Mercurial > hgrepos > FreeBSD > ports > sysutils > local-bsdtools
annotate sbin/bsmtp2dma @ 145:c4e9099a3d3e
FIX: Really use "printf" instead of "echo" when printing the version
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Wed, 30 Oct 2019 21:13:00 +0100 |
| parents | 6be3742d21f7 |
| children | dc3ac7fc06ea |
| rev | line source |
|---|---|
| 110 | 1 #!/bin/sh |
| 2 # -*- indent-tabs-mode: nil; -*- | |
| 3 : 'A simple replacement for Bacula `bsmtp` when the underlying mailer does | |
| 4 not listen on TCP ports (e.g. `dma`, `ssmtp` et al.). | |
| 5 | |
| 6 :Author: Franz Glasner | |
| 7 :Copyright: (c) 2019 Franz Glasner. | |
| 8 All rights reserved. | |
| 9 :License: BSD 3-Clause "New" or "Revised" License. | |
| 10 See LICENSE for details. | |
| 11 If you cannot find LICENSE see | |
| 12 <https://opensource.org/licenses/BSD-3-Clause> | |
| 13 :ID: @(#)@@PKGORIGIN@@ $HGid$ | |
| 14 | |
| 15 ' | |
| 16 | |
| 17 VERSION="@@VERSION@@" | |
| 18 | |
| 19 USAGE=' | |
| 20 USAGE: bsmtp2dma [OPTIONS] RECIPIENT ... | |
| 21 | |
| 22 Options: | |
| 23 | |
| 111 | 24 -V Show the program version and usage and exit. |
| 25 | |
| 110 | 26 -8 Does nothing. Just a compatibility option for `bsmtp`. |
| 27 | |
| 111 | 28 -c ADDRESS Set then "CC:" header. |
| 29 | |
| 110 | 30 -d n Does nothing. Just a compatibility option for `bsmtp`. |
| 31 | |
| 32 -f ADDRESS Set the "From:" header. | |
| 33 | |
| 34 -h MAILHOST:PORT Does nothing. Just a compatibility option for `bsmtp`. | |
| 35 | |
| 111 | 36 -l NUMBER Does nothing. Just a compatibility option for `bsmtp`. |
| 110 | 37 |
| 38 -r ADDRESS Set the "Reply-To:" header | |
| 39 | |
| 111 | 40 -s SUBJECT Set the "Subject:" header |
| 110 | 41 |
| 42 | |
| 43 Usage: | |
| 44 | |
| 45 The body of the email message is read from standard input. Message is | |
| 46 ended by sending the `EOF` character (`Ctrl-D` on many systems) on the | |
| 47 start of a new line, much like many `mail` commands. | |
| 48 | |
|
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49 |
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50 Files: |
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51 |
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52 The shell style configuration file in |
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53 |
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54 @@ETCDIR@@/bsmtp2dma.conf is |
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55 |
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56 sourced in at script start. |
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57 |
| 110 | 58 ' |
| 59 | |
| 60 # | |
| 61 # Configuration directory | |
| 62 # | |
| 63 : ${CONFIGDIR:=@@ETCDIR@@} | |
| 64 | |
| 65 test -r "${CONFIGDIR}/bsmtp2dma.conf" && . "${CONFIGDIR}/bsmtp2dma.conf" | |
| 66 | |
| 67 | |
| 111 | 68 # |
| 110 | 69 # Default configuration values |
| 111 | 70 # |
| 71 # `sendmail` is also valid for `dma` because of the mapping within | |
| 72 # `/etc/mail/mailer.conf` | |
| 73 # | |
| 110 | 74 : ${MAILER:=/usr/sbin/sendmail} |
| 75 | |
| 76 | |
| 77 parse_addr() { | |
| 78 : 'Parse an possibly complex email address. | |
| 79 | |
| 80 Addresses can be of the form | |
| 81 | |
| 82 - Name Parts <user@domain.tld> | |
| 83 - user@domain.tld | |
| 84 | |
| 85 `Name Parts` may not contain ``<`` or ``>`` characters. | |
| 86 | |
| 87 Args: | |
| 88 _addr: the complex email address | |
| 89 | |
| 90 Returns: | |
| 91 0 on success, 1 on errors | |
| 92 | |
| 93 Output (Globals): | |
| 94 email_name: the name part (or empty) | |
| 95 email_addr: the technical address part (or empty) | |
| 96 | |
| 97 ' | |
| 98 local _addr | |
| 99 | |
| 100 _addr="$1" | |
| 111 | 101 test -n "${_addr}" || return 1 |
| 110 | 102 |
| 103 if printf "%s" "${_addr}" | grep -q -E -e '^[^<>]+<[^<>]+@[^<>]+>$'; then | |
| 104 email_name=$(printf '%s' "${_addr}" | sed -E -e 's/[[:space:]]*<.+$//') | |
| 105 email_addr=$(printf '%s' "${_addr}" | sed -E -e 's/^[^<>]+<//' | sed -E -e 's/>$//') | |
