Getting an ADFS Token for a Shibboleth SP

get_adfs_saml_request.xml

<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope"
            xmlns:a="http://www.w3.org/2005/08/addressing"
            xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
    <s:Header>
        <a:Action s:mustUnderstand="1">http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Issue</a:Action>
        <a:To s:mustUnderstand="1">ADFS_IDP_ADDRESS/adfs/services/trust/13/UsernameMixed</a:To>
        <o:Security s:mustUnderstand="1" xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" >
            <o:UsernameToken u:Id="uuid-6a13a244-dac6-42c1-84c5-cbb345b0c4c4-1">
                <o:Username>ADFS_USERNAME</o:Username>
                <o:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">ADFS_PASSWORD</o:Password>
            </o:UsernameToken>
        </o:Security>
    </s:Header>
    <s:Body>
        <trust:RequestSecurityToken xmlns:trust="http://docs.oasis-open.org/ws-sx/ws-trust/200512">
            <wsp:AppliesTo xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy">
                <a:EndpointReference>
                    <a:Address>SP_ENTITYID</a:Address>
                </a:EndpointReference>
            </wsp:AppliesTo>
            <trust:KeyType>http://docs.oasis-open.org/ws-sx/ws-trust/200512/Bearer</trust:KeyType>
            <trust:RequestType>http://docs.oasis-open.org/ws-sx/ws-trust/200512/Issue</trust:RequestType>
            <trust:TokenType>urn:oasis:names:tc:SAML:2.0:assertion</trust:TokenType>
        </trust:RequestSecurityToken>
    </s:Body>
</s:Envelope>

get_adfs_saml_token.sh

#!/bin/bash

# ensure that the xmllint tool is installed
which xmllint 2>&1 > /dev/null || (apt-get update && apt-get install -y libxml2-utils)

# edit these before running this script
ADFS_IDP_ADDRESS='https://my_adfs_idp_address'
ADFS_USERNAME='myusername@domain.local'
ADFS_PASSWORD='mysecret'
SP_ENTITYID='https://my_sp_address/shibboleth'

sed -i "s|ADFS_IDP_ADDRESS|${ADFS_IDP_ADDRESS}|" get_adfs_saml_request.xml
sed -i "s|ADFS_USERNAME|${ADFS_USERNAME}|" get_adfs_saml_request.xml
sed -i "s|ADFS_PASSWORD|${ADFS_PASSWORD}|" get_adfs_saml_request.xml
sed -i "s|SP_ENTITYID|${SP_ENTITYID}|" get_adfs_saml_request.xml

curl ${ADFS_IDP_ADDRESS}/adfs/services/trust/13/usernamemixed \
     --data @get_adfs_saml_request.xml \
     -H "Content-Type: application/soap+xml" \
     --verbose -o "get_adfs_saml_response.xml"

xmllint --format get_adfs_saml_response.xml