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module-cccam.c
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module-cccam.c
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#define MODULE_LOG_PREFIX "cccam"
#include "globals.h"
#ifdef MODULE_CCCAM
#include "cscrypt/md5.h"
#include "cscrypt/sha1.h"
#include "module-cacheex.h"
#include "module-cccam.h"
#include "module-cccam-data.h"
#include "module-cccam-cacheex.h"
#include "module-cccshare.h"
#include "oscam-chk.h"
#include "oscam-cache.h"
#include "oscam-client.h"
#include "oscam-ecm.h"
#include "oscam-emm.h"
#include "oscam-failban.h"
#include "oscam-garbage.h"
#include "oscam-lock.h"
#include "oscam-net.h"
#include "oscam-reader.h"
#include "oscam-string.h"
#include "oscam-time.h"
#include "oscam-work.h"
//Mode names for CMD_05 command:
static const char *cmd05_mode_name[] = { "UNKNOWN", "PLAIN", "AES", "CC_CRYPT", "RC4",
"LEN=0"
};
//Mode names for CMD_0C command:
static const char *cmd0c_mode_name[] = { "NONE", "RC6", "RC4", "CC_CRYPT", "AES", "IDEA" };
uint8_t cc_node_id[8];
int32_t cc_cli_connect(struct s_client *cl);
int32_t cc_send_pending_emms(struct s_client *cl);
#define getprefix() (!cl?"":(!cl->cc?"":(((struct cc_data *)(cl->cc))->prefix)))
void cc_init_crypt(struct cc_crypt_block *block, uint8_t *key, int32_t len)
{
int32_t i = 0;
uint8_t j = 0;
for(i = 0; i < 256; i++)
{
block->keytable[i] = i;
}
for(i = 0; i < 256; i++)
{
j += key[i % len] + block->keytable[i];
SWAPC(&block->keytable[i], &block->keytable[j]);
}
block->state = *key;
block->counter = 0;
block->sum = 0;
}
void cc_crypt(struct cc_crypt_block *block, uint8_t *data, int32_t len,
cc_crypt_mode_t mode)
{
int32_t i;
uint8_t z;
for(i = 0; i < len; i++)
{
block->counter++;
block->sum += block->keytable[block->counter];
SWAPC(&block->keytable[block->counter], &block->keytable[block->sum]);
z = data[i];
data[i] = z ^ block->keytable[(block->keytable[block->counter]
+ block->keytable[block->sum]) & 0xff];
data[i] ^= block->state;
if(!mode)
{ z = data[i]; }
block->state = block->state ^ z;
}
}
void cc_rc4_crypt(struct cc_crypt_block *block, uint8_t *data, int32_t len,
cc_crypt_mode_t mode)
{
int32_t i;
uint8_t z;
for(i = 0; i < len; i++)
{
block->counter++;
block->sum += block->keytable[block->counter];
SWAPC(&block->keytable[block->counter], &block->keytable[block->sum]);
z = data[i];
data[i] = z ^ block->keytable[(block->keytable[block->counter]
+ block->keytable[block->sum]) & 0xff];
if(!mode)
{ z = data[i]; }
block->state = block->state ^ z;
}
}
void cc_xor(uint8_t *buf)
{
const char cccam[] = "CCcam";
uint8_t i;
for(i = 0; i < 8; i++)
{
buf[8 + i] = i * buf[i];
if(i <= 5)
{
buf[i] ^= cccam[i];
}
}
}
void cc_cw_crypt(struct s_client *cl, uint8_t *cws, uint32_t cardid)
{
struct cc_data *cc = cl->cc;
int64_t node_id;
uint8_t tmp;
int32_t i;
if(cl->typ != 'c')
{
node_id = b2ll(8, cc->node_id);
}
else
{
node_id = b2ll(8, cc->peer_node_id);
}
for(i = 0; i < 16; i++)
{
tmp = cws[i] ^(node_id >> (4 * i));
if(i & 1)
{ tmp = ~tmp; }
cws[i] = (cardid >> (2 * i)) ^ tmp;
}
}
/** swap endianness (int) */
