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/*
* Copyright (c) 1995-2000 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.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <ctype.h>
#include <signal.h>
#include "cisco.h"
#if defined(HAVE_SYS_RESOURCE_H)
#include <sys/resource.h>
#endif
#if defined(HAVE_SYS_WAIT_H)
#include <sys/wait.h>
#endif
#if defined(HAVE_PTHREAD_H)
#include <pthread.h>
#endif
#if defined(HAVE_PRCTL_H)
#include <sys/prctl.h>
#endif
extern int refreshdelay;
#ifdef HAVE_SPROC
static pid_t sproc_pid = 0;
#elif defined (HAVE_PTHREAD_H)
#include <pthread.h>
static pthread_t sproc_pid;
#else
#error "Need sproc or pthreads here!"
#endif
/*
* all metrics supported in this PMD - one table entry for each
*/
static pmdaMetric metrictab[] = {
/* 0,0 ... for direct map, sigh */
{ NULL, { PMDA_PMID(0,0), 0, 0, 0, PMDA_PMUNITS(0,0,0,0,0,0) } },
/* bytes-in */
{ NULL, { PMDA_PMID(0,1), PM_TYPE_U64, CISCO_INDOM, PM_SEM_COUNTER,
PMDA_PMUNITS(1,0,0,PM_SPACE_BYTE,0,0) } },
/* bytes-out */
{ NULL, { PMDA_PMID(0,2), PM_TYPE_U64, CISCO_INDOM, PM_SEM_COUNTER,
PMDA_PMUNITS(1,0,0,PM_SPACE_BYTE,0,0) } },
/* rate-in */
{ NULL, { PMDA_PMID(0,3), PM_TYPE_U32, CISCO_INDOM, PM_SEM_INSTANT,
PMDA_PMUNITS(1,-1,0,PM_SPACE_BYTE,PM_TIME_SEC,0) } },
/* rate-out */
{ NULL, { PMDA_PMID(0,4), PM_TYPE_U32, CISCO_INDOM, PM_SEM_INSTANT,
PMDA_PMUNITS(1,-1,0,PM_SPACE_BYTE,PM_TIME_SEC,0) } },
/* bandwidth */
{ NULL, { PMDA_PMID(0,5), PM_TYPE_U32, CISCO_INDOM, PM_SEM_DISCRETE,
PMDA_PMUNITS(1,-1,0,PM_SPACE_BYTE,PM_TIME_SEC,0) } },
/* bytes_out_bcast */
{ NULL, { PMDA_PMID(0,6), PM_TYPE_U64, CISCO_INDOM, PM_SEM_COUNTER,
PMDA_PMUNITS(1,0,0,PM_SPACE_BYTE,0,0) } },
};
/* filled in from command line args in main() ... */
pmdaIndom indomtab[] = {
{ 0, 0, 0 },
};
#ifdef HAVE_SPROC
static RETSIGTYPE
onhup(int s)
{
signal(SIGHUP, onhup);
exit(0);
}
#endif
/*
* the sproc starts here to refresh the metric values periodically
*/
void
refresh(void *dummy)
{
int i;
#ifdef HAVE_SPROC
#if HAVE_PRCTL
signal(SIGHUP, onhup);
#if HAVE_PR_TERMCHILD
prctl(PR_TERMCHILD); /* SIGHUP when the parent dies */
#elif HAVE_PR_SET_PDEATHSIG
prctl(PR_SET_PDEATHSIG, SIGHUP);
#endif
#endif
#endif
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL0) {
fprintf(stderr, "Starting sproc ...\n");
for (i = 0; i < n_cisco; i++) {
int j;
fprintf(stderr, "cisco[%d] host: %s username: %s passwd: %s prompt: %s intf:",
i, cisco[i].host, cisco[i].username, cisco[i].passwd, cisco[i].prompt);
for (j = 0; j < n_intf; j++) {
if (intf[j].cp == (cisco+i))
fprintf(stderr, " %d-%s", j, intf[j].interface);
}
fputc('\n', stderr);
}
}
#endif
for ( ; ; ) {
for (i = 0; i < n_intf; i++) {
if (grab_cisco(intf+i) != -1) {
intf[i].fetched = 1;
}
else
intf[i].fetched = 0;
}
if (parse_only)
exit(0);
for (i = 0; i < n_cisco; i++) {
if (cisco[i].fout != NULL) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL0)
fprintf(stderr, "... %s voluntary disconnect fout=%d\n", cisco[i].host, fileno(cisco[i].fout));
#endif
/* close CISCO telnet session */
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL1) {
fprintf(stderr, "Send: exit\n");
}
#endif
fprintf(cisco[i].fout, "exit\n");
fclose(cisco[i].fout);
cisco[i].fout = NULL;
}
if (cisco[i].fin != NULL) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_APPL0)
fprintf(stderr, "... %s close fin=%d\n", cisco[i].host, fileno(cisco[i].fin));
#endif
fclose(cisco[i].fin);
cisco[i].fin = NULL;
}
}
sleep(refreshdelay);
}
}
static int
cisco_fetchCallBack(pmdaMetric *mdesc, unsigned int inst, pmAtomValue *avp)
{
__pmID_int *idp = (__pmID_int *)&(mdesc->m_desc.pmid);
#ifndef HAVE_SPROC
/* Check is refresh thread is still with us */
int err;
if ( (err = pthread_kill (sproc_pid, 0)) != 0 ) {
exit (1);
}
#endif
if (!intf[inst].fetched)
return PM_ERR_AGAIN;
switch (idp->item) {
case 1: /* bytes_in */
if (intf[inst].bytes_in == -1) return 0;
avp->ull = intf[inst].bytes_in;
break;
case 2: /* bytes_out */
if (intf[inst].bytes_out == -1) return 0;
avp->ull = intf[inst].bytes_out;
break;
case 3: /* rate_in */
if (intf[inst].rate_in == -1) return 0;
avp->ul = intf[inst].rate_in;
break;
case 4: /* rate_out */
if (intf[inst].rate_out == -1) return 0;
avp->ul = intf[inst].rate_out;
break;
case 5: /* bandwidth */
if (intf[inst].bandwidth == -1) return 0;
avp->ul = intf[inst].bandwidth;
break;
case 6: /* bytes_out_bcast */
if (intf[inst].bytes_out_bcast == -1) return 0;
avp->ull = intf[inst].bytes_out_bcast;
break;
default:
return PM_ERR_PMID;
}
return 1;
}
void
cisco_init(pmdaInterface *dp)
{
int i;
pmdaSetFetchCallBack(dp, cisco_fetchCallBack);
pmdaInit(dp, indomtab, sizeof(indomtab)/sizeof(indomtab[0]), metrictab,
sizeof(metrictab)/sizeof(metrictab[0]));
for (i = 0; i < n_intf; i++)
intf[i].fetched = 0;
/* start the sproc for async fetches */
#ifdef HAVE_SPROC
i = sproc_pid = sproc(refresh, PR_SADDR);
#elif defined (HAVE_PTHREAD_H)
i = pthread_create(&sproc_pid, NULL, (void (*))refresh, NULL);
#else
#error "Need sproc or pthread here!"
#endif
if (i < 0)
dp->status = i;
else
dp->status = 0;
}
void
cisco_done(void)
{
int i;
if (sproc_pid > 0) {
#ifndef HAVE_SPROC
pthread_kill(sproc_pid, SIGHUP);
#else
kill(sproc_pid, SIGHUP);
#endif
while (wait(&i) >= 0)
;
}
}
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