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kazoo_node.c
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kazoo_node.c
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2012, Anthony Minessale II <[email protected]>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <[email protected]>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <[email protected]>
* Andrew Thompson <[email protected]>
* Rob Charlton <[email protected]>
* Darren Schreiber <[email protected]>
* Mike Jerris <[email protected]>
* Tamas Cseke <[email protected]>
*
*
* handle_msg.c -- handle messages received from erlang nodes
*
*/
#include "mod_kazoo.h"
struct api_command_struct_s {
char *cmd;
char *arg;
ei_node_t *ei_node;
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
erlang_pid pid;
switch_memory_pool_t *pool;
};
typedef struct api_command_struct_s api_command_struct_t;
static char *REQUEST_ATOMS[] = {
"noevents",
"exit",
"link",
"nixevent",
"sendevent",
"sendmsg",
"commands",
"command",
"bind",
"getpid",
"version",
"bgapi",
"api",
"event",
"fetch_reply",
"config",
"bgapi4",
"api4",
"json_api"
};
typedef enum {
REQUEST_NOEVENTS,
REQUEST_EXIT,
REQUEST_LINK,
REQUEST_NIXEVENT,
REQUEST_SENDEVENT,
REQUEST_SENDMSG,
REQUEST_COMMANDS,
REQUEST_COMMAND,
REQUEST_BIND,
REQUEST_GETPID,
REQUEST_VERSION,
REQUEST_BGAPI,
REQUEST_API,
REQUEST_EVENT,
REQUEST_FETCH_REPLY,
REQUEST_CONFIG,
REQUEST_BGAPI4,
REQUEST_API4,
REQUEST_JSON_API,
REQUEST_MAX
} request_atoms_t;
static switch_status_t find_request(char *atom, int *request) {
int i;
for (i = 0; i < REQUEST_MAX; i++) {
if(!strncmp(atom, REQUEST_ATOMS[i], MAXATOMLEN)) {
*request = i;
return SWITCH_STATUS_SUCCESS;
}
}
return SWITCH_STATUS_FALSE;
}
static void destroy_node_handler(ei_node_t *ei_node) {
int pending = 0;
void *pop;
switch_memory_pool_t *pool = ei_node->pool;
switch_clear_flag(ei_node, LFLAG_RUNNING);
/* wait for pending bgapi requests to complete */
while ((pending = switch_atomic_read(&ei_node->pending_bgapi))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Waiting for %d pending bgapi requests to complete\n", pending);
switch_yield(500000);
}
/* wait for receive handlers to complete */
while ((pending = switch_atomic_read(&ei_node->receive_handlers))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Waiting for %d receive handlers to complete\n", pending);
switch_yield(500000);
}
switch_mutex_lock(ei_node->event_streams_mutex);
remove_event_streams(&ei_node->event_streams);
switch_mutex_unlock(ei_node->event_streams_mutex);
remove_xml_clients(ei_node);
while (switch_queue_trypop(ei_node->received_msgs, &pop) == SWITCH_STATUS_SUCCESS) {
ei_received_msg_t *received_msg = (ei_received_msg_t *) pop;
ei_x_free(&received_msg->buf);
switch_safe_free(received_msg);
}
while (switch_queue_trypop(ei_node->send_msgs, &pop) == SWITCH_STATUS_SUCCESS) {
ei_send_msg_t *send_msg = (ei_send_msg_t *) pop;
ei_x_free(&send_msg->buf);
switch_safe_free(send_msg);
}
close_socketfd(&ei_node->nodefd);
switch_mutex_destroy(ei_node->event_streams_mutex);
switch_core_destroy_memory_pool(&pool);
}
static switch_status_t add_to_ei_nodes(ei_node_t *this_ei_node) {
switch_thread_rwlock_wrlock(kazoo_globals.ei_nodes_lock);
if (!kazoo_globals.ei_nodes) {
kazoo_globals.ei_nodes = this_ei_node;
} else {
this_ei_node->next = kazoo_globals.ei_nodes;
kazoo_globals.ei_nodes = this_ei_node;
}
switch_thread_rwlock_unlock(kazoo_globals.ei_nodes_lock);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t remove_from_ei_nodes(ei_node_t *this_ei_node) {
ei_node_t *ei_node, *prev = NULL;
int found = 0;
switch_thread_rwlock_wrlock(kazoo_globals.ei_nodes_lock);
/* try to find the event bindings list for the requestor */
ei_node = kazoo_globals.ei_nodes;
while(ei_node != NULL) {
