When we click the download button in PDF.js, it downloads a blob://qute:...
URL. We can detect that and force a download rather than opening it in PDF.js
again.
Note that what actually happens depends on the Qt version and backend:
QtWebKit (any Qt version):
Downloads always work properly (regardless of Qt version).
QtWebEngine, Qt 5.7.1:
Downloads work.
QtWebEngine, Qt 5.9 - 5.11:
Downloads won't work as we need to tell PDF.js to not use blob: URLs:
https://bugreports.qt.io/browse/QTBUG-70420 - in theory, PDF.js could fall back
to downloading the existing qute:// URL, but it has a whitelist of schemes
which does not include qute://... Since it's not in that whitelist, it just
ends up doing nothing at all.
QtWebEngine, Qt 5.12:
Downloads should hopefully work properly again, as we can register the qute://
scheme with Chromium, which allows us to use blob:// URLs.
This reverts commit 9c731bde85627308fdde4730b0181a014096cb47.
We need to set some PDF.js options, so we can't just use the default viewer
with ?file=...
Adds a new file for tests relating to WebEngineTab, it looks a little
sparse right now but I'm sure there will be more soon.
Tests that scripts with invalid world IDs are rejected appropriately and
the ones with valid world IDs aren't rejected.
The `FakeWidget` thing is so `sip.isdeleted` didn't complain about being
passed the wrong type.
If the blacklist is only valid for the completion, the setting should also be
under completion.
This also un-renames history.gap_interval and renames
completion.web_history_max_items.
This adds a new CompletionMetaInfo table which is a simple key/value store.
Thanks to Python/sqlite duck typing, we can use that to store values of any
type, even new ones in the future.
Currently, the only allowed key is force_rebuild, which forces a rebuild of the
CompletionHistory table. This will be needed for a future change.
In ffc29ee043 (part of v1.0.0), a
qute://settings/set URL was added to change settings.
Contrary to what I apparently believed at the time, it *is* possible for
websites to access `qute://*` URLs (i.e., neither QtWebKit nor QtWebEngine
prohibit such requests, other than the usual cross-origin rules).
In other words, this means a website can e.g. have an `<img>` tag which loads a
`qute://settings/set` URL, which then sets `editor.command` to a bash script.
The result of that is arbitrary code execution.
Fixes#4060
See #2332
This reverts commit 1956590df84a72c7f9a516e805d01529291fccf8.
Turns out the actual issue wasn't due to *invalid* links - it's with links
which have an unknown scheme.
There's still a change in behavior between Qt 5.10 and 5.11 though: Invalid
links are apparently not passed to acceptNavigationRequest (sometimes?) so we
don't show an error message. Instead, we just load about:blank. However,
Chromium does that too and we can't handle a real click easily, so let's just
ignore that one.
See #3661
