mirror of
https://github.com/VDR4Arch/vdr.git
synced 2023-10-10 13:36:52 +02:00
Fixed a possible race condition with CONN vs. LSTT
This commit is contained in:
Klaus Schmidinger
parent
af3cb1c9c3
commit
043929d850
38
svdrp.c
38
svdrp.c
@ -10,7 +10,7 @@
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* and interact with the Video Disk Recorder - or write a full featured
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* graphical interface that sits on top of an SVDRP connection.
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*
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* $Id: svdrp.c 4.33 2018/03/04 14:15:07 kls Exp $
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* $Id: svdrp.c 4.34 2018/03/17 10:06:54 kls Exp $
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*/
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#include "svdrp.h"
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@ -47,6 +47,13 @@ static bool DumpSVDRPDataTransfer = false;
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static int SVDRPTcpPort = 0;
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static int SVDRPUdpPort = 0;
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enum eSvdrpFetchFlags {
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sffNone = 0b00000000,
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sffConn = 0b00000001,
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sffPing = 0b00000010,
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sffTimers = 0b00000100,
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};
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// --- cIpAddress ------------------------------------------------------------
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class cIpAddress {
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@ -327,8 +334,8 @@ public:
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bool Process(cStringList *Response = NULL);
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bool Execute(const char *Command, cStringList *Response = NULL);
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bool Connected(void) const { return connected; }
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void SetFetchFlag(eSvdrpFetchFlags Flag);
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bool HasFetchFlag(eSvdrpFetchFlags Flag);
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void SetFetchFlag(int Flag);
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bool HasFetchFlag(int Flag);
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bool GetRemoteTimers(cStringList &Response);
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};
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@ -415,8 +422,7 @@ bool cSVDRPClient::Process(cStringList *Response)
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serverName = n;
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dsyslog("SVDRP %s < %s remote server name is '%s'", Setup.SVDRPHostName, serverIpAddress.Connection(), *serverName);
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}
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Execute(cString::sprintf("CONN name:%s port:%d vdrversion:%d apiversion:%d timeout:%d", Setup.SVDRPHostName, SVDRPTcpPort, VDRVERSNUM, APIVERSNUM, Setup.SVDRPTimeout));
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SetFetchFlag(sffTimers);
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SetFetchFlag(sffConn | sffTimers);
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connected = true;
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}
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}
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@ -456,7 +462,7 @@ bool cSVDRPClient::Process(cStringList *Response)
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break; // we read all or nothing!
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}
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if (pingTime.TimedOut())
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Execute("PING");
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SetFetchFlag(sffPing);
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}
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return file.IsOpen();
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}
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@ -468,12 +474,12 @@ bool cSVDRPClient::Execute(const char *Command, cStringList *Response)
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return Send(Command) && Process(Response);
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}
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void cSVDRPClient::SetFetchFlag(eSvdrpFetchFlags Flags)
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void cSVDRPClient::SetFetchFlag(int Flags)
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{
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fetchFlags |= Flags;
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}
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bool cSVDRPClient::HasFetchFlag(eSvdrpFetchFlags Flag)
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bool cSVDRPClient::HasFetchFlag(int Flag)
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{
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bool Result = (fetchFlags & Flag);
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fetchFlags &= ~Flag;
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@ -588,7 +594,7 @@ public:
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void Unlock(void) { mutex.Unlock(); }
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void AddClient(cSVDRPServerParams &ServerParams, const char *IpAddress);
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bool Execute(const char *ServerName, const char *Command, cStringList *Response = NULL);
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bool GetServerNames(cStringList *ServerNames, eSvdrpFetchFlags FetchFlags = sffNone);
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bool GetServerNames(cStringList *ServerNames);
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bool TriggerFetchingTimers(const char *ServerName);
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};
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@ -635,6 +641,10 @@ void cSVDRPClientHandler::ProcessConnections(void)
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for (int i = 0; i < clientConnections.Size(); i++) {
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cSVDRPClient *Client = clientConnections[i];
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if (Client->Process()) {
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if (Client->HasFetchFlag(sffConn))
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Client->Execute(cString::sprintf("CONN name:%s port:%d vdrversion:%d apiversion:%d timeout:%d", Setup.SVDRPHostName, SVDRPTcpPort, VDRVERSNUM, APIVERSNUM, Setup.SVDRPTimeout));
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if (Client->HasFetchFlag(sffPing))
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Client->Execute("PING");
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if (Client->HasFetchFlag(sffTimers)) {
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cStringList RemoteTimers;
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if (Client->GetRemoteTimers(RemoteTimers)) {
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@ -712,17 +722,15 @@ bool cSVDRPClientHandler::Execute(const char *ServerName, const char *Command, c
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return false;
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}
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bool cSVDRPClientHandler::GetServerNames(cStringList *ServerNames, eSvdrpFetchFlags FetchFlag)
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bool cSVDRPClientHandler::GetServerNames(cStringList *ServerNames)
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{
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cMutexLock MutexLock(&mutex);
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ServerNames->Clear();
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for (int i = 0; i < clientConnections.Size(); i++) {
