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pkg-actions.m
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pkg-actions.m
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#import <CoreFoundation/CFUserNotification.h>
#import <CoreFoundation/CoreFoundation.h>
#import <Foundation/Foundation.h>
#import <rootless.h>
#include <spawn.h>
#include <sys/stat.h>
#include <version.h>
#ifdef DEBUG
#define LOG(LogContents, ...) NSLog((@"[AppSync Unified] [pkg-actions] [%s] [L%d] " LogContents), __FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#define LOG(...)
#endif
#define DPKG_PATH ROOT_PATH("/var/lib/dpkg/info/ai.akemi.appsyncunified.list")
#define L_LAUNCHDAEMON_PATH "/Library/LaunchDaemons"
#define SL_LAUNCHDAEMON_PATH "/System" L_LAUNCHDAEMON_PATH
#define INSTALLD_PLIST_PATH_L ROOT_PATH(L_LAUNCHDAEMON_PATH) "/com.apple.mobile.installd.plist"
#define INSTALLD_PLIST_PATH_SL SL_LAUNCHDAEMON_PATH "/com.apple.mobile.installd.plist"
#define ASU_INJECT_PLIST_PATH ROOT_PATH(L_LAUNCHDAEMON_PATH) "/ai.akemi.asu_inject.plist"
#define ASU_INJECT_PLIST_PATH_OLD ROOT_PATH(L_LAUNCHDAEMON_PATH) "/net.angelxwind.asu_inject.plist"
typedef struct __CFUserNotification *CFUserNotificationRef;
FOUNDATION_EXTERN CFUserNotificationRef CFUserNotificationCreate(CFAllocatorRef allocator, CFTimeInterval timeout, CFOptionFlags flags, SInt32 *error, CFDictionaryRef dictionary);
FOUNDATION_EXTERN SInt32 CFUserNotificationReceiveResponse(CFUserNotificationRef userNotification, CFTimeInterval timeout, CFOptionFlags *responseFlags);
static int run_posix_spawn(const char *args[]) {
pid_t pid;
int status;
posix_spawn(&pid, args[0], NULL, NULL, (char* const*)args, NULL);
waitpid(pid, &status, 0);
return status;
}
static const char *determine_launchctl_path() {
// launchctl is shipped as part of the jailbreak bootstrap, not iOS itself.
// Some jailbreak bootstraps put launchctl inside /sbin instead of /bin for some reason, which is where it normally resides (at least on macOS).
if (access(ROOT_PATH("/bin/launchctl"), X_OK) == -1) {
return ROOT_PATH("/sbin/launchctl");
}
return ROOT_PATH("/bin/launchctl");
}
static int run_launchctl(const char *path, const char *cmd, bool is_installd) {
LOG("run_launchctl() %s %s\n", cmd, path);
const char *args[] = { determine_launchctl_path(), cmd, path, NULL };
return run_posix_spawn(args);
}
int main(int argc, const char **argv) {
@autoreleasepool {
#ifdef POSTINST
LOG("Running postinst…\n");
#else
LOG("Running prerm…\n");
#endif
printf("AppSync Unified\n");
printf("Copyright (C) 2014-2023 Karen/あけみ\n");
printf("** PLEASE DO NOT USE APPSYNC UNIFIED FOR PIRACY **\n");
if (access(DPKG_PATH, F_OK) == -1) {
printf("You seem to have installed AppSync Unified from an APT repository that is not cydia.akemi.ai.\n");
printf("Please make sure that you download AppSync Unified from the official repository to ensure proper operation.\n");
}
if (geteuid() != 0) {
printf("FATAL: This binary must be run as root. (… Actually, how are you even using dpkg without being root?)\n");
return 1;
}
if ((kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iOS_8_0) && (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber_iOS_10_0)) {
#ifdef POSTINST
if (access(INSTALLD_PLIST_PATH_L, F_OK) == -1) {
// NOTE: I thought about removing the symlinked installd plist in the prerm, but decided against it as such an operation has a non-zero chance of somehow going horribly wrong in some kind of edge case.
printf("This device appears to be running iOS 8 or 9. Creating a symbolic link to the installd LaunchDaemon…\n");
symlink(INSTALLD_PLIST_PATH_SL, INSTALLD_PLIST_PATH_L);
}
#endif
printf("Unloading and stopping the symlinked installd LaunchDaemon…\n");
run_launchctl(INSTALLD_PLIST_PATH_L, "unload", true);
printf("Reloading and starting the symlinked installd LaunchDaemon…\n");
run_launchctl(INSTALLD_PLIST_PATH_L, "load", true);
}
printf("Unloading and stopping the installd LaunchDaemon…\n");
run_launchctl(INSTALLD_PLIST_PATH_SL, "unload", true);
printf("Reloading and starting the installd LaunchDaemon…\n");
run_launchctl(INSTALLD_PLIST_PATH_SL, "load", true);
if (access(ASU_INJECT_PLIST_PATH_OLD, F_OK) != -1) {
// This case should never happen, but I'm adding this check here just in case someone somehow has their system in such a weird state.
