worker, repinfo, acladdr, ede, check_result);
}
+/* Returns 1 if the ip rate limit check can happen before EDNS parsing,
+ * else 0 */
+static int
+pre_edns_ip_ratelimit_check(enum acl_access acl)
+{
+ if(acl == acl_allow_cookie) return 0;
+ return 1;
+}
+
+/* Check if the query is blocked by source IP rate limiting.
+ * Returns 1 if it passes the check, 0 otherwise. */
+static int
+check_ip_ratelimit(struct worker* worker, struct sockaddr_storage* addr,
+ socklen_t addrlen, int has_cookie, sldns_buffer* pkt)
+{
+ if(!infra_ip_ratelimit_inc(worker->env.infra_cache, addr, addrlen,
+ *worker->env.now, has_cookie,
+ worker->env.cfg->ip_ratelimit_backoff, pkt)) {
+ /* See if we can pass through with slip factor */
+ if(!has_cookie && worker->env.cfg->ip_ratelimit_factor != 0 &&
+ ub_random_max(worker->env.rnd,
+ worker->env.cfg->ip_ratelimit_factor) == 0) {
+ char addrbuf[128];
+ addr_to_str(addr, addrlen, addrbuf, sizeof(addrbuf));
+ verbose(VERB_QUERY, "ip_ratelimit allowed through for "
+ "ip address %s because of slip in "
+ "ip_ratelimit_factor", addrbuf);
+ return 1;
+ }
+ return 0;
+ }
+ return 1;
+}
+
int
worker_handle_request(struct comm_point* c, void* arg, int error,
struct comm_reply* repinfo)
struct edns_option* original_edns_list = NULL;
enum acl_access acl;
struct acl_addr* acladdr;
+ int pre_edns_ip_ratelimit = 1;
int rc = 0;
int need_drop = 0;
int is_expired_answer = 0;
}
worker->stats.num_queries++;
-
- /* check if this query should be dropped based on source ip rate limiting
- * NOTE: we always check the repinfo->client_address. IP ratelimiting is
- * implicitly disabled for proxies. */
- if(!infra_ip_ratelimit_inc(worker->env.infra_cache,
- &repinfo->client_addr, repinfo->client_addrlen,
- *worker->env.now,
- worker->env.cfg->ip_ratelimit_backoff, 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,
- worker->env.cfg->ip_ratelimit_factor) == 0) {
- char addrbuf[128];
- addr_to_str(&repinfo->client_addr,
- repinfo->client_addrlen, addrbuf,
- sizeof(addrbuf));
- verbose(VERB_QUERY, "ip_ratelimit allowed through for "
- "ip address %s because of slip in "
- "ip_ratelimit_factor", addrbuf);
- } else {
+ pre_edns_ip_ratelimit = pre_edns_ip_ratelimit_check(acl);
+
+ /* If the IP rate limiting check needs extra EDNS information (e.g.,
+ * DNS Cookies) postpone the check until after EDNS is parsed. */
+ if(pre_edns_ip_ratelimit) {
+ /* NOTE: we always check the repinfo->client_address.
+ * IP ratelimiting is implicitly disabled for proxies. */
+ if(!check_ip_ratelimit(worker, &repinfo->client_addr,
+ repinfo->client_addrlen, 0, c->buffer)) {
worker->stats.num_queries_ip_ratelimited++;
comm_point_drop_reply(repinfo);
return 0;
}
}
- /* see if query is in the cache */
if(!query_info_parse(&qinfo, c->buffer)) {
verbose(VERB_ALGO, "worker parse request: formerror.");
log_addr(VERB_CLIENT, "from", &repinfo->client_addr,
}
}
+ /* If the IP rate limiting check was postponed, check now. */
+ if(!pre_edns_ip_ratelimit) {
+ /* NOTE: we always check the repinfo->client_address.
