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|
#!/usr/bin/perl -w
use strict;
# $Id: debget,v 1.15 2001/02/14 05:04:07 roderick Exp $
#
# Roderick Schertler <roderick@argon.org>
# Copyright (C) 1998 Roderick Schertler
#
# 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.
#
# For a copy of the GNU General Public License write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# A full spec is a list ref:
#
# [host, initial-directory, directory, RE]
#
# This specifies that files in host:initial-directory/directory which
# match the RE are to be downloaded. These are coalesced by host and
# initial-directory leaving specs, which are just the final two elements.
# XXX
# - download the *.dsc, then skip downloading files which are already
# present locally
# - add --clean (see CVS diffs for original documentation)
# - don't install all produced packages if she gave binary package
# names to download
# - check out apt-cache
use Getopt::Long ();
use Net::FTP ();
use Proc::WaitStat qw(waitstat waitstat_die);
(my $Me = $0) =~ s-.*/--;
my $Exit = 0;
my # new line required for makemaker
$VERSION = '1.3';
use vars qw(%O);
%O = (
'arch' => undef,
'binary' => 0,
'build' => undef,
'debug' => 0,
'dir' => 'debian',
'dist' => 'unstable',
'host' => 'ftp.debian.org',
'install' => undef,
'no' => 0,
'no-config' => 0,
'no-download-re' => [],
'no-download-tar' => 0,
'no-dscverify' => 0,
'no-user-config' => 0,
'non-us-dir' => 'debian-non-US',
'non-us-host' => 'non-us.debian.org',
'root-build' => undef,
'root-install' => undef,
'source' => 1,
'unpack' => undef,
'verbose' => 0,
);
my @Option_spec = (
'arch=s',
'binary|b!',
'B' => sub { $O{'binary'} = 0 },
'build!',
'debug!',
'dir=s',
'dist|d=s',
'help!', # can't die from here because the code is eval()led
'host|h=s',
'install|i!',
'no|n!',
'no-config|f!',
'no-download-re=s@',
'no-download-tar!',
'no-dscverify!',
'no-user-config|F!',
'non-us-dir=s',
'non-us-host|H=s',
'root-build|r=s',
'root-install|R=s',
'source|s!',
'S' => sub { $O{'source'} = 0 },
'unpack|u!',
'verbose|v!',
'version' => sub { print "$Me version $VERSION\n"; exit },
);
# Booleans with single-letter aliases need special handling to avoid a
# bogus warning from Getopt::Long. Move the single-letter version to
# its own spec.
for (my $i = 0; $i <= $#Option_spec; $i++) {
next if ref $Option_spec[$i];
if ($Option_spec[$i] =~ s/(.*)\|(\w)!$/$1!/) {
push @Option_spec, $2 => \$O{$1};
}
}
my $Usage = <<EOF;
usage: $Me [switch]... { package | section/package | file.dsc | file.deb }...
switches:
--arch arch installation architecture, default from dpkg
-b, --binary download binary packages
-B, --nobinary don\'t download binary packages (default)
-u, --build build binary packages from source
packages and .dsc files (implies --unpack)
--debug turn debugging on
--dir dir path to debian directory, default $O{'dir'}
-d, --dist dist distribution, default $O{'dist'}
--help show this and then die
-h, --host host FTP host, default $O{'host'}
-i, --install install binary packages (implies --build)
-n, --no don\'t download anything
-f, --no-config don\'t read any config files
--no-download-re re don\'t download files which match regexp re
--no-download-tar don\'t download *.tar.gz files
--no-dscverify don\'t run dscverify before unpacking
-F, --no-user-config don\'t read the user\'s config file
--non-us-dir dir path to non-US directory, default $O{'non-us-dir'}
-H, --non-us-host host non-US FTP host, default $O{'non-us-host'}
-r, --root-build cmd use cmd to become root to build (see docs)
-R, --root-install cmd use cmd to become root to install (see docs)
-s, --source download source packages (default)
-S, --nosource don\'t download source packages
--unpack unpack source packages and .dsc files
-v, --verbose be verbose
--version print the version and exit
Use section/package (eg, base/dpkg or non-free/games/quake2) for packages
which aren\'t in the available file, or for which $Me guesses the section
wrong.
