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Merge "ARI: Channels added to Stasis application during WebSocket creation ..."

This commit is contained in:
Mark Michelson 2015-07-31 11:58:30 -05:00 committed by Gerrit Code Review
parent 92ddda68aa fe804b09b3
commit b002e09214
11 changed files with 499 additions and 193 deletions
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10
include/asterisk/ari.h
View File

@ -187,6 +187,16 @@ struct ast_json *ast_ari_websocket_session_read(
int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session,
struct ast_json *message);
/*!
* \brief Get the Session ID for an ARI WebSocket.
*
* \param session Session to query.
* \return Session ID.
* \return \c NULL on error.
*/
const char *ast_ari_websocket_session_id(
const struct ast_ari_websocket_session *session);
/*!
* \brief The stock message to return when out of memory.
*

2
include/asterisk/astobj2.h
View File

@ -1642,7 +1642,7 @@ void *__ao2_unlink(struct ao2_container *c, void *obj, int flags,
* The use of flags argument is the follow:
*
* OBJ_UNLINK unlinks the object found
* OBJ_NODATA on match, do return an object
* OBJ_NODATA on match, do not return an object
* Callbacks use OBJ_NODATA as a default
* functions such as find() do
* OBJ_MULTIPLE return multiple matches

10
include/asterisk/http_websocket.h
View File

@ -77,13 +77,14 @@ struct ast_websocket;
* \param ser The TCP/TLS session
* \param parameters Parameters extracted from the request URI
* \param headers Headers included in the request
* \param session_id The id of the current session.
*
* \retval 0 The session should be accepted
* \retval -1 The session should be rejected. Note that the caller must send an error
* response using \ref ast_http_error.
* \since 13.5.0
*/
typedef int (*ast_websocket_pre_callback)(struct ast_tcptls_session_instance *ser, struct ast_variable *parameters, struct ast_variable *headers);
typedef int (*ast_websocket_pre_callback)(struct ast_tcptls_session_instance *ser, struct ast_variable *parameters, struct ast_variable *headers, const char *session_id);
/*!
* \brief Callback for when a new connection for a sub-protocol is established
@ -359,6 +360,13 @@ AST_OPTIONAL_API(int, ast_websocket_is_secure, (struct ast_websocket *session),
*/
AST_OPTIONAL_API(int, ast_websocket_set_nonblock, (struct ast_websocket *session), { errno = ENOSYS; return -1;});
/*!
* \brief Get the session ID for a WebSocket session.
*
* \retval session id
*/
AST_OPTIONAL_API(const char *, ast_websocket_session_id, (struct ast_websocket *session), { errno = ENOSYS; return NULL;});
/*!
* \brief Result code for a websocket client.
*/

2
include/asterisk/vector.h
View File

@ -110,7 +110,7 @@
/*!
* \brief Deallocates this vector.
*
* If any code to free the elements of this vector need to be run, that should
* If any code to free the elements of this vector needs to be run, that should
* be done prior to this call.
*
* \param vec Vector to deallocate.

8
res/ari/ari_websockets.c
View File

@ -153,7 +153,7 @@ struct ast_json *ast_ari_websocket_session_read(
"{" \
" \"error\": \"InvalidMessage\"," \
" \"message\": \"Message validation failed\"" \
"}"
"}"
int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session,
struct ast_json *message)
@ -196,3 +196,9 @@ void ari_handle_websocket(struct ast_websocket_server *ws_server,
ast_websocket_uri_cb(ser, &fake_urih, uri, method, get_params,
headers);
}
const char *ast_ari_websocket_session_id(
const struct ast_ari_websocket_session *session)
{
return ast_websocket_session_id(session->ws_session);
}

