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doubango/tinySIP/src/dialogs/tsip_dialog_options.c

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/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/
/**@file tsip_dialog_options.c
* @brief SIP dialog OPTIONS as per RFC 3261 section 11.
*
* @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
*
*/
#include "tinysip/dialogs/tsip_dialog_options.h"
#include "tinysip/parsers/tsip_parser_uri.h"
#include "tinysip/api/tsip_api_options.h"
#include "tinysip/headers/tsip_header_Dummy.h"
#include "tinysip/headers/tsip_header_Min_Expires.h"
#include "tinysip/transactions/tsip_transac_layer.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
#include "tsk_time.h"
#define DEBUG_STATE_MACHINE 1
#define TSIP_DIALOG_OPTIONS_SIGNAL(self, type, code, phrase, options) \
tsip_options_event_signal(type, TSIP_DIALOG(self)->ss, code, phrase, options)
/* ======================== internal functions ======================== */
static int send_OPTIONS(tsip_dialog_options_t *self);
static int send_response(tsip_dialog_options_t *self, short status, const char* phrase, const tsip_request_t *request);
static int tsip_dialog_options_OnTerminated(tsip_dialog_options_t *self);
/* ======================== transitions ======================== */
static int tsip_dialog_options_Started_2_Sending_X_sendOPTIONS(va_list *app);
static int tsip_dialog_options_Started_2_Receiving_X_recvOPTIONS(va_list *app);
static int tsip_dialog_options_Sending_2_Sending_X_1xx(va_list *app);
static int tsip_dialog_options_Sending_2_Terminated_X_2xx(va_list *app);
static int tsip_dialog_options_Sending_2_Sending_X_401_407_421_494(va_list *app);
static int tsip_dialog_options_Sending_2_Terminated_X_300_to_699(va_list *app);
static int tsip_dialog_options_Sending_2_Terminated_X_cancel(va_list *app);
static int tsip_dialog_options_Receiving_2_Terminated_X_accept(va_list *app);
static int tsip_dialog_options_Receiving_2_Terminated_X_reject(va_list *app);
static int tsip_dialog_options_Any_2_Terminated_X_transportError(va_list *app);
static int tsip_dialog_options_Any_2_Terminated_X_Error(va_list *app);
/* ======================== conds ======================== */
/* ======================== actions ======================== */
typedef enum _fsm_action_e {
_fsm_action_sendOPTIONS = tsip_atype_options_send,
_fsm_action_accept = tsip_atype_accept,
_fsm_action_reject = tsip_atype_reject,
_fsm_action_cancel = tsip_atype_cancel,
_fsm_action_shutdown = tsip_atype_shutdown,
_fsm_action_transporterror = tsip_atype_transport_error,
_fsm_action_receiveOPTIONS = 0xFF,
_fsm_action_1xx,
_fsm_action_2xx,
_fsm_action_401_407_421_494,
_fsm_action_300_to_699,
_fsm_action_error,
}
_fsm_action_t;
/* ======================== states ======================== */
typedef enum _fsm_state_e {
_fsm_state_Started,
_fsm_state_Sending,
_fsm_state_Receiving,
_fsm_state_Terminated
}
_fsm_state_t;
int tsip_dialog_options_event_callback(const tsip_dialog_options_t *self, tsip_dialog_event_type_t type, const tsip_message_t *msg)
{
int ret = -1;
switch(type) {
case tsip_dialog_i_msg: {
if(msg) {
if(TSIP_MESSAGE_IS_RESPONSE(msg)) {
const tsip_action_t* action = tsip_dialog_keep_action(TSIP_DIALOG(self), msg) ? TSIP_DIALOG(self)->curr_action : tsk_null;
if(TSIP_RESPONSE_IS_1XX(msg)) {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_1xx, msg, action);
}
else if(TSIP_RESPONSE_IS_2XX(msg)) {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_2xx, msg, action);
}
else if(TSIP_RESPONSE_CODE(msg) == 401 || TSIP_RESPONSE_CODE(msg) == 407 || TSIP_RESPONSE_CODE(msg) == 421 || TSIP_RESPONSE_CODE(msg) == 494) {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_401_407_421_494, msg, action);
