The large GULP->PJSIP renaming effort.

The general gist is to have a clear boundary between old SIP stuff
and new SIP stuff by having the word "SIP" for old stuff and "PJSIP"
for new stuff. Here's a brief rundown of the changes:

* The word "Gulp" in dialstrings, functions, and CLI commands is now
  "PJSIP"
* chan_gulp.c is now chan_pjsip.c
* Function names in chan_gulp.c that were "gulp_*" are now "chan_pjsip_*"
* All files that were "res_sip*" are now "res_pjsip*"
* The "res_sip" directory is now "res_pjsip"
* Files in the "res_pjsip" directory that began with "sip_*" are now "pjsip_*"
* The configuration file is now "pjsip.conf" instead of "res_sip.conf"
* The module info for all PJSIP-related files now uses "PJSIP" instead of "SIP"
* CLI and AMI commands created by Asterisk's PJSIP modules now have "pjsip" as
the starting word instead of "sip"



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@395764 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 621 insertions, 0 deletions

diff --git a/res/res_pjsip_exten_state.c b/res/res_pjsip_exten_state.c
new file mode 100644
index 000000000..c921d4437
--- /dev/null
+++ b/res/res_pjsip_exten_state.c
@@ -0,0 +1,621 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2013, 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/res_pjsip.h"
+#include "asterisk/res_pjsip_pubsub.h"
+#include "asterisk/res_pjsip_exten_state.h"
+#include "asterisk/module.h"
+#include "asterisk/logger.h"
+#include "asterisk/astobj2.h"
+#include "asterisk/sorcery.h"
+#include "asterisk/app.h"
+
+#define BODY_SIZE 1024
+#define EVENT_TYPE_SIZE 50
+
+AST_RWLIST_HEAD_STATIC(providers, ast_sip_exten_state_provider);
+
+/*!
+ * \internal
+ * \brief Find a provider based on the given accept body type.
+ */
+static struct ast_sip_exten_state_provider *provider_by_type(const char *type)
+{
+	struct ast_sip_exten_state_provider *i;
+	SCOPED_LOCK(lock, &providers, AST_RWLIST_RDLOCK, AST_RWLIST_UNLOCK);
+	AST_RWLIST_TRAVERSE_SAFE_BEGIN(&providers, i, next) {
+		if (!strcmp(i->body_type, type)) {
+			return i;
+		}
+	}
+	AST_RWLIST_TRAVERSE_SAFE_END;
+	return NULL;
+}
+
+/*!
+ * \internal
+ * \brief Find a provider based on the given accept body types.
+ */
+static struct ast_sip_exten_state_provider *provider_by_types(const char *event_name,
+							      char **types, int count)
+{
+	int i;
+	struct ast_sip_exten_state_provider *res;
+	for (i = 0; i < count; ++i) {
+		if ((res = provider_by_type(types[i])) &&
+		    !strcmp(event_name, res->event_name)) {
+			return res;
+		}
+	}
+	return NULL;
+}
+
+/*!
+ * \brief A subscription for extension state
+ *
+ * This structure acts as the owner for the underlying SIP subscription. It
+ * also keeps a pointer to an associated "provider" so when a state changes
+ * a notify data creator is quickly accessible.
+ */
+struct exten_state_subscription {
+	/*! Watcher id when registering for extension state changes */
+	int id;
+	/*! The SIP subscription */
+	struct ast_sip_subscription *sip_sub;
+	/*! The name of the event the subscribed to */
+	char event_name[EVENT_TYPE_SIZE];
+	/*! The number of body types */
+	int body_types_count;
+	/*! The subscription body types */
+	char **body_types;
+	/*! Context in which subscription looks for updates */
+	char context[AST_MAX_CONTEXT];
+	/*! Extension within the context to receive updates from */
+	char exten[AST_MAX_EXTENSION];
+	/*! The last known extension state */
+	enum ast_extension_states last_exten_state;
+};
+
+static void exten_state_subscription_destructor(void *obj)
+{
+	struct exten_state_subscription *sub = obj;
+	int i;
+
+	for (i = 0; i < sub->body_types_count; ++i) {
+		ast_free(sub->body_types[i]);
+	}
+
+	ast_free(sub->body_types);
+	ao2_cleanup(sub->sip_sub);
+}
+
+/*!
