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Improve operator profile support, including properly parsing operator…
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…_tune requests

Fixes #1046, hopefully
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@Jalle19
Jalle19 committed Jun 26, 2024
1 parent d853e7b commit fdcc5df
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Showing 2 changed files with 119 additions and 79 deletions.
196 changes: 117 additions & 79 deletions src/ca.c
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,23 @@ unsigned char dh_g[256] =
0x69, 0x87, 0x83, 0x06, 0x51, 0x80, 0xa5, 0x6e, 0xa6, 0x19, 0x7d, 0x3b,
0xef, 0xfb, 0xe0, 0x4a};

typedef struct opfr_operator_tune_descr {
double freq;
char pol;
double pos;
char east_west;
char delsys[8];
char mod[8];
double sr;
char fec[4];
} opfr_operator_tune_descr_t;

// EN 300 468, tables 36, 38, and 41
const char en300468_fec_map[12][4] = {"", "1/2", "2/3", "3/4", "5/6", "7/8",
"8/9", "3/5", "4/5", "9/10", "", ""};
const char en300468_pol_map[] = {'H', 'V', 'L', 'R'};
const char en300468_mod_map[4][8] = {"auto", "QPSK", "8PSK", "16QAM"};

static int ca_send_datetime(ca_device_t *d);
int populate_resources(ca_device_t *d, int *resource_ids);
int ca_write_apdu(ca_session_t *s, int resource, const void *data, int len);
Expand Down Expand Up @@ -1790,94 +1807,115 @@ static int CIPLUS_APP_SAS_handler(ca_session_t *session, int tag, uint8_t *data,
return 0;
} /* not working, just for fun */

static void parse_operator_tune_descriptor(const uint8_t *descr,
opfr_operator_tune_descr_t *out) {
// Frequency
char freq_buf[9];
sprintf(freq_buf, "%02X%02X%02X%02X", descr[2], descr[3], descr[4],
descr[5]);
out->freq = strtod(freq_buf, NULL) / 100;

// Orbital position, and polarity
char orb_buf[5];
sprintf(orb_buf, "%02X%02X", descr[6], descr[7]);
out->pos = strtod(orb_buf, NULL) / 10;
out->pol = (descr[8] & 0x60) >> 5;
out->east_west = descr[8] & (1 << 7) ? 'E' : 'W';

// Delivery system and modulation
strcpy(out->delsys, (descr[8] & (1 << 2)) ? "DVB-S2" : "DVB-S");
int mod = (descr[8] & 0x03);
strcpy(out->mod, en300468_mod_map[mod]);

// Symbol rate and FEC
char sr_buf[9];
sprintf(sr_buf, "%02X%02X%02X%02X", descr[9], descr[10], descr[11],
(descr[12] >> 4));
out->sr = strtod(sr_buf, NULL) / 100;
int fec = descr[12] & 0x0F;
strcpy(out->fec, en300468_fec_map[fec]);
}

static int CIPLUS_APP_OPRF_handler(ca_session_t *session, int tag,
uint8_t *data, int data_length) {
ca_device_t *d = session->ca;
char buf[400];
int pos, i;
pos = sprintf(buf, " ");
hexdump("CIPLUS_APP_OPRF_handler", data, data_length);

uint8_t data_oprf_search[9];
data_oprf_search[0] = 0x03; /* unattended mode bit=0 + length in bytes
of the service types */
data_oprf_search[1] = 0x01; /* service MPEG-2 television (0x01) */
data_oprf_search[2] = 0x16; /* service h264 SD (0x16) */
data_oprf_search[3] = 0x19; /* service h264 HD (0x19) */
data_oprf_search[4] = 0x02; /* length in bytes of the delivery_capability */
data_oprf_search[5] = 0x43; /* DVB-S */
data_oprf_search[6] = 0x79; /* DVB-S2 */
data_oprf_search[7] =
0x01; /* length in bytes of the application_capability */
data_oprf_search[8] = 0x00; /* System Software Update service */

uint8_t data_oprf_tune_status[64];
data_oprf_tune_status[0] = 0x01; // unprocessed descriptor_number
data_oprf_tune_status[1] = 0x50; // signal strength
data_oprf_tune_status[2] = 0x50; // signal quality
data_oprf_tune_status[3] = 0x00; // status 0 - OK
data_oprf_tune_status[4] = 0x0d; // lenght next part (13 bytes)
uint8_t data_oprf_search_start[] = {
0x06, // unattended mode + service types length
0x01, // advertise support for MPEG-2/H.264/HEVC TV and radio
0x02, 0x16, 0x19, 0x1F, 0x20,
0x04, // delivery capability length
0x43, // DVB-S
0x79, // DVB-S2
0x7F,
0x17, // DVB-S2X
0x00, // application capability length
};

uint8_t data_oprf_tune_status[] = {
0xFF, // descruptor number
0x00, // signal strength and quality
0x00,
(0x03 << 4), // status + 4 bit length
0x00, // length (last 8 bits)
};

