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#include "tools/socket.h"
#include "tools/select.h"
#include <vdr/tools.h>
#include <string.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
// default class: best effort
#define DSCP_BE 0
// gold class (video): assured forwarding 4 with lowest drop precedence
#define DSCP_AF41 34 << 2
// premium class (voip): expedited forwarding
#define DSCP_EF 46 << 2
// actual DSCP value used
#define STREAMDEV_DSCP DSCP_AF41
cTBSocket::cTBSocket(int Type, int Protocol) {
memset(&m_LocalAddr, 0, sizeof(m_LocalAddr));
memset(&m_RemoteAddr, 0, sizeof(m_RemoteAddr));
m_Type = Type;
m_Protocol = Protocol;
}
cTBSocket::~cTBSocket() {
if (IsOpen()) Close();
}
bool cTBSocket::Connect(const std::string &Host, unsigned int Port, unsigned int TimeoutMs) {
socklen_t len;
int socket;
if (IsOpen()) Close();
if ((socket = ::socket(PF_INET, m_Type, m_Protocol)) == -1)
return false;
m_LocalAddr.sin_family = AF_INET;
m_LocalAddr.sin_port = 0;
m_LocalAddr.sin_addr.s_addr = INADDR_ANY;
if (::bind(socket, (struct sockaddr*)&m_LocalAddr, sizeof(m_LocalAddr))
== -1) {
::close(socket);
return false;
}
if (TimeoutMs > 0 && ::fcntl(socket, F_SETFL, O_NONBLOCK) == -1) {
::close(socket);
return false;
}
m_RemoteAddr.sin_family = AF_INET;
m_RemoteAddr.sin_port = htons(Port);
m_RemoteAddr.sin_addr.s_addr = inet_addr(Host.c_str());
if (::connect(socket, (struct sockaddr*)&m_RemoteAddr, sizeof(m_RemoteAddr)) == -1) {
if (TimeoutMs > 0 && errno == EINPROGRESS) {
int so_error;
socklen_t len = sizeof(so_error);
cTBSelect select;
select.Add(socket);
if (select.Select(TimeoutMs) == -1 ||
::getsockopt(socket, SOL_SOCKET, SO_ERROR, &so_error, &len) == -1) {
::close(socket);
return false;
}
if (so_error) {
errno = so_error;
::close(socket);
return false;
}
}
else {
::close(socket);
return false;
}
}
if (m_Type == SOCK_STREAM) {
len = sizeof(struct sockaddr_in);
if (::getpeername(socket, (struct sockaddr*)&m_RemoteAddr, &len) == -1) {
::close(socket);
return false;
}
}
len = sizeof(struct sockaddr_in);
if (::getsockname(socket, (struct sockaddr*)&m_LocalAddr, &len) == -1) {
::close(socket);
return false;
}
if (!cTBSource::Open(socket)) {
::close(socket);
return false;
}
return true;
}
bool cTBSocket::Listen(const std::string &Ip, unsigned int Port, int BackLog) {
int val;
socklen_t len;
int socket;
if (IsOpen()) Close();
if ((socket = ::socket(PF_INET, m_Type, m_Protocol)) == -1)
return false;
val = 1;
if (::setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)) == -1)
return false;
m_LocalAddr.sin_family = AF_INET;
m_LocalAddr.sin_port = htons(Port);
m_LocalAddr.sin_addr.s_addr = inet_addr(Ip.c_str());
if (::bind(socket, (struct sockaddr*)&m_LocalAddr, sizeof(m_LocalAddr))
== -1)
return false;
len = sizeof(struct sockaddr_in);
if (::getsockname(socket, (struct sockaddr*)&m_LocalAddr, &len) == -1)
return false;
if (m_Type == SOCK_STREAM && ::listen(socket, BackLog) == -1)
return false;
if (!cTBSource::Open(socket))
return false;
return true;
}
bool cTBSocket::Accept(const cTBSocket &Listener) {
socklen_t addrlen;
int socket;
if (IsOpen()) Close();
addrlen = sizeof(struct sockaddr_in);
if ((socket = ::accept(Listener, (struct sockaddr*)&m_RemoteAddr,
&addrlen)) == -1)
return false;
addrlen = sizeof(struct sockaddr_in);
if (::getsockname(socket, (struct sockaddr*)&m_LocalAddr, &addrlen) == -1)
return false;
int sol=1;
// Ignore possible errors here, proceed as usual
::setsockopt(socket, SOL_SOCKET, SO_KEEPALIVE, &sol, sizeof(sol));
if (!cTBSource::Open(socket))
return false;
return true;
}
RETURNS(cTBSocket, cTBSocket::Accept(void) const, ret)
ret.Accept(*this);
RETURN(ret)
bool cTBSocket::Close(void) {
bool ret = true;
if (!IsOpen())
ERRNUL(EBADF);
if (::close(*this) == -1)
ret = false;
if (!cTBSource::Close())
ret = false;
memset(&m_LocalAddr, 0, sizeof(m_LocalAddr));
memset(&m_RemoteAddr, 0, sizeof(m_RemoteAddr));
return ret;
}
bool cTBSocket::Shutdown(int how) {
if (!IsOpen())
ERRNUL(EBADF);
return ::shutdown(*this, how) != -1;
}
bool cTBSocket::SetDSCP(void) {
int dscp = STREAMDEV_DSCP;
return ::setsockopt(*this, IPPROTO_IP, IP_TOS, &dscp, sizeof(dscp)) != -1;
}
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