Ensure that we have enough buffer for gethostname and terminate it correctly.

1 files changed, 5 insertions, 5 deletions

diff --git a/if-options.h b/if-options.h
index 95e83dc6..5a8b8aaf 100644
--- a/if-options.h
+++ b/if-options.h
@@ -89,12 +89,12 @@ struct if_options {
 	char **environ;
 	char script[PATH_MAX];
 
-	char hostname[HOSTNAME_MAX_LEN + 1];
+	char hostname[HOSTNAME_MAX_LEN + 2];
 	int fqdn;
-	uint8_t vendorclassid[VENDORCLASSID_MAX_LEN + 1];
-	char clientid[CLIENTID_MAX_LEN + 1];
-	uint8_t userclass[USERCLASS_MAX_LEN + 1];
-	uint8_t vendor[VENDOR_MAX_LEN + 1];
+	uint8_t vendorclassid[VENDORCLASSID_MAX_LEN + 2];
+	char clientid[CLIENTID_MAX_LEN + 2];
+	uint8_t userclass[USERCLASS_MAX_LEN + 2];
+	uint8_t vendor[VENDOR_MAX_LEN + 2];
 
 	size_t blacklist_len;
 	in_addr_t *blacklist;