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#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "BString.h"
#include "Socket.h"
#include "Exceptions.h"
#include "Input.h"
#include "Output.h"
#include "gettext.h"
Socket::Socket() throw (GeneralException) : Handle(socket(AF_INET, SOCK_STREAM, 0)), connected(false), listening(false), writeclosed(false), readclosed(false) {
// cerr << "Socket(): connected = " << connected << "; readclosed = " << readclosed << "; writeclosed = " << writeclosed << endl;
if (GetHandle() < 0) {
throw GeneralException(_("Error creating socket."));
}
}
Socket::Socket(const Socket & s) : Handle(s), connected(s.connected), listening(s.listening), writeclosed(s.writeclosed), readclosed(s.readclosed) {
// cerr << "Constructing a socket by copy...\n";
// cerr << "Socket(const Socket &): connected = " << connected << "; readclosed = " << readclosed << "; writeclosed = " << writeclosed << endl;
}
Socket::Socket(int h) : Handle(h), connected(true), listening(false), writeclosed(false), readclosed(false) { }
String Socket::GetName(void) {
return String("socket");
}
bool Socket::IsConnected(void) {
return connected;
}
bool Socket::IsListening(void) {
return listening;
}
bool Socket::CanRead(void) {
// cerr << "CanRead: connected = " << connected << "; readclosed = " << readclosed << endl;
return connected && !readclosed;
}
bool Socket::CanWrite(void) {
// cerr << "CanWrite: connected = " << connected << "; writeclosed = " << writeclosed << endl;
return connected && !writeclosed;
}
void Socket::CloseWrite(void) {
if (!writeclosed) {
writeclosed = true;
shutdown(GetHandle(), 1);
}
}
void Socket::CloseRead(void) {
if (!readclosed) {
readclosed = true;
shutdown(GetHandle(), 0);
}
}
/***********************************************\
* Toute la suite n'est pas à décrire. Consulter *
* plutôt un document décrivant les sockets. *
\***********************************************/
bool Socket::SetLocal(const String & vhost, int port) {
struct hostent * localhostent;
struct in_addr localhostaddr;
struct sockaddr_in localsocketaddr;
memset((void *)&localhostaddr, 0, sizeof(localhostaddr));
if (vhost.strlen() != 0) {
if ((localhostent = gethostbyname(vhost.to_charp()))) {
memcpy((void *)&localhostaddr, localhostent->h_addr, sizeof(localhostaddr));
} else {
return false;
}
} else {
localhostaddr.s_addr = htonl(INADDR_ANY);
}
memset(&localsocketaddr, 0, sizeof(struct sockaddr_in));
localsocketaddr.sin_family = AF_INET;
localsocketaddr.sin_addr = localhostaddr;
localsocketaddr.sin_port = htons(port);
if (bind(GetHandle(), (struct sockaddr *) &localsocketaddr, sizeof(localsocketaddr)) < 0) {
return false;
} else {
return true;
}
}
bool Socket::Connect(const String & host, int port) {
struct hostent * remotehostent;
struct sockaddr_in remotesocketaddr;
if (!listening && !connected) {
// cerr << " - Resolving '" << host << "'..." << endl;
if (!(remotehostent = gethostbyname(host.to_charp()))) {
return false;
}
remotesocketaddr.sin_family = AF_INET;
remotesocketaddr.sin_port = htons(port);
bcopy(remotehostent->h_addr, &remotesocketaddr.sin_addr, remotehostent->h_length);
// cerr << " - Connecting to port " << port << " ..." << endl;
if (!connect(GetHandle(), (struct sockaddr *)&remotesocketaddr, sizeof(remotesocketaddr))) {
// cerr << " - Connected." << endl;
connected = true;
} else {
// cerr << " - Error connecting: " << strerror(errno) << endl;
}
}
return connected;
}
bool Socket::Listen(void) {
if (!listening && !connected) {
if (!listen(GetHandle(), 10)) {
listening = true;
}
}
return listening;
}
Socket Socket::Accept(void) throw (GeneralException) {
struct sockaddr inaddr;
socklen_t inlen = sizeof(inaddr);
int h;
if ((h = accept(GetHandle(), &inaddr, &inlen)) < 0) {
throw GeneralException(_("Failed accepting."));
} else {
return Socket(h);
}
}
int Socket::GetPort() {
int r;
struct sockaddr_in localsocketaddr;
socklen_t locallen = sizeof(localsocketaddr);
if (getsockname(GetHandle(), (struct sockaddr *) &localsocketaddr, &locallen)) {
return -1;
}
r = ntohs(localsocketaddr.sin_port);
return r;
}
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