res_ari_resource.c.mustache

{{#api_declaration}}
/*
 * Asterisk -- An open source telephony toolkit.
 *
 * {{{copyright}}}
 *
 * {{{author}}}
{{! Template Copyright
 * Copyright (C) 2013, Digium, Inc.
 *
 * David M. Lee, II <dlee@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.
 */

{{! Template for rendering the res_ module for an HTTP resource. }}
/*
{{> do-not-edit}}
 * This file is generated by a mustache template. Please see the original
 * template in rest-api-templates/res_ari_resource.c.mustache
 */

/*! \file
 *
 * \brief {{{description}}}
 *
 * \author {{{author}}}
 */

/*** MODULEINFO
	<depend type="module">res_ari</depend>
	<depend type="module">res_ari_model</depend>
	<depend type="module">res_stasis</depend>
{{#requires_modules}}
	<depend type="module">{{.}}</depend>
{{/requires_modules}}
	<support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/app.h"
#include "asterisk/module.h"
#include "asterisk/stasis_app.h"
#include "ari/resource_{{c_name}}.h"
#if defined(AST_DEVMODE)
#include "ari/ari_model_validators.h"
#endif
{{#has_websocket}}
{{! Only include http_websocket if necessary. Otherwise we'll do a lot of
 *  unnecessary optional_api intialization, which makes optional_api harder
 *  to debug
 }}
#include "asterisk/http_websocket.h"
{{/has_websocket}}

#define MAX_VALS 128

{{#apis}}
{{#operations}}
{{#is_req}}
{{> body_parsing}}
/*!
 * \brief Parameter parsing callback for {{path}}.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_{{c_name}}_{{c_nickname}}_cb(
	struct ast_tcptls_session_instance *ser,
	struct ast_variable *get_params, struct ast_variable *path_vars,
	struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
	struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {};
{{#has_parameters}}
	struct ast_variable *i;
{{/has_parameters}}
#if defined(AST_DEVMODE)
	int is_valid;
	int code;
#endif /* AST_DEVMODE */

{{> param_parsing}}
{{^is_binary_response}}
	ast_ari_{{c_name}}_{{c_nickname}}(headers, &args, response);
{{/is_binary_response}}
{{#is_binary_response}}
	ast_ari_{{c_name}}_{{c_nickname}}(ser, headers, &args, response);
{{/is_binary_response}}
#if defined(AST_DEVMODE)
	code = response->response_code;

	switch (code) {
	case 0: /* Implementation is still a stub, or the code wasn't set */
		is_valid = response->message == NULL;
		break;
	case 500: /* Internal Server Error */
	case 501: /* Not Implemented */
{{#error_responses}}
	case {{code}}: /* {{{reason}}} */
{{/error_responses}}
		is_valid = 1;
		break;
	default:
		if (200 <= code && code <= 299) {
{{#response_class}}
{{#is_list}}
			is_valid = ast_ari_validate_list(response->message,
				ast_ari_validate_{{c_singular_name}}_fn());
{{/is_list}}
{{^is_list}}
{{^is_binary_response}}
			is_valid = ast_ari_validate_{{c_name}}(
				response->message);
{{/is_binary_response}}
{{#is_binary_response}}
			/* No validation on a raw binary response */
			is_valid = 1;
{{/is_binary_response}}
{{/is_list}}
{{/response_class}}
		} else {
			ast_log(LOG_ERROR, "Invalid error response %d for {{path}}\n", code);
			is_valid = 0;
		}
	}

	if (!is_valid) {
		ast_log(LOG_ERROR, "Response validation failed for {{path}}\n");
		ast_ari_response_error(response, 500,
			"Internal Server Error", "Response validation failed");
	}
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
{{> param_cleanup}}
	return;
}
{{/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, const char *session_id)
{
	struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {};
{{#has_parameters}}
	int res = 0;
	RAII_VAR(struct ast_ari_response *, response, NULL, ast_free);
	struct ast_variable *i;
{{/has_parameters}}

{{#has_parameters}}
	response = ast_calloc(1, sizeof(*response));
	if (!response) {
		ast_log(LOG_ERROR, "Failed to create response.\n");
		goto fin;
	}
{{/has_parameters}}

