unbound-host.nagios.patch   [plain text]

Index: smallapp/unbound-host.c
===================================================================
--- smallapp/unbound-host.c	(revision 2115)
+++ smallapp/unbound-host.c	(working copy)
@@ -62,9 +62,18 @@
 #include "libunbound/unbound.h"
 #include <ldns/ldns.h>
 
+/** status variable ala nagios */
+#define FINAL_STATUS_OK		0
+#define FINAL_STATUS_WARNING	1
+#define FINAL_STATUS_CRITICAL	2
+#define FINAL_STATUS_UNKNOWN	3
+
 /** verbosity for unbound-host app */
 static int verb = 0;
 
+/** variable to determine final output */
+static int final_status = FINAL_STATUS_UNKNOWN;
+
 /** Give unbound-host usage, and exit (1). */
 static void
 usage()
@@ -93,7 +102,7 @@
 	printf("Version %s\n", PACKAGE_VERSION);
 	printf("BSD licensed, see LICENSE in source package for details.\n");
 	printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
-	exit(1);
+	exit(FINAL_STATUS_UNKNOWN);
 }
 
 /** determine if str is ip4 and put into reverse lookup format */
@@ -138,7 +147,7 @@
 	*res = strdup(buf);
 	if(!*res) {
 		fprintf(stderr, "error: out of memory\n");
-		exit(1);
+		exit(FINAL_STATUS_UNKNOWN);
 	}
 	return 1;
 }
@@ -158,7 +167,7 @@
 	}
 	if(!res) {
 		fprintf(stderr, "error: out of memory\n");
-		exit(1);
+		exit(FINAL_STATUS_UNKNOWN);
 	}
 	return res;
 }
@@ -172,7 +181,7 @@
 		if(r == 0 && strcasecmp(t, "TYPE0") != 0 && 
 			strcmp(t, "") != 0) {
 			fprintf(stderr, "error unknown type %s\n", t);
-			exit(1);
+			exit(FINAL_STATUS_UNKNOWN);
 		}
 		return r;
 	}
@@ -191,7 +200,7 @@
 		if(r == 0 && strcasecmp(c, "CLASS0") != 0 && 
 			strcmp(c, "") != 0) {
 			fprintf(stderr, "error unknown class %s\n", c);
-			exit(1);
+			exit(FINAL_STATUS_UNKNOWN);
 		}
 		return r;
 	}
@@ -207,6 +216,19 @@
 	return "(insecure)";
 }
 
+/** update the final status for the exit code */
+void
+update_final_status(struct ub_result* result)
+{
+	if (final_status == FINAL_STATUS_UNKNOWN || final_status == FINAL_STATUS_OK) {
+		if (result->secure) final_status = FINAL_STATUS_OK;
+		else if (result->bogus) final_status = FINAL_STATUS_CRITICAL;
+		else final_status = FINAL_STATUS_WARNING;
+	}
+	else if (final_status == FINAL_STATUS_WARNING && result->bogus)
+		final_status = FINAL_STATUS_CRITICAL;
+}
+
 /** nice string for type */
 static void
 pretty_type(char* s, size_t len, int t)
@@ -353,7 +375,7 @@
 				} else {
 					fprintf(stderr, "could not parse "
 						"reply packet to ANY query\n");
-					exit(1);
+					exit(FINAL_STATUS_UNKNOWN);
 				}
 				ldns_pkt_free(p);
 
@@ -388,9 +410,10 @@
 	ret = ub_resolve(ctx, q, t, c, &result);
 	if(ret != 0) {
 		fprintf(stderr, "resolve error: %s\n", ub_strerror(ret));
-		exit(1);
+		exit(FINAL_STATUS_UNKNOWN);
 	}
 	pretty_output(q, t, c, result, docname);
+	update_final_status(result);
 	ret = result->nxdomain;
 	ub_resolve_free(result);
 	return ret;
@@ -427,7 +450,7 @@
 {
 	if(r != 0) {
 		fprintf(stderr, "error: %s\n", ub_strerror(r));
-		exit(1);
+		exit(FINAL_STATUS_UNKNOWN);
 	}
 }
 
@@ -448,7 +471,7 @@
 	ctx = ub_ctx_create();
 	if(!ctx) {
 		fprintf(stderr, "error: out of memory\n");
-		exit(1);
+		exit(FINAL_STATUS_UNKNOWN);
 	}
 
 	/* parse the options */
@@ -509,5 +532,5 @@
 		usage();
 
 	lookup(ctx, argv[0], qtype, qclass);
-	return 0;
+	return final_status;
 }