JSBool report_ruby_error_in_js(JohnsonRuntime* runtime, int state, VALUE old_errinfo)
{
JSContext * context = johnson_get_current_context(runtime);
assert(state);
switch (state)
{
case TAG_RAISE:
{
VALUE local_error = ruby_errinfo;
jsval js_err;
ruby_errinfo = old_errinfo;
if (!convert_to_js(runtime, local_error, &js_err))
return JS_FALSE;
JS_SetPendingException(context, js_err);
return JS_FALSE;
}
case TAG_THROW:
// FIXME: This should be propagated to JS... as an exception?
default:
{
JSString* str = JS_NewStringCopyZ(context, "Unexpected longjmp from ruby!");
if (str)
JS_SetPendingException(context, STRING_TO_JSVAL(str));
return JS_FALSE;
}
}
}
JSBool
gjs_move_exception(JSContext *src_context,
JSContext *dest_context)
{
JSBool success;
JS_BeginRequest(src_context);
JS_BeginRequest(dest_context);
/* NOTE: src and dest could be the same. */
jsval exc;
if (JS_GetPendingException(src_context, &exc)) {
if (src_context != dest_context) {
/* try to add the current stack of dest_context to the
* stack trace of exc */
try_to_chain_stack_trace(src_context, dest_context, exc);
/* move the exception to dest_context */
JS_SetPendingException(dest_context, exc);
JS_ClearPendingException(src_context);
}
success = JS_TRUE;
} else {
success = JS_FALSE;
}
JS_EndRequest(dest_context);
JS_EndRequest(src_context);
return success;
}
/* void throwArg (); */
NS_IMETHODIMP
xpctestEcho::ThrowArg(void)
{
GET_CALL_CONTEXT;
if(NS_FAILED(rv) || !cc)
return NS_ERROR_FAILURE;
nsCOMPtr<nsISupports> callee;
if(NS_FAILED(cc->GetCallee(getter_AddRefs(callee))) ||
callee != static_cast<nsIEcho*>(this))
return NS_ERROR_FAILURE;
PRUint32 argc;
if(NS_FAILED(cc->GetArgc(&argc)) || !argc)
return NS_OK;
jsval* argv;
JSContext* cx;
if(NS_FAILED(cc->GetArgvPtr(&argv)) ||
NS_FAILED(cc->GetJSContext(&cx)))
return NS_ERROR_FAILURE;
JS_SetPendingException(cx, argv[0]);
return NS_OK;
}
JSBool report_ruby_error_in_js(JohnsonRuntime* runtime, int state, VALUE old_errinfo)
{
JSContext * context = johnson_get_current_context(runtime);
assert(state);
switch (state)
{
case TAG_RAISE:
{
VALUE local_error = ruby_errinfo;
ruby_errinfo = old_errinfo;
local_error = rb_funcall(local_error, rb_intern("inspect"), 0);
JS_ReportError(context, StringValuePtr(local_error));
return JS_FALSE ;
}
case TAG_THROW:
// FIXME: This should be propagated to JS... as an exception?
default:
{
JSString* str = JS_NewStringCopyZ(context, "Unexpected longjmp from ruby!");
if (str)
JS_SetPendingException(context, STRING_TO_JSVAL(str));
return JS_FALSE;
}
}
}
/*
* Common subroutine of generator_(next|send|throw|close) methods.
*/
static JSBool
generator_op(JSContext *cx, JSGeneratorOp op, jsval *vp, uintN argc)
{
JSObject *obj;
JSGenerator *gen;
jsval arg;
obj = JS_THIS_OBJECT(cx, vp);
if (!JS_InstanceOf(cx, obj, &js_GeneratorClass, vp + 2))
return JS_FALSE;
gen = (JSGenerator *) JS_GetPrivate(cx, obj);
if (gen == NULL) {
/* This happens when obj is the generator prototype. See bug 352885. */
goto closed_generator;
}
if (gen->state == JSGEN_NEWBORN) {
switch (op) {
case JSGENOP_NEXT:
case JSGENOP_THROW:
break;
case JSGENOP_SEND:
if (argc >= 1 && !JSVAL_IS_VOID(vp[2])) {
js_ReportValueError(cx, JSMSG_BAD_GENERATOR_SEND,
JSDVG_SEARCH_STACK, vp[2], NULL);
return JS_FALSE;
}
break;
default:
JS_ASSERT(op == JSGENOP_CLOSE);
gen->state = JSGEN_CLOSED;
return JS_TRUE;
}
} else if (gen->state == JSGEN_CLOSED) {
closed_generator:
switch (op) {
case JSGENOP_NEXT:
case JSGENOP_SEND:
return js_ThrowStopIteration(cx);
case JSGENOP_THROW:
JS_SetPendingException(cx, argc >= 1 ? vp[2] : JSVAL_VOID);
return JS_FALSE;
default:
JS_ASSERT(op == JSGENOP_CLOSE);
return JS_TRUE;
}
}
arg = ((op == JSGENOP_SEND || op == JSGENOP_THROW) && argc != 0)
? vp[2]
: JSVAL_VOID;
if (!SendToGenerator(cx, op, obj, gen, arg))
return JS_FALSE;
*vp = gen->frame.rval;
return JS_TRUE;
}
// static
JSBool
XPCThrower::ThrowExceptionObject(JSContext* cx, nsIException* e)
{
JSBool success = JS_FALSE;
if(e)
{
nsCOMPtr<nsIXPCException> xpcEx;
jsval thrown;
nsXPConnect* xpc;
// If we stored the original thrown JS value in the exception
// (see XPCConvert::ConstructException) and we are in a web
// context (i.e., not chrome), rethrow the original value.
