libltdl/config/mailnotify.m4sh

AS_INIT[]m4_divert_push([HEADER-COPYRIGHT])dnl
# @configure_input@

# mailnotify (GNU @PACKAGE@) version 1.0
# Written by Gary V. Vaughan <gary@gnu.org>

# Copyright (C) 2004, 2006, 2010 Free Software Foundation, Inc.
# This is free software; see the source for copying conditions.  There is NO
# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# Mailnotify is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Mailnotify is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with mailnotify; see the file COPYING.  If not, a copy
# can be downloaded from http://www.gnu.org/licenses/gpl.html,
# or obtained by writing to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

# Usage: $progname [OPTIONS]...
#
# -x        --debug             enable verbose shell tracing
#           --dry-run           don't actually post the mime message
# -f FILE   --filename=FILE     content of this part
# -h FILE   --headers=FILE      read additional headers from FILE
# -m TYPE   --mime-type=TYPE    mime-type of this part
# -o FILE   --output-file=FILE  output to FILE instead of sending
# -v        --verbose           run in verbose mode
#           --version           print version information
# -?        --help              print short or long help message

# Assemble a (possibly multi-part) mime message and hand it to the local
# sendmail for onward delivery.  MUAs tend to mangle patch attachments in
# various ways: not setting the mime-type correctly, line wrapping the
# patch itself, escaping certain values, etc.  This script is designed to
# make it easier to send a patch as a MIME attachment, though it is general
# enough that it might be useful otherwise.

# For example to send a patch as an attachment, assuming the patch itself
# is in PATCHFILE:
#
#    echo 'From: me@example.org' > headers
#    echo 'To: patch-list@foo.org' >> headers
#    echo 'Subject: FYI: PATCHFILE' >> headers
#    echo 'Cc: someone@example.org' >> headers
#    echo 'Applied this patch to HEAD' > body
#    $progname -h headers -f body -m text/plain -f PATCHFILE -m text/x-patch
#
# There is no set order or requirement for mail headers in the headers
# file, though you will obviously need someone's address in 'To:', and
# it's not polite to omit the 'Subject:' header...

# You will probably find using this script in conjunction with clcommit
# saves you a lot of typing.

# Report bugs to <gary@gnu.org>

: ${HOST=`hostname`}
: ${SENDMAIL=sendmail}

PROGRAM=mailnotify

m4_divert_pop
m4_include([getopt.m4sh])

M4SH_VERBATIM([[
sed_mail_address='s,^.*<\(.*\)>.*$,\1,'
]])

dnl SHORT	LONG			       DEFAULT		      INIT
dnl ----------------------------------------------------------------------
dnl There are several options supported below for backwards compatibility,
dnl but which are not mentioned in the help.
M4SH_GETOPTS(
  [C^!],	[--carbon-copy],		[],			[],
  [F^!],	[--from],			[],			[],
  [f@+],	[--filename],			[],			[],
  [h@!],	[--headers],			[],			[],
  [m+!],	[--mime-type],			[],			[
	case [$]1 in
	  text/*) ;;
	  */*) func_error "\`[$]1': only text/* mime-types supported"
	       ;;
	  *)   func_error "invalid mime-type, \`[$]1'"
	       exit_cmd=exit
	       ;;
	esac],
  [n],		[],				[],			[],
  [o!],		[--output-file],		[],			[],
  [s^!],	[--subject],			[],			[],
  [v],		[--verbose],			[],			[],
  [],		[--dry-run|--dryrun],		[],			[],
 [
  # ensure destination address(es) available
  test [$]# -gt 0 ||
    grep '^\(To\|Cc\|Bcc\): ' "${opt_headers-nosuchfile}" >/dev/null 2>&1 ||
      func_fatal_help "no destination address"

  # validate headers
  test "$opt_headers" && {
    test -n "$opt_carbon_copy" && grep "^Cc: *" "$opt_headers" >/dev/null 2>&1 && {
      func_error "specify \`Cc:' in either \`$opt_headers' or with \`--carbon-copy'."
      exit_cmd=exit
    }
    test -n "$opt_from" && grep "^From: *" "$opt_headers" >/dev/null 2>&1 && {
      func_error "specify \`From:' in either \`$opt_headers' or with \`--from'."
      exit_cmd=exit
    }
    test -n "$opt_subject" && grep "^Subject: *" "$opt_headers" >/dev/null 2>&1 && {
      func_error "specify \`Subject:' in either \`$opt_headers' or with \`--subject'."
      exit_cmd=exit
    }
  }

