1 /* $NetBSD: ldap.c,v 1.1.1.2 2014/04/24 12:45:56 pettai Exp $ */
2
3 /*
4 * Copyright (c) 2008 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "windlocl.h"
37 #include <assert.h>
38
39 static int
put_char(uint32_t * out,size_t * o,uint32_t c,size_t out_len)40 put_char(uint32_t *out, size_t *o, uint32_t c, size_t out_len)
41 {
42 if (*o >= out_len)
43 return 1;
44 out[*o] = c;
45 (*o)++;
46 return 0;
47 }
48
49 int
_wind_ldap_case_exact_attribute(const uint32_t * tmp,size_t olen,uint32_t * out,size_t * out_len)50 _wind_ldap_case_exact_attribute(const uint32_t *tmp,
51 size_t olen,
52 uint32_t *out,
53 size_t *out_len)
54 {
55 size_t o = 0, i = 0;
56
57 if (olen == 0) {
58 *out_len = 0;
59 return 0;
60 }
61
62 if (put_char(out, &o, 0x20, *out_len))
63 return WIND_ERR_OVERRUN;
64 while(i < olen && tmp[i] == 0x20) /* skip initial spaces */
65 i++;
66
67 while (i < olen) {
68 if (tmp[i] == 0x20) {
69 if (put_char(out, &o, 0x20, *out_len) ||
70 put_char(out, &o, 0x20, *out_len))
71 return WIND_ERR_OVERRUN;
72 while(i < olen && tmp[i] == 0x20) /* skip middle spaces */
73 i++;
74 } else {
75 if (put_char(out, &o, tmp[i++], *out_len))
76 return WIND_ERR_OVERRUN;
77 }
78 }
79 assert(o > 0);
80
81 /* only one spaces at the end */
82 if (o == 1 && out[0] == 0x20)
83 o = 0;
84 else if (out[o - 1] == 0x20) {
85 if (out[o - 2] == 0x20)
86 o--;
87 } else
88 put_char(out, &o, 0x20, *out_len);
89
90 *out_len = o;
91
92 return 0;
93 }
94