| 106 return 0 | |
| 107 fi | |
| 108 if printf "%s" "${_addr}" | grep -q -E -e '^[^<>]+@[^<>]+$'; then | |
| 109 email_name="" | |
| 110 email_addr="${_addr}" | |
| 111 return 0 | |
| 112 fi | |
| 113 return 1 | |
| 114 } | |
| 115 | |
| 116 | |
| 117 send_mail() { | |
| 118 : 'Send the mail via the underlying configured mailer (dma, sendmail et al.). | |
| 119 | |
| 120 Args: | |
| 121 _recipient: The recipient name. | |
| 122 | |
| 123 Will be written into the "To:" header also. | |
| 124 | |
| 125 Input (Globals): | |
| 126 MAILER | |
| 127 MAILCONTENT | |
|
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128 MAILFIFO_STDIN |
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129 MAILFIFO_STDOUT |
| 110 | 130 CC |
| 131 FROM | |
| 132 REPLYTO | |
| 133 SUBJECT | |
| 134 | |
| 135 Returns: | |
| 136 0 on success, other values on errors or the error exit code from the | |
| 137 underlying mailer | |
| 138 | |
| 111 | 139 This procedure starts the configured mailer as coproc and sends |
| 140 email headers and contents to the started mailer. | |
| 141 | |
| 110 | 142 ' |
| 111 | 143 local _recipient _rc _oifs _text _pid_mailer _recipient_addr |
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144 local _from_from _from_addr _sender_addr _dummy |
| 110 | 145 |
| 146 _recipient="$1" | |
| 147 _rc=0 | |
| 148 | |
| 111 | 149 if parse_addr "${_recipient}"; then |
| 150 _recipient_addr="${email_addr}" | |
| 151 else | |
| 152 echo "ERROR: unknown recipient address format in \`${_recipient}'" >&2 | |
| 153 return 1 | |
| 154 fi | |
| 155 _sender_addr="$(whoami)@$(hostname -f)" | |
| 156 if [ -z "${FROM}" ]; then | |
| 157 _from_addr="${_sender_addr}" | |
| 158 _from_from="${_from_addr}" | |
| 159 else | |
| 160 if parse_addr "${FROM}"; then | |
| 161 _from_from="${FROM}" | |
| 162 _from_addr="${email_addr}" | |
| 163 else | |
| 164 echo "ERROR: unknown sender name in \`${FROM}'" >&2 | |
| 165 return 1 | |
| 166 fi | |
| 167 fi | |
| 168 | |
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169 mkfifo -m 0600 "${MAILFIFO_STDIN}" |
| 110 | 170 _rc=$? |
| 171 if [ ${_rc} -ne 0 ]; then | |
| 172 return ${_rc} | |
| 173 fi | |
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174 mkfifo -m 0600 "${MAILFIFO_STDOUT}" |
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175 _rc=$? |
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176 if [ ${_rc} -ne 0 ]; then |
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177 rm -f "${MAILFIFO_STDIN}" |
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178 return ${_rc} |
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179 fi |
| 110 | 180 |
| 121 | 181 # |
| 182 # Start the mailer **before** opening the pipe; otherwise a | |
| 183 # deadlock occurs | |
| 184 # | |
|
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185 "$MAILER" -f "${_sender_addr}" "${_recipient_addr}" <${MAILFIFO_STDIN} >${MAILFIFO_STDOUT} & |
| 110 | 186 _pid_mailer=$! |
| 187 | |
|
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188 exec 3>"${MAILFIFO_STDIN}" |
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189 exec 4<"${MAILFIFO_STDOUT}" |
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190 |
| 111 | 191 printf "To: %s\n" "${_recipient}" >&3 |
| 192 printf "From: %s\n" "${_from_from}" >&3 | |
| 193 if [ "${_sender_addr}" != "${_from_addr}" ]; then | |
| 194 printf "Sender: %s\n" "${_sender_addr}" >&3 | |
| 195 fi | |
| 196 if [ -n "${SUBJECT}" ]; then | |
| 197 printf "Subject: %s\n" "${SUBJECT}" >&3 | |
| 198 fi | |
| 199 if [ -n "${REPLYTO}" ]; then | |
| 114 | 200 # |
| 201 # XXX TBD proper Reply-To header value checks: | |
| 202 # a comma separated list of full mail addresses | |
| 203 # | |
| 111 | 204 printf "Reply-To: %s\n" "${REPLYTO}" >&3 |
| 205 fi | |
| 206 if [ -n "${CC}" ]; then | |
| 114 | 207 # |
| 208 # XXX TBD proper CC header value checks: | |
| 209 # a comma separated list of full mail addresses | |
| 210 # | |
| 111 | 211 printf "Cc: %s\n" "${CC}" >&3 |
| 212 fi | |
| 213 printf "\n" >&3 | |
