NIP-33 Bug on querying identifier tag (postgresql)

[mstoecklein]

I was querying a specific replaceable parametrized event that contains a #d tag with an identifier that contains an even amount of characters. This caused the hex code check to be completely ignored and assumed to be a hex code.

Here is the code that causes the error:

nostr-rs-relay/src/repo/postgres.rs

Line 889 in 4adad4c

if (v.len() % 2 != 0) && !is_lower_hex(v) {

This seems to fix it:

if v.len() % 2 == 0 && is_lower_hex(v) {
    tag_query.push_bind(hex::decode(v).ok());
} else {
    tag_query.push_bind(v.as_bytes());
}

I don't know much about Rust, which is why I didn't do a PR.

[v0l]

It should be fixed by #164

[mstoecklein]

I will test it during the week. Thank you.