Safe Directory v2 update (#764)

* set safe directory when running checkout

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+## v2.4.1
+- [Set the safe directory option on git to prevent git commands failing when running in containers](https://github.com/actions/checkout/pull/762)
+
 ## v2.3.1
 
 - [Fix default branch resolution for .wiki and when using SSH](https://github.com/actions/checkout/pull/284)

__test__/git-auth-helper.test.ts

@@ -643,10 +643,11 @@ describe('git-auth-helper tests', () => {
     expect(gitConfigContent.indexOf('http.')).toBeLessThan(0)
   })
 
-  const removeGlobalAuth_removesOverride = 'removeGlobalAuth removes override'
-  it(removeGlobalAuth_removesOverride, async () => {
+  const removeGlobalConfig_removesOverride =
+    'removeGlobalConfig removes override'
+  it(removeGlobalConfig_removesOverride, async () => {
     // Arrange
-    await setup(removeGlobalAuth_removesOverride)
+    await setup(removeGlobalConfig_removesOverride)
     const authHelper = gitAuthHelper.createAuthHelper(git, settings)
     await authHelper.configureAuth()
     await authHelper.configureGlobalAuth()
@@ -655,7 +656,7 @@ describe('git-auth-helper tests', () => {
     await fs.promises.stat(path.join(git.env['HOME'], '.gitconfig'))
 
     // Act
-    await authHelper.removeGlobalAuth()
+    await authHelper.removeGlobalConfig()
 
     // Assert
     expect(git.env['HOME']).toBeUndefined()

