caps/nsJSPrincipals.cpp
author Xidorn Quan <quanxunzhen@gmail.com>
Wed, 08 Apr 2015 08:40:31 +1200
changeset 238005 9cfea55b5e952ce1e09908dc58721fce21c80e4d
parent 194421 2d3418a4639971243b7375b38d4e33283403eb52
child 244071 d99fd0b0a9734668292428d20163eea2e02789a6
permissions -rw-r--r--
Bug 1141931 part 6 - Move Ruby{Segment,Column}Enumerator to RubyUtils. r=dholbert

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "xpcprivate.h"
#include "nsString.h"
#include "nsIObjectOutputStream.h"
#include "nsIObjectInputStream.h"
#include "nsJSPrincipals.h"
#include "plstr.h"
#include "nsXPIDLString.h"
#include "nsCOMPtr.h"
#include "nsIJSRuntimeService.h"
#include "nsIServiceManager.h"
#include "nsMemory.h"
#include "nsStringBuffer.h"

// for mozilla::dom::workers::kJSPrincipalsDebugToken
#include "mozilla/dom/workers/Workers.h"

/* static */ bool
nsJSPrincipals::Subsume(JSPrincipals *jsprin, JSPrincipals *other)
{
    bool result;
    nsresult rv = nsJSPrincipals::get(jsprin)->Subsumes(nsJSPrincipals::get(other), &result);
    return NS_SUCCEEDED(rv) && result;
}

/* static */ void
nsJSPrincipals::Destroy(JSPrincipals *jsprin)
{
    // The JS runtime can call this method during the last GC when
    // nsScriptSecurityManager is destroyed. So we must not assume here that
    // the security manager still exists.

    nsJSPrincipals *nsjsprin = nsJSPrincipals::get(jsprin);

    // We need to destroy the nsIPrincipal. We'll do this by adding
    // to the refcount and calling release

#ifdef NS_BUILD_REFCNT_LOGGING
    // The refcount logging considers AddRef-to-1 to indicate creation,
    // so trick it into thinking it's otherwise, but balance the
    // Release() we do below.
    nsjsprin->refcount++;
    nsjsprin->AddRef();
    nsjsprin->refcount--;
#else
    nsjsprin->refcount++;
#endif
    nsjsprin->Release();
}

#ifdef DEBUG

// Defined here so one can do principals->dump() in the debugger
JS_EXPORT_API(void)
JSPrincipals::dump()
{
    if (debugToken == nsJSPrincipals::DEBUG_TOKEN) {
        static_cast<nsJSPrincipals *>(this)->dumpImpl();
    } else if (debugToken == mozilla::dom::workers::kJSPrincipalsDebugToken) {
        fprintf(stderr, "Web Worker principal singleton (%p)\n", this);
    } else {
        fprintf(stderr,
                "!!! JSPrincipals (%p) is not nsJSPrincipals instance - bad token: "
                "actual=0x%x expected=0x%x\n",
                this, unsigned(debugToken), unsigned(nsJSPrincipals::DEBUG_TOKEN));
    }
}

#endif