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module-camd35.c
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module-camd35.c
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#define MODULE_LOG_PREFIX "camd35"
#include "globals.h"
#if defined MODULE_CAMD35 || defined MODULE_CAMD35_TCP
#include "cscrypt/md5.h"
#include "module-cacheex.h"
#include "module-camd35.h"
#include "module-camd35-cacheex.h"
#include "oscam-aes.h"
#include "oscam-chk.h"
#include "oscam-cache.h"
#include "oscam-client.h"
#include "oscam-ecm.h"
#include "oscam-emm.h"
#include "oscam-net.h"
#include "oscam-string.h"
#include "oscam-reader.h"
//CMD00 - ECM (request)
//CMD01 - ECM (response)
//CMD02 - EMM (in clientmode - set EMM, in server mode - EMM data) - obsolete
//CMD03 - ECM (cascading request)
//CMD04 - ECM (cascading response)
//CMD05 - EMM (emm request) send cardata/cardinfo to client
//CMD06 - EMM (incomming EMM in server mode)
//CMD19 - EMM (incomming EMM in server mode) only seen with caid 0x1830
//CMD08 - Stop sending requests to the server for current srvid, prvid, caid
//CMD44 - MPCS/OScam internal error notification
//CMD55 - connect_on_init/keepalive
//CMD0x3c - CACHEEX Cache-push filter request
//CMD0x3d - CACHEEX Cache-push id request
//CMD0x3e - CACHEEX Cache-push id answer
//CMD0x3f - CACHEEX cache-push
//used variable ncd_skey for storing remote node id: ncd_skey[0..7] : 8
//bytes node id ncd_skey[8] : 1=valid node id received
#define REQ_SIZE 20 + MAX_ECM_SIZE + 0x34
static int32_t __camd35_send(struct s_client *cl, uint8_t *buf, int32_t buflen, int answer_awaited)
{
int32_t l, status;
uint8_t rbuf[4 + REQ_SIZE + 15];
uint8_t *sbuf = rbuf + 4;
if(!cl->udp_fd || !cl->crypted)
{
return -1; // exit if no fd or aes key not set
}
// Fix ECM len > 255
if(buflen <= 0)
{
buflen = (buf[0] == 0) ? (((buf[21] & 0x0F) << 8) | buf[22]) + 3 : buf[1];
}
l = 20 + (((buf[0] == 3) || (buf[0] == 4)) ? 0x34 : 0) + buflen;
memcpy(rbuf, cl->ucrc, 4);
memcpy(sbuf, buf, l);
memset(sbuf + l, 0xFF, 15); // set unused space to 0xFF for newer camd3's
i2b_buf(4, crc32(0L, sbuf + 20, buflen), sbuf + 4);
l = boundary(4, l);
cs_log_dump_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, sbuf, l, "send %d bytes to %s", l, username(cl));
aes_encrypt_idx(cl->aes_keys, sbuf, l);
if(cl->is_udp)
{
status = sendto(cl->udp_fd, rbuf, l + 4, 0, (struct sockaddr *)&cl->udp_sa, cl->udp_sa_len);
if(status == -1)
{
set_null_ip(&SIN_GET_ADDR(cl->udp_sa));
}
}
else
{
status = send(cl->udp_fd, rbuf, l + 4, 0);
if(cl->typ == 'p' && cl->reader)
{
if(status == -1)
{
network_tcp_connection_close(cl->reader, "can't send");
}
}
else if(cl->typ == 'c')
{
if(status == -1)
{
cs_disconnect_client(cl);
}
}
}
if(status != -1)
{
if(cl->reader && answer_awaited)
{
cl->reader->last_s = time(NULL);
}
if(cl->reader && !answer_awaited)
