| Current File : //usr/bin/X11/who-permits-upload |
#!/usr/bin/perl
# who-permits-upload - Retrieve permissions granted to Debian Maintainers (DM)
# Copyright (C) 2012 Arno Töll <arno@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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
use strict;
use Dpkg::Control;
use LWP::UserAgent;
use Encode::Locale;
use Encode;
use Getopt::Long;
use constant {
TYPE_PACKAGE => "package",
TYPE_UID => "uid",
TYPE_SPONSOR => "sponsor"
};
use constant { SPONSOR_FINGERPRINT => 0, SPONSOR_NAME => 1 };
use List::Util qw(first);
our $DM_URL = "https://ftp-master.debian.org/dm.txt";
our $KEYRING
= "/usr/share/keyrings/debian-keyring.gpg:/usr/share/keyrings/debian-maintainers.gpg";
our $TYPE = "package";
our $GPG = first { !system('sh', '-c', "command -v $_ >/dev/null 2>&1") }
qw(gpg2 gpg);
our ($HELP, @ARGUMENTS, @DM_DATA, %GPG_CACHE);
binmode STDIN, ':encoding(console_in)';
binmode STDOUT, ':encoding(console_out)';
binmode STDERR, ':encoding(console_out)';
=encoding utf8
=head1 NAME
who-permits-upload - look-up Debian Maintainer access control lists
=head1 SYNOPSIS
B<who-permits-upload> [B<-h>] [B<-s> I<keyring>] [B<-d> I<dm_url>] [B<-s> I<search_type>] I<query> [I<query> ...]
=head1 DESCRIPTION
B<who-permits-upload> looks up the given Debian Maintainer (DM) upload permissions
from ftp-master.debian.org and parses them in a human readable way. The tool can
search by DM name, sponsor (the person who granted the permission) and by package.
=head1 OPTIONS
=over 4
=item B<--dmfile=>I<dm_url>, B<-d> I<dm_url>
Retrieve the DM permission file from the supplied URL. When this option is not
present, the default value I<https://ftp-master.debian.org/dm.txt> is used.
=item B<--help>, B<-h>
Display a usage summary and exit.
=item B<--keyring=>I<keyring>, B<-s> I<keyring>
Use the supplied GnuPG keyrings to look-up GPG fingerprints from the DM permission
file. When not present, the default Debian Developer and Maintainer keyrings are used
(I</usr/share/keyrings/debian-keyring.gpg> and
I</usr/share/keyrings/debian-maintainers.gpg>, installed by the I<debian-keyring>
package).
Separate keyrings with a colon ":".
=item B<--search=>I<search_type>, B<-s> I<search_type>
Modify the look-up behavior. This influences the
interpretation of the I<query> argument. Supported search types are:
=over 4
=item B<package>
Search for a source package name. This is also the default when B<--search> is omitted.
Since package names are unique, this will return given ACLs - if any - for a
single package.
=item B<uid>
Search for a Debian Maintainer. This should be (a fraction of) a name. It will
return all ACLs assigned to matching maintainers.
=item B<sponsor>
Search for a sponsor (i.e. a Debian Developer) who granted DM permissions. This
will return all ACLs given by the supplied developer.
Note that this is an expensive operation which may take some time.
=back
=item I<query>
A case sensitive argument to be looked up in the ACL permission file. The exact
interpretation of this argument is dependent by the B<--search> argument.
This argument can be repeated.
=back
=head1 EXIT VALUE
=over 4
=item 0Z<>
Success
=item 1Z<>
An error occurred
=item 2Z<>
The command line was not understood
=back
=head1 EXAMPLES
=over 4
=item who-permits-upload --search=sponsor arno@debian.org
Search for all DM upload permissions given by the UID "arno@debian.org". Note,
that only primary UIDs will match.
=item who-permits-upload -s=sponsor "Arno Töll"
Same as above, but use a full name instead.
=item who-permits-upload apache2
Look up who gave upload permissions for the apache2 source package.
=item who-permits-upload --search=uid "Paul Tagliamonte"
Look up all DM upload permissions given to "Paul Tagliamonte".
=back
=head1 AUTHOR
B<who-permits-upload> was written by Arno Töll <arno@debian.org> and is licensed
under the terms of the General Public License (GPL) version 2 or later.
