1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/**
* 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();
}
}
}
|