if(!IsCallerChrome(cx) &&
(xpcEx = do_QueryInterface(e)) &&
NS_SUCCEEDED(xpcEx->StealJSVal(&thrown)))
{
if (!JS_WrapValue(cx, &thrown))
return JS_FALSE;
JS_SetPendingException(cx, thrown);
success = JS_TRUE;
}
else if((xpc = nsXPConnect::GetXPConnect()))
{
JSObject* glob = JS_GetScopeChain(cx);
if(!glob)
return JS_FALSE;
glob = JS_GetGlobalForObject(cx, glob);
nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
nsresult rv = xpc->WrapNative(cx, glob, e,
NS_GET_IID(nsIException),
getter_AddRefs(holder));
if(NS_SUCCEEDED(rv) && holder)
{
JSObject* obj;
if(NS_SUCCEEDED(holder->GetJSObject(&obj)))
{
JS_SetPendingException(cx, OBJECT_TO_JSVAL(obj));
success = JS_TRUE;
}
}
}
}
return success;
}
/*
* Class: com_google_gwt_dev_shell_moz_LowLevelMoz
* Method: _raiseJavaScriptException
* Signature: ()Z
*/
extern "C" JNIEXPORT jboolean JNICALL
Java_com_google_gwt_dev_shell_moz_LowLevelMoz__1raiseJavaScriptException
(JNIEnv* env, jclass)
{
Tracer tracer("LowLevelMoz._raiseJavaScriptException");
JS_SetPendingException(JsRootedValue::currentContext(), JSVAL_NULL);
return JNI_TRUE;
}
void
AutoJSAPI::ReportException()
{
MOZ_ASSERT(OwnsErrorReporting(), "This is not our exception to report!");
if (!HasException()) {
return;
}
// AutoJSAPI uses a JSAutoNullableCompartment, and may be in a null
// compartment when the destructor is called. However, the JS engine
// requires us to be in a compartment when we fetch the pending exception.
// In this case, we enter the privileged junk scope and don't dispatch any
// error events.
JS::Rooted<JSObject*> errorGlobal(cx(), JS::CurrentGlobalOrNull(cx()));
if (!errorGlobal) {
if (mIsMainThread) {
errorGlobal = xpc::PrivilegedJunkScope();
} else {
errorGlobal = workers::GetCurrentThreadWorkerGlobal();
}
}
JSAutoCompartment ac(cx(), errorGlobal);
JS::Rooted<JS::Value> exn(cx());
js::ErrorReport jsReport(cx());
if (StealException(&exn) && jsReport.init(cx(), exn)) {
if (mIsMainThread) {
RefPtr<xpc::ErrorReport> xpcReport = new xpc::ErrorReport();
RefPtr<nsGlobalWindow> win = xpc::WindowGlobalOrNull(errorGlobal);
nsPIDOMWindowInner* inner = win ? win->AsInner() : nullptr;
xpcReport->Init(jsReport.report(), jsReport.message(),
nsContentUtils::IsCallerChrome(),
inner ? inner->WindowID() : 0);
if (inner) {
DispatchScriptErrorEvent(inner, JS_GetRuntime(cx()), xpcReport, exn);
} else {
xpcReport->LogToConsole();
}
} else {
// On a worker, we just use the worker error reporting mechanism and don't
// bother with xpc::ErrorReport. This will ensure that all the right
// events (which are a lot more complicated than in the window case) get
// fired.
workers::WorkerPrivate* worker = workers::GetCurrentThreadWorkerPrivate();
MOZ_ASSERT(worker);
MOZ_ASSERT(worker->GetJSContext() == cx());
// Before invoking ReportError, put the exception back on the context,
// because it may want to put it in its error events and has no other way
// to get hold of it. After we invoke ReportError, clear the exception on
// cx(), just in case ReportError didn't.