562
res/ari/resource_events.c
View File

@ -27,226 +27,455 @@
ASTERISK_REGISTER_FILE()
#include "resource_events.h"
#include "asterisk/astobj2.h"
#include "asterisk/stasis_app.h"
#include "resource_events.h"
#include "asterisk/vector.h"
/*! Number of buckets for the Stasis application hash table. Remember to keep it
* a prime number!
*/
/*! Number of buckets for the event session registry. Remember to keep it a prime number! */
#define EVENT_SESSION_NUM_BUCKETS 23
/*! Number of buckets for a websocket apps container. Remember to keep it a prime number! */
#define APPS_NUM_BUCKETS 7
/*! \brief A connection to the event WebSocket */
/*! Initial size of a message queue. */
#define MESSAGES_INIT_SIZE 23
/*! \brief A wrapper for the /ref ast_ari_websocket_session. */
struct event_session {
struct ast_ari_websocket_session *ws_session;
struct ao2_container *websocket_apps;
struct ast_ari_websocket_session *ws_session; /*!< Handle to the websocket session. */
struct ao2_container *websocket_apps; /*!< List of Stasis apps registered to
the websocket session. */
AST_VECTOR(, struct ast_json *) message_queue; /*!< Container for holding delayed messages. */
char session_id[]; /*!< The id for the websocket session. */
};
/*!
* \brief Explicitly shutdown a session.
*
* An explicit shutdown is necessary, since stasis-app has a reference to this
* session. We also need to be sure to null out the \c ws_session field, since
* the websocket is about to go away.
*
* \param session Session info struct.
*/
static void session_shutdown(struct event_session *session)
{
struct ao2_iterator i;
char *app;
SCOPED_AO2LOCK(lock, session);
/*! \brief \ref event_session error types. */
enum event_session_error_type {
ERROR_TYPE_STASIS_REGISTRATION = 1, /*!< Stasis failed to register the application. */
ERROR_TYPE_OOM = 2, /*!< Insufficient memory to create the event
session. */
ERROR_TYPE_MISSING_APP_PARAM = 3, /*!< HTTP request was missing an [app] parameter. */
ERROR_TYPE_INVALID_APP_PARAM = 4, /*!< HTTP request contained an invalid [app]
parameter. */
};
i = ao2_iterator_init(session->websocket_apps, 0);
while ((app = ao2_iterator_next(&i))) {
stasis_app_unregister(app);
ao2_cleanup(app);
}
ao2_iterator_destroy(&i);
ao2_cleanup(session->websocket_apps);
session->websocket_apps = NULL;
session->ws_session = NULL;
}
static void session_dtor(void *obj)
{
#ifdef AST_DEVMODE /* Avoid unused variable warning */
struct event_session *session = obj;
#endif
/* session_shutdown should have been called before */
ast_assert(session->ws_session == NULL);
ast_assert(session->websocket_apps == NULL);
}
static void session_cleanup(struct event_session *session)
{
session_shutdown(session);
ao2_cleanup(session);
}
static struct event_session *session_create(
struct ast_ari_websocket_session *ws_session)
{
RAII_VAR(struct event_session *, session, NULL, ao2_cleanup);
session = ao2_alloc(sizeof(*session), session_dtor);
session->ws_session = ws_session;
session->websocket_apps =
ast_str_container_alloc(APPS_NUM_BUCKETS);
if (!session->websocket_apps) {
return NULL;
}
ao2_ref(session, +1);
return session;
}
/*! \brief Local registry for created \ref event_session objects. */
static struct ao2_container *event_session_registry;
/*!
* \brief Callback handler for Stasis application messages.
*
* \internal
*
* \param data Void pointer to the event session (\ref event_session).
* \param app_name Name of the Stasis application that dispatched the message.
* \param message The dispatched message.
*/
static void app_handler(void *data, const char *app_name,
struct ast_json *message)
static void stasis_app_message_handler(
void *data, const char *app_name, struct ast_json *message)
{
struct event_session *session = data;
int res;
const char *msg_type = S_OR(
ast_json_string_get(ast_json_object_get(message, "type")),
"");
const char *msg_application = S_OR(
ast_json_string_get(ast_json_object_get(message, "application")),
"");
const char *msg_type, *msg_application;
if (!session) {
return;
}
/* Determine if we've been replaced */
ast_assert(session != NULL);
ao2_lock(session);
msg_type = S_OR(ast_json_string_get(ast_json_object_get(message, "type")), "");
msg_application = S_OR(
ast_json_string_get(ast_json_object_get(message, "application")), "");
