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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "ChildProcess.h"
#import "SandboxInitializationParameters.h"
#import "WebKitSystemInterface.h"
#import <WebCore/FileSystem.h>
#import <WebCore/SystemVersionMac.h>
#import <mach/task.h>
#import <pwd.h>
#import <stdlib.h>
#import <sysexits.h>
// We have to #undef __APPLE_API_PRIVATE to prevent sandbox.h from looking for a header file that does not exist (<rdar://problem/9679211>).
#undef __APPLE_API_PRIVATE
#import <sandbox.h>
#define SANDBOX_NAMED_EXTERNAL 0x0003
extern "C" int sandbox_init_with_parameters(const char *profile, uint64_t flags, const char *const parameters[], char **errorbuf);
#ifdef __has_include
#if __has_include(<HIServices/ProcessesPriv.h>)
#include <HIServices/ProcessesPriv.h>
#endif
#endif
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
typedef bool (^LSServerConnectionAllowedBlock) ( CFDictionaryRef optionsRef );
extern "C" void _LSSetApplicationLaunchServicesServerConnectionStatus(uint64_t flags, LSServerConnectionAllowedBlock block);
extern "C" CFDictionaryRef _LSApplicationCheckIn(int sessionID, CFDictionaryRef applicationInfo);
#endif
extern "C" OSStatus SetApplicationIsDaemon(Boolean isDaemon);
using namespace WebCore;
namespace WebKit {
static const double kSuspensionHysteresisSeconds = 5.0;
void ChildProcess::setProcessSuppressionEnabledInternal(bool processSuppressionEnabled)
{
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
if (this->processSuppressionEnabled() == processSuppressionEnabled)
return;
if (processSuppressionEnabled) {
ASSERT(!m_activeTaskCount);
[[NSProcessInfo processInfo] endActivity:m_processSuppressionAssertion.get()];
m_processSuppressionAssertion.clear();
} else {
NSActivityOptions options = (NSActivityUserInitiatedAllowingIdleSystemSleep | NSActivityLatencyCritical) & ~(NSActivitySuddenTerminationDisabled | NSActivityAutomaticTerminationDisabled);
m_processSuppressionAssertion = [[NSProcessInfo processInfo] beginActivityWithOptions:options reason:@"Process Suppression Disabled"];
}
#else
UNUSED_PARAM(processSuppressionEnabled);
#endif
}
void ChildProcess::setProcessSuppressionEnabled(bool processSuppressionEnabled)
{
if (this->processSuppressionEnabled() == processSuppressionEnabled)
return;
if (m_shouldSuspend == processSuppressionEnabled)
return;
m_shouldSuspend = processSuppressionEnabled;
if (m_shouldSuspend) {
if (!m_activeTaskCount)
m_suspensionHysteresisTimer.startOneShot(kSuspensionHysteresisSeconds);
return;
}
setProcessSuppressionEnabledInternal(false);
}
void ChildProcess::incrementActiveTaskCount()
{
m_activeTaskCount++;
if (m_suspensionHysteresisTimer.isActive())
m_suspensionHysteresisTimer.stop();
if (m_activeTaskCount)
setProcessSuppressionEnabledInternal(false);
}
void ChildProcess::decrementActiveTaskCount()
{
ASSERT(m_activeTaskCount);
m_activeTaskCount--;
if (m_activeTaskCount)
return;
if (m_shouldSuspend)
m_suspensionHysteresisTimer.startOneShot(kSuspensionHysteresisSeconds);
}
void ChildProcess::suspensionHysteresisTimerFired()
{
ASSERT(!m_activeTaskCount);
ASSERT(m_shouldSuspend);
setProcessSuppressionEnabledInternal(true);
}
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
static void initializeTimerCoalescingPolicy()
{
// Set task_latency and task_throughput QOS tiers as appropriate for a visible application.
struct task_qos_policy qosinfo = { LATENCY_QOS_TIER_0, THROUGHPUT_QOS_TIER_0 };
kern_return_t kr = task_policy_set(mach_task_self(), TASK_BASE_QOS_POLICY, (task_policy_t)&qosinfo, TASK_QOS_POLICY_COUNT);
ASSERT_UNUSED(kr, kr == KERN_SUCCESS);
}
#endif
void ChildProcess::setApplicationIsDaemon()
{
OSStatus error = SetApplicationIsDaemon(true);
ASSERT_UNUSED(error, error == noErr);
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
_LSSetApplicationLaunchServicesServerConnectionStatus(0, 0);
RetainPtr<CFDictionaryRef> unused = _LSApplicationCheckIn(-2, CFBundleGetInfoDictionary(CFBundleGetMainBundle()));
#endif
}
void ChildProcess::platformInitialize()
{
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
initializeTimerCoalescingPolicy();
#endif
// Starting with process suppression disabled. The proxy for this process will
// enable if appropriate from didFinishLaunching().
