r23432: Remove superfluous comment.
[Samba/bb.git] / source3 / lib / secacl.c
blob4e2178c195ec42e40a89c85f58976a1a0343a9ff
1 /*
2 * Unix SMB/Netbios implementation.
3 * SEC_ACL handling routines
4 * Copyright (C) Andrew Tridgell 1992-1998,
5 * Copyright (C) Jeremy R. Allison 1995-2003.
6 * Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
7 * Copyright (C) Paul Ashton 1997-1998.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include "includes.h"
26 /*******************************************************************
27 Create a SEC_ACL structure.
28 ********************************************************************/
30 SEC_ACL *make_sec_acl(TALLOC_CTX *ctx, uint16 revision, int num_aces, SEC_ACE *ace_list)
32 SEC_ACL *dst;
33 int i;
35 if((dst = TALLOC_ZERO_P(ctx,SEC_ACL)) == NULL)
36 return NULL;
38 dst->revision = revision;
39 dst->num_aces = num_aces;
40 dst->size = SEC_ACL_HEADER_SIZE;
42 /* Now we need to return a non-NULL address for the ace list even
43 if the number of aces required is zero. This is because there
44 is a distinct difference between a NULL ace and an ace with zero
45 entries in it. This is achieved by checking that num_aces is a
46 positive number. */
48 if ((num_aces) &&
49 ((dst->aces = TALLOC_ARRAY(ctx, SEC_ACE, num_aces))
50 == NULL)) {
51 return NULL;
54 for (i = 0; i < num_aces; i++) {
55 dst->aces[i] = ace_list[i]; /* Structure copy. */
56 dst->size += ace_list[i].size;
59 return dst;
62 /*******************************************************************
63 Duplicate a SEC_ACL structure.
64 ********************************************************************/
66 SEC_ACL *dup_sec_acl(TALLOC_CTX *ctx, SEC_ACL *src)
68 if(src == NULL)
69 return NULL;
71 return make_sec_acl(ctx, src->revision, src->num_aces, src->aces);
74 /*******************************************************************
75 Compares two SEC_ACL structures
76 ********************************************************************/
78 BOOL sec_acl_equal(SEC_ACL *s1, SEC_ACL *s2)
80 unsigned int i, j;
82 /* Trivial cases */
84 if (!s1 && !s2) return True;
85 if (!s1 || !s2) return False;
87 /* Check top level stuff */
89 if (s1->revision != s2->revision) {
90 DEBUG(10, ("sec_acl_equal(): revision differs (%d != %d)\n",
91 s1->revision, s2->revision));
92 return False;
95 if (s1->num_aces != s2->num_aces) {
96 DEBUG(10, ("sec_acl_equal(): num_aces differs (%d != %d)\n",
97 s1->revision, s2->revision));
98 return False;
101 /* The ACEs could be in any order so check each ACE in s1 against
102 each ACE in s2. */
104 for (i = 0; i < s1->num_aces; i++) {
105 BOOL found = False;
107 for (j = 0; j < s2->num_aces; j++) {
108 if (sec_ace_equal(&s1->aces[i], &s2->aces[j])) {
109 found = True;
110 break;
114 if (!found) return False;
117 return True;