/*%
* Configure an apex NS with an out-of-zone NS names for a static-stub zone.
* For example, for the zone named "example.com", something like the following
* RRs will be added to the zone DB:
* example.com. NS ns.example.net.
*/
static isc_result_t
configure_staticstub_servernames(const cfg_obj_t *zconfig, dns_zone_t *zone,
dns_rdatalist_t *rdatalist, const char *zname)
{
const cfg_listelt_t *element;
isc_mem_t *mctx = dns_zone_getmctx(zone);
dns_rdata_t *rdata;
isc_region_t sregion, region;
isc_result_t result = ISC_R_SUCCESS;
for (element = cfg_list_first(zconfig);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *obj;
const char *str;
dns_fixedname_t fixed_name;
dns_name_t *nsname;
isc_buffer_t b;
obj = cfg_listelt_value(element);
str = cfg_obj_asstring(obj);
dns_fixedname_init(&fixed_name);
nsname = dns_fixedname_name(&fixed_name);
isc_buffer_init(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
result = dns_name_fromtext(nsname, &b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
"server-name '%s' is not a valid "
"name", str);
return (result);
}
if (dns_name_issubdomain(nsname, dns_zone_getorigin(zone))) {
cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
"server-name '%s' must not be a "
"subdomain of zone name '%s'",
str, zname);
return (ISC_R_FAILURE);
}
dns_name_toregion(nsname, &sregion);
rdata = isc_mem_get(mctx, sizeof(*rdata) + sregion.length);
if (rdata == NULL)
return (ISC_R_NOMEMORY);
region.length = sregion.length;
region.base = (unsigned char *)(rdata + 1);
memcpy(region.base, sregion.base, region.length);
dns_rdata_init(rdata);
dns_rdata_fromregion(rdata, dns_zone_getclass(zone),
dns_rdatatype_ns, ®ion);
ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
}
return (result);
}
static isc_result_t
convert_named_acl(const cfg_obj_t *nameobj, const cfg_obj_t *cctx,
isc_log_t *lctx, cfg_aclconfctx_t *ctx,
isc_mem_t *mctx, unsigned int nest_level,
dns_acl_t **target)
{
isc_result_t result;
const cfg_obj_t *cacl = NULL;
dns_acl_t *dacl;
dns_acl_t loop;
const char *aclname = cfg_obj_asstring(nameobj);
/* Look for an already-converted version. */
for (dacl = ISC_LIST_HEAD(ctx->named_acl_cache);
dacl != NULL;
dacl = ISC_LIST_NEXT(dacl, nextincache))
{
if (strcasecmp(aclname, dacl->name) == 0) {
if (ISC_MAGIC_VALID(dacl, LOOP_MAGIC)) {
cfg_obj_log(nameobj, lctx, ISC_LOG_ERROR,
"acl loop detected: %s", aclname);
return (ISC_R_FAILURE);
}
dns_acl_attach(dacl, target);
return (ISC_R_SUCCESS);
}
}
/* Not yet converted. Convert now. */
result = get_acl_def(cctx, aclname, &cacl);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(nameobj, lctx, ISC_LOG_WARNING,
"undefined ACL '%s'", aclname);
return (result);
}
/*
* Add a loop detection element.
*/
memset(&loop, 0, sizeof(loop));
ISC_LINK_INIT(&loop, nextincache);
DE_CONST(aclname, loop.name);
loop.magic = LOOP_MAGIC;
ISC_LIST_APPEND(ctx->named_acl_cache, &loop, nextincache);
result = cfg_acl_fromconfig(cacl, cctx, lctx, ctx, mctx,
nest_level, &dacl);
ISC_LIST_UNLINK(ctx->named_acl_cache, &loop, nextincache);
loop.magic = 0;
loop.name = NULL;
if (result != ISC_R_SUCCESS)
return (result);
dacl->name = isc_mem_strdup(dacl->mctx, aclname);
if (dacl->name == NULL)
return (ISC_R_NOMEMORY);
ISC_LIST_APPEND(ctx->named_acl_cache, dacl, nextincache);
dns_acl_attach(dacl, target);
return (ISC_R_SUCCESS);
}
isc_result_t
ns_config_getport(const cfg_obj_t *config, 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++] = ns_g_defaults;
maps[i] = NULL;
result = ns_config_get(maps, "port", &portobj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
cfg_obj_log(portobj, ns_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);
}
static void
update_listener(ns_server_t *server, ns_statschannel_t **listenerp,
const cfg_obj_t *listen_params, const cfg_obj_t *config,
isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx,
const char *socktext)
{
ns_statschannel_t *listener;
const cfg_obj_t *allow = NULL;
dns_acl_t *new_acl = NULL;
isc_result_t result = ISC_R_SUCCESS;
for (listener = ISC_LIST_HEAD(server->statschannels);
listener != NULL;
listener = ISC_LIST_NEXT(listener, link))
if (isc_sockaddr_equal(addr, &listener->address))
break;
if (listener == NULL) {
*listenerp = NULL;
return;
}
/*
* Now, keep the old access list unless a new one can be made.
*/
allow = cfg_tuple_get(listen_params, "allow");
if (allow != NULL && cfg_obj_islist(allow)) {
result = cfg_acl_fromconfig(allow, config, ns_g_lctx,
aclconfctx, listener->mctx, 0,
&new_acl);
} else
result = dns_acl_any(listener->mctx, &new_acl);
if (result == ISC_R_SUCCESS) {
LOCK(&listener->lock);
dns_acl_detach(&listener->acl);
dns_acl_attach(new_acl, &listener->acl);
dns_acl_detach(&new_acl);
UNLOCK(&listener->lock);
} else {
cfg_obj_log(listen_params, ns_g_lctx, ISC_LOG_WARNING,
"couldn't install new acl for "
"statistics channel %s: %s",
socktext, isc_result_totext(result));
}
*listenerp = listener;
}
/*%
* Set up a logging category according to the named.conf data
* in 'ccat' and add it to 'logconfig'.
*/
static isc_result_t
category_fromconf(const cfg_obj_t *ccat, isc_logconfig_t *logconfig) {
isc_result_t result;
const char *catname;
isc_logcategory_t *category;
isc_logmodule_t *module;
const cfg_obj_t *destinations = NULL;
const cfg_listelt_t *element = NULL;
catname = cfg_obj_asstring(cfg_tuple_get(ccat, "name"));
category = isc_log_categorybyname(ns_g_lctx, catname);
if (category == NULL) {
cfg_obj_log(ccat, ns_g_lctx, ISC_LOG_ERROR,
"unknown logging category '%s' ignored",
catname);
/*
* Allow further processing by returning success.
*/
return (ISC_R_SUCCESS);
}
if (logconfig == NULL)
return (ISC_R_SUCCESS);
module = NULL;
destinations = cfg_tuple_get(ccat, "destinations");
for (element = cfg_list_first(destinations);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *channel = cfg_listelt_value(element);
const char *channelname = cfg_obj_asstring(channel);
result = isc_log_usechannel(logconfig, channelname, category,
module);
if (result != ISC_R_SUCCESS) {
isc_log_write(ns_g_lctx, CFG_LOGCATEGORY_CONFIG,
NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
"logging channel '%s': %s", channelname,
isc_result_totext(result));
return (result);
}
}
return (ISC_R_SUCCESS);
}
isc_result_t
ns_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, ns_g_lctx, ISC_LOG_ERROR,
"unknown type '%s'", r.base);
return (result);
}
isc_result_t
ns_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, ns_g_lctx, ISC_LOG_ERROR,
"unknown class '%s'", r.base);
return (result);
}
static isc_result_t
convert_keyname(cfg_obj_t *keyobj, isc_mem_t *mctx, dns_name_t *dnsname) {
isc_result_t result;
isc_buffer_t buf;
dns_fixedname_t fixname;
unsigned int keylen;
const char *txtname = cfg_obj_asstring(keyobj);
keylen = strlen(txtname);
isc_buffer_init(&buf, txtname, keylen);
isc_buffer_add(&buf, keylen);
dns_fixedname_init(&fixname);
result = dns_name_fromtext(dns_fixedname_name(&fixname), &buf,
dns_rootname, ISC_FALSE, NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(keyobj, dns_lctx, ISC_LOG_WARNING,
"key name '%s' is not a valid domain name",
txtname);
return (result);
}
return (dns_name_dup(dns_fixedname_name(&fixname), mctx, dnsname));
}
isc_result_t
ns_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, ns_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);
}
/*% directory callback */
static isc_result_t
directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) {
isc_result_t result;
const char *directory;
REQUIRE(strcasecmp("directory", clausename) == 0);
UNUSED(arg);
UNUSED(clausename);
/*
* Change directory.
*/
directory = cfg_obj_asstring(obj);
result = isc_dir_chdir(directory);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(obj, logc, ISC_LOG_ERROR,
"change directory to '%s' failed: %s\n",
directory, isc_result_totext(result));
return (result);
}
return (ISC_R_SUCCESS);
}
/*%
* Set up a logging channel according to the named.conf data
* in 'cchan' and add it to 'logconfig'.
*/
static isc_result_t
channel_fromconf(const cfg_obj_t *channel, isc_logconfig_t *logconfig)
{
isc_result_t result;
isc_logdestination_t dest;
unsigned int type;
unsigned int flags = 0;
int level;
const char *channelname;
const cfg_obj_t *fileobj = NULL;
const cfg_obj_t *syslogobj = NULL;
const cfg_obj_t *nullobj = NULL;
const cfg_obj_t *stderrobj = NULL;
const cfg_obj_t *severity = NULL;
int i;
channelname = cfg_obj_asstring(cfg_map_getname(channel));
(void)cfg_map_get(channel, "file", &fileobj);
(void)cfg_map_get(channel, "syslog", &syslogobj);
(void)cfg_map_get(channel, "null", &nullobj);
(void)cfg_map_get(channel, "stderr", &stderrobj);
i = 0;
if (fileobj != NULL)
i++;
if (syslogobj != NULL)
i++;
if (nullobj != NULL)
i++;
if (stderrobj != NULL)
i++;
if (i != 1) {
cfg_obj_log(channel, ns_g_lctx, ISC_LOG_ERROR,
"channel '%s': exactly one of file, syslog, "
"null, and stderr must be present", channelname);
return (ISC_R_FAILURE);
}
type = ISC_LOG_TONULL;
if (fileobj != NULL) {
const cfg_obj_t *pathobj = cfg_tuple_get(fileobj, "file");
const cfg_obj_t *sizeobj = cfg_tuple_get(fileobj, "size");
const cfg_obj_t *versionsobj =
cfg_tuple_get(fileobj, "versions");
isc_int32_t versions = ISC_LOG_ROLLNEVER;
isc_offset_t size = 0;
type = ISC_LOG_TOFILE;
if (versionsobj != NULL && cfg_obj_isuint32(versionsobj))
versions = cfg_obj_asuint32(versionsobj);
if (versionsobj != NULL && cfg_obj_isstring(versionsobj) &&
strcasecmp(cfg_obj_asstring(versionsobj), "unlimited") == 0)
versions = ISC_LOG_ROLLINFINITE;
if (sizeobj != NULL &&
cfg_obj_isuint64(sizeobj) &&
cfg_obj_asuint64(sizeobj) < ISC_OFFSET_MAXIMUM)
size = (isc_offset_t)cfg_obj_asuint64(sizeobj);
dest.file.stream = NULL;
dest.file.name = cfg_obj_asstring(pathobj);
dest.file.versions = versions;
dest.file.maximum_size = size;
} else if (syslogobj != NULL) {
int facility = LOG_DAEMON;
type = ISC_LOG_TOSYSLOG;
if (cfg_obj_isstring(syslogobj)) {
const char *facilitystr = cfg_obj_asstring(syslogobj);
(void)isc_syslog_facilityfromstring(facilitystr,
&facility);
}
dest.facility = facility;
} else if (stderrobj != NULL) {
type = ISC_LOG_TOFILEDESC;
dest.file.stream = stderr;
dest.file.name = NULL;
dest.file.versions = ISC_LOG_ROLLNEVER;
dest.file.maximum_size = 0;
}
/*
* Munge flags.
