How to create file on network share from ASP.NET

[Andre]

Hi,

I have ASP.NET application running on standalone (not part of the domain)
Windows 2003. I use forms authentication for my application. The problem I
have is that I need to create and read files on Windows domain network shared
drives and also on shared via Samba Unix drives, which is equivalent to
writing/reading to the workgroup computer. Please point, if possible, to
detailed step by step description of what needs to be done. Thank you.

Regards,

[Kevin Spencer]

Hi Andre,

You can certainly use the System.IO classes to create files on a network
drive in the same way that you would create them on a local machine drive.
You can use a UNC path if you wish, or a mapped drive. The rules are the
same. The only differences would be:

1. Security: Use an Active Directory domain account with the proper
permissions. Use impersonation if necessary.
2. Unix drives: You may have some issues with the files themselves,
especially if they are text files. Carriage returns are different on Unix
systems. The system may be using ASCII instead of Unicode text encoding as
well.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:2C******** *************** ***********@mic rosoft.com...

Hi,

I have ASP.NET application running on standalone (not part of the domain)
Windows 2003. I use forms authentication for my application. The problem I
have is that I need to create and read files on Windows domain network
shared
drives and also on shared via Samba Unix drives, which is equivalent to
writing/reading to the workgroup computer. Please point, if possible, to
detailed step by step description of what needs to be done. Thank you.

Regards,

[Andre]

Hi Kevin,

My problem is that I don't understand how impersanation can help me. My web
server (means any accounts on it) does not permissions to read/write to
shared directories. Administrators of Unix and Windows domain created for me
appropriate accounts for access to shares - means on Unix was created user
asp with password asp which can access shared folder. From Windows Explorer
on my PC I can connect to this shared folder using provided username and
password. But this username and password are from remote box not the local
one, which means that LogonUser will not work for me as it can be used only
to login to local computer (at least that is what documentation says).

Could you please help with the issue that I need to login to another box
using another box'es account and not the local one?

Thanks a lot.
"Kevin Spencer" wrote:

Hi Andre,

You can certainly use the System.IO classes to create files on a network
drive in the same way that you would create them on a local machine drive.
You can use a UNC path if you wish, or a mapped drive. The rules are the
same. The only differences would be:

1. Security: Use an Active Directory domain account with the proper
permissions. Use impersonation if necessary.
2. Unix drives: You may have some issues with the files themselves,
especially if they are text files. Carriage returns are different on Unix
systems. The system may be using ASCII instead of Unicode text encoding as
well.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:2C******** *************** ***********@mic rosoft.com...

Hi,

I have ASP.NET application running on standalone (not part of the domain)
Windows 2003. I use forms authentication for my application. The problem I
have is that I need to create and read files on Windows domain network
shared
drives and also on shared via Samba Unix drives, which is equivalent to
writing/reading to the workgroup computer. Please point, if possible, to
detailed step by step description of what needs to be done. Thank you.

Regards,

[Juan T. Llibre]

Hi, Andre.

re:

Could you please help with the issue that I need to login to
another box using another box's account and not the local one?
<identity impersonate="tr ue" name="domain\us er" password="pwd"/>

should allow you to run ASP.NET while impersonating the
domain account which has permissions to read/write the other box.

For that, of course, both the other box and your box
need to be members of the same domain.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:50******** *************** ***********@mic rosoft.com... Hi Kevin,

My problem is that I don't understand how impersanation can help me. My web
server (means any accounts on it) does not permissions to read/write to
shared directories. Administrators of Unix and Windows domain created for me
appropriate accounts for access to shares - means on Unix was created user
asp with password asp which can access shared folder. From Windows Explorer
on my PC I can connect to this shared folder using provided username and
password. But this username and password are from remote box not the local
one, which means that LogonUser will not work for me as it can be used only
to login to local computer (at least that is what documentation says).

Could you please help with the issue that I need to login to another box
using another box'es account and not the local one?

Thanks a lot. "Kevin Spencer" wrote:

Hi Andre,

You can certainly use the System.IO classes to create files on a network
drive in the same way that you would create them on a local machine drive.
You can use a UNC path if you wish, or a mapped drive. The rules are the
same. The only differences would be:

1. Security: Use an Active Directory domain account with the proper
permissions. Use impersonation if necessary.
2. Unix drives: You may have some issues with the files themselves,
especially if they are text files. Carriage returns are different on Unix
systems. The system may be using ASCII instead of Unicode text encoding as
well.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:2C******** *************** ***********@mic rosoft.com...

