1 files changed, 79 insertions, 0 deletions
diff --git a/includes/inet.h b/includes/inet.h
new file mode 100644
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+++ b/includes/inet.h
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+/* inet.h
+
+   Portable definitions for internet addresses */
+
+/*
+ * Copyright (c) 2004,2007,2009,2014 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996-2003 by Internet Software Consortium
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ *   Internet Systems Consortium, Inc.
+ *   950 Charter Street
+ *   Redwood City, CA 94063
+ *   <info@isc.org>
+ *   https://www.isc.org/
+ *
+ */
+
+/* An internet address of up to 128 bits. */
+
+struct iaddr {
+	unsigned len;
+	unsigned char iabuf [16];
+};
+
+struct iaddrlist {
+	struct iaddrlist *next;
+	struct iaddr addr;
+};
+
+
+/* struct iaddrmatch - used to compare a host IP against a subnet spec
+ *
+ * There is a space/speed tradeoff here implied by the use of a second
+ * struct iaddr to hold the mask; while using an unsigned (byte!) to
+ * represent the subnet prefix length would be more memory efficient,
+ * it makes run-time mask comparisons more expensive.  Since such
+ * entries are used currently only in restricted circumstances
+ * (wanting to reject a subnet), the decision is in favour of run-time
+ * efficiency.
+ */
+
+struct iaddrmatch {
+	struct iaddr addr;
+	struct iaddr mask;
+};
+
+/* its list ... */
+ 
+struct iaddrmatchlist {
+	struct iaddrmatchlist *next;
+	struct iaddrmatch match;
+};
+
+
+/*
+ * Structure to store information about a CIDR network.
+ */
+
+struct iaddrcidrnet {
+	struct iaddr lo_addr;
+	int bits;
+};
+
+struct iaddrcidrnetlist {
+	struct iaddrcidrnetlist *next;
+	struct iaddrcidrnet cidrnet;
+};
+