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core/ari/pjsip: Add refer mechanism
This change adds support for refers that are not session based. It includes a refer implementation for the PJSIP technology which results in out-of-dialog REFERs being sent to a PJSIP endpoint. These can be triggered using the new ARI endpoint `/endpoints/refer`. Resolves: #71 UserNote: There is a new ARI endpoint `/endpoints/refer` for referring an endpoint to some URI or endpoint.
This commit is contained in:
Maximilian Fridrich
committed by
asterisk-org-access-app[bot]
asterisk-org-access-app[bot]
parent
d16046e41f
commit
51a7b18038
@@ -188,6 +188,102 @@ static void ast_ari_endpoints_send_message_cb(
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}
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#endif /* AST_DEVMODE */
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fin: __attribute__((unused))
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return;
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}
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int ast_ari_endpoints_refer_parse_body(
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struct ast_json *body,
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struct ast_ari_endpoints_refer_args *args)
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{
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struct ast_json *field;
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/* Parse query parameters out of it */
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field = ast_json_object_get(body, "to");
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if (field) {
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args->to = ast_json_string_get(field);
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}
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field = ast_json_object_get(body, "from");
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if (field) {
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args->from = ast_json_string_get(field);
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}
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field = ast_json_object_get(body, "refer_to");
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if (field) {
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args->refer_to = ast_json_string_get(field);
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}
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field = ast_json_object_get(body, "to_self");
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if (field) {
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args->to_self = ast_json_is_true(field);
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}
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return 0;
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}
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/*!
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* \brief Parameter parsing callback for /endpoints/refer.
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* \param ser TCP/TLS session object
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* \param get_params GET parameters in the HTTP request.
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* \param path_vars Path variables extracted from the request.
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* \param headers HTTP headers.
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* \param body
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* \param[out] response Response to the HTTP request.
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*/
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static void ast_ari_endpoints_refer_cb(
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struct ast_tcptls_session_instance *ser,
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struct ast_variable *get_params, struct ast_variable *path_vars,
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struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
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{
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struct ast_ari_endpoints_refer_args args = {};
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struct ast_variable *i;
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#if defined(AST_DEVMODE)
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int is_valid;
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int code;
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#endif /* AST_DEVMODE */
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for (i = get_params; i; i = i->next) {
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if (strcmp(i->name, "to") == 0) {
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args.to = (i->value);
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} else
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if (strcmp(i->name, "from") == 0) {
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args.from = (i->value);
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} else
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if (strcmp(i->name, "refer_to") == 0) {
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args.refer_to = (i->value);
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} else
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if (strcmp(i->name, "to_self") == 0) {
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args.to_self = ast_true(i->value);
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} else
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{}
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}
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args.variables = body;
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ast_ari_endpoints_refer(headers, &args, response);
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#if defined(AST_DEVMODE)
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code = response->response_code;
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switch (code) {
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case 0: /* Implementation is still a stub, or the code wasn't set */
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is_valid = response->message == NULL;
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break;
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case 500: /* Internal Server Error */
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case 501: /* Not Implemented */
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case 400: /* Invalid parameters for referring. */
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case 404: /* Endpoint not found */
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is_valid = 1;
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break;
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default:
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if (200 <= code && code <= 299) {
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is_valid = ast_ari_validate_void(
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response->message);
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} else {
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ast_log(LOG_ERROR, "Invalid error response %d for /endpoints/refer\n", code);
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is_valid = 0;
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}
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}
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if (!is_valid) {
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ast_log(LOG_ERROR, "Response validation failed for /endpoints/refer\n");
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ast_ari_response_error(response, 500,
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"Internal Server Error", "Response validation failed");
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}
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#endif /* AST_DEVMODE */
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fin: __attribute__((unused))
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return;
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}
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@@ -403,6 +499,104 @@ static void ast_ari_endpoints_send_message_to_endpoint_cb(
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}
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#endif /* AST_DEVMODE */
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fin: __attribute__((unused))
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return;
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}
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int ast_ari_endpoints_refer_to_endpoint_parse_body(
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struct ast_json *body,
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struct ast_ari_endpoints_refer_to_endpoint_args *args)
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{
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struct ast_json *field;
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/* Parse query parameters out of it */
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field = ast_json_object_get(body, "from");
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if (field) {
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args->from = ast_json_string_get(field);
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}
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field = ast_json_object_get(body, "refer_to");
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if (field) {
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args->refer_to = ast_json_string_get(field);
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}
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field = ast_json_object_get(body, "to_self");
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if (field) {
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args->to_self = ast_json_is_true(field);
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}
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return 0;
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}
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/*!
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* \brief Parameter parsing callback for /endpoints/{tech}/{resource}/refer.
