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ubuntu-dev-tools/pbuilder-dist

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#! /usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2007-2010 Siegfried-A. Gevatter <rainct@ubuntu.com>
# With some changes by Iain Lane <iain@orangesquash.org.uk>,
# Stefano Rivera <stefanor@ubuntu.com>
# Based upon pbuilder-dist-simple by Jamin Collins and Jordan Mantha.
#
# ##################################################################
#
# 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 2
# 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.
#
# See file /usr/share/common-licenses/GPL-2 for more details.
#
# ##################################################################
#
# This script is a wrapper to be able to easily use pbuilder/cowbuilder for
# different distributions (eg, Gutsy, Hardy, Debian unstable, etc).
#
# You can create symlinks to a pbuilder-dist executable to get different
# configurations. For example, a symlink called pbuilder-hardy will assume
# that the target distribution is always meant to be Ubuntu Hardy.
import os
import subprocess
from sys import exit, argv, stderr
import ubuntutools.misc
debian_distros = ['etch', 'lenny', 'squeeze', 'sid', 'stable', 'testing',
'unstable', 'experimental']
class pbuilder_dist:
def __init__(self, builder):
# Base directory where pbuilder will put all the files it creates.
self.base = None
# Name of the operation which pbuilder should perform.
self.operation = None
# Wheter additional components should be used or not. That is,
# 'universe' and 'multiverse' for Ubuntu chroots and 'contrib'
# and 'non-free' for Debian.
self.extra_components = True
# File where the log of the last operation will be saved.
self.logfile = None
# System architecture
self.system_architecture = None
# Build architecture
self.build_architecture = None
# System's distribution
self.system_distro = None
# Target distribution
self.target_distro = None
# This is an identificative string which will either take the form
# 'distribution' or 'distribution-architecture'.
self.chroot_string = None
# Authentication method
self.auth = 'sudo'
# Builder
self.builder = builder
# Ensure that the used builder is installed
paths = set(os.environ['PATH'].split(':'))
paths |= set(('/sbin', '/usr/sbin', '/usr/local/sbin'))
if not any(os.path.exists(os.path.join(p, builder)) for p in paths):
print >> stderr, 'Error: Could not find "%s".' % builder
exit(1)
##############################################################
self.base = os.path.expanduser(os.environ.get('PBUILDFOLDER',
'~/pbuilder/'))
if not os.path.isdir(self.base):
try:
os.makedirs(self.base)
except os.OSError:
print >> stderr, ('Error: Cannot create base directory "%s"'
% self.base)
exit(1)
if 'PBUILDAUTH' in os.environ:
self.auth = os.environ['PBUILDAUTH']
self.system_architecture = ubuntutools.misc.host_architecture()
self.system_distro = ubuntutools.misc.system_distribution()
if not self.system_architecture or not self.system_distro:
exit(1)
self.target_distro = self.system_distro
def set_target_distro(self, distro):
""" pbuilder_dist.set_target_distro(distro) -> None
Check if the given target distribution name is correct, if it
isn't know to the system ask the user for confirmation before
proceeding, and finally either save the value into the appropiate
variable or finalize pbuilder-dist's execution.
"""
if not distro.isalpha():
print >> stderr, ('Error: "%s" is an invalid distribution codename.'
% distro)
exit(1)
if not os.path.isfile(os.path.join('/usr/share/debootstrap/scripts/',
distro)):
if os.path.isdir('/usr/share/debootstrap/scripts/'):
# Debian experimental doesn't have a debootstrap file but
# should work nevertheless.
if distro not in debian_distros:
answer = ask(('Warning: Unknown distribution "%s". Do you '
'want to continue [y/N]? ') % distro)
if answer not in ('y', 'Y'):
exit(0)
else:
print >> stderr, 'Please install package "debootstrap".'
exit(1)
self.target_distro = distro
def set_operation(self, operation):
""" pbuilder_dist.set_operation -> None
Check if the given string is a valid pbuilder operation and
depending on this either save it into the appropiate variable
or finalize pbuilder-dist's execution.
