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 my $check_certificate = $ENV{DOWNLOAD_CHECK_CERTIFICATE} eq "y";
  28
  29 $url_filename or $url_filename = $filename;
  30
  31 sub localmirrors {
  32         my @mlist;
  33         open LM, "$scriptdir/localmirrors" and do {
  34             while (<LM>) {
  35                         chomp $_;
  36                         push @mlist, $_ if $_;
  37                 }
  38                 close LM;
  39         };
  40         open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
  41                 while (<CONFIG>) {
  42                         /^CONFIG_LOCALMIRROR="(.+)"/ and do {
  43                                 chomp;
  44                                 my @local_mirrors = split(/;/, $1);
  45                                 push @mlist, @local_mirrors;
  46                         };
  47                 }
  48                 close CONFIG;
  49         };
  50
  51         my $mirror = $ENV{'DOWNLOAD_MIRROR'};
  52         $mirror and push @mlist, split(/;/, $mirror);
  53
  54         return @mlist;
  55 }
  56
  57 sub which($) {
  58         my $prog = shift;
  59         my $res = `command -v $prog`;
  60         $res or return undef;
  61         return $res;
  62 }
  63
  64 sub hash_cmd() {
  65         my $len = length($file_hash);
  66         my $cmd;
  67
  68         $len == 64 and return "$ENV{'MKHASH'} sha256";
  69         $len == 32 and return "$ENV{'MKHASH'} md5";
  70         return undef;
  71 }
  72
  73 sub download_cmd {
  74         my $url = shift;
  75         my $have_curl = 0;
  76         my $have_aria2c = 0;
  77         my $filename = shift;
  78         my @additional_mirrors = @_;
  79         my $mirrors_url = "'$url'";
  80
  81         my @chArray = ('a'..'z', 'A'..'Z', 0..9);
  82         my $rfn = join '', map{ $chArray[int rand @chArray] } 0..9;
  83         if (open CURL, '-|', 'curl', '--version') {
  84                 if (defined(my $line = readline CURL)) {
  85                         $have_curl = 1 if $line =~ /^curl /;
  86                 }
  87                 close CURL;
  88         }
  89         if (open ARIA2C, '-|', 'aria2c', '--version') {
  90                 if (defined(my $line = readline ARIA2C)) {
  91                         $have_aria2c = 1 if $line =~ /^aria2 /;
  92                 }
  93                 close ARIA2C;
  94         }
  95
  96         for my $mirror (@additional_mirrors ) {
  97                 $mirrors_url = $mirrors_url ." '$mirror /$filename'";
  98         }
  99
 100         if ($have_aria2c) {
 101                 return join(" ", "touch /dev/shm/${rfn}_spp;",
 102                         qw(aria2c --stderr -c -x2 -s10 -j10 -k1M), $mirrors_url ,
 103                         $check_certificate ? () : '--check-certificate=false',
 104                         "--server-stat-of=/dev/shm/${rfn}_spp",
 105                         "--server-stat-if=/dev/shm/${rfn}_spp",
 106                         "-d /dev/shm -o $rfn;",
 107                         "cat /dev/shm/$rfn;", "rm /dev/shm/$rfn /dev/shm/${rfn}_spp");
 108         } elsif ($have_curl) {
 109                 return (qw(curl -f --connect-timeout 20 --retry 5 --location),
 110                         $check_certificate ? () : '--insecure',
 111                         shellwords($ENV{CURL_OPTIONS} || ''),
 112                         $url);
 113         } else {
 114                 return (qw(wget --tries=5 --timeout=20 --output-document=-),
 115                         $check_certificate ? () : '--no-check-certificate',
 116                         shellwords($ENV{WGET_OPTIONS} || ''),
 117                         $url);
 118         }
 119 }
 120
 121 my $hash_cmd = hash_cmd();
 122 $hash_cmd or ($file_hash eq "skip") or die "Cannot find appropriate hash command, ensure the provided hash is either a MD5 or SHA256 checksum.\n";
 123
 124 sub download
 125 {
 126         my $mirror = shift;
 127         my $download_filename = shift;
 128         my @additional_mirrors = @_;
 129
 130         $mirror =~ s!/$!!;
 131
 132         if ($mirror =~ s!^file://!!) {
 133                 if (! -d "$mirror") {
 134                         print STDERR "Wrong local cache directory -$mirror-.\n";
 135                         cleanup();
 136                         return;
 137                 }
 138
 139                 if (! -d "$target") {
 140                         system("mkdir", "-p", "$target/");
 141                 }
 142
 143                 if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
 144                         print("Failed to search for $filename in $mirror\n");
 145                         return;
 146                 }
 147
 148                 my $link;
 149
