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added created and tridge comments on first revision first kick-off in
revision history.
lkcl
(This used to be commit 70d3d3bbf0)
84 lines
3.1 KiB
Plaintext
84 lines
3.1 KiB
Plaintext
/*
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Unix SMB/Netbios documentation.
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Version 0.0
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Copyright (C) Luke Leighton Andrew Tridgell 1996
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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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Document name: namequery.doc
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Revision History:
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0.0 - 02jul96 : lkcl@pires.co.uk
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created
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*/
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this module contains non-threaded versions of name status and name
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query functions. if a multi-threaded nmbd was to be written, these
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functions would be the starting point.
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at the moment, the expected response queueing system is used to
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replace these functions without needing to multi-thread nmbd.
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these functions are used in smbclient and nmblookup at present to
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avoid having the vast quantities of complex and unused code needed
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to support even a simple name query (or providing stubs for the
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unused side of these functions).
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there is a down-side to these functions, which is all microsoft's
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fault. microsoft machines always always reply to queries on the
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priveleged ports, rather than following the usual tcp/ip mechanism
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of replying on the client's port (the exception to this i am led
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to believe is windows nt 3.50).
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as a result of this, in order to receive a response to a name
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query from a microsoft machine, we must be able to listen on
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the priveleged netbios name server ports. this is simply not
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possible with some versions of unix, unless you have root access.
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it is also not possible if you run smbclient or nmblookup on an
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interface that already has been claimed by the netbios name server
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daemon nmbd.
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all in all, i wish that microsoft would fix this.
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a solution does exist: nmbd _does_ actually reply on the client's
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port, so if smbclient and nmblookup were to use nmbd as a proxy
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forwarder of queries (or to use samba's WINS capabilities) then
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a query could be made without needing access to the priveleged
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ports. in order to do this properly, samba must implement secured
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netbios name server functionality (see rfc1001.txt 15.1.6).
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(lkcl 01aug96: samba now supports secured name registration)
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/*************************************************************************
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name_query()
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*************************************************************************/
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/*************************************************************************
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name_status()
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*************************************************************************/
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/*************************************************************************
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_interpret_node_status()
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*************************************************************************/
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this is a older version of interpret_node_status().
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