static void SwapLBi(unsigned char *buff, int32_t len)
{
#if __BYTE_ORDER != __BIG_ENDIAN
return;
#endif
int32_t i;
unsigned char swap[4];
for(i = 0; i < len / 4; i++)
{
memcpy(swap, buff, 4);
buff[0] = swap[3];
buff[1] = swap[2];
buff[2] = swap[1];
buff[3] = swap[0];
buff += 4;
}
}
void cc_crypt_cmd0c(struct s_client *cl, uint8_t *buf, int32_t len)
{
struct cc_data *cc = cl->cc;
uint8_t *out;
if(!cs_malloc(&out, len))
{ return; }
switch(cc->cmd0c_mode)
{
case MODE_CMD_0x0C_NONE: // none additional encryption
{
memcpy(out, buf, len);
break;
}
case MODE_CMD_0x0C_RC6 : //RC6
{
// buf may be unaligned,
// so we use malloc() memory for the uint32_t* cast
uint8_t *tmp;
int32_t i;
if(!cs_malloc(&tmp, len))
{ return; }
memcpy(tmp, buf, len);
SwapLBi(tmp, len);
for(i = 0; i < len / 16; i++)
{ rc6_block_decrypt((uint32_t *)(tmp + i * 16), (uint32_t *)(out + i * 16), 1, cc->cmd0c_RC6_cryptkey); }
SwapLBi(out, len);
NULLFREE(tmp);
break;
}
case MODE_CMD_0x0C_RC4: // RC4
{
cc_rc4_crypt(&cc->cmd0c_cryptkey, buf, len, ENCRYPT);
memcpy(out, buf, len);
break;
}
case MODE_CMD_0x0C_CC_CRYPT: // cc_crypt
{
cc_crypt(&cc->cmd0c_cryptkey, buf, len, DECRYPT);
memcpy(out, buf, len);
break;
}
case MODE_CMD_0x0C_AES: // AES
{
int32_t i;
for(i = 0; i < len / 16; i++)
AES_decrypt((unsigned char *) buf + i * 16,
(unsigned char *) out + i * 16, &cc->cmd0c_AES_key);
break;
}
case MODE_CMD_0x0C_IDEA : //IDEA
{
int32_t i = 0;
int32_t j;
while(i < len)
{
idea_ecb_encrypt(buf + i, out + i, &cc->cmd0c_IDEA_dkey);
i += 8;
}
i = 8;
while(i < len)
{
for(j = 0; j < 8; j++)
{ out[j + i] ^= buf[j + i - 8]; }
i += 8;
}
break;
}
}
memcpy(buf, out, len);
NULLFREE(out);
}
void set_cmd0c_cryptkey(struct s_client *cl, uint8_t *key, uint8_t len)
{
struct cc_data *cc = cl->cc;
uint8_t key_buf[32];
memset(&key_buf, 0, sizeof(key_buf));
if(len > 32)
{ len = 32; }
memcpy(key_buf, key, len);
switch(cc->cmd0c_mode)
{
case MODE_CMD_0x0C_NONE : //NONE
{
break;
}
case MODE_CMD_0x0C_RC6 : //RC6
{
rc6_key_setup(key_buf, 32, cc->cmd0c_RC6_cryptkey);
break;
}
case MODE_CMD_0x0C_RC4: //RC4
case MODE_CMD_0x0C_CC_CRYPT: //CC_CRYPT
{
cc_init_crypt(&cc->cmd0c_cryptkey, key_buf, 32);
break;
}
case MODE_CMD_0x0C_AES: //AES
{
memset(&cc->cmd0c_AES_key, 0, sizeof(cc->cmd0c_AES_key));
AES_set_decrypt_key((unsigned char *) key_buf, 256, &cc->cmd0c_AES_key);
break;
}
case MODE_CMD_0x0C_IDEA : //IDEA
{
uint8_t key_buf_idea[16];
memcpy(key_buf_idea, key_buf, 16);
IDEA_KEY_SCHEDULE ekey;
idea_set_encrypt_key(key_buf_idea, &ekey);
idea_set_decrypt_key(&ekey, &cc->cmd0c_IDEA_dkey);
break;
}
}
}
int32_t sid_eq(struct cc_srvid *srvid1, struct cc_srvid *srvid2)
{
return (srvid1->sid == srvid2->sid && (srvid1->chid == srvid2->chid || !srvid1->chid || !srvid2->chid) && (srvid1->ecmlen == srvid2->ecmlen || !srvid1->ecmlen || !srvid2->ecmlen));
}
int32_t sid_eq_nb(struct cc_srvid *srvid1, struct cc_srvid_block *srvid2)
{
return sid_eq(srvid1, (struct cc_srvid *)srvid2);
}
int32_t sid_eq_bb(struct cc_srvid_block *srvid1, struct cc_srvid_block *srvid2)
{
return (srvid1->sid == srvid2->sid && (srvid1->chid == srvid2->chid || !srvid1->chid || !srvid2->chid) && (srvid1->ecmlen == srvid2->ecmlen || !srvid1->ecmlen || !srvid2->ecmlen)
