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