if (ei_node == this_ei_node) {
found = 1;
break;
}
prev = ei_node;
ei_node = ei_node->next;
}
if (found) {
if (!prev) {
kazoo_globals.ei_nodes = this_ei_node->next;
} else {
prev->next = ei_node->next;
}
}
switch_thread_rwlock_unlock(kazoo_globals.ei_nodes_lock);
return SWITCH_STATUS_SUCCESS;
}
void kazoo_event_add_unique_header_string(switch_event_t *event, switch_stack_t stack, const char *header_name, const char *data) {
if(!switch_event_get_header_ptr(event, header_name))
switch_event_add_header_string(event, stack, header_name, data);
}
SWITCH_DECLARE(switch_status_t) kazoo_api_execute(const char *cmd, const char *arg, switch_core_session_t *session, switch_stream_handle_t *stream, char** reply)
{
switch_api_interface_t *api;
switch_status_t status;
char *arg_used;
char *cmd_used;
int fire_event = 0;
char *arg_expanded = NULL;
switch_event_t* evt;
switch_assert(stream != NULL);
switch_assert(stream->data != NULL);
switch_assert(stream->write_function != NULL);
switch_event_create(&evt, SWITCH_EVENT_GENERAL);
arg_expanded = switch_event_expand_headers(evt, arg);
switch_event_destroy(&evt);
cmd_used = (char *) cmd;
arg_used = arg_expanded;
if (!stream->param_event) {
switch_event_create(&stream->param_event, SWITCH_EVENT_API);
fire_event = 1;
}
if (stream->param_event) {
if (cmd_used && *cmd_used) {
switch_event_add_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Command", cmd_used);
}
if (arg_used && *arg_used) {
switch_event_add_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Command-Argument", arg_used);
}
if (arg_expanded && *arg_expanded) {
switch_event_add_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Command-Argument-Expanded", arg_expanded);
}
}
if (cmd_used && (api = switch_loadable_module_get_api_interface(cmd_used)) != 0) {
if ((status = api->function(arg_used, session, stream)) != SWITCH_STATUS_SUCCESS) {
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Result", "error");
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Error", stream->data);
} else {
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Result", "success");
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Output", stream->data);
}
UNPROTECT_INTERFACE(api);
} else {
status = SWITCH_STATUS_FALSE;
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Result", "error");
kazoo_event_add_unique_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "API-Error", "invalid command");
}
if (stream->param_event && fire_event) {
switch_event_fire(&stream->param_event);
}
if (cmd_used != cmd) {
switch_safe_free(cmd_used);
}
if (arg_used != arg_expanded) {
switch_safe_free(arg_used);
}
if (arg_expanded != arg) {
switch_safe_free(arg_expanded);
}
return status;
}
static switch_status_t api_exec_stream(char *cmd, char *arg, switch_stream_handle_t *stream, char **reply) {
switch_status_t status = SWITCH_STATUS_FALSE;
if (kazoo_api_execute(cmd, arg, NULL, stream, reply) != SWITCH_STATUS_SUCCESS) {
if(stream->data && strlen(stream->data)) {
*reply = strdup(stream->data);
status = SWITCH_STATUS_FALSE;
} else {
*reply = switch_mprintf("%s: Command not found", cmd);
status = SWITCH_STATUS_NOTFOUND;
}
} else if (!stream->data || !strlen(stream->data)) {
*reply = switch_mprintf("%s: Command returned no output", cmd);
status = SWITCH_STATUS_SUCCESS;
} else {
*reply = strdup(stream->data);
status = SWITCH_STATUS_SUCCESS;
}
return status;
}
static switch_status_t api_exec(char *cmd, char *arg, char **reply) {
switch_stream_handle_t stream = { 0 };
switch_status_t status = SWITCH_STATUS_FALSE;
SWITCH_STANDARD_STREAM(stream);
status = api_exec_stream(cmd, arg, &stream, reply);
switch_safe_free(stream.data);
return status;
}
static void *SWITCH_THREAD_FUNC bgapi3_exec(switch_thread_t *thread, void *obj) {
