/*if msg is set -> it will fake the env. vars conforming with the msg; if NULL
* the env. will be restore to original */
static inline void faked_env( struct cell *t,struct sip_msg *msg)
{
static struct cell *backup_t;
static struct usr_avp **backup_list;
static struct socket_info* backup_si;
static int backup_route_type;
if (msg) {
swap_route_type( backup_route_type, FAILURE_ROUTE);
/* tm actions look in beginning whether transaction is
* set -- whether we are called from a reply-processing
* or a timer process, we need to set current transaction;
* otherwise the actions would attempt to look the transaction
* up (unnecessary overhead, refcounting)
*/
/* backup */
backup_t = get_t();
/* fake transaction */
set_t(t);
/* make available the avp list from transaction */
backup_list = set_avp_list( &t->user_avps );
/* set default send address to the saved value */
backup_si = bind_address;
bind_address = t->uac[0].request.dst.send_sock;
} else {
/* restore original environment */
set_t(backup_t);
set_route_type( backup_route_type );
/* restore original avp list */
set_avp_list( backup_list );
bind_address = backup_si;
}
}
int t_lookup_ident(struct cell ** trans, unsigned int hash_index, unsigned int label)
{
struct cell* p_cell;
if(hash_index >= TABLE_ENTRIES){
LOG(L_ERR,"ERROR: t_lookup_ident: invalid hash_index=%u\n",hash_index);
return -1;
}
LOCK_HASH(hash_index);
/* all the transactions from the entry are compared */
for ( p_cell = get_tm_table()->entrys[hash_index].first_cell;
p_cell; p_cell = p_cell->next_cell )
{
if(p_cell->label == label){
REF_UNSAFE(p_cell);
UNLOCK_HASH(hash_index);
set_t(p_cell);
*trans=p_cell;
DBG("DEBUG: t_lookup_ident: transaction found\n");
return 1;
}
}
UNLOCK_HASH(hash_index);
set_t(0);
*trans=p_cell;
DBG("DEBUG: t_lookup_ident: transaction not found\n");
return -1;
}
static inline void cond_t(int cond)
{
if (cond)
set_t();
else
clr_t();
}
ParamPolicy_3<P1, P2, P3>::ParamPolicy_3(const ParamPolicy_3 &rhs)
: Model(rhs),
prm1_(rhs.prm1_->clone()),
prm2_(rhs.prm2_->clone()),
prm3_(rhs.prm3_->clone()) {
set_t();
}
void run_trans_callbacks( int type , struct cell *trans,
struct sip_msg *req, struct sip_msg *rpl, int code )
{
struct tmcb_params params;
struct tm_callback *cbp;
struct usr_avp **backup;
struct cell *trans_backup = get_t();
params.req = req;
params.rpl = rpl;
params.code = code;
params.extra1 = tmcb_extra1;
params.extra2 = tmcb_extra2;
if (trans->tmcb_hl.first==0 || ((trans->tmcb_hl.reg_types)&type)==0 )
return;
backup = set_avp_list( &trans->user_avps );
for (cbp=trans->tmcb_hl.first; cbp; cbp=cbp->next) {
if ( (cbp->types)&type ) {
LM_DBG("trans=%p, callback type %d, id %d entered\n",
trans, type, cbp->id );
params.param = &(cbp->param);
cbp->callback( trans, type, ¶ms );
}
}
/* env cleanup */
set_avp_list( backup );
tmcb_extra1 = tmcb_extra2 = 0;
set_t(trans_backup);
}
static inline int new_t(struct sip_msg *p_msg)
{
struct cell *new_cell;
/* for ACK-dlw-wise matching, we want From-tags */
if (p_msg->REQ_METHOD==METHOD_INVITE && parse_from_header(p_msg)<0) {
