confacl.c revision 40f53fa8d9c6a4fc38c0014495e7a42b08f52481
/*
* Copyright (C) 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: confacl.c,v 1.20 2000/08/01 01:23:14 tale Exp $ */
#include <config.h>
#include <isc/mem.h>
#include <isc/string.h> /* Required for HP/UX (and others?) */
#include <isc/util.h>
#include <dns/log.h>
#include <dns/confacl.h>
static isc_result_t
acl_delete(dns_c_acl_t **aclptr);
isc_result_t
dns_c_acltable_new(isc_mem_t *mem, dns_c_acltable_t **newtable) {
dns_c_acltable_t *table;
REQUIRE(mem != NULL);
REQUIRE(newtable != NULL);
table = isc_mem_get(mem, sizeof *table);
if (table == NULL) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_CONFIG,
DNS_LOGMODULE_CONFIG, ISC_LOG_CRITICAL,
"Out of memory");
return (ISC_R_NOMEMORY);
}
table->mem = mem;
table->magic = DNS_C_CONFACLTABLE_MAGIC;
ISC_LIST_INIT(table->acl_list);
*newtable = table;
return (ISC_R_SUCCESS);
}
isc_result_t
dns_c_acltable_delete(dns_c_acltable_t **table) {
dns_c_acltable_t *acltable;
isc_mem_t *mem;
REQUIRE(table != NULL);
REQUIRE(*table != NULL);
acltable = *table;
REQUIRE(DNS_C_CONFACLTABLE_VALID(acltable));
dns_c_acltable_clear(acltable);
mem = acltable->mem;
acltable->magic = 0;
acltable->mem = NULL;
isc_mem_put(mem, acltable, sizeof *acltable);
return (ISC_R_SUCCESS);
}
void
dns_c_acltable_print(FILE *fp, int indent, dns_c_acltable_t *table) {
dns_c_acl_t *acl;
dns_c_acl_t *acltmp;
REQUIRE(fp != NULL);
REQUIRE(indent >= 0);
if (table == NULL) {
return;
}
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
acl = ISC_LIST_HEAD(table->acl_list);
while (acl != NULL) {
acltmp = ISC_LIST_NEXT(acl, next);
if (!acl->is_special) { /* don't print specials */
dns_c_acl_print(fp, indent, acl);
fprintf(fp, "\n");
}
acl = acltmp;
}
}
isc_result_t
dns_c_acltable_clear(dns_c_acltable_t *table) {
dns_c_acl_t *elem;
dns_c_acl_t *tmpelem;
isc_result_t r;
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
elem = ISC_LIST_HEAD(table->acl_list);
while (elem != NULL) {
tmpelem = ISC_LIST_NEXT(elem, next);
ISC_LIST_UNLINK(table->acl_list, elem, next);
r = acl_delete(&elem);
if (r != ISC_R_SUCCESS) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_CONFIG,
DNS_LOGMODULE_CONFIG,
ISC_LOG_CRITICAL,
"Failed to delete acl element");
return (r);
}
elem = tmpelem;
}
return (ISC_R_SUCCESS);
}
isc_result_t
dns_c_acltable_getacl(dns_c_acltable_t *table,
const char *aclname, dns_c_acl_t **retval)
{
dns_c_acl_t *elem;
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
REQUIRE(retval != NULL);
REQUIRE(aclname != NULL);
REQUIRE(*aclname != '\0');
elem = ISC_LIST_HEAD(table->acl_list);
while (elem != NULL) {
if (strcmp(aclname, elem->name) == 0) {
break;
}
elem = ISC_LIST_NEXT(elem, next);
}
if (elem != NULL) {
REQUIRE(DNS_C_CONFACL_VALID(elem));
*retval = elem;
}
return (elem == NULL ? ISC_R_NOTFOUND : ISC_R_SUCCESS);
}
isc_result_t
dns_c_acltable_removeacl(dns_c_acltable_t *table, const char *aclname) {
dns_c_acl_t *acl;
dns_c_acl_t *tmpacl;
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
REQUIRE(aclname != NULL);
acl = ISC_LIST_HEAD(table->acl_list);
while (acl != NULL) {
tmpacl = ISC_LIST_NEXT(acl, next);
if (strcmp(aclname, acl->name) == 0) {
ISC_LIST_UNLINK(table->acl_list, acl, next);
acl_delete(&acl);
return (ISC_R_SUCCESS);
}
acl = tmpacl;
}
return (ISC_R_NOTFOUND);
}
isc_result_t
dns_c_acl_new(dns_c_acltable_t *table, const char *aclname,
isc_boolean_t isspecial, dns_c_acl_t **newacl)
{
dns_c_acl_t *acl;
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
