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Debian bug 534835: Check some SpiderMonkey return values

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Perhaps because of bug 981, if one opened hundreds of pages with
elinks --remote openURL(...), then ELinks 0.11.4 could crash with a
SIGSEGV in JS_InitClass called from spidermonkey_get_interpreter.
SpiderMonkey ran out of memory and began returning NULL and JS_FALSE
but ELinks didn't notice them and pressed on.  Add some checks to
avoid the crash, although the underlying out-of-memory error remains.
This commit is contained in:
Kalle Olavi Niemitalo 2009-06-27 19:48:56 +03:00 committed by Kalle Olavi Niemitalo
parent 645e9f22fe
commit 10c07f9933
3 changed files with 37 additions and 19 deletions
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2
NEWS
View File

@ -11,6 +11,8 @@ ELinks 0.12pre4.GIT now:
To be released as 0.12pre5, 0.12rc1, or even 0.12.0. This branch also
includes the changes listed under ``ELinks 0.11.6.GIT now'' below.
* Debian bug 534835: Check the return values of some SpiderMonkey
functions, to avoid crashes if out of memory.
* bug 1080: Support ``--dump-color-mode'' with ``--dump-charset UTF-8''.
* minor bug 1017: To work around HTTP server bugs, disable
protocol.http.compression by default, until ELinks can report

33
src/ecmascript/spidermonkey.c
View File

@ -174,57 +174,70 @@ spidermonkey_get_interpreter(struct ecmascript_interpreter *interpreter)
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);
spidermonkey_DefineFunctions(ctx, window_obj, window_funcs);
JS_SetPrivate(ctx, window_obj, interpreter->vs); /* to @window_class */
if (!window_obj) goto release_and_fail;
if (!JS_InitStandardClasses(ctx, window_obj)) goto release_and_fail;
if (!JS_DefineProperties(ctx, window_obj, (JSPropertySpec *) window_props))
goto release_and_fail;
if (!spidermonkey_DefineFunctions(ctx, window_obj, window_funcs))
goto release_and_fail;
if (!JS_SetPrivate(ctx, window_obj, interpreter->vs)) /* to @window_class */
goto release_and_fail;
document_obj = spidermonkey_InitClass(ctx, window_obj, NULL,
(JSClass *) &document_class, NULL, 0,
(JSPropertySpec *) document_props,
document_funcs,
NULL, NULL);
if (!document_obj) goto release_and_fail;
forms_obj = spidermonkey_InitClass(ctx, document_obj, NULL,
(JSClass *) &forms_class, NULL, 0,
(JSPropertySpec *) forms_props,
forms_funcs,
NULL, NULL);
if (!forms_obj) goto release_and_fail;
history_obj = spidermonkey_InitClass(ctx, window_obj, NULL,
(JSClass *) &history_class, NULL, 0,
(JSPropertySpec *) NULL,
history_funcs,
NULL, NULL);
if (!history_obj) goto release_and_fail;
location_obj = spidermonkey_InitClass(ctx, window_obj, NULL,
(JSClass *) &location_class, NULL, 0,
(JSPropertySpec *) location_props,
location_funcs,
NULL, NULL);
if (!location_obj) goto release_and_fail;
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"); /* to @menubar_class */
if (!menubar_obj) goto release_and_fail;
if (!JS_SetPrivate(ctx, menubar_obj, "t")) /* to @menubar_class */
goto release_and_fail;
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"); /* to @statusbar_class */
if (!statusbar_obj) goto release_and_fail;
if (!JS_SetPrivate(ctx, statusbar_obj, "s")) /* to @statusbar_class */
goto release_and_fail;
navigator_obj = JS_InitClass(ctx, window_obj, NULL,
(JSClass *) &navigator_class, NULL, 0,
(JSPropertySpec *) navigator_props, NULL,
NULL, NULL);
if (!navigator_obj) goto release_and_fail;
return ctx;
release_and_fail:
spidermonkey_put_interpreter(interpreter);
return NULL;
}
void

21
src/scripting/smjs/elinks_object.c
View File

@ -134,16 +134,19 @@ smjs_get_elinks_object(void)
jsobj = spidermonkey_InitClass(smjs_ctx, smjs_global_object, NULL,
(JSClass *) &elinks_class, NULL, 0, NULL,
elinks_funcs, NULL, NULL);
if (!jsobj) return NULL;
JS_DefineProperty(smjs_ctx, jsobj, "location", JSVAL_NULL,
elinks_get_location, elinks_set_location,
JSPROP_ENUMERATE | JSPROP_PERMANENT);
if (!JS_DefineProperty(smjs_ctx, jsobj, "location", JSVAL_NULL,
elinks_get_location, elinks_set_location,
JSPROP_ENUMERATE | JSPROP_PERMANENT))
return NULL;
JS_DefineProperty(smjs_ctx, jsobj, "home", JSVAL_NULL,
elinks_get_home, JS_PropertyStub,
JSPROP_ENUMERATE
| JSPROP_PERMANENT
| JSPROP_READONLY);
if (!JS_DefineProperty(smjs_ctx, jsobj, "home", JSVAL_NULL,
elinks_get_home, JS_PropertyStub,
JSPROP_ENUMERATE
| JSPROP_PERMANENT
| JSPROP_READONLY))
return NULL;
return jsobj;
}
@ -151,7 +154,7 @@ smjs_get_elinks_object(void)
void
smjs_init_elinks_object(void)
{
smjs_elinks_object = smjs_get_elinks_object();
smjs_elinks_object = smjs_get_elinks_object(); /* TODO: check NULL */
smjs_init_action_interface();
smjs_init_bookmarks_interface();