JS_SetPendingException(cx(), exn);
worker->ReportError(cx(), jsReport.message(), jsReport.report());
ClearException();
}
} else {
NS_WARNING("OOMed while acquiring uncaught exception from JSAPI");
ClearException();
}
}
JSBool
js_ThrowStopIteration(JSContext *cx)
{
jsval v;
JS_ASSERT(!JS_IsExceptionPending(cx));
if (js_FindClassObject(cx, NULL, INT_TO_JSID(JSProto_StopIteration), &v))
JS_SetPendingException(cx, v);
return JS_FALSE;
}
void
ThrowDOMExceptionForNSResult(JSContext* aCx, nsresult aNSResult)
{
JSObject* exception = DOMException::Create(aCx, aNSResult);
if (!exception) {
return;
}
JS_SetPendingException(aCx, OBJECT_TO_JSVAL(exception));
}
static JSBool DriverManager_getConnection(JSContext *cx, unsigned argc, jsval *vp)
{
jsval drivers;
JS_LookupProperty(cx, JS_THIS_OBJECT(cx, vp), "drivers", &drivers);
// FIXME check return code; check that drivers is an array
JSObject *obj = JSVAL_TO_OBJECT(drivers);
uint32_t len, i;
JS_GetArrayLength(cx, obj, &len);
jsval connect_argv[2] = {JS_ARGV(cx, vp)[0]};
if (argc == 2) {
/* Caller passed "info" object, so we forward it as-is */
connect_argv[1] = JS_ARGV(cx, vp)[1];
} else {
JSObject *info = JS_NewObject(cx, NULL, NULL, NULL); // FIXME root it to avoid GC
if (argc > 1)
JS_DefineProperty(cx, info, "user", JS_ARGV(cx, vp)[1], NULL, NULL, JSPROP_ENUMERATE);
if (argc > 2)
JS_DefineProperty(cx, info, "password", JS_ARGV(cx, vp)[2], NULL, NULL, JSPROP_ENUMERATE);
connect_argv[1] = OBJECT_TO_JSVAL(info);
};
jsval reason = JSVAL_NULL;
for (i = 0; i < len; i++) {
jsval driver, rval;
JS_GetElement(cx, obj, i, &driver);
if (!JS_CallFunctionName(cx, JSVAL_TO_OBJECT(driver), "connect", 2, &connect_argv[0], &rval)) {
if (JSVAL_IS_NULL(reason))
JS_GetPendingException(cx, &reason);
continue;
}
if (JSVAL_IS_NULL(rval))
continue;
JS_SET_RVAL(cx, vp, rval);
return JS_TRUE;
}
if (JSVAL_IS_NULL(reason)) {
JSString *url_str = JS_ValueToString(cx, JS_ARGV(cx, vp)[0]);
// FIXME check return value
// FIXME root url_str (protect from GC) -> https://developer.mozilla.org/en-US/docs/SpiderMonkey/JSAPI_Reference/JS_ValueToString
char *url = JS_EncodeString(cx, url_str);
JS_ReportError(cx, "No suitable driver found for %s", url);
JS_free(cx, url);
} else
JS_SetPendingException(cx, reason);
JS_SET_RVAL(cx, vp, JSVAL_NULL);
return JS_FALSE;
}
void ScriptInterface::ReportError(const char* msg)
{
// JS_ReportError by itself doesn't seem to set a JS-style exception, and so
// script callers will be unable to catch anything. So use JS_SetPendingException
// to make sure there really is a script-level exception. But just set it to undefined
// because there's not much value yet in throwing a real exception object.
JS_SetPendingException(m->m_cx, JSVAL_VOID);
// And report the actual error
JS_ReportError(m->m_cx, "%s", msg);
// TODO: Why doesn't JS_ReportPendingException(m->m_cx); work?
}
static void
js_txn_deadlock(JSContext *cx, js_db_t *jd)
{
if(JS_IsExceptionPending(cx))
return;
if(jd->jd_debug)
TRACE(TRACE_DEBUG, "JS", "Raising deadlock exception");
JSObject *obj = JS_NewObjectWithGivenProto(cx, &db_deadlock_exn, NULL, NULL);
JS_SetPendingException(cx, OBJECT_TO_JSVAL(obj));
}
/**
* Calls a method on a Java object and returns a two-element JS array, with
* the first element being a boolean flag indicating an exception was thrown,
* and the second element is the actual return value or exception.
*/
JSBool JavaObject::invokeJava(JSContext* ctx, SessionData* data,
const gwt::Value& javaThis, int dispId, int numArgs, const jsval* jsargs,
jsval* rval) {
HostChannel* channel = data->getHostChannel();
SessionHandler* handler = data->getSessionHandler();
scoped_array<gwt::Value> args(new gwt::Value[numArgs]);
for (int i = 0; i < numArgs; ++i) {
data->makeValueFromJsval(args[i], ctx, jsargs[i]);
}
bool isException = false;
gwt::Value returnValue;
if (!InvokeMessage::send(*channel, javaThis, dispId, numArgs, args.get())) {
Debug::log(Debug::Debugging) << "JavaObject::call failed to send invoke message" << Debug::flush;
} else {
Debug::log(Debug::Spam) << " return from invoke" << Debug::flush;
scoped_ptr<ReturnMessage> retMsg(channel->reactToMessagesWhileWaitingForReturn(handler));
if (!retMsg.get()) {
Debug::log(Debug::Debugging) << "JavaObject::call failed to get return value" << Debug::flush;
} else {
isException = retMsg->isException();
returnValue = retMsg->getReturnValue();
}
}
// Since we can set exceptions normally, we always return false to the
// wrapper function and set the exception ourselves if one occurs.