api_command_struct_t *acs = (api_command_struct_t *) obj;
switch_memory_pool_t *pool = acs->pool;
char *reply = NULL;
char *cmd = acs->cmd;
char *arg = acs->arg;
ei_node_t *ei_node = acs->ei_node;
ei_send_msg_t *send_msg;
if(!switch_test_flag(ei_node, LFLAG_RUNNING) || !switch_test_flag(&kazoo_globals, LFLAG_RUNNING)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Ignoring command while shuting down\n");
switch_atomic_dec(&ei_node->pending_bgapi);
return NULL;
}
switch_malloc(send_msg, sizeof(*send_msg));
memcpy(&send_msg->pid, &acs->pid, sizeof(erlang_pid));
ei_x_new_with_version(&send_msg->buf);
ei_x_encode_tuple_header(&send_msg->buf, 3);
if (api_exec(cmd, arg, &reply) == SWITCH_STATUS_SUCCESS) {
ei_x_encode_atom(&send_msg->buf, "bgok");
} else {
ei_x_encode_atom(&send_msg->buf, "bgerror");
}
_ei_x_encode_string(&send_msg->buf, acs->uuid_str);
_ei_x_encode_string(&send_msg->buf, reply);
if (switch_queue_trypush(ei_node->send_msgs, send_msg) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to send bgapi response %s to %s <%d.%d.%d>\n"
,acs->uuid_str
,acs->pid.node
,acs->pid.creation
,acs->pid.num
,acs->pid.serial);
ei_x_free(&send_msg->buf);
switch_safe_free(send_msg);
}
switch_atomic_dec(&ei_node->pending_bgapi);
switch_safe_free(reply);
switch_safe_free(acs->arg);
switch_core_destroy_memory_pool(&pool);
return NULL;
}
static void *SWITCH_THREAD_FUNC bgapi4_exec(switch_thread_t *thread, void *obj) {
api_command_struct_t *acs = (api_command_struct_t *) obj;
switch_memory_pool_t *pool = acs->pool;
char *reply = NULL;
char *cmd = acs->cmd;
char *arg = acs->arg;
ei_node_t *ei_node = acs->ei_node;
ei_send_msg_t *send_msg;
switch_stream_handle_t stream = { 0 };
if(!switch_test_flag(ei_node, LFLAG_RUNNING) || !switch_test_flag(&kazoo_globals, LFLAG_RUNNING)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Ignoring command while shuting down\n");
switch_atomic_dec(&ei_node->pending_bgapi);
return NULL;
}
SWITCH_STANDARD_STREAM(stream);
switch_event_create(&stream.param_event, SWITCH_EVENT_API);
switch_malloc(send_msg, sizeof(*send_msg));
memcpy(&send_msg->pid, &acs->pid, sizeof(erlang_pid));
ei_x_new_with_version(&send_msg->buf);
ei_x_encode_tuple_header(&send_msg->buf, (stream.param_event ? 4 : 3));
if (api_exec_stream(cmd, arg, &stream, &reply) == SWITCH_STATUS_SUCCESS) {
ei_x_encode_atom(&send_msg->buf, "bgok");
} else {
ei_x_encode_atom(&send_msg->buf, "bgerror");
}
_ei_x_encode_string(&send_msg->buf, acs->uuid_str);
_ei_x_encode_string(&send_msg->buf, reply);
if (stream.param_event) {
ei_encode_switch_event_headers_2(&send_msg->buf, stream.param_event, 0);
}
if (switch_queue_trypush(ei_node->send_msgs, send_msg) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to send bgapi response %s to %s <%d.%d.%d>\n"
,acs->uuid_str
,acs->pid.node
,acs->pid.creation
,acs->pid.num
,acs->pid.serial);
ei_x_free(&send_msg->buf);
switch_safe_free(send_msg);
}
switch_atomic_dec(&ei_node->pending_bgapi);
if (stream.param_event) {
switch_event_fire(&stream.param_event);
}
switch_safe_free(reply);
switch_safe_free(acs->arg);
switch_core_destroy_memory_pool(&pool);
switch_safe_free(stream.data);
return NULL;
}
static void log_sendmsg_request(char *uuid, switch_event_t *event)
{
char *cmd = switch_event_get_header(event, "call-command");
unsigned long cmd_hash;
switch_ssize_t hlen = -1;
unsigned long CMD_EXECUTE = switch_hashfunc_default("execute", &hlen);
unsigned long CMD_XFEREXT = switch_hashfunc_default("xferext", &hlen);
if (zstr(cmd)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "log|%s|invalid \n", uuid);
DUMP_EVENT(event);
return;
}
cmd_hash = switch_hashfunc_default(cmd, &hlen);
if (cmd_hash == CMD_EXECUTE) {
char *app_name = switch_event_get_header(event, "execute-app-name");
