iOS 防止Crash之runtime
前言:
隨著app不斷的迭代，程式碼會變得越來越多，經過N個人的持續N年的程式碼，維護起來越來越難，也很難保證測試case覆蓋所有場景。舉一個例子：如果原來伺服器返回的是陣列，而現在返回字串，如果程式碼上沒有新增判斷，很可能就會造成“unrecognized selector sent to instance”，誰也不知道當初這麼寫的邏輯，沒人敢動老程式碼。幾萬甚至數十萬行的程式碼，這樣的風險不可避免。
希望就是儘量對原始碼少的改動，增加程式的健壯性，避免由於異常情況導致的crash。目前主要用到的原理就是通過方法替換和訊息轉發的機制，避免因為程式缺少判斷而導致crash。
本文的目的是:
- 優點:防止App使用上突然崩潰,主要利用runtime的swizzleMethod實現.
- 缺點:沒有做到crash日誌的有效定位和輸出儲存.
包含了Proxy、InstanceMethod、KVC、NSString、NSMutableString、NSMutableAttributedString、NSArray、NSMutableArray、NSData、NSMutableData、NSDictionary、NSMutableDictionary、NSSet、NSMutableSet、NSOrderedSet、NSMutableOrderedSet、NSUserDefaults、NSCache。
/**
* Warn: NSObjectSafe must used in MRC, otherwise it will cause
* strange release error: [UIKeyboardLayoutStar release]: message sent to deallocated instance
*/
#import <UIKit/UIKit.h>
@interface NSObject(Swizzle)
@end
#import "NSObjectSafe.h"
#import <objc/runtime.h>
#import <objc/message.h>
#if __has_feature(objc_arc)
//#error This file must be compiled with MRR. Use -fno-objc-arc flag.
#endif
NSString *const NSSafeSuffix = @"_NSSafe_";
NSString *const NSSafeNotification = @"_NSSafeNotification_";
void (^safeAssertCallback)(const char *, int, NSString *, ...);
#define SFAssert(condition, ...) \
if (!(condition)){ SFLog(__FILE__, __FUNCTION__, __LINE__, __VA_ARGS__); \
if (safeAssertCallback) safeAssertCallback(__FUNCTION__, __LINE__, __VA_ARGS__);} \
//NSAssert(condition, @"%@", __VA_ARGS__);
void SFLog(const char* file, const char* func, int line, NSString* fmt, ...)
{
va_list args; va_start(args, fmt);
NSLog(@"%s|%s|%d|%@", file, func, line, [[NSString alloc] initWithFormat:fmt arguments:args]);
va_end(args);
}
@interface NSSafeProxy : NSObject
@end
@implementation NSSafeProxy
- (void)dealException:(NSString*)info
{
NSString* msg = [NSString stringWithFormat:@"NSSafeProxy: %@", info];
SFAssert(0, msg);
}
@end
void swizzleClassMethod(Class cls, SEL origSelector, SEL newSelector)
{
if (!cls) return;
Method originalMethod = class_getClassMethod(cls, origSelector);
Method swizzledMethod = class_getClassMethod(cls, newSelector);
Class metacls = objc_getMetaClass(NSStringFromClass(cls).UTF8String);
if (class_addMethod(metacls,
origSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod)) ) {
/* swizzing super class method, added if not exist */
class_replaceMethod(metacls,
newSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
/* swizzleMethod maybe belong to super */
class_replaceMethod(metacls,
newSelector,
class_replaceMethod(metacls,
origSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod)),
method_getTypeEncoding(originalMethod));
}
}
void swizzleInstanceMethod(Class cls, SEL origSelector, SEL newSelector)
{
if (!cls) {
return;
}
/* if current class not exist selector, then get super*/
Method originalMethod = class_getInstanceMethod(cls, origSelector);
Method swizzledMethod = class_getInstanceMethod(cls, newSelector);
/* add selector if not exist, implement append with method */
if (class_addMethod(cls,
origSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod)) ) {
/* replace class instance method, added if selector not exist */
/* for class cluster , it always add new selector here */
class_replaceMethod(cls,
newSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
/* swizzleMethod maybe belong to super */
class_replaceMethod(cls,
newSelector,
class_replaceMethod(cls,
origSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod)),
method_getTypeEncoding(originalMethod));
}
}
@implementation NSObject(Swizzle)
+ (void)swizzleClassMethod:(SEL)origSelector withMethod:(SEL)newSelector
{
swizzleClassMethod(self.class, origSelector, newSelector);
}
- (void)swizzleInstanceMethod:(SEL)origSelector withMethod:(SEL)newSelector
{
swizzleInstanceMethod(self.class, origSelector, newSelector);
}
+ (void)setSafeAssertCallback:(void (^)(const char *, int, NSString *, ...))callback {
safeAssertCallback = [callback copy];
}
@end
@implementation NSObject(Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSObject* obj = [[NSObject alloc] init];
[obj swizzleInstanceMethod:@selector(addObserver:forKeyPath:options:context:) withMethod:@selector(hookAddObserver:forKeyPath:options:context:)];
[obj swizzleInstanceMethod:@selector(removeObserver:forKeyPath:) withMethod:@selector(hookRemoveObserver:forKeyPath:)];
[obj swizzleInstanceMethod:@selector(methodSignatureForSelector:) withMethod:@selector(hookMethodSignatureForSelector:)];
[obj swizzleInstanceMethod:@selector(forwardInvocation:) withMethod:@selector(hookForwardInvocation:)];
});
}
- (void)hookAddObserver:(NSObject *)observer forKeyPath:(NSString *)keyPath options:(NSKeyValueObservingOptions)options context:(void *)context
{
if (!observer || !keyPath.length) {
SFAssert(NO, @"hookAddObserver invalid args: %@", self);
return;
}
@try {
[self hookAddObserver:observer forKeyPath:keyPath options:options context:context];
}
@catch (NSException *exception) {
NSLog(@"hookAddObserver ex: %@", [exception callStackSymbols]);
}
}
- (void)hookRemoveObserver:(NSObject *)observer forKeyPath:(NSString *)keyPath
{
if (!observer || !keyPath.length) {
SFAssert(NO, @"hookRemoveObserver invalid args: %@", self);
return;
}
@try {
[self hookRemoveObserver:observer forKeyPath:keyPath];
}
@catch (NSException *exception) {
NSLog(@"hookRemoveObserver ex: %@", [exception callStackSymbols]);
