mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-12-12 18:00:54 +01:00
119 lines
2.6 KiB
C++
119 lines
2.6 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/TLSOutStream.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef HAVE_GNUTLS
|
|
using namespace rdr;
|
|
|
|
enum { DEFAULT_BUF_SIZE = 16384 };
|
|
|
|
ssize_t TLSOutStream::push(gnutls_transport_ptr_t str, const void* data,
|
|
size_t size)
|
|
{
|
|
TLSOutStream* self= (TLSOutStream*) str;
|
|
OutStream *out = self->out;
|
|
|
|
try {
|
|
out->writeBytes(data, size);
|
|
out->flush();
|
|
} catch (Exception& e) {
|
|
gnutls_transport_set_errno(self->session, EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
TLSOutStream::TLSOutStream(OutStream* _out, gnutls_session_t _session)
|
|
: session(_session), out(_out), bufSize(DEFAULT_BUF_SIZE), offset(0)
|
|
{
|
|
gnutls_transport_ptr_t recv, send;
|
|
|
|
ptr = start = new U8[bufSize];
|
|
end = start + bufSize;
|
|
|
|
gnutls_transport_set_push_function(session, push);
|
|
gnutls_transport_get_ptr2(session, &recv, &send);
|
|
gnutls_transport_set_ptr2(session, recv, this);
|
|
}
|
|
|
|
TLSOutStream::~TLSOutStream()
|
|
{
|
|
#if 0
|
|
try {
|
|
// flush();
|
|
} catch (Exception&) {
|
|
}
|
|
#endif
|
|
gnutls_transport_set_push_function(session, NULL);
|
|
|
|
delete [] start;
|
|
}
|
|
|
|
size_t TLSOutStream::length()
|
|
{
|
|
return offset + ptr - start;
|
|
}
|
|
|
|
void TLSOutStream::flush()
|
|
{
|
|
U8* sentUpTo = start;
|
|
while (sentUpTo < ptr) {
|
|
size_t n = writeTLS(sentUpTo, ptr - sentUpTo);
|
|
sentUpTo += n;
|
|
offset += n;
|
|
}
|
|
|
|
ptr = start;
|
|
out->flush();
|
|
}
|
|
|
|
void TLSOutStream::overrun(size_t needed)
|
|
{
|
|
if (needed > bufSize)
|
|
throw Exception("TLSOutStream overrun: buffer size exceeded");
|
|
|
|
flush();
|
|
}
|
|
|
|
size_t TLSOutStream::writeTLS(const U8* data, size_t length)
|
|
{
|
|
int n;
|
|
|
|
n = gnutls_record_send(session, data, length);
|
|
if (n == GNUTLS_E_INTERRUPTED || n == GNUTLS_E_AGAIN)
|
|
return 0;
|
|
|
|
if (n < 0)
|
|
throw TLSException("writeTLS", n);
|
|
|
|
return n;
|
|
}
|
|
|
|
#endif
|