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#!/usr/bin/env python3
#
# Copyright 2019 Red Hat, Inc.
#
# Authors:
# Eduardo Habkost <ehabkost@redhat.com>
#
# This work is licensed under the MIT License. Please see the LICENSE file or
# http://opensource.org/licenses/MIT.
"""
fake_git - fake git command that should be used by git-publish
when running test cases
The following environment variables must be set:
- $REAL_GIT - path to real git binary
- $FAKE_GIT_LOG - path to human-readable debugging log
- $FAKE_GIT_COMMAND_LOG - path to machine-readable command log
"""
import sys
import os
import logging
import shlex
logger = logging.getLogger('fakegit')
dbg = logger.debug
def escape_command(command):
return ' '.join(shlex.quote(a) for a in command)
def run_real_git(args):
global REAL_GIT
dbg("Running real git: %r", args)
os.execl(REAL_GIT, 'git', *args)
def run_send_email(args):
if '--dry-run' not in args:
logger.error("git send-email not run using --dry-run")
sys.exit(1)
run_real_git(args)
# harmless commands that can be always run:
# NOTE: git-config is only safe because the test runner overrides $HOME, so
# we will never touch the real ~/.gitconfig. See the 0000-gitconfig-home
# test case
PASSTHROUGH_COMMANDS = ['tag', 'rev-parse', 'symbolic-ref', 'format-patch',
'config', 'checkout', 'var', 'add', 'commit']
# special commands that require some validation:
SPECIAL_COMMANDS = {
'send-email': run_send_email,
}
if len(sys.argv) < 2:
sys.exit(1)
REAL_GIT = os.getenv("REAL_GIT")
if not REAL_GIT:
print("$REAL_GIT not set", file=sys.stderr)
sys.exit(1)
if not os.access(REAL_GIT, os.X_OK):
print("$REAL_GIT not executable", file=sys.stderr)
sys.exit(1)
# debugging log:
log_file = os.getenv("FAKE_GIT_LOG")
if not log_file:
print("$FAKE_GIT_LOG not set", file=sys.stderr)
sys.exit(1)
logging.basicConfig(filename=log_file, level=logging.DEBUG)
# warning and errors also go to stderr:
err_handler = logging.StreamHandler()
err_handler.setLevel(logging.WARN)
logging.getLogger('').addHandler(err_handler)
# command log:
command_log = os.getenv("FAKE_GIT_COMMAND_LOG")
if not command_log:
print("$FAKE_GIT_COMMAND_LOG not set", file=sys.stderr)
sys.exit(1)
args = sys.argv[1:]
logger.info("Command: %r", args)
with open(command_log, 'a') as f:
f.write('%s\n' % (escape_command(args)))
if args[0] in PASSTHROUGH_COMMANDS:
run_real_git(args)
elif args[0] in SPECIAL_COMMANDS:
SPECIAL_COMMANDS[args[0]](args)
else:
logger.error("command not allowed: %r", args)
sys.exit(1)
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