Initialize Git Repository: 'DDNS-Client'

ddns-client/usr/lib/ddns-client/check_conditions

@@ -0,0 +1,84 @@
+#!/usr/bin/bash
+
+
+###
+#
+# Options Section
+#
+###
+
+set -e
+set -u
+set -o pipefail
+
+
+###
+#
+# Variable Section
+#
+###
+
+source '/etc/ddns-client.conf'
+
+
+###
+#
+# Runtime Environment
+#
+###
+
+if [[ "${TIMER}" != 'true' ]]; then
+  exit 1
+fi
+if [[ -z "${HOSTNAME}" ]]; then
+  /usr/bin/echo "ERROR: The configuration option 'HOSTNAME' has not been set."
+  exit 1
+fi
+if ! /usr/bin/ping -c '1' 'ident.me' &> '/dev/null'; then
+  /usr/bin/echo "ERROR: The Identity Provider 'ident.me' is not reachable."
+  exit 1
+fi
+case "${PROVIDER}" in
+  webstuebchen)
+    if ! /usr/bin/ping -c '1' 'dns.webstuebchen.com' &> '/dev/null'; then
+      /usr/bin/echo "ERROR: The DNS Provider 'webstuenchen' is not reachable."
+      exit 1
+    fi
+    if [[ -z "${USERNAME}" ]]; then
+      /usr/bin/echo "ERROR: The configuration option 'USERNAME' has not been set."
+      exit 1
+    fi
+    if [[ -z "${PASSWORD}" ]]; then
+      /usr/bin/echo "ERROR: The configuration option 'PASSWORD' has not been set."
+      exit 1
+    fi
+  ;;
+  *)
+    /usr/bin/echo "Error: The configuration option 'PROVIDER' has a wrong value."
+    exit 1
+  ;;
+esac
+case "${IP}" in
+  IP4|IP6|IP64)
+    true
+  ;;
+  *)
+    /usr/bin/echo "ERROR: The configuration option 'IP' has a wrong value."
+    exit 1
+  ;;
+esac
+case "${NETWORK}" in
+  private)
+    if [[ -z "${INTERFACE}" ]]; then
+      /usr/bin/echo 'ERROR: The configuration option 'INTERFACE' has not been set.'
+      exit 1
+    fi
+  ;;
+  public)
+    true
+  ;;
+  *)
+    /usr/bin/echo "ERROR: The configuration option 'NETWORK' has a wrong value."
+    exit 1
+  ;;
+esac

