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module-cacheex.c
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module-cacheex.c
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#define MODULE_LOG_PREFIX "cacheex"
#include "globals.h"
#ifdef CS_CACHEEX
#include "cscrypt/md5.h"
#include "module-cacheex.h"
#include "module-cw-cycle-check.h"
#include "ncam-cache.h"
#include "ncam-chk.h"
#include "ncam-client.h"
#include "ncam-conf.h"
#include "ncam-ecm.h"
#include "ncam-hashtable.h"
#include "ncam-lock.h"
#include "ncam-net.h"
#include "ncam-string.h"
#include "ncam-time.h"
#include "ncam-work.h"
#ifdef CS_CACHEEX_AIO
#include "ncam-array.h"
#endif
#define cs_cacheex_matcher "ncam.cacheex"
extern uint8_t cc_node_id[8];
extern uint8_t camd35_node_id[8];
uint8_t cacheex_peer_id[8];
extern CS_MUTEX_LOCK ecm_pushed_deleted_lock;
extern struct ecm_request_t *ecm_pushed_deleted;
extern CS_MUTEX_LOCK ecmcache_lock;
extern struct ecm_request_t *ecmcwcache;
// HIT CACHE functions **************************************************************
typedef struct hit_key_t {
uint16_t caid;
uint32_t prid;
uint16_t srvid;
} HIT_KEY;
typedef struct cache_hit_t {
HIT_KEY key;
struct timeb time;
struct timeb max_hitcache_time;
uint64_t grp;
uint64_t grp_last_max_hitcache_time;
#ifdef CS_CACHEEX_AIO
int32_t waittime_block;
#endif
node ht_node;
node ll_node;
} CACHE_HIT;
static pthread_rwlock_t hitcache_lock;
static hash_table ht_hitcache;
static list ll_hitcache;
static bool cacheex_running;
void cacheex_init_hitcache(void)
{
init_hash_table(&ht_hitcache, &ll_hitcache);
if (pthread_rwlock_init(&hitcache_lock,NULL) != 0)
cs_log("Error creating lock hitcache_lock!");
cacheex_running = true;
}
void cacheex_free_hitcache(void)
{
cacheex_running = false;
cacheex_cleanup_hitcache(true);
deinitialize_hash_table(&ht_hitcache);
pthread_rwlock_destroy(&hitcache_lock);
}
static int cacheex_compare_hitkey(const void *arg, const void *obj)
{
if(((const HIT_KEY*)arg)->caid==((const CACHE_HIT*)obj)->key.caid
&& ((const HIT_KEY*)arg)->prid==((const CACHE_HIT*)obj)->key.prid
&& ((const HIT_KEY*)arg)->srvid==((const CACHE_HIT*)obj)->key.srvid)
{
return 0;
}
return 1;
}
static int32_t cacheex_check_hitcache(ECM_REQUEST *er, struct s_client *cl)
{
CACHE_HIT *result;
HIT_KEY search;
memset(&search, 0, sizeof(HIT_KEY));
search.caid = er->caid;
search.prid = er->prid;
search.srvid = er->srvid;
SAFE_RWLOCK_RDLOCK(&hitcache_lock);
result = find_hash_table(&ht_hitcache, &search, sizeof(HIT_KEY), &cacheex_compare_hitkey);
if(result){
struct timeb now;
cs_ftime(&now);
int64_t gone = comp_timeb(&now, &result->time);
uint64_t grp = cl?cl->grp:0;
if(
gone <= (cfg.max_hitcache_time*1000)
&&
(!grp || !result->grp || (grp & result->grp))
#ifdef CS_CACHEEX_AIO
&&
result->waittime_block <= cfg.waittime_block_start
#endif
)
{
SAFE_RWLOCK_UNLOCK(&hitcache_lock);
return 1;
}
}
SAFE_RWLOCK_UNLOCK(&hitcache_lock);
return 0;
}
static void cacheex_add_hitcache(struct s_client *cl, ECM_REQUEST *er)
{
if (!cfg.max_hitcache_time) // we don't want check/save hitcache
return;
if (!cfg.cacheex_wait_timetab.cevnum)
return;
uint32_t cacheex_wait_time = get_cacheex_wait_time(er,NULL);
if (!cacheex_wait_time)
return;
CACHE_HIT *result;
HIT_KEY search;
memset(&search, 0, sizeof(HIT_KEY));
search.caid = er->caid;
search.prid = er->prid;
search.srvid = er->srvid;
SAFE_RWLOCK_WRLOCK(&hitcache_lock);
result = find_hash_table(&ht_hitcache, &search, sizeof(HIT_KEY), &cacheex_compare_hitkey);
if(!result) // not found, add it!
