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059ec3d9 PH |
1 | #! /bin/sh |
2 | # $Cambridge: exim/src/src/exinext.src,v 1.1 2004/10/07 10:39:01 ph10 Exp $ | |
3 | ||
4 | # Copyright (c) 1996-2004 University of Cambridge. | |
5 | # See the file NOTICE for conditions of use and distribution. | |
6 | ||
7 | # Except when they appear in comments, the following placeholders in this | |
8 | # source are replaced when it is turned into a runnable script: | |
9 | # | |
10 | # CONFIGURE_FILE_USE_NODE | |
11 | # CONFIGURE_FILE | |
12 | # BIN_DIRECTORY | |
13 | ||
14 | # PROCESSED_FLAG | |
15 | ||
16 | # A shell+perl script to fish out the next retry time for a given domain; | |
17 | # it first calls exim to find out which hosts are set up for that domain and | |
18 | # then fishes out the retry data for each one. | |
19 | ||
20 | # For testing the selection and formatting logic, and perhaps for use in | |
21 | # special cases, the script can have an argument -C <filename> to specify | |
22 | # the use of an alternate Exim configuration file. It may also have any number | |
23 | # of -D options to set macros that are passed to exim. | |
24 | ||
25 | config= | |
26 | eximmacdef= | |
27 | exim_path= | |
28 | ||
29 | if expr $1 : '\-' >/dev/null ; then | |
30 | while expr $1 : '\-' >/dev/null ; do | |
31 | if [ "$1" = "-C" ]; then | |
32 | config=$2 | |
33 | shift | |
34 | shift | |
35 | elif expr $1 : '\-D' >/dev/null ; then | |
36 | eximmacdef="$eximmacdef $1" | |
37 | if expr $1 : '\-DEXIM_PATH=' >/dev/null ; then | |
38 | exim_path=`expr $1 : '\-DEXIM_PATH=\(.*\)'` | |
39 | fi | |
40 | shift | |
41 | else | |
42 | break | |
43 | fi | |
44 | done | |
45 | fi | |
46 | ||
47 | # We need to save the script's argument because in the absence of -C we need to | |
48 | # use shell arguments for sorting out the configuration file name. | |
49 | ||
50 | argone=$1 | |
51 | ||
52 | # This is the normal case when no config file or macros are specified | |
53 | ||
54 | if [ "$config" = "" ]; then | |
55 | # See if this installation is using the esoteric "USE_NODE" feature of Exim, | |
56 | # in which it uses the host's name as a suffix for the configuration file name. | |
57 | ||
58 | if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then | |
59 | hostsuffix=.`uname -n` | |
60 | fi | |
61 | ||
62 | # Now find the configuration file name. This has got complicated because | |
63 | # CONFIGURE_FILE may now be a list of files. The one that is used is the first | |
64 | # one that exists. Mimic the code in readconf.c by testing first for the | |
65 | # suffixed file in each case. | |
66 | ||
67 | set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End | |
68 | CONFIGURE_FILE | |
69 | End | |
70 | ` | |
71 | while [ "$config" = "" -a $# -gt 0 ] ; do | |
72 | if [ -f "$1$hostsuffix" ] ; then | |
73 | config="$1$hostsuffix" | |
74 | elif [ -f "$1" ] ; then | |
75 | config="$1" | |
76 | fi | |
77 | shift | |
78 | done | |
79 | fi | |
80 | ||
81 | # Determine where the spool directory is. Search for an exim_path setting | |
82 | # in the configure file; otherwise use the bin directory. Call that version of | |
83 | # Exim to find the spool directory and the qualify domain. BEWARE: a tab | |
84 | # character is needed in the command below. It has had a nasty tendency to get | |
85 | # lost in the past. Use a variable to hold a space and a tab to keep the tab in | |
86 | # one place. | |
87 | ||
88 | st=' ' | |
89 | ||
90 | if [ "$exim_path" = "" ]; then | |
91 | exim_path=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"` | |
92 | fi | |
93 | ||
94 | if test "$exim_path" = ""; then exim_path=BIN_DIRECTORY/exim; fi | |
95 | spool_directory=`$exim_path $eximmacdef -C $config -bP spool_directory | sed 's/.*=[ ]*//'` | |
96 | qualify_domain=`$exim_path $eximmacdef -C $config -bP qualify_domain | sed 's/.*=[ ]*//'` | |
97 | ||
98 | # Now do the job. Perl uses $ so frequently that we don't want to have to | |
99 | # escape them all from the shell, so pass in shell variable values as | |
100 | # arguments. | |
101 | ||
102 | # 16-May-1996 Fixed it to do better if routing fails to complete. | |
103 | # Improved the format of the output. | |
104 | # 10-Jun-1996 Complain if no argument given. | |
105 | # 02-Aug-1996 Lower case the domain. | |
106 | # 14-Jan-1999 Add subject to want list even if remote host found, so as to | |
107 | # pick up routing delays after temporary recipient errors. | |
108 | # Also add unqualified subject if it looks like a message id. | |
109 | # 01-Apr-2004 Add the -C feature for testing | |
110 | ||
111 | if [ "$argone" = "" ]; then | |
112 | echo "Usage: exinext <address>|<domain>|<local-part>" | |
113 | exit 1 | |
114 | fi | |
115 | ||
