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/*
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "winbindd.h"
#include "libsmb/nmblib.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
static struct sockaddr_storage *lookup_byname_backend(TALLOC_CTX *mem_ctx,
const char *name,
int *count)
{
struct ip_service *ret = NULL;
struct sockaddr_storage *return_ss = NULL;
int j, i;
NTSTATUS status;
*count = 0;
/* always try with wins first */
if (NT_STATUS_IS_OK(resolve_wins(name,0x20,&ret,count))) {
if ( *count == 0 )
return NULL;
return_ss = talloc_array(mem_ctx, struct sockaddr_storage,
*count);
if (return_ss == NULL ) {
free( ret );
return NULL;
}
/* copy the IP addresses */
for ( i=0; i<(*count); i++ )
return_ss[i] = ret[i].ss;
free( ret );
return return_ss;
}
/* uggh, we have to broadcast to each interface in turn */
for (j=iface_count() - 1;
j >= 0;
j--) {
const struct sockaddr_storage *bcast_ss = iface_n_bcast(j);
if (!bcast_ss) {
continue;
}
status = name_query(name, 0x20, True, True,bcast_ss,
mem_ctx, &return_ss, count, NULL);
if (NT_STATUS_IS_OK(status)) {
break;
}
}
return return_ss;
}
/* Get IP from hostname */
void winbindd_wins_byname(struct winbindd_cli_state *state)
{
struct sockaddr_storage *ip_list = NULL;
int i, count, maxlen, size;
fstring response;
char addr[INET6_ADDRSTRLEN];
/* 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;
ip_list = lookup_byname_backend(
state->mem_ctx, state->request->data.winsreq, &count);
if (ip_list != NULL){
for (i = count; i ; i--) {
print_sockaddr(addr, sizeof(addr), &ip_list[i-1]);
size = strlen(addr);
if (size > maxlen) {
TALLOC_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] = ' ';
}
}
strlcat(response,addr,sizeof(response));
strlcat(response,"\t",sizeof(response));
}
size = strlen(state->request->data.winsreq) + strlen(response);
if (size > maxlen) {
TALLOC_FREE(ip_list);
request_error(state);
return;
}
strlcat(response,state->request->data.winsreq,sizeof(response));
strlcat(response,"\n",sizeof(response));
TALLOC_FREE(ip_list);
} else {
request_error(state);
return;
}
strlcpy(state->response->data.winsresp,
response,
sizeof(state->response->data.winsresp));
request_ok(state);
}
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