diff options
Diffstat (limited to 'svdrp.c')
| -rw-r--r-- | svdrp.c | 830 |
1 files changed, 693 insertions, 137 deletions
@@ -10,7 +10,7 @@ * and interact with the Video Disk Recorder - or write a full featured * graphical interface that sits on top of an SVDRP connection. * - * $Id: svdrp.c 4.1 2015/04/29 13:10:01 kls Exp $ + * $Id: svdrp.c 4.2 2015/05/22 11:01:33 kls Exp $ */ #include "svdrp.h" @@ -18,6 +18,7 @@ #include <ctype.h> #include <errno.h> #include <fcntl.h> +#include <ifaddrs.h> #include <netinet/in.h> #include <stdarg.h> #include <stdio.h> @@ -38,32 +39,94 @@ #include "skins.h" #include "thread.h" #include "timers.h" -#include "tools.h" #include "videodir.h" +static bool DumpSVDRPDataTransfer = false; + +#define dbgsvdrp(a...) if (DumpSVDRPDataTransfer) fprintf(stderr, a) + +static const char *HostName(void) +{ + static char buffer[HOST_NAME_MAX] = ""; + if (!*buffer) { + if (gethostname(buffer, sizeof(buffer)) < 0) { + LOG_ERROR; + strcpy(buffer, "vdr"); + } + } + return buffer; +} + +// --- cIpAddress ------------------------------------------------------------ + +class cIpAddress { +private: + cString address; + int port; + cString connection; +public: + cIpAddress(void); + cIpAddress(const char *Address, int Port); + const char *Address(void) const { return address; } + int Port(void) const { return port; } + void Set(const char *Address, int Port); + void Set(const sockaddr *SockAddr); + const char *Connection(void) const { return connection; } + }; + +cIpAddress::cIpAddress(void) +{ + Set(INADDR_ANY, 0); +} + +cIpAddress::cIpAddress(const char *Address, int Port) +{ + Set(Address, Port); +} + +void cIpAddress::Set(const char *Address, int Port) +{ + address = Address; + port = Port; + connection = cString::sprintf("%s:%d", *address, port); +} + +void cIpAddress::Set(const sockaddr *SockAddr) +{ + const sockaddr_in *Addr = (sockaddr_in *)SockAddr; + Set(inet_ntoa(Addr->sin_addr), ntohs(Addr->sin_port)); +} + // --- cSocket --------------------------------------------------------------- +#define MAXUDPBUF 1024 + class cSocket { private: int port; + bool tcp; int sock; - int queue; - cString lastAcceptedConnection; + cIpAddress lastIpAddress; + bool IsOwnInterface(sockaddr_in *Addr); public: - cSocket(int Port, int Queue = 1); + cSocket(int Port, bool Tcp); ~cSocket(); - bool Open(void); + bool Listen(void); + bool Connect(const char *Address); void Close(void); + int Port(void) const { return port; } int Socket(void) const { return sock; } + static bool SendDgram(const char *Dgram, int Port, const char *Address = NULL); int Accept(void); - const char *LastAcceptedConnection(void) const { return lastAcceptedConnection; } + cString Discover(void); + const cIpAddress *LastIpAddress(void) const { return &lastIpAddress; } }; -cSocket::cSocket(int Port, int Queue) +cSocket::cSocket(int Port, bool Tcp) { port = Port; + tcp = Tcp; sock = -1; - queue = Queue; } cSocket::~cSocket() @@ -71,6 +134,30 @@ cSocket::~cSocket() Close(); } +bool cSocket::IsOwnInterface(sockaddr_in *Addr) +{ + ifaddrs *ifaddr; + if (getifaddrs(&ifaddr) >= 0) { + bool Own = false; + for (ifaddrs *ifa = ifaddr; ifa; ifa = ifa->ifa_next) { + if (ifa->ifa_addr) { + if (ifa->ifa_addr->sa_family == AF_INET) { + sockaddr_in *addr = (sockaddr_in *)ifa->ifa_addr; + if (addr->sin_addr.s_addr == Addr->sin_addr.s_addr) { + Own = true; + break; + } + } + } + } + freeifaddrs(ifaddr); + return Own; + } + else + LOG_ERROR; + return false; +} + void cSocket::Close(void) { if (sock >= 0) { @@ -79,75 +166,176 @@ void cSocket::Close(void) } } -bool cSocket::Open(void) +bool cSocket::Listen(void) { if (sock < 0) { // create socket: - sock = socket(PF_INET, SOCK_STREAM, 0); + sock = tcp ? socket(PF_INET, SOCK_STREAM, IPPROTO_IP) : socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock < 0) { LOG_ERROR; - port = 0; return false; } // allow it to always reuse the same port: int ReUseAddr = 1; setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &ReUseAddr, sizeof(ReUseAddr)); - // - struct sockaddr_in name; - name.sin_family = AF_INET; - name.sin_port = htons(port); - name.sin_addr.s_addr = SVDRPhosts.LocalhostOnly() ? htonl(INADDR_LOOPBACK) : htonl(INADDR_ANY); - if (bind(sock, (struct sockaddr *)&name, sizeof(name)) < 0) { + // configure port and ip: + sockaddr_in Addr; + memset(&Addr, 0, sizeof(Addr)); + Addr.sin_family = AF_INET; + Addr.sin_port = htons(port); + Addr.sin_addr.s_addr = SVDRPhosts.LocalhostOnly() ? htonl(INADDR_LOOPBACK) : htonl(INADDR_ANY); + if (bind(sock, (sockaddr *)&Addr, sizeof(Addr)) < 0) { + LOG_ERROR; + Close(); + return false; + } + // make it non-blocking: + int Flags = fcntl(sock, F_GETFL, 0); + if (Flags < 0) { + LOG_ERROR; + return false; + } + Flags |= O_NONBLOCK; + if (fcntl(sock, F_SETFL, Flags) < 0) { + LOG_ERROR; + return false; + } + if (tcp) { + // listen to the socket: + if (listen(sock, 1) < 0) { + LOG_ERROR; + return false; + } + } + isyslog("SVDRP listening on port %d/%s", port, tcp ? "tcp" : "udp"); + } + return true; +} + +bool cSocket::Connect(const char *Address) +{ + if (sock < 0 && tcp) { + // create socket: + sock = socket(PF_INET, SOCK_STREAM, IPPROTO_IP); + if (sock < 0) { + LOG_ERROR; + return false; + } + // configure port and ip: + sockaddr_in Addr; + memset(&Addr, 0, sizeof(Addr)); + Addr.sin_family = AF_INET; + Addr.sin_port = htons(port); + Addr.sin_addr.s_addr = inet_addr(Address); + if (connect(sock, (sockaddr *)&Addr, sizeof(Addr)) < 0) { LOG_ERROR; Close(); return false; } // make it non-blocking: - int oldflags = fcntl(sock, F_GETFL, 0); - if (oldflags < 0) { + int Flags = fcntl(sock, F_GETFL, 0); + if (Flags < 0) { LOG_ERROR; return false; } - oldflags |= O_NONBLOCK; - if (fcntl(sock, F_SETFL, oldflags) < 0) { + Flags |= O_NONBLOCK; + if (fcntl(sock, F_SETFL, Flags) < 0) { LOG_ERROR; return false; } - // listen to the socket: - if (listen(sock, queue) < 0) { + isyslog("SVDRP > %s:%d connection established", Address, port); + return true; + } + return false; +} + +bool cSocket::SendDgram(const char *Dgram, int Port, const char *Address) +{ + // Create a socket: + int Socket = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); + if (Socket < 0) { + LOG_ERROR; + return false; + } + if (!Address) { + // Enable broadcast: + int One = 1; + if (setsockopt(Socket, SOL_SOCKET, SO_BROADCAST, &One, sizeof(One)) < 0) { LOG_ERROR; + close(Socket); return false; } - isyslog("SVDRP listening on port %d/tcp", port); } - return true; + // Configure port and ip: + sockaddr_in Addr; + memset(&Addr, 0, sizeof(Addr)); + Addr.sin_family = AF_INET; + Addr.sin_addr.s_addr = Address ? inet_addr(Address) : htonl(INADDR_BROADCAST); + Addr.sin_port = htons(Port); + // Send datagram: + dsyslog("SVDRP > %s:%d send dgram '%s'", inet_ntoa(Addr.sin_addr), Port, Dgram); + int Length = strlen(Dgram); + int Sent = sendto(Socket, Dgram, Length, 0, (sockaddr *)&Addr, sizeof(Addr)); + if (Sent < 0) + LOG_ERROR; + close(Socket); + return Sent == Length; } int cSocket::Accept(void) { - if (Open()) { - struct sockaddr_in clientname; - uint size = sizeof(clientname); - int newsock = accept(sock, (struct sockaddr *)&clientname, &size); - if (newsock >= 0) { - bool accepted = SVDRPhosts.Acceptable(clientname.sin_addr.s_addr); - if (!accepted) { + if (sock >= 0 && tcp) { + sockaddr_in Addr; + uint Size = sizeof(Addr); + int NewSock = accept(sock, (sockaddr *)&Addr, &Size); + if (NewSock >= 0) { + bool Accepted = SVDRPhosts.Acceptable(Addr.sin_addr.s_addr); + if (!Accepted) { const char *s = "Access denied!\n"; - if (write(newsock, s, strlen(s)) < 0) + if (write(NewSock, s, strlen(s)) < 0) LOG_ERROR; - close(newsock); - newsock = -1; + close(NewSock); + NewSock = -1; } - lastAcceptedConnection = cString::sprintf("%s:%hu", inet_ntoa(clientname.sin_addr), ntohs(clientname.sin_port)); - isyslog("SVDRP %s connection %s", *lastAcceptedConnection, accepted ? "accepted" : "DENIED"); + lastIpAddress.Set((sockaddr *)&Addr); + isyslog("SVDRP < %s connection %s", lastIpAddress.Connection(), Accepted ? "accepted" : "DENIED"); } - else if (errno != EINTR && errno != EAGAIN) + else if (FATALERRNO) LOG_ERROR; - return newsock; + return NewSock; } return -1; } +cString cSocket::Discover(void) +{ + if (sock >= 0 && !tcp) { + char buf[MAXUDPBUF]; + sockaddr_in Addr; + uint Size = sizeof(Addr); + int NumBytes = recvfrom(sock, buf, sizeof(buf), 0, (sockaddr *)&Addr, &Size); + if (NumBytes >= 0) { + buf[NumBytes] = 0; + if (!IsOwnInterface(&Addr)) { + lastIpAddress.Set((sockaddr *)&Addr); + if (!SVDRPhosts.Acceptable(Addr.sin_addr.s_addr)) { + dsyslog("SVDRP < %s discovery ignored (%s)", lastIpAddress.Connection(), buf); + return NULL; + } + if (!startswith(buf, "SVDRP:discover")) { + dsyslog("SVDRP < %s discovery unrecognized (%s)", lastIpAddress.Connection(), buf); + return NULL; + } + isyslog("SVDRP < %s discovery received (%s)", lastIpAddress.Connection(), buf); + return buf; + } + } + else if (FATALERRNO) + LOG_ERROR; + } + return NULL; +} + // --- cPUTEhandler ---------------------------------------------------------- class cPUTEhandler { @@ -208,7 +396,7 @@ bool cPUTEhandler::Process(const char *s) return false; } -// --- cSVDRP ---------------------------------------------------------------- +// --- cSVDRPServer ---------------------------------------------------------- #define MAXHELPTOPIC 10 #define EITDISABLETIME 10 // seconds until EIT processing is enabled again after a CLRE command @@ -311,6 +499,10 @@ const char *HelpPages[] = { " zero, this