mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-24 17:14:01 +01:00
102 lines
2.4 KiB
C++
102 lines
2.4 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
|
|
* Copyright (C) 2005 Martin Koegler
|
|
* Copyright (C) 2010 TigerVNC Team
|
|
*
|
|
* This 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 software 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 software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <rdr/Exception.h>
|
|
#include <rdr/TLSException.h>
|
|
#include <rdr/TLSInStream.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef HAVE_GNUTLS
|
|
using namespace rdr;
|
|
|
|
ssize_t TLSInStream::pull(gnutls_transport_ptr_t str, void* data, size_t size)
|
|
{
|
|
TLSInStream* self= (TLSInStream*) str;
|
|
InStream *in = self->in;
|
|
|
|
try {
|
|
if (!in->check(1, false)) {
|
|
gnutls_transport_set_errno(self->session, EAGAIN);
|
|
return -1;
|
|
}
|
|
|
|
if (in->avail() < size)
|
|
size = in->avail();
|
|
|
|
in->readBytes(data, size);
|
|
|
|
} catch (Exception& e) {
|
|
gnutls_transport_set_errno(self->session, EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
TLSInStream::TLSInStream(InStream* _in, gnutls_session_t _session)
|
|
: session(_session), in(_in)
|
|
{
|
|
gnutls_transport_ptr_t recv, send;
|
|
|
|
gnutls_transport_set_pull_function(session, pull);
|
|
gnutls_transport_get_ptr2(session, &recv, &send);
|
|
gnutls_transport_set_ptr2(session, this, send);
|
|
}
|
|
|
|
TLSInStream::~TLSInStream()
|
|
{
|
|
gnutls_transport_set_pull_function(session, NULL);
|
|
}
|
|
|
|
bool TLSInStream::fillBuffer(size_t maxSize, bool wait)
|
|
{
|
|
size_t n = readTLS((U8*) end, maxSize, wait);
|
|
if (!wait && n == 0)
|
|
return false;
|
|
end += n;
|
|
|
|
return true;
|
|
}
|
|
|
|
size_t TLSInStream::readTLS(U8* buf, size_t len, bool wait)
|
|
{
|
|
int n;
|
|
|
|
if (gnutls_record_check_pending(session) == 0) {
|
|
n = in->check(1, wait);
|
|
if (n == 0)
|
|
return 0;
|
|
}
|
|
|
|
n = gnutls_record_recv(session, (void *) buf, len);
|
|
if (n == GNUTLS_E_INTERRUPTED || n == GNUTLS_E_AGAIN)
|
|
return 0;
|
|
|
|
if (n < 0) throw TLSException("readTLS", n);
|
|
|
|
return n;
|
|
}
|
|
|
|
#endif
|