/*
* Class: netscape_javascript_JSObject
* Method: getSlot
* Signature: (I)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL
Java_netscape_javascript_JSObject_getSlot(JNIEnv *jEnv,
jobject java_wrapper_obj,
jint slot)
{
JSContext *cx = NULL;
JSObject *js_obj;
jsval js_val;
int dummy_cost;
JSBool dummy_bool;
JSErrorReporter saved_reporter;
jobject member;
JSJavaThreadState *jsj_env;
jsj_env = jsj_enter_js(jEnv, NULL, java_wrapper_obj, &cx, &js_obj, &saved_reporter, NULL, 0, NULL);
if (!jsj_env)
return NULL;
if (!JS_GetElement(cx, js_obj, slot, &js_val))
goto done;
if (!jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &member, &dummy_bool))
goto done;
done:
if (!jsj_exit_js(cx, jsj_env, saved_reporter))
return NULL;
return member;
}
/*
* Class: netscape_javascript_JSObject
* Method: getMember
* Signature: (Ljava/lang/String;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL
Java_netscape_javascript_JSObject_getMember(JNIEnv *jEnv,
jobject java_wrapper_obj,
jstring property_name_jstr)
{
JSContext *cx = NULL;
JSObject *js_obj;
jsval js_val;
int dummy_cost;
JSBool dummy_bool;
const jchar *property_name_ucs2;
jsize property_name_len;
JSErrorReporter saved_reporter;
jobject member;
jboolean is_copy;
JSJavaThreadState *jsj_env;
jsj_env = jsj_enter_js(jEnv, NULL, java_wrapper_obj, &cx, &js_obj, &saved_reporter, NULL, 0, NULL);
if (!jsj_env)
return NULL;
property_name_ucs2 = NULL;
if (!property_name_jstr) {
JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL,
JSJMSG_NULL_MEMBER_NAME);
member = NULL;
goto done;
}
/* Get the Unicode string for the JS property name */
property_name_ucs2 = (*jEnv)->GetStringChars(jEnv, property_name_jstr, &is_copy);
if (!property_name_ucs2) {
JS_ASSERT(0);
goto done;
}
property_name_len = (*jEnv)->GetStringLength(jEnv, property_name_jstr);
if (!JS_GetUCProperty(cx, js_obj, property_name_ucs2, property_name_len, &js_val))
goto done;
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val,
jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &member, &dummy_bool);
done:
if (property_name_ucs2)
(*jEnv)->ReleaseStringChars(jEnv, property_name_jstr, property_name_ucs2);
if (!jsj_exit_js(cx, jsj_env, saved_reporter))
return NULL;
return member;
}
/**
* get member of a Native JSObject for a given index.
*
* @param jEnv - JNIEnv on which the call is being made.
* @param obj - A Native JS Object.
* @param index - Index of a member.
* @param pjobj - return parameter as a java object representing
* the member.
*/
NS_METHOD
nsCLiveconnect::GetSlot(JNIEnv *jEnv, lcjsobject obj, jint slot, void* principalsArray[],
int numPrincipals, nsISupports *securitySupports, jobject *pjobj)
{
if(jEnv == NULL || obj == 0)
{
return NS_ERROR_FAILURE;
}
JSJavaThreadState *jsj_env = NULL;
JSObjectHandle *handle = (JSObjectHandle*)obj;
JSObject *js_obj = handle->js_obj;
JSContext *cx = NULL;
jobject member = NULL;
jsval js_val;
int dummy_cost = 0;
JSBool dummy_bool = PR_FALSE;
JSErrorReporter saved_state = NULL;
jsj_env = jsj_enter_js(jEnv, mJavaClient, NULL, &cx, NULL, &saved_state, principalsArray, numPrincipals, securitySupports);
if (!jsj_env)
return NS_ERROR_FAILURE;
AutoPushJSContext autopush(securitySupports, cx);
if (NS_FAILED(autopush.ResultOfPush()))
goto done;
// =-= sudu: check to see if slot can be passed in as is.
