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