openssl: removed USERDATA_IN_PWD_CALLBACK kludge

Code for OpenSSL 0.9.4 serves no purpose anymore!

lib/vtls/openssl.c

@@ -83,12 +83,6 @@
 #error "OPENSSL_VERSION_NUMBER not defined"
 #endif
 
-#if OPENSSL_VERSION_NUMBER >= 0x00904100L
-#define HAVE_USERDATA_IN_PWD_CALLBACK 1
-#else
-#undef HAVE_USERDATA_IN_PWD_CALLBACK
-#endif
-
 #if OPENSSL_VERSION_NUMBER >= 0x00907001L && !defined(OPENSSL_IS_BORINGSSL)
 /* ENGINE_load_private_key() takes four arguments */
 #define HAVE_ENGINE_LOAD_FOUR_ARGS
@@ -154,18 +148,8 @@
  */
 #define RAND_LOAD_LENGTH 1024
 
-#ifndef HAVE_USERDATA_IN_PWD_CALLBACK
-static char global_passwd[64];
-#endif
-
-static int passwd_callback(char *buf, int num, int encrypting
-#ifdef HAVE_USERDATA_IN_PWD_CALLBACK
-                           /* This was introduced in 0.9.4, we can set this
-                              using SSL_CTX_set_default_passwd_cb_userdata()
-                              */
-                           , void *global_passwd
-#endif
-                           )
+static int passwd_callback(char *buf, int num, int encrypting,
+                           void *global_passwd)
 {
   DEBUGASSERT(0 == encrypting);
 
@@ -370,23 +354,9 @@ int cert_stuff(struct connectdata *conn,
     int cert_done = 0;
 
     if(data->set.str[STRING_KEY_PASSWD]) {
-#ifndef HAVE_USERDATA_IN_PWD_CALLBACK
-      /*
-       * If password has been given, we store that in the global
-       * area (*shudder*) for a while:
-       */
-      size_t len = strlen(data->set.str[STRING_KEY_PASSWD]);
-      if(len < sizeof(global_passwd))
-        memcpy(global_passwd, data->set.str[STRING_KEY_PASSWD], len+1);
-      else
-        global_passwd[0] = '\0';
-#else
-      /*
-       * We set the password in the callback userdata
-       */
+      /* set the password in the callback userdata */
       SSL_CTX_set_default_passwd_cb_userdata(ctx,
                                              data->set.str[STRING_KEY_PASSWD]);
-#endif
       /* Set passwd callback: */
       SSL_CTX_set_default_passwd_cb(ctx, passwd_callback);
     }
@@ -672,10 +642,6 @@ int cert_stuff(struct connectdata *conn,
       failf(data, "Private key does not match the certificate public key");
       return 0;
     }
-#ifndef HAVE_USERDATA_IN_PWD_CALLBACK
-    /* erase it now */
-    memset(global_passwd, 0, sizeof(global_passwd));
-#endif
   }
   return 1;
 }