+ * \internal
+ * \brief Copies the body types the message wishes to subscribe to.
+ */
+static void copy_body_types(pjsip_rx_data *rdata,
+			    struct exten_state_subscription *exten_state_sub)
+{
+	int i;
+	pjsip_accept_hdr *hdr = (pjsip_accept_hdr*)
+		pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_ACCEPT, NULL);
+
+	exten_state_sub->body_types_count = hdr->count;
+	exten_state_sub->body_types = ast_malloc(hdr->count * sizeof(char*));
+
+	for (i = 0; i < hdr->count; ++i) {
+		exten_state_sub->body_types[i] =
+			ast_malloc(hdr->values[i].slen * sizeof(char*) + 1);
+
+		ast_copy_string(exten_state_sub->body_types[i],
+				pj_strbuf(&hdr->values[i]), hdr->values[i].slen + 1);
+	}
+}
+
+/*!
+ * \internal
+ * \brief Initialize the last extension state to something outside
+ * its usual states.
+ */
+#define INITIAL_LAST_EXTEN_STATE -3
+
+/*!
+ * \internal
+ * \brief Allocates an exten_state_subscription object.
+ *
+ * Creates the underlying SIP subscription for the given request. First makes
+ * sure that there are registered handler and provider objects available.
+ */
+static struct exten_state_subscription *exten_state_subscription_alloc(
+	struct ast_sip_endpoint *endpoint, enum ast_sip_subscription_role role, pjsip_rx_data *rdata)
+{
+	static const pj_str_t event_name = { "Event", 5 };
+	pjsip_event_hdr *hdr = (pjsip_event_hdr*)pjsip_msg_find_hdr_by_name(
+		rdata->msg_info.msg, &event_name, NULL);
+
+	struct ast_sip_exten_state_provider *provider;
+	RAII_VAR(struct exten_state_subscription *, exten_state_sub,
+		 ao2_alloc(sizeof(*exten_state_sub), exten_state_subscription_destructor), ao2_cleanup);
+
+	if (!exten_state_sub) {
+		return NULL;
+	}
+
+	ast_copy_pj_str(exten_state_sub->event_name, &hdr->event_type,
+			sizeof(exten_state_sub->event_name));
+
+	copy_body_types(rdata, exten_state_sub);
+	if (!(provider = provider_by_types(exten_state_sub->event_name,
+					   exten_state_sub->body_types,
+					   exten_state_sub->body_types_count))) {
+		ast_log(LOG_WARNING, "Unable to locate subscription handler\n");
+		return NULL;
+	}
+
+	if (!(exten_state_sub->sip_sub = ast_sip_create_subscription(
+		      provider->handler, role, endpoint, rdata))) {
+		ast_log(LOG_WARNING, "Unable to create SIP subscription for endpoint %s\n",
+			ast_sorcery_object_get_id(endpoint));
+		return NULL;
+	}
+
+	exten_state_sub->last_exten_state = INITIAL_LAST_EXTEN_STATE;
+
+	ao2_ref(exten_state_sub, +1);
+	return exten_state_sub;
+}
+
+/*!
+ * \internal
+ * \brief Create and send a NOTIFY request to the subscriber.
