avoid using PYTHONPATH to enable setup mod hooks, which is problematic for managment command line tool use

- save the directory path to setup mods in /etc/mailinabox.conf
- dynamically add the path to python during hook initialization

setup/functions.sh

@@ -317,18 +317,54 @@ say() {
 	echo "$@"
 }
 
+wait_for_management_daemon() {
+	local progress="${1:-progress}" # show progress? "progress"/"no-progress"
+	local max_wait="${2:-60}" # seconds, 0=forever
+	local start=$(date +%s)
+	local elapsed=0 now
+	[ "$max_wait" = "forever" ] && max_wait=0
+	
+	# Wait for the management daemon to start...
+	until nc -z -w 4 127.0.0.1 10222
+	do
+		now=$(date +%s)
+		# let returns 1 if the equasion evaluates to zero, which will
+		# cause the script to exit because of set -e. add one.
+		[ $now -eq $start ] && let now+=1
+		let elapsed="$now - $start"
+		if [ $max_wait -ne 0 -a $elapsed -gt $max_wait ]; then
+			echo "Timeout waiting for Mail-in-a-Box management daemon to start"
+			return 1
+		fi
+		if [ "$progress" = "progress" ]; then
+			echo Waiting for the Mail-in-a-Box management daemon to start...
+		fi
+		sleep 2
+	done
+}
+
 install_hook_handler() {
 	# this is used by local setup mods to install a hook handler for
-	# the management daemon
+	# the management daemon. source /etc/mailinabox.conf before
+	# calling
 	local handler_file="$1"
 	local dst="${LOCAL_MODS_DIR:-local}/management_hooks_d"
-	mkdir -p "$dst"	
-	cp "$handler_file" "$dst"
-	# let the daemon know there's a new hook handler
-	tools/hooks_update >/dev/null
+	if [ ! -d "$dst" -o -e "$dst/$(basename "$handler_file")" ]; then
+		mkdir -p "$dst"
+		cp "$handler_file" "$dst"
+		if systemctl is-active --quiet mailinabox; then
+			systemctl restart mailinabox
+			wait_for_management_daemon no-progress
+		fi
+	else
+		cp "$handler_file" "$dst"
+		# let the daemon know there's a new hook handler
+		tools/hooks_update >/dev/null
+	fi
 }
 
 remove_hook_handler() {
+	# source /etc/mailinabox.conf before calling
 	local hook_py=$(basename "$1")
 	local dst="${LOCAL_MODS_DIR:-local}/management_hooks_d/$hook_py"
 	if [ -e "$dst" ]; then

setup/management.sh

@@ -103,7 +103,7 @@ tr -cd '[:xdigit:]' < /dev/urandom | head -c 32 > /var/lib/mailinabox/api.key
 chmod 640 /var/lib/mailinabox/api.key
 
 source $venv/bin/activate
-export PYTHONPATH=$(pwd)/management:${LOCAL_MODS_DIR:-$(pwd)/local}
+export PYTHONPATH=$(pwd)/management
 exec gunicorn --log-level ${MGMT_LOG_LEVEL:-info} -b localhost:10222 -w 1 --timeout 630 wsgi:app
 EOF
 chmod +x $inst_dir/start

setup/start.sh

@@ -105,6 +105,9 @@ if [ ! -f $STORAGE_ROOT/mailinabox-ldap.version ]; then
 	chown $STORAGE_USER.$STORAGE_USER $STORAGE_ROOT/mailinabox-ldap.version
 fi
 
+# normalize the directory path for setup mods
+LOCAL_MODS_DIR="$(realpath -m "${LOCAL_MODS_DIR:-${DEFAULT_LOCAL_MODS_DIR:-local}}")"
+
 # Save the global options in /etc/mailinabox.conf so that standalone
 # tools know where to look for data. The default MTA_STS_MODE setting
 # is blank unless set by an environment variable, but see web.sh for
@@ -118,6 +121,7 @@ PUBLIC_IPV6=$PUBLIC_IPV6
 PRIVATE_IP=$PRIVATE_IP
 PRIVATE_IPV6=$PRIVATE_IPV6
 MTA_STS_MODE=${DEFAULT_MTA_STS_MODE:-enforce}
+LOCAL_MODS_DIR=$LOCAL_MODS_DIR
 EOF
 
 # Start service configuration.
@@ -139,11 +143,7 @@ source setup/management-capture.sh
 source setup/munin.sh
 
 # Wait for the management daemon to start...
-until nc -z -w 4 127.0.0.1 10222
-do
-	echo Waiting for the Mail-in-a-Box management daemon to start...
-	sleep 2
-done
+wait_for_management_daemon progress forever
 
 # ...and then have it write the DNS and nginx configuration files and start those
 # services.
@@ -174,9 +174,9 @@ fi
 #
 # Run setup mods 
 #
-if [ -d "${LOCAL_MODS_DIR:-local}" ]; then
-    for mod in $(ls "${LOCAL_MODS_DIR:-local}" | grep -v '~$'); do
-        mod_path="${LOCAL_MODS_DIR:-local}/$mod"
+if [ -d "$LOCAL_MODS_DIR" ]; then
+    for mod in $(ls "$LOCAL_MODS_DIR" | grep -v '~$'); do
+        mod_path="$LOCAL_MODS_DIR/$mod"
         if [ -f "$mod_path" -a -x "$mod_path" ]; then
             echo ""
             echo "Running mod: $mod_path"