opensmtpd 5.7.3p2-1 / postinst

#!/bin/sh

set -e
. /usr/share/debconf/confmodule

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

update_alias () {
    ALIAS=$1
    ADDR=$2
    # Operation is as follows:
    # If debconf has a new non-empty value for the root alias:
    #   If the alias file already has that alias:
    #     Do nothing
    #   else if the alias file has no commented out root alias and
    #           the alias file has no root alias:
    #     Append the new alias
    #   else if the alias file has a commented out root alias and
    #           the alias file has no root alias:
    #     Insert the new alias after the commented out one
    #   else:
    #     Comment out the existing root alias and insert the new one
    #     below it
    if [ "${ALIAS}" -a "${ADDR}" -a -f /etc/aliases ]; then
        REGEX="${ALIAS}[[:space:]]*:[[:space:]]*"
        # Don't abort if an egrep has a non-zero status, i.e., fails to find a
        # match
        set +e
        # Is the alias in the file?
        egrep "^${REGEX}.*" /etc/aliases > /dev/null 2>&1
        HAS_ALIAS=$?
        # Is the new alias in the file?
        egrep "^${REGEX}${ADDR}($|[[:space:]]*#.*)" /etc/aliases >/dev/null 2>&1
        HAS_OUR_ALIAS=$?
        # Is the alias commented out in the file?
        egrep "^#[[:space:]]*${REGEX}.*" /etc/aliases > /dev/null 2>&1
        HAS_COMMENTED_ALIAS=$?
        set -e
        if [ $HAS_OUR_ALIAS -eq 0 ]; then
            # The alias file already has our alias, do nothing
            true
        elif [ $HAS_ALIAS -ne 0 -a $HAS_COMMENTED_ALIAS -ne 0 ]; then
            # There's no ${ALIAS} alias whatsoever, add ours to the end of the
            # file
            printf "\n${ALIAS}:		${ADDR}" >> /etc/aliases
        else
            # /etc/aliases has either the alias with the wrong value or alias
            # commented out
            if [ $HAS_ALIAS -eq 0 ]; then
                # aliases has the alias with the wrong value, we'll comment it
                # out and add the new one below it.
                SEARCH="/^${REGEX}.*/"
            else
                # aliases only has a commented out version of the alias; add
                # ours below it.
                SEARCH="/^#[[:space:]]*${REGEX}.*/"
            fi
            # We don't have an instance of the desired alias, insert it.
            #
            # ed:
            # Turn on descriptive errors to assist in debugging should the script
            # fail.
            # Find the first occurence of a "${ALIAS}:" alias / comment.
            # Comment it out if it's an alias.
            # Add a line with the new alias.
            # Comment out any subsequent ${ALIAS}: aliases that may exist.
            # Write changes to disk.
            #
            # Note, if using <<-, you *must* indent with tabs. Add a "|| true"
            # since ed will exit 1 at the end if a search failed.
            ed -s /etc/aliases <<-EOF > /dev/null 2>&1 || true
		H
		${SEARCH}
		s/^${REGEX}/# &/
		a
		${ALIAS}:		${ADDR}
		.
		+1,\$s/^${ALIAS}[[:space:]]*:.*/# &/g
		w
		EOF
        fi
    fi
}


db_fget opensmtpd/mailname changed || true
# Has the user reconfigured / updated the debconf value?
if [ "${RET}" = "true" ]; then
    db_get opensmtpd/mailname
    echo "${RET}" > /etc/mailname
    db_fset opensmtpd/mailname changed false
fi

db_get opensmtpd/root_address
ROOT_ADDRESS="${RET}"
# The user can leave ROOT_ADDRESS blank to not forward root mail anywhere.
if [ ! -f /etc/aliases ]; then
    if [ "${ROOT_ADDRESS}" ]; then
        ROOT_LINE="root:		${ROOT_ADDRESS}"
    else
        ROOT_LINE="# root:"
    fi
    # Note, if using <<-, you *must* indent with tabs; moreover, blank lines
    # must also contain the appropriate number of tab.
    cat <<-EOF > /etc/aliases
	# Enter mail aliases below in the format described by aliases(5)
	${ROOT_LINE}
	
	# RFC 2142 NETWORK OPERATIONS MAILBOX NAMES
	abuse:		root
	noc:		root
	security:	root
	
	# RFC 2142 SUPPORT MAILBOX NAMES FOR SPECIFIC INTERNET SERVICES
	postmaster:	root
	hostmaster:	root
	# usenet:	root
	# news:		usenet
	webmaster:	root
	www:		webmaster
	# uucp:		root
	ftp:		root
	EOF
    db_fset opensmtpd/root_address changed false
fi


db_fget opensmtpd/root_address changed || true
if [ "${RET}" = "true" ]; then
    update_alias "root" "${ROOT_ADDRESS}"
fi
db_fset opensmtpd/root_address changed false
db_fget opensmtpd/root_address first || true
if [ "${RET}" = "true" -a ${ROOT_ADDRESS} ]; then
    # It's our first time configuring aliases; create a postmaster alias as
    # promised in the template if it doesn't already exist. Use ed to insert it
    # after the root alias, which is guaranteed to exist by the actions above.
    egrep "^postmaster[[:space:]]*:" /etc/aliases >/dev/null 2>&1 || \
        ed -s /etc/aliases <<-EOF > /dev/null 2>&1
		H
		/^root[[:space:]]*:.*/
		a
		postmaster:	root
		.
		w
		EOF
    db_fset opensmtpd/root_address first false
fi
makemap -t aliases /etc/aliases

case "$1" in
    configure)
        for name in opensmtpd opensmtpq; do
            id -g ${name} > /dev/null 2>&1 || addgroup --system ${name}
        done

        # Based on postfix.postinst:
        id opensmtpd > /dev/null 2>&1 || \
                adduser --system --home /var/lib/opensmtpd/empty \
                    --no-create-home --disabled-password \
                    --gecos "OpenSMTD Daemon" \
                    --ingroup opensmtpd opensmtpd
        id opensmtpq > /dev/null 2>&1 || \
                adduser --system --home /var/lib/opensmtpd/empty \
                    --no-create-home --disabled-password \
                    --gecos "OpenSMTD queue user" \
                    --ingroup opensmtpq opensmtpq
    ;;

    abort-upgrade|abort-remove|abort-deconfigure|reconfigure)
    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

db_stop

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
	if [ -x "/etc/init.d/opensmtpd" ]; then
		update-rc.d opensmtpd defaults >/dev/null
	fi
	if [ -x "/etc/init.d/opensmtpd" ] || [ -e "/etc/init/opensmtpd.conf" ]; then
		invoke-rc.d opensmtpd start || exit $?
	fi
fi
# End automatically added section


exit 0