s3:smbd: s/struct fd_event/struct tevent_fd
[Samba/gebeck_regimport.git] / source3 / smbd / srvstr.c
blobc069dd4a5ecb1fec0dca400eaabd5a754e8d3dd7
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
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 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "includes.h"
22 #include "smbd/smbd.h"
23 #include "smbd/globals.h"
25 /* Make sure we can't write a string past the end of the buffer */
27 size_t srvstr_push_fn(const char *base_ptr, uint16 smb_flags2, void *dest,
28 const char *src, int dest_len, int flags)
30 if (dest_len < 0) {
31 return 0;
34 /* 'normal' push into size-specified buffer */
35 return push_string_base(base_ptr, smb_flags2, dest, src,
36 dest_len, flags);
39 /*******************************************************************
40 Add a string to the end of a smb_buf, adjusting bcc and smb_len.
41 Return the bytes added
42 ********************************************************************/
44 ssize_t message_push_string(uint8 **outbuf, const char *str, int flags)
46 size_t buf_size = smb_len(*outbuf) + 4;
47 size_t grow_size;
48 size_t result;
49 uint8 *tmp;
52 * We need to over-allocate, now knowing what srvstr_push will
53 * actually use. This is very generous by incorporating potential
54 * padding, the terminating 0 and at most 4 chars per UTF-16 code
55 * point.
57 grow_size = (strlen(str) + 2) * 4;
59 if (!(tmp = talloc_realloc(NULL, *outbuf, uint8,
60 buf_size + grow_size))) {
61 DEBUG(0, ("talloc failed\n"));
62 return -1;
65 result = srvstr_push((char *)tmp, SVAL(tmp, smb_flg2),
66 tmp + buf_size, str, grow_size, flags);
68 if (result == (size_t)-1) {
69 DEBUG(0, ("srvstr_push failed\n"));
70 return -1;
72 set_message_bcc((char *)tmp, smb_buflen(tmp) + result);
74 *outbuf = tmp;
76 return result;