win: fixes for Windows x64

util/net/http_transport_win.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/net/http_transport.h"
 
 #include <windows.h>
 #include <winhttp.h>
 
 #include "base/logging.h"
+#include "base/numerics/safe_conversions.h"
 #include "base/scoped_generic.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "util/net/http_body.h"
 #include "package.h"
 
 namespace crashpad {
 
 namespace {
 
@@ skipping 111 matching lines @@
                          0));
   if (!request.get()) {
     LogErrorWinHttpMessage("WinHttpOpenRequest");
     return false;
   }
 
   // Add headers to the request.
   for (const auto& pair : headers()) {
     std::wstring header_string =
         base::UTF8ToUTF16(pair.first) + L": " + base::UTF8ToUTF16(pair.second);
-    if (!WinHttpAddRequestHeaders(request.get(),
-                                  header_string.c_str(),
-                                  header_string.size(),
-                                  WINHTTP_ADDREQ_FLAG_ADD)) {
+    if (!WinHttpAddRequestHeaders(
+            request.get(),
+            header_string.c_str(),
+            base::checked_cast<DWORD>(header_string.size()),
+            WINHTTP_ADDREQ_FLAG_ADD)) {
       LogErrorWinHttpMessage("WinHttpAddRequestHeaders");
       return false;
     }
   }
 
   // We need the Content-Length up front, so buffer in memory. We should modify
   // the interface to not require this, and then use WinHttpWriteData after
   // WinHttpSendRequest.
   std::vector<uint8_t> post_data;
 
   // Write the body of a POST if any.
   const size_t kBufferSize = 4096;
   for (;;) {
     uint8_t buffer[kBufferSize];
     ssize_t bytes_to_write =
         body_stream()->GetBytesBuffer(buffer, sizeof(buffer));
     if (bytes_to_write == 0)
       break;
     post_data.insert(post_data.end(), buffer, buffer + bytes_to_write);
   }
 
   if (!WinHttpSendRequest(request.get(),
                           WINHTTP_NO_ADDITIONAL_HEADERS,
                           0,
                           &post_data[0],
-                          post_data.size(),
-                          post_data.size(),
+                          base::checked_cast<DWORD>(post_data.size()),
+                          base::checked_cast<DWORD>(post_data.size()),
                           0)) {
     LogErrorWinHttpMessage("WinHttpSendRequest");
     return false;
   }
 
   if (!WinHttpReceiveResponse(request.get(), nullptr)) {
     LogErrorWinHttpMessage("WinHttpReceiveResponse");
     return false;
   }
 
@@ skipping 40 matching lines @@
 }
 
 }  // namespace
 
 // static
 scoped_ptr<HTTPTransport> HTTPTransport::Create() {
   return scoped_ptr<HTTPTransportWin>(new HTTPTransportWin);
 }
 
 }  // namespace crashpad