#!/bin/bash # console-config/src/lib-scripts/serial-tcpserial.sh # # Copyright: ©2014, Güralp Systems Ltd. # Author: Kelly Dunlop # License: GPLv3 # # Setup the parameters for a serial port configured for tcpserial. # display_tcpserial_mode # mode (default simple_server) # $1 is the title text to display # $2 is the current value # $3 is the default value # values are simple_server or simple_client display_tcpserial_mode() { if [ -z "$2" ] then default="$3" else default="$2" fi MENU=( "simple_server" "TCP client can connect to the server" \ "simple_client" "converter connects to a remote server" ) display_menu "$1" "Operation mode" 0 0 "$default" } # Separate the bind variable out in to it's component parts # Returns output in two arrays named HOSTS and SERVICES # $1 is the current value of the bind variable from the config file # Returns a counter of how many items found # Updates the HOSTS and SERVICES arrays with the separated out hostname # and port numbers set in the bind parameter. The hostnames may be "" read_bind_values() { bind="$1" count=0 if [ -z "${bind}" ] then return 0 fi for item in ${bind} do if [ "${item}" = "${item/,*}" ] then HOSTS+=("") SERVICES+=("${item}") else HOSTS+=("${item/,*}") SERVICES+=("${item/*,}") fi ((count++)) done return ${count} } # Recreate the bind variable from the two arrays. If nothing has changed then # just use the original value. # $1 is the changes variable (1 means need to reassemble 0 leave alone) # $2 is the number of items in the arrays reassemble_bind() { if [ $1 -eq 0 ] then NEW_TCP_BIND="NOCHANGE" else count=0 NEW_TCP_BIND="" while [ $count -lt $2 ] do if [ -z "${HOSTS[${count}]}" ] then # If both are empty then we do nothing (effectively delete the entry) if [ ! -z "${SERVICES[${count}]}" ] then NEW_TCP_BIND="${NEW_TCP_BIND} ${SERVICES[${count}]}" fi else NEW_TCP_BIND="${NEW_TCP_BIND} ${HOSTS[${count}]},${SERVICES[${count}]}" fi ((count++)) done fi } # display_tcpserial_ipfilter # ipfilter (default "") # $1 is the title text to display # $2 is a true/false value to indicate accept or reject (may be "") # $3 is the current value (may be "") # $2 and $3 will be "" for new entries display_tcpserial_ipfilter() { local type if [ -z "$2" ] then type="accept/reject" else if [ "$2" = "true" ] then type="reject" else type="accept" fi fi display_inputbox "$1" "Hostname to ${type} incoming connections from" 0 0 "$3" } # Separate the ipfilter variable out in to it's component parts # Returns output in two arrays named ADDRESS and REJECT # $1 is the current value of the reject variable from the config file # Returns a counter of how many items found # Updates the ADDRESS and REJECT arrays with the separated out hostname # and a true/false value set in the reject parameter. read_ipfilter_values() { local filter="$1" local count=0 local item len if [ -z "${filter}" ] then return 0 fi for item in ${filter} do len=$((${#item}-7)) if [ "${item:0:6}" = "accept" ] then REJECT+=("false") if [ "${item:((${#item}-1)):1}" = "," ] then len=$((len-2)) else len=$((len-1)) fi ADDRESS+=("${item:7:$len}") else REJECT+=("true") if [ "${item:((${#item}-1)):1}" = "," ] then len=$((len-2)) else len=$((len-1)) fi