Support for the corner home button on an iOS keyboard to act as an escape key by analysing Bluetooth packets

iOSKeyboardEscapeKeyEnablerBluetooth.c

// clang -framework Carbon iOSKeyboardEscapeKeyEnablerBluetooth.c -o iOSKeyboardEscapeKeyEnablerBluetooth
// sudo ./iOSKeyboardEscapeKeyEnablerBluetooth

#include <stdio.h>
#include <stdlib.h>
#include <Carbon/Carbon.h>

void TriggerEscKey()
{
    CGEventRef event;
    event = CGEventCreateKeyboardEvent(NULL, (CGKeyCode)kVK_Escape, true);
    CGEventPost(kCGSessionEventTap, event);
}

int main()
{
    FILE* fp;
    char path[1035];

    fp = popen("sudo /Applications/PacketLogger.app/Contents/Resources/packetlogger 2>/dev/null | grep --line-buffered 'A1.*03.*01 00 00'", "r");
    if (fp == NULL) {
        printf("Failed to run command\n");
        exit(1);
    }

    while (fgets(path, sizeof(path) - 1, fp) != NULL) {
        TriggerEscKey();
    }

    pclose(fp);
}