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config.c
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config.c
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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <bind.keys.h>
#include <inttypes.h>
#include <stdlib.h>
#include <isc/buffer.h>
#include <isc/log.h>
#include <isc/mem.h>
#include <isc/netmgr.h>
#include <isc/parseint.h>
#include <isc/region.h>
#include <isc/result.h>
#include <isc/sockaddr.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/fixedname.h>
#include <dns/name.h>
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
#include <dns/tsig.h>
#include <dns/zone.h>
#include <dst/dst.h>
#include <isccfg/grammar.h>
#include <isccfg/namedconf.h>
#include <named/config.h>
#include <named/globals.h>
/*% 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"
" cookie-algorithm siphash24;\n"
" coresize default;\n\
datasize default;\n"
"\
# directory <none>\n\
dnssec-policy \"none\";\n\
dump-file \"named_dump.db\";\n\
edns-udp-size 1232;\n\
files unlimited;\n"
#if defined(HAVE_GEOIP2)
"\
geoip-directory \"" MAXMINDDB_PREFIX "/share/GeoIP\";\n"
#elif defined(HAVE_GEOIP2)
"\
geoip-directory \".\";\n"
#endif /* if defined(HAVE_GEOIP2) */
"\
heartbeat-interval 60;\n\
interface-interval 60;\n\
listen-on {any;};\n\
listen-on-v6 {any;};\n\
# lock-file \"" NAMED_LOCALSTATEDIR "/run/named/named.lock\";\n\
match-mapped-addresses no;\n\
max-ixfr-ratio 100%;\n\
max-rsa-exponent-size 0; /* no limit */\n\
max-udp-size 1232;\n\
memstatistics-file \"named.memstats\";\n\
nocookie-udp-size 4096;\n\
notify-rate 20;\n\
nta-lifetime 3600;\n\
nta-recheck 300;\n\
# pid-file \"" NAMED_LOCALSTATEDIR "/run/named/named.pid\"; \n\
port 53;\n"
#if HAVE_SO_REUSEPORT_LB
"\
reuseport yes;\n"
#else
"\
reuseport no;\n"
#endif
"\
tls-port 853;\n"
#if HAVE_LIBNGHTTP2
"\
http-port 80;\n\
https-port 443;\n\
http-listener-clients 300;\n\
http-streams-per-connection 100;\n"
#endif
"\
prefetch 2 9;\n\
recursing-file \"named.recursing\";\n\
recursive-clients 1000;\n\
request-nsid false;\n\
reserved-sockets 512;\n\
resolver-query-timeout 10;\n\
rrset-order { order random; };\n\
secroots-file \"named.secroots\";\n\
send-cookie true;\n\
serial-query-rate 20;\n\
server-id none;\n\
session-keyalg hmac-sha256;\n\
# session-keyfile \"" NAMED_LOCALSTATEDIR "/run/named/session.key\";\n\
session-keyname local-ddns;\n\
stacksize default;\n\
startup-notify-rate 20;\n\
statistics-file \"named.stats\";\n\
tcp-advertised-timeout 300;\n\
tcp-clients 150;\n\
tcp-idle-timeout 300;\n\
tcp-initial-timeout 300;\n\
tcp-keepalive-timeout 300;\n\
tcp-listen-queue 10;\n\
tcp-receive-buffer 0;\n\
tcp-send-buffer 0;\n\
# tkey-dhkey <none>\n\
# tkey-domain <none>\n\
# tkey-gssapi-credential <none>\n\
transfer-message-size 20480;\n\
transfers-in 10;\n\
transfers-out 10;\n\
transfers-per-ns 2;\n\
trust-anchor-telemetry yes;\n\
udp-receive-buffer 0;\n\
udp-send-buffer 0;\n\
\n\
/* view */\n\
allow-new-zones no;\n\
allow-notify {none;};\n\
allow-query-cache { localnets; localhost; };\n\
allow-query-cache-on { any; };\n\
allow-recursion { localnets; localhost; };\n\
allow-recursion-on { any; };\n\
allow-update-forwarding {none;};\n\
auth-nxdomain false;\n\
check-dup-records warn;\n\
check-mx warn;\n\
check-names primary fail;\n\
check-names response ignore;\n\
check-names secondary warn;\n\
check-spf warn;\n\
clients-per-query 10;\n\
dnssec-accept-expired no;\n\
