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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/child_process_logging.h"
#include <windows.h>
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/crash_keys.h"
#include "chrome/common/metrics/variations/variations_util.h"
#include "chrome/installer/util/google_update_settings.h"
namespace child_process_logging {
namespace {
// exported in breakpad_win.cc: void __declspec(dllexport) __cdecl SetClientId.
typedef void (__cdecl *MainSetClientId)(const wchar_t*);
// exported in breakpad_win.cc:
// void __declspec(dllexport) __cdecl SetPrinterInfo.
typedef void (__cdecl *MainSetPrinterInfo)(const wchar_t*);
// exported in breakpad_win.cc:
// void __declspec(dllexport) __cdecl SetCommandLine2
typedef void (__cdecl *MainSetCommandLine)(const wchar_t**, size_t);
// exported in breakpad_field_trial_win.cc:
// void __declspec(dllexport) __cdecl SetExperimentList3
typedef void (__cdecl *MainSetExperimentList)(const wchar_t**, size_t, size_t);
// exported in breakpad_win.cc:
// void __declspec(dllexport) __cdecl SetCrashKeyValueImpl.
typedef void (__cdecl *SetCrashKeyValue)(const wchar_t*, const wchar_t*);
// exported in breakpad_win.cc:
// void __declspec(dllexport) __cdecl ClearCrashKeyValueImpl.
typedef void (__cdecl *ClearCrashKeyValue)(const wchar_t*);
// Copied from breakpad_win.cc.
void StringVectorToCStringVector(const std::vector<std::wstring>& wstrings,
std::vector<const wchar_t*>* cstrings) {
cstrings->clear();
cstrings->reserve(wstrings.size());
for (size_t i = 0; i < wstrings.size(); ++i)
cstrings->push_back(wstrings[i].c_str());
}
} // namespace
void SetClientId(const std::string& client_id) {
std::string str(client_id);
// Remove all instance of '-' char from the GUID. So BCD-WXY becomes BCDWXY.
ReplaceSubstringsAfterOffset(&str, 0, "-", "");
if (str.empty())
return;
std::wstring wstr = ASCIIToWide(str);
std::wstring old_wstr;
if (!GoogleUpdateSettings::GetMetricsId(&old_wstr) ||
wstr != old_wstr)
GoogleUpdateSettings::SetMetricsId(wstr);
static MainSetClientId set_client_id = NULL;
// note: benign race condition on set_client_id.
if (!set_client_id) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
set_client_id = reinterpret_cast<MainSetClientId>(
GetProcAddress(exe_module, "SetClientId"));
if (!set_client_id)
return;
}
(set_client_id)(wstr.c_str());
}
std::string GetClientId() {
std::wstring wstr_client_id;
if (GoogleUpdateSettings::GetMetricsId(&wstr_client_id))
return WideToASCII(wstr_client_id);
else
return std::string();
}
void SetPrinterInfo(const char* printer_info) {
static MainSetPrinterInfo set_printer_info = NULL;
// note: benign race condition on set_printer_info.
if (!set_printer_info) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
set_printer_info = reinterpret_cast<MainSetPrinterInfo>(
GetProcAddress(exe_module, "SetPrinterInfo"));
if (!set_printer_info)
return;
}
(set_printer_info)(UTF8ToWide(printer_info).c_str());
}
void SetCommandLine(const CommandLine* command_line) {
static MainSetCommandLine set_command_line = NULL;
// note: benign race condition on set_command_line.
if (!set_command_line) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
set_command_line = reinterpret_cast<MainSetCommandLine>(
GetProcAddress(exe_module, "SetCommandLine2"));
if (!set_command_line)
return;
}
if (command_line->argv().empty())
return;
std::vector<const wchar_t*> cstrings;
StringVectorToCStringVector(command_line->argv(), &cstrings);
(set_command_line)(&cstrings[0], cstrings.size());
}
void SetExperimentList(const std::vector<string16>& experiments) {
static MainSetExperimentList set_experiment_list = NULL;
// note: benign race condition on set_experiment_list.
if (!set_experiment_list) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
set_experiment_list = reinterpret_cast<MainSetExperimentList>(
GetProcAddress(exe_module, "SetExperimentList3"));
if (!set_experiment_list)
return;
}
std::vector<string16> chunks;
chrome_variations::GenerateVariationChunks(experiments, &chunks);
// If the list is empty, notify the child process of the number of experiments
// and exit early.
if (chunks.empty()) {
(set_experiment_list)(NULL, 0, 0);
return;
}
std::vector<const wchar_t*> cstrings;
StringVectorToCStringVector(chunks, &cstrings);
(set_experiment_list)(&cstrings[0], cstrings.size(), experiments.size());
}
namespace {
void SetCrashKeyValueTrampoline(const base::StringPiece& key,
const base::StringPiece& value) {
static SetCrashKeyValue set_crash_key = NULL;
if (!set_crash_key) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
set_crash_key = reinterpret_cast<SetCrashKeyValue>(
GetProcAddress(exe_module, "SetCrashKeyValueImpl"));
}
if (set_crash_key)
(set_crash_key)(UTF8ToWide(key).data(), UTF8ToWide(value).data());
}
void ClearCrashKeyValueTrampoline(const base::StringPiece& key) {
static ClearCrashKeyValue clear_crash_key = NULL;
if (!clear_crash_key) {
HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
if (!exe_module)
return;
clear_crash_key = reinterpret_cast<ClearCrashKeyValue>(
GetProcAddress(exe_module, "ClearCrashKeyValueImpl"));
}
if (clear_crash_key)
(clear_crash_key)(UTF8ToWide(key).data());
}
} // namespace
void Init() {
// Note: on other platforms, this is set up during Breakpad initialization,
// in ChromeBreakpadClient. But on Windows, that is before the DLL module is
// loaded, which is a prerequisite of the crash key system.
crash_keys::RegisterChromeCrashKeys();
base::debug::SetCrashKeyReportingFunctions(
&SetCrashKeyValueTrampoline, &ClearCrashKeyValueTrampoline);
}
} // namespace child_process_logging
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