vdr  1.7.31
ci.c
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1 /*
2  * ci.c: Common Interface
3  *
4  * See the main source file 'vdr.c' for copyright information and
5  * how to reach the author.
6  *
7  * $Id: ci.c 2.9 2012/05/29 11:13:40 kls Exp $
8  */
9 
10 #include "ci.h"
11 #include <ctype.h>
12 #include <linux/dvb/ca.h>
13 #include <malloc.h>
14 #include <netinet/in.h>
15 #include <poll.h>
16 #include <string.h>
17 #include <sys/ioctl.h>
18 #include <time.h>
19 #include <unistd.h>
20 #include "device.h"
21 #include "pat.h"
22 #include "tools.h"
23 
24 // Set these to 'true' for debug output:
25 static bool DumpTPDUDataTransfer = false;
26 static bool DebugProtocol = false;
27 static bool DumpPolls = false;
28 static bool DumpDateTime = false;
29 
30 #define dbgprotocol(a...) do { if (DebugProtocol) fprintf(stderr, a); } while (0)
31 
32 // --- Helper functions ------------------------------------------------------
33 
34 #define SIZE_INDICATOR 0x80
35 
36 static const uint8_t *GetLength(const uint8_t *Data, int &Length)
40 {
41  Length = *Data++;
42  if ((Length & SIZE_INDICATOR) != 0) {
43  int l = Length & ~SIZE_INDICATOR;
44  Length = 0;
45  for (int i = 0; i < l; i++)
46  Length = (Length << 8) | *Data++;
47  }
48  return Data;
49 }
50 
51 static uint8_t *SetLength(uint8_t *Data, int Length)
54 {
55  uint8_t *p = Data;
56  if (Length < 128)
57  *p++ = Length;
58  else {
59  int n = sizeof(Length);
60  for (int i = n - 1; i >= 0; i--) {
61  int b = (Length >> (8 * i)) & 0xFF;
62  if (p != Data || b)
63  *++p = b;
64  }
65  *Data = (p - Data) | SIZE_INDICATOR;
66  p++;
67  }
68  return p;
69 }
70 
71 static char *CopyString(int Length, const uint8_t *Data)
74 {
75  // Some CAMs send funny characters at the beginning of strings.
76  // Let's just skip them:
77  while (Length > 0 && (*Data == ' ' || *Data == 0x05 || *Data == 0x96 || *Data == 0x97)) {
78  Length--;
79  Data++;
80  }
81  char *s = MALLOC(char, Length + 1);
82  strncpy(s, (char *)Data, Length);
83  s[Length] = 0;
84  // The character 0x8A is used as newline, so let's put a real '\n' in there:
85  strreplace(s, 0x8A, '\n');
86  return s;
87 }
88 
89 static char *GetString(int &Length, const uint8_t **Data)
93 {
94  if (Length > 0 && Data && *Data) {
95  int l = 0;
96  const uint8_t *d = GetLength(*Data, l);
97  char *s = CopyString(l, d);
98  Length -= d - *Data + l;
99  *Data = d + l;
100  return s;
101  }
102  return NULL;
103 }
104 
105 // --- cTPDU -----------------------------------------------------------------
106 
107 #define MAX_TPDU_SIZE 2048
108 #define MAX_TPDU_DATA (MAX_TPDU_SIZE - 4)
109 
110 #define DATA_INDICATOR 0x80
111 
112 #define T_SB 0x80
113 #define T_RCV 0x81
114 #define T_CREATE_TC 0x82
115 #define T_CTC_REPLY 0x83
116 #define T_DELETE_TC 0x84
117 #define T_DTC_REPLY 0x85
118 #define T_REQUEST_TC 0x86
119 #define T_NEW_TC 0x87
120 #define T_TC_ERROR 0x88
121 #define T_DATA_LAST 0xA0
122 #define T_DATA_MORE 0xA1
123 
124 class cTPDU {
125 private:
126  int size;
128  const uint8_t *GetData(const uint8_t *Data, int &Length);
129 public:
130  cTPDU(void) { size = 0; }
131  cTPDU(uint8_t Slot, uint8_t Tcid, uint8_t Tag, int Length = 0, const uint8_t *Data = NULL);
132  uint8_t Slot(void) { return buffer[0]; }
133  uint8_t Tcid(void) { return buffer[1]; }
134  uint8_t Tag(void) { return buffer[2]; }
135  const uint8_t *Data(int &Length) { return GetData(buffer + 3, Length); }
136  uint8_t Status(void);
137  uint8_t *Buffer(void) { return buffer; }
138  int Size(void) { return size; }
139  void SetSize(int Size) { size = Size; }
140  int MaxSize(void) { return sizeof(buffer); }
141  void Dump(int SlotNumber, bool Outgoing);
142  };
143 
144 cTPDU::cTPDU(uint8_t Slot, uint8_t Tcid, uint8_t Tag, int Length, const uint8_t *Data)
145 {
146  size = 0;
147  buffer[0] = Slot;
148  buffer[1] = Tcid;
149  buffer[2] = Tag;
150  switch (Tag) {
151  case T_RCV:
152  case T_CREATE_TC:
153  case T_CTC_REPLY:
154  case T_DELETE_TC:
155  case T_DTC_REPLY:
156  case T_REQUEST_TC:
157  buffer[3] = 1; // length
158  buffer[4] = Tcid;
159  size = 5;
160  break;
161  case T_NEW_TC:
162  case T_TC_ERROR:
163  if (Length == 1) {
164  buffer[3] = 2; // length
165  buffer[4] = Tcid;
166  buffer[5] = Data[0];
167  size = 6;
168  }
169  else
170  esyslog("ERROR: invalid data length for TPDU tag 0x%02X: %d (%d/%d)", Tag, Length, Slot, Tcid);
171  break;
172  case T_DATA_LAST:
173  case T_DATA_MORE:
174  if (Length <= MAX_TPDU_DATA) {
175  uint8_t *p = buffer + 3;
176  p = SetLength(p, Length + 1);
177  *p++ = Tcid;
178  if (Length)
179  memcpy(p, Data, Length);
180  size = Length + (p - buffer);
181  }
182  else
183  esyslog("ERROR: invalid data length for TPDU tag 0x%02X: %d (%d/%d)", Tag, Length, Slot, Tcid);
184  break;
185  default:
186  esyslog("ERROR: unknown TPDU tag: 0x%02X (%d/%d)", Tag, Slot, Tcid);
187  }
188  }
189 
190 void cTPDU::Dump(int SlotNumber, bool Outgoing)
191 {
192  if (DumpTPDUDataTransfer && (DumpPolls || Tag() != T_SB)) {
193 #define MAX_DUMP 256
194  fprintf(stderr, " %d: %s ", SlotNumber, Outgoing ? "-->" : "<--");
195  for (int i = 0; i < size && i < MAX_DUMP; i++)
196  fprintf(stderr, "%02X ", buffer[i]);
197  fprintf(stderr, "%s\n", size >= MAX_DUMP ? "..." : "");
198  if (!Outgoing) {
199  fprintf(stderr, " ");
200  for (int i = 0; i < size && i < MAX_DUMP; i++)
201  fprintf(stderr, "%2c ", isprint(buffer[i]) ? buffer[i] : '.');
202  fprintf(stderr, "%s\n", size >= MAX_DUMP ? "..." : "");
203  }
204  }
205 }
206 
207 const uint8_t *cTPDU::GetData(const uint8_t *Data, int &Length)
208 {
209  if (size) {
210  Data = GetLength(Data, Length);
211  if (Length) {
212  Length--; // the first byte is always the tcid
213  return Data + 1;
214  }
215  }
216  return NULL;
217 }
218 
219 uint8_t cTPDU::Status(void)
220 {
221  if (size >= 4 && buffer[size - 4] == T_SB && buffer[size - 3] == 2)
222  return buffer[size - 1];
223  return 0;
224 }
225 
226 // --- cCiTransportConnection ------------------------------------------------
227 
228 #define MAX_SESSIONS_PER_TC 16
229 
231 private:
234  uint8_t tcid;
238  bool hasUserIO;
241  cCiSession *sessions[MAX_SESSIONS_PER_TC + 1]; // session numbering starts with 1
242  void SendTPDU(uint8_t Tag, int Length = 0, const uint8_t *Data = NULL);
243  void SendTag(uint8_t Tag, uint16_t SessionId, uint32_t ResourceId = 0, int Status = -1);
244  void Poll(void);
245  uint32_t ResourceIdToInt(const uint8_t *Data);
246  cCiSession *GetSessionBySessionId(uint16_t SessionId);
247  void OpenSession(int Length, const uint8_t *Data);
248  void CloseSession(uint16_t SessionId);
249  void HandleSessions(cTPDU *TPDU);
250 public:
252  virtual ~cCiTransportConnection();
253  cCamSlot *CamSlot(void) { return camSlot; }
254  uint8_t Tcid(void) const { return tcid; }
257  const char *GetCamName(void);
258  bool Ready(void);
259  bool HasUserIO(void) { return hasUserIO; }
260  void SendData(int Length, const uint8_t *Data);
261  bool Process(cTPDU *TPDU = NULL);
262  cCiSession *GetSessionByResourceId(uint32_t ResourceId);
263  };
264 
265 // --- cCiSession ------------------------------------------------------------
266 
267 // Session Tags:
268 
269 #define ST_SESSION_NUMBER 0x90
270 #define ST_OPEN_SESSION_REQUEST 0x91
271 #define ST_OPEN_SESSION_RESPONSE 0x92
272 #define ST_CREATE_SESSION 0x93
273 #define ST_CREATE_SESSION_RESPONSE 0x94
274 #define ST_CLOSE_SESSION_REQUEST 0x95
275 #define ST_CLOSE_SESSION_RESPONSE 0x96
276 
277 // Session Status:
278 
279 #define SS_OK 0x00
280 #define SS_NOT_ALLOCATED 0xF0
281 
282 // Resource Identifiers:
283 
284 #define RI_RESOURCE_MANAGER 0x00010041
285 #define RI_APPLICATION_INFORMATION 0x00020041
286 #define RI_CONDITIONAL_ACCESS_SUPPORT 0x00030041
287 #define RI_HOST_CONTROL 0x00200041
288 #define RI_DATE_TIME 0x00240041
289 #define RI_MMI 0x00400041
290 
291 // Application Object Tags:
292 
293 #define AOT_NONE 0x000000
294 #define AOT_PROFILE_ENQ 0x9F8010
295 #define AOT_PROFILE 0x9F8011
296 #define AOT_PROFILE_CHANGE 0x9F8012
297 #define AOT_APPLICATION_INFO_ENQ 0x9F8020