// Should it be converted to a jsint?
if (!JS_GetElement(cx, js_obj, slot, &js_val))
goto done;
if (!jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &member, &dummy_bool))
goto done;
done:
if (!jsj_exit_js(cx, jsj_env, saved_state))
return NS_ERROR_FAILURE;
*pjobj = member;
return NS_OK;
}
/*
* Class: netscape_javascript_JSObject
* Method: getWindow
* Signature: (Ljava/applet/Applet;)Lnetscape/javascript/JSObject;
*/
JNIEXPORT jobject JNICALL
Java_netscape_javascript_JSObject_getWindow(JNIEnv *jEnv,
jclass js_object_class,
jobject java_applet_obj)
{
char *err_msg;
JSContext *cx = NULL;
JSObject *js_obj = NULL;
jsval js_val;
int dummy_cost;
JSBool dummy_bool;
JSErrorReporter saved_reporter;
jobject java_obj;
JSJavaThreadState *jsj_env;
jsj_env = jsj_enter_js(jEnv, java_applet_obj, NULL, &cx, NULL, &saved_reporter, NULL, 0, NULL);
if (!jsj_env)
return NULL;
err_msg = NULL;
java_obj = NULL;
if (JSJ_callbacks && JSJ_callbacks->map_java_object_to_js_object)
js_obj = JSJ_callbacks->map_java_object_to_js_object(jEnv, java_applet_obj, &err_msg);
if (!js_obj) {
if (err_msg) {
JS_ReportError(cx, err_msg);
free(err_msg);
}
goto done;
}
js_val = OBJECT_TO_JSVAL(js_obj);
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &java_obj, &dummy_bool);
done:
if (!jsj_exit_js(cx, jsj_env, saved_reporter))
return NULL;
return java_obj;
}
/*
* Convert a JS value to a Java value of the given type signature. The cost
* variable is incremented if coercion is required, e.g. the source value is
* a string, but the target type is a boolean.
*
* Returns JS_FALSE if no conversion is possible, either because the jsval has
* a type that is wholly incompatible with the Java value, or because a scalar
* jsval can't be represented in a variable of the target type without loss of
* precision, e.g. the source value is "4.2" but the destination type is byte.
* If conversion is not possible and java_value is non-NULL, the JS error
* reporter is called with an appropriate message.
*/
JSBool
jsj_ConvertJSValueToJavaValue(JSContext *cx, JNIEnv *jEnv, jsval v_arg,
JavaSignature *signature,
int *cost, jvalue *java_value, JSBool *is_local_refp)
{
JavaSignatureChar type;
jsval v;
JSBool success = JS_FALSE;
/* Initialize to default case, in which no new Java object is
synthesized to perform the conversion and, therefore, no JNI local
references are being held. */
*is_local_refp = JS_FALSE;
type = signature->type;
v = v_arg;
switch (type) {
case JAVA_SIGNATURE_BOOLEAN:
if (!JSVAL_IS_BOOLEAN(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_BOOLEAN, &v))
goto conversion_error;
if (JSVAL_IS_VOID(v))
goto conversion_error;
(*cost)++;
}
if (java_value)
java_value->z = (jboolean)(JSVAL_TO_BOOLEAN(v) == JS_TRUE);
break;
case JAVA_SIGNATURE_SHORT:
JSVAL_TO_INTEGRAL_JVALUE(short, s, jshort, v, java_value);
break;
case JAVA_SIGNATURE_BYTE:
JSVAL_TO_INTEGRAL_JVALUE(byte, b, jbyte, v, java_value);
break;
case JAVA_SIGNATURE_CHAR:
/* A one-character string can be converted into a character */
if (JSVAL_IS_STRING(v) && (JS_GetStringLength(JSVAL_TO_STRING(v)) == 1)) {
v = INT_TO_JSVAL(*JS_GetStringChars(JSVAL_TO_STRING(v)));
}
JSVAL_TO_INTEGRAL_JVALUE(char, c, jchar, v, java_value);
break;
case JAVA_SIGNATURE_INT:
JSVAL_TO_INTEGRAL_JVALUE(int, i, jint, v, java_value);
break;
case JAVA_SIGNATURE_LONG:
#if defined(XP_MAC) || (defined(XP_OS2) && !defined(HAVE_LONG_LONG))
JSVAL_TO_JLONG_JVALUE(j, jlong, v, java_value);
#else
JSVAL_TO_INTEGRAL_JVALUE(long, j, jlong, v, java_value);
