mirror of https://github.com/neutrinolabs/xrdp
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/**
|
|
* xrdp: A Remote Desktop Protocol server.
|
|
*
|
|
* Copyright (C) 2021 Matt Burt
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* Enforce stream primitive checking
|
|
*/
|
|
|
|
#if defined(HAVE_CONFIG_H)
|
|
#include <config_ac.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "arch.h"
|
|
#include "parse.h"
|
|
#include "log.h"
|
|
|
|
void
|
|
parser_stream_overflow_check(const struct stream *s, int n, int is_out,
|
|
const char *file, int line)
|
|
{
|
|
/* Sanity checks */
|
|
if (n < 0)
|
|
{
|
|
LOG(LOG_LEVEL_ALWAYS, "%s:%d "
|
|
"stream primitive called with negative n=%d",
|
|
file, line, n);
|
|
abort();
|
|
}
|
|
|
|
if (is_out)
|
|
{
|
|
/* Output overflow */
|
|
if (!s_check_rem_out(s, n))
|
|
{
|
|
LOG(LOG_LEVEL_ALWAYS, "%s:%d Stream output buffer overflow. "
|
|
"Size=%d, pos=%d, requested=%d", file, line,
|
|
s->size, (int)(s->p - s->data), n);
|
|
abort();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Input overflow */
|
|
if (!s_check_rem(s, n))
|
|
{
|
|
LOG(LOG_LEVEL_ALWAYS, "%s:%d Stream input buffer overflow. "
|
|
"Max=%d, pos=%d, requested=%d", file, line,
|
|
(int)(s->end - s->data), (int)(s->p - s->data), n);
|
|
abort();
|
|
}
|
|
}
|
|
}
|