mirror of
https://github.com/rkd77/elinks.git
synced 2024-09-29 03:17:53 -04:00
317 lines
8.3 KiB
C
317 lines
8.3 KiB
C
/* The SpiderMonkey ECMAScript backend. */
|
|
/* $Id: spidermonkey.c,v 1.227 2005/09/14 22:57:16 pasky Exp $ */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "elinks.h"
|
|
|
|
#include "ecmascript/spidermonkey/util.h"
|
|
|
|
#include "bfu/dialog.h"
|
|
#include "cache/cache.h"
|
|
#include "cookies/cookies.h"
|
|
#include "dialogs/menu.h"
|
|
#include "dialogs/status.h"
|
|
#include "document/html/frames.h"
|
|
#include "document/document.h"
|
|
#include "document/forms.h"
|
|
#include "document/view.h"
|
|
#include "ecmascript/ecmascript.h"
|
|
#include "ecmascript/spidermonkey.h"
|
|
#include "ecmascript/spidermonkey/document.h"
|
|
#include "ecmascript/spidermonkey/form.h"
|
|
#include "ecmascript/spidermonkey/location.h"
|
|
#include "ecmascript/spidermonkey/navigator.h"
|
|
#include "ecmascript/spidermonkey/unibar.h"
|
|
#include "ecmascript/spidermonkey/window.h"
|
|
#include "intl/gettext/libintl.h"
|
|
#include "main/select.h"
|
|
#include "osdep/newwin.h"
|
|
#include "osdep/sysname.h"
|
|
#include "protocol/http/http.h"
|
|
#include "protocol/uri.h"
|
|
#include "session/history.h"
|
|
#include "session/location.h"
|
|
#include "session/session.h"
|
|
#include "session/task.h"
|
|
#include "terminal/tab.h"
|
|
#include "terminal/terminal.h"
|
|
#include "util/conv.h"
|
|
#include "util/string.h"
|
|
#include "viewer/text/draw.h"
|
|
#include "viewer/text/form.h"
|
|
#include "viewer/text/link.h"
|
|
#include "viewer/text/vs.h"
|
|
|
|
|
|
|
|
/*** Global methods */
|
|
|
|
|
|
/* TODO? Are there any which need to be implemented? */
|
|
|
|
|
|
|
|
/*** The ELinks interface */
|
|
|
|
static JSRuntime *jsrt;
|
|
|
|
static void
|
|
error_reporter(JSContext *ctx, const char *message, JSErrorReport *report)
|
|
{
|
|
struct ecmascript_interpreter *interpreter = JS_GetContextPrivate(ctx);
|
|
struct terminal *term;
|
|
unsigned char *strict, *exception, *warning, *error;
|
|
struct string msg;
|
|
|
|
assert(interpreter && interpreter->vs && interpreter->vs->doc_view
|
|
&& interpreter->vs->doc_view->session
|
|
&& interpreter->vs->doc_view->session->tab);
|
|
if_assert_failed goto reported;
|
|
|
|
term = interpreter->vs->doc_view->session->tab->term;
|
|
|
|
#ifdef CONFIG_LEDS
|
|
set_led_value(interpreter->vs->doc_view->session->status.ecmascript_led, 'J');
|
|
#endif
|
|
|
|
if (!get_opt_bool("ecmascript.error_reporting")
|
|
|| !init_string(&msg))
|
|
goto reported;
|
|
|
|
strict = JSREPORT_IS_STRICT(report->flags) ? " strict" : "";
|
|
exception = JSREPORT_IS_EXCEPTION(report->flags) ? " exception" : "";
|
|
warning = JSREPORT_IS_WARNING(report->flags) ? " warning" : "";
|
|
error = !report->flags ? " error" : "";
|
|
|
|
add_format_to_string(&msg, _("A script embedded in the current "
|
|
"document raised the following%s%s%s%s", term),
|
|
strict, exception, warning, error);
|
|
|
|
add_to_string(&msg, ":\n\n");
|
|
add_to_string(&msg, message);
|
|
|
|
