messaging.c File Reference

Stasis out-of-call text message support. More...

#include "asterisk.h"
#include "asterisk/message.h"
#include "asterisk/endpoints.h"
#include "asterisk/astobj2.h"
#include "asterisk/vector.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"
#include "asterisk/test.h"
#include "messaging.h"

Include dependency graph for messaging.c:

Go to the source code of this file.

Data Structures
struct	application_tuple
	Storage object for an application. More...
struct	message_subscription
	A subscription to some endpoint or technology. More...

Macros
#define	ENDPOINTS_NUM_BUCKETS   127
	Number of buckets for the endpoint_subscriptions container. More...
#define	TECH_WILDCARD   "__AST_ALL_TECH"
	Subscription to all technologies. More...

Functions
static struct application_tuple *	application_tuple_alloc (const char *app_name, message_received_cb callback, void *pvt)
static int	application_tuple_cmp (struct application_tuple *item, const char *key)
static	AST_VECTOR (struct message_subscription *)
	The subscriptions to technologies. More...
static void	dispatch_message (struct message_subscription *sub, const char *endpoint_name, struct ast_json *json_msg)
static struct message_subscription *	get_or_create_subscription (struct ast_endpoint *endpoint)
static struct message_subscription *	get_subscription (struct ast_endpoint *endpoint)
static int	handle_msg_cb (struct ast_msg *msg)
static int	has_destination_cb (const struct ast_msg *msg)
static int	is_app_subscribed (struct message_subscription *sub, const char *app_name)
static struct message_subscription *	message_subscription_alloc (const char *token)
static int	message_subscription_compare_cb (void *obj, void *arg, int flags)
static void	message_subscription_dtor (void *obj)
static int	message_subscription_hash_cb (const void *obj, const int flags)
int	messaging_app_subscribe_endpoint (const char *app_name, struct ast_endpoint *endpoint, message_received_cb callback, void *pvt)
	Subscribe an application to an endpoint for messages. More...
void	messaging_app_unsubscribe_endpoint (const char *app_name, const char *endpoint_id)
	Subscribe for messages from a particular endpoint. More...
int	messaging_cleanup (void)
	Tidy up the messaging layer. More...
int	messaging_init (void)
	Initialize the messaging layer. More...
static int	messaging_subscription_cmp (struct message_subscription *sub, const char *key)
static void	msg_to_endpoint (const struct ast_msg *msg, char *buf, size_t len)
static struct ast_json *	msg_to_json (struct ast_msg *msg)

Variables
struct ast_msg_handler	ari_msg_handler
static struct ao2_container *	endpoint_subscriptions
	The subscriptions to endpoints. More...

Detailed Description

Stasis out-of-call text message support.

Author

Matt Jordan mjord.nosp@m.an@d.nosp@m.igium.nosp@m..com

Definition in file messaging.c.

Macro Definition Documentation

ENDPOINTS_NUM_BUCKETS

#define ENDPOINTS_NUM_BUCKETS   127

Number of buckets for the endpoint_subscriptions container.

Definition at line 46 of file messaging.c.

Referenced by messaging_init().

TECH_WILDCARD

#define TECH_WILDCARD   "__AST_ALL_TECH"

Subscription to all technologies.

Definition at line 41 of file messaging.c.

Referenced by get_or_create_subscription(), get_subscription(), handle_msg_cb(), has_destination_cb(), and messaging_app_unsubscribe_endpoint().

Function Documentation

application_tuple_alloc()

static struct application_tuple* application_tuple_alloc ( const char *  app_name, message_received_cb  callback, void *  pvt  )

static

Definition at line 89 of file messaging.c.

References AO2_ALLOC_OPT_LOCK_NOLOCK, ao2_alloc_options, ao2_bump, application_tuple::app_name, ast_assert, application_tuple::callback, NULL, and application_tuple::pvt.

Referenced by messaging_app_subscribe_endpoint().