#endif
break;
case JAVA_SIGNATURE_FLOAT:
if (!JSVAL_IS_NUMBER(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
goto conversion_error;
(*cost)++;
}
if (java_value) {
if (JSVAL_IS_INT(v))
java_value->f = (jfloat) JSVAL_TO_INT(v);
else
java_value->f = (jfloat) *JSVAL_TO_DOUBLE(v);
}
break;
case JAVA_SIGNATURE_DOUBLE:
if (!JSVAL_IS_NUMBER(v)) {
if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
goto conversion_error;
(*cost)++;
}
if (java_value) {
if (JSVAL_IS_INT(v))
java_value->d = (jdouble) JSVAL_TO_INT(v);
else
java_value->d = (jdouble) *JSVAL_TO_DOUBLE(v);
}
break;
/* Non-primitive (reference) type */
default:
JS_ASSERT(IS_REFERENCE_TYPE(type));
if (!jsj_ConvertJSValueToJavaObject(cx, jEnv, v, signature, cost,
&java_value->l, is_local_refp))
goto conversion_error;
break;
case JAVA_SIGNATURE_UNKNOWN:
case JAVA_SIGNATURE_VOID:
JS_ASSERT(0);
return JS_FALSE;
}
/* Success */
return JS_TRUE;
numeric_conversion_error:
success = JS_TRUE;
/* Fall through ... */
conversion_error:
if (java_value) {
const char *jsval_string;
const char *class_name;
JSString *jsstr;
jsval_string = NULL;
jsstr = JS_ValueToString(cx, v_arg);
if (jsstr)
jsval_string = JS_GetStringBytes(jsstr);
if (!jsval_string)
jsval_string = "";
class_name = jsj_ConvertJavaSignatureToHRString(cx, signature);
JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL,
JSJMSG_CANT_CONVERT_JS, jsval_string,
class_name);
return JS_FALSE;
}
return success;
}
/*
* Convert a JS value to an instance of java.lang.Object or one of its subclasses,
* performing any necessary type coercion. If non-trivial coercion is required,
* the cost value is incremented. If the java_value pass-by-reference argument
* is non-NULL, the resulting Java value is stored there.
*
* Returns JS_TRUE if the conversion is possible, JS_FALSE otherwise
*/
JSBool
jsj_ConvertJSValueToJavaObject(JSContext *cx, JNIEnv *jEnv, jsval v, JavaSignature *signature,
int *cost, jobject *java_value, JSBool *is_local_refp)
{
JSString *jsstr;
jclass target_java_class;
JS_ASSERT(IS_REFERENCE_TYPE(signature->type));
/* Initialize to default case, in which no new Java object is
synthesized to perform the conversion and, therefore, no JNI local
references are being held. */
*is_local_refp = JS_FALSE;
/* Get the Java type of the target value */
target_java_class = signature->java_class;
if (JSVAL_IS_OBJECT(v)) {
JSObject *js_obj = JSVAL_TO_OBJECT(v);
/* JS null is always assignable to a Java object */
if (!js_obj) {
if (java_value)
*java_value = NULL;
return JS_TRUE;
}
if (JS_InstanceOf(cx, js_obj, &JavaObject_class, 0) ||
JS_InstanceOf(cx, js_obj, &JavaArray_class, 0)) {
/* The source value is a Java object wrapped inside a JavaScript
object. Unwrap the JS object and return the original Java
object if it's class makes it assignment-compatible with the
target class using Java's assignability rules. */
JavaObjectWrapper *java_wrapper = JS_GetPrivate(cx, js_obj);
jobject java_obj = java_wrapper->java_obj;
if ((*jEnv)->IsInstanceOf(jEnv, java_obj, target_java_class)) {
if (java_value)
*java_value = java_obj;
return JS_TRUE;
}
/* Fall through, to attempt conversion to a Java string */
} else if (JS_InstanceOf(cx, js_obj, &JavaClass_class, 0)) {
/* We're dealing with the reflection of a Java class */
JavaClassDescriptor *java_class_descriptor = JS_GetPrivate(cx, js_obj);
/* Check if target type is java.lang.Class class */
if ((*jEnv)->IsAssignableFrom(jEnv, jlClass, target_java_class)) {
