/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
NBT netbios routines and daemon - version 2
Copyright (C) Jeremy Allison 1994-1998
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
+ 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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-extern int DEBUGLEVEL;
-
/****************************************************************************
Function called when the name lookup succeeded.
****************************************************************************/
struct userdata_struct *userdata,
struct nmb_name *nmbname, struct in_addr ip, struct res_rec *rrec)
{
- struct packet_struct *original_packet;
- struct subnet_record *orig_broadcast_subnet;
- struct name_record *namerec;
- uint16 nb_flags;
- int num_ips;
- int i;
- int ttl = 3600; /* By default one hour in the cache. */
- struct in_addr *iplist;
-
- /* Extract the original packet and the original broadcast subnet from
- the userdata. */
-
- memcpy( (char *)&orig_broadcast_subnet, userdata->data, sizeof(struct subnet_record *) );
- memcpy( (char *)&original_packet, &userdata->data[sizeof(struct subnet_record *)],
- sizeof(struct packet_struct *) );
-
- nb_flags = get_nb_flags( rrec->rdata );
-
- num_ips = rrec->rdlength / 6;
- if(num_ips == 0)
- {
- DEBUG(0,("wins_proxy_name_query_request_success: Invalid number of IP records (0) \
+ unstring name;
+ struct packet_struct *original_packet;
+ struct subnet_record *orig_broadcast_subnet;
+ struct name_record *namerec = NULL;
+ uint16 nb_flags;
+ int num_ips;
+ int i;
+ int ttl = 3600; /* By default one hour in the cache. */
+ struct in_addr *iplist;
+
+ /* Extract the original packet and the original broadcast subnet from
+ the userdata. */
+
+ memcpy( (char *)&orig_broadcast_subnet, userdata->data, sizeof(struct subnet_record *) );
+ memcpy( (char *)&original_packet, &userdata->data[sizeof(struct subnet_record *)],
+ sizeof(struct packet_struct *) );
+
+ if (rrec) {
+ nb_flags = get_nb_flags( rrec->rdata );
+ num_ips = rrec->rdlength / 6;
+ } else {
+ nb_flags = 0;
+ num_ips = 0;
+ }
+
+ if(num_ips == 0) {
+ DEBUG(0,("wins_proxy_name_query_request_success: Invalid number of IP records (0) \
returned for name %s.\n", nmb_namestr(nmbname) ));
- return;
- }
-
- if(num_ips == 1)
- iplist = &ip;
- else
- {
- if((iplist = (struct in_addr *)malloc( num_ips * sizeof(struct in_addr) )) == NULL)
- {
- DEBUG(0,("wins_proxy_name_query_request_success: malloc fail !\n"));
- return;
- }
-
- for(i = 0; i < num_ips; i++)
- putip( (char *)&iplist[i], (char *)&rrec->rdata[ (i*6) + 2]);
- }
-
- /* Add the queried name to the original subnet as a WINS_PROXY_NAME. */
-
- if(rrec == PERMANENT_TTL)
- ttl = lp_max_ttl();
-
- namerec = add_name_to_subnet( orig_broadcast_subnet, nmbname->name,
- nmbname->name_type, nb_flags, ttl,
- WINS_PROXY_NAME, num_ips, iplist );
-
- if(iplist != &ip)
- free((char *)iplist);
-
- /*
- * Check that none of the IP addresses we are returning is on the
- * same broadcast subnet as the original requesting packet. If it
- * is then don't reply (although we still need to add the name
- * to the cache) as the actual machine will be replying also
- * and we don't want two replies to a broadcast query.
