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#!/usr/bin/perl
=head1 NAME
debconf-show - query the debconf database
=cut
sub usage {
print STDERR <<EOF;
Usage:
debconf-show packagename [...] [--db=dbname]
debconf-show --listowners [--db=dbname]
debconf-show --listdbs
EOF
exit(1);
}
=head1 SYNOPSIS
debconf-show packagename [...] [--db=dbname]
debconf-show --listowners [--db=dbname]
debconf-show --listdbs
=head1 DESCRIPTION
B<debconf-show> lets you query the debconf database in different ways.
The most common use is "debconf-show packagename", which displays all items
in the debconf database owned by a given package, and their current values.
Questions that have been asked already are prefixed with an '*'.
This can be useful as a debugging aid, and especially handy in bug reports
involving a package's use of debconf.
=head1 OPTIONS
=over 4
=item B<--db=>I<dbname>
Specify the database to query. By default, debconf-show queries the main
database.
=item B<--listowners>
Lists all owners of questions in the database. Generally an owner is
equivalent to a debian package name.
=item B<--listdbs>
Lists all available databases.
=back
=cut
use strict;
use warnings;
use Debconf::Db;
use Debconf::Template;
use Debconf::Question;
use Getopt::Long;
my $db='';
my $listowners=0;
my @packages;
my $listdbs=0;
# command options
GetOptions(
"db=s" => \$db,
"listowners" => \$listowners,
"listdbs" => \$listdbs,
) || usage();
unless ($listowners or $listdbs) {
@packages=@ARGV;
usage() unless @packages;
}
Debconf::Db->load(readonly => 'true');
my %drivers = %Debconf::DbDriver::drivers;
my $conf = Debconf::Config->config;
# Recursive function to get the config tree.
sub tree {
my $node=shift;
my $string=shift || "";
my $driver = Debconf::DbDriver->driver($node);
my $name = $driver->{name};
$string = $string.$name;
print $string."\n";
# If the node is a stack, call tree again to get the subtree.
if ($driver->isa("Debconf::DbDriver::Stack")) {
$string=$string.'/';
map { tree($_->{name},$string) } @{$driver->{stack}};
}
}
# If a specific database is given (with --db), redefine the global config
# database to use it.
if ($db) {
my $driver = $drivers{$db};
die $db.": unknown database" unless defined($driver);
$Debconf::Db::config = $driver;
}
my $qi=Debconf::Question->iterator;
if ($listdbs) {
# Display the config tree.
tree($conf);
}
elsif (@packages) {
while (my $q=$qi->iterate) {
foreach my $package (@packages) {
# Show the questions of a package.
if (grep { $package eq $_} split(/, /, $q->owners)) {
if ($q->flag("seen") eq 'true') {
print "* ";
}
else {
print " ";
}
print $q->name.":";
if ($q->type eq 'password') {
print " (password omitted)";
}
elsif (length $q->value) {
print " ".$q->value;
}
print "\n";
}
}
}
}
elsif ($listowners) {
# Show all the owners in the database.
my %seen;
while (my $q=$qi->iterate) {
foreach (split(/, /, $q->owners)) {
unless ($seen{$_}) {
print "$_\n";
$seen{$_}=1;
}
}
}
}
=head1 AUTHOR
Joey Hess <joeyh@debian.org> and Sylvain Ferriol
=cut
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