Invalid or no certificate authority found, using bundled information

Question

I\'m getting started with the facebook API. I downloaded the example code from facebook, configured with my appID and secret keys.

Answer 1

get the latest plugin from http://wordpress.org/extend/plugins/facebook-feed-grabber/ and replace the old chain certificate with new one

Answer 2

I've checked the server config and everything seems fine. However I've seen a few other posts on the internet where users have fixed the issue by editing the following lines in

"base_facebook.php"

/** * Default options for curl. */

public static $CURL_OPTS = array(
CURLOPT_CONNECTTIMEOUT => 10,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_TIMEOUT => 60,
CURLOPT_USERAGENT => 'facebook-php-3.2',
CURLOPT_SSL_VERIFYPEER => false, (ADDED THIS LINE)
);

I've tested it and this now works, and it successfully posts to the Facebook page.

Cheers!

Mudassar Ali

Answer 3

Disable the SSL security feature

Though I don't recognize that exact error message, SSL problems when communicating with Facebook via the PHP SDK (and thus Curl) are common. Have you tried doing something like this?

Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false;

This will disable the SSL "Verify Peer" security feature so that it stops generating the error message.

Answer 4

Set the option in CURL to point to your certificate file

This option will tell CURL that your fb_ca_chain_bundle.crt file is in the same folder as your script.

Facebook::$CURL_OPTS[CURLOPT_CAINFO] = getcwd().'/fb_ca_chain_bundle.crt';

In base_facebook.php line 844 curl_exec fails and the error is generated. Then the script sets:

curl_setopt($ch, CURLOPT_CAINFO,
              dirname(__FILE__) . '/fb_ca_chain_bundle.crt');

and tries again.

The Second time all is well, there is no problem it just makes a mess of your log

DO NOT use

Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false;

Or a man-in-middle will be able to intercept your call!