{{> param_parsing}}

	res = ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(ser, headers, &args, session_id);

fin: __attribute__((unused))
	if (!response) {
		ast_http_error(ser, 500, "Server Error", "Memory allocation error");
		res = -1;
	} else if (response->response_code != 0) {
		/* Param parsing failure */
		RAII_VAR(char *, msg, NULL, ast_json_free);
		if (response->message) {
			msg = ast_json_dump_string(response->message);
		} else {
			ast_log(LOG_ERROR, "Missing response message\n");
		}

		if (msg) {
			ast_http_error(ser, response->response_code, response->response_text, msg);
		}
		res = -1;
	}
{{> param_cleanup}}
{{#has_parameters}}
	return res;
{{/has_parameters}}
}

static void ast_ari_{{c_name}}_{{c_nickname}}_ws_established_cb(struct ast_websocket *ws_session,
	struct ast_variable *get_params, struct ast_variable *headers)
{
	struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {};
{{#has_parameters}}
	RAII_VAR(struct ast_ari_response *, response, NULL, ast_free);
	struct ast_variable *i;
{{/has_parameters}}
	RAII_VAR(struct ast_websocket *, s, ws_session, ast_websocket_unref);
	RAII_VAR(struct ast_ari_websocket_session *, session, NULL, ao2_cleanup);
{{#has_path_parameters}}
	/* TODO: It's not immediately obvious how to pass path params through
	 * the websocket code to this callback. Not needed right now, so we'll
	 * just punt. */
	struct ast_variable *path_vars = NULL;
{{/has_path_parameters}}

{{#has_parameters}}
	response = ast_calloc(1, sizeof(*response));
	if (!response) {
		ast_log(LOG_ERROR, "Failed to create response.\n");
		goto fin;
	}
{{/has_parameters}}

#if defined(AST_DEVMODE)
	session = ast_ari_websocket_session_create(ws_session,
		ast_ari_validate_{{response_class.c_name}}_fn());
#else
	session = ast_ari_websocket_session_create(ws_session, NULL);
#endif
	if (!session) {
		ast_log(LOG_ERROR, "Failed to create ARI session\n");
		goto fin;
	}

{{> param_parsing}}

	ast_ari_websocket_{{c_name}}_{{c_nickname}}_established(session, headers, &args);

fin: __attribute__((unused))
	if (response && response->response_code != 0) {
		/* Param parsing failure */
		RAII_VAR(char *, msg, NULL, ast_json_free);
		if (response->message) {
			msg = ast_json_dump_string(response->message);
		} else {
			ast_log(LOG_ERROR, "Missing response message\n");
		}
		if (msg) {
			ast_websocket_write(ws_session,
				AST_WEBSOCKET_OPCODE_TEXT, msg,	strlen(msg));
		}
	}
{{> param_cleanup}}
}
{{/is_websocket}}
{{/operations}}
{{/apis}}

{{! The rest_handler partial expands to the tree of stasis_rest_handlers }}
{{#root_path}}
{{> rest_handler}}
{{/root_path}}

static int unload_module(void)
{
	ast_ari_remove_handler(&{{root_full_name}});
{{#apis}}
{{#has_websocket}}
	ao2_cleanup({{full_name}}.ws_server);
	{{full_name}}.ws_server = NULL;
	ast_ari_websocket_events_event_websocket_dtor();
{{/has_websocket}}
{{/apis}}
	return 0;
}

static int load_module(void)
{
	int res = 0;

{{#apis}}
{{#operations}}
{{#is_websocket}}
	struct ast_websocket_protocol *protocol;

	if (ast_ari_websocket_{{c_name}}_{{c_nickname}}_init() == -1) {
		return AST_MODULE_LOAD_DECLINE;
	}

	{{full_name}}.ws_server = ast_websocket_server_create();
	if (!{{full_name}}.ws_server) {
		ast_ari_websocket_events_event_websocket_dtor();
		return AST_MODULE_LOAD_DECLINE;
	}

	protocol = ast_websocket_sub_protocol_alloc("{{websocket_protocol}}");
	if (!protocol) {
		ao2_ref({{full_name}}.ws_server, -1);
		{{full_name}}.ws_server = NULL;
		ast_ari_websocket_events_event_websocket_dtor();
		return AST_MODULE_LOAD_DECLINE;
	}
	protocol->session_attempted = ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb;
	protocol->session_established = ast_ari_{{c_name}}_{{c_nickname}}_ws_established_cb;
	res |= ast_websocket_server_add_protocol2({{full_name}}.ws_server, protocol);
{{/is_websocket}}
{{/operations}}
{{/apis}}

	res |= ast_ari_add_handler(&{{root_full_name}});
	if (res) {
		unload_module();
		return AST_MODULE_LOAD_DECLINE;
	}

	return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "RESTful API module - {{{description}}}",
	.support_level = AST_MODULE_SUPPORT_CORE,
	.load = load_module,
	.unload = unload_module,
	.requires = "res_ari,res_ari_model,res_stasis{{#requires_modules}},{{.}}{{/requires_modules}}",
);
{{/api_declaration}}