individualised timeouts for hosts

README.md

@@ -8,9 +8,8 @@ Edit the config file `/opt/tunnelkeeper/etc/tunnelkeeper.conf`. If you make chan
 There are 3 sections:
 #### settings
 - `debug [0..3]`: Debug logging levels 0 (no logging) to 3 (too much logging).
-- `timeout`: Echo check timeout for watched connections.
 #### ssh
 - It's an ssh config file, so see `man ssh_config` for information. TunnelKeeper will connect to each host listed, and make sure every connection in `tunnelkeeper.conf` stays open in the background.
 - There are 2 options that aren't available in normal ssh config files:
-  - `Watch` : Enables an echo test on the host at regular intervals.
+  - `Watch N` : Enables an echo test on the host at intervals of **N** seconds.
   - `Password` : Uses screen to log in with a password. This is **insecure**, since the password is in plaintext, so use passwordless auth if possible.

etc/tunnelkeeper.conf

@@ -1,6 +1,5 @@
 [settings]
 debug 0
-timeout 30
 
 [ssh]
 # Everything in this section obeys the same rules as ~/.ssh/config
@@ -11,7 +10,7 @@ timeout 30
 #   Hostname 123.45.67.89
 #   User ubuntu
 #   LocalForward 12345 127.0.0.1:22
-#   Watch
+#   Watch 30
 #   Password p@$$w0rd
 #
 # Host server2

tunnelkeeper

@@ -15,8 +15,9 @@ SSHCONF="$BASEDIR/var/ssh.conf"
 PWCONF="$BASEDIR/var/passwords.conf"
 WATCHCONF="$BASEDIR/var/watch.conf"
 
-cat "$BASEDIR/var/[ssh].conf" | grep -Eiv '^ *(watch|password)' > cat "$SSHCONF"
+cat "$BASEDIR/var/[ssh].conf" | grep -Eiv '^ *(watch|password)' > "$SSHCONF"
-cat "$BASEDIR/var/[ssh].conf" | grep -Ei '^( *watch|Host)' | grep -i -B1 watch | grep -i '^Host' | awk '{print $2}' > "$WATCHCONF"
+# cat "$BASEDIR/var/[ssh].conf" | grep -Ei '^( *watch|Host)' | grep -i -B1 watch | grep -i '^Host' | awk '{print $2}' > "$WATCHCONF"
+cat "$BASEDIR/var/[ssh].conf" | grep -Ei '^( *watch|Host)' | awk '{print $1 " " $2}' | grep -i -B1 --no-group-separator watch | tr '\n' ' ' | sed 's/Host /\n/g; s/ *[Ww]atch//g' > "$WATCHCONF"
 cat "$BASEDIR/var/[ssh].conf" | grep -Ei '^( *password|Host)' | awk '{print $1 " " $2}' | grep -i -B1 --no-group-separator password | tr '\n' ' ' | sed 's/Host /\n/g; s/ *[Pp]assword//g' > "$PWCONF"
 
 function ruroot () {
@@ -34,8 +35,8 @@ case "$DEBUGLEVEL" in
   *) dbgopt='';;
 esac
 
-TIMEOUT=$(awk '/^timeout/ {print $2}' $TKCONF &>/dev/null)
+# TIMEOUT=$(awk '/^timeout/ {print $2}' $TKCONF &>/dev/null)
-[[ -z $TIMEOUT ]] && TIMEOUT='60'
+# [[ -z $TIMEOUT ]] && TIMEOUT='60'
 
 function dbg () {
   [[ $DEBUGLEVEL != "0" ]] && logger -t tunnelkeeper
@@ -70,6 +71,7 @@ case "$1" in
   ;;
   FORKWATCH ) # makes sure the connection is still working, even if ssh doesn't drop it
     while true; do
+      TIMEOUT=$(awk "/^$2/ {print \$2}" ${WATCHCONF})
       sleep $TIMEOUT
       echo "tick $2" | dbg
       if [[ $(timeout $TIMEOUT ssh localhost -o "StrictHostKeyChecking no" -S $BASEDIR/var/$2.tksock "echo tk") != "tk" ]]; then
@@ -136,8 +138,9 @@ WantedBy=multi-user.target" > /lib/systemd/system/tunnelkeeper.service
     rm /usr/local/bin/tunnelkeeper
     rm /lib/systemd/system/tunnelkeeper.service
     systemctl daemon-reload
+    cp -f /opt/tunnelkeeper/etc/tunnelkeeper.conf /opt/tunnelkeeper.conf.bak
     rm -rf /opt/tunnelkeeper
-    echo -e "\nTunnelKeeper service uninstalled.\n"
+    echo -e "\nTunnelKeeper service uninstalled. Config backup saved as /opt/tunnelkeeper.conf.bak \n"
   ;;
   list )
     echo "---"