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Code Issues Releases Wiki Activity

1745. [bug] Dig/host/nslookup accept replies from link locals

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regardless of scope if no scope was specified when
                        query was sent. [RT #12745]
This commit is contained in:
Mark Andrews 2004-11-22 23:29:10 +00:00
parent b9f6bf5fdf
commit c1807114ce
4 changed files with 62 additions and 41 deletions
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4
CHANGES
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@ -73,7 +73,9 @@
1746. [func] Make public the function to read a key file,
dst_key_read_public(). [RT #12450]
1745. [placeholder] rt12745
1745. [bug] Dig/host/nslookup accept replies from link locals
regardless of scope if no scope was specified when
query was sent. [RT #12745]
1744. [bug] If tuple2msgname() failed to convert a tuple to
a name a REQUIRE could be triggered. [RT #12796]

8
bin/dig/dighost.c
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@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dighost.c,v 1.271 2004/10/21 01:44:23 marka Exp $ */
/* $Id: dighost.c,v 1.272 2004/11/22 23:29:09 marka Exp $ */
/*
* Notice to programmers: Do not use this code as an example of how to
@ -2645,7 +2645,11 @@ recv_done(isc_task_t *task, isc_event_t *event) {
ISC_LIST_DEQUEUE(sevent->bufferlist, &query->recvbuf, link);
if (!l->tcp_mode &&
!isc_sockaddr_equal(&sevent->address, &query->sockaddr)) {
!isc_sockaddr_compare(&sevent->address, &query->sockaddr,
ISC_SOCKADDR_CMPADDR|
ISC_SOCKADDR_CMPPORT|
ISC_SOCKADDR_CMPSCOPE|
ISC_SOCKADDR_CMPSCOPEZERO)) {
char buf1[ISC_SOCKADDR_FORMATSIZE];
char buf2[ISC_SOCKADDR_FORMATSIZE];
isc_sockaddr_t any;

21
lib/isc/include/isc/sockaddr.h
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@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: sockaddr.h,v 1.42 2004/03/05 05:11:01 marka Exp $ */
/* $Id: sockaddr.h,v 1.43 2004/11/22 23:29:10 marka Exp $ */
#ifndef ISC_SOCKADDR_H
#define ISC_SOCKADDR_H 1
@ -36,8 +36,27 @@ struct isc_sockaddr {
typedef ISC_LIST(struct isc_sockaddr) isc_sockaddrlist_t;
#define ISC_SOCKADDR_CMPADDR 0x0001 /* compare the address
* sin_addr/sin6_addr */
#define ISC_SOCKADDR_CMPPORT 0x0002 /* compare the port
* sin_port/sin6_port */
#define ISC_SOCKADDR_CMPSCOPE 0x0004 /* compare the scope
* sin6_scope */
#define ISC_SOCKADDR_CMPSCOPEZERO 0x0008 /* when comparing scopes
* zero scopes always match */
ISC_LANG_BEGINDECLS
isc_boolean_t
isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
unsigned int flags);
/*
* Compare the elements of the two address ('a' and 'b') as specified
* by 'flags' and report if they are equal or not.
*
* 'flags' is set from ISC_SOCKADDR_CMP*.
*/
isc_boolean_t
isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b);
/*

70
lib/isc/sockaddr.c
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@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: sockaddr.c,v 1.60 2004/05/15 03:37:33 jinmei Exp $ */
/* $Id: sockaddr.c,v 1.61 2004/11/22 23:29:10 marka Exp $ */
#include <config.h>
@ -33,6 +33,21 @@
isc_boolean_t
isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
return (isc_sockaddr_compare(a, b, ISC_SOCKADDR_CMPADDR|
ISC_SOCKADDR_CMPPORT|
ISC_SOCKADDR_CMPSCOPE));
}
isc_boolean_t
isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
return (isc_sockaddr_compare(a, b, ISC_SOCKADDR_CMPADDR|
ISC_SOCKADDR_CMPSCOPE));
}
isc_boolean_t
isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
unsigned int flags)
{
REQUIRE(a != NULL && b != NULL);
if (a->length != b->length)
@ -47,21 +62,33 @@ isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
return (ISC_FALSE);
switch (a->type.sa.sa_family) {
case AF_INET:
if (memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
sizeof(a->type.sin.sin_addr)) != 0)
return (ISC_FALSE);
if (a->type.sin.sin_port != b->type.sin.sin_port)
if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
a->type.sin.sin_port != b->type.sin.sin_port)
return (ISC_FALSE);
break;
case AF_INET6:
if (memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
sizeof(a->type.sin6.sin6_addr)) != 0)
return (ISC_FALSE);
#ifdef ISC_PLATFORM_HAVESCOPEID
if (a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id)
/*
* If ISC_SOCKADDR_CMPSCOPEZERO is set then don't return
* ISC_FALSE if one of the scopes in zero.
*/
if ((flags & ISC_SOCKADDR_CMPSCOPE) != 0 &&
a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id &&
((flags & ISC_SOCKADDR_CMPSCOPEZERO) == 0 ||
(a->type.sin6.sin6_scope_id != 0 &&
b->type.sin6.sin6_scope_id != 0)))
return (ISC_FALSE);
#endif
if (a->type.sin6.sin6_port != b->type.sin6.sin6_port)
if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
a->type.sin6.sin6_port != b->type.sin6.sin6_port)
return (ISC_FALSE);
break;
default:
@ -71,37 +98,6 @@ isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
return (ISC_TRUE);
}
isc_boolean_t
isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
REQUIRE(a != NULL && b != NULL);
if (a->length != b->length)
return (ISC_FALSE);
if (a->type.sa.sa_family != b->type.sa.sa_family)
return (ISC_FALSE);
switch (a->type.sa.sa_family) {
case AF_INET:
if (memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
sizeof(a->type.sin.sin_addr)) != 0)
return (ISC_FALSE);
break;
case AF_INET6:
if (memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
sizeof(a->type.sin6.sin6_addr)) != 0)
return (ISC_FALSE);
#ifdef ISC_PLATFORM_HAVESCOPEID
if (a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id)
return (ISC_FALSE);
#endif
break;
default:
if (memcmp(&a->type, &b->type, a->length) != 0)
return (ISC_FALSE);
}
return (ISC_TRUE);
}
isc_boolean_t
isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
unsigned int prefixlen)