From 99b288156f021db7bb771f3a5bf78def61d699f2 Mon Sep 17 00:00:00 2001 From: Jelmer Vernooij Date: Sun, 1 Mar 2009 17:59:30 +0100 Subject: Move secace.c to top-level. --- source3/lib/secace.c | 293 --------------------------------------------- source3/lib/util_nttoken.c | 16 +++ 2 files changed, 16 insertions(+), 293 deletions(-) delete mode 100644 source3/lib/secace.c (limited to 'source3/lib') diff --git a/source3/lib/secace.c b/source3/lib/secace.c deleted file mode 100644 index 878fac252b..0000000000 --- a/source3/lib/secace.c +++ /dev/null @@ -1,293 +0,0 @@ -/* - * Unix SMB/Netbios implementation. - * SEC_ACE handling functions - * 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 . - */ - -#include "includes.h" - -/******************************************************************* - Check if ACE has OBJECT type. -********************************************************************/ - -bool sec_ace_object(uint8 type) -{ - if (type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT || - type == SEC_ACE_TYPE_ACCESS_DENIED_OBJECT || - type == SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT || - type == SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT) { - return True; - } - return False; -} - -/******************************************************************* - copy a SEC_ACE structure. -********************************************************************/ -void sec_ace_copy(SEC_ACE *ace_dest, SEC_ACE *ace_src) -{ - ace_dest->type = ace_src->type; - ace_dest->flags = ace_src->flags; - ace_dest->size = ace_src->size; - ace_dest->access_mask = ace_src->access_mask; - ace_dest->object = ace_src->object; - sid_copy(&ace_dest->trustee, &ace_src->trustee); -} - -/******************************************************************* - Sets up a SEC_ACE structure. -********************************************************************/ - -void init_sec_ace(SEC_ACE *t, const DOM_SID *sid, enum security_ace_type type, - uint32_t mask, uint8 flag) -{ - t->type = type; - t->flags = flag; - t->size = ndr_size_dom_sid(sid, NULL, 0) + 8; - t->access_mask = mask; - - ZERO_STRUCTP(&t->trustee); - sid_copy(&t->trustee, sid); -} - -/******************************************************************* - adds new SID with its permissions to ACE list -********************************************************************/ - -NTSTATUS sec_ace_add_sid(TALLOC_CTX *ctx, SEC_ACE **pp_new, SEC_ACE *old, unsigned *num, DOM_SID *sid, uint32 mask) -{ - unsigned int i = 0; - - if (!ctx || !pp_new || !old || !sid || !num) return NT_STATUS_INVALID_PARAMETER; - - *num += 1; - - if((pp_new[0] = TALLOC_ZERO_ARRAY(ctx, SEC_ACE, *num )) == 0) - return NT_STATUS_NO_MEMORY; - - for (i = 0; i < *num - 1; i ++) - sec_ace_copy(&(*pp_new)[i], &old[i]); - - (*pp_new)[i].type = SEC_ACE_TYPE_ACCESS_ALLOWED; - (*pp_new)[i].flags = 0; - (*pp_new)[i].size = SEC_ACE_HEADER_SIZE + ndr_size_dom_sid(sid, NULL, 0); - (*pp_new)[i].access_mask = mask; - sid_copy(&(*pp_new)[i].trustee, sid); - return NT_STATUS_OK; -} - -/******************************************************************* - modify SID's permissions at ACL -********************************************************************/ - -NTSTATUS sec_ace_mod_sid(SEC_ACE *ace, size_t num, DOM_SID *sid, uint32 mask) -{ - unsigned int i = 0; - - if (!ace || !sid) return NT_STATUS_INVALID_PARAMETER; - - for (i = 0; i < num; i ++) { - if (sid_compare(&ace[i].trustee, sid) == 0) { - ace[i].access_mask = mask; - return NT_STATUS_OK; - } - } - return NT_STATUS_NOT_FOUND; -} - -/******************************************************************* - delete SID from ACL -********************************************************************/ - -NTSTATUS sec_ace_del_sid(TALLOC_CTX *ctx, SEC_ACE **pp_new, SEC_ACE *old, uint32 *num, DOM_SID *sid) -{ - unsigned int i = 0; - unsigned int n_del = 0; - - if (!ctx || !pp_new || !old || !sid || !num) return NT_STATUS_INVALID_PARAMETER; - - if (*num) { - if((pp_new[0] = TALLOC_ZERO_ARRAY(ctx, SEC_ACE, *num )) == 0) - return NT_STATUS_NO_MEMORY; - } else { - pp_new[0] = NULL; - } - - for (i = 0; i < *num; i ++) { - if (sid_compare(&old[i].trustee, sid) != 0) - sec_ace_copy(&(*pp_new)[i], &old[i]); - else - n_del ++; - } - if (n_del == 0) - return NT_STATUS_NOT_FOUND; - else { - *num -= n_del; - return NT_STATUS_OK; - } -} - -/******************************************************************* - Compares two SEC_ACE structures -********************************************************************/ - -bool sec_ace_equal(SEC_ACE *s1, SEC_ACE *s2) -{ - /* Trivial case */ - - if (!s1 && !s2) { - return True; - } - - if (!s1 || !s2) { - return False; - } - - /* Check top level