Veiko Aasa b94e1ea596
gitweb: Run git commands as a web user
Fixes #2306.

Tested that all the gitweb tests pass in Debian stable and testing
containers.

Signed-off-by: Veiko Aasa <veiko17@disroot.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>
2022-12-29 15:20:38 -08:00

249 lines
8.7 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
"""FreedomBox app to configure Gitweb."""
import os
from django.utils.translation import gettext_lazy as _
from plinth import app as app_module
from plinth import frontpage, menu
from plinth.modules.apache.components import Webserver
from plinth.modules.backups.components import BackupRestore
from plinth.modules.firewall.components import Firewall
from plinth.modules.users.components import UsersAndGroups
from plinth.package import Packages
from . import manifest, privileged
from .forms import is_repo_url
from .manifest import GIT_REPO_PATH, REPO_DIR_OWNER
_description = [
_('Git is a distributed version-control system for tracking changes in '
'source code during software development. Gitweb provides a web '
'interface to Git repositories. You can browse history and content of '
'source code, use search to find relevant commits and code. '
'You can also clone repositories and upload code changes with a '
'command-line Git client or with multiple available graphical clients. '
'And you can share your code with people around the world.'),
_('To learn more on how to use Git visit '
'<a href="https://git-scm.com/docs/gittutorial">Git tutorial</a>.')
]
class GitwebApp(app_module.App):
"""FreedomBox app for Gitweb."""
app_id = 'gitweb'
_version = 2
def __init__(self):
"""Create components for the app."""
super().__init__()
groups = {'git-access': _('Read-write access to Git repositories')}
self.repos = []
info = app_module.Info(app_id=self.app_id, version=self._version,
name=_('Gitweb'), icon_filename='gitweb',
short_description=_('Simple Git Hosting'),
description=_description, manual_page='GitWeb',
clients=manifest.clients)
self.add(info)
menu_item = menu.Menu('menu-gitweb', info.name, info.short_description,
info.icon_filename, 'gitweb:index',
parent_url_name='apps')
self.add(menu_item)
shortcut = frontpage.Shortcut('shortcut-gitweb', info.name,
short_description=info.short_description,
icon=info.icon_filename, url='/gitweb/',
clients=info.clients,
login_required=True,
allowed_groups=list(groups))
self.add(shortcut)
packages = Packages('packages-gitweb', ['gitweb', 'highlight'])
self.add(packages)
firewall = Firewall('firewall-gitweb', info.name,
ports=['http', 'https'], is_external=True)
self.add(firewall)
webserver = Webserver('webserver-gitweb', 'gitweb-freedombox',
urls=['https://{host}/gitweb/'])
self.add(webserver)
self.auth_webserver = GitwebWebserverAuth('webserver-gitweb-auth',
'gitweb-freedombox-auth')
self.add(self.auth_webserver)
users_and_groups = UsersAndGroups('users-and-groups-gitweb',
groups=groups)
self.add(users_and_groups)
backup_restore = GitwebBackupRestore('backup-restore-gitweb',
**manifest.backup)
self.add(backup_restore)
def post_init(self):
"""Perform post initialization operations."""
if not self.needs_setup():
self.update_service_access()
def set_shortcut_login_required(self, login_required):
"""Change the login_required property of shortcut."""
shortcut = self.remove('shortcut-gitweb')
shortcut.login_required = login_required
self.add(shortcut)
def update_service_access(self):
"""Update the frontpage shortcut and webserver auth requirement."""
repos = get_repo_list()
if have_public_repos(repos):
self._enable_public_access()
else:
self._disable_public_access()
def _enable_public_access(self):
"""Allow Gitweb app to be accessed by anyone with access."""
if self.auth_webserver.is_conf_enabled():
self.auth_webserver.disable()
self.set_shortcut_login_required(False)
def _disable_public_access(self):
"""Allow Gitweb app to be accessed by logged-in users only."""
if not self.auth_webserver.is_conf_enabled():
self.auth_webserver.enable()
self.set_shortcut_login_required(True)
def setup(self, old_version):
"""Install and configure the app."""
super().setup(old_version)
privileged.setup()
self.enable()
class GitwebWebserverAuth(Webserver):
"""Component to handle Gitweb authentication webserver configuration."""
def is_conf_enabled(self):
"""Check whether Gitweb authentication configuration is enabled."""
return super().is_enabled()
def is_enabled(self):
"""Return if configuration is enabled or public access is enabled."""
repos = get_repo_list()
return have_public_repos(repos) or super().is_enabled()
def enable(self):
"""Enable apache configuration only if no public repository exists."""
repos = get_repo_list()
if not have_public_repos(repos):
super().enable()
class GitwebBackupRestore(BackupRestore):
"""Component to handle backup/restore for Gitweb."""
def restore_post(self, packet):
"""Update access after restoration of backups."""
super().restore_post(packet)
self.app.update_service_access()
def have_public_repos(repos):
"""Check for public repositories."""
return any((repo['access'] == 'public' for repo in repos))
def create_repo(repo, repo_description, owner, is_private):
"""Create a new repository or clone a remote repository."""
kwargs = {
'url': None,
'name': None,
'description': repo_description,
'owner': owner,
'is_private': is_private
}
if is_repo_url(repo):
kwargs['url'] = repo
# create a repo directory and set correct access rights
privileged.create_repo(prepare_only=True, **kwargs)
# start cloning in background
privileged.create_repo(skip_prepare=True, _run_in_background=True,
**kwargs)
else:
kwargs['name'] = repo
privileged.create_repo(**kwargs)
def get_repo_list():
"""List all git repositories."""
repos = []
if os.path.exists(GIT_REPO_PATH):
for repo in os.listdir(GIT_REPO_PATH):
if not repo.endswith('.git') or repo.startswith('.'):
continue
repo_info = {}
repo_info['name'] = repo[:-4]
private_file = os.path.join(GIT_REPO_PATH, repo, 'private')
if os.path.exists(private_file):
repo_info['access'] = 'private'
else:
repo_info['access'] = 'public'
progress_file = os.path.join(GIT_REPO_PATH, repo, 'clone_progress')
if os.path.exists(progress_file):
with open(progress_file, encoding='utf-8') as file_handle:
clone_progress = file_handle.read()
repo_info['clone_progress'] = clone_progress
repos.append(repo_info)
return sorted(repos, key=lambda repo: repo['name'])
def repo_info(repo):
"""Get information about repository."""
info = privileged.repo_info(repo, _run_as_user=REPO_DIR_OWNER)
if info['access'] == 'private':
info['is_private'] = True
else:
info['is_private'] = False
del info['access']
return info
def edit_repo(form_initial, form_cleaned):
"""Edit repository data."""
repo = form_initial['name']
if form_cleaned['name'] != repo:
privileged.rename_repo(repo, form_cleaned['name'])
repo = form_cleaned['name']
if form_cleaned['description'] != form_initial['description']:
privileged.set_repo_description(repo, form_cleaned['description'])
if form_cleaned['owner'] != form_initial['owner']:
privileged.set_repo_owner(repo, form_cleaned['owner'])
if form_cleaned['is_private'] != form_initial['is_private']:
if form_cleaned['is_private']:
privileged.set_repo_access(repo, 'private')
else:
privileged.set_repo_access(repo, 'public')
if form_cleaned['default_branch'] != form_initial['default_branch']:
privileged.set_default_branch(repo, form_cleaned['default_branch'],
_run_as_user=REPO_DIR_OWNER)