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/* -*- 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 "jsapi.h"
#include "nsIXPConnect.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsIComponentManager.h"
#include "nsString.h"
#include "nsIPrefService.h"
#include "nspr.h"
#include "mozilla/Attributes.h"
#include "mozilla/Maybe.h"
#include "nsContentUtils.h"
#include "nsIScriptSecurityManager.h"
#include "nsJSPrincipals.h"
#include "nsIScriptError.h"
#include "jswrapper.h"
extern mozilla::LazyLogModule MCD;
using mozilla::AutoSafeJSContext;
using mozilla::dom::AutoJSAPI;
//*****************************************************************************
static JS::PersistentRooted<JSObject *> autoconfigSb;
nsresult CentralizedAdminPrefManagerInit()
{
nsresult rv;
// If the sandbox is already created, no need to create it again.
if (autoconfigSb.initialized())
return NS_OK;
// Grab XPConnect.
nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID(), &rv);
if (NS_FAILED(rv)) {
return rv;
}
// Grab the system principal.
nsCOMPtr<nsIPrincipal> principal;
nsContentUtils::GetSecurityManager()->GetSystemPrincipal(getter_AddRefs(principal));
// Create a sandbox.
AutoSafeJSContext cx;
JS::Rooted<JSObject*> sandbox(cx);
rv = xpc->CreateSandbox(cx, principal, sandbox.address());
NS_ENSURE_SUCCESS(rv, rv);
// Unwrap, store and root the sandbox.
NS_ENSURE_STATE(sandbox);
autoconfigSb.init(cx, js::UncheckedUnwrap(sandbox));
return NS_OK;
}
nsresult CentralizedAdminPrefManagerFinish()
{
if (autoconfigSb.initialized()) {
AutoSafeJSContext cx;
autoconfigSb.reset();
JS_MaybeGC(cx);
}
return NS_OK;
}
nsresult EvaluateAdminConfigScript(const char *js_buffer, size_t length,
const char *filename, bool bGlobalContext,
bool bCallbacks, bool skipFirstLine)
{
nsresult rv = NS_OK;
if (skipFirstLine) {
/* In order to protect the privacy of the JavaScript preferences file
* from loading by the browser, we make the first line unparseable
* by JavaScript. We must skip that line here before executing
* the JavaScript code.
*/
unsigned int i = 0;
while (i < length) {
char c = js_buffer[i++];
if (c == '\r') {
if (js_buffer[i] == '\n')
i++;
break;
}
if (c == '\n')
break;
}
length -= i;
js_buffer += i;
}
// Grab XPConnect.
nsCOMPtr<nsIXPConnect> xpc = do_GetService(nsIXPConnect::GetCID(), &rv);
if (NS_FAILED(rv)) {
return rv;
}
AutoJSAPI jsapi;
if (!jsapi.Init(autoconfigSb)) {
return NS_ERROR_UNEXPECTED;
}
JSContext* cx = jsapi.cx();
nsAutoCString script(js_buffer, length);
JS::RootedValue v(cx);
nsString convertedScript;
bool isUTF8 = IsUTF8(script);
if (isUTF8) {
convertedScript = NS_ConvertUTF8toUTF16(script);
} else {
nsContentUtils::ReportToConsoleNonLocalized(
NS_LITERAL_STRING("Your AutoConfig file is ASCII. Please convert it to UTF-8."),
nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("autoconfig"),
nullptr);
/* If the length is 0, the conversion failed. Fallback to ASCII */
convertedScript = NS_ConvertASCIItoUTF16(script);
}
JS::Rooted<JS::Value> value(cx, JS::BooleanValue(isUTF8));
if (!JS_DefineProperty(cx, autoconfigSb, "gIsUTF8", value, JSPROP_ENUMERATE)) {
return NS_ERROR_UNEXPECTED;
}
rv = xpc->EvalInSandboxObject(convertedScript, filename, cx,
autoconfigSb, JSVERSION_LATEST, &v);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
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