{
   struct application_tuple *tuple;
   size_t size = sizeof(*tuple) + strlen(app_name) + 1;

   ast_assert(callback != NULL);

   tuple = ao2_alloc_options(size, application_tuple_dtor, AO2_ALLOC_OPT_LOCK_NOLOCK);
   if (!tuple) {
      return NULL;
   }

   strcpy(tuple->app_name, app_name); /* Safe */
   tuple->pvt = ao2_bump(pvt);
   tuple->callback = callback;

   return tuple;
}

application_tuple_cmp()

static int application_tuple_cmp ( struct application_tuple *  item, const char *  key  )

static

Definition at line 373 of file messaging.c.

References application_tuple::app_name.

Referenced by messaging_app_unsubscribe_endpoint().

{
   return !strcmp(item->app_name, key) ? 1 : 0;
}

AST_VECTOR()

static AST_VECTOR ( struct message_subscription *  )

static

The subscriptions to technologies.

Note

These are stored separately from standard endpoints, given how relatively few of them there are.

Definition at line 75 of file messaging.c.

References ao2_cleanup, and application_tuple::pvt.

{
   struct application_tuple *tuple = obj;

   ao2_cleanup(tuple->pvt);
}

dispatch_message()

static void dispatch_message ( struct message_subscription *  sub, const char *  endpoint_name, struct ast_json *  json_msg  )

static

Definition at line 292 of file messaging.c.

References ast_debug, AST_VECTOR_GET, AST_VECTOR_SIZE, application_tuple::callback, and application_tuple::pvt.

Referenced by handle_msg_cb().

{
   int i;

   ast_debug(3, "Dispatching message to subscription %s for endpoint %s\n",
      sub->token,
      endpoint_name);
   for (i = 0; i < AST_VECTOR_SIZE(&sub->applications); i++) {
      struct application_tuple *tuple = AST_VECTOR_GET(&sub->applications, i);

      tuple->callback(endpoint_name, json_msg, tuple->pvt);
   }
}

get_or_create_subscription()

static struct message_subscription* get_or_create_subscription ( struct ast_endpoint *  endpoint )

static

Definition at line 459 of file messaging.c.

References ao2_link, ao2_ref, ast_endpoint_get_id(), ast_endpoint_get_resource(), ast_rwlock_unlock, ast_rwlock_wrlock, ast_strlen_zero, AST_VECTOR_APPEND, get_subscription(), message_subscription_alloc(), NULL, sub, and TECH_WILDCARD.

Referenced by messaging_app_subscribe_endpoint().

{
   struct message_subscription *sub = get_subscription(endpoint);

   if (sub) {
      return sub;
   }

   sub = message_subscription_alloc(endpoint ? ast_endpoint_get_id(endpoint) : TECH_WILDCARD);
   if (!sub) {
      return NULL;
   }

   /* Either endpoint_subscriptions or tech_subscriptions will hold a reference to
    * the subscription. This reference is released to allow the subscription to
    * eventually destruct when there are no longer any applications receiving
    * events from the subscription.
    */
   if (endpoint && !ast_strlen_zero(ast_endpoint_get_resource(endpoint))) {
      ao2_link(endpoint_subscriptions, sub);
   } else {
      ast_rwlock_wrlock(&tech_subscriptions_lock);
      ao2_ref(sub, +1);
      if (AST_VECTOR_APPEND(&tech_subscriptions, sub)) {
         /* Release the refs that were for the vector and the allocation. */
         ao2_ref(sub, -2);
         sub = NULL;
      }
      ast_rwlock_unlock(&tech_subscriptions_lock);
   }

   return sub;
}

get_subscription()

static struct message_subscription* get_subscription ( struct ast_endpoint *  endpoint )

static

Definition at line 394 of file messaging.c.

References ao2_bump, ao2_find, ast_endpoint_get_id(), ast_endpoint_get_resource(), ast_endpoint_get_tech(), ast_rwlock_rdlock, ast_rwlock_unlock, ast_strlen_zero, AST_VECTOR_GET, AST_VECTOR_SIZE, NULL, OBJ_SEARCH_KEY, sub, and TECH_WILDCARD.

