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# -*- coding: utf-8 -*-
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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, see <http://www.gnu.org/licenses/>.
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import logging
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import os
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from kallithea.lib.hooks import log_pull_action
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from kallithea.lib.utils import make_ui
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from kallithea.lib.vcs.backends.ssh import BaseSshHandler
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from kallithea.lib.vcs.utils import safe_str
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log = logging.getLogger(__name__)
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class GitSshHandler(BaseSshHandler):
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vcs_type = 'git'
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@classmethod
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def make(cls, ssh_command_parts):
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r"""
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>>> import shlex
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>>> GitSshHandler.make(shlex.split("git-upload-pack '/foo bar'")).repo_name
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u'foo bar'
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>>> GitSshHandler.make(shlex.split("git-upload-pack '/foo bar'")).verb
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'git-upload-pack'
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>>> GitSshHandler.make(shlex.split(" git-upload-pack /blåbærgrød ")).repo_name # might not be necessary to support no quoting ... but we can
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u'bl\xe5b\xe6rgr\xf8d'
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>>> GitSshHandler.make(shlex.split('''git-upload-pack "/foo'bar"''')).repo_name
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u"foo'bar"
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>>> GitSshHandler.make(shlex.split("git-receive-pack '/foo'")).repo_name
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u'foo'
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>>> GitSshHandler.make(shlex.split("git-receive-pack '/foo'")).verb
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'git-receive-pack'
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>>> GitSshHandler.make(shlex.split("/bin/git-upload-pack '/foo'")) # ssh-serve will report 'SSH command %r is not supported'
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>>> GitSshHandler.make(shlex.split('''git-upload-pack /foo bar''')) # ssh-serve will report 'SSH command %r is not supported'
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>>> shlex.split("git-upload-pack '/foo'bar' x") # ssh-serve will report: Error parsing SSH command "...": No closing quotation
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Traceback (most recent call last):
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ValueError: No closing quotation
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>>> GitSshHandler.make(shlex.split('hg -R foo serve --stdio')) # not handled here
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"""
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if (len(ssh_command_parts) == 2 and
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ssh_command_parts[0] in ['git-upload-pack', 'git-receive-pack'] and
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ssh_command_parts[1].startswith('/')
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):
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return cls(ssh_command_parts[1][1:], ssh_command_parts[0])
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return None
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def __init__(self, repo_name, verb):
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BaseSshHandler.__init__(self, repo_name)
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self.verb = verb
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def _serve(self):
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if self.verb == 'git-upload-pack': # action 'pull'
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# base class called set_hook_environment - action is hardcoded to 'pull'
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log_pull_action(ui=make_ui(), repo=self.db_repo.scm_instance._repo)
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else: # probably verb 'git-receive-pack', action 'push'
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if not self.allow_push:
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self.exit('Push access to %r denied' % safe_str(self.repo_name))
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# Note: push logging is handled by Git post-receive hook
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# git shell is not a real shell but use shell inspired quoting *inside* the argument.
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# Per https://github.com/git/git/blob/v2.22.0/quote.c#L12 :
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# The path must be "'" quoted, but "'" and "!" must exit the quoting and be "\" escaped
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quoted_abspath = "'%s'" % self.db_repo.repo_full_path.replace("'", r"'\''").replace("!", r"'\!'")
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newcmd = ['git', 'shell', '-c', "%s %s" % (self.verb, quoted_abspath)]
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log.debug('Serving: %s', newcmd)
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os.execvp(newcmd[0], newcmd)
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self.exit("Failed to exec 'git' as %s" % newcmd)
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