[quickjs] window.c

src/ecmascript/ecmascript.c

@@ -600,6 +600,22 @@ ecmascript_set_timeout2(struct ecmascript_interpreter *interpreter, JS::HandleVa
 }
 #endif
 
+#ifdef CONFIG_QUICKJS
+void
+ecmascript_set_timeout2q(struct ecmascript_interpreter *interpreter, JSValue f, int timeout)
+{
+#if 0
+	assert(interpreter && interpreter->vs->doc_view->document);
+	done_string(&interpreter->code);
+	init_string(&interpreter->code);
+	kill_timer(&interpreter->vs->doc_view->document->timeout);
+	JS::RootedValue fun((JSContext *)interpreter->backend_data, f);
+	interpreter->fun = fun;
+	install_timer(&interpreter->vs->doc_view->document->timeout, timeout, ecmascript_timeout_handler2, interpreter);
+#endif
+}
+#endif
+
 static void
 init_ecmascript_module(struct module *module)
 {

src/ecmascript/ecmascript.h

@@ -138,6 +138,10 @@ void ecmascript_set_timeout(struct ecmascript_interpreter *interpreter, char *co
 void ecmascript_set_timeout2(struct ecmascript_interpreter *interpreter, JS::HandleValue f, int timeout);
 #endif
 
+#ifdef CONFIG_QUICKJS
+void ecmascript_set_timeout2q(struct ecmascript_interpreter *interpreter, JSValue f, int timeout);
+#endif
+
 int get_ecmascript_enable(struct ecmascript_interpreter *interpreter);
 
 void check_for_rerender(struct ecmascript_interpreter *interpreter, const char* text);

src/ecmascript/quickjs.c

@@ -162,10 +162,7 @@ quickjs_get_interpreter(struct ecmascript_interpreter *interpreter)
 //	JS::RootedObject window_obj(ctx, JS_NewGlobalObject(ctx, &window_class, NULL, JS::FireOnNewGlobalHook, options));
 
 	JSValue global_obj = JS_GetGlobalObject(ctx);
-	JSValue window_obj = JS_NewObject(ctx);
+	js_window_init(ctx, global_obj);
-	JS_SetPropertyStr(ctx, window_obj, "alert",
-	                  JS_NewCFunction(ctx, js_window_alert, "alert", 1));
-	JS_SetPropertyStr(ctx, global_obj, "window", window_obj);
 	js_screen_init(ctx, global_obj);
 	js_unibar_init(ctx, global_obj);
 	js_navigator_init(ctx, global_obj);

src/ecmascript/quickjs/window.c

@@ -41,6 +41,313 @@
 #include "viewer/text/link.h"
 #include "viewer/text/vs.h"
 
