✨ add DynDNS2 support for noip.com

✨ add man page

.gitchangelog.rc

@@ -82,24 +82,34 @@ ignore_regexps = [
 ## whenever you are tweaking this variable.
 ##
 section_regexps = [
-    ('New', [
-        r'^:sparkles\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+    ('Features', [
+        r'^[fF]eat\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
      ]),
-    ('Changes', [
-        r'^:wrench\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+    ('Added', [
+        r'^[aA]dd\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+     ]),
+    ('Changed', [
+        r'^[cC]hange\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+     ]),
+    ('Deprecated', [
+        r'^[dD]epricated\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+     ]),
+    ('Removed', [
+        r'^[rR]emove\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
      ]),
     ('Fix', [
-        r'^:bug\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+        r'^[fF]ix\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+     ]),
+    ('Security', [
+        r'^[sS]ec\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
      ]),
     ('Documentation', [
-        r'^:memo\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
-     ]),     
-    ('Remove', [
-        r'^:fire\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
+        r'^[dD]oc\s*:\s*((dev|use?r|pkg|test|doc)\s*:\s*)?([^\n]*)$',
      ]),
 
-    ('Other', None ## Match all lines
-     ),
+
+    #('Other', None ## Match all lines
+    # ),
 
 ]
 

Dockerfile

@@ -1,4 +1,5 @@
 FROM alpine:latest
+
 RUN \
 apk update \
 && \
@@ -7,6 +8,13 @@ bash \
 curl \
 jq \
 bind-tools
+
 WORKDIR /usr/src/app
+
 COPY . .
+
 ENTRYPOINT ["/bin/bash", "/usr/src/app/dynb.sh"]
+
+LABEL org.opencontainers.image.source="https://github.com/EV21/dynb"
+LABEL org.opencontainers.image.description="DynB - dynamic DNS update client."
+LABEL org.opencontainers.image.licenses="MIT"

dynb.sh

@@ -51,6 +51,7 @@ _network_interface=
 ######################################################
 ## You don't need to change the following variables ##
 _INWX_JSON_API_URL=https://api.domrobot.com/jsonrpc/
+_internet_connectivity_test_server=https://www.google.de
 _new_IPv4=
 _new_IPv6=
 _dns_records=
@@ -65,7 +66,7 @@ _response=
 _statusHostname=
 _statusUsername=
 _statusPassword=
-_version=0.1.2
+_version=0.3.0
 _userAgent="DynB/$_version github.com/EV21/dynb"
 _configFile=$HOME/.local/share/dynb/.env
 _statusFile=/tmp/dynb.status
@@ -81,6 +82,23 @@ red_color_bg="\e[0;101m${expand_bg}"
 bold="\e[1m"
 reset_color_modification="\e[0m"
 
+REGEX_IPv4="^(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$"
+REGEX_IPv6="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$"
+
+function is_IPv4_address() {
+  if [[ $1 =~ $REGEX_IPv4 ]]
+  then return 0
+  else return 1
+  fi
+}
+
+function is_IPv6_address() {
+  if [[ $1 =~ $REGEX_IPv6 ]]
+  then return 0
+  else return 1
+  fi
+}
+
 function loopMode() {
   if [[ $_loopMode -eq 1 ]]; then
     return 0
@@ -219,7 +237,7 @@ function updateRecord() {
         --request POST $_INWX_JSON_API_URL \
         --data "$request"
     )
-    echo -e "$(echo "$_response" | jq --raw-output '.msg')\n Domain: $DYNB_DYN_DOMAIN\n new IPv${1}: $IP"
+    infoMessage "$(echo "$_response" | jq --raw-output '.msg')\n Domain: $DYNB_DYN_DOMAIN\n New IPv${1}: $IP"
   fi
 }
 
@@ -233,6 +251,7 @@ function dynupdate() {
   DESEC_DYNDNS_UPDATE_URL="https://update.dedyn.io/?"
   DUCKDNS_DYNDNS_UPDATE_URL="https://www.duckdns.org/update?domains=$DYNB_DYN_DOMAIN&token=$DYNB_TOKEN&"
   DYNV6_DYNDNS_UPDATE_URL="https://dynv6.com/api/update?zone=$DYNB_DYN_DOMAIN&token=$DYNB_TOKEN&"
+  NOIP_DYNDNS_UPDATE_URL="https://dynupdate.no-ip.com/nic/update?hostname=$DYNB_DYN_DOMAIN&"
 
   case $DYNB_SERVICE_PROVIDER in
     inwx* | INWX*)
@@ -241,6 +260,9 @@ function dynupdate() {
     deSEC* | desec* | dedyn*)
       dyndns_update_url="${DESEC_DYNDNS_UPDATE_URL}"
       ;;
+    noip* | no-ip*)
+      dyndns_update_url="$NOIP_DYNDNS_UPDATE_URL"
+      ;;
     dynv6*)
       dyndns_update_url="${DYNV6_DYNDNS_UPDATE_URL}"
       myip_str=ipv4
@@ -271,7 +293,7 @@ function dynupdate() {
 