REQUIRE(aclname != NULL);
REQUIRE(*aclname != '\0');
REQUIRE(newacl != NULL);
acl = isc_mem_get(table->mem, sizeof *acl);
if (acl == NULL) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_CONFIG,
DNS_LOGMODULE_CONFIG, ISC_LOG_CRITICAL,
"Not enough memory");
return (ISC_R_NOMEMORY);
}
acl->mytable = table;
acl->magic = DNS_C_CONFACL_MAGIC;
acl->name = NULL;
acl->ipml = NULL;
acl->is_special = isspecial;
acl->name = isc_mem_strdup(table->mem, aclname);
if (acl->name == NULL) {
isc_mem_put(table->mem, acl, sizeof *acl);
isc_log_write(dns_lctx, DNS_LOGCATEGORY_CONFIG,
DNS_LOGMODULE_CONFIG, ISC_LOG_CRITICAL,
"Not enough memory");
return (ISC_R_NOMEMORY);
}
ISC_LIST_APPEND(table->acl_list, acl, next);
*newacl = acl;
return (ISC_R_SUCCESS);
}
void
dns_c_acl_print(FILE *fp, int indent, dns_c_acl_t *acl) {
REQUIRE(DNS_C_CONFACL_VALID(acl));
dns_c_printtabs(fp, indent);
fprintf(fp, "acl ");
if (acl->name == NULL) {
fprintf(fp, "anon-acl-%p ", acl);
} else {
fprintf(fp, "%s ", acl->name);
}
if (acl->ipml != NULL) {
dns_c_ipmatchlist_print(fp, indent + 1, acl->ipml);
} else {
fprintf(fp, "{\n");
dns_c_printtabs(fp, indent);
fprintf(fp, "}");
}
fprintf(fp, ";\n");
}
isc_result_t
dns_c_acl_setipml(dns_c_acl_t *acl,
dns_c_ipmatchlist_t *ipml, isc_boolean_t deepcopy)
{
isc_result_t res;
REQUIRE(DNS_C_CONFACL_VALID(acl));
REQUIRE(ipml != NULL);
if (acl->ipml != NULL) {
dns_c_ipmatchlist_detach(&acl->ipml);
}
if (deepcopy) {
res = dns_c_ipmatchlist_copy(acl->mytable->mem,
&acl->ipml, ipml);
} else {
acl->ipml = ipml;
res = ISC_R_SUCCESS;
}
return (res);
}
isc_result_t
dns_c_acl_getipmlexpanded(isc_mem_t *mem, dns_c_acl_t *acl,
dns_c_ipmatchlist_t **retval)
{
dns_c_ipmatchlist_t *newlist;
isc_result_t r;
REQUIRE(DNS_C_CONFACL_VALID(acl));
if (acl->ipml == NULL) {
newlist = NULL;
r = ISC_R_SUCCESS;
} else {
r = dns_c_ipmatchlist_copy(mem, &newlist, acl->ipml);
if (r != ISC_R_SUCCESS) {
return (r);
}
r = dns_c_acl_expandacls(acl->mytable, newlist);
}
*retval = newlist;
return (r);
}
/* XXX this should really be a function in the confip module */
isc_result_t
dns_c_acl_expandacls(dns_c_acltable_t *table, dns_c_ipmatchlist_t *list) {
dns_c_ipmatchelement_t *elem;
dns_c_ipmatchelement_t *tmpelem;
dns_c_acl_t *acl;
isc_result_t r;
isc_boolean_t isneg;
REQUIRE(DNS_C_CONFACLTABLE_VALID(table));
if (list == NULL) {
return (ISC_R_SUCCESS);
}
elem = ISC_LIST_HEAD(list->elements);
while (elem != NULL) {
switch (elem->type) {
case dns_c_ipmatch_indirect:
dns_c_acl_expandacls(table,
elem->u.indirect.list);
break;
case dns_c_ipmatch_acl:
r = dns_c_acltable_getacl(table,
elem->u.aclname, &acl);
if (r != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
if (acl->ipml != NULL) {
isneg = dns_c_ipmatchelement_isneg(elem);
/* XXX I this should be inserted in place and
* not appended
*/
dns_c_ipmatchlist_append(list,
acl->ipml, isneg);
}
default:
; /* Do nothing */
}
tmpelem = ISC_LIST_NEXT(elem, next);
if (elem->type == dns_c_ipmatch_acl) {
ISC_LIST_UNLINK(list->elements, elem, next);
}
elem = tmpelem;
}
return (ISC_R_SUCCESS);
}
static isc_result_t
acl_delete(dns_c_acl_t **aclptr) {
dns_c_acl_t *acl;
isc_result_t res;
isc_mem_t *mem;
REQUIRE(aclptr != NULL);
REQUIRE(*aclptr != NULL);
acl = *aclptr;
REQUIRE(DNS_C_CONFACL_VALID(acl));
mem = acl->mytable->mem;
acl->mytable = NULL;
isc_mem_free(mem, acl->name);
if (acl->ipml != NULL)
res = dns_c_ipmatchlist_detach(&acl->ipml);
else
res = ISC_R_SUCCESS;
acl->magic = 0;
isc_mem_put(mem, acl, sizeof *acl);
return (res);
}