/* If we've been replaced, remove the application from our local
websocket_apps container */
if (strcmp(msg_type, "ApplicationReplaced") == 0 &&
strcmp(msg_application, app_name) == 0) {
ao2_find(session->websocket_apps, msg_application,
OBJ_UNLINK | OBJ_NODATA);
}
res = ast_json_object_set(message, "application",
ast_json_string_create(app_name));
if(res != 0) {
return;
}
ao2_lock(session);
if (session->ws_session) {
/* Now, we need to determine our state to see how we will handle the message */
if (ast_json_object_set(message, "application", ast_json_string_create(app_name))) {
/* We failed to add an application element to our json message */
ast_log(LOG_WARNING,
"Failed to dispatch '%s' message from Stasis app '%s'; could not update message\n",
msg_type,
msg_application);
} else if (!session->ws_session) {
/* If the websocket is NULL, the message goes to the queue */
AST_VECTOR_APPEND(&session->message_queue, message);
ast_log(LOG_WARNING,
"Queued '%s' message for Stasis app '%s'; websocket is not ready\n",
msg_type,
msg_application);
} else {
/* We are ready to publish the message */
ast_ari_websocket_session_write(session->ws_session, message);
}
ao2_unlock(session);
}
/*!
* \brief Register for all of the apps given.
* \param session Session info struct.
* \param app_name Name of application to register.
* \brief AO2 comparison function for \ref event_session objects.
*
* \internal
*
* \param obj Void pointer to the \ref event_session container.
* \param arg Void pointer to the \ref event_session object.
* \param flags The \ref search_flags to use when creating the hash key.
*
* \retval 0 The objects are not equal.
* \retval CMP_MATCH The objects are equal.
*/
static int session_register_app(struct event_session *session,
const char *app_name)
static int event_session_compare(void *obj, void *arg, int flags)
{
const struct event_session *object_left = obj;
const struct event_session *object_right = arg;
const char *right_key = arg;
int cmp = 0;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_OBJECT:
right_key = object_right->session_id;
/* Fall through */
case OBJ_SEARCH_KEY:
cmp = strcmp(object_left->session_id, right_key);
break;
case OBJ_SEARCH_PARTIAL_KEY:
cmp = strncmp(object_left->session_id, right_key, strlen(right_key));
break;
default:
break;
}
return cmp ? 0 : CMP_MATCH;
}
/*!
* \brief AO2 hash function for \ref event_session objects.
*
* \details Computes hash value for the given \ref event_session, with respect to the
* provided search flags.
*
* \internal
*
* \param obj Void pointer to the \ref event_session object.
* \param flags The \ref search_flags to use when creating the hash key.
*
* \retval > 0 on success
* \retval 0 on failure
*/
static int event_session_hash(const void *obj, const int flags)
{
const struct event_session *session;
const char *key;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_KEY:
key = obj;
break;
case OBJ_SEARCH_OBJECT:
session = obj;
key = session->session_id;
break;
default:
/* Hash can only work on something with a full key. */
ast_assert(0);
return 0;
}
return ast_str_hash(key);
}
/*!
* \brief Explicitly shutdown a session.
*
* \details An explicit shutdown is necessary, since the \ref stasis_app has a reference
* to this session. We also need to be sure to null out the \c ws_session field,
* since the websocket is about to go away.
*
* \internal
*
* \param session Event session object (\ref event_session).
*/
static void event_session_shutdown(struct event_session *session)
{
struct ao2_iterator i;
char *app;
int j;
SCOPED_AO2LOCK(lock, session);
ast_assert(session->ws_session != NULL);
ast_assert(session->websocket_apps != NULL);
if (ast_strlen_zero(app_name)) {
return -1;
/* Clean up the websocket_apps container */
if (session->websocket_apps) {
i = ao2_iterator_init(session->websocket_apps, 0);
while ((app = ao2_iterator_next(&i))) {
stasis_app_unregister(app);
ao2_cleanup(app);
}
ao2_iterator_destroy(&i);
ao2_cleanup(session->websocket_apps);
session->websocket_apps = NULL;
}
if (ast_str_container_add(session->websocket_apps, app_name)) {
ast_ari_websocket_session_write(session->ws_session,
ast_ari_oom_json());
return -1;
/* Clean up the message_queue container */
for (j = 0; j < AST_VECTOR_SIZE(&session->message_queue); j++) {
struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, j);
