/* * Copyright (C) 2019 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. ``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 * 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 <wtf/SystemTracing.h> #import <cstdlib> #import <dispatch/dispatch.h> #import <wtf/spi/darwin/OSVariantSPI.h> bool WTFSignpostsEnabled() { static dispatch_once_t once; static bool enabled; dispatch_once(&once, ^{ // Signposts may contain sensitive info that we don't want to emit to logd except when // profiling (such as URLs). To guard against accidental leakage, only enable them on Apple // internal builds when an environment variable is set. if (os_variant_allows_internal_security_policies("com.apple.WebKit")) enabled = !strcmp(getenv("WEBKIT_SIGNPOSTS_ENABLED") ?: "0", "1"); }); return enabled; } os_log_t WTFSignpostLogHandle() { static dispatch_once_t once; static os_log_t handle; dispatch_once(&once, ^{ handle = os_log_create("com.apple.WebKit", "Signposts"); }); return handle; }