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#!/bin/sh /etc/rc.common
#
# Copyright (C) 2010-2015 OpenWrt.org
# Copyright (C) 2010 segal.di.ubi.pt
#
START=99
STOP=01
USE_PROCD=1
PROG=/usr/bin/ssh
_log() {
logger -p daemon.info -t sshtunnel "$@"
}
_err() {
logger -p daemon.err -t sshtunnel "$@"
}
append_string() {
local varname="$1"; local add="$2"; local separator="${3:- }"; local actual new
eval "actual=\$$varname"
new="${actual:+$actual$separator}$add"
eval "$varname=\$new"
}
validate_server_section() {
uci_load_validate sshtunnel server "$1" "$2" \
'user:string(1)' \
'hostname:host' \
'port:port' \
'retrydelay:min(1):60' \
'PKCS11Provider:file' \
'CheckHostIP:or("yes", "no")' \
'Compression:or("yes", "no")' \
'IdentityFile:file' \
'LogLevel:or("QUIET", "FATAL", "ERROR", "INFO", "VERBOSE", "DEBUG", "DEBUG1", "DEBUG2", "DEBUG3")' \
'ServerAliveCountMax:min(1)' \
'ServerAliveInterval:min(0)' \
'StrictHostKeyChecking:or("yes", "no", "accept-new"):accept-new' \
'TCPKeepAlive:or("yes", "no")' \
'VerifyHostKeyDNS:or("yes", "no")' \
'ProxyCommand:string(1)'
}
validate_tunnelR_section() {
uci_load_validate sshtunnel tunnelR "$1" "$2" \
'enabled:bool:1' \
'remoteaddress:or(host, "*")' \
'remoteport:port' \
'localaddress:host' \
'localport:port'
}
validate_tunnelL_section() {
uci_load_validate sshtunnel tunnelL "$1" "$2" \
'enabled:bool:1' \
'remoteaddress:host' \
'remoteport:port' \
'localaddress:or(host, "*")' \
'localport:port'
}
validate_tunnelD_section() {
uci_load_validate sshtunnel tunnelD "$1" "$2" \
'enabled:bool:1' \
'localaddress:or(host, "*")' \
'localport:port'
}
validate_tunnelW_section() {
uci_load_validate sshtunnel tunnelW "$1" "$2" \
'enabled:bool:1' \
'vpntype:or("ethernet", "point-to-point"):point-to-point' \
'localdev:or("any", min(0))' \
'remotedev:or("any", min(0))'
}
load_tunnelR() {
config_get section_server "$1" "server"
[ "$enabled" = 0 ] && return 0
# continue to read next section if this is not for the current server
[ "$server" = "$section_server" ] || return 0
# validate and load this remote tunnel config
[ "$2" = 0 ] || { _err "tunnelR $1: validation failed"; return 1; }
[ -n "$remoteport" -a -n "$localport" ] || { _err "tunnelR $1: missing required options"; return 1; }
# count nr of valid sections to make sure there are at least one
count=$((count+=1))
_log "tunnelR at $server: -R $remoteaddress:$remoteport:$localaddress:$localport"
append_string "ARGS_tunnels" "-R $remoteaddress:$remoteport:$localaddress:$localport"
}
load_tunnelL() {
config_get section_server "$1" "server"
[ "$enabled" = 0 ] && return 0
# continue to read next section if this is not for the current server
[ "$server" = "$section_server" ] || return 0
# validate and load this remote tunnel config
[ "$2" = 0 ] || { _err "tunnelL $1: validation failed"; return 1; }
[ -n "$remoteport" -a -n "$localport" ] || { _err "tunnelL $1: missing required options"; return 1; }
# count nr of valid sections to make sure there are at least one
count=$((count+=1))
_log "tunnelL at $server: -L $localaddress:$localport:$remoteaddress:$remoteport"
append_string "ARGS_tunnels" "-L $localaddress:$localport:$remoteaddress:$remoteport"
}
load_tunnelD() {
config_get section_server "$1" "server"
[ "$enabled" = 0 ] && return 0
# continue to read next section if this is not for the current server
[ "$server" = "$section_server" ] || return 0
