653 lines
19 KiB
Perl
Executable file
653 lines
19 KiB
Perl
Executable file
#!/usr/bin/perl
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# Copyright (C) 2009 Neil Williams <codehelp@debian.org>
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#
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# This package is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (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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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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use IO::File;
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use Config::Auto;
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use File::Basename;
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use Parse::Debian::Packages;
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use strict;
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use warnings;
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use vars qw/ $progname $ourversion $dstrap $extra
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@archives $deb $cachedir $config_str %packages $retval $str $retries
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$dir $include $arch $foreign $suite $url $unpack
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@e $sourcesname $libdir $dpkgdir @debootstrap %suites $mirror $etcdir
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$repo @dirs @touch %sources $section %keys $host $key $value $type
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$file $config $tidy $noauth $keyring %keyrings /;
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$progname = basename($0);
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$ourversion = "0.0.5";
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$unpack = "true";
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while( @ARGV ) {
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$_= shift( @ARGV );
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last if m/^--$/;
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if (!/^-/) {
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unshift(@ARGV,$_);
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last;
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}
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elsif (/^(-\?|-h|--help|--version)$/) {
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&usageversion();
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exit( 0 );
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}
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elsif (/^(-f|--file)$/) {
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$file = shift(@ARGV);
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}
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elsif (/^(-a|--arch)$/) {
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$arch = shift(@ARGV);
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}
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elsif (/^(-d|--dir)$/) {
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$dir = shift(@ARGV);
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$dir .= ($dir =~ m:/$:) ? '' : "/";
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}
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elsif (/^(--tidy-up)$/) {
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$tidy++;
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}
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elsif (/^(--no-auth)$/) {
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$noauth++;
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}
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else {
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die "$progname: Unknown option $_.\n";
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}
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}
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die ("Need a configuration file - use $progname -f\n")
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if (not defined $file);
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$config = Config::Auto::parse("$file");
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%keys=();
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foreach $key (%$config)
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{
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$type = lc($key) if (ref $key ne "HASH");
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$value = $key if (ref $key eq "HASH");
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$keys{$type} = $value;
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}
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%sources=();
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%packages=();
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%suites=();
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%keyrings=();
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foreach $section (sort keys %keys)
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{
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if ($section eq "general")
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{
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$arch = $keys{$section}{'arch'} if (not defined $arch);
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$dir = $keys{$section}{'directory'} if (not defined $dir);
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# support the original value but replace by new value.
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$unpack = lc($keys{$section}{'unpack'})
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if (defined $keys{$section}{'forceunpack'});
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$unpack = lc($keys{$section}{'unpack'})
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if (defined $keys{$section}{'unpack'});
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$tidy++ if ((defined $keys{$section}{'cleanup'}) and
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($keys{$section}{'cleanup'} eq "true"));
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$noauth++ if ((defined $keys{$section}{'noauth'}) and
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($keys{$section}{'noauth'} eq "true"));
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@debootstrap = split(' ', lc($keys{$section}{'debootstrap'}));
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}
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else
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{
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$sources{$section}=$keys{$section}{'source'};
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$packages{$section}=$keys{$section}{'packages'};
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$suites{$section}=$keys{$section}{'suite'};
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$keyrings{$section}=$keys{$section}{'keyring'};
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}
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}
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print "$progname $ourversion using $file\n";
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$host = `dpkg-architecture -qDEB_BUILD_ARCH`;
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chomp ($host);
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$foreign++ if ($host ne $arch);
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print "$progname building '$arch' multistrap on '$host'\n";
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$cachedir = "var/cache/apt/"; # archives
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$libdir = "var/lib/apt/"; # lists
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$etcdir = "etc/apt/"; # sources
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$dpkgdir = "var/lib/dpkg/"; # state
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mkdir ("$dir") if (not -d "$dir");
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system ("mkdir -p ${dir}${cachedir}");
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system ("mkdir -p ${dir}${libdir}");
