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// Copyright (c) 2011 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 "sandbox/src/job.h"
#include "base/win/windows_version.h"
#include "sandbox/src/restricted_token.h"
namespace sandbox {
Job::~Job() {
if (job_handle_)
::CloseHandle(job_handle_);
};
DWORD Job::Init(JobLevel security_level, wchar_t *job_name,
DWORD ui_exceptions) {
if (job_handle_)
return ERROR_ALREADY_INITIALIZED;
job_handle_ = ::CreateJobObject(NULL, // No security attribute
job_name);
if (!job_handle_)
return ::GetLastError();
JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli = {0};
JOBOBJECT_BASIC_UI_RESTRICTIONS jbur = {0};
// Set the settings for the different security levels. Note: The higher levels
// inherit from the lower levels.
switch (security_level) {
case JOB_LOCKDOWN: {
jeli.BasicLimitInformation.LimitFlags |=
JOB_OBJECT_LIMIT_DIE_ON_UNHANDLED_EXCEPTION;
}
case JOB_RESTRICTED: {
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_WRITECLIPBOARD;
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_READCLIPBOARD;
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_HANDLES;
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_GLOBALATOMS;
}
case JOB_LIMITED_USER: {
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_DISPLAYSETTINGS;
jeli.BasicLimitInformation.LimitFlags |= JOB_OBJECT_LIMIT_ACTIVE_PROCESS;
jeli.BasicLimitInformation.ActiveProcessLimit = 1;
}
case JOB_INTERACTIVE: {
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_SYSTEMPARAMETERS;
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_DESKTOP;
jbur.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_EXITWINDOWS;
}
case JOB_UNPROTECTED: {
// The JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE flag is not supported on
// Windows 2000. We need a mechanism on Windows 2000 to ensure
// that processes in the job are terminated when the job is closed
if (base::win::GetVersion() == base::win::VERSION_PRE_XP)
break;
jeli.BasicLimitInformation.LimitFlags |=
JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
break;
}
default: {
return ERROR_BAD_ARGUMENTS;
}
}
if (FALSE == ::SetInformationJobObject(job_handle_,
JobObjectExtendedLimitInformation,
&jeli,
sizeof(jeli))) {
return ::GetLastError();
}
jbur.UIRestrictionsClass = jbur.UIRestrictionsClass & (~ui_exceptions);
if (FALSE == ::SetInformationJobObject(job_handle_,
JobObjectBasicUIRestrictions,
&jbur,
sizeof(jbur))) {
return ::GetLastError();
}
return ERROR_SUCCESS;
}
DWORD Job::UserHandleGrantAccess(HANDLE handle) {
if (!job_handle_)
return ERROR_NO_DATA;
if (!::UserHandleGrantAccess(handle,
job_handle_,
TRUE)) { // Access allowed.
return ::GetLastError();
}
return ERROR_SUCCESS;
}
HANDLE Job::Detach() {
HANDLE handle_temp = job_handle_;
job_handle_ = NULL;
return handle_temp;
}
DWORD Job::AssignProcessToJob(HANDLE process_handle) {
if (!job_handle_)
return ERROR_NO_DATA;
if (FALSE == ::AssignProcessToJobObject(job_handle_, process_handle))
return ::GetLastError();
return ERROR_SUCCESS;
}
} // namespace sandbox
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