switch (tag) {
case CIPLUS_TAG_OPERATOR_STATUS: /* operator_status 01 */
{
LOG("CAM_OPRF_operator_status_receive");
uint8_t tag_part = 0x04; /* operator_info_req */
if (data[1] & 0x20) // initialised_flag - profile initialised
tag_part = 0x08; /* operator_exit */
if (data[1] & 0x40) {
LOG("CI+ CA%d: operator profile %s initialised", d->id,
data[1] & 0x60 ? "" : "NOT ");
} else
LOG("CI+ CA%d: operator profile disabled", d->id);
ca_write_apdu(session, 0x9f9c00 | tag_part, 0x00, 0);
break;
}
case CIPLUS_TAG_OPERATOR_INFO: /* operator_info */
{
LOG("CAM_OPRF_operator_info_receive");
ca_write_apdu(session, 0x9f9c06, data_oprf_search, 9);
break;
}
case 0x9f9c03: /* operator_nit */
{
LOG("CAM_OPRF_operator_nit_receive");
/* operator_exit */
ca_write_apdu(session, 0x9f9c08, 0x00, 0);
break;
}
case CIPLUS_TAG_OPERATOR_SEARCH_STATUS: /* operator_search_status */
{
LOG("CAM_OPRF_operator_search_status_receive");

if (data[1] & 0x02) // refresh_request_flag == 2 (urgent request)
{
/* operator_search_start */
ca_write_apdu(session, 0x9f9c06, data_oprf_search, 9);
} else /* operator_nit */
ca_write_apdu(session, 0x9f9c02, 0x00, 0);
case CIPLUS_TAG_OPERATOR_STATUS:
case CIPLUS_TAG_OPERATOR_SEARCH_STATUS: {
// Parse the status and log some information
const char *apdu_name = tag == CIPLUS_TAG_OPERATOR_STATUS
? "operator_status"
: "operator_search_status";
int info_version = data[0] >> 5;
int profile_type = data[1] >> 6;
int initialized_flag = (data[1] & (1 << 5)) > 0;
int refresh_request_flag = data[1] & 0x3;
int error_flag = data[2] >> 4;

LOG("Received %s APDU: \n"
" info version: %d\n"
" profile type: %d\n"
" initialized: %d\n"
" refresh request: %d\n",
" error: %d\n", apdu_name, info_version, profile_type,
initialized_flag, refresh_request_flag, error_flag);

// Initiate operator_search_start if profile is uninitialized
if (!initialized_flag) {
LOG("Initializing operator_search_start since profile is not "
"initialized yet");
ca_write_apdu(session, CIPLUS_TAG_OPERATOR_SEARCH_START,
data_oprf_search_start,
sizeof(data_oprf_search_start));
}
break;
}
case CIPLUS_TAG_OPERATOR_TUNE: /* operator_tune */
{
char *pol = "H";
if (data[5] & 0x20)
pol = "V";
else if (data[5] & 0x40)
pol = "L";
else if (data[5] & 0x60)
pol = "R";
LOG("CAM_OPRF_operator_tune_receive");
for (i = 0; i < data_length; i++) {
pos += sprintf(buf + pos, "%02X ", data[i]);
data_oprf_tune_status[i + 5] = data[i + 2];
case CIPLUS_TAG_OPERATOR_TUNE: {
// Loop through the descriptors
int descr_len = data[1];
LOG("Received operator_tune APDU with %d descriptor bytes", descr_len);

uint8_t *descr;
int i;
for (i = 0; i < descr_len; i += 13) {
// Parse the descriptor
descr = data + 2 + i;
opfr_operator_tune_descr_t parsed_descr;
parse_operator_tune_descriptor(descr, &parsed_descr);

// Log the details about the transponders that should be tuned
LOG("CAM wants to tune to the following transponder: "
"%.2f%c @ %.1f%c, %s %s, SR %.2f, FEC %s",
parsed_descr.freq, parsed_descr.pol, parsed_descr.pos,
parsed_descr.east_west, parsed_descr.delsys, parsed_descr.mod,
parsed_descr.sr, parsed_descr.fec);
}
LOG("CI+ CA%d: %s", d->id, buf);
LOG("Please TUNE to transponder %x%x%x %c", data[2], data[3], data[4],
*pol);
// data_oprf_tune_status[13]=0xC6; //psk8 dvb-s2
sleep_msec(3 * 1000); // wait 3 secs
ca_write_apdu(session, 0x9f9c0a, data_oprf_tune_status, 18);

// Send an operator_tune_status response saying we failed to tune. The
// user will have to tune manually.
ca_write_apdu(session, CIPLUS_TAG_OPERATOR_TUNE_STATUS,
data_oprf_tune_status, sizeof(data_oprf_tune_status));
break;
}
default:
Expand Down
2 changes: 2 additions & 0 deletions src/ca.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -99,8 +99,10 @@
#define CIPLUS_TAG_FIRMWARE_UPGR_COMPLT 0x9f9d04
#define CIPLUS_TAG_OPERATOR_STATUS 0x9f9c01
#define CIPLUS_TAG_OPERATOR_INFO 0x9f9c05
#define CIPLUS_TAG_OPERATOR_SEARCH_START 0x9f9c06
#define CIPLUS_TAG_OPERATOR_SEARCH_STATUS 0x9f9c07
#define CIPLUS_TAG_OPERATOR_TUNE 0x9f9c09
#define CIPLUS_TAG_OPERATOR_TUNE_STATUS 0x9f9c0a

#define MAKE_SID_FOR_CA(id, idx) (id * 100 + idx)
#define MKRID(CLASS, TYPE, VERSION) \
Expand Down

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