From 97131650ea6bf9f16b775743e9931a91ea441887 Mon Sep 17 00:00:00 2001
From: Thomas Guyot-Sionnest <dermoth@users.sourceforge.net>
Date: Fri, 23 Nov 2007 21:47:04 +0000
Subject: Rename check_ntp* and merge change in Trunk
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/branches/dermoth_ntp_rework@1832 f882894a-f735-0410-b71e-b25c423dba1c
---
plugins/check_ntpd.c | 618 ---------------------------------------------------
1 file changed, 618 deletions(-)
delete mode 100644 plugins/check_ntpd.c
(limited to 'plugins/check_ntpd.c')
diff --git a/plugins/check_ntpd.c b/plugins/check_ntpd.c
deleted file mode 100644
index 840fe0ac..00000000
--- a/plugins/check_ntpd.c
+++ /dev/null
@@ -1,618 +0,0 @@
-/******************************************************************************
-*
-* Nagios check_ntp_peer plugin
-*
-* License: GPL
-* Copyright (c) 2006 sean finney <seanius@seanius.net>
-* Copyright (c) 2007 nagios-plugins team
-*
-* Last Modified: $Date$
-*
-* Description:
-*
-* This file contains the check_ntp_peer plugin
-*
-* This plugin to check ntp servers independant of any commandline
-* programs or external libraries.
-*
-*
-* License Information:
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-
-*****************************************************************************/
-
-const char *progname = "check_ntp_peer";
-const char *revision = "$Revision$";
-const char *copyright = "2007";
-const char *email = "nagiosplug-devel@lists.sourceforge.net";
-
-#include "common.h"
-#include "netutils.h"
-#include "utils.h"
-
-static char *server_address=NULL;
-static int verbose=0;
-static short do_offset=0;
-static char *owarn="60";
-static char *ocrit="120";
-static short do_stratum=0;
-static char *swarn="16";
-static char *scrit="16";
-static short do_jitter=0;
-static char *jwarn="5000";
-static char *jcrit="10000";
-static int syncsource_found=0;
-
-int process_arguments (int, char **);
-thresholds *offset_thresholds = NULL;
-thresholds *jitter_thresholds = NULL;
-thresholds *stratum_thresholds = NULL;
-void print_help (void);
-void print_usage (void);
-
-/* max size of control message data */
-#define MAX_CM_SIZE 468
-
-/* this structure holds everything in an ntp control message as per rfc1305 */
-typedef struct {
- uint8_t flags; /* byte with leapindicator,vers,mode. see macros */
- uint8_t op; /* R,E,M bits and Opcode */
- uint16_t seq; /* Packet sequence */
- uint16_t status; /* Clock status */
- uint16_t assoc; /* Association */
- uint16_t offset; /* Similar to TCP sequence # */
- uint16_t count; /* # bytes of data */
- char data[MAX_CM_SIZE]; /* ASCII data of the request */
- /* NB: not necessarily NULL terminated! */
-} ntp_control_message;
-
-/* this is an association/status-word pair found in control packet reponses */
-typedef struct {
- uint16_t assoc;
- uint16_t status;
-} ntp_assoc_status_pair;
-
-/* bits 1,2 are the leap indicator */
-#define LI_MASK 0xc0
-#define LI(x) ((x&LI_MASK)>>6)
-#define LI_SET(x,y) do{ x |= ((y<<6)&LI_MASK); }while(0)
-/* and these are the values of the leap indicator */
-#define LI_NOWARNING 0x00
-#define LI_EXTRASEC 0x01
-#define LI_MISSINGSEC 0x02
-#define LI_ALARM 0x03
-/* bits 3,4,5 are the ntp version */
-#define VN_MASK 0x38
-#define VN(x) ((x&VN_MASK)>>3)
-#define VN_SET(x,y) do{ x |= ((y<<3)&VN_MASK); }while(0)
-#define VN_RESERVED 0x02
-/* bits 6,7,8 are the ntp mode */
-#define MODE_MASK 0x07
-#define MODE(x) (x&MODE_MASK)
-#define MODE_SET(x,y) do{ x |= (y&MODE_MASK); }while(0)
-/* here are some values */
-#define MODE_CLIENT 0x03
-#define MODE_CONTROLMSG 0x06
-/* In control message, bits 8-10 are R,E,M bits */
-#define REM_MASK 0xe0
-#define REM_RESP 0x80
-#define REM_ERROR 0x40
-#define REM_MORE 0x20
-/* In control message, bits 11 - 15 are opcode */
-#define OP_MASK 0x1f
-#define OP_SET(x,y) do{ x |= (y&OP_MASK); }while(0)
-#define OP_READSTAT 0x01
-#define OP_READVAR 0x02
-/* In peer status bytes, bits 6,7,8 determine clock selection status */
-#define PEER_SEL(x) ((ntohs(x)>>8)&0x07)
-#define PEER_INCLUDED 0x04
-#define PEER_SYNCSOURCE 0x06
-
-/* NTP control message header is 12 bytes, plus any data in the data
- * field, plus null padding to the nearest 32-bit boundary per rfc.