&& (srvid1->blocked_till == srvid2->blocked_till || !srvid1->blocked_till || !srvid2->blocked_till));
}
struct cc_srvid_block *is_sid_blocked(struct cc_card *card, struct cc_srvid *srvid_blocked)
{
LL_ITER it = ll_iter_create(card->badsids);
struct cc_srvid_block *srvid;
while((srvid = ll_iter_next(&it)))
{
if(sid_eq_nb(srvid_blocked, srvid))
{
break;
}
}
return srvid;
}
uint32_t has_perm_blocked_sid(struct cc_card *card)
{
LL_ITER it = ll_iter_create(card->badsids);
struct cc_srvid_block *srvid;
while((srvid = ll_iter_next(&it)))
{
if(srvid->blocked_till == 0)
{
break;
}
}
return srvid != NULL;
}
struct cc_srvid *is_good_sid(struct cc_card *card, struct cc_srvid *srvid_good)
{
LL_ITER it = ll_iter_create(card->goodsids);
struct cc_srvid *srvid;
while((srvid = ll_iter_next(&it)))
{
if(sid_eq(srvid, srvid_good))
{
break;
}
}
return srvid;
}
#define BLOCKING_SECONDS 10
void add_sid_block(struct cc_card *card, struct cc_srvid *srvid_blocked, bool temporary)
{
if(is_sid_blocked(card, srvid_blocked))
{ return; }
struct cc_srvid_block *srvid;
if(!cs_malloc(&srvid, sizeof(struct cc_srvid_block)))
{ return; }
memcpy(srvid, srvid_blocked, sizeof(struct cc_srvid));
if(temporary)
{ srvid->blocked_till = time(NULL) + BLOCKING_SECONDS; }
ll_append(card->badsids, srvid);
cs_log_dbg(D_READER, "added sid block %04X(CHID %04X, length %d) for card %08x",
srvid_blocked->sid, srvid_blocked->chid, srvid_blocked->ecmlen, card->id);
}
void remove_sid_block(struct cc_card *card, struct cc_srvid *srvid_blocked)
{
LL_ITER it = ll_iter_create(card->badsids);
struct cc_srvid_block *srvid;
while((srvid = ll_iter_next(&it)))
if(sid_eq_nb(srvid_blocked, srvid))
{ ll_iter_remove_data(&it); }
cs_log_dbg(D_READER, "removed sid block %04X(CHID %04X, length %d) for card %08x",
srvid_blocked->sid, srvid_blocked->chid, srvid_blocked->ecmlen, card->id);
}
void add_good_sid(struct cc_card *card, struct cc_srvid *srvid_good)
{
if(is_good_sid(card, srvid_good))
{ return; }
remove_sid_block(card, srvid_good);
struct cc_srvid *srvid;
if(!cs_malloc(&srvid, sizeof(struct cc_srvid)))
{ return; }
memcpy(srvid, srvid_good, sizeof(struct cc_srvid));
ll_append(card->goodsids, srvid);
cs_log_dbg(D_READER, "added good sid %04X(%d) for card %08x", srvid_good->sid, srvid_good->ecmlen, card->id);
}
void remove_good_sid(struct cc_card *card, struct cc_srvid *srvid_good)
{
LL_ITER it = ll_iter_create(card->goodsids);
struct cc_srvid *srvid;
while((srvid = ll_iter_next(&it)))
if(sid_eq(srvid, srvid_good))
{ ll_iter_remove_data(&it); }
cs_log_dbg(D_READER, "removed good sid %04X(%d) for card %08x", srvid_good->sid, srvid_good->ecmlen, card->id);
}
/**
* reader
* clears and frees values for reinit
*/
void cc_cli_close(struct s_client *cl, int32_t call_conclose)
{
struct s_reader *rdr = cl->reader;
struct cc_data *cc = cl->cc;
if(!rdr || !cc)
{ return; }
if(rdr) { rdr->tcp_connected = 0; }
if(rdr) { rdr->card_status = NO_CARD; }
if(rdr) { rdr->last_s = rdr->last_g = 0; }
if(cl) { cl->last = 0; }
if(call_conclose) //clears also pending ecms!