  # validate mime parts
  if test "${opt_mime_type_num-0}" -ne "${opt_filename_num-0}"; then
    func_fatal_error "One part is incomplete -- each part needs a filename and a mime-type"
  fi
  if test -z "$opt_output_file"; then
    test -f "$opt_headers" || if test -z "$opt_subject" ||
       eval test -z \"\$opt_mime_type_$opt_mime_type_num\" ||
       eval test -z \"\$opt_filename_$opt_filename_num\"; then
      func_fatal_error "if output is not directed to a file -s, -f, and -m are all required"
    fi
  else
    eval test -n \"\$opt_filename_$opt_filename_num\" ||
        func_fatal_error "-f is required."
    eval test -n \"\$opt_mime_type_$opt_mime_type_num\" ||
        func_fatal_error "with output directed to a file, -m is required"
  fi

  # validate $opt_dry_run
  $opt_dry_run && SENDMAIL="echo $SENDMAIL"
])

M4SH_VERBATIM([[
# Bail out on command errors!
set -e

# func_headers outfile destination
# Generate common headers to OUTFILE, where DESTINATION is a comma
# separated list of fully qualified destination addresses.
func_headers ()
{
    $opt_debug

    my_outfile="$1"
    my_destination="$2"
    my_sed_version_no='
	/^# '$PROGRAM' (GNU / {
	    s/^# .*version //
	    p
	}
	d'

    $opt_dry_run || {
	echo "User-Agent: $PROGRAM/`$SED \"$my_sed_version_no\" < $progpath`"
	echo "MIME-Version: 1.0"

	# Deprecated command line options take precedence at the moment
	my_elide="Bcc"
	test -n "$opt_from" &&
	    my_elide="${my_elide+$my_elide\|}From" && eval echo From: $opt_from
	test -n "$my_destination" &&
	    my_elide="${my_elide+$my_elide\|}To" && eval echo To: $my_destination
	test -n "$opt_carbon_copy" &&
	    my_elide="${my_elide+$my_elide\|}Cc" && eval echo CC: $opt_carbon_copy
	test -n "$opt_subject" &&
	    my_elide="${my_elide+$my_elide\|}Subject" && eval echo Subject: $opt_subject

	# Plus any additional headers
	test -n "$opt_headers" && $SED "/^\($my_elide\): */d" "$opt_headers"
    } > "$my_outfile"

    :
}


# func_single_content outfile
# Send the only message part as a single mime mail part.
func_single_content ()
{
    $opt_debug

    my_outfile="$1"

    $opt_dry_run || cat >> "$my_outfile" <<EOF
Content-Type: $opt_mime_type_1;
Content-Transfer-Encoding: 7bit

`cat $opt_filename_1`
EOF
}


# func_multipart_content outfile
# Send the various message parts to OUTFILE as a multipart mime mail.
func_multipart_content ()
{
    $opt_debug

    my_outfile="$1"
    boundary="boundary-${HOST}-$$-`date | tr ' :' -`"
    $opt_dry_run || {
	cat <<EOF >> "$my_outfile"
Content-Type: multipart/mixed;
	boundary="$boundary"

This is a multimedia message in MIME format.  If you are reading
this prefix, your mail reader does not understand MIME.  You may
wish to look into upgrading to a mime-aware mail reader.
EOF
	i=0
	while test $i -lt $opt_filename_num
	do
	    i=`expr 1 + $i`
	    eval file=\"\$opt_filename_$i\"
	    name=`echo "$file" | $SED $basename`
	    {
		echo ""
		echo "--$boundary"
		if test $i -gt 1; then
		    eval echo \"Content-Type: \$opt_mime_type_$i\;\"
		    echo "        name=\"$name\""
		else
		    eval echo \"Content-Type: \$opt_mime_type_$i\"
		fi
		echo "Content-Transfer-Encoding: 7bit"
		echo ""
		cat "$file"
	    } >> "$my_outfile"
	done
	{
	    echo ""
	    echo "--${boundary}--"
	    echo ""
	} >> "$my_outfile"
    }

    :
}


# func_sendmail infile destination [from]
# Send the message in INFILE to the space delimited list of destination
# addresses in DESTINATION.  If FROM is given, it is the address the
# mail purports to be from.
# BEWARE: Many MTAs will refuse mail where FROM does not match the actual
#         sending domain.
func_sendmail ()
{
    $opt_debug

    my_infile="$1"
    my_destination="$2"
    my_from="$3"