- */
-#define SIZEOF_NTPCM(m) (12+ntohs(m.count)+((m.count)?4-(ntohs(m.count)%4):0))
-
-/* finally, a little helper or two for debugging: */
-#define DBG(x) do{if(verbose>1){ x; }}while(0);
-#define PRINTSOCKADDR(x) \
- do{ \
- printf("%u.%u.%u.%u", (x>>24)&0xff, (x>>16)&0xff, (x>>8)&0xff, x&0xff);\
- }while(0);
-
-void print_ntp_control_message(const ntp_control_message *p){
- int i=0, numpeers=0;
- const ntp_assoc_status_pair *peer=NULL;
-
- printf("control packet contents:\n");
- printf("\tflags: 0x%.2x , 0x%.2x\n", p->flags, p->op);
- printf("\t li=%d (0x%.2x)\n", LI(p->flags), p->flags&LI_MASK);
- printf("\t vn=%d (0x%.2x)\n", VN(p->flags), p->flags&VN_MASK);
- printf("\t mode=%d (0x%.2x)\n", MODE(p->flags), p->flags&MODE_MASK);
- printf("\t response=%d (0x%.2x)\n", (p->op&REM_RESP)>0, p->op&REM_RESP);
- printf("\t more=%d (0x%.2x)\n", (p->op&REM_MORE)>0, p->op&REM_MORE);
- printf("\t error=%d (0x%.2x)\n", (p->op&REM_ERROR)>0, p->op&REM_ERROR);
- printf("\t op=%d (0x%.2x)\n", p->op&OP_MASK, p->op&OP_MASK);
- printf("\tsequence: %d (0x%.2x)\n", ntohs(p->seq), ntohs(p->seq));
- printf("\tstatus: %d (0x%.2x)\n", ntohs(p->status), ntohs(p->status));
- printf("\tassoc: %d (0x%.2x)\n", ntohs(p->assoc), ntohs(p->assoc));
- printf("\toffset: %d (0x%.2x)\n", ntohs(p->offset), ntohs(p->offset));
- printf("\tcount: %d (0x%.2x)\n", ntohs(p->count), ntohs(p->count));
- numpeers=ntohs(p->count)/(sizeof(ntp_assoc_status_pair));
- if(p->op&REM_RESP && p->op&OP_READSTAT){
- peer=(ntp_assoc_status_pair*)p->data;
- for(i=0;i<numpeers;i++){
- printf("\tpeer id %.2x status %.2x",
- ntohs(peer[i].assoc), ntohs(peer[i].status));
- if (PEER_SEL(peer[i].status) >= PEER_INCLUDED){
- if(PEER_SEL(peer[i].status) >= PEER_SYNCSOURCE){
- printf(" <-- current sync source");
- } else {
- printf(" <-- current sync candidate");
- }
- }
- printf("\n");
- }
- }
-}
-
-char *extract_value(const char *varlist, const char *name){
- char *tmpvarlist=NULL, *tmpkey=NULL, *value=NULL;
- int last=0;
-
- tmpvarlist = strdup(varlist);
- tmpkey = strtok(tmpvarlist, "=");
-
- do {
- if(strstr(tmpkey, name) != NULL) {
- value = strtok(NULL, ",");
- last = 1;
- }
- } while (last == 0 && (tmpkey = strtok(NULL, "=")));
-
- return value;
-}
-
-void
-setup_control_request(ntp_control_message *p, uint8_t opcode, uint16_t seq){
- memset(p, 0, sizeof(ntp_control_message));
- LI_SET(p->flags, LI_NOWARNING);
- VN_SET(p->flags, VN_RESERVED);
- MODE_SET(p->flags, MODE_CONTROLMSG);
- OP_SET(p->op, opcode);
- p->seq = htons(seq);
- /* Remaining fields are zero for requests */
-}
-
-/* XXX handle responses with the error bit set */
-int ntp_request(const char *host, double *offset, int *offset_result, double *jitter, int *stratum){
- int conn=-1, i, npeers=0, num_candidates=0;
- int min_peer_sel=PEER_INCLUDED;
- int peers_size=0, peer_offset=0;
- int status;
- ntp_assoc_status_pair *peers=NULL;
- ntp_control_message req;
- const char *getvar = "stratum,offset,jitter";
- char *value=NULL, *nptr=NULL;
