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Diffstat (limited to 'plugins/check_apt.c')
| -rw-r--r-- | plugins/check_apt.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/plugins/check_apt.c b/plugins/check_apt.c new file mode 100644 index 00000000..8d020f50 --- /dev/null +++ b/plugins/check_apt.c @@ -0,0 +1,173 @@ +/****************************************************************************** + * 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; +} |