See the man page or \`perldoc $Me\' for the full documentation.
EOF
sub xwarndie_mess {
my @mess = ("$Me: ", @_);
$mess[$#mess] =~ s/:$/: $!\n/; # XXX loses if it's really /:\n/
return @mess;
}
sub xdie {
die xwarndie_mess @_;
}
sub xwarn {
if (@_ && $_[0] eq '-noerror') {
shift;
}
else {
$Exit ||= 1;
}
warn xwarndie_mess @_;
}
sub usage {
xwarn @_ if @_;
die $Usage;
}
sub debug {
print "debug: ", @_, "\n" if $O{'debug'};
}
sub verbose {
print @_, "\n" if $O{'verbose'};
}
sub show_invocation {
my ($s, @a) = @_;
debug "$s(" . join(', ', map { defined $_ ? $_ : '(undef)' } @a) . ")";
}
sub show_return {
my ($s, @a) = @_;
debug "$s() returning "
. join(', ', map { defined $_ ? $_ : '(undef)' } @a);
return @a;
}
# Uniqify the give list refs, based on stringwise list contents joined
# by \0.
sub uniq_lref {
my @l = @_;
my %seen;
return grep { !$seen{join "\0", @$_}++ } @l;
}
sub find_prog {
my ($msg, @prog) = @_;
my $path = defined $ENV{PATH} ? $ENV{PATH} : ':/bin:/usr/bin';
for my $prog (@prog) {
for my $dir (split /:/, $path, -1) {
$dir = '.' if $dir eq '';
$dir = '' if $dir eq '/';
return $prog if -x "$dir/$prog" && -f _;
}
}
xdie "can't find a program $msg, tried: @prog\n";
}
sub dirents {
my $dir = shift;
local *DIR;
opendir DIR, $dir
or xdie "can't opendir $dir:";
my @ents = grep { $_ ne '.' && $_ ne '..' } readdir DIR;
closedir DIR
or xdie "error running closedir on $dir:";
return @ents;
}
sub net_warndie_mess {
my $cmd = shift;
my $text = join '', @_;
my $code = $cmd->code;
my $message = $cmd->message;
chomp $message;
return "$text ($code $message)\n";
}
sub net_warn {
xwarn net_warndie_mess @_;
}
sub net_die {
xdie net_warndie_mess @_;
}
# Getopt::Long has some really awful defaults. This function loads it
# then configures it to use more sane settings.
sub getopt;
sub configure_getopt {
Getopt::Long->import(2.11);
*getopt = \&Getopt::Long::GetOptions;
# I'm setting this environment variable lest he sneaks more bad
# defaults into the module.
local $ENV{POSIXLY_CORRECT} = 1;
Getopt::Long::config qw(
default
no_autoabbrev
no_getopt_compat
require_order
bundling
no_ignorecase
);
}
sub do_file {
my $file = shift;
debug "do $file";
# XXX Need to fix Perl to be able to detect if the file was
# unreadable or the like.
do $file;
$@ and xdie "error in $file: $@";
}
# Return the host/dir that should be used for a file in DIST.
sub host_dir {
my $sec1 = shift;
return $sec1 =~ /^non-US/i
? ($O{'non-us-host'}, $O{'non-us-dir'})
: ($O{'host'}, $O{'dir'});
}
# Return the installation architecture.
sub arch {
if (!defined $O{'arch'}) {
chomp($O{'arch'} = `dpkg --print-installation-architecture`);
waitstat_die $?, 'dpkg';
$O{'arch'} ne '' or xdie "dpkg didn't print the architecture";
}
return $O{'arch'};
