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git-repo/repo
Mike Frysinger d75ca2eb9d launcher: make missing .repo/repo/repo an error 
If the specified repo dir doesn't actually have a `repo` program,
we only show a warning before continuing on, and then we fail in
weird ways.  Since we really need the repo dir to contain repo,
have this be fatal and delete the results.

Bug: https://crbug.com/gerrit/13526
Change-Id: Icee4cba96136d470cbb459a81918c40205078f98
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/343538
Reviewed-by: LaMont Jones <lamontjones@google.com>
Tested-by: Mike Frysinger <vapier@google.com>
2022-08-22 20:48:02 +00:00

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#!/usr/bin/env python
# -*- coding:utf-8 -*-
#
# Copyright (C) 2008 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Repo launcher.
This is a standalone tool that people may copy to anywhere in their system.
It is used to get an initial repo client checkout, and after that it runs the
copy of repo in the checkout.
"""
from __future__ import print_function
import datetime
import os
import platform
import shlex
import subprocess
import sys
# These should never be newer than the main.py version since this needs to be a
# bit more flexible with older systems. See that file for more details on the
# versions we select.
MIN_PYTHON_VERSION_SOFT = (3, 6)
MIN_PYTHON_VERSION_HARD = (3, 5)
# Keep basic logic in sync with repo_trace.py.
class Trace(object):
"""Trace helper logic."""
REPO_TRACE = 'REPO_TRACE'
def __init__(self):
self.set(os.environ.get(self.REPO_TRACE) == '1')
def set(self, value):
self.enabled = bool(value)
def print(self, *args, **kwargs):
if self.enabled:
print(*args, **kwargs)
trace = Trace()
def exec_command(cmd):
"""Execute |cmd| or return None on failure."""
trace.print(':', ' '.join(cmd))
try:
if platform.system() == 'Windows':
ret = subprocess.call(cmd)
sys.exit(ret)
else:
os.execvp(cmd[0], cmd)
except Exception:
pass
def check_python_version():
"""Make sure the active Python version is recent enough."""
def reexec(prog):
exec_command([prog] + sys.argv)
ver = sys.version_info
major = ver.major
minor = ver.minor
# Abort on very old Python 2 versions.
if (major, minor) < (2, 7):
print('repo: error: Your Python version is too old. '
'Please use Python {}.{} or newer instead.'.format(
*MIN_PYTHON_VERSION_SOFT), file=sys.stderr)
sys.exit(1)
# Try to re-exec the version specific Python 3 if needed.
if (major, minor) < MIN_PYTHON_VERSION_SOFT:
# Python makes releases ~once a year, so try our min version +10 to help
# bridge the gap. This is the fallback anyways so perf isn't critical.
min_major, min_minor = MIN_PYTHON_VERSION_SOFT
for inc in range(0, 10):
reexec('python{}.{}'.format(min_major, min_minor + inc))
# Fallback to older versions if possible.
for inc in range(MIN_PYTHON_VERSION_SOFT[1] - MIN_PYTHON_VERSION_HARD[1], 0, -1):
# Don't downgrade, and don't reexec ourselves (which would infinite loop).
if (min_major, min_minor - inc) <= (major, minor):
break
reexec('python{}.{}'.format(min_major, min_minor - inc))
# Try the generic Python 3 wrapper, but only if it's new enough. If it
# isn't, we want to just give up below and make the user resolve things.
try:
proc = subprocess.Popen(
['python3', '-c', 'import sys; '
'print(sys.version_info.major, sys.version_info.minor)'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, _) = proc.communicate()
python3_ver = tuple(int(x) for x in output.decode('utf-8').split())
except (OSError, subprocess.CalledProcessError):
python3_ver = None
# If the python3 version looks like it's new enough, give it a try.
if (python3_ver and python3_ver >= MIN_PYTHON_VERSION_HARD
and python3_ver != (major, minor)):
reexec('python3')
# We're still here, so diagnose things for the user.
if major < 3:
print('repo: error: Python 2 is no longer supported; '
'Please upgrade to Python {}.{}+.'.format(*MIN_PYTHON_VERSION_HARD),
file=sys.stderr)
sys.exit(1)
elif (major, minor) < MIN_PYTHON_VERSION_HARD:
print('repo: error: Python 3 version is too old; '
'Please use Python {}.{} or newer.'.format(*MIN_PYTHON_VERSION_HARD),
file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
check_python_version()
# repo default configuration
#
REPO_URL = os.environ.get('REPO_URL', None)
if not REPO_URL:
REPO_URL = 'https://gerrit.googlesource.com/git-repo'
REPO_REV = os.environ.get('REPO_REV')
if not REPO_REV:
REPO_REV = 'stable'
