Software / code / prosody
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util/bitcompat.lua @ 13854:0b01f40df0f9 13.0
mod_http_file_share: Add media-src 'self' to Content-Security-Policy header
This allows certain media files to be loaded when navigated to directly in a
web browser.
Note that in some browsers (Chrome), the media gets transformed
internally into a HTML page with some basic styles, but these are blocked due
to our default-src policy of 'none' Although this could be unblocked with
style-src unsafe-inline, it is not our plan to fix this, because this would
have negative security implications.
The reason for our CSP is to prevent the file share service from being used to
host malicious HTML/CSS/JS. Yes, CSS can be malicious.
Our file share service is for uploading and downloading files, it is not a
substitute for website/content hosting.
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 18 Apr 2025 12:25:06 +0100 |
| parent | 13624:de902cc0d46c |
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-- Compatibility layer for bitwise operations -- First try the bit32 lib -- Lua 5.3 has it with compat enabled -- Lua 5.2 has it by default if rawget(_G, "bit32") then return _G.bit32; end do -- Lua 5.3 and 5.4 would be able to use native infix operators local ok, bitop = pcall(require, "prosody.util.bit53") if ok then return bitop; end end error "No bit module found. See https://prosody.im/doc/depends#bitop";