Provide a new ?destroy to release the JSContext.

[cycript.git] / Trampoline.t.cpp

diff --git a/Trampoline.t.cpp b/Trampoline.t.cpp
index aff0296c1778bd1eebabd6bdd25e8a9a084b2480..7c6b388bb491a23f36491a93d1ccfba4a0c54866 100644 (file)
--- a/Trampoline.t.cpp
+++ b/Trampoline.t.cpp
@@ -19,16 +19,21 @@
 **/
 /* }}} */
 
 **/
 /* }}} */
 

+#include <TargetConditionals.h>
+#if defined(__arm__) || defined(__arm64__)
+#undef TARGET_IPHONE_SIMULATOR
+#define TARGET_IPHONE_SIMULATOR 1
+#endif

 #define _PTHREAD_ATTR_T
 #include <pthread_internals.h>
 #define _PTHREAD_ATTR_T
 #include <pthread_internals.h>

+#if defined(__arm__) || defined(__arm64__)
+#undef TARGET_IPHONE_SIMULATOR
+#endif

 
 #include <mach-o/dyld.h>
 #include <mach-o/dyld_images.h>
 #include <mach-o/loader.h>
 
 #include <mach-o/dyld.h>
 #include <mach-o/dyld_images.h>
 #include <mach-o/loader.h>

-
-extern "C" {

 #include <mach-o/nlist.h>
 #include <mach-o/nlist.h>

-}

 
 #include "Standard.hpp"
 #include "Baton.hpp"
 
 #include "Standard.hpp"
 #include "Baton.hpp"


@@ -47,6 +52,18 @@ static int $strcmp(const char *lhs, const char *rhs) {
     } return *lhs < *rhs ? -1 : 1;
 }
 
     } return *lhs < *rhs ? -1 : 1;
 }
 

+static void $strlcpy(char *dst, const char *src, size_t size) {
+    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';
+}
+

 #ifdef __LP64__
 typedef struct mach_header_64 mach_header_xx;
 typedef struct nlist_64 nlist_xx;
 #ifdef __LP64__
 typedef struct mach_header_64 mach_header_xx;
 typedef struct nlist_64 nlist_xx;


@@ -78,18 +95,26 @@ static const uint32_t MH_MAGIC_XX = MH_MAGIC;
                     return NULL; \
                 else if (const type *command = reinterpret_cast<const type *>(lcp))
 
                     return NULL; \
                 else if (const type *command = reinterpret_cast<const type *>(lcp))
 

-static void *Symbol(struct dyld_all_image_infos *infos, const char *library, const char *name) {
-    const dyld_image_info *info(NULL);
-    for (uint32_t i(0); i != infos->infoArrayCount; ++i)
-        if ($strcmp(infos->infoArray[i].imageFilePath, library) == 0)
-            info = &infos->infoArray[i];
-    if (info == NULL)
-        return NULL;
+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<const mach_header_xx *>(info.imageLoadAddress));
+        if (mach->magic != MH_MAGIC_XX)
+            continue;

 
 

-    const mach_header_xx *mach(reinterpret_cast<const mach_header_xx *>(info->imageLoadAddress));
-    if (mach->magic != MH_MAGIC_XX)
-        return NULL;
+        const char *path(info.imageFilePath);
+        forlc (dylib, mach, LC_ID_DYLIB, dylib_command)
+            path = reinterpret_cast<const char *>(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;
     const struct symtab_command *stp(NULL);
     forlc (command, mach, LC_SYMTAB, struct symtab_command)
         stp = command;


@@ -125,6 +150,11 @@ static void *Symbol(struct dyld_all_image_infos *infos, const char *library, con
         if (value == 0)
             continue;
 
         if (value == 0)
             continue;
 

+#ifdef __arm__
+        if ((symbol->n_desc & N_ARM_THUMB_DEF) != 0)
+            value |= 0x00000001;
+#endif
+

         value += slide;
         return reinterpret_cast<void *>(value);
     }
         value += slide;
         return reinterpret_cast<void *>(value);
     }


@@ -132,70 +162,48 @@ static void *Symbol(struct dyld_all_image_infos *infos, const char *library, con
     return NULL;
 }
 
     return NULL;
 }
 

-struct Dynamic {
-    char *(*dlerror)();
-    void *(*dlsym)(void *, const char *);
-};
-

 template <typename Type_>
 template <typename Type_>

-static _finline void dlset(Dynamic *dynamic, Type_ &function, const char *name, void *handle = RTLD_DEFAULT) {
-    function = reinterpret_cast<Type_>(dynamic->dlsym(handle, name));
-    if (function == NULL)
-        dynamic->dlerror();
+static _finline void cyset(Type_ &function, const char *name, const mach_header_xx *mach) {
+    function = reinterpret_cast<Type_>(Symbol(mach, name));

 }
 
 }
 

-template <typename Type_>
-static _finline void cyset(Baton *baton, Type_ &function, const char *name, const char *library) {
+static _finline const mach_header_xx *Library(Baton *baton, const char *name) {

     struct dyld_all_image_infos *infos(reinterpret_cast<struct dyld_all_image_infos *>(baton->dyld));
     struct dyld_all_image_infos *infos(reinterpret_cast<struct dyld_all_image_infos *>(baton->dyld));

-    function = reinterpret_cast<Type_>(Symbol(infos, library, name));
+    return Library(infos, name);