298 #define AOT_APPLICATION_INFO 0x9F8021
299 #define AOT_ENTER_MENU 0x9F8022
300 #define AOT_CA_INFO_ENQ 0x9F8030
301 #define AOT_CA_INFO 0x9F8031
302 #define AOT_CA_PMT 0x9F8032
303 #define AOT_CA_PMT_REPLY 0x9F8033
304 #define AOT_TUNE 0x9F8400
305 #define AOT_REPLACE 0x9F8401
306 #define AOT_CLEAR_REPLACE 0x9F8402
307 #define AOT_ASK_RELEASE 0x9F8403
308 #define AOT_DATE_TIME_ENQ 0x9F8440
309 #define AOT_DATE_TIME 0x9F8441
310 #define AOT_CLOSE_MMI 0x9F8800
311 #define AOT_DISPLAY_CONTROL 0x9F8801
312 #define AOT_DISPLAY_REPLY 0x9F8802
313 #define AOT_TEXT_LAST 0x9F8803
314 #define AOT_TEXT_MORE 0x9F8804
315 #define AOT_KEYPAD_CONTROL 0x9F8805
316 #define AOT_KEYPRESS 0x9F8806
317 #define AOT_ENQ 0x9F8807
318 #define AOT_ANSW 0x9F8808
319 #define AOT_MENU_LAST 0x9F8809
320 #define AOT_MENU_MORE 0x9F880A
321 #define AOT_MENU_ANSW 0x9F880B
322 #define AOT_LIST_LAST 0x9F880C
323 #define AOT_LIST_MORE 0x9F880D
324 #define AOT_SUBTITLE_SEGMENT_LAST 0x9F880E
325 #define AOT_SUBTITLE_SEGMENT_MORE 0x9F880F
326 #define AOT_DISPLAY_MESSAGE 0x9F8810
327 #define AOT_SCENE_END_MARK 0x9F8811
328 #define AOT_SCENE_DONE 0x9F8812
329 #define AOT_SCENE_CONTROL 0x9F8813
330 #define AOT_SUBTITLE_DOWNLOAD_LAST 0x9F8814
331 #define AOT_SUBTITLE_DOWNLOAD_MORE 0x9F8815
332 #define AOT_FLUSH_DOWNLOAD 0x9F8816
333 #define AOT_DOWNLOAD_REPLY 0x9F8817
334 #define AOT_COMMS_CMD 0x9F8C00
335 #define AOT_CONNECTION_DESCRIPTOR 0x9F8C01
336 #define AOT_COMMS_REPLY 0x9F8C02
337 #define AOT_COMMS_SEND_LAST 0x9F8C03
338 #define AOT_COMMS_SEND_MORE 0x9F8C04
339 #define AOT_COMMS_RCV_LAST 0x9F8C05
340 #define AOT_COMMS_RCV_MORE 0x9F8C06
341 
342 class cCiSession {
343 private:
344  uint16_t sessionId;
345  uint32_t resourceId;
347 protected:
348  int GetTag(int &Length, const uint8_t **Data);
349  const uint8_t *GetData(const uint8_t *Data, int &Length);
350  void SendData(int Tag, int Length = 0, const uint8_t *Data = NULL);
351  cCiTransportConnection *Tc(void) { return tc; }
352 public:
354  virtual ~cCiSession();
355  uint16_t SessionId(void) { return sessionId; }
356  uint32_t ResourceId(void) { return resourceId; }
357  virtual bool HasUserIO(void) { return false; }
358  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
359  };
360 
361 cCiSession::cCiSession(uint16_t SessionId, uint32_t ResourceId, cCiTransportConnection *Tc)
362 {
365  tc = Tc;
366 }
367 
369 {
370 }
371 
372 int cCiSession::GetTag(int &Length, const uint8_t **Data)
376 {
377  if (Length >= 3 && Data && *Data) {
378  int t = 0;
379  for (int i = 0; i < 3; i++)
380  t = (t << 8) | *(*Data)++;
381  Length -= 3;
382  return t;
383  }
384  return AOT_NONE;
385 }
386 
387 const uint8_t *cCiSession::GetData(const uint8_t *Data, int &Length)
388 {
389  Data = GetLength(Data, Length);
390  return Length ? Data : NULL;
391 }
392 
393 void cCiSession::SendData(int Tag, int Length, const uint8_t *Data)
394 {
395  uint8_t buffer[2048];
396  uint8_t *p = buffer;
397  *p++ = ST_SESSION_NUMBER;
398  *p++ = 0x02;
399  *p++ = (sessionId >> 8) & 0xFF;
400  *p++ = sessionId & 0xFF;
401  *p++ = (Tag >> 16) & 0xFF;
402  *p++ = (Tag >> 8) & 0xFF;
403  *p++ = Tag & 0xFF;
404  p = SetLength(p, Length);
405  if (p - buffer + Length < int(sizeof(buffer))) {
406  memcpy(p, Data, Length);
407  p += Length;
408  tc->SendData(p - buffer, buffer);
409  }
410  else
411  esyslog("ERROR: CAM %d: data length (%d) exceeds buffer size", Tc()->CamSlot()->SlotNumber(), Length);
412 }
413 
414 void cCiSession::Process(int Length, const uint8_t *Data)
415 {
416 }
417 
418 // --- cCiResourceManager ----------------------------------------------------
419 
421 private:
422  int state;
423 public:
425  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
426  };
427 
429 :cCiSession(SessionId, RI_RESOURCE_MANAGER, Tc)
430 {
431  dbgprotocol("Slot %d: new Resource Manager (session id %d)\n", Tc->CamSlot()->SlotNumber(), SessionId);
432  state = 0;
433 }
434 
435 void cCiResourceManager::Process(int Length, const uint8_t *Data)
436 {
437  if (Data) {
438  int Tag = GetTag(Length, &Data);
439  switch (Tag) {
440  case AOT_PROFILE_ENQ: {
441  dbgprotocol("Slot %d: <== Profile Enquiry (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
442  uint32_t resources[] = { htonl(RI_RESOURCE_MANAGER),
445  htonl(RI_DATE_TIME),
446  htonl(RI_MMI)
447  };
448  dbgprotocol("Slot %d: ==> Profile (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
449  SendData(AOT_PROFILE, sizeof(resources), (uint8_t*)resources);
450  state = 3;
451  }
452  break;
453  case AOT_PROFILE: {
454  dbgprotocol("Slot %d: <== Profile (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
455  if (state == 1) {
456  int l = 0;
457  const uint8_t *d = GetData(Data, l);
458  if (l > 0 && d)
459  esyslog("ERROR: CAM %d: resource manager: unexpected data", Tc()->CamSlot()->SlotNumber());
460  dbgprotocol("Slot %d: ==> Profile Change (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
462  state = 2;
463  }
464  else {
465  esyslog("ERROR: CAM %d: resource manager: unexpected tag %06X in state %d", Tc()->CamSlot()->SlotNumber(), Tag, state);
466  }
467  }
468  break;
469  default: esyslog("ERROR: CAM %d: resource manager: unknown tag %06X", Tc()->CamSlot()->SlotNumber(), Tag);
470  }
471  }
472  else if (state == 0) {
473  dbgprotocol("Slot %d: ==> Profile Enq (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
475  state = 1;
476  }
477 }
478 
479 // --- cCiApplicationInformation ---------------------------------------------
480 
482 private:
483  int state;
487  char *menuString;
488 public:
490  virtual ~cCiApplicationInformation();
491  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
492  bool EnterMenu(void);
493  const char *GetMenuString(void) { return menuString; }
494  };
495 
497 :cCiSession(SessionId, RI_APPLICATION_INFORMATION, Tc)
498 {
499  dbgprotocol("Slot %d: new Application Information (session id %d)\n", Tc->CamSlot()->SlotNumber(), SessionId);
500  state = 0;
501  menuString = NULL;
502 }
503 
505 {
506  free(menuString);
507 }
508 
509 void cCiApplicationInformation::Process(int Length, const uint8_t *Data)
510 {
511  if (Data) {
512  int Tag = GetTag(Length, &Data);
513  switch (Tag) {
514  case AOT_APPLICATION_INFO: {
515  dbgprotocol("Slot %d: <== Application Info (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
516  int l = 0;
517  const uint8_t *d = GetData(Data, l);
518  if ((l -= 1) < 0) break;
519  applicationType = *d++;
520  if ((l -= 2) < 0) break;
521  applicationManufacturer = ntohs(get_unaligned((uint16_t *)d));
522  d += 2;
523  if ((l -= 2) < 0) break;
524  manufacturerCode = ntohs(get_unaligned((uint16_t *)d));
525  d += 2;
526  free(menuString);
527  menuString = GetString(l, &d);
528  isyslog("CAM %d: %s, %02X, %04X, %04X", Tc()->CamSlot()->SlotNumber(), menuString, applicationType, applicationManufacturer, manufacturerCode);
529  state = 2;
530  }
531  break;
532  default: esyslog("ERROR: CAM %d: application information: unknown tag %06X", Tc()->CamSlot()->SlotNumber(), Tag);
533  }
534  }
535  else if (state == 0) {
536  dbgprotocol("Slot %d: ==> Application Info Enq (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
538  state = 1;
539  }
540 }
541 
543 {
544  if (state == 2) {
545  dbgprotocol("Slot %d: ==> Enter Menu (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
547  return true;
548  }
549  return false;
550 }
551 
552 // --- cCiCaPmt --------------------------------------------------------------
553 
554 #define MAXCASYSTEMIDS 64
555 
556 // Ca Pmt List Management:
557 
558 #define CPLM_MORE 0x00
559 #define CPLM_FIRST 0x01
560 #define CPLM_LAST 0x02
561 #define CPLM_ONLY 0x03
562 #define CPLM_ADD 0x04
563 #define CPLM_UPDATE 0x05
564 
565 // Ca Pmt Cmd Ids:
566 
567 #define CPCI_OK_DESCRAMBLING 0x01
568 #define CPCI_OK_MMI 0x02
569 #define CPCI_QUERY 0x03
570 #define CPCI_NOT_SELECTED 0x04
571 
572 class cCiCaPmt : public cListObject {
574 private:
575  uint8_t cmdId;
576  int length;
578  uint8_t capmt[2048];
579  int source;
582  int caSystemIds[MAXCASYSTEMIDS + 1]; // list is zero terminated!
