void cacheex_timeout(ECM_REQUEST *er)
{
if(er->cacheex_wait_time_expired)
return;
er->cacheex_wait_time_expired = 1;
if(er->rc >= E_UNHANDLED)
{
cs_log_dbg(D_LB, "{client %s, caid %04X, prid %06X, srvid %04X} cacheex timeout! ",
(check_client(er->client) ? er->client->account->usr : "******"), er->caid, er->prid, er->srvid);
// if check_cw mode=0, first try to get cw from cache without check counter!
CWCHECK check_cw = get_cwcheck(er);
if(!check_cw.mode)
{
struct ecm_request_t *ecm = NULL;
ecm = check_cache(er, er->client);
if(ecm) // found in cache
{
struct s_write_from_cache *wfc = NULL;
if(!cs_malloc(&wfc, sizeof(struct s_write_from_cache)))
{
NULLFREE(ecm);
return;
}
wfc->er_new = er;
wfc->er_cache = ecm;
if(!add_job(er->client, ACTION_ECM_ANSWER_CACHE, wfc, sizeof(struct s_write_from_cache))) // write_ecm_answer_fromcache
{ NULLFREE(ecm); }
return;
}
}
// check if "normal" readers selected, if not send NOT FOUND!
// cacheex1-client (having always no "normal" reader),
// or not-cacheex-1 client with no normal readers available (or filtered by LB)
if((er->reader_count + er->fallback_reader_count - er->cacheex_reader_count) <= 0)
{
if(!cfg.wait_until_ctimeout)
{
er->rc = E_NOTFOUND;
er->selected_reader = NULL;
er->rcEx = 0;
cs_log_dbg(D_LB, "{client %s, caid %04X, prid %06X, srvid %04X} cacheex timeout: NO \"normal\" readers... not_found! ",
(check_client(er->client) ? er->client->account->usr : "******"), er->caid, er->prid, er->srvid);
send_dcw(er->client, er);
return;
}
}
else
{
if(er->stage < 2)
{
debug_ecm(D_TRACE, "request for %s %s", username(er->client), buf);
request_cw_from_readers(er, 0);
}
}
}
}
/*
* This function returns cw (mostly received) in cache for er, or NULL if not found.
* IMPORTANT:
* - If found, DON'T forget to free returned ecm, because it is a copy useful to get data
* - If found, and cacheex_src client of returned ecm is not NULL, and we want to access it,
* remember to check for its validity (client structure is still existent)
* E.g.: if(ecm->cacheex_src && is_valid_client(ecm->cacheex_src) && !ecm->cacheex_src->kill)
* We don't want make this stuff here to avoid useless cpu time if outside function we would not access to it.
*/
struct ecm_request_t *check_cache(ECM_REQUEST *er, struct s_client *cl)
{
if(!er->csp_hash) return NULL;
ECM_REQUEST *ecm = NULL;
ECMHASH *result;
CW *cw;
uint64_t grp = cl?cl->grp:0;
pthread_rwlock_rdlock(&cache_lock);
result = find_hash_table(&ht_cache, &er->csp_hash, sizeof(int32_t),&compare_csp_hash);
cw = get_first_cw(result, er);
if(
cw
&&
(
cw->csp //csp have no grp!
||
!grp //csp client(no grp) searching for cache
||
(
grp
&&
cw->grp //ecm group --> only when readers/ex-clients answer (e_found) it
&& (grp & cw->grp)
)
)
){
#ifdef CS_CACHEEX
//if preferlocalcards=2 for this ecm request, we can server ONLY cw from localcards readers until stage<3
if(er->preferlocalcards==2 && !cw->localcards && er->stage<3){
pthread_rwlock_unlock(&cache_lock);
return NULL;
}
CWCHECK check_cw = get_cwcheck(er);
if((!cw->proxy && !cw->localcards) //cw received from ONLY cacheex/csp peers
&& check_cw.counter>1
&& cw->count < check_cw.counter
&& (check_cw.mode || !er->cacheex_wait_time_expired)
){
pthread_rwlock_unlock(&cache_lock);
return NULL;
}
#endif
#ifdef CW_CYCLE_CHECK
uint8_t cwc_ct = cw->cwc_cycletime > 0 ? cw->cwc_cycletime : 0;
uint8_t cwc_ncwc = cw->cwc_next_cw_cycle < 2 ? cw->cwc_next_cw_cycle : 2;
if(cw->got_bad_cwc)
{
pthread_rwlock_unlock(&cache_lock);
return NULL;
}
if(checkcwcycle(cl, er, NULL, cw->cw, 0, cwc_ct, cwc_ncwc) != 0){
cs_debug_mask(D_CWC | D_LB, "{client %s, caid %04X, srvid %04X} [check_cache] cyclecheck passed ecm in INT. cache, ecm->rc %d", (cl ? cl->account->usr : "******"), er->caid, er->srvid, ecm ? ecm->rc : -1);
}else{
cs_debug_mask(D_CWC, "cyclecheck [BAD CW Cycle] from Int. Cache detected.. {client %s, caid %04X, srvid %04X} [check_cache] -> skip cache answer", (cl ? cl->account->usr : "******"), er->caid, er->srvid);
cw->got_bad_cwc = 1; // no need to check it again
pthread_rwlock_unlock(&cache_lock);
return NULL;
}
#endif
if (cs_malloc(&ecm, sizeof(ECM_REQUEST))){
ecm->rc = E_FOUND;
ecm->rcEx = 0;
memcpy(ecm->cw, cw->cw, 16);
ecm->grp = cw->grp;
ecm->selected_reader = cw->selected_reader;
ecm->cwc_cycletime = cw->cwc_cycletime;
ecm->cwc_next_cw_cycle = cw->cwc_next_cw_cycle;
#ifdef CS_CACHEEX
ecm->cacheex_src = cw->cacheex_src;
#endif
ecm->cw_count = cw->count;
}
}
pthread_rwlock_unlock(&cache_lock);
return ecm;
}