}
else if(TSIP_RESPONSE_IS_3456(msg)) {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_300_to_699, msg, action);
}
else { /* should never happen */
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_error, msg, action);
}
}
else if (TSIP_REQUEST_IS_OPTIONS(msg)) { /* have been checked by dialog layer...but */
// REQUEST ==> Incoming OPTIONS
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_receiveOPTIONS, msg, tsk_null);
}
}
break;
}
case tsip_dialog_canceled: {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_cancel, msg, tsk_null);
break;
}
case tsip_dialog_terminated:
case tsip_dialog_timedout:
case tsip_dialog_error:
case tsip_dialog_transport_error: {
ret = tsip_dialog_fsm_act(TSIP_DIALOG(self), _fsm_action_transporterror, msg, tsk_null);
break;
}
default:
break;
}
return ret;
}
tsip_dialog_options_t* tsip_dialog_options_create(const tsip_ssession_handle_t* ss)
{
return tsk_object_new(tsip_dialog_options_def_t, ss);
}
int tsip_dialog_options_init(tsip_dialog_options_t *self)
{
//const tsk_param_t* param;
/* Initialize the state machine. */
tsk_fsm_set(TSIP_DIALOG_GET_FSM(self),
/*=======================
* === Started ===
*/
// Started -> (send) -> Sending
TSK_FSM_ADD_ALWAYS(_fsm_state_Started, _fsm_action_sendOPTIONS, _fsm_state_Sending, tsip_dialog_options_Started_2_Sending_X_sendOPTIONS, "tsip_dialog_options_Started_2_Sending_X_sendOPTIONS"),
// Started -> (receive) -> Receiving
TSK_FSM_ADD_ALWAYS(_fsm_state_Started, _fsm_action_receiveOPTIONS, _fsm_state_Receiving, tsip_dialog_options_Started_2_Receiving_X_recvOPTIONS, "tsip_dialog_options_Started_2_Receiving_X_recvOPTIONS"),
// Started -> (Any) -> Started
TSK_FSM_ADD_ALWAYS_NOTHING(_fsm_state_Started, "tsip_dialog_options_Started_2_Started_X_any"),
/*=======================
* === Sending ===
*/
// Sending -> (1xx) -> Sending
TSK_FSM_ADD_ALWAYS(_fsm_state_Sending, _fsm_action_1xx, _fsm_state_Sending, tsip_dialog_options_Sending_2_Sending_X_1xx, "tsip_dialog_options_Sending_2_Sending_X_1xx"),
// Sending -> (2xx) -> Terminated
TSK_FSM_ADD_ALWAYS(_fsm_state_Sending, _fsm_action_2xx, _fsm_state_Terminated, tsip_dialog_options_Sending_2_Terminated_X_2xx, "tsip_dialog_options_Sending_2_Terminated_X_2xx"),
// Sending -> (401/407/421/494) -> Sending
TSK_FSM_ADD_ALWAYS(_fsm_state_Sending, _fsm_action_401_407_421_494, _fsm_state_Sending, tsip_dialog_options_Sending_2_Sending_X_401_407_421_494, "tsip_dialog_options_Sending_2_Sending_X_401_407_421_494"),
// Sending -> (300_to_699) -> Terminated
TSK_FSM_ADD_ALWAYS(_fsm_state_Sending, _fsm_action_300_to_699, _fsm_state_Terminated, tsip_dialog_options_Sending_2_Terminated_X_300_to_699, "tsip_dialog_options_Sending_2_Terminated_X_300_to_699"),
// Sending -> (cancel) -> Terminated
TSK_FSM_ADD_ALWAYS(_fsm_state_Sending, _fsm_action_cancel, _fsm_state_Terminated, tsip_dialog_options_Sending_2_Terminated_X_cancel, "tsip_dialog_options_Sending_2_Terminated_X_cancel"),
// Sending -> (Any) -> Sending
TSK_FSM_ADD_ALWAYS_NOTHING(_fsm_state_Sending, "tsip_dialog_options_Sending_2_Sending_X_any"),
/*=======================
* === Receiving ===
*/
// Receiving -> (accept) -> Terminated
TSK_FSM_ADD_ALWAYS(_fsm_state_Receiving, _fsm_action_accept, _fsm_state_Terminated, tsip_dialog_options_Receiving_2_Terminated_X_accept, "tsip_dialog_options_Receiving_2_Terminated_X_accept"),
// Receiving -> (rejected) -> Terminated
TSK_FSM_ADD_ALWAYS(_fsm_state_Receiving, _fsm_action_reject, _fsm_state_Terminated, tsip_dialog_options_Receiving_2_Terminated_X_reject, "tsip_dialog_options_Receiving_2_Terminated_X_reject"),
// Receiving -> (Any) -> Receiving
TSK_FSM_ADD_ALWAYS_NOTHING(_fsm_state_Receiving, "tsip_dialog_options_Receiving_2_Receiving_X_any"),