{
if(cs_malloc(&result, sizeof(CACHE_HIT)))
{
memset(result, 0, sizeof(CACHE_HIT));
result->key.caid = er->caid;
result->key.prid = er->prid;
result->key.srvid = er->srvid;
cs_ftime(&result->max_hitcache_time);
#ifdef CS_CACHEEX_AIO
result->waittime_block = 0;
#endif
add_hash_table(&ht_hitcache, &result->ht_node, &ll_hitcache, &result->ll_node, result, &result->key, sizeof(HIT_KEY));
}
}
if(result)
{
if(cl)
{
result->grp |= cl->grp;
result->grp_last_max_hitcache_time |= cl->grp;
}
cs_ftime(&result->time); //always update time;
}
SAFE_RWLOCK_UNLOCK(&hitcache_lock);
}
static void cacheex_del_hitcache(struct s_client *cl, ECM_REQUEST *er)
{
HIT_KEY search;
CACHE_HIT *result;
memset(&search, 0, sizeof(HIT_KEY));
search.caid = er->caid;
search.prid = er->prid;
search.srvid = er->srvid;
if(cl && cl->grp)
{
result = find_hash_table(&ht_hitcache, &search, sizeof(HIT_KEY), &cacheex_compare_hitkey);
while(result)
{
result->grp &= ~cl->grp;
result->grp_last_max_hitcache_time &= ~cl->grp;
result = find_hash_table(&ht_hitcache, &search, sizeof(HIT_KEY), &cacheex_compare_hitkey);
}
}
SAFE_RWLOCK_WRLOCK(&hitcache_lock);
search_remove_elem_hash_table(&ht_hitcache, &search, sizeof(HIT_KEY), &cacheex_compare_hitkey);
SAFE_RWLOCK_UNLOCK(&hitcache_lock);
}
void cacheex_cleanup_hitcache(bool force)
{
CACHE_HIT *cachehit;
node *i,*i_next;
struct timeb now;
int64_t gone, gone_max_hitcache_time;
int32_t timeout = (cfg.max_hitcache_time + (cfg.max_hitcache_time / 2)) * 1000; // 1,5
int32_t clean_grp = (cfg.max_hitcache_time * 1000);
SAFE_RWLOCK_WRLOCK(&hitcache_lock);
i = get_first_node_list(&ll_hitcache);
while (i)
{
i_next = i->next;
cachehit = get_data_from_node(i);
if(!cachehit)
{
i = i_next;
continue;
}
cs_ftime(&now);
gone = comp_timeb(&now, &cachehit->time);
gone_max_hitcache_time = comp_timeb(&now, &cachehit->max_hitcache_time);
if(force || gone>timeout
#ifdef CS_CACHEEX_AIO
|| (cachehit->waittime_block > (cfg.waittime_block_time / 3 + 1))
#endif
)
{
remove_elem_list(&ll_hitcache, &cachehit->ll_node);
remove_elem_hash_table(&ht_hitcache, &cachehit->ht_node);
NULLFREE(cachehit);
}
else if(gone_max_hitcache_time >= clean_grp){
cachehit->grp = cachehit->grp_last_max_hitcache_time;
cachehit->grp_last_max_hitcache_time = 0;
cs_ftime(&cachehit->max_hitcache_time);
}
#ifdef CS_CACHEEX_AIO
if(cfg.waittime_block_start && (cachehit && cachehit->waittime_block >= cfg.waittime_block_start))
{
cachehit->waittime_block++;
}
#endif
i = i_next;
}
SAFE_RWLOCK_UNLOCK(&hitcache_lock);
}
static int32_t cacheex_ecm_hash_calc(uint8_t *buf, int32_t n)
{
int32_t i, h = 0;
for(i = 0; i < n; i++)
{
h = 31 * h + buf[i];
}
return h;
}
void cacheex_update_hash(ECM_REQUEST *er)
{
er->csp_hash = cacheex_ecm_hash_calc(er->ecm + 3, er->ecmlen - 3);
}
void cacheex_free_csp_lastnodes(ECM_REQUEST *er)
{
ll_destroy_free_data(&er->csp_lastnodes);
}
void cacheex_set_csp_lastnode(ECM_REQUEST *er)
{
er->csp_lastnodes = NULL;
}
void cacheex_set_cacheex_src(ECM_REQUEST *ecm, struct s_client *cl)
{
if(ecm->cacheex_src == cl)
ecm->cacheex_src = NULL;
}
void cacheex_init_cacheex_src(ECM_REQUEST *ecm, ECM_REQUEST *er)
{
if(!ecm->cacheex_src)
ecm->cacheex_src = er->cacheex_src;
}
static void *chkcache_process(void)
{
set_thread_name(__func__);
time_t timeout;
struct ecm_request_t *er, *ecm;
uint8_t add_hitcache_er;
struct s_reader *cl_rdr;
struct s_reader *rdr;
struct s_ecm_answer *ea;
struct s_client *cex_src = NULL;
struct s_write_from_cache *wfc = NULL;
while(cacheex_running)
{
cs_readlock(__func__, &ecmcache_lock);
for(er = ecmcwcache; er; er = er->next)
{
timeout = time(NULL) - ((cfg.ctimeout + 500) / 1000 + 1);
if(er->tps.time < timeout)
{ break; }
if(er->rc < E_UNHANDLED || er->readers_timeout_check) // already answered
{ continue; }
// CHECK IF FOUND ECM IN CACHE
ecm = check_cache(er, er->client);
if(ecm) // found in cache
{
// check for add_hitcache
if(ecm->cacheex_src) // cw from cacheex
{
// only when no wait_time expires (or not wait_time)
if((er->cacheex_wait_time && !er->cacheex_wait_time_expired) || !er->cacheex_wait_time)
{
// add_hitcache already called, but we check if we have to call it for these (er) caid|prid|srvid
if(ecm->prid!=er->prid || ecm->srvid!=er->srvid)
{
// here we should be sure cex client has not been freed!