char *app_arg = switch_event_get_header(event, "execute-app-arg");
if(app_name) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "log|%s|executing %s %s \n", uuid, app_name, switch_str_nil(app_arg));
}
} else if (cmd_hash == CMD_XFEREXT) {
switch_event_header_t *hp;
for (hp = event->headers; hp; hp = hp->next) {
char *app_name;
char *app_arg;
if (!strcasecmp(hp->name, "application")) {
app_name = strdup(hp->value);
app_arg = strchr(app_name, ' ');
if (app_arg) {
*app_arg++ = '\0';
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "log|%s|building xferext extension: %s %s\n", uuid, app_name, app_arg);
switch_safe_free(app_name);
}
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "log|%s|transfered call to xferext extension\n", uuid);
}
}
static switch_status_t build_event(switch_event_t *event, ei_x_buff * buf) {
int propslist_length, arity;
int n=0;
if(!event) {
return SWITCH_STATUS_FALSE;
}
if (ei_decode_list_header(buf->buff, &buf->index, &propslist_length)) {
return SWITCH_STATUS_FALSE;
}
while (!ei_decode_tuple_header(buf->buff, &buf->index, &arity) && n < propslist_length) {
char key[1024];
char *value;
if (arity != 2) {
return SWITCH_STATUS_FALSE;
}
if (ei_decode_string_or_binary_limited(buf->buff, &buf->index, sizeof(key), key)) {
return SWITCH_STATUS_FALSE;
}
if (ei_decode_string_or_binary(buf->buff, &buf->index, &value)) {
return SWITCH_STATUS_FALSE;
}
if (!strcmp(key, "body")) {
switch_safe_free(event->body);
event->body = value;
} else {
if(!strcasecmp(key, "Call-ID")) {
switch_core_session_t *session = NULL;
if(!zstr(value)) {
if ((session = switch_core_session_locate(value)) != NULL) {
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_channel_event_set_data(channel, event);
switch_core_session_rwunlock(session);
}
}
}
switch_event_add_header_string_nodup(event, SWITCH_STACK_BOTTOM, key, value);
}
n++;
}
ei_skip_term(buf->buff, &buf->index);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t erlang_response_badarg(ei_x_buff * rbuf) {
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "error");
ei_x_encode_atom(rbuf, "badarg");
}
return SWITCH_STATUS_GENERR;
}
static switch_status_t erlang_response_baduuid(ei_x_buff * rbuf) {
if (rbuf) {
ei_x_format_wo_ver(rbuf, "{~a,~a}", "error", "baduuid");
}
return SWITCH_STATUS_NOTFOUND;
}
static switch_status_t erlang_response_notimplemented(ei_x_buff * rbuf) {
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "error");
ei_x_encode_atom(rbuf, "not_implemented");
}
return SWITCH_STATUS_NOTFOUND;
}
static switch_status_t erlang_response_ok(ei_x_buff *rbuf) {
if (rbuf) {
ei_x_encode_atom(rbuf, "ok");
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t erlang_response_ok_uuid(ei_x_buff *rbuf, const char * uuid) {
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "ok");
ei_x_encode_binary(rbuf, uuid, strlen(uuid));
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t handle_request_noevents(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
ei_event_stream_t *event_stream;
switch_mutex_lock(ei_node->event_streams_mutex);
if ((event_stream = find_event_stream(ei_node->event_streams, pid))) {
remove_event_bindings(event_stream);
}
switch_mutex_unlock(ei_node->event_streams_mutex);
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_exit(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
switch_clear_flag(ei_node, LFLAG_RUNNING);
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_link(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
ei_link(ei_node, ei_self(&kazoo_globals.ei_cnode), pid);
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_nixevent(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
char event_name[MAXATOMLEN + 1];
switch_event_types_t event_type;