}
# Return the directory in which to find files of the give TYPE
# (source/binary) for the given DISTRIBUTION, SECTION1 and SECTION2.
sub file_dir {
my ($type, $dist, $sec1, $sec2) = @_;
$sec2 = "/$sec2" if $sec2 ne '';
if ($dist eq 'experimental') {
return 'project/experimental';
}
if ($type eq 'source') {
return "dists/$dist/$sec1/source$sec2";
}
if ($type eq 'binary') {
my $arch = arch;
return "dists/$dist/$sec1/binary-$arch$sec2";
}
xdie "invalid type `$type'";
}
sub sectionless_dist {
return $O{'dist'} eq 'experimental';
}
sub init {
configure_getopt;
# This is a bit of a hack. I have to parse the command line to
# learn whether -f or -F was given before I read the rc files, but I
# want the command line to override the settings in the rc files. I
# had used globals for the configuration until I needed to do this.
my @copy_key = qw(no-config no-user-config);
# I have to use the real %O, because @Option_spec contains references
# to it. So, set up to restore the original values except for those
# I'm checking right now.
my %orig_o = %O;
{
local @ARGV = @ARGV;
getopt \%O, @Option_spec;
}
my %new_o = %O;
@O{keys %orig_o} = values %orig_o; # use slice to retain old SVs
@O{@copy_key} = @new_o{@copy_key};
do_file '/etc/debget.rc' unless $O{'no-config'};
do_file "$ENV{HOME}/.debget.rc"
unless $O{'no-config'} || $O{'no-user-config'};
getopt \%O, @Option_spec or usage;
usage if $O{'help'};
$| = 1 if $O{'debug'};
}
# Return the actual package name, section code and source package for
# PACKAGE. If USER_PACKAGE is given, it's the package the user named
# which actually led to this package. If NO_ERROR is true, return
# nothing rather than dying if no answer can be found.
#
# Someday we will always be able to find the source package for a given
# binary. With the info currently available this isn't the case because
# there's no sure way to know what section the source is in.
{
my %cache;
sub query_package; # needed for paren-less recursive invocation
sub query_package {
show_invocation 'query_package', @_;
my ($package, $user_package, $no_error) = @_;
my ($user_section);
if ($package =~ s-(.*)/--) {
$user_section = $1;
}
if (!$cache{$package}) {
my ($sec, $source);
# The user specified the section on the command line, use hers.
if (defined $user_section) {
debug "using user-specified section";
$sec = $user_section;
# Recurse to get the source, but if it isn't there (it
# probably isn't, that's probably why she supplied the
# section) just assume it's the same.
$source = (query_package $package, $user_package, 1)[2];
$source = $package if !defined $source;
}
else {
verbose "dpkg --print-avail $package";
my $s = `dpkg --print-avail $package`;
waitstat_die $?, 'dpkg';
# First choice, get the section from the available info.
if ($s =~ /^Section\s*:\s*(\S+)/im) {
$sec = $1;
}
# Under some circumstances the section field isn't present
# in the available record (probably from a control file
# without this info and the package not in the packages
# files most recently used to update the available file).
# In this case try to infer it from the file name.
#
# dists/stable/main/binary-i386/interpreters/perl_5.004.04-6.deb
elsif ($s =~ m#^Filename\s*:\s*
dists/[^/]+/([^/]+)/binary-[^/]+/([^/]+)#xim) {
$sec = $1 eq 'main' ? $2 : "$1/$2";
}
# If this package wasn't explicitly named by the user (that
# is, it's the source for one that was), fall back to using
# the section for the package which actually was specified.
elsif (defined $user_package
and my @ret = query_package $user_package, undef, 1) {
$ret[0] = $package;
xwarn -noerror, "section for $package unknown,",
" using $ret[1] (from $user_package)\n"
unless sectionless_dist;
$cache{$package} = [@ret];
return show_return 'query_package', @ret;
}
# Don't require a section for some dists.
elsif (sectionless_dist && !$no_error) {
$sec = '';
