Implemented handling of the "CA PMT Reply" for CAMs; some preparations for being able to record several encrypted channels from the same transponder

CONTRIBUTORS

@@ -1249,6 +1249,7 @@ Marco Schl
  for fixing a race condition in the SPU decoder
  for fixing initializing the day index when editing the weekday parameter of a
  repeating timer
+ for figuring out some obscure length bytes the the CA PMT Reply data of AlphaCrypt CAMs
 
 Jürgen Schmitz <j.schmitz@web.de>
  for reporting a bug in displaying the current channel when switching via the SVDRP

HISTORY

@@ -3934,7 +3934,7 @@ Video Disk Recorder Revision History
   layers of subdirectories.
 - Removed EPG bugfix #0, because it removed actually important data.
 
-2005-11-11: Version 1.3.37
+2005-11-26: Version 1.3.37
 
 - Added compiler options "-fPIC -g" to all plugins (thanks to Rolf Ahrenberg).
 - Fixed initializing the day index when editing the weekday parameter of a
@@ -3946,3 +3946,10 @@ Video Disk Recorder Revision History
   to Werner Fink). Live DD mode requires a full featured DVB card and a
   LinuxDVB driver with firmware version 0x2622 or higher. Older versions will
   use Transfer Mode just like before.
+- Implemented handling of the "CA PMT Reply" for CAMs (thanks to Marco
+  Schlüßler for figuring out some obscure length bytes in the CA PMT Reply
+  data of AlphaCrypt CAMs).
+- Some preparations for being able to record several encrypted channels from
+  the same transponder at the same time (or record and view different encrypted
+  channels), provided the CAM in use can handle this. This is work in progress
+  and isn't actively used, yet.

ci.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ci.c 1.39 2005/11/04 14:18:52 kls Exp $
+ * $Id: ci.c 1.40 2005/11/26 13:36:51 kls Exp $
  */
 
 #include "ci.h"
@@ -845,10 +845,118 @@ bool cCiApplicationInformation::EnterMenu(void)
   return false;
 }
 
+// --- cCiCaPmt --------------------------------------------------------------
+
+// Ca Pmt List Management:
+
+#define CPLM_MORE    0x00
+#define CPLM_FIRST   0x01
+#define CPLM_LAST    0x02
+#define CPLM_ONLY    0x03
+#define CPLM_ADD     0x04
+#define CPLM_UPDATE  0x05
+
+// Ca Pmt Cmd Ids:
+
+#define CPCI_OK_DESCRAMBLING  0x01
+#define CPCI_OK_MMI           0x02
+#define CPCI_QUERY            0x03
+#define CPCI_NOT_SELECTED     0x04
+
+class cCiCaPmt : public cListObject {
+  friend class cCiConditionalAccessSupport;
+private:
+  uint8_t cmdId;
+  int length;
+  int esInfoLengthPos;
+  uint8_t capmt[2048]; ///< XXX is there a specified maximum?
+  int caDescriptorsLength;
+  uint8_t caDescriptors[2048];
+  bool streamFlag;
+  void AddCaDescriptors(int Length, const uint8_t *Data);
+public:
+  cCiCaPmt(uint8_t CmdId, int Source, int Transponder, int ProgramNumber, const unsigned short *CaSystemIds);
+  void SetListManagement(uint8_t ListManagement);
+  bool Valid(void);
+  void AddPid(int Pid, uint8_t StreamType);
+  };
+
+cCiCaPmt::cCiCaPmt(uint8_t CmdId, int Source, int Transponder, int ProgramNumber, const unsigned short *CaSystemIds)
+{
+  cmdId = CmdId;
+  caDescriptorsLength = GetCaDescriptors(Source, Transponder, ProgramNumber, CaSystemIds, sizeof(caDescriptors), caDescriptors, streamFlag);
+  length = 0;
+  capmt[length++] = CPLM_ONLY;
+  capmt[length++] = (ProgramNumber >> 8) & 0xFF;
+  capmt[length++] =  ProgramNumber       & 0xFF;
+  capmt[length++] = 0x01; // version_number, current_next_indicator - apparently vn doesn't matter, but cni must be 1
+  esInfoLengthPos = length;
+  capmt[length++] = 0x00; // program_info_length H (at program level)
+  capmt[length++] = 0x00; // program_info_length L
+  if (!streamFlag)
+     AddCaDescriptors(caDescriptorsLength, caDescriptors);
+}
+
+void cCiCaPmt::SetListManagement(uint8_t ListManagement)
+{
+  capmt[0] = ListManagement;
+}
+
+bool cCiCaPmt::Valid(void)
+{
+  return caDescriptorsLength > 0;
+}
+
+void cCiCaPmt::AddPid(int Pid, uint8_t StreamType)
+{
+  if (Pid) {
+     //XXX buffer overflow check???
+     capmt[length++] = StreamType;
+     capmt[length++] = (Pid >> 8) & 0xFF;
+     capmt[length++] =  Pid       & 0xFF;
+     esInfoLengthPos = length;
+     capmt[length++] = 0x00; // ES_info_length H (at ES level)
+     capmt[length++] = 0x00; // ES_info_length L
+     if (streamFlag)
+        AddCaDescriptors(caDescriptorsLength, caDescriptors);
+     }
+}
+
+void cCiCaPmt::AddCaDescriptors(int Length, const uint8_t *Data)
+{
+  if (esInfoLengthPos) {
+     if (length + Length < int(sizeof(capmt))) {
+        capmt[length++] = cmdId;
+        memcpy(capmt + length, Data, Length);
+        length += Length;
+        int l = length - esInfoLengthPos - 2;
+        capmt[esInfoLengthPos]     = (l >> 8) & 0xFF;
+        capmt[esInfoLengthPos + 1] =  l       & 0xFF;
+        }
+     else
+        esyslog("ERROR: buffer overflow in CA descriptor");
+     esInfoLengthPos = 0;
+     }
+  else
+     esyslog("ERROR: adding CA descriptor without Pid!");
+}
+
 // --- cCiConditionalAccessSupport -------------------------------------------
 