if (report->linebuf && report->tokenptr) {
|
|
int pos = report->tokenptr - report->linebuf;
|
|
|
|
add_format_to_string(&msg, "\n\n%s\n.%*s^%*s.",
|
|
report->linebuf,
|
|
pos - 2, " ",
|
|
strlen(report->linebuf) - pos - 1, " ");
|
|
}
|
|
|
|
info_box(term, MSGBOX_FREE_TEXT, N_("JavaScript Error"), ALIGN_CENTER,
|
|
msg.source);
|
|
|
|
reported:
|
|
/* Im clu'les. --pasky */
|
|
JS_ClearPendingException(ctx);
|
|
}
|
|
|
|
static JSBool
|
|
safeguard(JSContext *ctx, JSScript *script)
|
|
{
|
|
struct ecmascript_interpreter *interpreter = JS_GetContextPrivate(ctx);
|
|
int max_exec_time = get_opt_int("ecmascript.max_exec_time");
|
|
|
|
if (time(NULL) - interpreter->exec_start > max_exec_time) {
|
|
struct terminal *term = interpreter->vs->doc_view->session->tab->term;
|
|
|
|
/* A killer script! Alert! */
|
|
info_box(term, MSGBOX_FREE_TEXT,
|
|
N_("JavaScript Emergency"), ALIGN_LEFT,
|
|
msg_text(term,
|
|
N_("A script embedded in the current document was running\n"
|
|
"for more than %d seconds. This probably means there is\n"
|
|
"a bug in the script and it could have halted the whole\n"
|
|
"ELinks, so the script execution was interrupted."),
|
|
max_exec_time));
|
|
return JS_FALSE;
|
|
}
|
|
return JS_TRUE;
|
|
}
|
|
|
|
static void
|
|
setup_safeguard(struct ecmascript_interpreter *interpreter,
|
|
JSContext *ctx)
|
|
{
|
|
interpreter->exec_start = time(NULL);
|
|
JS_SetBranchCallback(ctx, safeguard);
|
|
}
|
|
|
|
|
|
void
|
|
spidermonkey_init(void)
|
|
{
|
|
jsrt = JS_NewRuntime(0x400000UL);
|
|
}
|
|
|
|
void
|
|
spidermonkey_done(void)
|
|
{
|
|
JS_DestroyRuntime(jsrt);
|
|
JS_ShutDown();
|
|
}
|
|
|
|
|
|
void *
|
|
spidermonkey_get_interpreter(struct ecmascript_interpreter *interpreter)
|
|
{
|
|
JSContext *ctx;
|
|
JSObject *window_obj, *document_obj, *forms_obj, *history_obj, *location_obj,
|
|
*statusbar_obj, *menubar_obj, *navigator_obj;
|
|
|
|
assert(interpreter);
|
|
|
|
ctx = JS_NewContext(jsrt, 8192 /* Stack allocation chunk size */);
|
|
if (!ctx)
|
|
return NULL;
|
|
interpreter->backend_data = ctx;
|
|
JS_SetContextPrivate(ctx, interpreter);
|
|
/* TODO: Make JSOPTION_STRICT and JSOPTION_WERROR configurable. */
|
|
#ifndef JSOPTION_COMPILE_N_GO
|
|
#define JSOPTION_COMPILE_N_GO 0 /* Older SM versions don't have it. */
|
|
#endif
|
|
/* XXX: JSOPTION_COMPILE_N_GO will go (will it?) when we implement
|
|
* some kind of bytecode cache. (If we will ever do that.) */
|
|
JS_SetOptions(ctx, JSOPTION_VAROBJFIX | JSOPTION_COMPILE_N_GO);
|
|
JS_SetErrorReporter(ctx, error_reporter);
|
|
|
|
window_obj = JS_NewObject(ctx, (JSClass *) &window_class, NULL, NULL);
|
|
if (!window_obj) {
|
|
spidermonkey_put_interpreter(interpreter);
|
|
return NULL;
|
|
}
|
|
JS_InitStandardClasses(ctx, window_obj);
|
|
JS_DefineProperties(ctx, window_obj, (JSPropertySpec *) window_props);
|
|
JS_DefineFunctions(ctx, window_obj, (JSFunctionSpec *) window_funcs);
|
|
JS_SetPrivate(ctx, window_obj, interpreter->vs);
|
|
|
|
document_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &document_class, NULL, 0,
