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1075. [bug] Out-of-range network prefix lengths were not

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reported. [RT #1954]
This commit is contained in:
Andreas Gustafsson
2001-10-26 19:35:03 +00:00
parent 469a5f80ae
commit c8ab83c08e
2 changed files with 23 additions and 14 deletions
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3
CHANGES
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@@ -1,3 +1,6 @@
1075. [bug] Out-of-range network prefix lengths were not
reported. [RT #1954]
1074. [bug] Running out of memory in dump_rdataset() could
cause an assertion failure. [RT #1946]

34
lib/isccfg/parser.c
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: parser.c,v 1.84 2001/10/25 04:57:46 marka Exp $ */
/* $Id: parser.c,v 1.85 2001/10/26 19:35:03 gson Exp $ */
#include <config.h>
@@ -3002,10 +3002,22 @@ parse_netprefix(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
cfg_obj_t *obj = NULL;
isc_result_t result;
isc_netaddr_t netaddr;
unsigned int prefixlen;
unsigned int addrlen, prefixlen;
UNUSED(type);
CHECK(get_addr(pctx, V4OK|V4PREFIXOK|V6OK, &netaddr));
switch (netaddr.family) {
case AF_INET:
addrlen = 32;
break;
case AF_INET6:
addrlen = 128;
break;
default:
addrlen = 0;
INSIST(0);
break;
}
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == '/') {
@@ -3017,19 +3029,13 @@ parse_netprefix(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (ISC_R_UNEXPECTEDTOKEN);
}
prefixlen = pctx->token.value.as_ulong;
} else {
switch (netaddr.family) {
case AF_INET:
prefixlen = 32;
break;
case AF_INET6:
prefixlen = 128;
break;
default:
prefixlen = 0;
INSIST(0);
break;
if (prefixlen > addrlen) {
parser_error(pctx, LOG_NOPREP,
"invalid prefix length");
return (ISC_R_RANGE);
}
} else {
prefixlen = addrlen;
}
CHECK(create_cfgobj(pctx, &cfg_type_netprefix, &obj));
obj->value.netprefix.address = netaddr;