# URL to file bug reports for repo tool issues.
BUG_URL = 'https://bugs.chromium.org/p/gerrit/issues/entry?template=Repo+tool+issue'
# increment this whenever we make important changes to this script
VERSION = (2, 29)
# increment this if the MAINTAINER_KEYS block is modified
KEYRING_VERSION = (2, 3)
# Each individual key entry is created by using:
# gpg --armor --export keyid
MAINTAINER_KEYS = """
Repo Maintainer <repo@android.kernel.org>
-----BEGIN PGP PUBLIC KEY BLOCK-----
mQGiBEj3ugERBACrLJh/ZPyVSKeClMuznFIrsQ+hpNnmJGw1a9GXKYKk8qHPhAZf
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=82Tj
-----END PGP PUBLIC KEY BLOCK-----
"""
GIT = 'git' # our git command
# NB: The version of git that the repo launcher requires may be much older than
# the version of git that the main repo source tree requires. Keeping this at
# an older version also makes it easier for users to upgrade/rollback as needed.
#
# git-1.7 is in (EOL) Ubuntu Precise.
MIN_GIT_VERSION = (1, 7, 2) # minimum supported git version
repodir = '.repo' # name of repo's private directory
S_repo = 'repo' # special repo repository
S_manifests = 'manifests' # special manifest repository
REPO_MAIN = S_repo + '/main.py' # main script
GITC_CONFIG_FILE = '/gitc/.config'
GITC_FS_ROOT_DIR = '/gitc/manifest-rw/'
import collections
import errno
import json
import optparse
import re
import shutil
import stat
if sys.version_info[0] == 3:
import urllib.request
import urllib.error
else:
import imp
import urllib2
urllib = imp.new_module('urllib')
urllib.request = urllib2
urllib.error = urllib2
home_dot_repo = os.path.expanduser('~/.repoconfig')
gpg_dir = os.path.join(home_dot_repo, 'gnupg')
def GetParser(gitc_init=False):
"""Setup the CLI parser."""
if gitc_init:
usage = 'repo gitc-init -c client [options] [-u] url'
else:
usage = 'repo init [options] [-u] url'
parser = optparse.OptionParser(usage=usage)
InitParser(parser, gitc_init=gitc_init)
return parser
def InitParser(parser, gitc_init=False):
"""Setup the CLI parser."""
# NB: Keep in sync with command.py:_CommonOptions().
# Logging.
group = parser.add_option_group('Logging options')
group.add_option('-v', '--verbose',
dest='output_mode', action='store_true',
help='show all output')
group.add_option('-q', '--quiet',
dest='output_mode', action='store_false',
help='only show errors')
# Manifest.
group = parser.add_option_group('Manifest options')
group.add_option('-u', '--manifest-url',
help='manifest repository location', metavar='URL')
group.add_option('-b', '--manifest-branch', metavar='REVISION',
help='manifest branch or revision (use HEAD for default)')
group.add_option('-m', '--manifest-name', default='default.xml',
help='initial manifest file', metavar='NAME.xml')
group.add_option('-g', '--groups', default='default',
help='restrict manifest projects to ones with specified '
'group(s) [default|all|G1,G2,G3|G4,-G5,-G6]',
metavar='GROUP')
group.add_option('-p', '--platform', default='auto',
help='restrict manifest projects to ones with a specified '
'platform group [auto|all|none|linux|darwin|...]',
metavar='PLATFORM')
group.add_option('--submodules', action='store_true',
help='sync any submodules associated with the manifest repo')
group.add_option('--standalone-manifest', action='store_true',
help='download the manifest as a static file '
'rather then create a git checkout of '
'the manifest repo')
group.add_option('--manifest-depth', type='int', default=1, metavar='DEPTH',
help='create a shallow clone of the manifest repo with '
'given depth; see git clone (default: %default)')
# Options that only affect manifest project, and not any of the projects
# specified in the manifest itself.
group = parser.add_option_group('Manifest (only) checkout options')
cbr_opts = ['--current-branch']
# The gitc-init subcommand allocates -c itself, but a lot of init users
# want -c, so try to satisfy both as best we can.
if not gitc_init:
cbr_opts += ['-c']
group.add_option(*cbr_opts, default=True,
dest='current_branch_only', action='store_true',
help='fetch only current manifest branch from server (default)')
group.add_option('--no-current-branch',
dest='current_branch_only', action='store_false',
help='fetch all manifest branches from server')
group.add_option('--tags',
action='store_true',
help='fetch tags in the manifest')
group.add_option('--no-tags',
dest='tags', action='store_false',
help="don't fetch tags in the manifest")
# These are fundamentally different ways of structuring the checkout.
group = parser.add_option_group('Checkout modes')
group.add_option('--mirror', action='store_true',
help='create a replica of the remote repositories '
'rather than a client working directory')
group.add_option('--archive', action='store_true',
help='checkout an archive instead of a git repository for '
'each project. See git archive.')
