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 namespace chrome {
  21
  22 PepperFlashFontFileHost::PepperFlashFontFileHost(
  23     content::RendererPpapiHost* host,
  24     PP_Instance instance,
  25     PP_Resource resource,
  26     const ppapi::proxy::SerializedFontDescription& description,
  27     PP_PrivateFontCharset charset)
  28     : ResourceHost(host->GetPpapiHost(), instance, resource),
  29       renderer_ppapi_host_(host),
  30       fd_(-1) {
  31 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  32   fd_ = content::MatchFontWithFallback(
  33       description.face.c_str(), description.weight >=
  34           PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD,
  35       description.italic, charset);
  36 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  37 }
  38
  39 PepperFlashFontFileHost::~PepperFlashFontFileHost() {
  40 }
  41
  42 int32_t PepperFlashFontFileHost::OnResourceMessageReceived(
  43     const IPC::Message& msg,
  44     ppapi::host::HostMessageContext* context) {
  45   IPC_BEGIN_MESSAGE_MAP(PepperFlashFontFileHost, msg)
  46     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashFontFile_GetFontTable,
  47                                       OnGetFontTable)
  48   IPC_END_MESSAGE_MAP()
  49   return PP_ERROR_FAILED;
  50 }
  51
  52 int32_t PepperFlashFontFileHost::OnGetFontTable(
  53     ppapi::host::HostMessageContext* context,
  54     uint32_t table) {
  55   std::string contents;
  56   int32_t result = PP_ERROR_FAILED;
  57 #if defined(OS_LINUX) || defined(OS_OPENBSD)
  58   if (fd_ != -1) {
  59     size_t length = 0;
  60     if (content::GetFontTable(fd_, table, 0 /* offset */, NULL, &length)) {
  61       contents.resize(length);
  62       uint8_t* contents_ptr =
  63           reinterpret_cast<uint8_t*>(const_cast<char*>(contents.c_str()));
  64       if (content::GetFontTable(fd_, table, 0 /* offset */,
  65                                 contents_ptr, &length)) {
  66         result = PP_OK;
  67       } else {
  68         contents.clear();
  69       }
  70     }
  71   }
  72 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
  73
  74   context->reply_msg = PpapiPluginMsg_FlashFontFile_GetFontTableReply(contents);
  75   return result;
  76 }
  77
  78 }  // namespace chrome
  79