# validate and load this remote tunnel config
[ "$2" = 0 ] || { _err "tunnelD $1: validation failed"; return 1; }
[ -n "$localport" ] || { _err "tunnelD $1: missing localport"; return 1; }
# count nr of valid sections to make sure there are at least one
count=$((count+=1))
_log "proxy via $server: -D $localaddress:$localport"
append_string "ARGS_tunnels" "-D $localaddress:$localport"
}
load_tunnelW() {
config_get section_server "$1" "server"
[ "$enabled" = 0 ] && return 0
# continue to read next section if this is not for the current server
[ "$server" = "$section_server" ] || return 0
# validate and load this remote tunnel config
[ "$2" = 0 ] || { _err "tunnelW $1: validation failed"; return 1; }
[ -n "$vpntype" -a -n "$localdev" -a -n "$remotedev" ] || { _err "tunnelW $1: missing or bad options"; return 1; }
[ "$user" = "root" ] || { _err "tunnelW $1: root is required for tun"; return 1; }
# count nr of valid sections to make sure there are at least one
count=$((count+=1))
_log "tunnelW to $server: -o Tunnel=$vpntype -w $localdev:$remotedev"
append_string "ARGS_tunnels" "-o Tunnel=$vpntype -w $localdev:$remotedev"
}
load_server() {
local server="$1"
[ "$2" = 0 ] || { _err "server $server: validation failed"; return 1; }
local ARGS_tunnels=""
local count=0
config_foreach validate_tunnelR_section "tunnelR" load_tunnelR
config_foreach validate_tunnelL_section "tunnelL" load_tunnelL
config_foreach validate_tunnelD_section "tunnelD" load_tunnelD
config_foreach validate_tunnelW_section "tunnelW" load_tunnelW
[ "$count" -eq 0 ] && { _err "tunnels to $server not started - no tunnels defined"; return 1; }
# old dbclient use -y for StrictHostKeyChecking.
# The -y for OpenSSH means to use syslog but that's ok
local db_StrictHostKeyChecking=""
[ "$StrictHostKeyChecking" = "accept-new" ] && db_StrictHostKeyChecking="-y"
[ "$StrictHostKeyChecking" = "no" ] && db_StrictHostKeyChecking="-yy"
local ARGS="$hostname $ARGS_tunnels \
${port:+-p $port} \
${user:+-l $user} \
${IdentityFile:+-i $IdentityFile} \
${CheckHostIP:+-o CheckHostIP=$CheckHostIP} \
${VerifyHostKeyDNS:+-o VerifyHostKeyDNS=$VerifyHostKeyDNS} \
${Compression:+-o Compression=$Compression} \
${LogLevel:+-o LogLevel=$LogLevel} \
${PKCS11Provider:+-o PKCS11Provider=$PKCS11Provider} \
${TCPKeepAlive:+-o TCPKeepAlive=$TCPKeepAlive} \
${ServerAliveCountMax:+-o ServerAliveCountMax=$ServerAliveCountMax} \
${ServerAliveInterval:+-o ServerAliveInterval=$ServerAliveInterval} \
${StrictHostKeyChecking:+-o StrictHostKeyChecking=$StrictHostKeyChecking $db_StrictHostKeyChecking} \
-o ExitOnForwardFailure=yes -o BatchMode=yes -nN \
"
procd_open_instance "$server"
procd_set_param command "$PROG" $ARGS
# ProxyCommand must be quoted
[ -n "$ProxyCommand" ] && procd_append_param command -o "ProxyCommand=$ProxyCommand"
procd_set_param stdout 1
procd_set_param stderr 1
procd_set_param respawn 0 "$retrydelay" 1
procd_close_instance
}
start_service() {
config_load "sshtunnel"
config_foreach validate_server_section "server" load_server
}
service_triggers() {
procd_add_reload_trigger "sshtunnel"
procd_open_validate
validate_server_section
validate_tunnelR_section
validate_tunnelL_section
validate_tunnelD_section
validate_tunnelW_section
procd_close_validate
}
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