*/
{
const cfg_obj_t *printcat = NULL;
const cfg_obj_t *printsev = NULL;
const cfg_obj_t *printtime = NULL;
const cfg_obj_t *buffered = NULL;
(void)cfg_map_get(channel, "print-category", &printcat);
(void)cfg_map_get(channel, "print-severity", &printsev);
(void)cfg_map_get(channel, "print-time", &printtime);
(void)cfg_map_get(channel, "buffered", &buffered);
if (printcat != NULL && cfg_obj_asboolean(printcat))
flags |= ISC_LOG_PRINTCATEGORY;
if (printtime != NULL && cfg_obj_asboolean(printtime))
flags |= ISC_LOG_PRINTTIME;
if (printsev != NULL && cfg_obj_asboolean(printsev))
flags |= ISC_LOG_PRINTLEVEL;
if (buffered != NULL && cfg_obj_asboolean(buffered))
flags |= ISC_LOG_BUFFERED;
}
level = ISC_LOG_INFO;
if (cfg_map_get(channel, "severity", &severity) == ISC_R_SUCCESS) {
if (cfg_obj_isstring(severity)) {
const char *str = cfg_obj_asstring(severity);
if (strcasecmp(str, "critical") == 0)
level = ISC_LOG_CRITICAL;
else if (strcasecmp(str, "error") == 0)
level = ISC_LOG_ERROR;
else if (strcasecmp(str, "warning") == 0)
level = ISC_LOG_WARNING;
else if (strcasecmp(str, "notice") == 0)
level = ISC_LOG_NOTICE;
else if (strcasecmp(str, "info") == 0)
level = ISC_LOG_INFO;
else if (strcasecmp(str, "dynamic") == 0)
level = ISC_LOG_DYNAMIC;
} else
/* debug */
level = cfg_obj_asuint32(severity);
}
if (logconfig == NULL)
result = ISC_R_SUCCESS;
else
result = isc_log_createchannel(logconfig, channelname,
type, level, &dest, flags);
if (result == ISC_R_SUCCESS && type == ISC_LOG_TOFILE) {
FILE *fp;
/*
* Test to make sure that file is a plain file.
* Fix defect #22771
*/
result = isc_file_isplainfile(dest.file.name);
if (result == ISC_R_SUCCESS || result == ISC_R_FILENOTFOUND) {
/*
* Test that the file can be opened, since
* isc_log_open() can't effectively report
* failures when called in isc_log_doit().
*/
result = isc_stdio_open(dest.file.name, "a", &fp);
if (result != ISC_R_SUCCESS) {
if (logconfig != NULL && !ns_g_nosyslog)
syslog(LOG_ERR,
"isc_stdio_open '%s' failed: "
"%s", dest.file.name,
isc_result_totext(result));
fprintf(stderr,
"isc_stdio_open '%s' failed: %s\n",
dest.file.name,
isc_result_totext(result));
} else
(void)isc_stdio_close(fp);
goto done;
}
if (logconfig != NULL && !ns_g_nosyslog)
syslog(LOG_ERR, "isc_file_isplainfile '%s' failed: %s",
dest.file.name, isc_result_totext(result));
fprintf(stderr, "isc_file_isplainfile '%s' failed: %s\n",
dest.file.name, isc_result_totext(result));
}
done:
return (result);
}
static dns_geoip_subtype_t
get_subtype(const cfg_obj_t *obj, isc_log_t *lctx,
dns_geoip_subtype_t subtype, const char *dbname)
{
if (dbname == NULL)
return (subtype);
switch (subtype) {
case dns_geoip_countrycode:
if (strcasecmp(dbname, "city") == 0)
return (dns_geoip_city_countrycode);
else if (strcasecmp(dbname, "region") == 0)
return (dns_geoip_region_countrycode);
else if (strcasecmp(dbname, "country") == 0)
return (dns_geoip_country_code);
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"invalid GeoIP DB specified for "
"country search: ignored");
return (subtype);
case dns_geoip_countrycode3:
if (strcasecmp(dbname, "city") == 0)
return (dns_geoip_city_countrycode3);
else if (strcasecmp(dbname, "country") == 0)
return (dns_geoip_country_code3);
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"invalid GeoIP DB specified for "
"country search: ignored");
return (subtype);
case dns_geoip_countryname:
if (strcasecmp(dbname, "city") == 0)
return (dns_geoip_city_countryname);
else if (strcasecmp(dbname, "country") == 0)
return (dns_geoip_country_name);
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"invalid GeoIP DB specified for "
"country search: ignored");
return (subtype);
case dns_geoip_region:
if (strcasecmp(dbname, "city") == 0)
return (dns_geoip_city_region);
else if (strcasecmp(dbname, "region") == 0)
return (dns_geoip_region_code);
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"invalid GeoIP DB specified for "
"region search: ignored");
return (subtype);
case dns_geoip_regionname:
if (strcasecmp(dbname, "city") == 0)
return (dns_geoip_city_region);
else if (strcasecmp(dbname, "region") == 0)
return (dns_geoip_region_name);
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"invalid GeoIP DB specified for "
"region search: ignored");
return (subtype);
/*
* Log a warning if the wrong database was specified
* on an unambiguous query
*/
case dns_geoip_city_name:
case dns_geoip_city_postalcode:
case dns_geoip_city_metrocode:
case dns_geoip_city_areacode:
case dns_geoip_city_continentcode:
case dns_geoip_city_timezonecode:
if (strcasecmp(dbname, "city") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"a 'city'-only search type: ignoring");
return (subtype);
case dns_geoip_isp_name:
if (strcasecmp(dbname, "isp") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"an 'isp' search: ignoring");
return (subtype);
case dns_geoip_org_name:
if (strcasecmp(dbname, "org") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"an 'org' search: ignoring");
return (subtype);
case dns_geoip_as_asnum:
if (strcasecmp(dbname, "asnum") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"an 'asnum' search: ignoring");
return (subtype);
case dns_geoip_domain_name:
if (strcasecmp(dbname, "domain") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"a 'domain' search: ignoring");
return (subtype);
case dns_geoip_netspeed_id:
if (strcasecmp(dbname, "netspeed") != 0)
cfg_obj_log(obj, lctx, ISC_LOG_WARNING,
"invalid GeoIP DB specified for "
"a 'netspeed' search: ignoring");
return (subtype);
default:
INSIST(0);
}
}
isc_result_t
ns_zone_configure(const cfg_obj_t *config, const cfg_obj_t *vconfig,
const cfg_obj_t *zconfig, cfg_aclconfctx_t *ac,
dns_zone_t *zone)
{
isc_result_t result;
const char *zname;
dns_rdataclass_t zclass;
dns_rdataclass_t vclass;
const cfg_obj_t *maps[5];
const cfg_obj_t *zoptions = NULL;
const cfg_obj_t *options = NULL;
const cfg_obj_t *obj;
const char *filename = NULL;
dns_notifytype_t notifytype = dns_notifytype_yes;
isc_sockaddr_t *addrs;
dns_name_t **keynames;
isc_uint32_t count;
char *cpval;
unsigned int dbargc;
char **dbargv;
static char default_dbtype[] = "rbt";
isc_mem_t *mctx = dns_zone_getmctx(zone);
dns_dialuptype_t dialup = dns_dialuptype_no;
dns_zonetype_t ztype;
int i;
isc_int32_t journal_size;
isc_boolean_t multi;
isc_boolean_t alt;
dns_view_t *view;
isc_boolean_t check = ISC_FALSE, fail = ISC_FALSE;
isc_boolean_t warn = ISC_FALSE, ignore = ISC_FALSE;
isc_boolean_t ixfrdiff;
dns_masterformat_t masterformat;
isc_stats_t *zoneqrystats;
isc_boolean_t zonestats_on;
int seconds;
i = 0;
if (zconfig != NULL) {
zoptions = cfg_tuple_get(zconfig, "options");
maps[i++] = zoptions;
}
if (vconfig != NULL)
maps[i++] = cfg_tuple_get(vconfig, "options");
if (config != NULL) {
(void)cfg_map_get(config, "options", &options);
if (options != NULL)
maps[i++] = options;
}
maps[i++] = ns_g_defaults;
maps[i] = NULL;
if (vconfig != NULL)
RETERR(ns_config_getclass(cfg_tuple_get(vconfig, "class"),
dns_rdataclass_in, &vclass));
else
vclass = dns_rdataclass_in;
/*
* Configure values common to all zone types.
*/
zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
RETERR(ns_config_getclass(cfg_tuple_get(zconfig, "class"),
vclass, &zclass));
dns_zone_setclass(zone, zclass);
ztype = zonetype_fromconfig(zoptions);
dns_zone_settype(zone, ztype);
obj = NULL;
result = cfg_map_get(zoptions, "database", &obj);
if (result == ISC_R_SUCCESS)
cpval = isc_mem_strdup(mctx, cfg_obj_asstring(obj));
else
cpval = default_dbtype;
if (cpval == NULL)
return(ISC_R_NOMEMORY);
result = strtoargv(mctx, cpval, &dbargc, &dbargv);
if (result != ISC_R_SUCCESS && cpval != default_dbtype) {
isc_mem_free(mctx, cpval);
return (result);
}
/*
* ANSI C is strange here. There is no logical reason why (char **)
* cannot be promoted automatically to (const char * const *) by the
* compiler w/o generating a warning.
*/
result = dns_zone_setdbtype(zone, dbargc, (const char * const *)dbargv);
isc_mem_put(mctx, dbargv, dbargc * sizeof(*dbargv));
if (cpval != default_dbtype)
isc_mem_free(mctx, cpval);
if (result != ISC_R_SUCCESS)
return (result);
obj = NULL;
result = cfg_map_get(zoptions, "file", &obj);
if (result == ISC_R_SUCCESS)
filename = cfg_obj_asstring(obj);
/*
* Unless we're using some alternative database, a master zone
* will be needing a master file.
*/
if (ztype == dns_zone_master && cpval == default_dbtype &&
filename == NULL) {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
"zone '%s': 'file' not specified",
zname);
return (ISC_R_FAILURE);
}
masterformat = dns_masterformat_text;
obj = NULL;
result= ns_config_get(maps, "masterfile-format", &obj);
if (result == ISC_R_SUCCESS) {
const char *masterformatstr = cfg_obj_asstring(obj);
if (strcasecmp(masterformatstr, "text") == 0)
masterformat = dns_masterformat_text;
else if (strcasecmp(masterformatstr, "raw") == 0)
masterformat = dns_masterformat_raw;
else
INSIST(0);
}
RETERR(dns_zone_setfile2(zone, filename, masterformat));
obj = NULL;
result = cfg_map_get(zoptions, "journal", &obj);
if (result == ISC_R_SUCCESS)
RETERR(dns_zone_setjournal(zone, cfg_obj_asstring(obj)));
if (ztype == dns_zone_slave)
RETERR(configure_zone_acl(zconfig, vconfig, config,
allow_notify, ac, zone,
dns_zone_setnotifyacl,
dns_zone_clearnotifyacl));
/*
* XXXAG This probably does not make sense for stubs.
*/
RETERR(configure_zone_acl(zconfig, vconfig, config,
allow_query, ac, zone,
dns_zone_setqueryacl,
dns_zone_clearqueryacl));
obj = NULL;
result = ns_config_get(maps, "dialup", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (cfg_obj_isboolean(obj)) {
if (cfg_obj_asboolean(obj))
dialup = dns_dialuptype_yes;
else
dialup = dns_dialuptype_no;
} else {
const char *dialupstr = cfg_obj_asstring(obj);
if (strcasecmp(dialupstr, "notify") == 0)
dialup = dns_dialuptype_notify;
else if (strcasecmp(dialupstr, "notify-passive") == 0)
dialup = dns_dialuptype_notifypassive;
else if (strcasecmp(dialupstr, "refresh") == 0)
dialup = dns_dialuptype_refresh;
else if (strcasecmp(dialupstr, "passive") == 0)
dialup = dns_dialuptype_passive;
else
INSIST(0);
}
dns_zone_setdialup(zone, dialup);
obj = NULL;
result = ns_config_get(maps, "zone-statistics", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
zonestats_on = cfg_obj_asboolean(obj);
zoneqrystats = NULL;
if (zonestats_on) {
RETERR(isc_stats_create(mctx, &zoneqrystats,
dns_nsstatscounter_max));
}
dns_zone_setrequeststats(zone, zoneqrystats);
if (zoneqrystats != NULL)
isc_stats_detach(&zoneqrystats);
/*
* Configure master functionality. This applies
* to primary masters (type "master") and slaves
* acting as masters (type "slave"), but not to stubs.