LOG(L_ERR, "ERROR: new_t: no valid From in INVITE\n");
return E_BAD_REQ;
}
/* make sure uri will be parsed before cloning */
if (parse_sip_msg_uri(p_msg)<0) {
LOG(L_ERR, "ERROR: new_t: uri invalid\n");
return E_BAD_REQ;
}
/* add new transaction */
new_cell = build_cell( p_msg ) ;
if ( !new_cell ){
LOG(L_ERR, "ERROR: new_t: out of mem:\n");
return E_OUT_OF_MEM;
}
insert_into_hash_table_unsafe( new_cell, p_msg->hash_index );
set_t(new_cell);
INIT_REF_UNSAFE(T);
/* init pointers to headers needed to construct local
requests such as CANCEL/ACK
*/
init_new_t(new_cell, p_msg);
return 1;
}
void run_reqin_callbacks( struct cell *trans, struct sip_msg *req, int code )
{
struct tmcb_params params;
struct tm_callback *cbp;
struct usr_avp **backup;
struct cell *trans_backup = get_t();
params.req = req;
params.rpl = 0;
params.code = code;
params.extra1 = tmcb_extra1;
params.extra2 = tmcb_extra2;
if (req_in_tmcb_hl->first==0)
return;
backup = set_avp_list( &trans->user_avps );
for (cbp=req_in_tmcb_hl->first; cbp; cbp=cbp->next) {
LM_DBG("trans=%p, callback type %d, id %d entered\n",
trans, cbp->types, cbp->id );
params.param = &(cbp->param);
cbp->callback( trans, cbp->types, ¶ms );
}
set_avp_list( backup );
tmcb_extra1 = tmcb_extra2 = 0;
set_t(trans_backup);
}
ParamPolicy_1<P> & ParamPolicy_1<P>::operator=
(const ParamPolicy_1 &rhs){
if(&rhs != this){
prm_ = rhs.prm_->clone();
set_t();
}
return *this;
}
ParamPolicy_4<P1, P2, P3, P4>::ParamPolicy_4()
: prm1_(),
prm2_(),
prm3_(),
prm4_()
{
set_t();
}
ParamPolicy_4<P1, P2, P3, P4>::ParamPolicy_4
(Ptr<P1> p1, Ptr<P2> p2, Ptr<P3> p3, Ptr<P4> p4)
: prm1_(p1),
prm2_(p2),
prm3_(p3),
prm4_(p4)
{
set_t();
}
ParamPolicy_4<P1, P2, P3, P4>::ParamPolicy_4(const ParamPolicy_4 &rhs)
: Model(rhs),
prm1_(rhs.prm1_->clone()),
prm2_(rhs.prm2_->clone()),
prm3_(rhs.prm3_->clone()),
prm4_(rhs.prm4_->clone())
{
set_t();
}
inline static void retransmission_handler( struct timer_link *retr_tl )
{
struct retr_buf* r_buf ;
enum lists id;
r_buf = get_retr_timer_payload(retr_tl);
#ifdef EXTRA_DEBUG
if (r_buf->my_T->damocles) {
LM_ERR("transaction %p scheduled for deletion and"
" called from RETR timer\n",r_buf->my_T);
abort();
}
#endif
/* the transaction is already removed from RETRANSMISSION_LIST by timer*/
/* re-transmission */
if ( r_buf->activ_type==TYPE_LOCAL_CANCEL
|| r_buf->activ_type==TYPE_REQUEST ) {
LM_DBG("retransmission_handler : request resending"
" (t=%p, %.9s ... )\n", r_buf->my_T, r_buf->buffer.s);
set_t(r_buf->my_T);
SEND_BUFFER( r_buf );
/*if (SEND_BUFFER( r_buf )==-1) {
reset_timer( &r_buf->fr_timer );
fake_reply(r_buf->my_T, r_buf->branch, 503 );
return;
}*/
set_t(T_UNDEFINED);
} else {
LM_DBG("retransmission_handler : reply resending "
"(t=%p, %.9s ... )\n", r_buf->my_T, r_buf->buffer.s);
set_t(r_buf->my_T);
t_retransmit_reply(r_buf->my_T);
set_t(T_UNDEFINED);
}
id = r_buf->retr_list;
r_buf->retr_list = id < RT_T2 ? id + 1 : RT_T2;
retr_tl->timer_list= NULL; /* set to NULL so that set_timer will work */
set_timer( retr_tl, id < RT_T2 ? id + 1 : RT_T2, 0 );
LM_DBG("retransmission_handler : done\n");
}