+ * IP ratelimiting is implicitly disabled for proxies. */
+ if(!check_ip_ratelimit(worker, &repinfo->client_addr,
+ repinfo->client_addrlen, edns.cookie_valid,
+ c->buffer)) {
+ worker->stats.num_queries_ip_ratelimited++;
+ comm_point_drop_reply(repinfo);
+ return 0;
+ }
+ }
+
/* "if, else if" sequence below deals with downstream DNS Cookies */
if(acl != acl_allow_cookie)
; /* pass; No cookie downstream processing whatsoever */
The \fIallow_cookie\fR action will also accept requests over stateful
transports, regardless of the presence of an DNS Cookie and regardless of the
\fBanswer\-cookie\fR setting.
+If \fBip\-ratelimit\fR is used, clients with a valid DNS Cookie will bypass the
+ratelimit.
+If a ratelimit for such clients is still needed, \fBip\-ratelimit\-cookie\fR
+can be used instead.
.IP
By default only localhost is \fIallow\fRed, the rest is \fIrefuse\fRd.
The default is \fIrefuse\fRd, because that is protocol\-friendly. The DNS
.TP 5
.B ip\-ratelimit: \fI<number or 0>
Enable global ratelimiting of queries accepted per IP address.
-If 0, the default, it is disabled. This option is experimental at this time.
+This option is experimental at this time.
The ratelimit is in queries per second that are allowed. More queries are
completely dropped and will not receive a reply, SERVFAIL or otherwise.
IP ratelimiting happens before looking in the cache. This may be useful for
mitigating amplification attacks.
+Default is 0 (disabled).
+.TP 5
+.B ip\-ratelimit\-cookie: \fI<number or 0>
+Enable global ratelimiting of queries accepted per IP address with a valid DNS
+Cookie.
+This option is experimental at this time.
+The ratelimit is in queries per second that are allowed.
+More queries are completely dropped and will not receive a reply, SERVFAIL or
+otherwise.
+IP ratelimiting happens before looking in the cache.
+This option could be useful in combination with \fIallow_cookie\fR in an
+attempt to mitigate other amplification attacks than UDP reflections (e.g.,
+attacks targeting Unbound itself) which are already handled with DNS Cookies.
+If used, the value is suggested to be higher than \fBip\-ratelimit\fR e.g.,
+tenfold.
+Default is 0 (disabled).
.TP 5
.B ip\-ratelimit\-size: \fI<memory size>
Give the size of the data structure in which the current ongoing rates are
* in queries per second. */
int infra_ip_ratelimit = 0;
+/** ratelimit value for client ip addresses,
+ * in queries per second.
+ * For clients with a valid DNS Cookie. */
+int infra_ip_ratelimit_cookie = 0;
+
size_t
infra_sizefunc(void* k, void* ATTR_UNUSED(d))
{
return s;
}
+/* Returns 1 if the limit has not been exceeded, 0 otherwise. */
+static int
+check_ip_ratelimit(struct sockaddr_storage* addr, socklen_t addrlen,
+ struct sldns_buffer* buffer, int premax, int max, int has_cookie)
+{
+ int limit;
+
+ if(has_cookie) limit = infra_ip_ratelimit_cookie;
+ else limit = infra_ip_ratelimit;
+
+ /* Disabled */
+ if(limit == 0) return 1;
+
+ if(premax <= limit && max > limit) {
+ char client_ip[128], qnm[LDNS_MAX_DOMAINLEN+1+12+12];