*/
if (ztype != dns_zone_stub && ztype != dns_zone_staticstub) {
obj = NULL;
result = ns_config_get(maps, "notify", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (cfg_obj_isboolean(obj)) {
if (cfg_obj_asboolean(obj))
notifytype = dns_notifytype_yes;
else
notifytype = dns_notifytype_no;
} else {
const char *notifystr = cfg_obj_asstring(obj);
if (strcasecmp(notifystr, "explicit") == 0)
notifytype = dns_notifytype_explicit;
else if (strcasecmp(notifystr, "master-only") == 0)
notifytype = dns_notifytype_masteronly;
else
INSIST(0);
}
dns_zone_setnotifytype(zone, notifytype);
obj = NULL;
result = ns_config_get(maps, "also-notify", &obj);
if (result == ISC_R_SUCCESS) {
isc_sockaddr_t *addrs = NULL;
isc_uint32_t addrcount;
result = ns_config_getiplist(config, obj, 0, mctx,
&addrs, &addrcount);
if (result != ISC_R_SUCCESS)
return (result);
result = dns_zone_setalsonotify(zone, addrs,
addrcount);
ns_config_putiplist(mctx, &addrs, addrcount);
if (result != ISC_R_SUCCESS)
return (result);
} else
RETERR(dns_zone_setalsonotify(zone, NULL, 0));
obj = NULL;
result = ns_config_get(maps, "notify-source", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setnotifysrc4(zone, cfg_obj_assockaddr(obj)));
ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
obj = NULL;
result = ns_config_get(maps, "notify-source-v6", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setnotifysrc6(zone, cfg_obj_assockaddr(obj)));
ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
obj = NULL;
result = ns_config_get(maps, "notify-to-soa", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_NOTIFYTOSOA,
cfg_obj_asboolean(obj));
dns_zone_setisself(zone, ns_client_isself, NULL);
RETERR(configure_zone_acl(zconfig, vconfig, config,
allow_transfer, ac, zone,
dns_zone_setxfracl,
dns_zone_clearxfracl));
obj = NULL;
result = ns_config_get(maps, "max-transfer-time-out", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setmaxxfrout(zone, cfg_obj_asuint32(obj) * 60);
obj = NULL;
result = ns_config_get(maps, "max-transfer-idle-out", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setidleout(zone, cfg_obj_asuint32(obj) * 60);
obj = NULL;
result = ns_config_get(maps, "max-journal-size", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setjournalsize(zone, -1);
if (cfg_obj_isstring(obj)) {
const char *str = cfg_obj_asstring(obj);
INSIST(strcasecmp(str, "unlimited") == 0);
journal_size = ISC_UINT32_MAX / 2;
} else {
isc_resourcevalue_t value;
value = cfg_obj_asuint64(obj);
if (value > ISC_UINT32_MAX / 2) {
cfg_obj_log(obj, ns_g_lctx,
ISC_LOG_ERROR,
"'max-journal-size "
"%" ISC_PRINT_QUADFORMAT "d' "
"is too large",
value);
RETERR(ISC_R_RANGE);
}
journal_size = (isc_uint32_t)value;
}
dns_zone_setjournalsize(zone, journal_size);
obj = NULL;
result = ns_config_get(maps, "ixfr-from-differences", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (cfg_obj_isboolean(obj))
ixfrdiff = cfg_obj_asboolean(obj);
else if (!strcasecmp(cfg_obj_asstring(obj), "master") &&
ztype == dns_zone_master)
ixfrdiff = ISC_TRUE;
else if (!strcasecmp(cfg_obj_asstring(obj), "slave") &&
ztype == dns_zone_slave)
ixfrdiff = ISC_TRUE;
else
ixfrdiff = ISC_FALSE;
dns_zone_setoption(zone, DNS_ZONEOPT_IXFRFROMDIFFS, ixfrdiff);
checknames(ztype, maps, &obj);
INSIST(obj != NULL);
if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) {
fail = ISC_FALSE;
check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) {
fail = check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) {
fail = check = ISC_FALSE;
} else
INSIST(0);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKNAMES, check);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKNAMESFAIL, fail);
obj = NULL;
result = ns_config_get(maps, "notify-delay", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setnotifydelay(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "check-sibling", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKSIBLING,
cfg_obj_asboolean(obj));
obj = NULL;
result = ns_config_get(maps, "zero-no-soa-ttl", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setzeronosoattl(zone, cfg_obj_asboolean(obj));
obj = NULL;
result = ns_config_get(maps, "nsec3-test-zone", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_NSEC3TESTZONE,
cfg_obj_asboolean(obj));
}
/*
* Configure update-related options. These apply to
* primary masters only.
*/
if (ztype == dns_zone_master) {
dns_acl_t *updateacl;
RETERR(configure_zone_acl(zconfig, vconfig, config,
allow_update, ac, zone,
dns_zone_setupdateacl,
dns_zone_clearupdateacl));
updateacl = dns_zone_getupdateacl(zone);
if (updateacl != NULL && dns_acl_isinsecure(updateacl))
isc_log_write(ns_g_lctx, DNS_LOGCATEGORY_SECURITY,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"zone '%s' allows updates by IP "
"address, which is insecure",
zname);
RETERR(configure_zone_ssutable(zoptions, zone, zname));
obj = NULL;
result = ns_config_get(maps, "sig-validity-interval", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
{
const cfg_obj_t *validity, *resign;
validity = cfg_tuple_get(obj, "validity");
seconds = cfg_obj_asuint32(validity) * 86400;
dns_zone_setsigvalidityinterval(zone, seconds);
resign = cfg_tuple_get(obj, "re-sign");
if (cfg_obj_isvoid(resign)) {
seconds /= 4;
} else {
if (seconds > 7 * 86400)
seconds = cfg_obj_asuint32(resign) *
86400;
else
seconds = cfg_obj_asuint32(resign) *
3600;
}
dns_zone_setsigresigninginterval(zone, seconds);
}
obj = NULL;
result = ns_config_get(maps, "key-directory", &obj);
if (result == ISC_R_SUCCESS) {
filename = cfg_obj_asstring(obj);
RETERR(dns_zone_setkeydirectory(zone, filename));
}
obj = NULL;
result = ns_config_get(maps, "sig-signing-signatures", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setsignatures(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "sig-signing-nodes", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setnodes(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "sig-signing-type", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setprivatetype(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "update-check-ksk", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_UPDATECHECKKSK,
cfg_obj_asboolean(obj));
obj = NULL;
result = ns_config_get(maps, "dnssec-dnskey-kskonly", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_DNSKEYKSKONLY,
cfg_obj_asboolean(obj));
} else if (ztype == dns_zone_slave) {
RETERR(configure_zone_acl(zconfig, vconfig, config,
allow_update_forwarding, ac, zone,
dns_zone_setforwardacl,
dns_zone_clearforwardacl));
}
/*%
* Primary master functionality.
*/
if (ztype == dns_zone_master) {
isc_boolean_t allow = ISC_FALSE, maint = ISC_FALSE;
obj = NULL;
result = ns_config_get(maps, "check-wildcard", &obj);
if (result == ISC_R_SUCCESS)
check = cfg_obj_asboolean(obj);
else
check = ISC_FALSE;
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKWILDCARD, check);
obj = NULL;
result = ns_config_get(maps, "check-dup-records", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) {
fail = ISC_FALSE;
check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) {
fail = check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) {
fail = check = ISC_FALSE;
} else
INSIST(0);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKDUPRR, check);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKDUPRRFAIL, fail);
obj = NULL;
result = ns_config_get(maps, "check-mx", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) {
fail = ISC_FALSE;
check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) {
fail = check = ISC_TRUE;
} else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) {
fail = check = ISC_FALSE;
} else
INSIST(0);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKMX, check);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKMXFAIL, fail);
obj = NULL;
result = ns_config_get(maps, "check-integrity", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_CHECKINTEGRITY,
cfg_obj_asboolean(obj));
obj = NULL;
result = ns_config_get(maps, "check-mx-cname", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) {
warn = ISC_TRUE;
ignore = ISC_FALSE;
} else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) {
warn = ignore = ISC_FALSE;
} else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) {
warn = ignore = ISC_TRUE;
} else
INSIST(0);
dns_zone_setoption(zone, DNS_ZONEOPT_WARNMXCNAME, warn);
dns_zone_setoption(zone, DNS_ZONEOPT_IGNOREMXCNAME, ignore);
obj = NULL;
result = ns_config_get(maps, "check-srv-cname", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) {
warn = ISC_TRUE;
ignore = ISC_FALSE;
} else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) {
warn = ignore = ISC_FALSE;
} else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) {
warn = ignore = ISC_TRUE;
} else
INSIST(0);
dns_zone_setoption(zone, DNS_ZONEOPT_WARNSRVCNAME, warn);
dns_zone_setoption(zone, DNS_ZONEOPT_IGNORESRVCNAME, ignore);
obj = NULL;
result = ns_config_get(maps, "dnssec-secure-to-insecure", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setoption(zone, DNS_ZONEOPT_SECURETOINSECURE,
cfg_obj_asboolean(obj));
obj = NULL;
result = cfg_map_get(zoptions, "auto-dnssec", &obj);
if (result == ISC_R_SUCCESS) {
const char *arg = cfg_obj_asstring(obj);
if (strcasecmp(arg, "allow") == 0)
allow = ISC_TRUE;
else if (strcasecmp(arg, "maintain") == 0)
allow = maint = ISC_TRUE;
else if (strcasecmp(arg, "off") == 0)
;
else
INSIST(0);
dns_zone_setkeyopt(zone, DNS_ZONEKEY_ALLOW, allow);
dns_zone_setkeyopt(zone, DNS_ZONEKEY_MAINTAIN, maint);
}
}
/*
* Configure slave functionality.
*/
switch (ztype) {
case dns_zone_slave:
case dns_zone_stub:
count = 0;
obj = NULL;
(void)cfg_map_get(zoptions, "masters", &obj);
if (obj != NULL) {
addrs = NULL;
keynames = NULL;
RETERR(ns_config_getipandkeylist(config, obj, mctx,
&addrs, &keynames,
&count));
result = dns_zone_setmasterswithkeys(zone, addrs,
keynames, count);
ns_config_putipandkeylist(mctx, &addrs, &keynames,
count);
} else
result = dns_zone_setmasters(zone, NULL, 0);
RETERR(result);
multi = ISC_FALSE;
if (count > 1) {
obj = NULL;
result = ns_config_get(maps, "multi-master", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
multi = cfg_obj_asboolean(obj);
}
dns_zone_setoption(zone, DNS_ZONEOPT_MULTIMASTER, multi);
obj = NULL;
result = ns_config_get(maps, "max-transfer-time-in", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setmaxxfrin(zone, cfg_obj_asuint32(obj) * 60);
obj = NULL;
result = ns_config_get(maps, "max-transfer-idle-in", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setidlein(zone, cfg_obj_asuint32(obj) * 60);
obj = NULL;
result = ns_config_get(maps, "max-refresh-time", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setmaxrefreshtime(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "min-refresh-time", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setminrefreshtime(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "max-retry-time", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setmaxretrytime(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "min-retry-time", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
dns_zone_setminretrytime(zone, cfg_obj_asuint32(obj));
obj = NULL;
result = ns_config_get(maps, "transfer-source", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setxfrsource4(zone, cfg_obj_assockaddr(obj)));
ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
obj = NULL;
result = ns_config_get(maps, "transfer-source-v6", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setxfrsource6(zone, cfg_obj_assockaddr(obj)));
ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
obj = NULL;
result = ns_config_get(maps, "alt-transfer-source", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setaltxfrsource4(zone, cfg_obj_assockaddr(obj)));
obj = NULL;
result = ns_config_get(maps, "alt-transfer-source-v6", &obj);
INSIST(result == ISC_R_SUCCESS && obj != NULL);
RETERR(dns_zone_setaltxfrsource6(zone, cfg_obj_assockaddr(obj)));
obj = NULL;
(void)ns_config_get(maps, "use-alt-transfer-source", &obj);
if (obj == NULL) {
/*
* Default off when views are in use otherwise
* on for BIND 8 compatibility.
*/
view = dns_zone_getview(zone);
if (view != NULL && strcmp(view->name, "_default") == 0)
alt = ISC_TRUE;
else
alt = ISC_FALSE;
} else
alt = cfg_obj_asboolean(obj);
dns_zone_setoption(zone, DNS_ZONEOPT_USEALTXFRSRC, alt);
obj = NULL;
(void)ns_config_get(maps, "try-tcp-refresh", &obj);
dns_zone_setoption(zone, DNS_ZONEOPT_TRYTCPREFRESH,
cfg_obj_asboolean(obj));
break;
case dns_zone_staticstub:
RETERR(configure_staticstub(zoptions, zone, zname,
default_dbtype));
break;
default:
break;
}
return (ISC_R_SUCCESS);
}
/*%
* Configure an apex NS with glues for a static-stub zone.
* For example, for the zone named "example.com", the following RRs will be
* added to the zone DB:
* example.com. NS example.com.
