Convert NaCl renderer-browser messages to mojo.

components/nacl/browser/nacl_host_message_filter.cc

Index: components/nacl/browser/nacl_host_message_filter.cc
diff --git a/components/nacl/browser/nacl_host_message_filter.cc b/components/nacl/browser/nacl_host_message_filter.cc
deleted file mode 100644
index c8d0ebfe06d350059b22169bdf4dbcfc9dc19cb3..0000000000000000000000000000000000000000
--- a/components/nacl/browser/nacl_host_message_filter.cc
+++ /dev/null
@@ -1,387 +0,0 @@
-// 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 "components/nacl/browser/nacl_host_message_filter.h"
-
-#include <stddef.h>
-#include <stdint.h>
-#include <utility>
-
-#include "base/sys_info.h"
-#include "build/build_config.h"
-#include "components/nacl/browser/bad_message.h"
-#include "components/nacl/browser/nacl_browser.h"
-#include "components/nacl/browser/nacl_file_host.h"
-#include "components/nacl/browser/nacl_process_host.h"
-#include "components/nacl/browser/pnacl_host.h"
-#include "components/nacl/common/nacl_host_messages.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/plugin_service.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/web_contents.h"
-#include "ipc/ipc_platform_file.h"
-#include "net/url_request/url_request_context.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "ppapi/shared_impl/ppapi_permissions.h"
-#include "url/gurl.h"
-
-namespace nacl {
-
-namespace {
-
-// The maximum number of resource file handles the browser process accepts. Use
-// 200 because ARC's nmf has ~128 resource files as of May 2015. This prevents
-// untrusted code filling the FD/handle table.
-const size_t kMaxPreOpenResourceFiles = 200;
-
-ppapi::PpapiPermissions GetNaClPermissions(
-    uint32_t permission_bits,
-    content::BrowserContext* browser_context,
-    const GURL& document_url) {
-  // Only allow NaCl plugins to request certain permissions. We don't want
-  // a compromised renderer to be able to start a nacl plugin with e.g. Flash
-  // permissions which may expand the surface area of the sandbox.
-  uint32_t masked_bits = permission_bits & ppapi::PERMISSION_DEV;
-  if (content::PluginService::GetInstance()->PpapiDevChannelSupported(
-          browser_context, document_url))
-    masked_bits |= ppapi::PERMISSION_DEV_CHANNEL;
-  return ppapi::PpapiPermissions::GetForCommandLine(masked_bits);
-}
-
-ppapi::PpapiPermissions GetPpapiPermissions(uint32_t permission_bits,
-                                            int render_process_id,
-                                            int render_view_id) {
-  // We get the URL from WebContents from the RenderViewHost, since we don't
-  // have a BrowserPpapiHost yet.
-  content::RenderProcessHost* host =
-      content::RenderProcessHost::FromID(render_process_id);
-  content::RenderViewHost* view_host =
-      content::RenderViewHost::FromID(render_process_id, render_view_id);
-  if (!view_host)
-    return ppapi::PpapiPermissions();
-  GURL document_url;
-  content::WebContents* contents =
-      content::WebContents::FromRenderViewHost(view_host);
-  if (contents)
-    document_url = contents->GetLastCommittedURL();
-  return GetNaClPermissions(permission_bits,
-                            host->GetBrowserContext(),
-                            document_url);
-}
-
-}  // namespace
-
-NaClHostMessageFilter::NaClHostMessageFilter(
-    int render_process_id,
-    bool is_off_the_record,
-    const base::FilePath& profile_directory,
-    net::URLRequestContextGetter* request_context)
-    : BrowserMessageFilter(NaClHostMsgStart),
-      render_process_id_(render_process_id),
-      off_the_record_(is_off_the_record),
-      profile_directory_(profile_directory),
-      request_context_(request_context),
-      weak_ptr_factory_(this) {
-}
-
-NaClHostMessageFilter::~NaClHostMessageFilter() {
