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Saagar Jha
8814c5ccd0
This is a workaround for https://bugs.webkit.org/show_bug.cgi?id=249976, which should fix #1937.
48 lines
1.5 KiB
Objective-C
48 lines
1.5 KiB
Objective-C
//
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// AccessibilityFixes.m
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// iSH
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//
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// Created by Saagar Jha on 12/31/22.
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//
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#import "hook.h"
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#import <UIKit/UIKit.h>
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#import <assert.h>
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#import <dlfcn.h>
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#import <objc/runtime.h>
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// Work around https://bugs.webkit.org/show_bug.cgi?id=249976, which causes
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// https://github.com/ish-app/ish/issues/1937.
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static void replacement(void) {
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NSLog(@"Hooked PageClientImpl::assistiveTechnologyMakeFirstResponder");
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}
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static bool patched;
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static void patch_if_needed(void) {
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if (!patched && UIAccessibilityIsVoiceOverRunning()) {
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patched = true;
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// This can take a little while.
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dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0), ^{
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Dl_info info;
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dladdr((__bridge void *)objc_getClass("WKWebView"), &info);
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void *symbol = find_symbol(info.dli_fbase, "__ZN6WebKit14PageClientImpl37assistiveTechnologyMakeFirstResponderEv");
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bool hooked = hook((void *)symbol, (void *)replacement);
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assert(hooked);
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});
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}
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}
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__attribute__((constructor)) void accessibilityfixes_init(void) {
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if (@available(iOS 15.7, *)) {
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[NSNotificationCenter.defaultCenter addObserverForName:UIAccessibilityVoiceOverStatusDidChangeNotification
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object:nil
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queue:nil
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usingBlock:^(NSNotification *notification) {
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patch_if_needed();
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}];
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patch_if_needed();
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}
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}
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