dnssec-validation " VALIDATION_DEFAULT "; \n"
#ifdef HAVE_DNSTAP
" dnstap-identity hostname;\n"
#endif /* ifdef HAVE_DNSTAP */
"\
fetch-quota-params 100 0.1 0.3 0.7;\n\
fetches-per-server 0;\n\
fetches-per-zone 0;\n\
glue-cache yes;\n\
lame-ttl 0;\n"
#ifdef HAVE_LMDB
" lmdb-mapsize 32M;\n"
#endif /* ifdef HAVE_LMDB */
" max-cache-size 90%;\n\
max-cache-ttl 604800; /* 1 week */\n\
max-clients-per-query 100;\n\
max-ncache-ttl 10800; /* 3 hours */\n\
max-recursion-depth 7;\n\
max-recursion-queries 100;\n\
max-stale-ttl 86400; /* 1 day */\n\
message-compression yes;\n\
min-ncache-ttl 0; /* 0 hours */\n\
min-cache-ttl 0; /* 0 seconds */\n\
minimal-any false;\n\
minimal-responses no-auth-recursive;\n\
notify-source *;\n\
notify-source-v6 *;\n\
nsec3-test-zone no;\n\
parental-source *;\n\
parental-source-v6 *;\n\
provide-ixfr true;\n\
qname-minimization relaxed;\n\
query-source address *;\n\
query-source-v6 address *;\n\
recursion true;\n\
request-expire true;\n\
request-ixfr true;\n\
require-server-cookie no;\n\
resolver-nonbackoff-tries 3;\n\
resolver-retry-interval 800; /* in milliseconds */\n\
root-key-sentinel yes;\n\
servfail-ttl 1;\n\
# sortlist <none>\n\
stale-answer-client-timeout off;\n\
stale-answer-enable false;\n\
stale-answer-ttl 30; /* 30 seconds */\n\
stale-cache-enable false;\n\
stale-refresh-time 30; /* 30 seconds */\n\
synth-from-dnssec yes;\n\
# topology <none>\n\
transfer-format many-answers;\n\
v6-bias 50;\n\
zero-no-soa-ttl-cache no;\n\
\n\
/* zone */\n\
allow-query {any;};\n\
allow-query-on {any;};\n\
allow-transfer {any;};\n\
# also-notify <none>\n\
alt-transfer-source *;\n\
alt-transfer-source-v6 *;\n\
check-integrity yes;\n\
check-mx-cname warn;\n\
check-sibling yes;\n\
check-srv-cname warn;\n\
check-wildcard yes;\n\
dialup no;\n\
dnssec-dnskey-kskonly yes;\n\
dnssec-loadkeys-interval 60;\n\
dnssec-secure-to-insecure no;\n\
dnssec-update-mode maintain;\n\
# forward <none>\n\
# forwarders <none>\n\
# inline-signing no;\n\
ixfr-from-differences false;\n\
max-journal-size default;\n\
max-records 0;\n\
max-refresh-time 2419200; /* 4 weeks */\n\
max-retry-time 1209600; /* 2 weeks */\n\
max-transfer-idle-in 60;\n\
max-transfer-idle-out 60;\n\
max-transfer-time-in 120;\n\
max-transfer-time-out 120;\n\
min-refresh-time 300;\n\
min-retry-time 500;\n\
multi-master no;\n\
notify yes;\n\
notify-delay 5;\n\
notify-to-soa no;\n\
serial-update-method increment;\n\
sig-signing-nodes 100;\n\
sig-signing-signatures 10;\n\
sig-signing-type 65534;\n\
sig-validity-interval 30; /* days */\n\
dnskey-sig-validity 0; /* default: sig-validity-interval */\n\
transfer-source *;\n\
transfer-source-v6 *;\n\
try-tcp-refresh yes; /* BIND 8 compat */\n\
update-check-ksk yes;\n\
zero-no-soa-ttl yes;\n\
zone-statistics terse;\n\
};\n\
"
"#\n\
# Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
#\n\
view \"_bind\" chaos {\n\
recursion no;\n\
notify no;\n\
allow-new-zones no;\n\
max-cache-size 2M;\n\
\n\
# Prevent use of this zone in DNS amplified reflection DoS attacks\n\
rate-limit {\n\
responses-per-second 3;\n\
slip 0;\n\
min-table-size 10;\n\
};\n\
\n\
zone \"version.bind\" chaos {\n\
type primary;\n\
database \"_builtin version\";\n\
};\n\
\n\
zone \"hostname.bind\" chaos {\n\
type primary;\n\
database \"_builtin hostname\";\n\
};\n\
\n\
zone \"authors.bind\" chaos {\n\
type primary;\n\
database \"_builtin authors\";\n\
};\n\
\n\
zone \"id.server\" chaos {\n\
type primary;\n\