- */
-
- if(namerec && original_packet->packet.nmb.header.nm_flags.bcast)
- {
- for( i = 0; i < namerec->data.num_ips; i++)
- {
- if( same_net( namerec->data.ip[i],
- orig_broadcast_subnet->myip,
- orig_broadcast_subnet->mask_ip ) )
- {
- DEBUG( 5, ( "wins_proxy_name_query_request_success: name %s is a WINS \
+ return;
+ }
+
+ if(num_ips == 1) {
+ iplist = &ip;
+ } else {
+ if((iplist = SMB_MALLOC_ARRAY( struct in_addr, num_ips )) == NULL) {
+ DEBUG(0,("wins_proxy_name_query_request_success: malloc fail !\n"));
+ return;
+ }
+
+ for(i = 0; i < num_ips; i++) {
+ putip( (char *)&iplist[i], (char *)&rrec->rdata[ (i*6) + 2]);
+ }
+ }
+
+ /* Add the queried name to the original subnet as a WINS_PROXY_NAME. */
+
+ if(rrec->ttl == PERMANENT_TTL) {
+ ttl = lp_max_ttl();
+ }
+
+ pull_ascii_nstring(name, sizeof(name), nmbname->name);
+ add_name_to_subnet( orig_broadcast_subnet, name,
+ nmbname->name_type, nb_flags, ttl,
+ WINS_PROXY_NAME, num_ips, iplist );
+
+ if(iplist != &ip) {
+ SAFE_FREE(iplist);
+ }
+
+ namerec = find_name_on_subnet(orig_broadcast_subnet, nmbname, FIND_ANY_NAME);
+ if (!namerec) {
+ DEBUG(0,("wins_proxy_name_query_request_success: failed to add "
+ "name %s to subnet %s !\n",
+ name,
+ orig_broadcast_subnet->subnet_name ));
+ return;
+ }
+
+ /*
+ * Check that none of the IP addresses we are returning is on the
+ * same broadcast subnet as the original requesting packet. If it
+ * is then don't reply (although we still need to add the name
+ * to the cache) as the actual machine will be replying also
+ * and we don't want two replies to a broadcast query.
+ */
+
+ if(namerec && original_packet->packet.nmb.header.nm_flags.bcast) {
+ for( i = 0; i < namerec->data.num_ips; i++) {
+ if( same_net_v4( namerec->data.ip[i], orig_broadcast_subnet->myip,
+ orig_broadcast_subnet->mask_ip ) ) {
+ DEBUG( 5, ( "wins_proxy_name_query_request_success: name %s is a WINS \
proxy name and is also on the same subnet (%s) as the requestor. \
-Not replying.\n",
- nmb_namestr(&namerec->name),
- orig_broadcast_subnet->subnet_name ) );
- return;
- }
- }
- }
-
- /* Finally reply to the original name query. */
- reply_netbios_packet(original_packet, /* Packet to reply to. */
- 0, /* Result code. */
- NMB_QUERY, /* nmbd type code. */
- NMB_NAME_QUERY_OPCODE, /* opcode. */
- ttl, /* ttl. */
- rrec->rdata, /* data to send. */
- rrec->rdlength); /* data length. */
+Not replying.\n", nmb_namestr(&namerec->name), orig_broadcast_subnet->subnet_name ) );
+ return;
+ }
+ }
+ }
+
+ /* Finally reply to the original name query. */
+ reply_netbios_packet(original_packet, /* Packet to reply to. */
+ 0, /* Result code. */
+ NMB_QUERY, /* nmbd type code. */
+ NMB_NAME_QUERY_OPCODE, /* opcode. */
+ ttl, /* ttl. */
+ rrec->rdata, /* data to send. */
+ rrec->rdlength); /* data length. */
}
/****************************************************************************
struct response_record *rrec,
struct nmb_name *question_name, int fail_code)
{
- DEBUG(4,("wins_proxy_name_query_request_fail: WINS server returned error code %d for lookup \
+ DEBUG(4,("wins_proxy_name_query_request_fail: WINS server returned error code %d for lookup \
of name %s.\n", fail_code, nmb_namestr(question_name) ));
}
static struct userdata_struct *wins_proxy_userdata_copy_fn(struct userdata_struct *userdata)
{
- struct packet_struct *p, *copy_of_p;
- struct userdata_struct *new_userdata =
- (struct userdata_struct *)malloc( userdata->userdata_len );
+ struct packet_struct *p, *copy_of_p;
+ struct userdata_struct *new_userdata = (struct userdata_struct *)SMB_MALLOC( userdata->userdata_len );
- if(new_userdata == NULL)
- return NULL;
+ if(new_userdata == NULL)
+ return NULL;
- new_userdata->copy_fn = userdata->copy_fn;
- new_userdata->free_fn = userdata->free_fn;
- new_userdata->userdata_len = userdata->userdata_len;
+ new_userdata->copy_fn = userdata->copy_fn;
