Configuring Jenkins with PowerShell

gistfile1.ps1

# Fill in the blanks
$UserName = ???
$JenkinsAPIToken = ???
$JENKINS_URL = ???
$JOB_URL = ???

# Create client with pre-emptive authentication
# see => http://www.hashemian.com/blog/2007/06/http-authorization-and-net-webrequest-webclient-classes.htm
$webClient = new-object System.Net.WebClient
$webclient.Headers.Add("Authorization","Basic "+
  [System.Convert]::ToBase64String(
  [System.Text.Encoding]::ASCII.GetBytes("$($UserName):$JenkinsAPIToken")))

# fetch CSRF token as authenticated user
# see => https://wiki.jenkins-ci.org/display/JENKINS/Remote+access+API
$crumbURL = $JENKINS_URL + "/crumbIssuer/api/xml"
$crumbs = [xml]$webClient.DownloadString($crumbURL)

# set the CSRF token in the headers
$webclient.Headers.Add($crumbs.defaultCrumbIssuer.crumbRequestField, $crumbs.defaultCrumbIssuer.crumb)

# GET the job configuration (you don't actually need the CSRF token for this
# but it's better to get that token once at the top in case you want to do multiple
# operations e.g. setting parameters on many jobs, in this script)
$configURL = $JOB_URL + "config.xml"
$config = [xml]$webClient.DownloadString($configURL)

# do whatever transformation you need to the XML

# POST back
# see => http://stackoverflow.com/questions/5401501/how-to-post-data-to-specific-url-using-webclient-in-c-sharp
try {
        $webClient.Encoding = [System.Text.Encoding]::UTF8
        $webclient.Headers.Add([System.Net.HttpRequestHeader]::ContentType,"application/xml")
        $webclient.UploadString($configURL, $config.OuterXml)
} 
finally ## reset headers for client re-use if you're processing many jobs
        ## (or .Dispose() the client if you're done)
{
      $webClient.Headers.Remove([System.Net.HttpRequestHeader]::ContentType)
}