> Hi,
>
> I have ASP.NET application running on standalone (not part of the domain)
> Windows 2003. I use forms authentication for my application. The problem I
> have is that I need to create and read files on Windows domain network
> shared
> drives and also on shared via Samba Unix drives, which is equivalent to
> writing/reading to the workgroup computer. Please point, if possible, to
> detailed step by step description of what needs to be done. Thank you.
>
> Regards,

[Juan T. Llibre]

Andre,

You might also want to acquire access programmaticall y.

Read this article :
http://www.netomatix.com/ImpersonateUser.aspx
and download and study the sample code provided.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:50******** *************** ***********@mic rosoft.com...

Hi Kevin,

My problem is that I don't understand how impersanation can help me. My web
server (means any accounts on it) does not permissions to read/write to
shared directories. Administrators of Unix and Windows domain created for me
appropriate accounts for access to shares - means on Unix was created user
asp with password asp which can access shared folder. From Windows Explorer
on my PC I can connect to this shared folder using provided username and
password. But this username and password are from remote box not the local
one, which means that LogonUser will not work for me as it can be used only
to login to local computer (at least that is what documentation says).

Could you please help with the issue that I need to login to another box
using another box'es account and not the local one?

Thanks a lot.
"Kevin Spencer" wrote:

Hi Andre,

You can certainly use the System.IO classes to create files on a network
drive in the same way that you would create them on a local machine drive.
You can use a UNC path if you wish, or a mapped drive. The rules are the
same. The only differences would be:

1. Security: Use an Active Directory domain account with the proper
permissions. Use impersonation if necessary.
2. Unix drives: You may have some issues with the files themselves,
especially if they are text files. Carriage returns are different on Unix
systems. The system may be using ASCII instead of Unicode text encoding as
well.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:2C******** *************** ***********@mic rosoft.com...

> Hi,
>
> I have ASP.NET application running on standalone (not part of the domain)
> Windows 2003. I use forms authentication for my application. The problem I
> have is that I need to create and read files on Windows domain network
> shared
> drives and also on shared via Samba Unix drives, which is equivalent to
> writing/reading to the workgroup computer. Please point, if possible, to
> detailed step by step description of what needs to be done. Thank you.
>
> Regards,
>

[Andre]

Hi Juan,

Thank you for your reply, but my point is exactly that both computers ARE
NOT members of the same domain - one is standalone Win2003 and another is
external domain member and I can not put both onto the same domain. Is there
any other way to do it?

Thank you.

You might also want to acquire access programmaticall y.

Read this article :
http://www.netomatix.com/ImpersonateUser.aspx
and download and study the sample code provided.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:50******** *************** ***********@mic rosoft.com...

Hi Kevin,

My problem is that I don't understand how impersanation can help me. My web
server (means any accounts on it) does not permissions to read/write to
shared directories. Administrators of Unix and Windows domain created for me
appropriate accounts for access to shares - means on Unix was created user
asp with password asp which can access shared folder. From Windows Explorer
on my PC I can connect to this shared folder using provided username and
password. But this username and password are from remote box not the local
one, which means that LogonUser will not work for me as it can be used only
to login to local computer (at least that is what documentation says).

Could you please help with the issue that I need to login to another box
using another box'es account and not the local one?

Thanks a lot.
"Kevin Spencer" wrote:

Hi Andre,

You can certainly use the System.IO classes to create files on a network
drive in the same way that you would create them on a local machine drive.
You can use a UNC path if you wish, or a mapped drive. The rules are the
same. The only differences would be:

1. Security: Use an Active Directory domain account with the proper
permissions. Use impersonation if necessary.
2. Unix drives: You may have some issues with the files themselves,
especially if they are text files. Carriage returns are different on Unix
systems. The system may be using ASCII instead of Unicode text encoding as
well.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:2C******** *************** ***********@mic rosoft.com...
> Hi,
>
> I have ASP.NET application running on standalone (not part of the domain)
> Windows 2003. I use forms authentication for my application. The problem I
> have is that I need to create and read files on Windows domain network
> shared
> drives and also on shared via Samba Unix drives, which is equivalent to
> writing/reading to the workgroup computer. Please point, if possible, to
> detailed step by step description of what needs to be done. Thank you.
>
> Regards,
>

[Juan T. Llibre]

re:

both computers ARE NOT members of the same domain
I think that, if that's the case, you're out of luck.

