i(0); i != size; ++i)
+ bytes[i] = 0;
+}
+
+__attribute__((__unused__))
+static void $memcpy(char *dst, const char *src, size_t size) {
+ for (size_t i(0); i != size; ++i)
+ dst[i] = src[i];
+}
+
+static int $strcmp(const char *lhs, const char *rhs) {
+ while (*lhs == *rhs) {
+ if (*lhs == '\0')
+ return 0;
+ ++lhs, ++rhs;
+ } return *lhs < *rhs ? -1 : 1;
+}
+
+static void $strlcpy(char *dst, const char *src, size_t size) {
+ if (src == NULL)
+ src = "(null)";
+ if (size == 0)
+ return;
+ size_t i(0);
+ while (i != size - 1) {
+ char value(src[i]);
+ if (value == '\0')
+ break;
+ dst[i++] = value;
+ } dst[i] = '\0';
+}
+
+__attribute__((__unused__))
+static char *$strstr(const char *haystack, const char *needle) {
+ if (*needle == '\0')
+ return NULL;
+ for (; *haystack != '\0'; ++haystack)
+ for (size_t i(0); ; ++i)
+ if (needle[i] == '\0')
+ return const_cast(haystack);
+ else if (needle[i] != haystack[i])
+ break;
+ return NULL;
+}
+
+__attribute__((__unused__))
+static size_t $strlen(const char *data) {
+ for (size_t i(0); ; ++i)
+ if (data[i] == '\0')
+ return i;
+}
+
+__attribute__((__unused__))
+static void $snprintfp(char *dst, size_t size, const void *pointer) {
+ uintptr_t value(reinterpret_cast(pointer));
+ char buffer[32];
+ char *end(buffer + sizeof(buffer));
+ *--end = '\0';
+ if (value == 0)
+ *--end = '0';
+ else do {
+ unsigned digit(value & 0xf);
+ value >>= 4;
+ *--end = (digit < 10 ? '0' : 'a' - 10) + digit;
+ } while (value != 0);
+ *--end = 'x';
+ *--end = '0';
+ $strlcpy(dst, end, size);
+}
+
+#ifdef __LP64__
+typedef struct mach_header_64 mach_header_xx;
+typedef struct nlist_64 nlist_xx;
+typedef struct segment_command_64 segment_command_xx;
+
+static const uint32_t LC_SEGMENT_XX = LC_SEGMENT_64;
+static const uint32_t MH_MAGIC_XX = MH_MAGIC_64;
+#else
+typedef struct mach_header mach_header_xx;
+typedef struct nlist nlist_xx;
+typedef struct segment_command segment_command_xx;
+
+static const uint32_t LC_SEGMENT_XX = LC_SEGMENT;
+static const uint32_t MH_MAGIC_XX = MH_MAGIC;
+#endif
+
+#define forlc(command, mach, lc, type) \
+ if (const struct load_command *load_commands = reinterpret_cast(mach + 1)) \
+ if (const struct load_command *lcp = load_commands) \
+ for (uint32_t i(0); i != mach->ncmds; ++i, lcp = reinterpret_cast(reinterpret_cast(lcp) + lcp->cmdsize)) \
+ if ( \
+ lcp->cmdsize % sizeof(long) != 0 || lcp->cmdsize <= 0 || \
+ reinterpret_cast(lcp) + lcp->cmdsize > reinterpret_cast(load_commands) + mach->sizeofcmds \
+ ) \
+ break; \
+ else if (lcp->cmd != lc) \
+ continue; \
+ else if (lcp->cmdsize < sizeof(type)) \
+ break; \
+ else if (const type *command = reinterpret_cast(lcp))
+
+static const mach_header_xx *Library(struct dyld_all_image_infos *infos, const char *name) {
+ for (uint32_t i(0); i != infos->infoArrayCount; ++i) {
+ const dyld_image_info &info(infos->infoArray[i]);
+ const mach_header_xx *mach(reinterpret_cast(info.imageLoadAddress));
+ if (mach->magic != MH_MAGIC_XX)
+ continue;
+
+ const char *path(info.imageFilePath);
+ forlc (dylib, mach, LC_ID_DYLIB, dylib_command)
+ path = reinterpret_cast(dylib) + dylib->dylib.name.offset;
+ if ($strcmp(path, name) != 0)
+ continue;
+
+ return mach;
+ }
+
+ return NULL;
+}
+