{
cl->reader->last_s = cl->reader->last_g = time(NULL);
}
cl->last = time(NULL);
}
return status;
}
int32_t camd35_send(struct s_client *cl, uint8_t *buf, int32_t buflen)
{
// send command and set sending time because we await response
return __camd35_send(cl, buf, buflen, 1);
}
int32_t camd35_send_without_timeout(struct s_client *cl, uint8_t *buf, int32_t buflen)
{
// send command and do NOT set sending time because we DON'T await response
return __camd35_send(cl, buf, buflen, 0);
}
static int32_t camd35_auth_client(struct s_client *cl, uint8_t *ucrc)
{
int32_t rc = 1, no_delay = 1;
uint32_t crc;
struct s_auth *account;
uint8_t md5tmp[MD5_DIGEST_LENGTH];
if(cl->upwd[0])
{
return memcmp(cl->ucrc, ucrc, 4) ? 1 : 0;
}
cl->crypted = 1;
crc = ((ucrc[0] << 24) | (ucrc[1] << 16) | (ucrc[2] << 8) | ucrc[3]) & 0xffffffffL;
for(account = cfg.account; account && (!cl->upwd[0]); account = account->next)
{
if(crc == crc32(0L, MD5((uint8_t *)account->usr, cs_strlen(account->usr), md5tmp), MD5_DIGEST_LENGTH))
{
rc = cs_auth_client(cl, account, NULL);
if(!rc)
{
memcpy(cl->ucrc, ucrc, 4);
cs_strncpy((char *)cl->upwd, account->pwd, sizeof(cl->upwd));
if(!aes_set_key_alloc(&cl->aes_keys, (char *) MD5(cl->upwd, cs_strlen((char *)cl->upwd), md5tmp)))
{
return 1;
}
#ifdef CS_CACHEEX
if(cl->account->cacheex.mode < 2)
#endif
if(!cl->is_udp && cl->tcp_nodelay == 0)
{
setsockopt(cl->udp_fd, IPPROTO_TCP, TCP_NODELAY, (void *)&no_delay, sizeof(no_delay));
cl->tcp_nodelay = 1;
}
return 0;
}
}
}
return (rc);
}
static int32_t camd35_recv(struct s_client *client, uint8_t *buf, int32_t l)
{
int32_t rc, s, rs, n = 0, buflen = 0, len = 0;
for(rc = rs = s = 0; !rc; s++)
{
switch(s)
{
case 0:
{
if(!client->udp_fd)
{
return -9;
}
if(client->is_udp && client->typ == 'c')
{
rs = recv_from_udpipe(buf);
}
else
{
// read minimum packet size (4 byte ucrc + 32 byte data)
// to detect packet size (tcp only)
//rs = cs_recv(client->udp_fd, buf, client->is_udp ? l : 36, 0);
if(client->is_udp)
{
while (1)
{
rs = cs_recv(client->udp_fd, buf, l, 0);
if(rs < 0)
{
if(errno == EINTR)
{
continue; // try again in case of interrupt
}
if(errno == EAGAIN)
{
continue; // EAGAIN needs select procedure again
}
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER, "ERROR: %s (errno=%d %s)",
__func__, errno, strerror(errno));
break;
}
else
{
break;
}
}
}
else
{
int32_t tot = 36, readed = 0;
rs = 0;
do
{
readed = cs_recv(client->udp_fd, buf + rs, tot, 0);
if(readed < 0)
{
if(errno == EINTR)
{
continue; // try again in case of interrupt
}
if(errno == EAGAIN)
{
continue; // EAGAIN needs select procedure again
}
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER, "ERROR: %s (errno=%d %s)",
__func__, errno, strerror(errno));
break;
}
if(readed == 0) // nothing to read left!
{
rc = -5;
break;
}
if(readed > 0) // received something, add it!