// TODO: cleanup exception case
jsval retvalArray[] = {JSVAL_FALSE, JSVAL_VOID};
JSObject* retval = JS_NewArrayObject(ctx, 2, retvalArray);
*rval = OBJECT_TO_JSVAL(retval);
jsval retJsVal;
Debug::log(Debug::Spam) << " result is " << returnValue << Debug::flush;
data->makeJsvalFromValue(retJsVal, ctx, returnValue);
if (isException) {
JS::MutableHandleValue argHandle = JS::MutableHandleValue::fromMarkedLocation(&retJsVal);
JS_SetPendingException(ctx, argHandle);
return false;
}
#if GECKO_VERSION >= 26000
JS::Rooted<JS::Value> tmp(ctx);
tmp = retJsVal;
#else
jsval tmp = retJsVal;
#endif
if (!JS_SetElement(ctx, retval, 1, &tmp)) {
Debug::log(Debug::Error) << "Error setting return value element in array"
<< Debug::flush;
return false;
}
return true;
}
JSBool
jsd_SetException(JSDContext* jsdc, JSDThreadState* jsdthreadstate,
JSDValue* jsdval)
{
JSContext* cx;
if(!(cx = _getContextForThreadState(jsdc, jsdthreadstate)))
return JS_FALSE;
if(jsdval)
JS_SetPendingException(cx, JSD_GetValueWrappedJSVal(jsdc, jsdval));
else
JS_ClearPendingException(cx);
return JS_TRUE;
}
/* void CanAccess (in PRUint32 aAction, in nsIXPCNativeCallContext aCallContext, in JSContextPtr aJSContext, in JSObjectPtr aJSObject, in nsISupports aObj, in nsIClassInfo aClassInfo, in jsid aName, inout voidPtr aPolicy); */
NS_IMETHODIMP
MySecMan::CanAccess(PRUint32 aAction, nsAXPCNativeCallContext *aCallContext, JSContext * aJSContext, JSObject * aJSObject, nsISupports *aObj, nsIClassInfo *aClassInfo, jsid aName, void * *aPolicy)
{
switch(mMode)
{
case OK_ALL:
return NS_OK;
case VETO_ALL:
JS_SetPendingException(aJSContext,
STRING_TO_JSVAL(JS_NewStringCopyZ(aJSContext,
"security exception")));
return NS_ERROR_FAILURE;
default:
NS_ERROR("bad case");
return NS_OK;
}
}
NS_IMETHODIMP
MySecMan::CanGetService(JSContext * aJSContext, const nsCID & aCID)
{
switch(mMode)
{
case OK_ALL:
return NS_OK;
case VETO_ALL:
JS_SetPendingException(aJSContext,
STRING_TO_JSVAL(JS_NewStringCopyZ(aJSContext,
"security exception")));
return NS_ERROR_FAILURE;
default:
NS_ERROR("bad case");
return NS_OK;
}
}
NS_IMETHODIMP
MySecMan::CanCreateWrapper(JSContext * aJSContext, const nsIID & aIID, nsISupports *aObj, nsIClassInfo *aClassInfo, void * *aPolicy)
{
switch(mMode)
{
case OK_ALL:
return NS_OK;
case VETO_ALL:
JS_SetPendingException(aJSContext,
STRING_TO_JSVAL(JS_NewStringCopyZ(aJSContext,
"security exception")));
return NS_ERROR_FAILURE;
default:
NS_ERROR("bad case");
return NS_OK;
}
}
/**
* gjs_throw_g_error:
*
* Convert a GError into a JavaScript Exception, and
* frees the GError. Differently from gjs_throw(), it
* will overwrite an existing exception, as it is used
* to report errors from C functions.
*/
void
gjs_throw_g_error (JSContext *context,
GError *error)
{
JSObject *err_obj;
if (error == NULL)
return;
JS_BeginRequest(context);
err_obj = gjs_error_from_gerror(context, error, TRUE);
if (err_obj)
JS_SetPendingException(context, OBJECT_TO_JSVAL(err_obj));
JS_EndRequest(context);
}
void propagate2JS(
pTHX_
PJS_Context *pcx,
JSObject *obj
) {
JSContext *cx = PJS_getJScx(pcx);
if(PJS_getFlag(pcx, "ReflectExceptions")) {
jsval rval;
SV* cp = newSVsv(ERRSV);
if(!PJS_ReflectPerl2JS(aTHX_ cx, obj, cp, &rval))
croak("Can't convert perl error into JSVAL");
JS_SetPendingException(cx, rval);
sv_setsv(ERRSV, &PL_sv_undef);
sv_free(cp);
} else {
JS_ClearPendingException(cx);
}
}
END_FUNCTION_SPEC
END_CLASS
NEVER_INLINE bool FASTCALL
ThrowIoErrorArg( JSContext *cx, PRErrorCode errorCode, PRInt32 osError ) {
JS::RootedObject error(cx, jl::newObjectWithGivenProto( cx, JL_CLASS(IoError), JL_CLASS_PROTOTYPE(cx, IoError)));
JS::RootedValue tmp(cx);
JL_ASSERT_ALLOC( error );
tmp.setObject(*error);
JS_SetPendingException( cx, tmp );
tmp.setInt32(errorCode);
JL_CHK( JL_SetReservedSlot( error, 0, tmp ) );
tmp.setInt32(osError);
JL_CHK( JL_SetReservedSlot( error, 1, tmp ) );
JL_SAFE( jl::addScriptLocation(cx, &error) );
JL_BAD;
}
JSBool
js_ErrorToException(JSContext *cx, const char *message, JSErrorReport *reportp)
{
JSErrNum errorNumber;
const JSErrorFormatString *errorString;
JSExnType exn;
jsval tv[4];
JSTempValueRooter tvr;
JSBool ok;
JSObject *errProto, *errObject;
JSString *messageStr, *filenameStr;
/*
* Tell our caller to report immediately if cx has no active frames, or if
* this report is just a warning.
