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: $0 <target dir> <filename> <md5sum> <mirror> [<mirror> ...]\n";
  20
  21 sub which($) {
  22         my $prog = shift;
  23         my $res = `which $prog`;
  24         $res or return undef;
  25         $res =~ /^no / and return undef;
  26         $res =~ /not found/ and return undef;
  27         return $res;
  28 }
  29
  30 my $md5cmd = which("md5sum");
  31 $md5cmd or $md5cmd = which("md5");
  32 $md5cmd or die 'no md5 checksum program found, please install md5 or md5sum';
  33 chomp $md5cmd;
  34
  35 sub download
  36 {
  37         my $mirror = shift;
  38
  39         open WGET, "wget -t1 --timeout=20 -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
  40         open MD5SUM, "| $md5cmd > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
  41         open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
  42         my $buffer;
  43         while (read WGET, $buffer, 1048576) {
  44                 print MD5SUM $buffer;
  45                 print OUTPUT $buffer;
  46         }
  47         close MD5SUM;
  48         close WGET;
  49         close OUTPUT;
  50
  51         if (($? >> 8) != 0 ) {
  52                 print STDERR "Download failed.\n";
  53                 cleanup();
  54                 return;
  55         }
  56
  57         my $sum = `cat "$target/$filename.md5sum"`;
  58         $sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
  59         $sum = $1;
  60
  61         if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
  62                 print STDERR "MD5 sum of the downloaded file does not match - deleting download.\n";
  63                 cleanup();
  64                 return;
  65         }
  66
  67         unlink "$target/$filename";
  68         system("mv \"$target/$filename.dl\" \"$target/$filename\"");
  69         cleanup();
  70 }
  71
  72 sub cleanup
  73 {
  74         unlink "$target/$filename.dl";
  75         unlink "$target/$filename.md5sum";
  76 }
  77
  78 foreach my $mirror (@ARGV) {
  79         if ($mirror =~ /^\@SF\/(.+)$/) {
  80                 my $sfpath = $1;
  81                 open SF, "wget -t1 -q -O- 'http://prdownloads.sourceforge.net/$sfpath/$filename' |";
  82                 while (<SF>) {
  83                         /RADIO NAME=use_default VALUE=(\w+) OnClick="form\.submit\(\)">/ or
  84                         /type="radio" name="use_default" value="(\w+)" onclick="form\.submit\(\)"\/>/ and do {
  85                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  86                         };
  87                         /<a href="\/.+\?use_mirror=(\w+)"><b>Download/ and do {
  88                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  89                         };
  90                 }
  91                 push @mirrors, "http://dl.sourceforge.net/sourceforge/$sfpath";
  92                 close SF;
  93         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
  94                 my $gnupath = $1;
  95                 push @mirrors, "ftp://ftp.gnu.org/gnu/$gnupath";
  96                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$gnupath";
  97                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$gnupath";
  98                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$gnupath";
  99                 push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$gnupath";
 100                 push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$gnupath";
 101                 push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$gnupath";
 102                 push @mirrors, "ftp://ftp.digex.net/pub/gnu/$gnupath";
 103         } else {
 104                 push @mirrors, $mirror;
 105         }
 106 }
 107
 108 #push @mirrors, 'http://mirror1.openwrt.org/';
 109 push @mirrors, 'http://mirror2.openwrt.org/sources';
 110 push @mirrors, 'http://downloads.openwrt.org/sources/';
 111
 112 while (!$ok) {
 113         my $mirror = shift @mirrors;
 114         $mirror or die "No more mirrors to try - giving up.\n";
 115
 116         download($mirror);
 117         -f "$target/$filename" and $ok = 1;
 118 }
 119
 120 $SIG{INT} = \&cleanup;
 121