download.pl 6.0 KB

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  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. use strict;
  10. use warnings;
  11. use File::Basename;
  12. use File::Copy;
  13. use Text::ParseWords;
  14. @ARGV > 2 or die "Syntax: $0 <target dir> <filename> <hash> <url filename> [<mirror> ...]\n";
  15. my $url_filename;
  16. my $target = shift @ARGV;
  17. my $filename = shift @ARGV;
  18. my $file_hash = shift @ARGV;
  19. $url_filename = shift @ARGV unless $ARGV[0] =~ /:\/\//;
  20. my $scriptdir = dirname($0);
  21. my @mirrors;
  22. my $ok;
  23. $url_filename or $url_filename = $filename;
  24. sub localmirrors {
  25. my @mlist;
  26. open LM, "$scriptdir/localmirrors" and do {
  27. while (<LM>) {
  28. chomp $_;
  29. push @mlist, $_ if $_;
  30. }
  31. close LM;
  32. };
  33. open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
  34. while (<CONFIG>) {
  35. /^CONFIG_LOCALMIRROR="(.+)"/ and do {
  36. chomp;
  37. my @local_mirrors = split(/;/, $1);
  38. push @mlist, @local_mirrors;
  39. };
  40. }
  41. close CONFIG;
  42. };
  43. my $mirror = $ENV{'DOWNLOAD_MIRROR'};
  44. $mirror and push @mlist, split(/;/, $mirror);
  45. return @mlist;
  46. }
  47. sub which($) {
  48. my $prog = shift;
  49. my $res = `which $prog`;
  50. $res or return undef;
  51. $res =~ /^no / and return undef;
  52. $res =~ /not found/ and return undef;
  53. return $res;
  54. }
  55. sub hash_cmd() {
  56. my $len = length($file_hash);
  57. my $cmd;
  58. $len == 64 and return "mkhash sha256";
  59. $len == 32 and return "mkhash md5";
  60. return undef;
  61. }
  62. sub download_cmd($) {
  63. my $url = shift;
  64. my $have_curl = 0;
  65. if (open CURL, '-|', 'curl', '--version') {
  66. if (defined(my $line = readline CURL)) {
  67. $have_curl = 1 if $line =~ /^curl /;
  68. }
  69. close CURL;
  70. }
  71. return $have_curl
  72. ? (qw(curl -f --connect-timeout 20 --retry 5 --location), shellwords($ENV{CURL_OPTIONS} || ''), $url)
  73. : (qw(wget --tries=5 --timeout=20 --output-document=-), shellwords($ENV{WGET_OPTIONS} || ''), $url)
  74. ;
  75. }
  76. my $hash_cmd = hash_cmd();
  77. sub download
  78. {
  79. my $mirror = shift;
  80. $mirror =~ s!/$!!;
  81. if ($mirror =~ s!^file://!!) {
  82. if (! -d "$mirror") {
  83. print STDERR "Wrong local cache directory -$mirror-.\n";
  84. cleanup();
  85. return;
  86. }
  87. if (! -d "$target") {
  88. system("mkdir", "-p", "$target/");
  89. }
  90. if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
  91. print("Failed to search for $filename in $mirror\n");
  92. return;
  93. }
  94. my $link;
  95. while (defined(my $line = readline TMPDLS)) {
  96. chomp ($link = $line);
  97. if ($. > 1) {
  98. print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
  99. return;
  100. }
  101. }
  102. close TMPDLS;
  103. if (! $link) {
  104. print("No instances of $filename found in $mirror.\n");
  105. return;
  106. }
  107. print("Copying $filename from $link\n");
  108. copy($link, "$target/$filename.dl");
  109. $hash_cmd and do {
  110. if (system("cat '$target/$filename.dl' | $hash_cmd > '$target/$filename.hash'")) {
  111. print("Failed to generate hash for $filename\n");
  112. return;
  113. }
  114. };
  115. } else {
  116. my @cmd = download_cmd("$mirror/$url_filename");
  117. open(FETCH_FD, '-|', @cmd) or die "Cannot launch curl or wget.\n";