ast_json_unref(msg);
}
AST_VECTOR_FREE(&session->message_queue);
/* Remove the handle to the underlying websocket session */
session->ws_session = NULL;
}
/*!
* \brief Updates the websocket session for an \ref event_session.
*
* \details The websocket for the given \ref event_session will be updated to the value
* of the \c ws_session argument.
*
* If the value of the \c ws_session is not \c NULL and there are messages in the
* event session's \c message_queue, the messages are dispatched and removed from
* the queue.
*
* \internal
*
* \param session The event session object to update (\ref event_session).
* \param ws_session Handle to the underlying websocket session
* (\ref ast_ari_websocket_session).
*/
static void event_session_update_websocket(
struct event_session *session, struct ast_ari_websocket_session *ws_session)
{
int i;
ast_assert(session != NULL);
ao2_lock(session);
session->ws_session = ws_session;
for (i = 0; i < AST_VECTOR_SIZE(&session->message_queue); i++) {
struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, i);
ast_ari_websocket_session_write(session->ws_session, msg);
ast_json_unref(msg);
}
stasis_app_register(app_name, app_handler, session);
AST_VECTOR_RESET(&session->message_queue, AST_VECTOR_ELEM_CLEANUP_NOOP);
ao2_unlock(session);
}
/*!
* \brief Processes cleanup actions for a \ref event_session object.
*
* \internal
*
* \param session The event session object to cleanup (\ref event_session).
*/
static void event_session_cleanup(struct event_session *session)
{
if (!session) {
return;
}
event_session_shutdown(session);
ao2_unlink(event_session_registry, session);
}
/*!
* \brief Event session object destructor (\ref event_session).
*
* \internal
*
* \param obj Void pointer to the \ref event_session object.
*/
static void event_session_dtor(void *obj)
{
#ifdef AST_DEVMODE /* Avoid unused variable warning */
struct event_session *session = obj;
#endif
/* event_session_shutdown should have been called before now */
ast_assert(session->ws_session == NULL);
ast_assert(session->websocket_apps == NULL);
ast_assert(AST_VECTOR_SIZE(&session->message_queue) == 0);
}
/*!
* \brief Handles \ref event_session error processing.
*
* \internal
*
* \param session The \ref event_session object.
* \param error The \ref event_session_error_type to handle.
* \param ser HTTP TCP/TLS Server Session (\ref ast_tcptls_session_instance).
*
* \retval -1 Always returns -1.
*/
static int event_session_allocation_error_handler(
struct event_session *session, enum event_session_error_type error,
struct ast_tcptls_session_instance *ser)
{
/* Notify the client */
switch (error) {
case ERROR_TYPE_STASIS_REGISTRATION:
ast_http_error(ser, 500, "Internal Server Error",
"Stasis registration failed");
break;
case ERROR_TYPE_OOM:
ast_http_error(ser, 500, "Internal Server Error",
"Allocation failed");
break;
case ERROR_TYPE_MISSING_APP_PARAM:
ast_http_error(ser, 400, "Bad Request",
"HTTP request is missing param: [app]");
break;
case ERROR_TYPE_INVALID_APP_PARAM:
ast_http_error(ser, 400, "Bad Request",
"Invalid application provided in param [app].");
break;
default:
break;
}
/* Cleanup the session */
event_session_cleanup(session);
return -1;
}
/*!
* \brief Creates an \ref event_session object and registers its apps with Stasis.
*
* \internal
*
* \param ser HTTP TCP/TLS Server Session (\ref ast_tcptls_session_instance).
* \param args The Stasis [app] parameters as parsed from the HTTP request
* (\ref ast_ari_events_event_websocket_args).
* \param session_id The id for the websocket session that will be created for this
* event session.
*
* \retval 0 on success
* \retval -1 on failure
*/
static int event_session_alloc(struct ast_tcptls_session_instance *ser,
struct ast_ari_events_event_websocket_args *args, const char *session_id)
{
RAII_VAR(struct event_session *, session, NULL, ao2_cleanup);
size_t size, i;
/* The request must have at least one [app] parameter */
if (args->app_count == 0) {
return event_session_allocation_error_handler(
session, ERROR_TYPE_MISSING_APP_PARAM, ser);
}
size = sizeof(*session) + strlen(session_id) + 1;
/* Instantiate the event session */
session = ao2_alloc(size, event_session_dtor);
if (!session) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
strncpy(session->session_id, session_id, size - sizeof(*session));