+ */
+static void create_send_notify(struct exten_state_subscription *exten_state_sub, const char *reason,
+			       pjsip_evsub_state evsub_state, struct ast_sip_exten_state_data *exten_state_data)
+{
+	RAII_VAR(struct ast_str *, body_text, ast_str_create(BODY_SIZE), ast_free_ptr);
+	pj_str_t reason_str;
+	const pj_str_t *reason_str_ptr = NULL;
+	pjsip_tx_data *tdata;
+	pjsip_dialog *dlg;
+	char local[PJSIP_MAX_URL_SIZE], remote[PJSIP_MAX_URL_SIZE];
+	struct ast_sip_body body;
+
+	struct ast_sip_exten_state_provider *provider = provider_by_types(
+		exten_state_sub->event_name, exten_state_sub->body_types,
+		exten_state_sub->body_types_count);
+
+	if (!provider) {
+		ast_log(LOG_ERROR, "Unable to locate provider for subscription\n");
+		return;
+	}
+
+	body.type = provider->type;
+	body.subtype = provider->subtype;
+
+	dlg = ast_sip_subscription_get_dlg(exten_state_sub->sip_sub);
+	ast_copy_pj_str(local, &dlg->local.info_str, sizeof(local));
+	ast_copy_pj_str(remote, &dlg->remote.info_str, sizeof(remote));
+
+	if (provider->create_body(exten_state_data, local, remote, &body_text)) {
+		ast_log(LOG_ERROR, "Unable to create body on NOTIFY request\n");
+		return;
+	}
+
+	body.body_text = ast_str_buffer(body_text);
+
+	if (reason) {
+		pj_cstr(&reason_str, reason);
+		reason_str_ptr = &reason_str;
+	}
+
+	if (pjsip_evsub_notify(ast_sip_subscription_get_evsub(exten_state_sub->sip_sub),
+			      evsub_state, NULL, reason_str_ptr, &tdata) != PJ_SUCCESS) {
+		ast_log(LOG_WARNING, "Unable to create NOTIFY request\n");
+		return;
+	}
+
+	if (ast_sip_add_body(tdata, &body)) {
+		ast_log(LOG_WARNING, "Unable to add body to NOTIFY request\n");
+		pjsip_tx_data_dec_ref(tdata);
+		return;
+	}
+
+	if (ast_sip_subscription_send_request(exten_state_sub->sip_sub, tdata) != PJ_SUCCESS) {
+		ast_log(LOG_WARNING, "Unable to send NOTIFY request\n");
+		pjsip_tx_data_dec_ref(tdata);
+	}
+}
+
+/*!
+ * \internal
+ * \brief Get device state information and send notification to the subscriber.
+ */
+static void send_notify(struct exten_state_subscription *exten_state_sub, const char *reason,
+	pjsip_evsub_state evsub_state)
+{
+	RAII_VAR(struct ao2_container*, info, NULL, ao2_cleanup);
+	char *subtype = NULL, *message = NULL;
+
+	struct ast_sip_exten_state_data exten_state_data = {
+		.exten = exten_state_sub->exten,
+		.presence_state = ast_hint_presence_state(NULL, exten_state_sub->context,
+							  exten_state_sub->exten, &subtype, &message),
+	};
+
+	if ((exten_state_data.exten_state = ast_extension_state_extended(
+		     NULL, exten_state_sub->context, exten_state_sub->exten, &info)) < 0) {
+
+		ast_log(LOG_WARNING, "Unable to get device hint/info for extension %s\n",
+			exten_state_sub->exten);
+		return;
+	}
+
+	exten_state_data.device_state_info = info;
+	create_send_notify(exten_state_sub, reason, evsub_state, &exten_state_data);
+}
+
+struct notify_task_data {
+	struct ast_sip_exten_state_data exten_state_data;
+	struct exten_state_subscription *exten_state_sub;
+	pjsip_evsub_state evsub_state;
+};
+
+static void notify_task_data_destructor(void *obj)
+{
+	struct notify_task_data *task_data = obj;
+
+	ao2_ref(task_data->exten_state_sub, -1);
+	ao2_cleanup(task_data->exten_state_data.device_state_info);
