TplLogEntry/TplLogEntryText: added several fields/props

pending_msg_id: the entry's pending msd_id or -1 if sent/ack'd
channel_path: the channel path relative to the channel originating the entry

log_id: changed type, from guint to (gchar *), to represent a literal token,
thus the constructor for TplLogEntry changed to follow the log_id type change.
Due to the type change, a small amend has been done on TplLogStoreEmapthy.

TplLogStoreDefault has been created since with the introduction of log_id as a
literal token, TplLogStoreEmpathy won't be compatible anymore with the current TPL default LS.

A utility function has been added to util.c, returning a message_token which
TPL clients can trust to be unique within TPL, this until Bug#26838 will be solved.

TplLogManager has been updated with the new TPL_LOG_STORE_DEFAULT instance.
TpLChannelText has been updated with the TplLogStoreText constructor update.

1 files changed, 44 insertions, 0 deletions

diff --git a/telepathy-logger/util.c b/telepathy-logger/util.c
new file mode 100644
index 0000000..8193369
--- /dev/null
+++ b/telepathy-logger/util.c
@@ -0,0 +1,44 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2009 Collabora Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Authors: Cosimo Alfarano <cosimo.alfarano@collabora.co.uk>
+ */
+
+#include "util.h"
+
+/* Bug#26838 prevents us to trust Messages' iface message-token
+ * header, so I need to create a token which TPL can trust to be unique
+ * within itself */
+gchar *
+create_message_token (const gchar *channel,
+    const gchar *date,
+    guint msgid)
+{
+  GChecksum *log_id = g_checksum_new (G_CHECKSUM_SHA1);
+  gchar *retval;
+
+  g_checksum_update (log_id, (guchar *) channel, -1);
+  g_checksum_update (log_id, (guchar *) date, -1);
+  g_checksum_update (log_id, (guchar *) &msgid, sizeof (unsigned int));
+
+  retval = g_strdup (g_checksum_get_string (log_id));
+
+  g_checksum_free (log_id);
+
+  return retval;
+}