 150                 while (defined(my $line = readline TMPDLS)) {
 151                         chomp ($link = $line);
 152                         if ($. > 1) {
 153                                 print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
 154                                 return;
 155                         }
 156                 }
 157
 158                 close TMPDLS;
 159
 160                 if (! $link) {
 161                         print("No instances of $filename found in $mirror.\n");
 162                         return;
 163                 }
 164
 165                 print("Copying $filename from $link\n");
 166                 copy($link, "$target/$filename.dl");
 167
 168                 $hash_cmd and do {
 169                         if (system("cat '$target/$filename.dl' | $hash_cmd > '$target/$filename.hash'")) {
 170                                 print("Failed to generate hash for $filename\n");
 171                                 return;
 172                         }
 173                 };
 174         } else {
 175                 my @cmd = download_cmd("$mirror/$download_filename", $download_filename, @additional_mirrors);
 176                 print STDERR "+ ".join(" ",@cmd)."\n";
 177                 open(FETCH_FD, '-|', @cmd) or die "Cannot launch aria2c, curl or wget.\n";
 178                 $hash_cmd and do {
 179                         open MD5SUM, "| $hash_cmd > '$target/$filename.hash'" or die "Cannot launch $hash_cmd.\n";
 180                 };
 181                 open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
 182                 my $buffer;
 183                 while (read FETCH_FD, $buffer, 1048576) {
 184                         $hash_cmd and print MD5SUM $buffer;
 185                         print OUTPUT $buffer;
 186                 }
 187                 $hash_cmd and close MD5SUM;
 188                 close FETCH_FD;
 189                 close OUTPUT;
 190
 191                 if ($? >> 8) {
 192                         print STDERR "Download failed.\n";
 193                         cleanup();
 194                         return;
 195                 }
 196         }
 197
 198         $hash_cmd and do {
 199                 my $sum = `cat "$target/$filename.hash"`;
 200                 $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 201                 $sum = $1;
 202
 203                 if ($sum ne $file_hash) {
 204                         print STDERR "Hash of the downloaded file does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 205                         cleanup();
 206                         return;
 207                 }
 208         };
 209
 210         unlink "$target/$filename";
 211         system("mv", "$target/$filename.dl", "$target/$filename");
 212         cleanup();
 213 }
 214
 215 sub cleanup
 216 {
 217         unlink "$target/$filename.dl";
 218         unlink "$target/$filename.hash";
 219 }
 220
 221 @mirrors = localmirrors();
 222
 223 foreach my $mirror (@ARGV) {
 224         if ($mirror =~ /^\@SF\/(.+)$/) {
 225                 # give sourceforge a few more tries, because it redirects to different mirrors
 226                 for (1 .. 5) {
 227                         push @mirrors, "https://downloads.sourceforge.net/$1";
 228                 }
 229         } elsif ($mirror =~ /^\@OPENWRT$/) {
 230                 # use OpenWrt source server directly
 231         } elsif ($mirror =~ /^\@DEBIAN\/(.+)$/) {
 232                 push @mirrors, "https://ftp.debian.org/debian/$1";
 233                 push @mirrors, "https://mirror.leaseweb.com/debian/$1";
 234                 push @mirrors, "https://mirror.netcologne.de/debian/$1";
 235         } elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
 236                 push @mirrors, "https://mirror.netcologne.de/apache.org/$1";
 237                 push @mirrors, "https://mirror.aarnet.edu.au/pub/apache/$1";
 238                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/apache/$1";
 239                 push @mirrors, "https://archive.apache.org/dist/$1";
 240                 push @mirrors, "http://mirror.cogentco.com/pub/apache/$1";
 241                 push @mirrors, "http://mirror.navercorp.com/apache/$1";
 242                 push @mirrors, "http://ftp.jaist.ac.jp/pub/apache/$1";
 243                 push @mirrors, "ftp://apache.cs.utah.edu/apache.org/$1";
 244                 push @mirrors, "ftp://apache.mirrors.ovh.net/ftp.apache.org/dist/$1";
 245         } elsif ($mirror =~ /^\@GITHUB\/(.+)$/) {
 246                 # give github a few more tries (different mirrors)
 247                 for (1 .. 5) {
 248                         push @mirrors, "https://raw.githubusercontent.com/$1";
 249                 }