group.add_option('--worktree', action='store_true',
help='use git-worktree to manage projects')
# These are fundamentally different ways of structuring the checkout.
group = parser.add_option_group('Project checkout optimizations')
group.add_option('--reference',
help='location of mirror directory', metavar='DIR')
group.add_option('--dissociate', action='store_true',
help='dissociate from reference mirrors after clone')
group.add_option('--depth', type='int', default=None,
help='create a shallow clone with given depth; '
'see git clone')
group.add_option('--partial-clone', action='store_true',
help='perform partial clone (https://git-scm.com/'
'docs/gitrepository-layout#_code_partialclone_code)')
group.add_option('--no-partial-clone', action='store_false',
help='disable use of partial clone (https://git-scm.com/'
'docs/gitrepository-layout#_code_partialclone_code)')
group.add_option('--partial-clone-exclude', action='store',
help='exclude the specified projects (a comma-delimited '
'project names) from partial clone (https://git-scm.com'
'/docs/gitrepository-layout#_code_partialclone_code)')
group.add_option('--clone-filter', action='store', default='blob:none',
help='filter for use with --partial-clone '
'[default: %default]')
group.add_option('--use-superproject', action='store_true', default=None,
help='use the manifest superproject to sync projects; implies -c')
group.add_option('--no-use-superproject', action='store_false',
dest='use_superproject',
help='disable use of manifest superprojects')
group.add_option('--clone-bundle', action='store_true',
help='enable use of /clone.bundle on HTTP/HTTPS '
'(default if not --partial-clone)')
group.add_option('--no-clone-bundle',
dest='clone_bundle', action='store_false',
help='disable use of /clone.bundle on HTTP/HTTPS (default if --partial-clone)')
group.add_option('--git-lfs', action='store_true',
help='enable Git LFS support')
group.add_option('--no-git-lfs',
dest='git_lfs', action='store_false',
help='disable Git LFS support')
# Tool.
group = parser.add_option_group('repo Version options')
group.add_option('--repo-url', metavar='URL',
help='repo repository location ($REPO_URL)')
group.add_option('--repo-rev', metavar='REV',
help='repo branch or revision ($REPO_REV)')
group.add_option('--repo-branch', dest='repo_rev',
help=optparse.SUPPRESS_HELP)
group.add_option('--no-repo-verify',
dest='repo_verify', default=True, action='store_false',
help='do not verify repo source code')
# Other.
group = parser.add_option_group('Other options')
group.add_option('--config-name',
action='store_true', default=False,
help='Always prompt for name/e-mail')
# gitc-init specific settings.
if gitc_init:
group = parser.add_option_group('GITC options')
group.add_option('-f', '--manifest-file',
help='Optional manifest file to use for this GITC client.')
group.add_option('-c', '--gitc-client',
help='Name of the gitc_client instance to create or modify.')
return parser
# This is a poor replacement for subprocess.run until we require Python 3.6+.
RunResult = collections.namedtuple(
'RunResult', ('returncode', 'stdout', 'stderr'))
class RunError(Exception):
"""Error when running a command failed."""
def run_command(cmd, **kwargs):
"""Run |cmd| and return its output."""
check = kwargs.pop('check', False)
if kwargs.pop('capture_output', False):
kwargs.setdefault('stdout', subprocess.PIPE)
kwargs.setdefault('stderr', subprocess.PIPE)
cmd_input = kwargs.pop('input', None)
def decode(output):
"""Decode |output| to text."""
if output is None:
return output
try:
return output.decode('utf-8')
except UnicodeError:
print('repo: warning: Invalid UTF-8 output:\ncmd: %r\n%r' % (cmd, output),
file=sys.stderr)
# TODO(vapier): Once we require Python 3, use 'backslashreplace'.
return output.decode('utf-8', 'replace')
# Run & package the results.
proc = subprocess.Popen(cmd, **kwargs)
(stdout, stderr) = proc.communicate(input=cmd_input)
dbg = ': ' + ' '.join(cmd)
if cmd_input is not None:
dbg += ' 0<|'
if stdout == subprocess.PIPE:
dbg += ' 1>|'
if stderr == subprocess.PIPE:
dbg += ' 2>|'
elif stderr == subprocess.STDOUT:
dbg += ' 2>&1'
trace.print(dbg)
ret = RunResult(proc.returncode, decode(stdout), decode(stderr))
# If things failed, print useful debugging output.
if check and ret.returncode:
print('repo: error: "%s" failed with exit status %s' %
(cmd[0], ret.returncode), file=sys.stderr)
print(' cwd: %s\n cmd: %r' %
(kwargs.get('cwd', os.getcwd()), cmd), file=sys.stderr)
def _print_output(name, output):
if output:
print(' %s:\n >> %s' % (name, '\n >> '.join(output.splitlines())),
file=sys.stderr)
_print_output('stdout', ret.stdout)
_print_output('stderr', ret.stderr)
raise RunError(ret)
return ret
_gitc_manifest_dir = None
def get_gitc_manifest_dir():
global _gitc_manifest_dir
if _gitc_manifest_dir is None:
_gitc_manifest_dir = ''
try:
with open(GITC_CONFIG_FILE, 'r') as gitc_config:
for line in gitc_config:
match = re.match('gitc_dir=(?P<gitc_manifest_dir>.*)', line)
if match:
_gitc_manifest_dir = match.group('gitc_manifest_dir')
except IOError:
pass
return _gitc_manifest_dir
def gitc_parse_clientdir(gitc_fs_path):
"""Parse a path in the GITC FS and return its client name.
Args:
gitc_fs_path: A subdirectory path within the GITC_FS_ROOT_DIR.
Returns:
The GITC client name.
