Merge pull request #122 from rollbrettler/master

Replace imap_rcube library with curl call

lib/imap.php

@@ -8,8 +8,6 @@
  * See the COPYING-README file.
  */
 
-use OCA\user_external\imap\imap_rcube;
-
 /**
  * User authentication against an IMAP mail server
  *
@@ -87,31 +85,30 @@ class OC_User_IMAP extends \OCA\user_external\Base {
 					$groups[] = $pieces[1];
 		}
 
-		$rcube = new imap_rcube();
+		$protocol = $this->sslmode ? "imaps" : "imap";
+		$url = "{$protocol}://{$this->mailbox}:{$this->port}";
+		$ch = curl_init();
+		curl_setopt($ch, CURLOPT_URL, $url);
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($ch, CURLOPT_USERPWD, $username.":".$password);
+		curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
 
-		$params = ["port"=>$this->port, "timeout"=>10];
-
-		$params["ssl_mode"] = $this->sslmode ? $this->sslmode : null;
-		$params["force_caps"] = false;
-		$canconnect = $rcube->connect(
-					$this->mailbox,
-					$username,
-					$password,
-					$params
-		);
+		$canconnect = curl_exec($ch);
 
 		if($canconnect) {
- 			$rcube->closeConnection();
+			curl_close($ch);
 			$uid = mb_strtolower($uid);
 			$this->storeUser($uid, $groups);
 			return $uid;
 		} else {
 			OC::$server->getLogger()->error(
-				'ERROR: Could not connect via roundcube lib: '.$rcube->error,
+				'ERROR: Could not connect to imap server via curl: '.curl_error($ch),
 				['app' => 'user_external']
 			);
 		}
 
+		curl_close($ch);
+
 		return false;
 	}
 }

lib/imap/imap_rcube.changes2upstream

@@ -1,24 +0,0 @@
-commit 97dc6583c41605beda7eced3ba05fc578cfd6111
-Author: Scott Shambarger <devel@shambarger.net>
-Date:   Wed May 29 20:07:18 2019 -0700
-
-    Fix Issue #56: Undefined Indices in Logs
-
-    Add ssl_mode and force_caps to connection params, and correctly handle
-    AUTHENTICATE PLAIN in putLineC to reduce warnings in logs.
-
-    Signed-off-by: Scott Shambarger <devel@shambarger.net>
-
-diff --git a/lib/imap/imap_rcube.php b/lib/imap/imap_rcube.php
-index f5b5b79..ceec1e5 100644
---- a/lib/imap/imap_rcube.php
-+++ b/lib/imap/imap_rcube.php
-@@ -146,7 +146,7 @@ class imap_rcube
-         $res = 0;
-         if ($parts = preg_split('/(\{[0-9]+\}\r\n)/m', $string, -1, PREG_SPLIT_DELIM_CAPTURE)) {
-             for ($i=0, $cnt=count($parts); $i<$cnt; $i++) {
--                if (preg_match('/^\{([0-9]+)\}\r\n$/', $parts[$i+1], $matches)) {
-+                if (isset($parts[$i+1]) && preg_match('/^\{([0-9]+)\}\r\n$/', $parts[$i+1], $matches)) {
-                     // LITERAL+ support
-                     if ($this->prefs['literal+']) {
-                         $parts[$i+1] = sprintf("{%d+}\r\n", $matches[1]);