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upsmon.c
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upsmon.c
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/* upsmon - monitor power status over the 'net (talks to upsd via TCP)
Copyright (C)
1998 Russell Kroll <rkroll@exploits.org>
2012 Arnaud Quette <arnaud.quette.free.fr>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "common.h"
#include <sys/stat.h>
#ifndef WIN32
#include <sys/wait.h>
#include <sys/socket.h>
#else
#include <wincompat.h>
#endif
#include "upsclient.h"
#include "upsmon.h"
#include "parseconf.h"
#include "timehead.h"
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#endif
static char *shutdowncmd = NULL, *notifycmd = NULL;
static char *powerdownflag = NULL, *configfile = NULL;
static int minsupplies = 1, sleepval = 5, deadtime = 15;
/* default polling interval = 5 sec */
static int pollfreq = 5, pollfreqalert = 5;
/* slave hosts are given 15 sec by default to logout from upsd */
static int hostsync = 15;
/* sum of all power values from config file */
static int totalpv = 0;
/* default replace battery warning interval (seconds) */
static int rbwarntime = 43200;
/* default "all communications down" warning interval (seconds) */
static int nocommwarntime = 300;
/* default interval between the shutdown warning and the shutdown */
static int finaldelay = 5;
/* set by SIGHUP handler, cleared after reload finishes */
static int reload_flag = 0;
/* set after SIGINT, SIGQUIT, or SIGTERM */
static int exit_flag = 0;
/* userid for unprivileged process when using fork mode */
static char *run_as_user = NULL;
/* SSL details - where to find certs, whether to use them */
static char *certpath = NULL;
static char *certname = NULL;
static char *certpasswd = NULL;
static int certverify = 0; /* don't verify by default */
static int forcessl = 0; /* don't require ssl by default */
static int userfsd = 0, pipefd[2];
#ifndef WIN32
static int use_pipe = 1;
#else
/* Do not fork in WIN32 */
static int use_pipe = 0;
static HANDLE mutex = INVALID_HANDLE_VALUE;
#endif
static utype_t *firstups = NULL;
static int opt_af = AF_UNSPEC;
#ifndef WIN32
/* signal handling things */
static struct sigaction sa;
static sigset_t nut_upsmon_sigmask;
#endif
static void setflag(int *val, int flag)
{
*val |= flag;
}
static void clearflag(int *val, int flag)
{
*val ^= (*val & flag);
}
static int flag_isset(int num, int flag)
{
return ((num & flag) == flag);
}
static void wall(const char *text)
{
#ifndef WIN32
FILE *wf;
wf = popen("wall", "w");
if (!wf) {
upslog_with_errno(LOG_NOTICE, "Can't invoke wall");
return;
}
fprintf(wf, "%s\n", text);
pclose(wf);
#else
#define MESSAGE_CMD "message.exe"
char * command;
/* first +1 is for the space between message and text
second +1 is for trailing 0
+2 is for "" */
command = malloc (strlen(MESSAGE_CMD) + 1 + 2 + strlen(text) + 1);
if( command == NULL ) {
upslog_with_errno(LOG_NOTICE, "Not enough memory for wall");
return;
}
sprintf(command,"%s \"%s\"",MESSAGE_CMD,text);
if ( system(command) != 0 ) {
upslog_with_errno(LOG_NOTICE, "Can't invoke wall");
}
free(command);
#endif
}
#ifdef WIN32
typedef struct async_notify_s {
char *notice;
int flags;
char *ntype;
char *upsname;
char *date; } async_notify_t;
static unsigned __stdcall async_notify(LPVOID param)
{
char exec[LARGEBUF];
char notice[LARGEBUF];
/* the following code is a copy of the content of the NOT WIN32 part of
"notify" function below */
async_notify_t *data = (async_notify_t *)param;
