mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
19f76f391b
ipc.c: Fix for duplicate printer names being long.
loadparm.c: Set bNetWkstaUserLogon to false by default - new code in password.c
protects us.
nmbd_logonnames.c:
nmbd_namequery.c:
nmbd_namerelease.c: Debug messages fix.
password.c: SGI compile warning fix, fix for tcon() with bNetWkstaUserLogon call.
reply.c: SGI compile warning fix.
server.c Debug messages fix.
smbpass.c: Fix for incorrect pointer.
Jeremy.
(This used to be commit 567d3f8389
)
239 lines
8.1 KiB
C
239 lines
8.1 KiB
C
/*
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Unix SMB/Netbios implementation.
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Version 1.9.
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NBT netbios routines and daemon - version 2
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Copyright (C) Andrew Tridgell 1994-1998
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Copyright (C) Luke Kenneth Casson Leighton 1994-1998
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Copyright (C) Jeremy Allison 1994-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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extern int DEBUGLEVEL;
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extern pstring scope;
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/****************************************************************************
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Deal with a response packet when releasing one of our names.
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****************************************************************************/
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static void release_name_response(struct subnet_record *subrec,
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struct response_record *rrec, struct packet_struct *p)
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{
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/*
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* If we are releasing broadcast, then getting a response is an
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* error. If we are releasing unicast, then we expect to get a response.
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*/
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struct nmb_packet *nmb = &p->packet.nmb;
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BOOL bcast = nmb->header.nm_flags.bcast;
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BOOL success = True;
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struct nmb_name *question_name = &rrec->packet->packet.nmb.question.question_name;
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struct nmb_name *answer_name = &nmb->answers->rr_name;
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struct in_addr released_ip;
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/* Sanity check. Ensure that the answer name in the incoming packet is the
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same as the requested name in the outgoing packet. */
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if(!nmb_name_equal(question_name, answer_name))
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{
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DEBUG(0,("release_name_response: Answer name %s differs from question \
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name %s.\n", namestr(answer_name), namestr(question_name)));
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return;
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}
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if(bcast)
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{
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/* Someone sent a response. This shouldn't happen/ */
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DEBUG(1,("release_name_response: A response for releasing name %s was received on a \
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broadcast subnet %s. This should not happen !\n", namestr(answer_name), subrec->subnet_name));
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return;
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}
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else
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{
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/* Unicast - check to see if the response allows us to release the name. */
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if(nmb->header.rcode != 0)
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{
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/* Error code - we were told not to release the name ! What now ! */
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success = False;
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DEBUG(0,("release_name_response: WINS server at IP %s rejected our \
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name release of name %s with error code %d.\n", inet_ntoa(p->ip),
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namestr(answer_name), nmb->header.rcode));
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}
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else if(nmb->header.opcode == NMB_WACK_OPCODE)
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{
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/* WINS server is telling us to wait. Pretend we didn't get
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the response but don't send out any more release requests. */
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DEBUG(5,("release_name_response: WACK from WINS server %s in releasing \
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name %s on subnet %s.\n", inet_ntoa(p->ip), namestr(answer_name), subrec->subnet_name));
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rrec->repeat_count = 0;
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/* How long we should wait for. */
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rrec->repeat_time = p->timestamp + nmb->answers->ttl;
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rrec->num_msgs--;
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return;
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}
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}
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DEBUG(5,("release_name_response: %s in releasing name %s on subnet %s.\n",
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success ? "success" : "failure", namestr(answer_name), subrec->subnet_name));
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if(success)
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{
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putip((char*)&released_ip ,&nmb->answers->rdata[2]);
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if(rrec->success_fn)
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(*rrec->success_fn)(subrec, rrec->userdata, answer_name, released_ip);
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standard_success_release( subrec, rrec->userdata, answer_name, released_ip);
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}
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else
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{
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/* We have no standard_fail_release - maybe we should add one ? */
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if(rrec->fail_fn)
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(*rrec->fail_fn)(subrec, rrec, answer_name);
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}
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remove_response_record(subrec, rrec);
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}
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/****************************************************************************
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Deal with a timeout when releasing one of our names.