cex_src = ecm->cacheex_src && is_valid_client(ecm->cacheex_src) && !ecm->cacheex_src->kill ? ecm->cacheex_src : NULL;
if(cex_src) // add_hitcache only if client is really active
{
add_hitcache_er = 1;
cl_rdr = cex_src->reader;
if(cl_rdr && cl_rdr->cacheex.mode == 2)
{
for(ea = er->matching_rdr; ea; ea = ea->next)
{
rdr = ea->reader;
if(cl_rdr == rdr && ((ea->status & REQUEST_ANSWERED) == REQUEST_ANSWERED))
{
cs_log_dbg(D_CACHEEX | D_CSP | D_LB,"{client %s, caid %04X, prid %06X, srvid %04X} [CACHEEX] skip ADD self request!",
(check_client(er->client) ? er->client->account->usr : "-"), er->caid, er->prid, er->srvid);
add_hitcache_er=0; // don't add hit cache, reader requested self
}
}
}
// USE cacheex client (to get correct group) and ecm
// from requesting client (to get correct caid|prid|srvid)!!!
if(add_hitcache_er)
{
cacheex_add_hitcache(cex_src, er);
}
}
}
}
else
{
// add_hitcache already called, but we have to remove it because cacheex not coming before wait_time
if(ecm->prid == er->prid && ecm->srvid == er->srvid)
{ cacheex_del_hitcache(er->client, ecm); }
}
}
// END check for add_hitcache
if(check_client(er->client))
{
wfc = NULL;
if(!cs_malloc(&wfc, sizeof(struct s_write_from_cache)))
{
NULLFREE(ecm);
continue;
}
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);
continue;
}
}
else
{
NULLFREE(ecm);
}
}
}
cs_readunlock(__func__, &ecmcache_lock);
cs_sleepms(10);
}
return NULL;
}
void checkcache_process_thread_start(void)
{
start_thread("chkcache_process", (void *)&chkcache_process, NULL, NULL, 1, 1);
}
void cacheex_init(void)
{
// Init random node id
get_random_bytes(cacheex_peer_id, 8);
#ifdef MODULE_CCCAM
memcpy(cacheex_peer_id, cc_node_id, 8);
#endif
#ifdef MODULE_CAMD35_TCP
memcpy(camd35_node_id, cacheex_peer_id, 8);
#endif
}
void cacheex_clear_account_stats(struct s_auth *account)
{
account->cwcacheexgot = 0;
account->cwcacheexpush = 0;
account->cwcacheexhit = 0;
#ifdef CS_CACHEEX_AIO
account->cwcacheexgotlg = 0;
account->cwcacheexpushlg = 0;
#endif
}
void cacheex_clear_client_stats(struct s_client *client)
{
client->cwcacheexgot = 0;
client->cwcacheexpush = 0;
client->cwcacheexhit = 0;
#ifdef CS_CACHEEX_AIO
client->cwcacheexgotlg = 0;
client->cwcacheexpushlg = 0;
#endif
}
int32_t cacheex_add_stats(struct s_client *cl, uint16_t caid, uint16_t srvid, uint32_t prid, uint8_t direction
#ifdef CS_CACHEEX_AIO
, uint8_t localgenerated
#endif
)
{
if(!cfg.cacheex_enable_stats)
{ return -1; }
// create list if doesn't exist
if(!cl->ll_cacheex_stats)
{ cl->ll_cacheex_stats = ll_create("ll_cacheex_stats"); }
time_t now = time((time_t *)0);
LL_ITER itr = ll_iter_create(cl->ll_cacheex_stats);
S_CACHEEX_STAT_ENTRY *cacheex_stats_entry;
// check for existing entry
while((cacheex_stats_entry = ll_iter_next(&itr)))
{
if(cacheex_stats_entry->cache_srvid == srvid &&
cacheex_stats_entry->cache_caid == caid &&
cacheex_stats_entry->cache_prid == prid &&
cacheex_stats_entry->cache_direction == direction)
{
// we already have this entry - just add count and time
cacheex_stats_entry->cache_count++;
#ifdef CS_CACHEEX_AIO
if(localgenerated)
cacheex_stats_entry->cache_count_lg++;
#endif
cacheex_stats_entry->cache_last = now;
return cacheex_stats_entry->cache_count;
}
}
// if we land here we have to add a new entry
if(cs_malloc(&cacheex_stats_entry, sizeof(S_CACHEEX_STAT_ENTRY)))