583  void AddCaDescriptors(int Length, const uint8_t *Data);
584 public:
585  cCiCaPmt(uint8_t CmdId, int Source, int Transponder, int ProgramNumber, const int *CaSystemIds);
586  uint8_t CmdId(void) { return cmdId; }
587  void SetListManagement(uint8_t ListManagement);
588  uint8_t ListManagement(void) { return capmt[0]; }
589  void AddPid(int Pid, uint8_t StreamType);
590  };
591 
592 cCiCaPmt::cCiCaPmt(uint8_t CmdId, int Source, int Transponder, int ProgramNumber, const int *CaSystemIds)
593 {
594  cmdId = CmdId;
595  source = Source;
596  transponder = Transponder;
597  programNumber = ProgramNumber;
598  int i = 0;
599  if (CaSystemIds) {
600  for (; CaSystemIds[i]; i++)
601  caSystemIds[i] = CaSystemIds[i];
602  }
603  caSystemIds[i] = 0;
604  uint8_t caDescriptors[512];
605  int caDescriptorsLength = GetCaDescriptors(source, transponder, programNumber, caSystemIds, sizeof(caDescriptors), caDescriptors, 0);
606  length = 0;
607  capmt[length++] = CPLM_ONLY;
608  capmt[length++] = (ProgramNumber >> 8) & 0xFF;
609  capmt[length++] = ProgramNumber & 0xFF;
610  capmt[length++] = 0x01; // version_number, current_next_indicator - apparently vn doesn't matter, but cni must be 1
612  capmt[length++] = 0x00; // program_info_length H (at program level)
613  capmt[length++] = 0x00; // program_info_length L
614  AddCaDescriptors(caDescriptorsLength, caDescriptors);
615 }
616 
617 void cCiCaPmt::SetListManagement(uint8_t ListManagement)
618 {
619  capmt[0] = ListManagement;
620 }
621 
622 void cCiCaPmt::AddPid(int Pid, uint8_t StreamType)
623 {
624  if (Pid) {
625  uint8_t caDescriptors[512];
626  int caDescriptorsLength = GetCaDescriptors(source, transponder, programNumber, caSystemIds, sizeof(caDescriptors), caDescriptors, Pid);
627  //XXX buffer overflow check???
628  capmt[length++] = StreamType;
629  capmt[length++] = (Pid >> 8) & 0xFF;
630  capmt[length++] = Pid & 0xFF;
632  capmt[length++] = 0x00; // ES_info_length H (at ES level)
633  capmt[length++] = 0x00; // ES_info_length L
634  AddCaDescriptors(caDescriptorsLength, caDescriptors);
635  }
636 }
637 
638 void cCiCaPmt::AddCaDescriptors(int Length, const uint8_t *Data)
639 {
640  if (esInfoLengthPos) {
641  if (length + Length < int(sizeof(capmt))) {
642  if (Length || cmdId == CPCI_QUERY) {
643  capmt[length++] = cmdId;
644  memcpy(capmt + length, Data, Length);
645  length += Length;
646  int l = length - esInfoLengthPos - 2;
647  capmt[esInfoLengthPos] = (l >> 8) & 0xFF;
648  capmt[esInfoLengthPos + 1] = l & 0xFF;
649  }
650  }
651  else
652  esyslog("ERROR: buffer overflow in CA descriptor");
653  esInfoLengthPos = 0;
654  }
655  else
656  esyslog("ERROR: adding CA descriptor without Pid!");
657 }
658 
659 // --- cCiConditionalAccessSupport -------------------------------------------
660 
661 // CA Enable Ids:
662 
663 #define CAEI_POSSIBLE 0x01
664 #define CAEI_POSSIBLE_COND_PURCHASE 0x02
665 #define CAEI_POSSIBLE_COND_TECHNICAL 0x03
666 #define CAEI_NOT_POSSIBLE_ENTITLEMENT 0x71
667 #define CAEI_NOT_POSSIBLE_TECHNICAL 0x73
668 
669 #define CA_ENABLE_FLAG 0x80
670 
671 #define CA_ENABLE(x) (((x) & CA_ENABLE_FLAG) ? (x) & ~CA_ENABLE_FLAG : 0)
672 
673 #define QUERY_WAIT_TIME 1000 // ms to wait before sending a query
674 #define QUERY_REPLY_TIMEOUT 2000 // ms to wait for a reply to a query
675 
677 private:
678  int state;
680  int caSystemIds[MAXCASYSTEMIDS + 1]; // list is zero terminated!
683 public:
685  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
686  const int *GetCaSystemIds(void) { return caSystemIds; }
687  void SendPMT(cCiCaPmt *CaPmt);
688  bool RepliesToQuery(void) { return repliesToQuery; }
689  bool Ready(void) { return state >= 4; }
690  bool ReceivedReply(void) { return state >= 5; }
691  bool CanDecrypt(void) { return state == 6; }
692  };
693 
696 {
697  dbgprotocol("Slot %d: new Conditional Access Support (session id %d)\n", Tc->CamSlot()->SlotNumber(), SessionId);
698  state = 0; // inactive
699  caSystemIds[numCaSystemIds = 0] = 0;
700  repliesToQuery = false;
701 }
702 
703 void cCiConditionalAccessSupport::Process(int Length, const uint8_t *Data)
704 {
705  if (Data) {
706  int Tag = GetTag(Length, &Data);
707  switch (Tag) {
708  case AOT_CA_INFO: {
709  dbgprotocol("Slot %d: <== Ca Info (%d)", Tc()->CamSlot()->SlotNumber(), SessionId());
710  numCaSystemIds = 0;
711  int l = 0;
712  const uint8_t *d = GetData(Data, l);
713  while (l > 1) {
714  uint16_t id = ((uint16_t)(*d) << 8) | *(d + 1);
715  dbgprotocol(" %04X", id);
716  d += 2;
717  l -= 2;
719  caSystemIds[numCaSystemIds++] = id;
720  else {
721  esyslog("ERROR: CAM %d: too many CA system IDs!", Tc()->CamSlot()->SlotNumber());
722  break;
723  }
724  }
726  dbgprotocol("\n");
727  if (state == 1) {
728  timer.Set(QUERY_WAIT_TIME); // WORKAROUND: Alphacrypt 3.09 doesn't reply to QUERY immediately after reset
729  state = 2; // got ca info
730  }
731  }
732  break;
733  case AOT_CA_PMT_REPLY: {
734  dbgprotocol("Slot %d: <== Ca Pmt Reply (%d)", Tc()->CamSlot()->SlotNumber(), SessionId());
735  if (!repliesToQuery) {
736  dsyslog("CAM %d: replies to QUERY - multi channel decryption possible", Tc()->CamSlot()->SlotNumber());
737  repliesToQuery = true;
738  }
739  state = 5; // got ca pmt reply
740  int l = 0;
741  const uint8_t *d = GetData(Data, l);
742  if (l > 1) {
743  uint16_t pnr = ((uint16_t)(*d) << 8) | *(d + 1);
744  dbgprotocol(" %d", pnr);
745  d += 2;
746  l -= 2;
747  if (l > 0) {
748  dbgprotocol(" %02X", *d);
749  d += 1;
750  l -= 1;
751  if (l > 0) {
752  if (l % 3 == 0 && l > 1) {
753  // The EN50221 standard defines that the next byte is supposed
754  // to be the CA_enable value at programme level. However, there are
755  // CAMs (for instance the AlphaCrypt with firmware <= 3.05) that
756  // insert a two byte length field here.