if (flag_isset(data->flags, NOTIFY_WALL)) {
snprintf(notice,LARGEBUF,"%s: %s", data->date, data->notice);
wall(notice);
}
if (flag_isset(data->flags, NOTIFY_EXEC)) {
if (notifycmd != NULL) {
snprintf(exec, sizeof(exec), "%s \"%s\"", notifycmd, data->notice);
if (data->upsname)
setenv("UPSNAME", data->upsname, 1);
else
setenv("UPSNAME", "", 1);
setenv("NOTIFYTYPE", data->ntype, 1);
if (system(exec) == -1) {
upslog_with_errno(LOG_ERR, "%s", __func__);
}
}
}
free(data->notice);
free(data->ntype);
free(data->upsname);
free(data->date);
free(data);
return 1;
}
#endif
static void notify(const char *notice, int flags, const char *ntype,
const char *upsname)
{
#ifndef WIN32
char exec[LARGEBUF];
int ret;
#endif
if (flag_isset(flags, NOTIFY_IGNORE))
return;
if (flag_isset(flags, NOTIFY_SYSLOG))
upslogx(LOG_NOTICE, "%s", notice);
#ifndef WIN32
/* fork here so upsmon doesn't get wedged if the notifier is slow */
ret = fork();
if (ret < 0) {
upslog_with_errno(LOG_ERR, "Can't fork to notify");
return;
}
if (ret != 0) /* parent */
return;
/* child continues and does all the work */
if (flag_isset(flags, NOTIFY_WALL))
wall(notice);
if (flag_isset(flags, NOTIFY_EXEC)) {
if (notifycmd != NULL) {
snprintf(exec, sizeof(exec), "%s \"%s\"", notifycmd, notice);
if (upsname)
setenv("UPSNAME", upsname, 1);
else
setenv("UPSNAME", "", 1);
setenv("NOTIFYTYPE", ntype, 1);
if (system(exec) == -1) {
upslog_with_errno(LOG_ERR, "%s", __func__);
}
}
}
exit(EXIT_SUCCESS);
#else
async_notify_t * data;
time_t t;
data = malloc(sizeof(async_notify_t));
data->notice = strdup(notice);
data->flags = flags;
data->ntype = strdup(ntype);
data->upsname = strdup(upsname);
t = time(NULL);
data->date = strdup(ctime(&t));
_beginthreadex(
NULL, /* security FIXME */
0, /* stack size */
async_notify,
(void *)data,
0, /* Creation flags */
NULL /* thread id */
);
#endif
}
static void do_notify(const utype_t *ups, int ntype)
{
int i;
char msg[SMALLBUF], *upsname = NULL;
/* grab this for later */
if (ups)
upsname = ups->sys;
for (i = 0; notifylist[i].name != NULL; i++) {
if (notifylist[i].type == ntype) {
upsdebugx(2, "%s: ntype 0x%04x (%s)", __func__, ntype,
notifylist[i].name);
snprintf(msg, sizeof(msg), notifylist[i].msg ? notifylist[i].msg : notifylist[i].stockmsg,
ups ? ups->sys : "");
notify(msg, notifylist[i].flags, notifylist[i].name,
upsname);
return;
}
}
/* not found ?! */
}
/* check for master permissions on the server for this ups */
static int checkmaster(utype_t *ups)
{
char buf[SMALLBUF];
/* don't bother if we're not configured as a master for this ups */
if (!flag_isset(ups->status, ST_MASTER))
return 1;
/* this shouldn't happen (LOGIN checks it earlier) */
if ((ups->upsname == NULL) || (strlen(ups->upsname) == 0)) {
upslogx(LOG_ERR, "Set master on UPS [%s] failed: empty upsname",
ups->sys);
return 0;
}
snprintf(buf, sizeof(buf), "MASTER %s\n", ups->upsname);
if (upscli_sendline(&ups->conn, buf, strlen(buf)) < 0) {
upslogx(LOG_ALERT, "Can't set master mode on UPS [%s] - %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
if (upscli_readline(&ups->conn, buf, sizeof(buf)) == 0) {
if (!strncmp(buf, "OK", 2))
return 1;
/* not ERR, but not caught by readline either? */
upslogx(LOG_ALERT, "Master privileges unavailable on UPS [%s]",
ups->sys);
upslogx(LOG_ALERT, "Response: [%s]", buf);
}
else { /* something caught by readraw's parsing call */
upslogx(LOG_ALERT, "Master privileges unavailable on UPS [%s]",
ups->sys);
upslogx(LOG_ALERT, "Reason: %s", upscli_strerror(&ups->conn));