{
tot -= readed;
rs += readed;
}
}
while(tot != 0);
}
}
if(rs < 36)
{
if(rc != -5)
{
rc = -1;
}
goto out;
}
break;
}
case 1:
{
switch(camd35_auth_client(client, buf))
{
case 0:
#ifdef CS_CACHEEX_AIO
if(!client->c35_extmode)
{
camd35_send_extmode(client, false);
client->c35_extmode = 1;
}
#endif
break; // ok
case 1:
rc = -2;
break; // unknown user
default:
rc = -9;
break; // error's from cs_auth()
}
memmove(buf, buf + 4, rs -= 4);
break;
}
case 2:
{
aes_decrypt(client->aes_keys, buf, rs);
if(rs != boundary(4, rs))
{
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER,
"WARNING: packet size has wrong decryption boundary");
}
n = (buf[0] == 3) ? 0x34 : 0;
// Fix for ECM request size > 255 (use ecm length field)
if(buf[0] == 0)
{
buflen = (((buf[21] & 0x0F) << 8) | buf[22]) + 3;
}
else if(
#ifdef CS_CACHEEX_AIO
buf[0] == 0x40 || buf[0] == 0x41 || buf[0] == 0x42 ||
#endif
buf[0] == 0x3D || buf[0] == 0x3E || buf[0] == 0x3F
) // cacheex-push
{
buflen = buf[1] | (buf[2] << 8);
}
else
{
buflen = buf[1];
}
n = boundary(4, n + 20 + buflen);
if(!(client->is_udp && client->typ == 'c') && (rs < n) && ((n - 32) > 0))
{
//len = cs_recv(client->udp_fd, buf+32, n-32, 0); // read the rest of the packet
int32_t tot = n - 32;
int32_t readed = 0;
len = 0;
do
{
readed = cs_recv(client->udp_fd, buf + 32 + len, tot, 0); // read the rest of the packet
if(readed < 0)
{
if(errno == EINTR)
{
continue; // try again in case of interrupt
}
if(errno == EAGAIN)
{
continue; // EAGAIN needs select procedure again
}
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER, "ERROR: %s (errno=%d %s)",
__func__, errno, strerror(errno));
break;
}
if(readed == 0) // nothing to read left
{
break;
}
if(readed > 0) // received something, add it
{
tot -= readed;
len += readed;
}
}
while(tot != 0);
if(len > 0)
{
rs += len;
aes_decrypt(client->aes_keys, buf + 32, len);
}
if(len < 0)
{
rc = -1;
goto out;
}
}
cs_log_dump_dbg(client->typ == 'c' ? D_CLIENT : D_READER, buf, rs, "received %d bytes from %s",
rs, remote_txt());
if(n < rs)
{
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER, "ignoring %d bytes of garbage", rs - n);
}
else if(n > rs)
{
rc = -3;
}
break;
}
case 3:
{
if(crc32(0L, buf + 20, buflen) != b2i(4, buf + 4))
{
rc = -4;
}
if(!rc)
{
rc = n;
}
break;
}
}
}
out:
if((rs > 0) && ((rc == -1) || (rc == -2)))
{
cs_log_dump_dbg(client->typ == 'c' ? D_CLIENT : D_READER, buf, rs,
"received %d bytes from %s (native)", rs, remote_txt());
}
if(rc >= 0)
{
client->last = time(NULL); // last client action is now
}
switch(rc)
{
//case 0:
// break;
case -1:
cs_log("packet is too small (received %d bytes, expected %d bytes)", rs, l);
break;
case -2:
if(cs_auth_client(client, 0, "unknown user"))
{
cs_disconnect_client(client);
}
break;
case -3:
cs_log("incomplete request!");
break;
case -4:
cs_log("checksum error (wrong password?)");
break;
case -5:
cs_log_dbg(client->typ == 'c' ? D_CLIENT : D_READER, "connection closed");
break;
//default:
// cs_log_dbg(D_TRACE, "camd35_recv returns rc=%d", rc);
// break;
}
return (rc);
}
/*
* server functions
*/
static void camd35_request_emm(ECM_REQUEST *er)
{
int32_t i;
time_t now;
uint8_t mbuf[1024];
struct s_client *cl = cur_client();
struct s_reader *aureader = NULL, *rdr = NULL;
if(er->selected_reader && !er->selected_reader->audisabled
&& ll_contains(cl->aureader_list, er->selected_reader))
{
aureader = er->selected_reader;
}
if(!aureader && cl->aureader_list)
{
LL_ITER itr = ll_iter_create(cl->aureader_list);
while((rdr = ll_iter_next(&itr)))
{
if(emm_reader_match(rdr, er->caid, er->prid))
{
aureader = rdr;
break;
}
}
}
if(!aureader)
{
return; // TODO
}
uint16_t au_caid = aureader->caid;
// Bulcrypt has two caids and aureader->caid can't be used.
