nut-debian/clients/upsc.c

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2010-03-26 01:20:59 +02:00
/* upsc - simple "client" to test communications
Copyright (C) 1999 Russell Kroll <rkroll@exploits.org>
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Copyright (C) 2012 Arnaud Quette <arnaud.quette@free.fr>
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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 <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include "upsclient.h"
static char *upsname = NULL, *hostname = NULL;
static UPSCONN_t *ups = NULL;
static void usage(const char *prog)
{
printf("Network UPS Tools upsc %s\n\n", UPS_VERSION);
printf("usage: %s -l | -L [<hostname>[:port]]\n", prog);
printf(" %s <ups> [<variable>]\n", prog);
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printf(" %s -c <ups>\n", prog);
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printf("\nDemo program to display UPS variables.\n\n");
printf("First form (lists UPSes):\n");
printf(" -l - lists each UPS on <hostname>, one per line.\n");
printf(" -L - lists each UPS followed by its description (from ups.conf).\n");
printf(" Default hostname: localhost\n");
printf("\nSecond form (lists variables and values):\n");
printf(" <ups> - upsd server, <upsname>[@<hostname>[:<port>]] form\n");
printf(" <variable> - optional, display this variable only.\n");
printf(" Default: list all variables for <host>\n");
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printf("\nThird form (lists clients connected to a device):\n");
printf(" -c - lists each client connected on <ups>, one per line.\n");
printf(" <ups> - upsd server, <upsname>[@<hostname>[:<port>]] form\n");
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}
static void printvar(const char *var)
{
int ret;
unsigned int numq, numa;
const char *query[4];
char **answer;
/* old-style variable name? */
if (!strchr(var, '.')) {
fatalx(EXIT_FAILURE, "Error: old-style variable names are not supported");
}
query[0] = "VAR";
query[1] = upsname;
query[2] = var;
numq = 3;
ret = upscli_get(ups, numq, query, &numa, &answer);
if (ret < 0) {
/* new var and old upsd? try to explain the situation */
if (upscli_upserror(ups) == UPSCLI_ERR_UNKCOMMAND) {
fatalx(EXIT_FAILURE, "Error: variable unknown (old upsd detected)");
}
fatalx(EXIT_FAILURE, "Error: %s", upscli_strerror(ups));
}
if (numa < numq) {
fatalx(EXIT_FAILURE, "Error: insufficient data (got %d args, need at least %d)", numa, numq);
}
printf("%s\n", answer[3]);
}
static void list_vars(void)
{
int ret;
unsigned int numq, numa;
const char *query[4];
char **answer;
query[0] = "VAR";
query[1] = upsname;
numq = 2;
ret = upscli_list_start(ups, numq, query);
if (ret < 0) {
/* check for an old upsd */
if (upscli_upserror(ups) == UPSCLI_ERR_UNKCOMMAND) {
fatalx(EXIT_FAILURE, "Error: upsd is too old to support this query");
}
fatalx(EXIT_FAILURE, "Error: %s", upscli_strerror(ups));
}
while (upscli_list_next(ups, numq, query, &numa, &answer) == 1) {
/* VAR <upsname> <varname> <val> */
if (numa < 4) {
fatalx(EXIT_FAILURE, "Error: insufficient data (got %d args, need at least 4)", numa);
}
printf("%s: %s\n", answer[2], answer[3]);
}
}
static void list_upses(int verbose)
{
int ret;
unsigned int numq, numa;
const char *query[4];
char **answer;
query[0] = "UPS";
numq = 1;
ret = upscli_list_start(ups, numq, query);
if (ret < 0) {
/* check for an old upsd */
if (upscli_upserror(ups) == UPSCLI_ERR_UNKCOMMAND) {
fatalx(EXIT_FAILURE, "Error: upsd is too old to support this query");
}
fatalx(EXIT_FAILURE, "Error: %s", upscli_strerror(ups));
}
while (upscli_list_next(ups, numq, query, &numa, &answer) == 1) {
/* UPS <upsname> <description> */
if (numa < 3) {
fatalx(EXIT_FAILURE, "Error: insufficient data (got %d args, need at least 3)", numa);
}
if(verbose) {
printf("%s: %s\n", answer[1], answer[2]);
} else {
printf("%s\n", answer[1]);
}
}
}
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static void list_clients(const char *devname)
{
int ret;
unsigned int numq, numa;
const char *query[4];
char **answer;
query[0] = "CLIENT";
query[1] = devname;
numq = 2;
ret = upscli_list_start(ups, numq, query);
if (ret < 0) {
/* check for an old upsd */
if (upscli_upserror(ups) == UPSCLI_ERR_UNKCOMMAND) {
fatalx(EXIT_FAILURE, "Error: upsd is too old to support this query");
}
fatalx(EXIT_FAILURE, "Error: %s", upscli_strerror(ups));
}
while ((ret=upscli_list_next(ups, numq, query, &numa, &answer)) == 1) {
/* CLIENT <upsname> <address> */
if (numa < 3) {
fatalx(EXIT_FAILURE, "Error: insufficient data (got %d args, need at least 3)", numa);
}
printf("%s\n", answer[2]);
}
}
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static void clean_exit(void)
{
if (ups) {
upscli_disconnect(ups);
}
free(upsname);
free(hostname);
free(ups);
}
int main(int argc, char **argv)
{
int i, port;
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int varlist = 0, clientlist = 0, verbose = 0;
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const char *prog = xbasename(argv[0]);
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while ((i = getopt(argc, argv, "+hlLcV")) != -1) {
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switch (i)
{
case 'L':
verbose = 1;
case 'l':
varlist = 1;
break;
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case 'c':
clientlist = 1;
break;
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case 'V':
fatalx(EXIT_SUCCESS, "Network UPS Tools upscmd %s", UPS_VERSION);
case 'h':
default:
usage(prog);
exit(EXIT_SUCCESS);
}
}
argc -= optind;
argv += optind;
/* be a good little client that cleans up after itself */
atexit(clean_exit);
if (varlist) {
if (upscli_splitaddr(argv[0] ? argv[0] : "localhost", &hostname, &port) != 0) {
fatalx(EXIT_FAILURE, "Error: invalid hostname.\nRequired format: [hostname[:port]]");
}
} else {
if (upscli_splitname(argv[0], &upsname, &hostname, &port) != 0) {
fatalx(EXIT_FAILURE, "Error: invalid UPS definition.\nRequired format: upsname[@hostname[:port]]");
}
}
ups = xmalloc(sizeof(*ups));
if (upscli_connect(ups, hostname, port, UPSCLI_CONN_TRYSSL) < 0) {
fatalx(EXIT_FAILURE, "Error: %s", upscli_strerror(ups));
}
if (varlist) {
list_upses(verbose);
exit(EXIT_SUCCESS);
}
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if (clientlist) {
list_clients(upsname);
exit(EXIT_SUCCESS);
}
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if (argc > 1) {
printvar(argv[1]);
} else {
list_vars();
}
exit(EXIT_SUCCESS);
}