{
cacheex_stats_entry->cache_caid = caid;
cacheex_stats_entry->cache_srvid = srvid;
cacheex_stats_entry->cache_prid = prid;
cacheex_stats_entry->cache_count = 1;
#ifdef CS_CACHEEX_AIO
if(localgenerated)
cacheex_stats_entry->cache_count_lg = 1;
#endif
cacheex_stats_entry->cache_last = now;
cacheex_stats_entry->cache_direction = direction;
ll_iter_insert(&itr, cacheex_stats_entry);
return 1;
}
return 0;
}
int8_t cacheex_maxhop(struct s_client *cl)
{
int maxhop = 10;
if(cl->reader && cl->reader->cacheex.maxhop)
{ maxhop = cl->reader->cacheex.maxhop; }
else if(cl->account && cl->account->cacheex.maxhop)
{ maxhop = cl->account->cacheex.maxhop; }
return maxhop;
}
#ifdef CS_CACHEEX_AIO
int8_t cacheex_maxhop_lg(struct s_client *cl)
{
int max = 10;
int maxhop = cacheex_maxhop(cl);
int maxhop_lg = maxhop;
if(cl->reader && cl->reader->cacheex.maxhop_lg)
{
if(cl->reader->cacheex.maxhop_lg > max)
{
cl->reader->cacheex.maxhop_lg = max;
}
if(cl->reader->cacheex.maxhop_lg < maxhop)
{
maxhop_lg = maxhop;
}
else
{
maxhop_lg = cl->reader->cacheex.maxhop_lg;
}
cl->reader->cacheex.maxhop_lg = maxhop_lg;
}
else if(cl->account && cl->account->cacheex.maxhop_lg)
{
if(cl->account->cacheex.maxhop_lg > max)
{
cl->account->cacheex.maxhop_lg = max;
}
if(cl->account->cacheex.maxhop_lg < maxhop)
{
maxhop_lg = maxhop;
}
else
{
maxhop_lg = cl->account->cacheex.maxhop_lg;
}
cl->account->cacheex.maxhop_lg = maxhop_lg;
}
return maxhop_lg;
}
#endif
static void cacheex_cache_push_to_client(struct s_client *cl, ECM_REQUEST *er)
{
add_job(cl, ACTION_CACHE_PUSH_OUT, er, 0);
}
/**
* Check for NULL ecmd5
**/
static uint8_t checkECMD5(ECM_REQUEST *er)
{
int8_t i;
for(i = 0; i < CS_ECMSTORESIZE; i++)
if(er->ecmd5[i]) { return 1; }
return 0;
}
#ifdef CS_CACHEEX_AIO
static uint8_t chk_cwcheck(ECM_REQUEST *er, uint8_t cw_check_for_push)
{
if(!cw_check_for_push)
return 1;
CWCHECK check_cw;
check_cw = get_cwcheck(er);
if(check_cw.mode && check_cw.counter > 1)
{
if(er->cw_count >= check_cw.counter)
{
return 1;
}
else
{
cs_log_dbg(D_CACHEEX, "push denied - cacheex_check_cw.counter: %u > er->cw_count: %u", check_cw.counter, er->cw_count);
return 0;
}
}
else
{
return 1;
}
}
#endif
/**
* cacheex modes:
*
* cacheex=1 CACHE PULL:
* Situation: ncam A reader1 has cacheex=1, ncam B account1 has cacheex=1
* ncam A gets a ECM request, reader1 send this request to ncam B, ncam B checks his cache
* a. not found in cache: return NOK
* a. found in cache: return OK+CW
* b. not found in cache, but found pending request: wait max cacheexwaittime and check again
* ncam B never requests new ECMs
*
* CW-flow: B->A
*
* cacheex=2 CACHE PUSH:
* Situation: ncam A reader1 has cacheex=2, ncam B account1 has cacheex=2
* if ncam B gets a CW, its pushed to ncam A
* reader has normal functionality and can request ECMs
*
* Problem: ncam B can only push if ncam A is connected
* Problem or feature?: ncam A reader can request ecms from ncam B
*
* CW-flow: B->A
*
*/
void cacheex_cache_push(ECM_REQUEST *er)
{
if(er->rc >= E_NOTFOUND) { return; }
//cacheex=2 mode: push (server->remote)
struct s_client *cl;
cs_readlock(__func__, &clientlist_lock);
for(cl = first_client->next; cl; cl = cl->next)
{
if(check_client(cl) && er->cacheex_src != cl)
{
if(get_module(cl)->num == R_CSP) // always send to csp cl
{
