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#include "core.h"
/*static*/ bool SocketRWCommon::setSocketNonBlocking(int sock) {
int opts = fcntl(sock, F_GETFL);
if (opts < 0) {
perror("Could not get fcntl options\n");
return false;
}
opts |= O_NONBLOCK;
if (fcntl(sock, F_SETFL, opts) == -1) {
perror("Could not set fcntl options\n");
return false;
}
return true;
}
SocketRWCommon::SocketRWCommon(NetCore *_netCore) {
netCore = _netCore;
sock = -1;
state = CS_DISCONNECTED;
tlsActive = false;
}
SocketRWCommon::~SocketRWCommon() {
close();
}
bool SocketRWCommon::hasTlsPendingData() const {
if (tlsActive)
return (gnutls_record_check_pending(tls) > 0);
else
return false;
}
bool SocketRWCommon::tryTLSHandshake() {
int hsRet = gnutls_handshake(tls);
if (gnutls_error_is_fatal(hsRet)) {
printf("[SocketRWCommon::tryTLSHandshake] gnutls_handshake borked\n");
gnutls_perror(hsRet);
close();
return false;
}
if (hsRet == GNUTLS_E_SUCCESS) {
// We're in !!
state = CS_CONNECTED;
inputBuf.clear();
outputBuf.clear();
printf("[SocketRWCommon connected via SSL!]\n");
return true;
}
return false;
}
void SocketRWCommon::close() {
if (sock != -1) {
if (tlsActive)
gnutls_bye(tls, GNUTLS_SHUT_RDWR);
shutdown(sock, SHUT_RDWR);
::close(sock);
}
sock = -1;
inputBuf.clear();
outputBuf.clear();
state = CS_DISCONNECTED;
if (tlsActive) {
gnutls_deinit(tls);
tlsActive = false;
}
}
void SocketRWCommon::readAction() {
// Ensure we have at least 0x200 bytes space free
// (Up this, maybe?)
int bufSize = inputBuf.size();
int requiredSize = bufSize + 0x200;
if (requiredSize > inputBuf.capacity())
inputBuf.setCapacity(requiredSize);
ssize_t amount;
if (tlsActive) {
amount = gnutls_record_recv(tls,
&inputBuf.data()[bufSize],
0x200);
} else {
amount = recv(sock,
&inputBuf.data()[bufSize],
0x200,
0);
}
if (amount > 0) {
// Yep, we have data
printf("[fd=%d] Read %d bytes\n", sock, amount);
inputBuf.resize(bufSize + amount);
processReadBuffer();
} else if (amount == 0) {
printf("[fd=%d] Read 0! Socket closing.\n", sock);
close();
} else if (amount < 0) {
if (tlsActive) {
if (gnutls_error_is_fatal(amount)) {
printf("Error while reading [gnutls %d]!\n", amount);
close();
}
} else {
perror("Error while reading!");
close();
}
}
}
void SocketRWCommon::writeAction() {
// What can we get rid of...?
ssize_t amount;
if (tlsActive) {
amount = gnutls_record_send(tls,
outputBuf.data(),
outputBuf.size());
} else {
amount = send(sock,
outputBuf.data(),
outputBuf.size(),
0);
}
if (amount > 0) {
printf("[fd=%d] Wrote %d bytes out of %d\n", sock, amount, outputBuf.size());
outputBuf.trimFromStart(amount);
} else if (amount == 0)
printf("Sent 0!\n");
else if (amount < 0) {
if (tlsActive) {
if (gnutls_error_is_fatal(amount)) {
printf("Error while sending [gnutls %d]!\n", amount);
close();
}
} else {
perror("Error while sending!");
close();
}
}
}
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