"""
if gitc_fs_path == GITC_FS_ROOT_DIR:
return None
if not gitc_fs_path.startswith(GITC_FS_ROOT_DIR):
manifest_dir = get_gitc_manifest_dir()
if manifest_dir == '':
return None
if manifest_dir[-1] != '/':
manifest_dir += '/'
if gitc_fs_path == manifest_dir:
return None
if not gitc_fs_path.startswith(manifest_dir):
return None
return gitc_fs_path.split(manifest_dir)[1].split('/')[0]
return gitc_fs_path.split(GITC_FS_ROOT_DIR)[1].split('/')[0]
class CloneFailure(Exception):
"""Indicate the remote clone of repo itself failed.
"""
def check_repo_verify(repo_verify, quiet=False):
"""Check the --repo-verify state."""
if not repo_verify:
print('repo: warning: verification of repo code has been disabled;\n'
'repo will not be able to verify the integrity of itself.\n',
file=sys.stderr)
return False
if NeedSetupGnuPG():
return SetupGnuPG(quiet)
return True
def check_repo_rev(dst, rev, repo_verify=True, quiet=False):
"""Check that |rev| is valid."""
do_verify = check_repo_verify(repo_verify, quiet=quiet)
remote_ref, local_rev = resolve_repo_rev(dst, rev)
if not quiet and not remote_ref.startswith('refs/heads/'):
print('warning: repo is not tracking a remote branch, so it will not '
'receive updates', file=sys.stderr)
if do_verify:
rev = verify_rev(dst, remote_ref, local_rev, quiet)
else:
rev = local_rev
return (remote_ref, rev)
def _Init(args, gitc_init=False):
"""Installs repo by cloning it over the network.
"""
parser = GetParser(gitc_init=gitc_init)
opt, args = parser.parse_args(args)
if args:
if not opt.manifest_url:
opt.manifest_url = args.pop(0)
if args:
parser.print_usage()
sys.exit(1)
opt.quiet = opt.output_mode is False
opt.verbose = opt.output_mode is True
if opt.clone_bundle is None:
opt.clone_bundle = False if opt.partial_clone else True
url = opt.repo_url or REPO_URL
rev = opt.repo_rev or REPO_REV
try:
if gitc_init:
gitc_manifest_dir = get_gitc_manifest_dir()
if not gitc_manifest_dir:
print('fatal: GITC filesystem is not available. Exiting...',
file=sys.stderr)
sys.exit(1)
gitc_client = opt.gitc_client
if not gitc_client:
gitc_client = gitc_parse_clientdir(os.getcwd())
if not gitc_client:
print('fatal: GITC client (-c) is required.', file=sys.stderr)
sys.exit(1)
client_dir = os.path.join(gitc_manifest_dir, gitc_client)
if not os.path.exists(client_dir):
os.makedirs(client_dir)
os.chdir(client_dir)
if os.path.exists(repodir):
# This GITC Client has already initialized repo so continue.
return
os.mkdir(repodir)
except OSError as e:
if e.errno != errno.EEXIST:
print('fatal: cannot make %s directory: %s'
% (repodir, e.strerror), file=sys.stderr)
# Don't raise CloneFailure; that would delete the
# name. Instead exit immediately.
#
sys.exit(1)
_CheckGitVersion()
try:
if not opt.quiet:
print('Downloading Repo source from', url)
dst_final = os.path.abspath(os.path.join(repodir, S_repo))
dst = dst_final + '.tmp'
shutil.rmtree(dst, ignore_errors=True)
_Clone(url, dst, opt.clone_bundle, opt.quiet, opt.verbose)
remote_ref, rev = check_repo_rev(dst, rev, opt.repo_verify, quiet=opt.quiet)
_Checkout(dst, remote_ref, rev, opt.quiet)
if not os.path.isfile(os.path.join(dst, 'repo')):
print("fatal: '%s' does not look like a git-repo repository, is "
"--repo-url set correctly?" % url, file=sys.stderr)
raise CloneFailure()
os.rename(dst, dst_final)
except CloneFailure:
print('fatal: double check your --repo-rev setting.', file=sys.stderr)
if opt.quiet:
print('fatal: repo init failed; run without --quiet to see why',
file=sys.stderr)
raise
def run_git(*args, **kwargs):
"""Run git and return execution details."""
kwargs.setdefault('capture_output', True)
kwargs.setdefault('check', True)
try:
return run_command([GIT] + list(args), **kwargs)
except OSError as e:
print(file=sys.stderr)
print('repo: error: "%s" is not available' % GIT, file=sys.stderr)
print('repo: error: %s' % e, file=sys.stderr)
print(file=sys.stderr)
print('Please make sure %s is installed and in your path.' % GIT,
file=sys.stderr)
sys.exit(1)
except RunError:
raise CloneFailure()
# The git version info broken down into components for easy analysis.
# Similar to Python's sys.version_info.
GitVersion = collections.namedtuple(
'GitVersion', ('major', 'minor', 'micro', 'full'))
def ParseGitVersion(ver_str=None):
if ver_str is None:
# Load the version ourselves.
ver_str = run_git('--version').stdout
if not ver_str.startswith('git version '):
return None
full_version = ver_str[len('git version '):].strip()
num_ver_str = full_version.split('-')[0]
to_tuple = []
for num_str in num_ver_str.split('.')[:3]:
if num_str.isdigit():
to_tuple.append(int(num_str))
else:
to_tuple.append(0)
to_tuple.append(full_version)
return GitVersion(*to_tuple)
def _CheckGitVersion():
ver_act = ParseGitVersion()
if ver_act is None:
print('fatal: unable to detect git version', file=sys.stderr)
raise CloneFailure()
if ver_act < MIN_GIT_VERSION:
need = '.'.join(map(str, MIN_GIT_VERSION))
print('fatal: git %s or later required; found %s' % (need, ver_act.full),
file=sys.stderr)
raise CloneFailure()
def SetGitTrace2ParentSid(env=None):
"""Set up GIT_TRACE2_PARENT_SID for git tracing."""
