blob: 7263e7a1f4ce10313593aae6bb74d1921356410d [file] [log] [blame]
/*
* 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>
#include <cstdlib>
#include <dispatch/dispatch.h>
#include <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;
}