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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
#!/bin/sh
#------------------------------------------------------------------------
#
# $Sendmail: dynamic,v @sm_version@ @sm_date@ @sm_time@ cowboy Exp $
#
# Shell functions to handle dynamic network updates.
# Supports ppp, dhcp, ifup/down, etc.
#
# Copyright (c) 2004-@SM_CPYRT@ Richard Nelson. All Rights Reserved.
#
#------------------------------------------------------------------------
#
provider_m4='@sysconfdir@/mail/m4/provider.m4';
dialup_m4='@sysconfdir@/mail/m4/dialup.m4';
# Default values
SM_ignore=1;
SM_changed=0;
SM_delay=0;
SM_interface='';
SM_state='down';
SM_provider='';
SM_ip='';
SM_host='';
SM_debug=1;
# Path to other sendmail helpers
if [ -x ./update_sendmail ]; then
sm_path='.';
elif [ -x $(dirname $0)/update_sendmail ]; then
sm_path=$(dirname $0);
else
sm_path=@datadir@/sendmail;
fi;
# Bring in sendmail.conf for the network definitions
if [ ! -f @sysconfdir@/mail/sendmail.conf ]; then
if [ -x $sm_path/update_conf ]; then
$sm_path/update_conf;
fi;
fi;
DAEMON_NETMODE='Static';
DAEMON_NETIF='';
HANDS_OFF='No';
LOG_CMDS='No';
if [ -f @sysconfdir@/mail/sendmail.conf ]; then
. @sysconfdir@/mail/sendmail.conf;
fi;
# Record information on an interface and its status
update_interface() {
SM_interface="$1";
SM_reason="$2";
# Do absolutely nothing if they say so...
if [ "$HANDS_OFF" != 'No' ]; then
return;
fi;
if [ -z "$SM_interface" ]; then
SM_ignore=1;
return;
fi;
# Check to see if we care about this interface
for if in "$DAEMON_NETIF"; do
if [ "$if" = "$SM_interface" ]; then
SM_ignore=0;
break;
fi;
done;
case "$SM_reason" in
DOWN|EXPIRE|FAIL|RELEASE|STOP) # and TIMEOUT too ??
SM_state='down';
;;
UP|BOUND|RENEW|REBIND|REBOOT|TIMEOUT)
SM_state='up';
if [ "$SM_reason" = "BOUND" ]; then
SM_changed=1;
fi;
;;
esac;
# Mark what we're doing...
local msg="$SM_interface $SM_state $SM_provider $SM_ip $SM_host";
if [ "$LOG_CMDS" != 'No' ]; then
logger -i -p mail.debug -- "$0 update_interface: $msg";
fi;
};
# Record information about the upstream provider
update_provider() {
SM_provider="$1";
# Mark what we're doing...
local msg="$SM_interface $SM_state $SM_provider $SM_ip $SM_host";
if [ "$LOG_CMDS" != 'No' ]; then
logger -i -p mail.debug -- "$0 update_provider: $msg";
fi;
# Do absolutely nothing if they say so...
if [ "$HANDS_OFF" != 'No' ]; then
return;
fi;
if [ $SM_ignore != 0 ]; then
return;
fi;
# Add smarthost information (if any)...
# But not if provider.m4 is a link !
if [ -z "$SM_provider" ]; then
return;
fi;
if [ ! -e "@sysconfdir@/mail/peers/$SM_provider" ]; then
SM_provider='default';
fi;
if [ -e "@sysconfdir@/mail/peers/$SM_provider" ] \
&& [ ! -L "$provider_m4" ]; then
SM_changed=1;
cat <<-EOT > "$provider_m4";
LOCAL_CONFIG
#------------------------------------------------------------
#
# Dynamic provider updates from $0
#
# NOTE: the following line *MUST* be in @sysconfdir@/mail/sendmail.mc
dnl include(\`@sysconfdir@/mail/provider.m4')dnl
# You may also need to include this file in submit.mc !
#
# Provider information from @sysconfdir@/mail/peers/$SM_provider
EOT
cat "@sysconfdir@/mail/peers/$SM_provider" >> "$provider_m4";
cat <<-EOT >> "$provider_m4";
#------------------------------------------------------------
EOT
fi;
};
# Record information on an ip/host
update_host() {
SM_ip="$1";
# Mark what we're doing...
local msg="$SM_interface $SM_state $SM_provider $SM_ip $SM_host";
if [ "$LOG_CMDS" != 'No' ]; then
logger -i -p mail.debug -- "$0 update_host: $msg";
fi;
# Do absolutely nothing if they say so...
if [ "$HANDS_OFF" != 'No' ]; then
return;
fi;
if [ $SM_ignore != 0 ]; then
return;
fi;
if [ -z "$SM_ip" ]; then
return;
fi;
find_host;
