Adding the ability to configure the token request HTTP Method, e.g. for LinkedIn who wants all request params in the query string (and accepts GET requests).

Author: airdrummingfool

Sources/OAuth2Client/NXOAuth2AccountStore.h

@@ -34,6 +34,7 @@ extern NSString * const kNXOAuth2AccountStoreConfigurationTokenURL;
 extern NSString * const kNXOAuth2AccountStoreConfigurationRedirectURL;
 extern NSString * const kNXOAuth2AccountStoreConfigurationScope;
 extern NSString * const kNXOAuth2AccountStoreConfigurationTokenType;
+extern NSString * const kNXOAuth2AccountStoreConfigurationTokenRequestHTTPMethod;
 
 
 /* 

Sources/OAuth2Client/NXOAuth2AccountStore.m

@@ -42,6 +42,7 @@
 NSString * const kNXOAuth2AccountStoreConfigurationRedirectURL = @"kNXOAuth2AccountStoreConfigurationRedirectURL";
 NSString * const kNXOAuth2AccountStoreConfigurationScope = @"kNXOAuth2AccountStoreConfigurationScope";
 NSString * const kNXOAuth2AccountStoreConfigurationTokenType = @"kNXOAuth2AccountStoreConfigurationTokenType";
+NSString * const kNXOAuth2AccountStoreConfigurationTokenRequestHTTPMethod = @"kNXOAuth2AccountStoreConfigurationTokenRequestHTTPMethod";
 NSString * const kNXOAuth2AccountStoreConfigurationAdditionalAuthenticationParameters = @"kNXOAuth2AccountStoreConfigurationAdditionalAuthenticationParameters";
 
 #pragma mark Account Type
@@ -395,6 +396,7 @@ - (NXOAuth2Client *)pendingOAuthClientForAccountType:(NSString *)accountType;
             NSURL *authorizeURL = [configuration objectForKey:kNXOAuth2AccountStoreConfigurationAuthorizeURL];
             NSURL *tokenURL = [configuration objectForKey:kNXOAuth2AccountStoreConfigurationTokenURL];
             NSString *tokenType = [configuration objectForKey:kNXOAuth2AccountStoreConfigurationTokenType];
+            NSString *tokenRequestHTTPMethod = [configuration objectForKey:kNXOAuth2AccountStoreConfigurationTokenRequestHTTPMethod];
             NSDictionary *additionalAuthenticationParameters = [configuration objectForKey:kNXOAuth2AccountStoreConfigurationAdditionalAuthenticationParameters];
 
             client = [[NXOAuth2Client alloc] initWithClientID:clientID
@@ -408,6 +410,9 @@ - (NXOAuth2Client *)pendingOAuthClientForAccountType:(NSString *)accountType;
 
             client.persistent = NO;
 
+            if (tokenRequestHTTPMethod != nil) {
+                client.tokenRequestHTTPMethod = tokenRequestHTTPMethod;
+            }
             if (additionalAuthenticationParameters != nil) {
                 NSAssert([additionalAuthenticationParameters isKindOfClass:[NSDictionary class]], @"additionalAuthenticationParameters have to be a NSDictionary");
                 client.additionalAuthenticationParameters = additionalAuthenticationParameters;

Sources/OAuth2Client/NXOAuth2Client.h

@@ -66,6 +66,7 @@ extern NSString * const NXOAuth2ClientConnectionContextTokenRefresh;
 @property (nonatomic, strong, readwrite) NSDictionary *additionalAuthenticationParameters;
 
 @property (nonatomic, copy) NSSet *desiredScope;
+@property (nonatomic, copy) NSString *tokenRequestHTTPMethod; // defaults to POST
 @property (nonatomic, copy) NSString *userAgent;
 @property (nonatomic, copy) NSString *acceptType; // defaults to application/json
 

Sources/OAuth2Client/NXOAuth2Client.m

@@ -91,6 +91,7 @@ - (id)initWithClientID:(NSString *)aClientId
         tokenType = [aTokenType copy];
         accessToken = anAccessToken;
 
+        self.tokenRequestHTTPMethod = @"POST";
         self.acceptType = @"application/json";
 
         self.persistent = shouldPersist;
@@ -308,7 +309,7 @@ - (void)requestTokenWithAuthGrant:(NSString *)authGrant redirectURL:(NSURL *)red
     NSAssert1(!authConnection, @"authConnection already running with: %@", authConnection);
 
     NSMutableURLRequest *tokenRequest = [NSMutableURLRequest requestWithURL:tokenURL];
-    [tokenRequest setHTTPMethod:@"POST"];
+    [tokenRequest setHTTPMethod:self.tokenRequestHTTPMethod];
     [authConnection cancel];  // just to be sure
 
     self.authenticating = YES;
@@ -341,7 +342,7 @@ - (void)authenticateWithClientCredentials;
     NSAssert1(!authConnection, @"authConnection already running with: %@", authConnection);
 
     NSMutableURLRequest *tokenRequest = [NSMutableURLRequest requestWithURL:tokenURL];
-    [tokenRequest setHTTPMethod:@"POST"];
+    [tokenRequest setHTTPMethod:self.tokenRequestHTTPMethod];
     [authConnection cancel];  // just to be sure
 
     self.authenticating = YES;
@@ -367,7 +368,7 @@ - (void)authenticateWithUsername:(NSString *)username password:(NSString *)passw
     NSAssert1(!authConnection, @"authConnection already running with: %@", authConnection);
 
     NSMutableURLRequest *tokenRequest = [NSMutableURLRequest requestWithURL:tokenURL];
-    [tokenRequest setHTTPMethod:@"POST"];
+    [tokenRequest setHTTPMethod:self.tokenRequestHTTPMethod];
     [authConnection cancel];  // just to be sure
 
     self.authenticating = YES;
@@ -402,7 +403,7 @@ - (void)authenticateWithAssertionType:(NSURL *)anAssertionType assertion:(NSStri
     NSParameterAssert(anAssertion);
 
     NSMutableURLRequest *tokenRequest = [NSMutableURLRequest requestWithURL:tokenURL];
-    [tokenRequest setHTTPMethod:@"POST"];
+    [tokenRequest setHTTPMethod:self.tokenRequestHTTPMethod];
     [authConnection cancel];  // just to be sure
 
     self.authenticating = YES;
@@ -440,7 +441,7 @@ - (void)refreshAccessTokenAndRetryConnection:(NXOAuth2Connection *)retryConnecti
     if (!authConnection) {
         NSAssert((accessToken.refreshToken != nil), @"invalid state");
         NSMutableURLRequest *tokenRequest = [NSMutableURLRequest requestWithURL:tokenURL];
-        [tokenRequest setHTTPMethod:@"POST"];
+        [tokenRequest setHTTPMethod:self.tokenRequestHTTPMethod];
         [authConnection cancel]; // not needed, but looks more clean to me :)
 
         NSMutableDictionary *parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys: