使用 Facebook 和 Google+ 提供商身份验证的 Amazon Cognito iOS SDK V2 的问题

Issues with Amazon Cognito iOS SDK V2 using Facebook and Google+ Provider Authentication

我目前无法授权用户使用 AWS iOS SDK V2,使用 Facebook 和 Google+ 作为提供商。

我不确定这是我在 AWS 开发人员控制台上的设置,还是代码。

这是身份池的角色策略:

{  
"Version": "2012-10-17",  
"Statement": [{  
    "Action": [  
        "mobileanalytics:PutEvents",  
        "cognito-sync:*"  
    ],  
    "Effect": "Allow",  
    "Resource": ["*"]  
}]  

我确实收到了未经授权的 Cognito ID,但是当我尝试使用 Facebook 或 Google+ 提供商身份验证时,它不起作用。

Facebook 登录后returns 我可以成功使用用户属性提取个人资料图片、姓名和电子邮件地址。然后我从 Facebook 会话中获取令牌(是的,它是一个很长的字符串)并在 deviceID class:

中使用它
- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView
                        user:(id<FBGraphUser>)user {

//Populate viewcontoller with Facebook data
self.profilePictureView.profileID = user.id;
NSRange range = [user.name rangeOfString:@" "];
self.firstName.text = [user.name substringToIndex:range.location];
self.lastName.text = [user.name substringFromIndex:range.location+1];
self.emailAddress.text = [user objectForKey:@"email"];

//Get Facebook token, set then get Cognito device ID - in DeviceId class
NSString *token = FBSession.activeSession.accessTokenData.accessToken;
DeviceId *myDeviceId = [DeviceId sharedInstance];

cognitoDeviceId = [myDeviceId setFacebookToken:token];

}

DeviceID class实现如下所示:

#import "DeviceId.h"
#import <AWSiOSSDKv2/AWSCore.h>
#import <AWSCognitoSync/Cognito.h>

@implementation DeviceId

static NSString *cognitoId;
static DeviceId *_sharedInstance;
static AWSCognitoCredentialsProvider *credentialsProvider;
static AWSServiceConfiguration *configuration;

+ (DeviceId *) sharedInstance
{
    if (!_sharedInstance)
    {
        _sharedInstance = [[DeviceId alloc] init];
    }

    return _sharedInstance;
}

- (NSString *) getDeviceId
{
    return cognitoId;
}

- (void) setDeviceId
{
    /*
     * AWS Cognito
     */

        credentialsProvider = [AWSCognitoCredentialsProvider
                            credentialsWithRegionType:AWSRegionUSEast1
                            accountId:@"(accountID"
                            identityPoolId:@"(identityPool)"
                            unauthRoleArn:@"arn:aws:iam::(accountID):role/Cognito_(app)UsersUnauth_DefaultRole"
                            authRoleArn:@"arn:aws:iam::(accountID):role/Cognito_(app)UsersAuth_DefaultRole"];

        configuration = [AWSServiceConfiguration configurationWithRegion:AWSRegionUSEast1
                                                                          credentialsProvider:credentialsProvider];

        [AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

    // Retrieve the cognito ID.
    cognitoId = credentialsProvider.identityId;

    if (!cognitoId) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Identification Error"
                                                        message:@"Error on User Account."
                                                       delegate:nil
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
    }
}

-(NSString *)setFacebookToken:(NSString*)token {

    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyFacebook): token };
    [self setDeviceId];
    return cognitoId;
}

-(NSString *)setGooglePlusToken:(NSString*)token {
    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyGoogle): token };
    [self setDeviceId];
    return cognitoId;
}

@end

我没有收到任何错误消息,上面的仪表板从不显示经过身份验证的用户。 CognitoID 从不更改其值。谁能告诉我问题出在哪里?

编辑:根据评论更新DeviceId.m cognitoId returns nil

编辑 2:更新 DeviceId.m 以替换 while 循环检查 BFTask 是否已完成到 Bolts 方法 waitUntilFinished。

#import "DeviceId.h"
#import <AWSiOSSDKv2/AWSCore.h>
#import <AWSCognitoSync/Cognito.h>


@implementation DeviceId
{
    __block NSString *tempCognitoId;
}

static NSString *cognitoId;
static DeviceId *_sharedInstance;
static AWSCognitoCredentialsProvider *credentialsProvider;
static AWSServiceConfiguration *configuration;

