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/*
* $Id: connection.c,v 1.3 2005/03/24 21:31:38 lordjaxom Exp $
*/
#include "server/connection.h"
#include "server/setup.h"
#include "server/suspend.h"
#include "common.h"
#include <vdr/tools.h>
#include <string.h>
#include <errno.h>
cServerConnection::cServerConnection(const char *Protocol) {
m_RdBytes = 0;
m_WrBytes = 0;
m_WrOffs = 0;
m_DeferClose = false;
m_Protocol = Protocol;
}
cServerConnection::~cServerConnection() {
}
bool cServerConnection::CanAct(const cTBSelect &Select) {
if (Select.CanRead(*this)) {
int b;
if ((b = Read(m_RdBuf + m_RdBytes, sizeof(m_RdBuf) - m_RdBytes - 1)) < 0) {
esyslog("Streamdev: Read from client (%s) %s:%d failed: %s", m_Protocol,
RemoteIp().c_str(), RemotePort(), strerror(errno));
return false;
}
if (b == 0) {
isyslog("Streamdev: Client (%s) %s:%d closed connection", m_Protocol,
RemoteIp().c_str(), RemotePort());
return false;
}
m_RdBytes += b;
m_RdBuf[m_RdBytes] = '\0';
return ParseBuffer();
}
if (Select.CanWrite(*this)) {
int b;
if ((b = Write(m_WrBuf + m_WrOffs, m_WrBytes - m_WrOffs)) < 0) {
esyslog("Streamdev: Write to client (%s) %s:%d failed: %s", m_Protocol,
RemoteIp().c_str(), RemotePort(), strerror(errno));
return false;
}
m_WrOffs += b;
if (m_WrOffs == m_WrBytes) {
m_WrBytes = 0;
m_WrOffs = 0;
}
}
if (m_WrBytes == 0) {
if (m_DeferClose)
return false;
Flushed();
}
return true;
}
bool cServerConnection::ParseBuffer(void) {
char *ep;
bool res;
while ((ep = strchr(m_RdBuf, '\012')) != NULL) {
*ep = '\0';
if (ep > m_RdBuf && *(ep-1) == '\015')
*(ep-1) = '\0';
Dprintf("IN: |%s|\n", m_RdBuf);
res = Command(m_RdBuf);
m_RdBytes -= ++ep - m_RdBuf;
if (m_RdBytes > 0)
memmove(m_RdBuf, ep, m_RdBytes);
if (res == false)
return false;
}
return true;
}
bool cServerConnection::Respond(const std::string &Message) {
if (m_WrBytes + Message.size() + 2 > sizeof(m_WrBuf)) {
esyslog("Streamdev: Output buffer overflow (%s) for %s:%d", m_Protocol,
RemoteIp().c_str(), RemotePort());
return false;
}
Dprintf("OUT: |%s|\n", Message.c_str());
memcpy(m_WrBuf + m_WrBytes, Message.c_str(), Message.size());
m_WrBytes += Message.size();
m_WrBuf[m_WrBytes++] = '\015';
m_WrBuf[m_WrBytes++] = '\012';
return true;
}
cDevice *cServerConnection::GetDevice(const cChannel *Channel, int Priority) {
cDevice *device = NULL;
/*Dprintf("+ Statistics:\n");
Dprintf("+ Current Channel: %d\n", cDevice::CurrentChannel());
Dprintf("+ Current Device: %d\n", cDevice::ActualDevice()->CardIndex());
Dprintf("+ Transfer Mode: %s\n", cDevice::ActualDevice()
== cDevice::PrimaryDevice() ? "false" : "true");
Dprintf("+ Replaying: %s\n", cDevice::PrimaryDevice()->Replaying() ? "true"
: "false");*/
Dprintf(" * GetDevice(const cChannel*, int)\n");
Dprintf(" * -------------------------------\n");
device = cDevice::GetDevice(Channel, Priority);
Dprintf(" * Found following device: %p (%d)\n", device,
device ? device->CardIndex() + 1 : 0);
if (device == cDevice::ActualDevice())
Dprintf(" * is actual device\n");
if (!cSuspendCtl::IsActive() && StreamdevServerSetup.SuspendMode != smAlways)
Dprintf(" * NOT suspended\n");
if (!device || (device == cDevice::ActualDevice()
&& !cSuspendCtl::IsActive()
&& StreamdevServerSetup.SuspendMode != smAlways)) {
// mustn't switch actual device
// maybe a device would be free if THIS connection did turn off its streams?
Dprintf(" * trying again...\n");
const cChannel *current = Channels.GetByNumber(cDevice::CurrentChannel());
//isyslog("streamdev-server: Detaching current receiver");
//Detach(); XXX+
device = cDevice::GetDevice(Channel, Priority);
//Attach(); XXX+
Dprintf(" * Found following device: %p (%d)\n", device,
device ? device->CardIndex() + 1 : 0);
if (device == cDevice::ActualDevice())
Dprintf(" * is actual device\n");
if (!cSuspendCtl::IsActive()
&& StreamdevServerSetup.SuspendMode != smAlways)
Dprintf(" * NOT suspended\n");
if (current && !TRANSPONDER(Channel, current))
Dprintf(" * NOT same transponder\n");
if (device && (device == cDevice::ActualDevice()
&& !cSuspendCtl::IsActive()
&& StreamdevServerSetup.SuspendMode != smAlways
&& current != NULL
&& !TRANSPONDER(Channel, current))) {
// now we would have to switch away live tv...let's see if live tv
// can be handled by another device
cDevice *newdev = NULL;
for (int i = 0; i < cDevice::NumDevices(); ++i) {
cDevice *dev = cDevice::GetDevice(i);
if (dev->ProvidesChannel(current, 0) && dev != device) {
newdev = dev;
break;
}
}
Dprintf(" * Found device for live tv: %p (%d)\n", newdev,
newdev ? newdev->CardIndex() + 1 : 0);
if (newdev == NULL || newdev == device)
// no suitable device to continue live TV, giving up...
device = NULL;
else
newdev->SwitchChannel(current, true);
}
}
return device;
}
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