if(!er->cacheex_src || cfg.csp.allow_reforward) { cacheex_cache_push_to_client(cl, er); } // but not if the origin was cacheex (might loop)
}
else if(cl->typ == 'c' && !cl->dup && cl->account && cl->account->cacheex.mode == 2) // send cache over user
{
if(get_module(cl)->c_cache_push // cache-push able
&& (!er->grp || (cl->grp & er->grp)
#ifdef CS_CACHEEX_AIO
|| (er->localgenerated && ((cl->grp & cfg.cacheex_push_lg_groups) && strcmp(username(cl), username(er->cacheex_src))))
#endif
) // Group-check
/**** OUTGOING FILTER CHECK ***/
&& (!er->selected_reader || !cacheex_reader(er->selected_reader) || !cfg.block_same_name || strcmp(username(cl), er->selected_reader->label)) // check reader mode-1 loopback by same name
&& (!er->selected_reader || !cacheex_reader(er->selected_reader) || !cfg.block_same_ip || (check_client(er->selected_reader->client) && !IP_EQUAL(cl->ip, er->selected_reader->client->ip))) // check reader mode-1 loopback by same ip
&& (!cl->account->cacheex.drop_csp || checkECMD5(er)) // cacheex_drop_csp-check
&& chk_ctab(er->caid, &cl->ctab) // Caid-check
&& (!checkECMD5(er) || chk_ident_filter(er->caid, er->prid, &cl->ftab)) // Ident-check (not for csp: prid=0 always!)
&& chk_srvid(cl, er) // Service-check
&& chk_csp_ctab(er, &cl->account->cacheex.filter_caidtab) // cacheex_ecm_filter
#ifdef CS_CACHEEX_AIO
&& (er->localgenerated // lg-flag-check
|| chk_srvid_localgenerated_only_exception(er) // lg-only-service-exception
|| !(cl->account->cacheex.localgenerated_only // usr-lg-only
|| (
(cl->account->cacheex.feature_bitfield & 64) // cx-aio >= 9.2.6 => check ftab
&& (chk_lg_only(er, &cl->account->cacheex.lg_only_tab) // usr-lg-only-ftab (feature 64)
|| chk_lg_only(er, &cfg.cacheex_lg_only_tab)) // global-lg-only-ftab (feature 64)
)
)
)
&& (chk_cwcheck(er, cl->account->cacheex.cw_check_for_push)) // check cw_check-counter if enabled
&& chk_nopushafter(er->caid, &cl->account->cacheex.cacheex_nopushafter_tab, er->ecm_time) // no push after check
#endif
)
{
cacheex_cache_push_to_client(cl, er);
}
}
}
}
cs_readunlock(__func__, &clientlist_lock);
//cacheex=3 mode: reverse push (reader->server)
cs_readlock(__func__, &readerlist_lock);
cs_readlock(__func__, &clientlist_lock);
struct s_reader *rdr;
for(rdr = first_active_reader; rdr; rdr = rdr->next)
{
cl = rdr->client;
if(check_client(cl) && er->cacheex_src != cl && rdr->cacheex.mode == 3) // send cache over reader
{
if(rdr->ph.c_cache_push // cache-push able
&& (!er->grp || (rdr->grp & er->grp)
#ifdef CS_CACHEEX_AIO
|| (er->localgenerated && ((rdr->grp & cfg.cacheex_push_lg_groups) && strcmp(username(cl), username(er->cacheex_src))))
#endif
) // Group-check
/**** OUTGOING FILTER CHECK ***/
&& (!er->selected_reader || !cacheex_reader(er->selected_reader) || !cfg.block_same_name || strcmp(username(cl), er->selected_reader->label)) // check reader mode-1 loopback by same name
&& (!er->selected_reader || !cacheex_reader(er->selected_reader) || !cfg.block_same_ip || (check_client(er->selected_reader->client) && !IP_EQUAL(cl->ip, er->selected_reader->client->ip))) // check reader mode-1 loopback by same ip
&& (!rdr->cacheex.drop_csp || checkECMD5(er)) // cacheex_drop_csp-check
&& chk_ctab(er->caid, &rdr->ctab) // Caid-check
&& (!checkECMD5(er) || chk_ident_filter(er->caid, er->prid, &rdr->ftab)) // Ident-check (not for csp: prid=0 always!)
