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102 lines
3.4 KiB
102 lines
3.4 KiB
#!/bin/sh
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# /usr/lib/ddns/luci_dns_helper.sh
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#
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#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
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#
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# Written in August 2014 by
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#.Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
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# This script is used by luci-app-ddns
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# - getting registered IP
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# - check if possible to get local IP
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# - verifing given DNS- or Proxy-Server
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#
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# variables in small chars are read from /etc/config/ddns as parameter given here
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# variables in big chars are defined inside these scripts as gloval vars
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# variables in big chars beginning with "__" are local defined inside functions only
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# set -vx #script debugger
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[ $# -lt 2 ] && exit 1
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. /usr/lib/ddns/dynamic_dns_functions.sh # global vars are also defined here
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# preset some variables, wrong or not set in dynamic_dns_functions.sh
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SECTION_ID="lucihelper"
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LOGFILE="$LOGDIR/$SECTION_ID.log"
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DATFILE="$RUNDIR/$SECTION_ID.$$.dat" # save stdout data of WGet and other extern programs called
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ERRFILE="$RUNDIR/$SECTION_ID.$$.err" # save stderr output of WGet and other extern programs called
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VERBOSE_MODE=0 # no console logging
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# global variables normally set by reading DDNS UCI configuration
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use_syslog=0 # no syslog
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use_logfile=0 # by default no logfile, can be changed here
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__RET=0
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case "$1" in
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get_registered_ip)
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local IP
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domain=$2 # Hostname/Domain
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use_ipv6=${3:-"0"} # Use IPv6 - default IPv4
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force_ipversion=${4:-"0"} # Force IP Version - default 0 - No
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force_dnstcp=${5:-"0"} # Force TCP on DNS - default 0 - No
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dns_server=${6:-""} # DNS server - default No DNS
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write_log 7 "-----> get_registered_ip IP"
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get_registered_ip IP
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__RET=$?
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[ $__RET -ne 0 ] && IP=""
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echo -n "$IP" # suppress LF
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;;
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verify_dns)
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# $2 : dns-server to verify # no need for force_dnstcp because
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# verify with nc (netcat) uses tcp anyway
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use_ipv6=${3:-"0"} # Use IPv6 - default IPv4
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force_ipversion=${4:-"0"} # Force IP Version - default 0 - No
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write_log 7 "-----> verify_dns '$2'"
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verify_dns "$2"
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__RET=$?
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;;
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verify_proxy)
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# $2 : proxy string to verify
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use_ipv6=${3:-"0"} # Use IPv6 - default IPv4
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force_ipversion=${4:-"0"} # Force IP Version - default 0 - No
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write_log 7 "-----> verify_proxy '$2'"
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verify_proxy "$2"
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__RET=$?
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;;
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get_local_ip)
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local IP
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use_ipv6="$2" # Use IPv6
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ip_source="$3" # IP source
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ip_network="$4" # set if source = "network" otherwise "-"
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ip_url="$5" # set if source = "web" otherwise "-"
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ip_interface="$6" # set if source = "interface" itherwiase "-"
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ip_script="$7" # set if source = "script" otherwise "-"
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proxy="$8" # proxy if set
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force_ipversion="0" # not needed but must be set
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use_https="0" # not needed but must be set
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[ -n "$proxy" -a "$ip_source" = "web" ] && {
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# proxy defined, used for ip_source=web
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export HTTP_PROXY="http://$proxy"
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export HTTPS_PROXY="http://$proxy"
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export http_proxy="http://$proxy"
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export https_proxy="http://$proxy"
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}
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# don't need IP only the return code
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[ "$ip_source" = "web" -o "$ip_source" = "script" ] && {
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# we wait only 3 seconds for an
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# answer from "web" or "script"
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write_log 7 "-----> timeout 3 -- get_local_ip IP"
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timeout 3 -- get_local_ip IP
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} || {
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write_log 7 "-----> get_local_ip IP"
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get_local_ip IP
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}
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__RET=$?
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;;
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*)
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__RET=255
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;;
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esac
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# remove out and err file
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[ -f $DATFILE ] && rm -f $DATFILE
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[ -f $ERRFILE ] && rm -f $ERRFILE
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return $__RET
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