* example.com. A 192.0.2.1
* example.com. AAAA 2001:db8::1
*/
static isc_result_t
configure_staticstub_serveraddrs(const cfg_obj_t *zconfig, dns_zone_t *zone,
dns_rdatalist_t *rdatalist_ns,
dns_rdatalist_t *rdatalist_a,
dns_rdatalist_t *rdatalist_aaaa)
{
const cfg_listelt_t *element;
isc_mem_t *mctx = dns_zone_getmctx(zone);
isc_region_t region, sregion;
dns_rdata_t *rdata;
isc_result_t result = ISC_R_SUCCESS;
for (element = cfg_list_first(zconfig);
element != NULL;
element = cfg_list_next(element))
{
const isc_sockaddr_t* sa;
isc_netaddr_t na;
const cfg_obj_t *address = cfg_listelt_value(element);
dns_rdatalist_t *rdatalist;
sa = cfg_obj_assockaddr(address);
if (isc_sockaddr_getport(sa) != 0) {
cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
"port is not configurable for "
"static stub server-addresses");
return (ISC_R_FAILURE);
}
isc_netaddr_fromsockaddr(&na, sa);
if (isc_netaddr_getzone(&na) != 0) {
cfg_obj_log(zconfig, ns_g_lctx, ISC_LOG_ERROR,
"scoped address is not allowed "
"for static stub "
"server-addresses");
return (ISC_R_FAILURE);
}
switch (na.family) {
case AF_INET:
region.length = sizeof(na.type.in);
rdatalist = rdatalist_a;
break;
default:
INSIST(na.family == AF_INET6);
region.length = sizeof(na.type.in6);
rdatalist = rdatalist_aaaa;
break;
}
rdata = isc_mem_get(mctx, sizeof(*rdata) + region.length);
if (rdata == NULL)
return (ISC_R_NOMEMORY);
region.base = (unsigned char *)(rdata + 1);
memcpy(region.base, &na.type, region.length);
dns_rdata_init(rdata);
dns_rdata_fromregion(rdata, dns_zone_getclass(zone),
rdatalist->type, ®ion);
ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
}
/*
* If no address is specified (unlikely in this context, but possible),
* there's nothing to do anymore.
*/
if (ISC_LIST_EMPTY(rdatalist_a->rdata) &&
ISC_LIST_EMPTY(rdatalist_aaaa->rdata)) {
return (ISC_R_SUCCESS);
}
/* Add to the list an apex NS with the ns name being the origin name */
dns_name_toregion(dns_zone_getorigin(zone), &sregion);
rdata = isc_mem_get(mctx, sizeof(*rdata) + sregion.length);
if (rdata == NULL) {
/*
* Already allocated data will be freed in the caller, so
* we can simply return here.
*/
return (ISC_R_NOMEMORY);
}
region.length = sregion.length;
region.base = (unsigned char *)(rdata + 1);
memcpy(region.base, sregion.base, region.length);
dns_rdata_init(rdata);
dns_rdata_fromregion(rdata, dns_zone_getclass(zone),
dns_rdatatype_ns, ®ion);
ISC_LIST_APPEND(rdatalist_ns->rdata, rdata, link);
return (result);
}
static isc_result_t
parse_geoip_element(const cfg_obj_t *obj, isc_log_t *lctx,
cfg_aclconfctx_t *ctx, dns_aclelement_t *dep)
{
const cfg_obj_t *ge;
const char *dbname = NULL;
const char *stype, *search;
dns_geoip_subtype_t subtype;
dns_aclelement_t de;
size_t len;
REQUIRE(dep != NULL);
de = *dep;
ge = cfg_tuple_get(obj, "db");
if (!cfg_obj_isvoid(ge))
dbname = cfg_obj_asstring(ge);
stype = cfg_obj_asstring(cfg_tuple_get(obj, "subtype"));
search = cfg_obj_asstring(cfg_tuple_get(obj, "search"));
len = strlen(search);
if (len == 0) {
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"zero-length geoip search field");
return (ISC_R_FAILURE);
}
if (strcasecmp(stype, "country") == 0 && len == 2) {
/* Two-letter country code */
subtype = dns_geoip_countrycode;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "country") == 0 && len == 3) {
/* Three-letter country code */
subtype = dns_geoip_countrycode3;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "country") == 0) {
/* Country name */
subtype = dns_geoip_countryname;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "region") == 0 && len == 2) {
/* Two-letter region code */
subtype = dns_geoip_region;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "region") == 0) {
/* Region name */
subtype = dns_geoip_regionname;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "city") == 0) {
/* City name */
subtype = dns_geoip_city_name;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "postal") == 0 ||
strcasecmp(stype, "postalcode") == 0)
{
if (len < 7) {
subtype = dns_geoip_city_postalcode;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else {
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"geoiop postal code (%s) too long",
search);
return (ISC_R_FAILURE);
}
} else if (strcasecmp(stype, "metro") == 0 ||
strcasecmp(stype, "metrocode") == 0)
{
subtype = dns_geoip_city_metrocode;
de.geoip_elem.as_int = atoi(search);
} else if (strcasecmp(stype, "area") == 0 ||
strcasecmp(stype, "areacode") == 0)
{
subtype = dns_geoip_city_areacode;
de.geoip_elem.as_int = atoi(search);
} else if (strcasecmp(stype, "tz") == 0 ||
strcasecmp(stype, "timezone") == 0)
{
subtype = dns_geoip_city_timezonecode;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "continent") == 0 && len == 2) {
/* Two-letter continent code */
subtype = dns_geoip_city_continentcode;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "continent") == 0) {
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"geoiop continent code (%s) too long", search);
return (ISC_R_FAILURE);
} else if (strcasecmp(stype, "isp") == 0) {
subtype = dns_geoip_isp_name;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "asnum") == 0) {
subtype = dns_geoip_as_asnum;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "org") == 0) {
subtype = dns_geoip_org_name;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "domain") == 0) {
subtype = dns_geoip_domain_name;
strlcpy(de.geoip_elem.as_string, search,
sizeof(de.geoip_elem.as_string));
} else if (strcasecmp(stype, "netspeed") == 0) {
subtype = dns_geoip_netspeed_id;
de.geoip_elem.as_int = atoi(search);
} else
INSIST(0);
de.geoip_elem.subtype = get_subtype(obj, lctx, subtype, dbname);
if (! geoip_can_answer(&de, ctx)) {
cfg_obj_log(obj, lctx, ISC_LOG_ERROR,
"no GeoIP database installed which can answer "
"queries of type '%s'", stype);
return (ISC_R_FAILURE);
}
*dep = de;
return (ISC_R_SUCCESS);
}
static isc_result_t
add_initial_keys(const cfg_obj_t *list, dns_tsig_keyring_t *ring,
isc_mem_t *mctx)
{
dns_tsigkey_t *tsigkey = NULL;
const cfg_listelt_t *element;
const cfg_obj_t *key = NULL;
const char *keyid = NULL;
unsigned char *secret = NULL;
int secretalloc = 0;
int secretlen = 0;
isc_result_t ret;
isc_stdtime_t now;
isc_uint16_t bits;
for (element = cfg_list_first(list);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *algobj = NULL;
const cfg_obj_t *secretobj = NULL;
dns_name_t keyname;
dns_name_t *alg;
const char *algstr;
char keynamedata[1024];
isc_buffer_t keynamesrc, keynamebuf;
const char *secretstr;
isc_buffer_t secretbuf;
key = cfg_listelt_value(element);
keyid = cfg_obj_asstring(cfg_map_getname(key));
algobj = NULL;
secretobj = NULL;
(void)cfg_map_get(key, "algorithm", &algobj);
(void)cfg_map_get(key, "secret", &secretobj);
INSIST(algobj != NULL && secretobj != NULL);
/*
* Create the key name.
*/
dns_name_init(&keyname, NULL);
isc_buffer_init(&keynamesrc, keyid, strlen(keyid));
isc_buffer_add(&keynamesrc, strlen(keyid));
isc_buffer_init(&keynamebuf, keynamedata, sizeof(keynamedata));
ret = dns_name_fromtext(&keyname, &keynamesrc, dns_rootname,
ISC_TRUE, &keynamebuf);
if (ret != ISC_R_SUCCESS)
goto failure;
/*
* Create the algorithm.
*/
algstr = cfg_obj_asstring(algobj);
if (ns_config_getkeyalgorithm(algstr, &alg, &bits)
!= ISC_R_SUCCESS) {
cfg_obj_log(algobj, ns_g_lctx, ISC_LOG_ERROR,
"key '%s': has a unsupported algorithm '%s'",
keyid, algstr);
ret = DNS_R_BADALG;
goto failure;
}
secretstr = cfg_obj_asstring(secretobj);
secretalloc = secretlen = strlen(secretstr) * 3 / 4;
secret = isc_mem_get(mctx, secretlen);
if (secret == NULL) {
ret = ISC_R_NOMEMORY;
goto failure;
}
isc_buffer_init(&secretbuf, secret, secretlen);
ret = isc_base64_decodestring(secretstr, &secretbuf);
if (ret != ISC_R_SUCCESS)
goto failure;
secretlen = isc_buffer_usedlength(&secretbuf);
isc_stdtime_get(&now);
ret = dns_tsigkey_create(&keyname, alg, secret, secretlen,
ISC_FALSE, NULL, now, now,
mctx, ring, &tsigkey);
isc_mem_put(mctx, secret, secretalloc);
secret = NULL;
if (ret != ISC_R_SUCCESS)
goto failure;
/*
* Set digest bits.
*/
dst_key_setbits(tsigkey->key, bits);
dns_tsigkey_detach(&tsigkey);
}
return (ISC_R_SUCCESS);
failure:
cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
"configuring key '%s': %s", keyid,
isc_result_totext(ret));
if (secret != NULL)
isc_mem_put(mctx, secret, secretalloc);
return (ret);
}
isc_result_t
ns_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,
isc_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 = ns_config_listcount(addrlist);
portobj = cfg_tuple_get(list, "port");
if (cfg_obj_isuint32(portobj)) {
isc_uint32_t val = cfg_obj_asuint32(portobj);
if (val > ISC_UINT16_MAX) {
cfg_obj_log(portobj, ns_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 = ns_config_getport(config, &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, ns_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));
if (dscps == NULL)
return (ISC_R_NOMEMORY);
}
addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
if (addrs == NULL) {
if (dscps != NULL)
isc_mem_put(mctx, dscps, count * sizeof(isc_dscp_t));
return (ISC_R_NOMEMORY);
}
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);
}
static isc_result_t
key_fromconfig(const cfg_obj_t *key, dns_client_t *client) {
dns_rdata_dnskey_t keystruct;
isc_uint32_t flags, proto, alg;
const char *keystr, *keynamestr;
unsigned char keydata[4096];
isc_buffer_t keydatabuf;
unsigned char rrdata[4096];
isc_buffer_t rrdatabuf;
isc_region_t r;
dns_fixedname_t fkeyname;
dns_name_t *keyname;
isc_result_t result;
isc_boolean_t match_root = ISC_FALSE, match_dlv = ISC_FALSE;
keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
CHECK(convert_name(&fkeyname, &keyname, keynamestr));
if (!root_validation && !dlv_validation)
return (ISC_R_SUCCESS);
if (anchor_name)
match_root = dns_name_equal(keyname, anchor_name);
if (dlv_name)
match_dlv = dns_name_equal(keyname, dlv_name);
if (!match_root && !match_dlv)
return (ISC_R_SUCCESS);
if ((!root_validation && match_root) || (!dlv_validation && match_dlv))
return (ISC_R_SUCCESS);
if (match_root)
delv_log(ISC_LOG_DEBUG(3), "adding trust anchor %s",
trust_anchor);
if (match_dlv)
delv_log(ISC_LOG_DEBUG(3), "adding DLV trust anchor %s",
dlv_anchor);
flags = cfg_obj_asuint32(cfg_tuple_get(key, "flags"));
proto = cfg_obj_asuint32(cfg_tuple_get(key, "protocol"));
alg = cfg_obj_asuint32(cfg_tuple_get(key, "algorithm"));
keystruct.common.rdclass = dns_rdataclass_in;
keystruct.common.rdtype = dns_rdatatype_dnskey;
/*
* The key data in keystruct is not dynamically allocated.
