#include "globals.h"

#ifdef MODULE_RADEGAST

#include "oscam-client.h"

#include "oscam-ecm.h"

#include "oscam-net.h"

#include "oscam-string.h"

#include "oscam-reader.h"

static int32_t radegast_send(struct s_client * client, uchar *buf)

{

int32_t l=buf[1]+2;

return(send(client->pfd, buf, l, 0));

}

static int32_t radegast_recv(struct s_client *client, uchar *buf, int32_t l)

{

int32_t n;

if (!client->pfd) return(-1);

if (client->typ == 'c') { // server code

if ((n=recv(client->pfd, buf, l, 0))>0)

client->last=time((time_t *) 0);

} else { // client code

if ((n=recv(client->pfd, buf, l, 0))>0) {

cs_ddump_mask(D_CLIENT, buf, n, "radegast: received %d bytes from %s", n, remote_txt());

client->last = time((time_t *) 0);

if (buf[0] == 2) { // dcw received

if (buf[3] != 0x10) { // dcw ok

cs_log("radegast: no dcw");

n = -1;

}

}

}

}

return(n);

}

static int32_t radegast_recv_chk(struct s_client *client, uchar *dcw, int32_t *rc, uchar *buf, int32_t UNUSED(n))

{

if ((buf[0] == 2) && (buf[1] == 0x12)) {

char tmp_dbg[33];

memcpy(dcw, buf+4, 16);

cs_debug_mask(D_CLIENT, "radegast: recv chk - %s", cs_hexdump(0, dcw, 16, tmp_dbg, sizeof(tmp_dbg)));

*rc = 1;

return(client->reader->msg_idx);

}

return (-1);

}

static void radegast_auth_client(IN_ADDR_T ip)

{

int32_t ok;

struct s_auth *account;

struct s_client *cl = cur_client();

ok = check_ip(cfg.rad_allowed, ip);

if (!ok)

{

cs_log ("radegast: IP not allowed");

cs_auth_client(cl, (struct s_auth *)0, NULL);

cs_disconnect_client(cl);

}

for (ok = 0, account = cfg.account; cfg.rad_usr && account && !ok; account = account->next)

{

ok = streq(cfg.rad_usr, account->usr);

if (ok && cs_auth_client(cl, account, NULL))

cs_disconnect_client(cl);

}

if (!ok)

cs_auth_client(cl, ok ? account : (struct s_auth *)(-1), "radegast");

}

static void radegast_send_dcw(struct s_client *client, ECM_REQUEST *er)

{

uchar mbuf[1024];

mbuf[0]=0x02; // DCW

if (er->rc < E_NOTFOUND)

{

mbuf[1]=0x12; // len (overall)

mbuf[2]=0x05; // ACCESS

mbuf[3]=0x10; // len

memcpy(mbuf+4, er->cw, 16);

}

else

{

mbuf[1]=0x02; // len (overall)

mbuf[2]=0x04; // NO ACCESS

mbuf[3]=0x00; // len

}

radegast_send(client, mbuf);

}

static void radegast_process_ecm(uchar *buf, int32_t l)

{

int32_t i, n, sl;

ECM_REQUEST *er;

struct s_client *cl = cur_client();

if (!(er=get_ecmtask()))

return;

for (i=0; i<l; i+=(sl+2))

{

sl=buf[i+1];

switch(buf[i])

{

case 2: // CAID (upper byte only, oldstyle)

er->caid=buf[i+2]<<8;

break;

case 10: // CAID

er->caid=b2i(2, buf+i+2);

break;

case 3: // ECM DATA

er->ecmlen = sl;

memcpy(er->ecm, buf+i+2, er->ecmlen);

break;

case 6: // PROVID (ASCII)

n=(sl>6) ? 3 : (sl>>1);

er->prid=cs_atoi((char *) buf+i+2+sl-(n<<1), n, 0);

break;

case 7: // KEYNR (ASCII), not needed

break;

case 8: // ECM PROCESS PID ?? don't know, not needed

break;

}

}

if (l!=i)

cs_log("WARNING: ECM-request corrupt");

else

get_cw(cl, er);

}

static void radegast_process_unknown(uchar *buf)

{

uchar answer[2]={0x81, 0x00};

radegast_send(cur_client(), answer);

cs_log("unknown request %02X, len=%d", buf[0], buf[1]);