ADDRESS+=("${item:7:$len}") fi ((count++)) done return ${count} } # Recreate the ipfilter variable from the two arrays # $1 is the changes variable (1 means need to reassemble 0 leave alone) # $2 is the number of items in the arrays reassemble_ipfilter() { local count if [ $1 -eq 0 ] then NEW_TCP_IPFILTER="NOCHANGE" else count=0 NEW_TCP_IPFILTER="" while [ $count -lt $2 ] do # If address is empty then we do nothing (effectively delete the entry) if [ -n "${ADDRESS[${count}]}" ] then if [ "${REJECT[${count}]}" = "false" ] then if [ -z "${NEW_TCP_IPFILTER}" ] then NEW_TCP_IPFILTER="accept(${ADDRESS[${count}]})" else NEW_TCP_IPFILTER="${NEW_TCP_IPFILTER}, accept(${ADDRESS[${count}]})" fi else if [ -z "${NEW_TCP_IPFILTER}" ] then NEW_TCP_IPFILTER="reject(${ADDRESS[${count}]})" else NEW_TCP_IPFILTER="${NEW_TCP_IPFILTER}, reject(${ADDRESS[${count}]})" fi fi fi ((count++)) done fi } # Separate the server variable out in to it's component parts - it is # just a hostname/addr and port nubmer separated by a comma. # Returns output in two global variables named TCP_CLIENT_ADDR and TCP_CLIENT_PORT # $1 is the current value of the server variable from the config file read_server_values() { if [ -z "$1" ] then return 0 fi TCP_CLIENT_ADDR="${1/,*}" TCP_CLIENT_PORT="${1/*,}" } # update config file # $1 is the config filename # $2 is the NEW_TCP_MODE value # $3 is the NEW_TCP_BIND value # $4 is the NEW_TCP_IPFILTER value # $5 is the NEW_TCP_SERVER value update_config_file() { cfset $1 mode="$2" cfset $1 bind="$3" cfset $1 ipfilter="$4" cfset $1 server="$5" # Now we've finished making changes reset the permission of the config file cconf_set_perms_and_group ${TCP_CFG_FILE} 664 "conf" } # Check that the latest host/port combination is not already there. # $1 is the index of the latest added entry. tcpserial_check_repeat_server() { local latest=$1 local count=0 while [ $count -lt $latest ] do # host the same if [ "${HOSTS[${count}]}" = "${HOSTS[${latest}]}" ] then if [ "${SERVICES[${count}]}" = "${SERVICES[${latest}]}" ] then clear echo "Repeated host/service combination ${HOSTS[${count}]}:${SERVICES[${count}]}" exit 1 fi fi ((count++)) done } # display_tcpserial_server_options - Display the server options and update them # $1 is the title text to use # $2 is the number of bind hosts currently set # $3 is the number of accept/reject hosts currently set # There are two arrays for the bind setup named HOSTS and SERVICES # There are two arrays for the accept/reject setup named ADDRESS and REJECT display_tcpserial_server_options() { local count=0 local bind_changes=0 local ipfilter_changes=0 local titletext="$1" local num_bind=$2 local num_reject=$3 local portno default # In server mode the client options will be unchanged so just pass the # current setting through to the new setting. NEW_TCP_SERVER="${TCP_SERVER}" while [ $count -lt $num_bind ] do if [ -z "${SERVICES[${count}]}" ] then portno="${DEF_TCP_BIND_SVC}" else portno="${SERVICES[${count}]}" fi dialog --title "${titletext} - Simple server - current settings" \ --form "Edit hostname/port number to listen for incoming connections" \ 0 0 0 \ "Hostname (blank = all)" 1 0 "${HOSTS[${count}]}" 2 4 54 100 \ "Port number" 