dist/index.js

@@ -6572,9 +6572,13 @@ class GitAuthHelper {
             yield this.configureToken();
         });
     }
-    configureGlobalAuth() {
-        var _a;
+    configureTempGlobalConfig(repositoryPath) {
+        var _a, _b;
         return __awaiter(this, void 0, void 0, function* () {
+            // Already setup global config
+            if (((_a = this.temporaryHomePath) === null || _a === void 0 ? void 0 : _a.length) > 0) {
+                return path.join(this.temporaryHomePath, '.gitconfig');
+            }
             // Create a temp home directory
             const runnerTemp = process.env['RUNNER_TEMP'] || '';
             assert.ok(runnerTemp, 'RUNNER_TEMP is not defined');
@@ -6590,7 +6594,7 @@ class GitAuthHelper {
                 configExists = true;
             }
             catch (err) {
-                if (((_a = err) === null || _a === void 0 ? void 0 : _a.code) !== 'ENOENT') {
+                if (((_b = err) === null || _b === void 0 ? void 0 : _b.code) !== 'ENOENT') {
                     throw err;
                 }
             }
@@ -6601,10 +6605,25 @@ class GitAuthHelper {
             else {
                 yield fs.promises.writeFile(newGitConfigPath, '');
             }
-            try {
             // Override HOME
             core.info(`Temporarily overriding HOME='${this.temporaryHomePath}' before making global git config changes`);
             this.git.setEnvironmentVariable('HOME', this.temporaryHomePath);
+            // Setup the workspace as a safe directory, so if we pass this into a container job with a different user it doesn't fail
+            // Otherwise all git commands we run in a container fail
+            core.info(`Adding working directory to the temporary git global config as a safe directory`);
+            yield this.git
+                .config('safe.directory', repositoryPath !== null && repositoryPath !== void 0 ? repositoryPath : this.settings.repositoryPath, true, true)
+                .catch(error => {
+                core.info(`Failed to initialize safe directory with error: ${error}`);
+            });
+            return newGitConfigPath;
+        });
+    }
+    configureGlobalAuth() {
+        return __awaiter(this, void 0, void 0, function* () {
+            // 'configureTempGlobalConfig' noops if already set, just returns the path
+            const newGitConfigPath = yield this.configureTempGlobalConfig();
+            try {
                 // Configure the token
                 yield this.configureToken(newGitConfigPath, true);
                 // Configure HTTPS instead of SSH
@@ -6657,11 +6676,14 @@ class GitAuthHelper {
             yield this.removeToken();
         });
     }
-    removeGlobalAuth() {
+    removeGlobalConfig() {
+        var _a;
         return __awaiter(this, void 0, void 0, function* () {
+            if (((_a = this.temporaryHomePath) === null || _a === void 0 ? void 0 : _a.length) > 0) {
                 core.debug(`Unsetting HOME override`);
                 this.git.removeEnvironmentVariable('HOME');
                 yield io.rmRF(this.temporaryHomePath);
+            }
         });
     }
     configureSsh() {
@@ -7326,6 +7348,12 @@ function getSource(settings) {
         core.startGroup('Getting Git version info');
         const git = yield getGitCommandManager(settings);
         core.endGroup();
+        let authHelper = null;
+        try {
+            if (git) {
+                authHelper = gitAuthHelper.createAuthHelper(git, settings);
+                yield authHelper.configureTempGlobalConfig();
+            }
             // Prepare existing directory, otherwise recreate
             if (isExisting) {
                 yield gitDirectoryHelper.prepareExistingDirectory(git, settings.repositoryPath, repositoryUrl, settings.clean, settings.ref);
@@ -7358,8 +7386,10 @@ function getSource(settings) {
                 core.warning(`Unable to turn off git automatic garbage collection. The git fetch operation may trigger garbage collection and cause a delay.`);
             }
             core.endGroup();
-        const authHelper = gitAuthHelper.createAuthHelper(git, settings);
-        try {
+            // If we didn't initialize it above, do it now
+            if (!authHelper) {
+                authHelper = gitAuthHelper.createAuthHelper(git, settings);
+            }
             // Configure auth
             core.startGroup('Setting up auth');
             yield authHelper.configureAuth();
@@ -7415,7 +7445,6 @@ function getSource(settings) {
             core.endGroup();
             // Submodules
             if (settings.submodules) {
-                try {
                 // Temporarily override global config
                 core.startGroup('Setting up auth for fetching submodules');
                 yield authHelper.configureGlobalAuth();
@@ -7433,11 +7462,6 @@ function getSource(settings) {
                     core.endGroup();
                 }
             }
-                finally {
-                    // Remove temporary global config override
-                    yield authHelper.removeGlobalAuth();
-                }
-            }
             // Get commit information
             const commitInfo = yield git.log1();
             // Log commit sha
@@ -7447,11 +7471,14 @@ function getSource(settings) {
         }
         finally {
             // Remove auth
+            if (authHelper) {
                 if (!settings.persistCredentials) {
                     core.startGroup('Removing auth');
                     yield authHelper.removeAuth();
                     core.endGroup();
                 }
+                authHelper.removeGlobalConfig();
+            }
         }
     });
 }
@@ -7472,7 +7499,13 @@ function cleanup(repositoryPath) {
         }
         // Remove auth
         const authHelper = gitAuthHelper.createAuthHelper(git);
+        try {
+            yield authHelper.configureTempGlobalConfig(repositoryPath);
             yield authHelper.removeAuth();
+        }
+        finally {
+            yield authHelper.removeGlobalConfig();
+        }
     });
 }
 exports.cleanup = cleanup;

src/git-auth-helper.ts

@@ -19,8 +19,9 @@ export interface IGitAuthHelper {
   configureAuth(): Promise<void>
   configureGlobalAuth(): Promise<void>
   configureSubmoduleAuth(): Promise<void>
+  configureTempGlobalConfig(repositoryPath?: string): Promise<string>
   removeAuth(): Promise<void>
-  removeGlobalAuth(): Promise<void>
+  removeGlobalConfig(): Promise<void>
 }
 
 export function createAuthHelper(
@@ -80,7 +81,11 @@ class GitAuthHelper {
     await this.configureToken()
   }
 
-  async configureGlobalAuth(): Promise<void> {
+  async configureTempGlobalConfig(repositoryPath?: string): Promise<string> {
+    // Already setup global config
+    if (this.temporaryHomePath?.length > 0) {
+      return path.join(this.temporaryHomePath, '.gitconfig')
+    }
     // Create a temp home directory
     const runnerTemp = process.env['RUNNER_TEMP'] || ''
     assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
@@ -110,13 +115,34 @@ class GitAuthHelper {
       await fs.promises.writeFile(newGitConfigPath, '')
     }
 