}
}
- (NSMethodSignature*)hookMethodSignatureForSelector:(SEL)aSelector {
/* 如果 當前類有methodSignatureForSelector實現，NSObject的實現直接返回nil
* 子類實現如下：
* NSMethodSignature* sig = [super methodSignatureForSelector:aSelector];
* if (!sig) {
* //當前類的methodSignatureForSelector實現
* //如果當前類的methodSignatureForSelector也返回nil
* }
* return sig;
*/
NSMethodSignature* sig = [self hookMethodSignatureForSelector:aSelector];
if (!sig){
if (class_getMethodImplementation([NSObject class], @selector(methodSignatureForSelector:))
!= class_getMethodImplementation(self.class, @selector(methodSignatureForSelector:)) ){
return nil;
}
return [NSMethodSignature signatureWithObjCTypes:"v@:@"];
}
return sig;
}
- (void)hookForwardInvocation:(NSInvocation*)invocation
{
NSString* info = [NSString stringWithFormat:@"unrecognized selector [%@] sent to %@", NSStringFromSelector(invocation.selector), NSStringFromClass(self.class)];
[[NSNotificationCenter defaultCenter] postNotificationName:NSSafeNotification object:self userInfo:@{@"invocation":invocation}];
[[NSSafeProxy new] dealException:info];
}
@end
#pragma mark - NSString
@implementation NSString (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 類方法不用在NSMutableString裡再swizz一次 */
[NSString swizzleClassMethod:@selector(stringWithUTF8String:) withMethod:@selector(hookStringWithUTF8String:)];
[NSString swizzleClassMethod:@selector(stringWithCString:encoding:) withMethod:@selector(hookStringWithCString:encoding:)];
/* init方法 */
NSString* obj = [NSString alloc];//NSPlaceholderString
[obj swizzleInstanceMethod:@selector(initWithCString:encoding:) withMethod:@selector(hookInitWithCString:encoding:)];
/* _NSCFConstantString */
swizzleInstanceMethod(NSClassFromString(@"__NSCFConstantString"), @selector(substringFromIndex:), @selector(hookSubstringFromIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFConstantString"), @selector(substringToIndex:), @selector(hookSubstringToIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFConstantString"), @selector(substringWithRange:), @selector(hookSubstringWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFConstantString"), @selector(rangeOfString:options:range:locale:), @selector(hookRangeOfString:options:range:locale:));
/* NSTaggedPointerString */
swizzleInstanceMethod(NSClassFromString(@"NSTaggedPointerString"), @selector(substringFromIndex:), @selector(hookSubstringFromIndex:));
swizzleInstanceMethod(NSClassFromString(@"NSTaggedPointerString"), @selector(substringToIndex:), @selector(hookSubstringToIndex:));
swizzleInstanceMethod(NSClassFromString(@"NSTaggedPointerString"), @selector(substringWithRange:), @selector(hookSubstringWithRange:));
swizzleInstanceMethod(NSClassFromString(@"NSTaggedPointerString"), @selector(rangeOfString:options:range:locale:), @selector(hookRangeOfString:options:range:locale:));
});
}
+ (NSString*)hookStringWithUTF8String:(const char *)nullTerminatedCString
{
if (NULL != nullTerminatedCString) {
return [self hookStringWithUTF8String:nullTerminatedCString];
}
SFAssert(NO, @"NSString invalid args hookStringWithUTF8String nil cstring");
return nil;
}
+ (nullable instancetype)hookStringWithCString:(const char *)cString encoding:(NSStringEncoding)enc
{
if (NULL != cString){
return [self hookStringWithCString:cString encoding:enc];
}
SFAssert(NO, @"NSString invalid args hookStringWithCString nil cstring");
return nil;
}
- (nullable instancetype)hookInitWithCString:(const char *)nullTerminatedCString encoding:(NSStringEncoding)encoding
{
if (NULL != nullTerminatedCString){
return [self hookInitWithCString:nullTerminatedCString encoding:encoding];
}
SFAssert(NO, @"NSString invalid args hookInitWithCString nil cstring");
return nil;
}
- (NSString *)hookStringByAppendingString:(NSString *)aString
{
if (aString){
return [self hookStringByAppendingString:aString];
}
return self;
}
- (NSString *)hookSubstringFromIndex:(NSUInteger)from
{
if (from <= self.length) {
return [self hookSubstringFromIndex:from];
}
return nil;
}
- (NSString *)hookSubstringToIndex:(NSUInteger)to
{
if (to <= self.length) {
return [self hookSubstringToIndex:to];
}
return self;
}
- (NSString *)hookSubstringWithRange:(NSRange)range
{
if (range.location + range.length <= self.length) {
return [self hookSubstringWithRange:range];
}else if (range.location < self.length){
return [self hookSubstringWithRange:NSMakeRange(range.location, self.length-range.location)];
}
return nil;
}
- (NSRange)hookRangeOfString:(NSString *)searchString options:(NSStringCompareOptions)mask range:(NSRange)range locale:(nullable NSLocale *)locale
{
if (searchString){
if (range.location + range.length <= self.length) {
return [self hookRangeOfString:searchString options:mask range:range locale:locale];
}else if (range.location < self.length){
return [self hookRangeOfString:searchString options:mask range:NSMakeRange(range.location, self.length-range.location) locale:locale];
}
return NSMakeRange(NSNotFound, 0);
}else{
SFAssert(NO, @"hookRangeOfString:options:range:locale: searchString is nil");
return NSMakeRange(NSNotFound, 0);
}
}
@end
@implementation NSMutableString (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* init方法 */
NSMutableString* obj = [NSMutableString alloc];//NSPlaceholderMutableString