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cSVDRPClient *Client = clientConnections[i];
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if (Client->Connected()) {
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if (FetchFlag == sffNone || Client->HasFetchFlag(FetchFlag))
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if (Client->Connected())
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ServerNames->Append(strdup(Client->ServerName()));
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}
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}
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return ServerNames->Size() > 0;
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}
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@ -2744,13 +2752,13 @@ void StopSVDRPHandler(void)
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SVDRPServerHandler = NULL;
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}
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bool GetSVDRPServerNames(cStringList *ServerNames, eSvdrpFetchFlags FetchFlag)
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bool GetSVDRPServerNames(cStringList *ServerNames)
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{
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bool Result = false;
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cMutexLock MutexLock(&SVDRPHandlerMutex);
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if (SVDRPClientHandler) {
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SVDRPClientHandler->Lock();
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Result = SVDRPClientHandler->GetServerNames(ServerNames, FetchFlag);
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Result = SVDRPClientHandler->GetServerNames(ServerNames);
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SVDRPClientHandler->Unlock();
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}
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return Result;
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12
svdrp.h
12
svdrp.h
@ -4,7 +4,7 @@
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: svdrp.h 4.10 2018/03/04 12:26:17 kls Exp $
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* $Id: svdrp.h 4.11 2018/03/15 16:30:29 kls Exp $
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*/
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#ifndef __SVDRP_H
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@ -19,11 +19,6 @@ enum eSvdrpPeerModes {
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spmOnly = 2,
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};
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enum eSvdrpFetchFlags {
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sffNone = 0b0000,
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sffTimers = 0b0001,
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};
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extern cStateKey StateKeySVDRPRemoteTimersPoll;
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///< Controls whether a change to the local list of timers needs to result in
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///< sending a POLL to the remote clients.
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@ -32,13 +27,10 @@ void SetSVDRPPorts(int TcpPort, int UdpPort);
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void SetSVDRPGrabImageDir(const char *GrabImageDir);
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void StartSVDRPHandler(void);
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void StopSVDRPHandler(void);
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bool GetSVDRPServerNames(cStringList *ServerNames, eSvdrpFetchFlags FetchFlag = sffNone);
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bool GetSVDRPServerNames(cStringList *ServerNames);
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///< Gets a list of all available VDRs this VDR is connected to via SVDRP,
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///< and stores it in the given ServerNames list. The list is cleared
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///< before getting the server names.
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///< If FetchFlag is given, only the server names for which the local
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///< client has this flag set will be returned, and the client's flag
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///< will be cleared.
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///< Returns true if the resulting list is not empty.
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bool ExecSVDRPCommand(const char *ServerName, const char *Command, cStringList *Response = NULL);
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///< Sends the given SVDRP Command string to the remote VDR identified
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16
timers.c
16
timers.c
@ -4,7 +4,7 @@
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: timers.c 4.17 2018/03/11 13:03:23 kls Exp $
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* $Id: timers.c 4.18 2018/03/17 10:07:19 kls Exp $
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*/
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#include "timers.h"
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@ -952,8 +952,14 @@ bool cTimers::StoreRemoteTimers(const char *ServerName, const cStringList *Remot
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else // processed all right entries
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DelTimer = nl;
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}
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else if (ir < sr) // still have right entries
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else if (ir < sr) { // still have right entries
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AddTimer = atoi((*RemoteTimers)[ir]);
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if (!AddTimer) {
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esyslog("ERROR: %s: error in timer settings: %s", ServerName, (*RemoteTimers)[ir]);
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ir++;
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continue; // let's see if we can process the rest
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}
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}
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else // processed all left and right entries
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break;
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if (AddTimer && DelTimer) {
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@ -971,7 +977,7 @@ bool cTimers::StoreRemoteTimers(const char *ServerName, const cStringList *Remot
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Result = true;
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}
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else
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esyslog("ERROR: %s: error in timer settings: %s", ServerName, v);
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esyslog("ERROR: %d@%s: error in timer settings: %s", DelTimer, ServerName, v);
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}
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}
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else // identical timer, nothing to do
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@ -1003,6 +1009,10 @@ bool cTimers::StoreRemoteTimers(const char *ServerName, const cStringList *Remot
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}
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il++;
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}
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else {
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esyslog("ERROR: oops while storing remote timers!");
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break; // let's not get stuck here!
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}
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}
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return Result;
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}
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