int crossings(int x0, int y0, struct coef ray)
{
int i, x3, y3, w3, n0;
int d1, d2;
double t, t1;
n0 = 0;
for (i = 0 ; i < num_points ; ++i) {
x3 = coefs[i].b * ray.c - coefs[i].c * ray.b;
y3 = -coefs[i].a * ray.c + coefs[i].c * ray.a;
w3 = coefs[i].a * ray.b - coefs[i].b * ray.a;
if (w3 == 0)
continue;
x3 /= w3;
y3 /= w3;
t = set_t(x0, y0, x0 + 1, y0, x3, y3);
if (t < 0)
continue;
t1 = t;
t = set_t(points[i].x, points[i].y, points[i+1].x, points[i+1].y, x3, y3);
if (t <= 0 || t > 1)
continue;
if (t == 1) {
d1 = ray.a * points[i].x + ray.b * points[i].y + ray.c;
d2 = ray.a * points[i+2].x + ray.b * points[i+2].y + ray.c;
if ((((d1 > 0) && (d2 > 0)) || ((d1 < 0) && (d2 < 0))))
continue;
}
s[n0++] = t1;
}
return n0;
}
inline static int w_t_lookup_cancel(struct sip_msg* msg, char* str, char* str2)
{
struct cell *ret;
if (msg->REQ_METHOD==METHOD_CANCEL) {
ret = t_lookupOriginalT( msg );
DBG("lookup_original: t_lookupOriginalT returned: %p\n", ret);
if (ret != T_NULL_CELL) {
/* The cell is reffed by t_lookupOriginalT, but T is not set.
So we must unref it before returning. */
UNREF(ret);
set_t(T_UNDEFINED);
return 1;
}
set_t(T_UNDEFINED);
} else {
LOG(L_WARN, "WARNING: script error t_lookup_cancel() called for non-CANCEL request\n");
}
return -1;
}
ParamPolicy_3<P1, P2, P3> &ParamPolicy_3<P1, P2, P3>::operator=(
const ParamPolicy_3 &rhs) {
if (&rhs != this) {
prm1_ = rhs.prm1_->clone();
prm2_ = rhs.prm2_->clone();
prm3_ = rhs.prm3_->clone();
set_t();
}
return *this;
}
void helper_fcmp_gt_FT(uint32_t t0, uint32_t t1)
{
CPU_FloatU f0, f1;
f0.l = t0;
f1.l = t1;
if (float32_compare(f0.f, f1.f, &env->fp_status) == 1)
set_t();
else
clr_t();
}
void helper_fcmp_gt_DT(uint64_t t0, uint64_t t1)
{
CPU_DoubleU d0, d1;
d0.ll = t0;
d1.ll = t1;
if (float64_compare(d0.d, d1.d, &env->fp_status) == 1)
set_t();
else
clr_t();
}
void helper_fcmp_gt_DT(CPUSH4State *env, float64 t0, float64 t1)
{
int relation;
set_float_exception_flags(0, &env->fp_status);
relation = float64_compare(t0, t1, &env->fp_status);
if (unlikely(relation == float_relation_unordered)) {
update_fpscr(env, GETPC());
} else if (relation == float_relation_greater) {
set_t(env);
} else {
clr_t(env);
}
}
void helper_fcmp_gt_FT(float32 t0, float32 t1)
{
int relation;
set_float_exception_flags(0, &env->fp_status);
relation = float32_compare(t0, t1, &env->fp_status);
if (unlikely(relation == float_relation_unordered)) {
update_fpscr(GETPC());
} else if (relation == float_relation_greater) {
set_t();
} else {
clr_t();
}
}
void BDSimulator::step()
{
last_reactions_.clear();
{
BDPropagator propagator(*model_, *world_, *rng(), dt(), last_reactions_);
while (propagator())
{
; // do nothing here
}
}
set_t(t() + dt());
num_steps_++;
}
static int script_init( struct sip_msg *foo, void *bar)
{
/* we primarily reset all private memory here to make sure
* private values left over from previous message will
* not be used again */
set_t(T_UNDEFINED);
reset_cancelled_t();
reset_e2eack_t();
/* reset the kr status */
reset_kr();
/* reset the static holders for T routes */
t_on_negative( 0 );
t_on_reply(0);