database \"_builtin id\";\n\
};\n\
};\n\
"
"#\n\
# Default trusted key(s), used if \n\
# \"dnssec-validation auto;\" is set and\n\
# " NAMED_SYSCONFDIR "/bind.keys doesn't exist).\n\
#\n\
# BEGIN TRUST ANCHORS\n"
/* Imported from bind.keys.h: */
TRUST_ANCHORS
"# END TRUST ANCHORS\n\
\n\
primaries " DEFAULT_IANA_ROOT_ZONE_PRIMARIES " {\n\
2001:500:200::b; # b.root-servers.net\n\
2001:500:2::c; # c.root-servers.net\n\
2001:500:2f::f; # f.root-servers.net\n\
2001:500:12::d0d; # g.root-servers.net\n\
2001:7fd::1; # k.root-servers.net\n\
2620:0:2830:202::132; # xfr.cjr.dns.icann.org\n\
2620:0:2d0:202::132; # xfr.lax.dns.icann.org\n\
199.9.14.201; # b.root-servers.net\n\
192.33.4.12; # c.root-servers.net\n\
192.5.5.241; # f.root-servers.net\n\
192.112.36.4; # g.root-servers.net\n\
193.0.14.129; # k.root-servers.net\n\
192.0.47.132; # xfr.cjr.dns.icann.org\n\
192.0.32.132; # xfr.lax.dns.icann.org\n\
};\n\
";
isc_result_t
named_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
isc_buffer_t b;
isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
isc_buffer_add(&b, sizeof(defaultconf) - 1);
return (cfg_parse_buffer(parser, &b, __FILE__, 0, &cfg_type_namedconf,
CFG_PCTX_NODEPRECATED, conf));
}
isc_result_t
named_config_get(cfg_obj_t const *const *maps, const char *name,
const cfg_obj_t **obj) {
int i;
for (i = 0; maps[i] != NULL; i++) {
if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS) {
return (ISC_R_SUCCESS);
}
}
return (ISC_R_NOTFOUND);
}
isc_result_t
named_checknames_get(const cfg_obj_t **maps, const char *const names[],
const cfg_obj_t **obj) {
const cfg_listelt_t *element;
const cfg_obj_t *checknames;
const cfg_obj_t *type;
const cfg_obj_t *value;
int i;
REQUIRE(maps != NULL);
REQUIRE(names != NULL);
REQUIRE(obj != NULL && *obj == NULL);
for (i = 0; maps[i] != NULL; i++) {
checknames = NULL;
if (cfg_map_get(maps[i], "check-names", &checknames) ==
ISC_R_SUCCESS) {
/*
* Zone map entry is not a list.
*/
if (checknames != NULL && !cfg_obj_islist(checknames)) {
*obj = checknames;
return (ISC_R_SUCCESS);
}
for (element = cfg_list_first(checknames);
element != NULL; element = cfg_list_next(element))
{
value = cfg_listelt_value(element);
type = cfg_tuple_get(value, "type");
for (size_t j = 0; names[j] != NULL; j++) {
if (strcasecmp(cfg_obj_asstring(type),
names[j]) == 0) {
*obj = cfg_tuple_get(value,
"mode");
return (ISC_R_SUCCESS);
}
}
}
}
}
return (ISC_R_NOTFOUND);
}
int
named_config_listcount(const cfg_obj_t *list) {
const cfg_listelt_t *e;
int i = 0;
for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e)) {
i++;
}
return (i);
}
isc_result_t
named_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
dns_rdataclass_t *classp) {
isc_textregion_t r;
isc_result_t result;
if (!cfg_obj_isstring(classobj)) {
*classp = defclass;
return (ISC_R_SUCCESS);
}
DE_CONST(cfg_obj_asstring(classobj), r.base);
r.length = strlen(r.base);
result = dns_rdataclass_fromtext(classp, &r);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(classobj, named_g_lctx, ISC_LOG_ERROR,
"unknown class '%s'", r.base);
}
return (result);
}
isc_result_t
named_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
dns_rdatatype_t *typep) {
isc_textregion_t r;
isc_result_t result;
if (!cfg_obj_isstring(typeobj)) {
*typep = deftype;
return (ISC_R_SUCCESS);
}
DE_CONST(cfg_obj_asstring(typeobj), r.base);
r.length = strlen(r.base);
result = dns_rdatatype_fromtext(typep, &r);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(typeobj, named_g_lctx, ISC_LOG_ERROR,
