summaryrefslogtreecommitdiff
path: root/scripts/download.pl
blob: 6f28237af8c381efce0ad7e5e61939f571c312b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
#!/usr/bin/env perl
# 
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

use strict;
use warnings;
use File::Basename;
use File::Copy;

@ARGV > 2 or die "Syntax: $0 <target dir> <filename> <md5sum> <url filename> [<mirror> ...]\n";

my $url_filename;
my $target = shift @ARGV;
my $filename = shift @ARGV;
my $md5sum = shift @ARGV;
$url_filename = shift @ARGV unless $ARGV[0] =~ /:\/\//;
my $scriptdir = dirname($0);
my @mirrors;
my $ok;

$url_filename or $url_filename = $filename;

sub localmirrors {
	my @mlist;
	open LM, "$scriptdir/localmirrors" and do {
	    while (<LM>) {
			chomp $_;
			push @mlist, $_ if $_;
		}
		close LM;
	};
	open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
		while (<CONFIG>) {
			/^CONFIG_LOCALMIRROR="(.+)"/ and do {
				chomp;
				my @local_mirrors = split(/;/, $1);
				push @mlist, @local_mirrors;
			};
		}
		close CONFIG;
	};

	my $mirror = $ENV{'DOWNLOAD_MIRROR'};
	$mirror and push @mlist, split(/;/, $mirror);

	return @mlist;
}

sub which($) {
	my $prog = shift;
	my $res = `which $prog`;
	$res or return undef;
	$res =~ /^no / and return undef;
	$res =~ /not found/ and return undef;
	return $res;
}

my $md5cmd = which("md5sum") || which("md5") || die 'no md5 checksum program found, please install md5 or md5sum';
chomp $md5cmd;

sub download
{
	my $mirror = shift;
	my $options = $ENV{WGET_OPTIONS} || "";

	$mirror =~ s!/$!!;

	if ($mirror =~ s!^file://!!) {
		if (! -d "$mirror") {
			print STDERR "Wrong local cache directory -$mirror-.\n";
			cleanup();
			return;
		}

		if (! -d "$target") {
			system("mkdir", "-p", "$target/");
		}

		if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
			print("Failed to search for $filename in $mirror\n");
			return;
		}

		my $link;

		while (defined(my $line = readline TMPDLS)) {
			chomp ($link = $line);
			if ($. > 1) {
				print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
				return;
			}
		}

		close TMPDLS;

		if (! $link) {
			print("No instances of $filename found in $mirror.\n");
			return;
		}

		print("Copying $filename from $link\n");
		copy($link, "$target/$filename.dl");

		if (system("$md5cmd '$target/$filename.dl' > '$target/$filename.md5sum'")) {
			print("Failed to generate md5 sum for $filename\n");
			return;
		}
	} else {
		open WGET, "wget -t5 --timeout=20 --no-check-certificate $options -O- '$mirror/$url_filename' |" or die "Cannot launch wget.\n";
		open MD5SUM, "| $md5cmd > '$target/$filename.md5sum'" or die "Cannot launch md5sum.\n";
		open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
		my $buffer;
		while (read WGET, $buffer, 1048576) {
			print MD5SUM $buffer;
			print OUTPUT $buffer;
		}
		close MD5SUM;
		close WGET;
		close OUTPUT;

		if ($? >> 8) {
			print STDERR "Download failed.\n";
			cleanup();
			return;
		}
	}

	my $sum = `cat "$target/$filename.md5sum"`;
	$sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
	$sum = $1;

	if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
		print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $md5sum) - deleting download.\n";
		cleanup();
		return;
	}

	unlink "$target/$filename";
	system("mv", "$target/$filename.dl", "$target/$filename");
	cleanup();
}

sub cleanup
{
	unlink "$target/$filename.dl";
	unlink "$target/$filename.md5sum";
}

@mirrors = localmirrors();

foreach my $mirror (@ARGV) {
	if ($mirror =~ /^\@SF\/(.+)$/) {
		# give sourceforge a few more tries, because it redirects to different mirrors
		for (1 .. 5) {
			push @mirrors, "http://downloads.sourceforge.net/$1";
		}
	} elsif ($mirror =~ /^\@GNU\/(.+)$/) {
		push @mirrors, "http://ftpmirror.gnu.org/$1";
		push @mirrors, "http://ftp.gnu.org/pub/gnu/$1";
		push @mirrors, "ftp://ftp.belnet.be/mirror/ftp.gnu.org/gnu/$1";
		push @mirrors, "ftp://ftp.mirror.nl/pub/mirror/gnu/$1";
		push @mirrors, "http://mirror.switch.ch/ftp/mirror/gnu/$1";
	} elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
		push @mirrors, "http://download.savannah.gnu.org/releases/$1";
		push @mirrors, "http://nongnu.uib.no/$1";
		push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
		push @mirrors, "http://download-mirror.savannah.gnu.org/releases/$1";
	} elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
		my @extra = ( $1 );
		if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
			push @extra, "$extra[0]/testing";
		} elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
			push @extra, "$extra[0]/longterm/v$1";
		}		
		foreach my $dir (@extra) {
			push @mirrors, "https://kernel.org/pub/$dir";
			push @mirrors, "ftp://kernel.org/pub/$dir";
		}
    } elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
		push @mirrors, "http://ftp.gnome.org/pub/GNOME/sources/$1";
		push @mirrors, "http://www.mirrorservice.org/sites/ftp.gnome.org/pub/GNOME/sources/$1";
		push @mirrors, "http://fr2.rpmfind.net/linux/gnome.org/sources/$1";
		push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
		push @mirrors, "http://ftp.belnet.be/ftp.gnome.org/sources/$1";
		push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
		push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
    }
    else {
		push @mirrors, $mirror;
	}
}

#push @mirrors, 'http://mirror1.openwrt.org';
push @mirrors, 'http://mirror2.openwrt.org/sources';
push @mirrors, 'http://downloads.openwrt.org/sources';

while (!$ok) {
	my $mirror = shift @mirrors;
	$mirror or die "No more mirrors to try - giving up.\n";

	download($mirror);
	-f "$target/$filename" and $ok = 1;
}

$SIG{INT} = \&cleanup;