Catamaran

An easy way to get Social Networks authenticating by OAuth 2.0 on Objective-C via UIWebView

Supported Social Newtworks

How to use Catamaran ?

Via Supported Social Networks

Step 1

Create NSObject class import "OAuthConfigurator.h" and implement OAuthConfigurator protocol:

@implementation Configurator

#pragma mark OAuthConfigurator methods

- (NSURL *)redirectURI
{
    return [NSURL URLWithString:@"http://localhost"];
}

- (NSString *)facebookApplicationID
{
    return @"APPLICATION_ID";
}

- (NSString *)facebookScope
{
    return @"SCOPE";
}

...

Step 2

Create OAuthController and set to constructor Social OAuth object from SocialOAuthFactory:

- (void)presentOAuthWithOAuthType:(OAuthType)type
{
    SocialOAuthFactory *socialOAuthFactory = [[SocialOAuthFactory alloc] initWithConfigurator:[Configurator new]];
    OAuthController *oauthController = [[OAuthController alloc] initWithSocialOAuth:[socialOAuthFactory OAuthByType:type]];

    oauthController.completionBlock = ^(NSDictionary *response, NSString *errorString, __weak UIViewController *weakOAuthController)
    {
        if(!errorString)
        {
            // create OAuthCredential from response and save to Keychain or something else
        }
        else
        {
            [[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Authorization Error", nil) message:errorString delegate:nil cancelButtonTitle:NSLocalizedString(@"OK", nil) otherButtonTitles:nil] show];
        }

        [weakOAuthController.navigationController dismissViewControllerAnimated:YES completion:nil];
    };
    oauthController.onCancelButtonTap = ^(__weak UIViewController *weakOAuthController)
    {
        [weakOAuthController.navigationController dismissViewControllerAnimated:YES completion:nil];
    };

    [self presentViewController:[[UINavigationController alloc] initWithRootViewController:oauthController] animated:YES completion:nil];
}

Step 3

Create OAuthCredential from completion block response via OAuthManager:

OAuthCredential *credential = [[OAuthManager manager] credentialByResponse:response];

OAuthCredential supporting NSCoding protocol, you can save OAuthCredential object to Keychain, NSUserDefault and etc.

Via custom Social Networks

Step 1

Create Social Network class subclass of SocialOAuth and override constructor:

@implementation YandexOAuth

#pragma mark Interface methods

+ (instancetype)OAuth
{
    return [[YandexOAuth alloc] initWithBaseURL:@"https://oauth.yandex.ru/" authPath:@"authorize" clientID:@"CLIEND_ID" clientSecret:@"CLIENT_SECRET" responseType:@"token" redirectURI:[NSURL URLWithString:@"http://localhost"] scope:@"SCOPE"];
}

Also you can create class subclass of OAuthAppearance:

@implementation YanexAppearance

#pragma mark NSObject methods

- (instancetype)init
{
    self = [super init];
    if(self)
    {
        self.title = NSLocalizedString(@"Яндекс", nil);

        NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:self.title];

        [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 1)];
        [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20.0f] range:NSMakeRange(0, self.title.length)];

        self.attributedString = attributedString;
        self.tintColor = [UIColor blackColor];
        self.mainColor = [UIColor colorWithRed:1.00 green:1.00 blue:1.00 alpha:1.00];
        self.backgroundColor = [UIColor colorWithRed:0.96 green:0.96 blue:0.95 alpha:1.00];

        self.statusBarStyle = UIStatusBarStyleDefault;
    }
    return self;
}

And set to Social OAuth (override main constructor):

- (instancetype)initWithBaseURL:(NSString *)baseURL authPath:(NSString *)authPath clientID:(NSString *)clientID clientSecret:(NSString *)clientSecret responseType:(NSString *)responseType redirectURI:(NSURL *)redirectURI scope:(NSString *)scope
{
    self = [super initWithBaseURL:baseURL authPath:authPath clientID:clientID clientSecret:clientSecret responseType:responseType redirectURI:redirectURI scope:scope];
    if(self)
    {
        self.appearance = [YanexAppearance appearance];
    }
    return self;
}

Step 2

Create YanexAppearance and set to OAuthController:

OAuthController *oauthController = [[OAuthController alloc] initWithSocialOAuth:[YanexAppearance OAuth]];

oauthController.onCancelButtonTap = ^(__weak UIViewController *weakOAuthController)
{
	// dismiss
};
    oauthController.completionBlock = ^(CATOAuthCredential *credential, NSString *errorString, __weak UIViewController *weakOAuthController)
{
	// dismiss and process credential (save to user defaults or something else)
};
[self presentViewController:[[UINavigationController alloc] initWithRootViewController:oauthController] animated:YES completion:nil];

Demo

TO DO:

• Support SFSafariViewController. But some social networks don't support callback like myapp://callback;
• Support OAuth 1.0 for Twitter and etc;
• Tests, correct serialize response data;
• Support TV_OS;
• Renew Access token;
• More social networks : ) ;
• Any ideas ?

Contacts

• Website: Orangesoft
• Email: hello@orangesoft.co