-}
-
-void NaClHostMessageFilter::OnChannelClosing() {
-  pnacl::PnaclHost::GetInstance()->RendererClosing(render_process_id_);
-}
-
-bool NaClHostMessageFilter::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(NaClHostMessageFilter, message)
-#if !defined(DISABLE_NACL)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_LaunchNaCl, OnLaunchNaCl)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_GetReadonlyPnaclFD,
-                                    OnGetReadonlyPnaclFd)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_NaClCreateTemporaryFile,
-                                    OnNaClCreateTemporaryFile)
-    IPC_MESSAGE_HANDLER(NaClHostMsg_NexeTempFileRequest,
-                        OnGetNexeFd)
-    IPC_MESSAGE_HANDLER(NaClHostMsg_ReportTranslationFinished,
-                        OnTranslationFinished)
-    IPC_MESSAGE_HANDLER(NaClHostMsg_MissingArchError,
-                        OnMissingArchError)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_OpenNaClExecutable,
-                                    OnOpenNaClExecutable)
-    IPC_MESSAGE_HANDLER(NaClHostMsg_NaClGetNumProcessors,
-                        OnNaClGetNumProcessors)
-    IPC_MESSAGE_HANDLER(NaClHostMsg_NaClDebugEnabledForURL,
-                        OnNaClDebugEnabledForURL)
-#endif
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-
-  return handled;
-}
-
-net::HostResolver* NaClHostMessageFilter::GetHostResolver() {
-  return request_context_->GetURLRequestContext()->host_resolver();
-}
-
-void NaClHostMessageFilter::OnLaunchNaCl(
-    const nacl::NaClLaunchParams& launch_params,
-    IPC::Message* reply_msg) {
-  // If we're running llc or ld for the PNaCl translator, we don't need to look
-  // up permissions, and we don't have the right browser state to look up some
-  // of the whitelisting parameters anyway.
-  if (launch_params.process_type == kPNaClTranslatorProcessType) {
-    uint32_t perms = launch_params.permission_bits & ppapi::PERMISSION_DEV;
-    LaunchNaClContinuationOnIOThread(
-        launch_params,
-        reply_msg,
-        std::vector<NaClResourcePrefetchResult>(),
-        ppapi::PpapiPermissions(perms));
-    return;
-  }
-  content::BrowserThread::PostTask(
-      content::BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&NaClHostMessageFilter::LaunchNaClContinuation,
-                 this,
-                 launch_params,
-                 reply_msg));
-}
-
-void NaClHostMessageFilter::LaunchNaClContinuation(
-    const nacl::NaClLaunchParams& launch_params,
-    IPC::Message* reply_msg) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  ppapi::PpapiPermissions permissions =
-      GetPpapiPermissions(launch_params.permission_bits,
-                          render_process_id_,
-                          launch_params.render_view_id);
-
-  content::RenderViewHost* rvh = content::RenderViewHost::FromID(
-      render_process_id(), launch_params.render_view_id);
-  if (!rvh) {
-    bad_message::ReceivedBadMessage(
-        this, bad_message::NHMF_LAUNCH_CONTINUATION_BAD_ROUTING_ID);
-    delete reply_msg;
-    return;
-  }
-
-  nacl::NaClLaunchParams safe_launch_params(launch_params);
-  safe_launch_params.resource_prefetch_request_list.clear();
-
-  // TODO(yusukes): Fix NaClProcessHost::~NaClProcessHost() and remove the
-  // ifdef.
-#if !defined(OS_WIN)
-  const std::vector<NaClResourcePrefetchRequest>& original_request_list =
-      launch_params.resource_prefetch_request_list;
-  content::SiteInstance* site_instance = rvh->GetSiteInstance();
-  for (size_t i = 0; i < original_request_list.size(); ++i) {
-    GURL gurl(original_request_list[i].resource_url);
-    // Important security check: Do the same check as OpenNaClExecutable()
-    // in nacl_file_host.cc.
