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/*
* sh(1) ping PMDA
*
* Copyright (c) 1995-2003 Silicon Graphics, Inc. All Rights Reserved.
*
* 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.
*/
#include <ctype.h>
#include "shping.h"
#include "domain.h"
__uint32_t cycletime = 120; /* default cycle time, 2 minutes */
__uint32_t timeout = 20; /* response timeout in seconds */
static char *username; /* user account to run under */
cmd_t *cmdlist;
#ifdef HAVE_SPROC
/* Signals are only used with sproc, threads will never generate SIGGHLD */
void
onchld(int s)
{
int done;
int waitStatus;
int die = 0;
while ((done = waitpid(-1, &waitStatus, WNOHANG)) > 0) {
if (done != sprocpid)
continue;
die = 1;
if (WIFEXITED(waitStatus)) {
if (WEXITSTATUS(waitStatus) == 0)
logmessage(LOG_INFO,
"Sproc (pid=%d) exited normally\n",
done);
else
logmessage(LOG_CRIT,
"Sproc (pid=%d) exited with status = %d\n",
done, WEXITSTATUS(waitStatus));
}
else if (WIFSIGNALED(waitStatus)) {
if (WCOREDUMP(waitStatus))
logmessage(LOG_CRIT,
"Sproc (pid=%d) received signal = %d and dumped core\n",
done, WTERMSIG(waitStatus));
else
logmessage(LOG_CRIT,
"Sproc (pid=%d) received signal = %d\n",
done, WTERMSIG(waitStatus));
}
else {
logmessage(LOG_CRIT,
"Sproc (pid=%d) died, reason unknown\n", done);
}
}
if (die) {
logmessage(LOG_INFO, "Main process exiting\n");
exit(0);
}
}
#endif
void
usage(void)
{
fprintf(stderr,
"Usage: %s [options] configfile\n\n\
Options:\n\
-C parse configuration file and exit\n\
-d domain use domain (numeric) for metrics domain of PMDA\n\
-I interval cycle time in seconds between subsequent executions of each\n\
command [default 120 seconds]\n\
-l logfile write log into logfile rather than using the default log\n\
-t timeout time in seconds before aborting the wait for individual\n\
commands to complete [default 20 seconds]\n\
-U username run the agent and commands as alternate user [default \"pcp\"]\n",
pmProgname);
exit(1);
}
int
main(int argc, char **argv)
{
pmdaInterface dispatch;
int n = 0;
int i;
int err = 0;
int sep = __pmPathSeparator();
int line;
int numcmd = 0;
int parseonly = 0;
char *configfile;
FILE *conf;
char *endnum;
char *p;
char *tag;
char lbuf[256];
char mypath[MAXPATHLEN];
__pmSetProgname(argv[0]);
__pmGetUsername(&username);
snprintf(mypath, sizeof(mypath), "%s%c" "shping" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDaemon(&dispatch, PMDA_INTERFACE_2, pmProgname, SHPING,
"shping.log", mypath);
while ((n = pmdaGetOpt(argc, argv,"CD:d:I:l:t:U:?",
&dispatch, &err)) != EOF) {
switch (n) {
case 'C':
parseonly = 1;
break;
case 'I':
cycletime = (int)strtol(optarg, &endnum, 10);
if (*endnum != '\0') {
fprintf(stderr,
"%s: -I requires number of seconds as argument\n",
pmProgname);
err++;
}
break;
case 't':
timeout = (int)strtol(optarg, &endnum, 10);
if (*endnum != '\0') {
fprintf(stderr,
"%s: -t requires number of seconds as argument\n",
pmProgname);
err++;
}
break;
case 'U':
username = optarg;
break;
case '?':
err++;
}
}
if (err || optind != argc -1) {
usage();
}
configfile = argv[optind];
if ((conf = fopen(configfile, "r")) == NULL) {
fprintf(stderr, "%s: Unable to open config file \"%s\": %s\n",
pmProgname, configfile, osstrerror());
exit(1);
}
line = 0;
for ( ; ; ) {
if (fgets(lbuf, sizeof(lbuf), conf) == NULL)
break;
line++;
p = lbuf;
while (*p && isspace((int)*p))
p++;
if (*p == '\0' || *p == '\n' || *p == '#')
continue;
tag = p++;
while (*p && !isspace((int)*p))
p++;
if (*p)
*p++ = '\0';
while (*p && isspace((int)*p))
p++;
if (*p == '\0' || *p == '\n') {
fprintf(stderr, "[%s:%d] missing command after tag \"%s\"\n",
configfile, line, tag);
exit(1);
}
numcmd++;
if (parseonly)
continue;
if ((cmdlist = (cmd_t *)realloc(cmdlist, numcmd * sizeof(cmd_t))) == NULL) {
__pmNoMem("main:cmdlist", numcmd * sizeof(cmd_t),
PM_FATAL_ERR);
}
cmdlist[numcmd-1].tag = strdup(tag);
cmdlist[numcmd-1].cmd = strdup(p);
cmdlist[numcmd-1].status = STATUS_NOTYET;
cmdlist[numcmd-1].error = 0;
cmdlist[numcmd-1].real = cmdlist[numcmd-1].usr = cmdlist[numcmd-1].sys = -1;
/* trim trailing newline */
p = cmdlist[numcmd-1].cmd;
while (*p && *p != '\n')
p++;
*p = '\0';
}
fclose(conf);
if (numcmd == 0) {
fprintf(stderr, "%s: No commands in config file \"%s\"?\n",
pmProgname, configfile);
exit(1);
}
else if (parseonly)
exit(0);
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL1) {
fprintf(stderr, "Parsed %d commands\n", numcmd);
fprintf(stderr, "Tag\tCommand\n");
for (i = 0; i < numcmd; i++) {
fprintf(stderr, "[%s]\t%s\n", cmdlist[i].tag, cmdlist[i].cmd);
}
}
#endif
/* set up indom description */
indomtab.it_numinst = numcmd;
if ((indomtab.it_set = (pmdaInstid *)malloc(numcmd*sizeof(pmdaInstid))) == NULL) {
__pmNoMem("main.indomtab", numcmd * sizeof(pmdaInstid), PM_FATAL_ERR);
}
for (i = 0; i < numcmd; i++) {
indomtab.it_set[i].i_inst = i;
indomtab.it_set[i].i_name = cmdlist[i].tag;
}
#ifdef HAVE_SPROC
signal(SIGCHLD, onchld);
#endif
pmdaOpenLog(&dispatch);
__pmSetProcessIdentity(username);
shping_init(&dispatch);
pmdaConnect(&dispatch);
pmdaMain(&dispatch);
exit(0);
}
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