Referenced by get_or_create_subscription(), and messaging_app_unsubscribe_endpoint().

{
   struct message_subscription *sub = NULL;

   if (endpoint && !ast_strlen_zero(ast_endpoint_get_resource(endpoint))) {
      sub = ao2_find(endpoint_subscriptions, ast_endpoint_get_id(endpoint), OBJ_SEARCH_KEY);
   } else {
      int i;

      ast_rwlock_rdlock(&tech_subscriptions_lock);
      for (i = 0; i < AST_VECTOR_SIZE(&tech_subscriptions); i++) {
         sub = AST_VECTOR_GET(&tech_subscriptions, i);

         if (sub && !strcmp(sub->token, endpoint ? ast_endpoint_get_tech(endpoint) : TECH_WILDCARD)) {
            ao2_bump(sub);
            break;
         }

         /* Need to reset the pointer at this line to prevent from using the wrong subscription due to
          * the token check failing.
          */
         sub = NULL;
      }
      ast_rwlock_unlock(&tech_subscriptions_lock);
   }

   return sub;
}

handle_msg_cb()

static int handle_msg_cb ( struct ast_msg *  msg )

static

Definition at line 306 of file messaging.c.

References ao2_find, ao2_ref, ast_json_unref(), ast_rwlock_rdlock, ast_rwlock_unlock, AST_VECTOR_GET, AST_VECTOR_SIZE, buf, dispatch_message(), msg_to_endpoint(), msg_to_json(), OBJ_SEARCH_KEY, result, sub, and TECH_WILDCARD.

{
   /* We have at most 3 subscriptions: TECH_WILDCARD, tech itself, and endpoint. */
   struct message_subscription *matching_subscriptions[3];
   struct message_subscription *sub;
   int i, j;
   int result;
   char buf[256];
   const char *endpoint_name;
   struct ast_json *json_msg;

   msg_to_endpoint(msg, buf, sizeof(buf));
   endpoint_name = buf;
   json_msg = msg_to_json(msg);
   if (!json_msg) {
      return -1;
   }
   result = -1;

   /* Find subscriptions to TECH_WILDCARD and to the endpoint's technology. */
   ast_rwlock_rdlock(&tech_subscriptions_lock);
   for (i = 0, j = 0; i < AST_VECTOR_SIZE(&tech_subscriptions) && j < 2; i++) {
      sub = AST_VECTOR_GET(&tech_subscriptions, i);

      if (!sub) {
         continue;
      }

      if (!strcmp(sub->token, TECH_WILDCARD)
          || !strncasecmp(sub->token, buf, strlen(sub->token))) {
         ao2_ref(sub, +1);
         matching_subscriptions[j++] = sub;
      }
   }
   ast_rwlock_unlock(&tech_subscriptions_lock);

   /* Find the subscription to this particular endpoint. */
   sub = ao2_find(endpoint_subscriptions, buf, OBJ_SEARCH_KEY);
   if (sub) {
      matching_subscriptions[j++] = sub;
   }

   /* Dispatch the message to all matching subscriptions. */
   for (i = 0; i < j; i++) {
      sub = matching_subscriptions[i];

      dispatch_message(sub, endpoint_name, json_msg);

      ao2_ref(sub, -1);
      result = 0;
   }

   ast_json_unref(json_msg);
   return result;
}

has_destination_cb()

static int has_destination_cb ( const struct ast_msg *  msg )

static

Definition at line 213 of file messaging.c.

References ao2_find, ao2_ref, ast_debug, ast_rwlock_rdlock, ast_rwlock_unlock, AST_VECTOR_GET, AST_VECTOR_SIZE, buf, match(), msg_to_endpoint(), OBJ_SEARCH_KEY, sub, and TECH_WILDCARD.

