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- // Facebook Token to exchange app information.
- // Can use the token to authenticate an application for a web service.
- //
- // Created by Danilo Priore on 27/11/12.
- + (NSString*)getAppAccessTokenWithAppId:(NSString*)appId cosumerSecret:(NSString*)secret
- {
- // get application access token
- NSString *link = [NSString stringWithFormat:@"https://graph.facebook.com/oauth/access_token?client_id=%@&client_secret=%@&grant_type=client_credentials", appId, secret];
- NSURL *url = [NSURL URLWithString:link];
- NSString *token = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
- NSArray *params = [token componentsSeparatedByString:@"="];
- if (![[params objectAtIndex:0] isEqualToString:@"access_token"]) {
- // ERROR
- return nil;
- }
- return [params objectAtIndex:1];
- }
- + (NSDictionary*)getAppInfoFromToken:(NSString*)token
- {
- // get application info
- NSString *link = [NSString stringWithFormat:@"https://graph.facebook.com/app?access_token=%@", [token stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
- NSURL *url = [NSURL URLWithString:link];
- NSData *data = [NSData dataWithContentsOfURL:url options:NSDataReadingUncached error:nil];
- NSDictionary *json = (NSDictionary*)[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
- return json;
- }
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