summaryrefslogtreecommitdiff
path: root/data/libresolv/dnsinfo_copy.c
diff options
context:
space:
mode:
Diffstat (limited to 'data/libresolv/dnsinfo_copy.c')
-rw-r--r--data/libresolv/dnsinfo_copy.c338
1 files changed, 0 insertions, 338 deletions
diff --git a/data/libresolv/dnsinfo_copy.c b/data/libresolv/dnsinfo_copy.c
deleted file mode 100644
index 882b697b9..000000000
--- a/data/libresolv/dnsinfo_copy.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-/*
- * Modification History
- *
- * March 9, 2004 Allan Nathanson <ajn@apple.com>
- * - initial revision
- */
-
-#include <stdlib.h>
-#include <mach/mach.h>
-#include <mach/mach_error.h>
-
-#include "dnsinfo.h"
-#include "dnsinfo_private.h"
-#include "shared_dns_info.h"
-
-
-static boolean_t
-add_list(void **padding, uint32_t *n_padding, int32_t count, int32_t size, void **list)
-{
- int32_t need;
-
- need = count * size;
- if (need > *n_padding) {
- return FALSE;
- }
-
- *list = (need == 0) ? NULL : *padding;
- *padding += need;
- *n_padding -= need;
- return TRUE;
-}
-
-
-static _dns_config_buf_t *
-copy_dns_info()
-{
- uint8_t *buf = NULL;
- dnsDataOut_t dataRef = NULL;
- mach_msg_type_number_t dataLen = 0;
- mach_port_t server;
- kern_return_t status;
-
- server = _dns_configuration_server_port();
- if (server == MACH_PORT_NULL) {
- return NULL;
- }
-
- status = shared_dns_infoGet(server, &dataRef, &dataLen);
- (void)mach_port_deallocate(mach_task_self(), server);
- if (status != KERN_SUCCESS) {
- mach_error("shared_dns_infoGet():", status);
- return NULL;
- }
-
- if (dataRef != NULL) {
- if (dataLen >= sizeof(_dns_config_buf_t)) {
- _dns_config_buf_t *config = (_dns_config_buf_t *)dataRef;
- uint32_t len;
- uint32_t n_padding = ntohl(config->n_padding);
-
- len = dataLen + n_padding;
- buf = malloc(len);
- bcopy((void *)dataRef, buf, dataLen);
- bzero(&buf[dataLen], n_padding);
- }
-
- status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
- if (status != KERN_SUCCESS) {
- mach_error("vm_deallocate():", status);
- free(buf);
- return NULL;
- }
- }
-
- return (_dns_config_buf_t *)buf;
-}
-
-
-static dns_resolver_t *
-expand_resolver(_dns_resolver_buf_t *buf, uint32_t n_buf, void **padding, uint32_t *n_padding)
-{
- dns_attribute_t *attribute;
- uint32_t n_attribute;
- int32_t n_nameserver = 0;
- int32_t n_search = 0;
- int32_t n_sortaddr = 0;
- dns_resolver_t *resolver = (dns_resolver_t *)&buf->resolver;
-
- if (n_buf < sizeof(_dns_resolver_buf_t)) {
- goto error;
- }
-
- // initialize domain
-
- resolver->domain = NULL;
-
- // initialize nameserver list
-
- resolver->n_nameserver = ntohl(resolver->n_nameserver);
- if (!add_list(padding,
- n_padding,
- resolver->n_nameserver,
- sizeof(struct sockaddr *),
- (void **)&resolver->nameserver)) {
- goto error;
- }
-
- // initialize port
-
- resolver->port = ntohs(resolver->port);
-
- // initialize search list
-
- resolver->n_search = ntohl(resolver->n_search);
- if (!add_list(padding,
- n_padding,
- resolver->n_search,
- sizeof(char *),
- (void **)&resolver->search)) {
- goto error;
- }
-
- // initialize sortaddr list
-
- resolver->n_sortaddr = ntohl(resolver->n_sortaddr);
- if (!add_list(padding,
- n_padding,
- resolver->n_sortaddr,
- sizeof(dns_sortaddr_t *),
- (void **)&resolver->sortaddr)) {
- goto error;
- }
-
- // initialize options
-
- resolver->options = NULL;
-
- // initialize timeout
-
- resolver->timeout = ntohl(resolver->timeout);
-
- // initialize search_order
-