+}
+
+static struct notify_task_data *alloc_notify_task_data(char *exten, struct exten_state_subscription *exten_state_sub,
+						       struct ast_state_cb_info *info)
+{
+	struct notify_task_data *task_data =
+		ao2_alloc(sizeof(*task_data), notify_task_data_destructor);
+
+	if (!task_data) {
+		ast_log(LOG_WARNING, "Unable to create notify task data\n");
+		return NULL;
+	}
+
+	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;
+	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.device_state_info = info->device_state_info;
+
+	if (task_data->exten_state_data.device_state_info) {
+		ao2_ref(task_data->exten_state_data.device_state_info, +1);
+	}
+
+	if ((info->exten_state == AST_EXTENSION_DEACTIVATED) ||
+	    (info->exten_state == AST_EXTENSION_REMOVED)) {
+		task_data->evsub_state = PJSIP_EVSUB_STATE_TERMINATED;
+		ast_log(LOG_WARNING, "Watcher for hint %s %s\n", exten, info->exten_state
+			 == AST_EXTENSION_REMOVED ? "removed" : "deactivated");
+	}
+
+	return task_data;
+}
+
+static int notify_task(void *obj)
+{
+	RAII_VAR(struct notify_task_data *, task_data, obj, ao2_cleanup);
+
+	create_send_notify(task_data->exten_state_sub, task_data->evsub_state ==
+			   PJSIP_EVSUB_STATE_TERMINATED ? "noresource" : NULL,
+			   task_data->evsub_state, &task_data->exten_state_data);
+	return 0;
+}
+
+/*!
+ * \internal
+ * \brief Callback for exten/device state changes.
+ *
+ * Upon state change, send the appropriate notification to the subscriber.
+ */
+static int state_changed(char *context, char *exten,
+			 struct ast_state_cb_info *info, void *data)
+{
+	struct notify_task_data *task_data;
+	struct exten_state_subscription *exten_state_sub = data;
+
+	if (exten_state_sub->last_exten_state == info->exten_state) {
+		return 0;
+	}
+
+	if (!(task_data = alloc_notify_task_data(exten, exten_state_sub, info))) {
+		return -1;
+	}
+
+	/* safe to push this async since we copy the data from info and
+	   add a ref for the device state info */
+	if (ast_sip_push_task(ast_sip_subscription_get_serializer(task_data->exten_state_sub->sip_sub),
+			      notify_task, task_data)) {
+		ao2_cleanup(task_data);
+		return -1;
+	}
+	return 0;
+}
+
+static void state_changed_destroy(int id, void *data)
+{
+	struct exten_state_subscription *exten_state_sub = data;
+	ao2_cleanup(exten_state_sub);
+}
+
+static struct ast_datastore_info ds_info = { };
+static const char ds_name[] = "exten state datastore";
+
+/*!
+ * \internal
+ * \brief Add a datastore for exten exten_state_subscription.
+ *
+ * Adds the exten_state_subscription wrapper object to a datastore so it can be retrieved
+ * later based upon its association with the ast_sip_subscription.
+ */
+static int add_datastore(struct exten_state_subscription *exten_state_sub)
+{
+	RAII_VAR(struct ast_datastore *, datastore,
+		 ast_sip_subscription_alloc_datastore(&ds_info, ds_name), ao2_cleanup);
+
+	if (!datastore) {
+		return -1;
+	}
+
+	datastore->data = exten_state_sub;
+	ast_sip_subscription_add_datastore(exten_state_sub->sip_sub, datastore);
+	ao2_ref(exten_state_sub, +1);
+	return 0;
+}
+
+/*!
+ * \internal
+ * \brief Get the exten_state_subscription object associated with the given
+ * ast_sip_subscription in the datastore.