# Try to get the source, but if it isn't there just use
# the package name.
$source = (query_package $package, $user_package, 1)[2];
$source = $package if !defined $source;
}
# Otherwise choke. The user has to specify the section on
# the command line.
else {
return show_return 'query_dpkg' if $no_error;
xdie "section for $package",
defined $user_package
? " (source for $user_package)"
: "",
" unknown, specify it",
" (eg `base/dpkg' or `non-free/games/quake2')\n";
}
$source = $s =~ /^Source\s*:\s*(\S+)/im ? $1 : $package;
}
$cache{$package} = [$package, $sec, $source];
}
return show_return 'query_package', @{ $cache{$package} } ;
} }
# Get the section code for PACKAGE and split it up into distribution,
# section and package, returning all three. If USER_PACKAGE is given,
# it's the package the user named which actually led to this package.
sub package_section {
show_invocation 'package_section', @_;
my ($package, $user_package) = @_;
my ($sec1, $sec2);
($package, $sec2) = query_package $package, $user_package;
# non-US
# non-US/non-free
if ($sec2 =~ s#^non-US(/|$)##) {
# no subsections
$sec1 = 'non-US/' . ($sec2 || 'main');
$sec2 = '';
}
# games
# non-free/graphics
else {
$sec1 = ($sec2 =~ s-(.*)/--) ? $1 : 'main';
}
return show_return 'package_section', $sec1, $sec2, $package;
}
# Return the source package for PACKAGE. If USER_PACKAGE is given, it's
# the package the user named which actually led to this package.
sub package_source {
show_invocation 'package_source', @_;
my ($package, $user_package) = @_;
my $source = (query_package $package, $user_package)[2];
return show_return 'package_source', $source;
}
# Return the full file specs which should be downloaded for PACKAGE.
sub make_full_specs {
my $orig_package = shift;
my (@ret, $sec1, $sec2, $package);
($sec1, $sec2, $package) = package_section $orig_package;
if ($O{'source'}) {
my ($s1, $s2, $p) = package_section package_source($package),
$orig_package;
push @ret, [host_dir($s1),
file_dir('source', $O{'dist'}, $s1, $s2),
"^\Q$p\E_.*\\.(dsc|tar\\.gz|diff\\.gz)\$"];
}
if ($O{'binary'}) {
my $arch = arch;
push @ret, [host_dir($sec1),
file_dir('binary', $O{'dist'}, $sec1, $sec2),
"^\Q$package\E_[^_]+(_(\Q$arch\E|all))?\\.deb\$"];
}
return @ret;
}
# Run nlst via FTP on directory DIR, return the file names (without
# directory).
{
my %cache;
sub ls {
my ($ftp, $dir) = @_;
if (!$cache{$ftp}{$dir}) {
verbose "ls $dir";
my $rls = $ftp->ls($dir)
or net_die $ftp, "error running ls for $dir";
# Some implementations return just the base names, some include
# the directory. Strip the directories if they're there.
for (@$rls) {
s-.*/--;
}
$cache{$ftp}{$dir} = $rls;
}
return @{ $cache{$ftp}{$dir} };
} }
# Take an FTP connection and a SPEC and return the actual files which
# should be downloaded.
sub glob_spec {
my ($ftp, $spec) = @_;
my ($dir, $re) = @$spec;
show_invocation 'glob_spec', $dir, $re;
my @file = map { "$dir/$_" } grep { /$re/ } ls $ftp, $dir;
if (!@file) {
xwarn "no files in $dir match /$re/\n";
}
return @file;
}
# Return true if I'm allowed to download a file named FILE.
sub allow_download {
my ($file) = @_;
return 0 if $file =~ /\.tar\.gz$/ && $O{'no-download-tar'};
for (@{ $O{'no-download-re'} }) {
return 0 if $file =~ /$_/;
}
return 1;
