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doubango/tinySIP/src/tsip.c

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/*
* Copyright (C) 2010-2011 Mamadou Diop.
* Copyright (C) 2012 Doubango Telecom <http://doubango.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.c
* @brief SIP (RFC 3261) and 3GPP IMS/LTE (TS 24.229) implementation.
*/
#include "tsip.h"
#include "tinysip/tsip_event.h"
#include "tinysip/parsers/tsip_parser_uri.h"
#include "tinysip/transactions/tsip_transac_layer.h"
#include "tinysip/dialogs/tsip_dialog_layer.h"
#include "tinysip/transports/tsip_transport_layer.h"
#include "tinysip/api/tsip_api_register.h"
#include "tinysip/api/tsip_api_subscribe.h"
#include "tinysip/api/tsip_api_message.h"
#include "tinymedia/tmedia_defaults.h"
#include "tnet.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
#include "tsk_time.h"
#include <stdarg.h>
#include <string.h>
static void* TSK_STDCALL run(void* self);
/* For tests:
* http://www.voip-info.org/wiki/view/PROTOS+Test-Suite
* http://tools.ietf.org/html/rfc4475
* http://portal.etsi.org/docbox/EC_Files/EC_Files/ts_10202702v030101p.pdf
*/
/**@defgroup tsip_stack_group 3GPP IMS/LTE Stack
*/
extern tsip_event_t* tsip_event_create(tsip_ssession_t* ss, short code, const char* phrase, const tsip_message_t* sipmessage, tsip_event_type_t type);
#define TSIP_STACK_SIGNAL(self, code, phrase) \
{ \
tsip_event_t* e; \
if((e = tsip_event_create(tsk_null, code, phrase, tsk_null, tsip_event_stack))){ \
TSK_RUNNABLE_ENQUEUE_OBJECT(TSK_RUNNABLE(self), e); \
} \
}
static int __tsip_stack_get_transport_idx_by_name(tsip_stack_t *self, const char* name)
{
if(tsk_strnullORempty(name) && TSIP_STACK_MODE_IS_CLIENT(self)) {
return self->network.transport_idx_default; // for backward compatibility
}
return tsip_transport_get_idx_by_name(name);
}
/* Internal function used to set all user's parameters */
static int __tsip_stack_set(tsip_stack_t *self, va_list* app)
{
tsip_stack_param_type_t curr;
while((curr = va_arg(*app, tsip_stack_param_type_t)) != tsip_pname_null) {
switch(curr) {
/* === Identity === */
case tsip_pname_display_name: {
/* (const char*)NAME_STR */
const char* NAME_STR = va_arg(*app, const char*);
tsk_strupdate(&self->identity.display_name, NAME_STR);
if (self->identity.impu) {
tsk_strupdate(&self->identity.impu->display_name, NAME_STR);
}
break;
}
case tsip_pname_impu:
case tsip_pname_preferred_id: {
/* (const char*)URI_STR */
const char* URI_STR = va_arg(*app, const char*);
if(!tsk_strnullORempty(URI_STR)) {
tsip_uri_t *uri = tsip_uri_parse(URI_STR, tsk_strlen(URI_STR));
if(uri) {
tsk_strupdate(&uri->display_name, self->identity.display_name);
if(curr == tsip_pname_impu) {
TSK_OBJECT_SAFE_FREE(self->identity.impu);
self->identity.impu = uri;
}
else {
TSK_OBJECT_SAFE_FREE(self->identity.preferred);
self->identity.preferred = uri;
}
}
else {
TSK_DEBUG_ERROR("'%s' is an invalid SIP/TEL URI", URI_STR);
if(curr == tsip_pname_impu) {
return -1; /* IMPU is mandatory but P-Preferred-Identity isn't. */
}
}
}
else if(curr == tsip_pname_impu) {
TSK_DEBUG_ERROR("IMPU (IMS Public Identity) is mandatory.");
return -1;
}
break;
}
case tsip_pname_impi: {
/* (const char*)IMPI_STR */
const char* IMPI_STR = va_arg(*app, const char*);
if(tsk_strnullORempty(IMPI_STR)) {
TSK_DEBUG_ERROR("IMPI (IMS Private Identity) is mandatory.");
return -1; /* mandatory */
}
tsk_strupdate(&self->identity.impi, IMPI_STR);
break;
}
case tsip_pname_password: {
/* (const char*)PASSORD_STR */
const char* PASSORD_STR = va_arg(*app, const char*);
tsk_strupdate(&self->identity.password, PASSORD_STR);
break;
}
/* === SigComp === */
case tsip_pname_sigcomp: {
/* (unsigned)DMS_UINT, (unsigned)SMS_UINT, (unsigned)CPB_UINT, (tsk_bool_t)PRES_DICT_BOOL */
self->sigcomp.dms = va_arg(*app, unsigned);
self->sigcomp.sms = va_arg(*app, unsigned);
self->sigcomp.cpb = va_arg(*app, unsigned);
self->sigcomp.pres_dict = va_arg(*app, tsk_bool_t);
break;
}
case tsip_pname_sigcomp_add_compartment: {
/* (const char*)COMPARTMENT_ID_STR */
if(!self->sigcomp.handle) {
self->sigcomp.handle = tsip_sigcomp_handler_create(self->sigcomp.cpb, self->sigcomp.dms, self->sigcomp.sms);
tsip_sigcomp_handler_set_dicts(self->sigcomp.handle, self->sigcomp.sip_dict, self->sigcomp.pres_dict);
}
tsip_sigcomp_handler_add_compartment(self->sigcomp.handle, va_arg(*app, const char*));
break;
}
case tsip_pname_sigcomp_remove_compartment: {
/* (const char*)COMPARTMENT_ID_STR */
if(self->sigcomp.handle) {
tsip_sigcomp_handler_remove_compartment(self->sigcomp.handle, va_arg(*app, const char*));
}
break;
}
/* === Network === */
case tsip_pname_realm: {
/* (const char*)URI_STR */
const char* URI_STR = va_arg(*app, const char*);
tsip_uri_t *uri;
if(!tsk_strnullORempty(URI_STR) && (uri = tsip_uri_parse(URI_STR, tsk_strlen(URI_STR)))) {
if(uri->type == uri_unknown) { /* scheme is missing or unsupported? */
