--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/whoisd/as.c	Fri Nov 01 09:12:45 2013 +0000
@@ -0,0 +1,234 @@
+/*	$NetBSD: as.c,v 1.2 2008/04/28 20:24:17 martin Exp $	*/
+
+/*
+ * Copyright (c) 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Andrew Brown.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <err.h>
+#include <stdio.h>
+
+#include "as.h"
+
+#define DEFAULT_AS_SERVER "whois.radb.net"
+#undef AS_DEBUG_FILE
+
+struct aslookup {
+	FILE *as_f;
+#ifdef AS_DEBUG_FILE
+	FILE *as_debug;
+#endif /* AS_DEBUG_FILE */
+};
+
+void *
+as_setup(server)
+	char *server;
+{
+	struct aslookup *asn;
+	struct hostent *he = NULL;
+	struct servent *se;
+	struct sockaddr_in in;
+	FILE *f;
+	int s;
+
+	if (server == NULL)
+		server = DEFAULT_AS_SERVER;
+
+	(void)memset(&in, 0, sizeof(in));
+	in.sin_family = AF_INET;
+	in.sin_len = sizeof(in);
+	if ((se = getservbyname("whois", "tcp")) == NULL) {
+		warnx("warning: whois/tcp service not found");
+		in.sin_port = ntohs(43);
+	} else
+		in.sin_port = se->s_port;
+
+	if (inet_aton(server, &in.sin_addr) == 0 && 
+	    ((he = gethostbyname(server)) == NULL ||
+	    he->h_addr == NULL)) {
+		warnx("%s: %s", server, hstrerror(h_errno));
+		return (NULL);
+	}
+
+	if ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
+		warn("socket");
+		return (NULL);
+	}
+
+	do {
+		if (he != NULL) {
+			memcpy(&in.sin_addr, he->h_addr, he->h_length);
+			he->h_addr_list++;
+		}
+		if (connect(s, (struct sockaddr *)&in, sizeof(in)) == 0)
+			break;
+		if (he == NULL || he->h_addr == NULL) {
+			close(s);
+			s = -1;
+			break;
+		}
+	} while (1);
+
+	if (s == -1) {
+		warn("connect");
+		return (NULL);
+	}
+
+	f = fdopen(s, "r+");
+	(void)fprintf(f, "!!\n");
+	(void)fflush(f);
+
+	asn = malloc(sizeof(struct aslookup));
+	if (asn == NULL)
+		(void)fclose(f);
+	else
+		asn->as_f = f;
+
+#ifdef AS_DEBUG_FILE
+	asn->as_debug = fopen(AS_DEBUG_FILE, "w");
+	if (asn->as_debug) {
+		(void)fprintf(asn->as_debug, ">> !!\n");
+		(void)fflush(asn->as_debug);
+	}
+#endif /* AS_DEBUG_FILE */
+
+	return (asn);
+}
+
+int
+as_lookup(_asn, addr)
+	void *_asn;
+	struct in_addr *addr;
+{
+	struct aslookup *asn = _asn;
+	char buf[1024];
+	int as, rc, dlen;
+
+	as = rc = dlen = 0;
+	(void)fprintf(asn->as_f, "!r%s/32,l\n", inet_ntoa(*addr));
+	(void)fflush(asn->as_f);
+
+#ifdef AS_DEBUG_FILE
+	if (asn->as_debug) {
+		(void)fprintf(asn->as_debug, ">> !r%s/32,l\n",
+		     inet_ntoa(*addr));
+		(void)fflush(asn->as_debug);
+	}
+#endif /* AS_DEBUG_FILE */
+
+	while (fgets(buf, sizeof(buf), asn->as_f) != NULL) {
+		buf[sizeof(buf) - 1] = '\0';
+
+#ifdef AS_DEBUG_FILE
+		if (asn->as_debug) {
+			(void)fprintf(asn->as_debug, "<< %s", buf);
+			(void)fflush(asn->as_debug);
+		}
+#endif /* AS_DEBUG_FILE */
+
+		if (rc == 0) {
+			rc = buf[0];
+			switch (rc) {
+			    case 'A':
+				/* A - followed by # bytes of answer */
+				sscanf(buf, "A%d\n", &dlen);
+#ifdef AS_DEBUG_FILE
+				if (asn->as_debug) {
+					(void)fprintf(asn->as_debug,
+					     "dlen: %d\n", dlen);
+					(void)fflush(asn->as_debug);
+				}
+#endif /* AS_DEBUG_FILE */
+				break;
+			    case 'C':	
+			    case 'D':
+			    case 'E':
+			    case 'F':
+				/* C - no data returned */
+				/* D - key not found */
+				/* E - multiple copies of key */
+				/* F - some other error */
+				break;
+			}
+			if (rc == 'A')
+				/* skip to next input line */
+				continue;
+		}
+
+		if (dlen == 0)
+			/* out of data, next char read is end code */
+			rc = buf[0];
+		if (rc != 'A')
+			/* either an error off the bat, or a done code */
+			break;
+
+		/* data received, thank you */
+		dlen -= strlen(buf);
+
+		/* origin line is the interesting bit */
+		if (as == 0 && strncasecmp(buf, "origin:", 7) == 0) {
+			sscanf(buf + 7, " AS%d", &as);
+#ifdef AS_DEBUG_FILE
+			if (asn->as_debug) {
+				(void)fprintf(asn->as_debug, "as: %d\n", as);
+				(void)fflush(asn->as_debug);
+			}
+#endif /* AS_DEBUG_FILE */
+		}
+	}
+
+	return (as);
+}
+
+void
+as_shutdown(_asn)
+	void *_asn;
+{
+	struct aslookup *asn = _asn;
+
+	(void)fprintf(asn->as_f, "!q\n");
+	(void)fclose(asn->as_f);
+
+#ifdef AS_DEBUG_FILE
+	if (asn->as_debug) {
+		(void)fprintf(asn->as_debug, ">> !q\n");
+		(void)fclose(asn->as_debug);
+	}
+#endif /* AS_DEBUG_FILE */
+
+	free(asn);
+}