stuff */ - - if (s1->type != s2->type || s1->flags != s2->flags || - s1->access_mask != s2->access_mask) { - return False; - } - - /* Check SID */ - - if (!sid_equal(&s1->trustee, &s2->trustee)) { - return False; - } - - return True; -} - -int nt_ace_inherit_comp( SEC_ACE *a1, SEC_ACE *a2) -{ - int a1_inh = a1->flags & SEC_ACE_FLAG_INHERITED_ACE; - int a2_inh = a2->flags & SEC_ACE_FLAG_INHERITED_ACE; - - if (a1_inh == a2_inh) - return 0; - - if (!a1_inh && a2_inh) - return -1; - return 1; -} - -/******************************************************************* - Comparison function to apply the order explained below in a group. -*******************************************************************/ - -int nt_ace_canon_comp( SEC_ACE *a1, SEC_ACE *a2) -{ - if ((a1->type == SEC_ACE_TYPE_ACCESS_DENIED) && - (a2->type != SEC_ACE_TYPE_ACCESS_DENIED)) - return -1; - - if ((a2->type == SEC_ACE_TYPE_ACCESS_DENIED) && - (a1->type != SEC_ACE_TYPE_ACCESS_DENIED)) - return 1; - - /* Both access denied or access allowed. */ - - /* 1. ACEs that apply to the object itself */ - - if (!(a1->flags & SEC_ACE_FLAG_INHERIT_ONLY) && - (a2->flags & SEC_ACE_FLAG_INHERIT_ONLY)) - return -1; - else if (!(a2->flags & SEC_ACE_FLAG_INHERIT_ONLY) && - (a1->flags & SEC_ACE_FLAG_INHERIT_ONLY)) - return 1; - - /* 2. ACEs that apply to a subobject of the object, such as - * a property set or property. */ - - if (a1->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT) && - !(a2->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT))) - return -1; - else if (a2->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT) && - !(a1->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT))) - return 1; - - return 0; -} - -/******************************************************************* - Functions to convert a SEC_DESC ACE DACL list into canonical order. - JRA. - ---- from http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/order_of_aces_in_a_dacl.asp - -The following describes the preferred order: - - To ensure that noninherited ACEs have precedence over inherited ACEs, - place all noninherited ACEs in a group before any inherited ACEs. - This ordering ensures, for example, that a noninherited access-denied ACE - is enforced regardless of any inherited ACE that allows access. - - Within the groups of noninherited ACEs and inherited ACEs, order ACEs according to ACE type, as the following shows: - 1. Access-denied ACEs that apply to the object itself - 2. Access-denied ACEs that apply to a subobject of the object, such as a property set or property - 3. Access-allowed ACEs that apply to the object itself - 4. Access-allowed ACEs that apply to a subobject of the object" - -********************************************************************/ - -void dacl_sort_into_canonical_order(SEC_ACE *srclist, unsigned int num_aces) -{ - unsigned int i; - - if (!srclist || num_aces == 0) - return; - - /* Sort so that non-inherited ACE's come first. */ - qsort( srclist, num_aces, sizeof(srclist[0]), QSORT_CAST nt_ace_inherit_comp); - - /* Find the boundary between non-inherited ACEs. */ - for (i = 0; i < num_aces; i++ ) { - SEC_ACE *curr_ace = &srclist[i]; - - if (curr_ace->flags & SEC_ACE_FLAG_INHERITED_ACE) - break; - } - - /* i now points at entry number of the first inherited ACE. */ - - /* Sort the non-inherited ACEs. */ - if (i) - qsort( srclist, i, sizeof(srclist[0]), QSORT_CAST nt_ace_canon_comp); - - /* Now sort the inherited ACEs. */ - if (num_aces - i) - qsort( &srclist[i], num_aces - i, sizeof(srclist[0]), QSORT_CAST nt_ace_canon_comp); -} - -/******************************************************************* - Check if this ACE has a SID in common with the token. -********************************************************************/ - -bool token_sid_in_ace(const NT_USER_TOKEN *token, const SEC_ACE *ace) -{ - size_t i; - - for (i = 0; i < token->num_sids; i++) { - if (sid_equal(&ace->trustee, &token->user_sids[i])) - return True; - } - - return False; -} diff --git a/source3/lib/util_nttoken.c b/source3/lib/util_nttoken.c index 774ef498b7..76e7402422 100644 --- a/source3/lib/util_nttoken.c +++ b/source3/lib/util_nttoken.c @@ -115,3 +115,19 @@ NTSTATUS merge_nt_token(TALLOC_CTX *mem_ctx, return NT_STATUS_OK; } + +/******************************************************************* + Check if this ACE has a SID in common with the token. +********************************************************************/ + +bool token_sid_in_ace(const NT_USER_TOKEN *token, const struct security_ace *ace) +{ + size_t i; + + for (i = 0; i < token->num_sids; i++) { + if (sid_equal(&ace->trustee, &token->user_sids[i])) + return true; + } + + return false; +} -- cgit