mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010-2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Michael Wu <mwu@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsAutoPtr.h"
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#include "nsScriptLoader.h"
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#include "jsapi.h"
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#include "jsdbgapi.h"
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#include "jsxdrapi.h"
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#include "nsJSPrincipals.h"
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#include "mozilla/scache/StartupCache.h"
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#include "mozilla/scache/StartupCacheUtils.h"
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using namespace mozilla::scache;
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// We only serialize scripts with system principals. So we don't serialize the
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// principals when writing a script. Instead, when reading it back, we set the
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// principals to the system principals.
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nsresult
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ReadCachedScript(StartupCache* cache, nsACString &uri, JSContext *cx,
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nsIPrincipal *systemPrincipal, JSScript **script)
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{
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nsAutoArrayPtr<char> buf;
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PRUint32 len;
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nsresult rv = cache->GetBuffer(PromiseFlatCString(uri).get(),
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getter_Transfers(buf), &len);
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if (NS_FAILED(rv)) {
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return rv; // don't warn since NOT_AVAILABLE is an ok error
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}
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JSXDRState *xdr = ::JS_XDRNewMem(cx, JSXDR_DECODE);
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if (!xdr) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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::JS_XDRMemSetData(xdr, buf, len);
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::JS_XDRSetPrincipals(xdr, nsJSPrincipals::get(systemPrincipal), nsnull);
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JSBool ok = ::JS_XDRScript(xdr, script);
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// Prevent XDR from automatically freeing the buffer.
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::JS_XDRMemSetData(xdr, NULL, 0);
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::JS_XDRDestroy(xdr);
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return ok ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult
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WriteCachedScript(StartupCache* cache, nsACString &uri, JSContext *cx,
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nsIPrincipal *systemPrincipal, JSScript *script)
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{
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MOZ_ASSERT(JS_GetScriptPrincipals(script) == nsJSPrincipals::get(systemPrincipal));
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MOZ_ASSERT(JS_GetScriptOriginPrincipals(script) == nsJSPrincipals::get(systemPrincipal));
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JSXDRState *xdr = ::JS_XDRNewMem(cx, JSXDR_ENCODE);
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if (!xdr) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv;
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if (!::JS_XDRScript(xdr, &script)) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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} else {
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uint32_t size;
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char* data = static_cast<char *>(::JS_XDRMemGetData(xdr, &size));
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MOZ_ASSERT(size);
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rv = cache->PutBuffer(PromiseFlatCString(uri).get(), data, size);
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}
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::JS_XDRDestroy(xdr);
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return rv;
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}
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