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 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  29   fd_.reset(content::MatchFontWithFallback(
  30       description.face.c_str(),
  31       description.weight >= PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD,
  32       description.italic,
  33       charset,
  34       PP_BROWSERFONT_TRUSTED_FAMILY_DEFAULT));
  35 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  36 }
  37
  38 PepperFlashFontFileHost::~PepperFlashFontFileHost() {}
  39
  40 int32_t PepperFlashFontFileHost::OnResourceMessageReceived(
  41     const IPC::Message& msg,
  42     ppapi::host::HostMessageContext* context) {
  43   PPAPI_BEGIN_MESSAGE_MAP(PepperFlashFontFileHost, msg)
  44     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashFontFile_GetFontTable,
  45                                       OnGetFontTable)
  46   PPAPI_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   int fd = fd_.get();
  57   if (fd != -1) {
  58     size_t length = 0;
  59     if (content::GetFontTable(fd, table, 0 /* offset */, NULL, &length)) {
  60       contents.resize(length);
  61       uint8_t* contents_ptr =
  62           reinterpret_cast<uint8_t*>(const_cast<char*>(contents.c_str()));
  63       if (content::GetFontTable(
  64               fd, table, 0 /* offset */, contents_ptr, &length)) {
  65         result = PP_OK;
  66       } else {
  67         contents.clear();
  68       }
  69     }
  70   }
  71 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  72
  73   context->reply_msg = PpapiPluginMsg_FlashFontFile_GetFontTableReply(contents);
  74   return result;
  75 }