scripts/download.pl

   1 #!/usr/bin/perl
   2 #
   3 # Copyright (C) 2006 OpenWrt.org
   4 #
   5 # This is free software, licensed under the GNU General Public License v2.
   6 # See /LICENSE for more information.
   7 #
   8
   9 use strict;
  10 use warnings;
  11
  12 my $target = shift @ARGV;
  13 my $filename = shift @ARGV;
  14 my $md5sum = shift @ARGV;
  15 my @mirrors;
  16
  17 my $ok;
  18
  19 @ARGV > 0 or die "Syntax: $0 <target dir> <filename> <md5sum> <mirror> [<mirror> ...]\n";
  20
  21 sub download
  22 {
  23         my $mirror = shift;
  24
  25         open WGET, "wget -t1 --timeout=20 -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
  26         open MD5SUM, "| md5sum > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
  27         open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
  28         my $buffer;
  29         while (read WGET, $buffer, 1048576) {
  30                 print MD5SUM $buffer;
  31                 print OUTPUT $buffer;
  32         }
  33         close MD5SUM;
  34         close WGET;
  35         close OUTPUT;
  36
  37         if (($? >> 8) != 0 ) {
  38                 print STDERR "Download failed.\n";
  39                 cleanup();
  40                 return;
  41         }
  42
  43         my $sum = `cat "$target/$filename.md5sum"`;
  44         $sum =~ /^(\w+)\s+/ or die "Could not generate md5sum\n";
  45         $sum = $1;
  46
  47         if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
  48                 print STDERR "MD5 sum of the downloaded file does not match - deleting download.\n";
  49                 cleanup();
  50                 return;
  51         }
  52
  53         unlink "$target/$filename";
  54         system("mv \"$target/$filename.dl\" \"$target/$filename\"");
  55         cleanup();
  56 }
  57
  58 sub cleanup
  59 {
  60         unlink "$target/$filename.dl";
  61         unlink "$target/$filename.md5sum";
  62 }
  63
  64 foreach my $mirror (@ARGV) {
  65         if ($mirror =~ /^\@SF\/(.+)$/) {
  66                 my $sfpath = $1;
  67                 open SF, "wget -t1 -q -O- 'http://prdownloads.sourceforge.net/$sfpath/$filename' |";
  68                 while (<SF>) {
  69                         /RADIO NAME=use_default VALUE=(\w+) OnClick="form\.submit\(\)">/ or
  70                         /type="radio" name="use_default" value="(\w+)" onclick="form\.submit\(\)"\/>/ and do {
  71                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  72                         };
  73                         /<a href="\/.+\?use_mirror=(\w+)"><b>Download/ and do {
  74                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  75                         };
  76                 }
  77                 push @mirrors, "http://dl.sourceforge.net/sourceforge/$sfpath";
  78                 close SF;
  79         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
  80                 my $gnupath = $1;
  81                 push @mirrors, "ftp://ftp.gnu.org/gnu/$gnupath";
  82                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$gnupath";
  83                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$gnupath";
  84                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$gnupath";
  85                 push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$gnupath";
  86                 push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$gnupath";
  87                 push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$gnupath";
  88                 push @mirrors, "ftp://ftp.digex.net/pub/gnu/$gnupath";
  89         } else {
  90                 push @mirrors, $mirror;
  91         }
  92 }
  93
  94 push @mirrors, 'http://mirror1.openwrt.org/';
  95 push @mirrors, 'http://mirror2.openwrt.org/';
  96 push @mirrors, 'http://downloads.openwrt.org/sources/';
  97
  98 while (!$ok) {
  99         my $mirror = shift @mirrors;
 100         $mirror or die "No more mirrors to try - giving up.\n";
 101
 102         download($mirror);
 103         -f "$target/$filename" and $ok = 1;
 104 }
 105
 106 $SIG{INT} = \&cleanup;
 107