3 # mhmail -- simple mail program
5 # This code is Copyright (c) 2012, by the authors of nmh. See the
6 # COPYRIGHT file in the root directory of the nmh distribution for
7 # complete copyright information.
9 # Emulation of compiled mhmail(1), with these differences:
10 # * Adds -send/-nosend, -headerfield, and -attach options.
11 # * Adds optional -to switch for recipient addresses.
12 # * Supports all post(8) (by default, without -profile) or send(1)
13 # (with -profile) options.
14 # * Optionally (with -profile) obeys the users profile, including
15 # AliasFile and send entries.
16 # * Instead of silently not sending an empty message, notifies user
17 # "mhmail: empty message not sent, use -body '' to force."
18 # * The compiled mhmail dropped a trailing newline from the -body argument.
19 # * Drops support for undocumented -queue option.
21 usage='Usage: mhmail [-t(o)] addrs ... [switches]
23 -at(tach) file [-at(tach) file] ...
27 -hea(derfield) name:value [-hea(derfield) name:value] ...
35 and all post(8)/send(1) switches
36 mhmail with no arguments is equivalent to inc'
39 nmhbindir=`cd "${bindir}" && pwd`
41 #### Checks for missing mandatory arguments.
43 if [ ${attacharg} -eq 1 ]; then
44 printf "mhmail: missing argument to -attach\n"; exit 1
45 elif [ ${bodyarg} -eq 1 ]; then
46 printf "mhmail: missing argument to -body\n"; exit 1
47 elif [ ${ccarg} -eq 1 -a "${cclist}"x = x ]; then
48 printf "mhmail: missing argument to -cc\n"; exit 1
49 elif [ ${fromarg} -eq 1 ]; then
50 printf "mhmail: missing argument to -from\n"; exit 1
51 elif [ ${headerfieldarg} -eq 1 ]; then
52 printf "mhmail: missing argument to -headerfield\n"; exit 1
53 elif [ ${subjectarg} -eq 1 ]; then
54 printf "mhmail: missing argument to -subject\n"; exit 1
55 elif [ ${toarg} -eq 1 ]; then
56 printf "mhmail: missing argument to -to\n"; exit 1
61 #### Emulate mhmail for reading mail.
62 exec "${nmhbindir}"/inc
64 #### Go through all the switches so we can build the draft.
65 tolist= ## To: addresses
66 toarg=0 ## whether currently handling -to
67 attacharg=0 ## whether currently handling -attach
68 attach_send_switch_added=0 ## whether added "-attach Nmh-Attachment" switch
69 body= ## contents of the message body
70 bodyarg=0 ## whether currently handling -body
71 cclist= ## Cc: addresses
72 ccarg=0 ## whether currently handling -cc
73 from= ## From: contents
74 fromarg=0 ## whether currently handling -from
75 headerfieldlist= ## header fields to be added to draft
76 headerfieldarg=0 ## whether currently handling -headerfield
77 mhmailswitch=0 ## whether currently handling any mhmail switch
78 subject= ## Subject: contents
79 subjectarg=0 ## whether currently handling -subject
80 resent=0 ## whether resending
81 postsendargs= ## switches to pass on to post or send
82 post_send_switch_arg=0 ## whether currently handling a post/send switch
83 use_send=0 ## use post (default) or send (-profile)
84 sendsw=1 ## to send (default) or not to send
87 #### Post and send won't accept -f -or -s because they'd be
88 #### ambiguous, so no conflicts with them. And they don't have
89 #### -b, -c, -r, -t. For the new switches that compiled mhmail
90 #### didn't have: let -p indicate mhmail -profile, not send
91 #### -port. -send masks the send(1) -send switch. -attach
92 #### masks the send(1) -attach switch.
93 -at|-att|-atta|-attac|-attach)
97 if [ ${attach_send_switch_added} -eq 0 ]; then
98 #### Override any send -attach switch in user's profile.
100 "${postsendargs:+${postsendargs} }-attach Nmh-Attachment"
101 attach_send_switch_added=1
103 -b|-bo|-bod|-body) mhmailswitch=1; bodyarg=1 ;;
104 -c|-cc) mhmailswitch=1; ccarg=1 ;;
105 -f|-fr|-fro|-from) mhmailswitch=1; fromarg=1 ;;
106 -hea|-head|-heade|-header|-headerf|-headerfi|-headerfie|-headerfiel|\
107 -headerfield) mhmailswitch=1; headerfieldarg=1 ;;
108 -hel|-help) printf "%s\n" "${usage}"; exit ;;
109 -nose|-nosen|-nosend) mhmailswitch=1; sendsw=0 ;;
110 -p|-pr|-pro|-prof|-profi|-profil|-profile) mhmailswitch=1; use_send=1 ;;
111 -resend) printf "mhmail: did you mean -resent instead of -resend?\n" 1>&2
113 -r|-re|-res|-rese|-resen|-resent) mhmailswitch=1; resent=1 ;;
114 -se|-sen|-send) mhmailswitch=1; sendsw=1 ;;
115 -su|-sub|-subj|-subje|-subjec|-subject) mhmailswitch=1; subjectarg=1 ;;
116 -t|-to) toarg=1; ccarg=0 ;;
117 -v|-ve|-ver|-vers|-versi|-versio|-version)
118 #### Cheat instead of using autoconf and make to fill in the version.
119 "${nmhbindir}"/mhpath -v | sed 's/mhpath/mhmail/'; exit ;;
120 -*) if [ ${mhmailswitch} -eq 1 ]; then
124 post_send_switch_arg=1
125 postsendargs="${postsendargs:+${postsendargs} }${arg}" ;;
127 if [ ${bodyarg} -eq 1 ]; then
131 #### Allow -body "" by using just a newline for the body.
