/* 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 "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( !is_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) { fstring response; int i, count, maxlen, size; struct node_status *status; DEBUG(3, ("[%5d]: wins_byip %s\n", 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); return WINBINDD_ERROR; } safe_strcat(response,state->request.data.winsreq,maxlen); safe_strcat(response,"\t",maxlen); 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); return WINBINDD_ERROR; } safe_strcat(response, status[i].name, maxlen); safe_strcat(response, " ", maxlen); } } /* make last character a newline */ response[strlen(response)-1] = '\n'; SAFE_FREE(status); } fstrcpy(state->response.data.winsresp,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, maxlen, size; fstring response; char * addr; DEBUG(3, ("[%5d]: wins_byname %s\n", 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); return WINBINDD_ERROR; } if (i != 0) { /* Clear out the newline character */ response[strlen(response)-1] = ' '; } safe_strcat(response,addr,maxlen); safe_strcat(response,"\t",maxlen); } size = strlen(state->request.data.winsreq) + strlen(response); if (size > maxlen) { SAFE_FREE(ip_list); return WINBINDD_ERROR; } safe_strcat(response,state->request.data.winsreq,maxlen); safe_strcat(response,"\n",maxlen); SAFE_FREE(ip_list); } else return WINBINDD_ERROR; fstrcpy(state->response.data.winsresp,response); return WINBINDD_OK; }