mirror of
https://gitlab.isc.org/isc-projects/bind9
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53f0b6c34d
- ns__client_request() is now called by netmgr with an isc_nmhandle_t parameter. The handle can then be permanently associated with an ns_client object. - The task manager is paused so that isc_task events that may be triggred during client processing will not fire until after the netmgr is finished with it. Before any asynchronous event, the client MUST call isc_nmhandle_ref(client->handle), to prevent the client from being reset and reused while waiting for an event to process. When the asynchronous event is complete, isc_nmhandle_unref(client->handle) must be called to ensure the handle can be reused later. - reference counting of client objects is now handled in the nmhandle object. when the handle references drop to zero, the client's "reset" callback is used to free temporary resources and reiniialize it, whereupon the handle (and associated client) is placed in the "inactive handles" queue. when the sysstem is shutdown and the handles are cleaned up, the client's "put" callback is called to free all remaining resources. - because client allocation is no longer handled in the same way, the '-T clienttest' option has now been removed and is no longer used by any system tests. - the unit tests require wrapping the isc_nmhandle_unref() function; when LD_WRAP is supported, that is used. otherwise we link a libwrap.so interposer library and use that.
212 lines
5.0 KiB
C
212 lines
5.0 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#ifndef NS_SERVER_H
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#define NS_SERVER_H 1
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/*! \file */
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#include <inttypes.h>
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#include <stdbool.h>
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#include <isc/log.h>
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#include <isc/fuzz.h>
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#include <isc/magic.h>
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#include <isc/quota.h>
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#include <isc/random.h>
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#include <isc/sockaddr.h>
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#include <isc/types.h>
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#include <dns/acl.h>
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#include <dns/types.h>
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#include <ns/types.h>
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#define NS_EVENT_CLIENTCONTROL (ISC_EVENTCLASS_NS + 0)
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#define NS_SERVER_LOGQUERIES 0x00000001U /*%< log queries */
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#define NS_SERVER_NOAA 0x00000002U /*%< -T noaa */
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#define NS_SERVER_NOSOA 0x00000004U /*%< -T nosoa */
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#define NS_SERVER_NONEAREST 0x00000008U /*%< -T nonearest */
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#define NS_SERVER_NOEDNS 0x00000020U /*%< -T noedns */
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#define NS_SERVER_DROPEDNS 0x00000040U /*%< -T dropedns */
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#define NS_SERVER_NOTCP 0x00000080U /*%< -T notcp */
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#define NS_SERVER_DISABLE4 0x00000100U /*%< -6 */
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#define NS_SERVER_DISABLE6 0x00000200U /*%< -4 */
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#define NS_SERVER_FIXEDLOCAL 0x00000400U /*%< -T fixedlocal */
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#define NS_SERVER_SIGVALINSECS 0x00000800U /*%< -T sigvalinsecs */
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#define NS_SERVER_EDNSFORMERR 0x00001000U /*%< -T ednsformerr (STD13) */
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#define NS_SERVER_EDNSNOTIMP 0x00002000U /*%< -T ednsnotimp */
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#define NS_SERVER_EDNSREFUSED 0x00004000U /*%< -T ednsrefused */
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/*%
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* Type for callback function to get hostname.
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*/
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typedef isc_result_t
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(*ns_hostnamecb_t)(char *buf, size_t len);
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/*%
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* Type for callback function to signal the fuzzer thread
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* when built with AFL.
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*/
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typedef void
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(*ns_fuzzcb_t)(void);
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/*%
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* Type for callback function to get the view that can answer a query.
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*/
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typedef isc_result_t
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(*ns_matchview_t)(isc_netaddr_t *srcaddr, isc_netaddr_t *destaddr,
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dns_message_t *message, dns_aclenv_t *env,
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isc_result_t *sigresultp, dns_view_t **viewp);
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/*%
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* Server context.
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*/
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struct ns_server {
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unsigned int magic;
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isc_mem_t * mctx;
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isc_refcount_t references;
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/*% Server cookie secret and algorithm */
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unsigned char secret[32];
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ns_cookiealg_t cookiealg;
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ns_altsecretlist_t altsecrets;
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bool answercookie;
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/*% Quotas */
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isc_quota_t recursionquota;
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isc_quota_t tcpquota;
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isc_quota_t xfroutquota;
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/*% Test options and other configurables */
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uint32_t options;
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unsigned int delay;
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unsigned int initialtimo;
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unsigned int idletimo;
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unsigned int keepalivetimo;
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unsigned int advertisedtimo;
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dns_acl_t *blackholeacl;
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dns_acl_t *keepresporder;
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uint16_t udpsize;
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uint16_t transfer_tcp_message_size;
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bool interface_auto;
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dns_tkeyctx_t * tkeyctx;
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/*% Server id for NSID */
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char * server_id;
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ns_hostnamecb_t gethostname;
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/*% Fuzzer callback */
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isc_fuzztype_t fuzztype;
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ns_fuzzcb_t fuzznotify;
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/*% Callback to find a matching view for a query */
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ns_matchview_t matchingview;
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/*% Stats counters */
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ns_stats_t * nsstats;
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dns_stats_t * rcvquerystats;
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dns_stats_t * opcodestats;
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dns_stats_t * rcodestats;
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isc_stats_t * udpinstats4;
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isc_stats_t * udpoutstats4;
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isc_stats_t * udpinstats6;
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isc_stats_t * udpoutstats6;
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isc_stats_t * tcpinstats4;
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isc_stats_t * tcpoutstats4;
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isc_stats_t * tcpinstats6;
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isc_stats_t * tcpoutstats6;
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};
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struct ns_altsecret {
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ISC_LINK(ns_altsecret_t) link;
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unsigned char secret[32];
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};
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isc_result_t
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ns_server_create(isc_mem_t *mctx, ns_matchview_t matchingview,
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ns_server_t **sctxp);
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/*%<
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* Create a server context object with default settings.
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*/
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void
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ns_server_attach(ns_server_t *src, ns_server_t **dest);
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/*%<
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* Attach a server context.
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*
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* Requires:
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*\li 'src' is valid.
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*/
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void
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ns_server_detach(ns_server_t **sctxp);
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/*%<
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* Detach from a server context. If its reference count drops to zero, destroy
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* it, freeing its memory.
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*
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* Requires:
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*\li '*sctxp' is valid.
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* Ensures:
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*\li '*sctxp' is NULL on return.
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*/
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isc_result_t
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ns_server_setserverid(ns_server_t *sctx, const char *serverid);
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/*%<
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* Set sctx->server_id to 'serverid'. If it was set previously, free the memory.
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*
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* Requires:
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*\li 'sctx' is valid.
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*/
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void
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ns_server_settimeouts(ns_server_t *sctx, unsigned int initial,
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unsigned int idle, unsigned int keepalive,
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unsigned int advertised);
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void
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ns_server_gettimeouts(ns_server_t *sctx, unsigned int *initial,
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unsigned int *idle, unsigned int *keepalive,
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unsigned int *advertised);
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/*%<
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* Set/get tcp-timeout values.
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*
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* Requires:
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*\li 'sctx' is valid.
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*/
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void
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ns_server_setoption(ns_server_t *sctx, unsigned int option,
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bool value);
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/*%<
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* Set the given options on (if 'value' == #true)
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* or off (if 'value' == #false).
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*
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* Requires:
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*\li 'sctx' is valid
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*/
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bool
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ns_server_getoption(ns_server_t *sctx, unsigned int option);
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/*%<
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* Returns the current value of the specified server option.
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*
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* Requires:
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*\li 'sctx' is valid.
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*/
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#endif /* NS_SERVER_H */
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