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350 lines
10 KiB
Python
Executable File
350 lines
10 KiB
Python
Executable File
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2007-2010 Siegfried-A. Gevatter <rainct@ubuntu.com>
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# With some changes by Iain Lane <iain@orangesquash.org.uk>
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# Based upon pbuilder-dist-simple by Jamin Collins and Jordan Mantha.
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#
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# ##################################################################
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# See file /usr/share/common-licenses/GPL for more details.
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#
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# ##################################################################
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#
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# This script is a wrapper to be able to easily use pbuilder/cowbuilder for
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# different distributions (eg, Gutsy, Hardy, Debian unstable, etc).
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#
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# You can create symlinks to a pbuilder-dist executable to get different
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# configurations. For example, a symlink called pbuilder-hardy will assume
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# that the target distribution is always meant to be Ubuntu Hardy.
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import sys
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import os
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import ubuntutools.misc
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debian_distros = ['etch', 'lenny', 'squeeze', 'sid', 'stable', \
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'testing', 'unstable', 'experimental']
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class pbuilder_dist:
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def __init__(self, builder):
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# Base directory where pbuilder will put all the files it creates.
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self.base = None
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# Name of the operation which pbuilder should perform.
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self.operation = None
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# Wheter additional components should be used or not. That is,
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# 'universe' and 'multiverse' for Ubuntu chroots and 'contrib'
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# and 'non-free' for Debian.
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self.extra_components = True
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# File where the log of the last operation will be saved.
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self.logfile = None
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# System architecture
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self.system_architecture = None
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# Build architecture
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self.build_architecture = None
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# System's distribution
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self.system_distro = None
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# Target distribution
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self.target_distro = None
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# This is an identificative string which will either take the form
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# 'distribution' or 'distribution-architecture'.
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self.chroot_string = None
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# Authentication method
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self.auth = 'sudo'
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# Builder
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self.builder = builder
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# Ensure that the used builder is installed
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for file in os.environ['PATH'].split(':'):
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if os.path.exists(os.path.join(file, builder)):
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builder = ''
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break
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if builder:
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print 'Error: Could not find "%s".' % builder
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sys.exit(1)
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##############################################################
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self.base = os.path.expanduser(os.environ.get('PBUILDFOLDER', '~/pbuilder/'))
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if not os.path.exists(self.base):
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os.makedirs(self.base)
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if 'PBUILDAUTH' in os.environ:
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self.auth = os.environ['PBUILDAUTH']
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self.system_architecture = ubuntutools.misc.host_architecture()
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self.system_distro = ubuntutools.misc.system_distribution()
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if not self.system_architecture or not self.system_distro:
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exit(1)
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self.target_distro = self.system_distro
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##############################################################
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def __getitem__(self, name):
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return getattr(self, name)
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def set_target_distro(self, distro):
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""" pbuilder_dist.set_target_distro(distro) -> None
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Check if the given target distribution name is correct, if it
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isn't know to the system ask the user for confirmation before
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proceeding, and finally either save the value into the appropiate
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variable or finalize pbuilder-dist's execution.
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"""
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if not distro.isalpha():
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print 'Error: «%s» is an invalid distribution codename.' % distro
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sys.exit(1)
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if not os.path.isfile(os.path.join('/usr/share/debootstrap/scripts/', distro)):
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if os.path.isdir('/usr/share/debootstrap/scripts/'):
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answer = ask('Warning: Unknown distribution «%s». Do you '\
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'want to continue [y/N]? ' % distro)
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if answer not in ('y', 'Y'):
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sys.exit(0)
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else:
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print 'Please install package "debootstrap".'
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sys.exit(1)
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self.target_distro = distro
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def set_operation(self, operation):
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""" pbuilder_dist.set_operation -> None
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Check if the given string is a valid pbuilder operation and
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depending on this either save it into the appropiate variable
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or finalize pbuilder-dist's execution.
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"""
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arguments = ('create', 'update', 'build', 'clean', 'login', 'execute')
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if operation not in arguments:
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if operation.endswith('.dsc'):
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if os.path.isfile(operation):
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self.operation = 'build'
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return operation
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else:
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print 'Error: Could not find file «%s».' % operation
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sys.exit(1)
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else:
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print 'Error: «%s» is not a recognized argument.' % operation
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print 'Please use one of those: ' + ', '.join(arguments) + '.'
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sys.exit(1)
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else:
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self.operation = operation
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return ''
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def get_command(self, remaining_arguments = None):
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""" pbuilder_dist.get_command -> string
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Generate the pbuilder command which matches the given configuration
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and return it as a string.
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"""
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if not self.build_architecture:
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self.chroot_string = self.target_distro
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self.build_architecture = self.system_architecture
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else:
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self.chroot_string = '%(target_distro)s-%(build_architecture)s' % self
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prefix = os.path.join(self.base, self.chroot_string)
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result = '%s_result/' % prefix
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if not self.logfile and self.operation != 'login':
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self.logfile = os.path.normpath('%s/last_operation.log' % result)
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if not os.path.isdir(result):
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# Create the results directory, if it doesn't exist.