ddns-client/usr/lib/ddns-client/start_update

@@ -0,0 +1,161 @@
+#!/usr/bin/bash
+
+
+###
+#
+# Options Section
+#
+###
+
+set -e
+set -o pipefail
+
+
+###
+#
+# Variable Section
+#
+###
+
+source '/etc/ddns-client.conf'
+
+
+###
+#
+# Function Section
+#
+###
+
+function ip_check () {
+  case "${IP}" in
+    IP4)
+      if [[ -z "${IP4_ADDRESS}" ]]; then
+        /usr/bin/echo 'ERROR: The Identity Provider did not respond with an valid IP address.'
+        exit 1
+      fi
+    ;;
+    IP6)
+      if [[ -z "${IP6_ADDRESS}" ]]; then
+        /usr/bin/echo 'ERROR: The Identity Provider did not respond with an valid IP address.'
+        exit 1
+      fi
+    ;;
+    IP64)
+      if [[ -z "${IP4_ADDRESS}" ]] || \
+         [[ -z "${IP6_ADDRESS}" ]]; then
+        /usr/bin/echo 'ERROR: The Identity Provider did not respond with an valid IP address.'
+        exit 1
+      fi
+    ;;
+  esac
+}
+
+
+###
+#
+# Runtime Environment
+#
+###
+
+if [[ -n "${INVOCATION_ID}" ]]; then
+  if ! source '/usr/lib/ddns-client/check_conditions'; then
+    exit 1
+  fi
+fi
+case "${NETWORK}" in
+  private)
+    if [[ ! -L "/sys/class/net/${INTERFACE}" ]]; then
+      /usr/bin/echo 'ERROR: The options 'INTERFACE' in the configuration file is not existing.'
+      exit 1
+    fi
+    case "${IP}" in
+      IP4)
+        if type ip >/dev/null 2>&1; then
+          IP4_ADDRESS=$(/usr/bin/ip -4 addr show "${INTERFACE}" | /usr/bin/grep ---only-matching --perl-regexp '(?<=inet\s)\d+(\.\d+){3}')
+        elif type ifconfig >/dev/null 2>&1; then
+          IP4_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep 'inet ' | /usr/bin/mawk '{print $2}')
+        fi
+      ;;
+      IP6)
+        if type ip >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/bin/ip -6 addr show "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --extended-regexp '^fd[0-9a-fA-F]{2}::')
+        elif type ifconfig >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep --extended-regexp 'inet6 (fd[0-9a-fA-F]{2}::|::1)' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}')
+        fi
+      ;;
+      IP64)
+        if type ip >/dev/null 2>&1; then
+          IP4_ADDRESS=$(/usr/bin/ip -4 addr show "${INTERFACE}" | /usr/bin/grep ---only-matching --perl-regexp '(?<=inet\s)\d+(\.\d+){3}')
+          IP6_ADDRESS=$(/usr/bin/ip -6 addr show "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --extended-regexp '^fd[0-9a-fA-F]{2}::')
+        elif type ifconfig >/dev/null 2>&1; then
+          IP4_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep 'inet ' | /usr/bin/mawk '{print $2}')
+          IP6_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep --extended-regexp 'inet6 (fd[0-9a-fA-F]{2}::|::1)' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}')
+        fi
+    esac
+    ip_check
+  ;;
+  public)
+    case "${IP}" in
+      IP4)
+        IP4_ADDRESS=$(/usr/bin/wget --quiet --output-document='-' --timeout='3' --inet4-only --https-only --no-hsts 'ident.me')
+      ;;
+      IP6)
+        if type ip >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/bin/ip -6 addr show "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --invert-match --extended-regexp '^(fd[0-9a-fA-F]{2}::|fe[0-9a-fA-F]{2}::)')
+        elif type ifconfig >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --invert-match --extended-regexp '^(fd[0-9a-fA-F]{2}::|fe[0-9a-fA-F]{2}::)')
+        fi
+      ;;
+      IP64)
+        IP4_ADDRESS=$(/usr/bin/wget --quiet --output-document='-' --timeout='3' --inet4-only --https-only --no-hsts 'ident.me')
+        if type ip >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/bin/ip -6 addr show "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --invert-match --extended-regexp '^(fd[0-9a-fA-F]{2}::|fe[0-9a-fA-F]{2}::)')
+        elif type ifconfig >/dev/null 2>&1; then
+          IP6_ADDRESS=$(/usr/sbin/ifconfig "${INTERFACE}" | /usr/bin/grep 'inet6' | /usr/bin/mawk '{split($2,a,"/"); print a[1]}' | /usr/bin/grep --invert-match --extended-regexp '^(fd[0-9a-fA-F]{2}::|fe[0-9a-fA-F]{2}::)')
+        fi
+      ;;
+    esac
+    ip_check
+  ;;
+esac
+for HOST in ${HOSTNAME}; do
+  case "${PROVIDER}" in
+    webstuebchen)
+      URLIP4="https://dns.webstuebchen.com/${USERNAME}/update.php?user=${USERNAME}&password=${PASSWORD}&ipv4=${IP4_ADDRESS}&domain=${HOST}"
+      URLIP6="https://dns.webstuebchen.com/${USERNAME}/update.php?user=${USERNAME}&password=${PASSWORD}&ipv6=${IP6_ADDRESS}&domain=${HOST}"
+      URLIP64="https://dns.webstuebchen.com/${USERNAME}/update.php?user=${USERNAME}&password=${PASSWORD}&ipv4=${IP4_ADDRESS}&ipv6=${IP6_ADDRESS}&domain=${HOST}"
+    ;;
+  esac
+  case "${IP}" in
+    IP4)
+      if /usr/bin/wget --quiet --output-document='-' --no-hsts "${URLIP4}"; then
+        /usr/bin/echo "The DNS [A] Record named '${HOST}' was updated to '${IP4_ADDRESS}'."
+      else
+        /usr/bin/echo "ERROR: The DNS [A] Record named '${HOST}' can not be updated."
+        exit 1
+      fi
+    ;;
+    IP6)
+      if /usr/bin/wget --quiet --output-document='-' --no-hsts "${URLIP6}"; then
+        /usr/bin/echo "The DNS [AAAA] Record named '${HOST}' was updated to '${IP6_ADDRESS}'."
+      else
+        /usr/bin/echo "ERROR: The DNS [AAAA] Record named '${HOST}' can not be updated."
+        exit 1
+      fi
+    ;;
+    IP64)
+      if /usr/bin/wget --quiet --output-document='-' --no-hsts "${URLIP4}"; then
+        /usr/bin/echo "The DNS [A] Record named '${HOST}' was updated to '${IP4_ADDRESS}'."
+      else
+        /usr/bin/echo "ERROR: The DNS [A] Record named '${HOST}' can not be updated."
+        exit 1
+      fi
+      if /usr/bin/wget --quiet --output-document='-' --no-hsts "${URLIP6}"; then
+        /usr/bin/echo "The DNS [AAAA] Record named '${HOST}' was updated to '${IP6_ADDRESS}'."
+      else
+        /usr/bin/echo "ERROR: The DNS [AAAA] Record named '${HOST}' can not be updated."
+        exit 1
+      fi
+    ;;
+  esac
+done