/*
* ProFTPD - FTP server daemon
* Copyright (c) 2003 The ProFTPD Project team
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* As a special exemption, the ProFTPD Project team and other respective
* copyright holders give permission to link this program with OpenSSL, and
* distribute the resulting executable, without including the source code for
* OpenSSL in the source distribution.
*/
/* Class routines
* $Id: class.c,v 1.5 2004/06/30 02:42:13 castaglia Exp $
*/
#include "conf.h"
/* Store the defined Classes in a linked list. If many Classes are defined,
* this may need to be redefined to be a collision-chained hash.
*/
static pr_class_t *class_list = NULL;
static pr_class_t *curr_cls = NULL;
pr_class_t *pr_class_get(pr_class_t *prev) {
if (prev)
return prev->cls_next;
return class_list;
}
pr_class_t *pr_class_match_addr(pr_netaddr_t *addr) {
pr_class_t *cls;
if (!addr) {
errno = EINVAL;
return NULL;
}
for (cls = class_list; cls; cls = cls->cls_next) {
array_header *acl_list = cls->cls_acls;
pr_netacl_t **acls = acl_list->elts;
register int i;
int next_class = FALSE;
/* For each ACL rule in this class, compare the rule against the given
* address. The address matches the given class depending on the
* Satisfy setting: if "any", the class matches if any rule matches;
* if "all", the class matches only if _all_ rules match.
*/
for (i = 0; i < acl_list->nelts; i++) {
if (next_class)
break;
switch (cls->cls_satisfy) {
case PR_CLASS_SATISFY_ANY:
if (pr_netacl_match(acls[i], addr) == 1)
return cls;
break;
case PR_CLASS_SATISFY_ALL:
if (pr_netacl_match(acls[i], addr) == 0)
next_class = TRUE;
break;
}
}
}
errno = ENOENT;
return NULL;
}
pr_class_t *pr_class_find(const char *name) {
pr_class_t *cls;
if (!name) {
errno = EINVAL;
return NULL;
}
for (cls = class_list; cls; cls = cls->cls_next)
if (strcmp(cls->cls_name, name) == 0)
return cls;
errno = ENOENT;
return NULL;
}
int pr_class_add_acl(pr_netacl_t *acl) {
if (!acl) {
errno = EINVAL;
return -1;
}
if (!curr_cls) {
errno = EPERM;
return -1;
}
/* Add this ACL rule to the current Class. */
if (!curr_cls->cls_acls)
curr_cls->cls_acls = make_array(curr_cls->cls_pool, 1,
sizeof(pr_netacl_t *));
*((pr_netacl_t **) push_array(curr_cls->cls_acls)) =
pr_netacl_dup(curr_cls->cls_pool, acl);
return 0;
}
int pr_class_set_satisfy(int satisfy) {
if (!curr_cls) {
errno = EPERM;
return -1;
}
/* Set the Satisfy flag on the current Class. */
curr_cls->cls_satisfy = satisfy;
return 0;
}
int pr_class_open(pool *p, const char *name) {
pr_class_t *cls;
pool *cls_pool;
if (!p || !name) {
errno = EINVAL;
return -1;
}
/* Allocate a sub pool from the given pool, from which a new Class will
* be allocated.
*/
cls_pool = make_sub_pool(p);
cls = pcalloc(cls_pool, sizeof(pr_class_t));
cls->cls_pool = cls_pool;
cls->cls_name = pstrdup(cls->cls_pool, name);
cls->cls_satisfy = PR_CLASS_SATISFY_ANY;
/* Change the configuration context type. */
main_server->config_type = CONF_CLASS;
curr_cls = cls;
return 0;
}
int pr_class_close(void) {
/* If there is no current Class, there is nothing to do. */
if (!curr_cls)
return 0;
/* If there are no client rules in this class, simply remove it. No need
* to waste space.
*/
if (!curr_cls->cls_acls) {
destroy_pool(curr_cls->cls_pool);
curr_cls = NULL;
/* Restore the configuration context type. */
main_server->config_type = CONF_ROOT;
errno = EINVAL;
return -1;
}
/* Make sure the list of clients is NULL-terminated. */
push_array(curr_cls->cls_acls);
/* Now add the current Class to the end of the list. */
if (class_list) {
pr_class_t *ci = class_list;
while (ci && ci->cls_next)
ci = ci->cls_next;
ci->cls_next = curr_cls;
} else
class_list = curr_cls;
curr_cls = NULL;
/* Restore the configuration context type. */
main_server->config_type = CONF_ROOT;
return 0;
}
void init_class(void) {
class_list = NULL;
return;
}
Last Updated: Thu Feb 23 11:07:10 2006
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