+#define countof(x) (sizeof(x) / sizeof((x)[0]))
+
+static JSClassID js_window_class_id;
+
+static JSValue
+try_resolve_frame(struct document_view *doc_view, char *id)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	struct session *ses = doc_view->session;
+	struct frame *target;
+
+	assert(ses);
+	target = ses_find_frame(ses, id);
+	if (!target) return JS_NULL;
+	if (target->vs.ecmascript_fragile)
+		ecmascript_reset_state(&target->vs);
+	if (!target->vs.ecmascript) return JS_NULL;
+	return JS_GetGlobalObject(target->vs.ecmascript->backend_data);
+}
+
+/* @window_funcs{"open"} */
+JSValue
+js_window_open(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	struct view_state *vs;
+	struct document_view *doc_view;
+	struct session *ses;
+	const char *frame = NULL;
+	char *url, *url2;
+	struct uri *uri;
+	static time_t ratelimit_start;
+	static int ratelimit_count;
+
+	struct ecmascript_interpreter *interpreter = (struct ecmascript_interpreter *)JS_GetContextOpaque(ctx);
+	vs = interpreter->vs;
+	doc_view = vs->doc_view;
+	ses = doc_view->session;
+
+	if (get_opt_bool("ecmascript.block_window_opening", ses)) {
+#ifdef CONFIG_LEDS
+		set_led_value(ses->status.popup_led, 'P');
+#endif
+		return JS_UNDEFINED;
+	}
+
+	if (argc < 1) return JS_UNDEFINED;
+
+	/* Ratelimit window opening. Recursive window.open() is very nice.
+	 * We permit at most 20 tabs in 2 seconds. The ratelimiter is very
+	 * rough but shall suffice against the usual cases. */
+	if (!ratelimit_start || time(NULL) - ratelimit_start > 2) {
+		ratelimit_start = time(NULL);
+		ratelimit_count = 0;
+	} else {
+		ratelimit_count++;
+		if (ratelimit_count > 20) {
+			return JS_UNDEFINED;
+		}
+	}
+
+	const char *str, *string;
+	size_t len;
+
+	str = JS_ToCStringLen(ctx, &len, argv[0]);
+
+	if (!str) {
+		return JS_EXCEPTION;
+	}
+
+	url = stracpy(str);
+	JS_FreeCString(ctx, str);
+
+	if (!url) {
+		return JS_UNDEFINED;
+	}
+	trim_chars(url, ' ', 0);
+	url2 = join_urls(doc_view->document->uri, url);
+	mem_free(url);
+
+	if (!url2) {
+		return JS_UNDEFINED;
+	}
+
+	if (argc > 1) {
+		size_t len2;
+		frame = JS_ToCStringLen(ctx, &len2, argv[1]);
+
+		if (!frame) {
+			mem_free(url2);
+			return JS_EXCEPTION;
+		}
+	}
+
+	/* TODO: Support for window naming and perhaps some window features? */
+
+	uri = get_uri(url2, 0);
+	mem_free(url2);
+	if (!uri) {
+		if (frame) JS_FreeCString(ctx, frame);
+		return JS_UNDEFINED;
+	}
+
+	JSValue ret;
+
+	if (frame && *frame && c_strcasecmp(frame, "_blank")) {
+		struct delayed_open *deo = mem_calloc(1, sizeof(*deo));
+
+		if (deo) {
+			deo->ses = ses;
+			deo->uri = get_uri_reference(uri);
+			deo->target = stracpy(frame);
+			register_bottom_half(delayed_goto_uri_frame, deo);
+			ret = JS_TRUE;
+			goto end;
+		}
+	}
+
+	if (!get_cmd_opt_bool("no-connect")
+	    && !get_cmd_opt_bool("no-home")
+	    && !get_cmd_opt_bool("anonymous")
+	    && can_open_in_new(ses->tab->term)) {
+		open_uri_in_new_window(ses, uri, NULL, ENV_ANY,
+				       CACHE_MODE_NORMAL, TASK_NONE);
+		ret = JS_TRUE;
+	} else {
+		/* When opening a new tab, we might get rerendered, losing our
+		 * context and triggerring a disaster, so postpone that. */
+		struct delayed_open *deo = mem_calloc(1, sizeof(*deo));
+
+		if (deo) {
+			deo->ses = ses;
+			deo->uri = get_uri_reference(uri);
+			register_bottom_half(delayed_open, deo);
+			ret = JS_TRUE;
+		} else {
+			ret = JS_UNDEFINED;
+		}
+	}
+
+end:
+	done_uri(uri);
+	if (frame) JS_FreeCString(ctx, frame);
+
+	return ret;
+}
+
+/* @window_funcs{"setTimeout"} */
+JSValue
+js_window_setTimeout(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	struct ecmascript_interpreter *interpreter = (struct ecmascript_interpreter *)JS_GetContextOpaque(ctx);
+	const char *code;
+	int timeout = 0;
+
+	if (argc != 2) {
+		return JS_UNDEFINED;
+	}
+
+	JS_ToInt32(ctx, &timeout, argv[1]);
+
+	if (timeout <= 0) {
+		return JS_UNDEFINED;
+	}
+
+	if (JS_IsString(argv[0])) {
+		size_t len;
+		code = JS_ToCStringLen(ctx, &len, argv[0]);
+
+		if (!code) {
+			return JS_EXCEPTION;
+		}
+
+		ecmascript_set_timeout(interpreter, code, timeout);
+		return JS_UNDEFINED;
+	}
+
+	ecmascript_set_timeout2q(interpreter, argv[0], timeout);
+	return JS_UNDEFINED;
+}
+
+static JSValue
+js_window_get_property_closed(JSContext *ctx, JSValueConst this_val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	return JS_FALSE;
+}
+
+static JSValue
+js_window_get_property_parent(JSContext *ctx, JSValueConst this_val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	/* XXX: It would be nice if the following worked, yes.
+	 * The problem is that we get called at the point where
+	 * document.frame properties are going to be mostly NULL.
+	 * But the problem is deeper because at that time we are
+	 * yet building scrn_frames so our parent might not be there
+	 * yet (XXX: is this true?). The true solution will be to just
+	 * have struct document_view *(document_view.parent). --pasky */
+	/* FIXME: So now we alias window.parent to window.top, which is
+	 * INCORRECT but works for the most common cases of just two
+	 * frames. Better something than nothing. */
+
+	return JS_UNDEFINED;
+}
+
+static JSValue
+js_window_get_property_self(JSContext *ctx, JSValueConst this_val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	return JS_DupValue(ctx, this_val);
+}
+
+static JSValue
+js_window_get_property_status(JSContext *ctx, JSValueConst this_val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	return JS_UNDEFINED;
+}
+
+static JSValue
+js_window_set_property_status(JSContext *ctx, JSValueConst this_val, JSValue val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	struct ecmascript_interpreter *interpreter = (struct ecmascript_interpreter *)JS_GetContextOpaque(ctx);
+	struct view_state *vs = interpreter->vs;
+
+	if (!vs) {
+		return JS_UNDEFINED;
+	}
+	size_t len;
+	const char *str = JS_ToCStringLen(ctx, &len, val);
+
+	if (!str) {
+		return JS_EXCEPTION;
+	}
+	char *text = stracpy(str);
+	JS_FreeCString(ctx, str);
+
+	mem_free_set(&vs->doc_view->session->status.window_status, text);
+	print_screen_status(vs->doc_view->session);
+
+	return JS_UNDEFINED;
+}
+
+static JSValue
+js_window_get_property_top(JSContext *ctx, JSValueConst this_val)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	struct document_view *doc_view;
+	struct document_view *top_view;
+	JSValue newjsframe;
+	struct ecmascript_interpreter *interpreter = (struct ecmascript_interpreter *)JS_GetContextOpaque(ctx);
+	struct view_state *vs = interpreter->vs;
+
+	if (!vs) {
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s %d\n", __FILE__, __FUNCTION__, __LINE__);
+#endif
+		return JS_UNDEFINED;
+	}
+	doc_view = vs->doc_view;
+	top_view = doc_view->session->doc_view;
+
+	assert(top_view && top_view->vs);
+	if (top_view->vs->ecmascript_fragile)
+		ecmascript_reset_state(top_view->vs);
+	if (!top_view->vs->ecmascript) {
+		return JS_UNDEFINED;
+	}
+	newjsframe = JS_GetGlobalObject(top_view->vs->ecmascript->backend_data);
+
+	/* Keep this unrolled this way. Will have to check document.domain
+	 * JS property. */
+	/* Note that this check is perhaps overparanoid. If top windows
+	 * is alien but some other child window is not, we should still
+	 * let the script walk thru. That'd mean moving the check to
+	 * other individual properties in this switch. */
+	if (compare_uri(vs->uri, top_view->vs->uri, URI_HOST)) {
+		return newjsframe;
+	}
+		/* else */
+		/****X*X*X*** SECURITY VIOLATION! RED ALERT, SHIELDS UP! ***X*X*X****\
+		|* (Pasky was apparently looking at the Links2 JS code   .  ___ ^.^ *|
+		\* for too long.)                                        `.(,_,)\o/ */
+	return JS_UNDEFINED;
+}
+
 JSValue
 js_window_alert(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
 {
@@ -73,3 +380,65 @@ js_window_alert(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *a
 
