Adding upstream version 2.3.5.upstream/2.3.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 756 insertions, 0 deletions

diff --git a/plugins/check_ntp_peer.c b/plugins/check_ntp_peer.c
new file mode 100644
index 0000000..49cb100
--- /dev/null
+++ b/plugins/check_ntp_peer.c
@@ -0,0 +1,756 @@
+/*****************************************************************************
+* 
+* Monitoring check_ntp_peer plugin
+* 
+* License: GPL
+* Copyright (c) 2006 Sean Finney <seanius@seanius.net>
+* Copyright (c) 2006-2008 Monitoring Plugins Development Team
+* 
+* Description:
+* 
+* This file contains the check_ntp_peer plugin
+* 
+* This plugin checks an NTP server independent of any commandline
+* programs or external libraries.
+* 
+* Use this plugin to check the health of an NTP server. It supports
+* checking the offset with the sync peer, the jitter and stratum. This
+* plugin will not check the clock offset between the local host and NTP
+* server; please use check_ntp_time for that purpose.
+* 
+* 
+* 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 3 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, see <http://www.gnu.org/licenses/>.
+* 
+* 
+*****************************************************************************/
+
+const char *progname = "check_ntp_peer";
+const char *copyright = "2006-2008";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "netutils.h"
+#include "utils.h"
+
+static char *server_address=NULL;
+static int port=123;
+static int verbose=0;
+static int quiet=0;
+static short do_offset=0;
+static char *owarn="60";
+static char *ocrit="120";
+static short do_stratum=0;
+static char *swarn="-1:16";
+static char *scrit="-1:16";
+static short do_jitter=0;
+static char *jwarn="-1:5000";
+static char *jcrit="-1:10000";
+static short do_truechimers=0;
+static char *twarn="0:";
+static char *tcrit="0:";
+static int syncsource_found=0;
+static int li_alarm=0;
+
+int process_arguments (int, char **);
+thresholds *offset_thresholds = NULL;
+thresholds *jitter_thresholds = NULL;
+thresholds *stratum_thresholds = NULL;
+thresholds *truechimer_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 responses */
+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_TRUECHIMER 0x02
+#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)+((ntohs(m.count)%4)?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_SYNCSOURCE){
+				printf(" <-- current sync source");
+			} else if(PEER_SEL(peer[i].status) >= PEER_INCLUDED){
+				printf(" <-- current sync candidate");
+			} else if(PEER_SEL(peer[i].status) >= PEER_TRUECHIMER){
+				printf(" <-- outlyer, but truechimer");
+			}
+			printf("\n");
+		}
+	}
+}
+
+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 */
+}
+
+/* This function does all the actual work; roughly here's what it does
+ * beside setting the offset, jitter and stratum passed as argument:
+ *  - offset can be negative, so if it cannot get the offset, offset_result
+ *    is set to UNKNOWN, otherwise OK.
+ *  - jitter and stratum are set to -1 if they cannot be retrieved so any
+ *    positive value means a success retrieving the value.
+ *  - status is set to WARNING if there's no sync.peer (otherwise OK) and is
+ *    the return value of the function.
+ *  status is pretty much useless as syncsource_found is a global variable
+ *  used later in main to check is the server was synchronized. It works
+ *  so I left it alone */
+int ntp_request(double *offset, int *offset_result, double *jitter, int *stratum, int *num_truechimers){
+	int conn=-1, i, npeers=0, num_candidates=0;
+	double tmp_offset = 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 *data, *value, *nptr;
+	void *tmp;
+
+	status = STATE_OK;
+	*offset_result = STATE_UNKNOWN;
+	*jitter = *stratum = -1;
+	*num_truechimers = 0;
+
+	/* 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, port, &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));
+
+		do {
+			/* Attempt to read the largest size packet possible */
+			req.count=htons(MAX_CM_SIZE);
+			DBG(printf("receiving READSTAT response"))
