1 files changed, 129 insertions, 0 deletions
diff --git a/source3/nsswitch/wins.c b/source3/nsswitch/wins.c
new file mode 100644
index 0000000000..6c291bb1bf
--- /dev/null
+++ b/source3/nsswitch/wins.c
@@ -0,0 +1,129 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 2.0
+   a WINS nsswitch module 
+   Copyright (C) Andrew Tridgell 1999
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   
+*/
+
+#define NO_SYSLOG
+
+#include "includes.h"
+#include <nss.h>
+
+extern int DEBUGLEVEL;
+
+#ifndef INADDRSZ
+#define INADDRSZ 4
+#endif
+
+struct in_addr *lookup_backend(const char *name, int *count)
+{
+	int fd;
+	static int initialised;
+	struct in_addr *ret;
+	char *p;
+	int j;
+
+	if (!initialised) {
+		initialised = 1;
+		DEBUGLEVEL = 0;
+		TimeInit();
+		setup_logging("nss_wins",True);
+		charset_initialise();
+		lp_load(CONFIGFILE,True,False,False);
+		load_interfaces();
+	}
+
+	*count = 0;
+
+	fd = open_socket_in(SOCK_DGRAM,0, 3, interpret_addr("0.0.0.0"), True);
+	if (fd == -1) return NULL;
+
+	set_socket_options(fd,"SO_BROADCAST");
+
+	p = lp_wins_server();
+	if (p && *p) {
+		ret = name_query(fd,name,0x20,False,True, *interpret_addr2(p), count,NULL);
+		goto out;
+	}
+
+	if (lp_wins_support()) {
+		/* we are our own WINS server */
+		ret = name_query(fd,name,0x20,False,True, *interpret_addr2("127.0.0.1"), count,NULL);
+		goto out;
+	}
+
+	/* uggh, we have to broadcast to each interface in turn */
+	for (j=iface_count() - 1;
+	     j >= 0;
+	     j--) {
+		struct in_addr *bcast = iface_n_bcast(j);
+		ret = name_query(fd,name,0x20,True,True,*bcast,count,NULL);
+		if (ret) break;
+	}
+
+ out:
+	close(fd);
+	return ret;
+}
+
+
+/****************************************************************************
+gethostbyname() - we ignore any domain portion of the name and only
+handle names that are at most 15 characters long
+  **************************************************************************/
+enum nss_status 
+_nss_wins_gethostbyname_r(const char *name, struct hostent *he,
+			  char *buffer, size_t buflen, int *errnop,
+			  int *h_errnop)
+{
+	char **host_addresses;
+	struct in_addr *ip_list;
+	int i, count;
+
+	ip_list = lookup_backend(name, &count);
+	if (!ip_list) {
+		return NSS_STATUS_NOTFOUND;
+	}
+
+	if (buflen < (2*count+1)*INADDRSZ) {
+		/* no ENOMEM error type?! */
+		return NSS_STATUS_NOTFOUND;
+	}
+
+
+	host_addresses = (char **)buffer;
+	he->h_addr_list = host_addresses;
+	host_addresses[count] = NULL;
+	buffer += (count + 1) * INADDRSZ;
+	buflen += (count + 1) * INADDRSZ;
+	he->h_addrtype = AF_INET;
+	he->h_length = INADDRSZ;
+
+	for (i=0;i<count;i++) {
+		memcpy(buffer, &ip_list[i].s_addr, INADDRSZ);
+		*host_addresses = buffer;
+		buffer += INADDRSZ;
+		buflen -= INADDRSZ;
+		host_addresses++;
+	}
+
+	if (ip_list) free(ip_list);
+
+	return NSS_STATUS_SUCCESS;
+}