diplodocus.org Git - nmh/blob - etc/sendfiles

   1 #!/bin/sh
   2 #
   3 # Sends multiple files and/or directories in a MIME message.
   4 # Requires tar and any specified compression program.
   5 #
   6 # This code is Copyright (c) 2012, by the authors of nmh.  See the
   7 # COPYRIGHT file in the root directory of the nmh distribution for
   8 # complete copyright information.
   9
  10 usage='Usage: sendfiles [switches] -to recipient -subject subject '"\
  11 "'file1 [file2 ...]
  12   or
  13        sendfiles [switches] recipient subject file1 [file2 ...]
  14   switches are:
  15   -compress [bzip2 | compress | gzip | lzma | none]
  16   -from <sender>
  17   -[delay] <delay> (expressed in seconds)
  18   -version
  19   -help
  20   Can use PERSON environment variable instead of -from switch.'
  21
  22
  23 #### Find location of a program.  Bourne shell just puts the name in
  24 #### $0 if it's found from the PATH, so search that if necessary.
  25 finddir() {
  26   case $1 in
  27     */*) dirname "$1" ;;
  28     *  ) IFS=:
  29          for d in $PATH; do
  30            [ -f "${d:=.}/$1"  -a  -x "$d/$1" ]  &&  printf %s "$d"  &&  break
  31          done ;;
  32   esac
  33 }
  34
  35 help() {
  36   printf '%s\n' "$usage"
  37   #### Print the nmh intro text.
  38   ${nmhbindir}/mhparam -help | sed -n -e '/^$/,$p'
  39   exit
  40 }
  41
  42 die() {
  43   printf '%s\n' "$usage"
  44   exit ${1:-1}
  45 }
  46
  47 bindir=`finddir $0`
  48 nmhbindir=`cd "$bindir" && pwd`
  49 nmhlibexecdir=`$nmhbindir/mhparam libexecdir`
  50
  51
  52 #### Process switches.
  53 compress=                   ## compress method
  54 compressarg=0               ## whether currently handling -compress
  55 delay=                      ## delay value
  56 delayarg=0                  ## whether currently handling -delay
  57 from=                       ## From: contents
  58 fromarg=0                   ## whether currently handling -from
  59 subject=                    ## Subject: contents
  60 subjectarg=0                ## whether currently handling -subject
  61 to=                         ## To: address
  62 toarg=0                     ## whether currently handling -to
  63 for arg in "$@"; do
  64   case $arg in
  65     -c|-co|-com|-comp|-compr|-compre|-compres|-compress) compressarg=1 ;;
  66     -d|-de|-del|-dela|-delay) delayarg=1 ;;
  67     -[0-9]|-[0-9][0-9]|-[0-9][0-9][0-9]|-[0-9][0-9][0-9][0-9])
  68       delay=`printf '%s\n' "$arg" | sed -e 's%-%%'` ;;
  69     -f|-fr|-fro|-from) fromarg=1 ;;
  70     #### Support -gzip for backward compatibility.
  71     -gzip) compress=gzip ;;
  72     -h|-he|-hel|-help) help ;;
  73     #### Support -none for backward compatibility.
  74     -none) compress=none ;;
  75     -s|-su|-sub|-subj|-subje|-subjec|-subject) subjectarg=1 ;;
  76     -t|-to) toarg=1 ;;
  77     -v|-ve|-ver|-vers|-versi|-versio|-version)
  78        "$nmhlibexecdir/viamail" -version | sed 's/viamail/sendfiles/'; exit ;;
  79     -*) die ;;
  80     *) if [ $compressarg -eq 1 ]; then
  81          compress="$arg"
  82          compressarg=0
  83        elif [ $delayarg -eq 1 ]; then
  84          delay="$arg"
  85          delayarg=0
  86        elif [ $fromarg -eq 1 ]; then
  87          from="$arg"
  88          fromarg=0
  89        elif [ $subjectarg -eq 1 ]; then
  90          subject="$arg"
  91          subjectarg=0
  92        elif [ $toarg -eq 1 ]; then
  93          to="$arg"
  94          toarg=0
  95        else
  96          #### Argument doesn't apply to a switch, so we're done with switches.
  97          break
  98        fi ;;
  99   esac
 100   shift
 101 done
 102
 103 #### Check for switch after non-switch argument.
 104 for arg in "$@"; do
 105   case $arg in
 106     -*) die ;;
 107   esac
 108 done
 109
 110 #### Check for required arguments (to, subject, file(s)).
 111 if [ x"$to" = x ]; then
 112   if [ x"$subject" = x ]; then
 113     if [ $# -ge 3 ]; then
 114       to="$1"; shift
 115       subject="$1"; shift
 116     else
 117       die
 118     fi
 119   else
 120     die
 121   fi
 122 else
 123   [ x"$subject" = x  -o  $# -lt 1 ]  &&  die
 124 fi
 125
 126 #### Check for missing mandatory arguments.
 127 checkforargs() {
 128   if [ $compressarg -eq 1 ]; then
 129     printf 'sendfiles: missing argument to -compress\n' >&2; exit 1
 130   elif [ $delayarg -eq 1 ]; then
 131     printf 'sendfiles: missing argument to -delay\n' >&2; exit 1
 132   elif [ $fromarg -eq 1 ]; then
 133     printf 'sendfiles: missing argument to -from\n' >&2; exit 1
 134   elif [ $subjectarg -eq 1 ]; then
 135     printf 'sendfiles: missing argument to -subject\n' >&2; exit 1
 136   elif [ $toarg -eq 1 ]; then
 137     printf 'sendfiles: missing argument to -to\n' >&2; exit 1
 138   fi
 139 }
 140
 141 checkforargs
 142 [ $# -eq 0 ]  &&  die
 143
 144
 145 if [ x"$from" = x ]; then
 146   if [ x"$PERSON" = x ]; then
 147     from=`"$nmhlibexecdir/ap" -format '%(localmbox)' 0`
 148   else
 149     from="$PERSON"
 150   fi
 151 fi
 152
 153
 154 #### Determine compression method and descriptive info.
 155 if [ x"$compress" = x ]; then
 156   for compressor in gzip bzip2 lzma compress none; do
 157     if [ x"`finddir $compressor`" = x ]; then :; else
 158       compress="$compressor"
 159       break
 160     fi
 161   done
 162 fi
 163
 164 case $compress in
 165   bzip2)    uncompress=bzcat; conversion='; x-conversions=bzip2' ;;
 166   compress) compress='compress -c'; uncompress='uncompress -c';
 167             conversion='; x-conversions=compress' ;;
 168   gzip)     compress='gzip -c'; uncompress='gzip -cd'
 169             conversion='; x-conversions=gzip' ;;
 170   lzma)     compress='lzma -c'; uncompress='lzma -cd'
 171             conversion='; x-conversions=lzma' ;;
 172   none)     compress=cat uncompress=cat; conversion= ;;
 173   *)        printf 'sendfiles: unknown compression method "%s"\n' \
 174                    "$compress" >&2
 175             die ;;
 176 esac
 177
 178
 179 #### Send using viamail.
 180 tar cvf - "$@" | $compress | \
 181     "$nmhlibexecdir/viamail" -to "$to" -subject "$subject" \
 182         -from "$from" -parameters "type=tar$conversion" \
 183         -comment "extract with $uncompress | tar xvpf -" \
 184         -delay "$delay" -verbose