757  // This is a workaround to skip this length field:
758  uint16_t len = ((uint16_t)(*d) << 8) | *(d + 1);
759  if (len == l - 2) {
760  d += 2;
761  l -= 2;
762  }
763  }
764  unsigned char caepl = *d;
765  dbgprotocol(" %02X", caepl);
766  d += 1;
767  l -= 1;
768  bool ok = true;
769  if (l <= 2)
770  ok = CA_ENABLE(caepl) == CAEI_POSSIBLE;
771  while (l > 2) {
772  uint16_t pid = ((uint16_t)(*d) << 8) | *(d + 1);
773  unsigned char caees = *(d + 2);
774  dbgprotocol(" %d=%02X", pid, caees);
775  d += 3;
776  l -= 3;
777  if (CA_ENABLE(caees) != CAEI_POSSIBLE)
778  ok = false;
779  }
780  if (ok)
781  state = 6; // descrambling possible
782  }
783  }
784  }
785  dbgprotocol("\n");
786  }
787  break;
788  default: esyslog("ERROR: CAM %d: conditional access support: unknown tag %06X", Tc()->CamSlot()->SlotNumber(), Tag);
789  }
790  }
791  else if (state == 0) {
792  dbgprotocol("Slot %d: ==> Ca Info Enq (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
794  state = 1; // enquired ca info
795  }
796  else if (state == 2 && timer.TimedOut()) {
797  cCiCaPmt CaPmt(CPCI_QUERY, 0, 0, 0, NULL);
798  SendPMT(&CaPmt);
800  state = 3; // waiting for reply
801  }
802  else if (state == 3 && timer.TimedOut()) {
803  dsyslog("CAM %d: doesn't reply to QUERY - only a single channel can be decrypted", Tc()->CamSlot()->SlotNumber());
804  state = 4; // normal operation
805  }
806 }
807 
809 {
810  if (CaPmt && state >= 2) {
811  dbgprotocol("Slot %d: ==> Ca Pmt (%d) %d %d\n", Tc()->CamSlot()->SlotNumber(), SessionId(), CaPmt->ListManagement(), CaPmt->CmdId());
812  SendData(AOT_CA_PMT, CaPmt->length, CaPmt->capmt);
813  state = 4; // sent ca pmt
814  }
815 }
816 
817 // --- cCiDateTime -----------------------------------------------------------
818 
819 class cCiDateTime : public cCiSession {
820 private:
821  int interval;
822  time_t lastTime;
823  void SendDateTime(void);
824 public:
826  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
827  };
828 
830 :cCiSession(SessionId, RI_DATE_TIME, Tc)
831 {
832  interval = 0;
833  lastTime = 0;
834  dbgprotocol("Slot %d: new Date Time (session id %d)\n", Tc->CamSlot()->SlotNumber(), SessionId);
835 }
836 
838 {
839  time_t t = time(NULL);
840  struct tm tm_gmt;
841  struct tm tm_loc;
842  if (gmtime_r(&t, &tm_gmt) && localtime_r(&t, &tm_loc)) {
843  int Y = tm_gmt.tm_year;
844  int M = tm_gmt.tm_mon + 1;
845  int D = tm_gmt.tm_mday;
846  int L = (M == 1 || M == 2) ? 1 : 0;
847  int MJD = 14956 + D + int((Y - L) * 365.25) + int((M + 1 + L * 12) * 30.6001);
848 #define DEC2BCD(d) (((d / 10) << 4) + (d % 10))
849  struct tTime { uint16_t mjd; uint8_t h, m, s; short offset; };
850  tTime T = { mjd : htons(MJD), h : DEC2BCD(tm_gmt.tm_hour), m : DEC2BCD(tm_gmt.tm_min), s : DEC2BCD(tm_gmt.tm_sec), offset : htons(tm_loc.tm_gmtoff / 60) };
851  bool OldDumpTPDUDataTransfer = DumpTPDUDataTransfer;
853  if (DumpDateTime)
854  dbgprotocol("Slot %d: ==> Date Time (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
855  SendData(AOT_DATE_TIME, 7, (uint8_t*)&T);
856  DumpTPDUDataTransfer = OldDumpTPDUDataTransfer;
857  }
858 }
859 
860 void cCiDateTime::Process(int Length, const uint8_t *Data)
861 {
862  if (Data) {
863  int Tag = GetTag(Length, &Data);
864  switch (Tag) {
865  case AOT_DATE_TIME_ENQ: {
866  interval = 0;
867  int l = 0;
868  const uint8_t *d = GetData(Data, l);
869  if (l > 0)
870  interval = *d;
871  dbgprotocol("Slot %d: <== Date Time Enq (%d), interval = %d\n", Tc()->CamSlot()->SlotNumber(), SessionId(), interval);
872  lastTime = time(NULL);
873  SendDateTime();
874  }
875  break;
876  default: esyslog("ERROR: CAM %d: date time: unknown tag %06X", Tc()->CamSlot()->SlotNumber(), Tag);
877  }
878  }
879  else if (interval && time(NULL) - lastTime > interval) {
880  lastTime = time(NULL);
881  SendDateTime();
882  }
883 }
884 
885 // --- cCiMMI ----------------------------------------------------------------
886 
887 // Display Control Commands:
888 
889 #define DCC_SET_MMI_MODE 0x01
890 #define DCC_DISPLAY_CHARACTER_TABLE_LIST 0x02
891 #define DCC_INPUT_CHARACTER_TABLE_LIST 0x03
892 #define DCC_OVERLAY_GRAPHICS_CHARACTERISTICS 0x04
893 #define DCC_FULL_SCREEN_GRAPHICS_CHARACTERISTICS 0x05
894 
895 // MMI Modes:
896 
897 #define MM_HIGH_LEVEL 0x01
898 #define MM_LOW_LEVEL_OVERLAY_GRAPHICS 0x02
899 #define MM_LOW_LEVEL_FULL_SCREEN_GRAPHICS 0x03
900 
901 // Display Reply IDs:
902 
903 #define DRI_MMI_MODE_ACK 0x01
904 #define DRI_LIST_DISPLAY_CHARACTER_TABLES 0x02
905 #define DRI_LIST_INPUT_CHARACTER_TABLES 0x03
906 #define DRI_LIST_GRAPHIC_OVERLAY_CHARACTERISTICS 0x04
907 #define DRI_LIST_FULL_SCREEN_GRAPHIC_CHARACTERISTICS 0x05
908 #define DRI_UNKNOWN_DISPLAY_CONTROL_CMD 0xF0
909 #define DRI_UNKNOWN_MMI_MODE 0xF1
910 #define DRI_UNKNOWN_CHARACTER_TABLE 0xF2
911 
912 // Enquiry Flags:
913 
914 #define EF_BLIND 0x01
915 
916 // Answer IDs:
917 
918 #define AI_CANCEL 0x00
919 #define AI_ANSWER 0x01
920 
921 class cCiMMI : public cCiSession {
922 private:
923  char *GetText(int &Length, const uint8_t **Data);
926 public:
928  virtual ~cCiMMI();
929  virtual void Process(int Length = 0, const uint8_t *Data = NULL);
930  virtual bool HasUserIO(void) { return menu || enquiry; }
931  cCiMenu *Menu(bool Clear = false);
932  cCiEnquiry *Enquiry(bool Clear = false);
933  void SendMenuAnswer(uint8_t Selection);
934  bool SendAnswer(const char *Text);
935  bool SendCloseMMI(void);
936  };
937 
938 cCiMMI::cCiMMI(uint16_t SessionId, cCiTransportConnection *Tc)
939 :cCiSession(SessionId, RI_MMI, Tc)
940 {
941  dbgprotocol("Slot %d: new MMI (session id %d)\n", Tc->CamSlot()->SlotNumber(), SessionId);
942  menu = fetchedMenu = NULL;
943  enquiry = fetchedEnquiry = NULL;
944 }
945 
947 {
948  if (fetchedMenu) {
949  cMutexLock MutexLock(fetchedMenu->mutex);
950  fetchedMenu->mmi = NULL;
951  }
952  delete menu;
953  if (fetchedEnquiry) {
954  cMutexLock MutexLock(fetchedEnquiry->mutex);
955  fetchedEnquiry->mmi = NULL;
956  }
957  delete enquiry;
958 }
959 
960 char *cCiMMI::GetText(int &Length, const uint8_t **Data)
964 {
965  int Tag = GetTag(Length, Data);
966  if (Tag == AOT_TEXT_LAST) {
967  char *s = GetString(Length, Data);
968  dbgprotocol("Slot %d: <== Text Last (%d) '%s'\n", Tc()->CamSlot()->SlotNumber(), SessionId(), s);
969  return s;
970  }
971  else
972  esyslog("ERROR: CAM %d: MMI: unexpected text tag: %06X", Tc()->CamSlot()->SlotNumber(), Tag);
973  return NULL;
974 }
975 
976 void cCiMMI::Process(int Length, const uint8_t *Data)
977 {
978  if (Data) {
979  int Tag = GetTag(Length, &Data);
980  switch (Tag) {
981  case AOT_DISPLAY_CONTROL: {
982  dbgprotocol("Slot %d: <== Display Control (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
983  int l = 0;
984  const uint8_t *d = GetData(Data, l);
985  if (l > 0) {
986  switch (*d) {
987  case DCC_SET_MMI_MODE:
988  if (l == 2 && *++d == MM_HIGH_LEVEL) {
989  struct tDisplayReply { uint8_t id; uint8_t mode; };
990  tDisplayReply dr = { id : DRI_MMI_MODE_ACK, mode : MM_HIGH_LEVEL };
991  dbgprotocol("Slot %d: ==> Display Reply (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
992  SendData(AOT_DISPLAY_REPLY, 2, (uint8_t *)&dr);
993  }
994  break;
995  default: esyslog("ERROR: CAM %d: MMI: unsupported display control command %02X", Tc()->CamSlot()->SlotNumber(), *d);
996  }
997  }
998  }
999  break;
1000  case AOT_LIST_LAST:
1001  case AOT_MENU_LAST: {
1002  dbgprotocol("Slot %d: <== Menu Last (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
1003  delete menu;
1004  menu = new cCiMenu(this, Tag == AOT_MENU_LAST);
1005  int l = 0;
1006  const uint8_t *d = GetData(Data, l);
1007  if (l > 0) {
1008  // since the specification allows choiceNb to be undefined it is useless, so let's just skip it:
1009  d++;
1010  l--;
1011  if (l > 0) menu->titleText = GetText(l, &d);
1012  if (l > 0) menu->subTitleText = GetText(l, &d);
1013  if (l > 0) menu->bottomText = GetText(l, &d);
1014  while (l > 0) {
1015  char *s = GetText(l, &d);
1016  if (s) {
1017  if (!menu->AddEntry(s))
1018  free(s);
1019  }
1020  else
1021  break;
1022  }
1023  }
1024  }
1025  break;
1026  case AOT_ENQ: {
1027  dbgprotocol("Slot %d: <== Enq (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
1028  delete enquiry;
1029  enquiry = new cCiEnquiry(this);
1030  int l = 0;
1031  const uint8_t *d = GetData(Data, l);
1032  if (l > 0) {
1033  uint8_t blind = *d++;
1034  //XXX GetByte()???