116 | perl - $exim_path "$eximmacdef" $argone $spool_directory $qualify_domain <<'End' | |
117 | ||
118 | # Name the arguments | |
119 | ||
120 | $exim = $ARGV[0]; | |
121 | $eximmacdef = $ARGV[1]; | |
122 | $subject = $ARGV[2]; | |
123 | $spool = $ARGV[3]; | |
124 | $qualify = $ARGV[4]; | |
125 | ||
126 | # If the subject doesn't contain an @ then construct an address | |
127 | # for the domain, and ensure that in both cases the domain is | |
128 | # lower cased. | |
129 | ||
130 | $address = ($subject =~ /^([^\@]*)\@([^\@]*)$/)? | |
131 | "$1\@\L$2\E" : "User\@\L$subject\E"; | |
132 | ||
133 | # Run Exim to get a list of hosts for the given domain; for | |
134 | # each one construct the appropriate retry key. | |
135 | ||
136 | open(LIST, "$exim -v -bt $address |") || | |
137 | die "can't run exim to route $address"; | |
138 | ||
139 | while (<LIST>) | |
140 | { | |
141 | chop; | |
142 | push(@list, $_) if s/\s*host (\S+)\s+\[(.+)\].*/$1:$2/; | |
143 | print "$_\n" if /cannot be resolved/; | |
144 | } | |
145 | close(LIST); | |
146 | ||
147 | # If there were no hosts, assume that what was given was a local | |
148 | # username, unless it contains an @, and construct a suitable retry | |
149 | # key for that. Also, if it looks like a message id, search for that | |
150 | # as well, so as to pick up message-specific retry data. | |
151 | ||
152 | if (scalar(@list) == 0) | |
153 | { | |
154 | push(@list, $subject) if $subject =~ /^\w{6}-\w{6}-\w{2}$/; | |
155 | ||
156 | if ($subject !~ /\@/ && $subject !~ /\./) | |
157 | { | |
158 | push(@list, "$subject\@$qualify"); | |
159 | } | |
160 | else | |
161 | { | |
162 | print "No remote hosts found for $subject\n"; | |
163 | } | |
164 | } | |
165 | ||
166 | # Always search for the full address, even if hosts are found, in case | |
167 | # there is a routing delay caused by a temporary recipient error. | |
168 | ||
169 | push(@list, $subject); | |
170 | ||
171 | # Run exim_dumpdb to get out the retry data and pick off what we want | |
172 | ||
173 | open(DATA, "${exim}_dumpdb $spool retry |") || | |
174 | die "can't run exim_dumpdb"; | |
175 | ||
176 | while (<DATA>) | |
177 | { | |
178 | for ($i = 0; $i <= $#list; $i++) | |
179 | { | |
180 | if (/$list[$i]/) | |
181 | { | |
182 | $printed = 1; | |
183 | if (/^\s*T:[^:\s]*:/) | |
184 | { | |
185 | ($key,$error,$error2,$text) = /^\s*T:(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/; | |
186 | ||
187 | # Parsing the keys is a nightmare because of IPv6. The design of the | |
188 | # format for the keys is a complete shambles. All my fault (PH). But | |
189 | # I don't want to change it just for this purpose. If they key | |
190 | # contains more than 3 colons, we have an IPv6 address, because | |
191 | # an IPv6 address must contain at least two colons. | |
192 | ||
193 | # Deal with IPv4 addresses (3 colons or fewer) | |
194 | ||
195 | if ($key !~ /:([^:]*?:){3}/) | |
196 | { | |
197 | ($host,$ip,$port,$msgid) = $key =~ | |
198 | /^([^:]*):([^:]*)(?::([^:]*)(?::(\S*)|)|)/; | |
199 | } | |
200 | ||
201 | # Deal with IPv6 addresses; sorting out the colons is a complete | |
202 | # mess. We should be able to find the host name and IP address from | |
203 | # further in the message. That seems the easiest escape plan here. We | |
204 | # can use those to match the rest of the key. | |
205 | ||
206 | else | |
207 | { | |
208 | ($host,$ip) = $text =~ /host\s(\S+)\s\[([^]]+)\]/; | |
209 | if (defined $host) | |
210 | { | |
211 | ($port,$msgid) = $key =~ | |
212 | /^$host:$ip(?::([^:]*)(?::(\S*)|)|)/; | |
213 | } | |
214 | ||
215 | # This will probably be wrong... | |
216 | ||
217 | else | |
218 | { | |
219 | ($host,$ip) = $key =~ /([^:]*):(.*)/; | |
220 | } | |
221 | } | |
222 | ||
223 | printf("Transport: %s [%s]", $host, $ip); | |
224 | print ":$port" if defined $port; | |
225 | print " $msgid" if defined $msgid; | |
226 | print " error $error: $text\n"; | |
227 | } | |
228 | ||
229 | else | |
230 | { | |
231 | ($type,$domain,$error,$error2,$text) = | |
232 | /^\s*(\S):(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/; | |
233 | $type = ($type eq 'R')? "Route: " : | |
234 | ($type eq 'T')? "Transport: " : ""; | |
235 | print "$type$domain error $error: $text\n"; | |
236 | } | |
237 | $_ = <DATA>; | |
238 | ($first,$last,$next,$expired) = | |
239 | /^(\S+\s+\S+)\s+(\S+\s+\S+)\s+(\S+\s+\S+)\s*(\*?)/; | |
240 | print " first failed: $first\n"; | |
241 | print " last tried: $last\n"; | |
242 | print " next try at: $next\n"; | |
243 | print " past final cutoff time\n" if $expired eq "*"; | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | close(DATA); | |
249 | print "No retry data found for $subject\n" if !$printed; | |
250 | End | |
251 |