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
|
#!/usr/bin/perl
#
# Try to connect to an IMAP server, and issue a STARTTLS command, and
# wait for the right output.
#
# For use with "mon".
#
# Arguments are "-p port -t timeout host [host...]"
#
# Adapted from "imap.monitor" by
# David Nolan, vitroth@cmu.edu
#
# Which in turn was adapted from 'http.monitor' by
# Jim Trocki, trockij@transmeta.com
#
# http.monitor was written by
#
# Jon Meek
# American Cyanamid Company
# Princeton, NJ
#
#
# $Id: imap-starttls.monitor,v 1.1 2005/08/20 15:20:57 vitroth Exp $
#
# Copyright (C) 1998, Jim Trocki
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
use Getopt::Std;
use Net::SSLeay::Handle qw/shutdown/;
use English;
getopts ("p:t:");
$PORT = $opt_p || 143;
$TIMEOUT = $opt_t || 30;
@failures = ();
foreach $host (@ARGV) {
if (! &imapGET($host, $PORT)) {
push (@failures, $host);
}
}
if (@failures == 0) {
exit 0;
}
print join (" ", sort @failures), "\n\n", join ("\n", @longerr), "\n";
exit 1;
sub imapGET {
use Socket;
use IO::Socket::INET;
use Sys::Hostname;
use Symbol;
my($Server, $Port) = @_;
my($ServerOK, $TheContent);
$ServerOK = 0;
$TheContent = '';
$Path = '/';
###############################################################
eval {
local $SIG{ALRM} = sub { die "Timeout Alarm" };
alarm $TIMEOUT;
my $socket = gensym; # Necessary to allow $socket and $sslsocket to be used multiple times for
my $sslsocket = gensym; # the Net::SSLeay::Handle tie
$result = &OpenSocket($socket, $Server, $Port); # Open a connection to the server
if ($result == 0) { # Failure to open the socket
push @longerr, "$Server: Unable to connect";
return '';
}
$in = <$socket>;
if ($in !~ /^\* (OK|PREAUTH|BYE)/) {
alarm 0;
push @longerr, "$Server: No IMAP banner received";
return 0;
}
print $socket "A1 STARTTLS\r\n";
$in = <$socket>;
if ($in !~ /^A1 OK/) {
alarm 0;
push @longerr, "$Server: STARTTLS request denied";
return 0;
}
tie(*$sslsocket, "Net::SSLeay::Handle", $socket);
print $sslsocket "A1 LOGOUT\r\n";
while (defined($in=<$sslsocket>)) {
if ($in =~ /^A1 OK/) {
$ServerOK = 1;
last;
}
}
if (!$ServerOK) {
push @longerr, "$Server: No response to logout, STARTTLS negotiation failed?";
}
close($sslsocket);
alarm 0; # Cancel the alarm
};
if ($EVAL_ERROR and ($EVAL_ERROR =~ /^Timeout Alarm/)) {
push @longerr, "$Server: **** Time Out\n";
return 0;
} elsif ($EVAL_ERROR) {
push @longerr, "$Server: $EVAL_ERROR";
return 0;
}
return $ServerOK;
}
sub OpenSocket {
#
# Make a Berkeley socket connection between this program and a TCP port
# on another (or this) host. Port can be a number or a named service
#
local($socket, $OtherHostname, $Port) = @_;
local($OurHostname, $sockaddr, $name, $aliases, $proto, $type, $len,
$ThisAddr, $that);
$OurHostname = &hostname;
($name, $aliases, $proto) = getprotobyname('tcp');
($name, $aliases, $Port) = getservbyname($Port, 'tcp') unless $Port =~ /^\d+$/;
($name, $aliases, $type, $len, $ThisAddr) = gethostbyname($OurHostname);
($name, $aliases, $type, $len, $OtherHostAddr) = gethostbyname($OtherHostname);
my $that = sockaddr_in ($Port, $OtherHostAddr);
$result = socket($socket, &PF_INET, &SOCK_STREAM, $proto) || return undef;
$result = connect($socket, $that) || return undef;
select($socket); $| = 1; select(STDOUT); # set S to be un-buffered
return 1; # success
}
|
