scripts/download.pl

   1 #!/usr/bin/env 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 use File::Copy;
  13
  14 @ARGV > 2 or die "Syntax: $0 <target dir> <filename> <md5sum> [<mirror> ...]\n";
  15
  16 my $target = shift @ARGV;
  17 my $filename = shift @ARGV;
  18 my $md5sum = shift @ARGV;
  19 my $scriptdir = dirname($0);
  20 my @mirrors;
  21 my $ok;
  22
  23 sub localmirrors {
  24         my @mlist;
  25         open LM, "$scriptdir/localmirrors" and do {
  26             while (<LM>) {
  27                         chomp $_;
  28                         push @mlist, $_ if $_;
  29                 }
  30                 close LM;
  31         };
  32         open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
  33                 while (<CONFIG>) {
  34                         /^CONFIG_LOCALMIRROR="(.+)"/ and do {
  35                                 chomp;
  36                                 my @local_mirrors = split(/;/, $1);
  37                                 push @mlist, @local_mirrors;
  38                         };
  39                 }
  40                 close CONFIG;
  41         };
  42
  43         my $mirror = $ENV{'DOWNLOAD_MIRROR'};
  44         $mirror and push @mlist, split(/;/, $mirror);
  45
  46         return @mlist;
  47 }
  48
  49 sub which($) {
  50         my $prog = shift;
  51         my $res = `which $prog`;
  52         $res or return undef;
  53         $res =~ /^no / and return undef;
  54         $res =~ /not found/ and return undef;
  55         return $res;
  56 }
  57
  58 my $md5cmd = which("md5sum") || which("md5") || die 'no md5 checksum program found, please install md5 or md5sum';
  59 chomp $md5cmd;
  60
  61 sub download
  62 {
  63         my $mirror = shift;
  64         my $options = $ENV{WGET_OPTIONS} || "";
  65
  66         $mirror =~ s!/$!!;
  67
  68         if ($mirror =~ s!^file://!!) {
  69                 if (! -d "$mirror") {
  70                         print STDERR "Wrong local cache directory -$mirror-.\n";
  71                         cleanup();
  72                         return;
  73                 }
  74
  75                 if (! -d "$target") {
  76                         system("mkdir", "-p", "$target/");
  77                 }
  78
  79                 if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
  80                         print("Failed to search for $filename in $mirror\n");
  81                         return;
  82                 }
  83
  84                 my $link;
  85
  86                 while (defined(my $line = readline TMPDLS)) {
  87                         chomp ($link = $line);
  88                         if ($. > 1) {
  89                                 print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
  90                                 return;
  91                         }
  92                 }
  93
  94                 close TMPDLS;
  95
  96                 if (! $link) {
  97                         print("No instances of $filename found in $mirror.\n");
  98                         return;
  99                 }
 100
 101                 print("Copying $filename from $link\n");
 102                 copy($link, "$target/$filename.dl");
 103
 104                 if (system("$md5cmd '$target/$filename.dl' > '$target/$filename.md5sum'")) {
 105                         print("Failed to generate md5 sum for $filename\n");
 106                         return;
 107                 }
 108         } else {
 109                 open WGET, "wget -t5 --timeout=20 --no-check-certificate $options -O- '$mirror/$filename' |" or die "Cannot launch wget.\n";
 110                 open MD5SUM, "| $md5cmd > '$target/$filename.md5sum'" or die "Cannot launch md5sum.\n";
 111                 open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
 112                 my $buffer;
 113                 while (read WGET, $buffer, 1048576) {
 114                         print MD5SUM $buffer;
 115                         print OUTPUT $buffer;
 116                 }
 117                 close MD5SUM;
 118                 close WGET;
 119                 close OUTPUT;
 120
 121                 if ($? >> 8) {
 122                         print STDERR "Download failed.\n";
 123                         cleanup();
 124                         return;
 125                 }
 126         }
 127
 128         my $sum = `cat "$target/$filename.md5sum"`;
 129         $sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
 130         $sum = $1;
 131
 132         if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
 133                 print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $md5sum) - deleting download.\n";
 134                 cleanup();
 135                 return;
 136         }
 137
 138         unlink "$target/$filename";
 139         system("mv", "$target/$filename.dl", "$target/$filename");
 140         cleanup();
 141 }
 142
 143 sub cleanup
 144 {
 145         unlink "$target/$filename.dl";
 146         unlink "$target/$filename.md5sum";
 147 }
 148
 149 @mirrors = localmirrors();
 150
 151 foreach my $mirror (@ARGV) {
 152         if ($mirror =~ /^\@SF\/(.+)$/) {
 153                 # give sourceforge a few more tries, because it redirects to different mirrors
 154                 for (1 .. 5) {
 155                         push @mirrors, "http://downloads.sourceforge.net/$1";
 156                 }
 157         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 158                 push @mirrors, "http://ftpmirror.gnu.org/$1";
 159                 push @mirrors, "http://ftp.gnu.org/pub/gnu/$1";
 160                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$1";
 161                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$1";
 162                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$1";
 163         } elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
 164                 push @mirrors, "http://download.savannah.gnu.org/releases/$1";
 165                 push @mirrors, "http://nongnu.uib.no/$1";
 166                 push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
 167                 push @mirrors, "http://download-mirror.savannah.gnu.org/releases/$1";
 168         } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
 169                 my @extra = ( $1 );
 170                 if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
 171                         push @extra, "$extra[0]/testing";
 172                 } elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
 173                         push @extra, "$extra[0]/longterm/v$1";
 174                 }
 175                 foreach my $dir (@extra) {
 176                         push @mirrors, "ftp://ftp.all.kernel.org/pub/$dir";
 177                         push @mirrors, "http://ftp.all.kernel.org/pub/$dir";
 178                 }
 179     } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
 180                 push @mirrors, "http://ftp.gnome.org/pub/GNOME/sources/$1";
 181                 push @mirrors, "http://ftp.unina.it/pub/linux/GNOME/sources/$1";
 182                 push @mirrors, "http://fr2.rpmfind.net/linux/gnome.org/sources/$1";
 183                 push @mirrors, "ftp://ftp.dit.upm.es/pub/GNOME/sources/$1";
 184                 push @mirrors, "ftp://ftp.no.gnome.org/pub/GNOME/sources/$1";
 185                 push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
 186                 push @mirrors, "http://ftp.belnet.be/mirror/ftp.gnome.org/sources/$1";
 187                 push @mirrors, "http://linorg.usp.br/gnome/sources/$1";
 188                 push @mirrors, "http://mirror.aarnet.edu.au/pub/GNOME/sources/$1";
 189                 push @mirrors, "http://mirrors.ibiblio.org/pub/mirrors/gnome/sources/$1";
 190                 push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
 191                 push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
 192     }
 193     else {
 194                 push @mirrors, $mirror;
 195         }
 196 }
 197
 198 #push @mirrors, 'http://mirror1.openwrt.org';
 199 push @mirrors, 'http://mirror2.openwrt.org/sources';
 200 push @mirrors, 'http://downloads.openwrt.org/sources';
 201
 202 while (!$ok) {
 203         my $mirror = shift @mirrors;
 204         $mirror or die "No more mirrors to try - giving up.\n";
 205
 206         download($mirror);
 207         -f "$target/$filename" and $ok = 1;
 208 }
 209
 210 $SIG{INT} = \&cleanup;
 211