Replace the common pattern of hunting for .ini

* It's a little much to type and fix
* Moved to a static helper
* Start with the most likely to overwrite otherwise we were sometimes
parsing three files

www/home.php

@@ -41,25 +41,10 @@
     $url = htmlspecialchars($req_url);
 }
 $placeholder = 'Enter a website URL...';
-$profile_file = SETTINGS_PATH . '/profiles.ini';
-if (file_exists(SETTINGS_PATH . '/common/profiles.ini')) {
-    $profile_file = SETTINGS_PATH . '/common/profiles.ini';
-}
-if (file_exists(SETTINGS_PATH . '/server/profiles.ini')) {
-    $profile_file = SETTINGS_PATH . '/server/profiles.ini';
-}
-$profiles = parse_ini_file($profile_file, true);
-$connectivity_file = SETTINGS_PATH . '/connectivity.ini.sample';
-if (file_exists(SETTINGS_PATH . '/connectivity.ini')) {
-    $connectivity_file = SETTINGS_PATH . '/connectivity.ini';
-}
-if (file_exists(SETTINGS_PATH . '/common/connectivity.ini')) {
-    $connectivity_file = SETTINGS_PATH . '/common/connectivity.ini';
-}
-if (file_exists(SETTINGS_PATH . '/server/connectivity.ini')) {
-    $connectivity_file = SETTINGS_PATH . '/server/connectivity.ini';
-}
-$connectivity = parse_ini_file($connectivity_file, true);
+
+$profiles = IniReader::parse('profiles.ini', true);
+$connectivity = IniReader::parse('connectivity.ini', true, true);
+
 $mobile_devices = LoadMobileDevices();
 
 if (isset($_REQUEST['connection']) && isset($connectivity[$_REQUEST['connection']])) {

www/src/Util/IniReader.php

@@ -14,4 +14,30 @@ public static function getExtensions(): array
         }
         return [];
     }
+    /**
+     * Return a parsed ini file by looking ar the default (even a sample) location
+     * and any overwrites in /common and /server
+     *
+     * @param string $filename E.g. "locations.ini"
+     * @param bool $processSections Same as the second param to `parse_ini_file`
+     * @param bool $allowSample If true also look for e.g. "locations.ini.sample"
+     * @return array|null Parsed ini or null
+     */
+    public static function parse($filename, $processSections = false, $allowSample = false) {
+        $paths = [
+            realpath(SETTINGS_PATH . '/server/' . $filename),
+            realpath(SETTINGS_PATH . '/common/' . $filename),
+            realpath(SETTINGS_PATH . '/' . $filename),
+        ];
+        if ($allowSample) {
+            $paths[] = realpath(SETTINGS_PATH . '/' . $filename . '.sample');
+        }
+
+        foreach ($paths as $path) {
+            if ($path && file_exists($path)) {
+                return parse_ini_file($path, $processSections);
+            }
+        }
+        return null;
+    }
 }