nmbd_namerelease.c [plain text]
#include "includes.h"
static void release_name_response(struct subnet_record *subrec,
struct response_record *rrec, struct packet_struct *p)
{
struct nmb_packet *nmb = &p->packet.nmb;
BOOL bcast = nmb->header.nm_flags.bcast;
BOOL success = True;
struct nmb_name *question_name = &rrec->packet->packet.nmb.question.question_name;
struct nmb_name *answer_name = &nmb->answers->rr_name;
struct in_addr released_ip;
if(!nmb_name_equal(question_name, answer_name))
{
DEBUG(0,("release_name_response: Answer name %s differs from question \
name %s.\n", nmb_namestr(answer_name), nmb_namestr(question_name)));
return;
}
if(bcast)
{
DEBUG(1,("release_name_response: A response for releasing name %s was received on a \
broadcast subnet %s. This should not happen !\n", nmb_namestr(answer_name), subrec->subnet_name));
return;
}
else
{
if(nmb->header.rcode != 0)
{
success = False;
DEBUG(0,("release_name_response: WINS server at IP %s rejected our \
name release of name %s with error code %d.\n", inet_ntoa(p->ip),
nmb_namestr(answer_name), nmb->header.rcode));
}
else if(nmb->header.opcode == NMB_WACK_OPCODE)
{
DEBUG(5,("release_name_response: WACK from WINS server %s in releasing \
name %s on subnet %s.\n", inet_ntoa(p->ip), nmb_namestr(answer_name), subrec->subnet_name));
rrec->repeat_count = 0;
rrec->repeat_time = p->timestamp + nmb->answers->ttl;
rrec->num_msgs--;
return;
}
}
DEBUG(5,("release_name_response: %s in releasing name %s on subnet %s.\n",
success ? "success" : "failure", nmb_namestr(answer_name), subrec->subnet_name));
if(success)
{
putip((char*)&released_ip ,&nmb->answers->rdata[2]);
if(rrec->success_fn)
(*(release_name_success_function)rrec->success_fn)(subrec, rrec->userdata, answer_name, released_ip);
standard_success_release( subrec, rrec->userdata, answer_name, released_ip);
}
else
{
if(rrec->fail_fn)
(*(release_name_fail_function)rrec->fail_fn)(subrec, rrec, answer_name);
}
remove_response_record(subrec, rrec);
}
static void release_name_timeout_response(struct subnet_record *subrec,
struct response_record *rrec)
{
struct nmb_packet *sent_nmb = &rrec->packet->packet.nmb;
BOOL bcast = sent_nmb->header.nm_flags.bcast;
BOOL success = False;
struct nmb_name *question_name = &sent_nmb->question.question_name;
struct in_addr released_ip;
if(bcast)
{
if(rrec->num_msgs == 0)
{
success = True;
putip((char*)&released_ip ,&sent_nmb->additional->rdata[2]);
}
}
else
{
if(rrec->num_msgs == 0)
{
DEBUG(2,("release_name_timeout_response: WINS server at address %s is not \
responding.\n", inet_ntoa(rrec->packet->ip)));
rrec->repeat_count = 3;
rrec->repeat_interval *= 2;
if(rrec->repeat_interval > (5 * 60))
rrec->repeat_interval = (5 * 60);
rrec->repeat_time = time(NULL) + rrec->repeat_interval;
DEBUG(5,("release_name_timeout_response: increasing WINS timeout to %d seconds.\n",
(int)rrec->repeat_interval));
return;
}
}
DEBUG(5,("release_name_timeout_response: %s in releasing name %s on subnet %s.\n",
success ? "success" : "failure", nmb_namestr(question_name), subrec->subnet_name));
if(success && rrec->success_fn)
{
if(rrec->success_fn)
(*(release_name_success_function)rrec->success_fn)(subrec, rrec->userdata, question_name, released_ip);
standard_success_release( subrec, rrec->userdata, question_name, released_ip);
}
else
{
if( rrec->fail_fn)
(*(release_name_fail_function)rrec->fail_fn)(subrec, rrec, question_name);
}
remove_response_record(subrec, rrec);
}
BOOL release_name(struct subnet_record *subrec, struct name_record *namerec,
release_name_success_function success_fn,
release_name_fail_function fail_fn,
struct userdata_struct *userdata)
{
int i;
if((namerec->data.source != SELF_NAME) || !NAME_IS_ACTIVE(namerec))
{
DEBUG(0,("release_name: Cannot release name %s from subnet %s. Source was %d \n",
nmb_namestr(&namerec->name), subrec->subnet_name, namerec->data.source));
return True;
}
namerec->data.nb_flags |= NB_DEREG;
for( i = 0; i < namerec->data.num_ips; i++)
{
if(queue_release_name( subrec,
release_name_response,
release_name_timeout_response,
(i == (namerec->data.num_ips - 1)) ? success_fn : NULL,
(i == (namerec->data.num_ips - 1)) ? fail_fn : NULL,
(i == (namerec->data.num_ips - 1)) ? userdata : NULL,
&namerec->name,
namerec->data.nb_flags,
namerec->data.ip[i]) == NULL)
{
DEBUG(0,("release_name: Failed to send packet trying to release name %s IP %s\n",
nmb_namestr(&namerec->name), inet_ntoa(namerec->data.ip[i]) ));
return True;
}
}
return False;
}