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add support for setting the SSH identity per-repo

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This commit is contained in:
Ralf Jung 2015-02-22 21:11:19 +01:00
parent 3316a2663f
commit 6843793205
2 changed files with 40 additions and 3 deletions
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15
git_mirror.py
View file

@ -21,7 +21,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#==============================================================================
import sys, os, subprocess
import sys, os, os.path, subprocess
import configparser, itertools, json, re
import email.mime.text, email.utils, smtplib
@ -91,6 +91,7 @@ class Repo:
self.name = name
self.local = conf['local']
self.owner = conf['owner'] # email address to notify in case of problems
self.deploy_key = conf['deploy-key'] # the SSH ky used for authenticating against remote hosts
self.mirrors = {} # maps mirrors to their URLs
mirror_prefix = 'mirror-'
for name in filter(lambda s: s.startswith(mirror_prefix), conf.keys()):
@ -107,10 +108,18 @@ class Repo:
return mirror
return None
def setup_env(self):
'''Setup the environment to work with this repository'''
os.chdir(self.local)
ssh_set_ident = os.path.join(os.path.dirname(__file__), 'ssh-set-ident.conf')
os.setenv('GIT_SSH', ssh_set_ident)
ssh_ident = os.path.join(os.path.expanduser('~/.ssh'), self.deploy_key)
os.setenv('SSH_IDENT', ssh_ident)
def update_mirrors(self, ref, oldsha, newsha, except_mirrors = [], suppress_stderr = False):
'''Update the <ref> from <oldsha> to <newsha> on all mirrors. The update must already have happened locally.'''
assert len(oldsha) == 40 and len(newsha) == 40, "These are not valid SHAs."
os.chdir(self.local)
self.setup_env()
# check for a forced update
is_forced = newsha != git_nullsha and oldsha != git_nullsha and git_is_forced_update(oldsha, newsha)
# tell all the mirrors
@ -127,7 +136,7 @@ class Repo:
def update_ref_from_mirror(self, ref, oldsha, newsha, mirror, suppress_stderr = False):
'''Update the local version of this <ref> to what's currently on the given <mirror>. <oldsha> and <newsha> are checked. Then update all the other mirrors.'''
os.chdir(self.local)
self.setup_env()
url = self.mirrors[mirror]
# first check whether the remote really is at newsha
remote_state, code = git.ls_remote(url, ref)

28
ssh-set-ident.sh Normal file
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@ -0,0 +1,28 @@
#!/bin/sh
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#==============================================================================
# This sets the SSH identitiy based on an environment variable. That makes it possible for the git-mirror
# scripts to use git with a particular SSH identity.
exec ssh -i "$SSH_IDENT" "$@"