}
return 0;
}
/* authenticate to upsd, plus do LOGIN and MASTER if applicable */
static int do_upsd_auth(utype_t *ups)
{
char buf[SMALLBUF];
if (!ups->un) {
upslogx(LOG_ERR, "UPS [%s]: no username defined!", ups->sys);
return 0;
}
snprintf(buf, sizeof(buf), "USERNAME %s\n", ups->un);
if (upscli_sendline(&ups->conn, buf, strlen(buf)) < 0) {
upslogx(LOG_ERR, "Can't set username on [%s]: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
if (upscli_readline(&ups->conn, buf, sizeof(buf)) < 0) {
upslogx(LOG_ERR, "Set username on [%s] failed: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
/* authenticate first */
snprintf(buf, sizeof(buf), "PASSWORD %s\n", ups->pw);
if (upscli_sendline(&ups->conn, buf, strlen(buf)) < 0) {
upslogx(LOG_ERR, "Can't set password on [%s]: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
if (upscli_readline(&ups->conn, buf, sizeof(buf)) < 0) {
upslogx(LOG_ERR, "Set password on [%s] failed: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
/* catch insanity from the server - not ERR and not OK either */
if (strncmp(buf, "OK", 2) != 0) {
upslogx(LOG_ERR, "Set password on [%s] failed - got [%s]",
ups->sys, buf);
return 0;
}
/* we require a upsname now */
if ((ups->upsname == NULL) || (strlen(ups->upsname) == 0)) {
upslogx(LOG_ERR, "Login to UPS [%s] failed: empty upsname",
ups->sys);
return 0;
}
/* password is set, let's login */
snprintf(buf, sizeof(buf), "LOGIN %s\n", ups->upsname);
if (upscli_sendline(&ups->conn, buf, strlen(buf)) < 0) {
upslogx(LOG_ERR, "Login to UPS [%s] failed: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
if (upscli_readline(&ups->conn, buf, sizeof(buf)) < 0) {
upslogx(LOG_ERR, "Can't login to UPS [%s]: %s",
ups->sys, upscli_strerror(&ups->conn));
return 0;
}
/* catch insanity from the server - not ERR and not OK either */
if (strncmp(buf, "OK", 2) != 0) {
upslogx(LOG_ERR, "Login on UPS [%s] failed - got [%s]",
ups->sys, buf);
return 0;
}
/* finally - everything is OK */
upsdebugx(1, "Logged into UPS %s", ups->sys);
setflag(&ups->status, ST_LOGIN);
/* now see if we also need to test master permissions */
return checkmaster(ups);
}
/* set flags and make announcements when a UPS has been checked successfully */
static void ups_is_alive(utype_t *ups)
{
time_t now;
time(&now);
ups->lastpoll = now;
if (ups->commstate == 1) /* already known */
return;
/* only notify for 0->1 transitions (to ignore the first connect) */
if (ups->commstate == 0)
do_notify(ups, NOTIFY_COMMOK);
ups->commstate = 1;
}
/* handle all the notifications for a missing UPS in one place */
static void ups_is_gone(utype_t *ups)
{
time_t now;
/* first time: clear the flag and throw the first notifier */
if (ups->commstate != 0) {
ups->commstate = 0;
/* COMMBAD is the initial loss of communications */
do_notify(ups, NOTIFY_COMMBAD);
return;
}
time(&now);
/* first only act if we're <nocommtime> seconds past the last poll */
if ((now - ups->lastpoll) < nocommwarntime)
return;
/* now only complain if we haven't lately */
if ((now - ups->lastncwarn) > nocommwarntime) {
/* NOCOMM indicates a persistent condition */
do_notify(ups, NOTIFY_NOCOMM);
ups->lastncwarn = now;
}
}
static void ups_on_batt(utype_t *ups)
{
if (flag_isset(ups->status, ST_ONBATT)) { /* no change */
upsdebugx(4, "%s: %s (no change)", __func__, ups->sys);
return;
}
sleepval = pollfreqalert; /* bump up polling frequency */
ups->linestate = 0;
upsdebugx(3, "%s: %s (first time)", __func__, ups->sys);