t_on_branch(0);
return 1;
}
int t_unref( struct sip_msg* p_msg )
{
enum kill_reason kr;
if (T==T_UNDEFINED)
return -1;
if (T!=T_NULL_CELL) {
if (p_msg->first_line.type==SIP_REQUEST){
kr=get_kr();
if (kr==0 ||(p_msg->REQ_METHOD==METHOD_ACK && !(kr & REQ_RLSD)))
t_release_transaction(T);
}
UNREF( T );
}
set_t(T_UNDEFINED);
return 1;
}
int t_unref( struct sip_msg* p_msg )
{
enum kill_reason kr;
if (T==T_UNDEFINED || T==T_NULL_CELL)
return -1;
if (p_msg->first_line.type==SIP_REQUEST){
kr=get_kr();
if (kr==0
||(p_msg->REQ_METHOD==METHOD_ACK && !(kr & REQ_RLSD))) {
LOG(L_WARN, "WARNING: script writer didn't release transaction\n");
t_release_transaction(T);
}
}
UNREF( T );
set_t(T_UNDEFINED);
return 1;
}
inline static int t_check_trans(struct sip_msg* msg, char *foo, char *bar)
{
struct cell *trans;
struct cell *bkup;
int ret;
if (msg->REQ_METHOD==METHOD_CANCEL) {
/* parse needed hdrs*/
if (check_transaction_quadruple(msg)==0) {
LOG(L_ERR, "ERROR:tm:t_check_trans: too few headers\n");
return 0; /*drop request!*/
}
if (!msg->hash_index)
msg->hash_index = hash(msg->callid->body,get_cseq(msg)->number);
/* performe lookup */
trans = t_lookupOriginalT( msg );
if (trans) {
UNREF( trans );
return 1;
} else {
return -1;
}
} else {
bkup = get_t();
ret = t_lookup_request( msg , 0);
if ( (trans=get_t())!=0 ) UNREF(trans);
set_t( bkup );
switch (ret) {
case 1:
/* transaction found */
return 1;
case -2:
/* e2e ACK found */
return 1;
default:
/* notfound */
return -1;
}
}
return ret;
}
inline static int t_check_trans(struct sip_msg* msg)
{
struct cell *trans;
if (msg->REQ_METHOD==METHOD_CANCEL) {
/* parse needed hdrs*/
if (check_transaction_quadruple(msg)==0) {
LM_ERR("too few headers\n");
return 0; /*drop request!*/
}
if (!msg->hash_index)
msg->hash_index = tm_hash(msg->callid->body,get_cseq(msg)->number);
/* performe lookup */
trans = t_lookupOriginalT( msg );
return trans?1:-1;
} else {
trans = get_t();
if (trans==NULL)
return -1;
if (trans!=T_UNDEFINED)
return 1;
switch ( t_lookup_request( msg , 0) ) {
case 1:
/* transaction found -> is it local ACK? */
if (msg->REQ_METHOD==METHOD_ACK)
return 1;
/* .... else -> retransmission */
trans = get_t();
t_retransmit_reply(trans);
UNREF(trans);
set_t(0);
return 0;
case -2:
/* e2e ACK found */
return 1;
default:
/* notfound */
return -1;
}
}
}
static int script_init( struct sip_msg *foo, void *bar)
{
/* we primarily reset all private memory here to make sure
* private values left over from previous message will
* not be used again */
set_t(T_UNDEFINED);
reset_cancelled_t();
reset_e2eack_t();
fr_timeout = timer_id2timeout[FR_TIMER_LIST];
fr_inv_timeout = timer_id2timeout[FR_INV_TIMER_LIST];
/* reset the kill reason status */
reset_kr();
/* reset the static holders for T routes */
t_on_negative( 0 );
t_on_reply(0);
t_on_branch(0);
return SCB_RUN_ALL;
}
bool GillespieSimulator::step(const Real &upto)
{
if (upto <= t())
{
return false;
}
if (upto >= next_time())
{
step();
return true;
}
else
{
// no reaction occurs
// set_dt(next_time() - upto);
set_t(upto);
last_reactions_.clear();
draw_next_reaction();
