diff options
Diffstat (limited to 'libcli/security/secacl.c')
-rw-r--r-- | libcli/security/secacl.c | 122 |
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; +} |