{ network_tcp_connection_close(rdr, "close"); }
else
{
if(cl->udp_fd)
{
close(cl->udp_fd);
cl->udp_fd = 0;
cl->pfd = 0;
}
}
cc->ecm_busy = 0;
cc->just_logged_in = 0;
}
struct cc_extended_ecm_idx *add_extended_ecm_idx(struct s_client *cl,
uint8_t send_idx, uint16_t ecm_idx, struct cc_card *card,
struct cc_srvid srvid, int8_t free_card)
{
struct cc_data *cc = cl->cc;
struct cc_extended_ecm_idx *eei;
if(!cs_malloc(&eei, sizeof(struct cc_extended_ecm_idx)))
{ return NULL; }
eei->send_idx = send_idx;
eei->ecm_idx = ecm_idx;
eei->card = card;
eei->cccam_id = card->id;
eei->srvid = srvid;
eei->free_card = free_card;
cs_ftime(&eei->tps);
ll_append(cc->extended_ecm_idx, eei);
//cs_log_dbg(D_TRACE, "%s add extended ecm-idx: %d:%d", getprefix(), send_idx, ecm_idx);
return eei;
}
struct cc_extended_ecm_idx *get_extended_ecm_idx(struct s_client *cl,
uint8_t send_idx, int32_t remove_item)
{
struct cc_data *cc = cl->cc;
struct cc_extended_ecm_idx *eei;
LL_ITER it = ll_iter_create(cc->extended_ecm_idx);
while((eei = ll_iter_next(&it)))
{
if(eei->send_idx == send_idx)
{
if(remove_item)
{ ll_iter_remove(&it); }
//cs_log_dbg(D_TRACE, "%s get by send-idx: %d FOUND: %d",
// getprefix(), send_idx, eei->ecm_idx);
return eei;
}
}
#ifdef WITH_DEBUG
if(remove_item)
cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s get by send-idx: %d NOT FOUND", getprefix(),
send_idx);
#endif
return NULL;
}
struct cc_extended_ecm_idx *get_extended_ecm_idx_by_idx(struct s_client *cl,
uint16_t ecm_idx, int32_t remove_item)
{
struct cc_data *cc = cl->cc;
struct cc_extended_ecm_idx *eei;
LL_ITER it = ll_iter_create(cc->extended_ecm_idx);
while((eei = ll_iter_next(&it)))
{
if(eei->ecm_idx == ecm_idx)
{
if(remove_item)
{ ll_iter_remove(&it); }
//cs_log_dbg(D_TRACE, "%s get by ecm-idx: %d FOUND: %d",
// getprefix(), ecm_idx, eei->send_idx);
return eei;
}
}
#ifdef WITH_DEBUG
if(remove_item)
cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s get by ecm-idx: %d NOT FOUND", getprefix(),
ecm_idx);
#endif
return NULL;
}
void cc_reset_pending(struct s_client *cl, int32_t ecm_idx)
{
int32_t i = 0;
for(i = 0; i < cfg.max_pending; i++)
{
if(cl->ecmtask[i].idx == ecm_idx && cl->ecmtask[i].rc == E_ALREADY_SENT)
{ cl->ecmtask[i].rc = E_UNHANDLED; } //Mark unused
}
}
void free_extended_ecm_idx_by_card(struct s_client *cl, struct cc_card *card, int8_t null_only)
{
struct cc_data *cc = cl->cc;
struct cc_extended_ecm_idx *eei;
LL_ITER it = ll_iter_create(cc->extended_ecm_idx);
while((eei = ll_iter_next(&it)))
{
if(eei->card == card)
{
if(null_only)
{
cc_reset_pending(cl, eei->ecm_idx);
if(eei->free_card)
{ NULLFREE(eei->card); }
ll_iter_remove_data(&it);
}
else
{
if(eei->free_card)
{ NULLFREE(eei->card); }
eei->card = NULL;
}
}
}
}
void free_extended_ecm_idx(struct cc_data *cc)
{
struct cc_extended_ecm_idx *eei;
LL_ITER it = ll_iter_create(cc->extended_ecm_idx);
while((eei = ll_iter_next(&it)))
{
if(eei->free_card)
{ NULLFREE(eei->card); }
ll_iter_remove_data(&it);
}
}
int32_t cc_recv_to(struct s_client *cl, uint8_t *buf, int32_t len)
{
int32_t rc;
struct pollfd pfd;
while(1)
{
pfd.fd = cl->udp_fd;
pfd.events = POLLIN | POLLPRI;
rc = poll(&pfd, 1, cfg.cc_recv_timeout);
if(rc < 0)
{
if(errno == EINTR) { continue; }
return (-1); //error!!
