204 lines
8.6 KiB
Bash
204 lines
8.6 KiB
Bash
#!/bin/sh /etc/rc.common
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START=99
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STOP=01
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PIDFILE="/tmp/run/sshtunnel"
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append_params() {
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local p; local v; local args;
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for p in $*; do
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eval "v=\$$p"
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[ -n "$v" ] && args="$args -o $p=$v"
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done
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ARGS_options="${args# *}"
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}
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append_string() {
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local varname="$1"; local add="$2"; local separator="${3:- }"; local actual
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eval "actual=\$$varname"
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new="${actual:+$actual$separator}$add"
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eval "$varname=\$new"
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}
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load_tunnelR() {
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config_get section_server $1 server
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[ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
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let count++ # count nr of valid sections to make sure there are at least one
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config_get remoteaddress $1 remoteaddress "*"
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config_get remoteport $1 remoteport
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config_get localaddress $1 localaddress
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config_get localport $1 localport
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[ "$remoteport" -gt 0 ] || append_string "error" "[tunnelR: $1]remoteport must be a positive integer" "; "
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[ "$localport" -gt 0 ] || append_string "error" "[tunnelR: $1]localport must be a positive integer" "; "
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[ -n "$error" ] && return 1
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append_string "ARGS_tunnels" "-R $remoteaddress:$remoteport:$localaddress:$localport"
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}
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load_tunnelL() {
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config_get section_server $1 server
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[ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
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let count++ # count nr of valid sections to make sure there are at least one
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config_get localaddress $1 localaddress "*"
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config_get localport $1 localport
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config_get remoteaddress $1 remoteaddress
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config_get remoteport $1 remoteport
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[ "$remoteport" -gt 0 ] || append_string "error" "[tunnelL: $1]remoteport must be a positive integer" "; "
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[ "$localport" -gt 0 ] || append_string "error" "[tunnelL: $1]localport must be a positive integer" "; "
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[ -n "$error" ] && return 1
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append_string "ARGS_tunnels" "-L $localaddress:$localport:$remoteaddress:$remoteport"
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}
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load_tunnelD() {
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config_get section_server $1 server
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[ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
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let count++ # count nr of valid sections to make sure there are at least one
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config_get localaddress $1 localaddress "*"
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config_get localport $1 localport
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[ "$remoteport" -gt 0 ] || append_string "error" "[tunnelD: $1]remoteport must be a positive integer" "; "
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[ "$localport" -gt 0 ] || append_string "error" "[tunnelD: $1]localport must be a positive integer" "; "
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[ -n "$error" ] && return 1
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append_string "ARGS_tunnels" "-D $localaddress:$localport"
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}
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load_tunnelW() {
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config_get section_server $1 server
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[ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
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let count++ # count nr of valid sections to make sure there are at least one
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config_get localdev $1 localdev "*"
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config_get remotedev $1 remotedev "*"
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config_get vpntype $1 vpntype "*"
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[ "$vpntype" == "ethernet" ] || [ "$vpntype" == "point-to-point" ] || append_string "error" "[tunnelW: $1] vpntype must be \"ethernet\" (tap) or \"pointopoint\" (tun)" "; "
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[ "$localdev" == "any" ] || [ "$localdev" -ge 0 ] || append_string "error" "[tunnelW: $1] localdev must be an integer or \"any\"" "; "
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[ "$remotedev" == "any" ] || [ "$remotedev" -ge 0 ] || append_string "error" "[tunnelW: $1] remotedev must be an integer or \"any\"" "; "
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[ "$user" == "root" ] || logger -p user.warn -t "sshtunnel" "warning: root is required unless the tunnel device has been created manually"
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[ -n "$error" ] && return 1
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append_string "ARGS_tunnels" "-w $localdev:$remotedev -o Tunnel=$vpntype"
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}
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load_server() {
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server="$1"
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config_get user $1 user
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config_get hostname $1 hostname
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config_get port $1 port "22"
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config_get retrydelay $1 retrydelay "60"
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config_get PKCS11Provider $1 PKCS11Provider
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config_get CheckHostIP $1 CheckHostIP
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config_get Compression $1 Compression
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config_get CompressionLevel $1 CompressionLevel
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config_get IdentityFile $1 IdentityFile
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config_get LogLevel $1 LogLevel
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config_get ServerAliveCountMax $1 ServerAliveCountMax
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config_get ServerAliveInterval $1 ServerAliveInterval
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config_get StrictHostKeyChecking $1 StrictHostKeyChecking