"unknown type '%s'", r.base);
}
return (result);
}
dns_zonetype_t
named_config_getzonetype(const cfg_obj_t *zonetypeobj) {
dns_zonetype_t ztype = dns_zone_none;
const char *str;
str = cfg_obj_asstring(zonetypeobj);
if (strcasecmp(str, "primary") == 0 || strcasecmp(str, "master") == 0) {
ztype = dns_zone_primary;
} else if (strcasecmp(str, "secondary") == 0 ||
strcasecmp(str, "slave") == 0) {
ztype = dns_zone_secondary;
} else if (strcasecmp(str, "mirror") == 0) {
ztype = dns_zone_mirror;
} else if (strcasecmp(str, "stub") == 0) {
ztype = dns_zone_stub;
} else if (strcasecmp(str, "static-stub") == 0) {
ztype = dns_zone_staticstub;
} else if (strcasecmp(str, "redirect") == 0) {
ztype = dns_zone_redirect;
} else {
UNREACHABLE();
}
return (ztype);
}
isc_result_t
named_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
in_port_t defport, isc_mem_t *mctx,
isc_sockaddr_t **addrsp, isc_dscp_t **dscpsp,
uint32_t *countp) {
int count, i = 0;
const cfg_obj_t *addrlist;
const cfg_obj_t *portobj, *dscpobj;
const cfg_listelt_t *element;
isc_sockaddr_t *addrs;
in_port_t port;
isc_dscp_t dscp = -1, *dscps = NULL;
isc_result_t result;
INSIST(addrsp != NULL && *addrsp == NULL);
INSIST(dscpsp == NULL || *dscpsp == NULL);
INSIST(countp != NULL);
addrlist = cfg_tuple_get(list, "addresses");
count = named_config_listcount(addrlist);
portobj = cfg_tuple_get(list, "port");
if (cfg_obj_isuint32(portobj)) {
uint32_t val = cfg_obj_asuint32(portobj);
if (val > UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx, ISC_LOG_ERROR,
"port '%u' out of range", val);
return (ISC_R_RANGE);
}
port = (in_port_t)val;
} else if (defport != 0) {
port = defport;
} else {
result = named_config_getport(config, "port", &port);
if (result != ISC_R_SUCCESS) {
return (result);
}
}
if (dscpsp != NULL) {
dscpobj = cfg_tuple_get(list, "dscp");
if (dscpobj != NULL && cfg_obj_isuint32(dscpobj)) {
if (cfg_obj_asuint32(dscpobj) > 63) {
cfg_obj_log(dscpobj, named_g_lctx,
ISC_LOG_ERROR,
"dscp value '%u' is out of range",
cfg_obj_asuint32(dscpobj));
return (ISC_R_RANGE);
}
dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
}
dscps = isc_mem_get(mctx, count * sizeof(isc_dscp_t));
}
addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
for (element = cfg_list_first(addrlist); element != NULL;
element = cfg_list_next(element), i++)
{
const cfg_obj_t *addr;
INSIST(i < count);
addr = cfg_listelt_value(element);
addrs[i] = *cfg_obj_assockaddr(addr);
if (dscpsp != NULL) {
isc_dscp_t innerdscp;
innerdscp = cfg_obj_getdscp(addr);
if (innerdscp == -1) {
innerdscp = dscp;
}
dscps[i] = innerdscp;
}
if (isc_sockaddr_getport(&addrs[i]) == 0) {
isc_sockaddr_setport(&addrs[i], port);
}
}
INSIST(i == count);
*addrsp = addrs;
*countp = count;
if (dscpsp != NULL) {
*dscpsp = dscps;
}
return (ISC_R_SUCCESS);
}
void
named_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
isc_dscp_t **dscpsp, uint32_t count) {
INSIST(addrsp != NULL && *addrsp != NULL);
INSIST(dscpsp == NULL || *dscpsp != NULL);
isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
*addrsp = NULL;
if (dscpsp != NULL) {
isc_mem_put(mctx, *dscpsp, count * sizeof(isc_dscp_t));
*dscpsp = NULL;
}
}
static isc_result_t
getremotesdef(const cfg_obj_t *cctx, const char *list, const char *name,
const cfg_obj_t **ret) {
isc_result_t result;
const cfg_obj_t *obj = NULL;
const cfg_listelt_t *elt;
REQUIRE(cctx != NULL);
REQUIRE(name != NULL);