*/
keystruct.mctx = NULL;
ISC_LINK_INIT(&keystruct.common, link);
if (flags > 0xffff)
CHECK(ISC_R_RANGE);
if (proto > 0xff)
CHECK(ISC_R_RANGE);
if (alg > 0xff)
CHECK(ISC_R_RANGE);
keystruct.flags = (isc_uint16_t)flags;
keystruct.protocol = (isc_uint8_t)proto;
keystruct.algorithm = (isc_uint8_t)alg;
isc_buffer_init(&keydatabuf, keydata, sizeof(keydata));
isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
keystr = cfg_obj_asstring(cfg_tuple_get(key, "key"));
CHECK(isc_base64_decodestring(keystr, &keydatabuf));
isc_buffer_usedregion(&keydatabuf, &r);
keystruct.datalen = r.length;
keystruct.data = r.base;
CHECK(dns_rdata_fromstruct(NULL,
keystruct.common.rdclass,
keystruct.common.rdtype,
&keystruct, &rrdatabuf));
CHECK(dns_client_addtrustedkey(client, dns_rdataclass_in,
keyname, &rrdatabuf));
trusted_keys++;
cleanup:
if (result == DST_R_NOCRYPTO)
cfg_obj_log(key, lctx, ISC_LOG_ERROR, "no crypto support");
else if (result == DST_R_UNSUPPORTEDALG) {
cfg_obj_log(key, lctx, ISC_LOG_WARNING,
"skipping trusted key '%s': %s",
keynamestr, isc_result_totext(result));
result = ISC_R_SUCCESS;
} else if (result != ISC_R_SUCCESS) {
cfg_obj_log(key, lctx, ISC_LOG_ERROR,
"failed to add trusted key '%s': %s",
keynamestr, isc_result_totext(result));
result = ISC_R_FAILURE;
}
return (result);
}
isc_result_t
ns_statschannels_configure(ns_server_t *server, const cfg_obj_t *config,
cfg_aclconfctx_t *aclconfctx)
{
ns_statschannel_t *listener, *listener_next;
ns_statschannellist_t new_listeners;
const cfg_obj_t *statschannellist = NULL;
const cfg_listelt_t *element, *element2;
char socktext[ISC_SOCKADDR_FORMATSIZE];
RUNTIME_CHECK(isc_once_do(&once, init_desc) == ISC_R_SUCCESS);
ISC_LIST_INIT(new_listeners);
/*
* Get the list of named.conf 'statistics-channels' statements.
*/
(void)cfg_map_get(config, "statistics-channels", &statschannellist);
/*
* Run through the new address/port list, noting sockets that are
* already being listened on and moving them to the new list.
*
* Identifying duplicate addr/port combinations is left to either
* the underlying config code, or to the bind attempt getting an
* address-in-use error.
*/
if (statschannellist != NULL) {
#ifndef HAVE_LIBXML2
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"statistics-channels specified but not effective "
"due to missing XML library");
#endif
for (element = cfg_list_first(statschannellist);
element != NULL;
element = cfg_list_next(element)) {
const cfg_obj_t *statschannel;
const cfg_obj_t *listenercfg = NULL;
statschannel = cfg_listelt_value(element);
(void)cfg_map_get(statschannel, "inet",
&listenercfg);
if (listenercfg == NULL)
continue;
for (element2 = cfg_list_first(listenercfg);
element2 != NULL;
element2 = cfg_list_next(element2)) {
const cfg_obj_t *listen_params;
const cfg_obj_t *obj;
isc_sockaddr_t addr;
listen_params = cfg_listelt_value(element2);
obj = cfg_tuple_get(listen_params, "address");
addr = *cfg_obj_assockaddr(obj);
if (isc_sockaddr_getport(&addr) == 0)
isc_sockaddr_setport(&addr, NS_STATSCHANNEL_HTTPPORT);
isc_sockaddr_format(&addr, socktext,
sizeof(socktext));
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER,
ISC_LOG_DEBUG(9),
"processing statistics "
"channel %s",
socktext);
update_listener(server, &listener,
listen_params, config, &addr,
aclconfctx, socktext);
if (listener != NULL) {
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(server->statschannels,
listener, link);
} else {
/*
* This is a new listener.
*/
isc_result_t r;
r = add_listener(server, &listener,
listen_params, config,
&addr, aclconfctx,
socktext);
if (r != ISC_R_SUCCESS) {
cfg_obj_log(listen_params,
ns_g_lctx,
ISC_LOG_WARNING,
"couldn't allocate "
"statistics channel"
" %s: %s",
socktext,
isc_result_totext(r));
}
}
if (listener != NULL)
ISC_LIST_APPEND(new_listeners, listener,
link);
}
}
}
for (listener = ISC_LIST_HEAD(server->statschannels);
listener != NULL;
listener = listener_next) {
listener_next = ISC_LIST_NEXT(listener, link);
ISC_LIST_UNLINK(server->statschannels, listener, link);
shutdown_listener(listener);
}
ISC_LIST_APPENDLIST(server->statschannels, new_listeners, link);
return (ISC_R_SUCCESS);
}
static isc_result_t
get_rndckey(isc_mem_t *mctx, controlkeylist_t *keyids) {
isc_result_t result;
cfg_parser_t *pctx = NULL;
cfg_obj_t *config = NULL;
const cfg_obj_t *key = NULL;
const cfg_obj_t *algobj = NULL;
const cfg_obj_t *secretobj = NULL;
const char *algstr = NULL;
const char *secretstr = NULL;
controlkey_t *keyid = NULL;
char secret[1024];
unsigned int algtype;
isc_buffer_t b;
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_INFO,
"configuring command channel from '%s'",
ns_g_keyfile);
if (! isc_file_exists(ns_g_keyfile))
return (ISC_R_FILENOTFOUND);
CHECK(cfg_parser_create(mctx, ns_g_lctx, &pctx));
CHECK(cfg_parse_file(pctx, ns_g_keyfile, &cfg_type_rndckey, &config));
CHECK(cfg_map_get(config, "key", &key));
keyid = isc_mem_get(mctx, sizeof(*keyid));
if (keyid == NULL)
CHECK(ISC_R_NOMEMORY);
keyid->keyname = isc_mem_strdup(mctx,
cfg_obj_asstring(cfg_map_getname(key)));
keyid->secret.base = NULL;
keyid->secret.length = 0;
keyid->algorithm = DST_ALG_UNKNOWN;
ISC_LINK_INIT(keyid, link);
if (keyid->keyname == NULL)
CHECK(ISC_R_NOMEMORY);
CHECK(bind9_check_key(key, ns_g_lctx));
(void)cfg_map_get(key, "algorithm", &algobj);
(void)cfg_map_get(key, "secret", &secretobj);
INSIST(algobj != NULL && secretobj != NULL);
algstr = cfg_obj_asstring(algobj);
secretstr = cfg_obj_asstring(secretobj);
if (ns_config_getkeyalgorithm2(algstr, NULL,
&algtype, NULL) != ISC_R_SUCCESS) {
cfg_obj_log(key, ns_g_lctx,
ISC_LOG_WARNING,
"unsupported algorithm '%s' in "
"key '%s' for use with command "
"channel",
algstr, keyid->keyname);
goto cleanup;
}
keyid->algorithm = algtype;
isc_buffer_init(&b, secret, sizeof(secret));
result = isc_base64_decodestring(secretstr, &b);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(key, ns_g_lctx, ISC_LOG_WARNING,
"secret for key '%s' on command channel: %s",
keyid->keyname, isc_result_totext(result));
goto cleanup;
}
keyid->secret.length = isc_buffer_usedlength(&b);
keyid->secret.base = isc_mem_get(mctx,
keyid->secret.length);
if (keyid->secret.base == NULL) {
cfg_obj_log(key, ns_g_lctx, ISC_LOG_WARNING,
"couldn't register key '%s': "
"out of memory", keyid->keyname);
CHECK(ISC_R_NOMEMORY);
}
memmove(keyid->secret.base, isc_buffer_base(&b),
keyid->secret.length);
ISC_LIST_APPEND(*keyids, keyid, link);
keyid = NULL;
result = ISC_R_SUCCESS;
cleanup:
if (keyid != NULL)
free_controlkey(keyid, mctx);
if (config != NULL)
cfg_obj_destroy(pctx, &config);
if (pctx != NULL)
cfg_parser_destroy(&pctx);
return (result);
}
isc_result_t
cfg_acl_fromconfig2(const cfg_obj_t *caml, const cfg_obj_t *cctx,
isc_log_t *lctx, cfg_aclconfctx_t *ctx,
isc_mem_t *mctx, unsigned int nest_level,
isc_uint16_t family, dns_acl_t **target)
{
isc_result_t result;
dns_acl_t *dacl = NULL, *inneracl = NULL;
dns_aclelement_t *de;
const cfg_listelt_t *elt;
dns_iptable_t *iptab;
int new_nest_level = 0;
if (nest_level != 0)
new_nest_level = nest_level - 1;
REQUIRE(target != NULL);
REQUIRE(*target == NULL || DNS_ACL_VALID(*target));
if (*target != NULL) {
/*
* If target already points to an ACL, then we're being
* called recursively to configure a nested ACL. The
* nested ACL's contents should just be absorbed into its
* parent ACL.
*/
dns_acl_attach(*target, &dacl);
dns_acl_detach(target);
} else {
/*
* Need to allocate a new ACL structure. Count the items
* in the ACL definition that will require space in the
* elements table. (Note that if nest_level is nonzero,
* *everything* goes in the elements table.)
*/
isc_uint32_t nelem;
if (nest_level == 0) {
result = count_acl_elements(caml, cctx, lctx, ctx,
mctx, &nelem, NULL);
if (result != ISC_R_SUCCESS)
return (result);
} else
nelem = cfg_list_length(caml, ISC_FALSE);
result = dns_acl_create(mctx, nelem, &dacl);
if (result != ISC_R_SUCCESS)
return (result);
}
de = dacl->elements;
for (elt = cfg_list_first(caml);
elt != NULL;
elt = cfg_list_next(elt)) {
const cfg_obj_t *ce = cfg_listelt_value(elt);
isc_boolean_t neg = ISC_FALSE;
INSIST(dacl->length <= dacl->alloc);
if (cfg_obj_istuple(ce)) {
/* Might be a negated element */
const cfg_obj_t *negated =
cfg_tuple_get(ce, "negated");
if (! cfg_obj_isvoid(negated)) {
neg = ISC_TRUE;
dacl->has_negatives = ISC_TRUE;
ce = negated;
}
}
/*
* If nest_level is nonzero, then every element is
* to be stored as a separate, nested ACL rather than
* merged into the main iptable.
*/
iptab = dacl->iptable;
if (nest_level != 0) {
result = dns_acl_create(mctx,
cfg_list_length(ce, ISC_FALSE),
&de->nestedacl);
if (result != ISC_R_SUCCESS)
goto cleanup;
iptab = de->nestedacl->iptable;
}
if (cfg_obj_isnetprefix(ce)) {
/* Network prefix */
isc_netaddr_t addr;
unsigned int bitlen;
cfg_obj_asnetprefix(ce, &addr, &bitlen);
if (family != 0 && family != addr.family) {
char buf[ISC_NETADDR_FORMATSIZE + 1];
isc_netaddr_format(&addr, buf, sizeof(buf));
cfg_obj_log(ce, lctx, ISC_LOG_WARNING,
"'%s': incorrect address family; "
"ignoring", buf);
if (nest_level != 0)
dns_acl_detach(&de->nestedacl);
continue;
}
result = isc_netaddr_prefixok(&addr, bitlen);
if (result != ISC_R_SUCCESS) {
char buf[ISC_NETADDR_FORMATSIZE + 1];
isc_netaddr_format(&addr, buf, sizeof(buf));
cfg_obj_log(ce, lctx, ISC_LOG_WARNING,
"'%s/%u': address/prefix length "
"mismatch", buf, bitlen);
}
/*
* If nesting ACLs (nest_level != 0), we negate
* the nestedacl element, not the iptable entry.
*/
result = dns_iptable_addprefix(iptab, &addr, bitlen,
ISC_TF(nest_level != 0 || !neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (nest_level > 0) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
} else
continue;
} else if (cfg_obj_islist(ce)) {
/*
* If we're nesting ACLs, put the nested
* ACL onto the elements list; otherwise
* merge it into *this* ACL. We nest ACLs
* in two cases: 1) sortlist, 2) if the
* nested ACL contains negated members.
