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authorpeter <peter@FreeBSD.org>2008-07-12 05:00:28 +0000
committerpeter <peter@FreeBSD.org>2008-07-12 05:00:28 +0000
commitba8f85b49c38af7bc2a9acdef5dcde2de008d25e (patch)
treeceac31a567976fd5866cb5791b059781f6e045de /contrib/bind9/lib/dns/byaddr.c
parent0f328cea2580ffb8f9e363be671a517787111472 (diff)
downloadFreeBSD-src-ba8f85b49c38af7bc2a9acdef5dcde2de008d25e.zip
FreeBSD-src-ba8f85b49c38af7bc2a9acdef5dcde2de008d25e.tar.gz
Flatten bind9 vendor work area
Diffstat (limited to 'contrib/bind9/lib/dns/byaddr.c')
-rw-r--r--contrib/bind9/lib/dns/byaddr.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/contrib/bind9/lib/dns/byaddr.c b/contrib/bind9/lib/dns/byaddr.c
deleted file mode 100644
index 38d6e8b..0000000
--- a/contrib/bind9/lib/dns/byaddr.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000-2003 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 ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC 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: byaddr.c,v 1.34.18.3 2005/04/29 00:15:49 marka Exp $ */
-
-/*! \file */
-
-#include <config.h>
-
-#include <isc/mem.h>
-#include <isc/netaddr.h>
-#include <isc/print.h>
-#include <isc/string.h> /* Required for HP/UX (and others?) */
-#include <isc/task.h>
-#include <isc/util.h>
-
-#include <dns/byaddr.h>
-#include <dns/db.h>
-#include <dns/events.h>
-#include <dns/lookup.h>
-#include <dns/rdata.h>
-#include <dns/rdataset.h>
-#include <dns/rdatastruct.h>
-#include <dns/resolver.h>
-#include <dns/result.h>
-#include <dns/view.h>
-
-/*
- * XXXRTH We could use a static event...
- */
-
-struct dns_byaddr {
- /* Unlocked. */
- unsigned int magic;
- isc_mem_t * mctx;
- isc_mutex_t lock;
- dns_fixedname_t name;
- /* Locked by lock. */
- unsigned int options;
- dns_lookup_t * lookup;
- isc_task_t * task;
- dns_byaddrevent_t * event;
- isc_boolean_t canceled;
-};
-
-#define BYADDR_MAGIC ISC_MAGIC('B', 'y', 'A', 'd')
-#define VALID_BYADDR(b) ISC_MAGIC_VALID(b, BYADDR_MAGIC)
-
-#define MAX_RESTARTS 16
-
-static char hex_digits[] = {
- '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
-};
-
-isc_result_t
-dns_byaddr_createptrname(isc_netaddr_t *address, isc_boolean_t nibble,
- dns_name_t *name)
-{
- /*
- * We dropped bitstring labels, so all lookups will use nibbles.
- */
- UNUSED(nibble);
-
- return (dns_byaddr_createptrname2(address,
- DNS_BYADDROPT_IPV6INT, name));
-}
-
-isc_result_t
-dns_byaddr_createptrname2(isc_netaddr_t *address, unsigned int options,
- dns_name_t *name)
-{
- char textname[128];
- unsigned char *bytes;
- int i;
- char *cp;
- isc_buffer_t buffer;
- unsigned int len;
-
- REQUIRE(address != NULL);
-
- /*
- * We create the text representation and then convert to a
- * dns_name_t. This is not maximally efficient, but it keeps all
- * of the knowledge of wire format in the dns_name_ routines.
- */
-
- bytes = (unsigned char *)(&address->type);
- if (address->family == AF_INET) {
- (void)snprintf(textname, sizeof(textname),
- "%u.%u.%u.%u.in-addr.arpa.",
- (bytes[3] & 0xff),
- (bytes[2] & 0xff),
- (bytes[1] & 0xff),
- (bytes[0] & 0xff));
- } else if (address->family == AF_INET6) {
- cp = textname;
- for (i = 15; i >= 0; i--) {
- *cp++ = hex_digits[bytes[i] & 0x0f];
- *cp++ = '.';
- *cp++ = hex_digits[(bytes[i] >> 4) & 0x0f];
- *cp++ = '.';
- }
- if ((options & DNS_BYADDROPT_IPV6INT) != 0)
- strcpy(cp, "ip6.int.");
- else
- strcpy(cp, "ip6.arpa.");
- } else
- return (ISC_R_NOTIMPLEMENTED);
-
- len = (unsigned int)strlen(textname);
- isc_buffer_init(&buffer, textname, len);
- isc_buffer_add(&buffer, len);
- return (dns_name_fromtext(name, &buffer, dns_rootname,
- ISC_FALSE, NULL));
-}
-
-static inline isc_result_t
-copy_ptr_targets(dns_byaddr_t *byaddr, dns_rdataset_t *rdataset) {
- isc_result_t result;
- dns_name_t *name;
- dns_rdata_t rdata = DNS_RDATA_INIT;
-
- /*
- * The caller must be holding the byaddr's lock.
