applications/luci-ddns/root/usr/lib/ddns/dynamic_dns_lucihelper.sh

   1 #!/bin/sh
   2 # /usr/lib/ddns/luci_dns_helper.sh
   3 #
   4 # Written by Christian Schoenebeck in August 2014 to support:
   5 # this script is used by luci-app-ddns
   6 # - getting registered IP
   7 # - check if possible to get local IP
   8 # - verifing given DNS- or Proxy-Server
   9 #
  10 # variables in small chars are read from /etc/config/ddns
  11 # variables in big chars are defined inside these scripts as gloval vars
  12 # variables in big chars beginning with "__" are local defined inside functions only
  13 # set -vx       #script debugger
  14
  15 [ $# -lt 2 ] && exit 1
  16
  17 . /usr/lib/ddns/dynamic_dns_functions.sh        # global vars are also defined here
  18
  19 # set -vx       #script debugger
  20
  21 # preset some variables wrong or not set in dynamic_dns_functions.sh
  22 SECTION_ID="dynamic_dns_lucihelper"
  23 LOGFILE="$LOGDIR/$SECTION_ID.log"
  24 LUCI_HELPER="ACTIV"     # supress verbose and critical logging
  25 # global variables normally set by reading DDNS UCI configuration
  26 use_logfile=0
  27 use_syslog=0
  28
  29 case "$1" in
  30         get_registered_ip)
  31                 local IP
  32                 domain=$2                       # Hostname/Domain
  33                 use_ipv6=${3:-"0"}              # Use IPv6 - default IPv4
  34                 force_ipversion=${4:-"0"}       # Force IP Version - default 0 - No
  35                 force_dnstcp=${5:-"0"}          # Force TCP on DNS - default 0 - No
  36                 dns_server=${6:-""}             # DNS server - default No DNS
  37                 get_registered_ip IP
  38                 [ $? -ne 0 ] && IP=""
  39                 echo -n "$IP"                   # suppress LF
  40                 ;;
  41         verify_dns)
  42                 # $2 == dns-server to verify    # no need for force_dnstcp because
  43                                                 # verify with nc (netcat) uses tcp anyway
  44                 use_ipv6=${3:-"0"}              # Use IPv6 - default IPv4
  45                 force_ipversion=${4:-"0"}       # Force IP Version - default 0 - No
  46                 verify_dns "$2"
  47                 ;;
  48         verify_proxy)
  49                 # $2 == proxy string to verify
  50                 use_ipv6=${3:-"0"}              # Use IPv6 - default IPv4
  51                 force_ipversion=${4:-"0"}       # Force IP Version - default 0 - No
  52                 verify_proxy "$2"
  53                 ;;
  54         get_local_ip)
  55                 local IP
  56                 use_ipv6="$2"                   # Use IPv6
  57                 ip_source="$3"                  # IP source
  58                 ip_network="$4"                 # set if source = "network" otherwise "-"
  59                 ip_url="$5"                     # set if source = "web" otherwise "-"
  60                 ip_interface="$6"               # set if source = "interface" itherwiase "-"
  61                 ip_script="$7"                  # set if source = "script" otherwise "-"
  62                 proxy="$8"                      # proxy if set
  63                 force_ipversion="0"             # not needed but must be set
  64                 use_https="0"                   # not needed but must be set
  65                 [ -n "$proxy" -a "$ip_source" == "web" ] && {
  66                         # proxy defined, used for ip_source=web
  67                         export HTTP_PROXY="http://$proxy"
  68                         export HTTPS_PROXY="http://$proxy"
  69                         export http_proxy="http://$proxy"
  70                         export https_proxy="http://$proxy"
  71                 }
  72                 # don't need IP only the return code
  73                 [ "$ip_source" == "web" -o  "$ip_source" == "script"] && {
  74                         # we wait only 3 seconds for an
  75                         # answer from "web" or "script"
  76                         __timeout 3 -- get_local_ip IP
  77                 } || get_local_ip IP
  78                 ;;
  79         *)
  80                 return 1
  81                 ;;
  82 esac