Forwarding POST body into renderer after a cross-site transfer.

content/browser/frame_host/navigation_entry_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/navigation_entry_impl.h"
 
 #include <stddef.h>
 
 #include <queue>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "components/url_formatter/url_formatter.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/navigation_params.h"
 #include "content/common/page_state_serialization.h"
+#include "content/common/resource_request_body.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/url_constants.h"
 #include "ui/gfx/text_elider.h"
 
 using base::UTF16ToUTF8;
 
 namespace content {
 
@@ skipping 531 matching lines @@
   // ResetForCommit: should_replace_entry_
   copy->redirect_chain_ = redirect_chain_;
   // ResetForCommit: should_clear_history_list_
   // ResetForCommit: frame_tree_node_id_
   // ResetForCommit: intent_received_timestamp_
   copy->extra_data_ = extra_data_;
 
   return copy;
 }
 
+scoped_refptr<ResourceRequestBody>
+NavigationEntryImpl::ConstructBodyFromBrowserInitiatedPostData() const {
+  scoped_refptr<ResourceRequestBody> browser_initiated_post_body;
+  if (GetHasPostData()) {
+    if (const base::RefCountedMemory* memory = GetBrowserInitiatedPostData()) {
+      browser_initiated_post_body = new ResourceRequestBody();
+      browser_initiated_post_body->AppendBytes(memory->front_as<char>(),
+                                               memory->size());
+    }
+  }
+  return browser_initiated_post_body;
+}
+
 CommonNavigationParams NavigationEntryImpl::ConstructCommonNavigationParams(
     const FrameNavigationEntry& frame_entry,
+    bool force_post_method,
     const GURL& dest_url,
     const Referrer& dest_referrer,
     FrameMsg_Navigate_Type::Value navigation_type,
     LoFiState lofi_state,
     const base::TimeTicks& navigation_start) const {
   FrameMsg_UILoadMetricsReportType::Value report_type =
       FrameMsg_UILoadMetricsReportType::NO_REPORT;
   base::TimeTicks ui_timestamp = base::TimeTicks();
 #if defined(OS_ANDROID)
   if (!intent_received_timestamp().is_null())
     report_type = FrameMsg_UILoadMetricsReportType::REPORT_INTENT;
   ui_timestamp = intent_received_timestamp();
 #endif
 
   std::string method;
 
   // TODO(clamy): Consult the FrameNavigationEntry in all modes that use
   // subframe navigation entries.
   if (IsBrowserSideNavigationEnabled())
     method = frame_entry.method();
   else
-    method = GetHasPostData() ? "POST" : "GET";
+    method = (force_post_method || GetHasPostData()) ? "POST" : "GET";
 
   return CommonNavigationParams(
       dest_url, dest_referrer, GetTransitionType(), navigation_type,
       !IsViewSourceMode(), should_replace_entry(), ui_timestamp, report_type,
       GetBaseURLForDataURL(), GetHistoryURLForDataURL(), lofi_state,
       navigation_start, method);
 }
 
-StartNavigationParams NavigationEntryImpl::ConstructStartNavigationParams()
-    const {
-  std::vector<unsigned char> browser_initiated_post_data;
-  if (GetBrowserInitiatedPostData()) {
-    browser_initiated_post_data.assign(
-        GetBrowserInitiatedPostData()->front(),
-        GetBrowserInitiatedPostData()->front() +
-            GetBrowserInitiatedPostData()->size());
-  }
-
-  return StartNavigationParams(extra_headers(), browser_initiated_post_data,
+StartNavigationParams NavigationEntryImpl::ConstructStartNavigationParams(
+    const scoped_refptr<ResourceRequestBody>& post_body) const {
+  return StartNavigationParams(
+      extra_headers(),
+      post_body ? post_body : ConstructBodyFromBrowserInitiatedPostData(),
 #if defined(OS_ANDROID)
-                               has_user_gesture(),
+      has_user_gesture(),
 #endif
-                               transferred_global_request_id().child_id,
-                               transferred_global_request_id().request_id);
+      transferred_global_request_id().child_id,
+      transferred_global_request_id().request_id);
 }
 
 RequestNavigationParams NavigationEntryImpl::ConstructRequestNavigationParams(
     const FrameNavigationEntry& frame_entry,
     bool is_same_document_history_load,
     bool has_committed_real_load,
     bool intended_as_new_entry,
     int pending_history_list_offset,
     int current_history_list_offset,
     int current_history_list_length) const {
@@ skipping 139 matching lines @@
       return node;
 
     // Enqueue any children and keep looking.
     for (auto& child : node->children)
       work_queue.push(child);
   }
   return nullptr;
 }
 
 }  // namespace content