Initial revision

1 files changed, 85 insertions, 0 deletions

diff --git a/include/resolv.h b/include/resolv.h
new file mode 100644
index 000000000..53ee2f235
--- /dev/null
+++ b/include/resolv.h
@@ -0,0 +1,85 @@
+/* resolv.h: DNS Resolver
+ *
+ * Copyright (C) 1998  Kenneth Albanowski <kjahds@kjahds.com>,
+ *                     The Silver Hammer Group, Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _RESOLV_H_
+#define _RESOLV_H_
+
+#include <netdb.h>
+#include <netinet/in.h>
+
+struct resolv_header {
+	int id;
+	int qr,opcode,aa,tc,rd,ra,rcode;
+	int qdcount;
+	int ancount;
+	int nscount;
+	int arcount;
+};
+
+struct resolv_question {
+	char * dotted;
+	int qtype;
+	int qclass;
+};
+
+struct resolv_answer {
+	char * dotted;
+	int atype;
+	int aclass;
+	int ttl;
+	int rdlength;
+	unsigned char * rdata;
+	int rdoffset;
+};
+
+int encode_header(struct resolv_header * h, unsigned char * dest, int maxlen);
+int decode_header(unsigned char * data, struct resolv_header * h);
+int encode_dotted(const char * dotted, unsigned char * dest, int maxlen);
+int decode_dotted(const unsigned char * message, int offset, 
+	char * dest, int maxlen);
+int length_dotted(const unsigned char * message, int offset);
+int encode_question(struct resolv_question * q,
+	unsigned char * dest, int maxlen);
+int decode_question(unsigned char * message, int offset,
+	struct resolv_question * q);
+int length_question(unsigned char * message, int offset);
+int encode_answer(struct resolv_answer * a,
+	unsigned char * dest, int maxlen);
+int decode_answer(unsigned char * message, int offset,
+	struct resolv_answer * a);
+char * resolve_name(const char * name, int mailbox);
+
+int encode_packet(struct resolv_header * h,
+	struct resolv_question ** q,
+	struct resolv_question ** an,
+	struct resolv_question ** ns,
+	struct resolv_question ** ar,
+	unsigned char * dest, int maxlen);
+int decode_packet(unsigned char * data, struct resolv_header * h);
+
+int dns_lookup(const char * name, int type, int nscount, const char ** nsip,
+	unsigned char ** outpacket, struct resolv_answer * a);
+
+int resolve_address(const char * address, 
+	int nscount, const char ** nsip, 
+	struct in_addr * in);
+
+int resolve_mailbox(const char * address, 
+	int nscount, const char ** nsip, 
+	struct in_addr * in);
+
+extern int open_nameservers(void);
+extern void close_nameservers(void);
+
+extern struct hostent * gethostbyname(const char * name);
+extern struct hostent * gethostbyaddr(const char * addr, int len, int type);
+
+#endif /*_RESOLV_H_*/