REQUIRE(ret != NULL && *ret == NULL);
result = cfg_map_get(cctx, list, &obj);
if (result != ISC_R_SUCCESS) {
return (result);
}
elt = cfg_list_first(obj);
while (elt != NULL) {
obj = cfg_listelt_value(elt);
if (strcasecmp(cfg_obj_asstring(cfg_tuple_get(obj, "name")),
name) == 0) {
*ret = obj;
return (ISC_R_SUCCESS);
}
elt = cfg_list_next(elt);
}
return (ISC_R_NOTFOUND);
}
isc_result_t
named_config_getremotesdef(const cfg_obj_t *cctx, const char *list,
const char *name, const cfg_obj_t **ret) {
isc_result_t result;
if (strcmp(list, "parental-agents") == 0) {
return (getremotesdef(cctx, list, name, ret));
} else if (strcmp(list, "primaries") == 0) {
result = getremotesdef(cctx, list, name, ret);
if (result != ISC_R_SUCCESS) {
result = getremotesdef(cctx, "masters", name, ret);
}
return (result);
}
return (ISC_R_NOTFOUND);
}
static isc_result_t
named_config_getname(isc_mem_t *mctx, const cfg_obj_t *obj,
dns_name_t **namep) {
REQUIRE(namep != NULL && *namep == NULL);
const char *objstr;
isc_result_t result;
isc_buffer_t b;
dns_fixedname_t fname;
if (!cfg_obj_isstring(obj)) {
*namep = NULL;
return (ISC_R_SUCCESS);
}
*namep = isc_mem_get(mctx, sizeof(**namep));
dns_name_init(*namep, NULL);
objstr = cfg_obj_asstring(obj);
isc_buffer_constinit(&b, objstr, strlen(objstr));
isc_buffer_add(&b, strlen(objstr));
dns_fixedname_init(&fname);
result = dns_name_fromtext(dns_fixedname_name(&fname), &b, dns_rootname,
0, NULL);
if (result != ISC_R_SUCCESS) {
isc_mem_put(mctx, *namep, sizeof(**namep));
*namep = NULL;
return (result);
}
dns_name_dup(dns_fixedname_name(&fname), mctx, *namep);
return (ISC_R_SUCCESS);
}
#define grow_array(mctx, array, newlen, oldlen) \
if (newlen >= oldlen) { \
size_t newsize = (newlen + 16) * sizeof(array[0]); \
size_t oldsize = oldlen * sizeof(array[0]); \
void *tmp = isc_mem_get(mctx, newsize); \
memset(tmp, 0, newsize); \
if (oldlen != 0) { \
memmove(tmp, array, oldsize); \
isc_mem_put(mctx, array, oldsize); \
} \
array = tmp; \
oldlen = newlen + 16; \
}
#define shrink_array(mctx, array, newlen, oldlen) \
if (newlen < oldlen) { \
void *tmp = NULL; \
size_t newsize = newlen * sizeof(array[0]); \
size_t oldsize = oldlen * sizeof(array[0]); \
if (newlen != 0) { \
tmp = isc_mem_get(mctx, newsize); \
memset(tmp, 0, newsize); \
memmove(tmp, array, newsize); \
} else { \
tmp = NULL; \
} \
isc_mem_put(mctx, array, oldsize); \
array = tmp; \
oldlen = newlen; \
}
isc_result_t
named_config_getipandkeylist(const cfg_obj_t *config, const char *listtype,
const cfg_obj_t *list, isc_mem_t *mctx,
dns_ipkeylist_t *ipkl) {
uint32_t addrcount = 0, dscpcount = 0, keycount = 0, tlscount = 0,
i = 0;
uint32_t listcount = 0, l = 0, j;
uint32_t stackcount = 0, pushed = 0;
isc_result_t result;
const cfg_listelt_t *element;
const cfg_obj_t *addrlist;
const cfg_obj_t *portobj;
const cfg_obj_t *dscpobj;
in_port_t port = (in_port_t)0;
in_port_t def_port;
in_port_t def_tlsport;
isc_dscp_t dscp = -1;
isc_sockaddr_t *addrs = NULL;
isc_dscp_t *dscps = NULL;
dns_name_t **keys = NULL;
dns_name_t **tlss = NULL;
struct {
const char *name;
} *lists = NULL;
struct {
const cfg_listelt_t *element;
in_port_t port;
isc_dscp_t dscp;
} *stack = NULL;
REQUIRE(ipkl != NULL);
REQUIRE(ipkl->count == 0);
REQUIRE(ipkl->addrs == NULL);
REQUIRE(ipkl->keys == NULL);
REQUIRE(ipkl->tlss == NULL);
REQUIRE(ipkl->dscps == NULL);
REQUIRE(ipkl->labels == NULL);
REQUIRE(ipkl->allocated == 0);
/*
* Get system defaults.