 	return JS_UNDEFINED;
 }
+
+static const JSCFunctionListEntry js_window_proto_funcs[] = {
+	JS_CGETSET_DEF("closed", js_window_get_property_closed, nullptr),
+	JS_CGETSET_DEF("parent", js_window_get_property_parent, nullptr),
+	JS_CGETSET_DEF("self", js_window_get_property_self, nullptr),
+	JS_CGETSET_DEF("status", js_window_get_property_status, js_window_set_property_status),
+	JS_CGETSET_DEF("top", js_window_get_property_top, nullptr),
+	JS_CGETSET_DEF("window", js_window_get_property_self, nullptr),
+	JS_CFUNC_DEF("alert", 1, js_window_alert),
+	JS_CFUNC_DEF("open", 3, js_window_open),
+	JS_CFUNC_DEF("setTimeout", 2, js_window_setTimeout),
+};
+
+static JSClassDef js_window_class = {
+	"window",
+};
+
+static JSValue
+js_window_ctor(JSContext *ctx, JSValueConst new_target, int argc, JSValueConst *argv)
+{
+	JSValue obj = JS_UNDEFINED;
+	JSValue proto;
+	/* using new_target to get the prototype is necessary when the
+	 class is extended. */
+	proto = JS_GetPropertyStr(ctx, new_target, "prototype");
+
+	if (JS_IsException(proto)) {
+		goto fail;
+	}
+	obj = JS_NewObjectProtoClass(ctx, proto, js_window_class_id);
+	JS_FreeValue(ctx, proto);
+
+	if (JS_IsException(obj)) {
+		goto fail;
+	}
+	return obj;
+
+fail:
+	JS_FreeValue(ctx, obj);
+	return JS_EXCEPTION;
+}
+
+int
+js_window_init(JSContext *ctx, JSValue global_obj)
+{
+	JSValue window_proto, window_class;
+
+	/* create the window class */
+	JS_NewClassID(&js_window_class_id);
+	JS_NewClass(JS_GetRuntime(ctx), js_window_class_id, &js_window_class);
+
+	window_proto = JS_NewObject(ctx);
+	JS_SetPropertyFunctionList(ctx, window_proto, js_window_proto_funcs, countof(js_window_proto_funcs));
+
+	window_class = JS_NewCFunction2(ctx, js_window_ctor, "window", 0, JS_CFUNC_constructor, 0);
+	/* set proto.constructor and ctor.prototype */
+	JS_SetConstructor(ctx, window_class, window_proto);
+	JS_SetClassProto(ctx, js_window_class_id, window_proto);
+
+	JS_SetPropertyStr(ctx, global_obj, "window", window_proto);
+	return 0;
+}

src/ecmascript/quickjs/window.h

@@ -1,10 +1,8 @@
-
 #ifndef EL__ECMASCRIPT_QUICKJS_WINDOW_H
 #define EL__ECMASCRIPT_QUICKJS_WINDOW_H
 
 #include <quickjs/quickjs.h>
 
-JSValue js_window_alert(JSContext *ctx, JSValueConst this_val,
+int js_window_init(JSContext *ctx, JSValue global_obj);
-                              int argc, JSValueConst *argv);
 
 #endif