453 lines
13 KiB
C
453 lines
13 KiB
C
#if !defined(lint) && !defined(SABER)
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static const char sccsid[] = "@(#)ns_stats.c 4.10 (Berkeley) 6/27/90";
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static const char rcsid[] = "$Id: ns_stats.c,v 8.34 2001/08/09 13:17:21 marka Exp $";
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#endif /* not lint */
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/*
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* Copyright (c) 1986
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Portions Copyright (c) 1993 by Digital Equipment Corporation.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Digital Equipment Corporation not be used in advertising or
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* publicity pertaining to distribution of the document or software without
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* specific, written prior permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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/*
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* Portions Copyright (c) 1996-2000 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include "port_before.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <resolv.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <isc/eventlib.h>
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#include <isc/logging.h>
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#include <isc/memcluster.h>
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#include <isc/tree.h>
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#include "port_after.h"
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#ifdef HAVE_GETRUSAGE /* XXX */
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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#include "named.h"
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static u_long typestats[T_ANY+1];
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static void nameserStats(FILE *);
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static u_int32_t ns_stats_cnt = 0;
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static int ns_stats_disabled = 0;
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void
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ns_stats_dumpandclear() {
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time_t timenow = time(NULL);
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FILE *f;
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ns_stats();
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if (!(f = fopen(server_options->stats_filename, "a"))) {
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ns_notice(ns_log_statistics, "cannot open stat file, \"%s\"",
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server_options->stats_filename);
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}
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if (f != NULL) {
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(void) fchown(fileno(f), user_id, group_id);
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fprintf(f, "+++ Host Statistics Cleared +++ (%ld) %s",
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(long)timenow, checked_ctime(&timenow));
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(void) my_fclose(f);
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}
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ns_freestats();
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}
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void
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ns_stats() {
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time_t timenow = time(NULL);
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FILE *f;
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int i;
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ns_notice(ns_log_statistics, "dumping nameserver stats");
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if (!(f = fopen(server_options->stats_filename, "a"))) {
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ns_notice(ns_log_statistics, "cannot open stat file, \"%s\"",
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server_options->stats_filename);
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return;
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}
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(void) fchown(fileno(f), user_id, group_id);
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fprintf(f, "+++ Statistics Dump +++ (%ld) %s",
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(long)timenow, checked_ctime(&timenow));
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fprintf(f, "%ld\ttime since boot (secs)\n",
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(long)(timenow - boottime));
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fprintf(f, "%ld\ttime since reset (secs)\n",
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(long)(timenow - resettime));
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/* query type statistics */
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fprintf(f, "%lu\tUnknown query types\n", (u_long)typestats[0]);
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for (i = 1; i < T_ANY+1; i++)
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fprintf(f, "%lu\t%s queries\n", typestats[i], p_type(i));
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/* name server statistics */
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nameserStats(f);
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fprintf(f, "--- Statistics Dump --- (%ld) %s",
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(long)timenow, checked_ctime(&timenow));
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(void) my_fclose(f);
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/* Now do the memory statistics file */
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if (!(f = fopen(server_options->memstats_filename, "a"))) {
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ns_notice(ns_log_statistics, "cannot open memstat file, \"%s\"",
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server_options->memstats_filename);
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return;
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}
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(void) fchown(fileno(f), user_id, group_id);
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fprintf(f, "+++ Memory Statistics Dump +++ (%ld) %s",
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(long)timenow, checked_ctime(&timenow));
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fprintf(f, "%ld\ttime since boot (secs)\n",
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(long)(timenow - boottime));
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fprintf(f, "%ld\ttime since reset (secs)\n",
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(long)(timenow - resettime));
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fprintf(f, "++ Memory Statistics ++\n");
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memstats(f);
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fprintf(f, "-- Memory Statistics --\n");
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fprintf(f, "--- Memory Statistics Dump --- (%ld) %s",
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(long)timenow, checked_ctime(&timenow));
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(void) my_fclose(f);
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ns_notice(ns_log_statistics, "done dumping nameserver stats");
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}
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void
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qtypeIncr(qtype)
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int qtype;
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{
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if (qtype < T_A || qtype > T_ANY)
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qtype = 0; /* bad type */
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typestats[qtype]++;
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}
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static tree *nameserTree;
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static int nameserInit;
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static FILE *nameserStatsFile;
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static const char *statNames[nssLast] = {
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"RR", /* sent us an answer */