{
   struct message_subscription *sub;
   int i;
   char buf[256];

   msg_to_endpoint(msg, buf, sizeof(buf));

   ast_rwlock_rdlock(&tech_subscriptions_lock);
   for (i = 0; i < AST_VECTOR_SIZE(&tech_subscriptions); i++) {
      sub = AST_VECTOR_GET(&tech_subscriptions, i);

      if (!sub) {
         continue;
      }

      if (!strcmp(sub->token, TECH_WILDCARD)
          || !strncasecmp(sub->token, buf, strlen(sub->token))
          || !strncasecmp(sub->token, buf, strlen(sub->token))) {
         ast_rwlock_unlock(&tech_subscriptions_lock);
         goto match;
      }

   }
   ast_rwlock_unlock(&tech_subscriptions_lock);

   sub = ao2_find(endpoint_subscriptions, buf, OBJ_SEARCH_KEY);
   if (sub) {
      ao2_ref(sub, -1);
      goto match;
   }

   ast_debug(1, "No subscription found for %s\n", buf);
   return 0;

match:
   return 1;
}

is_app_subscribed()

static int is_app_subscribed ( struct message_subscription *  sub, const char *  app_name  )

static

Definition at line 378 of file messaging.c.

References application_tuple::app_name, AST_VECTOR_GET, and AST_VECTOR_SIZE.

Referenced by messaging_app_subscribe_endpoint(), and messaging_app_unsubscribe_endpoint().

{
   int i;

   for (i = 0; i < AST_VECTOR_SIZE(&sub->applications); i++) {
      struct application_tuple *tuple;

      tuple = AST_VECTOR_GET(&sub->applications, i);
      if (tuple && !strcmp(tuple->app_name, app_name)) {
         return 1;
      }
   }

   return 0;
}

message_subscription_alloc()

static struct message_subscription* message_subscription_alloc ( const char *  token )

static

Definition at line 123 of file messaging.c.

References AO2_ALLOC_OPT_LOCK_RWLOCK, ao2_alloc_options, message_subscription_dtor(), NULL, and sub.

Referenced by get_or_create_subscription().

{
   struct message_subscription *sub;
   size_t size = sizeof(*sub) + strlen(token) + 1;

   sub = ao2_alloc_options(size, message_subscription_dtor, AO2_ALLOC_OPT_LOCK_RWLOCK);
   if (!sub) {
      return NULL;
   }
   strcpy(sub->token, token); /* Safe */

   return sub;
}

message_subscription_compare_cb()

static int message_subscription_compare_cb ( void *  obj, void *  arg, int  flags  )

static

AO2 comparison function for message_subscription

Definition at line 160 of file messaging.c.

References CMP_MATCH, OBJ_SEARCH_KEY, OBJ_SEARCH_MASK, OBJ_SEARCH_OBJECT, and OBJ_SEARCH_PARTIAL_KEY.

Referenced by messaging_init().

{
   const struct message_subscription *object_left = obj;
   const struct message_subscription *object_right = arg;
   const char *right_key = arg;
   int cmp;

   switch (flags & OBJ_SEARCH_MASK) {
   case OBJ_SEARCH_OBJECT:
      right_key = object_right->token;
      /* Fall through */
   case OBJ_SEARCH_KEY:
      cmp = strcmp(object_left->token, right_key);
      break;
   case OBJ_SEARCH_PARTIAL_KEY:
      /*
       * We could also use a partial key struct containing a length
       * so strlen() does not get called for every comparison instead.
       */
      cmp = strncmp(object_left->token, right_key, strlen(right_key));
      break;
   default:
      /*
       * What arg points to is specific to this traversal callback
       * and has no special meaning to astobj2.
       */
      cmp = 0;
      break;
   }
   if (cmp) {
      return 0;
   }
   /*
    * At this point the traversal callback is identical to a sorted
    * container.
    */
   return CMP_MATCH;
}

message_subscription_dtor()

static void message_subscription_dtor ( void *  obj )

static

Definition at line 109 of file messaging.c.