You might want to talk to your network admin
about joining your machine to the network.

What would prevent that ?
( If you need to access the shared drive's file system... )

My question to you is : how do you have *shared drives*
if the machines are not on the same network ?

That sounds a bit counter-intuitive to me.


Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:FC******** *************** ***********@mic rosoft.com... Hi Juan,

Thank you for your reply, but my point is exactly that both computers ARE
NOT members of the same domain - one is standalone Win2003 and another is
external domain member and I can not put both onto the same domain. Is there
any other way to do it?

Thank you.

You might also want to acquire access programmaticall y.

Read this article :
http://www.netomatix.com/ImpersonateUser.aspx
and download and study the sample code provided.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:50******** *************** ***********@mic rosoft.com...

> Hi Kevin,
>
> My problem is that I don't understand how impersanation can help me. My web
> server (means any accounts on it) does not permissions to read/write to
> shared directories. Administrators of Unix and Windows domain created for me
> appropriate accounts for access to shares - means on Unix was created user
> asp with password asp which can access shared folder. From Windows Explorer
> on my PC I can connect to this shared folder using provided username and
> password. But this username and password are from remote box not the local
> one, which means that LogonUser will not work for me as it can be used only
> to login to local computer (at least that is what documentation says).
>
> Could you please help with the issue that I need to login to another box
> using another box'es account and not the local one?
>
> Thanks a lot.
> "Kevin Spencer" wrote:
>
>> Hi Andre,
>>
>> You can certainly use the System.IO classes to create files on a network
>> drive in the same way that you would create them on a local machine drive.
>> You can use a UNC path if you wish, or a mapped drive. The rules are the
>> same. The only differences would be:
>>
>> 1. Security: Use an Active Directory domain account with the proper
>> permissions. Use impersonation if necessary.
>> 2. Unix drives: You may have some issues with the files themselves,
>> especially if they are text files. Carriage returns are different on Unix
>> systems. The system may be using ASCII instead of Unicode text encoding as
>> well.
>>
>> --
>> HTH,
>>
>> Kevin Spencer
>> Microsoft MVP
>> ..Net Developer
>> The sun never sets on
>> the Kingdom of Heaven
>>
>> "Andre" <An***@discussi ons.microsoft.c om> wrote in message
>> news:2C******** *************** ***********@mic rosoft.com...
>> > Hi,
>> >
>> > I have ASP.NET application running on standalone (not part of the domain)
>> > Windows 2003. I use forms authentication for my application. The problem I
>> > have is that I need to create and read files on Windows domain network
>> > shared
>> > drives and also on shared via Samba Unix drives, which is equivalent to
>> > writing/reading to the workgroup computer. Please point, if possible, to
>> > detailed step by step description of what needs to be done. Thank you.
>> >
>> > Regards,

[Kevin Spencer]

Hi Andre,

You can certainly impersonate a member of any domain, as long as you supply
that user's credentials. It's simply a matter of identifying the domain as
well as the user.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
The sun never sets on
the Kingdom of Heaven

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:FC******** *************** ***********@mic rosoft.com...

Hi Juan,

Thank you for your reply, but my point is exactly that both computers ARE
NOT members of the same domain - one is standalone Win2003 and another is
external domain member and I can not put both onto the same domain. Is
there
any other way to do it?

Thank you.

You might also want to acquire access programmaticall y.

Read this article :
http://www.netomatix.com/ImpersonateUser.aspx
and download and study the sample code provided.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"Andre" <An***@discussi ons.microsoft.c om> wrote in message
news:50******** *************** ***********@mic rosoft.com...