+			if(read(conn, &req, SIZEOF_NTPCM(req)) == -1)
+				die(STATE_CRITICAL, "NTP CRITICAL: No response from NTP server\n");
+			DBG(print_ntp_control_message(&req));
+			/* discard obviously invalid packets */
+			if (ntohs(req.count) > MAX_CM_SIZE)
+				die(STATE_CRITICAL, "NTP CRITICAL: Invalid packet received from NTP server\n");
+		} while (!(req.op&OP_READSTAT && ntohs(req.seq) == 1));
+
+		if (LI(req.flags) == LI_ALARM) li_alarm = 1;
+		/* 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 latter case 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_TRUECHIMER){
+			(*num_truechimers)++;
+			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 candidate 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");
+	}
+	if(li_alarm){
+		status = STATE_WARNING;
+		if(verbose) printf("warning: LI_ALARM bit is set\n");
+	}
+
+
+	for (i = 0; i < npeers; i++){
+		/* Only query this server if it is the current sync source */
+		/* If there's no sync.peer, query all candidates and use the best one */
+		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));
+			xasprintf(&data, "");
+			do{
+				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 interpretation 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));
+
+				do {
+					req.count = htons(MAX_CM_SIZE);
+					DBG(printf("receiving READVAR response...\n"));
+					read(conn, &req, SIZEOF_NTPCM(req));
+					DBG(print_ntp_control_message(&req));
+				} while (!(req.op&OP_READVAR && ntohs(req.seq) == 2));
+
+				if(!(req.op&REM_ERROR))
+					xasprintf(&data, "%s%s", data, req.data);
+			} while(req.op&REM_MORE);
+
+			if(req.op&REM_ERROR) {
+				if(strstr(getvar, "jitter")) {
+					if(verbose) printf("The command failed. This is usually caused by servers refusing the 'jitter'\nvariable. Restarting with 'dispersion'...\n");
+					getvar = "stratum,offset,dispersion";
+					i--;
+					continue;
+				} else if(strlen(getvar)) {
+					if(verbose) printf("Server didn't like dispersion either; will retrieve everything\n");
+					getvar = "";
+					i--;
+					continue;
+				}
+			}
+
+			if(verbose > 1)
+				printf("Server responded: >>>%s<<<\n", data);
+
+			/* get the offset */
+			if(verbose)
+				printf("parsing offset from peer %.2x: ", ntohs(peers[i].assoc));
+
+			value = np_extract_ntpvar(data, "offset");
+			nptr=NULL;
+			/* Convert the value if we have one */
+			if(value != NULL)
+				tmp_offset = strtod(value, &nptr) / 1000;
+			/* If value is null or no conversion was performed */
+			if(value == NULL || value==nptr) {
+				if(verbose) printf("error: unable to read server offset response.\n");
+			} else {
+				if(verbose) printf("%.10g\n", tmp_offset);
+				if(*offset_result == STATE_UNKNOWN || fabs(tmp_offset) < fabs(*offset)) {
+					*offset = tmp_offset;
+					*offset_result = STATE_OK;
+				} else {
+					/* Skip this one; move to the next */
+					continue;
+				}
+			}
+
+			if(do_jitter) {
+				/* get the jitter */
+				if(verbose) {
+					printf("parsing %s from peer %.2x: ", strstr(getvar, "dispersion") != NULL ? "dispersion" : "jitter", ntohs(peers[i].assoc));
+				}
+				value = np_extract_ntpvar(data, strstr(getvar, "dispersion") != NULL ? "dispersion" : "jitter");
+				nptr=NULL;
+				/* 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) {
+					if(verbose) printf("error: unable to read server jitter/dispersion response.\n");
+					*jitter = -1;
+				} else if(verbose) {
+					printf("%.10g\n", *jitter);
+				}
+			}
+
+			if(do_stratum) {
+				/* get the stratum */
+				if(verbose) {
+					printf("parsing stratum from peer %.2x: ", ntohs(peers[i].assoc));
+				}
+				value = np_extract_ntpvar(data, "stratum");
+				nptr=NULL;
+				/* Convert the value if we have one */
+				if(value != NULL)
+					*stratum = strtol(value, &nptr, 10);
+				if(value == NULL || value==nptr) {
+					if(verbose) printf("error: unable to read server stratum response.\n");
+					*stratum = -1;
+				} else {
+					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'},
