1/*
2   Unix SMB/CIFS implementation.
3   server specific string routines
4   Copyright (C) Andrew Tridgell 2001
5   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 2 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20*/
21
22#include "includes.h"
23extern int max_send;
24
25/* Make sure we can't write a string past the end of the buffer */
26
27size_t srvstr_push_fn(const char *function, unsigned int line,
28		      const char *base_ptr, void *dest,
29		      const char *src, int dest_len, int flags)
30{
31	size_t buf_used = PTR_DIFF(dest, base_ptr);
32	if (dest_len == -1) {
33		if (((ptrdiff_t)dest < (ptrdiff_t)base_ptr) || (buf_used > (size_t)max_send)) {
34#if 0
35			DEBUG(0, ("Pushing string of 'unlimited' length into non-SMB buffer!\n"));
36#endif
37			return push_string_fn(function, line, base_ptr, dest, src, -1, flags);
38		}
39		return push_string_fn(function, line, base_ptr, dest, src, max_send - buf_used, flags);
40	}
41
42	/* 'normal' push into size-specified buffer */
43	return push_string_fn(function, line, base_ptr, dest, src, dest_len, flags);
44}
45