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         my $options = $ENV{WGET_OPTIONS};
  39         $options or $options = "";
  40
  41         $mirror =~ s/\/$//;
  42         open WGET, "wget -t1 --timeout=20 $options -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
  43         open MD5SUM, "| $md5cmd > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
  44         open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
  45         my $buffer;
  46         while (read WGET, $buffer, 1048576) {
  47                 print MD5SUM $buffer;
  48                 print OUTPUT $buffer;
  49         }
  50         close MD5SUM;
  51         close WGET;
  52         close OUTPUT;
  53
  54         if (($? >> 8) != 0 ) {
  55                 print STDERR "Download failed.\n";
  56                 cleanup();
  57                 return;
  58         }
  59
  60         my $sum = `cat "$target/$filename.md5sum"`;
  61         $sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
  62         $sum = $1;
  63
  64         if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
  65                 print STDERR "MD5 sum of the downloaded file does not match - deleting download.\n";
  66                 cleanup();
  67                 return;
  68         }
  69
  70         unlink "$target/$filename";
  71         system("mv \"$target/$filename.dl\" \"$target/$filename\"");
  72         cleanup();
  73 }
  74
  75 sub cleanup
  76 {
  77         unlink "$target/$filename.dl";
  78         unlink "$target/$filename.md5sum";
  79 }
  80
  81 foreach my $mirror (@ARGV) {
  82         if ($mirror =~ /^\@SF\/(.+)$/) {
  83                 my $sfpath = $1;
  84                 open SF, "wget -t1 -q -O- 'http://prdownloads.sourceforge.net/$sfpath/$filename' |";
  85                 while (<SF>) {
  86                         /RADIO NAME=use_default VALUE=(\w+) OnClick="form\.submit\(\)">/ or
  87                         /type="radio" name="use_default" value="(\w+)" onclick="form\.submit\(\)"\/>/ and do {
  88                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  89                         };
  90                         /<a href="\/.+\?use_mirror=(\w+)"><b>Download/ and do {
  91                                 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
  92                         };
  93                 }
  94                 push @mirrors, "http://dl.sourceforge.net/sourceforge/$sfpath";
  95                 close SF;
  96         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
  97                 my $gnupath = $1;
  98                 push @mirrors, "ftp://ftp.gnu.org/gnu/$gnupath";
  99                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$gnupath";
 100                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$gnupath";
 101                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$gnupath";
 102                 push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$gnupath";
 103                 push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$gnupath";
 104                 push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$gnupath";
 105                 push @mirrors, "ftp://ftp.digex.net/pub/gnu/$gnupath";
 106         } else {
 107                 push @mirrors, $mirror;
 108         }
 109 }
 110
 111 #push @mirrors, 'http://mirror1.openwrt.org';
 112 push @mirrors, 'http://mirror2.openwrt.org/sources';
 113 push @mirrors, 'http://downloads.openwrt.org/sources';
 114
 115 while (!$ok) {
 116         my $mirror = shift @mirrors;
 117         $mirror or die "No more mirrors to try - giving up.\n";
 118
 119         download($mirror);
 120         -f "$target/$filename" and $ok = 1;
 121 }
 122
 123 $SIG{INT} = \&cleanup;
 124