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<h1>22. Virtuoso Functions Guide - dsig_template_ext</h1>
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<div id="text">
<h2>dsig_template_ext</h2>
<div class="refpurpose">Generates a Digital signature template based on a XML document.</div>
<div class="funcsynopsis">
<span class="funcdef">varchar <span class="function">dsig_template_ext</span>
</span>
(<span class="paramdef">in <span class="parameter">xdoc</span> any</span>,
<span class="paramdef">in <span class="parameter">tmpl</span> varchar</span>,
<span class="paramdef">in <span class="parameter">wss_ver</span> any</span>,
<span class="paramdef">in <span class="parameter">ns-n</span> varchar</span>,
<span class="paramdef">in <span class="parameter">elm-n</span> varchar</span>,
<span class="paramdef">in <span class="parameter">...</span> varchar</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>
The function is used to generate dynamically a digital
signature template containing references to be signed.
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">xdoc – </span>
input XML document
</div>
<div class="refsect2">
<span class="refsect2title">tmpl – </span>
a string containing base XML template
</div>
<div class="refsect2">
<span class="refsect2title">wss_ver – </span>
vector containing WS-Security and WS-Utility version URIs
</div>
<div class="refsect2">
<span class="refsect2title">ns-n – </span>
namespace to match
</div>
<div class="refsect2">
<span class="refsect2title">elm-n – </span>
element name to match
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>
On success the function will return a string containing
a XML template suitable to pass to the <span class="computeroutput">xenc_encrypt</span>.
The elements matching listed in <span class="computeroutput">elm-n</span> from namespace URIs in <span class="computeroutput">ns-n</span> and having Id attribute will be included in the XML signature reference list.
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_dsig_template_ext" />
<div class="example">
<div class="exampletitle">Making a XML signature template</div>
<p />
<div>
<pre class="screen">
create procedure XENC_TEMPLATE (in body varchar, in key_name varchar)
{
declare tmpl, algo varchar;
declare ns any;
-- OASIS WS-Security extensions
ns := vector (
'wsse', 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd',
'wsu', 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd'
);
algo := xenc_get_key_algo (key_name);
if (algo is null)
return NULL;
-- base XML template
tmpl := sprintf ('<?xml version="1.0" encoding="UTF-8"?>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#" >
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
<SignatureMethod Algorithm="%s" />
</SignedInfo>
<SignatureValue></SignatureValue>
<KeyInfo>
<KeyName>%s</KeyName>
</KeyInfo>
</Signature>', algo, key_name);
return dsig_template_ext (xtree_doc (body), tmpl, ns,
'http://schemas.xmlsoap.org/soap/envelope/', 'Body',
-- WS-Addressing
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'Action',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'From',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'To',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'MessageID',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'ReplyTo',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'FaultTo',
'http://schemas.xmlsoap.org/ws/2004/03/addressing', 'RelatesTo'
);
}
;
</pre>
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<div class="refsect1title">See Also</div>
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