gpg-mailkeys/gpg-mailkeys

   1 #! /bin/sh
   2 #
   3 # gpg-mailkeys: mail out just signed keys to their owners
   4 #
   5 # $Id$
   6
   7 set -e
   8
   9 VERSION='$Rev$'
  10
  11 # Define the charset used in the text message of the mail
  12 LOCAL_CHARSET=""
  13
  14 ##
  15 # Get the local charset.
  16 #
  17 # The local charset is deduced from the charset used by both ~/.gpg-mailkeysrc
  18 # and ~/.signature. If none of these files exist, the local charset is assumed
  19 # to be us-ascii.
  20
  21 get_local_charset ()
  22 {
  23     local charset="us-ascii"
  24     local file_list="$HOME/.signature $HOME/.gpg-mailkeysrc"
  25
  26     for filename in $file_list; do
  27
  28         if [ -e $filename ]; then
  29             charset=`file --mime-encoding $filename | cut -d ' ' -f 2`
  30             break
  31         fi
  32
  33     done;
  34
  35     LOCAL_CHARSET=$charset
  36 }
  37
  38 if [ -z "$*" ]; then
  39         printf "Send people their newly signed GPG key by mail.\n"
  40         printf "Usage: $0 keyid ...\n"
  41         exit 1
  42 fi
  43
  44 if [ -e ~/.gpg-mailkeysrc ] ; then
  45         . ~/.gpg-mailkeysrc
  46 fi
  47 if [ -n "$EMAIL" ]; then
  48         FROM="$EMAIL"
  49 fi
  50 if [ -z "$SUBJECT" ]; then
  51         SUBJECT="Your signed GPG key"
  52 fi
  53 if [ -z "$NAME" ]; then
  54         NAME=`getent passwd $USER | cut -d: -f5 | cut -d, -f1`
  55 fi
  56 if [ -z "$TEXT" ]; then
  57         TEXT="Hi,
  58
  59 Here is your signed GPG key.
  60
  61 Enjoy,
  62 $NAME"
  63 fi
  64
  65 get_local_charset
  66
  67 FAILKEYS=
  68
  69 while [ -n "$1" ]; do
  70         printf "[$1] "
  71         TEMPFILE=`mktemp -t gpg2mail.XXXXXX`
  72         ADDR=`gpg --with-colons --fixed-list-mode --list-key $1 | sed -e 's/^uid:[^re][^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:\([^:<]*<[^:>]*>\):.*/@@uid@@ \1/' -e '/^@@uid@@ /!d' -e 's/([^)]*)//g' -e 's/  */ /g' -e 's/^@@uid@@ //' | head -1`
  73         if [ -z "$ADDR" ]; then
  74                 printf "(no usable user ids)\n"
  75                 FAILKEYS="$FAILKEYS:$1"
  76                 shift 1
  77                 continue
  78         fi
  79         NANOTIME=`date +%s-%N`
  80         BOUNDARY="ksp-$$-boundary-$NANOTIME"
  81
  82         printf "$ADDR:"
  83         if [ $FROM ]; then
  84                 printf >$TEMPFILE "From: $NAME <$FROM>\n"
  85         fi
  86 cat << EOM >> $TEMPFILE
  87 To: $ADDR
  88 Subject: $SUBJECT
  89 User-Agent: gpg-mailkeys/$VERSION
  90 MIME-Version: 1.0
  91 Content-Type: multipart/mixed; micalg=pgp-sha1;
  92     boundary="$BOUNDARY"
  93 Content-Disposition: inline
  94
  95
  96
  97 --$BOUNDARY
  98 Content-Type: text/plain; charset=$LOCAL_CHARSET
  99 Content-Disposition: inline
 100 Content-Transfer-Encoding: quoted-printable
 101
 102
 103 `echo "$TEXT" | qprint -e`
 104
 105 EOM
 106
 107 if [ -f ~/.signature ];
 108         then printf -- "--=20\n" >> $TEMPFILE
 109         qprint -e ~/.signature >> $TEMPFILE
 110 fi
 111
 112 cat << EOM >> $TEMPFILE
 113
 114 --$BOUNDARY
 115 Content-Type: application/pgp-keys
 116 Content-Disposition: attachment; filename="$1.asc"
 117
 118 `gpg --armor --export $1`
 119
 120 --$BOUNDARY--
 121 EOM
 122         printf " sending"
 123         /usr/sbin/sendmail -ti <$TEMPFILE
 124         rm $TEMPFILE
 125         printf " done.\n"
 126         shift 1
 127 done
 128
 129 if [ -n "$FAILKEYS" ]; then
 130         printf "\nNote: The following keys could not be sent:\n"
 131         printf "$FAILKEYS\n" | tr ':' '\n' | sed -e '/^ *$/d' -e 's/^/  /'
 132 fi