[obj swizzleInstanceMethod:@selector(initWithCString:encoding:) withMethod:@selector(hookInitWithCString:encoding:)];
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(appendString:), @selector(hookAppendString:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(insertString:atIndex:), @selector(hookInsertString:atIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(deleteCharactersInRange:), @selector(hookDeleteCharactersInRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(substringFromIndex:), @selector(hookSubstringFromIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(substringToIndex:), @selector(hookSubstringToIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(substringWithRange:), @selector(hookSubstringWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFString"), @selector(rangeOfString:options:range:locale:), @selector(hookRangeOfString:options:range:locale:));
});
}
- (nullable instancetype)hookInitWithCString:(const char *)nullTerminatedCString encoding:(NSStringEncoding)encoding
{
if (NULL != nullTerminatedCString){
return [self hookInitWithCString:nullTerminatedCString encoding:encoding];
}
SFAssert(NO, @"NSMutableString invalid args hookInitWithCString nil cstring");
return nil;
}
- (void)hookAppendString:(NSString *)aString
{
if (aString){
[self hookAppendString:aString];
}else{
SFAssert(NO, @"NSMutableString invalid args hookAppendString:[%@]", aString);
}
}
- (void)hookInsertString:(NSString *)aString atIndex:(NSUInteger)loc
{
if (aString && loc <= self.length) {
[self hookInsertString:aString atIndex:loc];
}else{
SFAssert(NO, @"NSMutableString invalid args hookInsertString:[%@] atIndex:[%@]", aString, @(loc));
}
}
- (void)hookDeleteCharactersInRange:(NSRange)range
{
if (range.location + range.length <= self.length){
[self hookDeleteCharactersInRange:range];
}else{
SFAssert(NO, @"NSMutableString invalid args hookDeleteCharactersInRange:[%@]", NSStringFromRange(range));
}
}
- (NSString *)hookStringByAppendingString:(NSString *)aString
{
if (aString){
return [self hookStringByAppendingString:aString];
}
return self;
}
- (NSString *)hookSubstringFromIndex:(NSUInteger)from
{
if (from <= self.length) {
return [self hookSubstringFromIndex:from];
}
return nil;
}
- (NSString *)hookSubstringToIndex:(NSUInteger)to
{
if (to <= self.length) {
return [self hookSubstringToIndex:to];
}
return self;
}
- (NSString *)hookSubstringWithRange:(NSRange)range
{
if (range.location + range.length <= self.length) {
return [self hookSubstringWithRange:range];
}else if (range.location < self.length){
return [self hookSubstringWithRange:NSMakeRange(range.location, self.length-range.location)];
}
return nil;
}
@end
#pragma mark - NSAttributedString
@implementation NSAttributedString (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* init方法 */
NSAttributedString* obj = [NSAttributedString alloc];
[obj swizzleInstanceMethod:@selector(initWithString:) withMethod:@selector(hookInitWithString:)];
/* 普通方法 */
obj = [[NSAttributedString alloc] init];
[obj swizzleInstanceMethod:@selector(attributedSubstringFromRange:) withMethod:@selector(hookAttributedSubstringFromRange:)];
[obj swizzleInstanceMethod:@selector(attribute:atIndex:effectiveRange:) withMethod:@selector(hookAttribute:atIndex:effectiveRange:)];
[obj swizzleInstanceMethod:@selector(enumerateAttribute:inRange:options:usingBlock:) withMethod:@selector(hookEnumerateAttribute:inRange:options:usingBlock:)];
[obj swizzleInstanceMethod:@selector(enumerateAttributesInRange:options:usingBlock:) withMethod:@selector(hookEnumerateAttributesInRange:options:usingBlock:)];
});
}
- (id)hookInitWithString:(NSString*)str {
if (str){
return [self hookInitWithString:str];
}
return nil;
}
- (id)hookAttribute:(NSAttributedStringKey)attrName atIndex:(NSUInteger)location effectiveRange:(nullable NSRangePointer)range
{
if (location < self.length){
return [self hookAttribute:attrName atIndex:location effectiveRange:range];
}else{
return nil;
}
}
- (NSAttributedString *)hookAttributedSubstringFromRange:(NSRange)range {
if (range.location + range.length <= self.length) {
return [self hookAttributedSubstringFromRange:range];
}else if (range.location < self.length){
return [self hookAttributedSubstringFromRange:NSMakeRange(range.location, self.length-range.location)];
}
return nil;
}
- (void)hookEnumerateAttribute:(NSString *)attrName inRange:(NSRange)range options:(NSAttributedStringEnumerationOptions)opts usingBlock:(void (^)(id _Nullable, NSRange, BOOL * _Nonnull))block
{
if (range.location + range.length <= self.length) {
[self hookEnumerateAttribute:attrName inRange:range options:opts usingBlock:block];
}else if (range.location < self.length){
[self hookEnumerateAttribute:attrName inRange:NSMakeRange(range.location, self.length-range.location) options:opts usingBlock:block];
}
}
- (void)hookEnumerateAttributesInRange:(NSRange)range options:(NSAttributedStringEnumerationOptions)opts usingBlock:(void (^)(NSDictionary<NSString*,id> * _Nonnull, NSRange, BOOL * _Nonnull))block
{
if (range.location + range.length <= self.length) {
[self hookEnumerateAttributesInRange:range options:opts usingBlock:block];
}else if (range.location < self.length){
[self hookEnumerateAttributesInRange:NSMakeRange(range.location, self.length-range.location) options:opts usingBlock:block];
}
}
@end
#pragma mark - NSMutableAttributedString