1035  l--;
1036  enquiry->blind = blind & EF_BLIND;
1037  enquiry->expectedLength = *d++;
1038  l--;
1039  // I really wonder why there is no text length field here...
1040  enquiry->text = CopyString(l, d);
1041  }
1042  }
1043  break;
1044  case AOT_CLOSE_MMI: {
1045  int id = -1;
1046  int delay = -1;
1047  int l = 0;
1048  const uint8_t *d = GetData(Data, l);
1049  if (l > 0) {
1050  id = *d++;
1051  if (l > 1)
1052  delay = *d;
1053  }
1054  dbgprotocol("Slot %d: <== Close MMI (%d) id = %02X delay = %d\n", Tc()->CamSlot()->SlotNumber(), SessionId(), id, delay);
1055  }
1056  break;
1057  default: esyslog("ERROR: CAM %d: MMI: unknown tag %06X", Tc()->CamSlot()->SlotNumber(), Tag);
1058  }
1059  }
1060 }
1061 
1062 cCiMenu *cCiMMI::Menu(bool Clear)
1063 {
1064  if (Clear)
1065  fetchedMenu = NULL;
1066  else if (menu) {
1067  fetchedMenu = menu;
1068  menu = NULL;
1069  }
1070  return fetchedMenu;
1071 }
1072 
1074 {
1075  if (Clear)
1076  fetchedEnquiry = NULL;
1077  else if (enquiry) {
1079  enquiry = NULL;
1080  }
1081  return fetchedEnquiry;
1082 }
1083 
1084 void cCiMMI::SendMenuAnswer(uint8_t Selection)
1085 {
1086  dbgprotocol("Slot %d: ==> Menu Answ (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
1087  SendData(AOT_MENU_ANSW, 1, &Selection);
1088 }
1089 
1090 bool cCiMMI::SendAnswer(const char *Text)
1091 {
1092  dbgprotocol("Slot %d: ==> Answ (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
1093  struct tAnswer { uint8_t id; char text[256]; };//XXX
1094  tAnswer answer;
1095  answer.id = Text ? AI_ANSWER : AI_CANCEL;
1096  if (Text)
1097  strncpy(answer.text, Text, sizeof(answer.text));
1098  SendData(AOT_ANSW, Text ? strlen(Text) + 1 : 1, (uint8_t *)&answer);
1099  return true;
1100 }
1101 
1103 {
1104  dbgprotocol("Slot %d: ==> Close MMI (%d)\n", Tc()->CamSlot()->SlotNumber(), SessionId());
1105  SendData(AOT_CLOSE_MMI, 0);
1106  return true;
1107 }
1108 
1109 // --- cCiMenu ---------------------------------------------------------------
1110 
1111 cCiMenu::cCiMenu(cCiMMI *MMI, bool Selectable)
1112 {
1113  mmi = MMI;
1114  mutex = NULL;
1116  titleText = subTitleText = bottomText = NULL;
1117  numEntries = 0;
1118 }
1119 
1121 {
1122  cMutexLock MutexLock(mutex);
1123  if (mmi)
1124  mmi->Menu(true);
1125  free(titleText);
1126  free(subTitleText);
1127  free(bottomText);
1128  for (int i = 0; i < numEntries; i++)
1129  free(entries[i]);
1130 }
1131 
1132 bool cCiMenu::AddEntry(char *s)
1133 {
1135  entries[numEntries++] = s;
1136  return true;
1137  }
1138  return false;
1139 }
1140 
1142 {
1143  // If the mmi is gone, the menu shall be closed, which also qualifies as 'update'.
1144  return !mmi || mmi->HasUserIO();
1145 }
1146 
1147 void cCiMenu::Select(int Index)
1148 {
1149  cMutexLock MutexLock(mutex);
1150  if (mmi && -1 <= Index && Index < numEntries)
1151  mmi->SendMenuAnswer(Index + 1);
1152 }
1153 
1155 {
1156  Select(-1);
1157 }
1158 
1159 void cCiMenu::Abort(void)
1160 {
1161  cMutexLock MutexLock(mutex);
1162  if (mmi)
1163  mmi->SendCloseMMI();
1164 }
1165 
1166 // --- cCiEnquiry ------------------------------------------------------------
1167 
1169 {
1170  mmi = MMI;
1171  text = NULL;
1172  blind = false;
1173  expectedLength = 0;
1174 }
1175 
1177 {
1178  cMutexLock MutexLock(mutex);
1179  if (mmi)
1180  mmi->Enquiry(true);
1181  free(text);
1182 }
1183 
1184 void cCiEnquiry::Reply(const char *s)
1185 {
1186  cMutexLock MutexLock(mutex);
1187  if (mmi)
1188  mmi->SendAnswer(s);
1189 }
1190 
1192 {
1193  Reply(NULL);
1194 }
1195 
1197 {
1198  cMutexLock MutexLock(mutex);
1199  if (mmi)
1200  mmi->SendCloseMMI();
1201 }
1202 
1203 // --- cCiTransportConnection (cont'd) ---------------------------------------
1204 
1205 #define TC_POLL_TIMEOUT 300 // ms WORKAROUND: TC_POLL_TIMEOUT < 300ms doesn't work with DragonCAM
1206 #define TC_ALIVE_TIMEOUT 2000 // ms after which a transport connection is assumed dead
1207 
1209 {
1210  dbgprotocol("Slot %d: creating connection %d/%d\n", CamSlot->SlotNumber(), CamSlot->SlotIndex(), Tcid);
1211  camSlot = CamSlot;
1212  tcid = Tcid;
1213  state = stIDLE;
1214  createConnectionRequested = false;
1215  deleteConnectionRequested = false;
1216  hasUserIO = false;
1218  for (int i = 0; i <= MAX_SESSIONS_PER_TC; i++) // sessions[0] is not used, but initialized anyway
1219  sessions[i] = NULL;
1220 }
1221 
1223 {
1224  for (int i = 1; i <= MAX_SESSIONS_PER_TC; i++)
1225  delete sessions[i];
1226 }
1227 
1229 {
1231  return cas && cas->Ready();
1232 }
1233 
1235 {
1237  return ai ? ai->GetMenuString() : NULL;
1238 }
1239 
1240 void cCiTransportConnection::SendTPDU(uint8_t Tag, int Length, const uint8_t *Data)
1241 {
1242  cTPDU TPDU(camSlot->SlotIndex(), tcid, Tag, Length, Data);
1243  camSlot->Write(&TPDU);
1245 }
1246 
1247 void cCiTransportConnection::SendData(int Length, const uint8_t *Data)
1248 {
1249  // if Length ever exceeds MAX_TPDU_DATA this needs to be handled differently
1250  if (state == stACTIVE && Length > 0)
1251  SendTPDU(T_DATA_LAST, Length, Data);
1252 }
1253 
1254 void cCiTransportConnection::SendTag(uint8_t Tag, uint16_t SessionId, uint32_t ResourceId, int Status)
1255 {
1256  uint8_t buffer[16];
1257  uint8_t *p = buffer;
1258  *p++ = Tag;
1259  *p++ = 0x00; // will contain length
1260  if (Status >= 0)
1261  *p++ = Status;
1262  if (ResourceId) {
1263  put_unaligned(htonl(ResourceId), (uint32_t *)p);
1264  p += 4;
1265  }
1266  put_unaligned(htons(SessionId), (uint16_t *)p);
1267  p += 2;
1268  buffer[1] = p - buffer - 2; // length
1269  SendData(p - buffer, buffer);
1270 }
1271 
1273 {
1274  bool OldDumpTPDUDataTransfer = DumpTPDUDataTransfer;
1276  if (DumpPolls)
1277  dbgprotocol("Slot %d: ==> Poll\n", camSlot->SlotNumber());
1279  DumpTPDUDataTransfer = OldDumpTPDUDataTransfer;
1280 }
1281 
1282 uint32_t cCiTransportConnection::ResourceIdToInt(const uint8_t *Data)
1283 {
1284  return (ntohl(get_unaligned((uint32_t *)Data)));
1285 }
1286 
1288 {
1289  return (SessionId <= MAX_SESSIONS_PER_TC) ? sessions[SessionId] : NULL;
1290 }
1291 
1293 {
1294  for (int i = 1; i <= MAX_SESSIONS_PER_TC; i++) {
1295  if (sessions[i] && sessions[i]->ResourceId() == ResourceId)
1296  return sessions[i];
1297  }
1298  return NULL;
1299 }
1300 
1301 void cCiTransportConnection::OpenSession(int Length, const uint8_t *Data)
1302 {
1303  if (Length == 6 && *(Data + 1) == 0x04) {
1304  uint32_t ResourceId = ResourceIdToInt(Data + 2);
1305  dbgprotocol("Slot %d: open session %08X\n", camSlot->SlotNumber(), ResourceId);
1306  if (!GetSessionByResourceId(ResourceId)) {
1307  for (int i = 1; i <= MAX_SESSIONS_PER_TC; i++) {
1308  if (!sessions[i]) {
1309  switch (ResourceId) {
1310  case RI_RESOURCE_MANAGER: sessions[i] = new cCiResourceManager(i, this); break;
1311  case RI_APPLICATION_INFORMATION: sessions[i] = new cCiApplicationInformation(i, this); break;
1313  case RI_DATE_TIME: sessions[i] = new cCiDateTime(i, this); break;
1314  case RI_MMI: sessions[i] = new cCiMMI(i, this); break;
1315  case RI_HOST_CONTROL: // not implemented
1316  default: esyslog("ERROR: CAM %d: unknown resource identifier: %08X (%d/%d)", camSlot->SlotNumber(), ResourceId, camSlot->SlotIndex(), tcid);
1317  }
1318  if (sessions[i])
1319  SendTag(ST_OPEN_SESSION_RESPONSE, sessions[i]->SessionId(), sessions[i]->ResourceId(), SS_OK);
