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 use File::Basename;
  12
  13 @ARGV > 2 or die "Syntax: $0 <target dir> <filename> <md5sum> [<mirror> ...]\n";
  14
  15 my $target = shift @ARGV;
  16 my $filename = shift @ARGV;
  17 my $md5sum = shift @ARGV;
  18 my $scriptdir = dirname($0);
  19 my @mirrors;
  20 my $ok;
  21
  22 sub localmirrors {
  23     my @mlist;
  24     open LM, "$scriptdir/localmirrors" and do {
  25             while (<LM>) {
  26                         chomp $_;
  27                         push @mlist, $_;
  28                 }
  29                 close LM;
  30         };
  31         open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
  32                 while (<CONFIG>) {
  33                         /^CONFIG_LOCALMIRROR="(.+)"/ and do {
  34                                 chomp;
  35                                 push @mlist, $1;
  36                         };
  37                 }
  38                 close CONFIG;
  39         };
  40
  41
  42     return @mlist;
  43 }
  44
  45 sub which($) {
  46         my $prog = shift;
  47         my $res = `which $prog`;
  48         $res or return undef;
  49         $res =~ /^no / and return undef;
  50         $res =~ /not found/ and return undef;
  51         return $res;
  52 }
  53
  54 my $md5cmd = which("md5sum");
  55 $md5cmd or $md5cmd = which("md5");
  56 $md5cmd or die 'no md5 checksum program found, please install md5 or md5sum';
  57 chomp $md5cmd;
  58
  59 sub download
  60 {
  61         my $mirror = shift;
  62         my $options = $ENV{WGET_OPTIONS};
  63         $options or $options = "";
  64
  65         $mirror =~ s/\/$//;
  66         open WGET, "wget -t5 --timeout=20 $options -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
  67         open MD5SUM, "| $md5cmd > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
  68         open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
  69         my $buffer;
  70         while (read WGET, $buffer, 1048576) {
  71                 print MD5SUM $buffer;
  72                 print OUTPUT $buffer;
  73         }
  74         close MD5SUM;
  75         close WGET;
  76         close OUTPUT;
  77
  78         if (($? >> 8) != 0 ) {
  79                 print STDERR "Download failed.\n";
  80                 cleanup();
  81                 return;
  82         }
  83
  84         my $sum = `cat "$target/$filename.md5sum"`;
  85         $sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
  86         $sum = $1;
  87
  88         if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
  89                 print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $md5sum) - deleting download.\n";
  90                 cleanup();
  91                 return;
  92         }
  93
  94         unlink "$target/$filename";
  95         system("mv \"$target/$filename.dl\" \"$target/$filename\"");
  96         cleanup();
  97 }
  98
  99 sub cleanup
 100 {
 101         unlink "$target/$filename.dl";
 102         unlink "$target/$filename.md5sum";
 103 }
 104
 105 @mirrors = localmirrors();
 106
 107 foreach my $mirror (@ARGV) {
 108         if ($mirror =~ /^\@SF\/(.+)$/) {
 109                 # give sourceforge a few more tries, because it redirects to different mirrors
 110                 for (1 .. 5) {
 111                         push @mirrors, "http://downloads.sourceforge.net/$1";
 112                 }
 113         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 114                 push @mirrors, "ftp://ftp.gnu.org/gnu/$1";
 115                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$1";
 116                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$1";
 117                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$1";
 118                 push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$1";
 119                 push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$1";
 120                 push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$1";
 121                 push @mirrors, "ftp://ftp.digex.net/pub/gnu/$1";
 122         } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
 123                 push @mirrors, "ftp://ftp.us.kernel.org/pub/$1";
 124                 push @mirrors, "http://ftp.us.kernel.org/pub/$1";
 125                 push @mirrors, "ftp://ftp.kernel.org/pub/$1";
 126                 push @mirrors, "http://ftp.kernel.org/pub/$1";
 127                 push @mirrors, "ftp://ftp.de.kernel.org/pub/$1";
 128                 push @mirrors, "http://ftp.de.kernel.org/pub/$1";
 129                 push @mirrors, "ftp://ftp.fr.kernel.org/pub/$1";
 130                 push @mirrors, "http://ftp.fr.kernel.org/pub/$1";
 131         } else {
 132                 push @mirrors, $mirror;
 133         }
 134 }
 135
 136 #push @mirrors, 'http://mirror1.openwrt.org';
 137 push @mirrors, 'http://mirror2.openwrt.org/sources';
 138 push @mirrors, 'http://downloads.openwrt.org/sources';
 139
 140 while (!$ok) {
 141         my $mirror = shift @mirrors;
 142         $mirror or die "No more mirrors to try - giving up.\n";
 143
 144         download($mirror);
 145         -f "$target/$filename" and $ok = 1;
 146 }
 147
 148 $SIG{INT} = \&cleanup;
 149