res_aeap: Add basic config skeleton and CLI commands.
Added support for a basic AEAP configuration read from aeap.conf. Also added 2 CLI commands for showing individual configurations as well as all of them: aeap show server <id> and aeap show servers. Only one configuration option is required at the moment, and that one is server_url. It must be a websocket URL. The other option, codecs, is optional and will be used over the codecs specified on the endpoint if provided. https://wiki.asterisk.org/wiki/pages/viewpage.action?pageId=45482453 Change-Id: I567ac5148c92b98d29d2ad83421b416b75ffdaa3
This commit is contained in:
Ben Ford
Friendly Automation
parent
44aef0449a
commit
45a1977de4
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@ -0,0 +1,15 @@
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;
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; This file is used by the res_aeap module to configure parameters
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; used for AEAP applications.
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;
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;[myserver]
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;
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; type must be "server".
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;type=server
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;
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; server_url must be a websocket URL (ws or wss).
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;server_url
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;
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; codecs is an optional list of codecs that will be used over the codecs
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; specified on an endpoint if this option is present.
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;codecs=ulaw,alaw,g722,opus
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@ -0,0 +1,298 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2021, Sangoma Technologies Corporation
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*
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* Ben Ford <bford@sangoma.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/module.h"
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#include "asterisk/sorcery.h"
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#include "asterisk/cli.h"
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#include "asterisk/format.h"
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#include "asterisk/format_cap.h"
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/*** DOCUMENTATION
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<configInfo name="res_aeap" language="en_US">
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<synopsis>Asterisk External Application Protocol (AEAP) module for Asterisk</synopsis>
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<configFile name="aeap.conf">
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<configObject name="server">
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<synopsis>AEAP server options</synopsis>
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<configOption name="type">
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<synopsis>Must be of type 'server'.</synopsis>
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</configOption>
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<configOption name="server_url">
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<synopsis>The URL of the server to connect to.</synopsis>
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</configOption>
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<configOption name="codecs">
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<synopsis>Optional media codec(s)</synopsis>
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<description><para>
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If this is specified, Asterisk will use this for codec related negotiations
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with the external application. Otherwise, Asterisk will default to using the
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codecs configured on the endpoint.
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</para></description>
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</configOption>
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</configObject>
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</configFile>
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</configInfo>
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***/
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/* Asterisk External Application Protocol sorcery object */
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static struct ast_sorcery *aeap_sorcery;
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struct aeap_server
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{
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SORCERY_OBJECT(details);
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AST_DECLARE_STRING_FIELDS(
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/*! The URL of the server to connect to */
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AST_STRING_FIELD(server_url);
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);
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/*! An optional list of codecs that will be used if provided */
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struct ast_format_cap *codecs;
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};
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static void aeap_server_destructor(void *obj)
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{
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struct aeap_server *cfg = obj;
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ast_string_field_free_memory(cfg);
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ao2_cleanup(cfg->codecs);
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}
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static void *aeap_server_alloc(const char *name)
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{
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struct aeap_server *cfg;
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cfg = ast_sorcery_generic_alloc(sizeof(*cfg), aeap_server_destructor);
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if (!cfg) {
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return NULL;
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}
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if (ast_string_field_init(cfg, 512)) {
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ao2_ref(cfg, -1);
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return NULL;
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}
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if (!(cfg->codecs = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
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ao2_ref(cfg, -1);
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return NULL;
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}
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return cfg;
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}
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static int aeap_server_apply(const struct ast_sorcery *sorcery, void *obj)
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{
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struct aeap_server *cfg = obj;
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if (ast_strlen_zero(cfg->server_url)) {
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ast_log(LOG_ERROR, "AEAP - Server URL must be present for server '%s'\n", ast_sorcery_object_get_id(cfg));
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return -1;
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}
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if (!ast_begins_with(cfg->server_url, "ws")) {
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ast_log(LOG_ERROR, "AEAP - Server URL must be ws or wss for server '%s'\n", ast_sorcery_object_get_id(cfg));
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return -1;
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}
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return 0;
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}
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static struct aeap_server *aeap_server_get(const char *id)
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{
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return ast_sorcery_retrieve_by_id(aeap_sorcery, "server", id);
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}
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static struct ao2_container *aeap_server_get_all(void)
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{
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return ast_sorcery_retrieve_by_fields(aeap_sorcery, "server",
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AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL);
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}
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static char *aeap_tab_complete_name(const char *word, struct ao2_container *container)
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{
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void *obj;
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struct ao2_iterator it;
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int wordlen = strlen(word);
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int ret;
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it = ao2_iterator_init(container, 0);