# We roughly follow the format git itself uses in trace2/tr2_sid.c.
# (1) Be unique (2) be valid filename (3) be fixed length.
#
# Since we always export this variable, we try to avoid more expensive calls.
# e.g. We don't attempt hostname lookups or hashing the results.
if env is None:
env = os.environ
KEY = 'GIT_TRACE2_PARENT_SID'
now = datetime.datetime.utcnow()
value = 'repo-%s-P%08x' % (now.strftime('%Y%m%dT%H%M%SZ'), os.getpid())
# If it's already set, then append ourselves.
if KEY in env:
value = env[KEY] + '/' + value
_setenv(KEY, value, env=env)
def _setenv(key, value, env=None):
"""Set |key| in the OS environment |env| to |value|."""
if env is None:
env = os.environ
# Environment handling across systems is messy.
try:
env[key] = value
except UnicodeEncodeError:
env[key] = value.encode()
def NeedSetupGnuPG():
if not os.path.isdir(home_dot_repo):
return True
kv = os.path.join(home_dot_repo, 'keyring-version')
if not os.path.exists(kv):
return True
kv = open(kv).read()
if not kv:
return True
kv = tuple(map(int, kv.split('.')))
if kv < KEYRING_VERSION:
return True
return False
def SetupGnuPG(quiet):
try:
os.mkdir(home_dot_repo)
except OSError as e:
if e.errno != errno.EEXIST:
print('fatal: cannot make %s directory: %s'
% (home_dot_repo, e.strerror), file=sys.stderr)
sys.exit(1)
try:
os.mkdir(gpg_dir, stat.S_IRWXU)
except OSError as e:
if e.errno != errno.EEXIST:
print('fatal: cannot make %s directory: %s' % (gpg_dir, e.strerror),
file=sys.stderr)
sys.exit(1)
if not quiet:
print('repo: Updating release signing keys to keyset ver %s' %
('.'.join(str(x) for x in KEYRING_VERSION),))
# NB: We use --homedir (and cwd below) because some environments (Windows) do
# not correctly handle full native paths. We avoid the issue by changing to
# the right dir with cwd=gpg_dir before executing gpg, and then telling gpg to
# use the cwd (.) as its homedir which leaves the path resolution logic to it.
cmd = ['gpg', '--homedir', '.', '--import']
try:
# gpg can be pretty chatty. Always capture the output and if something goes
# wrong, the builtin check failure will dump stdout & stderr for debugging.
run_command(cmd, stdin=subprocess.PIPE, capture_output=True,
cwd=gpg_dir, check=True,
input=MAINTAINER_KEYS.encode('utf-8'))
except OSError:
if not quiet:
print('warning: gpg (GnuPG) is not available.', file=sys.stderr)
print('warning: Installing it is strongly encouraged.', file=sys.stderr)
print(file=sys.stderr)
return False
with open(os.path.join(home_dot_repo, 'keyring-version'), 'w') as fd:
fd.write('.'.join(map(str, KEYRING_VERSION)) + '\n')
return True
def _SetConfig(cwd, name, value):
"""Set a git configuration option to the specified value.
"""
run_git('config', name, value, cwd=cwd)
def _GetRepoConfig(name):
"""Read a repo configuration option."""