=head1 SEE ALSO
B<gpg>(1), B<gpg2>(1), B<who-uploads>(1)
S<I<https://lists.debian.org/debian-devel-announce/2012/09/msg00008.html>>
=cut
GetOptions(
"help|h" => \$HELP,
"keyring|k=s" => \$KEYRING,
"dmfile|d=s" => \$DM_URL,
"search|s=s" => \$TYPE,
);
# pop positionals
@ARGUMENTS = @ARGV;
$TYPE = lc($TYPE);
if ($TYPE eq 'package') {
$TYPE = TYPE_PACKAGE;
} elsif ($TYPE eq 'uid') {
$TYPE = TYPE_UID;
} elsif ($TYPE eq 'sponsor') {
$TYPE = TYPE_SPONSOR;
} else {
usage();
}
if ($HELP) {
usage();
}
if (not @ARGUMENTS) {
usage();
}
sub usage {
print STDERR (
"Usage: $0 [-h][-s KEYRING][-d DM_URL][-s SEARCH_TYPE] QUERY [QUERY ...]\n"
);
print STDERR "Retrieve permissions granted to Debian Maintainers (DM)\n";
print STDERR "\n";
print STDERR "-h, --help\n";
print STDERR "\t\t\tDisplay this usage summary and exit\n";
print STDERR "-k, --keyring=KEYRING\n";
print STDERR
"\t\t\tUse the supplied keyring file(s) instead of the default\n";
print STDERR "\t\t\tkeyring. Separate arguments by a colon (\":\")\n";
print STDERR "-d, --dmfile=DM_URL\n";
print STDERR "\t\t\tRetrieve DM permissions from the supplied URL.\n";
print STDERR "\t\t\tDefault is https://ftp-master.debian.org/dm.txt\n";
print STDERR "-s, --search=SEARCH_TYPE\n";
print STDERR "\t\t\tSupplied QUERY arguments are interpreted as:\n";
print STDERR
"\t\t\tpackage name when SEARCH_TYPE is \"package\" (default)\n";
print STDERR "\t\t\tDM user name id when SEARCH_TYPE is \"uid\"\n";
print STDERR "\t\t\tsponsor user id when SEARCH_TYPE is \"sponsor\"\n";
exit 2;
}
sub leave {
my $reason = shift;
chomp $reason;
print STDERR "$reason\n";
exit 1;
}
sub lookup_fingerprint {
my $fingerprint = shift;
my $uid = "";
if (exists $GPG_CACHE{$fingerprint}) {
return $GPG_CACHE{$fingerprint};
}
my @gpg_arguments;
foreach my $keyring (split(":", "$KEYRING")) {
if (!-f $keyring) {
leave("Keyring $keyring is not accessible");
}
push(@gpg_arguments, ("--keyring", $keyring));
}
push(
@gpg_arguments,
(
"--no-options", "--no-auto-check-trustdb",
"--no-default-keyring", "--list-key",
"--with-colons", encode(locale => $fingerprint)));
open(CMD, '-|', $GPG, @gpg_arguments) || leave "$GPG: $!\n";
binmode CMD, ':utf8';
while (my $l = <CMD>) {
if ($l =~ /^pub/) {
$uid = $l;
# Consume the rest of the output to avoid a potential SIGPIPE when closing CMD
my @junk = <CMD>;
last;
}
}
my @fields = split(":", $uid);
$uid = $fields[9];
close(CMD)
|| leave("gpg returned an error looking for $fingerprint: " . ($? >> 8));
$GPG_CACHE{$fingerprint} = $uid;
return $uid;
}
sub parse_data {
my $raw_data = shift;
my $parser
= Dpkg::Control->new(type => CTRL_UNKNOWN, allow_duplicate => 1);
open(my $fh, '+<:utf8', \$raw_data)
|| leave('unable to read dm data: ' . $!);
my @dm_data = ();
while ($parser->parse($fh)) {
foreach my $package (split(/,/, $parser->{Allow})) {
if ($package =~ m/([a-z0-9\+\-\.]+)\s+\((\w+)\)/s) {
my @package_row = (
$1, $parser->{Fingerprint},
$parser->{Uid}, $2, SPONSOR_FINGERPRINT
);
push(@dm_data, \@package_row);
}
}
}
return @dm_data;
}
sub find_matching_row {
my $pattern = shift;
my $type = shift;
my @return_rows;
foreach my $package (@DM_DATA) {
# $package is an array ref in the format
# (package, dm_fingerprint, dm_uid, sponsor_fingerprint callback)
push(@return_rows, $package)
if ($type eq TYPE_PACKAGE && $pattern eq $package->[0]);
push(@return_rows, $package)
if ($type eq TYPE_UID && $package->[2] =~ m/$pattern/);
if ($type eq TYPE_SPONSOR) {
# the sponsor function is a key id so far, mark we looked it up
# already
$package->[3] = lookup_fingerprint($package->[3]);
$package->[4] = SPONSOR_NAME;
if ($package->[3] =~ m/$pattern/) {
push(@return_rows, $package);
}
}
}
return @return_rows;
}
my $http = LWP::UserAgent->new;
$http->timeout(10);
$http->env_proxy;
my $response = $http->get($DM_URL);
if ($response->is_success) {
@DM_DATA = parse_data($response->content);
} else {
leave "Could not retrieve DM file: $DM_URL Server returned: "
. $response->status_line;
}
foreach my $argument (@ARGUMENTS) {
$argument = decode(locale => $argument);
my @rows = find_matching_row($argument, $TYPE);
if (not @rows) {
leave("No $TYPE matches $argument");
}
foreach my $row (@rows) {
# $package is an array ref in the format
# (package, dm_fingerprint, dm_uid, sponsor_fingerprint, sponsor_type_flag)
my $sponsor = $row->[3];
if ($row->[4] != SPONSOR_NAME) {
$row->[3] = lookup_fingerprint($row->[3]);
}
printf("Package: %s DM: %s Sponsor: %s\n",
$row->[0], $row->[2], $row->[3]);
}
}