1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/extensions/pref/autoconfig/src/nsJSConfigTriggers.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,122 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifdef MOZ_LOGGING
1.10 +// sorry, this has to be before the pre-compiled header
1.11 +#define FORCE_PR_LOG /* Allow logging in the release build */
1.12 +#endif
1.13 +#include "jsapi.h"
1.14 +#include "nsIXPCSecurityManager.h"
1.15 +#include "nsIXPConnect.h"
1.16 +#include "nsIJSRuntimeService.h"
1.17 +#include "nsCOMPtr.h"
1.18 +#include "nsIServiceManager.h"
1.19 +#include "nsIComponentManager.h"
1.20 +#include "nsString.h"
1.21 +#include "nsIPrefService.h"
1.22 +#include "nspr.h"
1.23 +#include "mozilla/Attributes.h"
1.24 +#include "mozilla/Maybe.h"
1.25 +#include "nsContentUtils.h"
1.26 +#include "nsCxPusher.h"
1.27 +#include "nsIScriptSecurityManager.h"
1.28 +#include "nsJSPrincipals.h"
1.29 +#include "jswrapper.h"
1.30 +
1.31 +extern PRLogModuleInfo *MCD;
1.32 +using mozilla::AutoSafeJSContext;
1.33 +
1.34 +//*****************************************************************************
1.35 +
1.36 +static mozilla::Maybe<JS::PersistentRooted<JSObject *> > autoconfigSb;
1.37 +
1.38 +nsresult CentralizedAdminPrefManagerInit()
1.39 +{
1.40 + nsresult rv;
1.41 +
1.42 + // If the sandbox is already created, no need to create it again.
1.43 + if (!autoconfigSb.empty())
1.44 + return NS_OK;
1.45 +
1.46 + // Grab XPConnect.
1.47 + nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID(), &rv);
1.48 + if (NS_FAILED(rv)) {
1.49 + return rv;
1.50 + }
1.51 +
1.52 + // Grab the system principal.
1.53 + nsCOMPtr<nsIPrincipal> principal;
1.54 + nsContentUtils::GetSecurityManager()->GetSystemPrincipal(getter_AddRefs(principal));
1.55 +
1.56 +
1.57 + // Create a sandbox.
1.58 + AutoSafeJSContext cx;
1.59 + nsCOMPtr<nsIXPConnectJSObjectHolder> sandbox;
1.60 + rv = xpc->CreateSandbox(cx, principal, getter_AddRefs(sandbox));
1.61 + NS_ENSURE_SUCCESS(rv, rv);
1.62 +
1.63 + // Unwrap, store and root the sandbox.
1.64 + NS_ENSURE_STATE(sandbox->GetJSObject());
1.65 + autoconfigSb.construct(cx, js::UncheckedUnwrap(sandbox->GetJSObject()));
1.66 +
1.67 + return NS_OK;
1.68 +}
1.69 +
1.70 +nsresult CentralizedAdminPrefManagerFinish()
1.71 +{
1.72 + if (!autoconfigSb.empty()) {
1.73 + AutoSafeJSContext cx;
1.74 + autoconfigSb.destroy();
1.75 + JS_MaybeGC(cx);
1.76 + }
1.77 + return NS_OK;
1.78 +}
1.79 +
1.80 +nsresult EvaluateAdminConfigScript(const char *js_buffer, size_t length,
1.81 + const char *filename, bool bGlobalContext,
1.82 + bool bCallbacks, bool skipFirstLine)
1.83 +{
1.84 + nsresult rv = NS_OK;
1.85 +
1.86 + if (skipFirstLine) {
1.87 + /* In order to protect the privacy of the JavaScript preferences file
1.88 + * from loading by the browser, we make the first line unparseable
1.89 + * by JavaScript. We must skip that line here before executing
1.90 + * the JavaScript code.
1.91 + */
1.92 + unsigned int i = 0;
1.93 + while (i < length) {
1.94 + char c = js_buffer[i++];
1.95 + if (c == '\r') {
1.96 + if (js_buffer[i] == '\n')
1.97 + i++;
1.98 + break;
1.99 + }
1.100 + if (c == '\n')
1.101 + break;
1.102 + }
1.103 +
1.104 + length -= i;
1.105 + js_buffer += i;
1.106 + }
1.107 +
1.108 + // Grab XPConnect.
1.109 + nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID(), &rv);
1.110 + if (NS_FAILED(rv)) {
1.111 + return rv;
1.112 + }
1.113 +
1.114 + AutoSafeJSContext cx;
1.115 + JSAutoCompartment ac(cx, autoconfigSb.ref());
1.116 +
1.117 + nsAutoCString script(js_buffer, length);
1.118 + JS::RootedValue v(cx);
1.119 + rv = xpc->EvalInSandboxObject(NS_ConvertASCIItoUTF16(script), filename, cx, autoconfigSb.ref(),
1.120 + /* returnStringOnly = */ false, &v);
1.121 + NS_ENSURE_SUCCESS(rv, rv);
1.122 +
1.123 + return NS_OK;
1.124 +}
1.125 +