+		{"quiet", no_argument, 0, 'q'},
+		{"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'},
+		{"twarn", required_argument, 0, 'm'},
+		{"tcrit", required_argument, 0, 'n'},
+		{"timeout", required_argument, 0, 't'},
+		{"hostname", required_argument, 0, 'H'},
+		{"port", required_argument, 0, 'p'},
+		{0, 0, 0, 0}
+	};
+
+
+	if (argc < 2)
+		usage ("\n");
+
+	while (1) {
+		c = getopt_long (argc, argv, "Vhv46qw:c:W:C:j:k:m:n:t:H:p:", longopts, &option);
+		if (c == -1 || c == EOF || c == 1)
+			break;
+
+		switch (c) {
+		case 'h':
+			print_help();
+			exit(STATE_UNKNOWN);
+			break;
+		case 'V':
+			print_revision(progname, NP_VERSION);
+			exit(STATE_UNKNOWN);
+			break;
+		case 'v':
+			verbose++;
+			break;
+		case 'q':
+			quiet = 1;
+			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 'm':
+			do_truechimers=1;
+			twarn = optarg;
+			break;
+		case 'n':
+			do_truechimers=1;
+			tcrit = optarg;
+			break;
+		case 'H':
+			if(is_host(optarg) == FALSE)
+				usage2(_("Invalid hostname/address"), optarg);
+			server_address = strdup(optarg);
+			break;
+		case 'p':
+			port=atoi(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, "",
+		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);
+}
+
+char *perfd_truechimers (int num_truechimers)
+{
+	return perfdata ("truechimers", num_truechimers, "",
+		do_truechimers, (int)truechimer_thresholds->warning->end,
+		do_truechimers, (int)truechimer_thresholds->critical->end,
+		TRUE, 0, FALSE, 0);
+}
+
+int main(int argc, char *argv[]){
+	int result, offset_result, stratum, num_truechimers, oresult, jresult, sresult, tresult;
+	double offset=0, jitter=0;
+	char *result_line, *perfdata_line;
+
+	setlocale (LC_ALL, "");
+	bindtextdomain (PACKAGE, LOCALEDIR);
+	textdomain (PACKAGE);
+
+	/* Parse extra opts if any */
+	argv=np_extra_opts (&argc, argv, progname);
+
+	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);
+	set_thresholds(&truechimer_thresholds, twarn, tcrit);
+
+	/* initialize alarm signal handling */
+	signal (SIGALRM, socket_timeout_alarm_handler);
+
+	/* set socket timeout */
+	alarm (socket_timeout);
+
+	/* This returns either OK or WARNING (See comment preceding ntp_request) */
+	result = ntp_request(&offset, &offset_result, &jitter, &stratum, &num_truechimers);
+
+	if(offset_result == STATE_UNKNOWN) {
+		/* if there's no sync peer (this overrides ntp_request output): */
+		result = (quiet == 1 ? STATE_UNKNOWN : STATE_CRITICAL);
+	} else {
+		/* Be quiet if there's no candidates either */
+		if (quiet == 1 && result == STATE_WARNING)
+			result = STATE_UNKNOWN;
+		result = max_state_alt(result, get_status(fabs(offset), offset_thresholds));
+	}
+	oresult = result;
+	
+	if(do_truechimers) {
+		tresult = get_status(num_truechimers, truechimer_thresholds);
+		result = max_state_alt(result, tresult);
+	}
+
+	if(do_stratum) {
+		sresult = get_status(stratum, stratum_thresholds);
+		result = max_state_alt(result, sresult);
+	}
+
+	if(do_jitter) {
+		jresult = get_status(jitter, jitter_thresholds);
+		result = max_state_alt(result, jresult);
+	}
+
+	switch (result) {
+		case STATE_CRITICAL :
+			xasprintf(&result_line, _("NTP CRITICAL:"));
+			break;
+		case STATE_WARNING :
+			xasprintf(&result_line, _("NTP WARNING:"));
+			break;
+		case STATE_OK :
+			xasprintf(&result_line, _("NTP OK:"));
+			break;
+		default :
+			xasprintf(&result_line, _("NTP UNKNOWN:"));
+			break;
+	}
+	if(!syncsource_found)
+		xasprintf(&result_line, "%s %s,", result_line, _("Server not synchronized"));
+	else if(li_alarm)
+		xasprintf(&result_line, "%s %s,", result_line, _("Server has the LI_ALARM bit set"));
+
+	if(offset_result == STATE_UNKNOWN){
+		xasprintf(&result_line, "%s %s", result_line, _("Offset unknown"));
+		xasprintf(&perfdata_line, "");
+	} else if (oresult == STATE_WARNING) {
+		xasprintf(&result_line, "%s %s %.10g secs (WARNING)", result_line, _("Offset"), offset);
+	} else if (oresult == STATE_CRITICAL) {
+		xasprintf(&result_line, "%s %s %.10g secs (CRITICAL)", result_line, _("Offset"), offset);
+	} else {