/*=======================
* === Any ===
*/
// Any -> (transport error) -> Terminated
TSK_FSM_ADD_ALWAYS(tsk_fsm_state_any, _fsm_action_transporterror, _fsm_state_Terminated, tsip_dialog_options_Any_2_Terminated_X_transportError, "tsip_dialog_options_Any_2_Terminated_X_transportError"),
// Any -> (transport error) -> Terminated
TSK_FSM_ADD_ALWAYS(tsk_fsm_state_any, _fsm_action_error, _fsm_state_Terminated, tsip_dialog_options_Any_2_Terminated_X_Error, "tsip_dialog_options_Any_2_Terminated_X_Error"),
TSK_FSM_ADD_NULL());
TSIP_DIALOG(self)->callback = TSIP_DIALOG_EVENT_CALLBACK_F(tsip_dialog_options_event_callback);
return 0;
}
//--------------------------------------------------------
// == STATE MACHINE BEGIN ==
//--------------------------------------------------------
/* Started -> (sendOPTIONS) -> Sending
*/
int tsip_dialog_options_Started_2_Sending_X_sendOPTIONS(va_list *app)
{
tsip_dialog_options_t *self;
self = va_arg(*app, tsip_dialog_options_t *);
TSIP_DIALOG(self)->running = tsk_true;
/* alert the user */
TSIP_DIALOG_SIGNAL(self, tsip_event_code_dialog_connecting, "Dialog connecting");
return send_OPTIONS(self);
}
/* Started -> (recvOPTIONS) -> Receiving
*/
int tsip_dialog_options_Started_2_Receiving_X_recvOPTIONS(va_list *app)
{
tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);
const tsip_request_t *request = va_arg(*app, const tsip_request_t *);
/* Update last incoming MESSAGE */
TSK_OBJECT_SAFE_FREE(self->last_iMessage);
self->last_iMessage = tsk_object_ref((void*)request);
/* Alert the user. */
TSIP_DIALOG_OPTIONS_SIGNAL(self, tsip_i_options,
tsip_event_code_dialog_request_incoming, "Incoming Request.", request);
return 0;
}
/* Sending -> (1xx) -> Sending
*/
int tsip_dialog_options_Sending_2_Sending_X_1xx(va_list *app)
{
/*tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);*/
/*const tsip_response_t *response = va_arg(*app, const tsip_response_t *);*/
return 0;
}
/* Sending -> (2xx) -> Sending
*/
int tsip_dialog_options_Sending_2_Terminated_X_2xx(va_list *app)
{
tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);
const tsip_response_t *response = va_arg(*app, const tsip_response_t *);
/* Alert the user. */
TSIP_DIALOG_OPTIONS_SIGNAL(self, tsip_ao_options,
TSIP_RESPONSE_CODE(response), TSIP_RESPONSE_PHRASE(response), response);
/* Reset curr action */
tsip_dialog_set_curr_action(TSIP_DIALOG(self), tsk_null);
return 0;
}
/* Sending -> (401/407/421/494) -> Sending
*/
int tsip_dialog_options_Sending_2_Sending_X_401_407_421_494(va_list *app)
{
tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);
const tsip_response_t *response = va_arg(*app, const tsip_response_t *);
int ret;
if((ret = tsip_dialog_update(TSIP_DIALOG(self), response))) {
/* Alert the user. */
TSIP_DIALOG_OPTIONS_SIGNAL(self, tsip_ao_options,
TSIP_RESPONSE_CODE(response), TSIP_RESPONSE_PHRASE(response), response);
return ret;
}
return send_OPTIONS(self);
}
/* Sending -> (300 to 699) -> Terminated
*/
int tsip_dialog_options_Sending_2_Terminated_X_300_to_699(va_list *app)
{
tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);
const tsip_response_t *response = va_arg(*app, const tsip_response_t *);
/* Alert the user. */
TSIP_DIALOG_OPTIONS_SIGNAL(self, tsip_ao_options,
TSIP_RESPONSE_CODE(response), TSIP_RESPONSE_PHRASE(response), response);
return 0;
}
/* Sending -> (cancel) -> Terminated
*/
int tsip_dialog_options_Sending_2_Terminated_X_cancel(va_list *app)
{
int ret;
tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);
/* const tsip_message_t *message = va_arg(*app, const tsip_message_t *); */
/* RFC 3261 - 9.1 Client Behavior
A CANCEL request SHOULD NOT be sent to cancel a request other than INVITE.
