AWSWebIdentityCredentialsProvider 如何获取参数值？答案

【问题标题】：AWSWebIdentityCredentialsProvider How to get parameters values?AWSWebIdentityCredentialsProvider 如何获取参数值？
【发布时间】：2014-10-01 10:51:55
【问题描述】：

我正在尝试使用以下代码进行身份验证，

但我无法获取需要传递给以下参数的值， providerId、roleArn、roleSessionName。

但是，webIdentityToken 值我将从我们的本地服务器接收。

AWSWebIdentityCredentialsProvider *provideer = [AWSWebIdentityCredentialsProvider credentialsWithRegionType:AWSRegionUSEast1 providerId:@"" roleArn:@"" roleSessionName:"" webIdentityToken:@""];

问候，呸

【问题讨论】：

您好，您可能需要考虑使用Amazon Cognito。它通过 STS 提供与 Web 联合身份验证相同的提供商支持。

标签： ios authentication amazon-web-services

【解决方案1】：

Class.h 
-------

@interface AWSCustomCredentialProvider : NSObject <AWSCredentialsProvider>

@property (nonatomic, readonly) NSString *accessKey;

@property (nonatomic, readonly) NSString *secretKey;

@property (nonatomic, readonly) NSString *sessionKey;

+ (instancetype)credentialsWithAccessKey:(NSString *)accessKey
                               secretKey:(NSString *)secretKey sessionKey:
(NSString*)sessionKey;

+ (instancetype)credentialsWithCredentialsFilename:(NSString *)credentialsFilename;

- (instancetype)initWithAccessKey:(NSString *)accessKey
                        secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey;


@end

Class.m 
-------
+ (instancetype)credentialsWithAccessKey:(NSString *)accessKey
                               secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey
{
    AWSCustomCredentialProvider *credentials = [[AWSCustomCredentialProvider alloc] initWithAccessKey:accessKey
                                                                                              secretKey:secretKey sessionKey:sessionKey];
    return credentials;
}
+ (instancetype)credentialsWithCredentialsFilename:(NSString *)credentialsFilename
{
    NSString *filePath = [[NSBundle bundleForClass:[self class]] pathForResource:credentialsFilename ofType:@"json"];
    NSDictionary *credentialsJson = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:filePath]
                                                                    options:NSJSONReadingMutableContainers
                                                                      error:nil];
    AWSCustomCredentialProvider *credentials = [[AWSCustomCredentialProvider alloc] initWithAccessKey:credentialsJson[@"accessKey"]
                                                                                              secretKey:credentialsJson[@"secretKey"] sessionKey:credentialsJson[@"sessionKey"]];
    return credentials;
}
- (instancetype)initWithAccessKey:(NSString *)accessKey
                        secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey
{
    if (self = [super init]) {
        _accessKey = accessKey;
        _secretKey = secretKey;
        _sessionKey = sessionKey;
    }
    return self;
}
Usage is: 
-----
 AWSCustomCredentialProvider *credentialsProvider = [AWSCustomCredentialProvider credentialsWithAccessKey:[[NSUserDefaults standardUserDefaults] objectForKey:AccessKey_Element] secretKey:[[NSUserDefaults standardUserDefaults] objectForKey:SecretKey_Element] sessionKey:[[NSUserDefaults standardUserDefaults] objectForKey:Token_Element]];

【讨论】：

【解决方案2】：

我创建了自定义凭据提供程序，亚马逊身份验证机制完美运行 :)。我已遵循与静态凭据提供程序相同的步骤。

【讨论】：

你能给我你的代码示例吗？我正在尝试做同样的事情。我的老板坚持根本不使用 cognito，所以我需要这样做。
@tyegah123 我已经添加了答案