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> <hash> <url filename> [<mirror> ...]\n";
  15
  16 my $url_filename;
  17 my $target = shift @ARGV;
  18 my $filename = shift @ARGV;
  19 my $file_hash = 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 sub hash_cmd() {
  63         my $len = length($file_hash);
  64         my $cmd;
  65
  66         $len == 64 and return "openssl dgst -sha256 | sed -e 's,.*= ,,'";
  67         $len == 32 and do {
  68                 my $cmd = which("md5sum") || which("md5") || die 'no md5 checksum program found, please install md5 or md5sum';
  69                 chomp $cmd;
  70                 return $cmd;
  71         };
  72         return undef;
  73 }
  74
  75 my $hash_cmd = hash_cmd();
  76
  77 sub download
  78 {
  79         my $mirror = shift;
  80         my $options = $ENV{WGET_OPTIONS} || "";
  81
  82         $mirror =~ s!/$!!;
  83
  84         if ($mirror =~ s!^file://!!) {
  85                 if (! -d "$mirror") {
  86                         print STDERR "Wrong local cache directory -$mirror-.\n";
  87                         cleanup();
  88                         return;
  89                 }
  90
  91                 if (! -d "$target") {
  92                         system("mkdir", "-p", "$target/");
  93                 }
  94
  95                 if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
  96                         print("Failed to search for $filename in $mirror\n");
  97                         return;
  98                 }
  99
 100                 my $link;
 101
 102                 while (defined(my $line = readline TMPDLS)) {
 103                         chomp ($link = $line);
 104                         if ($. > 1) {
 105                                 print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
 106                                 return;
 107                         }
 108                 }
 109
 110                 close TMPDLS;
 111
 112                 if (! $link) {
 113                         print("No instances of $filename found in $mirror.\n");
 114                         return;
 115                 }
 116
 117                 print("Copying $filename from $link\n");
 118                 copy($link, "$target/$filename.dl");
 119
 120                 $hash_cmd and do {
 121                         if (system("$hash_cmd '$target/$filename.dl' > '$target/$filename.hash'")) {
 122                                 print("Failed to generate hash for $filename\n");
 123                                 return;
 124                         }
 125                 };
 126         } else {
 127                 open WGET, "wget -t5 --timeout=20 --no-check-certificate $options -O- '$mirror/$url_filename' |" or die "Cannot launch wget.\n";
 128                 $hash_cmd and do {
 129                         open MD5SUM, "| $hash_cmd > '$target/$filename.hash'" or die "Cannot launch $hash_cmd.\n";
 130                 };
 131                 open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
 132                 my $buffer;
 133                 while (read WGET, $buffer, 1048576) {
 134                         $hash_cmd and print MD5SUM $buffer;
 135                         print OUTPUT $buffer;
 136                 }
 137                 $hash_cmd and close MD5SUM;
 138                 close WGET;
 139                 close OUTPUT;
 140
 141                 if ($? >> 8) {
 142                         print STDERR "Download failed.\n";
 143                         cleanup();
 144                         return;
 145                 }
 146         }
 147
 148         $hash_cmd and do {
 149                 my $sum = `cat "$target/$filename.hash"`;
 150                 $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 151                 $sum = $1;
 152
 153                 if ($sum ne $file_hash) {
 154                         print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 155                         cleanup();
 156                         return;
 157                 }
 158         };
 159
 160         unlink "$target/$filename";
 161         system("mv", "$target/$filename.dl", "$target/$filename");
 162         cleanup();
 163 }
 164
 165 sub cleanup
 166 {
 167         unlink "$target/$filename.dl";
 168         unlink "$target/$filename.hash";
 169 }
 170
 171 @mirrors = localmirrors();
 172
 173 foreach my $mirror (@ARGV) {
 174         if ($mirror =~ /^\@SF\/(.+)$/) {
 175                 # give sourceforge a few more tries, because it redirects to different mirrors
 176                 for (1 .. 5) {
 177                         push @mirrors, "http://downloads.sourceforge.net/$1";
 178                 }
 179         } elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
 180                 push @mirrors, "http://ftp.tudelft.nl/apache/$1";
 181                 push @mirrors, "http://apache.openmirror.de/$1";
 182                 push @mirrors, "http://mirrors.ocf.berkeley.edu/apache/$1";
 183                 push @mirrors, "http://mirror.cc.columbia.edu/pub/software/apache/$1";
 184                 push @mirrors, "http://ftp.jaist.ac.jp/pub/apache/$1";
 185         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 186                 push @mirrors, "http://ftpmirror.gnu.org/$1";
 187                 push @mirrors, "http://ftp.gnu.org/pub/gnu/$1";
 188                 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$1";
 189                 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$1";
 190                 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$1";
 191         } elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
 192                 push @mirrors, "http://download.savannah.gnu.org/releases/$1";
 193                 push @mirrors, "http://nongnu.uib.no/$1";
 194                 push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
 195                 push @mirrors, "http://download-mirror.savannah.gnu.org/releases/$1";
 196         } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
 197                 my @extra = ( $1 );
 198                 if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
 199                         push @extra, "$extra[0]/testing";
 200                 } elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
 201                         push @extra, "$extra[0]/longterm/v$1";
 202                 }
 203                 foreach my $dir (@extra) {
 204                         push @mirrors, "https://kernel.org/pub/$dir";
 205                         push @mirrors, "ftp://kernel.org/pub/$dir";
 206                 }
 207     } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
 208                 push @mirrors, "http://ftp.gnome.org/pub/GNOME/sources/$1";
 209                 push @mirrors, "http://www.mirrorservice.org/sites/ftp.gnome.org/pub/GNOME/sources/$1";
 210                 push @mirrors, "http://fr2.rpmfind.net/linux/gnome.org/sources/$1";
 211                 push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
 212                 push @mirrors, "http://ftp.belnet.be/ftp.gnome.org/sources/$1";
 213                 push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
 214                 push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
 215     }
 216     else {
 217                 push @mirrors, $mirror;
 218         }
 219 }
 220
 221 #push @mirrors, 'http://mirror1.openwrt.org';
 222 push @mirrors, 'http://mirror2.openwrt.org/sources';
 223 push @mirrors, 'http://downloads.openwrt.org/sources';
 224
 225 while (!$ok) {
 226         my $mirror = shift @mirrors;
 227         $mirror or die "No more mirrors to try - giving up.\n";
 228
 229         download($mirror);
 230         -f "$target/$filename" and $ok = 1;
 231 }
 232
 233 $SIG{INT} = \&cleanup;
 234