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****************************************************************************/
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static void release_name_timeout_response(struct subnet_record *subrec,
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struct response_record *rrec)
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{
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/*
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* If we are releasing unicast, then NOT getting a response is an
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* error - we could not release the name. If we are releasing broadcast,
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* then we don't expect to get a response.
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*/
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struct nmb_packet *sent_nmb = &rrec->packet->packet.nmb;
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BOOL bcast = sent_nmb->header.nm_flags.bcast;
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BOOL success = False;
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struct nmb_name *question_name = &sent_nmb->question.question_name;
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struct in_addr released_ip;
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if(bcast)
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{
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if(rrec->num_msgs == 0)
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{
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/* Not receiving a message is success for broadcast release. */
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success = True;
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/* Get the ip address we were trying to release. */
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putip((char*)&released_ip ,&sent_nmb->additional->rdata[2]);
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}
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}
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else
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{
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/* Unicast - if no responses then it's an error. */
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if(rrec->num_msgs == 0)
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{
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DEBUG(2,("release_name_timeout_response: WINS server at address %s is not \
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responding.\n", inet_ntoa(rrec->packet->ip)));
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/* Keep trying to contact the WINS server periodically. This allows
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us to work correctly if the WINS server is down temporarily when
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we want to delete the name. */
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/* Reset the number of attempts to zero and double the interval between
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retries. Max out at 5 minutes. */
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rrec->repeat_count = 3;
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rrec->repeat_interval *= 2;
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if(rrec->repeat_interval > (5 * 60))
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rrec->repeat_interval = (5 * 60);
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rrec->repeat_time = time(NULL) + rrec->repeat_interval;
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DEBUG(5,("release_name_timeout_response: increasing WINS timeout to %d seconds.\n",
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rrec->repeat_interval));
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return; /* Don't remove the response record. */
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}
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}
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DEBUG(5,("release_name_timeout_response: %s in releasing name %s on subnet %s.\n",
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success ? "success" : "failure", namestr(question_name), subrec->subnet_name));
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if(success && rrec->success_fn)
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{
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if(rrec->success_fn)
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(*rrec->success_fn)(subrec, rrec->userdata, question_name, released_ip);
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standard_success_release( subrec, rrec->userdata, question_name, released_ip);
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}
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else
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{
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/* We have no standard_fail_release - maybe we should add one ? */
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if( rrec->fail_fn)
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(*rrec->fail_fn)(subrec, rrec, question_name);
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}
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remove_response_record(subrec, rrec);
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}
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/****************************************************************************
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Try and release one of our names.
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****************************************************************************/
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BOOL release_name(struct subnet_record *subrec, struct name_record *namerec,
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release_name_success_function success_fn,
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release_name_fail_function fail_fn,
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struct userdata_struct *userdata)
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{
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int i;
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/* Ensure it's a SELF name, and in the ACTIVE state. */
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if((namerec->source != SELF_NAME) || !NAME_IS_ACTIVE(namerec))
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{
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DEBUG(0,("release_name: Cannot release name %s from subnet %s. Source was %d \n",
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namestr(&namerec->name), subrec->subnet_name, namerec->source));
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return True;
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}
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/* Set the name into the deregistering state. */
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namerec->nb_flags |= NB_DEREG;
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/*
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* Go through and release the name for all known ip addresses.
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* Only call the success/fail function on the last one (it should
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* only be done once).
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*/
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for( i = 0; i < namerec->num_ips; i++)
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{
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if(queue_release_name( subrec,
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release_name_response,
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release_name_timeout_response,
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(i == (namerec->num_ips - 1)) ? success_fn : NULL,
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(i == (namerec->num_ips - 1)) ? fail_fn : NULL,
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(i == (namerec->num_ips - 1)) ? userdata : NULL,
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&namerec->name,
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namerec->nb_flags,
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namerec->ip[i]) == NULL)
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{
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DEBUG(0,("release_name: Failed to send packet trying to release name %s IP %s\n",
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namestr(&namerec->name), inet_ntoa(namerec->ip[i]) ));
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return True;
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}
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}
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return False;
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}
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