References ao2_cleanup, AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_SIZE, and sub.

Referenced by message_subscription_alloc().

{
   struct message_subscription *sub = obj;
   int i;

   for (i = 0; i < AST_VECTOR_SIZE(&sub->applications); i++) {
      struct application_tuple *tuple = AST_VECTOR_GET(&sub->applications, i);

      ao2_cleanup(tuple);
   }
   AST_VECTOR_FREE(&sub->applications);
}

message_subscription_hash_cb()

static int message_subscription_hash_cb ( const void *  obj, const int  flags  )

static

AO2 hash function for message_subscription

Definition at line 138 of file messaging.c.

References ast_assert, ast_str_hash(), OBJ_SEARCH_KEY, OBJ_SEARCH_MASK, OBJ_SEARCH_OBJECT, and sub.

Referenced by messaging_init().

{
   const struct message_subscription *sub;
   const char *key;

   switch (flags & OBJ_SEARCH_MASK) {
   case OBJ_SEARCH_KEY:
      key = obj;
      break;
   case OBJ_SEARCH_OBJECT:
      sub = obj;
      key = sub->token;
      break;
   default:
      /* Hash can only work on something with a full key. */
      ast_assert(0);
      return 0;
   }
   return ast_str_hash(key);
}

messaging_app_subscribe_endpoint()

int messaging_app_subscribe_endpoint	(	const char *	app_name,
		struct ast_endpoint *	endpoint,
		message_received_cb	callback,
		void *	pvt
	)

Subscribe an application to an endpoint for messages.

Parameters

app_name	The name of the Stasis Message Bus API application to subscribe to endpoint
endpoint	The endpoint object to subscribe to
message_received_cb	The callback to call when a message is received
pvt	An ao2 ref counted object that will be passed to the callback.

Return values

0	subscription was successful
-1	subscription failed

Definition at line 493 of file messaging.c.

References ao2_cleanup, ao2_lock, ao2_ref, ao2_unlock, application_tuple_alloc(), ast_debug, ast_endpoint_get_id(), ast_test_suite_event_notify, AST_VECTOR_APPEND, get_or_create_subscription(), is_app_subscribed(), NULL, RAII_VAR, and sub.

Referenced by app_subscribe_endpoint().

{
   RAII_VAR(struct message_subscription *, sub, NULL, ao2_cleanup);
   struct application_tuple *tuple;

   sub = get_or_create_subscription(endpoint);
   if (!sub) {
      return -1;
   }

   ao2_lock(sub);
   if (is_app_subscribed(sub, app_name)) {
      ao2_unlock(sub);
      return 0;
   }

   tuple = application_tuple_alloc(app_name, callback, pvt);
   if (!tuple) {
      ao2_unlock(sub);
      return -1;
   }
   if (AST_VECTOR_APPEND(&sub->applications, tuple)) {
      ao2_ref(tuple, -1);
      ao2_unlock(sub);
      return -1;
   }
   ao2_unlock(sub);

   ast_debug(3, "App '%s' subscribed to messages from endpoint '%s'\n", app_name, endpoint ? ast_endpoint_get_id(endpoint) : "-- ALL --");
   ast_test_suite_event_notify("StasisMessagingSubscription", "SubState: Subscribed\r\nAppName: %s\r\nToken: %s\r\n",
      app_name, endpoint ? ast_endpoint_get_id(endpoint) : "ALL");

   return 0;
}

messaging_app_unsubscribe_endpoint()

void messaging_app_unsubscribe_endpoint	(	const char *	app_name,
		const char *	endpoint_id
	)

Subscribe for messages from a particular endpoint.

Parameters

app_name	Name of the stasis application to unsubscribe from messaging
endpoint_id	The ID of the endpoint we no longer care about

Return values

0	success
-1	error

Definition at line 423 of file messaging.c.

