[xmlsec] transform question

[hungpq at volny.cz]

Hi Aleksey,
is possible to insert further transform during executing as I
did? If not, what is a correct way
to perform some cannonicalization included in some transform?

thanks,
P.Q.Hung

P.S. Method int strTransformExecute(...) is executing function of
str transform klass
- used by default  popBin/pushBin/popXml/pushXml methods.

----- Original Message ----- 
From: <hungpq at volny.cz>
To: <xmlsec at aleksey.com>
Sent: Tuesday, April 13, 2004 3:23 PM
Subject: [xmlsec] transform question


> Hi all,
> can some of you tell me what 's wrong I have done?
> I am implementing STR transform for web services security. This
> transform does something, then perform canonicalization at the
> end.
> When running the program failed after performin c14n transform,
> file "c14n.c", line 273, ret = xmlOutputBufferClose(buf).
>
> I am using xmlSeclib version 1.2.1, windows platform.
>
> Thank you in advance,
> P.Q.Hung
>
> The following is my code, that enables canonicalization after
str > transform. ----------------
> int strTransformExecute(xmlSecTransformPtr transform, int last,
> xmlSecTransformCtxPtr transformCtx){
>
>     // connect canonicalization
>     xmlSecTransformPtr canTransform =
> xmlSecTransformCreate(xmlSecTransformExclC14NId);
>
>     int ret;
>     if(!transform->next){
>         ret = xmlSecTransformCtxAppend(transformCtx,
> canTransform);         if(ret) return -1;
>     }
>     else{
>         xmlSecTransformPtr canNext = transform->next;
>         ret = xmlSecTransformConnect(transform, canTransform,
> transformCtx);         if(!ret) ret =
> xmlSecTransformConnect(canTransform, canNext, transformCtx);
>         if(ret) return -1;
>     }
>
>     // perform transform
>     ....
> }
>
> ----------
>
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