+ addr_to_str(addr, addrlen, client_ip, sizeof(client_ip));
+ 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*/
+ if(strchr(qnm, '\t'))
+ *strchr(qnm, '\t') = ' ';
+ if(strchr(qnm, '\t'))
+ *strchr(qnm, '\t') = ' ';
+ verbose(VERB_OPS, "ip_ratelimit exceeded %s %d%s %s",
+ client_ip, limit,
+ has_cookie?"(cookie)":"", qnm);
+ } else {
+ verbose(VERB_OPS, "ip_ratelimit exceeded %s %d%s (no query name)",
+ client_ip, limit,
+ has_cookie?"(cookie)":"");
+ }
+ }
+ return (max <= limit);
+}
+
int infra_ip_ratelimit_inc(struct infra_cache* infra,
struct sockaddr_storage* addr, socklen_t addrlen, time_t timenow,
- int backoff, struct sldns_buffer* buffer)
+ int has_cookie, int backoff, struct sldns_buffer* buffer)
{
int max;
struct lruhash_entry* entry;
(*cur)++;
max = infra_rate_max(entry->data, timenow, backoff);
lock_rw_unlock(&entry->lock);
-
- if(premax <= infra_ip_ratelimit && max > infra_ip_ratelimit) {
- char client_ip[128], qnm[LDNS_MAX_DOMAINLEN+1+12+12];
- addr_to_str(addr, addrlen, client_ip, sizeof(client_ip));
- 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*/
- if(strchr(qnm, '\t'))
- *strchr(qnm, '\t') = ' ';
- if(strchr(qnm, '\t'))
- *strchr(qnm, '\t') = ' ';
- 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);
+ return check_ip_ratelimit(addr, addrlen, buffer, premax, max,
+ has_cookie);
}
/* create */
/** ip ratelimit, 0 is off */
extern int infra_ip_ratelimit;
+/** ip ratelimit for DNS Cookie clients, 0 is off */
+extern int infra_ip_ratelimit_cookie;
/**
* key for ip_ratelimit lookups, a source IP.
* @param addr: client address
* @param addrlen: client address length
* @param timenow: what time it is now.
+ * @param has_cookie: if the request came with a DNS Cookie.
* @param backoff: if backoff is enabled.
* @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 sockaddr_storage* addr, socklen_t addrlen, time_t timenow,
- int backoff, struct sldns_buffer* buffer);
+ int has_cookie, int backoff, struct sldns_buffer* buffer);
/**
* Get memory used by the infra cache.
00 0a ; Opcode 10
00 18 ; Length 24
31 32 33 34 35 36 37 38 ; Random bits
- 01 00 00 00 ; wrong version
+ 01 00 00 00 ; Version/Reserved
00 00 00 00 ; Timestamp
38 52 7b a8 c6 a4 ea 96 ; Hash
HEX_EDNSDATA_END
--- /dev/null
+server:
+ verbosity: 5
+ # num-threads: 1
+ interface: 127.0.0.1
+ port: @PORT@
+ use-syslog: no
+ directory: .
+ pidfile: "unbound.pid"
+ chroot: ""
+ username: ""
+ local-data: "test. IN TXT localdata"
+
+ ip-ratelimit: 1
+ ip-ratelimit-cookie: 0
+ ip-ratelimit-factor: 0
+ ip-ratelimit-backoff: yes
+ answer-cookie: yes
+ access-control: 127.0.0.0/8 allow_cookie
+
+remote-control:
+ control-enable: yes
+ control-interface: 127.0.0.1
+ # control-interface: ::1
+ control-port: @CONTROL_PORT@
+ server-key-file: "unbound_server.key"
+ server-cert-file: "unbound_server.pem"
+ control-key-file: "unbound_control.key"
+ control-cert-file: "unbound_control.pem"
--- /dev/null
+BaseName: ip_ratelimit
+Version: 1.0
+Description: Test IP source ratelimit.
