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/*
* $Id: connection.c,v 1.16 2010/08/03 10:51:53 schmirl Exp $
*/
#include "server/connection.h"
#include "server/setup.h"
#include "server/suspend.h"
#include "common.h"
#include <vdr/tools.h>
#include <vdr/thread.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
cServerConnection::cServerConnection(const char *Protocol, int Type):
cTBSocket(Type),
m_Protocol(Protocol),
m_DeferClose(false),
m_Pending(false),
m_ReadBytes(0),
m_WriteBytes(0),
m_WriteIndex(0),
m_Streamer(NULL)
{
}
cServerConnection::~cServerConnection()
{
delete(m_Streamer);
}
const cChannel* cServerConnection::ChannelFromString(const char *String, int *Apid, int *Dpid) {
const cChannel *channel = NULL;
char *string = strdup(String);
char *ptr, *end;
int apididx = 0;
if ((ptr = strrchr(string, '+')) != NULL) {
*(ptr++) = '\0';
apididx = strtoul(ptr, &end, 10);
Dprintf("found apididx: %d\n", apididx);
}
if (isnumber(string)) {
int temp = strtol(String, NULL, 10);
if (temp == 0)
temp = cDevice::CurrentChannel();
#if APIVERSNUM >= 20300
LOCK_CHANNELS_READ;
if (temp >= 1 && temp <= Channels->MaxNumber())
channel = Channels->GetByNumber(temp);
#else
if (temp >= 1 && temp <= Channels.MaxNumber())
channel = Channels.GetByNumber(temp);
#endif
} else {
#if APIVERSNUM >= 20300
LOCK_CHANNELS_READ;
channel = Channels->GetByChannelID(tChannelID::FromString(string));
#else
channel = Channels.GetByChannelID(tChannelID::FromString(string));
#endif
if (channel == NULL) {
int i = 1;
#if APIVERSNUM >= 20300
while ((channel = Channels->GetByNumber(i, 1)) != NULL) {
#else
while ((channel = Channels.GetByNumber(i, 1)) != NULL) {
#endif
if (String == channel->Name())
break;
i = channel->Number() + 1;
}
}
}
if (channel != NULL && apididx > 0) {
int apid = 0, dpid = 0;
int index = 1;
for (int i = 0; channel->Apid(i) != 0; ++i, ++index) {
if (index == apididx) {
apid = channel->Apid(i);
break;
}
}
if (apid == 0) {
for (int i = 0; channel->Dpid(i) != 0; ++i, ++index) {
if (index == apididx) {
dpid = channel->Dpid(i);
break;
}
}
}
if (Apid != NULL)
*Apid = apid;
if (Dpid != NULL)
*Dpid = dpid;
}
free(string);
return channel;
}
bool cServerConnection::Read(void)
{
int b;
if ((b = cTBSocket::Read(m_ReadBuffer + m_ReadBytes,
sizeof(m_ReadBuffer) - m_ReadBytes - 1)) < 0) {
esyslog("ERROR: read from client (%s) %s:%d failed: %m",
m_Protocol, RemoteIp().c_str(), RemotePort());
return false;
}
if (b == 0) {
isyslog("client (%s) %s:%d has closed connection",
m_Protocol, RemoteIp().c_str(), RemotePort());
return false;
}
m_ReadBytes += b;
m_ReadBuffer[m_ReadBytes] = '\0';
char *end;
bool result = true;
while ((end = strchr(m_ReadBuffer, '\012')) != NULL) {
*end = '\0';
if (end > m_ReadBuffer && *(end - 1) == '\015')
*(end - 1) = '\0';
if (!Command(m_ReadBuffer))
return false;
m_ReadBytes -= ++end - m_ReadBuffer;
if (m_ReadBytes > 0)
memmove(m_ReadBuffer, end, m_ReadBytes);
}
if (m_ReadBytes == sizeof(m_ReadBuffer) - 1) {
esyslog("ERROR: streamdev: input buffer overflow (%s) for %s:%d",
m_Protocol, RemoteIp().c_str(), RemotePort());
return false;
}
return result;
}
bool cServerConnection::Write(void)
{
int b;
if ((b = cTBSocket::Write(m_WriteBuffer + m_WriteIndex,
m_WriteBytes - m_WriteIndex)) < 0) {
esyslog("ERROR: streamdev: write to client (%s) %s:%d failed: %m",
m_Protocol, RemoteIp().c_str(), RemotePort());
return false;
}
m_WriteIndex += b;
if (m_WriteIndex == m_WriteBytes) {
m_WriteIndex = 0;
m_WriteBytes = 0;
if (m_Pending)
Command(NULL);
if (m_DeferClose)
return false;
Flushed();
}
return true;
}
bool cServerConnection::Respond(const char *Message, bool Last, ...)
{
char *buffer;
int length;
va_list ap;
va_start(ap, Last);
length = vasprintf(&buffer, Message, ap);
va_end(ap);
if (length < 0) {
esyslog("ERROR: streamdev: buffer allocation failed (%s) for %s:%d",
m_Protocol, RemoteIp().c_str(), RemotePort());
return false;
}
if (m_WriteBytes + length + 2 > sizeof(m_WriteBuffer)) {
esyslog("ERROR: streamdev: output buffer overflow (%s) for %s:%d",
m_Protocol, RemoteIp().c_str(), RemotePort());
free(buffer);
return false;
}
Dprintf("OUT: |%s|\n", buffer);
memcpy(m_WriteBuffer + m_WriteBytes, buffer, length);
free(buffer);
m_WriteBytes += length;
m_WriteBuffer[m_WriteBytes++] = '\015';
m_WriteBuffer[m_WriteBytes++] = '\012';
m_Pending = !Last;
return true;
}
bool cServerConnection::Close()
{
if (IsOpen())
isyslog("streamdev-server: closing %s connection to %s:%d", Protocol(), RemoteIp().c_str(), RemotePort());
return cTBSocket::Close();
}
cString cServerConnection::ToText(char Delimiter) const
{
return cString::sprintf("%s%c%s:%d", Protocol(), Delimiter, RemoteIp().c_str(), RemotePort());
}
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