fix(git/auth): fix insteadOf for bitbucket-server (#29951)

lib/util/git/auth.spec.ts

@@ -350,6 +350,27 @@ describe('util/git/auth', () => {
         GIT_CONFIG_VALUE_2: 'https://github.com:89/org/repo.git',
       });
     });
+
+    it('returns url with token for bitbucket-server', () => {
+      expect(
+        getGitAuthenticatedEnvironmentVariables('https://git.mycompany.com/', {
+          token: 'token1234',
+          hostType: 'bitbucket-server',
+          matchHost: 'git.mycompany.com',
+        }),
+      ).toStrictEqual({
+        GIT_CONFIG_COUNT: '3',
+        GIT_CONFIG_KEY_0:
+          'url.https://ssh:token1234@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_KEY_1:
+          'url.https://git:token1234@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_KEY_2:
+          'url.https://token1234@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_VALUE_0: 'ssh://git@git.mycompany.com:7999/',
+        GIT_CONFIG_VALUE_1: 'ssh://git@git.mycompany.com:7999/',
+        GIT_CONFIG_VALUE_2: 'https://git.mycompany.com/scm/',
+      });
+    });
   });
 
   describe('getGitEnvironmentVariables()', () => {
@@ -538,5 +559,25 @@ describe('util/git/auth', () => {
       });
       expect(getGitEnvironmentVariables(['custom'])).toStrictEqual({});
     });
+
+    it('returns environment variables for bitbucket-server', () => {
+      add({
+        hostType: 'bitbucket-server',
+        matchHost: 'git.mycompany.com',
+        token: 'token123',
+      });
+      expect(getGitEnvironmentVariables()).toStrictEqual({
+        GIT_CONFIG_COUNT: '3',
+        GIT_CONFIG_KEY_0:
+          'url.https://ssh:token123@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_KEY_1:
+          'url.https://git:token123@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_KEY_2:
+          'url.https://token123@git.mycompany.com/scm/.insteadOf',
+        GIT_CONFIG_VALUE_0: 'ssh://git@git.mycompany.com:7999/',
+        GIT_CONFIG_VALUE_1: 'ssh://git@git.mycompany.com:7999/',
+        GIT_CONFIG_VALUE_2: 'https://git.mycompany.com/scm/',
+      });
+    });
   });
 });

lib/util/git/auth.ts

@@ -71,6 +71,7 @@ export function getGitAuthenticatedEnvironmentVariables(
 
     authenticationRules = getAuthenticationRules(
       originalGitUrl,
+      hostType,
       `${encodedUsername}:${encodedPassword}`,
     );
   }
@@ -106,20 +107,38 @@ function getAuthenticationRulesWithToken(
   if (type === 'gitlab') {
     token = `gitlab-ci-token:${authToken}`;
   }
-  return getAuthenticationRules(url, token);
+  return getAuthenticationRules(url, type, token);
 }
 
 /**
  * Generates the authentication rules for later git usage for the given host
  * @link https://coolaj86.com/articles/vanilla-devops-git-credentials-cheatsheet/
+ * @param gitUrl Git repository URL
+ * @param hostType Git host type
+ * @param token Authentication token or `username:password` string
  */
 export function getAuthenticationRules(
   gitUrl: string,
+  hostType: string | undefined | null,
   token: string,
 ): AuthenticationRule[] {
   const authenticationRules = [];
   const hasUser = token.split(':').length > 1;
   const insteadUrl = parseGitUrl(gitUrl);
+  let sshPort = insteadUrl.port;
+
+  if (hostType === 'bitbucket-server') {
+    // For Bitbucket Server/Data Center, `source` must be `bitbucket-server`
+    // to generate HTTP(s) URLs correctly.
+    // https://github.com/IonicaBizau/git-url-parse/blob/28828546c148d58bbcff61409915a4e1e8f7eb11/lib/index.js#L304
+    insteadUrl.source = 'bitbucket-server';
+
+    if (!sshPort) {
+      // By default, bitbucket-server SSH port is 7999.
+      // For non-default port, the generated auth config will likely be incorrect.
+      sshPort = 7999;
+    }
+  }
 
   const url = { ...insteadUrl };
   const protocol = regEx(/^https?$/).test(url.protocol)
@@ -133,7 +152,7 @@ export function getAuthenticationRules(
     // only edge case, need to stringify ourself because the exact syntax is not supported by the library
     // https://github.com/IonicaBizau/git-url-parse/blob/246c9119fb42c2ea1c280028fe77c53eb34c190c/lib/index.js#L246
     insteadOf: `ssh://git@${insteadUrl.resource}${
-      insteadUrl.port ? `:${insteadUrl.port}` : ''
+      sshPort ? `:${sshPort}` : ''
     }/${insteadUrl.full_name}${insteadUrl.git_suffix ? '.git' : ''}`,
   });
 
@@ -141,7 +160,7 @@ export function getAuthenticationRules(
   url.token = hasUser ? token : `git:${token}`;
   authenticationRules.push({
     url: url.toString(protocol),
-    insteadOf: insteadUrl.toString('ssh'),
+    insteadOf: { ...insteadUrl, port: sshPort }.toString('ssh'),
   });
 
   // https protocol with no user as default fallback