From cd219a45dd64d7d6916656e5e1b3a4ead68974c2 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 18 Dec 2015 05:42:05 -0500
Subject: [PATCH] Fix regression where some message attachments could be missing on edit/forward (#1490608)

---
 program/steps/mail/func.inc |   47 +++++++++++++++++++++++++++++++----------------
 1 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index e7b6940..5436368 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -78,11 +78,12 @@
     // set current mailbox and some other vars in client environment
     $OUTPUT->set_env('mailbox', $mbox_name);
     $OUTPUT->set_env('pagesize', $RCMAIL->storage->get_pagesize());
+    $OUTPUT->set_env('current_page', max(1, $_SESSION['page']));
     $OUTPUT->set_env('delimiter', $delimiter);
     $OUTPUT->set_env('threading', $threading);
     $OUTPUT->set_env('threads', $threading || $RCMAIL->storage->get_capability('THREAD'));
     $OUTPUT->set_env('reply_all_mode', (int) $RCMAIL->config->get('reply_all_mode'));
-    $OUTPUT->set_env('preview_pane_mark_read', $RCMAIL->config->get('preview_pane_mark_read', 0));
+    $OUTPUT->set_env('preview_pane_mark_read', (int) $RCMAIL->config->get('preview_pane_mark_read'));
 
     if ($RCMAIL->storage->get_capability('QUOTA')) {
         $OUTPUT->set_env('quota', true);
@@ -163,9 +164,11 @@
         $mbox = strlen($_SESSION['mbox']) ? $_SESSION['mbox'] : 'INBOX';
     }
 
-    if ($RCMAIL->action == 'list') {
+    // we handle 'page' argument on 'list' and 'getunread' to prevent from
+    // race condition and unintentional page overwrite in session
+    if ($RCMAIL->action == 'list' || $RCMAIL->action == 'getunread') {
         if (!($page = intval($_GET['_page']))) {
-            $page = $_SESSION['page'] ? $_SESSION['page'] : 1;
+            $page = $_SESSION['page'] ?: 1;
         }
 
         $_SESSION['page'] = $page;
@@ -176,7 +179,7 @@
 
     // set default sort col/order to session
     if (!isset($_SESSION['sort_col'])) {
-        $_SESSION['sort_col'] = $message_sort_col ? $message_sort_col : '';
+        $_SESSION['sort_col'] = $message_sort_col ?: '';
     }
     if (!isset($_SESSION['sort_order'])) {
         $_SESSION['sort_order'] = strtoupper($message_sort_order) == 'ASC' ? 'ASC' : 'DESC';
@@ -1230,15 +1233,6 @@
                 // fetch part body
                 $body = $MESSAGE->get_part_body($part->mime_id, true);
 
-                // extract headers from message/rfc822 parts
-                if ($part->mimetype == 'message/rfc822') {
-                    $msgpart = rcube_mime::parse_message($body);
-                    if (!empty($msgpart->headers)) {
-                        $part = $msgpart;
-                        $out .= html::div('message-partheaders', rcmail_message_headers(sizeof($header_attrib) ? $header_attrib : null, $part->headers));
-                    }
-                }
-
                 // message is cached but not exists (#1485443), or other error
                 if ($body === false) {
                     rcmail_message_error($MESSAGE->uid);
@@ -1631,7 +1625,7 @@
                     $content = rcube::Q($name ? sprintf('%s <%s>', $name, $mailto) : $mailto);
                 }
                 else {
-                    $content = rcube::Q($name ? $name : $mailto);
+                    $content = rcube::Q($name ?: $mailto);
                     $attrs['title'] = $mailto;
                 }
 
@@ -1639,7 +1633,7 @@
             }
             else {
                 $address = html::span(array('title' => $mailto, 'class' => "rcmContactAddress"),
-                    rcube::Q($name ? $name : $mailto));
+                    rcube::Q($name ?: $mailto));
             }
 
             if ($addicon && $_SESSION['writeable_abook']) {
@@ -2209,6 +2203,8 @@
 
 function rcmail_save_attachment($message, $pid, $compose_id, $params = array())
 {
+    global $COMPOSE;
+
     $rcmail  = rcmail::get_instance();
     $storage = $rcmail->get_storage();
 
@@ -2271,7 +2267,26 @@
 
     if ($attachment['status']) {
         unset($attachment['data'], $attachment['status'], $attachment['content_id'], $attachment['abort']);
-        $rcmail->session->append('compose_data_' . $compose_id . '.attachments', $attachment['id'], $attachment);
+
+        $session_key = 'compose_data_' . $compose_id;
+
+        // rcube_session::append() replaces current session data with the old values
+        // (in rcube_session::reload()). This is a problem in 'compose' action, because before
+        // the first append() use we set some important data in the session.
+        // It also overwrites attachments list. Fixing reload() is not so simple if possible
+        // as we don't really know what has been added and what removed in meantime.
+        // So, for now we'll do not use append() on 'compose' action (#1490608).
+
+        if ($rcmail->action == 'compose') {
+            $_SESSION[$session_key]['attachments'][$attachment['id']] = $attachment;
+        }
+        else {
+            $rcmail->session->append($session_key . '.attachments', $attachment['id'], $attachment);
+        }
+
+        // Fix reference to compose session data after rcube_session::append()
+        $COMPOSE =& $_SESSION[$session_key];
+
         return $attachment;
     }
     else if ($path) {

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