*/
JS_ASSERT(reportp);
if (!cx->fp || JSREPORT_IS_WARNING(reportp->flags))
return JS_FALSE;
/* Find the exception index associated with this error. */
errorNumber = (JSErrNum) reportp->errorNumber;
errorString = js_GetLocalizedErrorMessage(cx, NULL, NULL, errorNumber);
exn = errorString ? (JSExnType) errorString->exnType : JSEXN_NONE;
JS_ASSERT(exn < JSEXN_LIMIT);
#if defined( DEBUG_mccabe ) && defined ( PRINTNAMES )
/* Print the error name and the associated exception name to stderr */
fprintf(stderr, "%s\t%s\n",
errortoexnname[errorNumber].name,
errortoexnname[errorNumber].exception);
#endif
/*
* Return false (no exception raised) if no exception is associated
* with the given error number.
*/
if (exn == JSEXN_NONE)
return JS_FALSE;
/*
* Prevent runaway recursion, via cx->generatingError. If an out-of-memory
* error occurs, no exception object will be created, but we don't assume
* that OOM is the only kind of error that subroutines of this function
* called below might raise.
*/
if (cx->generatingError)
return JS_FALSE;
/* After this point the control must flow through the label out. */
cx->generatingError = JS_TRUE;
/* Protect the newly-created strings below from nesting GCs. */
memset(tv, 0, sizeof tv);
JS_PUSH_TEMP_ROOT(cx, JS_ARRAY_LENGTH(tv), tv, &tvr);
/*
* Try to get an appropriate prototype by looking up the corresponding
* exception constructor name in the scope chain of the current context's
* top stack frame, or in the global object if no frame is active.
*/
ok = js_GetClassPrototype(cx, NULL, INT_TO_JSID(exceptions[exn].key),
&errProto);
if (!ok)
goto out;
tv[0] = OBJECT_TO_JSVAL(errProto);
errObject = js_NewObject(cx, &js_ErrorClass, errProto, NULL, 0);
if (!errObject) {
ok = JS_FALSE;
goto out;
}
tv[1] = OBJECT_TO_JSVAL(errObject);
messageStr = JS_NewStringCopyZ(cx, message);
if (!messageStr) {
ok = JS_FALSE;
goto out;
}
tv[2] = STRING_TO_JSVAL(messageStr);
filenameStr = JS_NewStringCopyZ(cx, reportp->filename);
if (!filenameStr) {
ok = JS_FALSE;
goto out;
}
tv[3] = STRING_TO_JSVAL(filenameStr);
ok = InitExnPrivate(cx, errObject, messageStr, filenameStr,
reportp->lineno, reportp);
if (!ok)
goto out;
JS_SetPendingException(cx, OBJECT_TO_JSVAL(errObject));
/* Flag the error report passed in to indicate an exception was raised. */
reportp->flags |= JSREPORT_EXCEPTION;
out:
JS_POP_TEMP_ROOT(cx, &tvr);
cx->generatingError = JS_FALSE;
return ok;
}
void
gjstest_test_func_gjs_jsapi_util_error_throw(void)
{
GjsUnitTestFixture fixture;
JSContext *context;
jsval exc, value, previous;
char *s = NULL;
int strcmp_result;
_gjs_unit_test_fixture_begin(&fixture);
context = fixture.context;
/* Test that we can throw */
gjs_throw(context, "This is an exception %d", 42);
g_assert(JS_IsExceptionPending(context));
exc = JSVAL_VOID;
JS_GetPendingException(context, &exc);
g_assert(!JSVAL_IS_VOID(exc));
value = JSVAL_VOID;
JS_GetProperty(context, JSVAL_TO_OBJECT(exc), "message",
&value);
g_assert(JSVAL_IS_STRING(value));
gjs_string_get_binary_data (context, value, &s, NULL);
g_assert(s != NULL);
strcmp_result = strcmp(s, "This is an exception 42");
free(s);
if (strcmp_result != 0)
g_error("Exception has wrong message '%s'", s);
/* keep this around before we clear it */
previous = exc;
JS_AddValueRoot(context, &previous);
JS_ClearPendingException(context);
g_assert(!JS_IsExceptionPending(context));
/* Check that we don't overwrite a pending exception */
JS_SetPendingException(context, previous);
g_assert(JS_IsExceptionPending(context));
gjs_throw(context, "Second different exception %s", "foo");
g_assert(JS_IsExceptionPending(context));
exc = JSVAL_VOID;
JS_GetPendingException(context, &exc);
g_assert(!JSVAL_IS_VOID(exc));
g_assert(exc == previous);
JS_RemoveValueRoot(context, &previous);
_gjs_unit_test_fixture_finish(&fixture);
}
JSBool js_destroy(JSContext *context) {
JS_SetPendingException(context, STRING_TO_JSVAL(JS_NewStringCopyZ(context, "timeout")));
return JS_FALSE;
}
JSBool
js_ReportUncaughtException(JSContext *cx)
{
jsval exn;
JSObject *exnObject;
jsval roots[5];
JSTempValueRooter tvr;
JSErrorReport *reportp, report;
JSString *str;
const char *bytes;
JSBool ok;
if (!JS_IsExceptionPending(cx))
return JS_TRUE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
memset(roots, 0, sizeof roots);
JS_PUSH_TEMP_ROOT(cx, JS_ARRAY_LENGTH(roots), roots, &tvr);
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we must root exnObject. Later, if exnObject is
* non-null, we need to root other intermediates, so allocate an operand
* stack segment to protect all of these values.