132 [ "${body}"x = x ] && body='
134 elif [ ${fromarg} -eq 1 ]; then
137 elif [ ${subjectarg} -eq 1 ]; then
140 elif [ ${attacharg} -eq 1 ]; then
141 headerfieldlist="${headerfieldlist:+${headerfieldlist}}\
142 Nmh-Attachment: ${arg}
145 elif [ ${headerfieldarg} -eq 1 ]; then
146 #### It's not strictly necessary to have one space after
147 #### the : that separates the header field name from the
148 #### body, but do it to avoid surprising someone.
149 add=`printf "${arg}" | sed -e 's/:/: /' -e 's/: /: /'`
150 headerfieldlist="${headerfieldlist:+${headerfieldlist}}${add}
153 elif [ ${post_send_switch_arg} -eq 1 ]; then
154 postsendargs="${postsendargs:+${postsendargs} }${arg}"
155 elif [ ${ccarg} -eq 1 ]; then
156 #### ccarg can only be reset to 0 by -to.
157 cclist="${cclist:+${cclist}, }${arg}"
160 tolist="${tolist:+${tolist}, }${arg}"
166 #### Check for at least one address and -from.
167 if [ "${tolist}"x = x ]; then
168 printf "mhmail: usage: mhmail addrs ... [switches]\n"; exit 1
170 if [ "${from}"x = x ]; then
171 nmhlibdir=`${nmhbindir}/mhparam libdir`/
172 from=`${nmhlibdir}ap -format '%(localmbox)' 0`
175 #### Check for missing mandatory arguments.
179 [ ${resent} -eq 0 ] && prefix= || prefix='Resent-'
180 header="${prefix}To: ${tolist}
182 [ "${cclist}"x = x ] || header="${header}${prefix}Cc: ${cclist}
184 [ "${subject}"x = x ] || header="${header}${prefix}Subject: ${subject}
186 [ "${from}"x = x ] || header="${header}${prefix}From: ${from}
189 if [ "${headerfieldlist}" ]; then
190 header="${header}${headerfieldlist}"
193 #### Set up a file to supply as a draft to post/send. And set a
194 #### trap to remove it. send moves the file to a backup, so it will
195 #### remove that, too.
197 tmpdir="${MHTMPDIR:-${TMPDIR:-${TMP:-`${nmhbindir}/mhpath +`}}}"
198 tmpfile="${tmpdir}/mhmail$$"
199 tmpfilebackup="${tmpdir}/[,#]mhmail$$"
203 if [ ${resent} -eq 0 ]; then
204 #### Add blank line after header if not resending.
207 message_file="${tmpfile}"
209 if [ ${use_send} -eq 0 ]; then
210 postsendargs="${postsendargs:+${postsendargs} }-dist"
211 message_file="${tmpfile}"
213 #### When resending with send, tmpfile will just contain the
214 #### Resent- header fields. "${tmpfileresent}" will contain
215 #### the message that is being resent.
216 tmpfileresent="${tmpdir}/mhmail-resent$$"
217 mhdist=1; export mhdist
218 mhaltmsg=${tmpfileresent}; export mhaltmsg
219 message_file="${tmpfileresent}"
220 printf "" >"${message_file}" || exit 2
224 trap 'rm -f '"${tmpfile}"' '"${tmpfilebackup}"' '"${tmpfileresent}" EXIT
226 if [ "${body}"x = x ]; then
227 #### First put message header in the file.
228 printf "%s" "${header}" >"${tmpfile}" || exit 2
230 tmpfile_size_before=`wc -c "${message_file}"`
231 #### Now grab the body from stdin. cat >> handles blank lines
232 #### better than body=`cat`.
233 cat >>"${message_file}" || exit 2
234 tmpfile_size_after=`wc -c "${message_file}"`
236 #### Don't allow an empty body (from stdin). Use string
237 #### comparison so we don't have to strip the filename, etc.
238 if [ "${tmpfile_size_before}" = "${tmpfile_size_after}" ]; then
239 printf "mhmail: empty message not sent, use -body '' to force.\n" 1>&2
243 #### Add trailing newline to body if it doesn't have one.
244 if [ `tail -n 1 "${message_file}" | wc -l` -ne 1 ]; then
245 printf "\n" >>"${message_file}" || exit 2
248 #### Add trailing newline to body if it doesn't have one.
249 [ `printf "${body}" | tail -n 1 | wc -l` -ne 1 ] && body="${body}
252 if [ "${tmpfileresent}" ]; then
253 #### Put just the new message header in the file.
254 printf "%s" "${header}" >"${tmpfile}" || exit 2
255 #### and the body in the file to resend.
256 printf "${body}" >"${tmpfileresent}" || exit 2
258 #### Put message header and body in the file.
259 printf "%s" "${header}${body}" >"${tmpfile}" || exit 2
263 if [ ${sendsw} -eq 0 ]; then
266 if [ ${use_send} -eq 0 ]; then
267 post_or_send=`${nmhbindir}/mhparam postproc`
269 post_or_send="${nmhbindir}/send"
272 if "${post_or_send}" "${tmpfile}" ${postsendargs}; then
275 printf "Letter saved in dead.letter\n"
276 #### exec skips the trap set above.
277 [ "${tmpfileresent}" ] && rm -f "${tmpfileresent}"
278 exec mv "${tmpfile}" dead.letter