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