if (java_value)
*java_value = java_class_descriptor->java_class;
return JS_TRUE;
}
/* Check if target type is netscape.javascript.JSObject wrapper class */
if (convert_js_obj_to_JSObject_wrapper(cx, jEnv, js_obj, signature, cost, java_value)) {
if (java_value && *java_value)
*is_local_refp = JS_TRUE;
return JS_TRUE;
}
/* Fall through, to attempt conversion to a Java string */
} else if (JS_InstanceOf(cx, js_obj, &JavaMember_class, 0)) {
if (!JS_ConvertValue(cx, v, JSTYPE_OBJECT, &v))
return JS_FALSE;
return jsj_ConvertJSValueToJavaObject(cx, jEnv, v, signature, cost,
java_value, is_local_refp);
/* JS Arrays are converted, element by element, to Java arrays */
} else if (JS_IsArrayObject(cx, js_obj) && (signature->type == JAVA_SIGNATURE_ARRAY)) {
if (convert_js_array_to_java_array(cx, jEnv, js_obj, signature, java_value)) {
if (java_value && *java_value)
*is_local_refp = JS_TRUE;
return JS_TRUE;
}
return JS_FALSE;
} else {
/* Otherwise, see if the target type is the netscape.javascript.JSObject
wrapper class or one of its subclasses, in which case a
reference is passed to the original JS object by wrapping it
inside an instance of netscape.javascript.JSObject */
if (convert_js_obj_to_JSObject_wrapper(cx, jEnv, js_obj, signature, cost, java_value)) {
if (java_value && *java_value)
*is_local_refp = JS_TRUE;
return JS_TRUE;
}
/* Fall through, to attempt conversion to a Java string */
}
} else if (JSVAL_IS_NUMBER(v)) {
/* JS numbers, integral or not, can be converted to instances of java.lang.Double */
if ((*jEnv)->IsAssignableFrom(jEnv, jlDouble, target_java_class)) {
if (java_value) {
jsdouble d;
if (!JS_ValueToNumber(cx, v, &d))
goto conversion_error;
*java_value = (*jEnv)->NewObject(jEnv, jlDouble, jlDouble_Double, d);
if (*java_value) {
*is_local_refp = JS_TRUE;
} else {
jsj_UnexpectedJavaError(cx, jEnv,
"Couldn't construct instance of java.lang.Double");
return JS_FALSE;
}
}
return JS_TRUE;
}
/* Fall through, to attempt conversion to a java.lang.String ... */
} else if (JSVAL_IS_BOOLEAN(v)) {
/* JS boolean values can be converted to instances of java.lang.Boolean */
if ((*jEnv)->IsAssignableFrom(jEnv, jlBoolean, target_java_class)) {
if (java_value) {
JSBool b;
if (!JS_ValueToBoolean(cx, v, &b))
goto conversion_error;
*java_value =
(*jEnv)->NewObject(jEnv, jlBoolean, jlBoolean_Boolean, b);
if (*java_value) {
*is_local_refp = JS_TRUE;
} else {
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't construct instance "
"of java.lang.Boolean");
return JS_FALSE;
}
}
return JS_TRUE;
}
/* Fall through, to attempt conversion to a java.lang.String ... */
}
/* If the source JS type is either a string or undefined, or if no conversion
is possible from a number, boolean or JS object, see if the target type is
java.lang.String */
if ((*jEnv)->IsAssignableFrom(jEnv, jlString, target_java_class)) {
/* Convert to JS string, if necessary, and then to a Java Unicode string */
jsstr = JS_ValueToString(cx, v);
if (jsstr) {
if (java_value) {
*java_value = jsj_ConvertJSStringToJavaString(cx, jEnv, jsstr);
if (*java_value) {
*is_local_refp = JS_TRUE;
} else {
return JS_FALSE;
}
}
return JS_TRUE;
}
}
conversion_error:
return JS_FALSE;
}
/*
* This is called upon returning from JS back into Java. Any JS errors
* reported during that time will be converted into Java exceptions. It's
* possible that a JS error was actually triggered by Java at some point, in
* which case the original Java exception is thrown.
