[jcifs] No Access Exception Question

Yibo Dong ydong at mail.arc.nasa.gov
Fri Jul 12 08:48:19 EST 2002 

Hi, Mike,

I just tested jcifs on an NT machine and got the same Invalid Parameter
error. It looks like that we can tentatively eliminate the possibility
of a platform specific error. I also tried the property file with domain
name being blank, with domain name entry being completely absent, it
didn't make any difference. Is domain a required parameter? The
comments and examples in SmbFile.java don't seem to say so.

Other than the following smb url

smb://domain;username:password@server/IPC$/pipe/name

what other setups for the server that I should go through, such as DNS,
WINS, etc., and specify them in the property file? Any other
configurations I haven't mentioned that I need to examine? In the example
jcifs.prp, the resolveOrder(=WINS) seems to be commented out by the
semicolon, is it true?

Thanks,

-Yibo


-----Original Message-----
From: Allen, Michael B (RSCH) [mailto:Michael_B_Allen at ml.com]
Sent: Tuesday, July 09, 2002 3:30 PM
To: 'Yibo Dong'
Cc: Brian Johnson; jcifs at samba.org; ahitzeman at mail.arc.nasa.gov;
robert at intrinsyx.com; bmortimer at mail.arc.nasa.gov
Subject: RE: [jcifs] No Access Exception Question




> -----Original Message-----
> From:	Yibo Dong [SMTP:ydong at mail.arc.nasa.gov]
> Sent:	Tuesday, July 09, 2002 5:27 PM
> To:	Michael B. Allen
> Cc:	Brian Johnson; jcifs at samba.org; ahitzeman at mail.arc.nasa.gov;
robert at intrinsyx.com; bmortimer at mail.arc.nasa.gov
> Subject:	RE: [jcifs] No Access Exception Question
>
> Hi, Mike,
>
> Thanks for checking it for me. No, I am not running on a laptop without
> an ethernet card attached. ydong is a desktop machine on our LAN.
>
> I am getting a different error now. Here is what I used:
>
> Server:
>
> createnp \\.\pipe\name
>
> Client:
>
> java CallNamedPipe -Djcifs.properties=jcifs.prp inFile.txt outFile.txt
>
> Jcifs.prp Content:
>
> domain=                  /* left blank since we don't have one */
>
	I think this will make your domain an empty string. Not sure what will
happen in
	that scenario.

> username=ydong
> password=MyPassword
> ;wins=143.232.153.176    /* IP address for ydong */
> wins=143.232.153.176     /* ditto */
> ;log=ALL
> ;resolveOrder=WINS
> ;soTimeout=3000
>
> Error I Am Getting:
>
> jcifs.smb.SmbException: Invalid parameter 	at
> jcifs.smb.SmbTransport.sendTransaction(SmbTransport.java:628) 	at
> jcifs.smb.SmbSession.sendTransaction(SmbSession.java:123) 	at
> jcifs.smb.SmbTree.sendTransaction(SmbTree.java:65) 	at
> jcifs.smb.SmbFile.sendTransaction(SmbFile.java:456) 	at
>
jcifs.smb.TransactNamedPipeOutputStream.write(TransactNamedPipeOutputStream.
> java:62) 	at CallNamedPipe.main(CallNamedPipe.java:50) Exception in thread
> "main"
>
> It's not clear to me which parameter is invalid.
>
	Wierd. Could be a strange interaction with Win2K. What happens if you
simply do not
	specify a domain. So you do not authenticate against a domain or the target
machine
	is not a member of a domain?

> Interestingly, if I re-run the client at this point, I will get an
> timeout error saying YDONG/143.232.153.176 is not responding, but if
> I try to re-run createnp, I will get a 231 (pipe busy) error. I have to
> reboot the machine in order for createnp to work again.
>
	That's just crappy handling of named pipes on Windoze. If the named pipe
using program
	exits without releasing the handle it can become a zombie. You don't have
to reboot
	though. Just go into Control Panel > Services and restart the Server
Service.

	Someone just installed an XP machine nearby. I'll try it with that when I
get a chance. Try
	it against NT 4.0 just so you can rule out a configuration/usage issue.