}

static void * radegast_server(struct s_client * client, uchar *mbuf, int32_t n)

{

if (n<3)

return NULL;

if (!client->init_done) {

radegast_auth_client(cur_client()->ip);

client->init_done=1;

}

switch(mbuf[0]) {

case 1:

radegast_process_ecm(mbuf+2, mbuf[1]);

break;

default:

radegast_process_unknown(mbuf);

}

return NULL;

}

static int32_t radegast_send_ecm(struct s_client *client, ECM_REQUEST *er, uchar *UNUSED(buf))

{

int32_t n;

uchar provid_buf[8];

uchar header[22] = "\x02\x01\x00\x06\x08\x30\x30\x30\x30\x30\x30\x30\x30\x07\x04\x30\x30\x30\x38\x08\x01\x02";

uchar *ecmbuf;

if (!cs_malloc(&ecmbuf, er->ecmlen + 30))

return -1;

ecmbuf[0] = 1;

ecmbuf[1] = er->ecmlen + 30 - 2;

memcpy(ecmbuf + 2, header, sizeof(header));

for(n = 0; n < 4; n++) {

snprintf((char*)provid_buf+(n*2), sizeof(provid_buf)-(n*2), "%02X", ((uchar *)(&er->prid))[4 - 1 - n]);

}

ecmbuf[7] = provid_buf[0];

ecmbuf[8] = provid_buf[1];

ecmbuf[9] = provid_buf[2];

ecmbuf[10] = provid_buf[3];

ecmbuf[11] = provid_buf[4];

ecmbuf[12] = provid_buf[5];

ecmbuf[13] = provid_buf[6];

ecmbuf[14] = provid_buf[7];

ecmbuf[2 + sizeof(header)] = 0xa;

ecmbuf[3 + sizeof(header)] = 2;

ecmbuf[4 + sizeof(header)] = er->caid >> 8;

ecmbuf[5 + sizeof(header)] = er->caid & 0xff;

ecmbuf[6 + sizeof(header)] = 3;

ecmbuf[7 + sizeof(header)] = er->ecmlen;

memcpy(ecmbuf + 8 + sizeof(header), er->ecm, er->ecmlen);

ecmbuf[4] = er->caid >> 8;

client->reader->msg_idx = er->idx;

n = send(client->pfd, ecmbuf, er->ecmlen + 30, 0);

cs_debug_mask(D_TRACE,"radegast: sending ecm");

cs_ddump_mask(D_CLIENT, ecmbuf, er->ecmlen + 30, "ecm:");

free(ecmbuf);

return 0;

}

int32_t radegast_cli_init(struct s_client *cl)

{

int32_t handle;

cs_log("radegast: proxy %s:%d (fd=%d)",

cl->reader->device, cl->reader->r_port, cl->udp_fd);

handle = network_tcp_connection_open(cl->reader);

if(handle < 0) return -1;

cl->reader->tcp_connected = 2;

cl->reader->card_status = CARD_INSERTED;

cl->reader->last_g = cl->reader->last_s = time((time_t *)0);

cs_debug_mask(D_CLIENT, "radegast: last_s=%ld, last_g=%ld", cl->reader->last_s, cl->reader->last_g);

cl->pfd=cl->udp_fd;

return(0);

}

static void radegast_server_init(struct s_client *cl) {

if (!cl->init_done) {

if (IP_ISSET(cl->ip))

cs_log("radegast: new connection from %s", cs_inet_ntoa(cl->ip));

radegast_auth_client(cur_client()->ip);

cl->init_done=1;

}

return;

}

void module_radegast(struct s_module *ph)

{

static PTAB ptab; //since there is always only 1 radegast server running, this is threadsafe

ptab.ports[0].s_port = cfg.rad_port;

ph->ptab = &ptab;

ph->ptab->nports = 1;

ph->desc="radegast";

ph->type=MOD_CONN_TCP;

ph->listenertype = LIS_RADEGAST;

IP_ASSIGN(ph->s_ip, cfg.rad_srvip);

ph->s_handler=radegast_server;

ph->s_init=radegast_server_init;

ph->recv=radegast_recv;

ph->send_dcw=radegast_send_dcw;

ph->c_init=radegast_cli_init;

ph->c_recv_chk=radegast_recv_chk;

ph->c_send_ecm=radegast_send_ecm;

ph->num=R_RADEGAST;

}

#endif