392 lines
10 KiB
Perl
Executable File
392 lines
10 KiB
Perl
Executable File
#!/usr/bin/perl -w
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use strict;
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use Compress::Zlib;
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use File::stat;
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my $mirror = $ENV{'MIRROR'} || die "Set the MIRROR var ...\n";
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my $localdebs = $ENV{'LOCALDEBS'} || $mirror;
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my $security = $ENV{'SECURITY'} || $mirror;
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my $basedir = $ENV{'BASEDIR'} || die "Set the BASEDIR var ...\n";
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my $codename = $ENV{'CODENAME'} || die "Set the CODENAME var ...\n";
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my $tdir = $ENV{'TDIR'} || die "Set the TDIR var ...\n";
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require "$basedir/tools/link.pl";
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my $iso_blksize = 2048;
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my $log_opened = 0;
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my $old_split = $/;
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sub msg_ap {
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my $level = shift;
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if (!$log_opened) {
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open(AP_LOG, ">> $tdir/$codename/log.add_packages")
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|| die "Can't write in $tdir/log.add_packages!\n";
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}
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print AP_LOG @_;
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}
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sub size_in_blocks {
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my $size_in_bytes = shift;
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return (1 + int(($size_in_bytes + $iso_blksize - 1) / $iso_blksize));
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}
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# From a package name and section, work out the directory where its
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# corresponding Packages file should live
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sub Packages_dir {
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my $dir = shift;
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my $file = shift;
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my $section = shift;
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my ($pdir, $dist);
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if ($file =~ /\/main\//) {
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$dist = "main";
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} elsif ($file =~ /\/contrib\//) {
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$dist = "contrib";
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} elsif ($file =~ /\/non-free\//) {
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$dist = "non-free";
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} elsif ($file =~ /\/local\//) {
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$dist = "local";
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}
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$pdir = "$dir/dists/$codename/$dist";
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if ($section eq "debian-installer") {
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$pdir = "$dir/dists/$codename/$dist/debian-installer";
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}
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return $pdir;
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}
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# Dump the apt-cached data into a Packages file; make the parent dir
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# for the Packages file if necesssary
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sub add_Packages_entry {
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my ($p, $file, $section, $pdir, $pkgfile, $gz);
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my $dir = shift;
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my $arch = shift;
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my ($st1, $st2, $size1, $size2);
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my $blocks_added = 0;
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my $old_blocks = 0;
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my $new_blocks = 0;
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m/^Package: (\S+)/m and $p = $1;
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m/^Section: (\S+)/m and $section = $1;
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if ($arch eq "source") {
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m/^Directory: (\S+)/mi and $file = $1;
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$pdir = Packages_dir($dir, $file, $section) . "/source";
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$pkgfile = "$pdir/Sources";
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} else {
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m/^Filename: (\S+)/mi and $file = $1;
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$pdir = Packages_dir($dir, $file, $section) . "/binary-$arch";
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$pkgfile = "$pdir/Packages";
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}
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msg_ap(0, " Adding $p to $pkgfile(.gz)\n");
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if (! -d $pdir) {
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system("mkdir -p $pdir");
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$blocks_added++;
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}
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if (-e $pkgfile) {
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$st1 = stat("$pkgfile");
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$old_blocks = size_in_blocks($st1->size);
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}
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if (-e "$pkgfile.gz") {
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$st1 = stat("$pkgfile.gz");
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$old_blocks += size_in_blocks($st1->size);
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}
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open(PFILE, ">>$pkgfile");
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print PFILE $_;
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close(PFILE);
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$gz = gzopen("$pkgfile.gz", "ab9") or die "Failed to open $pkgfile.gz: $gzerrno\n";
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$gz->gzwrite($_) or die "Failed to write $pkgfile.gz: $gzerrno\n";
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$gz->gzclose();
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$st1 = stat("$pkgfile");
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$st2 = stat("$pkgfile.gz");
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$size1 = $st1->size;
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$size2 = $st2->size;
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$new_blocks += size_in_blocks($st1->size);
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$new_blocks += size_in_blocks($st2->size);
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$blocks_added += ($new_blocks - $old_blocks);
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msg_ap(0, " now $size1 / $size2 bytes, $blocks_added blocks added\n");
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return $blocks_added;
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}
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sub add_md5_entry {
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my $dir = shift;
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my $arch = shift;
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my ($pdir, $file, $md5);
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my $md5file = "$dir/md5sum.txt";
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my ($st, $size);
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my $p;
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my $blocks_added = 0;
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my $old_blocks = 0;
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my $new_blocks = 0;
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m/^Package: (\S+)/mi and $p = $1;
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if (-e $md5file) {
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$st = stat("$md5file");