*/
static void
throw_any_pending_js_error_as_a_java_exception(JSJavaThreadState *jsj_env)
{
CapturedJSError *error;
JNIEnv *jEnv;
jstring message_jstr, linebuf_jstr, filename_jstr;
jint index, lineno;
JSErrorReport *report;
JSContext *cx;
jsval pending_exception;
jobject java_obj;
int dummy_cost;
JSBool is_local_refp;
JSType primitive_type;
jthrowable java_exception;
message_jstr = linebuf_jstr = filename_jstr = java_exception = NULL;
/* Get the Java JNI environment */
jEnv = jsj_env->jEnv;
cx = jsj_env->cx;
/* Get the pending JS exception if it exists */
if (cx&&JS_IsExceptionPending(cx)) {
if (!JS_GetPendingException(cx, &pending_exception))
goto out_of_memory;
/* Find out the JSTYPE of this jsval. */
primitive_type = JS_TypeOfValue(cx, pending_exception);
/* Convert jsval exception to a java object and then use it to
create an instance of JSException. */
if (!jsj_ConvertJSValueToJavaObject(cx, jEnv,
pending_exception,
jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &java_obj,
&is_local_refp))
goto done;
java_exception = (*jEnv)->NewObject(jEnv, njJSException,
njJSException_JSException_wrap,
primitive_type, java_obj);
if (is_local_refp)
(*jEnv)->DeleteLocalRef(jEnv, java_obj);
if (!java_exception)
goto out_of_memory;
/* Throw the newly-created JSException */
if ((*jEnv)->Throw(jEnv, java_exception) < 0) {
JS_ASSERT(0);
jsj_LogError("Couldn't throw JSException\n");
goto done;
}
JS_ClearPendingException(cx);
return;
}
if (!jsj_env->pending_js_errors) {
#ifdef DEBUG
/* Any exception should be cleared as soon as it's detected, so there
shouldn't be any pending. */
if ((*jEnv)->ExceptionOccurred(jEnv)) {
/* A Java exception occurred, but nobody in JS-land noticed. */
JS_ASSERT(0);
(*jEnv)->ExceptionClear(jEnv);
}
#endif
return;
}
/* Get the deepest (oldest) saved JS error */
/* XXX - What's the right thing to do about newer errors ?
For now we just throw them away */
error = jsj_env->pending_js_errors;
while (error->next)
error = error->next;
/*
* If the JS error was originally the result of a Java exception, rethrow
* the original exception.
*/
if (error->java_exception) {
(*jEnv)->Throw(jEnv, error->java_exception);
goto done;
}
/* Propagate any JS errors that did not originate as Java exceptions into
Java as an instance of netscape.javascript.JSException */
/* First, marshall the arguments to the JSException constructor */
message_jstr = NULL;
if (error->message) {
message_jstr = (*jEnv)->NewStringUTF(jEnv, error->message);
if (!message_jstr)
goto out_of_memory;
}
report = &error->report;
filename_jstr = NULL;
if (report->filename) {
filename_jstr = (*jEnv)->NewStringUTF(jEnv, report->filename);
if (!filename_jstr)
goto out_of_memory;
}
linebuf_jstr = NULL;
if (report->linebuf) {
linebuf_jstr = (*jEnv)->NewStringUTF(jEnv, report->linebuf);
if (!linebuf_jstr)
goto out_of_memory;
}
lineno = report->lineno;
index = report->linebuf ? report->tokenptr - report->linebuf : 0;
/* Call the JSException constructor */
java_exception = (*jEnv)->NewObject(jEnv, njJSException, njJSException_JSException,
message_jstr, filename_jstr, lineno, linebuf_jstr, index);
if (!java_exception)
goto out_of_memory;
/* Throw the newly-created JSException */
if ((*jEnv)->Throw(jEnv, java_exception) < 0) {
JS_ASSERT(0);
jsj_UnexpectedJavaError(cx, jEnv, "Couldn't throw JSException\n");
}
goto done;
out_of_memory:
/* No recovery possible */
JS_ASSERT(0);
jsj_LogError("Out of memory while attempting to throw JSException\n");
done:
jsj_ClearPendingJSErrors(jsj_env);
/*
* Release local references to Java objects, since some JVMs seem reticent
* about collecting them otherwise.