- void *tmp;
-
- status = STATE_OK;
- *offset_result = STATE_UNKNOWN;
- *jitter = *stratum = -1;
-
- /* Long-winded explanation:
- * Getting the sync peer offset, jitter and stratum requires a number of
- * steps:
- * 1) Send a READSTAT request.
- * 2) Interpret the READSTAT reply
- * a) The data section contains a list of peer identifiers (16 bits)
- * and associated status words (16 bits)
- * b) We want the value of 0x06 in the SEL (peer selection) value,
- * which means "current synchronizatin source". If that's missing,
- * we take anything better than 0x04 (see the rfc for details) but
- * set a minimum of warning.
- * 3) Send a READVAR request for information on each peer identified
- * in 2b greater than the minimum selection value.
- * 4) Extract the offset, jitter and stratum value from the data[]
- * (it's ASCII)
- */
- my_udp_connect(server_address, 123, &conn);
-
- /* keep sending requests until the server stops setting the
- * REM_MORE bit, though usually this is only 1 packet. */
- do{
- setup_control_request(&req, OP_READSTAT, 1);
- DBG(printf("sending READSTAT request"));
- write(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
- /* Attempt to read the largest size packet possible */
- req.count=htons(MAX_CM_SIZE);
- DBG(printf("recieving READSTAT response"))
- read(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
- /* Each peer identifier is 4 bytes in the data section, which
- * we represent as a ntp_assoc_status_pair datatype.
- */
- peers_size+=ntohs(req.count);
- if((tmp=realloc(peers, peers_size)) == NULL)
- free(peers), die(STATE_UNKNOWN, "can not (re)allocate 'peers' buffer\n");
- peers=tmp;
- memcpy((void*)((ptrdiff_t)peers+peer_offset), (void*)req.data, ntohs(req.count));
- npeers=peers_size/sizeof(ntp_assoc_status_pair);
- peer_offset+=ntohs(req.count);
- } while(req.op&REM_MORE);
-
- /* first, let's find out if we have a sync source, or if there are
- * at least some candidates. in the case of the latter we'll issue
- * a warning but go ahead with the check on them. */
- for (i = 0; i < npeers; i++){
- if (PEER_SEL(peers[i].status) >= PEER_INCLUDED){
- num_candidates++;
- if(PEER_SEL(peers[i].status) >= PEER_SYNCSOURCE){
- syncsource_found=1;
- min_peer_sel=PEER_SYNCSOURCE;
- }
- }
- }
- if(verbose) printf("%d candiate peers available\n", num_candidates);
- if(verbose && syncsource_found) printf("synchronization source found\n");
- if(! syncsource_found){
- status = STATE_WARNING;
- if(verbose) printf("warning: no synchronization source found\n");
- }
-
-
- for (i = 0; i < npeers; i++){
- /* Only query this server if it is the current sync source */
- if (PEER_SEL(peers[i].status) >= min_peer_sel){
- if(verbose) printf("Getting offset, jitter and stratum for peer %.2x\n", ntohs(peers[i].assoc));
- setup_control_request(&req, OP_READVAR, 2);
- req.assoc = peers[i].assoc;
- /* Putting the wanted variable names in the request
- * cause the server to provide _only_ the requested values.