 #define MAXCASYSTEMIDS 16
 
+// CA Enable Ids:
+
+#define CAEI_POSSIBLE                  0x01
+#define CAEI_POSSIBLE_COND_PURCHASE    0x02
+#define CAEI_POSSIBLE_COND_TECHNICAL   0x03
+#define CAEI_NOT_POSSIBLE_ENTITLEMENT  0x71
+#define CAEI_NOT_POSSIBLE_TECHNICAL    0x73
+
+#define CA_ENABLE_FLAG                 0x80
+
+#define CA_ENABLE(x) (((x) & CA_ENABLE_FLAG) ? (x) & ~CA_ENABLE_FLAG : 0)
+
 class cCiConditionalAccessSupport : public cCiSession {
 private:
   int state;
@@ -858,14 +966,15 @@ public:
   cCiConditionalAccessSupport(int SessionId, cCiTransportConnection *Tc);
   virtual bool Process(int Length = 0, const uint8_t *Data = NULL);
   const unsigned short *GetCaSystemIds(void) { return caSystemIds; }
-  bool SendPMT(cCiCaPmt &CaPmt);
+  bool SendPMT(cCiCaPmt *CaPmt);
+  bool ReceivedReply(bool CanDescramble = false);
   };
 
 cCiConditionalAccessSupport::cCiConditionalAccessSupport(int SessionId, cCiTransportConnection *Tc)
 :cCiSession(SessionId, RI_CONDITIONAL_ACCESS_SUPPORT, Tc)
 {
   dbgprotocol("New Conditional Access Support (session id %d)\n", SessionId);
-  state = 0;
+  state = 0; // inactive
   caSystemIds[numCaSystemIds = 0] = 0;
 }
 
@@ -892,7 +1001,58 @@ bool cCiConditionalAccessSupport::Process(int Length, const uint8_t *Data)
                   }
             dbgprotocol("\n");
             }
-            state = 2;
+            state = 2; // got ca info
+            break;
+       case AOT_CA_PMT_REPLY: {
+            dbgprotocol("%d: <== Ca Pmt Reply", SessionId());
+            state = 4; // got ca pmt reply
+            int l = 0;
+            const uint8_t *d = GetData(Data, l);
+            if (l > 1) {
+               unsigned short pnr = ((unsigned short)(*d) << 8) | *(d + 1);
+               dbgprotocol(" %d", pnr);
+               d += 2;
+               l -= 2;
+               if (l > 0) {
+                  dbgprotocol(" %02X", *d);
+                  d += 1;
+                  l -= 1;
+                  if (l > 0) {
+                     if (l % 3 == 0 && l > 1) {
+                        // The EN50221 standard defines that the next byte is supposed
+                        // to be the CA_enable value at programme level. However, there are
+                        // CAMs (for instance the AlphaCrypt with firmware <= 3.05) that
+                        // insert a two byte length field here.
+                        // This is a workaround to skip this length field:
+                        unsigned short len = ((unsigned short)(*d) << 8) | *(d + 1);
+                        if (len == l - 2) {
+                           d += 2;
+                           l -= 2;
+                           }
+                        }
+                     unsigned char caepl = *d;
+                     dbgprotocol(" %02X", caepl);
+                     d += 1;
+                     l -= 1;
+                     bool ok = true;
+                     if (l <= 2)
+                        ok = CA_ENABLE(caepl) == CAEI_POSSIBLE;
+                     while (l > 2) {
+                           unsigned short pid = ((unsigned short)(*d) << 8) | *(d + 1);
+                           unsigned char caees = *(d + 2);
+                           dbgprotocol(" %d=%02X", pid, caees);
+                           d += 3;
+                           l -= 3;
+                           if (CA_ENABLE(caees) != CAEI_POSSIBLE)
+                              ok = false;
+                           }
+                     if (ok)
+                        state = 5; // descrambling possible
+                     }
+                  }
+               }
+            dbgprotocol("\n");
+            }
             break;
        default: esyslog("ERROR: CI conditional access support: unknown tag %06X", Tag);
                 return false;
@@ -901,20 +1061,27 @@ bool cCiConditionalAccessSupport::Process(int Length, const uint8_t *Data)
   else if (state == 0) {
      dbgprotocol("%d: ==> Ca Info Enq\n", SessionId());
      SendData(AOT_CA_INFO_ENQ);
-     state = 1;
+     state = 1; // enquired ca info
      }
   return true;
 }
 
