This commit brings the following changes to the logger:
All logging output generated by injected scriptlets are now sent to
the logger, the developer console will no longer be used to log
scriptlet logging information.
When the logger is not opened, the scriplets will not output any
logging information.
The goal with this new approach is to allow filter authors to
more easily assess the working of scriptlets without having to
go through scriptlet parameters to enable logging.
Consequently all the previous ways to tell scriptlets to log
information are now obsolete: if the logger is opened, the
scriptlets will log information to the logger.
Another benefit of this approach is that the dev tools do not
need to be open to obtain scriptlets logging information.
Accordingly, new filter expressions have been added to the logger:
"info" and "error". Selecting the "scriptlet" expression will also
keep the logging information from scriptlets.
A new button has been added to the logger (not yet i18n-ed): a
"volume" icon, which allows to enable verbose mode. When verbose
mode is enabled, the scriptlets may choose to output more
information regarding their inner working.
The entries in the logger will automatically expand on mouse hover.
This allows to scroll through entries which text does not fit into
a single row.
Clicking anywhere on an entry in the logger will open the detailed
view when applicable.
Generic information/errors will now be rendered regardless of which
tab is currently selected in the logger (similar to how tabless
entries are already being rendered).
If present, `elements` vararg must be a valid CSS selector, which will
be used to apply the scriptlet to only elements matching the
selector.
Related issue:
https://github.com/uBlockOrigin/uBlock-issues/issues/3061
Example of usage:
[...]##+js(aeld, click, return"undefined", elements, a.indirect)
Related issue:
https://github.com/uBlockOrigin/uBlock-issues/issues/2971
Example usage:
...##+js(trusted-trusted-click-element, #cmpwrapper >>> .cmpboxbtnyes)
The substring before ` >>> ` must select an element with a non-null
shadow root, in which case the substring after ` >>> ` will be used
to find the element in the targeted shadow root. ` >>> ` can be used
recursively when multiple shadow root must be pierced.
Related issue:
https://github.com/uBlockOrigin/uBlock-issues/issues/2526
Improvements:
Support fulfilling the response with the content of a
`web_accessible_resources` resource, using the syntax already
supported by `prevent-xhr`: `war:[name of resource]`
Support fulfilling the response with randomized text with length
specified using `length:min[-max]` directive.
Related discussion:
https://github.com/ameshkov/diffupdates
The benefits of diff-patching filter lists is much shorter update
schedule and significantly less bandwidth consumed.
At the moment, only default filter lists are subject to be
diff-patched.
External filter lists can make their lists diff-patchable by
following the specification link above.
Only filter lists fetched by the auto-updater are candidate for
diff-patching.
Forcing a manual update of the filter lists will prevent the
diff-patcher from kicking in until one or more lists are
auto-updated.
Some back-of-the-envelop calculations regarding the load on free
CDN solutions used by uBO to distribute its own filter lists:
Currently, for each CDN (with lists updating after days):
~560 M req/month, ~78 TB/month
With diff-patching lists on a 6-hour schedule:
~390 M req/month, 1 TB/month
Those estimates were done according to statistics shown by
jsDelivr, which is one of 4 CDNs picked randomly when a list
updates:
https://www.jsdelivr.com/package/gh/uBlockOrigin/uAssetsCDN?tab=stats
Essentially a complement of `trusted-prune-inbound-object.js` added in
1c9da227d7
To perform object pruning on any object returned synchronously by
any given call.
The arguments for `trusted-prune-outbound-object` in order are:
- The name of the property to trap. Must be a function, and must
exist when the scriptlet tries to install the trap.
- The properties to prune (as with `json-prune`)
- The properties which must all be present for pruning to occur
(as with `json-prune`)
The scriptlets `json-prune.js` and `evaldata-prune.js` essentially
perform the same function, and will eventually be rewritten to
internally delegate to generic `trusted-prune-outbound-object.js`.
As per discussion with filter list maintainers.
To perform object pruning for any given call which has an object
as argument (hence "inbound").
Since `json-prune-stringify` scriptlet is a specific form of
pruning inbound objects, it has been removed.
The arguments for `trusted-prune-inbound-object` in order are:
- The name of the property to trap. Must be a function, and must
exist when the scriptlet tries to install the trap.
- The position of the object to prune in the argument list when
the trapped function is called. The position is 1-based and
must be an integer greater than 0.
- The properties to prune (as with `json-prune`)
- The properties which must all be present for pruning to occur
(as with `json-prune`)
- Varargs:
- `, dontOverwrite, 1`: do not modify the target inbound object
Examples:
Remove `title` and `name` properties before passing the object to
`JSON.stringify` call:
example.org##+js(trusted-prune-inbound-object, JSON.stringify, 1, title name)
Remove `status` property before passing the object to `Object.keys`
call but do not modify caller's instance of the object:
example.org##+js(trusted-prune-inbound-object, Object.keys, 1, status, , dontOverwrite, 1)
Raymond Hill