Is there a way to get the SSL certificate information from LWP::UserAgent? Specifically I am looking for the expiration date. The information has to have been retrieved during the SSL handshake so I am wondering if there is any way I get at it. Even the raw cert would be helpful.

This is part of a project to monitor the ssl offloading on haproxy servers and an F5 BigIP. The testing done by XYMon properly considers a 400 or 500 status from the upstream servers to be a failure which leaves the accuracy of the monitoring at the mercy of less than ideal code in the upstream pool.

With LWP::UserAgent I can apply my own filters to give me better reporting of how the offload devices are actually performing.

Not doing anything fancy, just a straightforward request

  # get site headers if it is reachable

  # create the agent
  my $ua = new LWP::UserAgent;
  my $url = "https://" . $site;

  # try to connect
  my $resp = $ua->get($url);

  # we don't care if the response code is a 200, 300, or 400 but 500 i
+s still a
  # bad thing

  if ($resp->code >= 500) {
    $resp_line = $resp->status_line ? $resp->status_line : "Unable to 
+connect to " .  $site;

    $resp_headers = "";
    $status_color = "red";
  } else {
    $resp_line = $resp->protocol . " " . $resp->status_line;
    $resp_headers = $resp->headers_as_string;

    chomp($resp_headers);
  }

  # calculate Elapsed Time
  my $et = tv_interval ($t0);

  my $time = localtime;

  my $httpout = sprintf $HTTPFMT, $site, "http", $status_color, $time,
+ $url, $resp_line, $resp_headers, $et;

  # send output to xymon
  send_2_xymon($XYMON_SVR, $XYMON_PORT, $httpout);

[download]

If worse comes to worse, I can get it calling openssl and parsing the output. It would just be kind of nice to not have to make a second connection to the site.

In reply to Getting an SSL Certificate Expiration Date by enemyofthestate

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