Modify password and client_credentials grant handling

components/apimgt-extensions/org.wso2.carbon.apimgt.keymgt.extension/src/main/java/org/wso2/carbon/apimgt/keymgt/extension/TokenRequest.java

@@ -26,9 +26,11 @@ public class TokenRequest {
     private String grantType;
     private String assertion;
     private String admin_access_token;
+    private String username;
+    private String password;
 
     public TokenRequest(String clientId, String clientSecret, String refreshToken, String scope, String grantType,
-                        String assertion, String admin_access_token) {
+                        String assertion, String admin_access_token, String username, String password) {
         this.clientId = clientId;
         this.clientSecret = clientSecret;
         this.refreshToken = refreshToken;
@@ -36,6 +38,8 @@ public class TokenRequest {
         this.grantType = grantType;
         this.assertion = assertion;
         this.admin_access_token = admin_access_token;
+        this.username = username;
+        this.password = password;
     }
 
     public String getClientId() {
@@ -93,4 +97,20 @@ public class TokenRequest {
     public void setAdminAccessToken(String admin_access_token) {
         this.admin_access_token = admin_access_token;
     }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
 }

components/apimgt-extensions/org.wso2.carbon.apimgt.keymgt.extension/src/main/java/org/wso2/carbon/apimgt/keymgt/extension/TokenResponse.java

@@ -33,6 +33,13 @@ public class TokenResponse {
         this.expires_in = expires_in;
     }
 
+    public TokenResponse(String access_token, String scope, String token_type, int expires_in) {
+        this.access_token = access_token;
+        this.scope = scope;
+        this.token_type = token_type;
+        this.expires_in = expires_in;
+    }
+
     public String getAccessToken() {
         return access_token;
     }

components/apimgt-extensions/org.wso2.carbon.apimgt.keymgt.extension/src/main/java/org/wso2/carbon/apimgt/keymgt/extension/service/KeyMgtServiceImpl.java

@@ -160,37 +160,40 @@ public class KeyMgtServiceImpl implements KeyMgtService {
 
             String tenantDomain = MultitenantUtils.getTenantDomain(application.getOwner());
 
-            String username, password;
-            if (KeyMgtConstants.SUPER_TENANT.equals(tenantDomain)) {
-                kmConfig = getKeyManagerConfig();
-                username = kmConfig.getAdminUsername();
-                password = kmConfig.getAdminUsername();
-            } else {
-                try {
-                    username = getRealmService()
-                            .getTenantUserRealm(-1234).getRealmConfiguration()
-                            .getRealmProperty("reserved_tenant_user_username") + "@" + tenantDomain;
-                    password = getRealmService()
-                            .getTenantUserRealm(-1234).getRealmConfiguration()
-                            .getRealmProperty("reserved_tenant_user_password");
-                } catch (UserStoreException e) {
-                    msg = "Error while loading user realm configuration";
-                    log.error(msg);
-                    throw new KeyMgtException(msg);
-                }
-            }
+//            String username, password;
+//            if (KeyMgtConstants.SUPER_TENANT.equals(tenantDomain)) {
+//                kmConfig = getKeyManagerConfig();
+//                username = kmConfig.getAdminUsername();
+//                password = kmConfig.getAdminPassword();
+//            } else {
+//                try {
+//                    username = getRealmService()
+//                            .getTenantUserRealm(-1234).getRealmConfiguration()
+//                            .getRealmProperty("reserved_tenant_user_username") + "@" + tenantDomain;
+//                    password = getRealmService()
+//                            .getTenantUserRealm(-1234).getRealmConfiguration()
+//                            .getRealmProperty("reserved_tenant_user_password");
+//                } catch (UserStoreException e) {
+//                    msg = "Error while loading user realm configuration";
+//                    log.error(msg);
+//                    throw new KeyMgtException(msg);
+//                }
+//            }
 
             RequestBody appTokenPayload;
             switch (tokenRequest.getGrantType()) {
                 case "client_credentials":
+                    appTokenPayload = new FormBody.Builder()
+                            .add("grant_type", "client_credentials")
+                            .add("scope", tokenRequest.getScope()).build();
+                    break;
                 case "password":
                     appTokenPayload = new FormBody.Builder()
                             .add("grant_type", "password")
-                            .add("username", username)
-                            .add("password", password)
+                            .add("username", tokenRequest.getUsername())
+                            .add("password", tokenRequest.getPassword())
                             .add("scope", tokenRequest.getScope()).build();
                     break;
-
                 case "refresh_token":
                     appTokenPayload = new FormBody.Builder()
                             .add("grant_type", "refresh_token")
@@ -239,12 +242,19 @@ public class KeyMgtServiceImpl implements KeyMgtService {
                         .getTenantManager().getTenantId(tenantDomain);
                 accessToken = tenantId + "_" + responseObj.getString("access_token");
             }
+
+            if (tokenRequest.getGrantType().equals("client_credentials")) {
+                return new TokenResponse(accessToken,
+                        responseObj.getString("scope"),
+                        responseObj.getString("token_type"),
+                        responseObj.getInt("expires_in"));
+            } else {
                 return new TokenResponse(accessToken,
                         responseObj.getString("refresh_token"),
                         responseObj.getString("scope"),
                         responseObj.getString("token_type"),
                         responseObj.getInt("expires_in"));
-
+            }
         } catch (APIManagementException e) {
             msg = "Error occurred while retrieving application";
             log.error(msg);