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- Print query name with ip_ratelimit exceeded log lines.

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git-svn-id: file:///svn/unbound/trunk@5115 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2019-02-18 10:40:41 +00:00
parent a41375411e
commit 3949bf2c82
4 changed files with 26 additions and 6 deletions
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2
daemon/worker.c
View file

@ -1171,7 +1171,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
/* check if this query should be dropped based on source ip rate limiting */
if(!infra_ip_ratelimit_inc(worker->env.infra_cache, repinfo,
*worker->env.now)) {
*worker->env.now, c->buffer)) {
/* See if we are passed through with slip factor */
if(worker->env.cfg->ip_ratelimit_factor != 0 &&
ub_random_max(worker->env.rnd,

3
doc/Changelog
View file

@ -1,3 +1,6 @@
18 February 2019: Wouter
- Print query name with ip_ratelimit exceeded log lines.
14 February 2019: Wouter
- Fix capsforid canonical sort qsort callback.

23
services/cache/infra.c vendored
View file

@ -41,6 +41,8 @@
#include "config.h"
#include "sldns/rrdef.h"
#include "sldns/str2wire.h"
#include "sldns/sbuffer.h"
#include "sldns/wire2str.h"
#include "services/cache/infra.h"
#include "util/storage/slabhash.h"
#include "util/storage/lookup3.h"
@ -991,7 +993,7 @@ infra_get_mem(struct infra_cache* infra)
}
int infra_ip_ratelimit_inc(struct infra_cache* infra,
struct comm_reply* repinfo, time_t timenow)
struct comm_reply* repinfo, time_t timenow, struct sldns_buffer* buffer)
{
int max;
struct lruhash_entry* entry;
@ -1010,11 +1012,24 @@ int infra_ip_ratelimit_inc(struct infra_cache* infra,
lock_rw_unlock(&entry->lock);
if(premax < infra_ip_ratelimit && max >= infra_ip_ratelimit) {
char client_ip[128];
char client_ip[128], qnm[LDNS_MAX_DOMAINLEN+1+12+12];
addr_to_str((struct sockaddr_storage *)&repinfo->addr,
repinfo->addrlen, client_ip, sizeof(client_ip));
verbose(VERB_OPS, "ip_ratelimit exceeded %s %d",
client_ip, infra_ip_ratelimit);
qnm[0]=0;
if(sldns_buffer_limit(buffer)>LDNS_HEADER_SIZE &&
LDNS_QDCOUNT(sldns_buffer_begin(buffer))!=0) {
(void)sldns_wire2str_rrquestion_buf(
sldns_buffer_at(buffer, LDNS_HEADER_SIZE),
sldns_buffer_limit(buffer)-LDNS_HEADER_SIZE,
qnm, sizeof(qnm));
if(strlen(qnm)>0 && qnm[strlen(qnm)-1]=='\n')
qnm[strlen(qnm)-1] = 0; /*remove newline*/
verbose(VERB_OPS, "ip_ratelimit exceeded %s %d %s",
client_ip, infra_ip_ratelimit, qnm);
} else {
verbose(VERB_OPS, "ip_ratelimit exceeded %s %d (no query name)",
client_ip, infra_ip_ratelimit);
}
}
return (max <= infra_ip_ratelimit);
}

4
services/cache/infra.h vendored
View file

@ -410,10 +410,12 @@ int infra_find_ratelimit(struct infra_cache* infra, uint8_t* name,
* @param infra: infra cache
* @param repinfo: information about client
* @param timenow: what time it is now.
* @param buffer: with query for logging.
* @return 1 if it could be incremented. 0 if the increment overshot the
* ratelimit and the query should be dropped. */
int infra_ip_ratelimit_inc(struct infra_cache* infra,
struct comm_reply* repinfo, time_t timenow);
struct comm_reply* repinfo, time_t timenow,
struct sldns_buffer* buffer);
/**
* Get memory used by the infra cache.