emojiport_fix_ios26.x

gistfile1.txt

#import <Foundation/Foundation.h>
#import <CoreFoundation/CoreFoundation.h>
#import <CoreText/CoreText.h>
#import <substrate.h>
#import <dlfcn.h>
#import <os/log.h>

#define EFMLog(fmt, ...) os_log_fault(OS_LOG_DEFAULT, "EmojiPort26 - " fmt, ##__VA_ARGS__)

// New Emoji 17.0 codepoints (iOS 26.4) that need to be added to the character set on iOS 26.2
static const UInt32 kNewEmoji17Codepoints[] = {
    0x1F6D8,  // Landslide
    0x1F7F0,  // Heavy Equals Sign (if not already present)
    0x1FA8A,  // Trombone
    0x1FA8E,  // Treasure Chest
    0x1FAC8,  // Hairy Creature (Bigfoot)
    0x1FACD,  // Orca
    0x1FAEA,  // Distorted Face
    0x1FAEF,  // Fight Cloud
};
static const int kNewEmoji17Count = sizeof(kNewEmoji17Codepoints) / sizeof(kNewEmoji17Codepoints[0]);

// Ballet Dancer ZWJ base (U+1F9D1 U+200D U+1FA70) - the base codepoint U+1FA70 might need to be in the set
static const UInt32 kNewEmoji17Extra[] = {
    0x1FA70,  // Ballet shoes (for ballet dancer ZWJ sequence)
};
static const int kNewEmoji17ExtraCount = sizeof(kNewEmoji17Extra) / sizeof(kNewEmoji17Extra[0]);

#pragma mark - CoreText Character Set Hook

// Hook CreateCharacterSetForFont to add new emoji codepoints
%group CharacterSetHook

CFCharacterSetRef (*CreateCharacterSetForFont)(CFStringRef const) = NULL;
CFCharacterSetRef (*CreateCharacterSetWithCompressedBitmapRepresentation)(const CFDataRef) = NULL;

%hookf(CFCharacterSetRef, CreateCharacterSetForFont, CFStringRef const fontName) {
    CFCharacterSetRef origSet = %orig(fontName);

    // Only modify for AppleColorEmoji
    if (!fontName) return origSet;
    if (!CFEqual(fontName, CFSTR("AppleColorEmoji")) &&
        !CFEqual(fontName, CFSTR(".AppleColorEmojiUI")))
        return origSet;

    // Create mutable copy and add new codepoints
    CFMutableCharacterSetRef newSet = CFCharacterSetCreateMutableCopy(kCFAllocatorDefault, origSet);
    for (int i = 0; i < kNewEmoji17Count; i++) {
        CFCharacterSetAddCharactersInRange(newSet, CFRangeMake(kNewEmoji17Codepoints[i], 1));
    }
    for (int i = 0; i < kNewEmoji17ExtraCount; i++) {
        CFCharacterSetAddCharactersInRange(newSet, CFRangeMake(kNewEmoji17Extra[i], 1));
    }

    EFMLog("[EmojiPort26] Added %d new Emoji 17.0 codepoints to %@ character set",
          kNewEmoji17Count + kNewEmoji17ExtraCount, fontName);

    return newSet;
}

%end

#pragma mark - ICU Emoji Property Hook

// Hook u_hasBinaryProperty to recognize new emoji codepoints
%group ICUHook

static BOOL isNewEmoji17(UInt32 c) {
    for (int i = 0; i < kNewEmoji17Count; i++) {
        if (c == kNewEmoji17Codepoints[i]) return YES;
    }
    for (int i = 0; i < kNewEmoji17ExtraCount; i++) {
        if (c == kNewEmoji17Extra[i]) return YES;
    }
    return NO;
}

// UProperty constants from ICU
#define UCHAR_EMOJI 57
#define UCHAR_EMOJI_PRESENTATION 58
#define UCHAR_EXTENDED_PICTOGRAPHIC 64
#define UCHAR_BASIC_EMOJI 65
#define UCHAR_RGI_EMOJI 71

typedef int8_t UBool;
typedef int32_t UChar32;
typedef int32_t UProperty;