@implementation NSMutableAttributedString (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* init方法 */
NSMutableAttributedString* obj = [NSMutableAttributedString alloc];
[obj swizzleInstanceMethod:@selector(initWithString:) withMethod:@selector(hookInitWithString:)];
[obj swizzleInstanceMethod:@selector(initWithString:attributes:) withMethod:@selector(hookInitWithString:attributes:)];
/* 普通方法 */
obj = [[NSMutableAttributedString alloc] init];
[obj swizzleInstanceMethod:@selector(attributedSubstringFromRange:) withMethod:@selector(hookAttributedSubstringFromRange:)];
[obj swizzleInstanceMethod:@selector(attribute:atIndex:effectiveRange:) withMethod:@selector(hookAttribute:atIndex:effectiveRange:)];
[obj swizzleInstanceMethod:@selector(addAttribute:value:range:) withMethod:@selector(hookAddAttribute:value:range:)];
[obj swizzleInstanceMethod:@selector(addAttributes:range:) withMethod:@selector(hookAddAttributes:range:)];
[obj swizzleInstanceMethod:@selector(setAttributes:range:) withMethod:@selector(hookSetAttributes:range:)];
[obj swizzleInstanceMethod:@selector(removeAttribute:range:) withMethod:@selector(hookRemoveAttribute:range:)];
[obj swizzleInstanceMethod:@selector(deleteCharactersInRange:) withMethod:@selector(hookDeleteCharactersInRange:)];
[obj swizzleInstanceMethod:@selector(replaceCharactersInRange:withString:) withMethod:@selector(hookReplaceCharactersInRange:withString:)];
[obj swizzleInstanceMethod:@selector(replaceCharactersInRange:withAttributedString:) withMethod:@selector(hookReplaceCharactersInRange:withAttributedString:)];
[obj swizzleInstanceMethod:@selector(enumerateAttribute:inRange:options:usingBlock:) withMethod:@selector(hookEnumerateAttribute:inRange:options:usingBlock:)];
[obj swizzleInstanceMethod:@selector(enumerateAttributesInRange:options:usingBlock:) withMethod:@selector(hookEnumerateAttributesInRange:options:usingBlock:)];
});
}
- (id)hookInitWithString:(NSString*)str {
if (str){
return [self hookInitWithString:str];
}
return nil;
}
- (id)hookInitWithString:(NSString*)str attributes:(nullable NSDictionary*)attributes{
if (str){
return [self hookInitWithString:str attributes:attributes];
}
return nil;
}
- (NSAttributedString *)hookAttributedSubstringFromRange:(NSRange)range {
if (range.location + range.length <= self.length) {
return [self hookAttributedSubstringFromRange:range];
}else if (range.location < self.length){
return [self hookAttributedSubstringFromRange:NSMakeRange(range.location, self.length-range.location)];
}
return nil;
}
- (id)hookAttribute:(NSAttributedStringKey)attrName atIndex:(NSUInteger)location effectiveRange:(nullable NSRangePointer)range
{
if (location < self.length){
return [self hookAttribute:attrName atIndex:location effectiveRange:range];
}else{
return nil;
}
}
- (void)hookAddAttribute:(id)name value:(id)value range:(NSRange)range {
if (!range.length) {
[self hookAddAttribute:name value:value range:range];
}else if (value){
if (range.location + range.length <= self.length) {
[self hookAddAttribute:name value:value range:range];
}else if (range.location < self.length){
[self hookAddAttribute:name value:value range:NSMakeRange(range.location, self.length-range.location)];
}
}else {
SFAssert(NO, @"hookAddAttribute:value:range: value is nil");
}
}
- (void)hookAddAttributes:(NSDictionary<NSString *,id> *)attrs range:(NSRange)range {
if (!range.length) {
[self hookAddAttributes:attrs range:range];
}else if (attrs){
if (range.location + range.length <= self.length) {
[self hookAddAttributes:attrs range:range];
}else if (range.location < self.length){
[self hookAddAttributes:attrs range:NSMakeRange(range.location, self.length-range.location)];
}
}else{
SFAssert(NO, @"hookAddAttributes:range: attrs is nil");
}
}
- (void)hookSetAttributes:(NSDictionary<NSString *,id> *)attrs range:(NSRange)range {
if (!range.length) {
[self hookSetAttributes:attrs range:range];
}else if (attrs){
if (range.location + range.length <= self.length) {
[self hookSetAttributes:attrs range:range];
}else if (range.location < self.length){
[self hookSetAttributes:attrs range:NSMakeRange(range.location, self.length-range.location)];
}
}else{
SFAssert(NO, @"hookSetAttributes:range: attrs is nil");
}
}
- (void)hookRemoveAttribute:(id)name range:(NSRange)range {
if (!range.length) {
[self hookRemoveAttribute:name range:range];
}else if (name){
if (range.location + range.length <= self.length) {
[self hookRemoveAttribute:name range:range];
}else if (range.location < self.length) {
[self hookRemoveAttribute:name range:NSMakeRange(range.location, self.length-range.location)];
}
}else{
SFAssert(NO, @"hookRemoveAttribute:range: name is nil");
}
}
- (void)hookDeleteCharactersInRange:(NSRange)range {
if (range.location + range.length <= self.length) {
[self hookDeleteCharactersInRange:range];
}else if (range.location < self.length) {
[self hookDeleteCharactersInRange:NSMakeRange(range.location, self.length-range.location)];
}
}
- (void)hookReplaceCharactersInRange:(NSRange)range withString:(NSString *)str {
if (str){
if (range.location + range.length <= self.length) {
[self hookReplaceCharactersInRange:range withString:str];
}else if (range.location < self.length) {
[self hookReplaceCharactersInRange:NSMakeRange(range.location, self.length-range.location) withString:str];
}
}else{