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system ("mkdir -p ${dir}${dpkgdir}");
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system ("mkdir -p ${dir}etc/apt/sources.list.d/");
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@dirs = qw/ alternatives info parts updates/;
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@touch = qw/ diversions statoverride status lock/;
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foreach my $dpkgd (@dirs) {
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if (not -d "${dir}${dpkgdir}$dpkgd") {
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mkdir "${dir}${dpkgdir}$dpkgd";
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}
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}
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foreach my $file (@touch) {
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utime(time, time, "${dir}${dpkgdir}/$file") or (
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open(F, ">${dir}${dpkgdir}/$file") && close F );
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}
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utime(time, time, "${dir}etc/shells") or
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(open(F, ">${dir}etc/shells") && close F );
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if (not -d "${dir}etc/network") {
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mkdir "${dir}etc/network";
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}
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if (not -d "${dir}dev") {
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mkdir "${dir}dev";
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}
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unlink ("${dir}etc/apt/sources.list.d/multistrap.sources.list")
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if (-f "${dir}etc/apt/sources.list.d/multistrap.sources.list");
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unlink ("${dir}etc/apt/sources.list")
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if (-f "${dir}etc/apt/sources.list");
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foreach $repo (sort keys %suites)
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{
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if (not -e "${dir}${cachedir}") {
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mkdir "${dir}${cachedir}";
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}
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if (not -e "$dir/${libdir}lists") {
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mkdir "$dir/${libdir}lists";
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}
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if (not -e "$dir/${libdir}lists/partial") {
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mkdir "$dir/${libdir}lists/partial";
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}
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if (not -e "$dir/${cachedir}archives") {
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mkdir "$dir/${cachedir}archives";
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}
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if (not -e "$dir/${cachedir}archives/partial") {
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mkdir "$dir/${cachedir}archives/partial";
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}
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if (-d "${dir}etc/apt/")
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{
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open (SOURCES, ">>${dir}etc/apt/sources.list.d/multistrap.sources.list")
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or die "Cannot open sources list $!";
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$mirror = $sources{$repo};
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$suite = $suites{$repo};
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print SOURCES<<END;
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deb $mirror $suite main
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deb-src $mirror $suite main
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END
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close SOURCES;
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}
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}
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foreach $keyring (values %keyrings)
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{
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next if not defined ($keyring);
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my $e=`printenv`;
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my $str = ($e =~ /\nUSER=root\n/) ? "" : "sudo ";
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$str = (-f "/usr/bin/sudo") ? "$str" : "";
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print "I: Installing $keyring\n";
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system ("$str apt-get install $keyring");
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}
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$config_str = '';
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$config_str .= " -o Apt::Architecture=$arch";
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$config_str .= " -o Apt::Get::AllowUnauthenticated=true"
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if (defined $noauth);
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$config_str .= " -o Apt::Get::Download-Only=true";
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$config_str .= " -o Apt::Install-Recommends=false";
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$config_str .= " -o Dir=$dir";
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$config_str .= " -o Dir::Etc=${dir}${etcdir}";
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$sourcesname = "sources.list.d/multistrap.sources.list";
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$config_str .= " -o Dir::Etc::SourceList=${dir}${etcdir}$sourcesname";
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$config_str .= " -o Dir::State=${dir}${libdir}";
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$config_str .= " -o Dir::State::Status=${dir}${dpkgdir}/status";
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$config_str .= " -o Dir::Cache=${dir}${cachedir}";
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system ("apt-get $config_str update");
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$str = join (' ', values %packages) . " ";
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chomp($str);
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my $k;
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foreach my $pkg (values %keyrings)
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{
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next if (not defined $pkg);
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my $status = `dpkg -s $pkg`;
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next if $status =~ /Status: install ok installed/;
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$k .= "$pkg ";
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}
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$k = "" if (not defined $k);
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$str .= "$k ";
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chomp($str);
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my $required = &get_required_debs;
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$str .= join (' ', @$required);
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chomp($str);
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print "apt-get -y $config_str install $str\n";
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$retval = system ("apt-get -y $config_str install $str");
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die ("apt download failed. Exit value: ".($retval/256)."\n")
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if ($retval != 0);
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&force_unpack if ($unpack eq "true");
