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/*
Unix SMB / CIFS implementation .
async implementation of WINBINDD_WINS_BYIP
Copyright ( C ) Volker Lendecke 2011
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"
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# include "libsmb/namequery.h"
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# include "librpc/gen_ndr/ndr_winbind_c.h"
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# include "libsmb/nmblib.h"
struct winbindd_wins_byip_state {
struct nmb_name star ;
struct sockaddr_storage addr ;
fstring response ;
} ;
static void winbindd_wins_byip_done ( struct tevent_req * subreq ) ;
struct tevent_req * winbindd_wins_byip_send ( TALLOC_CTX * mem_ctx ,
struct tevent_context * ev ,
struct winbindd_cli_state * cli ,
struct winbindd_request * request )
{
struct tevent_req * req , * subreq ;
struct winbindd_wins_byip_state * state ;
req = tevent_req_create ( mem_ctx , & state ,
struct winbindd_wins_byip_state ) ;
if ( req = = NULL ) {
return NULL ;
}
/* Ensure null termination */
request - > data . winsreq [ sizeof ( request - > data . winsreq ) - 1 ] = ' \0 ' ;
fstr_sprintf ( state - > response , " %s \t " , request - > data . winsreq ) ;
DEBUG ( 3 , ( " [%5lu]: wins_byip %s \n " , ( unsigned long ) cli - > pid ,
request - > data . winsreq ) ) ;
make_nmb_name ( & state - > star , " * " , 0 ) ;
if ( ! interpret_string_addr ( & state - > addr , request - > data . winsreq ,
AI_NUMERICHOST ) ) {
tevent_req_nterror ( req , NT_STATUS_INVALID_PARAMETER ) ;
return tevent_req_post ( req , ev ) ;
}
subreq = node_status_query_send ( state , ev , & state - > star ,
& state - > addr ) ;
if ( tevent_req_nomem ( subreq , req ) ) {
return tevent_req_post ( req , ev ) ;
}
tevent_req_set_callback ( subreq , winbindd_wins_byip_done , req ) ;
return req ;
}
static void winbindd_wins_byip_done ( struct tevent_req * subreq )
{
struct tevent_req * req = tevent_req_callback_data (
subreq , struct tevent_req ) ;
struct winbindd_wins_byip_state * state = tevent_req_data (
req , struct winbindd_wins_byip_state ) ;
struct node_status * names ;
int i , num_names ;
NTSTATUS status ;
status = node_status_query_recv ( subreq , talloc_tos ( ) , & names ,
& num_names , NULL ) ;
TALLOC_FREE ( subreq ) ;
if ( tevent_req_nterror ( req , status ) ) {
return ;
}
for ( i = 0 ; i < num_names ; i + + ) {
size_t size ;
/*
* ignore group names
*/
if ( names [ i ] . flags & 0x80 ) {
continue ;
}
/*
* Only report 0x20
*/
if ( names [ i ] . type ! = 0x20 ) {
continue ;
}
DEBUG ( 10 , ( " got name %s \n " , names [ i ] . name ) ) ;
size = strlen ( names [ i ] . name + strlen ( state - > response ) ) ;
if ( size > sizeof ( state - > response ) - 1 ) {
DEBUG ( 10 , ( " To much data \n " ) ) ;
tevent_req_nterror ( req , STATUS_BUFFER_OVERFLOW ) ;
return ;
}
fstrcat ( state - > response , names [ i ] . name ) ;
fstrcat ( state - > response , " " ) ;
}
state - > response [ strlen ( state - > response ) - 1 ] = ' \n ' ;
DEBUG ( 10 , ( " response: %s " , state - > response ) ) ;
TALLOC_FREE ( names ) ;
tevent_req_done ( req ) ;
}
NTSTATUS winbindd_wins_byip_recv ( struct tevent_req * req ,
struct winbindd_response * presp )
{
struct winbindd_wins_byip_state * state = tevent_req_data (
req , struct winbindd_wins_byip_state ) ;
NTSTATUS status ;
if ( tevent_req_is_nterror ( req , & status ) ) {
return status ;
}
fstrcpy ( presp - > data . winsresp , state - > response ) ;
return NT_STATUS_OK ;
}