2 Unix SMB/Netbios implementation.
4 server specific string routines
5 Copyright (C) Andrew Tridgell 2001
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.
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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define UNICODE_FLAG() (SVAL(inbuf, smb_flg2) & FLAGS2_UNICODE_STRINGS)
28 /****************************************************************************
29 copy a string from a char* src to a unicode or ascii
30 dos code page destination choosing unicode or ascii based on the
31 FLAGS2_UNICODE_STRINGS bit in inbuf
32 return the number of bytes occupied by the string in the destination
34 STR_TERMINATE means include the null termination
35 STR_CONVERT means convert from unix to dos codepage
36 STR_UPPER means uppercase in the destination
37 STR_ASCII use ascii even with unicode servers
38 dest_len is the maximum length allowed in the destination. If dest_len
39 is -1 then no maxiumum is used
40 ****************************************************************************/
41 int srvstr_push(void *inbuf, void *outbuf, void *dest, const char *src, int dest_len, int flags)
45 /* treat a pstring as "unlimited" length */
47 dest_len = sizeof(pstring);
50 if (!(flags & STR_ASCII) && srvstr_align(inbuf, PTR_DIFF(dest, outbuf))) {
57 if ((flags & STR_ASCII) || !UNICODE_FLAG()) {
58 /* the client doesn't want unicode */
59 safe_strcpy(dest, src, dest_len);
61 if (flags & STR_TERMINATE) len++;
62 if (flags & STR_CONVERT) unix_to_dos(dest,True);
63 if (flags & STR_UPPER) strupper(dest);
67 /* the server likes unicode. give it the works */
68 if (flags & STR_CONVERT) {
69 dos_PutUniCode(dest, src, dest_len, flags & STR_TERMINATE);
71 ascii_to_unistr(dest, src, dest_len);
73 if (flags & STR_UPPER) {
77 if (flags & STR_TERMINATE) len += 2;
82 /****************************************************************************
83 return the length that a string would occupy when copied with srvstr_push()
84 STR_TERMINATE means include the null termination
85 STR_CONVERT means convert from unix to dos codepage
86 STR_UPPER means uppercase in the destination
87 note that dest is only used for alignment purposes. No data is written.
88 ****************************************************************************/
89 int srvstr_push_size(void *inbuf, void *outbuf,
90 const void *dest, const char *src, int dest_len, int flags)
92 int len = strlen(src);
93 if (flags & STR_TERMINATE) len++;
94 if (!(flags & STR_ASCII) && UNICODE_FLAG()) len *= 2;
96 if (!(flags & STR_ASCII) && dest && srvstr_align(inbuf, PTR_DIFF(outbuf, dest))) {
103 /****************************************************************************
104 copy a string from a unicode or ascii source (depending on flg2)
105 to a char* destination
107 STR_CONVERT means convert from dos to unix codepage
108 STR_TERMINATE means the string in src is null terminated
109 STR_UNICODE means to force as unicode
110 if STR_TERMINATE is set then src_len is ignored
111 src_len is the length of the source area in bytes
112 return the number of bytes occupied by the string in src
113 ****************************************************************************/
114 int srvstr_pull(void *inbuf, char *dest, const void *src, int dest_len, int src_len, int flags)
118 if (dest_len == -1) {
119 dest_len = sizeof(pstring);
122 if (!(flags & STR_ASCII) && srvstr_align(inbuf, PTR_DIFF(src, inbuf))) {
124 if (src_len > 0) src_len--;
127 if ((flags & STR_ASCII) || (!(flags & STR_UNICODE) && !UNICODE_FLAG())) {
128 /* the server doesn't want unicode */
129 if (flags & STR_TERMINATE) {
130 safe_strcpy(dest, src, dest_len);
133 if (src_len > dest_len) src_len = dest_len;
135 memcpy(dest, src, len);
138 if (flags & STR_CONVERT) dos_to_unix(dest,True);
142 if (flags & STR_TERMINATE) {
143 unistr_to_ascii(dest, src, dest_len);
144 len = strlen(dest)*2 + 2;
147 if (dest_len*2 < src_len) src_len = 2*dest_len;
148 for (i=0; i < src_len; i += 2) {
155 if (flags & STR_CONVERT) dos_to_unix(dest,True);
159 /****************************************************************************
160 return the length that a string would occupy (not including the null)
161 when copied with srvstr_pull()
162 if src_len is -1 then assume the source is null terminated
163 ****************************************************************************/
164 int srvstr_pull_size(void *inbuf, const void *src, int src_len)
166 if (srvstr_align(inbuf, PTR_DIFF(src, inbuf))) {
168 if (src_len > 0) src_len--;
171 if (!UNICODE_FLAG()) {
174 return strlen_w(src);
177 /****************************************************************************
178 return an alignment of either 0 or 1
179 if unicode is not negotiated then return 0
180 otherwise return 1 if offset is off
181 ****************************************************************************/
182 int srvstr_align(void *inbuf, int offset)
184 if (!UNICODE_FLAG()) return 0;