Add support for Irdeto EMM
Patch by: opdenkamp
This commit is contained in:
Andreas Öman
parent
d57985481c
commit
e472434d01
2 changed files with 121 additions and 16 deletions
2
debian/changelog
vendored
2
debian/changelog
vendored
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@ -41,6 +41,8 @@ hts-tvheadend (2.11-WIP) hts; urgency=low
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there are errors. Also recordings that do not complete successfully
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are correctly reported as failed entries. Ticket #131
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* Add support for Irdeto EMM
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hts-tvheadend (2.10) hts; urgency=high
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* Fix a crash in HTSP server.
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135
src/cwc.c
135
src/cwc.c
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@ -49,6 +49,15 @@
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#define CWS_NETMSGSIZE 256
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#define CWS_FIRSTCMDNO 0xe0
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/**
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* cards for which emm updates are handled
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*/
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typedef enum {
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CARD_IRDETO,
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CARD_CONAX,
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CARD_UNKNOWN
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} card_type_t;
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typedef enum {
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MSG_CLIENT_2_SERVER_LOGIN = CWS_FIRSTCMDNO,
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MSG_CLIENT_2_SERVER_LOGIN_ACK,
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@ -195,6 +204,9 @@ typedef struct cwc {
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/* Emm forwarding */
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int cwc_forward_emm;
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/* Card type */
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card_type_t cwc_card_type;
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/* From configuration */
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uint8_t cwc_confedkey[14];
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@ -221,7 +233,9 @@ typedef struct cwc {
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static void cwc_transport_destroy(th_descrambler_t *td);
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extern char *cwc_krypt(const char *key, const char *salt);
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static void cwc_detect_card_type(cwc_t *cwc);
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void cwc_emm_conax(cwc_t *cwc, uint8_t *data, int len);
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void cwc_emm_irdeto(cwc_t *cwc, uint8_t *data, int len);
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/**
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*
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@ -516,6 +530,8 @@ cwc_decode_card_data_reply(cwc_t *cwc, uint8_t *msg, int len)
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cwc->cwc_ua[0], cwc->cwc_ua[1], cwc->cwc_ua[2], cwc->cwc_ua[3], cwc->cwc_ua[4], cwc->cwc_ua[5], cwc->cwc_ua[6], cwc->cwc_ua[7],
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nprov);
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cwc_detect_card_type(cwc);
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msg += 15;
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plen -= 12;
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@ -554,22 +570,54 @@ cwc_decode_card_data_reply(cwc_t *cwc, uint8_t *msg, int len)
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cwc->cwc_ua[4] || cwc->cwc_ua[5] ||
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cwc->cwc_ua[6] || cwc->cwc_ua[7]);
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if (!emm_allowed)
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tvhlog(LOG_INFO, "cwc", "%s: Will not forward EMMs (not allowed by server)",
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if (!emm_allowed) {
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tvhlog(LOG_INFO, "cwc",
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"%s: Will not forward EMMs (not allowed by server)",
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cwc->cwc_hostname);
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else if ((cwc->cwc_caid>>8) != 0x0b)
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tvhlog(LOG_INFO, "cwc", "%s: Will not forward EMMs (unsupported ca system)",
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cwc->cwc_hostname);
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else {
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} else if (cwc->cwc_card_type != CARD_UNKNOWN) {
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tvhlog(LOG_INFO, "cwc", "%s: Will forward EMMs",
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cwc->cwc_hostname);
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cwc->cwc_forward_emm = 1;
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} else {
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tvhlog(LOG_INFO, "cwc",
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"%s: Will not forward EMMs (unsupported CA system)",
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cwc->cwc_hostname);
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}
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}
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return 0;
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}
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/**
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* Detects the cam card type
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* If you want to add another card, have a look at
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* http://www.dvbservices.com/identifiers/ca_system_id?page=3
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*
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* based on the equivalent in sasc-ng
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*/
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static void
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cwc_detect_card_type(cwc_t *cwc)
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{
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uint8_t c_sys = cwc->cwc_caid >> 8;
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switch(c_sys) {
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case 0x17:
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case 0x06:
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cwc->cwc_card_type = CARD_IRDETO;
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tvhlog(LOG_INFO, "cwc", "%s: irdeto card",
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cwc->cwc_hostname);
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break;
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case 0x0b:
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cwc->cwc_card_type = CARD_CONAX;
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tvhlog(LOG_INFO, "cwc", "%s: conax card",
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cwc->cwc_hostname);
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break;
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default:
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cwc->cwc_card_type = CARD_UNKNOWN;
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tvhlog(LOG_INFO, "cwc", "%s: unknown card",
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cwc->cwc_hostname);
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}
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}
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/**
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* Login command
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@ -1036,16 +1084,71 @@ cwc_emm(uint8_t *data, int len)
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lock_assert(&global_lock);
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TAILQ_FOREACH(cwc, &cwcs, cwc_link)
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if(cwc->cwc_forward_emm && cwc->cwc_writer_running &&
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data[0] == 0x82 /* Conax */ ) {
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int i;
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for (i=0; i < cwc->cwc_num_providers; i++)
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if (memcmp(&data[3], &cwc->cwc_providers[i].sa[1], 7) == 0) {
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cwc_send_msg(cwc, data, len, 0, 1);
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break;
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}
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TAILQ_FOREACH(cwc, &cwcs, cwc_link) {
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if(cwc->cwc_forward_emm && cwc->cwc_writer_running) {
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switch (cwc->cwc_card_type) {
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case CARD_CONAX:
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cwc_emm_conax(cwc, data, len);
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break;
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case CARD_IRDETO:
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cwc_emm_irdeto(cwc, data, len);
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break;
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case CARD_UNKNOWN:
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break;
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}
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}
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}
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}
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/**
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* conax emm handler
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*/
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void
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cwc_emm_conax(cwc_t *cwc, uint8_t *data, int len)
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{
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if (data[0] == 0x82) {
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int i;
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for (i=0; i < cwc->cwc_num_providers; i++) {
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if (memcmp(&data[3], &cwc->cwc_providers[i].sa[1], 7) == 0) {
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cwc_send_msg(cwc, data, len, 0, 1);
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break;
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}
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}
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}
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}
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/**
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* irdeto emm handler
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* inspired by opensasc-ng, https://opensvn.csie.org/traccgi/opensascng/
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*/
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void
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cwc_emm_irdeto(cwc_t *cwc, uint8_t *data, int len)
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{
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int emm_mode = data[3] >> 3;
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int emm_len = data[3] & 0x07;
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int match = 0;
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if (emm_mode & 0x10){
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// try to match card
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match = (emm_mode == cwc->cwc_ua[4] &&
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(!emm_len || // zero length
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!memcmp(&data[4], &cwc->cwc_ua[5], emm_len))); // exact match
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} else {
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// try to match provider
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int i;
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for(i=0; i < cwc->cwc_num_providers; i++) {
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match = (emm_mode == cwc->cwc_providers[i].sa[4] &&
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(!emm_len || // zero length
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!memcmp(&data[4], &cwc->cwc_providers[i].sa[5], emm_len)));
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// exact match
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if (match) break;
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}
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}
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if (match)
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cwc_send_msg(cwc, data, len, 0, 1);
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}
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