*/
if (inneracl != NULL)
dns_acl_detach(&inneracl);
result = cfg_acl_fromconfig(ce, cctx, lctx,
ctx, mctx, new_nest_level,
&inneracl);
if (result != ISC_R_SUCCESS)
goto cleanup;
nested_acl:
if (nest_level > 0 || inneracl->has_negatives) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
if (de->nestedacl != NULL)
dns_acl_detach(&de->nestedacl);
dns_acl_attach(inneracl,
&de->nestedacl);
dns_acl_detach(&inneracl);
/* Fall through. */
} else {
INSIST(dacl->length + inneracl->length
<= dacl->alloc);
dns_acl_merge(dacl, inneracl,
ISC_TF(!neg));
de += inneracl->length; /* elements added */
dns_acl_detach(&inneracl);
INSIST(dacl->length <= dacl->alloc);
continue;
}
} else if (cfg_obj_istype(ce, &cfg_type_keyref)) {
/* Key name. */
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_keyname;
de->negative = neg;
dns_name_init(&de->keyname, NULL);
result = convert_keyname(ce, lctx, mctx,
&de->keyname);
if (result != ISC_R_SUCCESS)
goto cleanup;
#ifdef HAVE_GEOIP
} else if (cfg_obj_istuple(ce) &&
cfg_obj_isvoid(cfg_tuple_get(ce, "negated")))
{
INSIST(dacl->length < dacl->alloc);
result = parse_geoip_element(ce, lctx, ctx, de);
if (result != ISC_R_SUCCESS)
goto cleanup;
de->type = dns_aclelementtype_geoip;
de->negative = neg;
#endif /* HAVE_GEOIP */
} else if (cfg_obj_isstring(ce)) {
/* ACL name. */
const char *name = cfg_obj_asstring(ce);
if (strcasecmp(name, "any") == 0) {
/* Iptable entry with zero bit length. */
result = dns_iptable_addprefix(iptab, NULL, 0,
ISC_TF(nest_level != 0 || !neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (nest_level != 0) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
} else
continue;
} else if (strcasecmp(name, "none") == 0) {
/* none == !any */
/*
* We don't unconditional set
* dacl->has_negatives and
* de->negative to true so we can handle
* "!none;".
*/
result = dns_iptable_addprefix(iptab, NULL, 0,
ISC_TF(nest_level != 0 || neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (!neg)
dacl->has_negatives = !neg;
if (nest_level != 0) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_nestedacl;
de->negative = !neg;
} else
continue;
} else if (strcasecmp(name, "localhost") == 0) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_localhost;
de->negative = neg;
} else if (strcasecmp(name, "localnets") == 0) {
INSIST(dacl->length < dacl->alloc);
de->type = dns_aclelementtype_localnets;
de->negative = neg;
} else {
if (inneracl != NULL)
dns_acl_detach(&inneracl);
/*
* This call should just find the cached
* of the named acl.
*/
result = convert_named_acl(ce, cctx, lctx, ctx,
mctx, new_nest_level,
&inneracl);
if (result != ISC_R_SUCCESS)
goto cleanup;
goto nested_acl;
}
} else {
cfg_obj_log(ce, lctx, ISC_LOG_WARNING,
"address match list contains "
"unsupported element type");
result = ISC_R_FAILURE;
goto cleanup;
}
/*
* This should only be reached for localhost, localnets
* and keyname elements, and nested ACLs if nest_level is
* nonzero (i.e., in sortlists).
*/
if (de->nestedacl != NULL &&
de->type != dns_aclelementtype_nestedacl)
dns_acl_detach(&de->nestedacl);
dacl->node_count++;
de->node_num = dacl->node_count;
dacl->length++;
de++;
INSIST(dacl->length <= dacl->alloc);
}
dns_acl_attach(dacl, target);
result = ISC_R_SUCCESS;
cleanup:
if (inneracl != NULL)
dns_acl_detach(&inneracl);
dns_acl_detach(&dacl);
return (result);
}
isc_result_t
ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
isc_mem_t *mctx, isc_sockaddr_t **addrsp,
isc_dscp_t **dscpsp, dns_name_t ***keysp,
isc_uint32_t *countp)
{
isc_uint32_t addrcount = 0, dscpcount = 0, keycount = 0, i = 0;
isc_uint32_t listcount = 0, l = 0, j;
isc_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;
isc_dscp_t dscp = -1;
dns_fixedname_t fname;
isc_sockaddr_t *addrs = NULL;
isc_dscp_t *dscps = NULL;
dns_name_t **keys = NULL;
struct { const char *name; } *lists = NULL;
struct {
const cfg_listelt_t *element;
in_port_t port;
isc_dscp_t dscp;
} *stack = NULL;
REQUIRE(addrsp != NULL && *addrsp == NULL);
REQUIRE(dscpsp != NULL && *dscpsp == NULL);
REQUIRE(keysp != NULL && *keysp == NULL);
REQUIRE(countp != NULL);
/*
* Get system defaults.
*/
result = ns_config_getport(config, &port);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = ns_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)) {
isc_uint32_t val = cfg_obj_asuint32(portobj);
if (val > ISC_UINT16_MAX) {
cfg_obj_log(portobj, ns_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, ns_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 char *keystr;
isc_buffer_t b;
addr = cfg_tuple_get(cfg_listelt_value(element),
"masterselement");
key = cfg_tuple_get(cfg_listelt_value(element), "key");
if (!cfg_obj_issockaddr(addr)) {
const char *listname = cfg_obj_asstring(addr);
isc_result_t tresult;
/* Grow lists? */
if (listcount == l) {
void * tmp;
isc_uint32_t newlen = listcount + 16;
size_t newsize, oldsize;
newsize = newlen * sizeof(*lists);
oldsize = listcount * sizeof(*lists);
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
if (listcount != 0) {
memmove(tmp, lists, oldsize);
isc_mem_put(mctx, lists, oldsize);
}
lists = tmp;
listcount = newlen;
}
/* Seen? */
for (j = 0; j < l; j++)
if (strcasecmp(lists[j].name, listname) == 0)
break;
if (j < l)
continue;
tresult = get_masters_def(config, listname, &list);
if (tresult == ISC_R_NOTFOUND) {
cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
"masters \"%s\" not found", listname);
result = tresult;
goto cleanup;
}
if (tresult != ISC_R_SUCCESS)
goto cleanup;
lists[l++].name = listname;
/* Grow stack? */
if (stackcount == pushed) {
void * tmp;
isc_uint32_t newlen = stackcount + 16;
size_t newsize, oldsize;
newsize = newlen * sizeof(*stack);
oldsize = stackcount * sizeof(*stack);
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
if (stackcount != 0) {
memmove(tmp, stack, oldsize);
isc_mem_put(mctx, stack, oldsize);
}
stack = tmp;
stackcount = newlen;
}
/*
* 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;
}
if (i == addrcount) {
void * tmp;
isc_uint32_t newlen = addrcount + 16;
size_t newsize, oldsize;
newsize = newlen * sizeof(isc_sockaddr_t);
oldsize = addrcount * sizeof(isc_sockaddr_t);
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
if (addrcount != 0) {
memmove(tmp, addrs, oldsize);
isc_mem_put(mctx, addrs, oldsize);
}
addrs = tmp;
addrcount = newlen;
newsize = newlen * sizeof(isc_dscp_t);
oldsize = dscpcount * sizeof(isc_dscp_t);
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
if (dscpcount != 0) {
memmove(tmp, dscps, oldsize);
isc_mem_put(mctx, dscps, oldsize);
}
dscps = tmp;
dscpcount = newlen;
newsize = newlen * sizeof(dns_name_t *);
oldsize = keycount * sizeof(dns_name_t *);
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
if (keycount != 0) {
memmove(tmp, keys, oldsize);
isc_mem_put(mctx, keys, oldsize);
}
keys = tmp;
keycount = newlen;
}
addrs[i] = *cfg_obj_assockaddr(addr);
if (isc_sockaddr_getport(&addrs[i]) == 0)
isc_sockaddr_setport(&addrs[i], port);
dscps[i] = cfg_obj_getdscp(addr);
if (dscps[i] == -1)
dscps[i] = dscp;
keys[i] = NULL;
i++; /* Increment here so that cleanup on error works. */
if (!cfg_obj_isstring(key))
continue;
keys[i - 1] = isc_mem_get(mctx, sizeof(dns_name_t));
if (keys[i - 1] == NULL)
goto cleanup;
dns_name_init(keys[i - 1], NULL);
keystr = cfg_obj_asstring(key);
isc_buffer_constinit(&b, keystr, strlen(keystr));
isc_buffer_add(&b, strlen(keystr));
dns_fixedname_init(&fname);
result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = dns_name_dup(dns_fixedname_name(&fname), mctx,
keys[i - 1]);
if (result != ISC_R_SUCCESS)
goto cleanup;
}
if (pushed != 0) {
pushed--;
element = stack[pushed].element;
port = stack[pushed].port;
dscp = stack[pushed].dscp;
goto resume;
}
if (i < addrcount) {
void * tmp;
size_t newsize, oldsize;
newsize = i * sizeof(isc_sockaddr_t);
oldsize = addrcount * sizeof(isc_sockaddr_t);
if (i != 0) {
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
memmove(tmp, addrs, newsize);
} else
tmp = NULL;
isc_mem_put(mctx, addrs, oldsize);
addrs = tmp;
addrcount = i;
newsize = i * sizeof(isc_dscp_t);
oldsize = dscpcount * sizeof(isc_dscp_t);
if (i != 0) {
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
memmove(tmp, dscps, newsize);
} else
tmp = NULL;
isc_mem_put(mctx, dscps, oldsize);
dscps = tmp;
dscpcount = i;
newsize = i * sizeof(dns_name_t *);
oldsize = keycount * sizeof(dns_name_t *);
if (i != 0) {
tmp = isc_mem_get(mctx, newsize);
if (tmp == NULL)
goto cleanup;
memmove(tmp, keys, newsize);
} else
tmp = NULL;
isc_mem_put(mctx, keys, oldsize);
keys = tmp;
keycount = i;
}
if (lists != NULL)
isc_mem_put(mctx, lists, listcount * sizeof(*lists));
if (stack != NULL)
isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
INSIST(keycount == addrcount);
*addrsp = addrs;
*dscpsp = dscps;
*keysp = keys;
*countp = addrcount;
return (ISC_R_SUCCESS);
cleanup:
if (addrs != NULL)
isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
if (dscps != NULL)
isc_mem_put(mctx, dscps, dscpcount * sizeof(isc_dscp_t));
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(dns_name_t));
}
isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
}
if (lists != NULL)
isc_mem_put(mctx, lists, listcount * sizeof(*lists));
if (stack != NULL)
isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
return (result);
}
static void
add_listener(ns_controls_t *cp, controllistener_t **listenerp,
const cfg_obj_t *control, const cfg_obj_t *config,
isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx,
const char *socktext, isc_sockettype_t type)
{
isc_mem_t *mctx = cp->server->mctx;
controllistener_t *listener;
const cfg_obj_t *allow;
const cfg_obj_t *global_keylist = NULL;
const cfg_obj_t *control_keylist = NULL;
dns_acl_t *new_acl = NULL;
isc_result_t result = ISC_R_SUCCESS;
listener = isc_mem_get(mctx, sizeof(*listener));
if (listener == NULL)
result = ISC_R_NOMEMORY;
if (result == ISC_R_SUCCESS) {
listener->mctx = NULL;
isc_mem_attach(mctx, &listener->mctx);
listener->controls = cp;
listener->task = cp->server->task;
listener->address = *addr;
listener->sock = NULL;
listener->listening = ISC_FALSE;
listener->exiting = ISC_FALSE;
listener->acl = NULL;
listener->type = type;
listener->perm = 0;
listener->owner = 0;
listener->group = 0;
ISC_LINK_INIT(listener, link);
ISC_LIST_INIT(listener->keys);
ISC_LIST_INIT(listener->connections);
/*
* Make the acl.
*/
if (control != NULL && type == isc_sockettype_tcp) {
allow = cfg_tuple_get(control, "allow");
result = cfg_acl_fromconfig(allow, config, ns_g_lctx,
aclconfctx, mctx, 0,
&new_acl);
} else {
result = dns_acl_any(mctx, &new_acl);
}
}
if (result == ISC_R_SUCCESS) {
dns_acl_attach(new_acl, &listener->acl);
dns_acl_detach(&new_acl);
if (config != NULL)
get_key_info(config, control, &global_keylist,
&control_keylist);
if (control_keylist != NULL) {
result = controlkeylist_fromcfg(control_keylist,
listener->mctx,
&listener->keys);
if (result == ISC_R_SUCCESS)
register_keys(control, global_keylist,
&listener->keys,
listener->mctx, socktext);
} else
result = get_rndckey(mctx, &listener->keys);
if (result != ISC_R_SUCCESS && control != NULL)
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't install keys for "
"command channel %s: %s",
socktext, isc_result_totext(result));
}
if (result == ISC_R_SUCCESS) {
int pf = isc_sockaddr_pf(&listener->address);
if ((pf == AF_INET && isc_net_probeipv4() != ISC_R_SUCCESS) ||
#ifdef ISC_PLATFORM_HAVESYSUNH
(pf == AF_UNIX && isc_net_probeunix() != ISC_R_SUCCESS) ||
#endif
(pf == AF_INET6 && isc_net_probeipv6() != ISC_R_SUCCESS))
result = ISC_R_FAMILYNOSUPPORT;
}
if (result == ISC_R_SUCCESS && type == isc_sockettype_unix)
isc_socket_cleanunix(&listener->address, ISC_FALSE);
if (result == ISC_R_SUCCESS)
result = isc_socket_create(ns_g_socketmgr,
isc_sockaddr_pf(&listener->address),
type, &listener->sock);
if (result == ISC_R_SUCCESS)
isc_socket_setname(listener->sock, "control", NULL);
#ifndef ISC_ALLOW_MAPPED
if (result == ISC_R_SUCCESS)
isc_socket_ipv6only(listener->sock, ISC_TRUE);
#endif
if (result == ISC_R_SUCCESS)
result = isc_socket_bind(listener->sock, &listener->address,
ISC_SOCKET_REUSEADDRESS);
if (result == ISC_R_SUCCESS && type == isc_sockettype_unix) {
listener->perm = cfg_obj_asuint32(cfg_tuple_get(control,
"perm"));
listener->owner = cfg_obj_asuint32(cfg_tuple_get(control,
"owner"));
listener->group = cfg_obj_asuint32(cfg_tuple_get(control,
"group"));
result = isc_socket_permunix(&listener->address, listener->perm,
listener->owner, listener->group);
}
if (result == ISC_R_SUCCESS)
result = control_listen(listener);
if (result == ISC_R_SUCCESS)
result = control_accept(listener);
if (result == ISC_R_SUCCESS) {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_NOTICE,
"command channel listening on %s", socktext);
*listenerp = listener;
} else {
if (listener != NULL) {
listener->exiting = ISC_TRUE;
free_listener(listener);
}
if (control != NULL)
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't add command channel %s: %s",
socktext, isc_result_totext(result));
else
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_NOTICE,
"couldn't add command channel %s: %s",
socktext, isc_result_totext(result));
*listenerp = NULL;
}
/* XXXDCL return error results? fail hard? */
}
/*%
* Parse the zone update-policy statement.
