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Code Issues Releases Wiki Activity

reject multicast packets

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This commit is contained in:
Michael Graff
2000-06-15 18:26:28 +00:00
parent f64ded0ac7
commit c01c401217
2 changed files with 13 additions and 1 deletions
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11
bin/named/client.c
View File

@@ -825,6 +825,10 @@ client_request(isc_task_t *task, isc_event_t *event) {
} else { } else {
client->attributes &= ~NS_CLIENTATTR_PKTINFO; client->attributes &= ~NS_CLIENTATTR_PKTINFO;
} }
if ((devent->attributes & ISC_SOCKEVENTATTR_MULTICAST) != 0)
client->attributes |= NS_CLIENTATTR_MULTICAST;
else
client->attributes &= ~NS_CLIENTATTR_MULTICAST;
} else { } else {
INSIST(TCP_CLIENT(client)); INSIST(TCP_CLIENT(client));
REQUIRE(event->ev_type == DNS_EVENT_TCPMSG); REQUIRE(event->ev_type == DNS_EVENT_TCPMSG);
@@ -860,6 +864,13 @@ client_request(isc_task_t *task, isc_event_t *event) {
goto cleanup_serverlock; goto cleanup_serverlock;
} }
if ((client->attributes & NS_CLIENTATTR_MULTICAST) != 0) {
ns_client_log(client, NS_LOGCATEGORY_CLIENT,
NS_LOGMODULE_CLIENT, ISC_LOG_DEBUG(2),
"ignoring multicast request");
ns_client_error(client, DNS_R_REFUSED);
}
result = dns_message_parse(client->message, buffer, ISC_FALSE); result = dns_message_parse(client->message, buffer, ISC_FALSE);
if (result != ISC_R_SUCCESS) { if (result != ISC_R_SUCCESS) {
ns_client_error(client, result); ns_client_error(client, result);

1
bin/named/include/named/client.h
View File

@@ -132,6 +132,7 @@ struct ns_client {
#define NS_CLIENTATTR_TCP 0x01 #define NS_CLIENTATTR_TCP 0x01
#define NS_CLIENTATTR_RA 0x02 /* Client gets recusive service */ #define NS_CLIENTATTR_RA 0x02 /* Client gets recusive service */
#define NS_CLIENTATTR_PKTINFO 0x04 /* pktinfo is valid */ #define NS_CLIENTATTR_PKTINFO 0x04 /* pktinfo is valid */
#define NS_CLIENTATTR_MULTICAST 0x08 /* recv'd from multicast */
/*** /***
*** Functions *** Functions