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/******************************************************************************
* check_apt.c: check for available updates in apt package management systems
* original author: sean finney <seanius@seanius.net>
* (with some common bits stolen from check_nagios.c)
******************************************************************************
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., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
******************************************************************************/
const char *progname = "check_apt";
const char *revision = "$Revision$";
const char *copyright = "2006";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "runcmd.h"
#include "utils.h"
#define APTGET_UPGRADE "/usr/bin/apt-get -o 'Debug::NoLocking=true' -s -qq upgrade"
#define APTGET_DISTUPGRADE "/usr/bin/apt-get -o 'Debug::NoLocking=true' -s -qq dist-upgrade"
#define APTGET_UPDATE "/usr/bin/apt-get update"
int process_arguments(int, char **);
void print_help(void);
void print_usage(void);
int run_upgrade(int *pkgcount);
static int verbose = 0;
int main (int argc, char **argv) {
int result=STATE_UNKNOWN, packages_available=0;
if (process_arguments(argc, argv) == ERROR)
usage_va(_("Could not parse arguments"));
/* Set signal handling and alarm timeout */
if (signal (SIGALRM, timeout_alarm_handler) == SIG_ERR) {
usage_va(_("Cannot catch SIGALRM"));
}
/* handle timeouts gracefully... */
alarm (timeout_interval);
/* apt-get upgrade */
result = run_upgrade(&packages_available);
if(packages_available > 0){
result = STATE_WARNING;
printf("APT WARNING: ");
} else {
result = STATE_OK;
printf("APT OK: ");
}
printf("%d packages available for upgrade\n", packages_available);
return result;
}
/* process command-line arguments */
int process_arguments (int argc, char **argv) {
int c;
static struct option longopts[] = {
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{"verbose", no_argument, 0, 'v'},
{"timeout", required_argument, 0, 't'},
{0, 0, 0, 0}
};
while(1) {
c = getopt_long(argc, argv, "hVvt", longopts, NULL);
if(c == -1 || c == EOF || c == 1) break;
switch(c) {
case 'h': /* help */
print_help();
exit(STATE_OK);
case 'V': /* version */
print_revision(progname, revision);
exit(STATE_OK);
case 'v':
verbose++;
break;
case 't':
timeout_interval=atoi(optarg);
break;
default:
/* print short usage statement if args not parsable */
usage_va(_("Unknown argument - %s"), optarg);
}
}
return OK;
}
/* informative help message */
void print_help(void){
print_revision(progname, revision);
printf(_(COPYRIGHT), copyright, email);
printf(_("\
This plugin checks for software updates on systems that use\n\
package management systems based on the apt-get(8) command\n\
found in Debian GNU/Linux\n\
\n\n"));
print_usage();
printf(_(UT_HELP_VRSN));
printf(_("\
-t, --timeout=INTEGER\n\
Seconds to wait for plugin execution to complete\n\
"));
}
/* simple usage heading */
void print_usage(void){
printf ("Usage: %s [-u] [-t timeout]\n", progname);
}
/* run an apt-get upgrade */
int run_upgrade(int *pkgcount){
int i=0, result=STATE_UNKNOWN, pc=0;
struct output chld_out, chld_err;
/* run the upgrade */
if((result = np_runcmd(APTGET_UPGRADE, &chld_out, &chld_err, 0)) != 0)
result = STATE_WARNING;
/* parse the output, which should only consist of lines like
*
* Inst package ....
* Conf package ....
*
* so we'll filter based on "Inst"
*/
for(i = 0; i < chld_out.lines; i++) {
if(strncmp(chld_out.line[i], "Inst", 4)==0){
if(verbose){
printf("%s\n", chld_out.line[i]);
}
pc++;
}
}
*pkgcount=pc;
/* If we get anything on stderr, at least set warning */
if(chld_err.buflen){
fprintf(stderr, "warning, output detected on stderr\n");
for(i = 0; i < chld_err.lines; i++) {
printf("got this: %s\n", chld_err.line[i]);
result = max_state (result, STATE_WARNING);
}
}
return result;
}
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