[evolution-data-server] [IMAPx] Prevent deadlock under camel_imapx_server_copy_message_sync()

[Milan Crha <mcrha src gnome org>]

commit 3395a92426898dfca4b3ade1b326ab55ec42dba1
Author: Milan Crha <mcrha redhat com>
Date:   Fri Oct 27 14:28:27 2017 +0200

    [IMAPx] Prevent deadlock under camel_imapx_server_copy_message_sync()
    
    There could happen a deadlock when the source_info had been locked, thus
    instead of saving memory, prevent the deadlock by properties copy.

 src/camel/providers/imapx/camel-imapx-server.c |   34 ++++++++++++++++-------
 1 files changed, 23 insertions(+), 11 deletions(-)
---
diff --git a/src/camel/providers/imapx/camel-imapx-server.c b/src/camel/providers/imapx/camel-imapx-server.c
index 2995d68..c1ef70d 100644
--- a/src/camel/providers/imapx/camel-imapx-server.c
+++ b/src/camel/providers/imapx/camel-imapx-server.c
@@ -4390,15 +4390,22 @@ camel_imapx_server_copy_message_sync (CamelIMAPXServer *is,
 
                                destination_folder = imapx_server_ref_folder (is, destination);
                                if (destination_folder) {
+                                       CamelFolderSummary *destination_summary;
                                        CamelMessageInfo *source_info, *destination_info;
                                        CamelFolderChangeInfo *changes;
                                        gint ii;
 
+                                       destination_summary = camel_folder_get_folder_summary 
(destination_folder);
+                                       camel_folder_summary_lock (destination_summary);
+
                                        changes = camel_folder_change_info_new ();
 
                                        for (ii = 0; ii < copyuid_status->u.copyuid.uids->len; ii++) {
                                                gchar *uid;
                                                gboolean is_new = FALSE;
+                                               guint32 source_flags;
+                                               CamelNamedFlags *source_user_flags;
+                                               CamelNameValueArray *source_user_tags;
 
                                                uid = g_strdup_printf ("%u", g_array_index 
(copyuid_status->u.copyuid.uids, guint32, ii));
                                                source_info = g_hash_table_lookup (source_infos, uid);
@@ -4408,44 +4415,49 @@ camel_imapx_server_copy_message_sync (CamelIMAPXServer *is,
                                                        continue;
 
                                                uid = g_strdup_printf ("%u", g_array_index 
(copyuid_status->u.copyuid.copied_uids, guint32, ii));
-                                               destination_info = camel_folder_summary_get 
(camel_folder_get_folder_summary (folder), uid);
+                                               destination_info = camel_folder_summary_get 
(destination_summary, uid);
 
                                                if (!destination_info) {
                                                        is_new = TRUE;
-                                                       destination_info = camel_message_info_clone 
(source_info, camel_folder_get_folder_summary (destination_folder));
+                                                       destination_info = camel_message_info_clone 
(source_info, destination_summary);
                                                        camel_message_info_set_uid (destination_info, uid);
                                                }
 
                                                g_free (uid);
 
-                                               camel_message_info_property_lock (source_info);
+                                               source_flags = camel_message_info_get_flags (source_info);
+                                               source_user_flags = camel_message_info_dup_user_flags 
(source_info);
+                                               source_user_tags = camel_message_info_dup_user_tags 
(source_info);
 
                                                imapx_set_message_info_flags_for_new_message (
                                                        destination_info,
-                                                       camel_message_info_get_flags (source_info),
-                                                       camel_message_info_get_user_flags (source_info),
+                                                       source_flags,
+                                                       source_user_flags,
                                                        TRUE,
-                                                       camel_message_info_get_user_tags (source_info),
+                                                       source_user_tags,
                                                        camel_imapx_mailbox_get_permanentflags (destination));
+
+                                               camel_named_flags_free (source_user_flags);
+                                               camel_name_value_array_free (source_user_tags);
+
                                                if (remove_deleted_flags)
                                                        camel_message_info_set_flags (destination_info, 
CAMEL_MESSAGE_DELETED, 0);
                                                if (remove_junk_flags)
                                                        camel_message_info_set_flags (destination_info, 
CAMEL_MESSAGE_JUNK, 0);
                                                if (is_new)
-                                                       camel_folder_summary_add 
(camel_folder_get_folder_summary (destination_folder), destination_info, FALSE);
+                                                       camel_folder_summary_add (destination_summary, 
destination_info, FALSE);
                                                camel_folder_change_info_add_uid (changes, 
camel_message_info_get_uid (destination_info));
 
-                                               camel_message_info_property_unlock (source_info);
-
                                                g_clear_object (&destination_info);
                                        }
 
                                        if (camel_folder_change_info_changed (changes)) {
-                                               camel_folder_summary_touch (camel_folder_get_folder_summary 
(destination_folder));
-                                               camel_folder_summary_save (camel_folder_get_folder_summary 
(destination_folder), NULL);
+                                               camel_folder_summary_touch (destination_summary);
+                                               camel_folder_summary_save (destination_summary, NULL);
                                                camel_folder_changed (destination_folder, changes);
                                        }
 
+                                       camel_folder_summary_unlock (destination_summary);
                                        camel_folder_change_info_free (changes);
                                        g_object_unref (destination_folder);
                                }