    $opt_dry_run && my_infile=/dev/null

    from_name=`eval echo "X$my_from" | $Xsed -e 's, *<.*> *$,,'`
    from_addr=`eval echo "X$my_from" | $Xsed -e "$sed_mail_address"`

    save_PATH="$PATH"
    PATH="/usr/lib:/usr/sbin:$PATH"

    $opt_dry_run || {
        save_IFS="$IFS"
        IFS=':'
        for try_sendmail_dir in $PATH; do
            IFS="$save_IFS"
	    PATH="$save_PATH"
	    if test -x "$try_sendmail_dir/$SENDMAIL"; then
	        SENDMAIL="$try_sendmail_dir/$SENDMAIL"
	        break
	    fi
        done
        IFS="$save_IFS"
        PATH="$save_PATH"
        test -x "$SENDMAIL" || func_fatal_error "sendmail executable not found"
    }

    func_verbose "Delivering mail, please wait..."
    if test -n "$from_name"; then
        $SENDMAIL -F "$from_name" -f "$from_addr" $my_destination < "$my_infile"
    elif test -n "$from_addr"; then
        $SENDMAIL -f "$from_addr" $my_destination < "$my_infile"
    else
        $SENDMAIL $my_destination < "$my_infile"
    fi
    if test $? -eq 0; then
        func_verbose "...succeeded."
        $opt_dry_run || $RM $my_infile
    else
        func_fatal_error "Mail delivery failed, draft mail is in $my_infile"
    fi
}


# func_extract_email_from_header re_header headerfile
func_extract_email ()
{
    $opt_debug

    my_re_header="$1"
    my_headerfile="$2"
    $as_unset func_extract_email_result

    save_IFS="$IFS"
    IFS='
'
    for to in : `grep "$my_re_header" "$my_headerfile" 2>/dev/null`; do
	IFS="$save_IFS"
	test "X$to" = X: && continue

	line=`echo "$to" | $SED "s,$my_re_header,,"`

	IFS=,
	for addr in $line; do
	    IFS="$save_IFS"
	    func_quote_for_eval "$addr"
	    to_addr=`echo "$func_quote_for_eval_result" | $SED "$sed_mail_address"`
	    test -n "$to_addr" || to_addr="$func_quote_for_eval_result"
	    func_extract_email_result="${func_extract_email_result+$func_extract_email_result }$to_addr"
	done
    done
    IFS="$save_IFS"
}

## ----- ##
## main. ##
## ----- ##

{
  tmp_dir="`func_mktempdir`"
  headers="$tmp_dir/headers"
  fname="$tmp_dir/mail"

  trap '$RM -r "$tmp_dir"; exit $EXIT_FAILURE' 1 2 15

  # Generate a comma separated list of destination addresses for the
  # mail headers:
  $as_unset destination
  for to in : ${1+"$@"}
  do
      test "X$to" = X: && continue

      func_quote_for_eval "$to"
      destination="${destination+$destination, }$func_quote_for_eval_result"
  done
  func_headers "$fname" "$destination"

  if test $opt_filename_num -gt 1; then
      func_multipart_content "$fname"
  else
      func_single_content "$fname"
  fi

  # Generate a list of destination addresses for sendmail:
  if test -z "$opt_output_file"; then
      $as_unset destination
      for to in : ${1+"$@"}
      do
          test "X$to" = X: && continue

	  func_quote_for_eval "$to"

          to_addr=`echo "$func_quote_for_eval_result" | $SED "$sed_mail_address"`
	  test -n "$to_addr" || to_addr="$func_quote_for_eval_result"
	  destination="${destination+$destination }$to_addr"
      done
      func_extract_email '^To: *' "$opt_headers"
      destination="${destination+$destination }$func_extract_email_result"
      func_extract_email '^Cc: *' "$opt_headers"
      destination="${destination+$destination }$func_extract_email_result"
      func_extract_email '^Bcc: *' "$opt_headers"
      destination="${destination+$destination }$func_extract_email_result"

      test -n "$opt_from" || {
	  func_extract_email '^From: *' "$opt_headers"
	  opt_from="$func_extract_email_result"
      }

      func_sendmail "$fname" "$destination" "$opt_from"
  else
      mv $fname $opt_output_file || exit $EXIT_FAILURE
  fi

  $RM -r "$tmp_dir"
}

exit $EXIT_SUCCESS

# Local Variables:
# mode:shell-script
# sh-indentation:2
# End:
]])