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Linus Rath
4d3a3db90b
From 0.16.6 Stalwart refuses FileNode names with `/<>:"\|?*` or a
reserved name such as `CON` ("Name contains a forbidden character."),
and publishes the rules as `forbiddenNameChars` / `forbiddenNodeNames`.
Bulwark did not read them: the error showed up only after an upload had
started, and it aborted the rest of a multi-file or folder upload.
- new folder, new text file and rename now say which characters or
names the server does not allow, before sending anything
- uploads store an accepted variant instead: forbidden characters
become `_` and a reserved name gets `_` appended
MIME types over 30 characters (most Office formats) were always stored
as `application/octet-stream`, because Stalwart before 0.16.6 refuses
them. From 0.16.6 the limit is 255, so the real type is kept there.