3 0 "${portno}" 4 4 54 100 \ 2> "${DIALOG_RESULTFILE}" if [ $? -ne 0 ] then clear echo Cancelled exit 1 fi { read -r NEW_TCP_BIND_HOST read -r NEW_TCP_BIND_SVC } < "${DIALOG_RESULTFILE}" if [ "${NEW_TCP_BIND_HOST}" != "${HOSTS[${count}]}" ] then bind_changes=1 HOSTS[${count}]="${NEW_TCP_BIND_HOST}" fi if [ "${NEW_TCP_BIND_SVC}" != "${SERVICES[${count}]}" ] then bind_changes=1 SERVICES[${count}]="${NEW_TCP_BIND_SVC}" fi # Need to make sure there are no repeats because it causes tcpserial to error if there # are. The exit occurs within the function so if it returns there are no repeats. tcpserial_check_repeat_server $count ((count++)) done while true do # We need to make sure one address is set otherwise tcpserial fails to run. if [ $count -eq 0 ] then default="" else default="--defaultno" fi # Now see if the user wants to add anything, count is the next array element to fill # and it will be 0 if there where no host/service values already set display_yesno "${titletext} - Simple server host and service setup" \ "Add addresses to listen for incoming connections." 0 0 ${default} if [ $? -eq 0 ] then bind_changes=1 # This is the easiest way to work out if this is the first address/port in the list. # If it is we need to set the default port value to DEF_TCP_BIND_SVC. if [ $count -eq 0 ] then portno=${DEF_TCP_BIND_SVC} else portno="" fi dialog --title "${titletext} - Simple server - new values" \ --form "Enter hostname/port number to listen for incoming connections" \ 0 0 0 \ "Hostname (blank = all)" 1 0 "" 2 4 54 100 \ "Port number" 3 0 "${portno}" 4 4 54 100 \ 2> "${DIALOG_RESULTFILE}" if [ $? -ne 0 ] then clear echo Cancelled exit 1 fi { read -r NEW_TCP_BIND_HOST read -r NEW_TCP_BIND_SVC } < "${DIALOG_RESULTFILE}" if [ "${NEW_TCP_BIND_HOST}" != "${HOSTS[${count}]}" ] then bind_changes=1 HOSTS[${count}]="${NEW_TCP_BIND_HOST}" fi if [ "${NEW_TCP_BIND_SVC}" != "${SERVICES[${count}]}" ] then bind_changes=1 SERVICES[${count}]="${NEW_TCP_BIND_SVC}" fi # Need to make sure there are no repeats because it causes tcpserial to error if there # are. The exit occurs within the function so if it returns there are no repeats. tcpserial_check_repeat_server $count ((count++)) else if [ $count -eq 0 ] then dialog --title "${titletext} - ERRORS FOUND" \ --msgbox "At least one port to bind to must be specified in simple server mode" \ 0 0 2> "${DIALOG_RESULTFILE}" else break fi fi done # Now we've finished the Bind variables we need to put things back together # into a single bind variable. This is set in NEW_TCP_BIND if [ $bind_changes -ne 0 ] then reassemble_bind $bind_changes $count else NEW_TCP_BIND="${TCP_BIND}" fi # Now we need to display any ipfilter values currently set count=0 while [ $count -lt $num_reject ] do display_tcpserial_ipfilter "${titletext} - Simple server filter - current settings" \ "${REJECT[${count}]}" "${ADDRESS[${count}]}" NEW_TCP_FILTER_ADDR="`cat ${DIALOG_RESULTFILE}`" if [ "${NEW_TCP_FILTER_ADDR}" != "${ADDRESS[${count}]}" ] then ipfilter_changes=1 ADDRESS[${count}]="${NEW_TCP_FILTER_ADDR}" fi if [ "${REJECT[count]}" = "false" ] then default="" else default="--defaultno" fi # If this has been cleared then we don't need to continue