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1539. [bug] Open UDP sockets for notify-source and transfer-source

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that use reserved ports at startup. [RT #9475]
This commit is contained in:
Mark Andrews 2004-01-05 06:56:44 +00:00
parent fd44706162
commit 62700b67eb
5 changed files with 139 additions and 6 deletions
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3
CHANGES
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@ -18,7 +18,8 @@
1540. [placeholder] rt8934
1539. [placeholder] rt9475
1539. [bug] Open UDP sockets for notify-source and transfer-source
that use reserved ports at startup. [RT #9475]
1538. [placeholder] rt9997

11
bin/named/include/named/server.h
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@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: server.h,v 1.71 2003/01/20 05:46:10 marka Exp $ */
/* $Id: server.h,v 1.72 2004/01/05 06:56:44 marka Exp $ */
#ifndef NAMED_SERVER_H
#define NAMED_SERVER_H 1
@ -89,6 +89,9 @@ struct ns_server {
isc_uint64_t * querystats; /* Query statistics counters */
ns_controls_t * controls; /* Control channels */
unsigned int dispatchgen;
ns_dispatchlist_t dispatches;
};
#define NS_SERVER_MAGIC ISC_MAGIC('S','V','E','R')
@ -201,4 +204,10 @@ ns_server_freeze(ns_server_t *server, isc_boolean_t freeze, char *args);
isc_result_t
ns_server_dumprecursing(ns_server_t *server);
/*
* Maintain a list of dispatches that require reserved ports.
*/
void
ns_add_reserved_dispatch(ns_server_t *server, isc_sockaddr_t *addr);
#endif /* NAMED_SERVER_H */

4
bin/named/include/named/types.h
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@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: types.h,v 1.19 2001/05/08 03:42:34 gson Exp $ */
/* $Id: types.h,v 1.20 2004/01/05 06:56:44 marka Exp $ */
#ifndef NAMED_TYPES_H
#define NAMED_TYPES_H 1
@ -35,5 +35,7 @@ typedef struct ns_lwdclientmgr ns_lwdclientmgr_t;
typedef struct ns_lwsearchlist ns_lwsearchlist_t;
typedef struct ns_lwsearchctx ns_lwsearchctx_t;
typedef struct ns_controls ns_controls_t;
typedef struct ns_dispatch ns_dispatch_t;
typedef ISC_LIST(ns_dispatch_t) ns_dispatchlist_t;
#endif /* NAMED_TYPES_H */