return false;
}
}
ParamPolicy_3<P1, P2, P3>::ParamPolicy_3(const Ptr<P1> &p1, Ptr<P2> p2,
Ptr<P3> p3)
: prm1_(p1), prm2_(p2), prm3_(p3) {
set_t();
}
ParamPolicy_3<P1, P2, P3>::ParamPolicy_3() : prm1_(), prm2_(), prm3_() {
set_t();
}
/* This function is called whenever a reply for our module is received;
* we need to register this function on module initialization;
* Returns : 0 - core router stops
* 1 - core router relay statelessly
*/
int reply_received( struct sip_msg *p_msg )
{
int msg_status;
int last_uac_status;
int branch;
int reply_status;
utime_t timer;
/* has the transaction completed now and we need to clean-up? */
branch_bm_t cancel_bitmap;
struct ua_client *uac;
struct cell *t;
struct usr_avp **backup_list;
unsigned int has_reply_route;
set_t(T_UNDEFINED);
/* make sure we know the associated transaction ... */
if (t_check(p_msg, &branch ) == -1) goto not_found;
/*... if there is none, tell the core router to fwd statelessly */
t = get_t();
if ((t == 0) || (t == T_UNDEFINED)) goto not_found;
cancel_bitmap=0;
msg_status=p_msg->REPLY_STATUS;
uac=&t->uac[branch];
LM_DBG("org. status uas=%d, uac[%d]=%d local=%d is_invite=%d)\n",
t->uas.status, branch, uac->last_received,
is_local(t), is_invite(t));
last_uac_status=uac->last_received;
if_update_stat( tm_enable_stats, tm_rcv_rpls , 1);
/* it's a cancel which is not e2e ? */
if ( get_cseq(p_msg)->method_id==METHOD_CANCEL && is_invite(t) ) {
/* ... then just stop timers */
reset_timer( &uac->local_cancel.retr_timer);
if ( msg_status >= 200 ) {
reset_timer( &uac->local_cancel.fr_timer);
}
LM_DBG("reply to local CANCEL processed\n");
goto done;
}
/* *** stop timers *** */
/* stop retransmission */
reset_timer(&uac->request.retr_timer);
/* stop final response timer only if I got a final response */
if ( msg_status >= 200 ) {
reset_timer( &uac->request.fr_timer);
}
/* acknowledge negative INVITE replies (do it before detailed
* on_reply processing, which may take very long, like if it
* is attempted to establish a TCP connection to a fail-over dst */
if (is_invite(t) && ((msg_status >= 300) ||
(is_local(t) && !no_autoack(t) && msg_status >= 200) )) {
if (send_ack(p_msg, t, branch)!=0)
LM_ERR("failed to send ACK (local=%s)\n", is_local(t)?"yes":"no");
}
_tm_branch_index = branch;
/* processing of on_reply block */
has_reply_route = (t->on_reply) || (t->uac[branch].on_reply);
if (has_reply_route) {
if (onreply_avp_mode) {
/* lock the reply*/
LOCK_REPLIES( t );
/* set the as avp_list the one from transaction */
backup_list = set_avp_list(&t->user_avps);
} else {
backup_list = 0;
}
/* transfer transaction flag to branch context */
p_msg->flags = t->uas.request->flags;
setb0flags(t->uac[branch].br_flags);
/* run block - first per branch and then global one */
if ( t->uac[branch].on_reply &&
(run_top_route(onreply_rlist[t->uac[branch].on_reply].a,p_msg)
&ACT_FL_DROP) && (msg_status<200) ) {
if (onreply_avp_mode) {
UNLOCK_REPLIES( t );
set_avp_list( backup_list );
}
LM_DBG("dropping provisional reply %d\n", msg_status);
goto done;
}
if ( t->on_reply && (run_top_route(onreply_rlist[t->on_reply].a,p_msg)