-bool cCiConditionalAccessSupport::SendPMT(cCiCaPmt &CaPmt)
+bool cCiConditionalAccessSupport::SendPMT(cCiCaPmt *CaPmt)
 {
-  if (state == 2) {
+  if (CaPmt && state >= 2) {
-     SendData(AOT_CA_PMT, CaPmt.length, CaPmt.capmt);
+     dbgprotocol("%d: ==> Ca Pmt\n", SessionId());
+     SendData(AOT_CA_PMT, CaPmt->length, CaPmt->capmt);
+     state = 3; // sent ca pmt
      return true;
      }
   return false;
 }
 
+bool cCiConditionalAccessSupport::ReceivedReply(bool CanDescramble)
+{
+  return state >= (CanDescramble ? 5 : 4);
+}
+
 // --- cCiDateTime -----------------------------------------------------------
 
 class cCiDateTime : public cCiSession {
@@ -1307,78 +1474,6 @@ bool cCiEnquiry::Abort(void)
   return mmi && mmi->SendCloseMMI();
 }
 
-// --- cCiCaPmt --------------------------------------------------------------
-
-// Ca Pmt List Management:
-
-#define CPLM_MORE    0x00
-#define CPLM_FIRST   0x01
-#define CPLM_LAST    0x02
-#define CPLM_ONLY    0x03
-#define CPLM_ADD     0x04
-#define CPLM_UPDATE  0x05
-
-// Ca Pmt Cmd Ids:
-
-#define CPCI_OK_DESCRAMBLING  0x01
-#define CPCI_OK_MMI           0x02
-#define CPCI_QUERY            0x03
-#define CPCI_NOT_SELECTED     0x04
-
-cCiCaPmt::cCiCaPmt(int Source, int Transponder, int ProgramNumber, const unsigned short *CaSystemIds)
-{
-  caDescriptorsLength = GetCaDescriptors(Source, Transponder, ProgramNumber, CaSystemIds, sizeof(caDescriptors), caDescriptors, streamFlag);
-  length = 0;
-  capmt[length++] = CPLM_ONLY;
-  capmt[length++] = (ProgramNumber >> 8) & 0xFF;
-  capmt[length++] =  ProgramNumber       & 0xFF;
-  capmt[length++] = 0x01; // version_number, current_next_indicator - apparently vn doesn't matter, but cni must be 1
-  esInfoLengthPos = length;
-  capmt[length++] = 0x00; // program_info_length H (at program level)
-  capmt[length++] = 0x00; // program_info_length L
-  if (!streamFlag)
-     AddCaDescriptors(caDescriptorsLength, caDescriptors);
-}
-
-bool cCiCaPmt::Valid(void)
-{
-  return caDescriptorsLength > 0;
-}
-
-void cCiCaPmt::AddPid(int Pid, uint8_t StreamType)
-{
-  if (Pid) {
-     //XXX buffer overflow check???
-     capmt[length++] = StreamType;
-     capmt[length++] = (Pid >> 8) & 0xFF;
-     capmt[length++] =  Pid       & 0xFF;
-     esInfoLengthPos = length;
-     capmt[length++] = 0x00; // ES_info_length H (at ES level)
-     capmt[length++] = 0x00; // ES_info_length L
-     if (streamFlag)
-        AddCaDescriptors(caDescriptorsLength, caDescriptors);
-     }
-}
-
-void cCiCaPmt::AddCaDescriptors(int Length, const uint8_t *Data)
-{
-  if (esInfoLengthPos) {
-     if (length + Length < int(sizeof(capmt))) {
-        capmt[length++] = CPCI_OK_DESCRAMBLING;
-        memcpy(capmt + length, Data, Length);
-        length += Length;
-        int l = length - esInfoLengthPos - 2;
-        capmt[esInfoLengthPos]     = (l >> 8) & 0xFF;
-        capmt[esInfoLengthPos + 1] =  l       & 0xFF;
-        }
-     else
-        esyslog("ERROR: buffer overflow in CA descriptor");
-     esInfoLengthPos = 0;
-     }
-  else
-     esyslog("ERROR: adding CA descriptor without Pid!");
-}
-
 // -- cCiHandler -------------------------------------------------------------
 
