diff options
Diffstat (limited to 'framework/src/audit/src/ausearch-avc.c')
-rw-r--r-- | framework/src/audit/src/ausearch-avc.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/framework/src/audit/src/ausearch-avc.c b/framework/src/audit/src/ausearch-avc.c new file mode 100644 index 00000000..2d3b3199 --- /dev/null +++ b/framework/src/audit/src/ausearch-avc.c @@ -0,0 +1,222 @@ +/* +* ausearch-avc.c - Minimal linked list library for avcs +* Copyright (c) 2006,2008,2014 Red Hat Inc., Durham, North Carolina. +* All Rights Reserved. +* +* This software may be freely redistributed and/or modified under the +* terms of the GNU General Public License as published by the Free +* Software Foundation; either version 2, 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; see the file COPYING. If not, write to the +* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +* +* Authors: +* Steve Grubb <sgrubb@redhat.com> +*/ + +#include "config.h" +#include <stdlib.h> +#include <string.h> +#include "ausearch-avc.h" + + +void alist_create(alist *l) +{ + l->head = NULL; + l->cur = NULL; + l->cnt = 0; +} + +anode *alist_next(alist *l) +{ + if (l->cur == NULL) + return NULL; + l->cur = l->cur->next; + return l->cur; +} + +static void alist_last(alist *l) +{ + register anode* cur; + + if (l->head == NULL) + return; + + // Start with cur in hopes that we don't start at beginning + if (l->cur) + cur = l->cur; + else + cur = l->head; + + // Loop until no next value + while (cur->next) + cur = cur->next; + l->cur = cur; +} + +void alist_append(alist *l, anode *node) +{ + anode* newnode; + + newnode = malloc(sizeof(anode)); + + if (node->scontext) + newnode->scontext = node->scontext; + else + newnode->scontext = NULL; + + if (node->tcontext) + newnode->tcontext = node->tcontext; + else + newnode->tcontext = NULL; + + newnode->avc_result = node->avc_result; + + if (node->avc_perm) + newnode->avc_perm = node->avc_perm; + else + newnode->avc_perm = NULL; + + if (node->avc_class) + newnode->avc_class = node->avc_class; + else + newnode->avc_class = NULL; + + newnode->next = NULL; + + // Make sure cursor is at the end + alist_last(l); + + // if we are at top, fix this up + if (l->head == NULL) + l->head = newnode; + else // Otherwise add pointer to newnode + l->cur->next = newnode; + + // make newnode current + l->cur = newnode; + l->cnt++; +} + +int alist_find_subj(alist *l) +{ + register anode* window = l->head; + + while (window) { + if (window->scontext) { + l->cur = window; + return 1; + } + else + window = window->next; + } + return 0; +} + +anode *alist_next_subj(alist *l) +{ + if (l->cur == NULL) + return NULL; + while (l->cur->next) { + l->cur=l->cur->next; + if (l->cur->scontext) + return l->cur; + } + return NULL; +} + +int alist_find_obj(alist *l) +{ + register anode* window = l->head; + + while (window) { + if (window->tcontext) { + l->cur = window; + return 1; + } + else + window = window->next; + } + return 0; +} + +anode *alist_next_obj(alist *l) +{ + if (l->cur == NULL) + return NULL; + while (l->cur->next) { + l->cur=l->cur->next; + if (l->cur->tcontext) + return l->cur; + } + return NULL; +} + +int alist_find_avc(alist *l) +{ + register anode* window = l->head; + + while (window) { + if (window->avc_result != AVC_UNSET) { + l->cur = window; + return 1; + } + else + window = window->next; + } + return 0; +} + +anode *alist_next_avc(alist *l) +{ + if (l->cur == NULL) + return NULL; + while (l->cur->next) { + l->cur=l->cur->next; + if (l->cur->avc_result != AVC_UNSET) + return l->cur; + } + return NULL; +} + +void alist_clear(alist* l) +{ + anode* nextnode; + register anode* current; + + current = l->head; + while (current) { + nextnode=current->next; + anode_clear(current); + free(current); + current=nextnode; + } + l->head = NULL; + l->cur = NULL; + l->cnt = 0; +} + +void anode_init(anode *an) +{ + an->scontext = NULL; + an->tcontext = NULL; + an->avc_result = AVC_UNSET; + an->avc_perm = NULL; + an->avc_class = NULL; +} + +void anode_clear(anode *an) +{ + free(an->scontext); + free(an->tcontext); + free(an->avc_perm); + free(an->avc_class); +} + |