[mapguide-internals] Problem with Authorization/Authentication of mapguide clients (not browser) in mapagent CGI [SOLVED] HOW TO DEBUG the WebTier

[Tom Fukushima]

Hi Developers,

I've added a link to the main page of the trac wiki.  You will find it the developer information section.

I spent 5 minutes to put some info in the page so it is rough; please feel free to rework the page completely.

Cheers and thanks for taking the time to do this,
Tom



-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of UV
Sent: Tuesday, December 09, 2008 11:36 PM
To: MapGuide Internals Mail List
Subject: Re: [mapguide-internals] Problem with Authorization/Authentication of mapguide clients (not browser) in mapagent CGI [SOLVED] HOW TO DEBUG the WebTier

great timing.
I just realized that I should debug the webtier to understand my failed
ajaxviewer request better.
thanks!

So its dllhost.exe instead of inetinfo.exe....
I can also imagine that this is also depending somehow on the isolation
settings for the web application in IIS5.1

so this can be added to a wiki now but where? I think someone accredited
needs to create the structure first...

Cheers,
UV



Trevor Wekel wrote:
> Hi UV,
>
> Jason is correct.  IIS spins up worker processes to handle the ISAPI
> mapagent.  I don't have a MapGuide installing sitting in front of me right
> now but I think the process is called dllhost.exe and it should be owned by
> the I_USR_(machinename) account which IIS sets up.  If you attach to this
> process, you should be able to debug the mapagent.
>
> Thanks,
> Trevor
>
> -----Original Message-----
> From: mapguide-internals-bounces at lists.osgeo.org
> [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of UV
> Sent: Tuesday, December 09, 2008 8:09 PM
> To: MapGuide Internals Mail List
> Subject: Re: [mapguide-internals] Problem with Authorization/Authentication
> of mapguide clients (not browser) in mapagent CGI [SOLVED] HOW TO DEBUG the
> WebTier
>
> As often simple solutions for initially hard problems ;-)
>
> This should go into a mapguide developer wiki which I have not found yet.
> The /Best Practices Wiki /is client side only AFAICS.....
>
>
> *How To Debug the WebTier using CGI MapAgent*
>
>    1. Build the debug version of
>           CgiAgent = mapagent.exe
>    2. Replace the standard version in the web application
>    3. Debug the CGI Agent:
>       Set the DebugPause timeout property in  the webconfig.ini of
>       mapguide webapp
>       to a time long enough to connect the debugger to the mapagent
>       process in Visual Studio.
>       This process shows up after the request is made and has  a pause
>       at after startup.
>       So if you put a breakpoint after the pause (CgiAgent.cpp line ~150)
>       you can catch it by attaching to the WebAgent.exe process within
>       the pause time.
>
>         But beware:/
>         When the clients connect to the webserver the first time they do
>         not authenticate.
>         Only when the server replies with an Authentication request they do.
>         So the first time you catch the Mapagent with the debugger it
>         will never connect to the server.
>         You have to catch the mapagent a second time after the
>         authentication failure which will include the authentication
>         credentials and do the connection! /
>
> *How To Debug the WebTier using ISAPI MapAgent???
>
> *
>
>    1. Build the debug version of
>           IsapiAgent = isapi_MapAgent.dll
>    2. Replace the standard version in the web application
>    3. Attaching the visual studio debugger to inetinfo.exe does not
>       enable the breakpoint in isapi_Mapagent.dll
>       Anyone ideas on this?
>
>
>
>
>
>
> UV wrote:
>
>> Hi all,
>>
>> I need some information about how authentication is implemented between
>> the mapguide clients and the mapagent CGI.
>>
>> I did some debugging of the webagent which showed that no conditions to
>> authorize the access are meet regarding the environment variables passed
>> in via the HTTP request from the mapguide client applications.
>>
>> I am able to access the server via a browser using mapadmin and request
>> some data.
>> The first authentication also fails but causes the browser to prompt me
>> with a login window.
>> The subsequent request then has the HTTP_AUTHORIZATION variable set
>> which permits the request to be passed on the the mapguide server.
>>
>> When I try to access the mapagent with maestro or mapguide studio this
>> does NOT HAPPEN
>> and the failed authentication simply fails the login of the client.
>>
>> Can someone shed some light on this please?
>> Which values are supposed to be passed from the mapguide clients?
>>
>> Thanks
>> UV
>>
>> _______________________________________________
>> mapguide-internals mailing list
>> mapguide-internals at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>>
>>
>>
>
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>

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