 cCiHandler::cCiHandler(int Fd, int NumSlots)
@@ -1393,6 +1488,7 @@ cCiHandler::cCiHandler(int Fd, int NumSlots)
       moduleReady[i] = false;
   tpl = new cCiTransportLayer(Fd, numSlots);
   tc = NULL;
+  source = transponder = 0;
 }
 
 cCiHandler::~cCiHandler()
@@ -1556,58 +1652,98 @@ bool cCiHandler::Ready(void)
   return true;
 }
 
-bool cCiHandler::Process(void)
+bool cCiHandler::Process(int Slot)
 {
   bool result = true;
   cMutexLock MutexLock(&mutex);
-  for (int Slot = 0; Slot < numSlots; Slot++) {
+  for (int slot = 0; slot < numSlots; slot++) {
-      tc = tpl->Process(Slot);
+      if (Slot < 0 || slot == Slot) {
-      if (tc) {
+         tc = tpl->Process(slot);
-         int Length;
+         if (tc) {
-         const uint8_t *Data = tc->Data(Length);
+            int Length;
-         if (Data && Length > 1) {
+            const uint8_t *Data = tc->Data(Length);
-            switch (*Data) {
+            if (Data && Length > 1) {
-              case ST_SESSION_NUMBER:          if (Length > 4) {
+               switch (*Data) {
-                                                  int SessionId = ntohs(get_unaligned((uint16_t *)&Data[2]));
+                 case ST_SESSION_NUMBER:          if (Length > 4) {
-                                                  cCiSession *Session = GetSessionBySessionId(SessionId);
+                                                     int SessionId = ntohs(get_unaligned((uint16_t *)&Data[2]));
-                                                  if (Session)
+                                                     cCiSession *Session = GetSessionBySessionId(SessionId);
-                                                     Session->Process(Length - 4, Data + 4);
+                                                     if (Session)
-                                                  else
+                                                        Session->Process(Length - 4, Data + 4);
-                                                     esyslog("ERROR: unknown session id: %d", SessionId);
+                                                     else
-                                                  }
+                                                        esyslog("ERROR: unknown session id: %d", SessionId);
-                                               break;
+                                                     }
-              case ST_OPEN_SESSION_REQUEST:    OpenSession(Length, Data);
+                                                  break;
-                                               break;
+                 case ST_OPEN_SESSION_REQUEST:    OpenSession(Length, Data);
-              case ST_CLOSE_SESSION_REQUEST:   if (Length == 4)
+                                                  break;
-                                                  CloseSession(ntohs(get_unaligned((uint16_t *)&Data[2])));
+                 case ST_CLOSE_SESSION_REQUEST:   if (Length == 4)
-                                               break;
+                                                     CloseSession(ntohs(get_unaligned((uint16_t *)&Data[2])));
-              case ST_CREATE_SESSION_RESPONSE: //XXX fall through to default
+                                                  break;
-              case ST_CLOSE_SESSION_RESPONSE:  //XXX fall through to default
+                 case ST_CREATE_SESSION_RESPONSE: //XXX fall through to default
-              default: esyslog("ERROR: unknown session tag: %02X", *Data);
+                 case ST_CLOSE_SESSION_RESPONSE:  //XXX fall through to default
-              }
+                 default: esyslog("ERROR: unknown session tag: %02X", *Data);
+                 }
+               }
+            }
+         else if (CloseAllSessions(slot)) {
+            tpl->ResetSlot(slot);
+            result = false;
+            }
+         else if (tpl->ModuleReady(slot)) {
+            dbgprotocol("Module ready in slot %d\n", slot);
+            moduleReady[slot] = true;
+            tpl->NewConnection(slot);
             }
          }
-      else if (CloseAllSessions(Slot)) {
-         tpl->ResetSlot(Slot);
-         result = false;
-         }
-      else if (tpl->ModuleReady(Slot)) {
-         dbgprotocol("Module ready in slot %d\n", Slot);
-         moduleReady[Slot] = true;
-         tpl->NewConnection(Slot);
-         }
       }
+  SendCaPmt();
   bool UserIO = false;
   for (int i = 0; i < MAX_CI_SESSION; i++) {
       if (sessions[i] && sessions[i]->Process())
          UserIO |= sessions[i]->HasUserIO();
       }
   hasUserIO = UserIO;
-  if (newCaSupport)
-     newCaSupport = result = false; // triggers new SetCaPmt at caller!
   return result;
 }
 
