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Docusaurus-ify (#26051)
This PR cleans up the docs in a way to make them simpler to ingest by our [docs repo](https://gitea.com/gitea/gitea-docusaurus). 1. It includes all of the sed invocations our ingestion did, removing the need to do it at build time. 2. It replaces the shortcode variable replacement method with `@variable@` style, simply for easier sed invocations when required. 3. It removes unused files and moves the docs up a level as cleanup. --------- Signed-off-by: jolheiser <john.olheiser@gmail.com>
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John Olheiser
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docs/content/administration/signing.en-us.md
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175
docs/content/administration/signing.en-us.md
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---
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date: "2019-08-17T10:20:00+01:00"
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title: "GPG Commit Signatures"
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slug: "signing"
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sidebar_position: 50
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toc: false
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draft: false
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aliases:
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- /en-us/signing
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menu:
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sidebar:
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parent: "administration"
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name: "GPG Commit Signatures"
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sidebar_position: 50
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identifier: "signing"
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---
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# GPG Commit Signatures
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Gitea will verify GPG commit signatures in the provided tree by
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checking if the commits are signed by a key within the Gitea database,
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or if the commit matches the default key for Git.
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Keys are not checked to determine if they have expired or revoked.
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Keys are also not checked with keyservers.
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A commit will be marked with a grey unlocked icon if no key can be
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found to verify it. If a commit is marked with a red unlocked icon,
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it is reported to be signed with a key with an id.
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Please note: The signer of a commit does not have to be an author or
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committer of a commit.
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This functionality requires Git >= 1.7.9 but for full functionality
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this requires Git >= 2.0.0.
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## Automatic Signing
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There are a number of places where Gitea will generate commits itself:
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- Repository Initialisation
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- Wiki Changes
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- CRUD actions using the editor or the API
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- Merges from Pull Requests
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Depending on configuration and server trust you may want Gitea to
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sign these commits.
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## Installing and generating a GPG key for Gitea
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It is up to a server administrator to determine how best to install
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a signing key. Gitea generates all its commits using the server `git`
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command at present - and therefore the server `gpg` will be used for
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signing (if configured.) Administrators should review best-practices
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for GPG - in particular it is probably advisable to only install a
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signing secret subkey without the master signing and certifying secret
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key.
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## General Configuration
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Gitea's configuration for signing can be found with the
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`[repository.signing]` section of `app.ini`:
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```ini
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...
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[repository.signing]
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SIGNING_KEY = default
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SIGNING_NAME =
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SIGNING_EMAIL =
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INITIAL_COMMIT = always
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CRUD_ACTIONS = pubkey, twofa, parentsigned
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WIKI = never
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MERGES = pubkey, twofa, basesigned, commitssigned
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...
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```
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### `SIGNING_KEY`
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The first option to discuss is the `SIGNING_KEY`. There are three main
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options:
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- `none` - this prevents Gitea from signing any commits
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- `default` - Gitea will default to the key configured within `git config`
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- `KEYID` - Gitea will sign commits with the gpg key with the ID
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`KEYID`. In this case you should provide a `SIGNING_NAME` and
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`SIGNING_EMAIL` to be displayed for this key.
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The `default` option will interrogate `git config` for
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`commit.gpgsign` option - if this is set, then it will use the results
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of the `user.signingkey`, `user.name` and `user.email` as appropriate.
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Please note: by adjusting Git's `config` file within Gitea's
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repositories, `SIGNING_KEY=default` could be used to provide different
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signing keys on a per-repository basis. However, this is clearly not an
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ideal UI and therefore subject to change.
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**Since 1.17**, Gitea runs git in its own home directory `[git].HOME_PATH` (default to `%(APP_DATA_PATH)/home`)
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and uses its own config `{[git].HOME_PATH}/.gitconfig`.
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If you have your own customized git config for Gitea, you should set these configs in system git config (aka `/etc/gitconfig`)
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or the Gitea internal git config `{[git].HOME_PATH}/.gitconfig`.
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Related home files for git command (like `.gnupg`) should also be put in Gitea's git home directory `[git].HOME_PATH`.
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If you like to keep the `.gnupg` directory outside of `{[git].HOME_PATH}/`, consider setting the `$GNUPGHOME` environment variable to your preferred location.
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### `INITIAL_COMMIT`
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This option determines whether Gitea should sign the initial commit
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when creating a repository. The possible values are:
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- `never`: Never sign
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- `pubkey`: Only sign if the user has a public key
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- `twofa`: Only sign if the user logs in with two factor authentication
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- `always`: Always sign
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Options other than `never` and `always` can be combined as a comma
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separated list. The commit will be signed if all selected options are true.
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### `WIKI`
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This options determines if Gitea should sign commits to the Wiki.
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The possible values are:
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- `never`: Never sign
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- `pubkey`: Only sign if the user has a public key
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- `twofa`: Only sign if the user logs in with two-factor authentication
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- `parentsigned`: Only sign if the parent commit is signed.
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- `always`: Always sign
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Options other than `never` and `always` can be combined as a comma
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separated list. The commit will be signed if all selected options are true.
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### `CRUD_ACTIONS`
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This option determines if Gitea should sign commits from the web
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editor or API CRUD actions. The possible values are:
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- `never`: Never sign
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- `pubkey`: Only sign if the user has a public key
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- `twofa`: Only sign if the user logs in with two-factor authentication
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- `parentsigned`: Only sign if the parent commit is signed.
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- `always`: Always sign
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Options other than `never` and `always` can be combined as a comma
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separated list. The change will be signed if all selected options are true.
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### `MERGES`
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This option determines if Gitea should sign merge commits from PRs.
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The possible options are:
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- `never`: Never sign
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- `pubkey`: Only sign if the user has a public key
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- `twofa`: Only sign if the user logs in with two-factor authentication
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- `basesigned`: Only sign if the parent commit in the base repo is signed.
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- `headsigned`: Only sign if the head commit in the head branch is signed.
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- `commitssigned`: Only sign if all the commits in the head branch to the merge point are signed.
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- `approved`: Only sign approved merges to a protected branch.
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- `always`: Always sign
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Options other than `never` and `always` can be combined as a comma
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separated list. The merge will be signed if all selected options are true.
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## Obtaining the Public Key of the Signing Key
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The public key used to sign Gitea's commits can be obtained from the API at:
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```sh
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/api/v1/signing-key.gpg
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```
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In cases where there is a repository specific key this can be obtained from:
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```sh
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/api/v1/repos/:username/:reponame/signing-key.gpg
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```
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