- */
-
- result = dns_rdataset_first(rdataset);
- while (result == ISC_R_SUCCESS) {
- dns_rdata_ptr_t ptr;
- dns_rdataset_current(rdataset, &rdata);
- result = dns_rdata_tostruct(&rdata, &ptr, NULL);
- if (result != ISC_R_SUCCESS)
- return (result);
- name = isc_mem_get(byaddr->mctx, sizeof(*name));
- if (name == NULL) {
- dns_rdata_freestruct(&ptr);
- return (ISC_R_NOMEMORY);
- }
- dns_name_init(name, NULL);
- result = dns_name_dup(&ptr.ptr, byaddr->mctx, name);
- dns_rdata_freestruct(&ptr);
- if (result != ISC_R_SUCCESS) {
- isc_mem_put(byaddr->mctx, name, sizeof(*name));
- return (ISC_R_NOMEMORY);
- }
- ISC_LIST_APPEND(byaddr->event->names, name, link);
- dns_rdata_reset(&rdata);
- result = dns_rdataset_next(rdataset);
- }
- if (result == ISC_R_NOMORE)
- result = ISC_R_SUCCESS;
-
- return (result);
-}
-
-static void
-lookup_done(isc_task_t *task, isc_event_t *event) {
- dns_byaddr_t *byaddr = event->ev_arg;
- dns_lookupevent_t *levent;
- isc_result_t result;
-
- REQUIRE(event->ev_type == DNS_EVENT_LOOKUPDONE);
- REQUIRE(VALID_BYADDR(byaddr));
- REQUIRE(byaddr->task == task);
-
- UNUSED(task);
-
- levent = (dns_lookupevent_t *)event;
-
- if (levent->result == ISC_R_SUCCESS) {
- result = copy_ptr_targets(byaddr, levent->rdataset);
- byaddr->event->result = result;
- } else
- byaddr->event->result = levent->result;
- isc_event_free(&event);
- isc_task_sendanddetach(&byaddr->task, (isc_event_t **)&byaddr->event);
-}
-
-static void
-bevent_destroy(isc_event_t *event) {
- dns_byaddrevent_t *bevent;
- dns_name_t *name, *next_name;
- isc_mem_t *mctx;
-
- REQUIRE(event->ev_type == DNS_EVENT_BYADDRDONE);
- mctx = event->ev_destroy_arg;
- bevent = (dns_byaddrevent_t *)event;
-
- for (name = ISC_LIST_HEAD(bevent->names);
- name != NULL;
- name = next_name) {
- next_name = ISC_LIST_NEXT(name, link);
- ISC_LIST_UNLINK(bevent->names, name, link);
- dns_name_free(name, mctx);
- isc_mem_put(mctx, name, sizeof(*name));
- }
- isc_mem_put(mctx, event, event->ev_size);
-}
-
-isc_result_t
-dns_byaddr_create(isc_mem_t *mctx, isc_netaddr_t *address, dns_view_t *view,
- unsigned int options, isc_task_t *task,
- isc_taskaction_t action, void *arg, dns_byaddr_t **byaddrp)
-{
- isc_result_t result;
- dns_byaddr_t *byaddr;
- isc_event_t *ievent;
-
- byaddr = isc_mem_get(mctx, sizeof(*byaddr));
- if (byaddr == NULL)
- return (ISC_R_NOMEMORY);
- byaddr->mctx = mctx;
- byaddr->options = options;
-
- byaddr->event = isc_mem_get(mctx, sizeof(*byaddr->event));
- if (byaddr->event == NULL) {
- result = ISC_R_NOMEMORY;
- goto cleanup_byaddr;
- }
- ISC_EVENT_INIT(byaddr->event, sizeof(*byaddr->event), 0, NULL,
- DNS_EVENT_BYADDRDONE, action, arg, byaddr,
- bevent_destroy, mctx);
- byaddr->event->result = ISC_R_FAILURE;
- ISC_LIST_INIT(byaddr->event->names);
-
- byaddr->task = NULL;
- isc_task_attach(task, &byaddr->task);
-
- result = isc_mutex_init(&byaddr->lock);
- if (result != ISC_R_SUCCESS)
- goto cleanup_event;
-
- dns_fixedname_init(&byaddr->name);
-
- result = dns_byaddr_createptrname2(address, options,
- dns_fixedname_name(&byaddr->name));
- if (result != ISC_R_SUCCESS)
- goto cleanup_lock;
-
- byaddr->lookup = NULL;
- result = dns_lookup_create(mctx, dns_fixedname_name(&byaddr->name),
- dns_rdatatype_ptr, view, 0, task,
- lookup_done, byaddr, &byaddr->lookup);
- if (result != ISC_R_SUCCESS)
- goto cleanup_lock;
-
- byaddr->canceled = ISC_FALSE;
- byaddr->magic = BYADDR_MAGIC;
-
- *byaddrp = byaddr;
-
- return (ISC_R_SUCCESS);
-
- cleanup_lock:
- DESTROYLOCK(&byaddr->lock);
-
- cleanup_event:
- ievent = (isc_event_t *)byaddr->event;
- isc_event_free(&ievent);
- byaddr->event = NULL;
-
- isc_task_detach(&byaddr->task);
-
- cleanup_byaddr:
- isc_mem_put(mctx, byaddr, sizeof(*byaddr));
-
- return (result);
-}
-
-void
-dns_byaddr_cancel(dns_byaddr_t *byaddr) {
- REQUIRE(VALID_BYADDR(byaddr));
-
- LOCK(&byaddr->lock);
-
- if (!byaddr->canceled) {
- byaddr->canceled = ISC_TRUE;
- if (byaddr->lookup != NULL)
- dns_lookup_cancel(byaddr->lookup);
- }
-
- UNLOCK(&byaddr->lock);
-}
-
-void
-dns_byaddr_destroy(dns_byaddr_t **byaddrp) {
- dns_byaddr_t *byaddr;
-
- REQUIRE(byaddrp != NULL);
- byaddr = *byaddrp;
- REQUIRE(VALID_BYADDR(byaddr));
- REQUIRE(byaddr->event == NULL);
- REQUIRE(byaddr->task == NULL);
- dns_lookup_destroy(&byaddr->lookup);
-
- DESTROYLOCK(&byaddr->lock);
- byaddr->magic = 0;
- isc_mem_put(byaddr->mctx, byaddr, sizeof(*byaddr));
-
- *byaddrp = NULL;
-}
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