ios - 由于 keychainItemWrapper 导致临时 iOS 应用程序崩溃

Question

当我从 XCode 运行我的应用程序时它没有崩溃，但我创建了一个 IPA 以与 TestFlight 一起使用，并且它在用户尝试登录应用程序后崩溃。我相信这是由于使用了此处定义的 keychainItemWrapper 库:https://gist.github.com/dhoerl/1170641

这是我的崩溃报告的样子:

Incident Identifier: 906A698B-555F-4922-8596-27FE481E9522
CrashReporter Key:   8722e51d4300c003d1ac939808b1a9c67f112194
Hardware Model:      iPhone6,1
Process:             -
Path:                /var/mobile/Applications/B2EFB5F3-86C0-4E87-850D-27F771A1FA41/App.app/App
Identifier:          -
Version:             1.0 (1.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2014-09-08 21:10:03.911 -0400
OS Version:          iOS 7.1.2 (11D257)
Report Version:      104

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x000000008945bec8
Triggered by Thread:  0

Thread 0 Crashed:
0   libobjc.A.dylib                 0x00000001991ac0b8 objc_retain + 24
1   App                             0x000000010008118c -[LoginViewController loginClick:] (LoginViewController.m:246)
...

在 LoginViewController 的第 246 行，我运行了以下方法:

        [self authenticateUser];

定义如下:

-(IBAction)authenticateUser {
    [keychainItem resetKeychainItem]; // remove any existing auth_token

   [keychainItem setObject:[_txtUsername text] forKey:(__bridge id)(kSecAttrAccount)];

    NSURL *url=[NSURL URLWithString:sessionsBaseURL];
    NSError *error = [[NSError alloc] init];
    NSDictionary * userDict = [[NSDictionary alloc] initWithObjectsAndKeys: [_txtUsername text], @"username", [_txtPassword text], @"password", nil];
    NSDictionary * holderDict = [[NSDictionary alloc] initWithObjectsAndKeys: userDict, @"user", nil];
    NSLog(@"user holderDict: %@", holderDict);
    NSData * holder = [NSJSONSerialization dataWithJSONObject:holderDict options:0 error:&error];

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:url];
    [request setHTTPMethod:@"POST"];
    [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody:holder];

    NSURLResponse * response = nil;
    NSData * receivedData = nil;

    receivedData = [NSMutableData data];
    receivedData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

    // get dictionary from json data
    NSDictionary * jsonResponse = [NSJSONSerialization
                                   JSONObjectWithData: receivedData
                                   options:kNilOptions
                                   error:&error];

    NSLog(@"jsonResponse: %@", jsonResponse);
    NSDictionary * dataResponse = [jsonResponse objectForKey:@"data"];
    auth_token = [dataResponse objectForKey:@"auth_token"];

    // save user authentication token in NSUserDefaults
    NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];    
    [keychainItem setObject:[dataResponse objectForKey:@"auth_token"] forKey:(__bridge id)(kSecValueData)];

    [self checkLoginApproved];
}

我非常感谢任何对此的帮助，因为它阻止我发布我的应用程序!

Answer 1

您是否使用 accessGroup:nil 创建您的 KeychainItemWrapper？尝试使用字符串 - 它对我有帮助

[[KeychainItemWrapper alloc] initWithIdentifier:@"userCredentials" accessGroup:@"reverse.tld.example"];