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