SFAssert(NO, @"hookReplaceCharactersInRange:withString: str is nil");
}
}
- (void)hookReplaceCharactersInRange:(NSRange)range withAttributedString:(NSString *)str {
if (str){
if (range.location + range.length <= self.length) {
[self hookReplaceCharactersInRange:range withAttributedString:str];
}else if (range.location < self.length) {
[self hookReplaceCharactersInRange:NSMakeRange(range.location, self.length-range.location) withAttributedString:str];
}
}else{
SFAssert(NO, @"hookReplaceCharactersInRange:withString: str is nil");
}
}
- (void)hookEnumerateAttribute:(NSString*)attrName inRange:(NSRange)range options:(NSAttributedStringEnumerationOptions)opts usingBlock:(void (^)(id _Nullable, NSRange, BOOL * _Nonnull))block
{
if (range.location + range.length <= self.length) {
[self hookEnumerateAttribute:attrName inRange:range options:opts usingBlock:block];
}else if (range.location < self.length){
[self hookEnumerateAttribute:attrName inRange:NSMakeRange(range.location, self.length-range.location) options:opts usingBlock:block];
}
}
- (void)hookEnumerateAttributesInRange:(NSRange)range options:(NSAttributedStringEnumerationOptions)opts usingBlock:(void (^)(NSDictionary<NSString*,id> * _Nonnull, NSRange, BOOL * _Nonnull))block
{
if (range.location + range.length <= self.length) {
[self hookEnumerateAttributesInRange:range options:opts usingBlock:block];
}else if (range.location < self.length){
[self hookEnumerateAttributesInRange:NSMakeRange(range.location, self.length-range.location) options:opts usingBlock:block];
}
}
@end
#pragma mark - NSArray
@implementation NSArray (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 類方法不用在NSMutableArray裡再swizz一次 */
[NSArray swizzleClassMethod:@selector(arrayWithObject:) withMethod:@selector(hookArrayWithObject:)];
[NSArray swizzleClassMethod:@selector(arrayWithObjects:count:) withMethod:@selector(hookArrayWithObjects:count:)];
/* 沒內容型別是__NSArray0 */
swizzleInstanceMethod(NSClassFromString(@"__NSArray0"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArray0"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSArray0"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
/* 有內容obj型別才是__NSArrayI */
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
/* 有內容obj型別才是__NSArrayI_Transfer */
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI_Transfer"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI_Transfer"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayI_Transfer"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
/* iOS10 以上，單個內容型別是__NSSingleObjectArrayI */
swizzleInstanceMethod(NSClassFromString(@"__NSSingleObjectArrayI"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSSingleObjectArrayI"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSSingleObjectArrayI"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
/* __NSFrozenArrayM */
swizzleInstanceMethod(NSClassFromString(@"__NSFrozenArrayM"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSFrozenArrayM"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSFrozenArrayM"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
/* __NSArrayReversed */
swizzleInstanceMethod(NSClassFromString(@"__NSArrayReversed"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayReversed"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayReversed"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
});
}
+ (instancetype)hookArrayWithObject:(id)anObject
{
if (anObject) {
return [self hookArrayWithObject:anObject];
}
SFAssert(NO, @"NSArray invalid args hookArrayWithObject:[%@]", anObject);
return nil;
}
/* __NSArray0 沒有元素，也不可以變 */
- (id)hookObjectAtIndex0:(NSUInteger)index {
SFAssert(NO, @"NSArray invalid index:[%@]", @(index));
return nil;
}
- (id)hookObjectAtIndex:(NSUInteger)index {
if (index < self.count) {
return [self hookObjectAtIndex:index];
}
SFAssert(NO, @"NSArray invalid index:[%@]", @(index));
return nil;
}
- (id)hookObjectAtIndexedSubscript:(NSInteger)index {
if (index < self.count) {
return [self hookObjectAtIndexedSubscript:index];
}
SFAssert(NO, @"NSArray invalid index:[%@]", @(index));
return nil;
}
- (NSArray *)hookSubarrayWithRange:(NSRange)range
{
if (range.location + range.length <= self.count){
return [self hookSubarrayWithRange:range];
}else if (range.location < self.count){
return [self hookSubarrayWithRange:NSMakeRange(range.location, self.count-range.location)];
}
return nil;
}
+ (instancetype)hookArrayWithObjects:(const id [])objects count:(NSUInteger)cnt
{
NSInteger index = 0;
id objs[cnt];
for (NSInteger i = 0; i < cnt ; ++i) {
if (objects[i]) {
objs[index++] = objects[i];
}else {
SFAssert(NO, @"NSArray invalid args hookArrayWithObjects:[%@] atIndex:[%@]", objects[i], @(i));
}
}
return [self hookArrayWithObjects:objs count:index];
}
@end
@implementation NSMutableArray(Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* __NSArrayM */
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(addObject:), @selector(hookAddObject:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(insertObject:atIndex:), @selector(hookInsertObject:atIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(removeObjectAtIndex:), @selector(hookRemoveObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(replaceObjectAtIndex:withObject:), @selector(hookReplaceObjectAtIndex:withObject:));