- * thus reducing net traffic, guaranteeing us only a single
- * datagram in reply, and making intepretation much simpler
- */
- /* Older servers doesn't know what jitter is, so if we get an
- * error on the first pass we redo it with "dispersion" */
- strncpy(req.data, getvar, MAX_CM_SIZE-1);
- req.count = htons(strlen(getvar));
- DBG(printf("sending READVAR request...\n"));
- write(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
-
- req.count = htons(MAX_CM_SIZE);
- DBG(printf("recieving READVAR response...\n"));
- read(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
-
- if(req.op&REM_ERROR && strstr(getvar, "jitter")) {
- if(verbose) printf("The 'jitter' command failed (old ntp server?)\nRestarting with 'dispersion'...\n");
- getvar = "stratum,offset,dispersion";
- i--;
- continue;
- }
-
- if(verbose > 1)
- printf("Server responded: >>>%s<<<\n", req.data);
-
- /* get the offset */
- if(verbose)
- printf("parsing offset from peer %.2x: ", ntohs(peers[i].assoc));
-
- value = extract_value(req.data, "offset");
- /* Convert the value if we have one */
- if(value != NULL)
- *offset = strtod(value, &nptr) / 1000;
- /* If value is null or no conversion was performed */
- if(value == NULL || value==nptr) {
- printf("warning: unable to read server offset response.\n");
- status = max_state_alt(status, STATE_CRITICAL);
- } else {
- *offset_result = STATE_OK;
- if(verbose) printf("%g\n", *offset);
- }
-
- if(do_jitter) {
- /* first reset the pointers */
- value = NULL, nptr=NULL;
- /* get the jitter */
- if(verbose) {
- printf("parsing jitter from peer %.2x: ", ntohs(peers[i].assoc));
- }
- value = extract_value(req.data, strstr(getvar, "dispersion") != NULL ? "dispersion" : "jitter");
- /* Convert the value if we have one */
- if(value != NULL)
- *jitter = strtod(value, &nptr);
- /* If value is null or no conversion was performed */
- if(value == NULL || value==nptr){
- printf("warning: unable to read server jitter response.\n");
- status = max_state_alt(status, STATE_UNKNOWN);
- } else {
- if(verbose) printf("%g\n", *jitter);
- }
- }
-
- if(do_stratum) {
- value = NULL;
- /* get the stratum */
- if(verbose) {
- printf("parsing stratum from peer %.2x: ", ntohs(peers[i].assoc));
- }
- value = extract_value(req.data, "stratum");
- if(value == NULL){
- printf("warning: unable to read server stratum response.\n");
- status = max_state_alt(status, STATE_UNKNOWN);
- } else {
- *stratum = atoi(value);
- if(verbose) printf("%i\n", *stratum);
- }
- }
- } /* if (PEER_SEL(peers[i].status) >= min_peer_sel) */
- } /* for (i = 0; i < npeers; i++) */
-
- close(conn);
- if(peers!=NULL) free(peers);
-
- return status;
-}
-
-int process_arguments(int argc, char **argv){
- int c;
- int option=0;
- static struct option longopts[] = {
- {"version", no_argument, 0, 'V'},
- {"help", no_argument, 0, 'h'},
- {"verbose", no_argument, 0, 'v'},
- {"use-ipv4", no_argument, 0, '4'},
- {"use-ipv6", no_argument, 0, '6'},
- {"warning", required_argument, 0, 'w'},
- {"critical", required_argument, 0, 'c'},
- {"swarn", required_argument, 0, 'W'},
- {"scrit", required_argument, 0, 'C'},