+void cCiHandler::SendCaPmt(void)
+{
+  cMutexLock MutexLock(&mutex);
+  if (newCaSupport) {
+     newCaSupport = false;
+     for (int Slot = 0; Slot < numSlots; Slot++) {
+         cCiConditionalAccessSupport *cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
+         if (cas) {
+            // build the list of CA_PMT data:
+            cList<cCiCaPmt> CaPmtList;
+            for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
+                bool Active = false;
+                cCiCaPmt *CaPmt = new cCiCaPmt(CPCI_OK_DESCRAMBLING, source, transponder, p->programNumber, GetCaSystemIds(Slot));
+                if (CaPmt->Valid()) {
+                   for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
+                       if (q->active) {
+                          CaPmt->AddPid(q->pid, q->streamType);
+                          Active = true;
+                          }
+                       }
+                   }
+                if (Active)
+                   CaPmtList.Add(CaPmt);
+                else
+                   delete CaPmt;
+                }
+            // send the CA_PMT data:
+            uint8_t ListManagement = CaPmtList.Count() > 1 ? CPLM_FIRST : CPLM_ONLY;
+            for (cCiCaPmt *CaPmt = CaPmtList.First(); CaPmt; CaPmt = CaPmtList.Next(CaPmt)) {
+                CaPmt->SetListManagement(ListManagement);
+                if (!cas->SendPMT(CaPmt))
+                   newCaSupport = true;
+                ListManagement = CaPmt->Next() && CaPmt->Next()->Next() ? CPLM_MORE : CPLM_LAST;
+                }
+            }
+         }
+     }
+}
+
 bool cCiHandler::EnterMenu(int Slot)
 {
   cMutexLock MutexLock(&mutex);
@@ -1676,11 +1812,89 @@ bool cCiHandler::ProvidesCa(const unsigned short *CaSystemIds)
   return false;
 }
 
-bool cCiHandler::SetCaPmt(cCiCaPmt &CaPmt, int Slot)
+void cCiHandler::SetSource(int Source, int Transponder)
 {
   cMutexLock MutexLock(&mutex);
-  cCiConditionalAccessSupport *cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
+  if (source != Source || transponder != Transponder) {
-  return cas && cas->SendPMT(CaPmt);
+     //XXX if there are active entries, send an empty CA_PMT
+     caProgramList.Clear();
+     }
+  source = Source;
+  transponder = Transponder;
+}
+
+void cCiHandler::AddPid(int ProgramNumber, int Pid, int StreamType)
+{
+  cMutexLock MutexLock(&mutex);
+  cCiCaProgramData *ProgramData = NULL;
+  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
+      if (p->programNumber == ProgramNumber) {
+         ProgramData = p;
+         for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
+             if (q->pid == Pid)
+                return;
+             }
+         }
+      }
+  if (!ProgramData)
+     caProgramList.Add(ProgramData = new cCiCaProgramData(ProgramNumber));
+  ProgramData->pidList.Add(new cCiCaPidData(Pid, StreamType));
+}
+
+void cCiHandler::SetPid(int Pid, bool Active)
+{
+  cMutexLock MutexLock(&mutex);
+  for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
+      for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
+          if (q->pid == Pid) {
+             q->active = Active;
+             return;
+             }
+         }
+      }
+}
+
+bool cCiHandler::CanDecrypt(int ProgramNumber)
+{
+  cMutexLock MutexLock(&mutex);
+  for (int Slot = 0; Slot < numSlots; Slot++) {
+      cCiConditionalAccessSupport *cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
+      if (cas) {
+         for (cCiCaProgramData *p = caProgramList.First(); p; p = caProgramList.Next(p)) {
+             if (p->programNumber == ProgramNumber) {
+                cCiCaPmt CaPmt(CPCI_QUERY, source, transponder, p->programNumber, GetCaSystemIds(Slot));//XXX???
+                if (CaPmt.Valid()) {
+                   for (cCiCaPidData *q = p->pidList.First(); q; q = p->pidList.Next(q)) {
+//XXX                       if (q->active)
+                          CaPmt.AddPid(q->pid, q->streamType);
+                       }
+                   }
+                if (!cas->SendPMT(&CaPmt))
+                   return false;//XXX
+                //XXX
+                time_t timeout = time(NULL) + 3;//XXX
+                while (time(NULL) <= timeout) {
+                      Process(Slot);
+                      cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
+                      if (!cas)
+                         return false;//XXX
+                      if (cas->ReceivedReply(true))
+                         return true;
+                      //XXX remember if a slot doesn't receive a reply
+                      }
+                break;
+                }
+             }
+         }
+      }
+  return false;
+}
+
+void cCiHandler::StartDecrypting(void)
+{
+  cMutexLock MutexLock(&mutex);
+  newCaSupport = true;
+  SendCaPmt();
 }
 
 bool cCiHandler::Reset(int Slot)

ci.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ci.h 1.18 2005/10/30 12:31:14 kls Exp $
+ * $Id: ci.h 1.19 2005/11/26 13:37:42 kls Exp $
  */
 
