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