/* * $Id: filter.c,v 1.12.2.1 2009/02/13 13:02:33 schmirl Exp $ */ #include "client/filter.h" #include "client/socket.h" #include "tools/select.h" #include "common.h" #include // --- cStreamdevFilter ------------------------------------------------------ class cStreamdevFilter: public cListObject { private: uchar m_Buffer[4096]; int m_Used; int m_Pipe[2]; u_short m_Pid; u_char m_Tid; u_char m_Mask; public: cStreamdevFilter(u_short Pid, u_char Tid, u_char Mask); virtual ~cStreamdevFilter(); bool Matches(u_short Pid, u_char Tid); bool PutSection(const uchar *Data, int Length, bool Pusi); int ReadPipe(void) const { return m_Pipe[0]; } bool IsClosed(void); void Reset(void); u_short Pid(void) const { return m_Pid; } u_char Tid(void) const { return m_Tid; } u_char Mask(void) const { return m_Mask; } }; inline bool cStreamdevFilter::Matches(u_short Pid, u_char Tid) { return m_Pid == Pid && m_Tid == (Tid & m_Mask); } cStreamdevFilter::cStreamdevFilter(u_short Pid, u_char Tid, u_char Mask) { m_Used = 0; m_Pid = Pid; m_Tid = Tid; m_Mask = Mask; m_Pipe[0] = m_Pipe[1] = -1; #ifdef SOCK_SEQPACKET // SOCK_SEQPACKET (since kernel 2.6.4) if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, m_Pipe) != 0) { esyslog("streamdev-client: socketpair(SOCK_SEQPACKET) failed: %m, trying SOCK_DGRAM"); } #endif if (m_Pipe[0] < 0 && socketpair(AF_UNIX, SOCK_DGRAM, 0, m_Pipe) != 0) { esyslog("streamdev-client: couldn't open section filter socket: %m"); } else if(fcntl(m_Pipe[0], F_SETFL, O_NONBLOCK) != 0 || fcntl(m_Pipe[1], F_SETFL, O_NONBLOCK) != 0) { esyslog("streamdev-client: couldn't set section filter socket to non-blocking mode: %m"); } } cStreamdevFilter::~cStreamdevFilter() { Dprintf("~cStreamdevFilter %p\n", this); // ownership of handle m_Pipe[0] has been transferred to VDR section handler //if (m_Pipe[0] >= 0) // close(m_Pipe[0]); if (m_Pipe[1] >= 0) close(m_Pipe[1]); } bool cStreamdevFilter::PutSection(const uchar *Data, int Length, bool Pusi) { if (!m_Used && !Pusi) /* wait for payload unit start indicator */ return true; if (m_Used && Pusi) /* reset at payload unit start */ Reset(); if (m_Used + Length >= (int)sizeof(m_Buffer)) { esyslog("ERROR: Streamdev: Section handler buffer overflow (%d bytes lost)", Length); Reset(); return true; } memcpy(m_Buffer + m_Used, Data, Length); m_Used += Length; if (m_Used > 3) { int length = (((m_Buffer[1] & 0x0F) << 8) | m_Buffer[2]) + 3; if (m_Used == length) { m_Used = 0; if (write(m_Pipe[1], m_Buffer, length) < 0) { if(errno == EAGAIN || errno == EWOULDBLOCK) dsyslog("cStreamdevFilter::PutSection socket overflow, " "Pid %4d Tid %3d", m_Pid, m_Tid); else return false; } } if (m_Used > length) { dsyslog("cStreamdevFilter::PutSection: m_Used > length ! Pid %2d, Tid%2d " "(len %3d, got %d/%d)", m_Pid, m_Tid, Length, m_Used, length); if(Length < TS_SIZE-5) { // TS packet not full -> this must be last TS packet of section data -> safe to reset now Reset(); } } } return true; } void cStreamdevFilter::Reset(void) { if(m_Used) dsyslog("cStreamdevFilter::Reset skipping %d bytes", m_Used); m_Used = 0; } bool cStreamdevFilter::IsClosed(void) { char m_Buffer[3] = {0,0,0}; /* tid 0, 0 bytes */ // Test if pipe/socket has been closed by writing empty section if (write(m_Pipe[1], m_Buffer, 3) < 0 && errno != EAGAIN && errno != EWOULDBLOCK) { if (errno != ECONNREFUSED && errno != ECONNRESET && errno != EPIPE) esyslog("cStreamdevFilter::IsClosed failed: %m"); return true; } return false; } // --- cStreamdevFilters ----------------------------------------------------- cStreamdevFilters::cStreamdevFilters(void): cThread("streamdev-client: sections assembler") { m_TSBuffer = NULL; } cStreamdevFilters::~cStreamdevFilters() { SetConnection(-1); } int cStreamdevFilters::OpenFilter(u_short Pid, u_char Tid, u_char Mask) { CarbageCollect(); cStreamdevFilter *f = new cStreamdevFilter(Pid, Tid, Mask); int fh = f->ReadPipe(); Lock(); Add(f); Unlock(); return fh; } void cStreamdevFilters::CarbageCollect(void) { LOCK_THREAD; for (cStreamdevFilter *fi = First(); fi;) { if (fi->IsClosed()) { if (errno == ECONNREFUSED || errno == ECONNRESET || errno == EPIPE) { ClientSocket.SetFilter(fi->Pid(), fi->Tid(), fi->Mask(), false); Dprintf("cStreamdevFilters::CarbageCollector: filter closed: Pid %4d, Tid %3d, Mask %2x (%d filters left)", (int)fi->Pid(), (int)fi->Tid(), fi->Mask(), Count()-1); cStreamdevFilter *next = Prev(fi); Del(fi); fi = next ? Next(next) : First(); } else { esyslog("cStreamdevFilters::CarbageCollector() error: " "Pid %4d, Tid %3d, Mask %2x (%d filters left) failed", (int)fi->Pid(), (int)fi->Tid(), fi->Mask(), Count()-1); LOG_ERROR; fi = Next(fi); } } else { fi = Next(fi); } } } bool cStreamdevFilters::ReActivateFilters(void) { LOCK_THREAD; bool res = true; CarbageCollect(); for (cStreamdevFilter *fi = First(); fi; fi = Next(fi)) { res = ClientSocket.SetFilter(fi->Pid(), fi->Tid(), fi->Mask(), true) && res; Dprintf("ReActivateFilters(%d, %d, %d) -> %s", fi->Pid(), fi->Tid(), fi->Mask(), res ? "Ok" :"FAIL"); } return res; } void cStreamdevFilters::SetConnection(int Handle) { Cancel(2); DELETENULL(m_TSBuffer); if (Handle >= 0) { m_TSBuffer = new cTSBuffer(Handle, MEGABYTE(1), 1); ReActivateFilters(); Start(); } } void cStreamdevFilters::Action(void) { int fails = 0; while (Running()) { const uchar *block = m_TSBuffer->Get(); if (block) { u_short pid = (((u_short)block[1] & PID_MASK_HI) << 8) | block[2]; u_char tid = block[3]; bool Pusi = block[1] & 0x40; // proprietary extension int len = block[4]; #if 0 if (block[1] == 0xff && block[2] == 0xff && block[3] == 0xff && block[4] == 0x7f) isyslog("*********** TRANSPONDER -> %s **********", block+5); #endif LOCK_THREAD; cStreamdevFilter *f = First(); while (f) { cStreamdevFilter *next = Next(f); if (f->Matches(pid, tid)) { if (f->PutSection(block + 5, len, Pusi)) break; if (errno != ECONNREFUSED && errno != ECONNRESET && errno != EPIPE) { Dprintf("FATAL ERROR: %m\n"); esyslog("streamdev-client: couldn't send section packet: %m"); } ClientSocket.SetFilter(f->Pid(), f->Tid(), f->Mask(), false); Del(f); // Filter was closed. // - need to check remaining filters for another match } f = next; } } else { #if 1 // TODO: this should be fixed in vdr cTSBuffer // Check disconnection int fd = *ClientSocket.DataSocket(siLiveFilter); if(fd < 0) break; cPoller Poller(fd); if (Poller.Poll()) { char tmp[1]; errno = 0; Dprintf("cStreamdevFilters::Action(): checking connection"); if (recv(fd, tmp, 1, MSG_PEEK) == 0 && errno != EAGAIN) { ++fails; if (fails >= 10) { esyslog("cStreamdevFilters::Action(): stream disconnected ?"); ClientSocket.CloseDataConnection(siLiveFilter); break; } } else { fails = 0; } } else { fails = 0; } cCondWait::SleepMs(10); #endif } } DELETENULL(m_TSBuffer); dsyslog("StreamdevFilters::Action() ended"); }