config = os.path.join(home_dot_repo, 'config')
if not os.path.exists(config):
return None
cmd = ['config', '--file', config, '--get', name]
ret = run_git(*cmd, check=False)
if ret.returncode == 0:
return ret.stdout
elif ret.returncode == 1:
return None
else:
print('repo: error: git %s failed:\n%s' % (' '.join(cmd), ret.stderr),
file=sys.stderr)
raise RunError()
def _InitHttp():
handlers = []
mgr = urllib.request.HTTPPasswordMgrWithDefaultRealm()
try:
import netrc
n = netrc.netrc()
for host in n.hosts:
p = n.hosts[host]
mgr.add_password(p[1], 'http://%s/' % host, p[0], p[2])
mgr.add_password(p[1], 'https://%s/' % host, p[0], p[2])
except Exception:
pass
handlers.append(urllib.request.HTTPBasicAuthHandler(mgr))
handlers.append(urllib.request.HTTPDigestAuthHandler(mgr))
if 'http_proxy' in os.environ:
url = os.environ['http_proxy']
handlers.append(urllib.request.ProxyHandler({'http': url, 'https': url}))
if 'REPO_CURL_VERBOSE' in os.environ:
handlers.append(urllib.request.HTTPHandler(debuglevel=1))
handlers.append(urllib.request.HTTPSHandler(debuglevel=1))
urllib.request.install_opener(urllib.request.build_opener(*handlers))
def _Fetch(url, cwd, src, quiet, verbose):
cmd = ['fetch']
if not verbose:
cmd.append('--quiet')
err = None
if not quiet and sys.stdout.isatty():
cmd.append('--progress')
elif not verbose:
err = subprocess.PIPE
cmd.append(src)
cmd.append('+refs/heads/*:refs/remotes/origin/*')
cmd.append('+refs/tags/*:refs/tags/*')
run_git(*cmd, stderr=err, capture_output=False, cwd=cwd)
def _DownloadBundle(url, cwd, quiet, verbose):
if not url.endswith('/'):
url += '/'
url += 'clone.bundle'
ret = run_git('config', '--get-regexp', 'url.*.insteadof', cwd=cwd,
check=False)
for line in ret.stdout.splitlines():
m = re.compile(r'^url\.(.*)\.insteadof (.*)$').match(line)
if m:
new_url = m.group(1)
old_url = m.group(2)
if url.startswith(old_url):
url = new_url + url[len(old_url):]
break
if not url.startswith('http:') and not url.startswith('https:'):
return False
dest = open(os.path.join(cwd, '.git', 'clone.bundle'), 'w+b')
try:
try:
r = urllib.request.urlopen(url)
except urllib.error.HTTPError as e:
if e.code not in [400, 401, 403, 404, 501]:
print('warning: Cannot get %s' % url, file=sys.stderr)
print('warning: HTTP error %s' % e.code, file=sys.stderr)
return False
except urllib.error.URLError as e:
print('fatal: Cannot get %s' % url, file=sys.stderr)
print('fatal: error %s' % e.reason, file=sys.stderr)
raise CloneFailure()
try:
if verbose:
print('Downloading clone bundle %s' % url, file=sys.stderr)
while True:
buf = r.read(8192)
if not buf:
return True
dest.write(buf)
finally:
r.close()
finally:
dest.close()
def _ImportBundle(cwd):
path = os.path.join(cwd, '.git', 'clone.bundle')
try:
_Fetch(cwd, cwd, path, True, False)
finally:
os.remove(path)
def _Clone(url, cwd, clone_bundle, quiet, verbose):
"""Clones a git repository to a new subdirectory of repodir
"""
if verbose:
print('Cloning git repository', url)
try:
os.mkdir(cwd)
except OSError as e:
print('fatal: cannot make %s directory: %s' % (cwd, e.strerror),
file=sys.stderr)
raise CloneFailure()
run_git('init', '--quiet', cwd=cwd)
_InitHttp()
_SetConfig(cwd, 'remote.origin.url', url)
_SetConfig(cwd,
'remote.origin.fetch',
'+refs/heads/*:refs/remotes/origin/*')
if clone_bundle and _DownloadBundle(url, cwd, quiet, verbose):
_ImportBundle(cwd)
_Fetch(url, cwd, 'origin', quiet, verbose)
def resolve_repo_rev(cwd, committish):
"""Figure out what REPO_REV represents.
We support:
* refs/heads/xxx: Branch.
* refs/tags/xxx: Tag.
* xxx: Branch or tag or commit.
Args:
cwd: The git checkout to run in.
committish: The REPO_REV argument to resolve.
Returns:
A tuple of (remote ref, commit) as makes sense for the committish.
For branches, this will look like ('refs/heads/stable', <revision>).
For tags, this will look like ('refs/tags/v1.0', <revision>).
For commits, this will be (<revision>, <revision>).
"""
def resolve(committish):
ret = run_git('rev-parse', '--verify', '%s^{commit}' % (committish,),
cwd=cwd, check=False)
return None if ret.returncode else ret.stdout.strip()
# An explicit branch.
if committish.startswith('refs/heads/'):
remote_ref = committish
committish = committish[len('refs/heads/'):]
rev = resolve('refs/remotes/origin/%s' % committish)
if rev is None:
print('repo: error: unknown branch "%s"' % (committish,),
file=sys.stderr)
raise CloneFailure()
return (remote_ref, rev)
# An explicit tag.
if committish.startswith('refs/tags/'):
remote_ref = committish
committish = committish[len('refs/tags/'):]
rev = resolve(remote_ref)
if rev is None:
print('repo: error: unknown tag "%s"' % (committish,),
file=sys.stderr)
raise CloneFailure()
return (remote_ref, rev)
# See if it's a short branch name.
rev = resolve('refs/remotes/origin/%s' % committish)
if rev:
return ('refs/heads/%s' % (committish,), rev)
# See if it's a tag.
rev = resolve('refs/tags/%s' % committish)
if rev:
return ('refs/tags/%s' % (committish,), rev)
# See if it's a commit.
rev = resolve(committish)
if rev and rev.lower().startswith(committish.lower()):
return (rev, rev)
# Give up!
print('repo: error: unable to resolve "%s"' % (committish,), file=sys.stderr)
raise CloneFailure()
def verify_rev(cwd, remote_ref, rev, quiet):
"""Verify the commit has been signed by a tag."""
ret = run_git('describe', rev, cwd=cwd)
cur = ret.stdout.strip()
m = re.compile(r'^(.*)-[0-9]{1,}-g[0-9a-f]{1,}$').match(cur)
if m:
cur = m.group(1)
if not quiet:
print(file=sys.stderr)
print("warning: '%s' is not signed; falling back to signed release '%s'"
% (remote_ref, cur), file=sys.stderr)
print(file=sys.stderr)
env = os.environ.copy()
_setenv('GNUPGHOME', gpg_dir, env)
run_git('tag', '-v', cur, cwd=cwd, env=env)
return '%s^0' % cur
def _Checkout(cwd, remote_ref, rev, quiet):
"""Checkout an upstream branch into the repository and track it.