1320  return;
1321  }
1322  }
1323  esyslog("ERROR: CAM %d: no free session slot for resource identifier %08X (%d/%d)", camSlot->SlotNumber(), ResourceId, camSlot->SlotIndex(), tcid);
1324  }
1325  else
1326  esyslog("ERROR: CAM %d: session for resource identifier %08X already exists (%d/%d)", camSlot->SlotNumber(), ResourceId, camSlot->SlotIndex(), tcid);
1327  }
1328 }
1329 
1331 {
1332  dbgprotocol("Slot %d: close session %d\n", camSlot->SlotNumber(), SessionId);
1333  cCiSession *Session = GetSessionBySessionId(SessionId);
1334  if (Session && sessions[SessionId] == Session) {
1335  delete Session;
1336  sessions[SessionId] = NULL;
1337  SendTag(ST_CLOSE_SESSION_RESPONSE, SessionId, 0, SS_OK);
1338  }
1339  else {
1340  esyslog("ERROR: CAM %d: unknown session id: %d (%d/%d)", camSlot->SlotNumber(), SessionId, camSlot->SlotIndex(), tcid);
1342  }
1343 }
1344 
1346 {
1347  int Length;
1348  const uint8_t *Data = TPDU->Data(Length);
1349  if (Data && Length > 1) {
1350  switch (*Data) {
1351  case ST_SESSION_NUMBER: if (Length > 4) {
1352  uint16_t SessionId = ntohs(get_unaligned((uint16_t *)&Data[2]));
1353  cCiSession *Session = GetSessionBySessionId(SessionId);
1354  if (Session)
1355  Session->Process(Length - 4, Data + 4);
1356  else
1357  esyslog("ERROR: CAM %d: unknown session id: %d (%d/%d)", camSlot->SlotNumber(), SessionId, camSlot->SlotIndex(), tcid);
1358  }
1359  break;
1360  case ST_OPEN_SESSION_REQUEST: OpenSession(Length, Data);
1361  break;
1362  case ST_CLOSE_SESSION_REQUEST: if (Length == 4)
1363  CloseSession(ntohs(get_unaligned((uint16_t *)&Data[2])));
1364  break;
1365  case ST_CREATE_SESSION_RESPONSE: // not implemented
1366  case ST_CLOSE_SESSION_RESPONSE: // not implemented
1367  default: esyslog("ERROR: CAM %d: unknown session tag: %02X (%d/%d)", camSlot->SlotNumber(), *Data, camSlot->SlotIndex(), tcid);
1368  }
1369  }
1370 }
1371 
1373 {
1374  if (TPDU)
1376  else if (alive.TimedOut())
1377  return false;
1378  switch (state) {
1379  case stIDLE:
1381  dbgprotocol("Slot %d: create connection %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1382  createConnectionRequested = false;
1384  state = stCREATION;
1385  }
1386  return true;
1387  case stCREATION:
1388  if (TPDU && TPDU->Tag() == T_CTC_REPLY) {
1389  dbgprotocol("Slot %d: connection created %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1390  Poll();
1391  state = stACTIVE;
1392  }
1393  else if (timer.TimedOut()) {
1394  dbgprotocol("Slot %d: timeout while creating connection %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1395  state = stIDLE;
1396  }
1397  return true;
1398  case stACTIVE:
1400  dbgprotocol("Slot %d: delete connection requested %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1401  deleteConnectionRequested = false;
1403  state = stDELETION;
1404  return true;
1405  }
1406  if (TPDU) {
1407  switch (TPDU->Tag()) {
1408  case T_REQUEST_TC:
1409  esyslog("ERROR: CAM %d: T_REQUEST_TC not implemented (%d/%d)", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1410  break;
1411  case T_DATA_MORE:
1412  case T_DATA_LAST:
1413  HandleSessions(TPDU);
1414  // continue with T_SB
1415  case T_SB:
1416  if ((TPDU->Status() & DATA_INDICATOR) != 0) {
1417  dbgprotocol("Slot %d: receive data %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1418  SendTPDU(T_RCV);
1419  }
1420  break;
1421  case T_DELETE_TC:
1422  dbgprotocol("Slot %d: delete connection %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1424  state = stIDLE;
1425  return true;
1426  case T_RCV:
1427  case T_CREATE_TC:
1428  case T_CTC_REPLY:
1429  case T_DTC_REPLY:
1430  case T_NEW_TC:
1431  case T_TC_ERROR:
1432  break;
1433  default:
1434  esyslog("ERROR: unknown TPDU tag: 0x%02X (%s)", TPDU->Tag(), __FUNCTION__);
1435  }
1436  }
1437  else if (timer.TimedOut())
1438  Poll();
1439  hasUserIO = false;
1440  for (int i = 1; i <= MAX_SESSIONS_PER_TC; i++) {
1441  if (sessions[i]) {
1442  sessions[i]->Process();
1443  if (sessions[i]->HasUserIO())
1444  hasUserIO = true;
1445  }
1446  }
1447  break;
1448  case stDELETION:
1449  if (TPDU && TPDU->Tag() == T_DTC_REPLY || timer.TimedOut()) {
1450  dbgprotocol("Slot %d: connection deleted %d/%d\n", camSlot->SlotNumber(), camSlot->SlotIndex(), tcid);
1451  state = stIDLE;
1452  }
1453  return true;
1454  default:
1455  esyslog("ERROR: unknown state: %d (%s)", state, __FUNCTION__);
1456  }
1457  return true;
1458 }
1459 
1460 // --- cCiCaPidData ----------------------------------------------------------
1461 
1462 class cCiCaPidData : public cListObject {
1463 public:
1464  bool active;
1465  int pid;
1467  cCiCaPidData(int Pid, int StreamType)
1468  {
1469  active = false;
1470  pid = Pid;
1471  streamType = StreamType;
1472  }
1473  };
1474 
1475 // --- cCiCaProgramData ------------------------------------------------------
1476 
1478 public:
1480  bool modified;
1482  cCiCaProgramData(int ProgramNumber)
1483  {
1484  programNumber = ProgramNumber;
1485  modified = false;
1486  }
1487  };
1488 
1489 // --- cCiAdapter ------------------------------------------------------------
1490 
1492 :cThread("CI adapter")
1493 {
1494  assignedDevice = NULL;
1495  for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++)
1496  camSlots[i] = NULL;
1497 }
1498 
1500 {
1501  Cancel(3);
1502  for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++)
1503  delete camSlots[i];
1504 }
1505 
1507 {
1508  if (CamSlot) {
1509  for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++) {
1510  if (!camSlots[i]) {
1511  CamSlot->slotIndex = i;
1512  camSlots[i] = CamSlot;
1513  return;
1514  }
1515  }
1516  esyslog("ERROR: no free CAM slot in CI adapter");
1517  }
1518 }
1519 
1521 {
1522  for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++) {
1523  if (camSlots[i] && !camSlots[i]->Ready())
1524  return false;
1525  }
1526  return true;
1527 }
1528 
1530 {
1531  cTPDU TPDU;
1532  while (Running()) {
1533  int n = Read(TPDU.Buffer(), TPDU.MaxSize());
1534  if (n > 0 && TPDU.Slot() < MAX_CAM_SLOTS_PER_ADAPTER) {
1535  TPDU.SetSize(n);
1536  cCamSlot *cs = camSlots[TPDU.Slot()];
1537  TPDU.Dump(cs ? cs->SlotNumber() : 0, false);
1538  if (cs)
1539  cs->Process(&TPDU);
1540  }
1541  for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++) {
1542  if (camSlots[i])
1543  camSlots[i]->Process();
1544  }
1545  }
1546 }
1547 
1548 // --- cCamSlot --------------------------------------------------------------
1549 
1551 
1552 #define MODULE_CHECK_INTERVAL 500 // ms
1553 #define MODULE_RESET_TIMEOUT 2 // s
1554 
1556 {
1557  ciAdapter = CiAdapter;
1558  slotIndex = -1;
1559  lastModuleStatus = msReset; // avoids initial reset log message
1560  resetTime = 0;
1561  resendPmt = false;
1562  source = transponder = 0;
1563  for (int i = 0; i <= MAX_CONNECTIONS_PER_CAM_SLOT; i++) // tc[0] is not used, but initialized anyway
1564  tc[i] = NULL;
1565  CamSlots.Add(this);
1566  slotNumber = Index() + 1;
1567  if (ciAdapter)
1568  ciAdapter->AddCamSlot(this);
1569  Reset();
1570 }
1571 
1573 {
1574  CamSlots.Del(this, false);
1576 }
1577 
1578 bool cCamSlot::Assign(cDevice *Device, bool Query)
1579 {
1580  cMutexLock MutexLock(&mutex);
1581  if (ciAdapter) {
1582  if (ciAdapter->Assign(Device, true)) {
1583  if (!Device && ciAdapter->assignedDevice)
1585  if (!Query) {
1586  StopDecrypting();
