Google App Engine与Objective-C的ClientLogin接口 [英] Google App Engine with ClientLogin Interface for Objective-C

问题描述

我遇到了这个以前的stackoverflow.com的帖子。

具体来说，我似乎能够正确获取Auth令牌，但是当我访问以后的页面时，尝试在头部使用它时，

Specifically, I seem to be able to get the "Auth" token correctly, but attempts to use it in the header when I access later pages still just return me the login page's HTML.

以下与此信息相关的链接已确定您需要随后调用此网址。

Following links related to this post, I've determined that you need to make a subsequent call to this URL.

然后调用URL会为您提供ACSID Cookie需要在后续调用中传递以便维持已验证状态。

A call to the URL will then give you an ACSID cookie which then needs to be passed in subsequent calls in order to maintain an authenticated state.

在请求此Cookie时，我阅读过各种帖子，表示您需要通过将其附加到查询字符串来指定原始授权令牌，以便：

When requesting this cookie, I've read various posts saying you need to specify your original auth token by appending it to the query string such that:

?auth=this_is_my_token

我还读过，您应该将其设置在http头中，如 google的文档，以使http头名称/值为：

I've also read that you should set it in the http header as described in google's documentation such that a http header name/value is:

Authorization: GoogleLogin auth=yourAuthToken

我尝试过两种方法，但没有看到任何返回的Cookie。我使用Wireshark，Firefox的LiveHttpHeaders和简单的NSLog语句试图查看是否返回这样的东西。

I've tried both approaches and am not seeing any cookies returned. I've used Wireshark, LiveHttpHeaders for Firefox, and simple NSLog statements trying to see if anything like this is returned.

以下是我一直在使用的代码段。

Below is the code snippet I've been using.

NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://yourapp.appspot.com/_ah/login?auth=%@", [token objectForKey:@"Auth"]]];
NSHTTPURLResponse* response;
NSError* error;
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setValue:[NSString stringWithFormat:@"GoogleLogin auth=%@", [token objectForKey:@"Auth"]] forHTTPHeaderField:@"Authorization"];
NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];  

//show me all header fields
NSLog([[response allHeaderFields] description]);

//show me the response
NSLog(@"%@", [[[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding] autorelease]);
NSArray * all = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:@"http://yourapp.appspot.com/_ah/login"]];

//show me all cookies
for (NSHTTPCookie *cookie in all) 
{
    NSLog(@"Name: %@ : Value: %@", cookie.name, cookie.value); 
}

我希望您可以使用 ClientLogin 代表Google App Engine代码。

I hope you can use ClientLogin for Google App Engine code.

推荐答案

向这个问题添加示例代码，因为有人直接与我联系我的解决方案。请注意，您必须在初始令牌请求上将service参数设置为等于ah。

Adding sample code to this question because someone contacted me directly about my solution. Note that you must set the "service" parameter equal to "ah" on the initial token request.

令牌的初始请求[同步完成]注意：service参数设置为ah，source设置为myapp应该使用您的应用程序名称。

Initial Request of Token [done synchronously] NOTE: the "service" parameter is set to "ah" and the "source" is just set to "myapp", you should use your app name.

//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
};

下一步是让您的应用程序在google app引擎上运行，我不知道为什么有这个额外的步骤，它似乎是一个问题在谷歌的结束，可能为什么GAE目前不在他们列出的obj-c谷歌数据API库。我的测试显示我已按 请求cookie，以便与GAE同步。另外，注意我不对cookie做任何事情。它似乎只是通过请求和获取，未来的请求将自动包含cookie。我不知道这是一个iphone的东西bc我的应用程序是一个iphone应用程序，但我不完全明白这个cookie发生了什么。注意：使用myapp.appspot.com。

The next step is to get your app running on google app engine to give you the ASCID cookie. I'm not sure why there is this extra step, it seems to be an issue on google's end and probably why GAE is not currently in their listed obj-c google data api library. My tests show I have to request the cookie in order sync with GAE. Also, notice I don't do anything with the cookie. It seems just by requesting it and getting cookied, future requests will automatically contain the cookie. I'm not sure if this is an iphone thing bc my app is an iphone app but I don't fully understand what is happening with this cookie. NOTE: the use of "myapp.appspot.com".

NSURL* cookieUrl = [NSURL URLWithString:[NSString stringWithFormat:@"http://myapp.appspot.com/_ah/login?continue=http://myapp.appspot.com/&auth=%@", [token objectForKey:@"Auth"]]];
    NSLog([cookieUrl description]);
    NSHTTPURLResponse* cookieResponse;
    NSError* cookieError;
    NSMutableURLRequest *cookieRequest = [[NSMutableURLRequest alloc] initWithURL:cookieUrl];

    [cookieRequest setHTTPMethod:@"GET"];

    NSData* cookieData = [NSURLConnection sendSynchronousRequest:cookieRequest returningResponse:&cookieResponse error:&cookieError];   

最后，我可以将json发布到我的gae应用程序。注意：下面的代码段是一个异步请求。我们可以通过实现didReceiveResponse，didReceiveData，didFailWIthError来处理响应。

Finally, I can post json to my gae app. NOTE: the snippet below is an async request. We can handle responses by implementing didReceiveResponse, didReceiveData, didFailWIthError.

NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://myapp.appspot.com/addRun?auth=%@", mytoken]];
    NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];
    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:@"my http body";

    NSURLConnection *connectionResponse = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    if (!connectionResponse) {
        NSLog(@"Failed to submit request");
    } else {
        NSLog(@"Request submitted");
    }

这篇关于Google App Engine与Objective-C的ClientLogin接口的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！