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