tsk_strupdate(&uri->scheme, "sip");
uri->type = uri_sip;
}
TSK_OBJECT_SAFE_FREE(self->network.realm); /* delete old */
self->network.realm = uri;
}
else {
TSK_DEBUG_ERROR("'%s' is an invalid SIP/TEL URI", URI_STR);
return -1; /* mandatory */
}
break;
}
case tsip_pname_local_ip: {
/* (const char*)TRANSPORT_STR, (const char*)IP_STR */
const char* TRANSPORT_STR = va_arg(*app, const char*);
const char* IP_STR = va_arg(*app, const char*);
int t_idx = __tsip_stack_get_transport_idx_by_name(self, TRANSPORT_STR);
if(t_idx < 0) {
TSK_DEBUG_ERROR("%s not valid as transport or you're probably using deprecated function", TRANSPORT_STR);
return -1;
}
tsk_strupdate(&self->network.local_ip[t_idx], IP_STR);
self->network.local_ip_is_set_by_user[t_idx] = tsk_true; // do not query best source when stack is re-started
if(TSIP_STACK_MODE_IS_SERVER(self) && !tsk_strnullORempty(TRANSPORT_STR)) {
self->network.transport_types[t_idx] = tsip_transport_get_type_by_name(TRANSPORT_STR);
}
break;
}
case tsip_pname_local_port: {
/* (const char*)TRANSPORT_STR, (unsigned)PORT_UINT */
const char* TRANSPORT_STR = va_arg(*app, const char*);
unsigned PORT_UINT = va_arg(*app, unsigned);
int t_idx = __tsip_stack_get_transport_idx_by_name(self, TRANSPORT_STR);
if(t_idx < 0) {
TSK_DEBUG_ERROR("%s not valid as transport or you're probably using deprecated function", TRANSPORT_STR);
return -1;
}
self->network.local_port[t_idx] = PORT_UINT;
if(TSIP_STACK_MODE_IS_SERVER(self) && !tsk_strnullORempty(TRANSPORT_STR)) {
self->network.transport_types[t_idx] = tsip_transport_get_type_by_name(TRANSPORT_STR);
}
break;
}
case tsip_pname_aor: {
/* (const char*)TRANSPORT_STR, (const char*)IP_STR, (unsigned)PORT_UINT */
const char* TRANSPORT_STR = va_arg(*app, const char*);
const char* IP_STR = va_arg(*app, const char*);
tnet_port_t PORT_UINT = (tnet_port_t)va_arg(*app, unsigned);
int t_idx = __tsip_stack_get_transport_idx_by_name(self, TRANSPORT_STR);
if(t_idx < 0) {
TSK_DEBUG_ERROR("%s not valid as transport or you're probably using deprecated function", TRANSPORT_STR);
return -1;
}
if(!tsk_strnullORempty(IP_STR)) {
tsk_strupdate(&self->network.aor.ip[t_idx], IP_STR);
}
if(PORT_UINT) {
self->network.aor.port[t_idx] = PORT_UINT;
}
break;
}
case tsip_pname_discovery_naptr: {
/* (tsk_bool_t)ENABLED_BOOL */
self->network.discovery_naptr = va_arg(*app, tsk_bool_t);
break;
}
case tsip_pname_discovery_dhcp: {
/* (tsk_bool_t)ENABLED_BOOL */
self->network.discovery_dhcp = va_arg(*app, tsk_bool_t);
break;
}
case tsip_pname_proxy_cscf: {
/* (const char*)FQDN_STR, (unsigned)PORT_UINT, (const char*)TRANSPORT_STR, (const char*)IP_VERSION_STR */
const char* FQDN_STR = va_arg(*app, const char*);
tnet_port_t PORT_UINT = va_arg(*app, unsigned);
const char* TRANSPORT_STR = va_arg(*app, const char*);
const char* IP_VERSION_STR = va_arg(*app, const char*);
int t_idx = __tsip_stack_get_transport_idx_by_name(self, TRANSPORT_STR);
if(t_idx < 0) {
TSK_DEBUG_ERROR("%s not valid as transport or you're probably using deprecated function", TRANSPORT_STR);
return -1;
}
if(TSIP_STACK_MODE_IS_CLIENT(self)) {
// "client" mode support a unique proxy_cscf -> reset previous transports
int k;
for(k = 0; k < sizeof(self->network.proxy_cscf_type)/sizeof(self->network.proxy_cscf_type[0]); ++k) {
self->network.proxy_cscf_type[k] = tnet_socket_type_invalid;
}
}
/* IP Address */
tsk_strupdate(&self->network.proxy_cscf[t_idx], FQDN_STR);
/* Port */
if(PORT_UINT) {
self->network.proxy_cscf_port[t_idx] = PORT_UINT;
}
/* Transport */
if(tsk_strnullORempty(TRANSPORT_STR) || tsk_striequals(TRANSPORT_STR, "UDP")) {
TNET_SOCKET_TYPE_SET_UDP(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "DTLS")) {
TNET_SOCKET_TYPE_SET_DTLS(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "TCP")) {
TNET_SOCKET_TYPE_SET_TCP(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "TLS")) {
TNET_SOCKET_TYPE_SET_TLS(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "SCTP")) {
TNET_SOCKET_TYPE_SET_SCTP(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "WS")) {
TNET_SOCKET_TYPE_SET_WS(self->network.proxy_cscf_type[t_idx]);
}
else if(tsk_striequals(TRANSPORT_STR, "WSS")) {
TNET_SOCKET_TYPE_SET_WSS(self->network.proxy_cscf_type[t_idx]);
}
TNET_SOCKET_TYPE_SET_IPV4(self->network.proxy_cscf_type[t_idx]); // IPv4 is the default version
/* whether to use ipv6 or not */
if(!tsk_strnullORempty(IP_VERSION_STR)) {
if(tsk_strcontains(IP_VERSION_STR, tsk_strlen(IP_VERSION_STR), "6")) {
TNET_SOCKET_TYPE_SET_IPV6Only(self->network.proxy_cscf_type[t_idx]); // "only" to clear IPv4 flag
}
if(tsk_strcontains(IP_VERSION_STR, tsk_strlen(IP_VERSION_STR), "4")) {
TNET_SOCKET_TYPE_SET_IPV4(self->network.proxy_cscf_type[t_idx]); /* Not IPV4only ==> '46'/'64' */
}
}
/* use same transport type as the proxy-cscf */
self->network.transport_types[t_idx] = self->network.proxy_cscf_type[t_idx];
/* set default transport */
