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0b088e0829
Starting from v2.1 passing passwords directly to gpg does not work anymore [1], instead a loopback interface must be used otherwise gpg >2.1 will error out with: "gpg: signing failed: Inappropriate ioctl for device" gpg <2.1 does not work with the new --pinentry-mode arg and gives an invalid option error, so we detect what is the running version of gpg and pass it accordingly. [1] https://wiki.archlinux.org/index.php/GnuPG#Unattended_passphrase (From OE-Core rev: 0413bd8e294ca8ac972ac68662b43a981952f5ae) Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu@ni.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
127 lines
4.5 KiB
Python
127 lines
4.5 KiB
Python
"""Helper module for GPG signing"""
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import os
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import bb
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import oe.utils
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class LocalSigner(object):
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"""Class for handling local (on the build host) signing"""
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def __init__(self, d):
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self.gpg_bin = d.getVar('GPG_BIN', True) or \
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bb.utils.which(os.getenv('PATH'), 'gpg')
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self.gpg_path = d.getVar('GPG_PATH', True)
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self.rpm_bin = bb.utils.which(os.getenv('PATH'), "rpm")
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def export_pubkey(self, output_file, keyid):
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"""Export GPG public key to a file"""
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cmd = '%s --batch --yes --export --armor -o %s ' % \
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(self.gpg_bin, output_file)
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if self.gpg_path:
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cmd += "--homedir %s " % self.gpg_path
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cmd += keyid
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status, output = oe.utils.getstatusoutput(cmd)
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if status:
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raise bb.build.FuncFailed('Failed to export gpg public key (%s): %s' %
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(keyid, output))
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def sign_rpms(self, files, keyid, passphrase_file):
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"""Sign RPM files"""
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import pexpect
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cmd = self.rpm_bin + " --addsign --define '_gpg_name %s' " % keyid
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if self.gpg_bin:
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cmd += "--define '%%__gpg %s' " % self.gpg_bin
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if self.gpg_path:
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cmd += "--define '_gpg_path %s' " % self.gpg_path
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cmd += ' '.join(files)
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# Need to use pexpect for feeding the passphrase
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proc = pexpect.spawn(cmd)
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try:
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proc.expect_exact('Enter pass phrase:', timeout=15)
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with open(passphrase_file) as fobj:
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proc.sendline(fobj.readline().rstrip('\n'))
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proc.expect(pexpect.EOF, timeout=900)
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proc.close()
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except pexpect.TIMEOUT as err:
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bb.error('rpmsign timeout: %s' % err)
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proc.terminate()
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if os.WEXITSTATUS(proc.status) or not os.WIFEXITED(proc.status):
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bb.error('rpmsign failed: %s' % proc.before.strip())
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raise bb.build.FuncFailed("Failed to sign RPM packages")
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def detach_sign(self, input_file, keyid, passphrase_file, passphrase=None, armor=True):
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"""Create a detached signature of a file"""
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import subprocess
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if passphrase_file and passphrase:
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raise Exception("You should use either passphrase_file of passphrase, not both")
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cmd = [self.gpg_bin, '--detach-sign', '--batch', '--no-tty', '--yes',
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'--passphrase-fd', '0', '-u', keyid]
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if self.gpg_path:
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cmd += ['--homedir', self.gpg_path]
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if armor:
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cmd += ['--armor']
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#gpg > 2.1 supports password pipes only through the loopback interface
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#gpg < 2.1 errors out if given unknown parameters
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dots = self.get_gpg_version().split('.')
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assert len(dots) >= 2
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if int(dots[0]) >= 2 and int(dots[1]) >= 1:
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cmd += ['--pinentry-mode', 'loopback']
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cmd += [input_file]
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try:
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if passphrase_file:
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with open(passphrase_file) as fobj:
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passphrase = fobj.readline();
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job = subprocess.Popen(cmd, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
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(_, stderr) = job.communicate(passphrase)
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if job.returncode:
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raise bb.build.FuncFailed("GPG exited with code %d: %s" %
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(job.returncode, stderr))
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except IOError as e:
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bb.error("IO error (%s): %s" % (e.errno, e.strerror))
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raise Exception("Failed to sign '%s'" % input_file)
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except OSError as e:
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bb.error("OS error (%s): %s" % (e.errno, e.strerror))
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raise Exception("Failed to sign '%s" % input_file)
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def get_gpg_version(self):
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"""Return the gpg version"""
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import subprocess
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try:
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return subprocess.check_output((self.gpg_bin, "--version")).split()[2]
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except subprocess.CalledProcessError as e:
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raise bb.build.FuncFailed("Could not get gpg version: %s" % e)
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def verify(self, sig_file):
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"""Verify signature"""
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cmd = self.gpg_bin + " --verify "
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if self.gpg_path:
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cmd += "--homedir %s " % self.gpg_path
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cmd += sig_file
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status, _ = oe.utils.getstatusoutput(cmd)
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ret = False if status else True
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return ret
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def get_signer(d, backend):
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"""Get signer object for the specified backend"""
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# Use local signing by default
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if backend == 'local':
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return LocalSigner(d)
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else:
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bb.fatal("Unsupported signing backend '%s'" % backend)
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