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"RNXD", /* sent us a negative response */
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"RFwdR", /* sent us a response we had to fwd */
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"RDupR", /* sent us an extra answer */
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"RFail", /* sent us a SERVFAIL */
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"RFErr", /* sent us a FORMERR */
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"RErr", /* sent us some other error */
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"RAXFR", /* sent us an AXFR */
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"RLame", /* sent us a lame delegation */
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"ROpts", /* sent us some IP options */
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"SSysQ", /* sent them a sysquery */
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"SAns", /* sent them an answer */
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"SFwdQ", /* fwdd a query to them */
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"SDupQ", /* sent them a retry */
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"SErr", /* sent failed (in sendto) */
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"RQ", /* sent us a query */
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"RIQ", /* sent us an inverse query */
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"RFwdQ", /* sent us a query we had to fwd */
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"RDupQ", /* sent us a retry */
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"RTCP", /* sent us a query using TCP */
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"SFwdR", /* fwdd a response to them */
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"SFail", /* sent them a SERVFAIL */
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"SFErr", /* sent them a FORMERR */
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"SNaAns", /* sent them a non autoritative answer */
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"SNXD", /* sent them a negative response */
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"RUQ", /* sent us an unapproved query */
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"RURQ", /* sent us an unapproved recursive query */
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"RUXFR", /* sent us an unapproved AXFR or IXFR */
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"RUUpd", /* sent us an unapproved update */
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};
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/*
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* Note that addresses in network byte order always have the high byte first.
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* XXX - this is horribly IPv4 dependent, but it's performance critical.
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*/
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static int
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nameserCompar(const tree_t t1, const tree_t t2) {
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u_char *p1 = (u_char *)t1, *p2 = (u_char *)t2;
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int i;
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for (i = INADDRSZ; i > 0; i--) {
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u_char c1 = *p1++, c2 = *p2++;
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if (c1 < c2)
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return (-1);
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if (c1 > c2)
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return (1);
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}
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return (0);
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}
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struct nameser *
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nameserFind(addr, flags)
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struct in_addr addr;
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int flags;
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{
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struct nameser dummy;
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struct nameser *ns;
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if (!nameserInit) {
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tree_init(&nameserTree);
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nameserInit++;
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ns_stats_cnt = 0;
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ns_stats_disabled = 0;
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}
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dummy.addr = addr;
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ns = (struct nameser *)tree_srch(&nameserTree, nameserCompar,
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(tree_t)&dummy);
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if (ns == NULL && (flags & NS_F_INSERT) != 0) {
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if (server_options->max_host_stats != 0 &&
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ns_stats_cnt > server_options->max_host_stats) {
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if (!ns_stats_disabled)
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ns_notice(ns_log_statistics,
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"ns_stats_disabled: %s reached",
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"host-statistics-max");
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ns_stats_disabled = 1;
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return (NULL);
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}
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ns = (struct nameser *)memget(sizeof(struct nameser));
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if (ns == NULL) {
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nomem: if (!haveComplained((u_long)nameserFind, 0))
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ns_notice(ns_log_statistics,
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"nameserFind: memget failed; %s",
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strerror(errno));
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return (NULL);
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}
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memset(ns, 0, sizeof *ns);
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ns->addr = addr;
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if (!tree_add(&nameserTree, nameserCompar, (tree_t)ns, NULL)) {
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int save = errno;
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memput(ns, sizeof *ns);
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errno = save;
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goto nomem;
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}
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ns_stats_cnt++;
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}
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return (ns);
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}
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static void
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nameserStatsOut(f, stats)
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FILE *f;
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u_long stats[];
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{
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int i;
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const char *pre = "\t";
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for (i = 0; i < (int)nssLast; i++) {
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fprintf(f, "%s%lu", pre, (u_long)stats[i]);
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pre = ((i+1) % 5) ? " " : " ";
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}
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fputc('\n', f);
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}
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static void
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nameserStatsHdr(f)
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FILE *f;
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{
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int i;
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const char *pre = "\t";