1587  source = transponder = 0;
1588  if (ciAdapter->Assign(Device)) {
1590  if (Device) {
1591  Device->SetCamSlot(this);
1592  dsyslog("CAM %d: assigned to device %d", slotNumber, Device->DeviceNumber() + 1);
1593  }
1594  else
1595  dsyslog("CAM %d: unassigned", slotNumber);
1596  }
1597  else
1598  return false;
1599  }
1600  return true;
1601  }
1602  }
1603  return false;
1604 }
1605 
1607 {
1608  cMutexLock MutexLock(&mutex);
1609  if (ciAdapter) {
1611  if (d && d->CamSlot() == this)
1612  return d;
1613  }
1614  return NULL;
1615 }
1616 
1618 {
1619  cMutexLock MutexLock(&mutex);
1620  for (int i = 1; i <= MAX_CONNECTIONS_PER_CAM_SLOT; i++) {
1621  if (!tc[i]) {
1622  tc[i] = new cCiTransportConnection(this, i);
1623  tc[i]->CreateConnection();
1624  return;
1625  }
1626  }
1627  esyslog("ERROR: CAM %d: can't create new transport connection!", slotNumber);
1628 }
1629 
1631 {
1632  cMutexLock MutexLock(&mutex);
1633  for (int i = 1; i <= MAX_CONNECTIONS_PER_CAM_SLOT; i++) {
1634  delete tc[i];
1635  tc[i] = NULL;
1636  }
1637 }
1638 
1640 {
1641  cMutexLock MutexLock(&mutex);
1642  if (TPDU) {
1643  int n = TPDU->Tcid();
1644  if (1 <= n && n <= MAX_CONNECTIONS_PER_CAM_SLOT) {
1645  if (tc[n])
1646  tc[n]->Process(TPDU);
1647  }
1648  }
1649  for (int i = 1; i <= MAX_CONNECTIONS_PER_CAM_SLOT; i++) {
1650  if (tc[i]) {
1651  if (!tc[i]->Process()) {
1652  Reset();
1653  return;
1654  }
1655  }
1656  }
1657  if (moduleCheckTimer.TimedOut()) {
1658  eModuleStatus ms = ModuleStatus();
1659  if (ms != lastModuleStatus) {
1660  switch (ms) {
1661  case msNone:
1662  dbgprotocol("Slot %d: no module present\n", slotNumber);
1663  isyslog("CAM %d: no module present", slotNumber);
1665  break;
1666  case msReset:
1667  dbgprotocol("Slot %d: module reset\n", slotNumber);
1668  isyslog("CAM %d: module reset", slotNumber);
1670  break;
1671  case msPresent:
1672  dbgprotocol("Slot %d: module present\n", slotNumber);
1673  isyslog("CAM %d: module present", slotNumber);
1674  break;
1675  case msReady:
1676  dbgprotocol("Slot %d: module ready\n", slotNumber);
1677  isyslog("CAM %d: module ready", slotNumber);
1678  NewConnection();
1679  resendPmt = caProgramList.Count() > 0;
1680  break;
1681  default:
1682  esyslog("ERROR: unknown module status %d (%s)", ms, __FUNCTION__);
1683  }
1684  lastModuleStatus = ms;
1685  }
1687  }
1688  if (resendPmt)
1690  processed.Broadcast();
1691 }
1692 
1694 {
1695  cMutexLock MutexLock(&mutex);
1696  return tc[1] ? tc[1]->GetSessionByResourceId(ResourceId) : NULL;
1697 }
1698 
1700 {
1701  cMutexLock MutexLock(&mutex);
1702  if (ciAdapter && TPDU->Size()) {
1703  TPDU->Dump(SlotNumber(), true);
1704  ciAdapter->Write(TPDU->Buffer(), TPDU->Size());
1705  }
1706 }
1707 
1709 {
1710  cMutexLock MutexLock(&mutex);
1713  if (ciAdapter) {
1714  dbgprotocol("Slot %d: reset...", slotNumber);
1715  if (ciAdapter->Reset(slotIndex)) {
1716  resetTime = time(NULL);
1717  dbgprotocol("ok.\n");
1719  return true;
1720  }
1721  dbgprotocol("failed!\n");
1722  }
1723  return false;
1724 }
1725 
1727 {
1728  cMutexLock MutexLock(&mutex);
1730  if (resetTime) {
1731  if (ms <= msReset) {
1732  if (time(NULL) - resetTime < MODULE_RESET_TIMEOUT)
1733  return msReset;
1734  }
1735  resetTime = 0;
1736  }
1737  return ms;
1738 }
1739 
1740 const char *cCamSlot::GetCamName(void)
1741 {
1742  cMutexLock MutexLock(&mutex);
1743  return tc[1] ? tc[1]->GetCamName() : NULL;
1744 }
1745 
1747 {
1748  cMutexLock MutexLock(&mutex);
1749  return ModuleStatus() == msNone || tc[1] && tc[1]->Ready();
1750 }
1751 
1753 {
1755 }
1756 
1758 {
1759  cMutexLock MutexLock(&mutex);
1760  return tc[1] && tc[1]->HasUserIO();
1761 }
1762 
1764 {
1765  cMutexLock MutexLock(&mutex);
1767  return api ? api->EnterMenu() : false;
1768 }
1769 
1771 {
1772  cMutexLock MutexLock(&mutex);
1774  if (mmi) {
1775  cCiMenu *Menu = mmi->Menu();
1776  if (Menu)
1777  Menu->mutex = &mutex;
1778  return Menu;
1779  }
1780  return NULL;
1781 }
1782 
1784 {
1785  cMutexLock MutexLock(&mutex);
1787  if (mmi) {
1788  cCiEnquiry *Enquiry = mmi->Enquiry();
1789  if (Enquiry)
1790  Enquiry->mutex = &mutex;
1791  return Enquiry;
1792  }
1793  return NULL;
1794 }
1795 
1796 void cCamSlot::SendCaPmt(uint8_t CmdId)
1797 {
1798  cMutexLock MutexLock(&mutex);
1800  if (cas) {
1801  const int *CaSystemIds = cas->GetCaSystemIds();
1802  if (CaSystemIds && *CaSystemIds) {
1803  if (caProgramList.Count()) {
1804  for (int Loop = 1; Loop <= 2; Loop++) {
1805  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
1806  if (p->modified || resendPmt) {
1807  bool Active = false;
1808  cCiCaPmt CaPmt(CmdId, source, transponder, p->programNumber, CaSystemIds);
1809  for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
1810  if (q->active) {
1811  CaPmt.AddPid(q->pid, q->streamType);
1812  Active = true;
1813  }
1814  }
1815  if ((Loop == 1) != Active) { // first remove, then add
1816  if (cas->RepliesToQuery())
1817  CaPmt.SetListManagement(Active ? CPLM_ADD : CPLM_UPDATE);
1818  if (Active || cas->RepliesToQuery())
1819  cas->SendPMT(&CaPmt);
1820  p->modified = false;
1821  }
1822  }
1823  }
1824  }
1825  resendPmt = false;
1826  }
1827  else {
1828  cCiCaPmt CaPmt(CmdId, 0, 0, 0, NULL);
1829  cas->SendPMT(&CaPmt);
1830  }
1831  }
1832  }
1833 }
1834 
1836 {
1837  cMutexLock MutexLock(&mutex);
1839  return cas ? cas->GetCaSystemIds() : NULL;
1840 }
1841 
1843 {
1844  cDevice *d = Device();
1845  return d ? d->Priority() : IDLEPRIORITY;
1846 }
1847 
1848 bool cCamSlot::ProvidesCa(const int *CaSystemIds)
1849 {
1850  cMutexLock MutexLock(&mutex);
1852  if (cas) {
1853  for (const int *ids = cas->GetCaSystemIds(); ids && *ids; ids++) {
1854  for (const int *id = CaSystemIds; *id; id++) {
1855  if (*id == *ids)
1856  return true;
1857  }
1858  }
1859  }
1860  return false;
1861 }
1862 
1863 void cCamSlot::AddPid(int ProgramNumber, int Pid, int StreamType)
1864 {
1865  cMutexLock MutexLock(&mutex);
1866  cCiCaProgramData *ProgramData = NULL;
1867  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
1868  if (p->programNumber == ProgramNumber) {
1869  ProgramData = p;
1870  for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
1871  if (q->pid == Pid)
1872  return;
1873  }
1874  }
1875  }
1876  if (!ProgramData)
1877  caProgramList.Add(ProgramData = new cCiCaProgramData(ProgramNumber));
1878  ProgramData->pidList.Add(new cCiCaPidData(Pid, StreamType));
1879 }
1880 
1881 void cCamSlot::SetPid(int Pid, bool Active)
1882 {
1883  cMutexLock MutexLock(&mutex);
1884  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
1885  for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
1886  if (q->pid == Pid) {
1887  if (q->active != Active) {
1888  q->active = Active;
1889  p->modified = true;
1890  }
1891  return;
1892  }
1893  }
1894  }
1895 }
1896 
1897 // see ISO/IEC 13818-1
1898 #define STREAM_TYPE_VIDEO 0x02
1899 #define STREAM_TYPE_AUDIO 0x04
1900 #define STREAM_TYPE_PRIVATE 0x06
1901 
1902 void cCamSlot::AddChannel(const cChannel *Channel)
1903 {
1904  cMutexLock MutexLock(&mutex);
1905  if (source != Channel->Source() || transponder != Channel->Transponder())
1906  StopDecrypting();
1907  source = Channel->Source();
1908  transponder = Channel->Transponder();
1909  if (Channel->Ca() >= CA_ENCRYPTED_MIN) {