}
if(rc == 1)
{
if(pfd.revents & POLLHUP)
{ return (-1); } //hangup = error!!
else
{ break; }
}
else
{ return (-2); } //timeout!!
}
return cs_recv(cl->udp_fd, buf, len, MSG_WAITALL);
}
/**
* reader
* closes the connection and reopens it.
*/
static int8_t cc_cycle_connection(struct s_client *cl)
{
if(!cl || cl->kill)
{ return 0; }
cs_log_dbg(D_TRACE, "%s unlocked-cycleconnection! timeout %d ms",
getprefix(), cl->reader->cc_reconnect);
cc_cli_close(cl, 0);
cs_sleepms(50);
cc_cli_connect(cl);
return cl->reader->tcp_connected;
}
/**
* reader+server:
* receive a message
*/
int32_t cc_msg_recv(struct s_client *cl, uint8_t *buf, int32_t maxlen)
{
struct s_reader *rdr = (cl->typ == 'c') ? NULL : cl->reader;
int32_t len;
struct cc_data *cc = cl->cc;
int32_t handle = cl->udp_fd;
if(handle <= 0 || maxlen < 4)
{ return -1; }
if(!cl->cc) { return -1; }
cs_writelock(__func__, &cc->lockcmd);
if(!cl->cc)
{
cs_writeunlock(__func__, &cc->lockcmd);
return -1;
}
len = cs_recv(handle, buf, 4, MSG_WAITALL);
if(len != 4) // invalid header length read
{
if(len <= 0)
{ cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s disconnected by remote server", getprefix()); }
else
{ cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s invalid header length (expected 4, read %d)", getprefix(), len); }
cs_writeunlock(__func__, &cc->lockcmd);
return -1;
}
cc_crypt(&cc->block[DECRYPT], buf, 4, DECRYPT);
//cs_log_dump_dbg(D_CLIENT, buf, 4, "cccam: decrypted header:");
cc->g_flag = buf[0];
int32_t size = (buf[2] << 8) | buf[3];
if(size) // check if any data is expected in msg
{
if(size > maxlen)
{
cs_writeunlock(__func__, &cc->lockcmd);
cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s message too big (size=%d max=%d)", getprefix(), size, maxlen);
return 0;
}
len = cs_recv(handle, buf + 4, size, MSG_WAITALL);
if(rdr && buf[1] == MSG_CW_ECM)
{ rdr->last_g = time(NULL); }
if(len != size)
{
cs_writeunlock(__func__, &cc->lockcmd);
if(len <= 0)
{ cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s disconnected by remote", getprefix()); }
else
cs_log_dbg(cl->typ == 'c' ? D_CLIENT : D_READER, "%s invalid message length read (expected %d, read %d)",
getprefix(), size, len);
return -1;
}
cc_crypt(&cc->block[DECRYPT], buf + 4, len, DECRYPT);
len += 4;
}
cs_writeunlock(__func__, &cc->lockcmd);
//cs_log_dump_dbg(cl->typ=='c'?D_CLIENT:D_READER, buf, len, "cccam: full decrypted msg, len=%d:", len);
return len;
}
/**
* reader+server
* send a message
*/
int32_t cc_cmd_send(struct s_client *cl, uint8_t *buf, int32_t len, cc_msg_type_t cmd)
{
if(!cl->udp_fd) //disconnected
{ return -1; }
struct s_reader *rdr = (cl->typ == 'c') ? NULL : cl->reader;
int32_t n;
struct cc_data *cc = cl->cc;
if(!cl->cc || cl->kill) { return -1; }
cs_writelock(__func__, &cc->lockcmd);
if(!cl->cc || cl->kill)
{
cs_writeunlock(__func__, &cc->lockcmd);
return -1;
}
uint8_t *netbuf;
if(!cs_malloc(&netbuf, len + 4))
{ return -1; }
if(cmd == MSG_NO_HEADER)
{
memcpy(netbuf, buf, len);
}
else
{
// build command message
netbuf[0] = cc->g_flag; // flags??