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os.makedirs(result)
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if self.builder == 'pbuilder':
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base = '--basetgz "%s-base.tgz"' % prefix
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elif self.builder == 'cowbuilder':
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base = '--basepath "%s-base.cow"' % prefix
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else:
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print 'Error: Unrecognized builder "%s".' % self.builder
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sys.exit(1)
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arguments = [
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'--%s' % self.operation,
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base,
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'--distribution "%(target_distro)s"' % self,
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'--buildresult "%s"' % result,
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'--aptcache "/var/cache/apt/archives/"',
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'--override-config',
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]
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if self.logfile:
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arguments.append('--logfile %s' % self.logfile)
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if os.path.exists('/var/cache/archive/'):
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arguments.append('--bindmounts "/var/cache/archive/"')
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localrepo = '/var/cache/archive/%(target_distro)s' % self
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if os.path.exists(localrepo):
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arguments.append('--othermirror ' +\
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'"deb file:///var/cache/archive/ %(target_distro)s/"' % self)
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if self.target_distro in debian_distros:
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arguments.append('--mirror "ftp://ftp.debian.org/debian"')
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components = 'main'
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if self.extra_components:
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components += ' contrib non-free'
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else:
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arguments.append('--mirror "http://mirrors.kernel.org/ubuntu/"')
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components = 'main restricted'
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if self.extra_components:
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components += ' universe multiverse'
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arguments.append('--components "%s"' % components)
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if self.build_architecture != self.system_architecture:
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arguments.append('--debootstrapopts --arch')
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arguments.append('--debootstrapopts "%(build_architecture)s"' % self)
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apt_conf_dir = os.path.join(self.base, 'etc/%(target_distro)s/apt.conf' % self)
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if os.path.exists(apt_conf_dir):
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arguments.append('--aptconfdir "%s"' % apt_conf_dir)
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# Append remaining arguments
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if remaining_arguments:
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arguments.extend(remaining_arguments)
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return '%s /usr/sbin/%s %s' % (self.auth, self.builder,
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' '.join(arguments))
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def ask(question):
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""" ask(question) -> string
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Ask the given question and return the answer. Also catch
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KeyboardInterrupt (Ctrl+C) and EOFError (Ctrl+D) exceptions and
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immediately return None if one of those is found.
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"""
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try:
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answer = raw_input(question)
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except (KeyboardInterrupt, EOFError):
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print
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answer = None
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return answer
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def help(exit_code = 0):
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""" help() -> None
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Print a help message for pbuilder-dist, and exit with the given code.
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"""
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print 'See man pbuilder-dist for more information.'
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sys.exit(exit_code)
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def main():
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""" main() -> None
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This is pbuilder-dist's main function. It creates a pbuilder_dist
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object, modifies all necessary settings taking data from the
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executable's name and command line options and finally either ends
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the script and runs pbuilder itself or exists with an error message.
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"""
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script_name = os.path.basename(sys.argv[0])
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parts = script_name.split('-')
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# Copy arguments into another list for save manipulation
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args = sys.argv[1:]
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if '-' in script_name and (parts[0] != 'pbuilder' and \
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parts[0] != 'cowbuilder') or len(parts) > 3:
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print 'Error: «%s» is not a valid name for a «pbuilder-dist» executable.' % script_name
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sys.exit(1)
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if len(args) < 1:
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print 'Insufficient number of arguments.'
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help(1)
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if args[0] in ('-h', '--help', 'help'):
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help(0)
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app = pbuilder_dist(parts[0])
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if len(parts) > 1 and parts[1] != 'dist' and '.' not in parts[1]:
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app.set_target_distro(parts[1])
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else:
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app.set_target_distro(args.pop(0))
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if len(parts) > 2:
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requested_arch = parts[2]
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elif len(args) > 0 and args[0] in ('i386', 'amd64'):
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requested_arch = args.pop(0)
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else:
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requested_arch = None
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if requested_arch:
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if requested_arch in ('i386', 'amd64') and app.system_architecture == 'amd64':
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app.build_architecture = requested_arch
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else:
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print 'Error: Architecture switching is not supported on your system; wrong filename.'
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sys.exit(1)
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if 'mainonly' in sys.argv:
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app.extra_components = False
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args.remove('mainonly')
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if len(args) < 1:
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print 'Insufficient number of arguments.'
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help(1)
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# Parse the operation
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args = [app.set_operation(args.pop(0))] + args
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if app.operation == 'build' and not '.dsc' in ' '.join(args):
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print 'Error: You have to specify a .dsc file if you want to build.'
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sys.exit(1)
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# Execute the pbuilder command
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if not '--debug-echo' in args:
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sys.exit(os.system(app.get_command(args)))
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else:
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print app.get_command((arg for arg in args if arg)).replace(
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' --debug-echo', '')
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if __name__ == '__main__':
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try:
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main()
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except KeyboardInterrupt:
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print 'Manually aborted.'
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sys.exit(1)
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