- {"jwarn", required_argument, 0, 'j'},
- {"jcrit", required_argument, 0, 'k'},
- {"timeout", required_argument, 0, 't'},
- {"hostname", required_argument, 0, 'H'},
- {0, 0, 0, 0}
- };
-
-
- if (argc < 2)
- usage ("\n");
-
- while (1) {
- c = getopt_long (argc, argv, "Vhv46w:c:W:C:j:k:t:H:", longopts, &option);
- if (c == -1 || c == EOF || c == 1)
- break;
-
- switch (c) {
- case 'h':
- print_help();
- exit(STATE_OK);
- break;
- case 'V':
- print_revision(progname, revision);
- exit(STATE_OK);
- break;
- case 'v':
- verbose++;
- break;
- case 'w':
- do_offset=1;
- owarn = optarg;
- break;
- case 'c':
- do_offset=1;
- ocrit = optarg;
- break;
- case 'W':
- do_stratum=1;
- swarn = optarg;
- break;
- case 'C':
- do_stratum=1;
- scrit = optarg;
- break;
- case 'j':
- do_jitter=1;
- jwarn = optarg;
- break;
- case 'k':
- do_jitter=1;
- jcrit = optarg;
- break;
- case 'H':
- if(is_host(optarg) == FALSE)
- usage2(_("Invalid hostname/address"), optarg);
- server_address = strdup(optarg);
- break;
- case 't':
- socket_timeout=atoi(optarg);
- break;
- case '4':
- address_family = AF_INET;
- break;
- case '6':
-#ifdef USE_IPV6
- address_family = AF_INET6;
-#else
- usage4 (_("IPv6 support not available"));
-#endif
- break;
- case '?':
- /* print short usage statement if args not parsable */
- usage5 ();
- break;
- }
- }
-
- if(server_address == NULL){
- usage4(_("Hostname was not supplied"));
- }
-
- return 0;
-}
-
-char *perfd_offset (double offset)
-{
- return fperfdata ("offset", offset, "s",
- TRUE, offset_thresholds->warning->end,
- TRUE, offset_thresholds->critical->end,
- FALSE, 0, FALSE, 0);
-}
-
-char *perfd_jitter (double jitter)
-{
- return fperfdata ("jitter", jitter, "s",
- do_jitter, jitter_thresholds->warning->end,
- do_jitter, jitter_thresholds->critical->end,
- TRUE, 0, FALSE, 0);
-}
-
-char *perfd_stratum (int stratum)
-{
- return perfdata ("stratum", stratum, "",
- do_stratum, (int)stratum_thresholds->warning->end,
- do_stratum, (int)stratum_thresholds->critical->end,
- TRUE, 0, TRUE, 16);
-}
-
-int main(int argc, char *argv[]){
- int result, offset_result, stratum;
- double offset=0, jitter=0;
- char *result_line, *perfdata_line;
-
- result = offset_result = STATE_OK;
-
- if (process_arguments (argc, argv) == ERROR)
- usage4 (_("Could not parse arguments"));
-
- set_thresholds(&offset_thresholds, owarn, ocrit);
- set_thresholds(&jitter_thresholds, jwarn, jcrit);
- set_thresholds(&stratum_thresholds, swarn, scrit);
-
- /* initialize alarm signal handling */
- signal (SIGALRM, socket_timeout_alarm_handler);
-
- /* set socket timeout */
- alarm (socket_timeout);
-
- result = ntp_request(server_address, &offset, &offset_result, &jitter, &stratum);
- result = max_state_alt(result, get_status(fabs(offset), offset_thresholds));
-
- if(do_stratum)
- result = max_state_alt(result, get_status(stratum, stratum_thresholds));
-
- if(do_jitter)
- result = max_state_alt(result, get_status(jitter, jitter_thresholds));
-
- switch (result) {
- case STATE_CRITICAL :
- asprintf(&result_line, "NTP CRITICAL:");
- break;
- case STATE_WARNING :
- asprintf(&result_line, "NTP WARNING:");