*/
/* Cancel all transactions associated to this dialog (will also be done when the dialog is destroyed (worth nothing)) */
ret = tsip_transac_layer_cancel_by_dialog(TSIP_DIALOG_GET_STACK(self)->layer_transac, TSIP_DIALOG(self));
TSIP_DIALOG_SIGNAL(self, tsip_event_code_dialog_request_cancelled, "OPTIONS cancelled");
return ret;
}
/* Receiving -> (accept) -> Terminated
*/
int tsip_dialog_options_Receiving_2_Terminated_X_accept(va_list *app)
{
tsip_dialog_options_t *self;
const tsip_action_t* action;
self = va_arg(*app, tsip_dialog_options_t *);
va_arg(*app, tsip_message_t *);
action = va_arg(*app, const tsip_action_t *);
if(!self->last_iMessage) {
TSK_DEBUG_ERROR("There is non OPTIONS to accept()");
/* Not an error ...but do not update current action */
}
else {
tsip_response_t *response;
int ret;
/* curr_action is only used for outgoing requests */
/* tsip_dialog_set_curr_action(TSIP_DIALOG(self), action); */
/* send 200 OK */
if((response = tsip_dialog_response_new(TSIP_DIALOG(self), 200, "OK", self->last_iMessage))) {
tsip_dialog_apply_action(response, action); /* apply action params to "this" response */
if((ret = tsip_dialog_response_send(TSIP_DIALOG(self), response))) {
TSK_DEBUG_ERROR("Failed to send SIP response.");
TSK_OBJECT_SAFE_FREE(response);
return ret;
}
TSK_OBJECT_SAFE_FREE(response);
}
else {
TSK_DEBUG_ERROR("Failed to create SIP response.");
return -1;
}
}
return 0;
}
/* Receiving -> (reject) -> Terminated
*/
int tsip_dialog_options_Receiving_2_Terminated_X_reject(va_list *app)
{
tsip_dialog_options_t *self;
const tsip_action_t* action;
self = va_arg(*app, tsip_dialog_options_t *);
va_arg(*app, tsip_message_t *);
action = va_arg(*app, const tsip_action_t *);
if(!self->last_iMessage) {
TSK_DEBUG_ERROR("There is non OPTIONS to reject()");
/* Not an error ...but do not update current action */
}
else {
tsip_response_t *response;
int ret;
/* curr_action is only used for outgoing requests */
/* tsip_dialog_set_curr_action(TSIP_DIALOG(self), action); */
/* send 486 Rejected */
if((response = tsip_dialog_response_new(TSIP_DIALOG(self), 486, "Rejected", self->last_iMessage))) {
tsip_dialog_apply_action(response, action); /* apply action params to "this" response */
if((ret = tsip_dialog_response_send(TSIP_DIALOG(self), response))) {
TSK_DEBUG_ERROR("Failed to send SIP response.");
TSK_OBJECT_SAFE_FREE(response);
return ret;
}
TSK_OBJECT_SAFE_FREE(response);
}
else {
TSK_DEBUG_ERROR("Failed to create SIP response.");
return -1;
}
}
return 0;
}
/* Any -> (transport error) -> Terminated
*/
int tsip_dialog_options_Any_2_Terminated_X_transportError(va_list *app)
{
/*tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);*/
/*const tsip_message_t *message = va_arg(*app, const tsip_message_t *);*/
return 0;
}
/* Any -> (error) -> Terminated
*/
int tsip_dialog_options_Any_2_Terminated_X_Error(va_list *app)
{
/*tsip_dialog_options_t *self = va_arg(*app, tsip_dialog_options_t *);*/
/*const tsip_message_t *message = va_arg(*app, const tsip_message_t *);*/
return 0;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// == STATE MACHINE END ==
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int send_OPTIONS(tsip_dialog_options_t *self)