// We use setProcessSuppressionEnabledInternal to avoid any short circuit logic
// that would prevent us from taking the suppression assertion.
setProcessSuppressionEnabledInternal(false);
[[NSFileManager defaultManager] changeCurrentDirectoryPath:[[NSBundle mainBundle] bundlePath]];
}
void ChildProcess::initializeSandbox(const ChildProcessInitializationParameters& parameters, SandboxInitializationParameters& sandboxParameters)
{
NSBundle *webkit2Bundle = [NSBundle bundleForClass:NSClassFromString(@"WKView")];
String defaultProfilePath = [webkit2Bundle pathForResource:[[NSBundle mainBundle] bundleIdentifier] ofType:@"sb"];
if (sandboxParameters.systemDirectorySuffix().isNull()) {
String defaultSystemDirectorySuffix = String([[NSBundle mainBundle] bundleIdentifier]) + "+" + parameters.clientIdentifier;
sandboxParameters.setSystemDirectorySuffix(defaultSystemDirectorySuffix);
}
Vector<String> osVersionParts;
String osSystemMarketingVersion = String(systemMarketingVersion());
osSystemMarketingVersion.split('.', false, osVersionParts);
if (osVersionParts.size() < 2) {
WTFLogAlways("%s: Couldn't find OS Version\n", getprogname());
exit(EX_NOPERM);
}
String osVersion = osVersionParts[0];
osVersion.append('.');
osVersion.append(osVersionParts[1]);
sandboxParameters.addParameter("_OS_VERSION", osVersion.utf8().data());
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1080
// Use private temporary and cache directories.
setenv("DIRHELPER_USER_DIR_SUFFIX", fileSystemRepresentation(sandboxParameters.systemDirectorySuffix()).data(), 0);
char temporaryDirectory[PATH_MAX];
if (!confstr(_CS_DARWIN_USER_TEMP_DIR, temporaryDirectory, sizeof(temporaryDirectory))) {
WTFLogAlways("%s: couldn't retrieve private temporary directory path: %d\n", getprogname(), errno);
exit(EX_NOPERM);
}
setenv("TMPDIR", temporaryDirectory, 1);
#endif
sandboxParameters.addPathParameter("WEBKIT2_FRAMEWORK_DIR", [[webkit2Bundle bundlePath] stringByDeletingLastPathComponent]);
sandboxParameters.addConfDirectoryParameter("DARWIN_USER_TEMP_DIR", _CS_DARWIN_USER_TEMP_DIR);
sandboxParameters.addConfDirectoryParameter("DARWIN_USER_CACHE_DIR", _CS_DARWIN_USER_CACHE_DIR);
char buffer[4096];
int bufferSize = sizeof(buffer);
struct passwd pwd;
struct passwd* result = 0;
if (getpwuid_r(getuid(), &pwd, buffer, bufferSize, &result) || !result) {
WTFLogAlways("%s: Couldn't find home directory\n", getprogname());
exit(EX_NOPERM);
}
sandboxParameters.addPathParameter("HOME_DIR", pwd.pw_dir);
String path = String::fromUTF8(pwd.pw_dir);
path.append("/Library");
sandboxParameters.addPathParameter("HOME_LIBRARY_DIR", fileSystemRepresentation(path).data());
path.append("/Preferences");
sandboxParameters.addPathParameter("HOME_LIBRARY_PREFERENCES_DIR", fileSystemRepresentation(path).data());
switch (sandboxParameters.mode()) {
case SandboxInitializationParameters::UseDefaultSandboxProfilePath:
case SandboxInitializationParameters::UseOverrideSandboxProfilePath: {
String sandboxProfilePath = sandboxParameters.mode() == SandboxInitializationParameters::UseDefaultSandboxProfilePath ? defaultProfilePath : sandboxParameters.overrideSandboxProfilePath();
if (!sandboxProfilePath.isEmpty()) {
CString profilePath = fileSystemRepresentation(sandboxProfilePath);
char* errorBuf;
if (sandbox_init_with_parameters(profilePath.data(), SANDBOX_NAMED_EXTERNAL, sandboxParameters.namedParameterArray(), &errorBuf)) {
WTFLogAlways("%s: Couldn't initialize sandbox profile [%s], error '%s'\n", getprogname(), profilePath.data(), errorBuf);
for (size_t i = 0, count = sandboxParameters.count(); i != count; ++i)
WTFLogAlways("%s=%s\n", sandboxParameters.name(i), sandboxParameters.value(i));
exit(EX_NOPERM);
}
}
break;
}
case SandboxInitializationParameters::UseSandboxProfile: {
char* errorBuf;
if (sandbox_init_with_parameters(sandboxParameters.sandboxProfile().utf8().data(), 0, sandboxParameters.namedParameterArray(), &errorBuf)) {
WTFLogAlways("%s: Couldn't initialize sandbox profile, error '%s'\n", getprogname(), errorBuf);
for (size_t i = 0, count = sandboxParameters.count(); i != count; ++i)
WTFLogAlways("%s=%s\n", sandboxParameters.name(i), sandboxParameters.value(i));
exit(EX_NOPERM);
}
break;
}
}
// This will override LSFileQuarantineEnabled from Info.plist unless sandbox quarantine is globally disabled.
OSStatus error = WKEnableSandboxStyleFileQuarantine();
if (error) {
WTFLogAlways("%s: Couldn't enable sandbox style file quarantine: %ld\n", getprogname(), (long)error);
exit(EX_NOPERM);
}
}
}
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