References ao2_cleanup, ao2_lock, ao2_ref, ao2_unlink, ao2_unlock, application_tuple_cmp(), ast_debug, ast_endpoint_find_by_id(), ast_endpoint_get_id(), ast_endpoint_get_resource(), ast_rwlock_unlock, ast_rwlock_wrlock, ast_strlen_zero, ast_test_suite_event_notify, AST_VECTOR_ELEM_CLEANUP_NOOP, AST_VECTOR_REMOVE_CMP_UNORDERED, AST_VECTOR_SIZE, get_subscription(), is_app_subscribed(), messaging_subscription_cmp(), NULL, RAII_VAR, sub, and TECH_WILDCARD.

Referenced by unsubscribe().

{
   RAII_VAR(struct message_subscription *, sub, NULL, ao2_cleanup);
   RAII_VAR(struct ast_endpoint *, endpoint, NULL, ao2_cleanup);

   endpoint = ast_endpoint_find_by_id(endpoint_id);
   sub = get_subscription(endpoint);
   if (!sub) {
      return;
   }

   ao2_lock(sub);
   if (!is_app_subscribed(sub, app_name)) {
      ao2_unlock(sub);
      return;
   }

   AST_VECTOR_REMOVE_CMP_UNORDERED(&sub->applications, app_name, application_tuple_cmp, ao2_cleanup);
   if (AST_VECTOR_SIZE(&sub->applications) == 0) {
      if (endpoint && !ast_strlen_zero(ast_endpoint_get_resource(endpoint))) {
         ao2_unlink(endpoint_subscriptions, sub);
      } else {
         ast_rwlock_wrlock(&tech_subscriptions_lock);
         AST_VECTOR_REMOVE_CMP_UNORDERED(&tech_subscriptions, endpoint ? ast_endpoint_get_id(endpoint) : TECH_WILDCARD,
            messaging_subscription_cmp, AST_VECTOR_ELEM_CLEANUP_NOOP);
         ast_rwlock_unlock(&tech_subscriptions_lock);
         ao2_ref(sub, -1); /* Release the reference held by tech_subscriptions */
      }
   }
   ao2_unlock(sub);

   ast_debug(3, "App '%s' unsubscribed to messages from endpoint '%s'\n", app_name, endpoint ? ast_endpoint_get_id(endpoint) : "-- ALL --");
   ast_test_suite_event_notify("StasisMessagingSubscription", "SubState: Unsubscribed\r\nAppName: %s\r\nToken: %s\r\n",
      app_name, endpoint ? ast_endpoint_get_id(endpoint) : "ALL");
}

messaging_cleanup()

int messaging_cleanup

(

void

)

Tidy up the messaging layer.

Return values

0	success
-1	failure

Definition at line 529 of file messaging.c.

References ao2_ref, ast_msg_handler_unregister(), ast_rwlock_destroy, and AST_VECTOR_FREE.

Referenced by unload_module().

{
   ast_msg_handler_unregister(&ari_msg_handler);
   ao2_ref(endpoint_subscriptions, -1);
   AST_VECTOR_FREE(&tech_subscriptions);
   ast_rwlock_destroy(&tech_subscriptions_lock);\

   return 0;
}

messaging_init()

int messaging_init

(

void

)

Initialize the messaging layer.

Return values

0	success
-1	failure

Definition at line 539 of file messaging.c.

References AO2_ALLOC_OPT_LOCK_RWLOCK, ao2_ref, ao2_t_container_alloc_hash, ast_msg_handler_register(), ast_rwlock_destroy, ast_rwlock_init, AST_VECTOR_FREE, AST_VECTOR_INIT, ENDPOINTS_NUM_BUCKETS, message_subscription_compare_cb(), message_subscription_hash_cb(), and NULL.

Referenced by load_module().