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config_get TCPKeepAlive $1 TCPKeepAlive
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config_get VerifyHostKeyDNS $1 VerifyHostKeyDNS
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error=""
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[ -n "$user" ] \
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|| append_string "error" "user is not set" "; "
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[ -n "$hostname" ] \
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|| append_string "error" "hostname is not set" "; "
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[ "$retrydelay" -ge 1 ] \
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|| append_string "error" "retrydelay must be a positive integer" "; "
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[ -z "$PKCS11Provider" -o -f "$PKCS11Provider" ] \
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|| append_string "error" "PKCS11Provider must be a pkcs11 shared library accessible" "; "
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[ -z "$CheckHostIP" -o "$CheckHostIP"="yes" -o "$CheckHostIP"="no" ] \
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|| append_string "error" "CheckHostIP must be 'yes' or 'no'" "; "
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[ -z "$Compression" -o "$Compression"="yes" -o "$Compression"="no" ] \
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|| append_string "error" "Compression must be 'yes' or 'no'" "; "
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[ -z "$CompressionLevel" ] || [ "$CompressionLevel" -ge 1 -a "$CompressionLevel" -le 9 ] \
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|| append_string "error" "CompressionLevel must be between 1 and 9" "; "
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[ -z "$IdentityFile" -o -f "$IdentityFile" ] \
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|| append_string "error" "IdentityFile $IdentityFile not accessible" "; "
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[ -z "$LogLevel" -o "$LogLevel" = "QUIET" -o "$LogLevel" = "FATAL" -o "$LogLevel" = "ERROR" -o \
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"$LogLevel" = "INFO" -o "$LogLevel" = "VERBOSE" -o "$LogLevel" = "DEBUG" -o \
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"$LogLevel" = "DEBUG1" -o "$LogLevel" = "DEBUG2" -o "$LogLevel" = "DEBUG3" ] \
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|| append_string "error" "LogLevel is invalid" "; "
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[ -z "$ServerAliveCountMax" ] || [ "$ServerAliveCountMax" -ge 1 ] \
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|| append_string "error" "ServerAliveCountMax must be greater or equal than 1" "; "
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[ -z "$ServerAliveInterval" ] || [ "$ServerAliveInterval" -ge 0 ] \
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|| append_string "error" "ServerAliveInterval must be greater or equal than 0" "; "
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[ -z "$StrictHostKeyChecking" -o "$StrictHostKeyChecking" = "yes" -o "$StrictHostKeyChecking" = "ask" -o "$StrictHostKeyChecking" = "no" ] \
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|| append_string "error" "StrictHostKeyChecking must be 'yes', 'ask' or 'no'" "; "
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[ -z "$TCPKeepAlive" -o "$TCPKeepAlive" = "yes" -o "$TCPKeepAlive" = "no" ] \
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|| append_string "error" "TCPKeepAlive must be 'yes' or 'no'" "; "
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[ -z "$VerifyHostKeyDNS" -o "$VerifyHostKeyDNS" = "yes" -o "$VerifyHostKeyDNS" = "no" ] \
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|| append_string "error" "VerifyHostKeyDNS must be 'yes' or 'no'" "; "
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[ -n "$error" ] && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - $error"; return; }
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ARGS=""
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ARGS_options=""
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ARGS_tunnels=""
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count=0
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config_foreach load_tunnelR tunnelR && config_foreach load_tunnelL tunnelL && config_foreach load_tunnelD tunnelD
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[ -n "$error" ] && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - $error"; return; }
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[ "$count" -eq 0 ] && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - no tunnels defined"; return; }
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append_params CheckHostIP Compression CompressionLevel IdentityFile LogLevel PKCS11Provider ServerAliveCountMax ServerAliveInterval StrictHostKeyChecking TCPKeepAlive VerifyHostKeyDNS
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ARGS="$ARGS_options -o ExitOnForwardFailure=yes -o BatchMode=yes -nN $ARGS_tunnels -p $port $user@$hostname"
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/usr/bin/sshtunnel.sh "$ARGS" "$retrydelay" "$server" &
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echo $! >> "${PIDFILE}.pids"
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logger -p user.info -t "sshtunnel" "started tunnels to $server (pid=$!;retrydelay=$retrydelay)"
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}
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stop() {
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if [ -f "$PIDFILE".pids ]
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then
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logger -p user.info -t "sshtunnel" "stopping all tunnels"
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while read pid
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do
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kill "$pid" # kill mother process first
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[ -f "${PIDFILE}_${pid}.pid" ] && { # if ssh was running, kill it also (mother process could be in retry wait)
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start-stop-daemon -K -p "${PIDFILE}_${pid}.pid"
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rm "${PIDFILE}_${pid}.pid"
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}
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logger -p daemon.info -t "sshtunnel[$pid]" "tunnel stopped"
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done < "${PIDFILE}.pids"
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rm "${PIDFILE}.pids"
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logger -p user.info -t "sshtunnel" "all tunnels stopped"
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else
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logger -p user.info -t "sshtunnel" "no tunnels running"
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fi
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}
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start() {
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[ -f "${PIDFILE}.pids" ] && stop
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config_load sshtunnel
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if [ -n "$(uci show sshtunnel.@server[0])" ] # at least one server section exists
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then
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logger -p user.info -t "sshtunnel" "starting all tunnels"
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config_foreach load_server server
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logger -p user.info -t "sshtunnel" "all tunnels started"
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else
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logger -p user.info -t "sshtunnel" "no servers defined"
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fi
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}
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