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https://github.com/samba-team/samba.git
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4db7642caa
buffers.
Make security access masks simply a uint32 rather than a structure
with a uint32 in it.
(This used to be commit b41c52b9db)
119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/*
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* Unix SMB/Netbios implementation.
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* SEC_ACL handling routines
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* Copyright (C) Andrew Tridgell 1992-1998,
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* Copyright (C) Jeremy R. Allison 1995-2003.
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* Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
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* Copyright (C) Paul Ashton 1997-1998.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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/*******************************************************************
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Create a SEC_ACL structure.
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********************************************************************/
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SEC_ACL *make_sec_acl(TALLOC_CTX *ctx, uint16 revision, int num_aces, SEC_ACE *ace_list)
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{
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SEC_ACL *dst;
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int i;
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if((dst = TALLOC_ZERO_P(ctx,SEC_ACL)) == NULL)
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return NULL;
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dst->revision = revision;
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dst->num_aces = num_aces;
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dst->size = SEC_ACL_HEADER_SIZE;
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/* Now we need to return a non-NULL address for the ace list even
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if the number of aces required is zero. This is because there
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is a distinct difference between a NULL ace and an ace with zero
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entries in it. This is achieved by checking that num_aces is a
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positive number. */
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if ((num_aces) &&
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((dst->aces = TALLOC_ARRAY(ctx, SEC_ACE, num_aces))
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== NULL)) {
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return NULL;
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}
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for (i = 0; i < num_aces; i++) {
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dst->aces[i] = ace_list[i]; /* Structure copy. */
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dst->size += ace_list[i].size;
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}
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return dst;
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}
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/*******************************************************************
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Duplicate a SEC_ACL structure.
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********************************************************************/
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SEC_ACL *dup_sec_acl(TALLOC_CTX *ctx, SEC_ACL *src)
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{
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if(src == NULL)
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return NULL;
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return make_sec_acl(ctx, src->revision, src->num_aces, src->aces);
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}
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/*******************************************************************
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Compares two SEC_ACL structures
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********************************************************************/
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BOOL sec_acl_equal(SEC_ACL *s1, SEC_ACL *s2)
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{
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unsigned int i, j;
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/* Trivial cases */
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if (!s1 && !s2) return True;
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if (!s1 || !s2) return False;
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/* Check top level stuff */
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if (s1->revision != s2->revision) {
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DEBUG(10, ("sec_acl_equal(): revision differs (%d != %d)\n",
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s1->revision, s2->revision));
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return False;
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}
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if (s1->num_aces != s2->num_aces) {
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DEBUG(10, ("sec_acl_equal(): num_aces differs (%d != %d)\n",
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s1->revision, s2->revision));
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return False;
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}
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/* The ACEs could be in any order so check each ACE in s1 against
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each ACE in s2. */
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for (i = 0; i < s1->num_aces; i++) {
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BOOL found = False;
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for (j = 0; j < s2->num_aces; j++) {
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if (sec_ace_equal(&s1->aces[i], &s2->aces[j])) {
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found = True;
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break;
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}
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}
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if (!found) return False;
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}
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return True;
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}
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