&& chk_srvid(cl, er) // Service-check
&& chk_csp_ctab(er, &rdr->cacheex.filter_caidtab) // cacheex_ecm_filter
#ifdef CS_CACHEEX_AIO
&& (er->localgenerated // lg-only-check
|| chk_srvid_localgenerated_only_exception(er) // service-exception
|| !(rdr->cacheex.localgenerated_only // rdr-lg-only
|| (
(rdr->cacheex.feature_bitfield & 64) // cx-aio >= 9.2.6 => check ftab
&& (chk_lg_only(er, &rdr->cacheex.lg_only_tab) // rdr-lg-only-ftab (feature 64)
|| chk_lg_only(er, &cfg.cacheex_lg_only_tab)) // global-lg-only-ftab (feature 64)
)
)
)
&& (chk_cwcheck(er, rdr->cacheex.cw_check_for_push)) // check cw_check-counter if enabled
&& chk_nopushafter(er->caid, &rdr->cacheex.cacheex_nopushafter_tab, er->ecm_time)
#endif
) // no push after check
{
cacheex_cache_push_to_client(cl, er);
}
}
}
cs_readunlock(__func__, &clientlist_lock);
cs_readunlock(__func__, &readerlist_lock);
}
/**** INCOMING FILTER CHECK ***/
uint8_t check_cacheex_filter(struct s_client *cl, ECM_REQUEST *er)
{
if(check_client(cl) && cl->typ == 'p' && cl->reader && cl->reader->cacheex.mode == 2
&& (!cl->reader->cacheex.drop_csp || checkECMD5(er)) // cacheex_drop_csp-check
&& chk_ctab(er->caid, &cl->reader->ctab) // Caid-check
&& (!checkECMD5(er) || chk_ident_filter(er->caid, er->prid, &cl->reader->ftab)) // Ident-check (not for csp: prid=0 always!)
&& chk_srvid(cl, er)) // Service-check
{
return 1;
}
if(check_client(cl) && cl->typ == 'c' && cl->account && cl->account->cacheex.mode == 3
&& (!cl->account->cacheex.drop_csp || checkECMD5(er)) // cacheex_drop_csp-check
&& chk_ctab(er->caid, &cl->ctab) // Caid-check
&& (!checkECMD5(er) || chk_ident_filter(er->caid, er->prid, &cl->ftab)) // Ident-check (not for csp: prid=0 always!)
&& chk_srvid(cl, er)) // Service-check
{
return 1;
}
free_ecm(er);
return 0;
}
static struct s_cacheex_matcher *is_cacheex_matcher_matching(ECM_REQUEST *from_er, ECM_REQUEST *to_er)
{
struct s_cacheex_matcher *entry = cfg.cacheex_matcher;
int8_t v_ok = (from_er && to_er) ? 2 : 1;
while(entry)
{
int8_t ok = 0;
if(from_er
&& (!entry->caid || entry->caid == from_er->caid)
&& (!entry->provid || entry->provid == from_er->prid)
&& (!entry->srvid || entry->srvid == from_er->srvid)
&& (!entry->chid || entry->chid == from_er->chid)
&& (!entry->pid || entry->pid == from_er->pid)
&& (!entry->ecmlen || entry->ecmlen == from_er->ecmlen))
{ ok++; }
if(to_er
&& (!entry->to_caid || entry->to_caid == to_er->caid)
&& (!entry->to_provid || entry->to_provid == to_er->prid)
&& (!entry->to_srvid || entry->to_srvid == to_er->srvid)
&& (!entry->to_chid || entry->to_chid == to_er->chid)
&& (!entry->to_pid || entry->to_pid == to_er->pid)
&& (!entry->to_ecmlen || entry->to_ecmlen == to_er->ecmlen))
{ ok++; }
if(ok == v_ok)
{
if(!from_er || !to_er || from_er->srvid == to_er->srvid)
{ return entry; }
}
entry = entry->next;
}
return NULL;
}
bool cacheex_is_match_alias(struct s_client *cl, ECM_REQUEST *er)
{
return check_client(cl) && cl->account && cl->account->cacheex.mode == 1 && is_cacheex_matcher_matching(NULL, er);
}
#ifdef WITH_DEBUG
static void log_cacheex_cw(ECM_REQUEST *er, char *reason)
{
uint8_t *data;
uint8_t remotenodeid[8];