 250         } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 251                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnu/$1";
 252                 push @mirrors, "https://mirror.netcologne.de/gnu/$1";
 253                 push @mirrors, "http://ftp.kddilabs.jp/GNU/gnu/$1";
 254                 push @mirrors, "http://www.nic.funet.fi/pub/gnu/gnu/$1";
 255                 push @mirrors, "http://mirror.internode.on.net/pub/gnu/$1";
 256                 push @mirrors, "http://mirror.navercorp.com/gnu/$1";
 257                 push @mirrors, "ftp://mirrors.rit.edu/gnu/$1";
 258                 push @mirrors, "ftp://download.xs4all.nl/pub/gnu/$1";
 259                 push @mirrors, "https://ftp.gnu.org/gnu/$1";
 260         } elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
 261                 push @mirrors, "https://mirror.netcologne.de/savannah/$1";
 262                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/nongnu/$1";
 263                 push @mirrors, "http://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
 264                 push @mirrors, "http://nongnu.uib.no/$1";
 265                 push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
 266                 push @mirrors, "ftp://cdimage.debian.org/mirror/gnu.org/savannah/$1";
 267                 push @mirrors, "ftp://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
 268         } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
 269                 my @extra = ( $1 );
 270                 if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
 271                         push @extra, "$extra[0]/testing";
 272                 } elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
 273                         push @extra, "$extra[0]/longterm/v$1";
 274                 }
 275                 foreach my $dir (@extra) {
 276                         push @mirrors, "https://cdn.kernel.org/pub/$dir";
 277                         push @mirrors, "https://download.xs4all.nl/ftp.kernel.org/pub/$dir";
 278                         push @mirrors, "https://mirrors.mit.edu/kernel/$dir";
 279                         push @mirrors, "http://ftp.nara.wide.ad.jp/pub/kernel.org/$dir";
 280                         push @mirrors, "http://www.ring.gr.jp/archives/linux/kernel.org/$dir";
 281                         push @mirrors, "ftp://ftp.riken.jp/Linux/kernel.org/$dir";
 282                         push @mirrors, "ftp://www.mirrorservice.org/sites/ftp.kernel.org/pub/$dir";
 283                 }
 284         } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
 285                 push @mirrors, "https://download.gnome.org/sources/$1";
 286                 push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnome/sources/$1";
 287                 push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
 288                 push @mirrors, "http://ftp.kaist.ac.kr/gnome/sources/$1";
 289                 push @mirrors, "http://www.mirrorservice.org/sites/ftp.gnome.org/pub/GNOME/sources/$1";
 290                 push @mirrors, "http://mirror.internode.on.net/pub/gnome/sources/$1";
 291                 push @mirrors, "http://ftp.belnet.be/ftp.gnome.org/sources/$1";
 292                 push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
 293                 push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
 294         } else {
 295                 push @mirrors, $mirror;
 296         }
 297 }
 298
 299 push @mirrors, 'https://sources.cdn.openwrt.org';
 300 push @mirrors, 'https://sources.openwrt.org';
 301 push @mirrors, 'https://mirror2.openwrt.org/sources';
 302
 303 if (-f "$target/$filename") {
 304         $hash_cmd and do {
 305                 if (system("cat '$target/$filename' | $hash_cmd > '$target/$filename.hash'")) {
 306                         die "Failed to generate hash for $filename\n";
 307                 }
 308
 309                 my $sum = `cat "$target/$filename.hash"`;
 310                 $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 311                 $sum = $1;
 312
 313                 cleanup();
 314                 exit 0 if $sum eq $file_hash;
 315
 316                 die "Hash of the local file $filename does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 317                 unlink "$target/$filename";
 318         };
 319 }
 320
 321 while (!-f "$target/$filename") {
 322         my $mirror = shift @mirrors;
 323         $mirror or die "No more mirrors to try - giving up.\n";
 324
 325         download($mirror, $url_filename, @mirrors);
 326         if (!-f "$target/$filename" && $url_filename ne $filename) {
 327                 download($mirror, $filename, @mirrors);
 328         }
 329         @mirrors=();
 330 }
 331
 332 $SIG{INT} = \&cleanup;