means that the timer is currently recording and has started\n" " at the given time. The first value in the resulting line is the number\n" " of the timer.", + "PING\n" + " Used by peer-to-peer connections between VDRs to keep the connection\n" + " from timing out. May be used at any time and simply returns a line of\n" + " the form '<hostname> is alive'.", "PLAY <number> [ begin | <position> ]\n" " Play the recording with the given number. Before a recording can be\n" " played, an LSTR command must have been executed in order to retrieve\n" @@ -420,7 +612,7 @@ const char *GetHelpPage(const char *Cmd, const char **p) static cString grabImageDir; -class cSVDRP { +class cSVDRPServer { private: int socket; cString connection; @@ -456,6 +648,7 @@ private: void CmdNEWC(const char *Option); void CmdNEWT(const char *Option); void CmdNEXT(const char *Option); + void CmdPING(const char *Option); void CmdPLAY(const char *Option); void CmdPLUG(const char *Option); void CmdPUTE(const char *Option); @@ -467,13 +660,16 @@ private: void CmdVOLU(const char *Option); void Execute(char *Cmd); public: - cSVDRP(int Socket, const char *Connection); - ~cSVDRP(); + cSVDRPServer(int Socket, const char *Connection); + ~cSVDRPServer(); bool HasConnection(void) { return file.IsOpen(); } bool Process(void); }; -cSVDRP::cSVDRP(int Socket, const char *Connection) +static cPoller SVDRPServerPoller; +static cPoller SVDRPClientPoller; + +cSVDRPServer::cSVDRPServer(int Socket, const char *Connection) { socket = Socket; connection = Connection; @@ -483,37 +679,35 @@ cSVDRP::cSVDRP(int Socket, const char *Connection) cmdLine = MALLOC(char, length); lastActivity = time(NULL); if (file.Open(socket)) { - //TODO how can we get the *full* hostname? - char buffer[BUFSIZ]; - gethostname(buffer, sizeof(buffer)); time_t now = time(NULL); - Reply(220, "%s SVDRP VideoDiskRecorder %s; %s; %s", buffer, VDRVERSION, *TimeToString(now), cCharSetConv::SystemCharacterTable() ? cCharSetConv::SystemCharacterTable() : "UTF-8"); + Reply(220, "%s SVDRP VideoDiskRecorder %s; %s; %s", HostName(), VDRVERSION, *TimeToString(now), cCharSetConv::SystemCharacterTable() ? cCharSetConv::SystemCharacterTable() : "UTF-8"); + SVDRPServerPoller.Add(file, false); } + dsyslog("SVDRP < %s server created", *connection); } -cSVDRP::~cSVDRP() +cSVDRPServer::~cSVDRPServer() { Close(true); free(cmdLine); + dsyslog("SVDRP < %s server destroyed", *connection); } -void cSVDRP::Close(bool SendReply, bool Timeout) +void cSVDRPServer::Close(bool SendReply, bool Timeout) { if (file.IsOpen()) { if (SendReply) { - //TODO how can we get the *full* hostname? - char buffer[BUFSIZ]; - gethostname(buffer, sizeof(buffer)); - Reply(221, "%s closing connection%s", buffer, Timeout ? " (timeout)" : ""); + Reply(221, "%s closing connection%s", HostName(), Timeout ? " (timeout)" : ""); } - isyslog("SVDRP %s connection closed", *connection); + isyslog("SVDRP < %s connection closed", *connection); + SVDRPServerPoller.Del(file, false); file.Close(); DELETENULL(PUTEhandler); } close(socket); } -bool cSVDRP::Send(const char *s, int length) +bool cSVDRPServer::Send(const char *s, int length) { if (length < 0) length = strlen(s); @@ -525,7 +719,7 @@ bool cSVDRP::Send(const char *s, int length) return true; } -void cSVDRP::Reply(int Code, const char *fmt, ...) +void cSVDRPServer::Reply(int Code, const char *fmt, ...) { if (file.IsOpen()) { if (Code != 0) { @@ -548,12 +742,12 @@ void cSVDRP::Reply(int Code, const char *fmt, ...) } else { Reply(451, "Zero return code - looks like a programming error!"); - esyslog("SVDRP %s zero return code!", *connection); + esyslog("SVDRP < %s zero return code!", *connection); } } } -void cSVDRP::PrintHelpTopics(const char **hp) +void cSVDRPServer::PrintHelpTopics(const char **hp) { int NumPages = 0; if (hp) { @@ -579,7 +773,7 @@ void cSVDRP::PrintHelpTopics(const char **hp) } } -void cSVDRP::CmdCHAN(const char *Option) +void cSVDRPServer::CmdCHAN(const char *Option) { if (*Option) { int n = -1; @@ -645,7 +839,7 @@ void cSVDRP::CmdCHAN(const char *Option) Reply(550, "Unable to find channel \"%d\"", cDevice::CurrentChannel()); } -void cSVDRP::CmdCLRE(const char *Option) +void cSVDRPServer::CmdCLRE(const char *Option) { if (*Option) { tChannelID ChannelID = tChannelID::InvalidID; @@ -710,7 +904,7 @@ void cSVDRP::CmdCLRE(const char *Option) } } -void cSVDRP::CmdDELC(const char *Option) +void cSVDRPServer::CmdDELC(const char *Option) { if (*Option) { if (isnumber(Option)) { @@ -735,7 +929,7 @@ void cSVDRP::CmdDELC(const char *Option) Channels.Del(channel); Channels.ReNumber(); Channels.SetModified(true); - isyslog("SVDRP %s channel %s deleted", *connection, Option); + isyslog("SVDRP < %s channel %s deleted", *connection, Option); if (CurrentChannel && CurrentChannel->Number() != CurrentChannelNr) { if (!cDevice::PrimaryDevice()->Replaying() || cDevice::PrimaryDevice()->Transferring()) Channels.SwitchTo(CurrentChannel->Number()); @@ -773,7 +967,7 @@ static cString RecordingInUseMessage(int Reason, const char *RecordingId, cRecor return NULL; } -void cSVDRP::CmdDELR(const char *Option) +void cSVDRPServer::CmdDELR(const char *Option) { if (*Option) { if (isnumber(Option)) { @@ -800,7 +994,7 @@ void cSVDRP::CmdDELR(const char *Option) Reply(501, "Missing recording number"); } -void cSVDRP::CmdDELT(const char *Option) +void cSVDRPServer::CmdDELT(const char *Option) { if (*Option) { if (isnumber(Option)) { @@ -808,7 +1002,7 @@ void cSVDRP::CmdDELT(const char *Option) cTimer *timer = Timers.Get(strtol(Option, NULL, 10) - 1); if (timer) { if (!timer->Recording()) { - isyslog("SVDRP %s deleting timer %s", *connection, *timer->ToDescr()); + isyslog("SVDRP < %s deleting timer %s", *connection, *timer->ToDescr()); Timers.Del(timer); Timers.SetModified(); Reply(250, "Timer \"%s\" deleted", Option); @@ -829,7 +1023,7 @@ void cSVDRP::CmdDELT(const char *Option) Reply(501, "Missing timer number"); } -void cSVDRP::CmdEDIT(const char *Option) +void cSVDRPServer::CmdEDIT(const char *Option) { if (*Option) { if (isnumber(Option)) { @@ -855,7 +1049,7 @@ void cSVDRP::CmdEDIT(const char *Option) Reply(501, "Missing recording number"); } -void cSVDRP::CmdGRAB(const char *Option) +void cSVDRPServer::CmdGRAB(const char *Option) { const char *FileName = NULL; bool Jpeg = true; @@ -962,7 +1156,7 @@ void cSVDRP::CmdGRAB(const char *Option) int fd = open(FileName, O_WRONLY | O_CREAT | O_NOFOLLOW | O_TRUNC, DEFFILEMODE); if (fd >= 0) { if (safe_write(fd, Image, ImageSize) == ImageSize) { - dsyslog("SVDRP %s grabbed image to %s", *connection, FileName); + dsyslog("SVDRP < %s grabbed image to %s", *connection, FileName); Reply(250, "Grabbed image %s", Option); } else { @@ -992,7 +1186,7 @@ void cSVDRP::CmdGRAB(const char *Option) Reply(501, "Missing filename"); } -void cSVDRP::CmdHELP(const char *Option) +void cSVDRPServer::CmdHELP(const char *Option) { if (*Option) { const char *hp = GetHelpPage(Option, HelpPages); @@ -1020,7 +1214,7 @@ void cSVDRP::CmdHELP(const char *Option) Reply(214, "End of HELP info"); } -void cSVDRP::CmdHITK(const char *Option) +void cSVDRPServer::CmdHITK(const char *Option) { if (*Option) { if (!cRemote::Enabled()) { @@ -1059,7 +1253,7 @@ void cSVDRP::CmdHITK(const char *Option) } } -void cSVDRP::CmdLSTC(const char *Option) +void cSVDRPServer::CmdLSTC(const char *Option) { bool WithGroupSeps = strcasecmp(Option, ":groups") == 0; if (*Option && !WithGroupSeps) { @@ -1101,7 +1295,7 @@ void cSVDRP::CmdLSTC(const char *Option) Reply(550, "No channels defined"); } -void cSVDRP::CmdLSTE(const char *Option) +void cSVDRPServer::CmdLSTE(const char *Option) { cSchedulesLock SchedulesLock; const cSchedules *Schedules = cSchedules::Schedules(SchedulesLock); @@ -1184,7 +1378,7 @@ void cSVDRP::CmdLSTE(const char *Option) Reply(451, "Can't get EPG data"); } -void cSVDRP::CmdLSTR(const char *Option) +void cSVDRPServer::CmdLSTR(const char *Option) { int Number = 0; bool Path = false; @@ -1244,7 +1438,7 @@ void cSVDRP::CmdLSTR(const char *Option) Reply(550, "No recordings available"); } -void cSVDRP::CmdLSTT(const char *Option) +void cSVDRPServer::CmdLSTT(const char *Option) { int Number = 0; bool Id = false; @@ -1286,10 +1480,10 @@ void cSVDRP::CmdLSTT(const char *Option) Reply(550, "No timers defined"); } -void cSVDRP::CmdMESG(const char *Option) +void cSVDRPServer::CmdMESG(const char *Option) { if (*Option) { - isyslog("SVDRP %s message '%s'", *connection, Option); + isyslog("SVDRP < %s message '%s'", *connection, Option); Skins.QueueMessage(mtInfo, Option); Reply(250, "Message queued"); } @@ -1297,7 +1491,7 @@ void cSVDRP::CmdMESG(const char *Option) Reply(501, "Missing message"); } -void cSVDRP::CmdMODC(const char *Option) +void cSVDRPServer::CmdMODC(const char *Option) { if (*Option) { char *tail; @@ -1313,7 +1507,7 @@ void cSVDRP::CmdMODC(const char *Option) *channel = ch; Channels.ReNumber(); Channels.SetModified(true); - isyslog("SVDRP %s modifed channel %d %s", *connection, channel->Number(), *channel->ToText()); + isyslog("SVDRP < %s modifed channel %d %s", *connection, channel->Number(), *channel->ToText()); Reply(250, "%d %s", channel->Number(), *channel->ToText()); } else @@ -1335,7 +1529,7 @@ void cSVDRP::CmdMODC(const char *Option) Reply(501, "Missing channel settings"); } -void cSVDRP::CmdMODT(const char *Option) +void cSVDRPServer::CmdMODT(const char *Option) { if (*Option) { char *tail; @@ -1356,7 +1550,7 @@ void cSVDRP::CmdMODT(const char *Option) } *timer = t; Timers.SetModified(); - isyslog("SVDRP %s timer %s modified (%s)", *connection, *timer->ToDescr(), timer->HasFlags(tfActive) ? "active" : "inactive"); + isyslog("SVDRP < %s timer %s modified (%s)", *connection, *timer->ToDescr(), timer->HasFlags(tfActive) ? "active" : "inactive"); Reply(250, "%d %s", timer->Index() + 1, *timer->ToText()); } else @@ -1372,7 +1566,7 @@ void cSVDRP::CmdMODT(const char *Option) Reply(501, "Missing timer settings"); } -void cSVDRP::CmdMOVC(const char *Option) +void cSVDRPServer::CmdMOVC(const char *Option) { if (*Option) { if (!Channels.BeingEdited() && !Timers.BeingEdited()) { @@ -1400,7 +1594,7 @@ void cSVDRP::CmdMOVC(const char *Option) else cDevice::SetCurrentChannel(CurrentChannel); } - isyslog("SVDRP %s channel %d moved to %d", *connection, FromNumber, ToNumber); + isyslog("SVDRP < %s channel %d moved to %d", *connection, FromNumber, ToNumber); Reply(250,"Channel \"%d\" moved to \"%d\"", From, To); } else @@ -1425,7 +1619,7 @@ void cSVDRP::CmdMOVC(const char *Option) Reply(501, "Missing channel number"); } -void cSVDRP::CmdMOVR(const char *Option) +void cSVDRPServer::CmdMOVR(const char *Option) { if (*Option) { char *opt = strdup(Option); @@ -1465,7 +1659,7 @@ void cSVDRP::CmdMOVR(const char *Option) Reply(501, "Missing recording number"); } -void cSVDRP::CmdNEWC(const char *Option) +void cSVDRPServer::CmdNEWC(const char *Option) { if (*Option) { cChannel ch; @@ -1476,7 +1670,7 @@ void cSVDRP::CmdNEWC(const char *Option) Channels.Add(channel); Channels.ReNumber(); Channels.SetModified(true); - isyslog("SVDRP %s new channel %d %s", *connection, channel->Number(), *channel->ToText()); + isyslog("SVDRP < %s new channel %d %s", *connection, channel->Number(), *channel->ToText()); Reply(250, "%d %s", channel->Number(), *channel->ToText()); } else @@ -1489,14 +1683,14 @@ void cSVDRP::CmdNEWC(const char *Option) Reply(501, "Missing channel settings"); } -void cSVDRP::CmdNEWT(const char *Option) +void cSVDRPServer::CmdNEWT(const char *Option) { if (*Option) { cTimer *timer = new cTimer; if (timer->Parse(Option)) { Timers.Add(timer); Timers.SetModified(); - isyslog("SVDRP %s timer %s added", *connection, *timer->ToDescr()); + isyslog("SVDRP < %s timer %s added", *connection, *timer->ToDescr()); Reply(250, "%d %s", timer->Index() + 1, *timer->ToText()); return; } @@ -1508,7 +1702,7 @@ void cSVDRP::CmdNEWT(const char *Option) Reply(501, "Missing timer settings"); } -void cSVDRP::CmdNEXT(const char *Option) +void cSVDRPServer::CmdNEXT(const char *Option) { cTimer *t = Timers.GetNextActiveTimer(); if (t) { @@ -1527,7 +1721,12 @@ void cSVDRP::CmdNEXT(const char *Option) Reply(550, "No active timers"); } -void cSVDRP::CmdPLAY(const char *Option) +void cSVDRPServer::CmdPING(const char *Option) +{ + Reply(250, "%s is alive", HostName()); +} + +void cSVDRPServer::CmdPLAY(const char *Option) { if (*Option) { char *opt = strdup(Option); @@ -1570,7 +1769,7 @@ void cSVDRP::CmdPLAY(const char *Option) Reply(501, "Missing recording number"); } -void cSVDRP::CmdPLUG(const char *Option) +void cSVDRPServer::CmdPLUG(const char *Option) { if (*Option) { char *opt = strdup(Option); @@ -1641,7 +1840,7 @@ void cSVDRP::CmdPLUG(const char *Option) } } -void cSVDRP::CmdPUTE(const char *Option) +void cSVDRPServer::CmdPUTE(const char *Option) { if (*Option) { FILE *f = fopen(Option, "r"); @@ -1666,7 +1865,7 @@ void cSVDRP::CmdPUTE(const char *Option) } } -void cSVDRP::CmdREMO(const char *Option) +void cSVDRPServer::CmdREMO(const char *Option) { if (*Option) { if (!strcasecmp(Option, "ON")) { @@ -1684,13 +1883,13 @@ void cSVDRP::CmdREMO(const char *Option) Reply(250, "Remote control is %s", cRemote::Enabled() ? "enabled" : "disabled"); } -void cSVDRP::CmdSCAN(const char *Option) +void cSVDRPServer::CmdSCAN(const char *Option) { EITScanner.ForceScan(); Reply(250, "EPG scan triggered"); } -void cSVDRP::CmdSTAT(const char *Option) +void cSVDRPServer::CmdSTAT(const char *Option) { if (*Option) { if (strcasecmp(Option, "DISK") == 0) { @@ -1705,7 +1904,7 @@ void cSVDRP::CmdSTAT(const char *Option) Reply(501, "No option given"); } -void cSVDRP::CmdUPDT(const char *Option) +void cSVDRPServer::CmdUPDT(const char *Option) { if (*Option) { cTimer *timer = new cTimer; @@ -1716,11 +1915,11 @@ void cSVDRP::CmdUPDT(const char *Option) t->Parse(Option); delete timer; timer = t; - isyslog("SVDRP %s timer %s updated", *connection, *timer->ToDescr()); + isyslog("SVDRP < %s timer %s updated", *connection, *timer->ToDescr()); } else { Timers.Add(timer); - isyslog("SVDRP %s timer %s added", *connection, *timer->ToDescr()); + isyslog("SVDRP < %s timer %s added", *connection, *timer->ToDescr()); } Timers.SetModified(); Reply(250, "%d %s", timer->Index() + 1, *timer->ToText()); @@ -1737,13 +1936,13 @@ void cSVDRP::CmdUPDT(const char *Option) Reply(501, "Missing timer settings"); } -void cSVDRP::CmdUPDR(const char *Option) +void cSVDRPServer::CmdUPDR(const char *Option) { Recordings.Update(false); Reply(250, "Re-read of recordings directory triggered"); } -void cSVDRP::CmdVOLU(const char *Option) +void cSVDRPServer::CmdVOLU(const char *Option) { if (*Option) { if (isnumber(Option)) @@ -1767,7 +1966,7 @@ void cSVDRP::CmdVOLU(const char *Option) #define CMD(c) (strcasecmp(Cmd, c) == 0) -void cSVDRP::Execute(char *Cmd) +void cSVDRPServer::Execute(char *Cmd) { // handle PUTE data: if (PUTEhandler) { @@ -1808,6 +2007,7 @@ void cSVDRP::Execute(char *Cmd) else if (CMD("NEWC")) CmdNEWC(s); else if (CMD("NEWT")) CmdNEWT(s); else if (CMD("NEXT")) CmdNEXT(s); + else if (CMD("PING")) CmdPING(s); else if (CMD("PLAY")) CmdPLAY(s); else if (CMD("PLUG")) CmdPLUG(s); else if (CMD("PUTE")) CmdPUTE(s); @@ -1821,7 +2021,7 @@ void cSVDRP::Execute(char *Cmd) else Reply(500, "Command unrecognized: \"%s\"", Cmd); } -bool cSVDRP::Process(void) +bool cSVDRPServer::Process(void) { if (file.IsOpen()) { while (file.Ready(false)) { @@ -1863,7 +2063,7 @@ bool cSVDRP::Process(void) cmdLine = NewBuffer; } else { - esyslog("SVDRP %s ERROR: out of memory", *connection); + esyslog("SVDRP < %s ERROR: out of memory", *connection); Close(); break; } @@ -1874,12 +2074,12 @@ bool cSVDRP::Process(void) lastActivity = time(NULL); } else if (r <= 0) { - isyslog("SVDRP %s lost connection to client", *connection); + isyslog("SVDRP < %s lost connection to client", *connection); Close(); } } if (Setup.SVDRPTimeout && time(NULL) - lastActivity > Setup.SVDRPTimeout) { - isyslog("SVDRP %s timeout on connection", *connection); + isyslog("SVDRP < %s timeout on connection", *connection); Close(true, true); } } @@ -1891,70 +2091,426 @@ void SetSVDRPGrabImageDir(const char *GrabImageDir) grabImageDir = GrabImageDir; } -// --- cSVDRPHandler --------------------------------------------------------- +// --- cSVDRPClient ---------------------------------------------------------- -class cSVDRPHandler : public cThread { +class cSVDRPClient { private: + cIpAddress ipAddress; cSocket socket; - cVector<cSVDRP *> connections; + cString serverName; + int timeout; + cTimeMs pingTime; + cFile file; + void Close(void); +public: + cSVDRPClient(const char *Address, int Port, const char *ServerName, int Timeout); + ~cSVDRPClient(); + const char *ServerName(void) const { return serverName; } + const char *Connection(void) const { return ipAddress.Connection(); } + bool HasAddress(const char *Address, int Port) const; + bool Send(const char *Command); + bool Ping(void); + bool Process(cStringList *Response = NULL); + bool Execute(const char *Command, cStringList *Response); + }; + +cSVDRPClient::cSVDRPClient(const char *Address, int Port, const char *ServerName, int Timeout) +:ipAddress(Address, Port) +,socket(Port, true) +{ + serverName = ServerName; + timeout = Timeout * 1000 * 9 / 10; // ping after 90% of timeout + pingTime.Set(timeout); + if (socket.Connect(Address)) { + if (file.Open(socket.Socket())) + SVDRPClientPoller.Add(file, false); + } + dsyslog("SVDRP > %s client created for '%s'", ipAddress.Connection(), *serverName); + SendSVDRPDiscover(Address); +} + +cSVDRPClient::~cSVDRPClient() +{ + Close(); + dsyslog("SVDRP > %s client destroyed for '%s'", ipAddress.Connection(), *serverName); +} + +void cSVDRPClient::Close(void) +{ + if (file.IsOpen()) { + SVDRPClientPoller.Del(file, false); + file.Close(); + socket.Close(); + } +} + +bool cSVDRPClient::HasAddress(const char *Address, int Port) const +{ + return strcmp(ipAddress.Address(), Address) == 0 && ipAddress.Port() == Port; +} + +bool cSVDRPClient::Send(const char *Command) +{ + pingTime.Set(timeout); + dbgsvdrp("> %s: %s\n", *serverName, Command); + if (safe_write(file, Command, strlen(Command) + 1) < 0) { + LOG_ERROR; + return false; + } + return true; +} + +bool cSVDRPClient::Ping(void) +{ + cSVDRPCommand Cmd(serverName, "PING"); + if (Cmd.Execute()) + return Cmd.Response(0) && atoi(Cmd.Response(0)) == 250; + return false; +} + +bool cSVDRPClient::Process(cStringList *Response) +{ + if (file.IsOpen()) { + char input[BUFSIZ]; + int numChars = 0; +#define SVDRPResonseTimeout 5000 // ms + cTimeMs Timeout(SVDRPResonseTimeout); + for (;;) { + if (file.Ready(false)) { + unsigned char c; + int r = safe_read(file, &c, 1); + if (r > 0) { + if (c == '\n' || c == 0x00) { + // strip trailing whitespace: + while (numChars > 0 && strchr(" \t\r\n", input[numChars - 1])) + input[--numChars] = 0; + // make sure the string is terminated: + input[numChars] = 0; + dbgsvdrp("< %s: %s\n", *serverName, input); + if (Response) { + Response->Append(strdup(input)); + if (input[3] != '-') // no more lines will follow + break; + } + else { + switch (atoi(input)) { + case 220: if (numChars > 4) { + char *n = input + 4; + if (char *t = strchr(n, ' ')) { + *t = 0; + if (strcmp(n, serverName) != 0) { + serverName = n; + dsyslog("SVDRP < %s remote server name is '%s'", ipAddress.Connection(), *serverName); + } + } + } + break; + case 221: dsyslog("SVDRP < %s remote server closed connection to '%s'", ipAddress.Connection(), *serverName); + Close(); + break; + } + } + numChars = 0; + } + else { + if (numChars >= int(sizeof(input))) { + esyslog("SVDRP < %s ERROR: out of memory", ipAddress.Connection()); + Close(); + break; + } + input[numChars++] = c; + input[numChars] = 0; + } + Timeout.Set(SVDRPResonseTimeout); + } + else if (r <= 0) { + isyslog("SVDRP < %s lost connection to remote server '%s'", ipAddress.Connection(), *serverName); + Close(); + } + } + else if (!Response) + break; + else if (Timeout.TimedOut()) { + esyslog("SVDRP < %s timeout while waiting for response from '%s'", ipAddress.Connection(), *serverName); + return false; + } + } + if (pingTime.TimedOut()) + Ping(); + } + return file.IsOpen(); +} + +bool cSVDRPClient::Execute(const char *Command, cStringList *Response) +{ + Response->Clear(); + return Send(Command) && Process(Response); +} + +// --- cSVDRPServerHandler --------------------------------------------------- + +class cSVDRPServerHandler : public cThread { +private: + cMutex mutex; + bool ready; + cSocket tcpSocket; + cVector<cSVDRPServer *> serverConnections; + void HandleServerConnection(void); void ProcessConnections(void); protected: virtual void Action(void); public: - cSVDRPHandler(int Port); - virtual ~cSVDRPHandler(); + cSVDRPServerHandler(int TcpPort); + virtual ~cSVDRPServerHandler(); + void WaitUntilReady(void); }; -cSVDRPHandler::cSVDRPHandler(int Port) -:cThread("SVDRP handler", true) -,socket(Port) +cSVDRPServerHandler::cSVDRPServerHandler(int TcpPort) +:cThread("SVDRP server handler", true) +,tcpSocket(TcpPort, true) { + ready = false; } -cSVDRPHandler::~cSVDRPHandler() +cSVDRPServerHandler::~cSVDRPServerHandler() { Cancel(3); + for (int i = 0; i < serverConnections.Size(); i++) + delete serverConnections[i]; } -void cSVDRPHandler::ProcessConnections(void) +void cSVDRPServerHandler::WaitUntilReady(void) { - for (int i = 0; i < connections.Size(); i++) { - if (connections[i]) { - if (!connections[i]->Process()) { - delete connections[i]; - connections.Remove(i); - i--; - } + cTimeMs Timeout(3000); + while (!ready && !Timeout.TimedOut()) + cCondWait::SleepMs(10); +} + +void cSVDRPServerHandler::ProcessConnections(void) +{ + cMutexLock MutexLock(&mutex); + for (int i = 0; i < serverConnections.Size(); i++) { + if (!serverConnections[i]->Process()) { + delete serverConnections[i]; + serverConnections.Remove(i); + i--; } } } -void cSVDRPHandler::Action(void) +void cSVDRPServerHandler::HandleServerConnection(void) +{ + int NewSocket = tcpSocket.Accept(); + if (NewSocket >= 0) + serverConnections.Append(new cSVDRPServer(NewSocket, tcpSocket.LastIpAddress()->Connection())); +} + +void cSVDRPServerHandler::Action(void) { - if (socket.Open()) { + if (tcpSocket.Listen()) { + SVDRPServerPoller.Add(tcpSocket.Socket(), false); + ready = true; while (Running()) { - cFile::AnyFileReady(socket.Socket(), 1000); - int NewSocket = socket.Accept(); - if (NewSocket >= 0) - connections.Append(new cSVDRP(NewSocket, socket.LastAcceptedConnection())); + SVDRPServerPoller.Poll(1000); + cMutexLock MutexLock(&mutex); + HandleServerConnection(); ProcessConnections(); } - socket.Close(); + SVDRPServerPoller.Del(tcpSocket.Socket(), false); + tcpSocket.Close(); + } +} + +// --- cSVDRPClientHandler --------------------------------------------------- + +class cSVDRPClientHandler : public cThread { +private: + cMutex mutex; + cSocket udpSocket; + int tcpPort; + cVector<cSVDRPClient *> clientConnections; + void HandleClientConnection(void); + void ProcessConnections(void); + cSVDRPClient *GetClientForServer(const char *ServerName); +protected: + virtual void Action(void); +public: + cSVDRPClientHandler(int UdpPort, int TcpPort); + virtual ~cSVDRPClientHandler(); + void SendDiscover(const char *Address = NULL); + bool Execute(const char *ServerName, const char *Command, cStringList *Response); + bool GetServerNames(cStringList *ServerNames); + }; + +cSVDRPClientHandler::cSVDRPClientHandler(int UdpPort, int TcpPort) +:cThread("SVDRP client handler", true) +,udpSocket(UdpPort, false) +{ + tcpPort = TcpPort; +} + +cSVDRPClientHandler::~cSVDRPClientHandler() +{ + Cancel(3); + for (int i = 0; i < clientConnections.Size(); i++) + delete clientConnections[i]; +} + +cSVDRPClient *cSVDRPClientHandler::GetClientForServer(const char *ServerName) +{ + for (int i = 0; i < clientConnections.Size(); i++) { + if (strcmp(clientConnections[i]->ServerName(), ServerName) == 0) + return clientConnections[i]; + } + return NULL; +} + +void cSVDRPClientHandler::SendDiscover(const char *Address) +{ + cMutexLock MutexLock(&mutex); + cString Dgram = cString::sprintf("SVDRP:discover name:%s port:%d vdrversion:%d apiversion:%d timeout:%d", HostName(), tcpPort, VDRVERSNUM, APIVERSNUM, Setup.SVDRPTimeout); + udpSocket.SendDgram(Dgram, udpSocket.Port(), Address); +} + +void cSVDRPClientHandler::ProcessConnections(void) +{ + cMutexLock MutexLock(&mutex); + for (int i = 0; i < clientConnections.Size(); i++) { + if (!clientConnections[i]->Process()) { + delete clientConnections[i]; + clientConnections.Remove(i); + i--; + } + } +} + +void cSVDRPClientHandler::HandleClientConnection(void) +{ + cString NewDiscover = udpSocket.Discover(); + if (*NewDiscover) { + cString p = strgetval(NewDiscover, "port", ':'); + if (*p) { + int Port = atoi(p); + for (int i = 0; i < clientConnections.Size(); i++) { + if (clientConnections[i]->HasAddress(udpSocket.LastIpAddress()->Address(), Port)) { + dsyslog("SVDRP < %s connection to '%s' confirmed", clientConnections[i]->Connection(), clientConnections[i]->ServerName()); + return; + } + } + cString ServerName = strgetval(NewDiscover, "name", ':'); + if (*ServerName) { + cString t = strgetval(NewDiscover, "timeout", ':'); + if (*t) { + int Timeout = atoi(t); + if (Timeout > 10) // don't let it get too small + clientConnections.Append(new cSVDRPClient(udpSocket.LastIpAddress()->Address(), Port, ServerName, Timeout)); + else + esyslog("SVDRP < %s ERROR: invalid timeout (%d)", udpSocket.LastIpAddress()->Connection(), Timeout); + } + else + esyslog("SVDRP < %s ERROR: missing timeout", udpSocket.LastIpAddress()->Connection()); + } + else + esyslog("SVDRP < %s ERROR: missing server name", udpSocket.LastIpAddress()->Connection()); + } + else + esyslog("SVDRP < %s ERROR: missing port number", udpSocket.LastIpAddress()->Connection()); } } -static cSVDRPHandler *SVDRPHandler = NULL; +void cSVDRPClientHandler::Action(void) +{ + if (udpSocket.Listen()) { + SVDRPClientPoller.Add(udpSocket.Socket(), false); + SendDiscover(); + while (Running()) { + SVDRPClientPoller.Poll(1000); + cMutexLock MutexLock(&mutex); + HandleClientConnection(); + ProcessConnections(); + } + SVDRPClientPoller.Del(udpSocket.Socket(), false); + udpSocket.Close(); + } +} -void StartSVDRPHandler(int Port) +bool cSVDRPClientHandler::Execute(const char *ServerName, const char *Command, cStringList *Response) { - if (Port && !SVDRPHandler) { - SVDRPHandler = new cSVDRPHandler(Port); - SVDRPHandler->Start(); + cMutexLock MutexLock(&mutex); + if (cSVDRPClient *Client = GetClientForServer(ServerName)) + return Client->Execute(Command, Response); + return false; +} + +bool cSVDRPClientHandler::GetServerNames(cStringList *ServerNames) +{ + cMutexLock MutexLock(&mutex); + ServerNames->Clear(); + for (int i = 0; i < clientConnections.Size(); i++) + ServerNames->Append(strdup(clientConnections[i]->ServerName())); + return ServerNames->Size() > 0; +} + +// --- SVDRP Handler --------------------------------------------------------- + +static cMutex SVDRPHandlerMutex; +static cSVDRPServerHandler *SVDRPServerHandler = NULL; +static cSVDRPClientHandler *SVDRPClientHandler = NULL; + +void StartSVDRPHandler(int TcpPort, int UdpPort) +{ + cMutexLock MutexLock(&SVDRPHandlerMutex); + if (TcpPort && !SVDRPServerHandler) { + SVDRPServerHandler = new cSVDRPServerHandler(TcpPort); + SVDRPServerHandler->Start(); + SVDRPServerHandler->WaitUntilReady(); + } + if (UdpPort && !SVDRPClientHandler) { + SVDRPClientHandler = new cSVDRPClientHandler(UdpPort, TcpPort); + SVDRPClientHandler->Start(); } } void StopSVDRPHandler(void) { - delete SVDRPHandler; - SVDRPHandler = NULL; + cMutexLock MutexLock(&SVDRPHandlerMutex); + delete SVDRPServerHandler; + SVDRPServerHandler = NULL; + delete SVDRPClientHandler; + SVDRPClientHandler = NULL; +} + +void SendSVDRPDiscover(const char *Address) +{ + cMutexLock MutexLock(&SVDRPHandlerMutex); + if (SVDRPClientHandler) + SVDRPClientHandler->SendDiscover(Address); +} + +bool GetSVDRPServerNames(cStringList *ServerNames) +{ + cMutexLock MutexLock(&SVDRPHandlerMutex); + if (SVDRPClientHandler) + return SVDRPClientHandler->GetServerNames(ServerNames); + return false; +} + +// --- cSVDRPCommand --------------------------------------------------------- + +cSVDRPCommand::cSVDRPCommand(const char *ServerName, const char *Command) +{ + serverName = ServerName; + command = Command; +} + +cSVDRPCommand::~cSVDRPCommand() +{ +} + +bool cSVDRPCommand::Execute(void) +{ + cMutexLock MutexLock(&SVDRPHandlerMutex); + if (SVDRPClientHandler) + return SVDRPClientHandler->Execute(serverName, command, &response); + return false; } |