scripts/download.pl

   1 #!/usr/bin/env perl
   2 #
   3 # Copyright (C) 2006 OpenWrt.org
   4 # Copyright (C) 2016 LEDE project
   5 #
   6 # This is free software, licensed under the GNU General Public License v2.
   7 # See /LICENSE for more information.
   8 #
   9
  10 use strict;
  11 use warnings;
  12 use File::Basename;
  13 use File::Copy;
  14 use Text::ParseWords;
  15
  16 @ARGV > 2 or die "Syntax: $0 <target dir> <filename> <hash> <url filename> [<mirror> ...]\n";
  17
  18 my $url_filename;
  19 my $target = glob(shift @ARGV);
  20 my $filename = shift @ARGV;
  21 my $file_hash = shift @ARGV;
  22 $url_filename = shift @ARGV unless $ARGV[0] =~ /:\/\//;
  23 my $scriptdir = dirname($0);
  24 my @mirrors;
  25 my $ok;
  26
  27 $url_filename or $url_filename = $filename;
  28
  29 sub localmirrors {
  30         my @mlist;
  31         open LM, "$scriptdir/localmirrors" and do {
  32             while (<LM>) {
  33                         chomp $_;
  34                         push @mlist, $_ if $_;
  35                 }
  36                 close LM;
  37         };
  38         open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
  39                 while (<CONFIG>) {
  40                         /^CONFIG_LOCALMIRROR="(.+)"/ and do {
  41                                 chomp;
  42                                 my @local_mirrors = split(/;/, $1);
  43                                 push @mlist, @local_mirrors;
  44                         };
  45                 }
  46                 close CONFIG;
  47         };
  48
  49         my $mirror = $ENV{'DOWNLOAD_MIRROR'};
  50         $mirror and push @mlist, split(/;/, $mirror);
  51
  52         return @mlist;
  53 }
  54
  55 sub which($) {
  56         my $prog = shift;
  57         my $res = `command -v $prog`;
  58         $res or return undef;
  59         return $res;
  60 }
  61
  62 sub hash_cmd() {
  63         my $len = length($file_hash);
  64         my $cmd;
  65
  66         $len == 64 and return "$ENV{'MKHASH'} sha256";
  67         $len == 32 and return "$ENV{'MKHASH'} md5";
  68         return undef;
  69 }
  70
  71 sub download_cmd($) {
  72         my $url = shift;
  73         my $have_curl = 0;
  74
  75         if (open CURL, '-|', 'curl', '--version') {
  76                 if (defined(my $line = readline CURL)) {
  77                         $have_curl = 1 if $line =~ /^curl /;
  78                 }
  79                 close CURL;
  80         }
  81
  82         return $have_curl
  83                 ? (qw(curl -f --connect-timeout 20 --retry 5 --location --insecure), shellwords($ENV{CURL_OPTIONS} || ''), $url)
  84                 : (qw(wget --tries=5 --timeout=20 --no-check-certificate --output-document=-), shellwords($ENV{WGET_OPTIONS} || ''), $url)
  85         ;
  86 }
  87
  88 my $hash_cmd = hash_cmd();
  89 $hash_cmd or ($file_hash eq "skip") or die "Cannot find appropriate hash command, ensure the provided hash is either a MD5 or SHA256 checksum.\n";
  90
  91 sub download
  92 {
  93         my $mirror = shift;
  94         my $download_filename = shift;
  95
  96         $mirror =~ s!/$!!;
  97
  98         if ($mirror =~ s!^file://!!) {
  99                 if (! -d "$mirror") {
 100                         print STDERR "Wrong local cache directory -$mirror-.\n";
 101                         cleanup();
 102                         return;
 103                 }
 104
 105                 if (! -d "$target") {
 106                         system("mkdir", "-p", "$target/");
 107                 }
 108
 109                 if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
 110                         print("Failed to search for $filename in $mirror\n");
 111                         return;
 112                 }
 113
 114                 my $link;
 115
 116                 while (defined(my $line = readline TMPDLS)) {
 117                         chomp ($link = $line);
 118                         if ($. > 1) {
 119                                 print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
 120                                 return;
 121                         }
 122                 }
 123
 124                 close TMPDLS;
 125
 126                 if (! $link) {
 127                         print("No instances of $filename found in $mirror.\n");
 128                         return;
 129                 }
 130
