Question

IIS, DCOM, Security policy and pulling hairs

Asked by: ranauk

I have an application (with a gui) which is supposed to run as out-of-process from IIS. When initially I coded the application in VB, I could launch it by using server.createObject - if the application was not running, it would load up and stay LOADED...

I have DCOM set to interactive users, and permission to everyone (initially to make life easier)..

after coded in delphi, it does load the application, but it doesn't stay running.. so every page starts the application - runs the method - and the application closes..

then as another approach, I initiated the object in global.asa like

<OBJECT RUNAT=Server SCOPE=Application ID=myName PROGID="myName.Handler"></OBJECT>

now, this works fine ... AS LONG A USER HAS LOGGED INTO THE DESKTOP.. if not, I get the following error msg...

------------------------------------------------------------------------
Active Server Pages error '8002802b'

Create object failed

?

An error occurred while creating object 'myName'. error '8000401a'

The server process could not be started because the configured identity is incorrect. Check the username and password
------------------------------------------------------------------------

personally, I don't want to use this global.asa method, cause as it loads through IIS, to reload the application I need to unload the site and relaunch it... so I thought of launcing the application automatically, and get IIS to use it...

----
with dcom security set to interactive user, I can launch the application (as the user I am logged in as).. and IIS can use it....

set this is launching user, in asp I get

-------------------------
Server object error 'ASP 0177 : 80080005'

Server.CreateObject Failed
-------------------------

so I figure, I can create a service, which in 5 second interval will run the application... and as I have mutex working, only one copy of the application can be launched - so safely assume it will running almost all the time... even if it crashes, it will start up again...

after creating the lauching service, if I set it as LocalSystem (with or without interact)... whenever it tries to launch the application, it fails down saying the application has generated error and will be closed down...

change the dcom identity to launching user - it gets started by service, IIS can ride it... but DARN it doesn't show the tray icon

FindWindow('Progman', nil) always returns 0

-------------------

any ideas... I changed the service from local system to an user, and by launching it from service - no tray icon.

------------ REQUIREMENTS

either

a) on how can launch the application from asp page but not have it automatically close

or

b) somehow make sure it launches as soon as windows start, but have the gui pop up when there is a taskbar...





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Asked On
2003-06-06 at 07:57:13ID20639479
Tags

dcom

,

8000401a

,

iis

Topic

Delphi Programming

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: Workshop_AlexPosted on 2003-06-06 at 11:50:46ID: 8668705

Your mistaken about how COM works. The webpage creates the object thus starts the server executable. The object is used for a moment and then it's freed. And because it's freed and no more objects are still active, the executable is also closed.

So, start the application during start-up of the machine. That way the executable will stay alive all the time.

And the ASP error might be related to the fact that the IUSR_<computername> is used as user account for the COM object. And this user account is very, very limited in what it can access.

If you're using Windows 2000 or XP (or 2003 server) then think about the use of COM+.

 

by: ranaukPosted on 2003-06-07 at 06:23:42ID: 8672400

Hi Alex,

if that is the case, then how come the equivalent application written in VB stays active????

I am running win2000... can you eloborate on your point.. the application is created using delphi asp object.

 

by: CleanupPingPosted on 2003-09-08 at 21:39:56ID: 9315357

ranauk:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1
EXPERTS:
Post your closing recommendations!  No comment means you don't care.

20120131-EE-VQP-002

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