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system ("touch ${dir}${libdir}lists/lock");
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&native if (not defined ($foreign));
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(not defined $tidy) ? system ("apt-get $config_str update") : &tidy_apt;
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print "\nMultistrap system installed successfully in $dir.\n\n";
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exit 0;
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sub force_unpack
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{
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my %unpack=();
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opendir (DEBS, "${dir}${cachedir}archives/")
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or die ("Cannot read apt archives directory.\n");
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@archives=grep(/.*\.deb$/, readdir DEBS);
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closedir (DEBS);
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print "I: Calculating obsolete packages\n";
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foreach $deb (sort @archives)
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{
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my $version = `dpkg -f ${dir}${cachedir}archives/$deb Version`;
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my $package = `dpkg -f ${dir}${cachedir}archives/$deb Package`;
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chomp ($version);
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chomp ($package);
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if (exists $unpack{$package})
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{
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my $test=system("dpkg --compare-versions $unpack{$package} '<<' $version");
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$test /= 256;
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# unlink version in $unpack if 0
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# unlink $deb (current one) if 1
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if ($test == 0)
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{
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my $old = $deb;
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$old =~ s/$version/$unpack{$package}/;
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print "I: Removing $old\n";
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unlink "${dir}${cachedir}archives/$old";
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next;
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}
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else
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{
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print "I: Removing $deb\n";
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unlink "${dir}${cachedir}archives/$deb";
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}
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}
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$unpack{$package}=$version;
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}
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open (LOCK, ">${dir}${libdir}lists/lock");
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close (LOCK);
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opendir (DEBS, "${dir}${cachedir}archives/")
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or die ("Cannot read apt archives directory.\n");
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@archives=grep(/.*\.deb$/, readdir DEBS);
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closedir (DEBS);
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my $old = `pwd`;
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chomp ($old);
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chdir ("${dir}");
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foreach $deb (sort @archives)
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{
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print "I: Extracting $deb...\n";
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system ("ar -p \"./${cachedir}archives/$deb\" data.tar.gz | zcat | tar -xf -");
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my $ver=`dpkg -f ./${cachedir}archives/$deb Version`;
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my $pkg=`dpkg -f ./${cachedir}archives/$deb Package`;
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chomp ($ver);
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chomp ($pkg);
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mkdir ("./tmp");
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my $tmpdir = `mktemp -p ./tmp -d -t multistrap.XXXXXX`;
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chomp ($tmpdir);
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mkdir ("./${tmpdir}/listing");
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system ("ar -p \"./${cachedir}archives/$deb\" data.tar.gz > ./${tmpdir}/listing/data.tar.gz");
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my $datatar = `tar -tzf ./${tmpdir}/listing/data.tar.gz`;
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my @lines = split("\n", $datatar);
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open (LIST, ">>./${dpkgdir}info/${pkg}.list");
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foreach my $l (@lines)
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{
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chomp ($l);
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$l =~ s:^\.::;
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$l =~ s:^/$:/\.:;
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$l =~ s:/$::;
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print LIST "$l\n";
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}
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close (LIST);
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system ("rm -rf ./${tmpdir}/listing");
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system ("dpkg -e ./${cachedir}archives/$deb ${tmpdir}/");
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opendir (MAINT, "./${tmpdir}");
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my @maint=grep(!m:\.\.?:, readdir (MAINT));
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closedir (MAINT);
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open (AVAIL, ">>./${dpkgdir}available");
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open (STATUS, ">>./${dpkgdir}status");
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foreach my $mscript (@maint)
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{
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rename "./${tmpdir}/$mscript", "./${dpkgdir}info/$pkg.$mscript";
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if ( $mscript eq "control" )
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{
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open (MSCRIPT, "./${dpkgdir}info/$pkg.$mscript");
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my @scr=<MSCRIPT>;
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close (MSCRIPT);
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my @avail = grep(!/^$/, @scr);
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print AVAIL @avail;
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print STATUS @avail;
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print AVAIL "\n";
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print STATUS "Status: install ok unpacked\n";
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unlink ("./${dpkgdir}info/$mscript");
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}
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}
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close (AVAIL);
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if ( -f "./${dpkgdir}info/$pkg.conffiles")
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{
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print STATUS "Conffiles:\n";