"""
arguments = ('create', 'update', 'build', 'clean', 'login', 'execute')
if operation not in arguments:
if operation.endswith('.dsc'):
if os.path.isfile(operation):
self.operation = 'build'
return [operation]
else:
print >> stderr, ('Error: Could not find file "%s".'
% operation)
exit(1)
else:
print >> stderr, (
'Error: "%s" is not a recognized argument.\n'
'Please use one of these: %s.'
) % (operation, ', '.join(arguments))
exit(1)
else:
self.operation = operation
return []
def get_command(self, remaining_arguments = None):
""" pbuilder_dist.get_command -> string
Generate the pbuilder command which matches the given configuration
and return it as a string.
"""
if not self.build_architecture:
self.chroot_string = self.target_distro
self.build_architecture = self.system_architecture
else:
self.chroot_string = (self.target_distro + '-'
+ self.build_architecture)
prefix = os.path.join(self.base, self.chroot_string)
result = '%s_result/' % prefix
if not self.logfile and self.operation != 'login':
self.logfile = os.path.normpath('%s/last_operation.log' % result)
if not os.path.isdir(result):
try:
os.makedirs(result)
except os.OSError:
print >> stderr, ('Error: Cannot create results directory "%s"'
% result)
exit(1)
arguments = [
'--%s' % self.operation,
'--distribution', self.target_distro,
'--buildresult', result,
'--aptcache', '/var/cache/apt/archives/',
'--override-config',
]
if self.builder == 'pbuilder':
arguments += ['--basetgz', prefix + '-base.tgz']
elif self.builder == 'cowbuilder':
arguments += ['--basepath', prefix + '-base.cow']
else:
print >> stderr, 'Error: Unrecognized builder "%s".' % self.builder
exit(1)
if self.logfile:
arguments += ['--logfile', self.logfile]
if os.path.exists('/var/cache/archive/'):
arguments += ['--bindmounts', '/var/cache/archive/']
localrepo = '/var/cache/archive/' + self.target_distro
if os.path.exists(localrepo):
arguments += [
'--othermirror ',
'deb file:///var/cache/archive/ %s/' % self.target_distro,
]
if self.target_distro in debian_distros:
arguments += ['--mirror', 'http://ftp.debian.org/debian']
components = 'main'
if self.extra_components:
components += ' contrib non-free'
else:
if self.build_architecture in ('amd64', 'i386'):
arguments += ['--mirror', 'http://archive.ubuntu.com/ubuntu/']
elif (self.build_architecture == 'powerpc'
and self.target_distro == 'dapper'):
arguments += ['--mirror', 'http://archive.ubuntu.com/ubuntu/']
else:
arguments += ['--mirror',
'http://ports.ubuntu.com/ubuntu-ports/']
components = 'main restricted'
if self.extra_components:
components += ' universe multiverse'
# Work around LP:#599695
if (ubuntutools.misc.system_distribution() == 'Debian'
and self.target_distro not in debian_distros):
if not os.path.exists(
'/usr/share/keyrings/ubuntu-archive-keyring.gpg'):
print >> stderr, 'Error: ubuntu-keyring not installed'
exit(1)
arguments += [
'--debootstrapopts',
'--keyring=/usr/share/keyrings/ubuntu-archive-keyring.gpg',
]
elif (ubuntutools.misc.system_distribution() == 'Ubuntu'
and self.target_distro in debian_distros):
if not os.path.exists(
'/usr/share/keyrings/debian-archive-keyring.gpg'):
print >> stderr, 'Error: debian-archive-keyring not installed'
exit(1)
arguments += [
'--debootstrapopts',
'--keyring=/usr/share/keyrings/debian-archive-keyring.gpg',
]
arguments += ['--components', components]
if self.build_architecture != self.system_architecture:
arguments += ['--debootstrapopts',
'--arch=' + self.build_architecture]
apt_conf_dir = os.path.join(self.base,
'etc/%s/apt.conf' % self.target_distro)
if os.path.exists(apt_conf_dir):
arguments += ['--aptconfdir', apt_conf_dir]
# Append remaining arguments
if remaining_arguments:
arguments.extend(remaining_arguments)
