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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "nsImportModule.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozJSModuleLoader.h"
#include "nsContentUtils.h"
#include "nsExceptionHandler.h"
#include "nsPrintfCString.h"
#include "xpcpublic.h"
#include "xpcprivate.h"
#include "js/PropertyAndElement.h" // JS_GetProperty
using mozilla::dom::AutoJSAPI;
namespace mozilla {
namespace loader {
static void AnnotateCrashReportWithJSException(JSContext* aCx,
const char* aURI) {
JS::RootedValue exn(aCx);
if (JS_GetPendingException(aCx, &exn)) {
JS_ClearPendingException(aCx);
JSAutoRealm ar(aCx, xpc::PrivilegedJunkScope());
JS_WrapValue(aCx, &exn);
nsAutoCString file;
uint32_t line;
uint32_t column;
nsAutoString msg;
nsContentUtils::ExtractErrorValues(aCx, exn, file, &line, &column, msg);
nsPrintfCString errorString("Failed to load module \"%s\": %s:%u:%u: %s",
aURI, file.get(), line, column,
NS_ConvertUTF16toUTF8(msg).get());
CrashReporter::RecordAnnotationNSCString(
CrashReporter::Annotation::JSModuleLoadError, errorString);
}
}
nsresult ImportESModule(const char* aURI, const char* aExportName,
const nsIID& aIID, void** aResult, bool aInfallible) {
AutoJSAPI jsapi;
MOZ_ALWAYS_TRUE(jsapi.Init(xpc::PrivilegedJunkScope()));
JSContext* cx = jsapi.cx();
JS::RootedObject moduleNamespace(cx);
nsresult rv = mozJSModuleLoader::Get()->ImportESModule(
cx, nsDependentCString(aURI), &moduleNamespace);
if (NS_WARN_IF(NS_FAILED(rv))) {
if (aInfallible) {
AnnotateCrashReportWithJSException(cx, aURI);
MOZ_CRASH_UNSAFE_PRINTF("Failed to load critical module \"%s\"", aURI);
}
return rv;
}
if (aExportName) {
JS::RootedValue namedExport(cx);
if (!JS_GetProperty(cx, moduleNamespace, aExportName, &namedExport)) {
return NS_ERROR_FAILURE;
}
if (!namedExport.isObject()) {
return NS_ERROR_XPC_BAD_CONVERT_JS;
}
moduleNamespace.set(&namedExport.toObject());
}
return nsXPConnect::XPConnect()->WrapJS(cx, moduleNamespace, aIID, aResult);
}
} // namespace loader
} // namespace mozilla
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