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print " -> Processing conffiles for $pkg\n";
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open (CONF, "./${dpkgdir}info/$pkg.conffiles");
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my @lines=<CONF>;
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close (CONF);
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foreach my $line (@lines)
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{
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chomp ($line);
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my $md5=`md5sum ./$line | cut -d" " -f1`;
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chomp ($md5);
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print STATUS " $line $md5\n";
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}
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}
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print STATUS "\n";
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close (STATUS);
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system ("rm -rf ./${tmpdir}");
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}
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chdir ("$old");
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print "I: Unpacking complete.\n";
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}
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sub tidy_apt
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{
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print "I: Tidying up apt cache and list data.\n";
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unlink ("${dir}etc/apt/sources.list")
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if (-f "${dir}etc/apt/sources.list");
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opendir (DEBS, "${dir}${libdir}lists/")
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or die ("Cannot read apt lists directory.\n");
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my @lists=grep(!m:\.\.?$:, readdir DEBS);
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closedir (DEBS);
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foreach my $file (@lists)
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{
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next if (-d $file);
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unlink ("${dir}${libdir}lists/$file");
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}
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opendir (DEBS, "${dir}${cachedir}/")
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or die ("Cannot read apt cache directory/.\n");
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my @files=grep(!m:\.\.?$:, readdir DEBS);
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closedir (DEBS);
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foreach my $file (@files)
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{
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next if (-d $file);
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next unless ($file =~ /\.bin$/);
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unlink ("${dir}${cachedir}$file");
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}
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if ($unpack eq "true")
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{
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opendir (DEBS, "${dir}${cachedir}/archives/")
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or die ("Cannot read apt archives directory/.\n");
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my @files=grep(!m:\.\.?$:, readdir DEBS);
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closedir (DEBS);
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foreach my $file (@files)
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{
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next if (-d $file);
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next unless ($file =~ /\.deb$/);
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unlink ("${dir}${cachedir}archives/$file");
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}
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}
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}
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# if native arch, do a few tasks just because we can and probably should.
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sub native
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{
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print "I: Native mode - configuring unpacked packages . . .\n";
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my $e=`printenv`;
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my $str = ($e =~ /\nUSER=root\n/) ? "" : "sudo";
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$str = (-f "/usr/bin/sudo") ? "$str" : "";
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system ("$str chroot $dir dpkg --configure -a");
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}
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sub get_required_debs
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{
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# emulate required="$(get_debs Priority: required)"
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# from debootstrap/functions
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# needs to be run after the first apt-get install so that
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# Packages files exist
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my @required=();
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my @debs=();
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opendir (PKGS, "${dir}${libdir}lists/")
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or die ("Cannot open ${dir}${libdir}lists/ directory. $!\n");
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my @lists=grep(/_Packages$/, readdir (PKGS));
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closedir (PKGS);
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foreach my $strap (@debootstrap)
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{
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my $s = lc($strap);
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foreach my $l (@lists)
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{
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next unless ($l =~ /$s/);
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push (@required, $l);
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}
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}
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foreach my $file (@required)
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{
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my $fh = IO::File->new("${dir}${libdir}lists/$file");
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my $parser = Parse::Debian::Packages->new( $fh );
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while (my %package = $parser->next)
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{
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next unless $package{'Priority'} eq "required";
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push @debs, $package{'Package'};
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}
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}
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return \@debs;
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}
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sub usageversion {
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print(STDERR <<END)
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$progname version $ourversion
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Usage:
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$progname [-a ARCH] [-d DIR] -f CONFIG_FILE
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$progname -?|-h|--help|--version
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Command:
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-f|--file CONFIG_FILE: path the the multistrap configuration file.