/* must have changed from OL to OB, so notify */
do_notify(ups, NOTIFY_ONBATT);
setflag(&ups->status, ST_ONBATT);
clearflag(&ups->status, ST_ONLINE);
}
static void ups_on_line(utype_t *ups)
{
if (flag_isset(ups->status, ST_ONLINE)) { /* no change */
upsdebugx(4, "%s: %s (no change)", __func__, ups->sys);
return;
}
sleepval = pollfreq;
upsdebugx(3, "%s: %s (first time)", __func__, ups->sys);
/* ignore the first OL at startup, otherwise send the notifier */
if (ups->linestate != -1)
do_notify(ups, NOTIFY_ONLINE);
ups->linestate = 1;
setflag(&ups->status, ST_ONLINE);
clearflag(&ups->status, ST_ONBATT);
}
/* create the flag file if necessary */
static void set_pdflag(void)
{
FILE *pdf;
if (!powerdownflag)
return;
pdf = fopen(powerdownflag, "w");
if (!pdf) {
upslogx(LOG_ERR, "Failed to create power down flag!");
return;
}
fprintf(pdf, "%s", SDMAGIC);
fclose(pdf);
}
/* the actual shutdown procedure */
static void doshutdown(void)
{
int ret;
/* this should probably go away at some point */
upslogx(LOG_CRIT, "Executing automatic power-fail shutdown");
wall("Executing automatic power-fail shutdown\n");
do_notify(NULL, NOTIFY_SHUTDOWN);
sleep(finaldelay);
/* in the pipe model, we let the parent do this for us */
if (use_pipe) {
char ch;
ch = 1;
ret = write(pipefd[1], &ch, 1);
} else {
/* one process model = we do all the work here */
#ifndef WIN32
if (geteuid() != 0)
upslogx(LOG_WARNING, "Not root, shutdown may fail");
#endif
set_pdflag();
#ifdef WIN32
SC_HANDLE SCManager;
SC_HANDLE Service;
SERVICE_STATUS Status;
SCManager = OpenSCManager(
NULL, /* local computer */
NULL, /* ServiceActive database */
SC_MANAGER_ALL_ACCESS); /* full access rights */
if (NULL == SCManager) {
upslogx(LOG_ERR, "OpenSCManager failed (%d)\n", (int)GetLastError());
}
else {
Service = OpenService(SCManager,SVCNAME,SERVICE_STOP);
if( Service == NULL ) {
upslogx(LOG_ERR,"OpenService failed (%d)\n", (int)GetLastError());
}
else {
ControlService(Service,SERVICE_CONTROL_STOP,&Status);
/* Give time to the service to stop */
Sleep(2000);
}
}
#endif
ret = system(shutdowncmd);
if (ret != 0)
upslogx(LOG_ERR, "Unable to call shutdown command: %s",
shutdowncmd);
}
exit(EXIT_SUCCESS);
}
/* set forced shutdown flag so other upsmons know what's going on here */
static void setfsd(utype_t *ups)
{
char buf[SMALLBUF];
int ret;
/* this shouldn't happen */
if (!ups->upsname) {
upslogx(LOG_ERR, "setfsd: programming error: no UPS name set [%s]",
ups->sys);
return;
}
upsdebugx(2, "Setting FSD on UPS %s", ups->sys);
snprintf(buf, sizeof(buf), "FSD %s\n", ups->upsname);
ret = upscli_sendline(&ups->conn, buf, strlen(buf));
if (ret < 0) {
upslogx(LOG_ERR, "FSD set on UPS %s failed: %s", ups->sys,
upscli_strerror(&ups->conn));
return;
}
ret = upscli_readline(&ups->conn, buf, sizeof(buf));
if (ret < 0) {
upslogx(LOG_ERR, "FSD set on UPS %s failed: %s", ups->sys,
upscli_strerror(&ups->conn));
return;
}
if (!strncmp(buf, "OK", 2))
return;
/* protocol error: upsd said something other than "OK" */
upslogx(LOG_ERR, "FSD set on UPS %s failed: %s", ups->sys, buf);
}
static void set_alarm(void)
{
#ifndef WIN32
alarm(NET_TIMEOUT);
#endif
}
static void clear_alarm(void)
{
#ifndef WIN32
signal(SIGALRM, SIG_IGN);
alarm(0);
#endif
}
static int get_var(utype_t *ups, const char *var, char *buf, size_t bufsize)
{
int ret;
unsigned int numq, numa;
const char *query[4];
char **answer;
/* this shouldn't happen */
if (!ups->upsname) {
upslogx(LOG_ERR, "get_var: programming error: no UPS name set [%s]",
ups->sys);