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$old_blocks = size_in_blocks($st->size);
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}
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open(MD5FILE, ">>$md5file");
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if ($arch eq "source") {
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m/^Directory: (\S+)/mi and $pdir = $1;
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m/^ (\S+) (\S+) ((\S+).*dsc)/m and print MD5FILE "$1 ./$pdir/$3\n";
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m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and print MD5FILE "$1 ./$pdir/$3\n";
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m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and print MD5FILE "$1 ./$pdir/$3\n";
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} else {
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m/^Filename: (\S+)/m and $file = $1;
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m/^MD5sum: (\S+)/m and print MD5FILE "$1 ./$file\n";
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}
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close(MD5FILE);
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msg_ap(0, " Adding $p to $md5file\n");
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$st = stat("$md5file");
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$size = $st->size;
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$new_blocks = size_in_blocks($st->size);
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$blocks_added = $new_blocks - $old_blocks;
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msg_ap(0, " now $size bytes, added $blocks_added blocks\n");
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return $blocks_added;
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}
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# Roll back the results of add_Packages_entry()
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sub remove_Packages_entry {
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my ($p, $file, $section, $pdir, $pkgfile, $tmp_pkgfile, $match, $gz);
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my $dir = shift;
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my $arch = shift;
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my ($st1, $st2, $size1, $size2);
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my $blocks_removed = 0;
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my $old_blocks = 0;
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my $new_blocks = 0;
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m/^Package: (\S+)/m and $p = $1;
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m/^Section: (\S+)/m and $section = $1;
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if ($arch eq "source") {
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m/^Directory: (\S+)/mi and $file = $1;
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$pdir = Packages_dir($dir, $file, $section) . "/source";
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$pkgfile = "$pdir/Sources";
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} else {
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m/^Filename: (\S+)/mi and $file = $1;
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$pdir = Packages_dir($dir, $file, $section) . "/binary-$arch";
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$pkgfile = "$pdir/Packages";
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}
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if (-e $pkgfile) {
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$st1 = stat("$pkgfile");
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$old_blocks += size_in_blocks($st1->size);
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}
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if (-e "$pkgfile.gz") {
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$st2 = stat("$pkgfile.gz");
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$old_blocks += size_in_blocks($st2->size);
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}
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$tmp_pkgfile = "$pkgfile" . ".rollback";
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msg_ap(0, " Removing $p from $pkgfile(.gz)\n");
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open(IFILE, "<$pkgfile");
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open(OFILE, ">>$tmp_pkgfile");
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$gz = gzopen("$pkgfile.gz", "wb9");
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while (defined($match = <IFILE>)) {
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if (! ($match =~ /^Package: \Q$p\E$/m)) {
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print OFILE $match;
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$gz->gzwrite($match) or die "Failed to write $pkgfile.gz: $gzerrno\n";
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}
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}
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$gz->gzclose();
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close(IFILE);
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close(OFILE);
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rename $tmp_pkgfile, $pkgfile;
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$st1 = stat("$pkgfile");
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$st2 = stat("$pkgfile.gz");
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$size1 = $st1->size;
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$size2 = $st2->size;
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$new_blocks += size_in_blocks($st1->size);
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$new_blocks += size_in_blocks($st2->size);
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$blocks_removed += ($old_blocks - $new_blocks);
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msg_ap(0, " now $size1 / $size2 bytes, $blocks_removed blocks removed\n");
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return $blocks_removed;
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}
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sub remove_md5_entry {
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my $dir = shift;
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my $arch = shift;
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my ($pdir, $file, $md5, $match, $present);
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my $md5file = "$dir/md5sum.txt";
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my $tmp_md5file = "$dir/md5sum.txt.tmp";
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my @fileslist;
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my ($st, $size, $p);
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my $blocks_removed = 0;
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my $old_blocks = 0;
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my $new_blocks = 0;
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$/ = $old_split; # Browse by line again
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m/^Package: (\S+)/mi and $p = $1;
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if ($arch eq "source") {
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m/^Directory: (\S+)/mi and $pdir = $1;
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m/^ (\S+) (\S+) ((\S+).*dsc)/m and push(@fileslist, "$1 ./$pdir/$3");
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m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and push(@fileslist, "$1 ./$pdir/$3");
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m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and push(@fileslist, "$1 ./$pdir/$3");
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} else {
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m/^Filename: (\S+)/m and $file = $1;
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m/^MD5Sum: (\S+)/mi and push(@fileslist, "$1 ./$file");
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}
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if (-e $md5file) {
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$st = stat("$md5file");
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$old_blocks = size_in_blocks($st->size);
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}
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open(IFILE, "<$md5file");
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open(OFILE, ">>$tmp_md5file");
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while (defined($match = <IFILE>)) {
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$present = 0;
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foreach my $entry (@fileslist) {
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if (($match =~ /\Q$entry\E$/m)) {
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$present++;
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}
