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|
#!/usr/bin/perl
#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
use strict;
use warnings;
my $target = shift @ARGV;
my $filename = shift @ARGV;
my $md5sum = shift @ARGV;
my @mirrors;
my $ok;
@ARGV > 0 or die "Syntax: $0 <target dir> <filename> <md5sum> <mirror> [<mirror> ...]\n";
sub which($) {
my $prog = shift;
my $res = `which $prog`;
$res or return undef;
$res =~ /^no / and return undef;
$res =~ /not found/ and return undef;
return $res;
}
my $md5cmd = which("md5sum");
$md5cmd or $md5cmd = which("md5");
$md5cmd or die 'no md5 checksum program found, please install md5 or md5sum';
chomp $md5cmd;
sub download
{
my $mirror = shift;
my $options = $ENV{WGET_OPTIONS};
$options or $options = "";
$mirror =~ s/\/$//;
open WGET, "wget -t1 --timeout=20 $options -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
open MD5SUM, "| $md5cmd > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
my $buffer;
while (read WGET, $buffer, 1048576) {
print MD5SUM $buffer;
print OUTPUT $buffer;
}
close MD5SUM;
close WGET;
close OUTPUT;
if (($? >> 8) != 0 ) {
print STDERR "Download failed.\n";
cleanup();
return;
}
my $sum = `cat "$target/$filename.md5sum"`;
$sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
$sum = $1;
if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
print STDERR "MD5 sum of the downloaded file does not match - deleting download.\n";
cleanup();
return;
}
unlink "$target/$filename";
system("mv \"$target/$filename.dl\" \"$target/$filename\"");
cleanup();
}
sub cleanup
{
unlink "$target/$filename.dl";
unlink "$target/$filename.md5sum";
}
foreach my $mirror (@ARGV) {
if ($mirror =~ /^\@SF\/(.+)$/) {
# give sourceforge a few more tries, because it redirects to different mirrors
for (1 .. 5) {
push @mirrors, "http://downloads.sourceforge.net/$1";
}
} elsif ($mirror =~ /^\@GNU\/(.+)$/) {
my $gnupath = $1;
push @mirrors, "ftp://ftp.gnu.org/gnu/$gnupath";
push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$gnupath";
push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$gnupath";
push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$gnupath";
push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$gnupath";
push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$gnupath";
push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$gnupath";
push @mirrors, "ftp://ftp.digex.net/pub/gnu/$gnupath";
} else {
push @mirrors, $mirror;
}
}
#push @mirrors, 'http://mirror1.openwrt.org';
push @mirrors, 'http://mirror2.openwrt.org/sources';
push @mirrors, 'http://downloads.openwrt.org/sources';
while (!$ok) {
my $mirror = shift @mirrors;
$mirror or die "No more mirrors to try - giving up.\n";
download($mirror);
-f "$target/$filename" and $ok = 1;
}
$SIG{INT} = \&cleanup;
|