*/
if (message_jstr)
(*jEnv)->DeleteLocalRef(jEnv, message_jstr);
if (filename_jstr)
(*jEnv)->DeleteLocalRef(jEnv, filename_jstr);
if (linebuf_jstr)
(*jEnv)->DeleteLocalRef(jEnv, linebuf_jstr);
if (java_exception)
(*jEnv)->DeleteLocalRef(jEnv, java_exception);
}
/*
* Class: netscape_javascript_JSObject
* Method: eval
* Signature: (Ljava/lang/String;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL
Java_netscape_javascript_JSObject_eval(JNIEnv *jEnv,
jobject java_wrapper_obj,
jstring eval_jstr)
{
const char *codebase;
JSPrincipals *principals;
JSContext *cx = NULL;
JSBool eval_succeeded;
JSObject *js_obj;
jsval js_val;
int dummy_cost;
JSBool dummy_bool;
const jchar *eval_ucs2;
jsize eval_len;
JSErrorReporter saved_reporter;
jboolean is_copy;
jobject result;
JSJavaThreadState *jsj_env;
jsj_env = jsj_enter_js(jEnv, NULL, java_wrapper_obj, &cx, &js_obj, &saved_reporter, NULL, 0, NULL);
if (!jsj_env)
return NULL;
result = NULL;
eval_ucs2 = NULL;
if (!eval_jstr) {
JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL,
JSJMSG_NULL_EVAL_ARG);
goto done;
}
/* Get the string to eval as raw Unicode characters */
eval_ucs2 = (*jEnv)->GetStringChars(jEnv, eval_jstr, &is_copy);
if (!eval_ucs2) {
JS_ASSERT(0);
goto done;
}
eval_len = (*jEnv)->GetStringLength(jEnv, eval_jstr);
/* Set up security stuff */
principals = NULL;
if (JSJ_callbacks && JSJ_callbacks->get_JSPrincipals_from_java_caller)
principals = JSJ_callbacks->get_JSPrincipals_from_java_caller(jEnv, cx, NULL, 0, NULL);
codebase = principals ? principals->codebase : NULL;
/* Have the JS engine evaluate the unicode string */
eval_succeeded = JS_EvaluateUCScriptForPrincipals(cx, js_obj, principals,
eval_ucs2, eval_len,
codebase, 0, &js_val);
if (!eval_succeeded)
goto done;
/* Convert result to a subclass of java.lang.Object */
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &result, &dummy_bool);
done:
if (eval_ucs2)
(*jEnv)->ReleaseStringChars(jEnv, eval_jstr, eval_ucs2);
if (!jsj_exit_js(cx, jsj_env, saved_reporter))
return NULL;
return result;
}
/*
* Class: netscape_javascript_JSObject
* Method: call
* Signature: (Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/Object;
*/
JNIEXPORT jobject JNICALL
Java_netscape_javascript_JSObject_call(JNIEnv *jEnv, jobject java_wrapper_obj,
jstring function_name_jstr, jobjectArray java_args)
{
int i, argc, arg_num;
jsval *argv;
JSContext *cx = NULL;
JSObject *js_obj;
jsval js_val, function_val;
int dummy_cost;
JSBool dummy_bool;
const jchar *function_name_ucs2;
jsize function_name_len;
JSErrorReporter saved_reporter;
jboolean is_copy;
jobject result;
JSJavaThreadState *jsj_env;
jsj_env = jsj_enter_js(jEnv, NULL, java_wrapper_obj, &cx, &js_obj, &saved_reporter, NULL, 0, NULL);
if (!jsj_env)
return NULL;
function_name_ucs2 = NULL;
result = NULL;
if (!function_name_jstr) {
JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL,
JSJMSG_NULL_FUNCTION_NAME);
goto done;
}
/* Get the function name to eval as raw Unicode characters */
function_name_ucs2 = (*jEnv)->GetStringChars(jEnv, function_name_jstr, &is_copy);
if (!function_name_ucs2) {
JS_ASSERT(0);
goto done;
}