+CreationDate: Tue Aug 8 00:00:00 CET 2023
+Maintainer: Yorgos Thessalonikefs
+Category:
+Component:
+CmdDepends:
+Depends:
+Help:
+Pre: ip_ratelimit.pre
+Post: ip_ratelimit.post
+Test: ip_ratelimit.test
+AuxFiles:
+Passed:
+Failure:
--- /dev/null
+# #-- ip_ratelimit.post --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# source the test var file when it's there
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+#
+# do your teardown here
+. ../common.sh
+kill_pid $UNBOUND_PID
+if test -f unbound.log; then
+ echo ">>> unbound log"
+ cat unbound.log
+fi
--- /dev/null
+# #-- ip_ratelimit.pre--#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+. ../common.sh
+get_random_port 2
+UNBOUND_PORT=$RND_PORT
+CONTROL_PORT=$(($RND_PORT + 1))
+echo "UNBOUND_PORT=$UNBOUND_PORT" >> .tpkg.var.test
+echo "CONTROL_PORT=$CONTROL_PORT" >> .tpkg.var.test
+
+# make config file
+sed -e 's/@PORT\@/'$UNBOUND_PORT'/' -e 's/@CONTROL_PORT\@/'$CONTROL_PORT'/' < ip_ratelimit.conf > ub.conf
+# start unbound in the background
+$PRE/unbound -d -c ub.conf >unbound.log 2>&1 &
+UNBOUND_PID=$!
+echo "UNBOUND_PID=$UNBOUND_PID" >> .tpkg.var.test
+
+wait_unbound_up unbound.log
+
+cat .tpkg.var.test
--- /dev/null
+# #-- ip_ratelimit.test --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+. ../common.sh
+
+get_make
+(cd $PRE; $MAKE streamtcp)
+
+# These tests rely on second time precision. To combat false negatives the
+# tests run multiple times and we allow 1/3 of the runs to fail.
+total_runs=6
+success_threshold=4 # 2/3*total_runs
+
+echo "> First get a valid cookie"
+dig @127.0.0.1 -p $UNBOUND_PORT +ednsopt=10:0102030405060708 +tcp +retry=0 +time=1 test. TXT >outfile 2>&1
+if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+fi
+if test `grep "COOKIE: " outfile | wc -l` -ne 1; then
+ echo "Could not get cookie"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+fi
+cookie=`grep "COOKIE: " outfile | cut -d ' ' -f 3`
+
+successes=0
+echo "> Three parallel queries with backoff and cookie"
+# For this test we send three parallel queries. The ratelimit should be reached
+# for that second. We send a query to verify that there is no reply.
+# Then for the next second we again send three parallel queries and we expect
+# none of them to be allowed through because of the backoff logic that keeps
+# rolling the RATE_WINDOW based on demand.
+# Again we send another query but with a valid cookie and we expect to receive
+# an answer.
+for i in $(seq 1 $total_runs); do
+ # Try to hit limit
+ $PRE/streamtcp -nu -f 127.0.0.1@$UNBOUND_PORT test. TXT IN test. TXT IN test. TXT IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ # Expect no answer because of limit
+ dig @127.0.0.1 -p $UNBOUND_PORT +retry=0 +time=1 test. TXT >outfile 2>&1
+ if test "$?" -eq 0; then
+ continue
+ fi
+ # Try to keep limit
+ $PRE/streamtcp -nu -f 127.0.0.1@$UNBOUND_PORT test. TXT IN test. TXT IN test. TXT IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ # Expect answer because of DNS cookie
+ dig @127.0.0.1 -p $UNBOUND_PORT +ednsopt=10:$cookie +retry=0 +time=1 test. TXT >outfile 2>&1
+ if test "$?" -ne 0; then
+ continue
+ fi
+ ((successes++))
+ # We don't have to wait for all the runs to complete if we know
+ # we passed the threshold.
+ if test $successes -ge $success_threshold; then
+ break
+ fi
+done
+
+if test $successes -ge $success_threshold; then
+ echo "Three parallel queries with backoff and cookie OK"
+else
+ echo "Three parallel queries with backoff and cookie NOT OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Three parallel queries with backoff and cookie NOT OK"
+ exit 1
+fi
+
+echo "> Activating ip-ratelimit-cookie"
+echo "$PRE/unbound-control -c ub.conf set_option ip-ratelimit-cookie: 1"
+$PRE/unbound-control -c ub.conf set_option ip-ratelimit-cookie: 1
+if test $? -ne 0; then
+ echo "wrong exit value after success"
+ exit 1
+fi
+
+successes=0
+echo "> Three parallel queries with backoff and cookie with ip-ratelimit-cookie"
+# This is the exact same test as above with the exception that we don't expect
+# an answer on the last query because ip-ratelimit-cookie is now enabled.
