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#include <config.h>
#include "tcpsocket.h"
#include "debug.h"
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
#include <unistd.h>
#include <fcntl.h>
TCPSocket::TCPSocket(std::string name, int sock)
throw(TCPSocketException)
{
this->name = name;
if(sock == -1) {
if((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
throw TCPSocketException(strerror(errno));
}
}
isconnected = false;
this->sock = sock;
PRACRO_DEBUG(socket, "TCPSocket %s: %p %d (%d)\n", name.c_str(), this, sock, getpid());
}
TCPSocket::~TCPSocket()
{
PRACRO_DEBUG(socket, "~TCPSocket %s: %p %d (%d)\n", name.c_str(), this, sock, getpid());
disconnect();
}
static int _listen(int sockfd, int backlog){return listen(sockfd, backlog);}
void TCPSocket::listen(unsigned short int port)
throw(TCPListenException)
{
if(sock == -1) throw TCPListenException("Socket not initialized.");
if(isconnected) throw TCPListenException("Socket alread connected.");
struct sockaddr_in socketaddr;
memset((char *) &socketaddr, sizeof(socketaddr), 0);
socketaddr.sin_family = AF_INET;
socketaddr.sin_port = htons(port);
socketaddr.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(sock, (struct sockaddr*)&socketaddr, sizeof(socketaddr)) == -1) {
throw TCPListenException(std::string("bind failed - ") + strerror(errno));
}
if(_listen(sock, 5) == -1) {
throw TCPListenException(std::string("listen failed - ") + strerror(errno));
}
isconnected = true;
}
static int _accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen)
{return accept(sockfd, addr, addrlen);}
TCPSocket *TCPSocket::accept()
throw(TCPAcceptException)
{
if(sock == -1) throw TCPAcceptException("Socket not initialized.");
if(!isconnected) throw TCPAcceptException("Socket not connected.");
struct sockaddr_in ssocketaddr;
int csalen = sizeof(ssocketaddr);
fd_set fset;
int ret;
FD_ZERO(&fset);
FD_SET(sock, &fset);
if( (ret = select (sock+1, &fset, NULL, NULL, NULL)) < 0) {
if(errno == EINTR) {
PRACRO_DEBUG(socket, "Accept got interrupt!\n");
return NULL;
} else {
throw TCPAcceptException("Select on socket failed.");
}
}
if(FD_ISSET(sock, &fset)) {
int csock = _accept(sock, (struct sockaddr*)&ssocketaddr, (socklen_t*)&csalen);
TCPSocket *child = new TCPSocket(name + "-child", csock);
if (child->sock == -1) {
throw TCPAcceptException(std::string("accept failed - ") + strerror(errno));
}
child->isconnected = true;
return child;
} else {
PRACRO_ERR_LOG(socket, "Accept returned with no socket - This should not happen!\n");
return NULL;
}
}
static int _connect(int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen)
{return connect(sockfd, serv_addr, addrlen);}
void TCPSocket::connect(std::string addr, unsigned short int port)
throw(TCPConnectException)
{
if(isconnected) throw TCPConnectException("Socket already connected.", "", "");
#ifndef BYPASS_STATICALLOCATIONS
char *ip;
struct in_addr **addr_list;
struct hostent *he;
he = gethostbyname(addr.c_str());
if(!he || !he->h_length) {
char portno[32];
sprintf(portno, "%d", port);
throw TCPConnectException(addr, portno,
std::string("host lookup failed: ") + hstrerror(h_errno));
}
addr_list = (struct in_addr **)he->h_addr_list;
ip = inet_ntoa(*addr_list[0]);
#else
char *ip = "127.0.0.1";
#endif
struct sockaddr_in socketaddr;
memset((char *) &socketaddr, sizeof(socketaddr), 0);
socketaddr.sin_family = AF_INET;
socketaddr.sin_port = htons(port);
socketaddr.sin_addr.s_addr = inet_addr(ip);