}
# Connect to HOST, chdir to DIR and retrieve the files required by SPECs.
sub do_ftp {
my ($host, $dir, @spec) = @_;
my ($ftp, @got);
verbose "connect to $host";
$ftp = Net::FTP->new($host, Debug => $O{'debug'})
or xdie "can't connect to $host: $@\n";
$ftp->login or net_die $ftp, "error logging in to $host";
$ftp->binary or net_die $ftp, "error setting binary mode";
verbose "chdir $dir";
$ftp->cwd($dir) or net_die $ftp, "error doing cd to $dir";
for (@spec) {
for my $file (glob_spec $ftp, $_) {
if (!allow_download $file) {
print "# skip download of $file\n" if $O{'verbose'};
next;
}
print "get " if $O{'verbose'};
print "$file\n";
next if $O{'no'};
if ($ftp->get($file)) {
push @got, $file;
$got[-1] =~ s-.*/--;
}
else {
net_warn $ftp, "error getting $file";
}
}
}
verbose "disconnect from $host";
$ftp->quit or net_warn $ftp, "error closing FTP session to $host";
return @got;
}
# Run the given COMMAND like system(), but don't output the stdout
# unless verbose mode is on.
sub run {
my @cmd = @_;
my ($ret);
if (!$O{'verbose'}) {
open SAVEOUT, '>&STDOUT' or xdie "can't dup stdout:"
unless defined fileno SAVEOUT;
open STDOUT, '>/dev/null' or xdie "can't write to /dev/null:";
}
$ret = system @cmd;
open STDOUT, '>&SAVEOUT' or xdie "can't redup stdout:"
if !$O{'verbose'};
return $ret;
}
# Using SUPROG run the given COMMAND, with special handling for an
# SUPROG of su.
sub root_run {
my ($su, @cmd) = @_;
my (@arg);
# This is more complicated than it needs to be because of GNU's
# accursed argument reordering. If you have an argument to the
# command which looks like a switch GNU's su will act on it unless
# you use -- to stop option processing or set $POSIXLY_CORRECT. I
# don't want to set $POSIXLY_CORRECT because that will affect the
# behavior of the command run. Using -- on its own doesn't work
# because the su which comes with the shadow tools (packaged as
# secure-su) doesn't do real option processing and doesn't recognize
# it.
#
# So, I have this. I put the -- there and then remove it myself if
# necessary. With GNU su the "" arg ends up in $0. With secure-su
# the -- ends up in $0 and the "" in $1, and I shift it out of $1.
@arg = ('root', '-c', '[ -z "$1" ] && shift; exec "$@"', '--', '')
if $su eq 'su';
run $su, @arg, @cmd;
}
# Unpack the given DSC_FILE, returning the name of the directory created
# if all went well.
sub dscunpack {
my $dsc = shift;
my ($dir, $skipping);
if (!$O{'no-dscverify'}) {
verbose "dscverify $dsc";
run 'dscverify', $dsc;
if ($?) {
xwarn "non-zero exit (", waitstat $?, ") verifying $dsc,",
" skipping it\n";
if (!eval { find_prog 'x', 'dscverify' }
|| ! -f '/usr/share/keyrings/debian-keyring.gpg') {
xwarn "install the devscripts and debian-keyring packages",
" or specify --no-dscverify\n";
}
return;
}
}
$dir = $dsc;
$dir =~ s/\.dsc$//;
$dir =~ s/(_.*?)-[^\-]+/$1/;
$dir =~ s/_/-/;
print "$dir\n" unless $O{'verbose'};