netbuf[1] = cmd & 0xff;
netbuf[2] = len >> 8;
netbuf[3] = len & 0xff;
if(buf)
{ memcpy(netbuf + 4, buf, len); }
len += 4;
}
cs_log_dump_dbg(D_CLIENT, netbuf, len, "cccam: send:");
cc_crypt(&cc->block[ENCRYPT], netbuf, len, ENCRYPT);
n = send(cl->udp_fd, netbuf, len, 0);
cs_writeunlock(__func__, &cc->lockcmd);
NULLFREE(netbuf);
if(n != len)
{
if(rdr)
{ cc_cli_close(cl, 1); }
else
{
cs_writeunlock(__func__, &cc->cards_busy);
cs_disconnect_client(cl);
}
n = -1;
}
return n;
}
#define CC_DEFAULT_VERSION 1
#define CC_VERSIONS 8
static char *version[CC_VERSIONS] = { "2.0.11", "2.1.1", "2.1.2", "2.1.3", "2.1.4", "2.2.0", "2.2.1", "2.3.0"};
static char *build[CC_VERSIONS] = { "2892", "2971", "3094", "3165", "3191", "3290", "3316", "3367"};
static char extcompat[CC_VERSIONS] = { 0, 0, 0, 0, 0, 1, 1, 1}; //Supporting new card format starting with 2.2.0
/**
* reader+server
* checks the cccam-version in the configuration
*/
void cc_check_version(char *cc_version, char *cc_build)
{
int32_t i;
for(i = 0; i < CC_VERSIONS; i++)
{
if(!memcmp(cc_version, version[i], strlen(version[i])))
{
memcpy(cc_build, build[i], strlen(build[i]) + 1);
cs_log_dbg(D_CLIENT, "cccam: auto build set for version: %s build: %s",
cc_version, cc_build);
return;
}
}
memcpy(cc_version, version[CC_DEFAULT_VERSION], strlen(
version[CC_DEFAULT_VERSION]));
memcpy(cc_build, build[CC_DEFAULT_VERSION], strlen(
build[CC_DEFAULT_VERSION]));
cs_log_dbg(D_CLIENT, "cccam: auto version set: %s build: %s", cc_version, cc_build);
return;
}
int32_t check_cccam_compat(struct cc_data *cc)
{
int32_t res = 0;
int32_t i = 0;
for(i = 0; i < CC_VERSIONS; i++)
{
if(!strcmp(cfg.cc_version, version[i]))
{
res += extcompat[i];
break;
}
}
if(!res)
{ return 0; }
for(i = 0; i < CC_VERSIONS; i++)
{
if(!strcmp(cc->remote_version, version[i]))
{
res += extcompat[i];
break;
}
}
return res == 2;
}
/**
* reader
* sends own version information to the CCCam server
*/
int32_t cc_send_cli_data(struct s_client *cl)
{
struct s_reader *rdr = cl->reader;
struct cc_data *cc = cl->cc;
const int32_t size = 20 + 8 + 6 + 26 + 4 + 28 + 1;
uint8_t buf[size];
cs_log_dbg(D_READER, "cccam: send client data");
memcpy(cc->node_id, cc_node_id, sizeof(cc_node_id));
memcpy(buf, rdr->r_usr, sizeof(rdr->r_usr));
memcpy(buf + 20, cc->node_id, 8);
buf[28] = rdr->cc_want_emu; // <-- Client want to have EMUs, 0 - NO; 1 - YES
memcpy(buf + 29, rdr->cc_version, sizeof(rdr->cc_version)); // cccam version (ascii)
memcpy(buf + 61, rdr->cc_build, sizeof(rdr->cc_build)); // build number (ascii)
cs_log_dbg(D_READER, "%s sending own version: %s, build: %s", getprefix(),
rdr->cc_version, rdr->cc_build);
return cc_cmd_send(cl, buf, size, MSG_CLI_DATA);
}
/**
* server
* sends version information to the client
*/
int32_t cc_send_srv_data(struct s_client *cl)
{
struct cc_data *cc = cl->cc;
cs_log_dbg(D_CLIENT, "cccam: send server data");
memcpy(cc->node_id, cc_node_id, sizeof(cc_node_id));
uint8_t buf[0x48];
memset(buf, 0, 0x48);
int32_t stealth = cl->account->cccstealth;
