1 files changed, 122 insertions, 0 deletions
diff --git a/libcli/security/secacl.c b/libcli/security/secacl.c
new file mode 100644
index 0000000000..45640773b0
--- /dev/null
+++ b/libcli/security/secacl.c
@@ -0,0 +1,122 @@
+/* 
+ *  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"
+#include "libcli/security/security.h"
+
+#define  SEC_ACL_HEADER_SIZE (2 * sizeof(uint16_t) + sizeof(uint32_t))
+
+/*******************************************************************
+ Create a SEC_ACL structure.  
+********************************************************************/
+
+struct security_acl *make_sec_acl(TALLOC_CTX *ctx, 
+								  enum security_acl_revision revision,
+								  int num_aces, struct security_ace *ace_list)
+{
+	struct security_acl *dst;
+	int i;
+
+	if((dst = talloc_zero(ctx, struct security_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, struct security_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.  
+********************************************************************/
+
+struct security_acl *dup_sec_acl(TALLOC_CTX *ctx, struct security_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(struct security_acl *s1, struct security_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;
+}