The default code is 307 (temporary) to make it easier to test different icon
services, but once a service has been decided on, users should ideally switch
to using permanent redirects for cacheability.
Browsers are rather smart, but also dumb. This uses the `Expires` header
alongside `cache-control` to better prompt the browser to actually
cache.
Unfortunately, firefox still tries to "race" its own cache, in an
attempt to respond to requests faster, so still ends up making a bunch
of requests which could have been cached. Doesn't appear there's any way
around this.
If an external icon service is configured, icon requests return an HTTP
redirect to the corresponding icon at the external service.
An external service may be useful for various reasons, such as if:
* The Vaultwarden instance has no external network connectivity.
* The Vaultwarden instance has trouble handling large bursts of icon requests.
* There are concerns that an attacker may probe the instance to try to detect
whether icons for certain sites have been cached, which would suggest that
the instance contains entries for those sites.
* The external icon service does a better job of providing icons than the
built-in fetcher.
- Unicode websites could break (www.post.japanpost.jp for example).
regex would fail because it was missing the unicode-perl feature.
- Be less verbose in logging with icon downloads
- Removed duplicate info/error messages
- Added err_silent! macro to help with the less verbose error/info messages.
- Updated some crates
- Updated icon fetching code:
+ Use a cookie jar and set Max-Age to 2 minutes for all cookies
+ Locate the base href tag to fix some locations
+ Changed User-Agent (Helps on some sites to get HTML instead of JS)
+ Reduced HTML code limit from 512KB to 384KB
+ Allow some large icons higer-up in the sort
+ Allow GIF images
+ Ignore cookie_store and hyper::client debug messages
- Updated branding for admin and emails
- Updated crates and some deprications
- Removed newline-converter because this is built-in into lettre
- Updated email templates to use a shared header and footer template
- Also trigger SMTP SSL When TLS is selected without SSL
Resolves #1641
- Added image type checking, and prevent downloading non images.
We didn't checked this before, which could in turn could allow someone
to download an arbitrary file.
- This also prevents SVG images from being used, while they work on the
web-vault and desktop client, they didn't on the mobile versions.
- Because of this image type checking we can return a valid file type
instead of only 'x-icon' (which is still used as a fallback).
- Prevent rel values with `icon-mask`, these are not valid favicons.
- We need to add some feature to enable smtp debugging again. See: https://github.com/lettre/lettre/pull/584
- Upstream added the fallback icon again, probably because of caching ;). See: https://github.com/bitwarden/server/pull/1149
- Enabled gzip and brotli compression support with reqwest. Some sites seem to force this, or assume that because of the User-Agent string it is supported. This caused some failed icons.
Fixes #1540
- Changed the user-agent, which caused at least one site to stall the
connection (Same happens on icons.bitwarden.com)
- Added default_header creation to the lazy static CLIENT
- Added referer passing, which is checked by some sites
- Some small other changes
- Added more checks to prevent panics (Removed unwrap)
- Try do download from base domain or add www when the provided domain
fails
- Added some more domain validation checks to prevent errors
- Added the ICON_BLACKLIST_REGEX to a Lazy Static HashMap which
speeds-up the checks!
- Validate the Regex before starting/config change.
- Some cleanups
- Disabled some noisy debugging from 2 crates.
Some sites are using base64 encoded inline images for favicons.
This will try to match those with some sane checks and return that.
These icons will have lower prio then the icons with a normal URL.
Now creates icon cache directory at startup.
And it also creates the directory if it went missing during runtime.
Also modified the icon_save/mark_negcache to be one.
When the icon_cache directory doesn't exists yet, and the first icon
catched is a miss this .miss file was not able to be created since the
directory was only created during a valid icon download.