return -1;
}
numq = 0;
if (!strcmp(var, "numlogins")) {
query[0] = "NUMLOGINS";
query[1] = ups->upsname;
numq = 2;
}
if (!strcmp(var, "status")) {
query[0] = "VAR";
query[1] = ups->upsname;
query[2] = "ups.status";
numq = 3;
}
if (numq == 0) {
upslogx(LOG_ERR, "get_var: programming error: var=%s", var);
return -1;
}
upsdebugx(3, "%s: %s / %s", __func__, ups->sys, var);
ret = upscli_get(&ups->conn, numq, query, &numa, &answer);
if (ret < 0) {
/* detect old upsd */
if (upscli_upserror(&ups->conn) == UPSCLI_ERR_UNKCOMMAND) {
upslogx(LOG_ERR, "UPS [%s]: Too old to monitor",
ups->sys);
return -1;
}
/* some other error */
return -1;
}
if (numa < numq) {
upslogx(LOG_ERR, "%s: Error: insufficient data "
"(got %d args, need at least %d)",
var, numa, numq);
return -1;
}
snprintf(buf, bufsize, "%s", answer[numq]);
return 0;
}
static void slavesync(void)
{
utype_t *ups;
char temp[SMALLBUF];
time_t start, now;
int maxlogins, logins;
time(&start);
for (;;) {
maxlogins = 0;
for (ups = firstups; ups != NULL; ups = ups->next) {
/* only check login count on our master(s) */
if (!flag_isset(ups->status, ST_MASTER))
continue;
set_alarm();
if (get_var(ups, "numlogins", temp, sizeof(temp)) >= 0) {
logins = strtol(temp, (char **)NULL, 10);
if (logins > maxlogins)
maxlogins = logins;
}
clear_alarm();
}
/* if no UPS has more than 1 login (us), then slaves are gone */
if (maxlogins <= 1)
return;
/* after HOSTSYNC seconds, assume slaves are stuck and bail */
time(&now);
if ((now - start) > hostsync) {
upslogx(LOG_INFO, "Host sync timer expired, forcing shutdown");
return;
}
usleep(250000);
}
}
static void forceshutdown(void)
{
utype_t *ups;
int isamaster = 0;
upsdebugx(1, "Shutting down any UPSes in MASTER mode...");
/* set FSD on any "master" UPS entries (forced shutdown in progress) */
for (ups = firstups; ups != NULL; ups = ups->next)
if (flag_isset(ups->status, ST_MASTER)) {
isamaster = 1;
setfsd(ups);
}
/* if we're not a master on anything, we should shut down now */
if (!isamaster)
doshutdown();
/* must be the master now */
upsdebugx(1, "This system is a master... waiting for slave logout...");
/* wait up to HOSTSYNC seconds for slaves to logout */
slavesync();
/* time expired or all the slaves are gone, so shutdown */
doshutdown();
}
static int is_ups_critical(utype_t *ups)
{
time_t now;
/* FSD = the master is forcing a shutdown */
if (flag_isset(ups->status, ST_FSD))
return 1;
/* not OB or not LB = not critical yet */
if ((!flag_isset(ups->status, ST_ONBATT)) ||
(!flag_isset(ups->status, ST_LOWBATT)))
return 0;
/* must be OB+LB now */
/* if we're a master, declare it critical so we set FSD on it */
if (flag_isset(ups->status, ST_MASTER))
return 1;
/* must be a slave now */
/* FSD isn't set, so the master hasn't seen it yet */
time(&now);
/* give the master up to HOSTSYNC seconds before shutting down */
if ((now - ups->lastnoncrit) > hostsync) {
upslogx(LOG_WARNING, "Giving up on the master for UPS [%s]",
ups->sys);
return 1;
}
/* there's still time left */
return 0;
}
/* recalculate the online power value and see if things are still OK */
static void recalc(void)
{
utype_t *ups;
int val_ol = 0;
time_t now;
time(&now);
ups = firstups;
while (ups != NULL) {
/* promote dead UPSes that were last known OB to OB+LB */
if ((now - ups->lastpoll) > deadtime)
if (flag_isset(ups->status, ST_ONBATT)) {
upsdebugx(1, "Promoting dead UPS: %s", ups->sys);
setflag(&ups->status, ST_LOWBATT);
}
/* note: we assume that a UPS that isn't critical must be OK *
* *