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Options:
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-a|--arch ARCHITECTURE: override the configuration file architecture.
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-d|--dir PATH: override the configuration file directory.
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--no-auth: do not use Secure Apt for any repositories
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--tidy-up: remove apt cache data and downloaded archives.
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-?|-h|--help: print this usage message and exit
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--version: print this usage message and exit
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$progname extends debootstrap to provide support for multiple
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repositories, using a configuration file to specify the relevant suites,
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architecture, extra packages and the mirror to use for each repository.
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Example configuration:
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[General]
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arch=armel
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directory=/opt/multistrap/
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# same as --tidy-up option if set to true
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cleanup=true
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# same as --no-auth option if set to true
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# keyring packages listed in each debootstrap will
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# still be installed.
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noauth=false
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# extract all downloaded archives (default is true)
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unpack=true
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# the order of sections is not important.
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# the debootstrap option determines which repository
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# is used to calculate the list of Priority: required packages.
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debootstrap=Debian
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[Debian]
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packages=
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source=http://ftp.uk.debian.org/debian
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keyring=debian-archive-keyring
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suite=lenny
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This will result in a completely normal debootstrap of Debian lenny from
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the specified mirror, for armel in /opt/multistrap/.
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'Architecture' and 'directory' can be overridden on the command line.
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Specify a package to extend the debootstap to include that package and
|
|
all dependencies. Dependencies will be calculated by apt so as to use
|
|
only the most recent suitable version from all configured repositories.
|
|
|
|
General settings:
|
|
|
|
'directory' specifies the top level directory where the debootstrap
|
|
will be created - it is not packed into a .tgz once complete.
|
|
|
|
END
|
|
|| die "$progname: failed to write usage: $!\n";
|
|
}
|
|
|
|
=pod
|
|
|
|
=head1 Name
|
|
|
|
em_multistrap - extends debootstrap for multiple repository support
|
|
|
|
=head1 Synopsis
|
|
|
|
em_multistrap [-a ARCH] [-d DIR] -f CONFIG_FILE
|
|
em_multistrap -?|-h|--help|--version
|
|
|
|
=head1 Options
|
|
|
|
(These options can also be set in the configuration file.)
|
|
|
|
--tidy-up - remove apt cache data, downloaded Packages files and
|
|
the apt package cache. Same as cleanup=true.
|
|
|
|
--no-auth - allow the use of unauthenticated repositories. Same
|
|
as noauth=true
|
|
|
|
=head1 Description
|
|
|
|
em_multistrap provides a debootstrap-like method based on apt and
|
|
extended to provide support for multiple repositories, using a
|
|
configuration file to specify the relevant suites, architecture,
|
|
extra packages and the mirror to use for each debootstrap.
|
|
|
|
The aim is to create a complete debootstrap with all packages
|
|
installed and configured, instead of just the base system.
|
|
|
|
Example configuration:
|
|
|
|
[General]
|
|
arch=armel
|
|
directory=/opt/multistrap/
|
|
# same as --tidy-up option if set to true
|
|
cleanup=true
|
|
# same as --no-auth option if set to true
|
|
# keyring packages listed in each debootstrap will
|
|
# still be installed.
|
|
noauth=false
|
|
# extract all downloaded archives (default is true)
|
|
unpack=true
|
|
# the order of sections is not important.
|
|
# the debootstrap option determines which repository
|
|
# is used to calculate the list of Priority: required packages.
|
|
debootstrap=Debian
|
|
|
|
[Debian]
|
|
packages=
|
|
source=http://ftp.uk.debian.org/debian
|
|
keyring=debian-archive-keyring
|
|
suite=lenny
|
|
|
|
This will result in a completely normal debootstrap of Debian lenny from
|
|
the specified mirror, for armel in '/opt/multistrap/'.
|
|
|
|
Specify a package to extend the multistrap to include that package and
|
|
all dependencies.