+static void *Symbol(const mach_header_xx *mach, const char *name) {
+ const struct symtab_command *stp(NULL);
+ forlc (command, mach, LC_SYMTAB, struct symtab_command)
+ stp = command;
+ if (stp == NULL)
+ return NULL;
+
+ size_t slide(_not(size_t));
+ const nlist_xx *symbols(NULL);
+ const char *strings(NULL);
+
+ forlc (segment, mach, LC_SEGMENT_XX, segment_command_xx) {
+ if (segment->fileoff == 0)
+ slide = reinterpret_cast(mach) - segment->vmaddr;
+ if (stp->symoff >= segment->fileoff && stp->symoff < segment->fileoff + segment->filesize)
+ symbols = reinterpret_cast(stp->symoff - segment->fileoff + segment->vmaddr + slide);
+ if (stp->stroff >= segment->fileoff && stp->stroff < segment->fileoff + segment->filesize)
+ strings = reinterpret_cast(stp->stroff - segment->fileoff + segment->vmaddr + slide);
+ }
+
+ if (slide == _not(size_t) || symbols == NULL || strings == NULL)
+ return NULL;
+
+ for (size_t i(0); i != stp->nsyms; ++i) {
+ const nlist_xx *symbol(&symbols[i]);
+ if (symbol->n_un.n_strx == 0 || (symbol->n_type & N_STAB) != 0)
+ continue;
+
+ const char *nambuf(strings + symbol->n_un.n_strx);
+ if ($strcmp(name, nambuf) != 0)
+ continue;
+
+ uintptr_t value(symbol->n_value);
+ if (value == 0)
+ continue;
+
+#ifdef __arm__
+ if ((symbol->n_desc & N_ARM_THUMB_DEF) != 0)
+ value |= 0x00000001;
+#endif
+
+ value += slide;
+ return reinterpret_cast(value);
+ }
+
+ return NULL;
+}
+
template
-static _finline void dlset(Baton *baton, Type_ &function, const char *name, void *handle = RTLD_DEFAULT) {
- function = reinterpret_cast(baton->dlsym(handle, name));
+static _finline void cyset(Type_ &function, const char *name, const mach_header_xx *mach) {
+ function = reinterpret_cast(Symbol(mach, name));
}
+static _finline const mach_header_xx *Library(Baton *baton, const char *name) {
+ struct dyld_all_image_infos *infos(reinterpret_cast(baton->dyld));
+ return Library(infos, name);
+}
+
+#if defined(__i386__) || defined(__x86_64__)
+static bool Simulator(struct dyld_all_image_infos *infos) {
+ for (uint32_t i(0); i != infos->infoArrayCount; ++i) {
+ const dyld_image_info &info(infos->infoArray[i]);
+ const char *path(info.imageFilePath);
+ if ($strstr(path, "/SDKs/iPhoneSimulator") != NULL)
+ return true;
+ } return false;
+}
+
+static bool Simulator(Baton *baton) {
+ struct dyld_all_image_infos *infos(reinterpret_cast(baton->dyld));
+ return Simulator(infos);
+}
+#endif
+
void *Routine(void *arg) {
Baton *baton(reinterpret_cast(arg));
- void *(*dlopen)(const char *, int);
- dlset(baton, dlopen, "dlopen");
+ const mach_header_xx *dyld(NULL);
+ if (dyld == NULL)
+ dyld = Library(baton, "/usr/lib/system/libdyld.dylib");
+ if (dyld == NULL)
+ dyld = Library(baton, "/usr/lib/libSystem.B.dylib");
- void *handle(dlopen(baton->library, RTLD_LAZY | RTLD_LOCAL));
+ char *(*$dlerror)();
+ cyset($dlerror, "_dlerror", dyld);
- void (*CYHandleServer)(pid_t);
- dlset(baton, CYHandleServer, "CYHandleServer", handle);
+ void *(*$dlopen)(const char *, int);
+ cyset($dlopen, "_dlopen", dyld);
- CYHandleServer(baton->pid);
+#if defined(__i386__) || defined(__x86_64__)
+ size_t length($strlen(baton->library));
+ if (length >= 10 && $strcmp(baton->library + length - 10, "-###.dylib") == 0)
+ $memcpy(baton->library + length - 10, Simulator(baton) ? "-sim" : "-sys", 4);