{
   endpoint_subscriptions = ao2_t_container_alloc_hash(AO2_ALLOC_OPT_LOCK_RWLOCK, 0,
      ENDPOINTS_NUM_BUCKETS, message_subscription_hash_cb, NULL,
      message_subscription_compare_cb, "Endpoint messaging subscription container creation");
   if (!endpoint_subscriptions) {
      return -1;
   }

   if (AST_VECTOR_INIT(&tech_subscriptions, 4)) {
      ao2_ref(endpoint_subscriptions, -1);
      return -1;
   }

   if (ast_rwlock_init(&tech_subscriptions_lock)) {
      ao2_ref(endpoint_subscriptions, -1);
      AST_VECTOR_FREE(&tech_subscriptions);
      return -1;
   }

   if (ast_msg_handler_register(&ari_msg_handler)) {
      ao2_ref(endpoint_subscriptions, -1);
      AST_VECTOR_FREE(&tech_subscriptions);
      ast_rwlock_destroy(&tech_subscriptions_lock);
      return -1;
   }

   return 0;
}

messaging_subscription_cmp()

static int messaging_subscription_cmp ( struct message_subscription *  sub, const char *  key  )

static

Definition at line 368 of file messaging.c.

Referenced by messaging_app_unsubscribe_endpoint().

{
   return !strcmp(sub->token, key) ? 1 : 0;
}

msg_to_endpoint()

static void msg_to_endpoint ( const struct ast_msg *  msg, char *  buf, size_t  len  )

static

Definition at line 200 of file messaging.c.

References ast_msg_get_endpoint(), ast_msg_get_tech(), ast_strlen_zero, and S_OR.

Referenced by handle_msg_cb(), and has_destination_cb().

{
   const char *endpoint = ast_msg_get_endpoint(msg);

   snprintf(buf, len, "%s%s%s", ast_msg_get_tech(msg),
      ast_strlen_zero(endpoint) ? "" : "/",
      S_OR(endpoint, ""));
}

msg_to_json()

static struct ast_json* msg_to_json ( struct ast_msg *  msg )

static

Definition at line 252 of file messaging.c.

References ast_json_object_create(), ast_json_object_set(), ast_json_pack(), ast_json_string_create(), ast_json_unref(), ast_msg_get_body(), ast_msg_get_from(), ast_msg_get_to(), ast_msg_var_iterator_destroy(), ast_msg_var_iterator_init(), ast_msg_var_iterator_next_received(), ast_msg_var_unref_current(), name, NULL, and value.

Referenced by handle_msg_cb().

{
   struct ast_json *json_obj;
   struct ast_json *json_vars;
   struct ast_msg_var_iterator *it_vars;
   const char *name;
   const char *value;

   it_vars = ast_msg_var_iterator_init(msg);
   if (!it_vars) {
      return NULL;
   }

   json_vars = ast_json_object_create();
   if (!json_vars) {
      ast_msg_var_iterator_destroy(it_vars);
      return NULL;
   }

   while (ast_msg_var_iterator_next_received(msg, it_vars, &name, &value)) {
      struct ast_json *json_val = ast_json_string_create(value);
      if (!json_val || ast_json_object_set(json_vars, name, json_val)) {
         ast_json_unref(json_vars);
         ast_msg_var_iterator_destroy(it_vars);
         return NULL;
      }

      ast_msg_var_unref_current(it_vars);
   }
   ast_msg_var_iterator_destroy(it_vars);

   json_obj = ast_json_pack("{s: s, s: s, s: s, s: o}",
      "from", ast_msg_get_from(msg),
      "to", ast_msg_get_to(msg),
      "body", ast_msg_get_body(msg),
      "variables", json_vars);

   return json_obj;
}

Variable Documentation

ari_msg_handler

struct ast_msg_handler ari_msg_handler

Initial value:

= {
   .name = "ari",
   .handle_msg = handle_msg_cb,
   .has_destination = has_destination_cb,
}

Definition at line 362 of file messaging.c.

endpoint_subscriptions

struct ao2_container* endpoint_subscriptions

static

The subscriptions to endpoints.

Definition at line 67 of file messaging.c.