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fprintf(f, "(Legend)\n");
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for (i = 0; i < (int)nssLast; i++) {
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fprintf(f, "%s%s", pre,
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statNames[i] ? statNames[i] : "");
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pre = ((i+1) % 5) ? "\t" : "\n\t";
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}
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fputc('\n', f);
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}
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static int
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nameserStatsTravUAR(t)
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tree_t t;
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{
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struct nameser *ns = (struct nameser *)t;
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fprintf(nameserStatsFile, "[%s]\n", /* : rtt %u */
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inet_ntoa(ns->addr) /*, ns->rtt*/ );
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nameserStatsOut(nameserStatsFile, ns->stats);
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return (1);
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}
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static void
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nameserStats(f)
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FILE *f;
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{
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nameserStatsFile = f;
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fprintf(f, "++ Name Server Statistics ++\n");
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nameserStatsHdr(f);
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fprintf(f, "(Global)\n");
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nameserStatsOut(f, globalStats);
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if (NS_OPTION_P(OPTION_HOSTSTATS)) {
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tree_trav(&nameserTree, nameserStatsTravUAR);
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if (ns_stats_disabled)
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fprintf(f, "++ Host Statistics Incomplete ++\n");
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}
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fprintf(f, "-- Name Server Statistics --\n");
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nameserStatsFile = NULL;
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}
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void
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ns_logstats(evContext ctx, void *uap, struct timespec due,
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struct timespec inter)
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{
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char buffer[1024];
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char buffer2[32], header[128];
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time_t timenow = time(NULL);
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int i;
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#ifdef HAVE_GETRUSAGE
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struct rusage usage, childu;
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#endif /*HAVE_GETRUSAGE*/
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#ifdef HAVE_GETRUSAGE
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# define tv_float(tv) ((tv).tv_sec + ((tv).tv_usec / 1000000.0))
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UNUSED(ctx);
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UNUSED(uap);
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UNUSED(due);
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UNUSED(inter);
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getrusage(RUSAGE_SELF, &usage);
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getrusage(RUSAGE_CHILDREN, &childu);
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/*
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* Get around a stupid compiler bug in gcc on solaris.
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* There is a problem if three or more doubles are passed to
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* sprintf.
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* <http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=337&database=gcc>
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*/
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sprintf(buffer, "CPU=%gu/%gs CHILDCPU=", tv_float(usage.ru_utime),
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tv_float(usage.ru_stime));
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sprintf(header, "%gu/%gs", tv_float(childu.ru_utime),
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tv_float(childu.ru_stime));
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ns_info(ns_log_statistics, "USAGE %lu %lu %s%s", (u_long)timenow,
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(u_long)boottime, buffer, header);
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# undef tv_float
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#endif /*HAVE_GETRUSAGE*/
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sprintf(header, "NSTATS %lu %lu", (u_long)timenow, (u_long)boottime);
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strcpy(buffer, header);
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for (i = 0; i < T_ANY+1; i++) {
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if (typestats[i]) {
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sprintf(buffer2, " %s=%lu", p_type(i), typestats[i]);
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if (strlen(buffer) + strlen(buffer2) >
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sizeof(buffer) - 1) {
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ns_info(ns_log_statistics, "%s", buffer);
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strcpy(buffer, header);
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}
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strcat(buffer, buffer2);
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}
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}
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ns_info(ns_log_statistics, "%s", buffer);
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sprintf(header, "XSTATS %lu %lu", (u_long)timenow, (u_long)boottime);
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strcpy(buffer, header);
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for (i = 0; i < (int)nssLast; i++) {
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sprintf(buffer2, " %s=%lu",
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statNames[i]?statNames[i]:"?", (u_long)globalStats[i]);
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if (strlen(buffer) + strlen(buffer2) > sizeof(buffer) - 1) {
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ns_info(ns_log_statistics, "%s", buffer);
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strcpy(buffer, header);
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}
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strcat(buffer, buffer2);
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}
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ns_info(ns_log_statistics, "%s", buffer);
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}
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static void
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nameserFree(void *uap) {
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struct nameser *ns = uap;
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memput(ns, sizeof *ns);
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}
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void
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ns_freestats(void) {
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if (nameserTree == NULL)
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return;
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tree_mung(&nameserTree, nameserFree);
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nameserInit = 0;
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ns_stats_cnt = 0;
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ns_stats_disabled = 0;
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}
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