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#!/usr/bin/perl
#
# Copyright © 1996 Andy Guy <awpguy@acs.ucalgary.ca>
# Copyright © 1998 Martin Schulze <joey@infodrom.north.de>
# Copyright © 1999, 2009 Raphaël Hertzog <hertzog@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; version 2 of the License.
#
# 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, see <https://www.gnu.org/licenses/>.
use strict;
use warnings;
eval q{
pop @INC if $INC[-1] eq '.';
use Dpkg; # Dummy import to require the presence of Dpkg::*.
};
if ($@) {
warn "Missing Dpkg modules required by the FTP access method.\n\n";
exit 1;
}
use Dselect::Ftp;
# deal with arguments
my $vardir = $ARGV[0];
my $method = $ARGV[1];
my $option = $ARGV[2];
if ($option eq 'manual') {
print "Enter package file names or a blank line to finish\n";
while(1) {
print 'Enter package file name:';
my $fn = <STDIN>;
chomp $fn;
if ($fn eq '') {
exit 0;
}
if ( -f $fn ) {
system('dpkg', '--merge-avail', $fn);
} else {
print "Could not find $fn, try again\n";
}
};
};
#print "vardir: $vardir, method: $method, option: $option\n";
my $arch = qx(dpkg --print-architecture);
$arch = 'i386' if $?;
chomp $arch;
my $exit = 0;
# get info from control file
read_config("$vardir/methods/ftp/vars");
chdir "$vardir/methods/ftp";
print "Getting Packages files...(stop with ^C)\n\n";
my @pkgfiles;
my $ftp;
my $packages_modified = 0;
sub download {
foreach (@{$CONFIG{site}}) {
my $site = $_;
$ftp = do_connect(ftpsite => $_->[0],
ftpdir => $_->[1],
passive => $_->[3],
username => $_->[4],
password => $_->[5],
useproxy => $CONFIG{use_auth_proxy},
proxyhost => $CONFIG{proxyhost},
proxylogname => $CONFIG{proxylogname},
proxypassword => $CONFIG{proxypassword});
my @dists = @{$_->[2]};
PACKAGE:
foreach my $dist (@dists) {
my $dir = "$dist/binary-$arch";
my $must_get = 0;
my $newest_pack_date;
# check existing Packages on remote site
print "\nChecking for Packages file... ";
$newest_pack_date = do_mdtm ($ftp, "$dir/Packages.gz");
if (defined $newest_pack_date) {
print "$dir/Packages.gz\n";
} else {
$dir = "$dist";
$newest_pack_date = do_mdtm ($ftp, "$dir/Packages.gz");
if (defined $newest_pack_date) {
print "$dir/Packages.gz\n";
} else {
print "Couldn't find Packages.gz in $dist/binary-$arch or $dist; ignoring.\n";
print "Your setup is probably wrong, check the distributions directories,\n";
print "and try with passive mode enabled/disabled (if you use a proxy/firewall)\n";
next PACKAGE;
}
}
# we now have $dir set to point to an existing Packages.gz file
# check if we already have a Packages file (and get its date)
$dist =~ tr/\//_/;
my $file = "Packages.$site->[0].$dist";
# if not
if (! -f $file) {
# must get one
# print "No Packages here; must get it.\n";
$must_get = 1;
} else {
# else check last modification date
my @pack_stat = stat($file);
if($newest_pack_date > $pack_stat[9]) {
# print "Packages has changed; must get it.\n";
$must_get = 1;
} elsif ($newest_pack_date < $pack_stat[9]) {
print " Our file is newer than theirs; skipping.\n";
} else {
print " Already up-to-date; skipping.\n";
}
}
if ($must_get) {
-f 'Packages.gz' and unlink 'Packages.gz';
-f 'Packages' and unlink 'Packages';
my $size = 0;
TRY_GET_PACKAGES:
while (1) {
if ($size) {
print ' Continuing ';
} else {
print ' Getting ';
}
print "Packages file from $dir...\n";
eval {
if ($ftp->get("$dir/Packages.gz", 'Packages.gz', $size)) {
if (system('gunzip', 'Packages.gz')) {
print " Couldn't gunzip Packages.gz, stopped";
die 'error';
}
} else {
print " Couldn't get Packages.gz from $dir !!! Stopped.";
die 'error';
}
};
if ($@) {
$size = -s 'Packages.gz';
if (ref($ftp)) {
$ftp->abort();
$ftp->quit();
};
if (yesno ('y', "Transfer failed at $size: retry at once")) {
$ftp = do_connect(ftpsite => $site->[0],
ftpdir => $site->[1],
passive => $site->[3],
username => $site->[4],
password => $site->[5],
useproxy => $CONFIG{use_auth_proxy},
proxyhost => $CONFIG{proxyhost},
proxylogname => $CONFIG{proxylogname},
proxypassword => $CONFIG{proxypassword});
if ($newest_pack_date != do_mdtm ($ftp, "$dir/Packages.gz")) {
print ("Packages file has changed !\n");
$size = 0;
}
next TRY_GET_PACKAGES;
} else {
die 'error';
}
}
last TRY_GET_PACKAGES;
}
if (!rename 'Packages', "Packages.$site->[0].$dist") {
print " Couldn't rename Packages to Packages.$site->[0].$dist";
die 'error';
} else {
# set local Packages file to same date as the one it mirrors
# to allow comparison to work.
utime $newest_pack_date, $newest_pack_date, "Packages.$site->[0].$dist";
$packages_modified = 1;
}
}
push @pkgfiles, "Packages.$site->[0].$dist";
}
$ftp->quit();
}
}
eval {
local $SIG{INT} = sub {
die "interrupted!\n";
};
download();
};
if($@) {
$ftp->quit() if (ref($ftp));
if($@ =~ /timeout/i) {
print "FTP TIMEOUT\n";
} else {
print "FTP ERROR - $@\n";
}
$exit = 1;
};
# Don't clear if nothing changed.
if ($packages_modified) {
print <<'EOM';
It is a good idea to clear the available list of old packages.
However if you have only downloaded a Package files from non-main
distributions you might not want to do this.
EOM
if (yesno ('y', 'Do you want to clear available list')) {
print "Clearing...\n";
if (system('dpkg', '--clear-avail')) {
print 'dpkg --clear-avail failed.';
die 'error';
}
}
}
if (!$packages_modified) {
print "No Packages files was updated.\n";
} else {
foreach my $file (@pkgfiles) {
if (system('dpkg', '--merge-avail', $file)) {
print "Dpkg merge available failed on $file";
$exit = 1;
}
}
}
exit $exit;
|
