60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "config.h"
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#import <wtf/SystemTracing.h>
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#import <cstdlib>
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#import <dispatch/dispatch.h>
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#import <wtf/spi/darwin/OSVariantSPI.h>
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bool WTFSignpostsEnabled()
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{
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static dispatch_once_t once;
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static bool enabled;
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dispatch_once(&once, ^{
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// Signposts may contain sensitive info that we don't want to emit to logd except when
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// profiling (such as URLs). To guard against accidental leakage, only enable them on Apple
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// internal builds when an environment variable is set.
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if (os_variant_allows_internal_security_policies("com.apple.WebKit"))
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enabled = !strcmp(getenv("WEBKIT_SIGNPOSTS_ENABLED") ?: "0", "1");
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});
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return enabled;
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}
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os_log_t WTFSignpostLogHandle()
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{
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static dispatch_once_t once;
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static os_log_t handle;
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dispatch_once(&once, ^{
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handle = os_log_create("com.apple.WebKit", "Signposts");
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});
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return handle;
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}
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