+ */
+static struct exten_state_subscription *get_exten_state_sub(
+	struct ast_sip_subscription *sub)
+{
+	RAII_VAR(struct ast_datastore *, datastore,
+		 ast_sip_subscription_get_datastore(sub, ds_name), ao2_cleanup);
+
+	return datastore ? datastore->data : NULL;
+}
+
+static void subscription_shutdown(struct ast_sip_subscription *sub)
+{
+	struct exten_state_subscription *exten_state_sub = get_exten_state_sub(sub);
+
+	if (!exten_state_sub) {
+		return;
+	}
+
+	ast_extension_state_del(exten_state_sub->id, state_changed);
+	ast_sip_subscription_remove_datastore(exten_state_sub->sip_sub, ds_name);
+	/* remove data store reference */
+	ao2_cleanup(exten_state_sub);
+}
+
+static struct ast_sip_subscription *new_subscribe(struct ast_sip_endpoint *endpoint,
+						  pjsip_rx_data *rdata)
+{
+	pjsip_uri *uri = rdata->msg_info.msg->line.req.uri;
+	pjsip_sip_uri *sip_uri = pjsip_uri_get_uri(uri);
+	RAII_VAR(struct exten_state_subscription *, exten_state_sub, NULL, ao2_cleanup);
+
+	if (!PJSIP_URI_SCHEME_IS_SIP(uri) && !PJSIP_URI_SCHEME_IS_SIPS(uri)) {
+		ast_log(LOG_WARNING, "Attempt to SUBSCRIBE to a non-SIP URI\n");
+		return NULL;
+	}
+
+	if (!(exten_state_sub = exten_state_subscription_alloc(endpoint, AST_SIP_NOTIFIER, rdata))) {
+		return NULL;
+	}
+
+	ast_copy_string(exten_state_sub->context, endpoint->context, sizeof(exten_state_sub->context));
+	ast_copy_pj_str(exten_state_sub->exten, &sip_uri->user, sizeof(exten_state_sub->exten));
+
+	if ((exten_state_sub->id = ast_extension_state_add_destroy_extended(
+		     exten_state_sub->context, exten_state_sub->exten,
+		     state_changed, state_changed_destroy, exten_state_sub)) < 0) {
+		ast_log(LOG_WARNING, "Unable to subscribe endpoint '%s' to extension '%s@%s'\n",
+			ast_sorcery_object_get_id(endpoint), exten_state_sub->exten,
+			exten_state_sub->context);
+		pjsip_evsub_terminate(ast_sip_subscription_get_evsub(exten_state_sub->sip_sub), PJ_FALSE);
+		return NULL;
+	}
+
+	/* bump the ref since ast_extension_state_add holds a reference */
+	ao2_ref(exten_state_sub, +1);
+
+	if (add_datastore(exten_state_sub)) {
+		ast_log(LOG_WARNING, "Unable to add to subscription datastore.\n");
+		pjsip_evsub_terminate(ast_sip_subscription_get_evsub(exten_state_sub->sip_sub), PJ_FALSE);
+		return NULL;
+	}
+
+	if (pjsip_evsub_accept(ast_sip_subscription_get_evsub(exten_state_sub->sip_sub),
+			       rdata, 200, NULL) != PJ_SUCCESS) {
+		ast_log(LOG_WARNING, "Unable to accept the incoming extension state subscription.\n");
+		pjsip_evsub_terminate(ast_sip_subscription_get_evsub(exten_state_sub->sip_sub), PJ_FALSE);
+		return NULL;
+	}
+
+	send_notify(exten_state_sub, NULL, PJSIP_EVSUB_STATE_ACTIVE);
+	return exten_state_sub->sip_sub;
+}
+
+static void resubscribe(struct ast_sip_subscription *sub, pjsip_rx_data *rdata,
+			struct ast_sip_subscription_response_data *response_data)
+{
+	struct exten_state_subscription *exten_state_sub = get_exten_state_sub(sub);
+
+	if (!exten_state_sub) {
+		return;
+	}
+
+	send_notify(exten_state_sub, NULL, PJSIP_EVSUB_STATE_ACTIVE);
+}
+
+static void subscription_timeout(struct ast_sip_subscription *sub)
+{
+	struct exten_state_subscription *exten_state_sub = get_exten_state_sub(sub);
+
+	if (!exten_state_sub) {
+		return;
+	}
+
+	ast_verbose(VERBOSE_PREFIX_3 "Subscription has timed out.\n");
+	send_notify(exten_state_sub, "timeout", PJSIP_EVSUB_STATE_TERMINATED);
+}
+
+static void subscription_terminated(struct ast_sip_subscription *sub,
+				    pjsip_rx_data *rdata)
+{
+	struct exten_state_subscription *exten_state_sub = get_exten_state_sub(sub);
+
+	if (!exten_state_sub) {
+		return;
+	}
+
+	ast_verbose(VERBOSE_PREFIX_3 "Subscription has been terminated.\n");
+	send_notify(exten_state_sub, NULL, PJSIP_EVSUB_STATE_TERMINATED);
+}
+
+/*!