printf("Found an old version of the asu_inject LaunchDaemon, unloading and removing it…\n");
run_launchctl(ASU_INJECT_PLIST_PATH_OLD, "unload", false);
unlink(ASU_INJECT_PLIST_PATH_OLD);
}
#ifdef __LP64__
printf("Removing the asu_inject LaunchDaemon, as it's not required on this system.\n");
unlink(ASU_INJECT_PLIST_PATH);
#else
if ((kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iOS_9_3) && (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber_iOS_10_0)) {
printf("This device is /probably/ running the Phœnix jailbreak (detected iOS 9.3.x and a 32-bit CPU architecture).\n");
printf("Due to a bug in Phœnix, the asu_inject LaunchDaemon (which launches /usr/bin/asu_inject once upon boot) is required in order to properly inject AppSync Unified into installd.\n");
// This path lookup does not need to be rootless-aware for obvious reasons, but we might as well do this just in case someone decides to release a rootless jailbreak for older iOS versions (… whyever anyone would ever want to do that).
if (access(ROOT_PATH("/usr/bin/cynject"), X_OK) != -1) {
printf("Found an executable copy of cynject on this device!\n");
chown(ASU_INJECT_PLIST_PATH, 0, 0);
chmod(ASU_INJECT_PLIST_PATH, 0644);
printf("Unloading and stopping the asu_inject LaunchDaemon…\n");
run_launchctl(ASU_INJECT_PLIST_PATH, "unload", false);
#ifdef POSTINST
printf("Reloading and starting the asu_inject LaunchDaemon…\n");
run_launchctl(ASU_INJECT_PLIST_PATH, "load", false);
#endif
} else {
// Just in case.
printf("Unable to find an executable copy of cynject on this device.\n");
printf("Removing the asu_inject LaunchDaemon…\n");
unlink(ASU_INJECT_PLIST_PATH);
}
}
#endif
printf("****** AppSync Unified installation complete! ******\n");
#ifdef POSTINST
// The CFUserNotification will only be shown if:
// ・The user is installing AppSync Unified using an APT frontend that supports the CYDIA environment variable (Cydia, Zebra, Sileo, etc.)
// ・The file /ai.akemi.appsyncunified.no-postinst-notification does not exist in the rootFS or the rootless prefix path.
// ※ This was originally used for KarenTools automated testing, but you can still use it to permanently silence the notification when using APT frontends.
if (getenv("CYDIA") != NULL && access(ROOT_PATH("/ai.akemi.appsyncunified.no-postinst-notification"), F_OK) == -1) {
// TODO: For some reason, this notification doesn't appear on my iOS 10 device. It's a minor bug though, so I'll allow it for now.
// … Even if that makes my perfectionist self scream in intense, agonising pain (🍍˃̶͈̀ロ˂̶͈́)੭ꠥ⁾⁾
// Construct the notification
CFUserNotificationRef postinstNotification = CFUserNotificationCreate(kCFAllocatorDefault, 0, 0, NULL, (__bridge CFDictionaryRef)[[NSDictionary alloc] initWithObjectsAndKeys:
[NSString stringWithFormat:@"%@ %@", (kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iOS_6_0) ? @"⚠️" : @"⚠", @"IMPORTANT NOTE 🍍"], @"AlertHeader",
@"If AppSync Unified is not working after installation, please reboot your device or perform a userspace reboot (launchctl reboot userspace, ldrestart, etc.) to activate it. You will only need to do this ONCE.", @"AlertMessage",
@"Okay, I understand! (🍍•̀ω•́)୨✨", @"DefaultButtonTitle", nil]);
// Display the notification using CFUserNotificationCreateRunLoopSource so we don't block the main thread
CFUserNotificationCreateRunLoopSource(kCFAllocatorDefault, postinstNotification, NULL, 0);
}
printf("※ IMPORTANT NOTE: If AppSync Unified is not working after installation, please reboot your device or perform a userspace reboot (launchctl reboot userspace, ldrestart, etc.) to activate it. You will only need to do this ONCE.\n");
#endif
}
return 0;
}