self->network.transport_idx_default = t_idx;
break;
}
case tsip_pname_dnsserver: {
/* (const char*)IP_STR */
const char* IP_STR = va_arg(*app, const char*);
if(tnet_dns_add_server(self->dns_ctx, IP_STR)) {
TSK_DEBUG_ERROR("Failed to add [%s] as DNS server", IP_STR);
}
break;
}
case tsip_pname_max_fds: {
/* (unsigned)MAX_FDS_UINT */
self->network.max_fds = va_arg(*app, unsigned);
break;
}
case tsip_pname_mode: {
/* (tsip_stack_mode_t)MODE_ENUM */
self->network.mode = va_arg(*app, tsip_stack_mode_t);
break;
}
/* === Security === */
case tsip_pname_early_ims: {
/* (tsk_bool_t)ENABLED_BOOL */
self->security.earlyIMS = va_arg(*app, tsk_bool_t);
break;
}
case tsip_pname_secagree_ipsec: {
/* (const char*)TRANSPORT_STR, (tsk_bool_t)ENABLED_BOOL */
const char* TRANSPORT_STR = va_arg(*app, const char*);
tsk_bool_t ENABLED_BOOL = va_arg(*app, tsk_bool_t);
int t_idx = __tsip_stack_get_transport_idx_by_name(self, TRANSPORT_STR);
if(t_idx < 0) {
TSK_DEBUG_ERROR("%s not valid as transport or you're probably using deprecated function", TRANSPORT_STR);
return -1;
}
if(ENABLED_BOOL) {
tsk_strupdate(&self->security.secagree_mech, "ipsec-3gpp");
TNET_SOCKET_TYPE_SET_IPSEC(self->network.proxy_cscf_type[t_idx]);
}
else {
TNET_SOCKET_TYPE_UNSET(self->network.proxy_cscf_type[t_idx], IPSEC);
}
break;
}
case tsip_pname_secagree_tls: {
/* (tsk_bool_t)ENABLED_BOOL */
if((self->security.enable_secagree_tls = va_arg(*app, tsk_bool_t))) {
tsk_strupdate(&self->security.secagree_mech, "tls");
}
break;
}
case tsip_pname_amf: {
/* (uint16_t)AMF_UINT16 */
unsigned amf = va_arg(*app, unsigned);
self->security.amf[0] = (amf >> 8);
self->security.amf[1] = (amf & 0xFF);
break;
}
case tsip_pname_operator_id: {
/* (const char*)OPID_HEX_STR */
const char* hexstr = va_arg(*app, const char*);
tsk_size_t len = tsk_strlen(hexstr);
if(len && !(len & 0x01)) {
tsk_size_t i, j;
if(tsk_strindexOf(hexstr, tsk_strlen(hexstr), "0x") == 0) {
hexstr += 2;
len -= 2;
}
/* reset old value */
memset(self->security.operator_id, 0, sizeof(self->security.operator_id));
/* set new value */
if(len) { /* perhaps there were only 2 chars*/
for(i = 0, j = 0; (i<(sizeof(operator_id_t) * 2) && i<len); i+=2, j++) {
#if 0 /* Could cause SIGBUS error (if memory misaligned) */
sscanf(&hexstr[i], "%2x", &self->security.operator_id[j]);
#else
static unsigned _1bytes; /* do not use neither int8_t nor uint8_t */
sscanf(&hexstr[i], "%2x", &_1bytes);
self->security.operator_id[j] = (_1bytes & 0xFF);
#endif
}
}
}
else {
TSK_DEBUG_ERROR("%s is invalid for an Operator Id value.", hexstr);
}
break;
}
case tsip_pname_ipsec_params: {
/* (const char*)ALG_STR, (const char*)EALG_STR, (const char*)MODE_STR, (const char*)PROTOCOL_STR*/
tsk_strupdate(&self->security.ipsec.alg, va_arg(*app, const char*));
tsk_strupdate(&self->security.ipsec.ealg, va_arg(*app, const char*));
tsk_strupdate(&self->security.ipsec.mode, va_arg(*app, const char*));
tsk_strupdate(&self->security.ipsec.protocol, va_arg(*app, const char*));
break;
}
case tsip_pname_tls_certs: {
/* (const char*)CA_FILE_STR, (const char*)PUB_FILE_STR, (const char*)PRIV_FILE_STR, (tsk_bool_t)VERIF_BOOL */
tsk_strupdate(&self->security.tls.ca, va_arg(*app, const char*));
tsk_strupdate(&self->security.tls.pbk, va_arg(*app, const char*));
tsk_strupdate(&self->security.tls.pvk, va_arg(*app, const char*));
self->security.tls.verify = va_arg(*app, tsk_bool_t);
break;
}
/* === Dummy Headers === */
case tsip_pname_header: {
/* (const char*)NAME_STR, (const char*)VALUE_STR */
const char* NAME_STR = va_arg(*app, const char*);
const char* VALUE_STR = va_arg(*app, const char*);
if(VALUE_STR == ((const char*)-1)) { /* UNSET */
tsk_params_remove_param(self->headers, NAME_STR);
}
else { /* SET */
tsk_params_add_param(&self->headers, NAME_STR, VALUE_STR);
}
break;
}
/* === Nat Traversal === */
case tsip_pname_stun_server: {
/* (const char*)IP_STR, (unsigned)PORT_UINT */
const char* IP_STR = va_arg(*app, const char*);
unsigned PORT_UINT = va_arg(*app, unsigned);
/* do not check, Null==> disable STUN */
tsk_strupdate(&self->natt.stun.ip, IP_STR);
self->natt.stun.port = PORT_UINT;
break;
}
case tsip_pname_stun_cred: {
/* (const char*)USR_STR, (const char*)PASSORD_STR */
const char* USR_STR = va_arg(*app, const char*);
const char* PASSORD_STR = va_arg(*app, const char*);
tsk_strupdate(&self->natt.stun.login, USR_STR);
tsk_strupdate(&self->natt.stun.pwd, PASSORD_STR);
break;
}
case tsip_pname_stun_enabled: {
/* (tsk_bool_t)ENABLED_BOOL */
self->natt.stun.enabled = va_arg(*app, tsk_bool_t);
break;
}
/* === User Data === */
case tsip_pname_userdata: {
/* (const void*)DATA_PTR */
self->userdata = va_arg(*app, const void*);
break;
}
default: {
/* va_list will be unsafe ==> must exit */
TSK_DEBUG_WARN("Found unknown pname.");
goto bail;
}
}/* switch */
}/* while */
bail:
return 0;
}
/**@ingroup tsip_stack_group
* Creates new 3GPP IMS/LTE stack handle.
