[Web] Allow to overwrite DKIM keys while importing a new key

data/web/inc/functions.dkim.inc.php

@@ -50,10 +50,10 @@ function dkim($_action, $_data = null, $privkey = false) {
         if ($keypair_ressource = openssl_pkey_new($config)) {
           $key_details = openssl_pkey_get_details($keypair_ressource);
           $pubKey = implode(array_slice(
-              array_filter(
-                explode(PHP_EOL, $key_details['key'])
-              ), 1, -1)
-            );
+            array_filter(
+              explode(PHP_EOL, $key_details['key'])
+            ), 1, -1)
+          );
           // Save public key and selector to redis
           try {
             $redis->hSet('DKIM_PUB_KEYS', $domain, $pubKey);
@@ -150,6 +150,7 @@ function dkim($_action, $_data = null, $privkey = false) {
         return false;
       }
       $private_key_input = trim($_data['private_key_file']);
+      $overwrite_existing = intval($_data['overwrite_existing']);
       $private_key_normalized = preg_replace('~\r\n?~', "\n", $private_key_input);
       $private_key = openssl_pkey_get_private($private_key_normalized);
       if ($ssl_error = openssl_error_string()) {
@@ -178,12 +179,14 @@ function dkim($_action, $_data = null, $privkey = false) {
         return false;
       }
       if ($redis->hGet('DKIM_PUB_KEYS', $domain)) {
-        $_SESSION['return'][] = array(
-          'type' => 'danger',
-          'log' => array(__FUNCTION__, $_action, $_data, $privkey),
-          'msg' => array('dkim_domain_or_sel_invalid', $domain)
-        );
-        return false;
+        if ($overwrite_existing == 0) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data, $privkey),
+            'msg' => array('dkim_domain_or_sel_exists', $domain)
+          );
+          return false;
+        }
       }
       if (!ctype_alnum($dkim_selector)) {
         $_SESSION['return'][] = array(
@@ -194,6 +197,7 @@ function dkim($_action, $_data = null, $privkey = false) {
         return false;
       }
       try {
+        dkim('delete', $domain);
         $redis->hSet('DKIM_PUB_KEYS', $domain, $pem_public_key);
         $redis->hSet('DKIM_SELECTORS', $domain, $dkim_selector);
         $redis->hSet('DKIM_PRIV_KEYS', $dkim_selector . '.' . $domain, $private_key_normalized);