swizzleInstanceMethod(NSClassFromString(@"__NSArrayM"), @selector(removeObjectsInRange:), @selector(hookRemoveObjectsInRange:));
/* __NSCFArray */
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(objectAtIndex:), @selector(hookObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(subarrayWithRange:), @selector(hookSubarrayWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(objectAtIndexedSubscript:), @selector(hookObjectAtIndexedSubscript:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(addObject:), @selector(hookAddObject:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(insertObject:atIndex:), @selector(hookInsertObject:atIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(removeObjectAtIndex:), @selector(hookRemoveObjectAtIndex:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(replaceObjectAtIndex:withObject:), @selector(hookReplaceObjectAtIndex:withObject:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFArray"), @selector(removeObjectsInRange:), @selector(hookRemoveObjectsInRange:));
});
}
- (void)hookAddObject:(id)anObject {
if (anObject) {
[self hookAddObject:anObject];
} else {
SFAssert(NO, @"NSMutableArray invalid args hookAddObject:[%@]", anObject);
}
}
- (id)hookObjectAtIndex:(NSUInteger)index {
if (index < self.count) {
return [self hookObjectAtIndex:index];
}
SFAssert(NO, @"NSArray invalid index:[%@]", @(index));
return nil;
}
- (id)hookObjectAtIndexedSubscript:(NSInteger)index {
if (index < self.count) {
return [self hookObjectAtIndexedSubscript:index];
}
SFAssert(NO, @"NSArray invalid index:[%@]", @(index));
return nil;
}
- (void)hookInsertObject:(id)anObject atIndex:(NSUInteger)index {
if (anObject && index <= self.count) {
[self hookInsertObject:anObject atIndex:index];
} else {
if (!anObject) {
SFAssert(NO, @"NSMutableArray invalid args hookInsertObject:[%@] atIndex:[%@]", anObject, @(index));
}
if (index > self.count) {
SFAssert(NO, @"NSMutableArray hookInsertObject[%@] atIndex:[%@] out of bound:[%@]", anObject, @(index), @(self.count));
}
}
}
- (void)hookRemoveObjectAtIndex:(NSUInteger)index {
if (index < self.count) {
[self hookRemoveObjectAtIndex:index];
} else {
SFAssert(NO, @"NSMutableArray hookRemoveObjectAtIndex:[%@] out of bound:[%@]", @(index), @(self.count));
}
}
- (void)hookReplaceObjectAtIndex:(NSUInteger)index withObject:(id)anObject {
if (index < self.count && anObject) {
[self hookReplaceObjectAtIndex:index withObject:anObject];
} else {
if (!anObject) {
SFAssert(NO, @"NSMutableArray invalid args hookReplaceObjectAtIndex:[%@] withObject:[%@]", @(index), anObject);
}
if (index >= self.count) {
SFAssert(NO, @"NSMutableArray hookReplaceObjectAtIndex:[%@] withObject:[%@] out of bound:[%@]", @(index), anObject, @(self.count));
}
}
}
- (void)hookRemoveObjectsInRange:(NSRange)range {
if (range.location + range.length <= self.count) {
[self hookRemoveObjectsInRange:range];
}else {
SFAssert(NO, @"NSMutableArray invalid args hookRemoveObjectsInRange:[%@]", NSStringFromRange(range));
}
}
- (NSArray *)hookSubarrayWithRange:(NSRange)range
{
if (range.location + range.length <= self.count){
return [self hookSubarrayWithRange:range];
}else if (range.location < self.count){
return [self hookSubarrayWithRange:NSMakeRange(range.location, self.count-range.location)];
}
return nil;
}
@end
#pragma mark - NSData
@implementation NSData (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
swizzleInstanceMethod(NSClassFromString(@"NSConcreteData"), @selector(subdataWithRange:), @selector(hookSubdataWithRange:));
swizzleInstanceMethod(NSClassFromString(@"NSConcreteData"), @selector(rangeOfData:options:range:), @selector(hookRangeOfData:options:range:));
swizzleInstanceMethod(NSClassFromString(@"NSConcreteMutableData"), @selector(subdataWithRange:), @selector(hookSubdataWithRange:));
swizzleInstanceMethod(NSClassFromString(@"NSConcreteMutableData"), @selector(rangeOfData:options:range:), @selector(hookRangeOfData:options:range:));
swizzleInstanceMethod(NSClassFromString(@"_NSZeroData"), @selector(subdataWithRange:), @selector(hookSubdataWithRange:));
swizzleInstanceMethod(NSClassFromString(@"_NSZeroData"), @selector(rangeOfData:options:range:), @selector(hookRangeOfData:options:range:));
swizzleInstanceMethod(NSClassFromString(@"_NSInlineData"), @selector(subdataWithRange:), @selector(hookSubdataWithRange:));
swizzleInstanceMethod(NSClassFromString(@"_NSInlineData"), @selector(rangeOfData:options:range:), @selector(hookRangeOfData:options:range:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFData"), @selector(subdataWithRange:), @selector(hookSubdataWithRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFData"), @selector(rangeOfData:options:range:), @selector(hookRangeOfData:options:range:));
});
}
- (NSData*)hookSubdataWithRange:(NSRange)range
{
if (range.location + range.length <= self.length){
return [self hookSubdataWithRange:range];
}else if (range.location < self.length){
return [self hookSubdataWithRange:NSMakeRange(range.location, self.length-range.location)];
}
return nil;
}
- (NSRange)hookRangeOfData:(NSData *)dataToFind options:(NSDataSearchOptions)mask range:(NSRange)searchRange
{
if (dataToFind){
if (searchRange.location + searchRange.length <= self.length) {
return [self hookRangeOfData:dataToFind options:mask range:searchRange];
}else if (searchRange.location < self.length){
