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#!/usr/bin/python
# Last modified by Antonio Olmo Titos <aolmo@emergya.info> on 26 july 2005.
import sys
import shutil
import os
import subprocess
import debconf
class CommandFailed(Exception): pass
class Installer:
source = '/source'
target = '/target'
def frontend(self, type='noui'):
ui = getattr(__import__('frontend.%s' % type), type)
self.wizard = ui.Wizard()
hostname = self.wizard.get_hostname()
timezone, keymap, locales = self.wizard.get_locales()
fullname, username, password = self.wizard.get_user()
self.install(timezone,keymap,locales,username,password,fullname,hostname)
def install(self, timezone, keymap, locales, username, password, fullname, hostname):
mountpoints = self.wizard.get_partitions()
self.mount_target(mountpoints)
self.mount_source()
try:
self.copy_all()
finally:
self.unmount_source()
try:
self.configure_fstab(mountpoints)
self.configure_timezone(timezone)
self.configure_keymap(keymap)
self.configure_user(username, password, fullname)
self.configure_hostname(hostname)
self.configure_network()
self.configure_hardware()
finally:
self.unmount_target(mountpoints)
def configure_fstab(self, mountpoints):
fstab = open(os.path.join(self.target,'etc/fstab'), 'w')
for path, device in mountpoints.items():
if path == '/':
passno = 1
else:
passno = 2
filesystem = 'ext3'
options = 'defaults'
print >>fstab, '%s\t%s\t%s\t%s\t%d\t%d' % (device, path, filesystem, options, 0, passno)
fstab.close()
def configure_timezone(self, timezone):
# tzsetup ignores us if these exist
for tzfile in ('etc/timezone', 'etc/localtime'):
path = os.path.join(self.target, tzfile)
if os.path.exists(path):
os.unlink(path)
self.set_debconf('base-config', 'tzconfig/preseed_zone', timezone)
self.chrex('tzsetup', '-y')
def configure_keymap(self, keymap):
self.set_debconf('debian-installer', 'debian-installer/keymap', keymap)
self.chrex('install-keymap', keymap)
def configure_user(self, username, password, fullname):
self.chrex('passwd', '-l', 'root')
self.set_debconf('passwd', 'passwd/username', username)
self.set_debconf('passwd', 'passwd/user-fullname', fullname)
self.set_debconf('passwd', 'passwd/user-password', password)
self.set_debconf('passwd', 'passwd/user-password-again', password)
self.reconfigure('passwd')
def configure_hostname(self, hostname):
fp = open(os.path.join(self.target, 'etc/hostname'), 'w')
print >>fp, hostname
fp.close()
def configure_hardware(self):
self.chrex('mount', '-t', 'proc', 'proc', '/proc')
self.chrex('mount', '-t', 'sysfs', 'sysfs', '/sys')
kernel_version = open('/proc/sys/kernel/osrelease').readline().strip()
packages = ['gnome-panel', 'xserver-xorg', 'linux-image-' + kernel_version]
try:
for package in packages:
self.copy_debconf(package)
self.reconfigure(package)
finally:
self.chrex('umount', '/proc')
self.chrex('umount', '/sys')
def configure_network(self):
shutil.copyfile('/etc/network/interfaces',
os.path.join(self.target, 'etc/network/interfaces'))
def mount_target(self, mountpoints):
os.mkdir(self.target)
self.ex('mount', mountpoints['/'], self.target)
for path, device in mountpoints.items():
if path in ('/', 'swap'):
continue
path = os.path.join(self.target, path[1:])
os.mkdir(path)
self.ex('mount', device, path)
def unmount_target(self, mountpoints):
for path, device in mountpoints.items():
if path in ('/', 'swap'):
continue
path = os.path.join(self.target, path[1:])
self.ex('umount', path)
self.ex('umount', self.target)
def copy_all(self):
files = []
total_size = 0
for dirpath, dirnames, filenames in os.walk(self.source):
sourcepath = dirpath[len(self.source)+1:]
for name in dirnames + filenames:
relpath = os.path.join(sourcepath, name)
fqpath = os.path.join(self.source, dirpath, name)
if os.path.isfile(fqpath):
size = os.path.getsize(fqpath)
total_size += size
files.append((relpath, size))
else:
files.append((relpath, None))
copy = subprocess.Popen(['cpio', '-d0mp', self.target],
cwd=self.source,
stdin=subprocess.PIPE)
copied_bytes = 0
for path, size in files:
copy.stdin.write(path + '\0')
if size is not None:
copied_bytes += size
per = (copied_bytes * 100) / total_size
self.wizard.set_progress(per)
copy.stdin.close()
copy.wait()
def mount_source(self):
from os import path
files = ['/cdrom/casper/filesystem.cloop', '/cdrom/META/META.squashfs']
for f in files:
if path.isfile(f) and path.splitext(f)[1] == '.cloop':
file = f
self.dev = '/dev/cloop1'
elif path.isfile(f) and path.splitext(f)[1] == '.squashfs':
file = f
self.dev = '/dev/loop3'
else:
return -1
self.ex('losetup', self.dev, file)
os.mkdir(self.source)
self.ex('mount', self.dev, self.source)
return 0
def unmount_source(self):
self.ex('umount', self.source)
self.ex('losetup', '-d', self.dev)
def ex(self, *args):
status = subprocess.call(args)
if status != 0:
raise CommandFailed(str(args))
def chrex(self, *args):
self.ex('chroot', self.target, *args)
def copy_debconf(self, package):
targetdb = os.path.join(self.target, 'var/cache/debconf/config.dat')
self.ex('debconf-copydb', 'configdb', 'targetdb', '-p', '^%s/' % package,
'--config=Name:targetdb', '--config=Driver:File','--config=Filename:' + targetdb)
def set_debconf(self, owner, question, value):
dccomm = subprocess.Popen(['chroot', self.target, 'debconf-communicate', '-fnoninteractive', owner],
stdin=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True)
dc = debconf.Debconf(read=dccomm.stdout, write=dccomm.stdin)
dc.set(question, value)
dc.fset(question, 'seen', 'true')
dccomm.stdin.close()
dccomm.wait()
def reconfigure(self, package):
self.chrex('dpkg-reconfigure', '-fnoninteractive', package)
if __name__ == '__main__':
Installer().frontend()
# What to do when no arguments are provided:
if len (sys.argv) < 2:
sys.stderr.write ('%s: no arguments provided.\n' % sys.argv [0])
sys.exit (2)
else:
Installer().install({'/' : sys.argv[1]}, 'US/Pacific', 'dvorak', 'mdz', 'mdz2', 'Matt Zimmerman', 'ubuntu')
# vim:ai:et:sts=4:tw=80:sw=4:
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