*/
static isc_result_t
configure_zone_ssutable(const cfg_obj_t *zconfig, dns_zone_t *zone,
const char *zname)
{
const cfg_obj_t *updatepolicy = NULL;
const cfg_listelt_t *element, *element2;
dns_ssutable_t *table = NULL;
isc_mem_t *mctx = dns_zone_getmctx(zone);
isc_boolean_t autoddns = ISC_FALSE;
isc_result_t result;
(void)cfg_map_get(zconfig, "update-policy", &updatepolicy);
if (updatepolicy == NULL) {
dns_zone_setssutable(zone, NULL);
return (ISC_R_SUCCESS);
}
if (cfg_obj_isstring(updatepolicy) &&
strcmp("local", cfg_obj_asstring(updatepolicy)) == 0) {
autoddns = ISC_TRUE;
updatepolicy = NULL;
}
result = dns_ssutable_create(mctx, &table);
if (result != ISC_R_SUCCESS)
return (result);
for (element = cfg_list_first(updatepolicy);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *stmt = cfg_listelt_value(element);
const cfg_obj_t *mode = cfg_tuple_get(stmt, "mode");
const cfg_obj_t *identity = cfg_tuple_get(stmt, "identity");
const cfg_obj_t *matchtype = cfg_tuple_get(stmt, "matchtype");
const cfg_obj_t *dname = cfg_tuple_get(stmt, "name");
const cfg_obj_t *typelist = cfg_tuple_get(stmt, "types");
const char *str;
isc_boolean_t grant = ISC_FALSE;
isc_boolean_t usezone = ISC_FALSE;
unsigned int mtype = DNS_SSUMATCHTYPE_NAME;
dns_fixedname_t fname, fident;
isc_buffer_t b;
dns_rdatatype_t *types;
unsigned int i, n;
str = cfg_obj_asstring(mode);
if (strcasecmp(str, "grant") == 0)
grant = ISC_TRUE;
else if (strcasecmp(str, "deny") == 0)
grant = ISC_FALSE;
else
INSIST(0);
str = cfg_obj_asstring(matchtype);
if (strcasecmp(str, "name") == 0)
mtype = DNS_SSUMATCHTYPE_NAME;
else if (strcasecmp(str, "subdomain") == 0)
mtype = DNS_SSUMATCHTYPE_SUBDOMAIN;
else if (strcasecmp(str, "wildcard") == 0)
mtype = DNS_SSUMATCHTYPE_WILDCARD;
else if (strcasecmp(str, "self") == 0)
mtype = DNS_SSUMATCHTYPE_SELF;
else if (strcasecmp(str, "selfsub") == 0)
mtype = DNS_SSUMATCHTYPE_SELFSUB;
else if (strcasecmp(str, "selfwild") == 0)
mtype = DNS_SSUMATCHTYPE_SELFWILD;
else if (strcasecmp(str, "ms-self") == 0)
mtype = DNS_SSUMATCHTYPE_SELFMS;
else if (strcasecmp(str, "krb5-self") == 0)
mtype = DNS_SSUMATCHTYPE_SELFKRB5;
else if (strcasecmp(str, "ms-subdomain") == 0)
mtype = DNS_SSUMATCHTYPE_SUBDOMAINMS;
else if (strcasecmp(str, "krb5-subdomain") == 0)
mtype = DNS_SSUMATCHTYPE_SUBDOMAINKRB5;
else if (strcasecmp(str, "tcp-self") == 0)
mtype = DNS_SSUMATCHTYPE_TCPSELF;
else if (strcasecmp(str, "6to4-self") == 0)
mtype = DNS_SSUMATCHTYPE_6TO4SELF;
else if (strcasecmp(str, "zonesub") == 0) {
mtype = DNS_SSUMATCHTYPE_SUBDOMAIN;
usezone = ISC_TRUE;
} else if (strcasecmp(str, "external") == 0)
mtype = DNS_SSUMATCHTYPE_EXTERNAL;
else
INSIST(0);
dns_fixedname_init(&fident);
str = cfg_obj_asstring(identity);
isc_buffer_init(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
result = dns_name_fromtext(dns_fixedname_name(&fident), &b,
dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(identity, ns_g_lctx, ISC_LOG_ERROR,
"'%s' is not a valid name", str);
goto cleanup;
}
dns_fixedname_init(&fname);
if (usezone) {
result = dns_name_copy(dns_zone_getorigin(zone),
dns_fixedname_name(&fname),
NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(identity, ns_g_lctx, ISC_LOG_ERROR,
"error copying origin: %s",
isc_result_totext(result));
goto cleanup;
}
} else {
str = cfg_obj_asstring(dname);
isc_buffer_init(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
result = dns_name_fromtext(dns_fixedname_name(&fname),
&b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(identity, ns_g_lctx, ISC_LOG_ERROR,
"'%s' is not a valid name", str);
goto cleanup;
}
}
n = ns_config_listcount(typelist);
if (n == 0)
types = NULL;
else {
types = isc_mem_get(mctx, n * sizeof(dns_rdatatype_t));
if (types == NULL) {
result = ISC_R_NOMEMORY;
goto cleanup;
}
}
i = 0;
for (element2 = cfg_list_first(typelist);
element2 != NULL;
element2 = cfg_list_next(element2))
{
const cfg_obj_t *typeobj;
isc_textregion_t r;
INSIST(i < n);
typeobj = cfg_listelt_value(element2);
str = cfg_obj_asstring(typeobj);
DE_CONST(str, r.base);
r.length = strlen(str);
result = dns_rdatatype_fromtext(&types[i++], &r);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(identity, ns_g_lctx, ISC_LOG_ERROR,
"'%s' is not a valid type", str);
isc_mem_put(mctx, types,
n * sizeof(dns_rdatatype_t));
goto cleanup;
}
}
INSIST(i == n);
result = dns_ssutable_addrule(table, grant,
dns_fixedname_name(&fident),
mtype,
dns_fixedname_name(&fname),
n, types);
if (types != NULL)
isc_mem_put(mctx, types, n * sizeof(dns_rdatatype_t));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
/*
* If "update-policy local;" and a session key exists,
* then use the default policy, which is equivalent to:
* update-policy { grant <session-keyname> zonesub any; };
*/
if (autoddns) {
dns_rdatatype_t any = dns_rdatatype_any;
if (ns_g_server->session_keyname == NULL) {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
"failed to enable auto DDNS policy "
"for zone %s: session key not found",
zname);
result = ISC_R_NOTFOUND;
goto cleanup;
}
result = dns_ssutable_addrule(table, ISC_TRUE,
ns_g_server->session_keyname,
DNS_SSUMATCHTYPE_SUBDOMAIN,
dns_zone_getorigin(zone),
1, &any);
if (result != ISC_R_SUCCESS)
goto cleanup;
}
result = ISC_R_SUCCESS;
dns_zone_setssutable(zone, table);
cleanup:
dns_ssutable_detach(&table);
return (result);
}
static void
register_keys(const cfg_obj_t *control, const cfg_obj_t *keylist,
controlkeylist_t *keyids, isc_mem_t *mctx, const char *socktext)
{
controlkey_t *keyid, *next;
const cfg_obj_t *keydef;
char secret[1024];
isc_buffer_t b;
isc_result_t result;
/*
* Find the keys corresponding to the keyids used by this listener.
*/
for (keyid = ISC_LIST_HEAD(*keyids); keyid != NULL; keyid = next) {
next = ISC_LIST_NEXT(keyid, link);
result = cfgkeylist_find(keylist, keyid->keyname, &keydef);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't find key '%s' for use with "
"command channel %s",
keyid->keyname, socktext);
ISC_LIST_UNLINK(*keyids, keyid, link);
free_controlkey(keyid, mctx);
} else {
const cfg_obj_t *algobj = NULL;
const cfg_obj_t *secretobj = NULL;
const char *algstr = NULL;
const char *secretstr = NULL;
unsigned int algtype;
(void)cfg_map_get(keydef, "algorithm", &algobj);
(void)cfg_map_get(keydef, "secret", &secretobj);
INSIST(algobj != NULL && secretobj != NULL);
algstr = cfg_obj_asstring(algobj);
secretstr = cfg_obj_asstring(secretobj);
if (ns_config_getkeyalgorithm2(algstr, NULL,
&algtype, NULL) != ISC_R_SUCCESS)
{
cfg_obj_log(control, ns_g_lctx,
ISC_LOG_WARNING,
"unsupported algorithm '%s' in "
"key '%s' for use with command "
"channel %s",
algstr, keyid->keyname, socktext);
ISC_LIST_UNLINK(*keyids, keyid, link);
free_controlkey(keyid, mctx);
continue;
}
keyid->algorithm = algtype;
isc_buffer_init(&b, secret, sizeof(secret));
result = isc_base64_decodestring(secretstr, &b);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(keydef, ns_g_lctx, ISC_LOG_WARNING,
"secret for key '%s' on "
"command channel %s: %s",
keyid->keyname, socktext,
isc_result_totext(result));
ISC_LIST_UNLINK(*keyids, keyid, link);
free_controlkey(keyid, mctx);
continue;
}
keyid->secret.length = isc_buffer_usedlength(&b);
keyid->secret.base = isc_mem_get(mctx,
keyid->secret.length);
if (keyid->secret.base == NULL) {
cfg_obj_log(keydef, ns_g_lctx, ISC_LOG_WARNING,
"couldn't register key '%s': "
"out of memory", keyid->keyname);
ISC_LIST_UNLINK(*keyids, keyid, link);
free_controlkey(keyid, mctx);
break;
}
memmove(keyid->secret.base, isc_buffer_base(&b),
keyid->secret.length);
}
}
}
isc_result_t
ns_acl_fromconfig(cfg_obj_t *caml,
cfg_obj_t *cctx,
ns_aclconfctx_t *ctx,
isc_mem_t *mctx,
dns_acl_t **target)
{
isc_result_t result;
unsigned int count;
dns_acl_t *dacl = NULL;
dns_aclelement_t *de;
cfg_listelt_t *elt;
REQUIRE(target != NULL && *target == NULL);
count = 0;
for (elt = cfg_list_first(caml);
elt != NULL;
elt = cfg_list_next(elt))
count++;
result = dns_acl_create(mctx, count, &dacl);
if (result != ISC_R_SUCCESS)
return (result);
de = dacl->elements;
for (elt = cfg_list_first(caml);
elt != NULL;
elt = cfg_list_next(elt))
{
cfg_obj_t *ce = cfg_listelt_value(elt);
if (cfg_obj_istuple(ce)) {
/* This must be a negated element. */
ce = cfg_tuple_get(ce, "value");
de->negative = ISC_TRUE;
} else {
de->negative = ISC_FALSE;
}
if (cfg_obj_isnetprefix(ce)) {
/* Network prefix */
de->type = dns_aclelementtype_ipprefix;
cfg_obj_asnetprefix(ce,
&de->u.ip_prefix.address,
&de->u.ip_prefix.prefixlen);
} else if (cfg_obj_istype(ce, &cfg_type_keyref)) {
/* Key name */
de->type = dns_aclelementtype_keyname;
dns_name_init(&de->u.keyname, NULL);
result = convert_keyname(ce, mctx, &de->u.keyname);
if (result != ISC_R_SUCCESS)
goto cleanup;
} else if (cfg_obj_islist(ce)) {
/* Nested ACL */
de->type = dns_aclelementtype_nestedacl;
result = ns_acl_fromconfig(ce, cctx, ctx, mctx,
&de->u.nestedacl);
if (result != ISC_R_SUCCESS)
goto cleanup;
} else if (cfg_obj_isstring(ce)) {
/* ACL name */
char *name = cfg_obj_asstring(ce);
if (strcasecmp(name, "localhost") == 0) {
de->type = dns_aclelementtype_localhost;
} else if (strcasecmp(name, "localnets") == 0) {
de->type = dns_aclelementtype_localnets;
} else if (strcasecmp(name, "any") == 0) {
de->type = dns_aclelementtype_any;
} else if (strcasecmp(name, "none") == 0) {
de->type = dns_aclelementtype_any;
de->negative = ISC_TF(! de->negative);
} else {
de->type = dns_aclelementtype_nestedacl;
result = convert_named_acl(ce, cctx, ctx, mctx,
&de->u.nestedacl);
if (result != ISC_R_SUCCESS)
goto cleanup;
}
} else {
cfg_obj_log(ce, dns_lctx, ISC_LOG_WARNING,
"address match list contains "
"unsupported element type");
result = ISC_R_FAILURE;
goto cleanup;
}
de++;
dacl->length++;
}
*target = dacl;
return (ISC_R_SUCCESS);
cleanup:
dns_acl_detach(&dacl);
return (result);
}
static void
update_listener(ns_controls_t *cp, controllistener_t **listenerp,
const cfg_obj_t *control, const cfg_obj_t *config,
isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx,
const char *socktext, isc_sockettype_t type)
{
controllistener_t *listener;
const cfg_obj_t *allow;
const cfg_obj_t *global_keylist = NULL;
const cfg_obj_t *control_keylist = NULL;
dns_acl_t *new_acl = NULL;
controlkeylist_t keys;
isc_result_t result = ISC_R_SUCCESS;
for (listener = ISC_LIST_HEAD(cp->listeners);
listener != NULL;
listener = ISC_LIST_NEXT(listener, link))
if (isc_sockaddr_equal(addr, &listener->address))
break;
if (listener == NULL) {
*listenerp = NULL;
return;
}
/*
* There is already a listener for this sockaddr.