+ * \internal
+ * \brief Create and register a subscription handler.
+ *
+ * Creates a subscription handler that can be registered with the pub/sub
+ * framework for the given event_name and accept value.
+ */
+static struct ast_sip_subscription_handler *create_and_register_handler(
+	const char *event_name, const char *accept)
+{
+	struct ast_sip_subscription_handler *handler =
+		ao2_alloc(sizeof(*handler), NULL);
+
+	if (!handler) {
+		return NULL;
+	}
+
+	handler->event_name = event_name;
+	handler->accept[0] = accept;
+
+	handler->subscription_shutdown = subscription_shutdown;
+	handler->new_subscribe = new_subscribe;
+	handler->resubscribe = resubscribe;
+	handler->subscription_timeout = subscription_timeout;
+	handler->subscription_terminated = subscription_terminated;
+
+	if (ast_sip_register_subscription_handler(handler)) {
+		ast_log(LOG_WARNING, "Unable to register subscription handler %s\n",
+			handler->event_name);
+		ao2_cleanup(handler);
+		return NULL;
+	}
+
+	return handler;
+}
+
+int ast_sip_register_exten_state_provider(struct ast_sip_exten_state_provider *obj)
+{
+	if (ast_strlen_zero(obj->type)) {
+		ast_log(LOG_WARNING, "Type not specified on provider for event %s\n",
+			obj->event_name);
+		return -1;
+	}
+
+	if (ast_strlen_zero(obj->subtype)) {
+		ast_log(LOG_WARNING, "Subtype not specified on provider for event %s\n",
+			obj->event_name);
+		return -1;
+	}
+
+	if (!obj->create_body) {
+		ast_log(LOG_WARNING, "Body handler not specified on provide for event %s\n",
+		    obj->event_name);
+		return -1;
+	}
+
+	if (!(obj->handler = create_and_register_handler(obj->event_name, obj->body_type))) {
+		ast_log(LOG_WARNING, "Handler could not be registered for provider event %s\n",
+		    obj->event_name);
+		return -1;
+	}
+
+	/* scope to avoid mix declarations */
+	{
+		SCOPED_LOCK(lock, &providers, AST_RWLIST_WRLOCK, AST_RWLIST_UNLOCK);
+		AST_RWLIST_INSERT_TAIL(&providers, obj, next);
+		ast_module_ref(ast_module_info->self);
+	}
+
+	return 0;
+}
+
+void ast_sip_unregister_exten_state_provider(struct ast_sip_exten_state_provider *obj)
+{
+	struct ast_sip_exten_state_provider *i;
+	SCOPED_LOCK(lock, &providers, AST_RWLIST_WRLOCK, AST_RWLIST_UNLOCK);
+	AST_RWLIST_TRAVERSE_SAFE_BEGIN(&providers, i, next) {
+		if (i == obj) {
+			ast_sip_unregister_subscription_handler(i->handler);
+			ao2_cleanup(i->handler);
+			AST_RWLIST_REMOVE_CURRENT(next);
+			ast_module_unref(ast_module_info->self);
+			break;
+		}
+	}
+	AST_RWLIST_TRAVERSE_SAFE_END;
+}
+
+static int load_module(void)
+{
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+static int unload_module(void)
+{
+	return 0;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER, "PJSIP Extension State Notifications",
+		.load = load_module,
+		.unload = unload_module,
+		.load_pri = AST_MODPRI_CHANNEL_DEPEND,
+);