Feature: Add config.php offline_mode. Fixes #3462

Add option to disable server-side Internet lookups. Timeouts on
servers with restricted Internet results in long page load times.

app/admin/customers/edit-submit.php

@@ -101,8 +101,10 @@ if($latlng['lat']!=NULL && $latlng['lng']!=NULL) {
     $values['long'] = $latlng['lng'];
 }
 else {
+	if (!Config::ValueOf('offline_mode')) {
 		$Result->show("warning", _('Failed to update location lat/lng from Nominatim').".<br>".escape_input($latlng['error']), false);
 	}
+}
 
 // update customer
 if(!$Admin->object_modify("customers", $customer['action'], "id", $values))	{}

app/admin/locations/edit-result.php

@@ -58,11 +58,13 @@ if($_POST['action']=="add" || $_POST['action']=="edit") {
                 $_POST['long'] = $latlng['lng'];
             }
             else {
+                if (!Config::ValueOf('offline_mode')) {
                     $Result->show("warning", _("Failed to update location lat/lng from Nominatim").".<br>".escape_input($latlng['error']), false);
                 }
             }
         }
     }
+}
 
 # fetch custom fields
 $custom = $Tools->fetch_custom_fields('locations');

config.dist.php

@@ -147,6 +147,8 @@ $proxy_user     = 'USERNAME';                             // Proxy Username
 $proxy_pass     = 'PASSWORD';                             // Proxy Password
 $proxy_use_auth = false;                                  // Enable/Disable Proxy authentication
 
+$offline_mode   = false;                                  // Offline mode, disable server-side Internet requests (proxy/OpenStreetMap)
+
 /**
  * Failed access
  * Message to log into webserver logs in case of failed access, for further processing by tools like Fail2Ban

config.docker.php

@@ -58,6 +58,8 @@ $proxy_user     = file_env('PROXY_USER',     $proxy_user);
 $proxy_pass     = file_env('PROXY_PASS',     $proxy_pass);
 $proxy_use_auth = file_env('PROXY_USE_AUTH', $proxy_use_auth);
 
+$offline_mode   = filter_var(file_env('OFFLINE_MODE', $offline_mode), FILTER_VALIDATE_BOOLEAN);
+
 /**
  * php debugging on/off
  *

functions/classes/class.Common.php

@@ -1419,6 +1419,11 @@ class Common_functions  {
 	public function curl_fetch_url($url, $headers=false, $timeout=30) {
 		$result = ['result'=>false, 'result_code'=>503, 'error_msg'=>''];
 
+		if (Config::ValueOf('offline_mode')) {
+			$result['error_msg'] = _('Internet access disabled in config.php');
+			return $result;
+		}
+
 		try {
 			$curl = curl_init();
 			curl_setopt($curl, CURLOPT_URL, $url);

functions/classes/class.OpenStreetMap.php

@@ -320,6 +320,11 @@ class OpenStreetMap extends Common_functions {
             return $results;
         }
 
+		if (Config::ValueOf('offline_mode')) {
+			$result['error'] = _('Internet access disabled in config.php');
+			return $result;
+		}
+
         try {
             // Obtain exclusive MySQL row lock
             $Lock = new LockForUpdate($this->Database, 'nominatim', 1);

misc/CHANGELOG

@@ -10,6 +10,7 @@
     + Added subnet free space map for each possible subnet mask;
     + Added Vaults (Certificate andf password storing);
     + Added Tools->Duplicate subnets & IP page;
+    + Added config.php offline_mode to disable server-side Internet lookups (#3462);
 
     Enhancements, changes:
     ----------------------------