// Use ECM_REQUEST caid for AU.
if(!au_caid && caid_is_bulcrypt(er->caid))
{
au_caid = er->caid;
}
time(&now);
if(!memcmp(cl->lastserial, aureader->hexserial, 8))
{
if(llabs(now - cl->last) < 180)
{
return;
}
}
memcpy(cl->lastserial, aureader->hexserial, 8);
cl->last = now;
if(au_caid)
{
cl->disable_counter = 0;
cs_log("%s emm-request sent (reader=%s, caid=%04X, auprovid=%06X)", username(cur_client()),
aureader->label, au_caid, aureader->auprovid ? aureader->auprovid : b2i(4, aureader->prid[0]));
}
else if(cl->disable_counter > 2)
{
return;
}
else
{
cl->disable_counter++;
}
memset(mbuf, 0, sizeof(mbuf));
mbuf[2] = mbuf[3] = 0xFF; // must not be zero
i2b_buf(2, er->srvid, mbuf + 8);
// override request provid with auprovid if set in CMD05
if(aureader->auprovid)
{
if(aureader->auprovid != er->prid)
{
i2b_buf(4, aureader->auprovid, mbuf + 12);
}
else
{
i2b_buf(4, er->prid, mbuf + 12);
}
}
else
{
i2b_buf(4, er->prid, mbuf + 12);
}
i2b_buf(2, er->pid, mbuf + 16);
mbuf[0] = 5;
mbuf[1] = 111;
if(au_caid)
{
mbuf[39] = 1; // no. caids
mbuf[20] = au_caid >> 8; // caid's (max 8)
mbuf[21] = au_caid & 0xFF;
memcpy(mbuf + 40, aureader->hexserial, 6); // serial now 6 bytes
mbuf[47] = aureader->nprov;
for(i = 0; i < aureader->nprov; i++)
{
if(caid_is_betacrypt(au_caid) || caid_is_irdeto(au_caid))
{
mbuf[48 + (i * 5)] = aureader->prid[i][0];
memcpy(&mbuf[50 + (i * 5)], &aureader->prid[i][1], 3);
}
else
{
mbuf[48 + (i * 5)] = aureader->prid[i][2];
mbuf[49 + (i * 5)] = aureader->prid[i][3];
memcpy(&mbuf[50 + (i * 5)], &aureader->sa[i][0], 4); // for conax we need at least 4 bytes
}
}
// we think client/server protocols should deliver
// all information, and only readers should discard EMM
mbuf[128] = (aureader->blockemm & EMM_GLOBAL && !(aureader->saveemm & EMM_GLOBAL)) ? 0 : 1;
mbuf[129] = (aureader->blockemm & EMM_SHARED && !(aureader->saveemm & EMM_SHARED)) ? 0 : 1;
mbuf[130] = (aureader->blockemm & EMM_UNIQUE && !(aureader->saveemm & EMM_UNIQUE)) ? 0 : 1;
mbuf[127] = (aureader->blockemm & EMM_UNKNOWN && !(aureader->saveemm & EMM_UNKNOWN)) ? 0 : 1;
}
else // disable emm
{
mbuf[20] = mbuf[39] = mbuf[40] = mbuf[47] = mbuf[49] = 1;
}
memcpy(mbuf + 10, mbuf + 20, 2);
camd35_send(cl, mbuf, 0); // send with data-len 111 for camd3 > 3.890
mbuf[1]++;
camd35_send(cl, mbuf, 0); // send with data-len 112 for camd3 < 3.890
}
static void camd35_send_dcw(struct s_client *client, ECM_REQUEST *er)
{
uint8_t *buf;
buf = er->src_data; // get orig request
if(!buf)
{
rdr_log(client->reader, "ERROR: src_data missing");
return;
}
if(er->rc == E_INVALID && !client->c35_suppresscmd08) // send normal CMD08
{
buf[0] = 0x08;
buf[1] = 2;
memset(buf + 20, 0, buf[1]);
buf[22] = er->rc; // put rc in byte 22 - hopefully don't break legacy camd3
}
else if(er->rc == E_STOPPED) // send sleep CMD08
{
buf[0] = 0x08;
buf[1] = 2;
buf[20] = 0;
buf[21] = 0xFF;
cs_log("%s stop request send", client->account->usr);
}
else
{
// Send CW
if((er->rc < E_NOTFOUND) || (er->rc == E_FAKE))
{
if(buf[0] == 3)
{
memmove(buf + 20 + 16, buf + 20 + buf[1], 0x34);
}
#ifdef CS_CACHEEX_AIO
if(er->localgenerated && client->c35_extmode > 1)
{
buf[0] += 0x51; // ecm response with lg-flag
}
else
{
#endif