 131                 print("Copying $filename from $link\n");
 132                 copy($link, "$target/$filename.dl");
 133
 134                 $hash_cmd and do {
 135                         if (system("cat '$target/$filename.dl' | $hash_cmd > '$target/$filename.hash'")) {
 136                                 print("Failed to generate hash for $filename\n");
 137                                 return;
 138                         }
 139                 };
 140         } else {
 141                 my @cmd = download_cmd("$mirror/$download_filename");
 142                 print STDERR "+ ".join(" ",@cmd)."\n";
 143                 open(FETCH_FD, '-|', @cmd) or die "Cannot launch curl or wget.\n";
 144                 $hash_cmd and do {
 145                         open MD5SUM, "| $hash_cmd > '$target/$filename.hash'" or die "Cannot launch $hash_cmd.\n";
 146                 };
 147                 open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
 148                 my $buffer;
 149                 while (read FETCH_FD, $buffer, 1048576) {
 150                         $hash_cmd and print MD5SUM $buffer;
 151                         print OUTPUT $buffer;
 152                 }
 153                 $hash_cmd and close MD5SUM;
 154                 close FETCH_FD;
 155                 close OUTPUT;
 156
 157                 if ($? >> 8) {
 158                         print STDERR "Download failed.\n";
 159                         cleanup();
 160                         return;
 161                 }
 162         }
 163
 164         $hash_cmd and do {
 165                 my $sum = `cat "$target/$filename.hash"`;
 166                 $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 167                 $sum = $1;
 168
 169                 if ($sum ne $file_hash) {
 170                         print STDERR "Hash of the downloaded file does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 171                         cleanup();
 172                         return;
 173                 }
 174         };
 175
 176         unlink "$target/$filename";
 177         system("mv", "$target/$filename.dl", "$target/$filename");
 178         cleanup();
 179 }
 180
 181 sub cleanup
 182 {
 183         unlink "$target/$filename.dl";
 184         unlink "$target/$filename.hash";
 185 }
 186
 187 @mirrors = localmirrors();
 188
 189 foreach my $mirror (@ARGV) {
 190         if ($mirror =~ /^\@SF\/(.+)$/) {
 191                 # give sourceforge a few more tries, because it redirects to different mirrors
 192                 for (1 .. 5) {
 193                         push @mirrors, "https://downloads.sourceforge.net/$1";
 194                 }
 195         } elsif ($mirror =~ /^\@OPENWRT$/) {
 196                 # use OpenWrt source server directly
 197         } elsif ($mirror =~ /^\@DEBIAN\/(.+)$/) {
 198                 push @mirrors, "https://ftp.debian.org/debian/$1";
 199                 push @mirrors, "https://mirror.leaseweb.com/debian/$1";
 200                 push @mirrors, "https://mirror.netcologne.de/debian/$1";
 201         } elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
 202                 push @mirrors, "https://mirror.netcologne.de/apache.org/$1";
 203                 push @mirrors, "https://mirror.aarnet.edu.au/pub/apache/$1";
 204                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/apache/$1";
 205                 push @mirrors, "https://archive.apache.org/dist/$1";
 206                 push @mirrors, "http://mirror.cogentco.com/pub/apache/$1";
 207                 push @mirrors, "http://mirror.navercorp.com/apache/$1";
 208                 push @mirrors, "http://ftp.jaist.ac.jp/pub/apache/$1";
 209                 push @mirrors, "ftp://apache.cs.utah.edu/apache.org/$1";
 210                 push @mirrors, "ftp://apache.mirrors.ovh.net/ftp.apache.org/dist/$1";
 211         } elsif ($mirror =~ /^\@GITHUB\/(.+)$/) {
 212                 # give github a few more tries (different mirrors)
 213                 for (1 .. 5) {
 214                         push @mirrors, "https://raw.githubusercontent.com/$1";
 215                 }
 216         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 217                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnu/$1";
 218                 push @mirrors, "https://mirror.netcologne.de/gnu/$1";
 219                 push @mirrors, "http://ftp.kddilabs.jp/GNU/gnu/$1";
