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https://github.com/isc-projects/bind9.git
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add byaddr skeleton
This commit is contained in:
Bob Halley
parent
0c32f6b044
commit
34347e0844
2 changed files with 216 additions and 0 deletions
88
lib/dns/byaddr.c
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88
lib/dns/byaddr.c
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/*
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* Copyright (C) 2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include <config.h>
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#include <isc/assertions.h>
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#include <isc/error.h>
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#include <isc/result.h>
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#include <isc/task.h>
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#include <isc/util.h>
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#include <isc/mem.h>
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#include <isc/mutex.h>
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#include <dns/byaddr.h>
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#include <dns/resolver.h>
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#include <dns/view.h>
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/*
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* XXXRTH We could use a static event...
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*/
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struct dns_byaddr {
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/* Unlocked. */
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unsigned int magic;
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isc_mutex_t lock;
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dns_view_t * view;
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/* Locked by lock. */
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dns_byaddrevent_t * event;
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};
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#define BYADDR_MAGIC 0x42794164U /* ByAd. */
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#define VALID_BYADDR(b) ((b) != NULL && \
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(b)->magic == BYADDR_MAGIC)
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#ifdef notyet
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isc_result_t
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dns_byaddr_create(isc_netaddr_t *address, dns_view_t *view,
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unsigned int options, isc_task_t *task,
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isc_taskaction_t action, void *arg, dns_byaddr_t **byaddrp)
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{
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isc_result_t result;
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dns_byaddr_t *byaddr;
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byaddr = isc_mem_get(view->mctx, sizeof *byaddr);
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if (byaddr == NULL)
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return (ISC_R_NOMEMORY);
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result = isc_mutex_init(&byaddr->lock);
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if (result != ISC_R_SUCCESS)
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goto cleanup_byaddr;
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byaddr->view = NULL;
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dns_view_attach(view, &byaddr->view);
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return (ISC_R_SUCCESS);
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cleanup_lock:
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isc_mutex_destroy(&byaddr->lock);
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cleanup_byaddr:
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isc_mem_put(view->mctx, byaddr, sizeof *byaddr);
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return (result);
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}
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void
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dns_byaddr_cancel(dns_byaddr_t *byaddr) {
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}
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void
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dns_byaddr_destroy(dns_byaddr_t **byaddrp) {
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}
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#endif
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128
lib/dns/include/dns/byaddr.h
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128
lib/dns/include/dns/byaddr.h
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/*
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* Copyright (C) 2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifndef DNS_BYADDR_H
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#define DNS_BYADDR_H 1
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/*****
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***** Module Info
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*****/
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/*
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* DNS ByAddr
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*
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* The byaddr module provides reverse lookup services for IPv4 and IPv6
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* addresses.
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*
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* MP:
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* The module ensures appropriate synchronization of data structures it
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* creates and manipulates.
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*
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* Reliability:
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* No anticipated impact.
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*
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* Resources:
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* <TBS>
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*
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* Security:
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* No anticipated impact.
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*
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* Standards:
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* RFCs: 1034, 1035, 2181, <TBS>
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* Drafts: <TBS>
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*/
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#include <isc/types.h>
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#include <isc/lang.h>
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#include <isc/event.h>
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#include <isc/netaddr.h>
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#include <dns/types.h>
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#include <dns/name.h>
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#include <dns/fixedname.h>
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#include <dns/result.h>
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ISC_LANG_BEGINDECLS
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typedef struct dns_byaddrevent {
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ISC_EVENT_COMMON(struct dns_byaddrevent);
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dns_byaddr_t * byaddr;
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isc_result_t result;
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dns_fixedname_t name;
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} dns_byaddrevent_t;
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isc_result_t
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dns_byaddr_create(isc_netaddr_t *address, dns_view_t *view,
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unsigned int options, isc_task_t *task,
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isc_taskaction_t action, void *arg, dns_byaddr_t **byaddrp);
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/*
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* Find the domain name of 'address'.
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*
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* Requires:
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*
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* 'address' is a valid IPv4 or IPv6 address.
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*
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* 'view' is a valid view which has a resolver.
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*
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* 'task' is a valid task.
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*
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* byaddrp != NULL && *byaddrp == NULL
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*
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* Returns:
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*
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* ISC_R_SUCCESS
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* ISC_R_NOMEMORY
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*
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* Any resolver-related error (e.g. ISC_R_SHUTTINGDOWN) may also be
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* returned.
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*/
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void
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dns_byaddr_cancel(dns_byaddr_t *byaddr);
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/*
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* Cancel 'byaddr'.
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*
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* Notes:
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*
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* If 'byaddr' has not completed, post its BYADDRDONE event with a
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* result code of ISC_R_CANCELED.
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*
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* Requires:
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*
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* 'byaddr' is a valid byaddr.
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*/
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void
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dns_byaddr_destroy(dns_byaddr_t **byaddrp);
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/*
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* Destroy 'byaddr'.
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*
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* Requires:
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*
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* '*byaddrp' is a valid byaddr.
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*
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* The caller has received the BYADDRDONE event (either because the
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* byaddr completed or because dns_byaddr_cancel() was called).
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*
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* Ensures:
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*
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* *byaddrp == NULL.
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*/
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ISC_LANG_ENDDECLS
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#endif /* DNS_BYADDR_H */
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