*/
result = named_config_getport(config, "port", &def_port);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
result = named_config_getport(config, "tls-port", &def_tlsport);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
result = named_config_getdscp(config, &dscp);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
newlist:
addrlist = cfg_tuple_get(list, "addresses");
portobj = cfg_tuple_get(list, "port");
dscpobj = cfg_tuple_get(list, "dscp");
if (cfg_obj_isuint32(portobj)) {
uint32_t val = cfg_obj_asuint32(portobj);
if (val > UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx, ISC_LOG_ERROR,
"port '%u' out of range", val);
result = ISC_R_RANGE;
goto cleanup;
}
port = (in_port_t)val;
}
if (dscpobj != NULL && cfg_obj_isuint32(dscpobj)) {
if (cfg_obj_asuint32(dscpobj) > 63) {
cfg_obj_log(dscpobj, named_g_lctx, ISC_LOG_ERROR,
"dscp value '%u' is out of range",
cfg_obj_asuint32(dscpobj));
result = ISC_R_RANGE;
goto cleanup;
}
dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
}
result = ISC_R_NOMEMORY;
element = cfg_list_first(addrlist);
resume:
for (; element != NULL; element = cfg_list_next(element)) {
const cfg_obj_t *addr;
const cfg_obj_t *key;
const cfg_obj_t *tls;
addr = cfg_tuple_get(cfg_listelt_value(element),
"remoteselement");
key = cfg_tuple_get(cfg_listelt_value(element), "key");
tls = cfg_tuple_get(cfg_listelt_value(element), "tls");
if (!cfg_obj_issockaddr(addr)) {
const char *listname = cfg_obj_asstring(addr);
isc_result_t tresult;
/* Grow lists? */
grow_array(mctx, lists, l, listcount);
/* Seen? */
for (j = 0; j < l; j++) {
if (strcasecmp(lists[j].name, listname) == 0) {
break;
}
}
if (j < l) {
continue;
}
list = NULL;
tresult = named_config_getremotesdef(config, listtype,
listname, &list);
if (tresult == ISC_R_NOTFOUND) {
cfg_obj_log(addr, named_g_lctx, ISC_LOG_ERROR,
"%s \"%s\" not found", listtype,
listname);
result = tresult;
goto cleanup;
}
if (tresult != ISC_R_SUCCESS) {
goto cleanup;
}
lists[l++].name = listname;
/* Grow stack? */
grow_array(mctx, stack, pushed, stackcount);
/*
* We want to resume processing this list on the
* next element.
*/
stack[pushed].element = cfg_list_next(element);
stack[pushed].port = port;
stack[pushed].dscp = dscp;
pushed++;
goto newlist;
}
grow_array(mctx, addrs, i, addrcount);
grow_array(mctx, dscps, i, dscpcount);
grow_array(mctx, keys, i, keycount);
grow_array(mctx, tlss, i, tlscount);
addrs[i] = *cfg_obj_assockaddr(addr);
dscps[i] = cfg_obj_getdscp(addr);
if (dscps[i] == -1) {
dscps[i] = dscp;
}
result = named_config_getname(mctx, key, &keys[i]);
if (result != ISC_R_SUCCESS) {
i++; /* Increment here so that cleanup on error works.
*/
goto cleanup;
}
result = named_config_getname(mctx, tls, &tlss[i]);
if (result != ISC_R_SUCCESS) {
i++; /* Increment here so that cleanup on error works.
