initial commit

.gitignore

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+.theos
+theos
+*.deb

Makefile

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+ARCHS = armv7s armv7
+
+include theos/makefiles/common.mk
+
+ADDITIONAL_CCFLAGS  = -Qunused-arguments -w
+
+TWEAK_NAME = itracer
+itracer_FILES = Tweak.xmi tracer.mm hijack_arm.S
+itracer_LIBRARIES = substrate
+itracer_FRAMEWORKS = Foundation
+
+include $(THEOS_MAKE_PATH)/tweak.mk
+

README.md

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+# itracer
+
+## Requirement
+
+Jailbreaked 32bit iOS device
+
+## Install itracer
+
+1. download debian package
+1. copy debian package to your iOS device
+1. ssh login and install debian package
+```sh
+ssh -l root <ios_device_ip>
+dpkg -i /path/to/package
+```
+
+## Uninstall itracer
+
+```sh
+dpkg -r cdi.itracer
+```
+
+## Using itracer
+
+1. Choose the trace target from `Settings > itracer`
+1. Run target application
+1. Check `/tmp/itracer_<target_app_bundlename>.log`
+
+### Sample output
+
+<pre>
+[NSSQLBindVariable setIndex:]
+	(uint)3
+
+[_NSSQLGenerator appendSQL:]
+	<__NSCFConstantString>", "
+
+[_NSSQLGenerator appendSQL:]
+	<__NSCFConstantString>"?"
+
+[NSSQLBindVariable initWithValue:sqlType:attributeDescription:]
+	<__NSCFString>"P@ssw0rd"
+	(uint)6
+	<NSAttributeDescription>
+
+[NSSQLBindVariable setIndex:]
+	(uint)4
+
+[_NSSQLGenerator appendSQL:]
+	<__NSCFConstantString>", "
+
+[_NSSQLGenerator appendSQL:]
+</pre>
+
+## Building itracer
+
+### Build
+
+```sh
+make
+```
+
+### Packaging
+
+```sh
+make package
+```
+
+
+License
+--------
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

Tweak.xmi

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+
+extern "C" void HookObjcFunctions( const char *appName );
+
+static NSString *preferenceFilePath = @"/private/var/mobile/Library/Preferences/cdi.itracer.plist";
+
+// Tweak starts here
+%ctor {
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    // Only hook Apps the user has selected in itracer's settings panel
+    NSString *appId = [[NSBundle mainBundle] bundleIdentifier];
+
+    // Load itracer preferences
+    NSMutableDictionary *preferences = [[NSMutableDictionary alloc] initWithContentsOfFile:preferenceFilePath];
+    id shouldHook = [preferences objectForKey:appId];
+    if ( (shouldHook == nil) || (! [shouldHook boolValue]) ) {
+        NSLog(@"itracer - Profiling disabled for %@", appId);
+    	[preferences release];
+        [pool drain];
+	    return;
+    }
+
+	// Initialize DB storage
+    NSLog(@"itracer - Profiling enabled for %@", appId);
+
+    HookObjcFunctions( [ appId UTF8String ] );
+
+    [preferences release];
+    [pool drain];
+}
+
+/* vim: set filetype=objc : */

hijack_arm.S

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+.macro HIJACK
+.section	__TEXT,__text,regular,pure_instructions
+.globl _replaced_$0
+.align 4
+_replaced_$0:
+  stmdb	sp!, {r0-r12, lr}
+  bl	_msg_debug_$1
+  ldmia	sp!, {r0-r12, lr}
+  stmdb sp!, {r0, pc}
+  ldr	r0, reloc_$0
+reloc_pc_$0:
+  ldr	r0, [pc, r0]
+  ldr	r0, [r0]
+  str   r0, [sp, #4]
+  ldmia sp!, {r0, pc}
+
+.align 4
+reloc_$0:
+  .long _old_$0$non_lazy_ptr-(reloc_pc_$0+8)
+.section	__DATA,__nl_symbol_ptr,non_lazy_symbol_pointers
+_old_$0$non_lazy_ptr:
+	.indirect_symbol	_old_$0
+	.long	0
+.endmacro
+
+#define FUNC(symbol, prototype) HIJACK symbol, prototype
+#include "objc_funcs.h"

layout/DEBIAN/control

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+Package: cdi.itracer
+Name: itracer
+Depends: mobilesubstrate, preferenceloader, applist
+Version: 0.0.1
+Architecture: iphoneos-arm
+Maintainer: jx6f
+Author: jx6f
+Section: Tweaks

layout/Library/PreferenceLoader/Preferences/itracer.plist

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+entry = {
+  bundle = AppList;
+  cell = PSLinkCell;
+  icon = "/Library/PreferenceLoader/Preferences/itracer.png";
+  isController = 1;
+  label = "itracer";
+  ALSettingsPath = "/var/mobile/Library/Preferences/cdi.itracer.plist";
+  ALSettingsKeyPrefix = "";
+  ALChangeNotification = "cdi.itracer";
+  ALAllowsSelection = 1;
+  ALSectionDescriptors = (
+    {
+      title = "User Applications";
+      predicate = "isSystemApplication = FALSE";
+      "cell-class-name" = "ALSwitchCell";
+      "icon-size" = 30;
+      "suppress-hidden-apps" = 1;
+    },
+    {
+      title = "System Applications";
+      predicate = "isSystemApplication = TRUE";
+      "cell-class-name" = "ALSwitchCell";
+      "icon-size" = 30;
+      "suppress-hidden-apps" = 1;
+    }
+  );
+};

objc_funcs.h

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+FUNC(objc_msgSend                  , regular)
+FUNC(objc_msgSend_stret            , stret)
+FUNC(objc_msgSendSuper             , super)
+FUNC(objc_msgSendSuper_stret       , super_stret)