*/
if (JSVAL_IS_PRIMITIVE(exn)) {
exnObject = NULL;
} else {
exnObject = JSVAL_TO_OBJECT(exn);
roots[0] = exn;
}
JS_ClearPendingException(cx);
reportp = js_ErrorFromException(cx, exn);
/* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
str = js_ValueToString(cx, exn);
if (!str) {
bytes = "unknown (can't convert to string)";
} else {
roots[1] = STRING_TO_JSVAL(str);
bytes = js_GetStringBytes(cx, str);
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_TRUE;
if (!reportp &&
exnObject &&
OBJ_GET_CLASS(cx, exnObject) == &js_ErrorClass) {
const char *filename;
uint32 lineno;
ok = JS_GetProperty(cx, exnObject, js_message_str, &roots[2]);
if (!ok)
goto out;
if (JSVAL_IS_STRING(roots[2])) {
bytes = js_GetStringBytes(cx, JSVAL_TO_STRING(roots[2]));
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_GetProperty(cx, exnObject, js_fileName_str, &roots[3]);
if (!ok)
goto out;
str = js_ValueToString(cx, roots[3]);
if (!str) {
ok = JS_FALSE;
goto out;
}
filename = StringToFilename(cx, str);
if (!filename) {
ok = JS_FALSE;
goto out;
}
ok = JS_GetProperty(cx, exnObject, js_lineNumber_str, &roots[4]);
if (!ok)
goto out;
lineno = js_ValueToECMAUint32 (cx, &roots[4]);
ok = !JSVAL_IS_NULL(roots[4]);
if (!ok)
goto out;
reportp = &report;
memset(&report, 0, sizeof report);
report.filename = filename;
report.lineno = (uintN) lineno;
}
if (!reportp) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
/* Pass the exception object. */
JS_SetPendingException(cx, exn);
js_ReportErrorAgain(cx, bytes, reportp);
JS_ClearPendingException(cx);
}
out:
JS_POP_TEMP_ROOT(cx, &tvr);
return ok;
}
/*
* This is a wrapper around JS_ReportError(), useful when an error condition
* is the result of a JVM failure or exception condition. It appends the
* message associated with the pending Java exception to the passed in
* printf-style format string and arguments.
*/
static void
vreport_java_error(JSContext *cx, JNIEnv *jEnv, const char *format, va_list ap)
{
jobject java_obj;
jclass java_class;
JavaClassDescriptor *class_descriptor;
jthrowable java_exception;
JSType wrapped_exception_type;
jsval js_exception;
java_obj = NULL;
class_descriptor = NULL;
/* Get the exception out of the java environment. */
java_exception = (*jEnv)->ExceptionOccurred(jEnv);
if (!java_exception) {
JSString *err_jsstr;
char *err = JS_vsmprintf(format, ap);
if (!err)
return;
err_jsstr = JS_NewString(cx, err, strlen(err));
if (!err_jsstr)
return;
JS_SetPendingException(cx, STRING_TO_JSVAL(err_jsstr));
return;
}
(*jEnv)->ExceptionClear(jEnv);
/* Check for JSException */
if (njJSException &&
(*jEnv)->IsInstanceOf(jEnv, java_exception, njJSException)) {
wrapped_exception_type =
(*jEnv)->GetIntField(jEnv, java_exception,
njJSException_wrappedExceptionType);
/* (int) to suppress warning */
if ((int)wrapped_exception_type != JSTYPE_EMPTY) {
java_obj =
(*jEnv)->GetObjectField(jEnv, java_exception,
njJSException_wrappedException);
if ((java_obj == NULL) &&
(wrapped_exception_type == JSTYPE_OBJECT)) {
js_exception = JSVAL_NULL;
} else {
java_class = (*jEnv)->GetObjectClass(jEnv, java_obj);
class_descriptor = jsj_GetJavaClassDescriptor(cx, jEnv, java_class);
/* OK to delete ref, since above call adds global ref */
(*jEnv)->DeleteLocalRef(jEnv, java_class);
/* Convert native JS values back to native types. */
switch(wrapped_exception_type) {
case JSTYPE_NUMBER:
if (!jsj_ConvertJavaObjectToJSNumber(cx, jEnv,
class_descriptor,
java_obj,
&js_exception))
goto error;
break;
case JSTYPE_BOOLEAN:
if (!jsj_ConvertJavaObjectToJSBoolean(cx, jEnv,
class_descriptor,
java_obj,
&js_exception))
goto error;
break;
case JSTYPE_STRING:
if (!jsj_ConvertJavaObjectToJSString(cx, jEnv,
class_descriptor,
java_obj,
&js_exception))
goto error;
break;
case JSTYPE_VOID:
js_exception = JSVAL_VOID;
break;
