strip trailing / from download urls
[openwrt/svn-archive/archive.git] / scripts / download.pl
1 #!/usr/bin/perl
2 #
3 # Copyright (C) 2006 OpenWrt.org
4 #
5 # This is free software, licensed under the GNU General Public License v2.
6 # See /LICENSE for more information.
7 #
8
9 use strict;
10 use warnings;
11
12 my $target = shift @ARGV;
13 my $filename = shift @ARGV;
14 my $md5sum = shift @ARGV;
15 my @mirrors;
16
17 my $ok;
18
19 @ARGV > 0 or die "Syntax: $0 <target dir> <filename> <md5sum> <mirror> [<mirror> ...]\n";
20
21 sub which($) {
22 my $prog = shift;
23 my $res = `which $prog`;
24 $res or return undef;
25 $res =~ /^no / and return undef;
26 $res =~ /not found/ and return undef;
27 return $res;
28 }
29
30 my $md5cmd = which("md5sum");
31 $md5cmd or $md5cmd = which("md5");
32 $md5cmd or die 'no md5 checksum program found, please install md5 or md5sum';
33 chomp $md5cmd;
34
35 sub download
36 {
37 my $mirror = shift;
38 my $options = $ENV{WGET_OPTIONS};
39 $options or $options = "";
40
41 $mirror =~ s/\/$//;
42 open WGET, "wget -t1 --timeout=20 $options -O- \"$mirror/$filename\" |" or die "Cannot launch wget.\n";
43 open MD5SUM, "| $md5cmd > \"$target/$filename.md5sum\"" or die "Cannot launch md5sum.\n";
44 open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
45 my $buffer;
46 while (read WGET, $buffer, 1048576) {
47 print MD5SUM $buffer;
48 print OUTPUT $buffer;
49 }
50 close MD5SUM;
51 close WGET;
52 close OUTPUT;
53
54 if (($? >> 8) != 0 ) {
55 print STDERR "Download failed.\n";
56 cleanup();
57 return;
58 }
59
60 my $sum = `cat "$target/$filename.md5sum"`;
61 $sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
62 $sum = $1;
63
64 if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
65 print STDERR "MD5 sum of the downloaded file does not match - deleting download.\n";
66 cleanup();
67 return;
68 }
69
70 unlink "$target/$filename";
71 system("mv \"$target/$filename.dl\" \"$target/$filename\"");
72 cleanup();
73 }
74
75 sub cleanup
76 {
77 unlink "$target/$filename.dl";
78 unlink "$target/$filename.md5sum";
79 }
80
81 foreach my $mirror (@ARGV) {
82 if ($mirror =~ /^\@SF\/(.+)$/) {
83 my $sfpath = $1;
84 open SF, "wget -t1 -q -O- 'http://prdownloads.sourceforge.net/$sfpath/$filename' |";
85 while (<SF>) {
86 /RADIO NAME=use_default VALUE=(\w+) OnClick="form\.submit\(\)">/ or
87 /type="radio" name="use_default" value="(\w+)" onclick="form\.submit\(\)"\/>/ and do {
88 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
89 };
90 /<a href="\/.+\?use_mirror=(\w+)"><b>Download/ and do {
91 push @mirrors, "http://$1.dl.sourceforge.net/sourceforge/$sfpath";
92 };
93 }
94 push @mirrors, "http://dl.sourceforge.net/sourceforge/$sfpath";
95 close SF;
96 } elsif ($mirror =~ /^\@GNU\/(.+)$/) {
97 my $gnupath = $1;
98 push @mirrors, "ftp://ftp.gnu.org/gnu/$gnupath";
99 push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$gnupath";
100 push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$gnupath";
101 push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$gnupath";
102 push @mirrors, "ftp://ftp.uu.net/archive/systems/gnu/$gnupath";
103 push @mirrors, "ftp://ftp.eu.uu.net/pub/gnu/$gnupath";
104 push @mirrors, "ftp://ftp.leo.org/pub/comp/os/unix/gnu/$gnupath";
105 push @mirrors, "ftp://ftp.digex.net/pub/gnu/$gnupath";
106 } else {
107 push @mirrors, $mirror;
108 }
109 }
110
111 #push @mirrors, 'http://mirror1.openwrt.org';
112 push @mirrors, 'http://mirror2.openwrt.org/sources';
113 push @mirrors, 'http://downloads.openwrt.org/sources';
114
115 while (!$ok) {
116 my $mirror = shift @mirrors;
117 $mirror or die "No more mirrors to try - giving up.\n";
118
119 download($mirror);
120 -f "$target/$filename" and $ok = 1;
121 }
122
123 $SIG{INT} = \&cleanup;
124