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Naresh Jain's Random Thoughts on Software Development and Adventure Sports
     
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OS X Yosemite 10.10 + cURL 7.37.1 – CA Certificate Issue & curl_ssl_verifypeer Flag

If you are using Opauth-Twitter and suddenly you find that the Twitter OAuth is failing on OS X Yosemite, then it could be because  of the CA certificate issue.

In OS X Yosemite 10.10, they switched cURL’s version from 7.30.0 to 7.37.1 [curl 7.37.1 (x86_64-apple-darwin14.0) libcurl/7.37.1 SecureTransport zlib/1.2.5] and since then cURL always tries to verify the SSL certificate of the remote server.

In the previous versions, you could set curl_ssl_verifypeer to false and it would skip the verification. However from 7.37, if you set curl_ssl_verifypeer to false, it complains “SSL: CA certificate set, but certificate verification is disabled”.

Prior to version 0.60, tmhOAuth did not come bundled with the CA certificate and we used to get the following error:

SSL: can’t load CA certificate file <path>/vendor/opauth/Twitter/Vendor/tmhOAuth/cacert.pem

You can get the latest cacert.pem from here http://curl.haxx.se/ca/cacert.pem and saving it under /Vendor/tmhOAuth/cacert.pem (Latest version of tmbOAuth already has this in their repo.)

And then we need to set the $defaults (Optional parameters) curl_ssl_verifypeer to true in TwitterStrategy.php on line 48.

P.S: Turning off curl_ssl_verifypeer is actually a bad security move. It can make your server vulnerable to man-in-the-middle attack.


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