# I won't actually be skipping anything unless I'm going to build or
# install.
$skipping = $O{'build'} || $O{'install'};
verbose "unpack $dsc";
run 'dpkg-source', '-x', $dsc;
if ($?) {
xwarn "non-zero exit (", waitstat $?, ") from dpkg-source",
" unpacking $dsc", $skipping ? ", skipping it" : '', "\n";
return;
}
unless (-d $dir) {
xwarn "directory $dir wasn't created by dpkg-source unpacking $dsc",
$skipping ? ", skipping it" : '', "\n";
return;
}
return $dir;
}
# Build the package which is in DIRECTORY, returning the names of the
# generated binary packages if all went well.
sub build {
my $dir = shift;
my ($skipping, %before, @deb);
verbose "$dir/debian/rules build";
run 'sh', '-c', 'cd "$1" && debian/rules build', 'x', $dir;
if ($?) {
xwarn "non-zero exit (", waitstat $?, ") from `debian/rules build'",
" in $dir, skipping it\n";
return;
}
# Save the existing *.deb files and the age of each.
%before = map { $_ => -M $_ } grep { /\.deb$/ } dirents '.';
verbose "$dir/debian/rules binary";
root_run $O{'root-build'},
'sh', '-c', 'cd "$1" && debian/rules binary', 'x', $dir;
if ($?) {
xwarn "non-zero exit (", waitstat $?, ") from `debian/rules binary'",
" in $dir via $O{'root-build'}",
$O{'install'} ? ", skipping it" : '', "\n";
return;
}
# Find either new or updated *.deb files. XXX This is a race with other
# processes working in this directory.
@deb = grep { /\.deb$/ && (!$before{$_} || -M $_ < $before{$_}) }
dirents '.';
if (!@deb) {
xwarn "no *.deb files were produced by $dir\n";
return;
}
print join "\n", @deb, '' unless $O{'verbose'};
return @deb;
}
sub main {
my (@dsc, @src, @deb, @full_spec);
init;
# Separate .dsc and .deb files from package names. There's no way
# to give a directory name and have that mean "build the package in
# this directory" because there'd be an ambiguity (if you have a
# directory with the same name as a package).
for (@ARGV) {
if (/\.dsc$/) {
push @dsc, $_;
}
elsif (/\.deb$/) {
push @deb, $_;
}
else {
push @full_spec, make_full_specs $_;
}
}
# Automatically turn on --build/--install if .dsc/.deb were given.
$O{'build'} = 1 if @dsc && !defined $O{'build'};
$O{'install'} = 1 if @deb && !defined $O{'install'};
# Automatically turn on prerequisites.
$O{'build'} = 1 if $O{'install'} && !defined $O{'build'};
$O{'unpack'} = 1 if $O{'build'} && !defined $O{'unpack'};
# Look for the su-type commands if necessary, before starting
# downloads.
$O{'root-install'} = $O{'root-build'}
if defined $O{'root-build'} && !defined $O{'root-install'};
$O{'root-build'} = find_prog 'to become root to build',
qw(fakeroot sudo super su)
if $O{'build'} && !defined $O{'root-build'};
$O{'root-install'} = find_prog 'to become root to install',
qw(sudo super su)
if $O{'install'} && !defined $O{'root-install'};
# Make sure there's something to do.
unless (@dsc || @deb) {
$O{'source'} || $O{'binary'}
or xdie "neither source nor binary packages",
" are being downloaded\n";
@ARGV or usage "no packages or files specified\n";
}
# Uniqify the full specs because, eg, multiple packages can come
# from the same source.
@full_spec = uniq_lref @full_spec;
# Split the full specs up into specs grouped by host/directory.
my %work;
for (@full_spec) {
my ($host, $dir, @spec) = @$_;
push @{ $work{$host}{$dir} }, \@spec;
