Revert "Disable the buggy RSA parser by default."

net/ssl/openssl_ssl_util.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/ssl/openssl_ssl_util.h"
 
 #include <errno.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 155 matching lines @@
     case SSL_ERROR_WANT_READ:
     case SSL_ERROR_WANT_WRITE:
       return ERR_IO_PENDING;
     case SSL_ERROR_SYSCALL:
       LOG(ERROR) << "OpenSSL SYSCALL error, earliest error code in "
                     "error queue: " << ERR_peek_error() << ", errno: "
                  << errno;
       return ERR_FAILED;
     case SSL_ERROR_SSL:
       // Walk down the error stack to find an SSL or net error.
-      while (true) {
-        OpenSSLErrorInfo error_info;
-        error_info.error_code =
-            ERR_get_error_line(&error_info.file, &error_info.line);
-        if (error_info.error_code == 0) {
-          // Map errors to ERR_SSL_PROTOCOL_ERROR by default, reporting the most
-          // recent error in |*out_error_info|.
-          return ERR_SSL_PROTOCOL_ERROR;
-        }
-
-        *out_error_info = error_info;
-        if (ERR_GET_LIB(error_info.error_code) == ERR_LIB_SSL) {
-          return MapOpenSSLErrorSSL(error_info.error_code);
-        }
-        if (ERR_GET_LIB(error_info.error_code) == OpenSSLNetErrorLib()) {
+      uint32_t error_code;
+      const char* file;
+      int line;
+      do {
+        error_code = ERR_get_error_line(&file, &line);
+        if (ERR_GET_LIB(error_code) == ERR_LIB_SSL) {
+          out_error_info->error_code = error_code;
+          out_error_info->file = file;
+          out_error_info->line = line;
+          return MapOpenSSLErrorSSL(error_code);
+        } else if (ERR_GET_LIB(error_code) == OpenSSLNetErrorLib()) {
+          out_error_info->error_code = error_code;
+          out_error_info->file = file;
+          out_error_info->line = line;
           // Net error codes are negative but encoded in OpenSSL as positive
           // numbers.
-          return -ERR_GET_REASON(error_info.error_code);
+          return -ERR_GET_REASON(error_code);
         }
-      }
+      } while (error_code != 0);
+      return ERR_FAILED;
     default:
       // TODO(joth): Implement full mapping.
       LOG(WARNING) << "Unknown OpenSSL error " << err;
       return ERR_SSL_PROTOCOL_ERROR;
   }
 }
 
 NetLogParametersCallback CreateNetLogOpenSSLErrorCallback(
     int net_error,
     int ssl_error,
@@ skipping 12 matching lines @@
       return SSL_CONNECTION_VERSION_TLS1_2;
     case TLS1_3_VERSION:
       return SSL_CONNECTION_VERSION_TLS1_3;
     default:
       NOTREACHED();
       return SSL_CONNECTION_VERSION_UNKNOWN;
   }
 }
 
 }  // namespace net