on with this pass. if [ -z "${NEW_TCP_FILTER_ADDR}" ] then ((count++)) continue fi display_yesno "${titletext} - Simple server filter options" \ "Accept calls from this address ${NEW_TCP_FILTER_ADDR} ? (Yes - accept, No - reject)" \ 0 0 $default if [ $? -eq 0 ] then if [ "${REJECT[count]}" = "true" ] then ipfilter_changes=1 fi REJECT[${count}]="false" else if [ "${REJECT[count]}" = "false" ] then ipfilter_changes=1 fi REJECT[${count}]="true" fi ((count++)) done while true do # Now we need to set the addresses to accept or reject connections from. # These may just be blank. display_yesno "${titletext} - Simple server filter options" \ "Add addresses to accept or reject connections from. \ There are currently $count defined." 0 0 --defaultno if [ $? -eq 0 ] then ipfilter_changes=1 display_tcpserial_ipfilter "${titletext} - Simple server filter - new values" "" "" NEW_TCP_FILTER_ADDR="`cat ${DIALOG_RESULTFILE}`" ADDRESS[${count}]="${NEW_TCP_FILTER_ADDR}" display_yesno "${titletext} - Simple server filter options" \ "Accept calls from this address ${NEW_TCP_FILTER_ADDR} ? (Yes for accept, No for reject)" if [ $? -eq 0 ] then REJECT[${count}]="false" else REJECT[${count}]="true" fi else break fi ((count++)) done # Now we've finished the Filter variables we need to put things back together # into a single IPFILTER variable. This is set in NEW_TCP_IPFILTER if [ $ipfilter_changes -ne 0 ] then reassemble_ipfilter $ipfilter_changes $count else NEW_TCP_IPFILTER="${TCP_IPFILTER}" fi } # display_tcpserial_client_options - Display the client options and update them # $1 is the titletext to display display_tcpserial_client_options() { local titletext="$1" # In client mode the server options will be unchanged so just pass through # the current settings to the new ones. NEW_TCP_BIND="${TCP_BIND}" NEW_TCP_IPFILTER="${TCP_IPFILTER}" while true do dialog --title "${titletext} Simple client address options" \ --form "Enter hostname and port number to connect to (cannot be blank)" \ 0 0 0 \ "Hostname" 1 0 "${TCP_CLIENT_ADDR}" 2 4 54 100 \ "Port number" 3 0 "${TCP_CLIENT_PORT}" 4 4 54 100 \ 2> "${DIALOG_RESULTFILE}" if [ $? -ne 0 ] then clear echo Cancelled exit 1 fi { read -r NEW_TCP_CLIENT_ADDR read -r NEW_TCP_CLIENT_PORT } < "${DIALOG_RESULTFILE}" if [ -n "${NEW_TCP_CLIENT_ADDR}" ] then if [ "${NEW_TCP_CLIENT_ADDR}" = "${TCP_CLIENT_ADDR}" ] then NEW_TCP_CLIENT_ADDR="NOCHANGE" fi else continue fi if [ -n "${NEW_TCP_CLIENT_PORT}" ] then if [ "${NEW_TCP_CLIENT_PORT}" = "${TCP_CLIENT_PORT}" ] then NEW_TCP_CLIENT_PORT="NOCHANGE" fi else continue fi break done # if both are unchanged if [ "${NEW_TCP_CLIENT_ADDR}" = "NOCHANGE" -a "${NEW_TCP_CLIENT_PORT}" = "NOCHANGE" ] then NEW_TCP_SERVER="${TCP_SERVER}" else if [ "${NEW_TCP_CLIENT_ADDR}" = "NOCHANGE" ] then NEW_TCP_SERVER="${TCP_CLIENT_ADDR},${NEW_TCP_CLIENT_PORT}" else if [ "${NEW_TCP_CLIENT_PORT}" = "NOCHANGE" ] then NEW_TCP_SERVER="${NEW_TCP_CLIENT_ADDR},${TCP_CLIENT_PORT}" else NEW_TCP_SERVER="${NEW_TCP_CLIENT_ADDR},${NEW_TCP_CLIENT_PORT}" fi fi fi } # Go through the list of things that the user can change in the tcpserial config # file. # $1 - portname # If something is Cancelled or there is an error then this