Invoking a service in EMML that requires HTTP Basic Auth

Hi John,

I was wondering if the username and password can be encrypted when they are passed to the webservice. Can you please elaborate on this.

Regards,
Nimish

Nimish,

1) If a webservice supports https endpoint, you can register the service using that endpoint. The Invoke statement will now use SSL encryption to communicate with the registered service, thus encrypting username/password during communication.

2) Also, note that username/password may also be discretely stored as user or global parameter. They can subsequently be retrieved in EMML using $user or $ global prefix i.e.

hth

 John, Thanks for the code snippet.

This has piqued my interest. I am off to look at some of the other macro videos because I am wondering how it might be possible to set this up so that it takes a WSDL as input and wraps the httpBasicAuth header around the WSDL to make a call.

Since we use BasicAuth frequently it would mean I could use wires to link a WSDL service with a BasicAuth wrapper function and add the appropriate userid and password as inputs.

 This is my first ever attempt at a macro thanks to Americo's samples. 

I am attempting to wrap the HTTP BasicAuth header around a WSDL.

I am not sure it is working but may be the code will be enough to help somebody finish the job. After all I am not a developer - but know enough hacking to be dangerous! :)

At some point I may need to read some documentation!

<!--

ABSTRACT: This Mashup is an attempt to add HTTP BasicAuth authentication to a 

  WSDL call using Emml macros

@Author: Mark Scrimshire - inspired by Americo Savinon and John Crupi

@date: 10/30/08

-->

<mashup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.jackbe.com/2008-03-01/EMMLSchema../src/schemas/EMMLSpec.xsd"

xmlns="http://www.jackbe.com/2008-03-01/EMMLSchema"

xmlns:xhtml="http://www.w3.org/1999/xhtml"

xmlns:macro = "http://www.jackbe.com/2008-03-01/EMMLMacro"

    name="MacrosSample">

    <emml-meta name="author">Mark Scrimshire(mscrimshire@gmail.com) aka ekivemark</emml-meta>

    <variable name="mydoc" type="document">

        <items>

            <item>foo1</item>

            <item>foo2</item>

            <item>foo3</item>

        </items>

</variable>

<macro name="addHttpBasicAuth">

<input name="xmlSource" type="document" />

        <input name="user" type="string"></input>

        <input name="password" type="string"></input>

        <output name="result" type="document" />

        <presto-meta name="macrotype">user</presto-meta>

        <presto-meta name="help">

            <description>This macro adds userid and password to the WSDL as a http header in a selected xml file.</description>

            <parameters>

                <parameter name="xmlSource">XML Source that will be used for this macro</parameter>

                <parameter name="userid">This is the userid for Basic Authentication</parameter>

                <parameter name="password">This is the password for Basic Authentication</parameter>

            </parameters>

        </presto-meta>

        <presto-meta name="type"  reference="xmlSource">datapath</presto-meta>

      <variables>

             <variable name="user" type="string" default="OpenID-Rocks" />

             <variable name="password" type="string" default="OAuth-Rocks-Too" />

        </variables>

        <constructor outputvariable="requestheader">

         <header>

             <httpBasicAuth>

                        <user>{$user}</user>

                        <password>{$password}</password>

                </httpBasicAuth>

          </header>

      </constructor>

        <assign fromvariable="$xmlSource" header="requestheader" outputvariable="result"> </assign>

</macro>

<macro:addHttpBasicAuth xmlSource="$mydoc" userid="JackBe" password="Mashups" />

<display message="xmlSource = " expr="$xmlSource" />

    <display message="Result = " expr="$result" />

</mashup>