+		xasprintf(&result_line, "%s %s %.10g secs", result_line, _("Offset"), offset);
+	}	
+	xasprintf(&perfdata_line, "%s", perfd_offset(offset));
+	
+	if (do_jitter) {
+		if (jresult == STATE_WARNING) {
+			xasprintf(&result_line, "%s, jitter=%f (WARNING)", result_line, jitter);
+		} else if (jresult == STATE_CRITICAL) {
+			xasprintf(&result_line, "%s, jitter=%f (CRITICAL)", result_line, jitter);
+		} else {
+			xasprintf(&result_line, "%s, jitter=%f", result_line, jitter);
+		}
+		xasprintf(&perfdata_line, "%s %s", perfdata_line, perfd_jitter(jitter));
+	}
+	if (do_stratum) {
+		if (sresult == STATE_WARNING) {
+			xasprintf(&result_line, "%s, stratum=%i (WARNING)", result_line, stratum);
+		} else if (sresult == STATE_CRITICAL) {
+			xasprintf(&result_line, "%s, stratum=%i (CRITICAL)", result_line, stratum);
+		} else {
+			xasprintf(&result_line, "%s, stratum=%i", result_line, stratum);
+		}
+		xasprintf(&perfdata_line, "%s %s", perfdata_line, perfd_stratum(stratum));
+	}
+	if (do_truechimers) {
+		if (tresult == STATE_WARNING) {
+			xasprintf(&result_line, "%s, truechimers=%i (WARNING)", result_line, num_truechimers);
+		} else if (tresult == STATE_CRITICAL) {
+			xasprintf(&result_line, "%s, truechimers=%i (CRITICAL)", result_line, num_truechimers);
+		} else {
+			xasprintf(&result_line, "%s, truechimers=%i", result_line, num_truechimers);
+		}
+		xasprintf(&perfdata_line, "%s %s", perfdata_line, perfd_truechimers(num_truechimers));
+	}
+	printf("%s|%s\n", result_line, perfdata_line);
+
+	if(server_address!=NULL) free(server_address);
+	return result;
+}
+
+void print_help(void){
+	print_revision(progname, NP_VERSION);
+
+	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_EXTRA_OPTS);
+	printf (UT_IPv46);
+	printf (UT_HOST_PORT, 'p', "123");
+	printf (" %s\n", "-q, --quiet");
+	printf ("    %s\n", _("Returns UNKNOWN instead of CRITICAL or WARNING if server isn't synchronized"));
+	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, --swarn=THRESHOLD");
+	printf ("    %s\n", _("Warning threshold for stratum of server's synchronization peer"));
+	printf (" %s\n", "-C, --scrit=THRESHOLD");
+	printf ("    %s\n", _("Critical threshold for stratum of server's synchronization peer"));
+	printf (" %s\n", "-j, --jwarn=THRESHOLD");
+	printf ("    %s\n", _("Warning threshold for jitter"));
+	printf (" %s\n", "-k, --jcrit=THRESHOLD");
+	printf ("    %s\n", _("Critical threshold for jitter"));
+	printf (" %s\n", "-m, --twarn=THRESHOLD");
+	printf ("    %s\n", _("Warning threshold for number of usable time sources (\"truechimers\")"));
+	printf (" %s\n", "-n, --tcrit=THRESHOLD");
+	printf ("    %s\n", _("Critical threshold for number of usable time sources (\"truechimers\")"));
+	printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
+	printf (UT_VERBOSE);
+
+	printf("\n");
+	printf("%s\n", _("This plugin checks an NTP server independent of any commandline"));
+	printf("%s\n\n", _("programs or external libraries."));
+
+	printf("%s\n", _("Notes:"));
+	printf(" %s\n", _("Use this plugin to check the health of an NTP server. It supports"));
+	printf(" %s\n", _("checking the offset with the sync peer, the jitter and stratum. This"));
+	printf(" %s\n", _("plugin will not check the clock offset between the local host and NTP"));
+	printf(" %s\n", _("server; please use check_ntp_time for that purpose."));
+	printf("\n");
+	printf(UT_THRESHOLDS_NOTES);
+
+	printf("\n");
+	printf("%s\n", _("Examples:"));
+	printf(" %s\n", _("Simple NTP server check:"));
+	printf("  %s\n", ("./check_ntp_peer -H ntpserv -w 0.5 -c 1"));
+	printf("\n");
+	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("\n");
+	printf(" %s\n", _("Only check the number of usable time sources (\"truechimers\"):"));
+	printf("  %s\n", ("./check_ntp_peer -H ntpserv -m @5 -n @3"));
+	printf("\n");
+	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 ("%s\n", _("Usage:"));
+	printf(" %s -H <host> [-4|-6] [-w <warn>] [-c <crit>] [-W <warn>] [-C <crit>]\n", progname);
+	printf("       [-j <warn>] [-k <crit>] [-v verbose]\n");
+}