* As the 3GPP IMS/LTE stack depends on the network library (tinyNET), you MUST call <a href="http://doubango.org/API/tinyNET/tnet_8c.html#affba6c2710347476f615b0135777c640"> tnet_startup()</a> before using any SIP function (tsip_*).
* <a href="http://doubango.org/API/tinyNET/tnet_8c.html#ac42b22a7ac5831f04326aee9de033c84"> tnet_cleanup()</a> is used to terminate use of network functions.
* @param callback Callback function to call to alert the application for new SIP or media events.
* @param realm_uri The realm is the name of the domain name to authenticate to. It should be a valid SIP URI (e.g. sip:open-ims.test).
* @param impi_uri The IMPI is a unique identifier assigned to a user (or UE) by the home network.
* It could be either a SIP URI (e.g. sip:bob@open-ims.test), a tel URI (e.g. tel:+33100000) or any alphanumeric string (e.g. bob@open-ims.test or bob).
* It is used to authenticate the UE (username field in SIP Authorization/Proxy-Authorization header).
* @param impu_uri As its name says, it<69>s you public visible identifier where you are willing to receive calls or any demands.
* An IMPU could be either a SIP or tel URI (e.g. tel:+33100000 or sip:bob@open-ims.test). In IMS world, a user can have multiple IMPUs associated to its unique IMPI.
* @param ... Any TSIP_STACK_SET_*() macros.
* @retval A valid handle if succeed and Null-handle otherwise. As a stack is a well-defined object, you should use @a TSK_OBJECT_SAFE_FREE() to safely destroy the handle.
*
* @code
int app_callback(const tsip_event_t *sipevent);
const char* realm_uri = "sip:open-ims.test";
const char* impi_uri = "bob@open-ims.test";
const char* impu_uri = "sip:bob@open-ims.test";
tsip_stack_handle_t* stack = tsip_stack_create(app_callback, realm_uri, impi_uri, impu_uri,
TSIP_STACK_SET_PASSWORD("mysecret"),
// ...other macros...
TSIP_STACK_SET_NULL());
// ...whatever
TSK_OBJECT_SAFE_FREE(stack);
* @endcode
* @sa @ref tsip_stack_set()<br>@ref tsip_stack_start()
*/
tsip_stack_handle_t* tsip_stack_create(tsip_stack_callback_f callback, const char* realm_uri, const char* impi_uri, const char* impu_uri, ...)
{
tsip_stack_t* stack = tsk_null;
va_list ap;
int i;
/* === check values === */
if(!realm_uri || !impi_uri || !impu_uri) {
TSK_DEBUG_ERROR("Invalid parameter.");
goto bail;
}
/* === create the stack === */
if(!(stack = tsk_object_new(tsip_stack_def_t))) { /* should never happen */
TSK_DEBUG_ERROR("Failed to create the stack.");
goto bail;
}
/* === Set mandatory values (realm, IMPI and IMPU) === */
if(tsip_stack_set(stack,
TSIP_STACK_SET_REALM(realm_uri),
TSIP_STACK_SET_IMPI(impi_uri),
TSIP_STACK_SET_IMPU(impu_uri),
TSIP_STACK_SET_NULL())) {
TSK_DEBUG_ERROR("Invalid parameter.");
TSK_OBJECT_SAFE_FREE(stack);
goto bail;
}
/* === Default values (Network) === */
stack->network.mode = tsip_stack_mode_ua;
for(i = 0; i < sizeof(stack->network.local_port)/sizeof(stack->network.local_port[0]); ++i) {
stack->network.local_port[i] = TNET_SOCKET_PORT_ANY;
}
for(i = 0; i < sizeof(stack->network.proxy_cscf_port)/sizeof(stack->network.proxy_cscf_port[0]); ++i) {
stack->network.proxy_cscf_port[i] = 5060;
}
for(i = 0; i < sizeof(stack->network.proxy_cscf_type)/sizeof(stack->network.proxy_cscf_type[0]); ++i) {
stack->network.proxy_cscf_type[i] = tnet_socket_type_invalid;
}
stack->network.max_fds = tmedia_defaults_get_max_fds();
// all events should be delivered to the user before the stack stop
tsk_runnable_set_important(TSK_RUNNABLE(stack), tsk_true);
/* === SigComp === */
// only create the handler on-demand: when compartment is added
stack->sigcomp.dms = TSIP_SIGCOMP_DMS;
stack->sigcomp.sms = TSIP_SIGCOMP_SMS;
stack->sigcomp.cpb = TSIP_SIGCOMP_CPB;
stack->sigcomp.sip_dict = TSIP_SIGCOMP_SIP_DICT;
stack->sigcomp.pres_dict = TSIP_SIGCOMP_PRES_DICT;
/* === DNS context ===
* Because of TSIP_STACK_SET_DNS_SERVER(), ctx should be created before calling __tsip_stack_set()
*/
stack->dns_ctx = tnet_dns_ctx_create();
/* === DHCP context === */
/* === NAT Traversal === */
{
const char *server_ip, *usr_name, *usr_pwd;
uint16_t server_port;
stack->natt.stun.enabled = tmedia_defaults_get_stun_enabled();
if(tmedia_defaults_get_stun_server(&server_ip, &server_port) == 0) {
tsk_strupdate(&stack->natt.stun.ip, server_ip);
stack->natt.stun.port = server_port;
}
if(tmedia_defaults_get_stun_cred(&usr_name, &usr_pwd) == 0) {
tsk_strupdate(&stack->natt.stun.login, usr_name);
tsk_strupdate(&stack->natt.stun.pwd, usr_pwd);
}
}
/* === Set user supplied parameters === */
va_start(ap, impu_uri);
if(__tsip_stack_set(stack, &ap)) {
TSK_DEBUG_ERROR("Invalid parameter.");
TSK_OBJECT_SAFE_FREE(stack);
va_end(ap);
goto bail;
}
va_end(ap);
/* === Internals === */
stack->callback = callback;
if(!stack->ssessions) {
stack->ssessions = tsk_list_create();
}
if(!stack->headers) { /* could be created by tsk_params_add_param() */
