Support the deprecated Azure DevOps oauth apps

wsmaster/che-core-api-auth-azure-devops/src/main/java/org/eclipse/che/security/oauth/AzureDevOpsOAuthAuthenticator.java

@@ -34,6 +34,7 @@
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.util.Collections;
 import java.util.List;
 import javax.inject.Singleton;
 import org.eclipse.che.api.auth.shared.dto.OAuthToken;
@@ -55,6 +56,7 @@ public class AzureDevOpsOAuthAuthenticator extends OAuthAuthenticator {
   private final String PROVIDER_NAME = "azure-devops";
   private final String clientId;
   private final String clientSecret;
+  private final boolean isDevOpsOauth;
 
   private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
 
@@ -66,7 +68,8 @@ public AzureDevOpsOAuthAuthenticator(
       String azureDevOpsScmApiEndpoint,
       String authUri,
       String tokenUri,
-      String[] redirectUris)
+      String[] redirectUris,
+      boolean isDevOpsOauth)
       throws IOException {
     this.cheApiEndpoint = cheApiEndpoint;
     this.clientId = clientId;
@@ -78,6 +81,7 @@ public AzureDevOpsOAuthAuthenticator(
             trimEnd(azureDevOpsApiEndpoint, '/'), API_VERSION);
     this.tokenUri = tokenUri;
     this.redirectUris = redirectUris;
+    this.isDevOpsOauth = isDevOpsOauth;
     configure(
         clientId, clientSecret, redirectUris, authUri, tokenUri, new MemoryDataStoreFactory());
   }
@@ -90,8 +94,15 @@ public AzureDevOpsOAuthAuthenticator(
    */
   @Override
   public String getAuthenticateUrl(URL requestUrl, List<String> scopes) {
+    if (isDevOpsOauth) {
+      scopes = Collections.singletonList("vso.code_write");
+    }
     AuthorizationCodeRequestUrl url = flow.newAuthorizationUrl().setScopes(scopes);
-    url.set("response_type", "code");
+    if (isDevOpsOauth) {
+      url.set("response_type", "Assertion");
+    } else {
+      url.set("response_type", "code");
+    }
     url.set("redirect_uri", format("%s/oauth/callback", cheApiEndpoint));
     url.setState(prepareState(requestUrl));
     return url.build();
@@ -204,10 +215,19 @@ protected AuthorizationCodeTokenRequest getAuthorizationCodeTokenRequest(
       URL requestUrl, List<String> scopes, String code) {
     AuthorizationCodeTokenRequest request =
         super.getAuthorizationCodeTokenRequest(requestUrl, scopes, code);
-    request.set("client_id", clientId);
-    request.set("grant_type", "authorization_code");
-    request.set("client_secret", URLEncoder.encode(clientSecret));
-    request.setResponseClass(TokenResponse.class);
+    if (isDevOpsOauth) {
+      request.set("grant_type", "urn:ietf:params:oauth:grant-type:jwt-bearer");
+      request.set("assertion", code);
+      request.set("client_assertion", clientSecret);
+      request.set(
+          "client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer");
+      request.setResponseClass(AzureDevOpsTokenResponse.class);
+    } else {
+      request.set("client_id", clientId);
+      request.set("grant_type", "authorization_code");
+      request.set("client_secret", URLEncoder.encode(clientSecret));
+      request.setResponseClass(TokenResponse.class);
+    }
     return request;
   }
 }

wsmaster/che-core-api-auth-azure-devops/src/main/java/org/eclipse/che/security/oauth/AzureDevOpsOAuthAuthenticatorProvider.java

@@ -82,19 +82,34 @@ private OAuthAuthenticator getOAuthAuthenticator(
     if (!isNullOrEmpty(clientIdPath)
         && !isNullOrEmpty(clientSecretPath)
         && !isNullOrEmpty(tenantIdPath)) {
-      final String tenantId = Files.readString(Path.of(tenantIdPath)).trim();
+      // This flag is needed to support the deprecated Azure DevOps oauth apps.
+      // TODO remove the related logic when the deprecated Azure DevOps oauth app is no longer
+      // available, see
+      // https://learn.microsoft.com/en-us/azure/devops/integrate/get-started/authentication/oauth?view=azure-devops#azure-devops-oauth-deprecated
+      boolean isDevOpsOauth = false;
+      String tenantId = null;
+      try {
+        tenantId = Files.readString(Path.of(tenantIdPath)).trim();
+      } catch (IOException e) {
+        isDevOpsOauth = true;
+      }
       final String clientId = Files.readString(Path.of(clientIdPath)).trim();
       final String clientSecret = Files.readString(Path.of(clientSecretPath)).trim();
-      if (!isNullOrEmpty(clientId) && !isNullOrEmpty(clientSecret) && !isNullOrEmpty(tenantId)) {
+      if (!isNullOrEmpty(clientId) && !isNullOrEmpty(clientSecret)) {
         return new AzureDevOpsOAuthAuthenticator(
             cheApiEndpoint,
             clientId,
             clientSecret,
             azureDevOpsApiEndpoint,
             azureDevOpsScmApiEndpoint,
-            String.format(authUriTemplate, tenantId),
-            String.format(tokenUriTemplate, tenantId),
-            redirectUris);
+            isDevOpsOauth
+                ? "https://app.vssps.visualstudio.com/oauth2/authorize"
+                : String.format(authUriTemplate, tenantId),
+            isDevOpsOauth
+                ? "https://app.vssps.visualstudio.com/oauth2/authorize"
+                : String.format(tokenUriTemplate, tenantId),
+            redirectUris,
+            isDevOpsOauth);
       }
     }
     return new NoopOAuthAuthenticator();

wsmaster/che-core-api-auth-azure-devops/src/main/java/org/eclipse/che/security/oauth/AzureDevOpsTokenResponse.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2012-2026 Red Hat, Inc.
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.security.oauth;
+
+import com.google.api.client.auth.oauth2.TokenResponse;
+import com.google.api.client.json.JsonString;
+import com.google.api.client.util.Key;
+
+/**
+ * The only difference between from {@link TokenResponse} is that {@link #expiresInSeconds} field is
+ * represented in a {@link String} format.
+ *
+ * <p>https://learn.microsoft.com/en-us/azure/devops/integrate/get-started/authentication/oauth?view=azure-devops#response---authorize-app
+ *
+ * @author Anatolii Bazko
+ */
+public class AzureDevOpsTokenResponse extends TokenResponse {
+  @JsonString
+  @Key("expires_in")
+  private Long expiresInSeconds;
+
+  public Long getExpiresInSeconds() {
+    return expiresInSeconds;
+  }
+
+  public AzureDevOpsTokenResponse setExpiresInSeconds(Long expiresInSeconds) {
+    this.expiresInSeconds = expiresInSeconds;
+    return this;
+  }
+}