ei_event_stream_t *event_stream;
int custom = 0, length = 0;
int i;
if (ei_decode_list_header(buf->buff, &buf->index, &length)
|| length == 0) {
return erlang_response_badarg(rbuf);
}
switch_mutex_lock(ei_node->event_streams_mutex);
if (!(event_stream = find_event_stream(ei_node->event_streams, pid))) {
switch_mutex_unlock(ei_node->event_streams_mutex);
return erlang_response_ok(rbuf);
}
for (i = 1; i <= length; i++) {
if (ei_decode_atom_safe(buf->buff, &buf->index, event_name)) {
switch_mutex_unlock(ei_node->event_streams_mutex);
return erlang_response_badarg(rbuf);
}
if (custom) {
remove_event_binding(event_stream, SWITCH_EVENT_CUSTOM, event_name);
} else if (switch_name_event(event_name, &event_type) == SWITCH_STATUS_SUCCESS) {
switch (event_type) {
case SWITCH_EVENT_CUSTOM:
custom++;
break;
case SWITCH_EVENT_ALL:
{
switch_event_types_t type;
for (type = 0; type < SWITCH_EVENT_ALL; type++) {
if(type != SWITCH_EVENT_CUSTOM) {
remove_event_binding(event_stream, type, NULL);
}
}
break;
}
default:
remove_event_binding(event_stream, event_type, NULL);
}
} else {
switch_mutex_unlock(ei_node->event_streams_mutex);
return erlang_response_badarg(rbuf);
}
}
switch_mutex_unlock(ei_node->event_streams_mutex);
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_sendevent(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
char event_name[MAXATOMLEN + 1];
char subclass_name[MAXATOMLEN + 1];
switch_event_types_t event_type;
switch_event_t *event = NULL;
if (ei_decode_atom_safe(buf->buff, &buf->index, event_name)
|| switch_name_event(event_name, &event_type) != SWITCH_STATUS_SUCCESS)
{
return erlang_response_badarg(rbuf);
}
if (!strncasecmp(event_name, "CUSTOM", MAXATOMLEN)) {
if(ei_decode_atom(buf->buff, &buf->index, subclass_name)) {
return erlang_response_badarg(rbuf);
}
switch_event_create_subclass(&event, event_type, subclass_name);
} else {
switch_event_create(&event, event_type);
}
if (build_event(event, buf) == SWITCH_STATUS_SUCCESS) {
switch_event_fire(&event);
return erlang_response_ok(rbuf);
}
if(event) {
switch_event_destroy(&event);
}
return erlang_response_badarg(rbuf);
}
static switch_status_t handle_request_command(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
switch_core_session_t *session;
switch_event_t *event = NULL;
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
switch_uuid_t cmd_uuid;
char cmd_uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
if (ei_decode_string_or_binary_limited(buf->buff, &buf->index, sizeof(uuid_str), uuid_str)) {
return erlang_response_badarg(rbuf);
}
if (zstr_buf(uuid_str) || !(session = switch_core_session_locate(uuid_str))) {
return erlang_response_baduuid(rbuf);
}
switch_uuid_get(&cmd_uuid);
switch_uuid_format(cmd_uuid_str, &cmd_uuid);
switch_event_create(&event, SWITCH_EVENT_COMMAND);
if (build_event(event, buf) != SWITCH_STATUS_SUCCESS) {
switch_core_session_rwunlock(session);
return erlang_response_badarg(rbuf);
}
log_sendmsg_request(uuid_str, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "event-uuid", cmd_uuid_str);
switch_core_session_queue_private_event(session, &event, SWITCH_FALSE);
switch_core_session_rwunlock(session);
return erlang_response_ok_uuid(rbuf, cmd_uuid_str);
}
static switch_status_t handle_request_commands(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
switch_core_session_t *session;
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
int propslist_length, n;
switch_uuid_t cmd_uuid;
char cmd_uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
if (ei_decode_string_or_binary_limited(buf->buff, &buf->index, sizeof(uuid_str), uuid_str)) {
return erlang_response_badarg(rbuf);
}
if (zstr_buf(uuid_str) || !(session = switch_core_session_locate(uuid_str))) {
return erlang_response_baduuid(rbuf);
}