function_name_len = (*jEnv)->GetStringLength(jEnv, function_name_jstr);
/* Allocate space for JS arguments */
if (java_args) {
argc = (*jEnv)->GetArrayLength(jEnv, java_args);
argv = (jsval*)JS_malloc(cx, argc * sizeof(jsval));
} else {
argc = 0;
argv = 0;
}
/* Convert arguments from Java to JS values */
for (arg_num = 0; arg_num < argc; arg_num++) {
jobject arg = (*jEnv)->GetObjectArrayElement(jEnv, java_args, arg_num);
if (!jsj_ConvertJavaObjectToJSValue(cx, jEnv, arg, &argv[arg_num]))
goto cleanup_argv;
JS_AddNamedRoot(cx, &argv[arg_num], "&argv[arg_num]");
}
if (!JS_GetUCProperty(cx, js_obj, function_name_ucs2, function_name_len,
&function_val))
goto cleanup_argv;
if (!JS_CallFunctionValue(cx, js_obj, function_val, argc, argv, &js_val))
goto cleanup_argv;
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &result, &dummy_bool);
cleanup_argv:
if (argv) {
for (i = 0; i < arg_num; i++)
JS_RemoveRoot(cx, &argv[i]);
JS_free(cx, argv);
}
done:
if (function_name_ucs2)
(*jEnv)->ReleaseStringChars(jEnv, function_name_jstr, function_name_ucs2);
if (!jsj_exit_js(cx, jsj_env, saved_reporter))
return NULL;
return result;
}
NS_METHOD
nsCLiveconnect::Eval(JNIEnv *jEnv, lcjsobject obj, const jchar *script, jsize length, void* principalsArray[],
int numPrincipals, nsISupports *securitySupports, jobject *pjobj)
{
if(jEnv == NULL || obj == 0)
{
return NS_ERROR_FAILURE;
}
JSJavaThreadState *jsj_env = NULL;
JSObjectHandle *handle = (JSObjectHandle*)obj;
JSObject *js_obj = handle->js_obj;
JSContext *cx = NULL;
jsval js_val;
int dummy_cost = 0;
JSBool dummy_bool = PR_FALSE;
JSErrorReporter saved_state = NULL;
jobject result = NULL;
const char *codebase = NULL;
JSPrincipals *principals = NULL;
JSBool eval_succeeded = PR_FALSE;
jsj_env = jsj_enter_js(jEnv, mJavaClient, NULL, &cx, NULL, &saved_state, principalsArray, numPrincipals, securitySupports);
if (!jsj_env)
return NS_ERROR_FAILURE;
result = NULL;
AutoPushJSContext autopush(securitySupports, cx);
if (NS_FAILED(autopush.ResultOfPush()))
goto done;
if (!script) {
JS_ReportError(cx, "illegal null string eval argument");
goto done;
}
/* Set up security stuff */
if (JSJ_callbacks && JSJ_callbacks->get_JSPrincipals_from_java_caller)
principals = JSJ_callbacks->get_JSPrincipals_from_java_caller(jEnv, cx, principalsArray, numPrincipals, securitySupports);
codebase = principals ? principals->codebase : NULL;
/* Have the JS engine evaluate the unicode string */
eval_succeeded = JS_EvaluateUCScriptForPrincipals(cx, js_obj, principals,
script, length,
codebase, 0, &js_val);
if (!eval_succeeded)
goto done;
/* Convert result to a subclass of java.lang.Object */
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &result, &dummy_bool);
done:
if (principals)
JSPRINCIPALS_DROP(cx, principals);
if (!jsj_exit_js(cx, jsj_env, saved_state))
return NS_ERROR_FAILURE;
*pjobj = result;
return NS_OK;
}
/**
* call a method of Native JSObject.
*
* @param jEnv - JNIEnv on which the call is being made.
* @param obj - A Native JS Object.
* @param name - Name of a method.
* @param jobjArr - Array of jobjects representing parameters of method being caled.
* @param pjobj - return value.