return [self hookRangeOfData:dataToFind options:mask range:NSMakeRange(searchRange.location, self.length - searchRange.location) ];
}
return NSMakeRange(NSNotFound, 0);
}else{
SFAssert(NO, @"hookRangeOfData:options:range: dataToFind is nil");
return NSMakeRange(NSNotFound, 0);
}
}
@end
#pragma mark - NSMutableData
@implementation NSMutableData (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
swizzleInstanceMethod(NSClassFromString(@"NSConcreteMutableData"), @selector(resetBytesInRange:), @selector(hookResetBytesInRange:));
swizzleInstanceMethod(NSClassFromString(@"NSConcreteMutableData"), @selector(replaceBytesInRange:withBytes:), @selector(hookReplaceBytesInRange:withBytes:));
swizzleInstanceMethod(NSClassFromString(@"NSConcreteMutableData"), @selector(replaceBytesInRange:withBytes:length:), @selector(hookReplaceBytesInRange:withBytes:length:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFData"), @selector(resetBytesInRange:), @selector(hookResetBytesInRange:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFData"), @selector(replaceBytesInRange:withBytes:), @selector(hookReplaceBytesInRange:withBytes:));
swizzleInstanceMethod(NSClassFromString(@"__NSCFData"), @selector(replaceBytesInRange:withBytes:length:), @selector(hookReplaceBytesInRange:withBytes:length:));
});
}
- (void)hookResetBytesInRange:(NSRange)range
{
if (range.location + range.length <= self.length){
[self hookResetBytesInRange:range];
}else if (range.location < self.length){
[self hookResetBytesInRange:NSMakeRange(range.location, self.length-range.location)];
}
}
- (void)hookReplaceBytesInRange:(NSRange)range withBytes:(const void *)bytes
{
if (bytes){
if (range.location + range.length <= self.length) {
[self hookReplaceBytesInRange:range withBytes:bytes];
}else if (range.location < self.length){
[self hookReplaceBytesInRange:NSMakeRange(range.location, self.length - range.location) withBytes:bytes];
}
}else{
SFAssert(NO, @"hookReplaceBytesInRange:withBytes: bytes is nil");
}
}
- (void)hookReplaceBytesInRange:(NSRange)range withBytes:(const void *)bytes length:(NSUInteger)replacementLength
{
if (range.location + range.length <= self.length) {
[self hookReplaceBytesInRange:range withBytes:bytes length:replacementLength];
}else if (range.location < self.length){
[self hookReplaceBytesInRange:NSMakeRange(range.location, self.length - range.location) withBytes:bytes length:replacementLength];
}
}
@end
#pragma mark - NSDictionary
@implementation NSDictionary (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 類方法 */
[NSDictionary swizzleClassMethod:@selector(dictionaryWithObject:forKey:) withMethod:@selector(hookDictionaryWithObject:forKey:)];
[NSDictionary swizzleClassMethod:@selector(dictionaryWithObjects:forKeys:count:) withMethod:@selector(hookDictionaryWithObjects:forKeys:count:)];
});
}
+ (instancetype)hookDictionaryWithObject:(id)object forKey:(id)key
{
if (object && key) {
return [self hookDictionaryWithObject:object forKey:key];
}
SFAssert(NO, @"NSDictionary invalid args hookDictionaryWithObject:[%@] forKey:[%@]", object, key);
return nil;
}
+ (instancetype)hookDictionaryWithObjects:(const id [])objects forKeys:(const id [])keys count:(NSUInteger)cnt
{
NSInteger index = 0;
id ks[cnt];
id objs[cnt];
for (NSInteger i = 0; i < cnt ; ++i) {
if (keys[i] && objects[i]) {
ks[index] = keys[i];
objs[index] = objects[i];
++index;
}
}
return [self hookDictionaryWithObjects:objs forKeys:ks count:index];
}
@end
#pragma mark - NSMutableDictionary
@implementation NSMutableDictionary (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
swizzleInstanceMethod(NSClassFromString(@"__NSDictionaryM"), @selector(setObject:forKey:), @selector(hookSetObject:forKey:));
swizzleInstanceMethod(NSClassFromString(@"__NSDictionaryM"), @selector(removeObjectForKey:), @selector(hookRemoveObjectForKey:));
});
}
- (void)hookSetObject:(id)anObject forKey:(id)aKey {
if (anObject && aKey) {
[self hookSetObject:anObject forKey:aKey];
} else {
SFAssert(NO, @"NSMutableDictionary invalid args hookSetObject:[%@] forKey:[%@]", anObject, aKey);
}
}
- (void)hookRemoveObjectForKey:(id)aKey {
if (aKey) {
[self hookRemoveObjectForKey:aKey];
} else {
SFAssert(NO, @"NSMutableDictionary invalid args hookRemoveObjectForKey:[%@]", aKey);
}
}
@end
#pragma mark - NSSet
@implementation NSSet (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 類方法 */
[NSSet swizzleClassMethod:@selector(setWithObject:) withMethod:@selector(hookSetWithObject:)];
});
}
+ (instancetype)hookSetWithObject:(id)object
{
if (object){
return [self hookSetWithObject:object];
}
SFAssert(NO, @"NSSet invalid args hookSetWithObject:[%@]", object);
return nil;
}
@end
#pragma mark - NSMutableSet
@implementation NSMutableSet (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 普通方法 */
NSMutableSet* obj = [NSMutableSet setWithObjects:@0, nil];
[obj swizzleInstanceMethod:@selector(addObject:) withMethod:@selector(hookAddObject:)];
[obj swizzleInstanceMethod:@selector(removeObject:) withMethod:@selector(hookRemoveObject:)];
});
}
- (void)hookAddObject:(id)object {
if (object) {
[self hookAddObject:object];
} else {
SFAssert(NO, @"NSMutableSet invalid args hookAddObject[%@]", object);
}
}
- (void)hookRemoveObject:(id)object {
if (object) {
[self hookRemoveObject:object];
} else {
