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Add a answer-cookie named config option

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This commit is contained in:
Mukund Sivaraman 2018-03-19 18:09:05 +05:30 committed by Mark Andrews
parent 2836d8e952
commit 2930507357
6 changed files with 12 additions and 1 deletions
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1
bin/named/config.c
View file

@ -47,6 +47,7 @@
/*% default configuration */
static char defaultconf[] = "\
options {\n\
answer-cookie true;\n\
automatic-interface-scan yes;\n\
bindkeys-file \"" NAMED_SYSCONFDIR "/bind.keys\";\n\
# blackhole {none;};\n"

5
bin/named/server.c
View file

@ -8829,6 +8829,11 @@ load_configuration(const char *filename, named_server_t *server,
server->flushonshutdown = ISC_FALSE;
}
obj = NULL;
result = named_config_get(maps, "answer-cookie", &obj);
INSIST(result == ISC_R_SUCCESS);
server->sctx->answercookie = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "cookie-algorithm", &obj);
INSIST(result == ISC_R_SUCCESS);

1
lib/isccfg/namedconf.c
View file

@ -1027,6 +1027,7 @@ static cfg_type_t cfg_type_fstrm_model = {
*/
static cfg_clausedef_t
options_clauses[] = {
{ "answer-cookie", &cfg_type_boolean, CFG_CLAUSEFLAG_DEPRECATED },
{ "automatic-interface-scan", &cfg_type_boolean, 0 },
{ "avoid-v4-udp-ports", &cfg_type_bracketed_portlist, 0 },
{ "avoid-v6-udp-ports", &cfg_type_bracketed_portlist, 0 },

4
lib/ns/client.c
View file

@ -1912,7 +1912,9 @@ process_cookie(ns_client_t *client, isc_buffer_t *buf, size_t optlen) {
/*
* If we have already seen a cookie option skip this cookie option.
*/
if ((client->attributes & NS_CLIENTATTR_WANTCOOKIE) != 0) {
if ((!client->sctx->answercookie) ||
(client->attributes & NS_CLIENTATTR_WANTCOOKIE) != 0)
{
isc_buffer_forward(buf, (unsigned int)optlen);
return;
}

1
lib/ns/include/ns/server.h
View file

@ -76,6 +76,7 @@ struct ns_server {
unsigned char secret[32];
ns_cookiealg_t cookiealg;
ns_altsecretlist_t altsecrets;
isc_boolean_t answercookie;
/*% Quotas */
isc_quota_t recursionquota;

1
lib/ns/server.c
View file

@ -104,6 +104,7 @@ ns_server_create(isc_mem_t *mctx, isc_entropy_t *entropy,
sctx->gethostname = NULL;
sctx->matchingview = matchingview;
sctx->answercookie = ISC_TRUE;
ISC_LIST_INIT(sctx->altsecrets);