   ## request ##
   case $DYNB_SERVICE_PROVIDER in
-    inwx* | INWX*)
+    inwx* | INWX* | noip* | no-ip*)
       _response=$(curl --silent "$_interface_str" \
         --user-agent "$_userAgent" \
         --user "$DYNB_USERNAME":"$DYNB_PASSWORD" \
@@ -293,6 +315,7 @@ function dynupdate() {
       ;;
   esac
 
+
   case $_response in
     good* | OK* | "addresses updated")
       if [[ $_response == "good 127.0.0.1" ]]; then
@@ -437,6 +460,11 @@ function ipHasChanged() {
   case ${1} in
     4)
       remote_ip=$(getRemoteIP 4 $_ipv4_checker)
+      if ! is_IPv4_address "$remote_ip"
+      then
+        errorMessage "The response from the IP check server is not an IPv4 address: $remote_ip"
+        return 0
+      fi
       if [[ $DYNB_UPDATE_METHOD == domrobot ]]; then
         dns_ip=$(getDNSIP A)
       else
@@ -449,13 +477,20 @@ function ipHasChanged() {
           errorMessage "DNS request failed $dig_response"
           return 0
         fi
-        dns_ip=$dig_response
+        # If the dns resolver lists multiple records in the answer section we filter the first line
+        # using short option "-n" and not "--lines" because of alpines limited BusyBox head command
+        dns_ip=$(echo "$dig_response" | head -n 1)
       fi
       _new_IPv4=$remote_ip
-      debugMessage "New IPv4: $_new_IPv4 old was: $dns_ip"
+      debugMessage "IPv4 from remote IP check server: $_new_IPv4, IPv4 from DNS: $dns_ip"
       ;;
     6)
       remote_ip=$(getRemoteIP 6 $_ipv6_checker)
+      if ! is_IPv6_address "$remote_ip"
+      then
+        errorMessage "The response from the IP check server is not an IPv6 address: $remote_ip"
+        return 0
+      fi
       if [[ $DYNB_UPDATE_METHOD == domrobot ]]; then
         dns_ip=$(getDNSIP AAAA)
       else
@@ -468,18 +503,22 @@ function ipHasChanged() {
           errorMessage "DNS request failed $dig_response"
           return 0
         fi
-        dns_ip=$dig_response
+        # If the dns server lists multiple records in the answer section we filter the first line
+        dns_ip=$(echo "$dig_response" | head -n 1)
       fi
       _new_IPv6=$remote_ip
-      debugMessage "New IPv6: $_new_IPv6 old was: $dns_ip"
+      debugMessage "IPv6 from remote IP check server: $_new_IPv6, IPv4 from DNS: $dns_ip"
       ;;
     *) ;;
-
   esac
 
   if [[ "$remote_ip" == "$dns_ip" ]]; then
     return 0
   else
+    case ${1} in
+    4) infoMessage "New IPv4: $_new_IPv4 old was: $dns_ip";;
+    6) infoMessage "New IPv6: $_new_IPv6 old was: $dns_ip";;
+    esac
     return 1
   fi
 }
@@ -690,6 +729,43 @@ function doUpdates() {
   fi
 }
 
+function ipv6_is_not_working() {
+  curl --ipv6 --head --silent --max-time 1 "$_internet_connectivity_test_server" > /dev/null
+  status_code=$?
+  if [[ $status_code -gt 0 ]]
+  then return 0
+  else return 1
+  fi
+}
+
+function ipv4_is_not_working() {
+  curl --ipv4 --head --silent --max-time 1 "$_internet_connectivity_test_server" > /dev/null
+  status_code=$?
+  if [[ $status_code -gt 0 ]]
+  then return 0
+  else return 1
+  fi
+}
+
+function check_internet_connection() {
+  if [[ $_is_IPv4_enabled == true ]]
+  then
+    if ipv4_is_not_working
+    then
+      _is_IPv4_enabled="false"
+      errorMessage "Your IPv4 internet connection does not work."
+    fi
+  fi
+  if [[ $_is_IPv6_enabled == true ]]
+  then
+    if ipv6_is_not_working
+    then
+      _is_IPv6_enabled="false"
+      errorMessage "Your IPv6 internet connection does not work."
+    fi
+  fi
+}
+
 #################
 ## MAIN method ##
 #################
@@ -717,6 +793,7 @@ function dynb() {
   ## parameters and checks
   handleParameters
   checkDependencies
+  check_internet_connection
 
   if loopMode; then
     while :; do