 220                 push @mirrors, "http://www.nic.funet.fi/pub/gnu/gnu/$1";
 221                 push @mirrors, "http://mirror.internode.on.net/pub/gnu/$1";
 222                 push @mirrors, "http://mirror.navercorp.com/gnu/$1";
 223                 push @mirrors, "ftp://mirrors.rit.edu/gnu/$1";
 224                 push @mirrors, "ftp://download.xs4all.nl/pub/gnu/$1";
 225                 push @mirrors, "https://ftp.gnu.org/gnu/$1";
 226         } elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
 227                 push @mirrors, "https://mirror.netcologne.de/savannah/$1";
 228                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/nongnu/$1";
 229                 push @mirrors, "http://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
 230                 push @mirrors, "http://nongnu.uib.no/$1";
 231                 push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
 232                 push @mirrors, "ftp://cdimage.debian.org/mirror/gnu.org/savannah/$1";
 233                 push @mirrors, "ftp://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
 234         } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
 235                 my @extra = ( $1 );
 236                 if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
 237                         push @extra, "$extra[0]/testing";
 238                 } elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
 239                         push @extra, "$extra[0]/longterm/v$1";
 240                 }
 241                 foreach my $dir (@extra) {
 242                         push @mirrors, "https://cdn.kernel.org/pub/$dir";
 243                         push @mirrors, "https://download.xs4all.nl/ftp.kernel.org/pub/$dir";
 244                         push @mirrors, "https://mirrors.mit.edu/kernel/$dir";
 245                         push @mirrors, "http://ftp.nara.wide.ad.jp/pub/kernel.org/$dir";
 246                         push @mirrors, "http://www.ring.gr.jp/archives/linux/kernel.org/$dir";
 247                         push @mirrors, "ftp://ftp.riken.jp/Linux/kernel.org/$dir";
 248                         push @mirrors, "ftp://www.mirrorservice.org/sites/ftp.kernel.org/pub/$dir";
 249                 }
 250         } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
 251                 push @mirrors, "https://download.gnome.org/sources/$1";
 252                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnome/sources/$1";
 253                 push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
 254                 push @mirrors, "http://ftp.kaist.ac.kr/gnome/sources/$1";
 255                 push @mirrors, "http://www.mirrorservice.org/sites/ftp.gnome.org/pub/GNOME/sources/$1";
 256                 push @mirrors, "http://mirror.internode.on.net/pub/gnome/sources/$1";
 257                 push @mirrors, "http://ftp.belnet.be/ftp.gnome.org/sources/$1";
 258                 push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
 259                 push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
 260         } else {
 261                 push @mirrors, $mirror;
 262         }
 263 }
 264
 265 push @mirrors, 'https://sources.cdn.openwrt.org';
 266 push @mirrors, 'https://sources.openwrt.org';
 267 push @mirrors, 'https://mirror2.openwrt.org/sources';
 268
 269 if (-f "$target/$filename") {
 270         $hash_cmd and do {
 271                 if (system("cat '$target/$filename' | $hash_cmd > '$target/$filename.hash'")) {
 272                         die "Failed to generate hash for $filename\n";
 273                 }
 274
 275                 my $sum = `cat "$target/$filename.hash"`;
 276                 $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 277                 $sum = $1;
 278
 279                 cleanup();
 280                 exit 0 if $sum eq $file_hash;
 281
 282                 die "Hash of the local file $filename does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 283                 unlink "$target/$filename";
 284         };
 285 }
 286
 287 while (!-f "$target/$filename") {
 288         my $mirror = shift @mirrors;
 289         $mirror or die "No more mirrors to try - giving up.\n";
 290
 291         download($mirror, $url_filename);
 292         if (!-f "$target/$filename" && $url_filename ne $filename) {
 293                 download($mirror, $filename);
 294         }
 295 }
 296
 297 $SIG{INT} = \&cleanup;