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package URPM;
use strict;
#- compare keys to avoid glitches introduced during the importation where
#- some characters may be modified on the fly by rpm --import...
sub compare_pubkeys {
my ($a, $b, %options) = @_;
my $diff = 0;
my @a = unpack "C*", $a->{content};
my @b = unpack "C*", $b->{content};
#- default options to use.
$options{start} ||= 0;
$options{end} ||= @a < @b ? scalar(@b) : scalar(@a);
$options{diff} ||= 1;
#- check element one by one, count all difference (do not work well if elements
#- have been inserted/deleted).
foreach ($options{start} .. $options{end}) {
$a[$_] != $b[$_] and ++$diff;
}
#- diff options give level to consider the key equal (a character is not always the same).
$diff <= $options{diff} ? 0 : $diff;
}
#- pare from rpmlib db.
sub parse_pubkeys {
my ($urpm, %options) = @_;
my ($block, @l, $content);
my $db = $options{db};
$db ||= URPM::DB::open($options{root});
$db->traverse_tag('name', [ 'gpg-pubkey' ], sub {
my ($p) = @_;
my $s;
foreach (split "\n", $p->description) {
$block ||= /^-----BEGIN PGP PUBLIC KEY BLOCK-----$/;
if ($block) {
my $inside_block = /^$/ ... /^-----END PGP PUBLIC KEY BLOCK-----$/;
if ($inside_block > 1) {
if ($inside_block =~ /E/) {
$urpm->{keys}{$p->version} = { $p->summary =~ /^gpg\((.*)\)$/ ? (name => $1) : @{[]},
id => $p->version,
content => $content,
};
$block = undef;
$content = '';
} else {
$content .= $_;
}
}
}
}
})
}
#- parse an armored file and import in keys hash if the key does not already exists.
sub parse_armored_file {
my ($urpm, $file, %options) = @_;
my ($block, @l, $content);
local (*F, $_);
#- read armored file.
open F, $file;
while (<F>) {
chomp;
$block ||= /^-----BEGIN PGP PUBLIC KEY BLOCK-----$/;
if ($block) {
my $inside_block = /^$/ ... /^-----END PGP PUBLIC KEY BLOCK-----$/;
if ($inside_block > 1) {
if ($inside_block =~ /E/) {
push @l, +{ content => $content };
$block = undef;
$content = '';
} else {
$content .= $_;
}
}
}
}
close F or die "unable to parse armored file $file";
#- check if key has been found, remove from list.
if ($options{only_unknown_keys}) {
@l = grep {
my $found = 0;
foreach my $k (values %{$urpm->{keys} || {}}) {
compare_pubkeys($k, $_) == 0 and $found = 1, last;
}
!$found;
} @l;
}
@l;
}
sub import_armored_file {
my ($urpm, $file, %options) = @_;
local (*F, $_);
my $block = '';
#- read armored file.
open F, $file;
while (<F>) {
my $inside_block = /^-----BEGIN PGP PUBLIC KEY BLOCK-----$/ ... /^-----END PGP PUBLIC KEY BLOCK-----$/;
if ($inside_block) {
$block .= $_;
if ($inside_block =~ /E/) {
#- import key using the given database if any else the function will open the rpmdb itself.
#- FIXME workaround for rpm 4.2 if the rpmdb is left opened, the keys content are sligtly
#- modified by algorithms...
URPM::import_pubkey(block => $block, db => $options{db}, root => $options{root})
or die "import of armored file failed";
$block = '';
}
}
}
close F or die "unable to parse armored file $file";
}
1;
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