}
# For each host/directory pair, connect and download the given
# specs.
for my $host (sort keys %work) {
for my $dir (sort keys %{ $work{$host} }) {
for (do_ftp $host, $dir, @{ $work{$host}{$dir} }) {
if (/\.dsc$/) {
push @dsc, $_;
}
elsif (/\.deb$/) {
push @deb, $_;
}
}
}
}
if ($O{'unpack'} && @dsc) {
for (@dsc) {
push @src, dscunpack $_;
}
}
if ($O{'build'} && @src) {
for (@src) {
push @deb, build $_;
}
}
if ($O{'install'} && @deb) {
root_run $O{'root-install'}, 'dpkg', '-i', @deb;
if ($?) {
xwarn "non-zero exit (", waitstat $?,
") running dpkg via $O{'root-install'} to install @deb\n";
}
}
return 0;
}
$Exit = main || $Exit;
$Exit = 1 if $Exit and not $Exit % 256;
exit $Exit;
__END__
=head1 NAME
debget - download source and binary Debian packages
=head1 SYNOPSIS
B<debget> [I<switch>]... { I<package> | I<section/package> | I<file>.dsc
| I<file>.deb }...
=head1 DESCRIPTION
B<debget> downloads source and binary Debian packages by name and
optionally unpacks, compiles and installs them. The default behavior
is to download the source for packages, to unpack and build F<*.dsc>
files and to install F<*.deb> files. For detailed defaults on FTP
server names and such run C<debget --help>.
B<debget> doesn't require a local copy of the F<Packages> files, instead it
lists directories on the FTP site to find out what versions are available.
Non-switch arguments are F<*.dsc> files, F<*.deb> files, and package
names or I<section/package>, eg B<base/dpkg> or B<non-free/games/quake2>.
There are two cases in which you've got to specify the section:
=over 4
=item -
Information about the package isn't in the local F<available> file (as
shown by C<dpkg --print-avail>), or the information there is wrong.
=item -
You're downloading a source package which doesn't generate a binary
package of the same name. Normally B<debget> infers the correct
source package to download based on the C<dpkg --print-avail> output.
(Eg, if you say to download the source for B<perl-base>, it will
really download the B<perl> sources.) This isn't possible if the
source package doesn't have an F<available> file entry (which is the
case when the source package doesn't generate a binary package of the
same name). In this case B<debget> will use the section for the
package which you specified (B<perl-base> in this case). If the
section for that package isn't available, or if it's not the same as
the section for the source package, you have to specify the section
yourself.
=back
To handle either of these cases, specify the package with the section
prepended, as it would appear in the F<available> file. Eg, B<base/dpkg>
or B<non-free/games/quake2>.
=head1 OPTIONS
=over 4
=item B<--arch> I<arch>
Specify the installation architecture (used to find binary packages).
The default is the output of C<dpkg --print-installation-architecture>.
=item B<-b>, B<--binary>
Download binary packages. The default is not to download them.
=item B<-B>, B<--nobinary>
Don't download binary packages. This is the default.
=item B<-u>, B<--build>
Build downloaded source packages. This implies B<--unpack>. B<--build>
is turned off by default, but it is turned on if you specify any F<*.dsc>
or F<*.deb> files on the command line.
=item B<--debug>
Turn debugging on.
=item B<--dir> I<dir>
Specify the path to the top of the Debian hierarchy on the primary FTP
server.
=item B<-d> I<dist>, B<--dist> I<dist>
Specify the distribution from which to download packages. The
default is B<unstable>. You can use the name of any subdirectory
in the F<dists> directory in the Debian archive, or B<experimental>
(which is special-cased).
=item B<--help>
Show the usage message and die.
=item B<-h> I<host>, B<--host> I<host>
Specify the host name of the primary FTP server.
=item B<-i>, B<--install>
Install binary packages. This turns on B<--unpack> and B<--build>, so
specifying it will cause B<debget> to install just about everything you
mention on the command line. Packages will be downloaded, unpacked, built,
and installed, F<*.dsc> files will be unpacked, built, and installed, and
F<*.deb> files will be installed.
=item B<-n>, B<--no>
Go through the motions, but don't actually download any packages.
=item B<-f>, B<--no-config>
Don't process either /etc/debget.rc or ~/.debget.rc.
=item B<--no-download-re> I<re>
Don't download files whose name match the Perl regexp I<re>. This
option can be specified multiple times.
