Rocky
e09ad34437
Keyboard
- Only jump to the app when the voice surface is shown (tab tap / opened
there); typing tabs no longer leave the host on keyboard open.
- Wait up to 0.4 s for the arbiter to report the host app before leaving,
and late-bind an id that arrives within 6 s of the jump.
- Empty arbiter callbacks no longer wipe an already captured host id;
install the capture handler in every build configuration.
App
- Return to the previous app with up to four retries using iOS's real
open result, and honor the skip-app-switch preference.
- Keep the pending host id across cold-start zombie reconciliation, and
expire it after two minutes (legacy values without a timestamp stay valid).
- Show a light tip pointing at the system back control when we cannot
return automatically ("点击返回，立即使用").
Tests: TTL behaviour and return retry policy.
134 lines
4.8 KiB
Objective-C
134 lines
4.8 KiB
Objective-C
// OSGHostArbiterProbe.m
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// OSGKeyboard · Keyboard Extension
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//
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// 宿主识别探针（所有构建配置均编译），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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#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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// 只在读到有效 ID 时更新。读不到 ID 的回调（焦点切换、空事件）不再清掉已拿到的值：
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// 之前“最后一个事件为准”会让一次空回调把正确的宿主抹掉，是识别忽有忽无的来源之一。
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// 宿主真的变了，由键盘收起时的 invalidateCapturedBundleId 作废旧值。
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if (bundleId.length > 0) {
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sLastCapturedBundleId = bundleId;
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}
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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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