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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/390223051): Remove C-library calls to fix the errors.
#pragma allow_unsafe_libc_calls
#endif
#include "content/common/content_switches_internal.h"
#include <string>
#include <string_view>
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/field_trial_params.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "build/branding_buildflags.h"
#include "build/build_config.h"
#include "content/public/common/content_switches.h"
#include "third_party/blink/public/mojom/v8_cache_options.mojom.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/debug/debugger.h"
#include "base/feature_list.h"
#endif
#if BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_ANDROID)
#include <signal.h>
static void SigUSR1Handler(int signal) {}
#endif
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include "base/win/windows_version.h"
#endif
namespace content {
namespace {
#if BUILDFLAG(IS_WIN)
std::wstring ToNativeString(std::string_view string) {
return base::ASCIIToWide(string);
}
std::string FromNativeString(std::wstring_view string) {
return base::WideToASCII(string);
}
#else // BUILDFLAG(IS_WIN)
std::string ToNativeString(const std::string& string) {
return string;
}
std::string FromNativeString(const std::string& string) {
return string;
}
#endif // BUILDFLAG(IS_WIN)
} // namespace
blink::mojom::V8CacheOptions GetV8CacheOptions() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string v8_cache_options =
command_line.GetSwitchValueASCII(switches::kV8CacheOptions);
if (v8_cache_options.empty())
v8_cache_options = base::FieldTrialList::FindFullName("V8CacheOptions");
if (v8_cache_options == "none") {
return blink::mojom::V8CacheOptions::kNone;
} else if (v8_cache_options == "code") {
return blink::mojom::V8CacheOptions::kCode;
} else {
return blink::mojom::V8CacheOptions::kDefault;
}
}
void WaitForDebugger(const std::string& label) {
#if BUILDFLAG(IS_WIN)
#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
std::string title = "Google Chrome";
#else // BUILDFLAG(CHROMIUM_BRANDING)
std::string title = "Chromium";
#endif // BUILDFLAG(CHROMIUM_BRANDING)
title += " ";
title += label; // makes attaching to process easier
std::string message = label;
message += " starting with pid: ";
message += base::NumberToString(base::GetCurrentProcId());
::MessageBox(NULL, base::UTF8ToWide(message).c_str(),
base::UTF8ToWide(title).c_str(), MB_OK | MB_SETFOREGROUND);
#elif BUILDFLAG(IS_POSIX)
#if BUILDFLAG(IS_ANDROID)
LOG(ERROR) << label << " waiting for GDB.";
// Wait 24 hours for a debugger to be attached to the current process.
base::debug::WaitForDebugger(24 * 60 * 60, true);
#else
// TODO(playmobil): In the long term, overriding this flag doesn't seem
// right, either use our own flag or open a dialog we can use.
// This is just to ease debugging in the interim.
LOG(ERROR) << label << " (" << getpid()
<< ") paused waiting for debugger to attach. "
<< "Send SIGUSR1 to unpause.";
// Install a signal handler so that pause can be woken.
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = SigUSR1Handler;
sigaction(SIGUSR1, &sa, nullptr);
pause();
#endif // BUILDFLAG(IS_ANDROID)
#endif // BUILDFLAG(IS_POSIX)
}
std::vector<std::string> FeaturesFromSwitch(
const base::CommandLine& command_line,
const char* switch_name) {
using NativeString = base::CommandLine::StringType;
using NativeStringView = base::CommandLine::StringViewType;
std::vector<std::string> features;
if (!command_line.HasSwitch(switch_name))
return features;
// Store prefix as native string to avoid conversions for every arg.
// (No string copies for the args that don't match the prefix.)
NativeString prefix =
ToNativeString(base::StringPrintf("--%s=", switch_name));
for (NativeStringView arg : command_line.argv()) {
// Switch names are case insensitive on Windows, but base::CommandLine has
// already made them lowercase when building argv().
if (!base::StartsWith(arg, prefix, base::CompareCase::SENSITIVE)) {
continue;
}
arg.remove_prefix(prefix.size());
if (!base::IsStringASCII(arg)) {
continue;
}
auto vals = base::SplitString(FromNativeString(NativeString(arg)), ",",
base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
features.insert(features.end(), vals.begin(), vals.end());
}
return features;
}
} // namespace content
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