# Add ip related information (if any)...
# But not if dialup.m4 is a link !
if [ ! -L "$dialup_m4" ]; then
SM_changed=1;
cat <<-EOT > "$dialup_m4";
LOCAL_CONFIG
#------------------------------------------------------------
#
# Dynamic host/ip updates from $0
#
# NOTE: the following line *MUST* be in @sysconfdir@/mail/sendmail.mc
dnl include(\`@sysconfdir@/mail/dialup.m4')dnl
# This should *NOT* be included in submit.mc !
#
# Make sure we accept mail as this ip (for bounces, etc)
Cw$SM_ip
EOT
if [ -n "$SM_host" ]; then
cat <<-EOT >> "$dialup_m4";
#
# Define our true hostname (from our ISP) - becomes \$j
define(\`confDOMAIN_NAME', \`$SM_host')dnl
#
# Make sure we accept mail as this name (for bounces, etc)
Cw$SM_host
#
# Add our hostname to class G for genericstable support
CG$SM_host
#------------------------------------------------------------
EOT
fi;
fi;
};
find_host() {
# Determine our fqdn from our ISP
maxloop=30;
cntr=0;
SM_host='';
until (test ! -z "$SM_host"); do
cntr=`expr $cntr + 1`;
if [ $cntr -gt $maxloop ]; then
SM_host='';
break;
fi;
rev=$(host $SM_ip);
SM_host=$(echo "$rev" | grep '^Name:' | awk '{print $2}');
if [ -z "$SM_host" ]; then
test=$(echo "$rev" | egrep -e 'not found:');
if [ -n "$test" ]; then
continue;
else
SM_host=${rev##*domain name pointer };
SM_host=${SM_host%.};
fi;
fi;
test=$(echo $SM_host | cut -d ' ' -f 1);
if [ "$test" = ";;" ]; then
:;
elif [ "$test" != "**" ]; then
break;
fi;
sleep 1s;
done;
echo "addr=$SM_ip, name=$SM_host";
};
update_sendmail() {
# Mark what we're doing...
local msg="$SM_interface $SM_state $SM_provider $SM_ip $SM_host";
if [ "$LOG_CMDS" != 'No' ]; then
logger -i -p mail.debug -- "$0 update_sendmail: $msg";
fi;
# Do absolutely nothing if they say so...
if [ "$HANDS_OFF" != 'No' ]; then
return;
fi;
if [ $SM_ignore != 0 ]; then
return;
fi;
# Check for a delayed restart (for DHCP)
case "$1" in
[Dd]*)
if [ "$SM_state" = 'up' ]; then
SM_delay=1;
fi;
;;
esac;
if [ "$SM_state" = 'down' ]; then
SM_changed=1;
cat <<-EOT > "$dialup_m4";
LOCAL_CONFIG
#------------------------------------------------------------
#
# $SM_interface is $SM_state
#
# NOTE: the following line *MUST* be in @sysconfdir@/mail/sendmail.mc
dnl include(\`@sysconfdir@/mail/dialup.m4')dnl
# This should *NOT* be included in submit.mc !
#
# sendmail is to only queue messages until connected again
define(\`confDELIVERY_MODE', \`deferred')dnl
#
# Allow the queue to age without carping every four hours
define(\`confTO_QUEUEWARN',\`1d')dnl
#
# Don't keep host status while the network is down
define(\`confHOST_STATUS_DIRECTORY')dnl
#------------------------------------------------------------
EOT
fi;
if [ $SM_changed = 1 ]; then
# Build a new sendmail.cf from sendmail.mc, including our address.
make -f @sysconfdir@/mail/Makefile sendmail.cf;
make -f @sysconfdir@/mail/Makefile;
# Purge any latent host status that might cause us to *NOT* send mail
if [ "$SM_state" = "up" ]; then
AM='-Am';
if [ ! -f @datadir@/sendmail/cf/feature/msp.m4 ]; then
AM='';
fi;
if [ -x @libexecdir@/sendmail ]; then
@libexecdir@/sendmail $AM -bH -O Timeout.hoststatus=1s;
fi;
fi;
# reload (but don't start) sendmail as needed
if [ $SM_delay = 0 ]; then
if [ -x @sysconfdir@/init.d/sendmail ]; then
@sysconfdir@/init.d/sendmail reload-if-running; # up, or down
fi;
fi;
fi;
# Process the sendmail queue
# (background so as to not defer other ip-up work)
# runq &
};
|
