Remove RFC 2047 encoding from Content-Disposition filename#36328
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tobifasc wants to merge 1 commit intospring-projects:mainfrom
Open
Remove RFC 2047 encoding from Content-Disposition filename#36328tobifasc wants to merge 1 commit intospring-projects:mainfrom
tobifasc wants to merge 1 commit intospring-projects:mainfrom
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Updates the Content-Disposition header creation logic to use only ISO-8859-1 characters for the fallback 'filename' parameter instead of RFC 2047 encoded strings. Non-compatible characters are replaced with '?'. This does not remove the ability to parse RFC 2047 encoded filenames. Signed-off-by: Tobias Fasching <tobias.fasching@outlook.com>
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Appendix C.1 of RFC 2066 and Section 5 of RFC 2047 describe that an "encoded-word" (as described in RFC 2047) must not be used as parameter of a Content-Disposition header.
The current implementation in
ContentDispositiondoes however encode the fallbackfilenameparameter using the mechanism described in RFC 2047 (given that the charset is set to something other thanUS_ASCII).Related discussion: #29861
This PR updates the Content-Disposition header creation logic to use only ISO-8859-1 characters for the fallback
filenameparameter instead. Non-compatible characters are replaced with?. The "full" filename is still present in thefilename*parameter.This does not remove the ability to parse RFC 2047 encoded headers.