|
|
|
|
Specify more debootstraps by adding new sections. Section names are used
|
|
in the debootstrap general option.
|
|
|
|
Section names are case-insensitive.
|
|
|
|
e.g. change
|
|
|
|
debootstrap=Debian
|
|
|
|
to
|
|
|
|
debootstrap=Grip
|
|
|
|
then add the new section for Grip:
|
|
|
|
[Grip]
|
|
packages=locales
|
|
keyring=emdebian-archive-keyring
|
|
source=http://www.emdebian.org/grip
|
|
suite=lenny
|
|
|
|
Setting Grip instead of Debian in the debootstrap option, as above,
|
|
will provide a base system from Emdebian Grip 1.0 and locate any
|
|
missing dependencies in Debian 5.0 Lenny, allowing you to add any
|
|
package(s) you need from Debian that are not yet in Emdebian Grip.
|
|
|
|
All dependencies are resolved only by apt, using all configured
|
|
repositories, to use only the most recent and most suitable
|
|
dependencies. Note that multistrap turns off Install-Recommends
|
|
so if the multistrap needs a package that is only a Recommended
|
|
dependency, the recommended package needs to be specified in the
|
|
packages line explicitly.
|
|
|
|
'Architecture' and 'directory' can be overridden on the command line.
|
|
Other general options have command line options, except debootstrap
|
|
itself.
|
|
|
|
=head1 General settings:
|
|
|
|
'directory' specifies the top level directory where the debootstrap
|
|
will be created - it is not packed into a .tgz once complete.
|
|
|
|
As with debootstrap, em_multistrap will continue after errors.
|
|
|
|
em_multistrap does not currently implement the machine:variant support
|
|
used in Emdebian but the build directory is not packed up at the
|
|
end of the run so other scripts can be used to implement customisations.
|
|
|
|
=head1 Secure Apt
|
|
|
|
To use authenticated apt repositories, multistrap either needs to be
|
|
able to install an appropriate keyring package from the existing apt
|
|
sources *outside the multistrap environment* or have the relevant keys
|
|
already configured using apt-key *on the host system*.
|
|
|
|
If relevant packages exist, specify them in the 'keyring' option for
|
|
each repository. em_multistrap will then check that apt has already
|
|
installed this package so that the repository can be authenticated
|
|
before any packages are downloaded from it.
|
|
|
|
Note that *all* repositories to be used with multistrap must be
|
|
authenticated or apt will fail. Similarly, secure apt can only be
|
|
disabled for all repositories (by using the --no-auth command line
|
|
option or setting the general noauth option in the configuration
|
|
file), even if only one repository does not have a suitable keyring
|
|
available. Not all packages need keyring packages, if you configure
|
|
apt-key appropriately.
|
|
|
|
The keyring package(s) will also be installed inside the multistrap
|
|
environment to match the installed apt sources for the multistrap.
|
|
|
|
All configuration of apt-key needs to be done for the machine
|
|
running multistrap itself.
|
|
|
|
=head1 State
|
|
|
|
multistrap is stateless - if the directory exists, it will simply
|
|
proceed as normal and apt will try to pick up where it left off.
|
|
|
|
=head1 Native mode - multistrap
|
|
|
|
em_multistrap was not intended for native support, it was developed for
|
|
cross architecture support. In order for multiple repositories to be
|
|
used, em_multistrap only unpacks the packages selected by apt.
|
|
|
|
In native mode, various post-multistrap operations are likely to be
|
|
needed that debootstrap would do for you:
|
|
|
|
1. copy /etc/hosts into the chroot
|
|
2. clean the environment to unset LANGUAGE, LC_ALL and LANG
|
|
to silence nuisance perl warnings that obscure other errors
|
|
|
|
(An alternative to unset the localisation variables is to add
|
|
locales to your multistrap configuration file in the 'packages'
|
|
option.
|
|
|
|
Eventually, multistrap will either replace em_multistrap or call
|
|
em_multistrap with --arch and take over native duties.
|
|
|
|
=cut
|