if(stealth == -1)
{ stealth = cfg.cc_stealth; }
if(stealth) { cc->node_id[7]++; }
memcpy(buf, cc->node_id, 8);
char cc_build[7], tmp_dbg[17];
memset(cc_build, 0, sizeof(cc_build));
cc_check_version((char *) cfg.cc_version, cc_build);
memcpy(buf + 8, cfg.cc_version, sizeof(cfg.cc_version)); // cccam version (ascii)
memcpy(buf + 40, cc_build, sizeof(cc_build)); // build number (ascii)
cs_log_dbg(D_CLIENT, "%s version: %s, build: %s nodeid: %s", getprefix(),
cfg.cc_version, cc_build, cs_hexdump(0, cc->peer_node_id, 8, tmp_dbg, sizeof(tmp_dbg)));
return cc_cmd_send(cl, buf, 0x48, MSG_SRV_DATA);
}
int32_t loop_check(uint8_t *myid, struct s_client *cl)
{
if(!cl)
{ return 0; }
struct cc_data *cc = cl->cc;
if(!cc)
{ return 0; }
return !memcmp(myid, cc->peer_node_id, sizeof(cc->peer_node_id)); // same nodeid? ignore
}
/**
* reader
* retrieves the next waiting ecm request
*/
int32_t cc_get_nxt_ecm(struct s_client *cl)
{
struct cc_data *cc = cl->cc;
ECM_REQUEST *er, *ern = NULL;
int32_t n, i, pending = 0;
struct timeb t;
cs_ftime(&t);
int32_t diff = (int32_t)cfg.ctimeout + 500;
n = -1;
for(i = 0; i < cfg.max_pending; i++)
{
er = &cl->ecmtask[i];
if((comp_timeb(&t, &er->tps) >= diff) && (er->rc >= E_NOCARD)) // drop timeouts
{
write_ecm_answer(cl->reader, er, E_TIMEOUT, 0, NULL, NULL, 0, NULL);
}
else if(er->rc >= E_NOCARD && er->rc <= E_UNHANDLED) // stil active and waiting
{
pending++;
if(loop_check(cc->peer_node_id, er->client))
{
cs_log_dbg(D_READER, "%s ecm loop detected! client %s (%8lX)",
getprefix(), er->client->account->usr, (unsigned long)er->client->thread);
write_ecm_answer(cl->reader, er, E_NOTFOUND, E2_CCCAM_LOOP, NULL, NULL, 0, NULL);
}
else
// search for the ecm with the lowest time, this should be the next to go
if(n < 0 || (ern->tps.time - er->tps.time < 0))
{
//check for already pending:
if(cc && cc->extended_mode)
{
int32_t j, found;
ECM_REQUEST *erx;
for(found = j = 0; j < cfg.max_pending; j++)
{
erx = &cl->ecmtask[j];
if(i != j && erx->rc == E_ALREADY_SENT &&
er->caid == erx->caid &&
er->ecmd5 == erx->ecmd5)
{
found = 1;
break;
}
}
if(!found)
{
n = i;
ern = er;
}
}
else
{
n = i;
ern = er;
}
}
}
}
cl->pending = pending;
return n;
}
/**
* sends the secret cmd05 answer to the server
*/
int32_t send_cmd05_answer(struct s_client *cl)
{
struct cc_data *cc = cl->cc;
if(!cc->cmd05_active || cc->ecm_busy) //exit if not in cmd05 or waiting for ECM answer
{ return 0; }
cc->cmd05_active--;
if(cc->cmd05_active)
{ return 0; }
uint8_t *data = cc->cmd05_data;
cc_cmd05_mode cmd05_mode = MODE_UNKNOWN;
// by Project:Keynation
switch(cc->cmd05_data_len)
{
case 0: //payload 0, return with payload 0!
{
cc_cmd_send(cl, NULL, 0, MSG_CMD_05);
cmd05_mode = MODE_LEN0;
break;
}
case 256:
{
cmd05_mode = cc->cmd05_mode;
switch(cmd05_mode)
{
case MODE_PLAIN: //Send plain unencrypted back
{
cc_cmd_send(cl, data, 256, MSG_CMD_05);
break;
}
case MODE_AES: //encrypt with received aes128 key:
{
AES_KEY key;
uint8_t aeskey[16];
uint8_t out[256];