SFAssert(NO, @"NSMutableSet invalid args hookRemoveObject[%@]", object);
}
}
@end
#pragma mark - NSOrderedSet
@implementation NSOrderedSet (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 類方法 */
[NSOrderedSet swizzleClassMethod:@selector(orderedSetWithObject:) withMethod:@selector(hookOrderedSetWithObject:)];
/* init方法:[NSOrderedSet alloc] 和 [NSMutableOrderedSet alloc] 返回的類是一樣 */
NSOrderedSet* obj = [NSOrderedSet alloc];
[obj swizzleInstanceMethod:@selector(initWithObject:) withMethod:@selector(hookInitWithObject:)];
/* 普通方法 */
obj = [NSOrderedSet orderedSetWithObjects:@0, nil];
[obj swizzleInstanceMethod:@selector(objectAtIndex:) withMethod:@selector(hookObjectAtIndex:)];
});
}
+ (instancetype)hookOrderedSetWithObject:(id)object
{
if (object) {
return [self hookOrderedSetWithObject:object];
}
SFAssert(NO, @"NSOrderedSet invalid args hookOrderedSetWithObject:[%@]", object);
return nil;
}
- (instancetype)hookInitWithObject:(id)object
{
if (object){
return [self hookInitWithObject:object];
}
SFAssert(NO, @"NSOrderedSet invalid args hookInitWithObject:[%@]", object);
return nil;
}
- (id)hookObjectAtIndex:(NSUInteger)idx
{
if (idx < self.count){
return [self hookObjectAtIndex:idx];
}
return nil;
}
@end
#pragma mark - NSMutableOrderedSet
@implementation NSMutableOrderedSet (Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
/* 普通方法 */
NSMutableOrderedSet* obj = [NSMutableOrderedSet orderedSetWithObjects:@0, nil];
[obj swizzleInstanceMethod:@selector(objectAtIndex:) withMethod:@selector(hookObjectAtIndex:)];
[obj swizzleInstanceMethod:@selector(addObject:) withMethod:@selector(hookAddObject:)];
[obj swizzleInstanceMethod:@selector(removeObjectAtIndex:) withMethod:@selector(hookRemoveObjectAtIndex:)];
[obj swizzleInstanceMethod:@selector(insertObject:atIndex:) withMethod:@selector(hookInsertObject:atIndex:)];
[obj swizzleInstanceMethod:@selector(replaceObjectAtIndex:withObject:) withMethod:@selector(hookReplaceObjectAtIndex:withObject:)];
});
}
- (id)hookObjectAtIndex:(NSUInteger)idx
{
if (idx < self.count){
return [self hookObjectAtIndex:idx];
}
return nil;
}
- (void)hookAddObject:(id)object {
if (object) {
[self hookAddObject:object];
} else {
SFAssert(NO, @"NSMutableOrderedSet invalid args hookAddObject:[%@]", object);
}
}
- (void)hookInsertObject:(id)object atIndex:(NSUInteger)idx
{
if (object && idx <= self.count) {
[self hookInsertObject:object atIndex:idx];
}else{
SFAssert(NO, @"NSMutableOrderedSet invalid args hookInsertObject:[%@] atIndex:[%@]", object, @(idx));
}
}
- (void)hookRemoveObjectAtIndex:(NSUInteger)idx
{
if (idx < self.count){
[self hookRemoveObjectAtIndex:idx];
}else{
SFAssert(NO, @"NSMutableOrderedSet invalid args hookRemoveObjectAtIndex:[%@]", @(idx));
}
}
- (void)hookReplaceObjectAtIndex:(NSUInteger)idx withObject:(id)object
{
if (object && idx < self.count) {
[self hookReplaceObjectAtIndex:idx withObject:object];
}else{
SFAssert(NO, @"NSMutableOrderedSet invalid args hookReplaceObjectAtIndex:[%@] withObject:[%@]", @(idx), object);
}
}
@end
#pragma mark - NSUserDefaults
@implementation NSUserDefaults(Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSUserDefaults* obj = [[NSUserDefaults alloc] init];
[obj swizzleInstanceMethod:@selector(objectForKey:) withMethod:@selector(hookObjectForKey:)];
[obj swizzleInstanceMethod:@selector(setObject:forKey:) withMethod:@selector(hookSetObject:forKey:)];
[obj swizzleInstanceMethod:@selector(removeObjectForKey:) withMethod:@selector(hookRemoveObjectForKey:)];
[obj swizzleInstanceMethod:@selector(integerForKey:) withMethod:@selector(hookIntegerForKey:)];
[obj swizzleInstanceMethod:@selector(boolForKey:) withMethod:@selector(hookBoolForKey:)];
});
}
- (id)hookObjectForKey:(NSString *)defaultName
{
if (defaultName) {
return [self hookObjectForKey:defaultName];
}
return nil;
}
- (NSInteger)hookIntegerForKey:(NSString *)defaultName
{
if (defaultName) {
return [self hookIntegerForKey:defaultName];
}
return 0;
}
- (BOOL)hookBoolForKey:(NSString *)defaultName
{
if (defaultName) {
return [self hookBoolForKey:defaultName];
}
return NO;
}
- (void)hookSetObject:(id)value forKey:(NSString*)aKey
{
if (aKey) {
[self hookSetObject:value forKey:aKey];
} else {
SFAssert(NO, @"NSUserDefaults invalid args hookSetObject:[%@] forKey:[%@]", value, aKey);
}
}
- (void)hookRemoveObjectForKey:(NSString*)aKey
{
if (aKey) {
[self hookRemoveObjectForKey:aKey];
} else {
SFAssert(NO, @"NSUserDefaults invalid args hookRemoveObjectForKey:[%@]", aKey);
}
}
@end
#pragma mark - NSCache
@implementation NSCache(Safe)
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSCache* obj = [[NSCache alloc] init];
[obj swizzleInstanceMethod:@selector(setObject:forKey:) withMethod:@selector(hookSetObject:forKey:)];
[obj swizzleInstanceMethod:@selector(setObject:forKey:cost:) withMethod:@selector(hookSetObject:forKey:cost:)];
});
}
- (void)hookSetObject:(id)obj forKey:(id)key // 0 cost
{
if (obj && key) {
[self hookSetObject:obj forKey:key];
}else {
SFAssert(NO, @"NSCache invalid args hookSetObject:[%@] forKey:[%@]", obj, key);
}
}
- (void)hookSetObject:(id)obj forKey:(id)key cost:(NSUInteger)g
{
if (obj && key) {
[self hookSetObject:obj forKey:key cost:g];
}else {
SFAssert(NO, @"NSCache invalid args hookSetObject:[%@] forKey:[%@] cost:[%@]", obj, key, @(g));
}
}
@end
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