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|
#!/usr/bin/perl
#
# extract_template.pl
#
# Create a list of all the debconf template settings contained in a
# given Debian release
#
# Copright 2020 Steve McIntyre <steve@einval.com>
#
# GPLv2+
use strict;
use warnings;
use File::Basename;
use File::stat;
use Getopt::Long;
Getopt::Long::Configure ('no_ignore_case');
Getopt::Long::Configure ('no_auto_abbrev');
my $mirror = "/srv/mirror/debian";
my $suite = "buster";
my $component = "main";
my $arch = "amd64";
my $outfile = "";
my $verbose = 0;
my $verbose_number = 1000;
my $out_fh;
my $result = GetOptions("m|mirror=s" => \$mirror,
"suite|s=s" => \$suite,
"c|component=s" => \$component,
"a|arch=s" => \$arch,
"o|out=s" => \$outfile,
"v|verbose+" => \$verbose
) or die ("Error parsing command line");
my $deb;
if ($outfile eq "") {
$out_fh = *STDOUT;
}
sub dump_entry {
my $out_fh = shift;
my $base = shift;
my $desc = shift;
my $tmp = shift;
my @long_desc = @$tmp;
my $tmpl_name = shift;
my $type = shift;
my $default = shift;
my $choices = shift;
if (!defined($default)) {
if (defined($type)) {
if ($type eq "string") {
$default = "<string>";
} elsif ($type eq "select") {
$default = "<choice>";
} elsif ($type eq "multiselect") {
$default = "<choice(s)>";
} elsif ($type eq "password") {
$default = "<password>";
} else {
$default = "<choice>";
}
} else {
print $out_fh "# Unknown type for $base $desc, $default\n";
print $out_fh "# Maybe broken template? Guessing...\n";
$type = "<choice>";
$default = "<choice>";
}
}
if (!defined($desc)) {
print $out_fh "$base: unknown desc\n";
}
if ($type ne "text" and
$type ne "error" and
$type ne "title" and
$type ne "note") {
print $out_fh "\n### $desc\n";
foreach my $dl (@long_desc) {
print $out_fh "# $dl\n";
}
if (!defined($tmpl_name)) {
print $out_fh "# Unknown tmpl_name for $base $desc, $type, $default\n";
}
print $out_fh "# d-i $tmpl_name $type $default\n";
if (defined($choices)) {
print $out_fh "# Possible choices: $choices\n";
}
}
}
sub process_deb {
my $out_fh = shift;
my $deb = shift;
my $template;
$template = `dpkg --ctrl-tarfile $deb | tar tf - | grep templates`;
chomp $template;
if ($template) {
my $base = basename($deb);
print $out_fh "\n############################\n";
print $out_fh "#### $base\n";
print $out_fh "############################\n";
open (TMPL, "dpkg --ctrl-tarfile $deb | tar xf - $template -O |")
or die "Failed to extra template from $deb: $!\n";
my $in_template = 0;
my $in_descr = 0;
my $tmpl_name;
my $type;
my $default;
my $desc;
my $choices;
my @long_desc;
while (defined (my $line = <TMPL>)) {
chomp $line;
if ($line =~ /^Template:\s*(.*)/i) {
$in_template = 1;
$tmpl_name = $1;
$in_descr = 0;
next;
}
if ($line =~ /^Type:\s*(.*)/i) {
$type = $1;
$in_descr = 0;
next;
}
if ($line =~ /^Default:\s*(.*)/i) {
$default = $1;
$in_descr = 0;
next;
}
if ($line =~ /^Choices:\s*(.*)/i) {
$choices = $1;
$in_descr = 0;
next;
}
if ($line =~ /^(Description:\s*.*)/i) {
$in_descr = 1;
$desc = $1;
next;
}
if ($line =~ /^ (.*)/i && $in_descr) {
push(@long_desc, $1);
next;
}
if ($line =~ /^Description-.*/i) {
$in_descr = 0;
next;
}
if ($line =~ /^$/ and $in_template) {
dump_entry($out_fh, $base, $desc, \@long_desc, $tmpl_name, $type, $default, $choices);
undef $desc;
undef @long_desc;
undef $tmpl_name;
undef $type;
undef $default;
undef $choices;
$in_template = 0;
}
}
close TMPL;
if ($in_template and defined($desc)) {
dump_entry($out_fh, $base, $desc, \@long_desc, $tmpl_name, $type, $default, $choices);
$in_template = 0;
}
}
}
my $num_debs = 0;
if (scalar (@ARGV)) {
# Ignore the other bits, just use the specified debs
while ($deb = shift) {
# print "Processing $deb\n";
# print "Found control tarball as $control\n";
process_deb(*STDOUT, $deb);
$num_debs++;
if ($verbose && $num_debs % $verbose_number == 0) {
print STDERR "Processed $num_debs packages OK\n";
}
}
} else {
my @inputs = ("$mirror/dists/$suite/$component/debian-installer/binary-$arch/Packages.gz",
"$mirror/dists/$suite/$component/binary-$arch/Packages.gz");
my $should_run = 0;
# If we have an output file, ONLY run if one of the input files is
# newer
if ($outfile eq "" || ! -f $outfile) {
$should_run = 1;
} else {
my $sb_out = stat($outfile);
foreach my $file (@inputs) {
if (-f $file) {
my $sb_in = stat($file);
if ($sb_in->mtime > $sb_out->mtime)
{
$should_run = 1;
}
}
}
}
if ($should_run) {
if ($outfile ne "") {
open($out_fh, ">", "$outfile.new")
or die "Can't open $outfile.new for writing: $!\n";
}
foreach my $file (@inputs) {
if ($verbose) {
print STDERR "Checking for debs in $file\n";
}
if (-f $file) {
open(PACKAGES, "zcat -f $file |")
or die "Can't read Packages file $file: $!\n";
while (defined (my $line = <PACKAGES>)) {
chomp $line;
if ($line =~ m/^Filename: (.*)/) {
process_deb($out_fh, "/$mirror/$1");
$num_debs++;
if ($verbose >= 2) {
print STDERR "Processed $1\n";
} elsif ($verbose && $num_debs % $verbose_number == 0) {
print STDERR "Processed $num_debs packages OK\n";
}
}
}
close PACKAGES;
if ($verbose) {
print STDERR "Processed $num_debs packages OK\n";
}
}
}
if ($outfile ne "") {
close $out_fh;
rename "$outfile.new", "$outfile";
}
} else {
if ($verbose) {
print STDERR "Output file $outfile is newer than input files, not running\n";
}
}
}
|