| 214 | |
| 215 # preserve leading white space when reading with `read` | |
| 110 | 216 _oifs="$IFS" |
| 217 IFS=" | |
| 218 " | |
| 219 cat "${MAILCONTENT}" | | |
| 220 while read _text; do | |
| 221 printf "%s\n" "$_text" >&3 | |
| 222 done | |
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223 # not all mailer recognize this |
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224 # printf ".\n" >&3 |
| 110 | 225 IFS="$_oifs" |
| 226 | |
| 121 | 227 # close the fd to the pipe: coproc should get EOF and terminate |
| 110 | 228 exec 3>&- |
|
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229 # read eventually remaining stuff from the mailer until EOF |
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230 IFS='' read _dummy <&4 |
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231 exec 4<&- |
| 110 | 232 |
| 233 wait $_pid_mailer | |
| 234 _rc=$? | |
| 235 | |
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236 # we are done with the named pipes |
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237 rm -f "${MAILFIFO_STDIN}" |
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238 rm -f "${MAILFIFO_STDOUT}" |
| 110 | 239 |
| 240 return ${_rc} | |
| 241 } | |
| 242 | |
| 243 | |
| 111 | 244 while getopts "V8c:d:f:h:l:nr:s:" _opt; do |
| 110 | 245 case ${_opt} in |
| 246 V) | |
|
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247 printf 'bsmtp2dma v%s (rv:%s)\n' "${VERSION}" '@@HGREVISION@@' |
| 110 | 248 echo "$USAGE" |
| 249 exit 0; | |
| 250 ;; | |
| 251 8) | |
| 252 : # VOID | |
| 253 ;; | |
| 254 c) | |
| 255 CC="$OPTARG" | |
| 256 ;; | |
| 111 | 257 d) |
| 258 : # VOID | |
| 259 ;; | |
| 110 | 260 f) |
| 261 FROM="$OPTARG" | |
| 262 ;; | |
| 263 h) | |
| 264 : # VOID | |
| 265 ;; | |
| 266 l) | |
| 267 : # VOID | |
| 268 ;; | |
| 269 r) | |
| 270 REPLYTO="$OPTARG" | |
| 271 ;; | |
| 272 s) | |
| 273 SUBJECT="$OPTARG" | |
| 274 ;; | |
| 275 \?) | |
| 276 exit 2; | |
| 277 ;; | |
| 278 *) | |
| 279 echo "ERROR: inconsistent option handling" >&2 | |
| 280 exit 2; | |
| 281 ;; | |
| 282 esac | |
| 283 done | |
| 284 | |
| 285 # return code | |
| 286 _rc=0 | |
| 287 | |
| 288 MAILTMPDIR="$(mktemp -d)" | |
|
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289 MAILFIFO_STDIN="${MAILTMPDIR}/mail-stdin" |
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290 MAILFIFO_STDOUT="${MAILTMPDIR}/mail-stdout" |
| 110 | 291 MAILCONTENT="${MAILTMPDIR}/mail-text" |
| 292 | |
| 293 # | |
| 294 # Clean up existing temporary stuff on all sorts of exit | |
| 295 # (including the "exit" call (signal 0)) | |
| 296 # | |
| 111 | 297 trap 'if [ -d "${MAILTMPDIR}" ]; then rm -rf "${MAILTMPDIR}"; fi; exit;' 0 1 2 15 |
| 110 | 298 |
| 299 test -d "${MAILTMPDIR}" || { echo "ERROR: no existing private tmp dir" >&2; exit 1; } | |
| 300 | |
| 301 # | |
| 302 # Reset the Shell's option handling system to prepare for handling | |
| 303 # other arguments and probably command-local options | |
| 304 # | |
| 305 shift $((OPTIND-1)) | |
| 306 OPTIND=1 | |
| 307 | |
| 308 # early check whether some recipients are given | |
| 309 if [ $# -eq 0 ]; then | |
| 310 echo "ERROR: no recipient given" >&2 | |
| 311 exit 2; | |
| 312 fi | |
| 313 | |
| 314 # | |
| 315 # Collect the mail text from stdin into a temporary file | |
| 316 # | |
| 317 exec 3>"${MAILCONTENT}" | |
| 111 | 318 # preserve leading white space when reading with `read` |
| 110 | 319 _oifs="$IFS" |
| 320 IFS=" | |
| 321 " | |
| 322 while read _text; do | |
| 323 if [ "${_text}" = "." ]; then | |
| 324 break | |
| 325 else | |
| 326 printf "%s\n" "${_text}" >&3 | |
| 327 fi | |
| 328 done | |
| 329 exec 3>&- | |
| 330 IFS="$_oifs" | |
| 331 | |
| 332 # | |
| 333 # Now send the content of the collected mail content to all recipients | |
| 334 # | |
| 335 until [ $# -eq 0 ]; do | |
| 336 send_mail "$1" | |
| 337 _rcsm=$? | |
| 338 if [ \( ${_rcsm} -ne 0 \) -a \( ${_rc} -eq 0 \) ]; then | |
| 339 _rc=${_rcsm} | |
| 340 fi | |
| 341 shift | |
| 342 done | |
| 343 | |
| 344 exit ${_rc} |