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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
Unix SMB/CIFS implementation.
ldap filter argument escaping
Copyright (C) 1998, 1999, 2000 Luke Howard <lukeh@padl.com>,
Copyright (C) 2003 Andrew Bartlett <abartlet@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
/**
* Escape a parameter to an LDAP filter string, so they cannot contain
* embeded ( ) * or \ chars which may cause it not to parse correctly.
*
* @param s The input string
*
* @return A string allocated with malloc(), containing the escaped string,
* and to be free()ed by the caller.
**/
char *escape_ldap_string_alloc(const char *s)
{
size_t len = strlen(s)+1;
char *output = (char *)SMB_MALLOC(len);
const char *sub;
int i = 0;
char *p = output;
if (output == NULL) {
return NULL;
}
while (*s)
{
switch (*s)
{
case '*':
sub = "\\2a";
break;
case '(':
sub = "\\28";
break;
case ')':
sub = "\\29";
break;
case '\\':
sub = "\\5c";
break;
default:
sub = NULL;
break;
}
if (sub) {
len = len + 3;
output = (char *)SMB_REALLOC(output, len);
if (!output) {
return NULL;
}
p = &output[i];
strncpy (p, sub, 3);
p += 3;
i += 3;
} else {
*p = *s;
p++;
i++;
}
s++;
}
*p = '\0';
return output;
}
char *escape_rdn_val_string_alloc(const char *s)
{
char *output, *p;
/* The maximum size of the escaped string can be twice the actual size */
output = (char *)SMB_MALLOC(2*strlen(s) + 1);
if (output == NULL) {
return NULL;
}
p = output;
while (*s)
{
switch (*s)
{
case ',':
case '=':
case '+':
case '<':
case '>':
case '#':
case ';':
case '\\':
case '\"':
*p++ = '\\';
*p++ = *s;
break;
default:
*p = *s;
p++;
}
s++;
}
*p = '\0';
/* resize the string to the actual final size */
output = (char *)SMB_REALLOC(output, strlen(output) + 1);
return output;
}
|
