Adding packages-warning option to check_apt plugin

plugins/check_apt.c

@@ -80,6 +80,8 @@ static char *do_include = NULL;  /* regexp to only include certain packages */
 static char *do_exclude = NULL;  /* regexp to only exclude certain packages */
 static char *do_critical = NULL;  /* regexp specifying critical packages */
 static char *input_filename = NULL; /* input filename for testing */
+/* number of packages available for upgrade to return WARNING status */
+static int packages_warning = 1;
 
 /* other global variables */
 static int stderr_warning = 0;   /* if a cmd issued output on stderr */
@@ -110,7 +112,7 @@ int main (int argc, char **argv) {
 
 	if(sec_count > 0){
 		result = max_state(result, STATE_CRITICAL);
-	} else if(packages_available > 0){
+	} else if(packages_available >= packages_warning){
 		result = max_state(result, STATE_WARNING);
 	} else if(result > STATE_UNKNOWN){
 		result = STATE_UNKNOWN;
@@ -149,11 +151,12 @@ int process_arguments (int argc, char **argv) {
 		{"exclude", required_argument, 0, 'e'},
 		{"critical", required_argument, 0, 'c'},
 		{"input-file", required_argument, 0, INPUT_FILE_OPT},
+		{"packages-warning", required_argument, 0, 'w'},
 		{0, 0, 0, 0}
 	};
 
 	while(1) {
-		c = getopt_long(argc, argv, "hVvt:u::U::d::ni:e:c:", longopts, NULL);
+		c = getopt_long(argc, argv, "hVvt:u::U::d::ni:e:c:w:", longopts, NULL);
 
 		if(c == -1 || c == EOF || c == 1) break;
 
@@ -206,6 +209,9 @@ int process_arguments (int argc, char **argv) {
 		case INPUT_FILE_OPT:
 			input_filename = optarg;
 			break;
+		case 'w':
+			packages_warning = atoi(optarg);
+			break;
 		default:
 			/* print short usage statement if args not parsable */
 			usage5();
@@ -463,7 +469,10 @@ print_help (void)
   printf ("    %s\n", _("upgrades for Debian and Ubuntu:"));
   printf ("    \t\%s\n", SECURITY_RE);
   printf ("    %s\n", _("Note that the package must first match the include list before its"));
-  printf ("    %s\n\n", _("information is compared against the critical list."));
+  printf ("    %s\n", _("information is compared against the critical list."));
+  printf (" %s\n", "-w, --packages-warning=INTEGER");
+  printf ("    %s\n", _("Minumum number of packages available for upgrade to return WARNING status."));
+  printf ("    %s\n\n", _("Default is 1 package."));
 
   printf ("%s\n\n", _("The following options require root privileges and should be used with care:"));
   printf (" %s\n", "-u, --update=OPTS");
@@ -481,5 +490,5 @@ void
 print_usage(void)
 {
   printf ("%s\n", _("Usage:"));
-  printf ("%s [[-d|-u|-U]opts] [-n] [-t timeout]\n", progname);
+  printf ("%s [[-d|-u|-U]opts] [-n] [-l] [-t timeout] [-w packages-warning]\n", progname);
 }