Add support of idp_identifier field for /oauth/authorization endpoint

Author: rlatapy-luna

aws-android-sdk-cognitoauth/src/main/java/com/amazonaws/mobileconnectors/cognitoauth/Auth.java

@@ -54,6 +54,11 @@ public final class Auth {
      */
     private final String identityProvider;
 
+    /**
+     * Idp indentifier for provider mapping
+     */
+    private final String idpIdentifier;
+
     /**
      * This identifies the settings for additional userPool features.
      */
@@ -137,7 +142,8 @@ private Auth(final Context context,
                  final Set<String> scopes,
                  final AuthHandler userHandler,
                  final boolean advancedSecurityDataCollectionFlag,
-                 final String identityProvider) {
+                 final String identityProvider,
+                 final String idpIdentifier) {
         this.context = context;
         this.appWebDomain = appWebDomain;
         this.appId = appId;
@@ -151,6 +157,7 @@ private Auth(final Context context,
         this.userPoolId = userPoolId;
         this.advancedSecurityDataCollectionFlag = advancedSecurityDataCollectionFlag;
         this.identityProvider = identityProvider;
+        this.idpIdentifier = idpIdentifier;
         getCurrentUser();
     }
 
@@ -210,6 +217,11 @@ public static final class Builder {
          */
         private String mIdentityProvider;
 
+        /**
+         * Idp identifier for the userPool.
+         */
+        private String mIdpIdentifier;
+
         /**
          * Flag indicating if data collection for advanced security mode is enabled.
          * By default this is enabled.
@@ -373,6 +385,20 @@ public Builder setIdentityProvider(final String mIdentityProvider) {
             return this;
         }
 
+        /**
+         * Sets the idp identifier. This will change the hosted UI behavior to go directly to the corresponding provider
+         * <p>
+         *     Optional. Set idp identifier for provider mapping.
+         * </p>
+         * @param mIdpIdentifier Required: Scopes as a {@link Set<String>}.
+         * @return A reference to this builder.
+         */
+        @SuppressWarnings("checkstyle:hiddenfield")
+        public Builder setIdpIdentifier(final String mIdpIdentifier) {
+            this.mIdpIdentifier = mIdpIdentifier;
+            return this;
+        }
+
         /**
          * Instantiates {@link Auth} with the set options.
          * @return {@link Auth}.
@@ -389,7 +415,8 @@ public Auth build() {
                     this.mScopes,
                     this.mUserHandler,
                     this.mAdvancedSecurityDataCollectionFlag,
-                    this.mIdentityProvider);
+                    this.mIdentityProvider,
+                    this.mIdpIdentifier);
         }
 
 
@@ -524,6 +551,13 @@ public String getIdentityProvider() {
         return identityProvider;
     }
 
+    /**
+     * @return Identity Provider set for this {@link Auth} instance.
+     */
+    public String getIdpIdentifier() {
+        return idpIdentifier;
+    }
+
     /**
      * Use this method to get tokens for a user, the tokens are returned though the callback.
      * {@link AuthHandler#onSuccess(AuthUserSession)}.

aws-android-sdk-cognitoauth/src/main/java/com/amazonaws/mobileconnectors/cognitoauth/AuthClient.java

@@ -483,6 +483,10 @@ private void launchCognitoAuth(final String redirectUri, final Set<String> token
         if (!TextUtils.isEmpty(pool.getIdentityProvider())) {
             builder.appendQueryParameter(ClientConstants.DOMAIN_QUERY_PARAM_IDENTITY_PROVIDER, pool.getIdentityProvider());
         }
+        //check if idp identifier set as param.
+        if (!TextUtils.isEmpty(pool.getIdpIdentifier())) {
+            builder.appendQueryParameter(ClientConstants.DOMAIN_QUERY_PARAM_IDP_IDENTIFIER, pool.getIdpIdentifier());
+        }
 
         // Convert scopes into a string of comma separated values.
         final int noOfScopes = tokenScopes.size();

aws-android-sdk-cognitoauth/src/main/java/com/amazonaws/mobileconnectors/cognitoauth/util/ClientConstants.java

@@ -46,6 +46,7 @@ public abstract class ClientConstants {
     public static final String DOMAIN_QUERY_PARAM_STATE = "state";
     public static final String DOMAIN_QUERY_PARAM_USERCONTEXTDATA = "userContextData";
     public static final String DOMAIN_QUERY_PARAM_IDENTITY_PROVIDER = "identity_provider";
+    public static final String DOMAIN_QUERY_PARAM_IDP_IDENTIFIER = "idp_identifier";
     public static final String DOMAIN_SCHEME = "https";
     public static final String SESSION_TYPE_JWT = "JWT";
     public static final String TOKEN_AUTH_TYPE_CODE = "code";