# Export the distribution and architecture information to the
# environment so that it is accessible to ~/.pbuilderrc (LP: #628933).
return [
self.auth,
'HOME=' + os.path.expanduser('~'),
'ARCH=' + self.build_architecture,
'DIST=' + self.target_distro,
self.builder,
] + arguments
def ask(question):
""" ask(question) -> string
Ask the given question and return the answer. Also catch
KeyboardInterrupt (Ctrl+C) and EOFError (Ctrl+D) exceptions and
immediately return None if one of those is found.
"""
try:
answer = raw_input(question)
except (KeyboardInterrupt, EOFError):
print
answer = None
return answer
def help(exit_code = 0):
""" help() -> None
Print a help message for pbuilder-dist, and exit with the given code.
"""
print 'See man pbuilder-dist for more information.'
exit(exit_code)
def main():
""" main() -> None
This is pbuilder-dist's main function. It creates a pbuilder_dist
object, modifies all necessary settings taking data from the
executable's name and command line options and finally either ends
the script and runs pbuilder itself or exists with an error message.
"""
script_name = os.path.basename(argv[0])
parts = script_name.split('-')
# Copy arguments into another list for save manipulation
args = argv[1:]
if ('-' in script_name and parts[0] not in ('pbuilder', 'cowbuilder')
or len(parts) > 3):
print >> stderr, ('Error: "%s" is not a valid name for a '
'"pbuilder-dist" executable.') % script_name
exit(1)
if len(args) < 1:
print >> stderr, 'Insufficient number of arguments.'
help(1)
if args[0] in ('-h', '--help', 'help'):
help(0)
app = pbuilder_dist(parts[0])
if len(parts) > 1 and parts[1] != 'dist' and '.' not in parts[1]:
app.set_target_distro(parts[1])
else:
app.set_target_distro(args.pop(0))
if len(parts) > 2:
requested_arch = parts[2]
elif len(args) > 0 and args[0] in (
'alpha', 'amd64', 'arm', 'armeb', 'armel', 'i386', 'lpia', 'm68k',
'mips', 'mipsel', 'powerpc', 'ppc64', 'sh4', 'sh4eb', 'sparc',
'sparc64'):
requested_arch = args.pop(0)
else:
requested_arch = None
if requested_arch:
app.build_architecture = requested_arch
# For some foreign architectures we need to use qemu
if (requested_arch != app.system_architecture
and (app.system_architecture, requested_arch) not in [
('amd64', 'i386'), ('amd64', 'lpia'), ('arm', 'armel'),
('armel', 'arm'), ('i386', 'lpia'), ('lpia', 'i386'),
('powerpc', 'ppc64'), ('ppc64', 'powerpc'),
('sparc', 'sparc64'), ('sparc64', 'sparc')]):
args += ['--debootstrap', 'qemu-debootstrap']
if 'mainonly' in argv or '--main-only' in argv:
app.extra_components = False
if 'mainonly' in argv:
args.remove('mainonly')
else:
args.remove('--main-only')
if len(args) < 1:
print >> stderr, 'Insufficient number of arguments.'
help(1)
# Parse the operation
args = app.set_operation(args.pop(0)) + args
if app.operation == 'build' and '.dsc' not in ' '.join(args):
print >> stderr, ('Error: You have to specify a .dsc file if you want '
'to build.')
exit(1)
# Execute the pbuilder command
if not '--debug-echo' in args:
exit(subprocess.call(app.get_command(args)))
else:
print app.get_command([arg for arg in args if arg != '--debug-echo'])
if __name__ == '__main__':
try:
main()
except KeyboardInterrupt:
print >> stderr, 'Manually aborted.'
exit(1)
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