buf[0]++; // ecm response (CMD01 or CMD04)
#ifdef CS_CACHEEX_AIO
}
#endif
buf[1] = 16;
camd35_cacheex_init_dcw(client, er);
memcpy(buf + 20, er->cw, buf[1]);
}
else
{
// Send old CMD44 to prevent cascading
// problems with older mpcs/oscam versions
buf[0] = 0x44;
buf[1] = 0;
}
}
camd35_send(client, buf, 0);
camd35_request_emm(er);
}
static void camd35_process_ecm(uint8_t *buf, int buflen)
{
ECM_REQUEST *er;
if(!buf || buflen < 23)
{
return;
}
uint16_t ecmlen = SCT_LEN((&buf[20]));
if(ecmlen > MAX_ECM_SIZE || ecmlen + 20 > buflen || ecmlen < 4)
{
return;
}
if(!(er = get_ecmtask()))
{
return;
}
er->ecmlen = ecmlen;
if(!cs_malloc(&er->src_data, 0x34 + 20 + er->ecmlen))
{
NULLFREE(er);
return;
}
memcpy(er->src_data, buf, 0x34 + 20 + er->ecmlen); // save request
er->srvid = b2i(2, buf + 8);
er->caid = b2i(2, buf + 10);
er->prid = b2i(4, buf + 12);
//er->idx = b2i(2, buf + 16); // ecmtask idx (see camd35_recv_chk)
memcpy(er->ecm, buf + 20, er->ecmlen);
get_cw(cur_client(), er);
}
static void camd35_process_emm(uint8_t *buf, int buflen, int emmlen)
{
EMM_PACKET epg;
if(!buf || buflen < 20 || emmlen + 20 > buflen)
{
return;
}
memset(&epg, 0, sizeof(epg));
epg.emmlen = emmlen;
if(epg.emmlen < 3 || epg.emmlen > MAX_EMM_SIZE)
{
return;
}
memcpy(epg.caid, buf + 10, 2);
memcpy(epg.provid, buf + 12 , 4);
memcpy(epg.emm, buf + 20, epg.emmlen);
do_emm(cur_client(), &epg);
}
int32_t camd35_tcp_connect(struct s_client *cl)
{
if(cl->is_udp) // check for udp client
{
if(!IP_ISSET(SIN_GET_ADDR(cl->udp_sa))) // check ip is set
{
if(!(hostResolve(cl->reader))) // no ip -> try to resolve ip of client
{
network_tcp_connection_close(cl->reader, "no ip");
return 0;
}
}
}
if(!cl->reader->tcp_connected) // client not connected
{
int32_t handle = 0;
handle = network_tcp_connection_open(cl->reader); // try to connect
if(handle < 0) // got no handle -> error!
{
cl->reader->last_s = 0; // set last send to zero
cl->reader->last_g = 0; // set last receive to zero
cl->last = 0; // set last client action to zero
return 0;
}
cl->reader->tcp_connected = 1;
cl->reader->card_status = CARD_INSERTED;
cl->reader->last_s = time(NULL); // reset last send
cl->reader->last_g = time(NULL); // reset last receive
cl->last = time(NULL); // reset last client action
cl->pfd = cl->udp_fd = handle;
}
if(!cl->udp_fd) // Check if client has no handle -> error
{
return 0;
}
// check if client reached timeout
if(cl->reader->tcp_rto && (cl->reader->last_s - cl->reader->last_g > cl->reader->tcp_rto))
{
if(!cl->is_udp) // tcp on timeout disconnect reader
{
network_tcp_connection_close(cl->reader, "rto");
return 0;
}
else //udp check to discover ip change on dynamic ip servers
{
IN_ADDR_T last_ip;
IP_ASSIGN(last_ip, cl->ip);
if(!hostResolve(cl->reader))
{
network_tcp_connection_close(cl->reader, "no ip");
return 0;
}
if(!IP_EQUAL(last_ip, cl->ip))
{
network_tcp_connection_close(cl->reader, "ip change");
return 0;
}
}
}
return 1; // all ok
}
/*
* client functions
*/
static void camd35_send_keepalive(struct s_client *cl)
{
if(cl->reader)
{
if(camd35_tcp_connect(cl))
{
if(cacheex_get_rdr_mode(cl->reader) > 1)
{
camd35_cacheex_push_request_remote_id(cl);
return;
}
uint8_t rbuf[32]; // minimal size
