This fixes direct and VPN-based retrieval of PDFs for Elsevier (e.g.,
ScienceDirect) items that have a DOI but no URL, since Elsevier resolves
DOIs through an intermediate page.
Delay requests to the same domain by 1 second, respect a Retry-After
header if present for 429 and 503, and delay for 10 seconds on 429 or
5xx otherwise.
If there's no translated PDF or the translated PDF fails and the item
has a DOI, check Zotero's Unpaywall mirror for possible sources and try
to download one of those.
Unlike with "Add Item by Identifier" and "Find Available PDF" in the
item context menu, this does not try the DOI/URL page, since it would
result in more data leakage and most of the time you'd be saving from
the DOI page already. We could consider offering it as an option, but
for it to be useful, you'd have to have an institutional subscription,
be on-campus or connected via VPN (for now), and be saving from
somewhere other than the main page.
A new connector endpoint, sessionProgress, takes the place of
attachmentProgress. Unlike attachmentProgress, sessionProgress can show
new attachments that have been added to the save, and with a little more
work should also be able to show when a parent item has been recognized
for a directly saved PDF.
This also adds support for custom PDF resolvers, available to all PDF
retrieval methods. I'll document those separately.
Closes#1542
- Add the ability to extract a PDF URL from a given webpage using the
translation framework
- Add the ability to get open-access PDFs from landing pages from
Unpaywall data in addition to direct PDF URLs
- Use the above functionality to improve PDF retrieval for "Add Item by
Identifier"
- Add "Find Available PDFs" option to the item context menu to retrieve
PDFs for existing items from the DOI or URL page or using Unpaywall
data. The option appears for single items with a DOI or URL and no PDF,
and it always appears when selecting multiple top-level items (but
skips ineligible items).
PDF extraction from DOI/URL pages will currently only work with
unauthenticated access (i.e., on-campus or VPN, but not via a web-based
proxy).
Supersedes and closes#948
- Make Zotero.Attachments.createDirectoryForItem() delete existing
directory instead of moving it to orphaned-files; also now returns a
string path instead of an nsIFile
- Use above function during file sync instead of
_deleteExistingAttachmentFiles(), which was partly broken
- Fix throwing on errors when saving some attachment types
WPD code hasn't been updated in many years, and there was an issue with
document permissions in 5.0. We'll need to replace nsIWBP in Electron,
but this will do for now.
Attachments are opened using file:// URIs instead of
zotero://attachment, which is what Standalone does anyway. Ancient HTML
annotations and highlights won't be displayed anymore, but I'm not sure
they worked anyway, and it hasn't been possible to create them in years.
We might be able to write out existing annotations to notes.
iframes are skipped during saving, in an attempt to reduce the number of
junk ad files. JS can still cause problems with viewing, so we might
still want to either disable scripts or force the viewed page offline
(if such a thing is possible).
There might be issues with auxiliary filename length/characters during
cross-platform file syncing. (We modified the WPD code to shorten/clean
them.)
- Fix upgrading of Mozilla-style attachments/storage file paths on upgrade
(requires re-upgrade)
- Save relative paths using forward slashes for consistency, and convert
to platform-appropriate slashes on use
These previously returned an itemID, but now that new saved items can be edited
without a refetch, they should just return the new item.
(Possible I missed a few spots where these are called.)
Change all attachment functions to take parameter objects, including a
'collections' property to assign collections. (Previously, calling code
assigned collections separately, which required a nested transaction,
which is no longer possible.)
Fixes#723, Can't attach files by dragging
