Revert "crypto: use better memory BIO implementation"

This change shouldn't have landed in the stable branch. It's a feature,
not a bug fix.

This reverts commit 58f93ff.
This reverts commit 8c8ebe4.
This reverts commit ba0f7b8.
This reverts commit 21f3c5c.

node.gyp

@@ -110,7 +110,6 @@
         'src/node_buffer.h',
         'src/node_constants.h',
         'src/node_crypto.h',
-        'src/node_crypto_bio.h',
         'src/node_extensions.h',
         'src/node_file.h',
         'src/node_http_parser.h',
@@ -148,7 +147,7 @@
       'conditions': [
         [ 'node_use_openssl=="true"', {
           'defines': [ 'HAVE_OPENSSL=1' ],
-          'sources': [ 'src/node_crypto.cc', 'src/node_crypto_bio.cc' ],
+          'sources': [ 'src/node_crypto.cc' ],
           'conditions': [
             [ 'node_shared_openssl=="false"', {
               'dependencies': [ './deps/openssl/openssl.gyp:openssl' ],

src/node_crypto.cc

@@ -20,7 +20,6 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "node_crypto.h"
-#include "node_crypto_bio.h"
 #include "node_crypto_groups.h"
 #include "v8.h"
 
@@ -292,7 +291,7 @@ int SecureContext::NewSessionCallback(SSL* s, SSL_SESSION* sess) {
 // Takes a string or buffer and loads it into a BIO.
 // Caller responsible for BIO_free-ing the returned object.
 static BIO* LoadBIO (Handle<Value> v) {
-  BIO *bio = BIO_new(NodeBIO::GetMethod());
+  BIO *bio = BIO_new(BIO_s_mem());
   if (!bio) return NULL;
 
   HandleScope scope;
@@ -545,7 +544,7 @@ Handle<Value> SecureContext::AddRootCerts(const Arguments& args) {
     root_cert_store = X509_STORE_new();
 
     for (int i = 0; root_certs[i]; i++) {
-      BIO *bp = BIO_new(NodeBIO::GetMethod());
+      BIO *bp = BIO_new(BIO_s_mem());
 
       if (!BIO_write(bp, root_certs[i], strlen(root_certs[i]))) {
         BIO_free(bp);
@@ -1202,8 +1201,8 @@ Handle<Value> Connection::New(const Arguments& args) {
   bool is_server = args[1]->BooleanValue();
 
   p->ssl_ = SSL_new(sc->ctx_);
-  p->bio_read_ = BIO_new(NodeBIO::GetMethod());
-  p->bio_write_ = BIO_new(NodeBIO::GetMethod());
+  p->bio_read_ = BIO_new(BIO_s_mem());
+  p->bio_write_ = BIO_new(BIO_s_mem());
 
   SSL_set_app_data(p->ssl_, p);