stack->headers = tsk_list_create();
}
/* === Layers === */
if(!(stack->layer_dialog = tsip_dialog_layer_create(stack))) {
TSK_DEBUG_ERROR("Failed to create Dialog layer");
TSK_OBJECT_SAFE_FREE(stack);
goto bail;
}
if(!(stack->layer_transac = tsip_transac_layer_create(stack))) {
TSK_DEBUG_ERROR("Failed to create Transac layer");
TSK_OBJECT_SAFE_FREE(stack);
goto bail;
}
if(!(stack->layer_transport = tsip_transport_layer_create(stack))) {
TSK_DEBUG_ERROR("Failed to create Transport layer");
TSK_OBJECT_SAFE_FREE(stack);
goto bail;
}
bail:
return stack;
}
/**@ingroup tsip_stack_group
* Starts a 3GPP IMS/LTE stack. This function MUST be called before you start calling any SIP function (@a tsip_*).
* @param self The 3GPP IMS/LTE stack to start. This handle should be created using @ref tsip_stack_create().
* @retval Zero if succeed and non-zero error code otherwise.
*/
int tsip_stack_start(tsip_stack_handle_t *self)
{
int ret = -1, t_idx, tx_count;
tsip_stack_t *stack = self;
tnet_socket_type_t* tx_values;
const char* stack_error_desc = "Failed to start the stack";
if(!stack) {
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
if(stack->started) {
TSK_DEBUG_INFO("Stack Already started");
return 0;
}
tsk_safeobj_lock(stack);
// transports
if(TSIP_STACK_MODE_IS_SERVER(stack)) {
TSK_DEBUG_INFO("Stack running in SERVER mode");
tx_values = &stack->network.transport_types[0];
tx_count = sizeof(stack->network.transport_types) / sizeof(stack->network.transport_types[0]);
}
else {
TSK_DEBUG_INFO("Stack running in CLIENT mode");
tx_values = &stack->network.proxy_cscf_type[0];
tx_count = sizeof(stack->network.proxy_cscf_type) / sizeof(stack->network.proxy_cscf_type[0]);
}
/* === Timer manager === */
if(!stack->timer_mgr_global) {
stack->timer_mgr_global = tsk_timer_mgr_global_ref();
}
if((ret = tsk_timer_manager_start(stack->timer_mgr_global))) {
goto bail;
}
/* === Set P-Preferred-Identity === */
if(!stack->identity.preferred && stack->identity.impu) {
stack->identity.preferred = tsk_object_ref((void*)stack->identity.impu);
}
/* === Set Max FDs === */
if (stack->network.max_fds > 0 && stack->network.max_fds < 0xFFFF) {
TSK_DEBUG_INFO("Setting max FDs to %u", (unsigned)stack->network.max_fds);
ret = tnet_set_fd_max_allowed(stack->network.max_fds);
if (ret) {
TSK_DEBUG_ERROR("Failed to set max FDs to %u", (unsigned)stack->network.max_fds);
/* goto bail; */ // Not fatal error
}
}
TSK_DEBUG_INFO("secagree_mech=%s\n", stack->security.secagree_mech);
stack->security.enable_secagree_ipsec = tsk_true;
TSK_DEBUG_INFO("enable_secagree_ipsec=%d\n", stack->security.enable_secagree_ipsec);
/* === Transport type === */
if(!tsk_strnullORempty(stack->security.secagree_mech)) {
if(tsk_striequals(stack->security.secagree_mech, "ipsec-3gpp") && stack->security.enable_secagree_ipsec) {
#if 0
TNET_SOCKET_TYPE_SET_IPSEC(stack->network.proxy_cscf_type);
#endif
TSK_DEBUG_ERROR("Not implemented");
}
//else if if(tsk_striquals(stack->security.secagree_mech, "ipsec-ike"))
}
for(t_idx = 0; t_idx < tx_count; ++t_idx) {
if(!TNET_SOCKET_TYPE_IS_VALID(tx_values[t_idx])) {
continue;
}
/* === Use DNS NAPTR+SRV for the P-CSCF discovery if we are in client mode === */
if(TSIP_STACK_MODE_IS_CLIENT(stack)) {
if(tsk_strnullORempty(stack->network.proxy_cscf[t_idx]) || (stack->network.discovery_dhcp || stack->network.discovery_naptr)) {
if(stack->network.discovery_dhcp) { /* DHCP v4/v6 */
/* FIXME: */
TSK_DEBUG_ERROR("Unexpected code called");
ret = -2;
} /* DHCP */
else { /* DNS NAPTR + SRV*/
char* hostname = tsk_null;
tnet_port_t port = 0;
const char* service = TNET_SOCKET_TYPE_IS_DGRAM(tx_values[t_idx]) ? "SIP+D2U" : (TNET_SOCKET_TYPE_IS_TLS(tx_values[t_idx]) ? "SIPS+D2T" : "SIP+D2T");
if((ret = tnet_dns_query_naptr_srv(stack->dns_ctx, stack->network.realm->host, service, &hostname, &port)) == 0) {
TSK_DEBUG_INFO("DNS SRV(NAPTR(%s, %s) = [%s / %d]", stack->network.realm->host, service, hostname, port);
tsk_strupdate(&stack->network.proxy_cscf[t_idx], hostname);
if(!stack->network.proxy_cscf_port[t_idx] || stack->network.proxy_cscf_port[t_idx]==5060) { /* Only if the Proxy-CSCF port is missing or default */
stack->network.proxy_cscf_port[t_idx] = port;
}
}
else {
TSK_DEBUG_ERROR("P-CSCF discovery using DNS NAPTR failed. The stack will use the user supplied address and port.");
}
TSK_FREE(hostname);
} /* NAPTR */
}
/* Check Proxy-CSCF IP address */
if(!tsk_strnullORempty(stack->network.proxy_cscf[t_idx])) {
TSK_DEBUG_INFO("Proxy-CSCF=[%s]:%d", stack->network.proxy_cscf[t_idx], stack->network.proxy_cscf_port[t_idx]);
}
else {
TSK_DEBUG_ERROR("Proxy-CSCF IP address is Null.");
ret = -1983;
goto bail;
}
}// !Server mode
/* === Get Best source address === */
// Best local address must be updated if not defined or none is set by the user.
