caps/nsJSPrincipals.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "xpcprivate.h"
   7 #include "nsString.h"
   8 #include "nsIObjectOutputStream.h"
   9 #include "nsIObjectInputStream.h"
  10 #include "nsJSPrincipals.h"
  11 #include "plstr.h"
  12 #include "nsXPIDLString.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsIJSRuntimeService.h"
  15 #include "nsIServiceManager.h"
  16 #include "nsMemory.h"
  17 #include "nsStringBuffer.h"
  18
  19 // for mozilla::dom::workers::kJSPrincipalsDebugToken
  20 #include "mozilla/dom/workers/Workers.h"
  21
  22 /* static */ bool
  23 nsJSPrincipals::Subsume(JSPrincipals *jsprin, JSPrincipals *other)
  24 {
  25     bool result;
  26     nsresult rv = nsJSPrincipals::get(jsprin)->Subsumes(nsJSPrincipals::get(other), &result);
  27     return NS_SUCCEEDED(rv) && result;
  28 }
  29
  30 /* static */ void
  31 nsJSPrincipals::Destroy(JSPrincipals *jsprin)
  32 {
  33     // The JS runtime can call this method during the last GC when
  34     // nsScriptSecurityManager is destroyed. So we must not assume here that
  35     // the security manager still exists.
  36
  37     nsJSPrincipals *nsjsprin = nsJSPrincipals::get(jsprin);
  38
  39     // We need to destroy the nsIPrincipal. We'll do this by adding
  40     // to the refcount and calling release
  41
  42 #ifdef NS_BUILD_REFCNT_LOGGING
  43     // The refcount logging considers AddRef-to-1 to indicate creation,
  44     // so trick it into thinking it's otherwise, but balance the
  45     // Release() we do below.
  46     nsjsprin->refcount++;
  47     nsjsprin->AddRef();
  48     nsjsprin->refcount--;
  49 #else
  50     nsjsprin->refcount++;
  51 #endif
  52     nsjsprin->Release();
  53 }
  54
  55 #ifdef DEBUG
  56
  57 // Defined here so one can do principals->dump() in the debugger
  58 JS_EXPORT_API(void)
  59 JSPrincipals::dump()
  60 {
  61     if (debugToken == nsJSPrincipals::DEBUG_TOKEN) {
  62         static_cast<nsJSPrincipals *>(this)->dumpImpl();
  63     } else if (debugToken == mozilla::dom::workers::kJSPrincipalsDebugToken) {
  64         fprintf(stderr, "Web Worker principal singleton (%p)\n", this);
  65     } else {
  66         fprintf(stderr,
  67                 "!!! JSPrincipals (%p) is not nsJSPrincipals instance - bad token: "
  68                 "actual=0x%x expected=0x%x\n",
  69                 this, unsigned(debugToken), unsigned(nsJSPrincipals::DEBUG_TOKEN));
  70     }
  71 }
  72
  73 #endif