&ACT_FL_DROP) && (msg_status<200) ) {
if (onreply_avp_mode) {
UNLOCK_REPLIES( t );
set_avp_list( backup_list );
}
LM_DBG("dropping provisional reply %d\n", msg_status);
goto done;
}
/* transfer current message context back to t */
t->uac[branch].br_flags = getb0flags();
t->uas.request->flags = p_msg->flags;
if (onreply_avp_mode)
/* restore original avp list */
set_avp_list( backup_list );
}
if (!onreply_avp_mode || !has_reply_route)
/* lock the reply*/
LOCK_REPLIES( t );
/* mark that the UAC received replies */
uac->flags |= T_UAC_HAS_RECV_REPLY;
/* we fire a cancel on spot if (a) branch is marked "to be canceled" or (b)
* the whole transaction was canceled (received cancel) and no cancel sent
* yet on this branch; and of course, only if a provisional reply :) */
if (t->uac[branch].flags&T_UAC_TO_CANCEL_FLAG ||
((t->flags&T_WAS_CANCELLED_FLAG) && !t->uac[branch].local_cancel.buffer.s)) {
if ( msg_status < 200 )
/* reply for an UAC with a pending cancel -> do cancel now */
cancel_branch(t, branch);
/* reset flag */
t->uac[branch].flags &= ~(T_UAC_TO_CANCEL_FLAG);
}
if (is_local(t)) {
reply_status = local_reply(t,p_msg, branch,msg_status,&cancel_bitmap);
if (reply_status == RPS_COMPLETED) {
cleanup_uac_timers(t);
if (is_invite(t)) cancel_uacs(t, cancel_bitmap);
/* There is no need to call set_final_timer because we know
* that the transaction is local */
put_on_wait(t);
}
} else {
reply_status = relay_reply(t,p_msg,branch,msg_status,&cancel_bitmap);
/* clean-up the transaction when transaction completed */
if (reply_status == RPS_COMPLETED) {
/* no more UAC FR/RETR (if I received a 2xx, there may
* be still pending branches ...
*/
cleanup_uac_timers(t);
if (is_invite(t)) cancel_uacs(t, cancel_bitmap);
/* FR for negative INVITES, WAIT anything else */
/* set_final_timer(t); */
}
}
if (reply_status!=RPS_PROVISIONAL)
goto done;
/* update FR/RETR timers on provisional replies */
if (msg_status < 200 && (restart_fr_on_each_reply ||
((last_uac_status<msg_status) &&
((msg_status >= 180) || (last_uac_status == 0)))
) ) { /* provisional now */
if (is_invite(t)) {
/* invite: change FR to longer FR_INV, do not
* attempt to restart retransmission any more
*/
backup_list = set_avp_list(&t->user_avps);
if (!fr_inv_avp2timer(&timer)) {
LM_DBG("FR_INV_TIMER = %lld\n", timer);
set_timer(&uac->request.fr_timer,
FR_INV_TIMER_LIST, &timer);
} else {
set_timer(& uac->request.fr_timer, FR_INV_TIMER_LIST, 0);
}
set_avp_list(backup_list);
} else {
/* non-invite: restart retransmissions (slow now) */
uac->request.retr_list = RT_T2;
set_timer(&uac->request.retr_timer, RT_T2, 0);
}
} /* provisional replies */
done:
/* we are done with the transaction, so unref it - the reference
* was incremented by t_check() function -bogdan*/
t_unref(p_msg);
/* don't try to relay statelessly neither on success
* (we forwarded statefully) nor on error; on troubles,
* simply do nothing; that will make the other party to
* retransmit; hopefuly, we'll then be better off
*/
_tm_branch_index = 0;
return 0;
not_found:
set_t(T_UNDEFINED);
return 1;
}