*/
goto cleanup;
}
/* Set the default port or tls-port */
if (port == 0) {
if (tlss[i] != NULL) {
port = def_tlsport;
} else {
port = def_port;
}
}
if (isc_sockaddr_getport(&addrs[i]) == 0) {
isc_sockaddr_setport(&addrs[i], port);
}
i++;
}
if (pushed != 0) {
pushed--;
element = stack[pushed].element;
port = stack[pushed].port;
dscp = stack[pushed].dscp;
goto resume;
}
shrink_array(mctx, addrs, i, addrcount);
shrink_array(mctx, dscps, i, dscpcount);
shrink_array(mctx, keys, i, keycount);
shrink_array(mctx, tlss, i, tlscount);
if (lists != NULL) {
isc_mem_put(mctx, lists, listcount * sizeof(lists[0]));
}
if (stack != NULL) {
isc_mem_put(mctx, stack, stackcount * sizeof(stack[0]));
}
INSIST(dscpcount == addrcount);
INSIST(keycount == addrcount);
INSIST(tlscount == addrcount);
INSIST(keycount == dscpcount);
ipkl->addrs = addrs;
ipkl->dscps = dscps;
ipkl->keys = keys;
ipkl->tlss = tlss;
ipkl->count = addrcount;
ipkl->allocated = addrcount;
return (ISC_R_SUCCESS);
cleanup:
if (addrs != NULL) {
isc_mem_put(mctx, addrs, addrcount * sizeof(addrs[0]));
}
if (dscps != NULL) {
isc_mem_put(mctx, dscps, dscpcount * sizeof(dscps[0]));
}
if (keys != NULL) {
for (j = 0; j < i; j++) {
if (keys[j] == NULL) {
continue;
}
if (dns_name_dynamic(keys[j])) {
dns_name_free(keys[j], mctx);
}
isc_mem_put(mctx, keys[j], sizeof(*keys[j]));
}
isc_mem_put(mctx, keys, keycount * sizeof(keys[0]));
}
if (tlss != NULL) {
for (j = 0; j < i; j++) {
if (tlss[j] == NULL) {
continue;
}
if (dns_name_dynamic(tlss[j])) {
dns_name_free(tlss[j], mctx);
}
isc_mem_put(mctx, tlss[j], sizeof(*tlss[j]));
}
isc_mem_put(mctx, tlss, tlscount * sizeof(tlss[0]));
}
if (lists != NULL) {
isc_mem_put(mctx, lists, listcount * sizeof(lists[0]));
}
if (stack != NULL) {
isc_mem_put(mctx, stack, stackcount * sizeof(stack[0]));
}
return (result);
}
isc_result_t
named_config_getport(const cfg_obj_t *config, const char *type,
in_port_t *portp) {
const cfg_obj_t *maps[3];
const cfg_obj_t *options = NULL;
const cfg_obj_t *portobj = NULL;
isc_result_t result;
int i;
(void)cfg_map_get(config, "options", &options);
i = 0;
if (options != NULL) {
maps[i++] = options;
}
maps[i++] = named_g_defaults;
maps[i] = NULL;
result = named_config_get(maps, type, &portobj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_asuint32(portobj) >= UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx, ISC_LOG_ERROR,
"port '%u' out of range",
cfg_obj_asuint32(portobj));
return (ISC_R_RANGE);
}
*portp = (in_port_t)cfg_obj_asuint32(portobj);
return (ISC_R_SUCCESS);
}
isc_result_t
named_config_getdscp(const cfg_obj_t *config, isc_dscp_t *dscpp) {
const cfg_obj_t *options = NULL;
const cfg_obj_t *dscpobj = NULL;
isc_result_t result;
(void)cfg_map_get(config, "options", &options);
if (options == NULL) {
return (ISC_R_SUCCESS);
}
result = cfg_map_get(options, "dscp", &dscpobj);
if (result != ISC_R_SUCCESS || dscpobj == NULL) {
*dscpp = -1;
return (ISC_R_SUCCESS);
}
if (cfg_obj_asuint32(dscpobj) >= 64) {
cfg_obj_log(dscpobj, named_g_lctx, ISC_LOG_ERROR,
"dscp '%u' out of range",
cfg_obj_asuint32(dscpobj));
return (ISC_R_RANGE);
}
*dscpp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
return (ISC_R_SUCCESS);
}
struct keyalgorithms {
const char *str;
enum {
hmacnone,
hmacmd5,
hmacsha1,
hmacsha224,