-    if (!content::SiteInstance::IsSameWebSite(
-            site_instance->GetBrowserContext(),
-            site_instance->GetSiteURL(),
-            gurl)) {
-      continue;
-    }
-    safe_launch_params.resource_prefetch_request_list.push_back(
-        original_request_list[i]);
-  }
-#endif
-
-  // Process a list of resource file URLs in
-  // |launch_params.resource_files_to_prefetch|.
-  content::BrowserThread::PostBlockingPoolTask(
-      FROM_HERE,
-      base::Bind(&NaClHostMessageFilter::BatchOpenResourceFiles,
-                 this,
-                 safe_launch_params,
-                 reply_msg,
-                 permissions));
-}
-
-void NaClHostMessageFilter::BatchOpenResourceFiles(
-    const nacl::NaClLaunchParams& launch_params,
-    IPC::Message* reply_msg,
-    ppapi::PpapiPermissions permissions) {
-  std::vector<NaClResourcePrefetchResult> prefetched_resource_files;
-  const std::vector<NaClResourcePrefetchRequest>& request_list =
-      launch_params.resource_prefetch_request_list;
-  for (size_t i = 0; i < request_list.size(); ++i) {
-    GURL gurl(request_list[i].resource_url);
-    base::FilePath file_path_metadata;
-    if (!nacl::NaClBrowser::GetDelegate()->MapUrlToLocalFilePath(
-            gurl,
-            true,  // use_blocking_api
-            profile_directory_,
-            &file_path_metadata)) {
-      continue;
-    }
-    base::File file = nacl::OpenNaClReadExecImpl(
-        file_path_metadata, true /* is_executable */);
-    if (!file.IsValid())
-      continue;
-
-    prefetched_resource_files.push_back(NaClResourcePrefetchResult(
-        IPC::TakePlatformFileForTransit(std::move(file)), file_path_metadata,
-        request_list[i].file_key));
-
-    if (prefetched_resource_files.size() >= kMaxPreOpenResourceFiles)
-      break;
-  }
-
-  content::BrowserThread::PostTask(
-      content::BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&NaClHostMessageFilter::LaunchNaClContinuationOnIOThread,
-                 this,
-                 launch_params,
-                 reply_msg,
-                 prefetched_resource_files,
-                 permissions));
-}
-
-void NaClHostMessageFilter::LaunchNaClContinuationOnIOThread(
-    const nacl::NaClLaunchParams& launch_params,
-    IPC::Message* reply_msg,
-    const std::vector<NaClResourcePrefetchResult>& prefetched_resource_files,
-    ppapi::PpapiPermissions permissions) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  NaClFileToken nexe_token = {
-      launch_params.nexe_token_lo,  // lo
-      launch_params.nexe_token_hi   // hi
-  };
-
-  base::PlatformFile nexe_file =
-      IPC::PlatformFileForTransitToPlatformFile(launch_params.nexe_file);
-
-  NaClProcessHost* host = new NaClProcessHost(
-      GURL(launch_params.manifest_url),
-      base::File(nexe_file),
-      nexe_token,
-      prefetched_resource_files,
-      permissions,
-      launch_params.render_view_id,
-      launch_params.permission_bits,
-      launch_params.uses_nonsfi_mode,
-      off_the_record_,
-      launch_params.process_type,
-      profile_directory_);
-  GURL manifest_url(launch_params.manifest_url);
-  base::FilePath manifest_path;
-  // We're calling MapUrlToLocalFilePath with the non-blocking API
-  // because we're running in the I/O thread. Ideally we'd use the other path,
-  // which would cover more cases.
-  nacl::NaClBrowser::GetDelegate()->MapUrlToLocalFilePath(
-      manifest_url,
-      false /* use_blocking_api */,
-      profile_directory_,
-      &manifest_path);
-  host->Launch(this, reply_msg, manifest_path);
-}
-
-void NaClHostMessageFilter::OnGetReadonlyPnaclFd(
-    const std::string& filename, bool is_executable, IPC::Message* reply_msg) {
-  // This posts a task to another thread, but the renderer will
-  // block until the reply is sent.