can exit. serial_tcpserial_parameters() { local port=$1 local titletext HOSTS=() SERVICES=() ADDRESS=() REJECT=() TCP_CFG_FILE="${SERIAL_CFDIR}/tcpserial/${port}" # Set default values DEF_TCP_MODE="simple_server" case "${port}" in DataOut|PortDO|gsl-tty-00) DEF_TCP_BIND_SVC=10000 ;; PortA|gsl-tty-01) DEF_TCP_BIND_SVC=10001 ;; PortB|gsl-tty-02) DEF_TCP_BIND_SVC=10002 ;; PortC|gsl-tty-03) DEF_TCP_BIND_SVC=10003 ;; PortD|gsl-tty-04) DEF_TCP_BIND_SVC=10004 ;; PortE|gsl-tty-05) DEF_TCP_BIND_SVC=10005 ;; PortF|gsl-tty-06) DEF_TCP_BIND_SVC=10006 ;; PortG|gsl-tty-07) DEF_TCP_BIND_SVC=10007 ;; gsl-tty-08) DEF_TCP_BIND_SVC=10008 ;; gsl-tty-09) DEF_TCP_BIND_SVC=10009 ;; gsl-tty-10) DEF_TCP_BIND_SVC=10010 ;; gsl-tty-11) DEF_TCP_BIND_SVC=10011 ;; gsl-tty-12) DEF_TCP_BIND_SVC=10012 ;; gsl-tty-13) DEF_TCP_BIND_SVC=10013 ;; gsl-tty-14) DEF_TCP_BIND_SVC=10014 ;; gsl-tty-15) DEF_TCP_BIND_SVC=10015 ;; gsl-tty-16) DEF_TCP_BIND_SVC=10016 ;; gsl-tty-17) DEF_TCP_BIND_SVC=10017 ;; gsl-tty-18) DEF_TCP_BIND_SVC=10018 ;; gsl-tty-19) DEF_TCP_BIND_SVC=10019 ;; gsl-tty-20) DEF_TCP_BIND_SVC=10020 ;; gsl-tty-21) DEF_TCP_BIND_SVC=10021 ;; gsl-tty-22) DEF_TCP_BIND_SVC=10022 ;; gsl-tty-23) DEF_TCP_BIND_SVC=10023 ;; PortSA1) DEF_TCP_BIND_SVC=10091 ;; PortSA2) DEF_TCP_BIND_SVC=10092 ;; Console|SerialConsole) DEF_TCP_BIND_SVC=10099 ;; esac DEF_TCP_IPFILTER="" DEF_TCP_SERVER="" # Get current values or set defaults if file doesn't already exist if [ -r $TCP_CFG_FILE ] then # get the current values for each item TCP_MODE="`cfget ${TCP_CFG_FILE} mode`" TCP_BIND="`cfget ${TCP_CFG_FILE} bind`" TCP_IPFILTER="`cfget ${TCP_CFG_FILE} ipfilter`" TCP_SERVER="`cfget ${TCP_CFG_FILE} server`" else # set empty values for each item TCP_MODE="" TCP_BIND="" TCP_IPFILTER="" TCP_SERVER="" fi # Now go through the values giving user a choice titletext="${port} TCP converter config" # mode (default simple_server) display_tcpserial_mode "${titletext}" "${TCP_MODE}" "${DEF_TCP_MODE}" NEW_TCP_MODE="`cat ${DIALOG_RESULTFILE}`" # Separate the bind variable out in to it's component parts # Sets up two arrays named HOSTS and SERVICES read_bind_values "${TCP_BIND}" num_bind_items=$? # Separate the ipfilter variable out in to it's component parts # Sets up two arrays named ADDRESS and REJECT read_ipfilter_values "${TCP_IPFILTER}" num_ipfilter_items=$? # Separate the server variable out into it's component parts # Sets up two global variables TCP_CLIENT_ADDR and TCP_CLIENT_PORT read_server_values "${TCP_SERVER}" # What we do now is dependent on the value just set for the mode # If we've just changed it to simple_server or it was already set # to that and it hasn't changed if [ "${NEW_TCP_MODE}" = "simple_server" ] then display_tcpserial_server_options "${titletext}" ${num_bind_items} ${num_ipfilter_items} fi # Now check for simple_client being selected if [ "${NEW_TCP_MODE}" = "simple_client" ] then display_tcpserial_client_options "${titletext}" fi cconf_create_config_file $TCP_CFG_FILE # Now we need to make the updates that have been done here before returning update_config_file ${TCP_CFG_FILE} ${NEW_TCP_MODE} \ "${NEW_TCP_BIND}" "${NEW_TCP_IPFILTER}" "${NEW_TCP_SERVER}" } # vim: ts=4:sw=4:expandtab:syntax=sh