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#!/bin/bash
set -e
 
action_pattern='action="([^"]+)"'
ticket_pattern='Location: .*\?ticket=(ST-[-A-Za-z0-9_.=]+)'
 
get_ticket() {
    login_response=$(curl --fail --silent -c /tmp/cookies http://localhost:8080/auth/realms/master/protocol/cas/login?service=http://localhost)
    if [[ !($login_response =~ $action_pattern) ]] ; then
        echo "Could not parse login form in response"
        echo $login_response
        exit 1
    fi
 
    login_url=${BASH_REMATCH[1]//&/&}
    redirect_response=$(curl --fail --silent -D - -b /tmp/cookies --data 'username=admin&password=admin' "$login_url")
    if [[ !($redirect_response =~ $ticket_pattern) ]] ; then
        echo "No service ticket found in response"
        echo $redirect_response
        exit 1
    fi
 
    ticket=${BASH_REMATCH[1]}
    echo $ticket
}
 
get_ticket
curl --fail --silent "http://localhost:8080/auth/realms/master/protocol/cas/validate?service=http://localhost&ticket=$ticket"
echo
 
get_ticket
curl --fail --silent "http://localhost:8080/auth/realms/master/protocol/cas/serviceValidate?service=http://localhost&format=XML&ticket=$ticket"
echo
 
get_ticket
curl --fail --silent "http://localhost:8080/auth/realms/master/protocol/cas/serviceValidate?service=http://localhost&format=JSON&ticket=$ticket"
echo
 
get_ticket
curl --fail --silent "http://localhost:8080/auth/realms/master/protocol/cas/p3/serviceValidate?service=http://localhost&format=JSON&ticket=$ticket"
echo