chrome/renderer/pepper/pepper_flash_font_file_host.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/pepper/pepper_flash_font_file_host.h"
   6
   7 #include "build/build_config.h"
   8 #include "content/public/renderer/renderer_ppapi_host.h"
   9 #include "ppapi/c/pp_errors.h"
  10 #include "ppapi/host/dispatch_host_message.h"
  11 #include "ppapi/host/host_message_context.h"
  12 #include "ppapi/host/ppapi_host.h"
  13 #include "ppapi/proxy/ppapi_messages.h"
  14 #include "ppapi/proxy/serialized_structs.h"
  15
  16 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  17 #include "content/public/common/child_process_sandbox_support_linux.h"
  18 #endif
  19
  20 PepperFlashFontFileHost::PepperFlashFontFileHost(
  21     content::RendererPpapiHost* host,
  22     PP_Instance instance,
  23     PP_Resource resource,
  24     const ppapi::proxy::SerializedFontDescription& description,
  25     PP_PrivateFontCharset charset)
  26     : ResourceHost(host->GetPpapiHost(), instance, resource),
  27       renderer_ppapi_host_(host),
  28       fd_(-1) {
  29 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  30   fd_ = content::MatchFontWithFallback(
  31       description.face.c_str(), description.weight >=
  32           PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD,
  33       description.italic, charset);
  34 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  35 }
  36
  37 PepperFlashFontFileHost::~PepperFlashFontFileHost() {
  38 }
  39
  40 int32_t PepperFlashFontFileHost::OnResourceMessageReceived(
  41     const IPC::Message& msg,
  42     ppapi::host::HostMessageContext* context) {
  43   IPC_BEGIN_MESSAGE_MAP(PepperFlashFontFileHost, msg)
  44     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashFontFile_GetFontTable,
  45                                       OnGetFontTable)
  46   IPC_END_MESSAGE_MAP()
  47   return PP_ERROR_FAILED;
  48 }
  49
  50 int32_t PepperFlashFontFileHost::OnGetFontTable(
  51     ppapi::host::HostMessageContext* context,
  52     uint32_t table) {
  53   std::string contents;
  54   int32_t result = PP_ERROR_FAILED;
  55 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  56   if (fd_ != -1) {
  57     size_t length = 0;
  58     if (content::GetFontTable(fd_, table, 0 /* offset */, NULL, &length)) {
  59       contents.resize(length);
  60       uint8_t* contents_ptr =
  61           reinterpret_cast<uint8_t*>(const_cast<char*>(contents.c_str()));
  62       if (content::GetFontTable(fd_, table, 0 /* offset */,
  63                                 contents_ptr, &length)) {
  64         result = PP_OK;
  65       } else {
  66         contents.clear();
  67       }
  68     }
  69   }
  70 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  71
  72   context->reply_msg = PpapiPluginMsg_FlashFontFile_GetFontTableReply(contents);
  73   return result;
  74 }