*/
NS_METHOD
nsCLiveconnect::Call(JNIEnv *jEnv, lcjsobject obj, const jchar *name, jsize length, jobjectArray java_args, void* principalsArray[],
int numPrincipals, nsISupports *securitySupports, jobject *pjobj)
{
if(jEnv == NULL || obj == 0)
{
return NS_ERROR_FAILURE;
}
int i = 0;
int argc = 0;
int arg_num = 0;
jsval *argv = 0;
JSJavaThreadState *jsj_env = NULL;
JSObjectHandle *handle = (JSObjectHandle*)obj;
JSObject *js_obj = handle->js_obj;
JSContext *cx = NULL;
jsval js_val;
jsval function_val = 0;
int dummy_cost = 0;
JSBool dummy_bool = PR_FALSE;
JSErrorReporter saved_state = NULL;
jobject result = NULL;
jsj_env = jsj_enter_js(jEnv, mJavaClient, NULL, &cx, NULL, &saved_state, principalsArray, numPrincipals, securitySupports);
if (!jsj_env)
return NS_ERROR_FAILURE;
result = NULL;
AutoPushJSContext autopush(securitySupports, cx);
if (NS_FAILED(autopush.ResultOfPush()))
goto done;
if (!name) {
JS_ReportError(cx, "illegal null JavaScript function name");
goto done;
}
/* Allocate space for JS arguments */
argc = java_args ? jEnv->GetArrayLength(java_args) : 0;
if (argc) {
argv = (jsval*)JS_malloc(cx, argc * sizeof(jsval));
if (!argv)
goto done;
} else {
argv = 0;
}
/* Convert arguments from Java to JS values */
for (arg_num = 0; arg_num < argc; arg_num++) {
jobject arg = jEnv->GetObjectArrayElement(java_args, arg_num);
JSBool ret = jsj_ConvertJavaObjectToJSValue(cx, jEnv, arg, &argv[arg_num]);
jEnv->DeleteLocalRef(arg);
if (!ret)
goto cleanup_argv;
JS_AddRoot(cx, &argv[arg_num]);
}
if (!JS_GetUCProperty(cx, js_obj, name, length, &function_val))
goto cleanup_argv;
if (!JS_CallFunctionValue(cx, js_obj, function_val, argc, argv, &js_val))
goto cleanup_argv;
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &result, &dummy_bool);
cleanup_argv:
if (argv) {
for (i = 0; i < arg_num; i++)
JS_RemoveRoot(cx, &argv[i]);
JS_free(cx, argv);
}
done:
if (!jsj_exit_js(cx, jsj_env, saved_state))
return NS_ERROR_FAILURE;
*pjobj = result;
return NS_OK;
}
NS_INTERFACE_MAP_END
////////////////////////////////////////////////////////////////////////////
// from nsILiveconnect:
/**
* get member of a Native JSObject for a given name.
*
* @param jEnv - JNIEnv on which the call is being made.
* @param obj - A Native JS Object.
* @param name - Name of a member.
* @param pjobj - return parameter as a java object representing
* the member. If it is a basic data type it is converted to
* a corresponding java type. If it is a NJSObject, then it is
* wrapped up as java wrapper netscape.javascript.JSObject.
*/
NS_METHOD
nsCLiveconnect::GetMember(JNIEnv *jEnv, lcjsobject obj, const jchar *name, jsize length, void* principalsArray[],
int numPrincipals, nsISupports *securitySupports, jobject *pjobj)
{
if(jEnv == NULL || obj == 0)
{
return NS_ERROR_FAILURE;
}
JSJavaThreadState *jsj_env = NULL;
JSObjectHandle *handle = (JSObjectHandle*)obj;
JSObject *js_obj = handle->js_obj;
JSContext *cx = NULL;
jobject member = NULL;
jsval js_val;
int dummy_cost = 0;
JSBool dummy_bool = PR_FALSE;
JSErrorReporter saved_state = NULL;
jsj_env = jsj_enter_js(jEnv, mJavaClient, NULL, &cx, NULL, &saved_state, principalsArray, numPrincipals, securitySupports);
if (!jsj_env)
return NS_ERROR_FAILURE;
AutoPushJSContext autopush(securitySupports, cx);
if (NS_FAILED(autopush.ResultOfPush()))
goto done;
if (!name) {
JS_ReportError(cx, "illegal null member name");
member = NULL;
goto done;
}
if (!JS_GetUCProperty(cx, js_obj, name, length, &js_val))
goto done;
jsj_ConvertJSValueToJavaObject(cx, jEnv, js_val, jsj_get_jlObject_descriptor(cx, jEnv),
&dummy_cost, &member, &dummy_bool);
done:
if (!jsj_exit_js(cx, jsj_env, saved_state))
return NS_ERROR_FAILURE;
*pjobj = member;
return NS_OK;
}