data = ll_last_element(er->csp_lastnodes);
if(data)
{ memcpy(remotenodeid, data, 8); }
else
{ memset(remotenodeid, 0 , 8); }
char buf_ecm[109];
format_ecm(er, buf_ecm, 109);
cs_log_dbg(D_CACHEEX,"got pushed ecm [%s]: %s - odd/even 0x%x - CSP cw: %s - pushed from %s, at hop %d, origin node-id %" PRIu64 "X",
reason, buf_ecm, er->ecm[0], (checkECMD5(er)?"NO":"YES"), er->from_csp ? "csp" : username((er->cacheex_src?er->cacheex_src:er->client)), ll_count(er->csp_lastnodes), er->csp_lastnodes ? cacheex_node_id(remotenodeid): 0);
}
#endif
// check if sky_ger 64 bit CW has valid checksum bytes and therefore is probably invalid
uint8_t check_nds_cwex(ECM_REQUEST *er)
{
uint8_t k, csum;
uint8_t hit = 0;
uint8_t oe = checkCWpart(er->cw, 0) ? 0 : 8;
for(k = 0; k < 8; k += 4)
{
csum = ((er->cw[k + oe] + er->cw[k + oe + 1] + er->cw[k + oe + 2]) & 0xff);
if(er->cw[k + oe + 3] == csum)
{
hit++;
}
}
if(hit > 1)
{
return 1;
}
return 0;
}
static int32_t cacheex_add_to_cache_int(struct s_client *cl, ECM_REQUEST *er, int8_t csp)
{
if(er->rc >= E_NOTFOUND) { return 0; }
if(!cl)
{ return 0; }
if(!csp && cl->reader && cl->reader->cacheex.mode != 2) //from reader
{
cs_log_dbg(D_CACHEEX, "CACHEX received, but disabled for %s", username(cl));
return 0;
}
if(!csp && !cl->reader && cl->account && cl->account->cacheex.mode != 3) //from user
{
cs_log_dbg(D_CACHEEX, "CACHEX received, but disabled for %s", username(cl));
return 0;
}
if(!csp && !cl->reader && !cl->account) //not active!
{
cs_log_dbg(D_CACHEEX, "CACHEX received, but invalid client state %s", username(cl));
return 0;
}
if(!cfg.disablecrccws && ((cl->typ == 'c' && cl->account && !cl->account->disablecrccacheex) || ( cl->typ == 'p' && cl->reader && !cl->reader->disablecrccws)))
{
uint8_t selectedForIgnChecksum = chk_if_ignore_checksum(er, &cfg.disablecrccws_only_for);
if(cl->typ == 'c')
{
selectedForIgnChecksum += chk_if_ignore_checksum(er, &cl->account->disablecrccacheex_only_for);
}
if(cl->typ == 'p')
{
selectedForIgnChecksum += chk_if_ignore_checksum(er, &cl->reader->disablecrccws_only_for);
}
if(!selectedForIgnChecksum)
{
uint8_t i, c;
for(i = 0; i < 16; i += 4)
{
c = ((er->cw[i] + er->cw[i + 1] + er->cw[i + 2]) & 0xff);
if(er->cw[i + 3] != c)
{
cs_log_dump_dbg(D_CACHEEX, er->cw, 16, "push received cw with chksum error from %s", csp ? "csp" : username(cl));
cl->cwcacheexerr++;
if(cl->account)
{ cl->account->cwcacheexerr++; }
return 0;
}
}
}
}
#ifdef CS_CACHEEX_AIO
if(caid_is_videoguard(er->caid))
{
if(cl->typ == 'p' && chk_if_ignore_checksum(er, &cl->reader->disablecrccws_only_for) && !chk_srvid_disablecrccws_only_for_exception(er))
{
if(check_nds_cwex(er))
{
if(check_client(cl) && cl->reader && cl->reader->dropbadcws)
{
if (((D_CACHEEX) & cs_dblevel)) // avoid useless operations if debug is not enabled
{
uint8_t remotenodeid[8];
cacheex_get_srcnodeid(er, remotenodeid);
cs_log_dbg(D_CACHEEX, "Probably got pushed bad CW from cacheex reader: %s, caid %04X, srvid %04X - dropping CW, lg: %i, hop: %i, src-nodeid %" PRIu64 "X", cl->reader->label, er->caid, er->srvid, er->localgenerated, ll_count(er->csp_lastnodes), er->csp_lastnodes ? cacheex_node_id(remotenodeid): 0);
}
return 0;
}
