Using LAPI via a Web Service

However I have been unable to connect to LAPI from the Web Service as the user running the desktop application. Each connection made connects as the user running the Application Pool the Web Service is configured to use.

For example, Joe has the appropriate permissions to connect and add documents to Livelink whilst Fred does not have permissions to connect to Livelink. Joe is running the application on his desktop and the Application Pool used by the Web Service is running as Fred. Each time the desktop application calls the Web Service to add a document for Joe the Web Service cannot connect to LAPI as it attempts to make the connection for Fred (Access Denied error). Therefore Joe cannot add any documents to Livelink.

Is there any way to connect to Livelink in the Web Service via LAPI as Joe so that the document can be added to Livelink? At the point of connection within the Web Service I know Joe's user account name but not his password.

Find more posts tagged with

Comments

Alex Webb

Forgot to mention that I'm am using Visual Basic to write the desktop application and Web Service.

Appu_Nair

Perhaps you should look at lapi impersonation.

To impersonate a user in livelink the main livelink user needsto have SA privs or you should use the user Admin. Most companies will notallow you to use Admin though.

Once a lapi session is established either thru SSO or Port callyou should then be able to impersonate any user in livelink.

I have done SSO /IIS programming (long time back) in livelinknon-tunneled and I have posted C# samples at this website.

http://communities.opentext.com/communities/livelink.exe?func=ll&objId=7973190&objAction=WikiViewsee the file called TUNNELED LAPI DIR SVCS

AFAIR I never had to put passwords anywhere so long as the lapiuser was authenticated to a domain which the livelink dir svcs authenticatesagainst

Simply put if thru the livelink gui ending in llisapi.dll orlivelink.exe took that lapi user in without challenging the lapi code executingon that computer

Would work as well.

I beleive I wrote this piece as well when wanting to try outVB.NET and livelink so INITIATE A WORKFLOW WITH ATTACHMENTS PACKAGE

So that may also be helpful if you want to conver C# to VB.net

Unfortunately I do not know web services that well but see ifthese help.

Also in KB search for the tool Lapi Test Connection utility.thatshould be your best help when developing something with LAPI.You really can’tget far without

Getting that.

Good luck.

From: eLink Entry: LAPIForum [mailto:lapi@elinkkc.opentext.com]
Sent: Friday, September 03, 2010 10:54 AM
To: eLink Recipient
Subject: Using LAPI via a Web Service

Using LAPI via a Web Service

Posted by alex.webb@miller-insurance.com (Webb, Alex) On 2010/09/03 11:52

For example, Joe has the appropriate permissions to connect and add documents to Livelink whilst Fred does not have permissions to connect to Livelink. Joe is running the application on his desktop and the Application Pool used by the Web Service is running as Fred. Each time the desktop application calls the Web Service to add a document for Joe the Web Service cannot connect to LAPI as it atte! mpts to make the connection for Fred (Access Denied error). Therefore Joe cannot add any documents to Livelink.

[To post a comment, use the normal reply function]
Forum:	LAPI Forum
Livelink Server:	knowledge-wlweb01

Pierre_Nocera

Are you using WCF ? Is your web service self-hosted or IIS hosted ? Which binding are you using, basicHttpBinding with MTOM in streamed mode ?

Pierre

De: eLink Entry: LAPI Forum [mailto:lapi@elinkkc.opentext.com]
Date: ven. 03/09/2010 17:53
À: eLink Recipient
Objet : Using LAPI via a Web Service

Using LAPI via a Web Service

Posted by alex.webb@miller-insurance.com (Webb, Alex) On 2010/09/03 11:52

I am trying to develop a Web Service that uses LAPI to add documents from a Desktop application into Livelink. The desktop application will be run as a user logged onto a PC authenticated to a domain. The Web service will be setup to use integrated security so that it runs in the context of the user.However I have been unable to connect to LAPI from the Web Service as the user running the desktop application. Each connection made connects as the user running the Application Pool the Web Service is configured to use.For example, Joe has the appropriate permissions to connect and add documents to Livelink whilst Fred does not have permissions to connect to Livelink. Joe is running the application on his desktop and the Application Pool used by the Web Service is running as Fred. Each time the desktop application calls the Web Service to add a document for Joe the Web Service cannot connect to LAPI as it atte! mpts to make the connection for Fred (Access Denied error). Therefore Joe cannot add any documents to Livelink.Is there any way to connect to Livelink in the Web Service via LAPI as Joe so that the document can be added to Livelink? At the point of connection within the Web Service I know Joe's user account name but not his password.

[To post a comment, use the normal reply function]
Forum:	LAPI Forum
Livelink Server:	knowledge-wlweb01

Alex Webb

We are using a standard ASP.NET Web Service and not WCF and the Web Service is hosted in IIS 6.0 on Windows Server 2003.

Thanks,

Alex

Quoted Pierre Nocera (pnocera) on 2010/09/06 10:04:

Are you using WCF ? Is your web service self-hosted or IIS hosted ? Which binding are you using, basicHttpBinding with MTOM in streamed mode ?

Pierre_Nocera

In this case I guess you'll have to follow Appu's advice and impersonate the LLSession.

Impersonation on the webservice can be done with WCF, see :

"How To – Use Delegation for Flowing the Original Caller Credentials to the Back End in WCF Calling from Windows Forms" at

http://wcfsecurityguide.codeplex.com/wikipage?title=How%20To%20-%20Use%20Delegation%20for%20Flowing%20the%20Original%20Caller%20Credentials%20to%20Back-end%20in%20WCF%20Calling%20from%20Windows%20Forms&referringTitle=Home

Pierre

De: eLink Entry: LAPI Forum [mailto:lapi@elinkkc.opentext.com]
Date: lun. 06/09/2010 11:05
?: eLink Recipient
Objet : RE Using LAPI via a Web Service

RE Using LAPI via a Web Service

Posted by alex.webb@miller-insurance.com (Webb, Alex) On 2010/09/06 05:04

We are using a standard ASP.NET Web Service and not WCF and the Web Service is hosted in IIS 6.0 on Windows Server 2003.Thanks,AlexQuoted Pierre Nocera (pnocera) on 2010/09/06 10:04:

Are you using WCF ? Is your web service self-hosted or IIS hosted ? Which binding are you using, basicHttpBinding with MTOM in streamed mode ?

[To post a comment, use the normal reply function]
Topic:	Using LAPI via a Web Service
Forum:	LAPI Forum
Livelink Server:	knowledge-wlweb01

Alex Webb

Thanks for the responses Pierre and Appu .

I have decided to use the Impersonate User method, as you have both suggested, to enable me to get this working as this seems the only way. Would have been nice to not have to use Impersonate user and for LAPI to pick up the user running the Web Service but that does not seem possible.

Thanks,

Alex