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