-  nacl_file_host::GetReadonlyPnaclFd(this, filename, is_executable, reply_msg);
-
-  // This is the first message we receive from the renderer once it knows we
-  // want to use PNaCl, so start the translation cache initialization here.
-  pnacl::PnaclHost::GetInstance()->Init();
-}
-
-// Return the temporary file via a reply to the
-// NaClHostMsg_NaClCreateTemporaryFile sync message.
-void NaClHostMessageFilter::SyncReturnTemporaryFile(
-    IPC::Message* reply_msg,
-    base::File file) {
-  if (file.IsValid()) {
-    NaClHostMsg_NaClCreateTemporaryFile::WriteReplyParams(
-        reply_msg, IPC::TakePlatformFileForTransit(std::move(file)));
-  } else {
-    reply_msg->set_reply_error();
-  }
-  Send(reply_msg);
-}
-
-void NaClHostMessageFilter::OnNaClCreateTemporaryFile(
-    IPC::Message* reply_msg) {
-  pnacl::PnaclHost::GetInstance()->CreateTemporaryFile(
-      base::Bind(&NaClHostMessageFilter::SyncReturnTemporaryFile,
-                 this,
-                 reply_msg));
-}
-
-void NaClHostMessageFilter::AsyncReturnTemporaryFile(
-    int pp_instance,
-    const base::File& file,
-    bool is_hit) {
-  IPC::PlatformFileForTransit fd = IPC::InvalidPlatformFileForTransit();
-  if (file.IsValid()) {
-    // Don't close our copy of the handle, because PnaclHost will use it
-    // when the translation finishes.
-    fd = IPC::GetPlatformFileForTransit(file.GetPlatformFile(), false);
-  }
-  Send(new NaClViewMsg_NexeTempFileReply(pp_instance, is_hit, fd));
-}
-
-void NaClHostMessageFilter::OnNaClGetNumProcessors(int* num_processors) {
-  *num_processors = base::SysInfo::NumberOfProcessors();
-}
-
-void NaClHostMessageFilter::OnGetNexeFd(
-    int render_view_id,
-    int pp_instance,
-    const nacl::PnaclCacheInfo& cache_info) {
-  if (!cache_info.pexe_url.is_valid()) {
-    LOG(ERROR) << "Bad URL received from GetNexeFd: " <<
-        cache_info.pexe_url.possibly_invalid_spec();
-    bad_message::ReceivedBadMessage(this,
-                                    bad_message::NHMF_GET_NEXE_FD_BAD_URL);
-    return;
-  }
-
-  pnacl::PnaclHost::GetInstance()->GetNexeFd(
-      render_process_id_,
-      render_view_id,
-      pp_instance,
-      off_the_record_,
-      cache_info,
-      base::Bind(&NaClHostMessageFilter::AsyncReturnTemporaryFile,
-                 this,
-                 pp_instance));
-}
-
-void NaClHostMessageFilter::OnTranslationFinished(int instance, bool success) {
-  pnacl::PnaclHost::GetInstance()->TranslationFinished(
-      render_process_id_, instance, success);
-}
-
-void NaClHostMessageFilter::OnMissingArchError(int render_view_id) {
-  nacl::NaClBrowser::GetDelegate()->
-      ShowMissingArchInfobar(render_process_id_, render_view_id);
-}
-
-void NaClHostMessageFilter::OnOpenNaClExecutable(
-    int render_view_id,
-    const GURL& file_url,
-    bool enable_validation_caching,
-    IPC::Message* reply_msg) {
-  nacl_file_host::OpenNaClExecutable(this,
-                                     render_view_id,
-                                     file_url,
-                                     enable_validation_caching,
-                                     reply_msg);
-}
-
-void NaClHostMessageFilter::OnNaClDebugEnabledForURL(const GURL& nmf_url,
-                                                     bool* should_debug) {
-  *should_debug =
-      nacl::NaClBrowser::GetDelegate()->URLMatchesDebugPatterns(nmf_url);
-}
-
-}  // namespace nacl