added environment variable support to script

Cielquan · Nov 27, 2019 · 8cff59e · 8cff59e
1 parent 9ba775b
commit 8cff59e
Showing 1 changed file with 63 additions and 0 deletions.
diff --git a/start_doth_dns.bash b/start_doth_dns.bash
@@ -174,6 +174,27 @@ else
 fi
 
 
+# ##########################################################################################
+# Grabbing EnvVars
+if [[ ${_FLAG_FRESH} == 'y' ]]; then
+  printf "%bINFO:   %b Skipped loading of Environment Variables.\n\n" "${CYAN}" "${BLANK}"
+else
+  if \
+  _ENV_ARCHITECTURE=${DOTH_ARCHITECTURE} &&
+  _ENV_INTERFACE=${DOTH_INTERFACE} &&
+  _ENV_HOST_IP=${DOTH_HOST_IP} &&
+  _ENV_HOST_NAME=${DOTH_HOST_NAME} &&
+  _ENV_TIMEZONE=${DOTH_TIMEZONE} &&
+  _ENV_DOMAIN=${DOTH_DOMAIN}
+  then
+    printf "%bINFO:   %b Environment Variables loaded.\n\n" "${CYAN}" "${BLANK}"
+  else
+    printf "%bWARNING:%b No Environment Variables could be loaded. Falling back to self gather information.\n\n" \
+            "${ORANGE}" "${BLANK}"
+  fi
+fi
+
+
 # ##########################################################################################
 ### Check and set ENV Vars
 # Set ARCHITECTURE
@@ -191,6 +212,13 @@ elif [[ -n "${ARCHITECTURE}" ]]; then
     printf "%bERROR:  %b Failed to set ARCHITECTURE by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_ARCHITECTURE}" ]]; then
+  if _ARCHITECTURE="${_ENV_ARCHITECTURE}"; then
+    printf "%bINFO:   %b ARCHITECTURE set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_ARCHITECTURE}"
+  else
+    printf "%bERROR:  %b Failed to set ARCHITECTURE by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_ARCHITECTURE}" ]]; then
     if _ARCHITECTURE=$(lscpu | grep Architecture: | awk '{print $2}'); then
       printf "%bINFO:   %b ARCHITECTURE was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_ARCHITECTURE}"
@@ -217,6 +245,13 @@ elif [[ -n "${INTERFACE}" ]]; then
     printf "%bERROR:  %b Failed to set INTERFACE by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_INTERFACE}" ]]; then
+  if _INTERFACE="${_ENV_INTERFACE}"; then
+    printf "%bINFO:   %b INTERFACE set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_INTERFACE}"
+  else
+    printf "%bERROR:  %b Failed to set INTERFACE by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_INTERFACE}" ]]; then
     if _INTERFACE=$(route | grep '^default' | grep -o '[^ ]*$'); then
       printf "%bINFO:   %b INTERFACE was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_INTERFACE}"
@@ -243,6 +278,13 @@ elif [[ -n "${HOST_IP}" ]]; then
     printf "%bERROR:  %b Failed to set HOST_IP by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_HOST_IP}" ]]; then
+  if _HOST_IP="${_ENV_HOST_IP}"; then
+    printf "%bINFO:   %b HOST_IP set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_HOST_IP}"
+  else
+    printf "%bERROR:  %b Failed to set HOST_IP by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_HOST_IP}" ]]; then
     if _HOST_IP=$(ifconfig "${_INTERFACE}" | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'); then
       printf "%bINFO:   %b HOST_IP was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_HOST_IP}"
@@ -270,6 +312,13 @@ elif [[ -n "${HOST_NAME}" ]]; then
     printf "%bERROR:  %b Failed to set HOST_NAME by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_HOST_NAME}" ]]; then
+  if _HOST_NAME="${_ENV_HOST_NAME}"; then
+    printf "%bINFO:   %b HOST_NAME set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_HOST_NAME}"
+  else
+    printf "%bERROR:  %b Failed to set HOST_NAME by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_HOST_NAME}" ]]; then
     if _HOST_NAME=$(hostname); then
       printf "%bINFO:   %b HOST_NAME was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_HOST_NAME}"
@@ -296,6 +345,13 @@ elif [[ -n "${TIMEZONE}" ]]; then
     printf "%bERROR:  %b Failed to set TIMEZONE by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_TIMEZONE}" ]]; then
+  if _TIMEZONE="${_ENV_TIMEZONE}"; then
+    printf "%bINFO:   %b TIMEZONE set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_TIMEZONE}"
+  else
+    printf "%bERROR:  %b Failed to set TIMEZONE by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_TIMEZONE}" ]]; then
     if _TIMEZONE=$(timedatectl | grep 'Time zone' | awk '{print $3}'); then
       printf "%bINFO:   %b TIMEZONE was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_TIMEZONE}"
@@ -322,6 +378,13 @@ elif [[ -n "${DOMAIN}" ]]; then
     printf "%bERROR:  %b Failed to set DOMAIN by .env file.\n" "${RED}" "${BLANK}"
     exit_err
   fi
+elif [[ -n "${_ENV_DOMAIN}" ]]; then
+  if _DOMAIN="${_ENV_DOMAIN}"; then
+    printf "%bINFO:   %b DOMAIN set by Environment Variable to '%s'.\n" "${CYAN}" "${BLANK}" "${_DOMAIN}"
+  else
+    printf "%bERROR:  %b Failed to set DOMAIN by Environment Variable.\n" "${RED}" "${BLANK}"
+    exit_err
+  fi
   if [[ -n "${_DOMAIN}" ]]; then
     if _DOMAIN="${_HOST_NAME}.dns"; then
       printf "%bINFO:   %b DOMAIN was determined and set to '%s'.\n" "${CYAN}" "${BLANK}" "${_DOMAIN}"