"""
run_git('update-ref', 'refs/heads/default', rev, cwd=cwd)
_SetConfig(cwd, 'branch.default.remote', 'origin')
_SetConfig(cwd, 'branch.default.merge', remote_ref)
run_git('symbolic-ref', 'HEAD', 'refs/heads/default', cwd=cwd)
cmd = ['read-tree', '--reset', '-u']
if not quiet:
cmd.append('-v')
cmd.append('HEAD')
run_git(*cmd, cwd=cwd)
def _FindRepo():
"""Look for a repo installation, starting at the current directory.
"""
curdir = os.getcwd()
repo = None
olddir = None
while curdir != olddir and not repo:
repo = os.path.join(curdir, repodir, REPO_MAIN)
if not os.path.isfile(repo):
repo = None
olddir = curdir
curdir = os.path.dirname(curdir)
return (repo, os.path.join(curdir, repodir))
class _Options(object):
help = False
version = False
def _ExpandAlias(name):
"""Look up user registered aliases."""
# We don't resolve aliases for existing subcommands. This matches git.
if name in {'gitc-init', 'help', 'init'}:
return name, []
alias = _GetRepoConfig('alias.%s' % (name,))
if alias is None:
return name, []
args = alias.strip().split(' ', 1)
name = args[0]
if len(args) == 2:
args = shlex.split(args[1])
else:
args = []
return name, args
def _ParseArguments(args):
cmd = None
opt = _Options()
arg = []
for i in range(len(args)):
a = args[i]
if a == '-h' or a == '--help':
opt.help = True
elif a == '--version':
opt.version = True
elif a == '--trace':
trace.set(True)
elif not a.startswith('-'):
cmd = a
arg = args[i + 1:]
break
return cmd, opt, arg
class Requirements(object):
"""Helper for checking repo's system requirements."""
REQUIREMENTS_NAME = 'requirements.json'
def __init__(self, requirements):
"""Initialize.
Args:
requirements: A dictionary of settings.
"""
self.requirements = requirements
@classmethod
def from_dir(cls, path):
return cls.from_file(os.path.join(path, cls.REQUIREMENTS_NAME))
@classmethod
def from_file(cls, path):
try:
with open(path, 'rb') as f:
data = f.read()
except EnvironmentError:
# NB: EnvironmentError is used for Python 2 & 3 compatibility.
# If we couldn't open the file, assume it's an old source tree.
return None
return cls.from_data(data)
@classmethod
def from_data(cls, data):
comment_line = re.compile(br'^ *#')
strip_data = b''.join(x for x in data.splitlines() if not comment_line.match(x))
try:
json_data = json.loads(strip_data)
except Exception: # pylint: disable=broad-except
# If we couldn't parse it, assume it's incompatible.
return None
return cls(json_data)
def _get_soft_ver(self, pkg):
"""Return the soft version for |pkg| if it exists."""
return self.requirements.get(pkg, {}).get('soft', ())
def _get_hard_ver(self, pkg):
"""Return the hard version for |pkg| if it exists."""
return self.requirements.get(pkg, {}).get('hard', ())
@staticmethod
def _format_ver(ver):
"""Return a dotted version from |ver|."""
return '.'.join(str(x) for x in ver)
def assert_ver(self, pkg, curr_ver):
"""Verify |pkg|'s |curr_ver| is new enough."""
curr_ver = tuple(curr_ver)
soft_ver = tuple(self._get_soft_ver(pkg))
hard_ver = tuple(self._get_hard_ver(pkg))
if curr_ver < hard_ver:
print('repo: error: Your version of "%s" (%s) is unsupported; '
'Please upgrade to at least version %s to continue.' %
(pkg, self._format_ver(curr_ver), self._format_ver(soft_ver)),
file=sys.stderr)
sys.exit(1)
if curr_ver < soft_ver:
print('repo: warning: Your version of "%s" (%s) is no longer supported; '
'Please upgrade to at least version %s to avoid breakage.' %
(pkg, self._format_ver(curr_ver), self._format_ver(soft_ver)),
file=sys.stderr)
def assert_all(self):
"""Assert all of the requirements are satisified."""
# See if we need a repo launcher upgrade first.
self.assert_ver('repo', VERSION)
# Check python before we try to import the repo code.
self.assert_ver('python', sys.version_info)
# Check git while we're at it.
self.assert_ver('git', ParseGitVersion())
def _Usage():
gitc_usage = ""
if get_gitc_manifest_dir():
gitc_usage = " gitc-init Initialize a GITC Client.\n"
print(
"""usage: repo COMMAND [ARGS]
repo is not yet installed. Use "repo init" to install it here.