120
bin/named/server.c
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@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: server.c,v 1.406 2003/10/26 21:33:44 marka Exp $ */
/* $Id: server.c,v 1.407 2004/01/05 06:56:44 marka Exp $ */
#include <config.h>
@ -120,6 +120,13 @@
fatal(msg, result); \
} while (0) \
struct ns_dispatch {
isc_sockaddr_t addr;
unsigned int dispatchgen;
dns_dispatch_t *dispatch;
ISC_LINK(struct ns_dispatch) link;
};
static void
fatal(const char *msg, isc_result_t result);
@ -148,6 +155,9 @@ configure_zone(cfg_obj_t *config, cfg_obj_t *zconfig, cfg_obj_t *vconfig,
isc_mem_t *mctx, dns_view_t *view,
ns_aclconfctx_t *aclconf);
static void
end_reserved_dispatches(ns_server_t *server, isc_boolean_t all);
/*
* Configure a single view ACL at '*aclp'. Get its configuration by
* calling 'getvcacl' (for per-view configuration) and maybe 'getscacl'
@ -2619,6 +2629,7 @@ shutdown_server(isc_task_t *task, isc_event_t *event) {
flush ? ": flushing changes" : "");
ns_controls_shutdown(server->controls);
end_reserved_dispatches(server, ISC_TRUE);
cfg_obj_destroy(ns_g_parser, &ns_g_config);
cfg_parser_destroy(&ns_g_parser);
@ -2760,6 +2771,8 @@ ns_server_create(isc_mem_t *mctx, ns_server_t **serverp) {
server->controls = NULL;
CHECKFATAL(ns_controls_create(server, &server->controls),
"ns_controls_create");
server->dispatchgen = 0;
ISC_LIST_INIT(server->dispatches);
server->magic = NS_SERVER_MAGIC;
*serverp = server;
@ -2819,14 +2832,117 @@ fatal(const char *msg, isc_result_t result) {
exit(1);
}
static void
start_reserved_dispatches(ns_server_t *server) {
REQUIRE(NS_SERVER_VALID(server));
server->dispatchgen++;
}
static void
end_reserved_dispatches(ns_server_t *server, isc_boolean_t all) {
ns_dispatch_t *dispatch;
REQUIRE(NS_SERVER_VALID(server));
for (dispatch = ISC_LIST_HEAD(server->dispatches);
dispatch != NULL;
dispatch = ISC_LIST_NEXT(dispatch, link)) {
if (!all && server->dispatchgen == dispatch-> dispatchgen)
continue;
dns_dispatch_detach(&dispatch->dispatch);
isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
}
}
void
ns_add_reserved_dispatch(ns_server_t *server, isc_sockaddr_t *addr) {
ns_dispatch_t *dispatch;
in_port_t port;
char addrbuf[ISC_SOCKADDR_FORMATSIZE];
isc_result_t result;
unsigned int attrs, attrmask;
REQUIRE(NS_SERVER_VALID(server));
port = isc_sockaddr_getport(addr);
if (port == 0 || port >= 1024)
return;
for (dispatch = ISC_LIST_HEAD(server->dispatches);
dispatch != NULL;
dispatch = ISC_LIST_NEXT(dispatch, link)) {
if (isc_sockaddr_equal(&dispatch->addr, addr))
break;
}
if (dispatch != NULL) {
dispatch->dispatchgen = server->dispatchgen;
return;
}
dispatch = isc_mem_get(server->mctx, sizeof(*dispatch));
if (dispatch == NULL) {
result = ISC_R_NOMEMORY;
goto cleanup;
}
dispatch->addr = *addr;
dispatch->dispatchgen = server->dispatchgen;
dispatch->dispatch = NULL;
attrs = 0;
attrs |= DNS_DISPATCHATTR_UDP;
switch (isc_sockaddr_pf(addr)) {
case AF_INET:
attrs |= DNS_DISPATCHATTR_IPV4;
break;
case AF_INET6:
attrs |= DNS_DISPATCHATTR_IPV6;
break;
default:
result = ISC_R_NOTIMPLEMENTED;
goto cleanup;
}
attrmask = 0;
attrmask |= DNS_DISPATCHATTR_UDP;
attrmask |= DNS_DISPATCHATTR_TCP;
attrmask |= DNS_DISPATCHATTR_IPV4;
attrmask |= DNS_DISPATCHATTR_IPV6;
result = dns_dispatch_getudp(ns_g_dispatchmgr, ns_g_socketmgr,
ns_g_taskmgr, &dispatch->addr, 4096,
1000, 32768, 16411, 16433,
attrs, attrmask, &dispatch->dispatch);
if (result != ISC_R_SUCCESS)
goto cleanup;
ISC_LIST_INITANDPREPEND(server->dispatches, dispatch, link);
return;
cleanup:
if (dispatch != NULL)
isc_mem_put(server->mctx, dispatch, sizeof(*dispatch));
isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"unable to create dispatch for reserved port %s: %s",
addrbuf, isc_result_totext(result));
}
static isc_result_t
loadconfig(ns_server_t *server) {
isc_result_t result;
start_reserved_dispatches(server);
result = load_configuration(ns_g_lwresdonly ?
lwresd_g_conffile : ns_g_conffile,
server,
ISC_FALSE);
if (result != ISC_R_SUCCESS)
if (result == ISC_R_SUCCESS)
end_reserved_dispatches(server, ISC_FALSE);
else
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
"reloading configuration failed: %s",

7
bin/named/zoneconf.c
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@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: zoneconf.c,v 1.107 2003/08/08 22:46:37 jinmei Exp $ */
/* $Id: zoneconf.c,v 1.108 2004/01/05 06:56:44 marka Exp $ */
#include <config.h>
@ -38,6 +38,7 @@
#include <named/config.h>
#include <named/globals.h>
#include <named/log.h>
#include <named/server.h>
#include <named/zoneconf.h>
/*
@ -461,11 +462,13 @@ ns_zone_configure(cfg_obj_t *config, cfg_obj_t *vconfig, cfg_obj_t *zconfig,
result = ns_config_get(maps, "notify-source", &obj);
INSIST(result == ISC_R_SUCCESS);
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);
RETERR(dns_zone_setnotifysrc6(zone, cfg_obj_assockaddr(obj)));
ns_add_reserved_dispatch(ns_g_server, cfg_obj_assockaddr(obj));
RETERR(configure_zone_acl(zconfig, vconfig, config,
"allow-transfer", ac, zone,
@ -625,11 +628,13 @@ ns_zone_configure(cfg_obj_t *config, cfg_obj_t *vconfig, cfg_obj_t *zconfig,
result = ns_config_get(maps, "transfer-source", &obj);
INSIST(result == ISC_R_SUCCESS);
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);
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);