- break;
- case STATE_OK :
- asprintf(&result_line, "NTP OK:");
- break;
- default :
- asprintf(&result_line, "NTP UNKNOWN:");
- break;
- }
- if(!syncsource_found)
- asprintf(&result_line, "%s %s, ", result_line, _("Server not synchronized"));
-
- if(offset_result == STATE_UNKNOWN){
- asprintf(&result_line, "%s %s", result_line, _("Offset unknown"));
- asprintf(&perfdata_line, "");
- } else {
- asprintf(&result_line, "%s Offset %.10g secs", result_line, offset);
- asprintf(&perfdata_line, "%s", perfd_offset(offset));
- }
- if (do_jitter) {
- asprintf(&result_line, "%s, jitter=%f", result_line, jitter);
- asprintf(&perfdata_line, "%s %s", perfdata_line, perfd_jitter(jitter));
- }
- if (do_stratum) {
- asprintf(&result_line, "%s, stratum=%i", result_line, stratum);
- asprintf(&perfdata_line, "%s %s", perfdata_line, perfd_stratum(stratum));
- }
- printf("%s|%s\n", result_line, perfdata_line);
-
- if(server_address!=NULL) free(server_address);
- return result;
-}
-
-
-
-void print_help(void){
- print_revision(progname, revision);
-
- printf ("Copyright (c) 2006 Sean Finney\n");
- printf (COPYRIGHT, copyright, email);
-
- printf ("%s\n", _("This plugin checks the selected ntp server"));
-
- printf ("\n\n");
-
- print_usage();
- printf (_(UT_HELP_VRSN));
- printf (_(UT_HOST_PORT), 'p', "123");
- printf (" %s\n", "-w, --warning=THRESHOLD");
- printf (" %s\n", _("Offset to result in warning status (seconds)"));
- printf (" %s\n", "-c, --critical=THRESHOLD");
- printf (" %s\n", _("Offset to result in critical status (seconds)"));
- printf (" %s\n", "-W, --warning=THRESHOLD");
- printf (" %s\n", _("Warning threshold for stratum"));
- printf (" %s\n", "-W, --critical=THRESHOLD");
- printf (" %s\n", _("Critical threshold for stratum"));
- printf (" %s\n", "-j, --warning=THRESHOLD");
- printf (" %s\n", _("Warning threshold for jitter"));
- printf (" %s\n", "-k, --critical=THRESHOLD");
- printf (" %s\n", _("Critical threshold for jitter"));
- printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
- printf (_(UT_VERBOSE));
-
- printf("\n");
- printf("%s\n", _("Notes:"));
- printf(" %s\n", _("See:"));
- printf(" %s\n", ("http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT"));
- printf(" %s\n", _("for THRESHOLD format and examples."));
-
- printf("\n");
- printf("%s\n", _("Examples:"));
- printf(" %s\n", _("Normal offset check:"));
- printf(" %s\n", ("./check_ntp_peer -H ntpserv -w 0.5 -c 1"));
- printf(" %s\n", _("Check jitter too, avoiding critical notifications if jitter isn't available"));
- printf(" %s\n", _("(See Notes above for more details on thresholds formats):"));
- printf(" %s\n", ("./check_ntp_peer -H ntpserv -w 0.5 -c 1 -j -1:100 -k -1:200"));
- printf(" %s\n", _("Check only stratum:"));
- printf(" %s\n", ("./check_ntp_peer -H ntpserv -W 4 -C 6"));
-
- printf (_(UT_SUPPORT));
-}
-
-void
-print_usage(void)
-{
- printf (_("Usage:"));
- printf(" %s -H <host> [-w <warn>] [-c <crit>] [-W <warn>] [-C <crit>]\n", progname);
- printf(" [-j <warn>] [-k <crit>] [-v verbose]\n");
-}
--
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