switch_uuid_get(&cmd_uuid);
switch_uuid_format(cmd_uuid_str, &cmd_uuid);
if (ei_decode_list_header(buf->buff, &buf->index, &propslist_length)) {
switch_core_session_rwunlock(session);
return SWITCH_STATUS_FALSE;
}
for(n = 0; n < propslist_length; n++) {
switch_event_t *event = NULL;
switch_event_create(&event, SWITCH_EVENT_COMMAND);
if (build_event(event, buf) != SWITCH_STATUS_SUCCESS) {
switch_core_session_rwunlock(session);
return erlang_response_badarg(rbuf);
}
log_sendmsg_request(uuid_str, event);
if(n == (propslist_length - 1)) {
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "event-uuid", cmd_uuid_str);
} else {
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "event-uuid", "null");
// switch_event_del_header_val(event, "event-uuid-name", NULL);
}
switch_core_session_queue_private_event(session, &event, SWITCH_FALSE);
}
switch_core_session_rwunlock(session);
return erlang_response_ok_uuid(rbuf, cmd_uuid_str);
}
static switch_status_t handle_request_sendmsg(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
switch_core_session_t *session;
switch_event_t *event = NULL;
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
if (ei_decode_string_or_binary_limited(buf->buff, &buf->index, sizeof(uuid_str), uuid_str)) {
return erlang_response_badarg(rbuf);
}
if (zstr_buf(uuid_str) || !(session = switch_core_session_locate(uuid_str))) {
return erlang_response_baduuid(rbuf);
}
switch_event_create(&event, SWITCH_EVENT_SEND_MESSAGE);
if (build_event(event, buf) != SWITCH_STATUS_SUCCESS) {
switch_core_session_rwunlock(session);
return erlang_response_badarg(rbuf);
}
log_sendmsg_request(uuid_str, event);
switch_core_session_queue_private_event(session, &event, SWITCH_FALSE);
switch_core_session_rwunlock(session);
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_config(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
fetch_config();
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_bind(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
char section_str[MAXATOMLEN + 1];
switch_xml_section_t section;
if (ei_decode_atom_safe(buf->buff, &buf->index, section_str)
|| !(section = switch_xml_parse_section_string(section_str))) {
return erlang_response_badarg(rbuf);
}
switch(section) {
case SWITCH_XML_SECTION_CONFIG:
add_fetch_handler(ei_node, pid, kazoo_globals.config_fetch_binding);
if(!kazoo_globals.config_fetched) {
kazoo_globals.config_fetched = 1;
fetch_config();
}
break;
case SWITCH_XML_SECTION_DIRECTORY:
add_fetch_handler(ei_node, pid, kazoo_globals.directory_fetch_binding);
break;
case SWITCH_XML_SECTION_DIALPLAN:
add_fetch_handler(ei_node, pid, kazoo_globals.dialplan_fetch_binding);
break;
case SWITCH_XML_SECTION_CHANNELS:
add_fetch_handler(ei_node, pid, kazoo_globals.channels_fetch_binding);
break;
case SWITCH_XML_SECTION_LANGUAGES:
add_fetch_handler(ei_node, pid, kazoo_globals.languages_fetch_binding);
break;
case SWITCH_XML_SECTION_CHATPLAN:
add_fetch_handler(ei_node, pid, kazoo_globals.chatplan_fetch_binding);
break;
default:
return erlang_response_badarg(rbuf);
}
return erlang_response_ok(rbuf);
}
static switch_status_t handle_request_getpid(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "ok");
ei_x_encode_pid(rbuf, ei_self(&kazoo_globals.ei_cnode));
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t handle_request_version(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "ok");
_ei_x_encode_string(rbuf, VERSION);
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t handle_request_bgapi(switch_thread_start_t func, ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
api_command_struct_t *acs = NULL;
switch_memory_pool_t *pool;
switch_thread_t *thread;
switch_threadattr_t *thd_attr = NULL;
switch_uuid_t uuid;
char cmd[MAXATOMLEN + 1];