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}
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if (!$present) {
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print OFILE $match;
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}
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}
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close(IFILE);
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close(OFILE);
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$/ = ''; # Browse by paragraph again
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rename $tmp_md5file, $md5file;
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msg_ap(0, " Removing $p from md5sum.txt\n");
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$st = stat("$dir/md5sum.txt");
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$size = $st->size;
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$new_blocks = size_in_blocks($st->size);
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$blocks_removed = $old_blocks - $new_blocks;
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msg_ap(0, " now $size bytes, $blocks_removed blocks removed\n");
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return $blocks_removed;
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}
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sub get_file_blocks {
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my $realfile = shift;
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my $st;
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$st = stat($realfile);
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return size_in_blocks($st->size);
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}
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sub add_packages {
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my ($p, @files, $d, $realfile, $source, $section, $name, $pkgfile, $pdir);
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my ($pkgname, $arch, $dir, $pkg);
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my $total_blocks = 0;
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my $rollback = 0;
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my $option = shift;
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if ($option =~ /--rollback/) {
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$rollback = 1;
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$dir = shift;
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} else {
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$dir = $option;
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}
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if (! -d $dir) {
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die "add_packages: $dir is not a directory ...";
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}
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$pkg = shift;
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$pkgname = $pkg;
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$pkgname =~ s/^.*://;
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$arch = $pkg;
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$arch =~ s/:.*$//g;
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msg_ap(0, "Looking at $pkg: arch $arch, package $pkgname, rollback $rollback\n");
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$/ = ''; # Browse by paragraph
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$ENV{'ARCH'} = $arch;
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if ($arch eq "source") {
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open (LIST, "$basedir/tools/apt-selection cache showsrc $pkgname |")
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|| die "Can't fork : $!\n";
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} else {
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open (LIST, "$basedir/tools/apt-selection cache show $pkgname |")
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|| die "Can't fork : $!\n";
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}
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while (defined($_ = <LIST>)) {
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undef @files;
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m/^Package: (\S+)/m and $p = $1;
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m/^Section: (\S+)/m and $section = $1;
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$source = $mirror;
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if ($arch eq "source") {
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m/^Directory: (\S+)/m and $pdir = $1;
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$source=$localdebs if $pdir=~m:local/:;
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$source=$security if $pdir=~m:updates/:;
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m/^ (\S+) (\S+) ((\S+).*dsc)/m and push(@files, "$pdir/$3");
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m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and push(@files, "$pdir/$3");
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m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and push(@files, "$pdir/$3");
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} else {
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m/^Filename: (\S+)/mi and push(@files, $1);
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$source=$localdebs if $1=~m:local/:;
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$source=$security if $1=~m:updates/:;
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}
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if ($rollback) {
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# Remove the Packages entry/entries for the specified package
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$total_blocks -= remove_Packages_entry($dir, $arch, $_);
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$total_blocks -= remove_md5_entry($dir, $arch, $_);
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foreach my $file (@files) {
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# Count how big the file is we're removing, for checking if the disc is full
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$realfile = real_file ("$source/$file");
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$total_blocks -= get_file_blocks($realfile);
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# Remove the link
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unlink ("$dir/$file") or die "Failed to remove $dir/$file\n";
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msg_ap(0, " Rollback: removing $dir/$file\n");
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}
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} else {
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$total_blocks += add_Packages_entry($dir, $arch, $_);
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$total_blocks += add_md5_entry($dir, $arch, $_);
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foreach my $file (@files) {
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# And put the file in the CD tree (with a (hard) link)
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$realfile = real_file ("$source/$file");
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if (! -e "$dir/$file") {
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# Count how big the file is, for checking if the disc
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# is full. ONLY do this if the file is not already
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# linked in - consider binary-all packages on a
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# multi-arch disc
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$total_blocks += get_file_blocks($realfile);
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$total_blocks += good_link ($realfile, "$dir/$file");
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msg_ap(0, " Linked $dir/$file\n");
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} else {
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msg_ap(0, " $dir/$file already linked in\n");
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}
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}
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}
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}
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close LIST or die "Something went wrong with apt-cache : $@ ($!)\n";
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msg_ap(0, " size $total_blocks\n");
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$/ = $old_split; # Return to line-orientation
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return $total_blocks;
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}
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1;
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