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identifiers: Fix MXC URI validation

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Tulir Asokan 2024-03-07 14:39:57 +02:00 committed by GitHub
parent 3997e445b5
commit b2c3df421d
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2 changed files with 11 additions and 2 deletions
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8
crates/ruma-identifiers-validation/CHANGELOG.md
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@ -1,5 +1,13 @@
# [unreleased] # [unreleased]
Bug fixes:
- Allow underscores (`_`) when validating MXC URIs.
- They have always been allowed in [the spec][mxc validation spec]
in order to support URL-safe base64-encoded media IDs.
[mxc validation spec]: https://spec.matrix.org/v1.9/client-server-api/#security-considerations-5
Improvements: Improvements:
- Point links to the Matrix 1.9 specification - Point links to the Matrix 1.9 specification

5
crates/ruma-identifiers-validation/src/mxc_uri.rs
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@ -18,8 +18,9 @@ pub fn validate(uri: &str) -> Result<NonZeroU8, MxcUriError> {
let server_name = &uri[..index]; let server_name = &uri[..index];
let media_id = &uri[index + 1..]; let media_id = &uri[index + 1..];
// See: https://spec.matrix.org/v1.9/client-server-api/#security-considerations-5 // See: https://spec.matrix.org/v1.9/client-server-api/#security-considerations-5
let media_id_is_valid = let media_id_is_valid = media_id
media_id.bytes().all(|b| matches!(b, b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' | b'-' )); .bytes()
.all(|b| matches!(b, b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' | b'-' | b'_' ));
if !media_id_is_valid { if !media_id_is_valid {
Err(MxcUriError::MediaIdMalformed) Err(MxcUriError::MediaIdMalformed)