+ new_userdata->free_fn = userdata->free_fn;
+ new_userdata->userdata_len = userdata->userdata_len;
- /* Copy the subnet_record pointer. */
- memcpy( new_userdata->data, userdata->data, sizeof(struct subnet_record *) );
+ /* Copy the subnet_record pointer. */
+ memcpy( new_userdata->data, userdata->data, sizeof(struct subnet_record *) );
- /* Extract the pointer to the packet struct */
- memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)],
- sizeof(struct packet_struct *) );
+ /* Extract the pointer to the packet struct */
+ memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)], sizeof(struct packet_struct *) );
- /* Do a deep copy of the packet. */
- if((copy_of_p = copy_packet(p)) == NULL)
- {
- free((char *)new_userdata);
- return NULL;
- }
+ /* Do a deep copy of the packet. */
+ if((copy_of_p = copy_packet(p)) == NULL) {
+ SAFE_FREE(new_userdata);
+ return NULL;
+ }
- /* Lock the copy. */
- copy_of_p->locked = True;
+ /* Lock the copy. */
+ copy_of_p->locked = True;
- memcpy( &new_userdata->data[sizeof(struct subnet_record *)], (char *)©_of_p,
- sizeof(struct packet_struct *) );
+ memcpy( &new_userdata->data[sizeof(struct subnet_record *)], (char *)©_of_p,
+ sizeof(struct packet_struct *) );
- return new_userdata;
+ return new_userdata;
}
/****************************************************************************
static void wins_proxy_userdata_free_fn(struct userdata_struct *userdata)
{
- struct packet_struct *p;
+ struct packet_struct *p;
- /* Extract the pointer to the packet struct */
- memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)],
- sizeof(struct packet_struct *));
+ /* Extract the pointer to the packet struct */
+ memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)],
+ sizeof(struct packet_struct *));
- /* Unlock the packet. */
- p->locked = False;
+ /* Unlock the packet. */
+ p->locked = False;
- free_packet(p);
- ZERO_STRUCTP(userdata);
- free((char *)userdata);
+ free_packet(p);
+ ZERO_STRUCTP(userdata);
+ SAFE_FREE(userdata);
}
/****************************************************************************
struct packet_struct *incoming_packet,
struct nmb_name *question_name)
{
- char ud[sizeof(struct userdata_struct) + sizeof(struct subrec *) +
- sizeof(struct packet_struct *)];
- struct userdata_struct *userdata = (struct userdata_struct *)ud;
-
- bzero(ud, sizeof(ud));
+ union {
+ struct userdata_struct ud;
+ char c[sizeof(struct userdata_struct) + sizeof(struct subrec *) +
+ sizeof(struct packet_struct *)+sizeof(long*)];
+ } ud;
+ struct userdata_struct *userdata = &ud.ud;
+ unstring qname;
+
+ memset(&ud, '\0', sizeof(ud));
- userdata->copy_fn = wins_proxy_userdata_copy_fn;
- userdata->free_fn = wins_proxy_userdata_free_fn;
- userdata->userdata_len = sizeof(ud);
- memcpy( userdata->data, (char *)&subrec, sizeof(struct subnet_record *));
- memcpy( &userdata->data[sizeof(struct subnet_record *)], (char *)&incoming_packet,
- sizeof(struct packet_struct *));
-
- /* Now use the unicast subnet to query the name with the WINS server. */
- query_name( unicast_subnet, question_name->name, question_name->name_type,
- wins_proxy_name_query_request_success,
- wins_proxy_name_query_request_fail,
- userdata);
+ userdata->copy_fn = wins_proxy_userdata_copy_fn;
+ userdata->free_fn = wins_proxy_userdata_free_fn;
+ userdata->userdata_len = sizeof(ud);
+ memcpy( userdata->data, (char *)&subrec, sizeof(struct subnet_record *));
+ memcpy( &userdata->data[sizeof(struct subnet_record *)], (char *)&incoming_packet,
+ sizeof(struct packet_struct *));
+
+ /* Now use the unicast subnet to query the name with the WINS server. */
+ pull_ascii_nstring(qname, sizeof(qname), question_name->name);
+ query_name( unicast_subnet, qname, question_name->name_type,
+ wins_proxy_name_query_request_success,
+ wins_proxy_name_query_request_fail,
+ userdata);
}
git.samba.org / ira / wip.git / blobdiff