The most commonly used repo commands are:
init Install repo in the current working directory
""" + gitc_usage +
""" help Display detailed help on a command
For access to the full online help, install repo ("repo init").
""")
print('Bug reports:', BUG_URL)
sys.exit(0)
def _Help(args):
if args:
if args[0] in {'init', 'gitc-init'}:
parser = GetParser(gitc_init=args[0] == 'gitc-init')
parser.print_help()
sys.exit(0)
else:
print("error: '%s' is not a bootstrap command.\n"
' For access to online help, install repo ("repo init").'
% args[0], file=sys.stderr)
else:
_Usage()
sys.exit(1)
def _Version():
"""Show version information."""
print('<repo not installed>')
print('repo launcher version %s' % ('.'.join(str(x) for x in VERSION),))
print(' (from %s)' % (__file__,))
print('git %s' % (ParseGitVersion().full,))
print('Python %s' % sys.version)
uname = platform.uname()
if sys.version_info.major < 3:
# Python 3 returns a named tuple, but Python 2 is simpler.
print(uname)
else:
print('OS %s %s (%s)' % (uname.system, uname.release, uname.version))
print('CPU %s (%s)' %
(uname.machine, uname.processor if uname.processor else 'unknown'))
print('Bug reports:', BUG_URL)
sys.exit(0)
def _NotInstalled():
print('error: repo is not installed. Use "repo init" to install it here.',
file=sys.stderr)
sys.exit(1)
def _NoCommands(cmd):
print("""error: command '%s' requires repo to be installed first.
Use "repo init" to install it here.""" % cmd, file=sys.stderr)
sys.exit(1)
def _RunSelf(wrapper_path):
my_dir = os.path.dirname(wrapper_path)
my_main = os.path.join(my_dir, 'main.py')
my_git = os.path.join(my_dir, '.git')
if os.path.isfile(my_main) and os.path.isdir(my_git):
for name in ['git_config.py',
'project.py',
'subcmds']:
if not os.path.exists(os.path.join(my_dir, name)):
return None, None
return my_main, my_git
return None, None
def _SetDefaultsTo(gitdir):
global REPO_URL
global REPO_REV
REPO_URL = gitdir
ret = run_git('--git-dir=%s' % gitdir, 'symbolic-ref', 'HEAD', check=False)
if ret.returncode:
# If we're not tracking a branch (bisect/etc...), then fall back to commit.
print('repo: warning: %s has no current branch; using HEAD' % gitdir,
file=sys.stderr)
try:
ret = run_git('rev-parse', 'HEAD', cwd=gitdir)
except CloneFailure:
print('fatal: %s has invalid HEAD' % gitdir, file=sys.stderr)
sys.exit(1)
REPO_REV = ret.stdout.strip()
def main(orig_args):
cmd, opt, args = _ParseArguments(orig_args)
# We run this early as we run some git commands ourselves.
SetGitTrace2ParentSid()
repo_main, rel_repo_dir = None, None
# Don't use the local repo copy, make sure to switch to the gitc client first.
if cmd != 'gitc-init':
repo_main, rel_repo_dir = _FindRepo()
wrapper_path = os.path.abspath(__file__)
my_main, my_git = _RunSelf(wrapper_path)
cwd = os.getcwd()
if get_gitc_manifest_dir() and cwd.startswith(get_gitc_manifest_dir()):
print('error: repo cannot be used in the GITC local manifest directory.'
'\nIf you want to work on this GITC client please rerun this '
'command from the corresponding client under /gitc/',
file=sys.stderr)
sys.exit(1)
if not repo_main:
# Only expand aliases here since we'll be parsing the CLI ourselves.
# If we had repo_main, alias expansion would happen in main.py.
cmd, alias_args = _ExpandAlias(cmd)
args = alias_args + args
if opt.help:
_Usage()
if cmd == 'help':
_Help(args)
if opt.version or cmd == 'version':
_Version()
if not cmd:
_NotInstalled()
if cmd == 'init' or cmd == 'gitc-init':
if my_git:
_SetDefaultsTo(my_git)
try:
_Init(args, gitc_init=(cmd == 'gitc-init'))
except CloneFailure:
path = os.path.join(repodir, S_repo)
print("fatal: cloning the git-repo repository failed, will remove "
"'%s' " % path, file=sys.stderr)
shutil.rmtree(path, ignore_errors=True)
shutil.rmtree(path + '.tmp', ignore_errors=True)
sys.exit(1)
repo_main, rel_repo_dir = _FindRepo()
else:
_NoCommands(cmd)
if my_main:
repo_main = my_main
if not repo_main:
print("fatal: unable to find repo entry point", file=sys.stderr)
sys.exit(1)
reqs = Requirements.from_dir(os.path.dirname(repo_main))
if reqs:
reqs.assert_all()
ver_str = '.'.join(map(str, VERSION))
me = [sys.executable, repo_main,
'--repo-dir=%s' % rel_repo_dir,
'--wrapper-version=%s' % ver_str,
'--wrapper-path=%s' % wrapper_path,
'--']
me.extend(orig_args)
exec_command(me)
print("fatal: unable to start %s" % repo_main, file=sys.stderr)
sys.exit(148)
if __name__ == '__main__':
main(sys.argv[1:])
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