// The local address could be no-null if the stack is re-starting: https://code.google.com/p/doubango/issues/detail?id=454 and https://code.google.com/p/idoubs/issues/detail?id=195
if (!stack->network.local_ip_is_set_by_user[t_idx] || tsk_strnullORempty(stack->network.local_ip[t_idx]) || tsk_striequals(stack->network.local_ip[t_idx], "127.0.0.1")) { /* loacal-ip is missing? */
tnet_ip_t bestsource;
if ((ret = tnet_getbestsource(stack->network.proxy_cscf[t_idx] ? stack->network.proxy_cscf[t_idx] : "google.com",
stack->network.proxy_cscf_port[t_idx] ? stack->network.proxy_cscf_port[t_idx] : 5060,
tx_values[t_idx],
&bestsource))) {
TSK_DEBUG_ERROR("Failed to get best source [%d]", ret);
/* do not exit ==> will use default IP address */
}
else {
tsk_strupdate(&stack->network.local_ip[t_idx], bestsource);
TSK_DEBUG_INFO("Best source at %d: %s", t_idx, bestsource);
}
}
else {
TSK_DEBUG_INFO("Do not query for best source address at %d, local_ip_is_set_by_user=%d, local_ip=%s", t_idx, stack->network.local_ip_is_set_by_user[t_idx], stack->network.local_ip[t_idx]);
}
} /* for (t_idx...) */
/* === Runnable === */
TSK_RUNNABLE(stack)->run = run;
if((ret = tsk_runnable_start(TSK_RUNNABLE(stack), tsip_event_def_t))) {
stack_error_desc = "Failed to start runnable";
TSK_DEBUG_ERROR("%s", stack_error_desc);
goto bail;
}
// must be here because the runnable object is only valid after start()
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_starting, "Stack starting");
/* === Nat Traversal === */
// delete previous context
TSK_OBJECT_SAFE_FREE(stack->natt.ctx);
if(stack->natt.stun.enabled && !tsk_strnullORempty(stack->natt.stun.ip)) {
if(stack->natt.stun.port == 0) {
/* FIXME: for now only UDP(IPv4/IPv6) is supported */
stack->natt.stun.port = kStunPortDefaultTcpUdp;
}
TSK_DEBUG_INFO("STUN server = %s:%u", stack->natt.stun.ip, stack->natt.stun.port);
stack->natt.ctx = tnet_nat_context_create(TNET_SOCKET_TYPE_IS_IPV6(tx_values[stack->network.transport_idx_default])? tnet_socket_type_udp_ipv6: tnet_socket_type_udp_ipv4,
stack->natt.stun.login, stack->natt.stun.pwd);
ret = tnet_nat_set_server(stack->natt.ctx, stack->natt.stun.ip, stack->natt.stun.port);
}
/* === Transport Layer === */
for(t_idx = 0; t_idx < tx_count; ++t_idx) {
if(!TNET_SOCKET_TYPE_IS_VALID(tx_values[t_idx])) {
continue;
}
if((ret = tsip_transport_layer_add(stack->layer_transport, stack->network.local_ip[t_idx], stack->network.local_port[t_idx], tx_values[t_idx], "SIP transport"))) {
stack_error_desc = "Failed to add new transport";
TSK_DEBUG_ERROR("%s", stack_error_desc);
goto bail;
}
}
/* Starts the transport Layer */
if((ret = tsip_transport_layer_start(stack->layer_transport))) {
stack_error_desc = "Failed to start sip transport";
TSK_DEBUG_ERROR("%s", stack_error_desc);
goto bail;
}
/* Update the local_ip */
for(t_idx = 0; t_idx < tx_count; ++t_idx) {
if(!TNET_SOCKET_TYPE_IS_VALID(tx_values[t_idx])) {
continue;
}
if(tsk_strnullORempty(stack->network.local_ip[t_idx])) {
const tsip_transport_t* transport = tsip_transport_layer_find_by_type(stack->layer_transport, tx_values[t_idx]);
if(transport) {
tnet_ip_t ip;
if(!tnet_transport_get_ip_n_port_2(transport->net_transport, &ip, tsk_null)) {
tsk_strupdate(&stack->network.local_ip[t_idx], ip);
}
else {
TSK_DEBUG_WARN("Failed to get local_ip for transport type = %d", tx_values[t_idx]);
/* Do not exit */
}
}
}
}
/* === ALL IS OK === */
stack->started = tsk_true;
/* Signal to the end-user that the stack has been started */
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_started, "Stack started");
TSK_DEBUG_INFO("SIP STACK -- START");
tsk_safeobj_unlock(stack);
return 0;
bail:
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_failed_to_start, stack_error_desc);
/* stop all running instances */
if(stack->layer_transport) {
tsip_transport_layer_shutdown(stack->layer_transport);
}
if(TSK_RUNNABLE(stack)->running) {
tsk_runnable_stop(TSK_RUNNABLE(stack));
}
tsk_safeobj_unlock(stack);
return ret;
}
/**@ingroup tsip_stack_group
* Configures the stack.