memset(rbuf, 0, sizeof(rbuf));
rbuf[0] = 55;
rbuf[1] = 1;
rbuf[2] = 0;
camd35_send(cl, rbuf, 1); // send adds +20
}
}
}
static void camd35_send_keepalive_answer(struct s_client *cl)
{
if(check_client(cl) && cl->account)
{
uint8_t rbuf[32]; // minimal size
memset(rbuf, 0, sizeof(rbuf));
rbuf[0] = 55;
rbuf[1] = 1;
rbuf[2] = 0;
camd35_send(cl, rbuf, 1); // send adds +20
}
}
static int32_t camd35_client_init(struct s_client *cl)
{
uint8_t md5tmp[MD5_DIGEST_LENGTH];
int32_t no_delay = 1;
cs_strncpy((char *)cl->upwd, cl->reader->r_pwd, sizeof(cl->upwd));
i2b_buf(4, crc32(0L, MD5((uint8_t *)cl->reader->r_usr, cs_strlen(cl->reader->r_usr), md5tmp), 16), cl->ucrc);
if(!aes_set_key_alloc(&cl->aes_keys, (char *)MD5(cl->upwd, cs_strlen((char *)cl->upwd), md5tmp)))
{
return 1;
}
cl->crypted = 1;
rdr_log(cl->reader, "proxy %s:%d", cl->reader->device, cl->reader->r_port);
if(!cl->is_udp && cacheex_get_rdr_mode(cl->reader) < 2)
{
setsockopt(cl->udp_fd, IPPROTO_TCP, TCP_NODELAY, (void *)&no_delay, sizeof(no_delay));
}
if(cl->reader->keepalive)
{
camd35_send_keepalive(cl);
}
if(cacheex_get_rdr_mode(cl->reader) == 2
#ifdef CS_CACHEEX_AIO
|| cacheex_get_rdr_mode(cl->reader) == 1
#endif
)
{
camd35_cacheex_send_push_filter(cl, 2);
#ifdef CS_CACHEEX_AIO
camd35_cacheex_feature_request(cl);
#endif
}
#ifdef CS_CACHEEX_AIO
if(!cl->c35_extmode)
{
camd35_send_extmode(cl, false);
cl->c35_extmode = 1;
}
#endif
return 0;
}
static void camd35_idle(void)
{
struct s_client *cl = cur_client();
if(!cl->reader)
{
return;
}
if(cl->reader->keepalive)
{
camd35_send_keepalive(cl);
}
else if(cl->reader->tcp_ito > 0) // only check if user added an inactivity timeout
{
// inactivity timeout check
time_t now;
int32_t time_diff;
time(&now);
time_diff = llabs(now - cl->reader->last_s);
if(time_diff > cl->reader->tcp_ito)
{
if(check_client(cl) && cl->reader->tcp_connected && cl->reader->ph.type == MOD_CONN_TCP)
{
rdr_log_dbg(cl->reader, D_READER, "inactive_timeout, close connection (fd=%d)", cl->pfd);
network_tcp_connection_close(cl->reader, "inactivity");
}
else
{
cl->reader->last_s = now;
}
}
}
}
static void *camd35_server(struct s_client *client, uint8_t *mbuf, int32_t n)
{
if(!client || !mbuf)
{
return NULL;
}
if(client->reader)
{
client->reader->last_g = time(NULL); // last receive is now
if(mbuf[0] == 6 || mbuf[0] == 19) // check for emm command
{
// fixup: last send is now (if client is only
// sending emms, connection would be dropped!)
client->reader->last_s = time(NULL);
}
rdr_log(client->reader, "SERVER last = %d, last_s = %d, last_g = %d",
(int) client->last, (int) client->reader->last_s, (int) client->reader->last_g);
}
client->last = time(NULL); // last client action is now
switch(mbuf[0])
{
case 0: // ECM
case 3: // ECM (cascading)
camd35_process_ecm(mbuf, n);
break;
case 6: // EMM
case 19: // EMM
if(n > 2)
{
camd35_process_emm(mbuf, n, mbuf[1]);
}
break;
case 55:
camd35_send_keepalive_answer(client); // keepalive msg
break;
#ifdef CS_CACHEEX_AIO
case 0x43:
break;
case 0x50:
client->c35_extmode = 2;
break;
#endif
default:
if(!camd35_cacheex_server(client, mbuf))
{
cs_log("unknown [cs357x/cs378x] command from %s! (%d) n=%d", username(client), mbuf[0], n);
}