-    try {
     // Override HOME
     core.info(
       `Temporarily overriding HOME='${this.temporaryHomePath}' before making global git config changes`
     )
     this.git.setEnvironmentVariable('HOME', this.temporaryHomePath)
 
+    // Setup the workspace as a safe directory, so if we pass this into a container job with a different user it doesn't fail
+    // Otherwise all git commands we run in a container fail
+    core.info(
+      `Adding working directory to the temporary git global config as a safe directory`
+    )
+    await this.git
+      .config(
+        'safe.directory',
+        repositoryPath ?? this.settings.repositoryPath,
+        true,
+        true
+      )
+      .catch(error => {
+        core.info(`Failed to initialize safe directory with error: ${error}`)
+      })
+    return newGitConfigPath
+  }
+
+  async configureGlobalAuth(): Promise<void> {
+    // 'configureTempGlobalConfig' noops if already set, just returns the path
+    const newGitConfigPath = await this.configureTempGlobalConfig()
+    try {
       // Configure the token
       await this.configureToken(newGitConfigPath, true)
 
@@ -181,11 +207,13 @@ class GitAuthHelper {
     await this.removeToken()
   }
 
-  async removeGlobalAuth(): Promise<void> {
+  async removeGlobalConfig(): Promise<void> {
+    if (this.temporaryHomePath?.length > 0) {
       core.debug(`Unsetting HOME override`)
       this.git.removeEnvironmentVariable('HOME')
       await io.rmRF(this.temporaryHomePath)
     }
+  }
 
   private async configureSsh(): Promise<void> {
     if (!this.settings.sshKey) {

src/git-source-provider.ts

@@ -36,6 +36,13 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
   const git = await getGitCommandManager(settings)
   core.endGroup()
 
+  let authHelper: gitAuthHelper.IGitAuthHelper | null = null
+  try {
+    if (git) {
+      authHelper = gitAuthHelper.createAuthHelper(git, settings)
+      await authHelper.configureTempGlobalConfig()
+    }
+
     // Prepare existing directory, otherwise recreate
     if (isExisting) {
       await gitDirectoryHelper.prepareExistingDirectory(
@@ -96,8 +103,10 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
     }
     core.endGroup()
 
-  const authHelper = gitAuthHelper.createAuthHelper(git, settings)
-  try {
+    // If we didn't initialize it above, do it now
+    if (!authHelper) {
+      authHelper = gitAuthHelper.createAuthHelper(git, settings)
+    }
     // Configure auth
     core.startGroup('Setting up auth')
     await authHelper.configureAuth()
@@ -170,7 +179,6 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
 
     // Submodules
     if (settings.submodules) {
-      try {
       // Temporarily override global config
       core.startGroup('Setting up auth for fetching submodules')
       await authHelper.configureGlobalAuth()
@@ -179,10 +187,7 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
       // Checkout submodules
       core.startGroup('Fetching submodules')
       await git.submoduleSync(settings.nestedSubmodules)
-        await git.submoduleUpdate(
-          settings.fetchDepth,
-          settings.nestedSubmodules
-        )
+      await git.submoduleUpdate(settings.fetchDepth, settings.nestedSubmodules)
       await git.submoduleForeach(
         'git config --local gc.auto 0',
         settings.nestedSubmodules
@@ -195,10 +200,6 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
         await authHelper.configureSubmoduleAuth()
         core.endGroup()
       }
-      } finally {
-        // Remove temporary global config override
-        await authHelper.removeGlobalAuth()
-      }
     }
 
     // Get commit information
@@ -218,11 +219,14 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
     )
   } finally {
     // Remove auth
+    if (authHelper) {
       if (!settings.persistCredentials) {
         core.startGroup('Removing auth')
         await authHelper.removeAuth()
         core.endGroup()
       }
+      authHelper.removeGlobalConfig()
+    }
   }
 }
 
@@ -244,7 +248,12 @@ export async function cleanup(repositoryPath: string): Promise<void> {
 
   // Remove auth
   const authHelper = gitAuthHelper.createAuthHelper(git)
+  try {
+    await authHelper.configureTempGlobalConfig(repositoryPath)
     await authHelper.removeAuth()
+  } finally {
+    await authHelper.removeGlobalConfig()
+  }
 }
 
 async function getGitCommandManager(