rocky
ad79c2ea13
- Rebuild the return-to-host whitelist from the CN/US top charts plus Apple system apps; drop the canOpenURL pre-check (LSApplicationQueriesSchemes is capped at 50) and let open() report failure. - Never record an OSG bundle id as the host to return to. - DEBUG only: probe the host bundle id through the keyboard arbiter callback and surface the log on a Home test card. Release builds keep the previous behaviour (no host identification).
134 lines
4.5 KiB
Objective-C
134 lines
4.5 KiB
Objective-C
// OSGHostArbiterProbe.m
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// OSGKeyboard · Keyboard Extension
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//
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// 临时调试探针（仅 DEBUG），见头文件说明。所有私有符号都在运行时按字符串查找，
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// 任何一步找不到都静默放弃，并保证原始实现照常执行。
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#import "OSGHostArbiterProbe.h"
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#ifdef DEBUG
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#import <UIKit/UIKit.h>
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#import <objc/message.h>
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#import <objc/runtime.h>
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#import <os/lock.h>
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static NSString *const kArbiterClientClassName = @"_UIKeyboardArbiterClient";
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static NSString *const kDestinationClassName = @"_UIKeyboardArbiterClientInputDestination";
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static NSString *const kEnabledSelectorName = @"enabled";
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static NSString *const kSharedClientSelectorName = @"automaticSharedArbiterClient";
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static NSString *const kCheckConnectionSelectorName = @"checkConnection";
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static NSString *const kKeyboardChangedSelectorName = @"queue_keyboardChanged:onComplete:";
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static NSString *const kSourceBundleIdKey = @"_sourceBundleIdentifier";
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static os_unfair_lock sLock = OS_UNFAIR_LOCK_INIT;
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static OSGHostArbiterCaptureHandler _Nullable sHandler = nil;
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static NSString *_Nullable sLastCapturedBundleId = nil;
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static IMP _Nullable sOriginalKeyboardChangedIMP = NULL;
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static BOOL sInstalled = NO;
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#pragma mark - Trampolines
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// 替换 -[_UIKeyboardArbiterClientInputDestination queue_keyboardChanged:onComplete:]。
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// bundle ID 在参数 change 上，不在 self 上。
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static void OSGSwizzledKeyboardChanged(id self, SEL _cmd, id change, id completion) {
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NSString *bundleId = nil;
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if (change) {
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@try {
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id value = [change valueForKey:kSourceBundleIdKey];
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if ([value isKindOfClass:[NSString class]]) {
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bundleId = [(NSString *)value copy];
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}
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} @catch (__unused NSException *exception) {
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// 字段改名时 KVC 会抛异常；吞掉，保证原始实现继续执行。
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}
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}
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NSString *detail = change ? NSStringFromClass([change class]) : @"change=nil";
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os_unfair_lock_lock(&sLock);
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// 读不到 ID 的回调同样覆盖旧值：宿主已经变了，旧 ID 不能再用。
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sLastCapturedBundleId = bundleId.length > 0 ? bundleId : nil;
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OSGHostArbiterCaptureHandler handler = sHandler;
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os_unfair_lock_unlock(&sLock);
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if (handler) {
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handler(bundleId, detail);
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}
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if (sOriginalKeyboardChangedIMP) {
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((void (*)(id, SEL, id, id))sOriginalKeyboardChangedIMP)(self, _cmd, change, completion);
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}
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}
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// 替换 +[_UIKeyboardArbiterClient enabled]：iOS 26.4 用它控制是否派发上面的回调。
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static BOOL OSGAlwaysEnabled(__unused id self, __unused SEL _cmd) {
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return YES;
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}
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@implementation OSGHostArbiterProbe
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+ (void)load {
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if (@available(iOS 26.4, *)) {
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[self installHooks];
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}
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}
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+ (void)installHooks {
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Class clientClass = NSClassFromString(kArbiterClientClassName);
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if (clientClass) {
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Method enabled = class_getClassMethod(clientClass, NSSelectorFromString(kEnabledSelectorName));
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if (enabled) {
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method_setImplementation(enabled, (IMP)&OSGAlwaysEnabled);
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}
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}
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Class destinationClass = NSClassFromString(kDestinationClassName);
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if (!destinationClass) return;
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Method keyboardChanged = class_getInstanceMethod(
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destinationClass,
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NSSelectorFromString(kKeyboardChangedSelectorName)
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);
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if (!keyboardChanged) return;
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sOriginalKeyboardChangedIMP = method_getImplementation(keyboardChanged);
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method_setImplementation(keyboardChanged, (IMP)&OSGSwizzledKeyboardChanged);
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sInstalled = YES;
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}
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+ (BOOL)isInstalled {
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return sInstalled;
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}
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+ (NSString *)lastCapturedBundleId {
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os_unfair_lock_lock(&sLock);
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NSString *bundleId = [sLastCapturedBundleId copy];
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os_unfair_lock_unlock(&sLock);
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return bundleId;
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}
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+ (void)invalidateCapturedBundleId {
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os_unfair_lock_lock(&sLock);
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sLastCapturedBundleId = nil;
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os_unfair_lock_unlock(&sLock);
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}
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+ (void)setCaptureHandler:(OSGHostArbiterCaptureHandler)handler {
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os_unfair_lock_lock(&sLock);
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sHandler = [handler copy];
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os_unfair_lock_unlock(&sLock);
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}
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+ (void)pingArbiter {
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Class clientClass = NSClassFromString(kArbiterClientClassName);
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SEL sharedSelector = NSSelectorFromString(kSharedClientSelectorName);
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if (!clientClass || ![clientClass respondsToSelector:sharedSelector]) return;
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id client = ((id (*)(id, SEL))objc_msgSend)(clientClass, sharedSelector);
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SEL checkSelector = NSSelectorFromString(kCheckConnectionSelectorName);
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if (client && [client respondsToSelector:checkSelector]) {
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((void (*)(id, SEL))objc_msgSend)(client, checkSelector);
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}
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}
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@end
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#endif
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