1 files changed, 145 insertions, 0 deletions
diff --git a/lib/libc/net/gethostbynis.c b/lib/libc/net/gethostbynis.c
new file mode 100644
index 0000000..82e0b3d
--- /dev/null
+++ b/lib/libc/net/gethostbynis.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1994, Garrett Wollman
+ *
+ * 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 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)$FreeBSD$";
+static char rcsid[] = "$FreeBSD$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#ifdef YP
+static char *host_aliases[MAXALIASES];
+static char hostaddr[MAXADDRS];
+static char *host_addrs[2];
+#endif /* YP */
+
+static struct hostent *
+_gethostbynis(name, map, af)
+	const char *name;
+	char *map;
+	int af;
+{
+#ifdef YP
+	register char *cp, **q;
+	char *result;
+	int resultlen,size;
+	static struct hostent h;
+	static char *domain = (char *)NULL;
+	static char ypbuf[YPMAXRECORD + 2];
+
+	switch(af) {
+	case AF_INET:
+		size = NS_INADDRSZ;
+		break;
+	default:
+	case AF_INET6:
+		size = NS_IN6ADDRSZ;
+		errno = EAFNOSUPPORT;
+		return NULL;
+	}
+
+	if (domain == (char *)NULL)
+		if (yp_get_default_domain (&domain))
+			return ((struct hostent *)NULL);
+
+	if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
+		return ((struct hostent *)NULL);
+
+	/* avoid potential memory leak */
+	bcopy((char *)result, (char *)&ypbuf, resultlen);
+	ypbuf[resultlen] = '\0';
+	free(result);
+	result = (char *)&ypbuf;
+
+	if ((cp = index(result, '\n')))
+		*cp = '\0';
+
+	cp = strpbrk(result, " \t");
+	*cp++ = '\0';
+	h.h_addr_list = host_addrs;
+	h.h_addr = hostaddr;
+	*((u_long *)h.h_addr) = inet_addr(result);
+	h.h_length = size;
+	h.h_addrtype = AF_INET;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	h.h_name = cp;
+	q = h.h_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&h);
+#else
+	return (NULL);
+#endif /* YP */
+}
+
+struct hostent *
+_gethostbynisname(name, af)
+	const char *name;
+	int af;
+{
+	return _gethostbynis(name, "hosts.byname", af);
+}
+
+struct hostent *
+_gethostbynisaddr(addr, len, af)
+	const char *addr;
+	int len;
+	int af;
+{
+	return _gethostbynis(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af);
+}