if(_connect(sock, (struct sockaddr*)&socketaddr, sizeof(socketaddr))) {
char portno[32];
sprintf(portno, "%d", port);
throw TCPConnectException(addr, portno, hstrerror(h_errno));
}
isconnected = true;
}
void TCPSocket::disconnect()
{
if(sock != -1) {
PRACRO_DEBUG(socket, "Closing TCPSocket %s: %p %d (%d)\n", name.c_str(), this, sock, getpid());
int ret = close(sock);
if(ret == -1) {
perror(name.c_str());
}
sock = -1;
}
isconnected = false;
}
bool TCPSocket::connected()
{
return sock != -1 && isconnected;
}
ssize_t _read(int fd, void *buf, size_t count) { return read(fd, buf, count); }
int TCPSocket::read(char *buf, int size, long timeout)
throw(TCPReadException)
{
int res = 0;
if(sock == -1) throw TCPReadException("Socket not initialized.");
if(!isconnected) throw TCPReadException("Socket is not connected.");
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = timeout;
struct timeval *ptv = NULL;
if(timeout >= 0) ptv = &tv;
fd_set fset;
int ret;
FD_ZERO(&fset);
FD_SET(sock, &fset);
ret = select (sock+1, &fset, NULL, NULL, ptv);
switch(ret) {
case -1:
if(errno == EINTR) {
PRACRO_DEBUG(socket, "EINTR - got interrupt\n");
return -1;
} else {
throw TCPReadException("Select on socket (read) failed.");
}
break;
case 0:
PRACRO_DEBUG(socket, "Timeout\n");
break;
default:
if(FD_ISSET(sock, &fset)) {
if( (res = _read(sock, buf, size)) == -1 ) {
throw TCPReadException(strerror(errno));
}
} else {
PRACRO_DEBUG(socket, "FD_ISSET failed (timeout?)\n");
return 0;
}
}
return res;
}
ssize_t _write(int fd, const void *buf, size_t count) { return write(fd, buf, count); }
int TCPSocket::write(char *data, int size)
throw(TCPWriteException)
{
if(sock == -1) {
throw TCPWriteException("Socket not initialized.");
}
if(!isconnected) {
throw TCPWriteException("Socket is not connected.");
}
int res;
if( (res = _write(sock, data, size)) == -1 ) {
throw TCPWriteException(strerror(errno));
}
return res;
}
int TCPSocket::write(std::string data)
throw(TCPWriteException)
{
return write((char*)data.c_str(), data.length());
}
std::string TCPSocket::srcaddr()
throw(TCPNameException)
{
std::string addr;
#ifndef BYPASS_STATICALLOCATIONS
struct sockaddr_in name;
socklen_t namelen = sizeof(name);
if(getpeername(sock, (sockaddr*)&name, &namelen) == -1) {
throw TCPNameException(strerror(errno));
}
addr = inet_ntoa(name.sin_addr);
#else
addr = "127.0.0.1";
#endif
return addr;
}
std::string TCPSocket::dstaddr()
throw(TCPNameException)
{
std::string addr;
#ifndef BYPASS_STATICALLOCATIONS
struct sockaddr_in name;
socklen_t namelen = sizeof(name);
if(getsockname(sock, (sockaddr*)&name, &namelen) == -1) {
throw TCPNameException(strerror(errno));
}
addr = inet_ntoa(name.sin_addr);
#else
addr = "127.0.0.1";
#endif
return addr;
}
#ifdef TEST_TCPSOCKET
int main()
{
char buf[32];
switch(fork()) {
case -1:
fprintf(stderr, "Could not fork: %s\n", strerror(errno));
return 1;
case 0:
try {
TCPSocket client;
sleep(1);
client.connect("localhost", 12345);
sprintf(buf, "hello");
client.write(buf, sizeof(buf));
printf("Sent: [%s]\n", buf);
} catch( Exception &e ) {
fprintf(stderr, "%s\n", e.what());
return 1;
}
break;
default:
try {
TCPSocket listen_sock;
listen_sock.listen(12345);
TCPSocket sock = listen_sock.accept();
sock.read(buf, sizeof(buf));
printf("Got: [%s]\n", buf);
if(std::string(buf) != "hello") return 1;
} catch( Exception &e ) {
fprintf(stderr, "%s\n", e.what());
return 1;
}
break;
}
return 0;
}
#endif
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