+for i in $(seq 1 $total_runs); do
+ # Try to hit limit
+ $PRE/streamtcp -nu -f 127.0.0.1@$UNBOUND_PORT test. TXT IN test. TXT IN test. TXT IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ # Expect no answer because of limit
+ dig @127.0.0.1 -p $UNBOUND_PORT +retry=0 +time=1 test. TXT >outfile 2>&1
+ if test "$?" -eq 0; then
+ continue
+ fi
+ # Try to keep limit
+ $PRE/streamtcp -nu -f 127.0.0.1@$UNBOUND_PORT test. TXT IN test. TXT IN test. TXT IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ # Expect no answer because of ip-ratelimit-cookie
+ dig @127.0.0.1 -p $UNBOUND_PORT +ednsopt=10:$cookie +retry=0 +time=1 test. TXT >outfile 2>&1
+ if test "$?" -eq 0; then
+ continue
+ fi
+ ((successes++))
+ # We don't have to wait for all the runs to complete if we know
+ # we passed the threshold.
+ if test $successes -ge $success_threshold; then
+ break
+ fi
+done
+
+if test $successes -ge $success_threshold; then
+ echo "Three parallel queries with backoff and cookie with ip-ratelimit-cookie OK"
+else
+ echo "Three parallel queries with backoff and cookie with ip-ratelimit-cookie NOT OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Three parallel queries with backoff and cookie with ip-ratelimit-cookie NOT OK"
+ exit 1
+fi
+
+exit 0
--- /dev/null
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
--- /dev/null
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
--- /dev/null
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
--- /dev/null
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
cfg->dnstap_bidirectional = 1;
cfg->dnstap_tls = 1;
cfg->disable_dnssec_lame_check = 0;
+ cfg->ip_ratelimit_cookie = 0;
cfg->ip_ratelimit = 0;
cfg->ratelimit = 0;
cfg->ip_ratelimit_slabs = 4;
else S_POW2("dnscrypt-nonce-cache-slabs:",
dnscrypt_nonce_cache_slabs)
#endif
+ else if(strcmp(opt, "ip-ratelimit-cookie:") == 0) {
+ IS_NUMBER_OR_ZERO; cfg->ip_ratelimit_cookie = atoi(val);
+ infra_ip_ratelimit_cookie=cfg->ip_ratelimit_cookie;
+ }
else if(strcmp(opt, "ip-ratelimit:") == 0) {
IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val);
infra_ip_ratelimit=cfg->ip_ratelimit;
else O_LST(opt, "python-script", python_script)
else O_LST(opt, "dynlib-file", dynlib_file)
else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check)
+ else O_DEC(opt, "ip-ratelimit-cookie", ip_ratelimit_cookie)
else O_DEC(opt, "ip-ratelimit", ip_ratelimit)
else O_DEC(opt, "ratelimit", ratelimit)
else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size)
/** ratelimit for ip addresses. 0 is off, otherwise qps (unless overridden) */
int ip_ratelimit;
+ /** ratelimit for ip addresses with a valid DNS Cookie. 0 is off,
+ * otherwise qps (unless overridden) */
+ int ip_ratelimit_cookie;
/** number of slabs for ip_ratelimit cache */
size_t ip_ratelimit_slabs;
