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      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 "base/command_line.h"
      6 #include "base/debug/debugger.h"
      7 #include "base/i18n/rtl.h"
      8 #include "base/message_loop/message_loop.h"
      9 #include "base/threading/platform_thread.h"
     10 #include "build/build_config.h"
     11 #include "content/child/child_process.h"
     12 #include "content/common/content_constants_internal.h"
     13 #include "content/common/sandbox_linux/sandbox_linux.h"
     14 #include "content/ppapi_plugin/ppapi_thread.h"
     15 #include "content/public/common/content_client.h"
     16 #include "content/public/common/content_switches.h"
     17 #include "content/public/common/main_function_params.h"
     18 #include "content/public/plugin/content_plugin_client.h"
     19 #include "crypto/nss_util.h"
     20 #include "ppapi/proxy/plugin_globals.h"
     21 #include "ppapi/proxy/proxy_module.h"
     22 #include "ui/base/ui_base_switches.h"
     23 
     24 #if defined(OS_WIN)
     25 #include "sandbox/win/src/sandbox.h"
     26 #include "third_party/skia/include/ports/SkTypeface_win.h"
     27 #endif
     28 
     29 #if defined(OS_LINUX)
     30 #include "content/public/common/sandbox_init.h"
     31 #endif
     32 
     33 #if defined(OS_POSIX) && !defined(OS_ANDROID)
     34 #include <stdlib.h>
     35 #endif
     36 
     37 #if defined(OS_WIN)
     38 sandbox::TargetServices* g_target_services = NULL;
     39 #else
     40 void* g_target_services = 0;
     41 #endif
     42 
     43 namespace content {
     44 
     45 namespace {
     46 
     47 #if defined(OS_WIN)
     48 // Windows-only skia sandbox support
     49 void SkiaPreCacheFont(const LOGFONT& logfont) {
     50   ppapi::proxy::PluginGlobals::Get()->PreCacheFontForFlash(
     51       reinterpret_cast<const void*>(&logfont));
     52 }
     53 #endif
     54 
     55 }  // namespace
     56 
     57 // Main function for starting the PPAPI plugin process.
     58 int PpapiPluginMain(const MainFunctionParams& parameters) {
     59   const CommandLine& command_line = parameters.command_line;
     60 
     61 #if defined(OS_WIN)
     62   g_target_services = parameters.sandbox_info->target_services;
     63 #endif
     64 
     65   // If |g_target_services| is not null this process is sandboxed. One side
     66   // effect is that we can't pop dialogs like ChildProcess::WaitForDebugger()
     67   // does.
     68   if (command_line.HasSwitch(switches::kPpapiStartupDialog)) {
     69     if (g_target_services)
     70       base::debug::WaitForDebugger(2*60, false);
     71     else
     72       ChildProcess::WaitForDebugger("Ppapi");
     73   }
     74 
     75   // Set the default locale to be the current UI language. WebKit uses ICU's
     76   // default locale for some font settings (especially switching between
     77   // Japanese and Chinese fonts for the same characters).
     78   if (command_line.HasSwitch(switches::kLang)) {
     79     std::string locale = command_line.GetSwitchValueASCII(switches::kLang);
     80     base::i18n::SetICUDefaultLocale(locale);
     81 
     82 #if defined(OS_POSIX) && !defined(OS_ANDROID)
     83     // TODO(shess): Flash appears to have a POSIX locale dependency
     84     // outside of the existing PPAPI ICU support.  Certain games hang
     85     // while loading, and it seems related to datetime formatting.
     86     // http://crbug.com/155396
     87     // http://crbug.com/155671
     88     //
     89     // ICU can accept "en-US" or "en_US", but POSIX wants "en_US".
     90     std::replace(locale.begin(), locale.end(), '-', '_');
     91     locale.append(".UTF-8");
     92     setlocale(LC_ALL, locale.c_str());
     93     setenv("LANG", locale.c_str(), 0);
     94 #endif
     95   }
     96 
     97   base::MessageLoop main_message_loop;
     98   base::PlatformThread::SetName("CrPPAPIMain");
     99   base::debug::TraceLog::GetInstance()->SetProcessName("PPAPI Process");
    100   base::debug::TraceLog::GetInstance()->SetProcessSortIndex(
    101       kTraceEventPpapiProcessSortIndex);
    102 
    103 #if defined(OS_LINUX) && defined(USE_NSS)
    104   // Some out-of-process PPAPI plugins use NSS.
    105   // NSS must be initialized before enabling the sandbox below.
    106   crypto::InitNSSSafely();
    107 #endif
    108 
    109   // Allow the embedder to perform any necessary per-process initialization
    110   // before the sandbox is initialized.
    111   if (GetContentClient()->plugin())
    112     GetContentClient()->plugin()->PreSandboxInitialization();
    113 
    114 #if defined(OS_LINUX)
    115   LinuxSandbox::InitializeSandbox();
    116 #endif
    117 
    118   ChildProcess ppapi_process;
    119   ppapi_process.set_main_thread(
    120       new PpapiThread(parameters.command_line, false));  // Not a broker.
    121 
    122 #if defined(OS_WIN)
    123   SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
    124 #endif
    125 
    126   main_message_loop.Run();
    127   return 0;
    128 }
    129 
    130 }  // namespace content
    131