adding wins commands to winbindd - will check in the rest of the changes

after further testing in 2.2 branch.
(This used to be commit d5cdbc7e4ff48273bd7616694eef98c61e6f1f33)

1 files changed, 211 insertions, 0 deletions

diff --git a/source3/nsswitch/winbindd_wins.c b/source3/nsswitch/winbindd_wins.c
new file mode 100644
index 0000000000..04200d6f47
--- /dev/null
+++ b/source3/nsswitch/winbindd_wins.c
@@ -0,0 +1,211 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 2.0
+
+   Winbind daemon - WINS related functions
+
+   Copyright (C) Andrew Tridgell 1999
+   Copyright (C) Herb Lewis 2002
+   
+   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.
+*/
+
+#include "winbindd.h"
+
+/* Use our own create socket code so we don't recurse.... */
+
+static int wins_lookup_open_socket_in(void)
+{
+	struct sockaddr_in sock;
+	int val=1;
+	int res;
+
+	memset((char *)&sock,'\0',sizeof(sock));
+
+#ifdef HAVE_SOCK_SIN_LEN
+	sock.sin_len = sizeof(sock);
+#endif
+	sock.sin_port = 0;
+	sock.sin_family = AF_INET;
+	sock.sin_addr.s_addr = interpret_addr("0.0.0.0");
+	res = socket(AF_INET, SOCK_DGRAM, 0);
+	if (res == -1)
+		return -1;
+
+	setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
+#ifdef SO_REUSEPORT
+	setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val));
+#endif /* SO_REUSEPORT */
+
+	/* now we've got a socket - we need to bind it */
+
+	if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) < 0) {
+		close(res);
+		return(-1);
+	}
+
+	set_socket_options(res,"SO_BROADCAST");
+
+	return res;
+}
+
+
+static struct node_status *lookup_byaddr_backend(char *addr, int *count)
+{
+	int fd;
+	struct in_addr  ip;
+	struct nmb_name nname;
+	struct node_status *status;
+
+	fd = wins_lookup_open_socket_in();
+	if (fd == -1)
+		return NULL;
+
+	make_nmb_name(&nname, "*", 0);
+	ip = *interpret_addr2(addr);
+	status = node_status_query(fd,&nname,ip, count);
+
+	close(fd);
+	return status;
+}
+
+static struct in_addr *lookup_byname_backend(const char *name, int *count)
+{
+	int fd;
+	struct in_addr *ret = NULL;
+	struct in_addr  p;
+	int j;
+
+	*count = 0;
+
+	fd = wins_lookup_open_socket_in();
+	if (fd == -1)
+		return NULL;
+
+	p = wins_srv_ip();
+	if( !zero_ip(p) ) {
+		ret = name_query(fd,name,0x20,False,True, p, count);
+		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);
+		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);
+		if (ret) break;
+	}
+
+ out:
+
+	close(fd);
+	return ret;
+}
+
+/* Get hostname from IP  */
+
+enum winbindd_result winbindd_wins_byip(struct winbindd_cli_state *state)
+{
+	char response[1024];
+	int i, count, len, size;
+	struct node_status *status;
+
+	DEBUG(3, ("[%5d]: wins_byip %s\n", state->pid,
+		state->request.data.name));
+
+	*response = '\0';
+	len = sizeof(response) - 2;
+
+	if ( status = lookup_byaddr_backend(state->request.data.name, &count)) {
+	    size = strlen(state->request.data.name) + 1;
+	    if (size > len) {
+		SAFE_FREE(status);
+		return WINBINDD_ERROR;
+	    }
+	    len -= size;
+	    strncat(response,state->request.data.name,size);
+	    strncat(response,"\t",1);
+	    for (i = 0; i < count; i++) {
+		/* ignore group names */
+		if (status[i].flags & 0x80) continue;
+		if (status[i].type == 0x20) {
+			size = sizeof(status[i].name) + 1;
+			if (size > len) {
+			    SAFE_FREE(status);
+			    return WINBINDD_ERROR;
+			}
+			len -= size;
+			strncat(response, status[i].name, size);
+			strncat(response, " ", 1);
+		}
+	    }
+	    response[strlen(response)-1] = '\n';
+	    SAFE_FREE(status);
+	}
+	fstrcpy(state->response.data.name.name,response);
+	return WINBINDD_OK;
+}
+
+/* Get IP from hostname */
+
+enum winbindd_result winbindd_wins_byname(struct winbindd_cli_state *state)
+{
+	struct in_addr *ip_list;
+	int i, count, len, size;
+	char response[1024];
+	char * addr;
+
+	DEBUG(3, ("[%5d]: wins_byname %s\n", state->pid,
+		state->request.data.name));
+
+	*response = '\0';
+	len = sizeof(response) - 2;
+
+	if (ip_list = lookup_byname_backend(state->request.data.name, &count)) {
+		for (i = count; i ; i--) {
+		    addr = inet_ntoa(ip_list[i-1]);
+		    size = strlen(addr) + 1;
+		    if (size > len) {
+			SAFE_FREE(ip_list);
+			return WINBINDD_ERROR;
+		    }
+		    len -= size;
+		    if (i != 0)
+			response[strlen(response)-1] = ' ';
+		    strncat(response,addr,size);
+		    strncat(response,"\t",1);
+		}
+		size = strlen(state->request.data.name) + 1;
+		if (size > len) {
+		    SAFE_FREE(ip_list);
+		    return WINBINDD_ERROR;
+		}   
+		strncat(response,state->request.data.name,size);
+		strncat(response,"\n",1);
+		SAFE_FREE(ip_list);
+	} else
+		return WINBINDD_ERROR;
+
+	fstrcpy(state->response.data.name.name,response);
+
+	return WINBINDD_OK;
+}