/** memory size in bytes for ip_ratelimit cache */
YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) }
disable-dnssec-lame-check{COLON} { YDVAR(1, VAR_DISABLE_DNSSEC_LAME_CHECK) }
ip-ratelimit{COLON} { YDVAR(1, VAR_IP_RATELIMIT) }
+ip-ratelimit-cookie{COLON} { YDVAR(1, VAR_IP_RATELIMIT_COOKIE) }
ratelimit{COLON} { YDVAR(1, VAR_RATELIMIT) }
ip-ratelimit-slabs{COLON} { YDVAR(1, VAR_IP_RATELIMIT_SLABS) }
ratelimit-slabs{COLON} { YDVAR(1, VAR_RATELIMIT_SLABS) }
%token VAR_FALLBACK_ENABLED VAR_TLS_ADDITIONAL_PORT VAR_LOW_RTT VAR_LOW_RTT_PERMIL
%token VAR_FAST_SERVER_PERMIL VAR_FAST_SERVER_NUM
%token VAR_ALLOW_NOTIFY VAR_TLS_WIN_CERT VAR_TCP_CONNECTION_LIMIT
-%token VAR_ANSWER_COOKIE VAR_COOKIE_SECRET
+%token VAR_ANSWER_COOKIE VAR_COOKIE_SECRET VAR_IP_RATELIMIT_COOKIE
%token VAR_FORWARD_NO_CACHE VAR_STUB_NO_CACHE VAR_LOG_SERVFAIL VAR_DENY_ANY
%token VAR_UNKNOWN_SERVER_TIME_LIMIT VAR_LOG_TAG_QUERYREPLY
%token VAR_STREAM_WAIT_SIZE VAR_TLS_CIPHERS VAR_TLS_CIPHERSUITES VAR_TLS_USE_SNI
server_unknown_server_time_limit | server_log_tag_queryreply |
server_stream_wait_size | server_tls_ciphers |
server_tls_ciphersuites | server_tls_session_ticket_keys |
- server_answer_cookie | server_cookie_secret |
+ server_answer_cookie | server_cookie_secret | server_ip_ratelimit_cookie |
server_tls_use_sni | server_edns_client_string |
server_edns_client_string_opcode | server_nsid |
server_zonemd_permissive_mode | server_max_reuse_tcp_queries |
yyerror("expected yes or no.");
else cfg_parser->cfg->http_nodelay = (strcmp($2, "yes")==0);
free($2);
- }
+ };
server_http_notls_downstream: VAR_HTTP_NOTLS_DOWNSTREAM STRING_ARG
{
OUTYY(("P(server_http_notls_downstream:%s)\n", $2));
(strcmp($2, "yes")==0);
free($2);
}
+ ;
server_key_cache_size: VAR_KEY_CACHE_SIZE STRING_ARG
{
OUTYY(("P(server_key_cache_size:%s)\n", $2));
free($2);
}
;
+server_ip_ratelimit_cookie: VAR_IP_RATELIMIT_COOKIE STRING_ARG
+ {
+ OUTYY(("P(server_ip_ratelimit_cookie:%s)\n", $2));
+ if(atoi($2) == 0 && strcmp($2, "0") != 0)
+ yyerror("number expected");
+ else cfg_parser->cfg->ip_ratelimit_cookie = atoi($2);
+ free($2);
+ }
+ ;
server_ratelimit: VAR_RATELIMIT STRING_ARG
{
OUTYY(("P(server_ratelimit:%s)\n", $2));
if(!cfg_strlist_append_ex(&cfg_parser->cfg->python_script, $2))
yyerror("out of memory");
}
+ ;
dynlibstart: VAR_DYNLIB
{
OUTYY(("\nP(dynlib:)\n"));
if(!cfg_strlist_append_ex(&cfg_parser->cfg->dynlib_file, $2))
yyerror("out of memory");
}
+ ;
server_disable_dnssec_lame_check: VAR_DISABLE_DNSSEC_LAME_CHECK STRING_ARG
{
OUTYY(("P(disable_dnssec_lame_check:%s)\n", $2));
free($2);
}
;
-
dnsc_dnscrypt_port: VAR_DNSCRYPT_PORT STRING_ARG
{
OUTYY(("P(dnsc_dnscrypt_port:%s)\n", $2));
}
free($2);
}
+ ;
ipsetstart: VAR_IPSET
{
OUTYY(("\nP(ipset:)\n"));
projects / thirdparty / unbound.git / commitdiff
