jace jace - 2 months ago 10
Objective-C Question

Basic auth header from username and password is not working In AFNetworking 2.0

I am invoking A API its required Authorisation header.

this is API need on given URL

username : testingyouonit@gmail.com

password : testingyouonit2

to create the Authorisation header

step 1 - do a base64 encoding of the given password.

step 2 - do a SHA256 hash on the password obtained in step 1

step 3 - use the password obtained in step 2 and given username to create the authorization header

Now i am passing request using AFNetworking

NSString *email=@"testingyouonit@gmail.com";
NSString *password=[self encodeStringTo64:@"testingyouonit2"];


Here i encoded my password

- (NSString*)encodeStringTo64:(NSString*)fromString
{
NSData *plainData = [fromString dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64String;
if ([plainData respondsToSelector:@selector(base64EncodedStringWithOptions:)]) {
base64String = [plainData base64EncodedStringWithOptions:kNilOptions];
} else {
base64String = [plainData base64Encoding];
}

return base64String;
}


Now i am passing GET Request

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFJSONResponseSerializer serializer];

[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
[manager.requestSerializer setAuthorizationHeaderFieldWithUsername:email password:password];
[manager.requestSerializer setValue:@"CAS256" forHTTPHeaderField:@"Authorization"];


[manager GET:@"https://myurlhere/youit" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];


Now each time i am getting this

Error: Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: bad request (400)" UserInfo=0x7c361610 {com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x7aed9220> { URL: https://myurlhere/youit } { status code: 400, headers {
"Access-Control-Allow-Origin" = "*";
Connection = "keep-alive";
"Content-Length" = 114;
"Content-Type" = "application/json";
Date = "Sat, 11 Jul 2015 02:56:46 GMT";
Server = "nginx/1.1.19";
} }, NSErrorFailingURLKey=https://myurlhere/youit, NSLocalizedDescription=Request failed: bad request (400), com.alamofire.serialization.response.error.data=<7b0a2020 22657272 6f725f63 6f646522 3a202269 6e76616c 69645f61 7574685f 68656164 6572222c 0a202022 6d657373 61676522 3a202249 6e76616c 69642061 7574686f 72697a61 74696f6e 2e205573 6520616e 20617574 68206865 61646572 206f7220 61636365 73732068 61736822 0a7d>}


where is the mistake i am doing to make basic Auth

Answer

Lets create SHA256 and pass it password and try it

NSString *email=@"testingyouonit@gmail.com";
NSString *password=[self encodeStringTo64:@"testingyouonit2"];

add one more method to generate a Sha256 password and pass in to request

Step-1 using this method you need to #include <CommonCrypto/CommonDigest.h>

-(NSString*)sha256HashFor:(NSString*)input
{
    const char* str = [input UTF8String];
    unsigned char result[CC_SHA256_DIGEST_LENGTH];
    CC_SHA256(str, strlen(str), result);

    NSMutableString *ret = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH*2];
    for(int i = 0; i<CC_SHA256_DIGEST_LENGTH; i++)
    {
        [ret appendFormat:@"%02x",result[i]];
    }
    return ret;
}

and call this
Note : pass here encoded password you used

NSString *password=[self encodeStringTo64:@"testingyouonit2"];
 `password=[self sha256HashFor: password];`

and final step

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];

    [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
    [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    manager.requestSerializer = [AFJSONRequestSerializer serializer];
    manager.requestSerializer = [AFHTTPRequestSerializer serializer];
    [manager.requestSerializer setAuthorizationHeaderFieldWithUsername:email password:password];



    [manager GET:@"https://myurlhere/youit" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

let me see the result