case JSTYPE_OBJECT:
case JSTYPE_FUNCTION:
default:
if ((*jEnv)->IsInstanceOf(jEnv, java_obj, njJSObject)) {
js_exception = OBJECT_TO_JSVAL(jsj_UnwrapJSObjectWrapper(jEnv, java_obj));
if (!js_exception)
goto error;
} else {
if (!jsj_ConvertJavaObjectToJSValue(cx, jEnv, java_obj,
&js_exception))
goto error;
}
}
}
}
/* Check for internal exception */
} else {
if (!JSJ_ConvertJavaObjectToJSValue(cx, java_exception,
&js_exception)) {
goto error;
}
}
/* Set pending JS exception and clear the java exception. */
JS_SetPendingException(cx, js_exception);
goto done;
error:
JS_ASSERT(0);
jsj_LogError("Out of memory while attempting to throw JSException\n");
done:
if (class_descriptor)
jsj_ReleaseJavaClassDescriptor(cx, jEnv, class_descriptor);
if (java_obj)
(*jEnv)->DeleteLocalRef(jEnv, java_obj);
if (java_exception)
(*jEnv)->DeleteLocalRef(jEnv, java_exception);
}
void _sptInvoker::_reportError( JSContext *cx,
INT32 rc,
const bson::BSONObj &detail )
{
sdbSetErrno( rc ) ;
if ( SDB_OK != rc )
{
stringstream ss ;
BSONObjIterator itr( detail) ;
INT32 fieldNum = detail.nFields() ;
INT32 count = 0 ;
while ( itr.more() )
{
if ( count > 0 )
{
ss << ", " ;
}
BSONElement e = itr.next() ;
if ( fieldNum > 1 ||
0 != ossStrcmp( SPT_ERR, e.fieldName() ) )
{
ss << e.fieldName() << ": " ;
}
if ( String == e.type() )
{
ss << e.valuestr() ;
}
else if ( NumberInt == e.type() )
{
ss << e.numberInt() ;
}
else if ( NumberLong == e.type() )
{
ss << e.numberLong() ;
}
else if ( NumberDouble == e.type() )
{
ss << e.numberDouble() ;
}
else if ( Bool == e.type() )
{
ss << ( e.boolean() ? "true" : "false" ) ;
}
else
{
ss << e.toString( false, false ) ;
}
++count ;
}
sdbSetErrMsg( ss.str().c_str() ) ;
if ( sdbIsErrMsgEmpty() )
{
sdbSetErrMsg( getErrDesp( rc ) ) ;
}
JS_SetPendingException( cx , INT_TO_JSVAL( rc ) ) ;
}
else
{
sdbSetErrMsg( NULL ) ;
}
return ;
}
JSBool
js_ErrorToException(JSContext *cx, const char *message, JSErrorReport *reportp)
{
JSErrNum errorNumber;
JSExnType exn;
JSBool ok;
JSObject *errProto, *errObject;
JSString *messageStr, *filenameStr;
uintN lineno;
JSExnPrivate *privateData;
/* Find the exception index associated with this error. */
JS_ASSERT(reportp);
if (JSREPORT_IS_WARNING(reportp->flags))
return JS_FALSE;
errorNumber = (JSErrNum) reportp->errorNumber;
exn = errorToExceptionNum[errorNumber];
JS_ASSERT(exn < JSEXN_LIMIT);
#if defined( DEBUG_mccabe ) && defined ( PRINTNAMES )
/* Print the error name and the associated exception name to stderr */
fprintf(stderr, "%s\t%s\n",
errortoexnname[errorNumber].name,
errortoexnname[errorNumber].exception);
#endif
/*
* Return false (no exception raised) if no exception is associated
* with the given error number.
*/
if (exn == JSEXN_NONE)
return JS_FALSE;
/*
* Prevent runaway recursion, just as the Exception native constructor
* must do, via cx->creatingException. If an out-of-memory error occurs,
* no exception object will be created, but we don't assume that OOM is
* the only kind of error that subroutines of this function called below
* might raise.
*/
if (cx->creatingException)
return JS_FALSE;
cx->creatingException = JS_TRUE;
/*
* Try to get an appropriate prototype by looking up the corresponding
* exception constructor name in the scope chain of the current context's
* top stack frame, or in the global object if no frame is active.
*
* XXXbe hack around JSCLASS_NEW_RESOLVE code in js_LookupProperty that
* checks cx->fp, cx->fp->pc, and js_CodeSpec[*cx->fp->pc] in order
* to compute resolve flags such as JSRESOLVE_ASSIGNING. The bug
* is that this "internal" js_GetClassPrototype call may trigger a
* resolve of exceptions[exn].name if the global object uses a lazy
* standard class resolver (see JS_ResolveStandardClass), but the
* current frame and bytecode end up affecting the resolve flags.
