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## Overview This PR introduces granular permission controls for Gitea Actions tokens (`GITEA_TOKEN`), aligning Gitea's security model with GitHub Actions standards while maintaining compatibility with Gitea's unique repository unit system. It addresses the need for finer access control by allowing administrators and repository owners to define default token permissions, set maximum permission ceilings, and control cross-repository access within organizations. ## Key Features ### 1. Granular Token Permissions - **Standard Keyword Support**: Implements support for the `permissions:` keyword in workflow and job YAML files (e.g., `contents: read`, `issues: write`). - **Permission Modes**: - **Permissive**: Default write access for most units (backwards compatible). - **Restricted**: Default read-only access for `contents` and `packages`, with no access to other units. - ~~**Custom**: Allows defining specific default levels for each unit type (Code, Issues, PRs, Packages, etc.).~~**EDIT removed UI was confusing** - **Clamping Logic**: Workflow-defined permissions are automatically "clamped" by repository or organization-level maximum settings. Workflows cannot escalate their own permissions beyond these limits. ### 2. Organization & Repository Settings - **Settings UI**: Added new settings pages at both Organization and Repository levels to manage Actions token defaults and maximums. - **Inheritance**: Repositories can be configured to "Follow organization-level configuration," simplifying management across large organizations. - **Cross-Repository Access**: Added a policy to control whether Actions workflows can access other repositories or packages within the same organization. This can be set to "None," "All," or restricted to a "Selected" list of repositories. ### 3. Security Hardening - **Fork Pull Request Protection**: Tokens for workflows triggered by pull requests from forks are strictly enforced as read-only, regardless of repository settings. - ~~**Package Access**: Actions tokens can now only access packages explicitly linked to a repository, with cross-repo access governed by the organization's security policy.~~ **EDIT removed https://github.com/go-gitea/gitea/pull/36173#issuecomment-3873675346** - **Git Hook Integration**: Propagates Actions Task IDs to git hooks to ensure that pushes performed by Actions tokens respect the specific permissions granted at runtime. ### 4. Technical Implementation - **Permission Persistence**: Parsed permissions are calculated at job creation and stored in the `action_run_job` table. This ensures the token's authority is deterministic throughout the job's lifecycle. - **Parsing Priority**: Implemented a priority system in the YAML parser where the broad `contents` scope is applied first, allowing granular scopes like `code` or `releases` to override it for precise control. - **Re-runs**: Permissions are re-evaluated during a job re-run to incorporate any changes made to repository settings in the interim. ### How to Test 1. **Unit Tests**: Run `go test ./services/actions/...` and `go test ./models/repo/...` to verify parsing logic and permission clamping. 2. **Integration Tests**: Comprehensive tests have been added to `tests/integration/actions_job_token_test.go` covering: - Permissive vs. Restricted mode behavior. - YAML `permissions:` keyword evaluation. - Organization cross-repo access policies. - Resource access (Git, API, and Packages) under various permission configs. 3. **Manual Verification**: - Navigate to **Site/Org/Repo Settings -> Actions -> General**. - Change "Default Token Permissions" and verify that newly triggered workflows reflect these changes in their `GITEA_TOKEN` capabilities. - Attempt a cross-repo API call from an Action and verify the Org policy is enforced. ## Documentation Added a PR in gitea's docs for this : https://gitea.com/gitea/docs/pulls/318 ## UI: <img width="1366" height="619" alt="Screenshot 2026-01-24 174112" src="https://github.com/user-attachments/assets/bfa29c9a-4ea5-4346-9410-16d491ef3d44" /> <img width="1360" height="621" alt="Screenshot 2026-01-24 174048" src="https://github.com/user-attachments/assets/d5ec46c8-9a13-4874-a6a4-fb379936cef5" /> /fixes #24635 /claim #24635 --------- Signed-off-by: Excellencedev <ademiluyisuccessandexcellence@gmail.com> Signed-off-by: ChristopherHX <christopher.homberger@web.de> Signed-off-by: silverwind <me@silverwind.io> Signed-off-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: ChristopherHX <christopher.homberger@web.de> Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: Zettat123 <zettat123@gmail.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
133 lines
4.8 KiB
Go
133 lines
4.8 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package private
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import (
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"context"
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"fmt"
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"net/url"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/httplib"
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"code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/setting"
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)
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// Git environment variables
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const (
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GitAlternativeObjectDirectories = "GIT_ALTERNATE_OBJECT_DIRECTORIES"
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GitObjectDirectory = "GIT_OBJECT_DIRECTORY"
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GitQuarantinePath = "GIT_QUARANTINE_PATH"
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GitPushOptionCount = "GIT_PUSH_OPTION_COUNT"
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)
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// HookOptions represents the options for the Hook calls
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type HookOptions struct {
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OldCommitIDs []string
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NewCommitIDs []string
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RefFullNames []git.RefName
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UserID int64
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UserName string
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GitObjectDirectory string
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GitAlternativeObjectDirectories string
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GitQuarantinePath string
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GitPushOptions GitPushOptions
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PullRequestID int64
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PushTrigger repository.PushTrigger
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DeployKeyID int64 // if the pusher is a DeployKey, then UserID is the repo's org user.
