From 73ad9430e890d0fc44cf84955c42603a00b51550 Mon Sep 17 00:00:00 2001
From: Kevin Harwell <kharwell@digium.com>
Date: Tue, 25 Feb 2014 17:51:51 +0000
Subject: [PATCH] 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
---
.../asterisk/res_pjsip_body_generator_types.h | 6 +
res/res_pjsip_exten_state.c | 40 ++++++-
res/res_pjsip_pidf_digium_body_supplement.c | 113 ++++++++++++++++++
3 files changed, 157 insertions(+), 2 deletions(-)
create mode 100644 res/res_pjsip_pidf_digium_body_supplement.c
diff --git a/include/asterisk/res_pjsip_body_generator_types.h b/include/asterisk/res_pjsip_body_generator_types.h
index f27e8968a1..09f234a039 100644
--- a/include/asterisk/res_pjsip_body_generator_types.h
+++ b/include/asterisk/res_pjsip_body_generator_types.h
@@ -36,6 +36,12 @@ struct ast_sip_exten_state_data {
enum ast_extension_states exten_state;
/*! The presence state of the change */
enum ast_presence_state presence_state;
+ /*! The presence subtype of the change */
+ char *presence_subtype;
+ /*! The presence message of the change */
+ char *presence_message;
+ /*! Subscriber user agent */
+ char *user_agent;
/*! Current device state information */
struct ao2_container *device_state_info;
/*! Local dialog URI */
diff --git a/res/res_pjsip_exten_state.c b/res/res_pjsip_exten_state.c
index de3c0bfda9..7742de4250 100644
--- a/res/res_pjsip_exten_state.c
+++ b/res/res_pjsip_exten_state.c
@@ -57,8 +57,12 @@ struct exten_state_subscription {
char context[AST_MAX_CONTEXT];
/*! Extension within the context to receive updates from */
char exten[AST_MAX_EXTENSION];
+ /*! The subscription's user agent */
+ char *user_agent;
/*! The last known extension state */
enum ast_extension_states last_exten_state;
+ /*! The last known presence state */
+ enum ast_presence_state last_presence_state;
};
#define DEFAULT_PRESENCE_BODY "application/pidf+xml"
@@ -90,9 +94,29 @@ static void exten_state_subscription_destructor(void *obj)
{
struct exten_state_subscription *sub = obj;
+ ast_free(sub->user_agent);
ao2_cleanup(sub->sip_sub);
}
+static char *get_user_agent(pjsip_rx_data *rdata)
+{
+ static const pj_str_t USER_AGENT = { "User-Agent", 10 };
+
+ size_t size;
+ char *user_agent = NULL;
+ pjsip_user_agent_hdr *user_agent_hdr = pjsip_msg_find_hdr_by_name(
+ rdata->msg_info.msg, &USER_AGENT, NULL);
+
+ if (!user_agent_hdr) {
+ return NULL;
+ }
+
+ size = pj_strlen(&user_agent_hdr->hvalue) + 1;
+ user_agent = ast_malloc(size);
+ ast_copy_pj_str(user_agent, &user_agent_hdr->hvalue, size);
+ return ast_str_to_lower(user_agent);
+}
+
/*!
* \internal
* \brief Initialize the last extension state to something outside
@@ -125,7 +149,8 @@ static struct exten_state_subscription *exten_state_subscription_alloc(
}
exten_state_sub->last_exten_state = INITIAL_LAST_EXTEN_STATE;
-
+ exten_state_sub->last_presence_state = AST_PRESENCE_NOT_SET;
+ exten_state_sub->user_agent = get_user_agent(rdata);
ao2_ref(exten_state_sub, +1);
return exten_state_sub;
}
@@ -190,6 +215,9 @@ static void send_notify(struct exten_state_subscription *exten_state_sub, const
.exten = exten_state_sub->exten,
.presence_state = ast_hint_presence_state(NULL, exten_state_sub->context,
exten_state_sub->exten, &subtype, &message),
+ .presence_subtype = subtype,
+ .presence_message = message,
+ .user_agent = exten_state_sub->user_agent
};
dlg = ast_sip_subscription_get_dlg(exten_state_sub->sip_sub);
@@ -226,6 +254,9 @@ static void notify_task_data_destructor(void *obj)
ao2_ref(task_data->exten_state_sub, -1);
ao2_cleanup(task_data->exten_state_data.device_state_info);
+ ast_free(task_data->exten_state_data.presence_subtype);
+ ast_free(task_data->exten_state_data.presence_message);
+ ast_free(task_data->exten_state_data.user_agent);
}
static struct notify_task_data *alloc_notify_task_data(char *exten, struct exten_state_subscription *exten_state_sub,
@@ -243,11 +274,15 @@ static struct notify_task_data *alloc_notify_task_data(char *exten, struct exten
task_data->evsub_state = PJSIP_EVSUB_STATE_ACTIVE;
task_data->exten_state_sub = exten_state_sub;
task_data->exten_state_sub->last_exten_state = info->exten_state;
+ task_data->exten_state_sub->last_presence_state = info->presence_state;
ao2_ref(task_data->exten_state_sub, +1);
task_data->exten_state_data.exten = exten_state_sub->exten;
task_data->exten_state_data.exten_state = info->exten_state;
task_data->exten_state_data.presence_state = info->presence_state;
+ task_data->exten_state_data.presence_subtype = ast_strdup(info->presence_subtype);
+ task_data->exten_state_data.presence_message = ast_strdup(info->presence_message);
+ task_data->exten_state_data.user_agent = ast_strdup(exten_state_sub->user_agent);
task_data->exten_state_data.device_state_info = info->device_state_info;
if (task_data->exten_state_data.device_state_info) {
@@ -299,7 +334,8 @@ static int state_changed(char *context, char *exten,
struct notify_task_data *task_data;
struct exten_state_subscription *exten_state_sub = data;
- if (exten_state_sub->last_exten_state == info->exten_state) {
+ if (exten_state_sub->last_exten_state == info->exten_state &&
+ exten_state_sub->last_presence_state == info->presence_state) {
return 0;
}
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 0000000000..d1b2c6b56f
--- /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,
+);
--
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