+ (DeviceId *) sharedInstance
{
    if (!_sharedInstance)
    {
        _sharedInstance = [[DeviceId alloc] init];
    }

    return _sharedInstance;
}

- (NSString *) getDeviceId
{
    return cognitoId;
}

- (void) setDeviceId
{
    /*
     * AWS Cognito
     */

    credentialsProvider = [AWSCognitoCredentialsProvider
                                                          credentialsWithRegionType:AWSRegionUSEast1
                                                          identityPoolId:@"Identity Pool ID"];

    configuration = [AWSServiceConfiguration
                                              configurationWithRegion:AWSRegionUSEast1
                                              credentialsProvider:credentialsProvider];

    [AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

    BFTask *taskIdentity = [[credentialsProvider refresh] continueWithBlock:^id(BFTask *task){

        if (task.error == nil)
        {
            tempCognitoId = credentialsProvider.identityId;
            NSLog(@"cognitoId: %@", cognitoId);
        }
        else
        {
            NSLog(@"Error : %@", task.error);
        }

        return nil;
    }];

    [taskIdentity waitUntilFinished];

    cognitoId = tempCognitoId;

}

-(NSString *)setFacebookToken:(NSString*)token {

    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyFacebook): token };
    BFTask *taskIdentity = [[credentialsProvider refresh] continueWithBlock:^id(BFTask *task){

        if (task.error == nil)
        {
            tempCognitoId = credentialsProvider.identityId;
            NSLog(@"cognitoId: %@", tempCognitoId);
        }
        else
        {
            NSLog(@"Error : %@", task.error);
        }

        return nil;
    }];

    [taskIdentity waitUntilFinished];

    cognitoId = tempCognitoId;

    return cognitoId;
}

-(NSString *)setGooglePlusToken:(NSString*)token {
    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyGoogle): token };
    BFTask *taskIdentity = [[credentialsProvider getIdentityId] continueWithBlock:^id(BFTask *task){

        if (task.error == nil)
        {
            tempCognitoId = credentialsProvider.identityId;
            NSLog(@"cognitoId: %@", tempCognitoId);
        }
        else
        {
            NSLog(@"Error : %@", task.error);
        }

        return nil;
    }];

    [taskIdentity waitUntilFinished];

    cognitoId = tempCognitoId;

    return cognitoId;
}

@end

我确实意识到有些人可能认为等待完成是不好的做法,但我需要确保出于测试目的返回 cognitoId "synchronously"。修改Facebook App ID后,使用此方法返回cognitoID。

编辑 3:但是,Google+ 在到达 deviceId 之前失败。

- (void)finishedWithAuth:(GTMOAuth2Authentication *)auth
               error:(NSError *)error {
    if (error) {
        _signInAuthStatus.text =
        [NSString stringWithFormat:@"Status: Authentication error: %@", error];
        NSLog(@"%@", error);
        return;
    }
    NSString *idToken = [auth.parameters objectForKey:@"id_token"];
    DeviceId *myDeviceId = [DeviceId sharedInstance];
    [myDeviceId setGooglePlusToken:idToken];
}

NSLog 错误打印:Error Domain=com.google.GooglePlusPlatform Code=-1 "The operation couldn’t be completed. (com.google.HTTPStatus error 400.)" The API & Auth Product Name and Current Email Address appeared to correct on the console.

编辑 4:代码的另一部分中的 Cognito Synch 现在已停止工作,而它之前可以工作:

    AWSCognito *syncClient = [AWSCognito defaultCognito];
    AWSCognitoDataset *dataset = [syncClient openOrCreateDataset:@"myDataSet"];
    NSString *fullName = [dataset stringForKey:@"name"];

在第一行失败并出现错误:

*** 由于未捕获的异常 'NSInvalidArgumentException' 而终止应用程序,原因:'+[AWSEndpoint endpointWithRegion:service:]:无法识别的选择器已发送至 class

感谢任何有关这些额外错误的帮助。

看起来,在 credentialsProvider.logins 映射中设置令牌后,您正在通过再次调用 setDeviceId 来覆盖您的 credentialsProvider。 setDeviceId 创建一个全新的 AWSCognitoCredentialsProvider,它将没有您添加到前一个的令牌,并覆盖变量 credentialsProvider。

您在

中描述的问题的常见原因

Error Domain=com.google.GooglePlusPlatform Code=-1 "操作无法完成。(com.google.HTTPStatus 错误 400。)

this Whosebug question中有描述。我会仔细检查您是否输入了产品名称和电子邮件地址。此外,我认为您必须在输入此数据后重新创建 OAuth 凭据,因此如果您还没有这样做,可能值得一试。

最后,检查您使用的是网络服务器 API 密钥,而不是 iOS 客户端密钥。