else
{
if (((D_CACHEEX) & cs_dblevel)) // avoid useless operations if debug is not enabled
{
uint8_t remotenodeid[8];
cacheex_get_srcnodeid(er, remotenodeid);
cs_log_dbg(D_CACHEEX, "Probably got pushed bad CW from cacheex reader: %s, caid %04X, srvid %04X, lg: %i, hop: %i, src-nodeid %" PRIu64 "X", cl->reader->label, er->caid, er->srvid, er->localgenerated, ll_count(er->csp_lastnodes), er->csp_lastnodes ? cacheex_node_id(remotenodeid): 0);
}
}
}
}
if(cl->typ == 'c' && chk_if_ignore_checksum(er, &cl->account->disablecrccacheex_only_for) && !chk_srvid_disablecrccws_only_for_exception(er))
{
if(check_nds_cwex(er))
{
if (((D_CACHEEX) & cs_dblevel)) // avoid useless operations if debug is not enabled
{
uint8_t remotenodeid[8];
cacheex_get_srcnodeid(er, remotenodeid);
cs_log_dbg(D_CACHEEX, "Probably got bad CW from cacheex user: %s, caid %04X, srvid %04X, lg: %i, hop: %i, src-nodeid %" PRIu64 "X", username(cl), er->caid, er->srvid, er->localgenerated, ll_count(er->csp_lastnodes), er->csp_lastnodes ? cacheex_node_id(remotenodeid): 0);
}
}
}
}
#endif
// Skip check for BISS1 - cw could be indeed zero
// Skip check for BISS2 - we use the extended cw, so the "simple" cw is always zero
if(chk_is_null_CW(er->cw) && !caid_is_biss(er->caid))
{
cs_log_dump_dbg(D_CACHEEX, er->cw, 16, "push received null cw from %s", csp ? "csp" : username(cl));
cl->cwcacheexerr++;
if(cl->account)
{ cl->account->cwcacheexerr++; }
return 0;
}
// Don't check for BISS1 and BISS2 mode 1/E or fake caid (ECM is fake for them)
// Don't check for BISS2 mode CA (ECM table is always 0x80)
if(!caid_is_biss(er->caid) && !caid_is_fake(er->caid) && get_odd_even(er) == 0)
{
cs_log_dbg(D_CACHEEX, "push received ecm with null odd/even byte from %s", csp ? "csp" : username(cl));
cl->cwcacheexerr++;
if(cl->account)
{ cl->account->cwcacheexerr++; }
return 0;
}
if(!chk_halfCW(er, er->cw))
{
#ifdef WITH_DEBUG
if(cs_dblevel & D_CACHEEX)
{
log_cacheex_cw(er, "bad half cw");
}
#endif
cl->cwcacheexerr++;
if(cl->account)
{ cl->account->cwcacheexerr++; }
return 0;
}
if((csp && cfg.csp.block_fakecws) || (cl->reader && cl->reader->cacheex.block_fakecws)
|| (!cl->reader && cl->account && cl->account->cacheex.block_fakecws))
{
if(chk_is_fakecw(er->cw))
{
cs_log_dbg(D_CACHEEX, "push received fake cw from %s", csp ? "csp" : username(cl));
cl->cwcacheexerr++;
if(cl->account)
{ cl->account->cwcacheexerr++; }
return 0;
}
}
er->grp |= cl->grp; // ok for mode2 reader too: cl->reader->grp
er->rc = E_CACHEEX;
er->cacheex_src = cl;
er->selected_reader = cl->reader;
er->client = NULL; // No Owner! So no fallback!
if(check_client(cl))
{
cl->cwcacheexgot++;
if(cl->account)
{ cl->account->cwcacheexgot++; }
first_client->cwcacheexgot++;
#ifdef CS_CACHEEX_AIO
if(er->localgenerated)
{
cl->cwcacheexgotlg++;
if(cl->account)
cl->account->cwcacheexgotlg++;
first_client->cwcacheexgotlg++;
}
#endif
}
cacheex_add_hitcache(cl, er); // we have to call it before add_cache, because in chk_process we could remove it!
add_cache(er);
#ifdef CS_CACHEEX_AIO
cacheex_add_stats(cl, er->caid, er->srvid, er->prid, 1, er->localgenerated);
#else
cacheex_add_stats(cl, er->caid, er->srvid, er->prid, 1);