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# RhodeCode VCSServer provides access to different vcs backends via network.
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# Copyright (C) 2014-2020 RhodeCode GmbH
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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import os
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import logging
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import itertools
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import mercurial
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import mercurial.error
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import mercurial.wireprotoserver
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import mercurial.hgweb.common
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import mercurial.hgweb.hgweb_mod
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import webob.exc
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from vcsserver import pygrack, exceptions, settings, git_lfs
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log = logging.getLogger(__name__)
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# propagated from mercurial documentation
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HG_UI_SECTIONS = [
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'alias', 'auth', 'decode/encode', 'defaults', 'diff', 'email', 'extensions',
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'format', 'merge-patterns', 'merge-tools', 'hooks', 'http_proxy', 'smtp',
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'patch', 'paths', 'profiling', 'server', 'trusted', 'ui', 'web',
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]
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class HgWeb(mercurial.hgweb.hgweb_mod.hgweb):
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"""Extension of hgweb that simplifies some functions."""
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def _get_view(self, repo):
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"""Views are not supported."""
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return repo
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def loadsubweb(self):
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"""The result is only used in the templater method which is not used."""
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return None
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def run(self):
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"""Unused function so raise an exception if accidentally called."""
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raise NotImplementedError
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def templater(self, req):
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"""Function used in an unreachable code path.
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This code is unreachable because we guarantee that the HTTP request,
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corresponds to a Mercurial command. See the is_hg method. So, we are
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never going to get a user-visible url.
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"""
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raise NotImplementedError
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def archivelist(self, nodeid):
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"""Unused function so raise an exception if accidentally called."""
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raise NotImplementedError
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def __call__(self, environ, start_response):
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"""Run the WSGI application.
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This may be called by multiple threads.
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"""
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from mercurial.hgweb import request as requestmod
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req = requestmod.parserequestfromenv(environ)
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res = requestmod.wsgiresponse(req, start_response)
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gen = self.run_wsgi(req, res)
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first_chunk = None
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try:
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data = gen.next()
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def first_chunk():
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yield data
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except StopIteration:
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pass
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if first_chunk:
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return itertools.chain(first_chunk(), gen)
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return gen
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def _runwsgi(self, req, res, repo):
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cmd = req.qsparams.get('cmd', '')
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if not mercurial.wireprotoserver.iscmd(cmd):
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# NOTE(marcink): for unsupported commands, we return bad request
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# internally from HG
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from mercurial.hgweb.common import statusmessage
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res.status = statusmessage(mercurial.hgweb.common.HTTP_BAD_REQUEST)
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res.setbodybytes('')
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return res.sendresponse()
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return super(HgWeb, self)._runwsgi(req, res, repo)
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def make_hg_ui_from_config(repo_config):
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baseui = mercurial.ui.ui()
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# clean the baseui object
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baseui._ocfg = mercurial.config.config()
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baseui._ucfg = mercurial.config.config()
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baseui._tcfg = mercurial.config.config()
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for section, option, value in repo_config:
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baseui.setconfig(section, option, value)
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# make our hgweb quiet so it doesn't print output
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baseui.setconfig('ui', 'quiet', 'true')
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return baseui
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def update_hg_ui_from_hgrc(baseui, repo_path):
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path = os.path.join(repo_path, '.hg', 'hgrc')
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if not os.path.isfile(path):
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log.debug('hgrc file is not present at %s, skipping...', path)
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return
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log.debug('reading hgrc from %s', path)
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cfg = mercurial.config.config()
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cfg.read(path)
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for section in HG_UI_SECTIONS:
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for k, v in cfg.items(section):
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log.debug('settings ui from file: [%s] %s=%s', section, k, v)
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baseui.setconfig(section, k, v)
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def create_hg_wsgi_app(repo_path, repo_name, config):
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"""
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Prepares a WSGI application to handle Mercurial requests.
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:param config: is a list of 3-item tuples representing a ConfigObject
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(it is the serialized version of the config object).
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"""
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log.debug("Creating Mercurial WSGI application")
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baseui = make_hg_ui_from_config(config)
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update_hg_ui_from_hgrc(baseui, repo_path)
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try:
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return HgWeb(repo_path, name=repo_name, baseui=baseui)
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except mercurial.error.RequirementError as e:
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raise exceptions.RequirementException(e)(e)
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class GitHandler(object):
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"""
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Handler for Git operations like push/pull etc
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"""
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def __init__(self, repo_location, repo_name, git_path, update_server_info,
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extras):
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if not os.path.isdir(repo_location):
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raise OSError(repo_location)
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self.content_path = repo_location
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self.repo_name = repo_name
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self.repo_location = repo_location
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self.extras = extras
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self.git_path = git_path
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self.update_server_info = update_server_info
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def __call__(self, environ, start_response):
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app = webob.exc.HTTPNotFound()
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candidate_paths = (
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self.content_path, os.path.join(self.content_path, '.git'))
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for content_path in candidate_paths:
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try:
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app = pygrack.GitRepository(
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self.repo_name, content_path, self.git_path,
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self.update_server_info, self.extras)
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break
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except OSError:
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continue
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return app(environ, start_response)
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def create_git_wsgi_app(repo_path, repo_name, config):
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"""
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Creates a WSGI application to handle Git requests.
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:param config: is a dictionary holding the extras.
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"""
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git_path = settings.GIT_EXECUTABLE
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update_server_info = config.pop('git_update_server_info')
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app = GitHandler(
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repo_path, repo_name, git_path, update_server_info, config)
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return app
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class GitLFSHandler(object):
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"""
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Handler for Git LFS operations
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"""
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def __init__(self, repo_location, repo_name, git_path, update_server_info,
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extras):
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if not os.path.isdir(repo_location):
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raise OSError(repo_location)
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self.content_path = repo_location
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self.repo_name = repo_name
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self.repo_location = repo_location
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self.extras = extras
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self.git_path = git_path
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self.update_server_info = update_server_info
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def get_app(self, git_lfs_enabled, git_lfs_store_path, git_lfs_http_scheme):
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app = git_lfs.create_app(git_lfs_enabled, git_lfs_store_path, git_lfs_http_scheme)
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return app
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def create_git_lfs_wsgi_app(repo_path, repo_name, config):
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git_path = settings.GIT_EXECUTABLE
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update_server_info = config.pop('git_update_server_info')
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git_lfs_enabled = config.pop('git_lfs_enabled')
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git_lfs_store_path = config.pop('git_lfs_store_path')
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git_lfs_http_scheme = config.pop('git_lfs_http_scheme', 'http')
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app = GitLFSHandler(
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repo_path, repo_name, git_path, update_server_info, config)
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return app.get_app(git_lfs_enabled, git_lfs_store_path, git_lfs_http_scheme)
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