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/*
* Copyright (C) 2001-2006 Jacek Sieka, arnetheduck on gmail point com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdinc.h"
#include "DCPlusPlus.h"
#include "SSLSocket.h"
#include "LogManager.h"
#include "SettingsManager.h"
#include <openssl/err.h>
SSLSocket::SSLSocket(SSL_CTX* context) throw(SocketException) : ctx(context), ssl(0) {
}
void SSLSocket::connect(const string& aIp, uint16_t aPort) throw(SocketException) {
Socket::setBlocking(true);
Socket::connect(aIp, aPort);
if(ssl)
SSL_free(ssl);
ssl = SSL_new(ctx);
if(!ssl)
checkSSL(-1);
checkSSL(SSL_set_fd(ssl, sock));
checkSSL(SSL_connect(ssl));
dcdebug("Connected to SSL server using %s\n", SSL_get_cipher(ssl));
Socket::setBlocking(false);
}
void SSLSocket::accept(const Socket& listeningSocket) throw(SocketException) {
Socket::accept(listeningSocket);
if(ssl)
SSL_free(ssl);
ssl = SSL_new(ctx);
if(!ssl)
checkSSL(-1);
checkSSL(SSL_set_fd(ssl, sock));
checkSSL(SSL_accept(ssl));
dcdebug("Connected to SSL client using %s\n", SSL_get_cipher(ssl));
}
int SSLSocket::read(void* aBuffer, int aBufLen) throw(SocketException) {
if(!ssl) {
return -1;
}
int len = checkSSL(SSL_read(ssl, aBuffer, aBufLen));
if(len > 0) {
stats.totalDown += len;
dcdebug("In(s): %.*s\n", len, (char*)aBuffer);
}
return len;
}
int SSLSocket::write(const void* aBuffer, int aLen) throw(SocketException) {
if(!ssl) {
return -1;
}
int ret = checkSSL(SSL_write(ssl, aBuffer, aLen));
if(ret > 0) {
stats.totalUp += ret;
dcdebug("Out(s): %.*s\n", ret, (char*)aBuffer);
}
return ret;
}
int SSLSocket::checkSSL(int ret) throw(SocketException) {
if(!ssl) {
return -1;
}
if(ret <= 0) {
int err = SSL_get_error(ssl, ret);
switch(SSL_get_error(ssl, ret)) {
case SSL_ERROR_NONE: // Fallthrough - YaSSL doesn't for example return an openssl compatible error on recv fail
case SSL_ERROR_WANT_READ: // Fallthrough
case SSL_ERROR_WANT_WRITE:
return -1;
default:
{
SSL_free(ssl);
ssl = 0;
// @todo replace 80 with MAX_ERROR_SZ or whatever's appropriate for yaSSL in some nice way...
char errbuf[80];
throw SocketException(string("SSL Error: ") + ERR_error_string(err, errbuf) + " (" + Util::toString(ret) + ", " + Util::toString(err) + ")"); // @todo Translate
}
}
}
return ret;
}
int SSLSocket::wait(uint32_t millis, int waitFor) throw(SocketException) {
if(ssl && (waitFor & Socket::WAIT_READ)) {
/** @todo Take writing into account as well if reading is possible? */
char c;
if(SSL_peek(ssl, &c, 1) > 0)
return WAIT_READ;
}
return Socket::wait(millis, waitFor);
}
bool SSLSocket::isTrusted() const throw() {
if(!ssl) {
return false;
}
if(SSL_get_verify_result(ssl) != SSL_ERROR_NONE) {
return false;
}
if(!SSL_get_peer_certificate(ssl)) {
return false;
}
return true;
}
void SSLSocket::shutdown() throw() {
if(ssl)
SSL_shutdown(ssl);
}
void SSLSocket::close() throw() {
if(ssl) {
SSL_free(ssl);
ssl = 0;
}
Socket::shutdown();
Socket::close();
}
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