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* \param ser TCP/TLS session object
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* \param get_params GET parameters in the HTTP request.
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* \param path_vars Path variables extracted from the request.
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* \param headers HTTP headers.
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* \param body
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* \param[out] response Response to the HTTP request.
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*/
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static void ast_ari_endpoints_refer_to_endpoint_cb(
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struct ast_tcptls_session_instance *ser,
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struct ast_variable *get_params, struct ast_variable *path_vars,
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struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
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{
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struct ast_ari_endpoints_refer_to_endpoint_args args = {};
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struct ast_variable *i;
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#if defined(AST_DEVMODE)
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int is_valid;
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int code;
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#endif /* AST_DEVMODE */
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for (i = get_params; i; i = i->next) {
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if (strcmp(i->name, "from") == 0) {
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args.from = (i->value);
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} else
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if (strcmp(i->name, "refer_to") == 0) {
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args.refer_to = (i->value);
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} else
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if (strcmp(i->name, "to_self") == 0) {
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args.to_self = ast_true(i->value);
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} else
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{}
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}
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for (i = path_vars; i; i = i->next) {
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if (strcmp(i->name, "tech") == 0) {
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args.tech = (i->value);
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} else
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if (strcmp(i->name, "resource") == 0) {
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args.resource = (i->value);
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} else
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{}
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}
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args.variables = body;
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ast_ari_endpoints_refer_to_endpoint(headers, &args, response);
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#if defined(AST_DEVMODE)
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code = response->response_code;
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switch (code) {
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case 0: /* Implementation is still a stub, or the code wasn't set */
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is_valid = response->message == NULL;
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break;
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case 500: /* Internal Server Error */
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case 501: /* Not Implemented */
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case 400: /* Invalid parameters for referring. */
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case 404: /* Endpoint not found */
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is_valid = 1;
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break;
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default:
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if (200 <= code && code <= 299) {
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is_valid = ast_ari_validate_void(
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response->message);
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} else {
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ast_log(LOG_ERROR, "Invalid error response %d for /endpoints/{tech}/{resource}/refer\n", code);
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is_valid = 0;
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}
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}
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if (!is_valid) {
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ast_log(LOG_ERROR, "Response validation failed for /endpoints/{tech}/{resource}/refer\n");
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ast_ari_response_error(response, 500,
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"Internal Server Error", "Response validation failed");
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}
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#endif /* AST_DEVMODE */
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fin: __attribute__((unused))
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return;
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}
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@@ -417,6 +611,15 @@ static struct stasis_rest_handlers endpoints_sendMessage = {
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.children = { }
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};
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/*! \brief REST handler for /api-docs/endpoints.json */
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static struct stasis_rest_handlers endpoints_refer = {
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.path_segment = "refer",
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.callbacks = {
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[AST_HTTP_POST] = ast_ari_endpoints_refer_cb,
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},
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.num_children = 0,
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.children = { }
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};
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/*! \brief REST handler for /api-docs/endpoints.json */
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static struct stasis_rest_handlers endpoints_tech_resource_sendMessage = {
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.path_segment = "sendMessage",
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.callbacks = {
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@@ -426,14 +629,23 @@ static struct stasis_rest_handlers endpoints_tech_resource_sendMessage = {
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.children = { }
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};
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/*! \brief REST handler for /api-docs/endpoints.json */
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static struct stasis_rest_handlers endpoints_tech_resource_refer = {
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.path_segment = "refer",
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.callbacks = {
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[AST_HTTP_POST] = ast_ari_endpoints_refer_to_endpoint_cb,
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},
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.num_children = 0,
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.children = { }
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};
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/*! \brief REST handler for /api-docs/endpoints.json */
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static struct stasis_rest_handlers endpoints_tech_resource = {
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.path_segment = "resource",
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.is_wildcard = 1,
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.callbacks = {
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[AST_HTTP_GET] = ast_ari_endpoints_get_cb,
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},
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.num_children = 1,
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.children = { &endpoints_tech_resource_sendMessage, }
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.num_children = 2,
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.children = { &endpoints_tech_resource_sendMessage,&endpoints_tech_resource_refer, }
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};
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/*! \brief REST handler for /api-docs/endpoints.json */
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static struct stasis_rest_handlers endpoints_tech = {
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@@ -451,8 +663,8 @@ static struct stasis_rest_handlers endpoints = {
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.callbacks = {
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[AST_HTTP_GET] = ast_ari_endpoints_list_cb,
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},
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.num_children = 2,
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.children = { &endpoints_sendMessage,&endpoints_tech, }
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.num_children = 3,
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.children = { &endpoints_sendMessage,&endpoints_refer,&endpoints_tech, }
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};
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static int unload_module(void)
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