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#!/usr/bin/env python3
# bitbake-diffsigs
# BitBake task signature data comparison utility
#
# Copyright (C) 2012-2013, 2017 Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import sys
import warnings
import fnmatch
import argparse
import logging
import pickle
sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(sys.argv[0])), 'lib'))
import bb.tinfoil
import bb.siggen
import bb.msg
logger = bb.msg.logger_create('bitbake-diffsigs')
def find_compare_task(bbhandler, pn, taskname):
""" Find the most recent signature files for the specified PN/task and compare them """
if not hasattr(bb.siggen, 'find_siginfo'):
logger.error('Metadata does not support finding signature data files')
sys.exit(1)
if not taskname.startswith('do_'):
taskname = 'do_%s' % taskname
filedates = bb.siggen.find_siginfo(pn, taskname, None, bbhandler.config_data)
latestfiles = sorted(filedates.keys(), key=lambda f: filedates[f])[-3:]
if not latestfiles:
logger.error('No sigdata files found matching %s %s' % (pn, taskname))
sys.exit(1)
elif len(latestfiles) < 2:
logger.error('Only one matching sigdata file found for the specified task (%s %s)' % (pn, taskname))
sys.exit(1)
else:
# Define recursion callback
def recursecb(key, hash1, hash2):
hashes = [hash1, hash2]
hashfiles = bb.siggen.find_siginfo(key, None, hashes, bbhandler.config_data)
recout = []
if len(hashfiles) == 0:
recout.append("Unable to find matching sigdata for %s with hashes %s or %s" % (key, hash1, hash2))
elif not hash1 in hashfiles:
recout.append("Unable to find matching sigdata for %s with hash %s" % (key, hash1))
elif not hash2 in hashfiles:
recout.append("Unable to find matching sigdata for %s with hash %s" % (key, hash2))
else:
out2 = bb.siggen.compare_sigfiles(hashfiles[hash1], hashfiles[hash2], recursecb)
for change in out2:
for line in change.splitlines():
recout.append(' ' + line)
return recout
# Recurse into signature comparison
logger.debug("Signature file (previous): %s" % latestfiles[-2])
logger.debug("Signature file (latest): %s" % latestfiles[-1])
output = bb.siggen.compare_sigfiles(latestfiles[-2], latestfiles[-1], recursecb)
if output:
print('\n'.join(output))
sys.exit(0)
parser = argparse.ArgumentParser(
description="Compares siginfo/sigdata files written out by BitBake")
parser.add_argument('-d', '--debug',
help='Enable debug output',
action='store_true')
parser.add_argument("-t", "--task",
help="find the signature data files for last two runs of the specified task and compare them",
action="store", dest="taskargs", nargs=2, metavar=('recipename', 'taskname'))
parser.add_argument("sigdatafile1",
help="First signature file to compare (or signature file to dump, if second not specified). Not used when using -t/--task.",
action="store", nargs='?')
parser.add_argument("sigdatafile2",
help="Second signature file to compare",
action="store", nargs='?')
options = parser.parse_args()
if options.debug:
logger.setLevel(logging.DEBUG)
if options.taskargs:
with bb.tinfoil.Tinfoil() as tinfoil:
tinfoil.prepare(config_only=True)
find_compare_task(tinfoil, options.taskargs[0], options.taskargs[1])
else:
try:
if options.sigdatafile1 and options.sigdatafile2:
output = bb.siggen.compare_sigfiles(options.sigdatafile1, options.sigdatafile2)
elif options.sigdatafile1:
output = bb.siggen.dump_sigfile(options.sigdatafile1)
except IOError as e:
logger.error(str(e))
sys.exit(1)
except (pickle.UnpicklingError, EOFError):
logger.error('Invalid signature data - ensure you are specifying sigdata/siginfo files')
sys.exit(1)
if output:
print('\n'.join(output))
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