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213 lines
6.1 KiB
213 lines
6.1 KiB
#!/bin/sh /etc/rc.common
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#
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# Copyright (C) 2010-2015 OpenWrt.org
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# Copyright (C) 2010 segal.di.ubi.pt
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#
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START=99
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STOP=01
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USE_PROCD=1
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PROG=/usr/bin/ssh
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_log() {
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logger -p daemon.info -t sshtunnel "$@"
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}
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_err() {
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logger -p daemon.err -t sshtunnel "$@"
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}
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append_params() {
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local p v 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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validate_server_section() {
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uci_validate_section sshtunnel server "$1" \
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'user:string(1)' \
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'hostname:host' \
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'port:port' \
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'retrydelay:min(1):60' \
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'PKCS11Provider:file' \
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'CheckHostIP:or("yes", "no")' \
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'Compression:or("yes", "no")' \
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'CompressionLevel:range(1,9)' \
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'IdentityFile:file' \
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'LogLevel:or("QUIET", "FATAL", "ERROR", "INFO", "VERBOSE", "DEBUG", "DEBUG1", "DEBUG2", "DEBUG3"):INFO' \
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'ServerAliveCountMax:min(1)' \
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'ServerAliveInterval:min(1)' \
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'StrictHostKeyChecking:or("yes", "no")' \
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'TCPKeepAlive:or("yes", "no")' \
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'VerifyHostKeyDNS:or("yes", "no")'
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}
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validate_tunnelR_section() {
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uci_validate_section sshtunnel tunnelR "$1" \
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'remoteaddress:or(host, "*"):*' \
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'remoteport:port' \
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'localaddress:host' \
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'localport:port'
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}
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validate_tunnelL_section() {
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uci_validate_section sshtunnel tunnelL "$1" \
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'remoteaddress:host' \
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'remoteport:port' \
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'localaddress:or(host, "*"):*' \
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'localport:port'
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}
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validate_tunnelD_section() {
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uci_validate_section sshtunnel tunnelD "$1" \
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'localaddress:or(host, "*"):*' \
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'localport:port'
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}
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validate_tunnelW_section() {
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uci_validate_section sshtunnel tunnelW "$1" \
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'vpntype:or("ethernet", "point-to-point"):point-to-point' \
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'localdev:or("any", min(1))' \
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'remotedev:or("any", min(1))'
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}
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load_tunnelR() {
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config_get section_server "$1" "server"
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# continue to read next section if this is not for the current server
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[ "$server" = "$section_server" ] || return 0
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# validate and load this remote tunnel config
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local remoteaddress remoteport localaddress localport
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validate_tunnelR_section "$1" || { _err "tunnelR ${1}: validation failed"; return 1; }
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[ -n "$remoteport" -a -n "$localport" -a -n "$remoteaddress" ] || { _err "tunnelR ${1}: missing required options"; return 1; }
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# count nr of valid sections to make sure there are at least one
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let count++
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_log "tunnelR at ${server}: -R $remoteaddress:$remoteport:$localaddress:$localport"
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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 "$1" "server"
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# continue to read next section if this is not for the current server
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[ "$server" = "$section_server" ] || return 0
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# validate and load this remote tunnel config
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local remoteaddress remoteport localaddress localport
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validate_tunnelL_section "$1" || { _err "tunnelL ${1}: validation failed"; return 1; }
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[ -n "$remoteport" -a -n "$localport" -a -n "$remoteaddress" ] || { _err "tunnelL ${1}: missing required options"; return 1; }
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# count nr of valid sections to make sure there are at least one
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let count++
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_log "tunnelL at ${server}: -L $localaddress:$localport:$remoteaddress:$remoteport"
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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 "$1" "server"
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# continue to read next section if this is not for the current server
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[ "$server" = "$section_server" ] || return 0
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# validate and load this remote tunnel config
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local localaddress localport
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validate_tunnelD_section "$1" || { _err "tunnelD ${1}: validation failed"; return 1; }
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[ -n "$localport" ] || { _err "tunnelD ${1}: missing localport"; return 1; }
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# count nr of valid sections to make sure there are at least one
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let count++
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_log "proxy via ${server}: -D $localaddress:$localport"
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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 "$1" "server"
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# continue to read next section if this is not for the current server
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[ "$server" = "$section_server" ] || return 0
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# validate and load this remote tunnel config
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local localdev remotedev vpntype
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validate_tunnelW_section "$1" || { _err "tunnelW ${1}: validation failed"; return 1; }
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[ -n "$vpntype" -a -n "$localdev" -a -n "$remotedev" ] || { _err "tunnelW $1: missing or bad options"; return 1; }
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[ "$user" == "root" ] || { _err "tunnelW ${1}: root is required for tun"; return 1; }
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# count nr of valid sections to make sure there are at least one
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let count++
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_log "tunnelW to ${server}: -w $localdev:$remotedev -o Tunnel=$vpntype"
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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="$1"
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local user hostname port retrydelay PKCS11Provider CheckHostIP Compression \
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CompressionLevel IdentityFile LogLevel ServerAliveCountMax \
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ServerAliveInterval StrictHostKeyChecking TCPKeepAlive VerifyHostKeyDNS
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validate_server_section "$server" || { _err "server ${server}: validation failed"; return 1; }
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ARGS=""
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ARGS_options=""
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ARGS_tunnels=""
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count=0
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config_foreach load_tunnelR "tunnelR"
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config_foreach load_tunnelL "tunnelL"
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config_foreach load_tunnelD "tunnelD"
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config_foreach load_tunnelW "tunnelW"
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[ "$count" -eq 0 ] && { _err "tunnels to ${server} not started - no tunnels defined"; return 1; }
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append_params CheckHostIP Compression CompressionLevel IdentityFile \
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LogLevel PKCS11Provider ServerAliveCountMax ServerAliveInterval \
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StrictHostKeyChecking TCPKeepAlive VerifyHostKeyDNS
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ARGS="$ARGS_options -o ExitOnForwardFailure=yes -o BatchMode=yes -nN $ARGS_tunnels -p $port $user@$hostname"
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procd_open_instance "$server"
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procd_set_param command "$PROG" $ARGS
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procd_set_param stdout 1
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procd_set_param stderr 1
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procd_set_param respawn 0 "$retrydelay" 1
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procd_close_instance
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}
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start_service() {
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config_load "sshtunnel"
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config_foreach load_server "server"
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}
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service_triggers() {
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procd_add_reload_trigger "sshtunnel"
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procd_open_validate
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validate_server_section
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validate_tunnelR_section
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validate_tunnelL_section
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validate_tunnelD_section
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validate_tunnelW_section
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procd_close_validate
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}
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