> Hi Kevin,
>
> My problem is that I don't understand how impersanation can help me. My
> web
> server (means any accounts on it) does not permissions to read/write to
> shared directories. Administrators of Unix and Windows domain created
> for me
> appropriate accounts for access to shares - means on Unix was created
> user
> asp with password asp which can access shared folder. From Windows
> Explorer
> on my PC I can connect to this shared folder using provided username
> and
> password. But this username and password are from remote box not the
> local
> one, which means that LogonUser will not work for me as it can be used
> only
> to login to local computer (at least that is what documentation says).
>
> Could you please help with the issue that I need to login to another
> box
> using another box'es account and not the local one?
>
> Thanks a lot.
> "Kevin Spencer" wrote:
>
>> Hi Andre,
>>
>> You can certainly use the System.IO classes to create files on a
>> network
>> drive in the same way that you would create them on a local machine
>> drive.
>> You can use a UNC path if you wish, or a mapped drive. The rules are
>> the
>> same. The only differences would be:
>>
>> 1. Security: Use an Active Directory domain account with the proper
>> permissions. Use impersonation if necessary.
>> 2. Unix drives: You may have some issues with the files themselves,
>> especially if they are text files. Carriage returns are different on
>> Unix
>> systems. The system may be using ASCII instead of Unicode text
>> encoding as
>> well.
>>
>> --
>> HTH,
>>
>> Kevin Spencer
>> Microsoft MVP
>> ..Net Developer
>> The sun never sets on
>> the Kingdom of Heaven
>>
>> "Andre" <An***@discussi ons.microsoft.c om> wrote in message
>> news:2C******** *************** ***********@mic rosoft.com...
>> > Hi,
>> >
>> > I have ASP.NET application running on standalone (not part of the
>> > domain)
>> > Windows 2003. I use forms authentication for my application. The
>> > problem I
>> > have is that I need to create and read files on Windows domain
>> > network
>> > shared
>> > drives and also on shared via Samba Unix drives, which is equivalent
>> > to
>> > writing/reading to the workgroup computer. Please point, if
>> > possible, to
>> > detailed step by step description of what needs to be done. Thank
>> > you.
>> >
>> > Regards,
>> >
>>
>>
>>

[Scott Allen]

One technique I've used in the past is to use mirrored account. Set up
an account on both machines - same username, same password. Then
ASP.NET can impersonate the account on the server and be authenticated
/ authorized on the remote machine.

--
Scott
http://www.OdeToCode.com/blogs/scott/
On Thu, 21 Jul 2005 06:35:05 -0700, "Andre"
<An***@discussi ons.microsoft.c om> wrote:

Hi Juan,

Thank you for your reply, but my point is exactly that both computers ARE
NOT members of the same domain - one is standalone Win2003 and another is
external domain member and I can not put both onto the same domain. Is there
any other way to do it?

Thank you.

[Andre]

Guys,

Thank you very much for your answers/suggestions.

Scott,
Does you suggestion mean that Windows will always try to login using current
(impersonated) credentials first? What if my impersonated credentials are
domain related, is it going to be a problem? Sorry for dumb questions I am
not an expert in Windows security.

Kevin,
Does you suggestion mean, that it is domain, which webserver belongs to, you
are talking about? Can impersonte user of another domain (I have domain name,
username and password for that domain, but server is not part of that domain)?

Juan,
There are various reasons (not of a technical matter) which prevent our
web-server to be joined with the other domain. Machines are on the same
physical network, but webserver is maintained by one company and domain by
another. So all I have from the domain managed box is the domain name, share
name, username and password on THAT domain and I need to create export files
using those credentials. I can do this from Windows GUI - access that share
using provided credentials so it is should not a problem via .Net too.

I am currently looking at using WNetAddConnecti on2 function to map external
drives locally and write onto local drives. Is it a good idea?

Thanks & Regards,

Andre.
"Scott Allen" wrote:

One technique I've used in the past is to use mirrored account. Set up
an account on both machines - same username, same password. Then
ASP.NET can impersonate the account on the server and be authenticated
/ authorized on the remote machine.

--
Scott
http://www.OdeToCode.com/blogs/scott/
On Thu, 21 Jul 2005 06:35:05 -0700, "Andre"
<An***@discussi ons.microsoft.c om> wrote:

Hi Juan,

Thank you for your reply, but my point is exactly that both computers ARE
NOT members of the same domain - one is standalone Win2003 and another is
external domain member and I can not put both onto the same domain. Is there
any other way to do it?

Thank you.