/* * Unix SMB/Netbios implementation. * SEC_ACL handling routines * Copyright (C) Andrew Tridgell 1992-1998, * Copyright (C) Jeremy R. Allison 1995-2003. * Copyright (C) Luke Kenneth Casson Leighton 1996-1998, * Copyright (C) Paul Ashton 1997-1998. * * 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" /******************************************************************* Create a SEC_ACL structure. ********************************************************************/ SEC_ACL *make_sec_acl(TALLOC_CTX *ctx, uint16 revision, int num_aces, SEC_ACE *ace_list) { SEC_ACL *dst; int i; if((dst = TALLOC_ZERO_P(ctx,SEC_ACL)) == NULL) return NULL; dst->revision = revision; dst->num_aces = num_aces; dst->size = SEC_ACL_HEADER_SIZE; /* Now we need to return a non-NULL address for the ace list even if the number of aces required is zero. This is because there is a distinct difference between a NULL ace and an ace with zero entries in it. This is achieved by checking that num_aces is a positive number. */ if ((num_aces) && ((dst->aces = TALLOC_ARRAY(ctx, SEC_ACE, num_aces)) == NULL)) { return NULL; } for (i = 0; i < num_aces; i++) { dst->aces[i] = ace_list[i]; /* Structure copy. */ dst->size += ace_list[i].size; } return dst; } /******************************************************************* Duplicate a SEC_ACL structure. ********************************************************************/ SEC_ACL *dup_sec_acl(TALLOC_CTX *ctx, SEC_ACL *src) { if(src == NULL) return NULL; return make_sec_acl(ctx, src->revision, src->num_aces, src->aces); } /******************************************************************* Compares two SEC_ACL structures ********************************************************************/ BOOL sec_acl_equal(SEC_ACL *s1, SEC_ACL *s2) { unsigned int i, j; /* Trivial cases */ if (!s1 && !s2) return True; if (!s1 || !s2) return False; /* Check top level stuff */ if (s1->revision != s2->revision) { DEBUG(10, ("sec_acl_equal(): revision differs (%d != %d)\n", s1->revision, s2->revision)); return False; } if (s1->num_aces != s2->num_aces) { DEBUG(10, ("sec_acl_equal(): num_aces differs (%d != %d)\n", s1->revision, s2->revision)); return False; } /* The ACEs could be in any order so check each ACE in s1 against each ACE in s2. */ for (i = 0; i < s1->num_aces; i++) { BOOL found = False; for (j = 0; j < s2->num_aces; j++) { if (sec_ace_equal(&s1->aces[i], &s2->aces[j])) { found = True; break; } } if (!found) return False; } return True; }