* @param self The 3GPP IMS/LTE stack to configure. This handle should be created using @ref tsip_stack_create().
* @param ... Any TSIP_STACK_SET_*() or TSIP_STACK_UNSET_*() macros.
* @retval Zero if succeed and non-zero error code otherwise.
*
* @code
int ret = tsip_stack_set(stack,
TSIP_STACK_SET_HEADER("User-Agent", "IM-client/OMA1.0 doubango/v1.0.0"),
TSIP_STACK_SET_NULL());
* @endcode
*
* @sa @ref tsip_stack_create()
*/
int tsip_stack_set(tsip_stack_handle_t *self, ...)
{
if(self) {
int ret;
tsip_stack_t *stack = self;
va_list ap;
va_start(ap, self);
ret = __tsip_stack_set(stack, &ap);
va_end(ap);
return ret;
}
else {
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
}
/**@ingroup tsip_stack_group
* Gets user's data, previously set using @ref TSIP_STACK_SET_USERDATA() macro.
* @param self Stack from which to get the user's data.
*/
const void* tsip_stack_get_userdata(const tsip_stack_handle_t *self)
{
if(self) {
return ((const tsip_stack_t *)self)->userdata;
}
else {
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
}
/**@ingroup tsip_stack_group
*/
tnet_dns_ctx_t* tsip_stack_get_dnsctx(tsip_stack_handle_t *self)
{
if(self) {
return (tnet_dns_ctx_t*)tsk_object_ref(((tsip_stack_t *)self)->dns_ctx);
}
else {
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
}
/**@ingroup tsip_stack_group
*/
tsip_uri_t* tsip_stack_get_preferred_id(tsip_stack_handle_t *self)
{
if(self) {
return (tsip_uri_t*)tsk_object_ref(((tsip_stack_t *)self)->identity.preferred);
}
else {
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
}
/**@ingroup tsip_stack_group
*/
int tsip_stack_get_local_ip_n_port(const tsip_stack_handle_t *self, const char* protocol, tnet_port_t *port, tnet_ip_t *ip)
{
const tsip_stack_t *stack = self;
if(!stack || !port || !ip) {
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
if(stack) {
tsk_list_item_t *item;
tsk_list_foreach(item, stack->layer_transport->transports) {
tsip_transport_t *transport = item->data;
if(transport) {
if(tsk_striequals(transport->protocol, protocol)) {
return tnet_transport_get_public_ip_n_port(transport->net_transport,transport->connectedFD, ip, port);
}
}
}
}
TSK_DEBUG_ERROR("No transport with such protocol (%s) could be found", protocol);
return -2;
}
/**@ingroup tsip_stack_group
* Stops the stack.
* @param self The 3GPP IMS/LTE stack to stop. This handle should be created using @ref tsip_stack_create() and started using tsip_stack_start().
* This function is also called by the garbage collector when the stack is destroyed but you should call it yourself before destroying the stack.<br>
* Before stopping, the stack will hangup all SIP dialogs (starting with non-register dialogs) and destroy all sessions. This is called shutdown phase.
* At the end of this phase, all the SIP sessions will be destroyed.
* @sa @ref tsip_stack_create()<br>@ref tsip_stack_start()
*/
int tsip_stack_stop(tsip_stack_handle_t *self)
{
tsip_stack_t *stack = self;
if(stack) {
tsk_bool_t one_failed = tsk_false;
int ret = 0;
tsk_safeobj_lock(stack);
if(!stack->started) {
TSK_DEBUG_INFO("Stack already stopped");
goto bail;
}
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_stopping, "Stack stopping");
/* Hangup all dialogs starting by REGISTER */
if((ret = tsip_dialog_layer_shutdownAll(stack->layer_dialog))) {
TSK_DEBUG_WARN("Failed to hang-up all dialogs");
one_failed = tsk_true;
}
/* do not try to clean up transactions ==> each dialog will cancel its transactions.
* see tsip_dialog_deinit() which call tsip_transac_layer_cancel_by_dialog() */
/* Stop the timer manager */
// not done as it's global (shared). Will be done when all instance are destoyed
/* Stop the transport layer */
if((ret = tsip_transport_layer_shutdown(stack->layer_transport))) {
TSK_DEBUG_WARN("Failed to stop the transport layer");
one_failed = tsk_true;
}
/* Signal to the end-user that the stack has been stopped
* should be done before tsk_runnable_stop() which will stop the thread
* responsible for the callbacks. The enqueued data have been marked as "important".