> Thanks again for helping me.
>
> -Yibo
>
> -----Original Message-----
> From: Michael B. Allen [mailto:miallen at eskimo.com]
> Sent: Tuesday, July 09, 2002 12:49 PM
> To: Yibo Dong
> Cc: bmortimer at mail.arc.nasa.gov; robert at intrinsyx.com;
> ahitzeman at mail.arc.nasa.gov; jcifs at samba.org
> Subject: Re: [jcifs] No Access Exception Question
>
>
> On Tue, 9 Jul 2002 11:22:45 -0700
> "Yibo Dong" <ydong at mail.arc.nasa.gov> wrote:
>
> >
> > Hi, Mike,
> >
> > Thanks for the quick response.
> >
> > I have tried all the possible combinations of createnp and client
> > calls based on the instructions on
> > http://jcifs.samba.org/src/docs/pipes.html
> > but still got rather consistent Access Denied errors, albeit at slight
> > different locations each time in
> > Jcifs.smb.SmbTransport.sendTransaction(SmbTransport.java) call. Please
see
> > the attached for all the test
> > details.
> >
> > My suspicion is that my configuration/setup for running those tests is
> > the culprit. But where?
>
> I  just  went through the CallNamedPipe example and it worked. You know
you
> will  need  to  supply appropriate authentication creadentials. It's
pretty
> standard  for  GUEST  to  be  disabled  these  days. If you run the
example
> without  them  you  indeed  get  AccessDenied (natrually). When you run
the
> callnp.exe example it works because it uses your creadentials from the
LSA.
> Try:
>
>   java CreateNamedPipe smb://ydong:mypass@host/IPC$/pipe/foo input output
>
> Or use -Djcifs.properties=jcifs.prp and make a jcifs.prp with
> username=ydong, password=mypass, ...etc.
>
> If this is not your problem then there might be a Win2K specific issue.
Are
> you using a Laptop without an ethernet cable attached?
>
> >
> > Any insights will be greatly appreciated.
> >
> > -Yibo
> >
> > P.S. I wonder if /P 0x5 you mentioned should have been /P 0x6?
>
> Right, /P 0x6.
>
> >
> >
> > -----Original Message-----
> > From: Michael B. Allen [mailto:miallen at eskimo.com]
> > Sent: Monday, July 08, 2002 11:22 AM
> > To: Yibo Dong
> > Cc: jcifs at samba.org
> > Subject: Re: [jcifs] No Access Exception Question
> >
> >
> > On Mon, 8 Jul 2002 10:01:53 -0700
> > "Yibo Dong" <ydong at mail.arc.nasa.gov> wrote:
> >
> > >
> > > Hi,
> > >
> > > I have downloaded your jcifs package and are using the following pair
in
> > > a Windows 2000 environment (machine name: ydong, domain name: not
used,
> > > group name: CDS) to test:
> > >
> > > createnp \\.\pipe\name
> > >
> > > CallNamedPipe smb://ydong/IPC$/PIPE/name c:\JCIFSTest\pipes\inFile.txt
> > > c:\JCIFSTest\pipes\outFile.txt
> > >
> > > The call "out.write( b, 0, n )" in CalledNamedPipe.java results in the
> > > following access exception:
> > >
> > > jcifs.smb.SmbAuthException: Access denied 	at
> > > jcifs.smb.SmbTransport.sendTransaction(SmbTransport.java:626) 	at
> > > jcifs.smb.SmbSession.sendTransaction(SmbSession.java:123) 	at
> > > jcifs.smb.SmbTree.sendTransaction(SmbTree.java:65) 	at
> > > jcifs.smb.SmbFile.sendTransaction(SmbFile.java:456) 	at
> > >
> >
>
jcifs.smb.TransactNamedPipeOutputStream.write(TransactNamedPipeOutputStream.
> > > java:62) 	at CallNamedPipe.main(CallNamedPipe.java:44) Exception in
> thread
> > > "main"
> >
> > With  the  CallNamedPipe  example  you  have  to  use the /P 0x5 flags
> with
> > creatnp. That might help. See this page for complete instructions on how
> to
> > run those examples:
> >
> >   http://jcifs.samba.org/src/docs/pipes.html
> >
> > Also,  just  a  note, the available() method of the InputStream returned
> by
> > SmbNamedPipe.getNamedPipeInputStream  is  not  implemented.  This  might
> be
> > necessary for certain types of I/O. It is very high on my todo list
> though.
> >
> > Mike
> >
> > --
> > http://www.eskimo.com/~miallen/c/jus.c
> >
>
>
> --
> http://www.eskimo.com/~miallen/c/jus.c
>
>

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