 #ifndef __CI_H
@@ -13,6 +13,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include "thread.h"
+#include "tools.h"
 
 class cCiMMI;
 
@@ -65,25 +66,32 @@ public:
   bool Abort(void);
   };
 
-class cCiCaPmt {
-  friend class cCiConditionalAccessSupport;
-private:
-  int length;
-  int esInfoLengthPos;
-  uint8_t capmt[2048]; ///< XXX is there a specified maximum?
-  int caDescriptorsLength;
-  uint8_t caDescriptors[2048];
-  bool streamFlag;
-  void AddCaDescriptors(int Length, const uint8_t *Data);
-public:
-  cCiCaPmt(int Source, int Transponder, int ProgramNumber, const unsigned short *CaSystemIds);
-  bool Valid(void);
-  void AddPid(int Pid, uint8_t StreamType);
-  };
-
 #define MAX_CI_SESSION  16 //XXX
 #define MAX_CI_SLOT     16
 
+class cCiCaPidData : public cListObject {
+public:
+  bool active;
+  int pid;
+  int streamType;
+  cCiCaPidData(int Pid, int StreamType)
+  {
+    active = false;
+    pid = Pid;
+    streamType = StreamType;
+  }
+  };
+
+class cCiCaProgramData : public cListObject {
+public:
+  int programNumber;
+  cList<cCiCaPidData> pidList;
+  cCiCaProgramData(int ProgramNumber)
+  {
+    programNumber = ProgramNumber;
+  }
+  };
+
 class cCiSession;
 class cCiTransportLayer;
 class cCiTransportConnection;
@@ -99,6 +107,9 @@ private:
   cCiSession *sessions[MAX_CI_SESSION];
   cCiTransportLayer *tpl;
   cCiTransportConnection *tc;
+  int source;
+  int transponder;
+  cList<cCiCaProgramData> caProgramList;
   int ResourceIdToInt(const uint8_t *Data);
   bool Send(uint8_t Tag, int SessionId, int ResourceId = 0, int Status = -1);
   cCiSession *GetSessionBySessionId(int SessionId);
@@ -108,12 +119,15 @@ private:
   bool CloseSession(int SessionId);
   int CloseAllSessions(int Slot);
   cCiHandler(int Fd, int NumSlots);
+  void SendCaPmt(void);
 public:
   ~cCiHandler();
   static cCiHandler *CreateCiHandler(const char *FileName);
   int NumSlots(void) { return numSlots; }
   bool Ready(void);
-  bool Process(void);
+  bool Process(int Slot = -1);
+       ///< Processes the given Slot. If Slot is -1, all slots are processed.
+       ///< Returns false in case of an error.
   bool HasUserIO(void) { return hasUserIO; }
   bool EnterMenu(int Slot);
   cCiMenu *GetMenu(void);
@@ -121,7 +135,24 @@ public:
   const char *GetCamName(int Slot);
   const unsigned short *GetCaSystemIds(int Slot);
   bool ProvidesCa(const unsigned short *CaSystemIds); //XXX Slot???
-  bool SetCaPmt(cCiCaPmt &CaPmt, int Slot);
+  void SetSource(int Source, int Transponder);
+       ///< Sets the Source and Transponder of the device this cCiHandler is
+       ///< currently tuned to. If Source or Transponder are different than
+       ///< what was given in a previous call to SetSource(), any previously
+       ///< added PIDs will be cleared.
+  void AddPid(int ProgramNumber, int Pid, int StreamType);
+       ///< Adds the given PID information to the list of PIDs. A later call
+       ///< to SetPid() will (de)activate one of these entries.
+  void SetPid(int Pid, bool Active);
+       ///< Sets the given Pid (which has previously been added through a
+       ///< call to AddPid()) to Active. If Active is true, a later call to
+       ///< StartDecrypting() will send the full list of currently active CA_PMT
+       ///< entries to the CAM, including this one.
+  bool CanDecrypt(int ProgramNumber);
+       ///< XXX
+  void StartDecrypting(void);
+       ///< Triggers sending all currently active CA_PMT entries to the CAM,
+       ///< so that it will start decrypting.
   bool Reset(int Slot);
   };
 

device.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: device.c 1.111 2005/11/05 15:23:58 kls Exp $
+ * $Id: device.c 1.112 2005/11/26 12:56:09 kls Exp $
  */
 
