From c20fa4a1ad57a6fa013c7c9ddba72c6c3aafe345 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Tue, 15 Oct 2013 12:49:14 -0400
Subject: [PATCH] Fix address matching in Return-Path header on identity selection (#1489374)

---
 CHANGELOG                   |    1 +
 tests/MailFunc.php          |   36 ++++++++++++++++++++++++++++++++++++
 program/steps/mail/func.inc |   10 +++++++---
 3 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index b6c20e0..194067b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix address matching in Return-Path header on identity selection (#1489374)
 - Fix HTML part detection when encapsulated inside multipart/signed (#1489372)
 - Fix text wrapping issue with long unwrappable lines (#1489371)
 - Add spellchecker backend for the After the Deadline service
diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index 48afecb..70441e0 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -1813,15 +1813,19 @@
 
     // Try Return-Path
     if ($from_idx === null && ($return_path = $MESSAGE->headers->others['return-path'])) {
+        $return_path = array_map('strtolower', (array) $return_path);
+
         foreach ($identities as $idx => $ident) {
             // Return-Path header contains an email address, but on some mailing list
             // it can be e.g. <pear-dev-return-55250-local=domain.tld@lists.php.net>
             // where local@domain.tld is the address we're looking for (#1489241)
-            $ident1 = $ident['email_ascii'];
+            $ident1 = strtolower($ident['email_ascii']);
             $ident2 = str_replace('@', '=', $ident1);
+            $ident1 = '<' . $ident1 . '>';
+            $ident2 = '-' . $ident2 . '@';
 
-            foreach ((array)$return_path as $path) {
-                if (stripos($path, $ident1) !== false || stripos($path, $ident2)) {
+            foreach ($return_path as $path) {
+                if ($path == $ident1 || stripos($path, $ident2)) {
                     $from_idx = $idx;
                     break 2;
                 }
diff --git a/tests/MailFunc.php b/tests/MailFunc.php
index 32304f3..08cbd4e 100644
--- a/tests/MailFunc.php
+++ b/tests/MailFunc.php
@@ -181,4 +181,40 @@
         $this->assertRegExp('|src="cid:theCID"|', $html, "URI base resolving exception [1]");
         $this->assertRegExp('|src="http://other\.domain\.tld/img3\.gif"|', $html, "URI base resolving exception [2]");
     }
+
+    /**
+     * Test identities selection using Return-Path header
+     */
+    function test_rcmail_identity_select()
+    {
+        $identities = array(
+            array(
+                'name' => 'Test',
+                'email_ascii' => 'addr@domain.tld',
+                'ident' => 'Test <addr@domain.tld>',
+            ),
+            array(
+                'name' => 'Test',
+                'email_ascii' => 'thing@domain.tld',
+                'ident' => 'Test <thing@domain.tld>',
+            ),
+            array(
+                'name' => 'Test',
+                'email_ascii' => 'other@domain.tld',
+                'ident' => 'Test <other@domain.tld>',
+            ),
+        );
+
+        $message = new stdClass;
+        $message->headers = new rcube_message_header;
+        $message->headers->set('Return-Path', '<some_thing@domain.tld>');
+        $res = rcmail_identity_select($message, $identities);
+
+        $this->assertSame($identities[0], $res);
+
+        $message->headers->set('Return-Path', '<thing@domain.tld>');
+        $res = rcmail_identity_select($message, $identities);
+
+        $this->assertSame($identities[1], $res);
+    }
 }

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