1910  AddPid(Channel->Sid(), Channel->Vpid(), STREAM_TYPE_VIDEO);
1911  for (const int *Apid = Channel->Apids(); *Apid; Apid++)
1912  AddPid(Channel->Sid(), *Apid, STREAM_TYPE_AUDIO);
1913  for (const int *Dpid = Channel->Dpids(); *Dpid; Dpid++)
1914  AddPid(Channel->Sid(), *Dpid, STREAM_TYPE_PRIVATE);
1915  for (const int *Spid = Channel->Spids(); *Spid; Spid++)
1916  AddPid(Channel->Sid(), *Spid, STREAM_TYPE_PRIVATE);
1917  if (Channel->Tpid() && Setup.SupportTeletext)
1918  AddPid(Channel->Sid(), Channel->Tpid(), STREAM_TYPE_PRIVATE);
1919  }
1920 }
1921 
1922 #define QUERY_REPLY_WAIT 100 // ms to wait between checks for a reply
1923 
1924 bool cCamSlot::CanDecrypt(const cChannel *Channel)
1925 {
1926  if (Channel->Ca() < CA_ENCRYPTED_MIN)
1927  return true; // channel not encrypted
1928  if (!IsDecrypting())
1929  return true; // any CAM can decrypt at least one channel
1930  cMutexLock MutexLock(&mutex);
1932  if (cas && cas->RepliesToQuery()) {
1933  cCiCaPmt CaPmt(CPCI_QUERY, Channel->Source(), Channel->Transponder(), Channel->Sid(), GetCaSystemIds());
1934  CaPmt.SetListManagement(CPLM_ADD); // WORKAROUND: CPLM_ONLY doesn't work with Alphacrypt 3.09 (deletes existing CA_PMTs)
1935  CaPmt.AddPid(Channel->Vpid(), STREAM_TYPE_VIDEO);
1936  for (const int *Apid = Channel->Apids(); *Apid; Apid++)
1937  CaPmt.AddPid(*Apid, STREAM_TYPE_AUDIO);
1938  for (const int *Dpid = Channel->Dpids(); *Dpid; Dpid++)
1939  CaPmt.AddPid(*Dpid, STREAM_TYPE_PRIVATE);
1940  for (const int *Spid = Channel->Spids(); *Spid; Spid++)
1941  CaPmt.AddPid(*Spid, STREAM_TYPE_PRIVATE);
1942  if (Channel->Tpid() && Setup.SupportTeletext) {
1943  CaPmt.AddPid(Channel->Tpid(), STREAM_TYPE_PRIVATE);
1944  }
1945  cas->SendPMT(&CaPmt);
1946  cTimeMs Timeout(QUERY_REPLY_TIMEOUT);
1947  do {
1949  if ((cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT)) != NULL) { // must re-fetch it, there might have been a reset
1950  if (cas->ReceivedReply())
1951  return cas->CanDecrypt();
1952  }
1953  else
1954  return false;
1955  } while (!Timeout.TimedOut());
1956  dsyslog("CAM %d: didn't reply to QUERY", SlotNumber());
1957  }
1958  return false;
1959 }
1960 
1962 {
1964 }
1965 
1967 {
1968  cMutexLock MutexLock(&mutex);
1969  if (caProgramList.Count()) {
1970  caProgramList.Clear();
1972  }
1973 }
1974 
1976 {
1977  cMutexLock MutexLock(&mutex);
1978  if (caProgramList.Count()) {
1979  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
1980  if (p->modified)
1981  return true; // any modifications need to be processed before we can assume it's no longer decrypting
1982  for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
1983  if (q->active)
1984  return true;
1985  }
1986  }
1987  }
1988  return false;
1989 }
1990 
1991 // --- cChannelCamRelation ---------------------------------------------------
1992 
1993 #define CAM_CHECKED_TIMEOUT 15 // seconds before a CAM that has been checked for a particular channel will be checked again
1994 
1996 private:
2000  time_t lastChecked;
2001 public:
2003  bool TimedOut(void);
2004  tChannelID ChannelID(void) { return channelID; }
2005  bool CamChecked(int CamSlotNumber);
2006  bool CamDecrypt(int CamSlotNumber);
2007  void SetChecked(int CamSlotNumber);
2008  void SetDecrypt(int CamSlotNumber);
2009  void ClrChecked(int CamSlotNumber);
2010  void ClrDecrypt(int CamSlotNumber);
2011  };
2012 
2014 {
2015  channelID = ChannelID;
2016  camSlotsChecked = 0;
2017  camSlotsDecrypt = 0;
2018  lastChecked = 0;
2019 }
2020 
2022 {
2023  return !camSlotsDecrypt && time(NULL) - lastChecked > CAM_CHECKED_TIMEOUT;
2024 }
2025 
2026 bool cChannelCamRelation::CamChecked(int CamSlotNumber)
2027 {
2028  if (lastChecked && time(NULL) - lastChecked > CAM_CHECKED_TIMEOUT) {
2029  lastChecked = 0;
2030  camSlotsChecked = 0;
2031  }
2032  return camSlotsChecked & (1 << (CamSlotNumber - 1));
2033 }
2034 
2035 bool cChannelCamRelation::CamDecrypt(int CamSlotNumber)
2036 {
2037  return camSlotsDecrypt & (1 << (CamSlotNumber - 1));
2038 }
2039 
2040 void cChannelCamRelation::SetChecked(int CamSlotNumber)
2041 {
2042  camSlotsChecked |= (1 << (CamSlotNumber - 1));
2043  lastChecked = time(NULL);
2044  ClrDecrypt(CamSlotNumber);
2045 }
2046 
2047 void cChannelCamRelation::SetDecrypt(int CamSlotNumber)
2048 {
2049  camSlotsDecrypt |= (1 << (CamSlotNumber - 1));
2050  ClrChecked(CamSlotNumber);
2051 }
2052 
2053 void cChannelCamRelation::ClrChecked(int CamSlotNumber)
2054 {
2055  camSlotsChecked &= ~(1 << (CamSlotNumber - 1));
2056  lastChecked = 0;
2057 }
2058 
2059 void cChannelCamRelation::ClrDecrypt(int CamSlotNumber)
2060 {
2061  camSlotsDecrypt &= ~(1 << (CamSlotNumber - 1));
2062 }
2063 
2064 // --- cChannelCamRelations --------------------------------------------------
2065 
2066 #define CHANNEL_CAM_RELATIONS_CLEANUP_INTERVAL 3600 // seconds between cleanups
2067 
2069 
2071 {
2072  lastCleanup = time(NULL);
2073 }
2074 
2076 {
2077  cMutexLock MutexLock(&mutex);
2079  for (cChannelCamRelation *ccr = First(); ccr; ) {
2080  cChannelCamRelation *c = ccr;
2081  ccr = Next(ccr);
2082  if (c->TimedOut())
2083  Del(c);
2084  }
2085  lastCleanup = time(NULL);
2086  }
2087 }
2088 
2090 {
2091  cMutexLock MutexLock(&mutex);
2092  Cleanup();
2093  for (cChannelCamRelation *ccr = First(); ccr; ccr = Next(ccr)) {
2094  if (ccr->ChannelID() == ChannelID)
2095  return ccr;
2096  }
2097  return NULL;
2098 }
2099 
2101 {
2102  cMutexLock MutexLock(&mutex);
2103  cChannelCamRelation *ccr = GetEntry(ChannelID);
2104  if (!ccr)
2105  Add(ccr = new cChannelCamRelation(ChannelID));
2106  return ccr;
2107 }
2108 
2109 void cChannelCamRelations::Reset(int CamSlotNumber)
2110 {
2111  cMutexLock MutexLock(&mutex);
2112  for (cChannelCamRelation *ccr = First(); ccr; ccr = Next(ccr)) {
2113  ccr->ClrChecked(CamSlotNumber);
2114  ccr->ClrDecrypt(CamSlotNumber);
2115  }
2116 }
2117 
2118 bool cChannelCamRelations::CamChecked(tChannelID ChannelID, int CamSlotNumber)
2119 {
2120  cMutexLock MutexLock(&mutex);
2121  cChannelCamRelation *ccr = GetEntry(ChannelID);
2122  return ccr ? ccr->CamChecked(CamSlotNumber) : false;
2123 }
2124 
2125 bool cChannelCamRelations::CamDecrypt(tChannelID ChannelID, int CamSlotNumber)
2126 {
2127  cMutexLock MutexLock(&mutex);
2128  cChannelCamRelation *ccr = GetEntry(ChannelID);
2129  return ccr ? ccr->CamDecrypt(CamSlotNumber) : false;
2130 }
2131 
2132 void cChannelCamRelations::SetChecked(tChannelID ChannelID, int CamSlotNumber)
2133 {
2134  cMutexLock MutexLock(&mutex);
2135  cChannelCamRelation *ccr = AddEntry(ChannelID);
2136  if (ccr)
2137  ccr->SetChecked(CamSlotNumber);
2138 }
2139 
2140 void cChannelCamRelations::SetDecrypt(tChannelID ChannelID, int CamSlotNumber)
2141 {
2142  cMutexLock MutexLock(&mutex);
2143  cChannelCamRelation *ccr = AddEntry(ChannelID);
2144  if (ccr)
2145  ccr->SetDecrypt(CamSlotNumber);
2146 }
2147 
2148 void cChannelCamRelations::ClrChecked(tChannelID ChannelID, int CamSlotNumber)
2149 {
2150  cMutexLock MutexLock(&mutex);
2151  cChannelCamRelation *ccr = GetEntry(ChannelID);
2152  if (ccr)
2153  ccr->ClrChecked(CamSlotNumber);
2154 }
2155 
2156 void cChannelCamRelations::ClrDecrypt(tChannelID ChannelID, int CamSlotNumber)
2157 {
2158  cMutexLock MutexLock(&mutex);
2159  cChannelCamRelation *ccr = GetEntry(ChannelID);
2160  if (ccr)
2161  ccr->ClrDecrypt(CamSlotNumber);
2162 }