Re: 1.0.2 to 1.1 migration problem with verify_callback()

Remy Lebeau <remy@xxxxxxxxxxxxxxxxxx> · Wed, 7 Aug 2019 18:27:23 -0700

    In my verify callback (for 1.0.2, mind you), I use
      X509_STORE_CTX_get_app_data(ctx) to get the SSL* pointer. 
      X509_STORE_CTX_get_app_data(ctx) is a macro in OpenSSL's
      "x509_vfy.h" header file that maps to X509_STORE_CTX_get_ex_data(ctx,0) (why doesn't it use
      SSL_get_ex_data_X509_STORE_CTX_idx() instead of 0?).

    Remy Lebeau
Lebeau Software
    On 8/5/2019 7:40 AM, Matt Caswell
      wrote:

      From within your callback you can do this to get hold of the SSL object:

SSL *s = (SSL *)X509_STORE_CTX_get_ex_data(ctx,
SSL_get_ex_data_X509_STORE_CTX_idx());

And then this to get hold of the hostname requested:

const char *hostname = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);