Come inviare le richieste autenticate a Google Reader?

Question

Sembra che Google ha disattivato il vecchio modo di invio dei cookie SID al loro Google Data Services, in particolare Google Reader.

In questo modo non funziona almeno per me:

//create request
NSString* content = [NSString stringWithFormat:@"accountType=HOSTED_OR_GOOGLE&Email=%@&Passwd=%@&service=ah&source=myapp", [loginView username].text, [loginView password].text];
NSURL* authUrl = [NSURL URLWithString:@"https://www.google.com/accounts/ClientLogin"];
NSMutableURLRequest* authRequest = [[NSMutableURLRequest alloc] initWithURL:authUrl];
[authRequest setHTTPMethod:@"POST"];
[authRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-type"];
[authRequest setHTTPBody:[content dataUsingEncoding:NSASCIIStringEncoding]];

NSHTTPURLResponse* authResponse;
NSError* authError;
NSData * authData = [NSURLConnection sendSynchronousRequest:authRequest returningResponse:&authResponse error:&authError];      

NSString *authResponseBody = [[NSString alloc] initWithData:authData encoding:NSASCIIStringEncoding];

//loop through response body which is key=value pairs, seperated by \n. The code below is not optimal and certainly error prone. 
NSArray *lines = [authResponseBody componentsSeparatedByString:@"\n"];
NSMutableDictionary* token = [NSMutableDictionary dictionary];
for (NSString* s in lines) {
        NSArray* kvpair = [s componentsSeparatedByString:@"="];
        if ([kvpair count]>1)
                [token setObject:[kvpair objectAtIndex:1] forKey:[kvpair objectAtIndex:0]];
}

//if google returned an error in the body [google returns Error=Bad Authentication in the body. which is weird, not sure if they use status codes]
if ([token objectForKey:@"Error"]) {
        //handle error
};

E la richiesta:

TTURLRequest *request = [TTURLRequest requestWithURL:url delegate:self];
request.cachePolicy = cachePolicy;
request.cacheExpirationAge = TT_CACHE_EXPIRATION_AGE_NEVER;

NSString *cookieHeader = [NSString stringWithFormat:@"Name=SID;SID=%@;Domain=.google.com;Path=/;Expires=160000000000", sid];
[request setValue:cookieHeader forHTTPHeaderField:@"Cookie"];

[request setHttpMethod:@"GET"];
[request setValue:@"myapp" forHTTPHeaderField:@"User-agent"];

La modifica di utilizzare la GoogleLogin auth = xxx mi dà un NSURLErrorDomain 401

TTURLRequest *request = [TTURLRequest requestWithURL:url delegate:self];
request.cachePolicy = cachePolicy;
request.cacheExpirationAge = TT_CACHE_EXPIRATION_AGE_NEVER;

NSString *authorizationHeader = [NSString stringWithFormat:@"GoogleLogin auth=%@", auth];
[request setValue:authorizationHeader forHTTPHeaderField:@"Authorization"];

[request setHttpMethod:@"GET"];
[request setValue:@"myapp" forHTTPHeaderField:@"User-agent"];

Il risultato è sempre il codice di errore 401. Qualcuno mi potrebbe mostrare come correzione in questo caso specifico? Grazie in anticipo.

    Error Domain=NSURLErrorDomain Code=401 "Operation could not be completed. (NSURLErrorDomain error 401.)" 
    Error description: Operation could not be completed. (NSURLErrorDomain error 401.)

Answer 1

Cambiando il corpo del POST risolve l'errore 401. Le differenze sono nel service, source & continue.

    NSString* content = [NSString stringWithFormat:@"Email=%@&Passwd=%@&service=reader&source=yourapp&continue=http://www.google.com", username, password];