--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+
+ 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 "includes.h"
+#include "winbindd.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+/* 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 NODE_STATUS_STRUCT *lookup_byaddr_backend(char *addr, int *count)
+{
+ int fd;
+ struct in_addr ip;
+ struct nmb_name nname;
+ NODE_STATUS_STRUCT *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, NULL);
+
+ close(fd);
+ return status;
+}
+
+static struct in_addr *lookup_byname_backend(const char *name, int *count)
+{
+ int fd;
+ struct ip_service *ret = NULL;
+ struct in_addr *return_ip = NULL;
+ int j, i, flags = 0;
+
+ *count = 0;
+
+ /* always try with wins first */
+ if (resolve_wins(name,0x20,&ret,count)) {
+ if ( count == 0 )
+ return NULL;
+ if ( (return_ip = SMB_MALLOC_ARRAY(struct in_addr, *count)) == NULL ) {
+ free( ret );
+ return NULL;
+ }
+
+ /* copy the IP addresses */
+ for ( i=0; i<(*count); i++ )
+ return_ip[i] = ret[i].ip;
+
+ free( ret );
+ return return_ip;
+ }
+
+ fd = wins_lookup_open_socket_in();
+ if (fd == -1) {
+ return NULL;
+ }
+
+ /* 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);
+ return_ip = name_query(fd,name,0x20,True,True,*bcast,count, &flags, NULL);
+ if (return_ip) {
+ break;
+ }
+ }
+
+ close(fd);
+ return return_ip;
+}
+
+/* Get hostname from IP */
+
+void winbindd_wins_byip(struct winbindd_cli_state *state)
+{
+ fstring response;
+ int i, count, maxlen, size;
+ NODE_STATUS_STRUCT *status;
+
+ /* Ensure null termination */
+ state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
+
+ DEBUG(3, ("[%5lu]: wins_byip %s\n", (unsigned long)state->pid,
+ state->request.data.winsreq));
+
+ *response = '\0';
+ maxlen = sizeof(response) - 1;
+
+ if ((status = lookup_byaddr_backend(state->request.data.winsreq, &count))){
+ size = strlen(state->request.data.winsreq);
+ if (size > maxlen) {
+ SAFE_FREE(status);
+ request_error(state);
+ return;
+ }
+ fstrcat(response,state->request.data.winsreq);
+ fstrcat(response,"\t");
+ 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) + strlen(response);
+ if (size > maxlen) {
+ SAFE_FREE(status);
+ request_error(state);
+ return;
+ }
+ fstrcat(response, status[i].name);
+ fstrcat(response, " ");
+ }
+ }
+ /* make last character a newline */
+ response[strlen(response)-1] = '\n';
+ SAFE_FREE(status);
+ }
+ fstrcpy(state->response.data.winsresp,response);
+ request_ok(state);
+}
+
+/* Get IP from hostname */
+
+void winbindd_wins_byname(struct winbindd_cli_state *state)
+{
+ struct in_addr *ip_list;
+ int i, count, maxlen, size;
+ fstring response;
+ char * addr;
+
+ /* Ensure null termination */
+ state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
+
+ DEBUG(3, ("[%5lu]: wins_byname %s\n", (unsigned long)state->pid,
+ state->request.data.winsreq));
+
+ *response = '\0';
+ maxlen = sizeof(response) - 1;
+
+ if ((ip_list = lookup_byname_backend(state->request.data.winsreq,&count))){
+ for (i = count; i ; i--) {
+ addr = inet_ntoa(ip_list[i-1]);
+ size = strlen(addr);
+ if (size > maxlen) {
+ SAFE_FREE(ip_list);
+ request_error(state);
+ return;
+ }
+ if (i != 0) {
+ /* Clear out the newline character */
+ /* But only if there is something in there,
+ otherwise we clobber something in the stack */
+ if (strlen(response))
+ response[strlen(response)-1] = ' ';
+ }
+ fstrcat(response,addr);
+ fstrcat(response,"\t");
+ }
+ size = strlen(state->request.data.winsreq) + strlen(response);
+ if (size > maxlen) {
+ SAFE_FREE(ip_list);
+ request_error(state);
+ return;
+ }
+ fstrcat(response,state->request.data.winsreq);
+ fstrcat(response,"\n");
+ SAFE_FREE(ip_list);
+ } else {
+ request_error(state);
+ return;
+ }
+
+ fstrcpy(state->response.data.winsresp,response);
+
+ request_ok(state);
+}
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