*/
{
JSStackFrame *fp = cx->fp;
jsbytecode *pc = NULL;
if (fp) {
pc = fp->pc;
fp->pc = NULL;
}
ok = js_GetClassPrototype(cx, exceptions[exn].name, &errProto);
if (pc)
fp->pc = pc;
if (!ok)
goto out;
}
errObject = js_NewObject(cx, &ExceptionClass, errProto, NULL);
if (!errObject) {
ok = JS_FALSE;
goto out;
}
messageStr = JS_NewStringCopyZ(cx, message);
if (!messageStr) {
ok = JS_FALSE;
goto out;
}
if (reportp) {
filenameStr = JS_NewStringCopyZ(cx, reportp->filename);
if (!filenameStr) {
ok = JS_FALSE;
goto out;
}
lineno = reportp->lineno;
} else {
filenameStr = cx->runtime->emptyString;
lineno = 0;
}
ok = InitExceptionObject(cx, errObject, messageStr, filenameStr, lineno);
if (!ok)
goto out;
/*
* Construct a new copy of the error report struct, and store it in the
* exception object's private data. We can't use the error report struct
* that was passed in, because it's stack-allocated, and also because it
* may point to transient data in the JSTokenStream.
*/
privateData = exn_newPrivate(cx, reportp);
if (!privateData) {
ok = JS_FALSE;
goto out;
}
OBJ_SET_SLOT(cx, errObject, JSSLOT_PRIVATE, PRIVATE_TO_JSVAL(privateData));
/* Set the generated Exception object as the current exception. */
JS_SetPendingException(cx, OBJECT_TO_JSVAL(errObject));
/* Flag the error report passed in to indicate an exception was raised. */
reportp->flags |= JSREPORT_EXCEPTION;
out:
cx->creatingException = JS_FALSE;
return ok;
}
/*
* See:
* https://bugzilla.mozilla.org/show_bug.cgi?id=166436
* https://bugzilla.mozilla.org/show_bug.cgi?id=215173
*
* Very surprisingly, jsapi.h lacks any way to "throw new Error()"
*
* So here is an awful hack inspired by
* http://egachine.berlios.de/embedding-sm-best-practice/embedding-sm-best-practice.html#error-handling
*/
static void
gjs_throw_valist(JSContext *context,
const char *error_class,
const char *format,
va_list args)
{
char *s;
JSBool result;
jsval v_constructor, v_message;
JSObject *err_obj;
s = g_strdup_vprintf(format, args);
JS_BeginRequest(context);
if (JS_IsExceptionPending(context)) {
/* Often it's unclear whether a given jsapi.h function
* will throw an exception, so we will throw ourselves
* "just in case"; in those cases, we don't want to
* overwrite an exception that already exists.
* (Do log in case our second exception adds more info,
* but don't log as topic ERROR because if the exception is
* caught we don't want an ERROR in the logs.)
*/
gjs_debug(GJS_DEBUG_CONTEXT,
"Ignoring second exception: '%s'",
s);
g_free(s);
JS_EndRequest(context);
return;
}
result = JS_FALSE;
(void)JS_EnterLocalRootScope(context);
if (!gjs_string_from_utf8(context, s, -1, &v_message)) {
JS_ReportError(context, "Failed to copy exception string");
goto out;
}
if (!gjs_object_get_property(context, JS_GetGlobalObject(context),
error_class, &v_constructor)) {
JS_ReportError(context, "??? Missing Error constructor in global object?");
goto out;
}
/* throw new Error(message) */
err_obj = JS_New(context, JSVAL_TO_OBJECT(v_constructor), 1, &v_message);
JS_SetPendingException(context, OBJECT_TO_JSVAL(err_obj));
result = JS_TRUE;
out:
JS_LeaveLocalRootScope(context);
if (!result) {
/* try just reporting it to error handler? should not
* happen though pretty much
*/
JS_ReportError(context,
"Failed to throw exception '%s'",
s);
}
g_free(s);
JS_EndRequest(context);
}
static JSBool
log_and_maybe_keep_exception(JSContext *context,
char **message_p,
gboolean keep)
{
jsval exc = JSVAL_VOID;
JSString *s;
char *message;
JSBool retval = JS_FALSE;
JS_BeginRequest(context);
if (message_p)
*message_p = NULL;
JS_AddRoot(context, &exc);
if (!JS_GetPendingException(context, &exc))
goto out;
JS_ClearPendingException(context);
s = JS_ValueToString(context, exc);
if (s == NULL) {
gjs_debug(GJS_DEBUG_ERROR,
"Failed to convert exception to string");
goto out; /* Exception should be thrown already */
}
if (!gjs_string_to_utf8(context, STRING_TO_JSVAL(s), &message)) {
gjs_debug(GJS_DEBUG_ERROR,
"Failed to convert exception string to UTF-8");
goto out; /* Error already set */
}
gjs_debug(GJS_DEBUG_ERROR,
"Exception was: %s",
message);
if (message_p) {
*message_p = message;
} else {
g_free(message);
}
gjs_log_exception_props(context, exc);
/* We clear above and then set it back so any exceptions
* from the logging process don't overwrite the original
*/
if (keep)
JS_SetPendingException(context, exc);
retval = JS_TRUE;
out:
JS_RemoveRoot(context, &exc);
JS_EndRequest(context);
return retval;
}
