/*
 * Copyright (C) 2015-2023 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.
 */

#include "config.h"
#include "JSRemoteInspector.h"

#include "JSGlobalObjectConsoleClient.h"
#include <wtf/ProcessID.h>

#if ENABLE(REMOTE_INSPECTOR)
#include "RemoteInspector.h"
#endif

#if PLATFORM(COCOA)
#include <wtf/cocoa/Entitlements.h>
#include <wtf/cocoa/RuntimeApplicationChecksCocoa.h>
#endif

using namespace Inspector;

static std::optional<bool> remoteInspectionEnabledByDefault = std::nullopt;
static bool inspectionFollowsInternalPolicies = true;

void JSRemoteInspectorDisableAutoStart(void)
{
#if ENABLE(REMOTE_INSPECTOR)
    RemoteInspector::startDisabled();
#endif
}

void JSRemoteInspectorStart(void)
{
#if ENABLE(REMOTE_INSPECTOR)
    RemoteInspector::singleton();
#endif
}

void JSRemoteInspectorSetParentProcessInformation(ProcessID pid, const uint8_t* auditData, size_t auditLength)
{
#if ENABLE(REMOTE_INSPECTOR) && PLATFORM(COCOA)
    RetainPtr<CFDataRef> auditDataRef = adoptCF(CFDataCreate(kCFAllocatorDefault, auditData, auditLength));
    RemoteInspector::singleton().setParentProcessInformation(pid, auditDataRef);
#else
    UNUSED_PARAM(pid);
    UNUSED_PARAM(auditData);
    UNUSED_PARAM(auditLength);
#endif
}

void JSRemoteInspectorSetLogToSystemConsole(bool logToSystemConsole)
{
    JSGlobalObjectConsoleClient::setLogToSystemConsole(logToSystemConsole);
}

#if PLATFORM(COCOA)
static bool mainProcessHasEntitlement(ASCIILiteral entitlement, std::optional<audit_token_t> parentProcessAuditToken)
{
    if (parentProcessAuditToken)
        return WTF::hasEntitlement(*parentProcessAuditToken, entitlement);

    return WTF::processHasEntitlement(entitlement);
}
#endif

static bool defaultStateForRemoteInspectionEnabledByDefault(void)
{
#if PLATFORM(COCOA)
    auto parentProcessAuditToken = RemoteInspector::singleton().parentProcessAuditToken();

    if (!linkedOnOrAfterSDKWithBehavior(SDKAlignedBehavior::InspectableDefaultsToDisabled)) {
#if PLATFORM(MAC)
        auto developerProvisioningEntitlement = "com.apple.security.get-task-allow"_s;
#else
        auto developerProvisioningEntitlement = "get-task-allow"_s;
#endif
        if (mainProcessHasEntitlement(developerProvisioningEntitlement, parentProcessAuditToken)) {
            SAFE_WTFLOGALWAYS("Inspection is enabled by default for process or parent application with '%s' entitlement linked against old SDK. Use `inspectable` API to enable inspection on newer SDKs.", developerProvisioningEntitlement);
            return true;
        }
    }

#if PLATFORM(MAC)
    auto deprecatedWebInspectorAllowEntitlement = "com.apple.webinspector.allow"_s;
#else
    auto deprecatedWebInspectorAllowEntitlement = "com.apple.private.webinspector.allow-remote-inspection"_s;
#endif
    if (mainProcessHasEntitlement(deprecatedWebInspectorAllowEntitlement, parentProcessAuditToken)) {
        SAFE_WTFLOGALWAYS("Inspection is enabled by default for process or parent application with deprecated '%s' entitlement. Use `inspectable` API to enable inspection instead.", deprecatedWebInspectorAllowEntitlement);
        return true;
    }

    return false;
#else
    return true;
#endif // not PLATFORM(COCOA)
}

bool JSRemoteInspectorGetInspectionEnabledByDefault(void)
{
    if (!remoteInspectionEnabledByDefault)
        remoteInspectionEnabledByDefault = defaultStateForRemoteInspectionEnabledByDefault();

    return remoteInspectionEnabledByDefault.value();
}

void JSRemoteInspectorSetInspectionEnabledByDefault(bool enabledByDefault)
{
    remoteInspectionEnabledByDefault = enabledByDefault;
}

bool JSRemoteInspectorGetInspectionFollowsInternalPolicies(void)
{
    return inspectionFollowsInternalPolicies;
}

void JSRemoteInspectorSetInspectionFollowsInternalPolicies(bool followsInternalPolicies)
{
    inspectionFollowsInternalPolicies = followsInternalPolicies;
}