- resolver->search_order = ntohl(resolver->search_order);
-
- // process resolver buffer "attribute" data
-
- n_attribute = n_buf - sizeof(_dns_resolver_buf_t);
- attribute = (dns_attribute_t *)&buf->attribute[0];
- if (n_attribute != ntohl(buf->n_attribute)) {
- goto error;
- }
-
- while (n_attribute >= sizeof(dns_attribute_t)) {
- int32_t attribute_length = ntohl(attribute->length);
-
- switch (ntohl(attribute->type)) {
- case RESOLVER_ATTRIBUTE_DOMAIN :
- resolver->domain = (char *)&attribute->attribute[0];
- break;
-
- case RESOLVER_ATTRIBUTE_ADDRESS :
- resolver->nameserver[n_nameserver++] = (struct sockaddr *)&attribute->attribute[0];
- break;
-
- case RESOLVER_ATTRIBUTE_SEARCH :
- resolver->search[n_search++] = (char *)&attribute->attribute[0];
- break;
-
- case RESOLVER_ATTRIBUTE_SORTADDR :
- resolver->sortaddr[n_sortaddr++] = (dns_sortaddr_t *)&attribute->attribute[0];
- break;
-
- case RESOLVER_ATTRIBUTE_OPTIONS :
- resolver->options = (char *)&attribute->attribute[0];
- break;
-
- default :
- break;
- }
-
- attribute = (dns_attribute_t *)((void *)attribute + attribute_length);
- n_attribute -= attribute_length;
- }
-
- if ((n_nameserver != resolver->n_nameserver) ||
- (n_search != resolver->n_search ) ||
- (n_sortaddr != resolver->n_sortaddr )) {
- goto error;
- }
-
- return resolver;
-
- error :
-
- return NULL;
-}
-
-
-static dns_config_t *
-expand_config(_dns_config_buf_t *buf)
-{
- dns_attribute_t *attribute;
- dns_config_t *config = (dns_config_t *)buf;
- uint32_t n_attribute;
- uint32_t n_padding;
- int32_t n_resolver = 0;
- void *padding;
-
- // establish padding
-
- padding = &buf->attribute[ntohl(buf->n_attribute)];
- n_padding = ntohl(buf->n_padding);
-
- // initialize resolver list
-
- config->n_resolver = ntohl(config->n_resolver);
- if (!add_list(&padding,
- &n_padding,
- config->n_resolver,
- sizeof(dns_resolver_t *),
- (void **)&config->resolver)) {
- goto error;
- }
-
- // process configuration buffer "attribute" data
-
- n_attribute = ntohl(buf->n_attribute);
- attribute = (dns_attribute_t *)&buf->attribute[0];
-
- while (n_attribute >= sizeof(dns_attribute_t)) {
- int32_t attribute_length = ntohl(attribute->length);
-
- switch (ntohl(attribute->type)) {
- case CONFIG_ATTRIBUTE_RESOLVER : {
- dns_resolver_t *resolver;
-
- // expand resolver buffer
-
- resolver = expand_resolver((_dns_resolver_buf_t *)&attribute->attribute[0],
- attribute_length - sizeof(dns_attribute_t),
- &padding,
- &n_padding);
- if (resolver == NULL) {
- goto error;
- }
-
- // add resolver to config list
-
- config->resolver[n_resolver++] = resolver;
-
- break;
- }
-
- default :
- break;
- }
-
- attribute = (dns_attribute_t *)((void *)attribute + attribute_length);
- n_attribute -= attribute_length;
- }
-
- if (n_resolver != config->n_resolver) {
- goto error;
- }
-
- return config;
-
- error :
-
- return NULL;
-}
-
-
-__private_extern__
-const char *
-dns_configuration_notify_key()
-{
- return _dns_configuration_notify_key();
-}
-
-
-__private_extern__
-dns_config_t *
-dns_configuration_copy()
-{
- _dns_config_buf_t *buf;
- dns_config_t *config;
-
- buf = copy_dns_info();
- if (buf == NULL) {
- return NULL;
- }
-
- config = expand_config(buf);
- if (config == NULL) {
- free(buf);
- return NULL;
- }
-
- return config;
-}
-
-
-__private_extern__
-void
-dns_configuration_free(dns_config_t *config)
-{
- if (config == NULL) {
- return;
- }
-
- free((void *)config);
- return;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 05:06:38 +0000