UBool (*orig_u_hasBinaryProperty)(UChar32, UProperty) = NULL;
UBool hook_u_hasBinaryProperty(UChar32 c, UProperty which) {
    if (isNewEmoji17(c)) {
        switch (which) {
            case UCHAR_EMOJI:
            case UCHAR_EMOJI_PRESENTATION:
            case UCHAR_EXTENDED_PICTOGRAPHIC:
            case UCHAR_BASIC_EMOJI:
            case UCHAR_RGI_EMOJI:
                return 1;
        }
    }
    return orig_u_hasBinaryProperty(c, which);
}

%end

#pragma mark - Constructor

%ctor {
    @autoreleasepool {
        EFMLog("[EmojiPort26] Initializing Emoji 17.0 support for iOS 26.2");

        // Hook CreateCharacterSetForFont in CoreText
        // Use raw path - CoreText is in the shared cache, ROOT_PATH not needed
        MSImageRef ct = MSGetImageByName("/System/Library/Frameworks/CoreText.framework/CoreText");
        if (ct) {
            CreateCharacterSetForFont = (CFCharacterSetRef (*)(CFStringRef const))MSFindSymbol(ct, "__Z25CreateCharacterSetForFontPK10__CFString");
            CreateCharacterSetWithCompressedBitmapRepresentation = (CFCharacterSetRef (*)(const CFDataRef))MSFindSymbol(ct, "__Z52CreateCharacterSetWithCompressedBitmapRepresentationPK8__CFData");

            if (CreateCharacterSetForFont) {
                EFMLog("[EmojiPort26] Hooking CreateCharacterSetForFont");
                %init(CharacterSetHook);
            } else {
                EFMLog("[EmojiPort26] CreateCharacterSetForFont not found!");
            }
        }

        // Hook u_hasBinaryProperty in libicucore
        MSImageRef icu = MSGetImageByName("/usr/lib/libicucore.A.dylib");
        if (icu) {
            void *sym = MSFindSymbol(icu, "_u_hasBinaryProperty");
            if (sym) {
                EFMLog("[EmojiPort26] Hooking u_hasBinaryProperty");
                MSHookFunction(sym, (void *)&hook_u_hasBinaryProperty, (void **)&orig_u_hasBinaryProperty);
            } else {
                EFMLog("[EmojiPort26] u_hasBinaryProperty not found, trying dlsym");
                void *icuHandle = dlopen("/usr/lib/libicucore.A.dylib", RTLD_LAZY);
                if (icuHandle) {
                    sym = dlsym(icuHandle, "u_hasBinaryProperty");
                    if (sym) {
                        EFMLog("[EmojiPort26] Hooking u_hasBinaryProperty via dlsym");
                        MSHookFunction(sym, (void *)&hook_u_hasBinaryProperty, (void **)&orig_u_hasBinaryProperty);
                    } else {
                        EFMLog("[EmojiPort26] u_hasBinaryProperty not found via dlsym either");
                    }
                }
            }
        }

        // Write debug to /tmp (writable by all)
        NSMutableString *debugLog = [NSMutableString string];
        [debugLog appendFormat:@"[%@] EmojiPort26 loaded in %@\n", [NSDate date], [[NSProcessInfo processInfo] processName]];
        [debugLog appendFormat:@"CreateCharacterSetForFont: %p\n", CreateCharacterSetForFont];
        [debugLog appendFormat:@"u_hasBinaryProperty hooked: %d\n", orig_u_hasBinaryProperty != NULL];
        [debugLog appendString:@"---\n"];
        NSString *logPath = @"/tmp/EmojiPort26_test";
        NSFileHandle *fh = [NSFileHandle fileHandleForWritingAtPath:logPath];
        if (!fh) {
            [[NSFileManager defaultManager] createFileAtPath:logPath contents:nil attributes:nil];
            fh = [NSFileHandle fileHandleForWritingAtPath:logPath];
        }
        [fh seekToEndOfFile];
        [fh writeData:[debugLog dataUsingEncoding:NSUTF8StringEncoding]];
        [fh closeFile];
    }
}