|
|
(JSPropertySpec *) document_props,
|
|
(JSFunctionSpec *) document_funcs,
|
|
NULL, NULL);
|
|
|
|
forms_obj = JS_InitClass(ctx, document_obj, NULL,
|
|
(JSClass *) &forms_class, NULL, 0,
|
|
(JSPropertySpec *) forms_props,
|
|
(JSFunctionSpec *) forms_funcs,
|
|
NULL, NULL);
|
|
|
|
history_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &history_class, NULL, 0,
|
|
(JSPropertySpec *) NULL,
|
|
(JSFunctionSpec *) history_funcs,
|
|
NULL, NULL);
|
|
|
|
location_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &location_class, NULL, 0,
|
|
(JSPropertySpec *) location_props,
|
|
(JSFunctionSpec *) location_funcs,
|
|
NULL, NULL);
|
|
|
|
menubar_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &menubar_class, NULL, 0,
|
|
(JSPropertySpec *) unibar_props, NULL,
|
|
NULL, NULL);
|
|
JS_SetPrivate(ctx, menubar_obj, "t");
|
|
|
|
statusbar_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &statusbar_class, NULL, 0,
|
|
(JSPropertySpec *) unibar_props, NULL,
|
|
NULL, NULL);
|
|
JS_SetPrivate(ctx, statusbar_obj, "s");
|
|
|
|
navigator_obj = JS_InitClass(ctx, window_obj, NULL,
|
|
(JSClass *) &navigator_class, NULL, 0,
|
|
(JSPropertySpec *) navigator_props, NULL,
|
|
NULL, NULL);
|
|
|
|
return ctx;
|
|
}
|
|
|
|
void
|
|
spidermonkey_put_interpreter(struct ecmascript_interpreter *interpreter)
|
|
{
|
|
JSContext *ctx;
|
|
|
|
assert(interpreter);
|
|
ctx = interpreter->backend_data;
|
|
JS_DestroyContext(ctx);
|
|
interpreter->backend_data = NULL;
|
|
}
|
|
|
|
|
|
void
|
|
spidermonkey_eval(struct ecmascript_interpreter *interpreter,
|
|
struct string *code)
|
|
{
|
|
JSContext *ctx;
|
|
jsval rval;
|
|
|
|
assert(interpreter);
|
|
ctx = interpreter->backend_data;
|
|
setup_safeguard(interpreter, ctx);
|
|
JS_EvaluateScript(ctx, JS_GetGlobalObject(ctx),
|
|
code->source, code->length, "", 0, &rval);
|
|
}
|
|
|
|
|
|
unsigned char *
|
|
spidermonkey_eval_stringback(struct ecmascript_interpreter *interpreter,
|
|
struct string *code)
|
|
{
|
|
JSContext *ctx;
|
|
jsval rval;
|
|
|
|
assert(interpreter);
|
|
ctx = interpreter->backend_data;
|
|
setup_safeguard(interpreter, ctx);
|
|
if (JS_EvaluateScript(ctx, JS_GetGlobalObject(ctx),
|
|
code->source, code->length, "", 0, &rval)
|
|
== JS_FALSE) {
|
|
return NULL;
|
|
}
|
|
if (JSVAL_IS_VOID(rval)) {
|
|
/* Undefined value. */
|
|
return NULL;
|
|
}
|
|
|
|
return stracpy(jsval_to_string(ctx, &rval));
|
|
}
|
|
|
|
|
|
int
|
|
spidermonkey_eval_boolback(struct ecmascript_interpreter *interpreter,
|
|
struct string *code)
|
|
{
|
|
JSContext *ctx;
|
|
jsval rval;
|
|
int ret;
|
|
|
|
assert(interpreter);
|
|
ctx = interpreter->backend_data;
|
|
setup_safeguard(interpreter, ctx);
|
|
ret = JS_EvaluateScript(ctx, JS_GetGlobalObject(ctx),
|
|
code->source, code->length, "", 0, &rval);
|
|
if (ret == 2) { /* onClick="history.back()" */
|
|
return 0;
|
|
}
|
|
if (ret == JS_FALSE) {
|
|
return -1;
|
|
}
|
|
if (JSVAL_IS_VOID(rval)) {
|
|
/* Undefined value. */
|
|
return -1;
|
|
}
|
|
|
|
return jsval_to_boolean(ctx, &rval);
|
|
}
|