 #include "device.h"
@@ -397,6 +397,8 @@ bool cDevice::AddPid(int Pid, ePidType PidType)
               DelPid(Pid, PidType);
               return false;
               }
+           if (ciHandler)
+              ciHandler->SetPid(Pid, true);
            }
         PRINTPIDS("a");
         return true;
@@ -424,6 +426,8 @@ bool cDevice::AddPid(int Pid, ePidType PidType)
            DelPid(Pid, PidType);
            return false;
            }
+        if (ciHandler)
+           ciHandler->SetPid(Pid, true);
         }
      }
   return true;
@@ -450,6 +454,8 @@ void cDevice::DelPid(int Pid, ePidType PidType)
            if (pidHandles[n].used == 0) {
               pidHandles[n].handle = -1;
               pidHandles[n].pid = 0;
+              if (ciHandler)
+                 ciHandler->SetPid(Pid, false);
               }
            }
         PRINTPIDS("E");
@@ -601,12 +607,34 @@ eSetChannelResult cDevice::SetChannel(const cChannel *Channel, bool LiveView)
         sectionHandler->SetStatus(false);
         sectionHandler->SetChannel(NULL);
         }
+     // Tell the ciHandler about the channel switch and add all PIDs of this
+     // channel to it, for possible later decryption:
+     if (ciHandler) {
+        ciHandler->SetSource(Channel->Source(), Channel->Transponder());
+// Men at work - please stand clear! ;-)
+#ifdef XXX_DO_MULTIPLE_CA_CHANNELS
+        if (Channel->Ca() > CACONFBASE) {
+#endif
+           ciHandler->AddPid(Channel->Sid(), Channel->Vpid(), 2);
+           for (const int *Apid = Channel->Apids(); *Apid; Apid++)
+               ciHandler->AddPid(Channel->Sid(), *Apid, 4);
+           for (const int *Dpid = Channel->Dpids(); *Dpid; Dpid++)
+               ciHandler->AddPid(Channel->Sid(), *Dpid, 0);
+#ifdef XXX_DO_MULTIPLE_CA_CHANNELS
+           bool CanDecrypt = ciHandler->CanDecrypt(Channel->Sid());//XXX
+           dsyslog("CanDecrypt %d %d %d %s", CardIndex() + 1, CanDecrypt, Channel->Number(), Channel->Name());//XXX
+           }
+#endif
+        }
      if (SetChannelDevice(Channel, LiveView)) {
         // Start section handling:
         if (sectionHandler) {
            sectionHandler->SetChannel(Channel);
            sectionHandler->SetStatus(true);
            }
+        // Start decrypting any PIDs the might have been set in SetChannelDevice():
+        if (ciHandler)
+           ciHandler->StartDecrypting();
         }
      else
         Result = scrFailed;
@@ -1168,6 +1196,8 @@ bool cDevice::AttachReceiver(cReceiver *Receiver)
          Unlock();
          if (!Running())
             Start();
+         if (ciHandler)
+            ciHandler->StartDecrypting();
          return true;
          }
       }
@@ -1194,6 +1224,8 @@ void cDevice::Detach(cReceiver *Receiver)
       else if (receiver[i])
          receiversLeft = true;
       }
+  if (ciHandler)
+     ciHandler->StartDecrypting();
   if (!receiversLeft)
      Cancel(3);
 }

dvbdevice.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbdevice.c 1.137 2005/11/11 14:53:52 kls Exp $
+ * $Id: dvbdevice.c 1.138 2005/11/26 13:23:11 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -35,6 +35,7 @@ extern "C" {
 
 #define DO_REC_AND_PLAY_ON_PRIMARY_DEVICE 1
 #define DO_MULTIPLE_RECORDINGS 1
+//#define DO_MULTIPLE_CA_CHANNELS
 
 #define DEV_VIDEO         "/dev/video"
 #define DEV_DVB_ADAPTER   "/dev/dvb/adapter"
@@ -69,15 +70,13 @@ static int DvbOpen(const char *Name, int n, int Mode, bool ReportError = false)
 
 class cDvbTuner : public cThread {
 private:
-  enum eTunerStatus { tsIdle, tsSet, tsTuned, tsLocked, tsCam };
+  enum eTunerStatus { tsIdle, tsSet, tsTuned, tsLocked };
   int fd_frontend;
   int cardIndex;
   fe_type_t frontendType;
   cCiHandler *ciHandler;
   cChannel channel;
   const char *diseqcCommands;
-  bool useCa;
-  time_t startTime;
   eTunerStatus tunerStatus;
   cMutex mutex;
   cCondVar locked;
@@ -89,7 +88,7 @@ public:
   cDvbTuner(int Fd_Frontend, int CardIndex, fe_type_t FrontendType, cCiHandler *CiHandler);
   virtual ~cDvbTuner();
   bool IsTunedTo(const cChannel *Channel) const;
-  void Set(const cChannel *Channel, bool Tune, bool UseCa);
+  void Set(const cChannel *Channel, bool Tune);
   bool Locked(int TimeoutMs = 0);
   };
 