 }
 
 }
 

-// XXX: where you find this needs to be relative to CoreFoundation (or something)
-// XXX: this needs to check if the framework is under PrivateFrameworks instead
-#define Framework(framework) \
-    "/System/Library/Frameworks/" #framework ".framework/" #framework
-

 void *Routine(void *arg) {
     Baton *baton(reinterpret_cast<Baton *>(arg));
 
 void *Routine(void *arg) {
     Baton *baton(reinterpret_cast<Baton *>(arg));
 

-    Dynamic dynamic;
-    cyset(baton, dynamic.dlerror, "_dlerror", "/usr/lib/system/libdyld.dylib");
-    cyset(baton, dynamic.dlsym, "_dlsym", "/usr/lib/system/libdyld.dylib");
-
-    int (*pthread_detach)(pthread_t);
-    dlset(&dynamic, pthread_detach, "pthread_detach");
-
-    pthread_t (*pthread_self)();
-    dlset(&dynamic, pthread_self, "pthread_self");
-
-    pthread_detach(pthread_self());
-
-    void *(*dlopen)(const char *, int);
-    dlset(&dynamic, 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");

 
 

-    if (dynamic.dlsym(RTLD_DEFAULT, "JSEvaluateScript") == NULL)
-        dlopen(Framework(JavaScriptCore), RTLD_GLOBAL | RTLD_LAZY);
+    char *(*$dlerror)();
+    cyset($dlerror, "_dlerror", dyld);

 
 

-    void *(*objc_getClass)(const char *);
-    dlset(&dynamic, objc_getClass, "objc_getClass");
+    void *(*$dlopen)(const char *, int);
+    cyset($dlopen, "_dlopen", dyld);

 
 

-    if (objc_getClass("WebUndefined") == NULL)
-        dlopen(Framework(WebKit), RTLD_GLOBAL | RTLD_LAZY);
-
-    void *handle(dlopen(baton->library, RTLD_LAZY | RTLD_LOCAL));
+    void *handle($dlopen(baton->library, RTLD_LAZY | RTLD_LOCAL));

     if (handle == NULL) {
     if (handle == NULL) {

-        dynamic.dlerror();
+        $strlcpy(baton->error, $dlerror(), sizeof(baton->error));

         return NULL;
     }
 
         return NULL;
     }
 

-    void (*CYHandleServer)(pid_t);
-    dlset(&dynamic, CYHandleServer, "CYHandleServer", handle);
+    void *(*$dlsym)(void *, const char *);
+    cyset($dlsym, "_dlsym", dyld);
+
+    void (*CYHandleServer)(pid_t, char *, size_t);
+    CYHandleServer = reinterpret_cast<void (*)(pid_t, char *, size_t)>($dlsym(handle, "CYHandleServer"));

     if (CYHandleServer == NULL) {
     if (CYHandleServer == NULL) {

-        dynamic.dlerror();
+        $strlcpy(baton->error, $dlerror(), sizeof(baton->error));

         return NULL;
     }
 
         return NULL;
     }
 

-    CYHandleServer(baton->pid);
+    CYHandleServer(baton->pid, baton->error, sizeof(baton->error));

     return NULL;
 }
 
     return NULL;
 }
 


@@ -203,23 +211,63 @@ extern "C" void Start(Baton *baton) {
     struct _pthread self;
     $bzero(&self, sizeof(self));
 
     struct _pthread self;
     $bzero(&self, sizeof(self));
 

-    void (*$__pthread_set_self)(pthread_t);
-    cyset(baton, $__pthread_set_self, "___pthread_set_self", "/usr/lib/system/libsystem_c.dylib");
+    const mach_header_xx *pthread(NULL);
+    if (pthread == NULL)
+        pthread = Library(baton, "/usr/lib/system/libsystem_pthread.dylib");
+    if (pthread == NULL)
+        pthread = Library(baton, "/usr/lib/system/libsystem_c.dylib");
+    if (pthread == NULL)
+        pthread = Library(baton, "/usr/lib/libSystem.B.dylib");
+
+    void (*$__pthread_set_self)(void **);
+    cyset($__pthread_set_self, "___pthread_set_self", pthread);

 
     self.tsd[0] = &self;
 
     self.tsd[0] = &self;

-    $__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);
+
+    $pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+#endif

 
     int (*$pthread_create)(pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);
 
     int (*$pthread_create)(pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);

-    cyset(baton, $pthread_create, "_pthread_create", "/usr/lib/system/libsystem_c.dylib");
+    cyset($pthread_create, "_pthread_create", pthread);

 
     pthread_t thread;
     $pthread_create(&thread, NULL, &Routine, baton);
 
 
     pthread_t thread;
     $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);
+
+    void *status;
+    $pthread_join(thread, &status);
+
+    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 (*$mach_thread_self)();
     mach_port_t (*$mach_thread_self)();

-    cyset(baton, $mach_thread_self, "_mach_thread_self", "/usr/lib/system/libsystem_kernel.dylib");
+    cyset($mach_thread_self, "_mach_thread_self", kernel);

 
     kern_return_t (*$thread_terminate)(thread_act_t);
 
     kern_return_t (*$thread_terminate)(thread_act_t);

-    cyset(baton, $thread_terminate, "_thread_terminate", "/usr/lib/system/libsystem_kernel.dylib");
+    cyset($thread_terminate, "_thread_terminate", kernel);

 
     $thread_terminate($mach_thread_self());
 }
 
     $thread_terminate($mach_thread_self());
 }