Initialize Git Repository: 'DDNS-Client'

root/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