Re: OpenSSL 1.1 breaks configure and more

Thanks for this effort.

>  static BIO_METHOD *
>  my_BIO_s_socket(void)
>  {
> -    if (!my_bio_initialized)
> +    if (!my_bio_methods)
>      {
> -        memcpy(&my_bio_methods, BIO_s_socket(), sizeof(BIO_METHOD));
> -        my_bio_methods.bread = my_sock_read;
> -        my_bio_methods.bwrite = my_sock_write;
> -        my_bio_initialized = true;
> +        BIO_METHOD *biom = (BIO_METHOD *) BIO_s_socket();
> +#if SSLEAY_VERSION_NUMBER >= 0x10100000L
> +        my_bio_methods = BIO_meth_new(BIO_TYPE_SOCKET, "pgsocket");
> +        BIO_meth_set_write(my_bio_methods, my_sock_write);
> +        BIO_meth_set_read(my_bio_methods, my_sock_read);
> +        BIO_meth_set_gets(my_bio_methods, BIO_meth_get_gets(biom));
> +        BIO_meth_set_ctrl(my_bio_methods, BIO_meth_get_ctrl(biom));
> +        BIO_meth_set_create(my_bio_methods, BIO_meth_get_create(biom));
> +        BIO_meth_set_destroy(my_bio_methods, BIO_meth_get_destroy(biom));
> +        BIO_meth_set_callback_ctrl(my_bio_methods, BIO_meth_get_callback_ctrl(biom));
> +#else
> +        my_bio_methods = malloc(sizeof(BIO_METHOD));
> +        memcpy(my_bio_methods, biom, sizeof(BIO_METHOD));
> +        my_bio_methods->bread = my_sock_read;
> +        my_bio_methods->bwrite = my_sock_write;
> +#endif

Generally, version number tests sprinkled all over the place are not
terribly nice.  I think it would be better to get configure to define a
symbol like HAVE_BIO_METH_NEW.  Not sure about the other hunks in this
patch; perhaps HAVE_BIO_SET_DATA, and #define both those macros if not.

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
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