X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fsubnet_parse.c;h=32b7e0a09a4de64c1af90dbcc713144fbed75578;hb=252b8f0c9f3851c59f8baec5df95bbb2bbf85e72;hp=d5b84eb647f6fa710e4f3eeb9ab2ced28ded7ae2;hpb=1c475ecb575367a6b3f9328b0f643ad636155341;p=tinc

diff --git a/src/subnet_parse.c b/src/subnet_parse.c
index d5b84eb6..32b7e0a0 100644
--- a/src/subnet_parse.c
+++ b/src/subnet_parse.c
@@ -1,6 +1,6 @@
 /*
     subnet_parse.c -- handle subnet parsing
-    Copyright (C) 2000-2012 Guus Sliepen <guus@tinc-vpn.org>,
+    Copyright (C) 2000-2021 Guus Sliepen <guus@tinc-vpn.org>,
                   2000-2005 Ivo Timmermans
 
     This program is free software; you can redistribute it and/or modify
@@ -87,6 +87,17 @@ void maskcpy(void *va, const void *vb, int masklen, int len) {
 	}
 }
 
+bool subnetcheck(const subnet_t subnet) {
+	if(((subnet.type == SUBNET_IPV4)
+	                && !maskcheck(&subnet.net.ipv4.address, subnet.net.ipv4.prefixlength, sizeof(subnet.net.ipv4.address)))
+	                || ((subnet.type == SUBNET_IPV6)
+	                    && !maskcheck(&subnet.net.ipv6.address, subnet.net.ipv6.prefixlength, sizeof(subnet.net.ipv6.address)))) {
+		return false;
+	}
+
+	return true;
+}
+
 bool maskcheck(const void *va, int masklen, int len) {
 	int i;
 	const char *a = va;