Adding more robust exit codes

packaging/sshuttle.conf

-description "Create a tunnel over SSH proxy"
+description "Create a transparent proxy over SSH"
 author      "Jim Wyllie <jwyllie83@gmail.com>"
 
 manual
@@ -8,15 +8,24 @@ nice -5
 # tunnel.
 env PREFIX_LOCATION=/etc/sshuttle/prefixes.conf
 
-# Try all the keys in a given key directory
-env KEY_LOCATION=/etc/sshuttle/keys
-
 # Routing table; defaults to 100
 env ROUTE_TABLE=100
 
 # fwmark; defaults to 1
 env FWMARK=1
 
+# SSH tunnel configuration file
+env SSHUTTLE_TUNNEL_FILE=/etc/sshuttle/tunnel.conf
+
+# File containing the tunnel proxy name / host / whatever
+env TUNNEL_PROXY="/etc/sshuttle/tunnel.conf"
+
+# Any other commands needed to run before or after loading the SSH tunnel.
+# This is where you can put any of your hacks to set up tunnels-in-tunnels,
+# etc.  Scripts in this directory are executed in order.
+env MISC_START_DIR=/etc/sshuttle/pre-start.d
+env MISC_STOP_DIR=/etc/sshuttle/post-stop.d
+
 start on (local-filesystems and net-device-up IFACE!=lo)
 stop on stopping network-services
 
@@ -30,8 +39,6 @@ pre-start script
 	if [ -f "${PREFIX_LOCATION}" ]; then
 		cat "${PREFIX_LOCATION}" | while read ROUTE; do
 
-			logger "Working on route: ${ROUTE}"
-
 			# Skip comments
 			if [ -n "$(echo ${ROUTE} | egrep "^[ 	]*#")" ]; then
 				continue
@@ -42,18 +49,21 @@ pre-start script
 				continue
 			fi
 
-			logger "Adding route command: ip route add local ${ROUTE} dev lo table ${ROUTE_TABLE}"
+			logger "Adding route: ${ROUTE}"
 			ip route add local ${ROUTE} dev lo table ${ROUTE_TABLE}
 		done
 	fi
+
+	for RUNFILE in ${MISC_START_DIR}/*; do
+		logger "Executing ${RUNFILE}"
+		/bin/sh -c "${RUNFILE}"
+	done
 end script
 
 post-stop script
 	if [ -f "${PREFIX_LOCATION}" ]; then
 		cat "${PREFIX_LOCATION}" | while read ROUTE; do
 
-			logger "Working on route: ${ROUTE}"
-
 			# Skip comments
 			if [ -n "$(echo ${ROUTE} | egrep "^[ 	]*#")" ]; then
 				continue
@@ -64,12 +74,17 @@ post-stop script
 				continue
 			fi
 
-			logger "Deleting route command: ip route del local ${ROUTE} dev lo table ${ROUTE_TABLE}"
+			logger "Deleting route: ${ROUTE}"
 			ip route del local ${ROUTE} dev lo table ${ROUTE_TABLE}
 		done
 	fi
 
 	ip rule del fwmark ${FWMARK}
+
+	for RUNFILE in "${MISC_STOP_DIR}/*"; do
+		logger "Executing ${RUNFILE}"
+		/bin/sh -c "${RUNFILE}"
+	done
 end script
 
-exec sleep 60
+exec /home/jim/Projects/sshuttle.udp/src/sshuttle --method=tproxy --listen 0.0.0.0 --remote sshuttle_tunnel -s /etc/sshuttle/prefixes.conf -e "ssh -F ${TUNNEL_PROXY}"

src/main.py

@@ -193,7 +193,7 @@ try:
                     ipport_v6 = parse_ipport6(ip)
                 else:
                     ipport_v4 = parse_ipport4(ip)
-        sys.exit(client.main(ipport_v6, ipport_v4,
+        return_code = client.main(ipport_v6, ipport_v4,
                              opt.ssh_cmd,
                              remotename,
                              opt.python,
@@ -204,7 +204,14 @@ try:
                              opt.auto_nets,
                              parse_subnets(includes),
                              parse_subnets(excludes),
-                             opt.syslog, opt.daemon, opt.pidfile))
+                             opt.syslog, opt.daemon, opt.pidfile)
+
+        if return_code == 0:
+		log('Normal exit code, exiting...')
+	else:
+		log('Abnormal exit code detected, failing...' % return_code)
+	sys.exit(return_code)
+
 except Fatal, e:
     log('fatal: %s\n' % e)
     sys.exit(99)