* this means a UPS we've never heard from is assumed OL *
* whether this is really the best thing to do is undecided */
/* crit = (FSD) || (OB & LB) > HOSTSYNC seconds */
if (is_ups_critical(ups))
upsdebugx(1, "Critical UPS: %s", ups->sys);
else
val_ol += ups->pv;
ups = ups->next;
}
upsdebugx(3, "Current power value: %d", val_ol);
upsdebugx(3, "Minimum power value: %d", minsupplies);
if (val_ol < minsupplies)
forceshutdown();
}
static void ups_low_batt(utype_t *ups)
{
if (flag_isset(ups->status, ST_LOWBATT)) { /* no change */
upsdebugx(4, "%s: %s (no change)", __func__, ups->sys);
return;
}
upsdebugx(3, "%s: %s (first time)", __func__, ups->sys);
/* must have changed from !LB to LB, so notify */
do_notify(ups, NOTIFY_LOWBATT);
setflag(&ups->status, ST_LOWBATT);
}
static void upsreplbatt(utype_t *ups)
{
time_t now;
time(&now);
if ((now - ups->lastrbwarn) > rbwarntime) {
do_notify(ups, NOTIFY_REPLBATT);
ups->lastrbwarn = now;
}
}
static void ups_fsd(utype_t *ups)
{
if (flag_isset(ups->status, ST_FSD)) { /* no change */
upsdebugx(4, "%s: %s (no change)", __func__, ups->sys);
return;
}
upsdebugx(3, "%s: %s (first time)", __func__, ups->sys);
/* must have changed from !FSD to FSD, so notify */
do_notify(ups, NOTIFY_FSD);
setflag(&ups->status, ST_FSD);
}
/* cleanly close the connection to a given UPS */
static void drop_connection(utype_t *ups)
{
upsdebugx(2, "Dropping connection to UPS [%s]", ups->sys);
ups->commstate = 0;
ups->linestate = 0;
clearflag(&ups->status, ST_LOGIN);
clearflag(&ups->status, ST_CONNECTED);
upscli_disconnect(&ups->conn);
}
/* change some UPS parameters during reloading */
static void redefine_ups(utype_t *ups, int pv, const char *un,
const char *pw, const char *master)
{
ups->retain = 1;
if (ups->pv != pv) {
upslogx(LOG_INFO, "UPS [%s]: redefined power value to %d",
ups->sys, pv);
ups->pv = pv;
}
totalpv += ups->pv;
if (ups->un) {
if (strcmp(ups->un, un) != 0) {
upslogx(LOG_INFO, "UPS [%s]: redefined username",
ups->sys);
free(ups->un);
ups->un = xstrdup(un);
/*
* if not logged in force a reconnection since this
* may have been redefined to make a login work
*/
if (!flag_isset(ups->status, ST_LOGIN)) {
upslogx(LOG_INFO, "UPS [%s]: retrying connection",
ups->sys);
drop_connection(ups);
}
} /* if (strcmp(ups->un, un) != 0) { */
} else {
/* adding a username? (going to new style MONITOR line) */
if (un) {
upslogx(LOG_INFO, "UPS [%s]: defined username",
ups->sys);
ups->un = xstrdup(un);
/* possibly force reconnection - see above */
if (!flag_isset(ups->status, ST_LOGIN)) {
upslogx(LOG_INFO, "UPS [%s]: retrying connection",
ups->sys);
drop_connection(ups);
}
} /* if (un) */
}
/* paranoia */
if (!ups->pw)
ups->pw = xstrdup(""); /* give it a bogus, but non-NULL one */
/* obviously don't put the new password in the syslog... */
if (strcmp(ups->pw, pw) != 0) {
upslogx(LOG_INFO, "UPS [%s]: redefined password", ups->sys);
free(ups->pw);
ups->pw = xstrdup(pw);
/* possibly force reconnection - see above */
if (!flag_isset(ups->status, ST_LOGIN)) {
upslogx(LOG_INFO, "UPS [%s]: retrying connection",
ups->sys);
drop_connection(ups);
}
}
/* slave -> master */
if ((!strcasecmp(master, "master")) && (!flag_isset(ups->status, ST_MASTER))) {
upslogx(LOG_INFO, "UPS [%s]: redefined as master", ups->sys);
setflag(&ups->status, ST_MASTER);
/* reset connection to ensure master mode gets checked */
drop_connection(ups);
return;
}
/* master -> slave */
if ((!strcasecmp(master, "slave")) && (flag_isset(ups->status, ST_MASTER))) {