{
tsip_request_t* request = tsk_null;
int ret = -1;
if(!self) {
return -1;
}
if(!(request = tsip_dialog_request_new(TSIP_DIALOG(self), "OPTIONS"))) {
return -2;
}
/* action parameters and payload*/
if(TSIP_DIALOG(self)->curr_action) {
const tsk_list_item_t* item;
tsk_list_foreach(item, TSIP_DIALOG(self)->curr_action->headers) {
TSIP_MESSAGE_ADD_HEADER(request, TSIP_HEADER_DUMMY_VA_ARGS(TSK_PARAM(item->data)->name, TSK_PARAM(item->data)->value));
}
if(TSIP_DIALOG(self)->curr_action->payload) {
tsip_message_add_content(request, tsk_null, TSK_BUFFER_DATA(TSIP_DIALOG(self)->curr_action->payload), TSK_BUFFER_SIZE(TSIP_DIALOG(self)->curr_action->payload));
}
}
ret = tsip_dialog_request_send(TSIP_DIALOG(self), request);
TSK_OBJECT_SAFE_FREE(request);
return ret;
}
int send_response(tsip_dialog_options_t *self, short status, const char* phrase, const tsip_request_t *request)
{
tsip_response_t *response;
int ret = -1;
response = tsip_dialog_response_new(TSIP_DIALOG(self), status, phrase, request);
if(response) {
if(response->To && !response->To->tag) {
tsk_istr_t tag;
tsk_strrandom(&tag);
response->To->tag = tsk_strdup(tag);
}
ret = tsip_dialog_response_send(TSIP_DIALOG(self), response);
TSK_OBJECT_SAFE_FREE(response);
}
return ret;
}
int tsip_dialog_options_OnTerminated(tsip_dialog_options_t *self)
{
TSK_DEBUG_INFO("=== OPTIONS Dialog terminated ===");
/* alert user */
TSIP_DIALOG_SIGNAL(self, tsip_event_code_dialog_terminated,
TSIP_DIALOG(self)->last_error.phrase ? TSIP_DIALOG(self)->last_error.phrase : "Dialog terminated");
/* Remove from the dialog layer. */
return tsip_dialog_remove(TSIP_DIALOG(self));
}
//========================================================
// SIP dialog OPTIONS object definition
//
static tsk_object_t* tsip_dialog_options_ctor(tsk_object_t * self, va_list * app)
{
tsip_dialog_options_t *dialog = self;
if(dialog) {
tsip_ssession_handle_t *ss = va_arg(*app, tsip_ssession_handle_t *);
/* Initialize base class */
tsip_dialog_init(TSIP_DIALOG(self), tsip_dialog_OPTIONS, tsk_null, ss, _fsm_state_Started, _fsm_state_Terminated);
/* FSM */
TSIP_DIALOG_GET_FSM(self)->debug = DEBUG_STATE_MACHINE;
tsk_fsm_set_callback_terminated(TSIP_DIALOG_GET_FSM(self), TSK_FSM_ONTERMINATED_F(tsip_dialog_options_OnTerminated), (const void*)dialog);
/* Initialize the class itself */
tsip_dialog_options_init(self);
}
return self;
}
static tsk_object_t* tsip_dialog_options_dtor(tsk_object_t * self)
{
tsip_dialog_options_t *dialog = self;
if(dialog) {
/* DeInitialize base class (will cancel all transactions) */
tsip_dialog_deinit(TSIP_DIALOG(self));
/* DeInitialize self */
TSK_OBJECT_SAFE_FREE(dialog->last_iMessage);
TSK_DEBUG_INFO("*** OPTIONS Dialog destroyed ***");
}
return self;
}
static int tsip_dialog_options_cmp(const tsk_object_t *obj1, const tsk_object_t *obj2)
{
return tsip_dialog_cmp(obj1, obj2);
}
static const tsk_object_def_t tsip_dialog_options_def_s = {
sizeof(tsip_dialog_options_t),
tsip_dialog_options_ctor,
tsip_dialog_options_dtor,
tsip_dialog_options_cmp,
};
const tsk_object_def_t *tsip_dialog_options_def_t = &tsip_dialog_options_def_s;
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