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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
package Echolot::Tools;
# (c) 2002 Peter Palfrader <peter@palfrader.org>
# $Id: Tools.pm,v 1.8 2002/08/14 22:54:20 weasel Exp $
#
=pod
=head1 Name
Echolot::Tools - Tools for echolot
=head1 DESCRIPTION
=cut
use strict;
use Carp qw{cluck};
use HTML::Template;
use Digest::MD5 qw{};
sub hash($) {
my ($data) = @_;
($data) = $data =~ m/(.*)/s; # untaint
my $hash = Digest::MD5::md5_hex($data);
return $hash;
};
sub make_random($;%) {
my ($length, %args) = @_;
my $random;
open (FH, Echolot::Config::get()->{'dev_random'}) or
cluck("Cannot open ".Echolot::Config::get()->{'dev_random'}." for reading: $!"),
return 0;
read(FH, $random, $length) or
cluck("Cannot read from ".Echolot::Config::get()->{'dev_random'}.": $!"),
return 0;
close (FH) or
cluck("Cannot close ".Echolot::Config::get()->{'dev_random'}.": $!"),
return 0;
$random = unpack('H*', $random)
if ($args{'armor'} == 1);
return $random;
};
sub make_mac($) {
my ($token) = @_;
my $mac = hash($token . Echolot::Globals::get()->{'storage'}->get_secret() );
return $mac;
};
sub makeShortNumHash($) {
my ($text) = @_;
my $hash = Echolot::Tools::make_mac($text);
$hash = substr($hash, 0, 4);
my $sum = hex($hash);
return $sum;
};
sub verify_mac($$) {
my ($token, $mac) = @_;
return (hash($token . Echolot::Globals::get()->{'storage'}->get_secret() ) eq $mac);
};
sub make_address($) {
my ($subsystem) = @_;
my $token = $subsystem.'='.time();
my $hash = hash($token . Echolot::Globals::get()->{'storage'}->get_secret() );
my $cut_hash = substr($hash, 0, Echolot::Config::get()->{'hash_len'});
my $complete_token = $token.'='.$cut_hash;
my $address = Echolot::Config::get()->{'my_localpart'}.
Echolot::Config::get()->{'recipient_delimiter'}.
$complete_token.
'@'.
Echolot::Config::get()->{'my_domain'};
return $address;
};
sub verify_address_tokens($) {
my ($address) = @_;
my $delimiter = quotemeta( Echolot::Config::get()->{'recipient_delimiter'});
my ($type, $timestamp, $received_hash) = $address =~ /$delimiter (.*) = (\d+) = ([0-9a-f]+) @/x or
cluck("Could not parse to header '$address'"),
return undef;
my $token = $type.'='.$timestamp;
my $hash = Echolot::Tools::hash($token . Echolot::Globals::get()->{'storage'}->get_secret() );
my $cut_hash = substr($hash, 0, Echolot::Config::get()->{'hash_len'});
($cut_hash eq $received_hash) or
cluck("Hash mismatch in '$address'"),
return undef;
return
{ timestamp => $timestamp,
token => $type };
};
sub send_message(%) {
my (%args) = @_;
defined($args{'To'}) or
cluck ('No recipient address given'),
return 0;
$args{'Subject'} = '' unless (defined $args{'Subject'});
$args{'Body'} = '' unless (defined $args{'Body'});
if (defined $args{'Token'}) {
$args{'From'} = make_address( $args{'Token'} );
} else {
$args{'From'} =
Echolot::Config::get()->{'my_localpart'}.
'@'.
Echolot::Config::get()->{'my_domain'};
};
$args{'Subject'} = 'none' unless (defined $args{'Subject'});
my @lines = map { $_."\n" } split (/\r?\n/, $args{'Body'});
open(SENDMAIL, '|'.Echolot::Config::get()->{'sendmail'}.' -f '.$args{'From'}.' -t')
or cluck("Cannot run sendmail: $!"),
return 0;
printf SENDMAIL "From: %s\n", $args{'From'};
printf SENDMAIL "To: %s\n", $args{'To'};
printf SENDMAIL "Subject: %s\n", $args{'Subject'};
printf SENDMAIL "\n";
for my $line (@lines) {
print SENDMAIL $line;
};
close SENDMAIL;
return 1;
};
sub make_monthname($) {
my ($month) = @_;
my @MON = qw{Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec};
return $MON[$month];
};
sub make_dayname($) {
my ($day) = @_;
my @WDAY = qw{Sun Mon Tue Wed Thu Fri Sat};
return $WDAY[$day];
};
sub date822($) {
my ($date) = @_;
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday) = gmtime($date);
# 14 Aug 2002 17:11:12 +0100
return sprintf("%s, %02d %s %d %02d:%02d:%02d +0000",
make_dayname($wday),
$mday,
make_monthname($mon),
$year + 1900,
$hour,
$min,
$sec);
};
sub write_meta_information($%) {
my ($file, %data) = @_;
return 1 unless Echolot::Config::get()->{'write_meta_files'};
$file .= Echolot::Config::get()->{'meta_extension'};
open (F, ">$file") or
cluck ("Cannot open $file: $!"),
return 0;
if (defined $data{'Expires'}) {
my $date = date822($data{'Expires'});
print F "Expires: $date\n";
};
close(F);
return 1;
};
sub write_HTML_file($$;$%) {
my ($file, $template_file, $expire, %templateparams) = @_;
my $template = HTML::Template->new(
filename => $template_file,
strict => 0,
die_on_bad_params => 0,
global_vars => 1 );
$template->param ( %templateparams );
$template->param ( CURRENT_TIMESTAMP => scalar gmtime() );
$template->param ( SITE_NAME => Echolot::Config::get()->{'sitename'} );
$template->param ( seperate_rlist => Echolot::Config::get()->{'seperate_rlists'} );
$template->param ( combined_list => Echolot::Config::get()->{'combined_list'} );
$template->param ( thesaurus => Echolot::Config::get()->{'thesaurus'} );
$template->param ( version => Echolot::Globals::get()->{'version'} );
$template->param ( expires => date822( time + $expire ));
open(F, '>'.$file) or
cluck("Cannot open $file: $!\n"),
return 0;
print F $template->output() or
cluck("Cannot print to $file: $!\n"),
return 0;
close (F) or
cluck("Cannot close $file: $!\n"),
return 0;
if (defined $expire) {
write_meta_information($file,
Expires => time + $expire) or
cluck ("Error while writing meta information for $file"),
return 0;
};
return 1;
};
1;
# vim: set ts=4 shiftwidth=4:
|
