res_pjsip_exten_state: Presence for digium phones

Added presence support for digium phones.

Review: https://reviewboard.asterisk.org/r/3239/
........

Merged revisions 408882 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@408883 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 113 insertions, 0 deletions

diff --git a/res/res_pjsip_pidf_digium_body_supplement.c b/res/res_pjsip_pidf_digium_body_supplement.c
new file mode 100644
index 000000000..d1b2c6b56
--- /dev/null
+++ b/res/res_pjsip_pidf_digium_body_supplement.c
@@ -0,0 +1,113 @@
+/*
+ * asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2014, Digium, Inc.
+ *
+ * Kevin Harwell <kharwell@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*** MODULEINFO
+	<depend>pjproject</depend>
+	<depend>res_pjsip</depend>
+	<depend>res_pjsip_pubsub</depend>
+	<support_level>core</support_level>
+ ***/
+
+#include "asterisk.h"
+
+#include <pjsip.h>
+#include <pjsip_simple.h>
+#include <pjlib.h>
+
+#include "asterisk/module.h"
+#include "asterisk/presencestate.h"
+#include "asterisk/res_pjsip.h"
+#include "asterisk/res_pjsip_pubsub.h"
+#include "asterisk/res_pjsip_presence_xml.h"
+#include "asterisk/res_pjsip_body_generator_types.h"
+
+static int pidf_supplement_body(void *body, void *data)
+{
+	struct ast_sip_exten_state_data *state_data = data;
+	pj_xml_node *node;
+
+	if (ast_strlen_zero(state_data->user_agent) ||
+	    !strstr(state_data->user_agent, "digium")) {
+		/* not a digium phone */
+		return 0;
+	}
+
+	if (!(node = ast_sip_presence_xml_create_node(
+		      state_data->pool, body, "tuple"))) {
+		ast_log(LOG_WARNING, "Unable to create PIDF tuple\n");
+		return -1;
+	}
+
+	ast_sip_presence_xml_create_attr(
+		state_data->pool, node, "id", "digium-presence");
+
+	if (!(node = ast_sip_presence_xml_create_node(
+		      state_data->pool, node, "status"))) {
+		ast_log(LOG_WARNING, "Unable to create PIDF tuple status\n");
+		return -1;
+	}
+
+	if (!(node = ast_sip_presence_xml_create_node(
+		      state_data->pool, node, "digium_presence"))) {
+		ast_log(LOG_WARNING, "Unable to create digium presence\n");
+		return -1;
+	}
+
+	if (!ast_strlen_zero(state_data->presence_message)) {
+			pj_strdup2(state_data->pool, &node->content,
+				   state_data->presence_message);
+	}
+
+	ast_sip_presence_xml_create_attr(
+		state_data->pool, node, "type", ast_presence_state2str(
+			state_data->presence_state));
+
+	if (!ast_strlen_zero(state_data->presence_subtype)) {
+		ast_sip_presence_xml_create_attr(
+			state_data->pool, node, "subtype",
+			state_data->presence_subtype);
+	}
+
+	return 0;
+}
+
+static struct ast_sip_pubsub_body_supplement pidf_supplement = {
+	.type = "application",
+	.subtype = "pidf+xml",
+	.supplement_body = pidf_supplement_body,
+};
+
+static int load_module(void)
+{
+	if (ast_sip_pubsub_register_body_supplement(&pidf_supplement)) {
+		return AST_MODULE_LOAD_DECLINE;
+	}
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+static int unload_module(void)
+{
+	ast_sip_pubsub_unregister_body_supplement(&pidf_supplement);
+	return 0;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP PIDF Digium presence supplement",
+		.load = load_module,
+		.unload = unload_module,
+		.load_pri = AST_MODPRI_CHANNEL_DEPEND,
+);