/* Instantiate the hash table for Stasis apps */
session->websocket_apps =
ast_str_container_alloc(APPS_NUM_BUCKETS);
if (!session->websocket_apps) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Instantiate the message queue */
if (AST_VECTOR_INIT(&session->message_queue, MESSAGES_INIT_SIZE)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Register the apps with Stasis */
for (i = 0; i < args->app_count; ++i) {
const char *app = args->app[i];
if (ast_strlen_zero(app)) {
return event_session_allocation_error_handler(
session, ERROR_TYPE_INVALID_APP_PARAM, ser);
}
if (ast_str_container_add(session->websocket_apps, app)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
if (stasis_app_register(app, stasis_app_message_handler, session)) {
ast_log(LOG_WARNING, "Stasis registration failed for application: '%s'\n", app);
return event_session_allocation_error_handler(
session, ERROR_TYPE_STASIS_REGISTRATION, ser);
}
}
/* Add the event session to the local registry */
if (!ao2_link(event_session_registry, session)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
return 0;
}
int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args)
int ast_ari_websocket_events_event_websocket_init(void)
{
int res = 0;
size_t i, j;
/* Try to instantiate the registry */
event_session_registry = ao2_container_alloc(EVENT_SESSION_NUM_BUCKETS,
event_session_hash,
event_session_compare);
ast_debug(3, "/events WebSocket attempted\n");
if (args->app_count == 0) {
ast_http_error(ser, 400, "Bad Request", "Missing param 'app'");
if (!event_session_registry) {
/* This is bad, bad. */
ast_log(LOG_WARNING,
"Failed to allocate the local registry for websocket applications\n");
return -1;
}
for (i = 0; i < args->app_count; ++i) {
if (ast_strlen_zero(args->app[i])) {
res = -1;
break;
}
res |= stasis_app_register(args->app[i], app_handler, NULL);
}
if (res) {
for (j = 0; j < i; ++j) {
stasis_app_unregister(args->app[j]);
}
ast_http_error(ser, 400, "Bad Request", "Invalid application provided in param 'app'.");
}
return res;
return 0;
}
void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *ws_session,
struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args)
int ast_ari_websocket_events_event_websocket_attempted(
struct ast_tcptls_session_instance *ser, struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args, const char *session_id)
{
RAII_VAR(struct event_session *, session, NULL, session_cleanup);
ast_debug(3, "/events WebSocket attempted\n");
/* Create the event session */
return event_session_alloc(ser, args, session_id);
}
void ast_ari_websocket_events_event_websocket_established(
struct ast_ari_websocket_session *ws_session, struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args)
{
RAII_VAR(struct event_session *, session, NULL, event_session_cleanup);
struct ast_json *msg;
int res;
size_t i;
const char *session_id;
ast_debug(3, "/events WebSocket connection\n");
ast_debug(3, "/events WebSocket established\n");
session = session_create(ws_session);
if (!session) {
ast_ari_websocket_session_write(ws_session, ast_ari_oom_json());
return;
}
ast_assert(ws_session != NULL);
res = 0;
for (i = 0; i < args->app_count; ++i) {
if (ast_strlen_zero(args->app[i])) {
continue;
}
res |= session_register_app(session, args->app[i]);
}
session_id = ast_ari_websocket_session_id(ws_session);
if (ao2_container_count(session->websocket_apps) == 0) {
RAII_VAR(struct ast_json *, msg, NULL, ast_json_unref);
/* Find the event_session and update its websocket */
session = ao2_find(event_session_registry, session_id, OBJ_SEARCH_KEY);
msg = ast_json_pack("{s: s, s: [s]}",
"type", "MissingParams",
"params", "app");
if (!msg) {
msg = ast_json_ref(ast_ari_oom_json());
}
ast_ari_websocket_session_write(session->ws_session, msg);
return;
}
if (res != 0) {
ast_ari_websocket_session_write(ws_session, ast_ari_oom_json());
return;
if (session) {
ao2_unlink(event_session_registry, session);
event_session_update_websocket(session, ws_session);
} else {
ast_log(LOG_WARNING,
"Failed to locate an event session for the provided websocket session\n");
}
/* We don't process any input, but we'll consume it waiting for EOF */
@ -309,4 +538,3 @@ void ast_ari_events_user_event(struct ast_variable *headers,
"Error processing request");
}
}