+#endif
- return arg;
-}
+ void *handle($dlopen(baton->library, RTLD_LAZY | RTLD_LOCAL));
+ if (handle == NULL) {
+ $strlcpy(baton->error, $dlerror(), sizeof(baton->error));
+ return NULL;
+ }
-static void $bzero(void *data, size_t size) {
- char *bytes(reinterpret_cast(data));
- for (size_t i(0); i != size; ++i)
- bytes[i] = 0;
+ void *(*$dlsym)(void *, const char *);
+ cyset($dlsym, "_dlsym", dyld);
+
+ void (*CYHandleServer)(pid_t);
+ CYHandleServer = reinterpret_cast($dlsym(handle, "CYHandleServer"));
+ if (CYHandleServer == NULL) {
+ $strlcpy(baton->error, $dlerror(), sizeof(baton->error));
+ return NULL;
+ }
+
+ CYHandleServer(baton->pid);
+ return NULL;
}
extern "C" void Start(Baton *baton) {
struct _pthread self;
$bzero(&self, sizeof(self));
- // this code comes from _pthread_set_self
+ const mach_header_xx *pthread(NULL);
+ if (pthread == NULL)
+ pthread = Library(baton, "/usr/lib/system/libsystem_pthread.dylib");
+ if (pthread == NULL)
+ pthread = Library(baton, "/usr/lib/system/libsystem_c.dylib");
+ if (pthread == NULL)
+ pthread = Library(baton, "/usr/lib/libSystem.B.dylib");
+
+ void (*$__pthread_set_self)(void **);
+ cyset($__pthread_set_self, "___pthread_set_self", pthread);
+
self.tsd[0] = &self;
- baton->__pthread_set_self(&self);
+ $__pthread_set_self(&self.tsd[0]);
+
+ int (*$pthread_attr_init)(pthread_attr_t *);
+ cyset($pthread_attr_init, "_pthread_attr_init", pthread);
+
+#if 0
+ pthread_attr_t attr;
+ $pthread_attr_init(&attr);
+
+ int (*$pthread_attr_setdetachstate)(pthread_attr_t *, int);
+ cyset($pthread_attr_setdetachstate, "_pthread_attr_setdetachstate", pthread);
- int (*pthread_create)(pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);
- dlset(baton, pthread_create, "pthread_create");
+ $pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+#endif
+
+ int (*$pthread_create)(pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);
+ cyset($pthread_create, "_pthread_create", pthread);
pthread_t thread;
- baton->pthread_create(&thread, NULL, &Routine, baton);
+ $pthread_create(&thread, NULL, &Routine, baton);
+
+#if 0
+ int (*$pthread_attr_destroy)(pthread_attr_t *);
+ cyset($pthread_attr_destroy, "_pthread_attr_destroy", pthread);
+
+ $pthread_attr_destroy(&attr);
+#endif
+
+ int (*$pthread_join)(pthread_t, void **);
+ cyset($pthread_join, "_pthread_join", pthread);
- int (*pthread_join)(pthread_t, void **);
- dlset(baton, pthread_join, "pthread_join");
+ void *status;
+ $pthread_join(thread, &status);
- void *result;
- baton->pthread_join(thread, &result);
+ const mach_header_xx *kernel(NULL);
+ if (kernel == NULL)
+ kernel = Library(baton, "/usr/lib/system/libsystem_kernel.dylib");
+ if (kernel == NULL)
+ kernel = Library(baton, "/usr/lib/libSystem.B.dylib");
- mach_port_t (*mach_thread_self)();
- dlset(baton, mach_thread_self, "mach_thread_self");
+ mach_port_t (*$mach_thread_self)();
+ cyset($mach_thread_self, "_mach_thread_self", kernel);
- kern_return_t (*thread_terminate)(thread_act_t);
- dlset(baton, thread_terminate, "thread_terminate");
+ kern_return_t (*$thread_terminate)(thread_act_t);
+ cyset($thread_terminate, "_thread_terminate", kernel);
- baton->thread_terminate(baton->mach_thread_self());
+ $thread_terminate($mach_thread_self());
}