* As both the timer manager and the transport layer have been stoped there is no
* chance to got additional events */
if(one_failed) {
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_failed_to_stop, "Stack failed to stop");
}
else {
TSIP_STACK_SIGNAL(self, tsip_event_code_stack_stopped, "Stack stopped");
}
/* Stop runnable (run() thread) */
if((ret = tsk_runnable_stop(TSK_RUNNABLE(stack)))) {
TSK_DEBUG_WARN("Failed to stop the stack");
one_failed = tsk_true;
}
/* Close all SigComp Compartments (do not remove them) */
if(stack->sigcomp.handle) {
tsip_sigcomp_close_all(stack->sigcomp.handle);
}
/* reset AoR */
TSK_FREE_TABLE(stack->network.aor.ip);
memset(stack->network.aor.port, 0, sizeof(stack->network.aor.port));
/* stops timer manager */
if(stack->timer_mgr_global) {
tsk_timer_mgr_global_unref(&stack->timer_mgr_global);
}
if(!one_failed) {
stack->started = tsk_false;
}
TSK_DEBUG_INFO("SIP STACK -- STOP");
bail:
tsk_safeobj_unlock(stack);
return ret;
}
return -1;
}
/* internal function used to construct a valid contact URI */
tsip_uri_t* tsip_stack_get_contacturi(const tsip_stack_t *stack, const char* protocol)
{
if(stack) {
tsk_list_item_t *item;
tsk_list_foreach(item, stack->layer_transport->transports) {
tsip_transport_t *transport = item->data;
if(transport) {
if(tsk_striequals(transport->protocol, protocol)) {
tsip_uri_t* uri = tsk_null;
if((uri = tsip_transport_get_uri(transport, tsk_false))) {
tsk_strupdate(&uri->user_name, stack->identity.impu->user_name);
return uri;
}
}
}
}
}
return tsk_null;
}
/* internal function used to construct a valid Proxy-CSCF URI used as the default first route */
tsip_uri_t* tsip_stack_get_pcscf_uri(const tsip_stack_t *stack, tnet_socket_type_t type, tsk_bool_t lr)
{
if(stack) {
const tsip_transport_t *transport = tsk_null;
if(!TNET_SOCKET_TYPE_IS_VALID(type) && !TSK_LIST_IS_EMPTY(stack->layer_transport->transports)) {
transport = stack->layer_transport->transports->head->data;
}
else {
transport = tsip_transport_layer_find_by_type(stack->layer_transport, type);
}
if(transport) {
tsip_uri_t* uri = tsk_null;
tsk_bool_t ipv6 = TNET_SOCKET_TYPE_IS_IPV6(transport->type);
tsk_bool_t quote_ip = (ipv6 && tsk_strcontains(stack->network.proxy_cscf[transport->idx], tsk_strlen(stack->network.proxy_cscf[transport->idx]), ":")) /* IPv6 IP string?*/;
char* uristring = tsk_null;
tsk_sprintf(&uristring, "%s:%s%s%s:%d;%s;transport=%s",
transport->scheme,
quote_ip ? "[" : "",
stack->network.proxy_cscf[transport->idx],
quote_ip ? "]" : "",
stack->network.proxy_cscf_port[transport->idx],
lr ? "lr" : "",
transport->protocol);
if(uristring) {
if((uri = tsip_uri_parse(uristring, tsk_strlen(uristring)))) {
//uri->host_type = ipv6 ? thttp_host_ipv6 : thttp_host_ipv4;
}
TSK_FREE(uristring);
}
return uri;
}
}
return tsk_null;
}
static void* TSK_STDCALL run(void* self)
{
tsk_list_item_t *curr;
tsip_stack_t *stack = self;
TSK_DEBUG_INFO("SIP STACK::run -- START");
TSK_RUNNABLE_RUN_BEGIN(stack);
if((curr = TSK_RUNNABLE_POP_FIRST(stack))) {
tsip_event_t *sipevent = (tsip_event_t*)curr->data;
if(stack->callback) {
sipevent->userdata = stack->userdata; // needed by sessionless events
stack->callback(sipevent);
}
tsk_object_unref(curr);
}
TSK_RUNNABLE_RUN_END(self);
TSK_DEBUG_INFO("SIP STACK::run -- STOP");
return 0;
}
//========================================================
// SIP stack object definition
//
static tsk_object_t* tsip_stack_ctor(tsk_object_t * self, va_list * app)
{
tsip_stack_t *stack = self;
if(stack) {
tsk_safeobj_init(stack);
}
return self;
}
static tsk_object_t* tsip_stack_dtor(tsk_object_t * self)
{
tsip_stack_t *stack = self;
if(stack) {
/* /!\ Order in which objects are destroyed is very important */
/* Stop
* Will try to hangup all dialogs */
if(stack->started) {
tsip_stack_stop(stack);
}
/* Layers(1/1): Transacs and dialogs use timer_mgr when destroyed
* Dialogs =>(use)=> transacs =>(use)=> transport. */
TSK_OBJECT_SAFE_FREE(stack->layer_dialog);
TSK_OBJECT_SAFE_FREE(stack->layer_transac);
TSK_OBJECT_SAFE_FREE(stack->layer_transport);
/* Internals(1/2) */
if(stack->timer_mgr_global) {
tsk_timer_mgr_global_unref(&stack->timer_mgr_global);
}
/* Identity */
TSK_FREE(stack->identity.display_name);
TSK_OBJECT_SAFE_FREE(stack->identity.impu);
TSK_OBJECT_SAFE_FREE(stack->identity.preferred);
//TSK_OBJECT_SAFE_FREE(stack->associated_identity);
TSK_FREE(stack->identity.impi);
TSK_FREE(stack->identity.password);
/* Network(1/1) */
TSK_FREE_TABLE(stack->network.local_ip);
TSK_OBJECT_SAFE_FREE(stack->network.realm);
TSK_FREE_TABLE(stack->network.proxy_cscf);
TSK_OBJECT_SAFE_FREE(stack->paths);
TSK_FREE_TABLE(stack->network.aor.ip);
TSK_OBJECT_SAFE_FREE(stack->service_routes);
TSK_OBJECT_SAFE_FREE(stack->associated_uris);
/* SigComp (MUST be done after transports) */
TSK_OBJECT_SAFE_FREE(stack->sigcomp.handle);
/* Security(1/1) */
TSK_FREE(stack->security.secagree_mech);
TSK_FREE(stack->security.ipsec.alg);
TSK_FREE(stack->security.ipsec.ealg);
TSK_FREE(stack->security.ipsec.mode);
TSK_FREE(stack->security.ipsec.protocol);
TSK_FREE(stack->security.tls.ca);
TSK_FREE(stack->security.tls.pbk);
TSK_FREE(stack->security.tls.pvk);
/* DNS */
TSK_OBJECT_SAFE_FREE(stack->dns_ctx);
/* NAT Traversal context */
TSK_FREE(stack->natt.stun.ip);
TSK_FREE(stack->natt.stun.login);
TSK_FREE(stack->natt.stun.pwd);
TSK_OBJECT_SAFE_FREE(stack->natt.ctx);
/* DHCP */
/* features */
/* QoS */
/* Internals (2/2) */
TSK_OBJECT_SAFE_FREE(stack->ssessions);
TSK_OBJECT_SAFE_FREE(stack->headers);
tsk_safeobj_deinit(stack);
TSK_DEBUG_INFO("*** SIP Stack destroyed ***");
}
return self;
}
static const tsk_object_def_t tsip_stack_def_s = {
sizeof(tsip_stack_t),
tsip_stack_ctor,
tsip_stack_dtor,
tsk_null,
};
const tsk_object_def_t *tsip_stack_def_t = &tsip_stack_def_s;
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