[dart:io] Namespaces for file IO

runtime/bin/security_context.cc

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #if !defined(DART_IO_SECURE_SOCKET_DISABLED)
 
 #include "bin/security_context.h"
 
 #include <openssl/bio.h>
 #include <openssl/err.h>
@@ skipping 305 matching lines @@
   }
 
   SecureSocketUtils::CheckStatus(status, "TlsException",
                                  "Failure in setClientAuthoritiesBytes");
 }
 
 void SSLCertContext::LoadRootCertFile(const char* file) {
   if (SSL_LOG_STATUS) {
     Log::Print("Looking for trusted roots in %s\n", file);
   }
-  if (!File::Exists(file)) {
+  if (!File::Exists(NULL, file)) {
     SecureSocketUtils::ThrowIOException(-1, "TlsException",
                                         "Failed to find root cert file", NULL);
   }
   int status = SSL_CTX_load_verify_locations(context(), file, NULL);
   SecureSocketUtils::CheckStatus(status, "TlsException",
                                  "Failure trusting builtin roots");
   if (SSL_LOG_STATUS) {
     Log::Print("Trusting roots from: %s\n", file);
   }
 }
@@ skipping 25 matching lines @@
   // If there is an error here, it must be the error indicating that we are done
   // reading PEM certificates.
   ASSERT((ERR_peek_error() == 0) || SecureSocketUtils::NoPEMStartLine());
   ERR_clear_error();
 }
 
 void SSLCertContext::LoadRootCertCache(const char* cache) {
   if (SSL_LOG_STATUS) {
     Log::Print("Looking for trusted roots in %s\n", cache);
   }
-  if (Directory::Exists(cache) != Directory::EXISTS) {
+  if (Directory::Exists(NULL, cache) != Directory::EXISTS) {
     SecureSocketUtils::ThrowIOException(-1, "TlsException",
                                         "Failed to find root cert cache", NULL);
   }
   int status = SSL_CTX_load_verify_locations(context(), NULL, cache);
   SecureSocketUtils::CheckStatus(status, "TlsException",
                                  "Failure trusting builtin roots");
   if (SSL_LOG_STATUS) {
     Log::Print("Trusting roots from: %s\n", cache);
   }
 }
@@ skipping 427 matching lines @@
   } else {
     Dart_ThrowException(DartUtils::NewDartArgumentError(
         "Non-boolean is_server argument passed to SetAlpnProtocols"));
   }
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // !defined(DART_IO_SECURE_SOCKET_DISABLED)