* Update the access list and key information.
*
* First try to deal with the key situation. There are a few
* possibilities:
* (a) It had an explicit keylist and still has an explicit keylist.
* (b) It had an automagic key and now has an explicit keylist.
* (c) It had an explicit keylist and now needs an automagic key.
* (d) It has an automagic key and still needs the automagic key.
*
* (c) and (d) are the annoying ones. The caller needs to know
* that it should use the automagic configuration for key information
* in place of the named.conf configuration.
*
* XXXDCL There is one other hazard that has not been dealt with,
* the problem that if a key change is being caused by a control
* channel reload, then the response will be with the new key
* and not able to be decrypted by the client.
*/
if (control != NULL)
get_key_info(config, control, &global_keylist,
&control_keylist);
if (control_keylist != NULL) {
INSIST(global_keylist != NULL);
ISC_LIST_INIT(keys);
result = controlkeylist_fromcfg(control_keylist,
listener->mctx, &keys);
if (result == ISC_R_SUCCESS) {
free_controlkeylist(&listener->keys, listener->mctx);
listener->keys = keys;
register_keys(control, global_keylist, &listener->keys,
listener->mctx, socktext);
}
} else {
free_controlkeylist(&listener->keys, listener->mctx);
result = get_rndckey(listener->mctx, &listener->keys);
}
if (result != ISC_R_SUCCESS && global_keylist != NULL) {
/*
* This message might be a little misleading since the
* "new keys" might in fact be identical to the old ones,
* but tracking whether they are identical just for the
* sake of avoiding this message would be too much trouble.
*/
if (control != NULL)
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't install new keys for "
"command channel %s: %s",
socktext, isc_result_totext(result));
else
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"couldn't install new keys for "
"command channel %s: %s",
socktext, isc_result_totext(result));
}
/*
* Now, keep the old access list unless a new one can be made.
*/
if (control != NULL && type == isc_sockettype_tcp) {
allow = cfg_tuple_get(control, "allow");
result = cfg_acl_fromconfig(allow, config, ns_g_lctx,
aclconfctx, listener->mctx, 0,
&new_acl);
} else {
result = dns_acl_any(listener->mctx, &new_acl);
}
if (result == ISC_R_SUCCESS) {
dns_acl_detach(&listener->acl);
dns_acl_attach(new_acl, &listener->acl);
dns_acl_detach(&new_acl);
/* XXXDCL say the old acl is still used? */
} else if (control != NULL)
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't install new acl for "
"command channel %s: %s",
socktext, isc_result_totext(result));
else
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"couldn't install new acl for "
"command channel %s: %s",
socktext, isc_result_totext(result));
if (result == ISC_R_SUCCESS && type == isc_sockettype_unix) {
isc_uint32_t perm, owner, group;
perm = cfg_obj_asuint32(cfg_tuple_get(control, "perm"));
owner = cfg_obj_asuint32(cfg_tuple_get(control, "owner"));
group = cfg_obj_asuint32(cfg_tuple_get(control, "group"));
result = ISC_R_SUCCESS;
if (listener->perm != perm || listener->owner != owner ||
listener->group != group)
result = isc_socket_permunix(&listener->address, perm,
owner, group);
if (result == ISC_R_SUCCESS) {
listener->perm = perm;
listener->owner = owner;
listener->group = group;
} else if (control != NULL)
cfg_obj_log(control, ns_g_lctx, ISC_LOG_WARNING,
"couldn't update ownership/permission for "
"command channel %s", socktext);
}
*listenerp = listener;
}
isc_result_t
cfg_acl_fromconfig(const cfg_obj_t *caml,
const cfg_obj_t *cctx,
isc_log_t *lctx,
cfg_aclconfctx_t *ctx,
isc_mem_t *mctx,
unsigned int nest_level,
dns_acl_t **target)
{
isc_result_t result;
dns_acl_t *dacl = NULL, *inneracl = NULL;
dns_aclelement_t *de;
const cfg_listelt_t *elt;
dns_iptable_t *iptab;
int new_nest_level = 0;
if (nest_level != 0)
new_nest_level = nest_level - 1;
REQUIRE(target != NULL);
REQUIRE(*target == NULL || DNS_ACL_VALID(*target));
if (*target != NULL) {
/*
* If target already points to an ACL, then we're being
* called recursively to configure a nested ACL. The
* nested ACL's contents should just be absorbed into its
* parent ACL.
*/
dns_acl_attach(*target, &dacl);
dns_acl_detach(target);
} else {
/*
* Need to allocate a new ACL structure. Count the items
* in the ACL definition that will require space in the
* elements table. (Note that if nest_level is nonzero,
* *everything* goes in the elements table.)
*/
int nelem;
if (nest_level == 0)
nelem = count_acl_elements(caml, cctx, NULL);
else
nelem = cfg_list_length(caml, ISC_FALSE);
result = dns_acl_create(mctx, nelem, &dacl);
if (result != ISC_R_SUCCESS)
return (result);
}
de = dacl->elements;
for (elt = cfg_list_first(caml);
elt != NULL;
elt = cfg_list_next(elt)) {
const cfg_obj_t *ce = cfg_listelt_value(elt);
isc_boolean_t neg;
if (cfg_obj_istuple(ce)) {
/* This must be a negated element. */
ce = cfg_tuple_get(ce, "value");
neg = ISC_TRUE;
dacl->has_negatives = ISC_TRUE;
} else
neg = ISC_FALSE;
/*
* If nest_level is nonzero, then every element is
* to be stored as a separate, nested ACL rather than
* merged into the main iptable.
*/
iptab = dacl->iptable;
if (nest_level != 0) {
result = dns_acl_create(mctx,
cfg_list_length(ce, ISC_FALSE),
&de->nestedacl);
if (result != ISC_R_SUCCESS)
goto cleanup;
iptab = de->nestedacl->iptable;
}
if (cfg_obj_isnetprefix(ce)) {
/* Network prefix */
isc_netaddr_t addr;
unsigned int bitlen;
cfg_obj_asnetprefix(ce, &addr, &bitlen);
/*
* If nesting ACLs (nest_level != 0), we negate
* the nestedacl element, not the iptable entry.
*/
result = dns_iptable_addprefix(iptab, &addr, bitlen,
ISC_TF(nest_level != 0 || !neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (nest_level > 0) {
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
} else
continue;
} else if (cfg_obj_islist(ce)) {
/*
* If we're nesting ACLs, put the nested
* ACL onto the elements list; otherwise
* merge it into *this* ACL. We nest ACLs
* in two cases: 1) sortlist, 2) if the
* nested ACL contains negated members.
*/
if (inneracl != NULL)
dns_acl_detach(&inneracl);
result = cfg_acl_fromconfig(ce, cctx, lctx,
ctx, mctx, new_nest_level,
&inneracl);
if (result != ISC_R_SUCCESS)
goto cleanup;
nested_acl:
if (nest_level > 0 || inneracl->has_negatives) {
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
if (de->nestedacl != NULL)
dns_acl_detach(&de->nestedacl);
dns_acl_attach(inneracl,
&de->nestedacl);
dns_acl_detach(&inneracl);
/* Fall through. */
} else {
dns_acl_merge(dacl, inneracl,
ISC_TF(!neg));
de += inneracl->length; /* elements added */
dns_acl_detach(&inneracl);
continue;
}
} else if (cfg_obj_istype(ce, &cfg_type_keyref)) {
/* Key name. */
de->type = dns_aclelementtype_keyname;
de->negative = neg;
dns_name_init(&de->keyname, NULL);
result = convert_keyname(ce, lctx, mctx,
&de->keyname);
if (result != ISC_R_SUCCESS)
goto cleanup;
} else if (cfg_obj_isstring(ce)) {
/* ACL name. */
const char *name = cfg_obj_asstring(ce);
if (strcasecmp(name, "any") == 0) {
/* Iptable entry with zero bit length. */
result = dns_iptable_addprefix(iptab, NULL, 0,
ISC_TF(nest_level != 0 || !neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (nest_level != 0) {
de->type = dns_aclelementtype_nestedacl;
de->negative = neg;
} else
continue;
} else if (strcasecmp(name, "none") == 0) {
/* none == !any */
/*
* We don't unconditional set
* dacl->has_negatives and
* de->negative to true so we can handle
* "!none;".
*/
result = dns_iptable_addprefix(iptab, NULL, 0,
ISC_TF(nest_level != 0 || neg));
if (result != ISC_R_SUCCESS)
goto cleanup;
if (!neg)
dacl->has_negatives = !neg;
if (nest_level != 0) {
de->type = dns_aclelementtype_nestedacl;
de->negative = !neg;
} else
continue;
#ifdef SUPPORT_GEOIP
} else if ((0 == (strncmp("country_", name, 8))) && (10 == strlen(name))) {
/* It is a country code */
de->type = dns_aclelementtype_ipcountry;
de->country[0] = name[8];
de->country[1] = name[9];
de->country[2] = '\0';
#endif
} else if (strcasecmp(name, "localhost") == 0) {
de->type = dns_aclelementtype_localhost;
de->negative = neg;
} else if (strcasecmp(name, "localnets") == 0) {
de->type = dns_aclelementtype_localnets;
de->negative = neg;
} else {
if (inneracl != NULL)
dns_acl_detach(&inneracl);
result = convert_named_acl(ce, cctx, lctx, ctx,
mctx, new_nest_level,
&inneracl);
if (result != ISC_R_SUCCESS)
goto cleanup;
goto nested_acl;
}
} else {
cfg_obj_log(ce, lctx, ISC_LOG_WARNING,
"address match list contains "
"unsupported element type");
result = ISC_R_FAILURE;
goto cleanup;
}
/*
* This should only be reached for localhost, localnets
* and keyname elements, and nested ACLs if nest_level is
* nonzero (i.e., in sortlists).
*/
if (de->nestedacl != NULL &&
de->type != dns_aclelementtype_nestedacl)
dns_acl_detach(&de->nestedacl);
dacl->node_count++;
de->node_num = dacl->node_count;
dacl->length++;
de++;
INSIST(dacl->length <= dacl->alloc);
}
dns_acl_attach(dacl, target);
result = ISC_R_SUCCESS;
cleanup:
if (inneracl != NULL)
dns_acl_detach(&inneracl);
dns_acl_detach(&dacl);
return (result);
}