  118. $hash_cmd and do {
  119. open MD5SUM, "| $hash_cmd > '$target/$filename.hash'" or die "Cannot launch $hash_cmd.\n";
  120. };
  121. open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
  122. my $buffer;
  123. while (read FETCH_FD, $buffer, 1048576) {
  124. $hash_cmd and print MD5SUM $buffer;
  125. print OUTPUT $buffer;
  126. }
  127. $hash_cmd and close MD5SUM;
  128. close FETCH_FD;
  129. close OUTPUT;
  130. if ($? >> 8) {
  131. print STDERR "Download failed.\n";
  132. cleanup();
  133. return;
  134. }
  135. }
  136. $hash_cmd and do {
  137. my $sum = `cat "$target/$filename.hash"`;
  138. $sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
  139. $sum = $1;
  140. if ($sum ne $file_hash) {
  141. print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $file_hash) - deleting download.\n";
  142. cleanup();
  143. return;
  144. }
  145. };
  146. unlink "$target/$filename";
  147. system("mv", "$target/$filename.dl", "$target/$filename");
  148. cleanup();
  149. }
  150. sub cleanup
  151. {
  152. unlink "$target/$filename.dl";
  153. unlink "$target/$filename.hash";
  154. }
  155. @mirrors = localmirrors();
  156. foreach my $mirror (@ARGV) {
  157. if ($mirror =~ /^\@SF\/(.+)$/) {
  158. # give sourceforge a few more tries, because it redirects to different mirrors
  159. #for (1 .. 5) {
  160. # push @mirrors, "http://downloads.sourceforge.net/$1";
  161. #}
  162. } elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
  163. push @mirrors, "https://mirror.netcologne.de/apache.org/$1";
  164. push @mirrors, "https://mirror.aarnet.edu.au/pub/apache/$1";
  165. } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
  166. push @mirrors, "https://librecmc.org/pub/gnu/$1";
  167. push @mirrors, "https://mirrors.rit.edu/gnu/$1";
  168. push @mirrors, "https://mirror.netcologne.de/gnu/$1";
  169. } elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
  170. push @mirrors, "https://mirror.netcologne.de/savannah/$1";
  171. } elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
  172. my @extra = ( $1 );
  173. if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
  174. push @extra, "$extra[0]/testing";
  175. } elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
  176. push @extra, "$extra[0]/longterm/v$1";
  177. }
  178. foreach my $dir (@extra) {
  179. push @mirrors, "https://cdn.kernel.org/pub/$dir";
  180. push @mirrors, "https://mirror.rackspace.com/kernel.org/$dir";
  181. }
  182. } elsif ($mirror =~ /^\@KERNEL_LIBRE\/(.+)$/) {
  183. my @extra = ( $1 );
  184. if ($filename =~ /linux-libre-\d+\.\d+(?:\.\d+)?-rc-gnu/) {
  185. push @extra, "$extra[0]/testing";
  186. } elsif ($filename =~ /linux-libre-(\d+\.\d+(?:\.\d+)?)-gnu/) {
  187. push @extra, "$extra[0]/v$1";
  188. }
  189. foreach my $dir (@extra) {
  190. push @mirrors, "https://linux-libre.fsfla.org/pub/linux-libre/releases/$dir";
  191. }
  192. } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
  193. push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnome/sources/$1";
  194. }
  195. else {
  196. push @mirrors, $mirror;
  197. }
  198. }
  199. push @mirrors, 'https://librecmc.org/librecmc/downloads/sources/v1.4';
  200. while (!-f "$target/$filename") {
  201. my $mirror = shift @mirrors;
  202. $mirror or die "No more mirrors to try - giving up.\n";
  203. download($mirror);
  204. }
  205. $SIG{INT} = \&cleanup;