[AltServer] Uses GrandSlam Authentication

Uses Mail.app plug-in to retrieve the computer’s anisette data, which is necessary for GSA.

AltPlugin/ALTPluginService.m

@@ -0,0 +1,99 @@
+//
+//  ALTPluginService.m
+//  AltPlugin
+//
+//  Created by Riley Testut on 11/14/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+#import "ALTPluginService.h"
+
+#import <dlfcn.h>
+
+#import "ALTAnisetteData.h"
+
+@import AppKit;
+
+@interface AKAppleIDSession : NSObject
+- (id)appleIDHeadersForRequest:(id)arg1;
+@end
+
+@interface AKDevice
++ (AKDevice *)currentDevice;
+- (NSString *)uniqueDeviceIdentifier;
+- (NSString *)serialNumber;
+- (NSString *)serverFriendlyDescription;
+@end
+
+@interface ALTPluginService ()
+
+@property (nonatomic, readonly) NSISO8601DateFormatter *dateFormatter;
+
+@end
+
+@implementation ALTPluginService
+
++ (instancetype)sharedService
+{
+    static ALTPluginService *_service = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _service = [[self alloc] init];
+    });
+    
+    return _service;
+}
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self)
+    {
+        _dateFormatter = [[NSISO8601DateFormatter alloc] init];
+    }
+    
+    return self;
+}
+
++ (void)initialize
+{
+    [[ALTPluginService sharedService] start];
+}
+
+- (void)start
+{
+    dlopen("/System/Library/PrivateFrameworks/AuthKit.framework/AuthKit", RTLD_NOW);
+    
+    [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(receiveNotification:) name:@"com.rileytestut.AltServer.FetchAnisetteData" object:nil];
+}
+
+- (void)receiveNotification:(NSNotification *)notification
+{
+    NSString *requestUUID = notification.userInfo[@"requestUUID"];
+    
+    NSMutableURLRequest* req = [[NSMutableURLRequest alloc] initWithURL:[[NSURL alloc] initWithString:@"https://developerservices2.apple.com/services/QH65B2/listTeams.action?clientId=XABBG36SBA"]];
+    [req setHTTPMethod:@"POST"];
+
+    AKAppleIDSession *session = [[NSClassFromString(@"AKAppleIDSession") alloc] initWithIdentifier:@"com.apple.gs.xcode.auth"];
+    NSDictionary *headers = [session appleIDHeadersForRequest:req];
+
+    AKDevice *device = [NSClassFromString(@"AKDevice") currentDevice];
+    NSDate *date = [self.dateFormatter dateFromString:headers[@"X-Apple-I-Client-Time"]];
+    
+    ALTAnisetteData *anisetteData = [[NSClassFromString(@"ALTAnisetteData") alloc] initWithMachineID:headers[@"X-Apple-I-MD-M"]
+                                                                                     oneTimePassword:headers[@"X-Apple-I-MD"]
+                                                                                         localUserID:headers[@"X-Apple-I-MD-LU"]
+                                                                                         routingInfo:[headers[@"X-Apple-I-MD-RINFO"] longLongValue]
+                                                                              deviceUniqueIdentifier:device.uniqueDeviceIdentifier
+                                                                                  deviceSerialNumber:device.serialNumber
+                                                                                   deviceDescription:device.serverFriendlyDescription
+                                                                                                date:date
+                                                                                              locale:[NSLocale currentLocale]
+                                                                                            timeZone:[NSTimeZone localTimeZone]];
+    
+    NSData *data = [NSKeyedArchiver archivedDataWithRootObject:anisetteData requiringSecureCoding:YES error:nil];
+    
+    [[NSDistributedNotificationCenter defaultCenter] postNotificationName:@"com.rileytestut.AltServer.AnisetteDataResponse" object:nil userInfo:@{@"requestUUID": requestUUID, @"anisetteData": data} deliverImmediately:YES];
+}
+
+@end