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while ((obj = ao2_iterator_next(&it))) {
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if (!strncasecmp(word, ast_sorcery_object_get_id(obj), wordlen)) {
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ret = ast_cli_completion_add(ast_strdup(ast_sorcery_object_get_id(obj)));
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if (ret) {
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ao2_ref(obj, -1);
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break;
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}
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}
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ao2_ref(obj, -1);
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}
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ao2_iterator_destroy(&it);
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return NULL;
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}
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static int aeap_cli_show(void *obj, void *arg, int flags)
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{
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struct ast_cli_args *a = arg;
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struct ast_variable *options;
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struct ast_variable *i;
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if (!obj) {
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ast_cli(a->fd, "No AEAP configuration found\n");
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return 0;
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}
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options = ast_variable_list_sort(ast_sorcery_objectset_create2(
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aeap_sorcery, obj, AST_HANDLER_ONLY_STRING));
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if (!options) {
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return 0;
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}
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ast_cli(a->fd, "%s: %s\n", ast_sorcery_object_get_type(obj),
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ast_sorcery_object_get_id(obj));
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for (i = options; i; i = i->next) {
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ast_cli(a->fd, "\t%s: %s\n", i->name, i->value);
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}
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ast_cli(a->fd, "\n");
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ast_variables_destroy(options);
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return 0;
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}
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static char *aeap_server_show(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct aeap_server *cfg;
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switch(cmd) {
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case CLI_INIT:
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e->command = "aeap show server";
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e->usage =
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"Usage: aeap show server <id>\n"
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" Show the AEAP settings for a given server\n";
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return NULL;
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case CLI_GENERATE:
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if (a->pos == 3) {
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return aeap_tab_complete_name(a->word, aeap_server_get_all());
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} else {
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return NULL;
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}
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}
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if (a->argc != 4) {
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return CLI_SHOWUSAGE;
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}
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cfg = aeap_server_get(a->argv[3]);
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aeap_cli_show(cfg, a, 0);
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ao2_cleanup(cfg);
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return CLI_SUCCESS;
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}
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static char *aeap_server_show_all(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct ao2_container *container;
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switch(cmd) {
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case CLI_INIT:
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e->command = "aeap show servers";
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e->usage =
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"Usage: aeap show servers\n"
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" Show all configured AEAP servers\n";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != 3) {
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return CLI_SHOWUSAGE;
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}
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container = aeap_server_get_all();
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if (!container || ao2_container_count(container) == 0) {
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ast_cli(a->fd, "No AEAP servers found\n");
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ao2_cleanup(container);
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return CLI_SUCCESS;
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}
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ao2_callback(container, OBJ_NODATA, aeap_cli_show, a);
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ao2_ref(container, -1);
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return CLI_SUCCESS;
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}
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static struct ast_cli_entry aeap_cli[] = {
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AST_CLI_DEFINE(aeap_server_show, "Show AEAP server configuration by id"),
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AST_CLI_DEFINE(aeap_server_show_all, "Show all AEAP server configurations"),
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};
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static int reload_module(void)
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{
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return 0;
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}
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static int unload_module(void)
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{
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ast_sorcery_unref(aeap_sorcery);
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aeap_sorcery = NULL;
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ast_cli_unregister_multiple(aeap_cli, ARRAY_LEN(aeap_cli));
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return 0;
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}
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static int load_module(void)
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{
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if (!(aeap_sorcery = ast_sorcery_open()))
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{
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ast_log(LOG_ERROR, "AEAP - failed to open sorcery\n");
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return AST_MODULE_LOAD_DECLINE;
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}
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ast_sorcery_apply_default(aeap_sorcery, "server", "config", "aeap.conf,criteria=type=server");
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if (ast_sorcery_object_register(aeap_sorcery, "server", aeap_server_alloc,
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NULL, aeap_server_apply)) {
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ast_log(LOG_ERROR, "AEAP - failed to register server sorcery object\n");
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return AST_MODULE_LOAD_DECLINE;
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}
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ast_sorcery_object_field_register(aeap_sorcery, "server", "type", "", OPT_NOOP_T, 0, 0);
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ast_sorcery_object_field_register(aeap_sorcery, "server", "server_url", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct aeap_server, server_url));
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ast_sorcery_object_field_register(aeap_sorcery, "server", "codecs", "", OPT_CODEC_T, 1, FLDSET(struct aeap_server, codecs));
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ast_sorcery_load(aeap_sorcery);
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ast_cli_register_multiple(aeap_cli, ARRAY_LEN(aeap_cli));
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER,
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"Asterisk External Application Protocol Module for Asterisk",
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.support_level = AST_MODULE_SUPPORT_CORE,
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.load = load_module,
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.unload = unload_module,
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.reload = reload_module,
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.load_pri = AST_MODPRI_CHANNEL_DEPEND,
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);
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