16
res/ari/resource_events.h
View File

@ -49,17 +49,27 @@ struct ast_ari_events_event_websocket_args {
char *app_parse;
};
/*!
* \brief WebSocket connection for events.
*
* \retval 0 success
* \retval -1 error
*/
int ast_ari_websocket_events_event_websocket_init(void);
/*!
* \brief WebSocket connection for events.
*
* \param ser HTTP TCP/TLS Server Session
* \param headers HTTP headers
* \param args Swagger parameters
* \param session_id The id of the current session.
*
* \retval 0 success
* \retval non-zero error
*/
int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args);
int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args, const char *session_id);
/*!
* \brief WebSocket connection for events.
@ -67,8 +77,10 @@ int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session
* \param session ARI WebSocket.
* \param headers HTTP headers.
* \param args Swagger parameters.
* \param session_id The id of the current session.
*/
void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *session, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args);
void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *session,
struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args);
/*! Argument struct for ast_ari_events_user_event() */
struct ast_ari_events_user_event_args {
/*! Event name */

9
res/res_ari_events.c
View File

@ -53,7 +53,8 @@ ASTERISK_REGISTER_FILE()
#define MAX_VALS 128
static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_session_instance *ser, struct ast_variable *get_params, struct ast_variable *headers)
static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_session_instance *ser,
struct ast_variable *get_params, struct ast_variable *headers, const char *session_id)
{
struct ast_ari_events_event_websocket_args args = {};
int res = 0;
@ -113,7 +114,7 @@ static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_sess
{}
}
res = ast_ari_websocket_events_event_websocket_attempted(ser, headers, &args);
res = ast_ari_websocket_events_event_websocket_attempted(ser, headers, &args, session_id);
fin: __attribute__((unused))
if (!response) {
@ -433,6 +434,10 @@ static int load_module(void)
int res = 0;
struct ast_websocket_protocol *protocol;
if (ast_ari_websocket_events_event_websocket_init() == -1) {
return AST_MODULE_LOAD_FAILURE;
}
events.ws_server = ast_websocket_server_create();
if (!events.ws_server) {
return AST_MODULE_LOAD_FAILURE;

44
res/res_http_websocket.c
View File

@ -38,6 +38,7 @@ ASTERISK_REGISTER_FILE()
#include "asterisk/file.h"
#include "asterisk/unaligned.h"
#include "asterisk/uri.h"
#include "asterisk/uuid.h"
#define AST_API_MODULE
#include "asterisk/http_websocket.h"
@ -74,18 +75,19 @@ ASTERISK_REGISTER_FILE()
/*! \brief Structure definition for session */
struct ast_websocket {
FILE *f; /*!< Pointer to the file instance used for writing and reading */
int fd; /*!< File descriptor for the session, only used for polling */
struct ast_sockaddr address; /*!< Address of the remote client */
enum ast_websocket_opcode opcode; /*!< Cached opcode for multi-frame messages */
size_t payload_len; /*!< Length of the payload */
char *payload; /*!< Pointer to the payload */
size_t reconstruct; /*!< Number of bytes before a reconstructed payload will be returned and a new one started */
int timeout; /*!< The timeout for operations on the socket */
unsigned int secure:1; /*!< Bit to indicate that the transport is secure */
unsigned int closing:1; /*!< Bit to indicate that the session is in the process of being closed */
unsigned int close_sent:1; /*!< Bit to indicate that the session close opcode has been sent and no further data will be sent */
struct websocket_client *client; /*!< Client object when connected as a client websocket */
FILE *f; /*!< Pointer to the file instance used for writing and reading */
int fd; /*!< File descriptor for the session, only used for polling */
struct ast_sockaddr address; /*!< Address of the remote client */
enum ast_websocket_opcode opcode; /*!< Cached opcode for multi-frame messages */
size_t payload_len; /*!< Length of the payload */
char *payload; /*!< Pointer to the payload */
size_t reconstruct; /*!< Number of bytes before a reconstructed payload will be returned and a new one started */
int timeout; /*!< The timeout for operations on the socket */
unsigned int secure:1; /*!< Bit to indicate that the transport is secure */
unsigned int closing:1; /*!< Bit to indicate that the session is in the process of being closed */
unsigned int close_sent:1; /*!< Bit to indicate that the session close opcode has been sent and no further data will be sent */
struct websocket_client *client; /*!< Client object when connected as a client websocket */
char session_id[AST_UUID_STR_LEN]; /*!< The identifier for the websocket session */
};
/*! \brief Hashing function for protocols */
@ -414,6 +416,12 @@ int AST_OPTIONAL_API_NAME(ast_websocket_set_timeout)(struct ast_websocket *sessi
return 0;
}
const char * AST_OPTIONAL_API_NAME(ast_websocket_session_id)(struct ast_websocket *session)
{
return session->session_id;
}
/* MAINTENANCE WARNING on ast_websocket_read()!
*
* We have to keep in mind during this function that the fact that session->fd seems ready
@ -764,7 +772,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_uri_cb)(struct ast_tcptls_session_instan
return 0;
}
if (!(session = ao2_alloc(sizeof(*session), session_destroy_fn))) {
if (!(session = ao2_alloc(sizeof(*session) + AST_UUID_STR_LEN + 1, session_destroy_fn))) {
ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted\n",
ast_sockaddr_stringify(&ser->remote_address));
websocket_bad_request(ser);
@ -773,8 +781,16 @@ int AST_OPTIONAL_API_NAME(ast_websocket_uri_cb)(struct ast_tcptls_session_instan
}
session->timeout = AST_DEFAULT_WEBSOCKET_WRITE_TIMEOUT;
/* Generate the session id */
if (!ast_uuid_generate_str(session->session_id, sizeof(session->session_id))) {
ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted - failed to generate a session id\n",
ast_sockaddr_stringify(&ser->remote_address));
ast_http_error(ser, 500, "Internal Server Error", "Allocation failed");
return 0;
}
if (protocol_handler->session_attempted
&& protocol_handler->session_attempted(ser, get_vars, headers)) {
&& protocol_handler->session_attempted(ser, get_vars, headers, session->session_id)) {
ast_debug(3, "WebSocket connection from '%s' rejected by protocol handler '%s'\n",
ast_sockaddr_stringify(&ser->remote_address), protocol_handler->name);
ao2_ref(protocol_handler, -1);

