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path: root/source3/nmbd/nmbd_winsproxy.c
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Diffstat (limited to 'source3/nmbd/nmbd_winsproxy.c')
-rw-r--r--source3/nmbd/nmbd_winsproxy.c260
1 files changed, 126 insertions, 134 deletions
diff --git a/source3/nmbd/nmbd_winsproxy.c b/source3/nmbd/nmbd_winsproxy.c
index 2e65ebb612..bace112752 100644
--- a/source3/nmbd/nmbd_winsproxy.c
+++ b/source3/nmbd/nmbd_winsproxy.c
@@ -30,92 +30,85 @@ static void wins_proxy_name_query_request_success( struct subnet_record *subrec,
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) \
+ nstring name;
+ 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) \
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)
- SAFE_FREE(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 = (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();
+
+ pull_ascii_nstring(name, nmbname->name);
+ namerec = 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);
+
+ /*
+ * 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 \
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. */
}
/****************************************************************************
@@ -126,7 +119,7 @@ static void wins_proxy_name_query_request_fail(struct subnet_record *subrec,
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) ));
}
@@ -137,38 +130,35 @@ proxy query returns.
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 *)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)
- {
- SAFE_FREE(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 *)&copy_of_p,
- sizeof(struct packet_struct *) );
+ memcpy( &new_userdata->data[sizeof(struct subnet_record *)], (char *)&copy_of_p,
+ sizeof(struct packet_struct *) );
- return new_userdata;
+ return new_userdata;
}
/****************************************************************************
@@ -178,18 +168,18 @@ proxy query returned.
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);
- SAFE_FREE(userdata);
+ free_packet(p);
+ ZERO_STRUCTP(userdata);
+ SAFE_FREE(userdata);
}
/****************************************************************************
@@ -200,22 +190,24 @@ void make_wins_proxy_name_query_request( struct subnet_record *subrec,
struct packet_struct *incoming_packet,
struct nmb_name *question_name)
{
- long *ud[(sizeof(struct userdata_struct) + sizeof(struct subrec *) +
- sizeof(struct packet_struct *))/sizeof(long *) + 1];
- struct userdata_struct *userdata = (struct userdata_struct *)ud;
+ long *ud[(sizeof(struct userdata_struct) + sizeof(struct subrec *) +
+ sizeof(struct packet_struct *))/sizeof(long *) + 1];
+ struct userdata_struct *userdata = (struct userdata_struct *)ud;
+ nstring qname;
- memset(ud, '\0', sizeof(ud));
+ 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, 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);
}
generated by cgit (git 2.34.1) at 2024-07-05 12:40:13 +0000