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#!/usr/bin/python
# -*- mode: python; coding: utf-8 -*-
# Copyright © 2008 Jeffrey C. Ollie
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
"""Make convenience symlinks for public git repositories.
This will make urls to get repositories on fedorapeople.org more convenient:
git://fedorapeople.org/git/$user/$repo.git
instead of:
git://fedorapeople.org/home/fedora/$user/public_git/$repo.git
For safety this should be run as a non-root user.
"""
import os
import pwd
import sys
if os.getuid() == 0:
sys.stderr.write('Do not run this as root!')
sys.exit(1)
symlink_dir = '/git'
existing_symlinks = {}
blocked_symlinks = set()
for filename in os.listdir(symlink_dir):
dst = os.path.join(symlink_dir, filename)
if not os.path.islink(dst):
print "oops: %s is not a symlink" % dst
blocked_symlinks.add(dst)
else:
existing_symlinks[dst] = os.readlink(dst)
unneeded_symlinks = existing_symlinks.copy()
needed_symlinks = {}
for (username, uid, gid, passwd, gecos, homedir, shell) in pwd.getpwall():
if uid < 100000:
continue
src = os.path.join(homedir, 'public_git')
if not os.path.exists(src):
continue
dst = os.path.join(symlink_dir, username)
needed_symlinks[dst] = src
try:
del unneeded_symlinks[dst]
except KeyError:
pass
for dst, src in needed_symlinks.iteritems():
if dst in blocked_symlinks:
sys.stderr.write("oops: %s is blocked!\n" % dst)
continue
if dst in existing_symlinks:
# make sure that symlink points to right place
if src != existing_symlinks[dst]:
sys.stderr.write("updating symlink %s: %s -> %s\n" % (dst, existing_symlinks[dst], src))
os.unlink(dst)
os.symlink(src, dst)
else:
# create symlinks that don't already exist
sys.stderr.write("new symlink: %s -> %s\n" % (dst, src))
os.symlink(src, dst)
# get rid of any symlinks we no longer need
for dst, src in unneeded_symlinks.iteritems():
sys.stdout.write("deleting symlink %s -> %s\n" % (dst, src))
os.unlink(dst)
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