20
rest-api-templates/ari_resource.h.mustache
View File

@ -90,6 +90,18 @@ void ast_ari_{{c_name}}_{{c_nickname}}(struct ast_variable *headers, struct ast_
{{/is_req}}
{{#is_websocket}}
/*!
* \brief {{summary}}
{{#notes}}
*
* {{{notes}}}
{{/notes}}
*
* \retval 0 success
* \retval -1 error
*/
int ast_ari_websocket_{{c_name}}_{{c_nickname}}_init(void);
/*!
* \brief {{summary}}
{{#notes}}
@ -100,11 +112,13 @@ void ast_ari_{{c_name}}_{{c_nickname}}(struct ast_variable *headers, struct ast_
* \param ser HTTP TCP/TLS Server Session
* \param headers HTTP headers
* \param args Swagger parameters
* \param session_id The id of the current session.
*
* \retval 0 success
* \retval non-zero error
*/
int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_session_instance *ser, struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args);
int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args, const char *session_id);
/*!
* \brief {{summary}}
@ -116,8 +130,10 @@ int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_sess
* \param session ARI WebSocket.
* \param headers HTTP headers.
* \param args Swagger parameters.
* \param session_id The id of the current session.
*/
void ast_ari_websocket_{{c_name}}_{{c_nickname}}_established(struct ast_ari_websocket_session *session, struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args);
void ast_ari_websocket_{{c_name}}_{{c_nickname}}_established(struct ast_ari_websocket_session *session,
struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args);
{{/is_websocket}}
{{/operations}}
{{/apis}}

9
rest-api-templates/res_ari_resource.c.mustache
View File

@ -137,7 +137,8 @@ fin: __attribute__((unused))
}
{{/is_req}}
{{#is_websocket}}
static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_session_instance *ser, struct ast_variable *get_params, struct ast_variable *headers)
static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_session_instance *ser,
struct ast_variable *get_params, struct ast_variable *headers, const char *session_id)
{
struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {};
{{#has_parameters}}
@ -156,7 +157,7 @@ static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_s
{{> param_parsing}}
res = ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(ser, headers, &args);
res = ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(ser, headers, &args, session_id);
fin: __attribute__((unused))
if (!response) {
@ -255,6 +256,10 @@ static int load_module(void)
{{#has_websocket}}
struct ast_websocket_protocol *protocol;
if (ast_ari_websocket_{{c_name}}_{{c_nickname}}_init() == -1) {
return AST_MODULE_LOAD_FAILURE;
}
{{full_name}}.ws_server = ast_websocket_server_create();
if (!{{full_name}}.ws_server) {
return AST_MODULE_LOAD_FAILURE;