if (ei_decode_atom_safe(buf->buff, &buf->index, cmd)) {
return erlang_response_badarg(rbuf);
}
switch_core_new_memory_pool(&pool);
acs = switch_core_alloc(pool, sizeof(*acs));
if (ei_decode_string_or_binary(buf->buff, &buf->index, &acs->arg)) {
switch_core_destroy_memory_pool(&pool);
return erlang_response_badarg(rbuf);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "bgexec: %s(%s)\n", cmd, acs->arg);
acs->pool = pool;
acs->ei_node = ei_node;
acs->cmd = switch_core_strdup(pool, cmd);
memcpy(&acs->pid, pid, sizeof(erlang_pid));
switch_threadattr_create(&thd_attr, acs->pool);
switch_threadattr_detach_set(thd_attr, 1);
switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
switch_uuid_get(&uuid);
switch_uuid_format(acs->uuid_str, &uuid);
switch_thread_create(&thread, thd_attr, func, acs, acs->pool);
switch_atomic_inc(&ei_node->pending_bgapi);
if (rbuf) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "ok");
_ei_x_encode_string(rbuf, acs->uuid_str);
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t handle_request_bgapi3(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
return handle_request_bgapi(bgapi3_exec, ei_node, pid, buf, rbuf);
}
static switch_status_t handle_request_bgapi4(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
return handle_request_bgapi(bgapi4_exec, ei_node, pid, buf, rbuf);
}
static switch_status_t handle_request_api4(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf) {
char cmd[MAXATOMLEN + 1];
char *arg;
switch_stream_handle_t stream = { 0 };
SWITCH_STANDARD_STREAM(stream);
switch_event_create(&stream.param_event, SWITCH_EVENT_API);
if (ei_decode_atom_safe(buf->buff, &buf->index, cmd)) {
return erlang_response_badarg(rbuf);
}
if (ei_decode_string_or_binary(buf->buff, &buf->index, &arg)) {
return erlang_response_badarg(rbuf);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "exec: %s(%s)\n", cmd, arg);
if (rbuf) {
char *reply;
switch_status_t status;
status = api_exec_stream(cmd, arg, &stream, &reply);
if (status == SWITCH_STATUS_SUCCESS) {
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "ok");
} else {
ei_x_encode_tuple_header(rbuf, (stream.param_event ? 3 : 2));
ei_x_encode_atom(rbuf, "error");
}
_ei_x_encode_string(rbuf, reply);
if (stream.param_event && status != SWITCH_STATUS_SUCCESS) {
ei_encode_switch_event_headers(rbuf, stream.param_event);
}
switch_safe_free(reply);
}
if (stream.param_event) {
switch_event_fire(&stream.param_event);
}
switch_safe_free(arg);
switch_safe_free(stream.data);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t handle_request_json_api(ei_node_t *ei_node, erlang_pid *pid, ei_x_buff *buf, ei_x_buff *rbuf)
{
char *arg;
cJSON *jcmd = NULL;
switch_core_session_t *session = NULL;
const char *uuid = NULL;
char *response = NULL;
const char *parse_end = NULL;
switch_status_t status = SWITCH_STATUS_SUCCESS;
if (ei_decode_string_or_binary(buf->buff, &buf->index, &arg)) {
return erlang_response_badarg(rbuf);
}
jcmd = cJSON_ParseWithOpts(arg, &parse_end, 0);
if (!jcmd) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "json api error: %s\n", parse_end);
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "error");
ei_x_encode_tuple_header(rbuf, 2);
ei_x_encode_atom(rbuf, "parse_error");
_ei_x_encode_string(rbuf, parse_end);
switch_safe_free(arg);
return status;
}
if ((uuid = cJSON_GetObjectCstr(jcmd, "uuid"))) {
if (!(session = switch_core_session_locate(uuid))) {
cJSON_Delete(jcmd);
switch_safe_free(arg);
return erlang_response_baduuid(rbuf);
}
}
status = switch_json_api_execute(jcmd, session, NULL);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "json api (%i): %s\n", status , arg);
response = cJSON_PrintUnformatted(jcmd);
ei_x_encode_tuple_header(rbuf, 2);
if (status == SWITCH_STATUS_SUCCESS) {