%hook
指定需要hook的class,必須以％end結尾。
// hook SpringBoard類里面的_menuButtonDown函數(shù),先打印一句話,再之子那個函數(shù)原始的操作
%hook SpringBorad
- (void)_menuButtonDown:(id)down
{
NSLog(@"111111");
%orig; // 調(diào)用原始的_menuButtonDown函數(shù)
}
%end
%log
該指令在%hook內(nèi)部使用，將函數(shù)的類名齐蔽、參數(shù)等信息寫入syslog,可以％log([(),…..])的格式追加其他打印信息两疚。
%hook SpringBorad
- (void)_menuButtonDown:(id)down
{
%log((NSString *)@"iosre",(NSString *)@"Debug");
%orig; // 調(diào)用原始的_menuButtonDown方法
}
%end
%orig
該指令在%hook內(nèi)部使用，執(zhí)行被hook的函數(shù)的原始代碼含滴；也可以用％orig更改原始函數(shù)的參數(shù)诱渤。
%hook SpringBorad
- (void)setCustomSubtitleText:(id)arg1 withColor: (id)arg2
{
%orig(@"change arg2",arg2);// 將arg2的參數(shù)修 改為"change arg2"
}
%end
%group
該指令用于將%hook分組，便于代碼管理及按條件初始化分組谈况，必須以%end結尾勺美。
一個％group可以包含多個%hook,所有不屬于某個自定義group的％hook會被隱式歸類到％group_ungrouped中。
/*
在%group iOS7Hook中鉤住iOS7Class的iOS7Method,在%group iOS8Class中鉤住iOS8Method函數(shù),然后在%group _ungroup中鉤住SpringBoard類的powerDown函數(shù).
*/
%group iOS7Hook
%hook iOS7Class
- (id)ios7Method
{
id result = %orig;
NSLog(@"這個方法只有iOS7適用");
return result;
}
%end
%end // iOS7Method
%group iOS8Hook
%hook iOS8Class
- (id)ios8Method
{
id result = %orig;
NSLog(@"這個方法只有iOS7適用");
return result;
}
%end
%end // iOS8Method
%hook SpringBoard
- (void)powerDown
{
%orig;
}
%end
%init
該指令用于初始化某個％group碑韵，必須在%hook或％ctor內(nèi)調(diào)用赡茸；如果帶參數(shù)，則初始化指定的group泼诱，如果不帶參數(shù)坛掠，則初始化_ungrouped.
注：
切記，只有調(diào)用了％init,對應的%group才能起作用治筒！
#ifndef KCFCoreFoundationVersionNumber_iOS_8_0
#define KCFCoreFoundationVersionNumber_iOS_8_0 1140.10
#endif
- (void)applicationDidFinishLaunching:(UIApplication *)application
{
%orig;
%init; // Equals to init(_ungrouped)
if (KCFCoreFoundationVersionNumber >= KCFCoreFoundationVersionNumber_iOS_7_0 && KCFCoreFoundationVersionNumber > KCFCoreFoundationVersionNumber_iOS_8_0)
%init(iOS7Hook);
if (KCFCoreFoundationVersionNumber >= KCFCoreFoundationVersionNumber_iOS_8_0)
%init(iOS8Hook);
}
%end
%ctor
tweak的constructor,完成初始化工作；如果不顯示定義舷蒲，Theos會自動生成一個%ctor,并在其中調(diào)用%init(_ungrouped)耸袜。%ctor一般可以用來初始化%group,以及進行MSHookFunction等操作,如下:
#ifndef KCFCoreFoundationVersionNumber_iOS_8_0
#define KCFCoreFoundationVersionNumber_iOS_8_0 1140.10
#endif
%ctor
{
%init;
if (KCFCoreFoundationVersionNumber >= KCFCoreFoundationVersionNumber_iOS_7_0 && KCFCoreFoundationVersionNumber > KCFCoreFoundationVersionNumber_iOS_8_0)
%init(iOS7Hook);
if (KCFCoreFoundationVersionNumber >= KCFCoreFoundationVersionNumber_iOS_8_0)
%init(iOS8Hook);
MSHookFunction((void *)&AudioServicesPlaySystemSound,(void *)&replaced_AudioServerPlaySystemSound,(void **)&orginal_AudioServicesPlaySystemSound);
}
%new
在%hook內(nèi)部使用，給一個現(xiàn)有class添加新函數(shù)牲平，功能與class_addMethod相同.
注：
Objective-C的category與class_addMethod的區(qū)別：
前者是靜態(tài)的而后者是動態(tài)的堤框。使用%new添加,而不需要向.h文件中添加函數(shù)聲明,如果使用category,可能與遇到這樣那樣的錯誤.
%hook SpringBoard
%new
- (void)addNewMethod
{
NSLog(@"動態(tài)添加一個方法到SpringBoard");
}
%end
%c
該指令的作用等同于objc_getClass或NSClassFromString,即動態(tài)獲取一個類的定義，在%hook或％ctor內(nèi)使用 纵柿。 動態(tài)獲取一個類,如果用’+’標記,則獲取類的對象,如果用’-’標記則獲取實例對象,默認是’-’
%property
Add a property to a %subclass just like you would with @property to a normal Objective-C subclass as well as adding new properties to existing classes within %hook.
%property (nonatomic|assign|retain|copy|weak|strong|getter|setter) Type name;
%subclass
Subclass block - the class is created at runtime and populated with methods. ivars are not yet supported (use associated objects). The %new specifier is needed for a method that doesn't exist in the superclass. To instantiate an object of the new class, you can use the %c operator.
Can be inside a %group block.
%subclass MyObject : NSObject
- (id)init {
self = %orig;
[self setSomeValue:@"value"];
return self;
}
//the following two new methods act as `@property (nonatomic, retain) id someValue;`
%new
- (id)someValue {
return objc_getAssociatedObject(self, @selector(someValue));
}
%new
- (void)setSomeValue:(id)value {
objc_setAssociatedObject(self, @selector(someValue), value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
%end
%ctor {
MyObject *myObject = [[%c(MyObject) alloc] init];
NSLog(@"myObject: %@", [myObject someValue]);
}