@@ -100,9 +99,7 @@ cDvbTuner::cDvbTuner(int Fd_Frontend, int CardIndex, fe_type_t FrontendType, cCi
   frontendType = FrontendType;
   ciHandler = CiHandler;
   diseqcCommands = NULL;
-  useCa = false;
   tunerStatus = tsIdle;
-  startTime = time(NULL);
   if (frontendType == FE_QPSK)
      CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
   SetDescription("tuner on device %d", cardIndex + 1);
@@ -122,16 +119,11 @@ bool cDvbTuner::IsTunedTo(const cChannel *Channel) const
   return tunerStatus != tsIdle && channel.Source() == Channel->Source() && channel.Transponder() == Channel->Transponder();
 }
 
-void cDvbTuner::Set(const cChannel *Channel, bool Tune, bool UseCa)
+void cDvbTuner::Set(const cChannel *Channel, bool Tune)
 {
   cMutexLock MutexLock(&mutex);
   if (Tune)
      tunerStatus = tsSet;
-  else if (tunerStatus == tsCam)
-     tunerStatus = tsLocked;
-  useCa = UseCa;
-  if (Channel->Ca() && tunerStatus != tsCam)
-     startTime = time(NULL);
   channel = *Channel;
   newSet.Broadcast();
 }
@@ -309,7 +301,6 @@ void cDvbTuner::Action(void)
                continue;
           case tsTuned:
           case tsLocked:
-          case tsCam:
                if (hasEvent) {
                   if (event.status & FE_REINIT) {
                      tunerStatus = tsSet;
@@ -323,30 +314,10 @@ void cDvbTuner::Action(void)
                   }
           }
 
-        if (ciHandler) {
+        if (ciHandler)
-           if (ciHandler->Process() && useCa) {
+           ciHandler->Process();
-              if (tunerStatus == tsLocked) {
-                 for (int Slot = 0; Slot < ciHandler->NumSlots(); Slot++) {
-                     cCiCaPmt CaPmt(channel.Source(), channel.Transponder(), channel.Sid(), ciHandler->GetCaSystemIds(Slot));
-                     if (CaPmt.Valid()) {
-                        CaPmt.AddPid(channel.Vpid(), 2);
-                        CaPmt.AddPid(channel.Apid(0), 4);
-                        CaPmt.AddPid(channel.Apid(1), 4);
-                        CaPmt.AddPid(channel.Dpid(0), 0);
-                        if (ciHandler->SetCaPmt(CaPmt, Slot)) {
-                           tunerStatus = tsCam;
-                           startTime = 0;
-                           }
-                        }
-                     }
-                 }
-              }
-           else if (tunerStatus > tsLocked)
-              tunerStatus = tsLocked;
-           }
-        // in the beginning we loop more often to let the CAM connection start up fast
         if (tunerStatus != tsTuned)
-           newSet.TimedWait(mutex, (ciHandler && (time(NULL) - startTime < 20)) ? 100 : 1000);
+           newSet.TimedWait(mutex, 1000);
         }
 }
 
@@ -782,9 +753,12 @@ bool cDvbDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *Ne
         if (dvbTuner->IsTunedTo(Channel)) {
            if (Channel->Vpid() && !HasPid(Channel->Vpid()) || Channel->Apid(0) && !HasPid(Channel->Apid(0))) {
 #ifdef DO_MULTIPLE_RECORDINGS
+#ifndef DO_MULTIPLE_CA_CHANNELS
               if (Ca() > CACONFBASE || Channel->Ca() > CACONFBASE)
                  needsDetachReceivers = Ca() != Channel->Ca();
-              else if (!IsPrimaryDevice())
+              else
+#endif
+              if (!IsPrimaryDevice())
                  result = true;
 #ifdef DO_REC_AND_PLAY_ON_PRIMARY_DEVICE
               else
@@ -834,13 +808,13 @@ bool cDvbDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
 
   // Set the tuner:
 
-  dvbTuner->Set(Channel, DoTune, !EITScanner.UsesDevice(this)); //XXX 1.3: this is an ugly hack - find a cleaner solution//XXX
+  dvbTuner->Set(Channel, DoTune);
 
   // If this channel switch was requested by the EITScanner we don't wait for
   // a lock and don't set any live PIDs (the EITScanner will wait for the lock
   // by itself before setting any filters):
 
-  if (EITScanner.UsesDevice(this))
+  if (EITScanner.UsesDevice(this)) //XXX
      return true;
 
   // PID settings: