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#
# Sbuild.pm: library for sbuild
# Copyright © 2005 Ryan Murray <rmurray@debian.org>
# Copyright © 2005-2008 Roger Leigh <rleigh@debian.org
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
#######################################################################
package Sbuild;
use Sbuild::Sysconfig;
use strict;
use warnings;
use POSIX;
use FileHandle;
use Filesys::Df qw();
use Time::Local;
BEGIN {
use Exporter ();
our (@ISA, @EXPORT);
@ISA = qw(Exporter);
@EXPORT = qw($debug_level $devnull version_less version_lesseq
version_eq version_compare split_version
binNMU_version parse_date isin copy dump_file
check_packages help_text version_text usage_error
send_mail debug df);
}
our $devnull;
my $opt_correct_version_cmp = 1;
our $debug_level = 0;
BEGIN {
# A file representing /dev/null
if (!open($devnull, '+<', '/dev/null')) {
die "Cannot open /dev/null: $!\n";;
}
}
sub version_less ($$);
sub version_lesseq ($$);
sub version_eq ($$);
sub version_compare ($$$);
sub do_version_cmp ($$);
sub order ($);
sub version_cmp_single ($$);
sub split_version ($);
sub binNMU_version ($$$);
sub parse_date ($);
sub isin ($@);
sub copy ($);
sub dump_file ($);
sub check_packages ($$);
sub help_text ($$);
sub version_text ($);
sub usage_error ($$);
sub debug (@);
sub version_less ($$) {
my $v1 = shift;
my $v2 = shift;
return version_compare( $v1, "<<", $v2 );
}
sub version_lesseq ($$) {
my $v1 = shift;
my $v2 = shift;
return version_compare( $v1, "<=", $v2 );
}
sub version_eq ($$) {
my $v1 = shift;
my $v2 = shift;
return version_compare( $v1, "=", $v2 );
}
sub version_compare ($$$) {
my $v1 = shift;
my $rel = shift;
my $v2 = shift;
# If we're trying to compare versions against a provided package,
# always return "not satisfied", forcing an install attempt.
if ($v1 eq "=*=PROVIDED=*=") {
return 0;
}
if ($Sbuild::opt_correct_version_cmp) {
system "dpkg", "--compare-versions", $v1, $rel, $v2;
return $? == 0;
}
else {
if ($rel eq "=" || $rel eq "==") {
return $v1 eq $v2;
}
elsif ($rel eq "<<") {
return do_version_cmp( $v1, $v2 );
}
elsif ($rel eq "<=" || $rel eq "<") {
return $v1 eq $v2 || do_version_cmp( $v1, $v2 );
}
elsif ($rel eq ">=" || $rel eq ">") {
return !do_version_cmp( $v1, $v2 );
}
elsif ($rel eq ">>") {
return $v1 ne $v2 && !do_version_cmp( $v1, $v2 );
}
else {
warn "version_compare called with bad relation '$rel'\n";
return $v1 eq $2;
}
}
}
sub do_version_cmp ($$) {
my($versa, $versb) = @_;
my($epocha,$upstra,$reva);
my($epochb,$upstrb,$revb);
my($r);
($epocha,$upstra,$reva) = split_version($versa);
($epochb,$upstrb,$revb) = split_version($versb);
# compare epochs
return 1 if $epocha < $epochb;
return 0 if $epocha > $epochb;
# compare upstream versions
$r = version_cmp_single( $upstra, $upstrb );
return $r < 0 if $r != 0;
# compare Debian revisions
$r = version_cmp_single( $reva, $revb );
return $r < 0;
}
sub order ($) {
for ($_[0])
{
/\~/ and return -1;
/\d/ and return 0;
/[a-z]/i and return ord;
return (ord) + 256;
}
}
sub version_cmp_single ($$) {
my($versa, $versb) = @_;
my($a,$b,$lena,$lenb,$va,$vb,$i);
for(;;) {
# compare non-numeric parts
$versa =~ /^([^\d]*)(.*)/; $a = $1; $versa = $2;
$versb =~ /^([^\d]*)(.*)/; $b = $1; $versb = $2;
$lena = length($a);
$lenb = length($b);
for( $i = 0; $i < $lena || $i < $lenb; ++$i ) {
$va = $i < $lena ? order(substr( $a, $i, 1 )) : 0;
$vb = $i < $lenb ? order(substr( $b, $i, 1 )) : 0;
return $va - $vb if $va != $vb;
}
# compare numeric parts
$versa =~ /^(\d*)(.*)/; $a = $1; $a ||= 0; $versa = $2;
$versb =~ /^(\d*)(.*)/; $b = $1; $b ||= 0; $versb = $2;
return $a - $b if $a != $b;
return 0 if !$versa && !$versb;
if (!$versa) {
return +1 if order(substr( $versb, 0, 1 ) ) < 0;
return -1;
}
if (!$versb) {
return -1 if order(substr( $versa, 0, 1 ) ) < 0;
return +1;
}
}
}
sub split_version ($) {
my($vers) = @_;
my($epoch,$revision) = (0,"");
if ($vers =~ /^(\d+):(.*)/) {
$epoch = $1;
$vers = $2;
}
if ($vers =~ /(.*)-([^-]+)$/) {
$revision = $2;
$vers = $1;
}
return( $epoch, $vers, $revision );
}
sub binNMU_version ($$$) {
my $v = shift;
my $binNMUver = shift;
my $append_to_version = shift;
my $ver = $v;
if (defined($append_to_version) && $append_to_version) {
$ver .= $append_to_version;
}
if (defined($binNMUver) && $binNMUver) {
$ver .= "+b$binNMUver";
}
return $ver;
}
my %monname = ('jan', 0, 'feb', 1, 'mar', 2, 'apr', 3, 'may', 4, 'jun', 5,
'jul', 6, 'aug', 7, 'sep', 8, 'oct', 9, 'nov', 10, 'dec', 11 );
sub parse_date ($) {
my $text = shift;
return 0 if !$text;
die "Cannot parse date: $text\n"
if $text !~ /^(\d{4}) (\w{3}) (\d+) (\d{2}):(\d{2}):(\d{2})$/;
my ($year, $mon, $day, $hour, $min, $sec) = ($1, $2, $3, $4, $5, $6);
$mon =~ y/A-Z/a-z/;
die "Invalid month name $mon" if !exists $monname{$mon};
$mon = $monname{$mon};
return timegm($sec, $min, $hour, $day, $mon, $year);
}
sub isin ($@) {
my $val = shift;
return grep( $_ eq $val, @_ );
}
sub copy ($) {
my $r = shift;
my $new;
if (ref($r) eq "HASH") {
$new = { };
foreach (keys %$r) {
$new->{$_} = copy($r->{$_});
}
}
elsif (ref($r) eq "ARRAY") {
my $i;
$new = [ ];
for( $i = 0; $i < @$r; ++$i ) {
$new->[$i] = copy($r->[$i]);
}
}
elsif (!ref($r)) {
$new = $r;
}
else {
die "unknown ref type in copy\n";
}
return $new;
}
sub dump_file ($) {
my $file = shift;
if (-r "$file" &&
open(SOURCES, "<$file")) {
print " ┌────────────────────────────────────────────────────────────────────────\n";
while (<SOURCES>) {
chomp;
print " │$_\n";
}
print " └────────────────────────────────────────────────────────────────────────\n";
close(SOURCES) or print "Failed to close $file\n";
} else {
print "W: Failed to open $file\n";
}
}
# set and list saved package list (used by sbuild-checkpackages)
sub check_packages ($$) {
my $chroot = shift;
my $mode = shift;
my $package_checklist = $chroot->get_conf('PACKAGE_CHECKLIST');
my $chroot_dir = $chroot->get('Location');
my (@status, @ref, @install, @remove);
if (! open STATUS, "grep-status -F Status -s Package ' installed' '$chroot_dir/var/lib/dpkg/status' | awk '{print \$2}' |" ) {
print STDERR "Can't read dpkg status file in chroot: $!\n";
return 1;
}
while (<STATUS>) {
chomp;
push @status, $_;
}
if (! close STATUS) {
print STDERR "Error reading dpkg status file in chroot: $!\n";
return 1;
}
@status = sort @status;
if (!@status) {
print STDERR "dpkg status file is empty\n";
return 1;
}
if ($mode eq "set") {
if (! open WREF, "> $chroot_dir/$package_checklist") {
print STDERR "Can't write reference status file $chroot_dir/$package_checklist: $!\n";
return 1;
}
foreach (@status) {
print WREF "$_\n";
}
if (! close WREF) {
print STDERR "Error writing reference status file: $!\n";
return 1;
}
} else { # "list"
if (! open REF, "< $chroot_dir/$package_checklist") {
print STDERR "Can't read reference status file $chroot_dir/$package_checklist: $!\n";
return 1;
}
while (<REF>) {
chomp;
push @ref, $_;
}
if (! close REF) {
print STDERR "Error reading reference status file: $!\n";
return 1;
}
@ref = sort @ref;
if (!@ref) {
print STDERR "Reference status file is empty\n";
return 1;
}
print "DELETE ADD\n";
print "──────────────────────────────────────\n";
my $i = 0;
my $j = 0;
while ($i < scalar @status && $j < scalar @ref) {
my $c = $status[$i] cmp $ref[$j];
if ($c < 0) {
# In status, not reference; remove.
print "$status[$i]\n";
$i++;
} elsif ($c > 0) {
# In reference, not status; install.
print " $ref[$j]\n";
$j++;
} else {
# Identical; skip.
$i++; $j++;
}
}
# Print any remaining elements
while ($i < scalar @status) {
print "$status[$i]\n";
$i++;
}
while ($j < scalar @ref) {
print " $ref[$j]\n";
$j++;
}
}
}
sub help_text ($$) {
my $section = shift;
my $page = shift;
system("/usr/bin/man", "$section", "$page");
exit 0;
}
sub version_text ($) {
my $program = shift;
print <<"EOF";
$program (Debian sbuild) $Sbuild::Sysconfig::version ($Sbuild::Sysconfig::release_date)
Written by Roman Hodek, James Troup, Ben Collins, Ryan Murray, Rick
Younie, Francesco Paolo Lovergine, Michael Banck, and Roger Leigh
Copyright © 1998-2000 Roman Hodek <roman\@hodek.net>
© 1998-1999 James Troup <troup\@debian.org>
© 2003-2006 Ryan Murray <rmurray\@debian.org>
© 2001-2003 Rick Younie <younie\@debian.org>
© 2003-2004 Francesco Paolo Lovergine <frankie\@debian.org>
© 2005 Michael Banck <mbanck\@debian.org>
© 2005-2008 Roger Leigh <rleigh\@debian.org>
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
EOF
exit 0;
}
# Print an error message about incorrect command-line options
sub usage_error ($$) {
my $program = shift;
my $message = shift;
print STDERR "E: $message\n";
print STDERR "I: Run “$program --help” to list usage example and all available options\n";
exit 1;
}
sub send_mail {
my $conf = shift;
my $to = shift;
my $subject = shift;
my $file = shift;
local( *MAIL, *F );
if (!open( F, "<$file" )) {
warn "Cannot open $file for mailing: $!\n";
return 0;
}
local $SIG{'PIPE'} = 'IGNORE';
if (!open( MAIL, "|" . $conf->get('MAILPROG') . " -oem $to" )) {
warn "Could not open pipe to " . $conf->get('MAILPROG') . ": $!\n";
close( F );
return 0;
}
print MAIL "From: " . $conf->get('MAILFROM') . "\n";
print MAIL "To: $to\n";
print MAIL "Subject: $subject\n";
print MAIL "Content-Type: text/plain; charset=UTF-8\n";
print MAIL "Content-Transfer-Encoding: 8bit\n";
print MAIL "\n";
while( <F> ) {
print MAIL "." if $_ eq ".\n";
print MAIL $_;
}
close( F );
if (!close( MAIL )) {
warn $conf->get('MAILPROG') . " failed (exit status $?)\n";
return 0;
}
return 1;
}
# Note: split to stderr
sub debug (@) {
# TODO: Add debug level checking.
if ($debug_level) {
print STDERR "D: ", @_;
}
}
sub df {
my $dir = shift;
my $stat = Filesys::Df::df($dir);
return $stat->{bfree} if (defined($stat));
# This only happens if $dir was not a valid file or directory.
return 0;
}
1;
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