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// Copyright (C) 2010-2014 David Sugar, Tycho Softworks.
// Copyright (C) 2015-2020 Cherokees of Idaho.
//
// This file is part of GNU uCommon C++.
//
// GNU uCommon C++ is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU uCommon C++ 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.
#include "local.h"
#ifndef UCOMMON_SYSRUNTIME
namespace ucommon {
sstream::sstream(secure::client_t scontext) :
tcpstream()
{
__context *ctx = (__context *)scontext;
ssl = NULL;
bio = NULL;
cert = NULL;
server = false;
verified = secure::NONE;
if(ctx && ctx->ctx && ctx->err() == secure::OK) {
ssl = SSL_new(ctx->ctx);
cert = SSL_get_peer_certificate((SSL *)ssl);
}
}
sstream::sstream(const TCPServer *tcp, secure::server_t scontext, size_t size) :
tcpstream(tcp, (unsigned)size)
{
__context *ctx = (__context *)scontext;
ssl = NULL;
bio = NULL;
cert = NULL;
server = true;
verified = secure::NONE;
if(ctx && ctx->ctx && ctx->err() == secure::OK)
ssl = SSL_new(ctx->ctx);
if(!is_open() || !ssl)
return;
SSL_set_fd((SSL *)ssl, (int)getsocket());
if(SSL_accept((SSL *)ssl) > 0) {
bio = SSL_get_wbio((SSL *)ssl);
cert = SSL_get_peer_certificate((SSL *)ssl);
if(cert) {
unsigned long res = SSL_get_verify_result((SSL *)ssl);
switch(res) {
case X509_V_OK:
verified = secure::VERIFIED;
break;
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
verified = secure::SIGNED;
break;
default:
break;
}
}
}
}
sstream::~sstream()
{
release();
}
void sstream::open(const char *host, const char *service, size_t size)
{
if(server)
return;
close();
tcpstream::open(host, service, (unsigned)size);
if(!is_open() || !ssl)
return;
SSL_set_fd((SSL *)ssl, (int)getsocket());
if(SSL_connect((SSL *)ssl) > 0) {
bio = SSL_get_wbio((SSL *)ssl);
cert = SSL_get_peer_certificate((SSL *)ssl);
if(cert) {
unsigned long res = SSL_get_verify_result((SSL *)ssl);
switch(res) {
case X509_V_OK:
verified = secure::VERIFIED;
break;
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
verified = secure::SIGNED;
break;
default:
break;
}
}
}
}
void sstream::close(void)
{
if(server)
return;
if(bio) {
SSL_shutdown((SSL *)ssl);
bio = NULL;
}
if(cert) {
X509_free((X509*)cert);
cert = NULL;
verified = secure::NONE;
}
tcpstream::close();
}
void sstream::release(void)
{
server = false;
close();
if(ssl) {
SSL_free((SSL *)ssl);
ssl = NULL;
}
}
ssize_t sstream::_write(const char *address, size_t size)
{
if(!bio)
return tcpstream::_write(address, size);
return SSL_write((SSL *)ssl, address, (int)size);
}
ssize_t sstream::_read(char *address, size_t size)
{
if(!bio)
return tcpstream::_read(address, size);
return SSL_read((SSL *)ssl, address, (int)size);
}
bool sstream::_wait(void)
{
if(so == INVALID_SOCKET)
return false;
if(ssl && SSL_pending((SSL *)ssl))
return true;
return tcpstream::_wait();
}
int sstream::sync()
{
int rtn = tcpstream::sync();
if(bio)
rtn = BIO_flush((BIO *)bio);
return rtn;
}
} // namespace ucommon
#endif
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