=item B<--no-download-tar>
Don't download F<*.tar.gz> files. This is normally used when downloading
sources, when specified you'll just fetch the F<*.diff.gz> and F<*.dsc>
files.
=item B<--no-dscverify>
Don't run B<dscverify> before unpacking sources. B<dscverify> checks
that the F<.dsc> file is signed by a Debian developer and that the MD5
sums and file sizes given in it match the files about to be unpacked.
These are good things, so B<debget> will try to run B<dscverify> by
default. The B<dscverify> program is in the F<devscripts> package.
=item B<-F>, B<--no-user-config>
Don't process ~/.debget.rc.
=item B<--non-us-dir> I<dir>
Specify the path to the top of the Debian hierarchy for non-US packages.
=item B<-H> I<host>, B<--non-us-host> I<host>
Specify the host name of the non-US FTP server.
=item B<-r> I<cmd>, B<--root-build> I<cmd>
Use I<cmd> to become root when building a package from source. The
default is the first of F<fakeroot>, F<sudo>, F<super>, or F<su> which
is present on the system.
=item B<-R> I<cmd>, B<--root-install> I<cmd>
Use I<cmd> to become root when installing a package. The default is
what you gave for B<--root-build> if you specified anything, otherwise
the first of F<sudo>, F<super>, or F<su> which is present on the system.
=item B<-s>, B<--source>
Download source packages. This is the default.
=item B<-S>, B<--nosource>
Don't download source packages. The default is to download them.
=item B<--unpack>
Unpack downloaded source packages.
=item B<-v>, B<--verbose>
Be verbose.
=item B<--version>
Print the version number and exit.
=back
=head1 CONFIGURATION FILES
The default behavior of B<debget> can be modified by the configuration
files F</etc/debget.rc> and F<~/.debget.rc> (unless modified by the
B<-f> or B<-F> switches). These files are processed as Perl code. They
can set these variables to control the program (with their corresponding
switches):
=over 4
=item C<$O{'arch'}>
B<--arch>
=item C<$O{'binary'}>
B<--binary>, boolean
=item C<{$O{'build'}>
B<--build>, boolean
=item C<$O{'debug'}>
B<--debug>, boolean
=item C<$O{'dir'}>
B<--dir>
=item C<$O{'dist'}>
B<--dist>
=item C<$O{'host'}>
B<--host>
=item C<$O{'install'}>
B<--install>, boolean
=item C<$O{'no'}>
B<--no>, boolean
=item C<$O{'no-config'}>
B<--no-config>, boolean
=item C<$O{'no-download-re'}>
B<--no-download-re>, array reference
=item C<$O{'no-download-tar'}>
B<--no-download-tar>, boolean
=item C<$O{'no-dscverify'}>
B<--no-dscverify>, boolean
=item C<$O{'no-user-config'}>
B<--no-user-config>, boolean
=item C<$O{'non-us-dir'}>
B<--non-us-dir>
=item C<$O{'non-us-host'}>
B<--non-us-host>
=item C<$O{'root-build'}>
B<--root-build>
=item C<$O{'root-install'}>
B<--root-install>
=item C<$O{'source'}>
B<--source>, boolean
=item C<$O{'unpack'}>
B<--unpack>, boolean
=item C<$O{'verbose'}>
B<--verbose>, boolean
=back
Here's an example configuration file:
$O{'host'} = 'debian.terrabox.com';
$O{'verbose'} = 1;
=head1 BUGS
If you specify B<--install> all produced binary packages will be
installed, even ones you didn't specify on the command line. Eg, if
you run C<debget
--install ssh> it will install both F<ssh> and F<ssh-askpass>.
I'd like to add a B<--clean> switch which will make the program remove
intermediate files.
See F</usr/doc/debget/README.Debian> if your transfers are failing
because you need to use passive FTP or a proxy.
=head1 SEE ALSO
dselect(8), apt-get(8)
=head1 AUTHOR
Roderick Schertler <roderick@argon.org>
=cut
|