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IsWiki bool
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ActionsTaskID int64 // if the pusher is an Actions user, the task ID
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}
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// SSHLogOption ssh log options
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type SSHLogOption struct {
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IsError bool
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Message string
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}
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// HookPostReceiveResult represents an individual result from PostReceive
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type HookPostReceiveResult struct {
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Results []HookPostReceiveBranchResult
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RepoWasEmpty bool
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Err string
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}
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// HookPostReceiveBranchResult represents an individual branch result from PostReceive
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type HookPostReceiveBranchResult struct {
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Message bool
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Create bool
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Branch string
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URL string
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}
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// HookProcReceiveResult represents an individual result from ProcReceive
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type HookProcReceiveResult struct {
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Results []HookProcReceiveRefResult
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Err string
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}
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// HookProcReceiveRefResult represents an individual result from ProcReceive
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type HookProcReceiveRefResult struct {
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OldOID string
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NewOID string
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Ref string
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OriginalRef git.RefName
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IsForcePush bool
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IsNotMatched bool
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Err string
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IsCreatePR bool
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URL string
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ShouldShowMessage bool
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HeadBranch string
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}
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func newInternalRequestAPIForHooks(ctx context.Context, hookName, ownerName, repoName string, opts HookOptions) *httplib.Request {
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reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/%s/%s/%s", hookName, url.PathEscape(ownerName), url.PathEscape(repoName))
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req := newInternalRequestAPI(ctx, reqURL, "POST", opts)
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// This "timeout" applies to http.Client's timeout: A Timeout of zero means no timeout.
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// This "timeout" was previously set to `time.Duration(60+len(opts.OldCommitIDs))` seconds, but it caused unnecessary timeout failures.
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// It should be good enough to remove the client side timeout, only respect the "ctx" and server side timeout.
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req.SetReadWriteTimeout(0)
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return req
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}
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// HookPreReceive check whether the provided commits are allowed
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func HookPreReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) ResponseExtra {
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req := newInternalRequestAPIForHooks(ctx, "pre-receive", ownerName, repoName, opts)
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_, extra := requestJSONResp(req, &ResponseText{})
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return extra
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}
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// HookPostReceive updates services and users
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func HookPostReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) (*HookPostReceiveResult, ResponseExtra) {
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req := newInternalRequestAPIForHooks(ctx, "post-receive", ownerName, repoName, opts)
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return requestJSONResp(req, &HookPostReceiveResult{})
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}
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// HookProcReceive proc-receive hook
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func HookProcReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) (*HookProcReceiveResult, ResponseExtra) {
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req := newInternalRequestAPIForHooks(ctx, "proc-receive", ownerName, repoName, opts)
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return requestJSONResp(req, &HookProcReceiveResult{})
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}
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// SetDefaultBranch will set the default branch to the provided branch for the provided repository
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func SetDefaultBranch(ctx context.Context, ownerName, repoName, branch string) ResponseExtra {
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reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/set-default-branch/%s/%s/%s",
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url.PathEscape(ownerName),
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url.PathEscape(repoName),
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url.PathEscape(branch),
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)
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req := newInternalRequestAPI(ctx, reqURL, "POST")
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_, extra := requestJSONResp(req, &ResponseText{})
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return extra
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}
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// SSHLog sends ssh error log response
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func SSHLog(ctx context.Context, isErr bool, msg string) error {
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reqURL := setting.LocalURL + "api/internal/ssh/log"
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req := newInternalRequestAPI(ctx, reqURL, "POST", &SSHLogOption{IsError: isErr, Message: msg})
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_, extra := requestJSONResp(req, &ResponseText{})
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return extra.Error
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}
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