nostr-rs-relay/src/utils.rs
Greg Heartsfield 035cf34673
fix(NIP-12): correctly search for mixed-case hex-like tags
Only lowercase and even-length tag values are stored as binary BLOBs.
Previously there was an error which search results from being returned
if the tag value was mixed-case and could be interpreted as hex.

A new database migration has been created to repair the `tag` table
for existing relays.

fixes: https://todo.sr.ht/~gheartsfield/nostr-rs-relay/37
2022-08-17 16:34:11 -07:00

34 lines
768 B
Rust

//! Common utility functions
use std::time::SystemTime;
/// Seconds since 1970.
pub fn unix_time() -> u64 {
SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH)
.map(|x| x.as_secs())
.unwrap_or(0)
}
/// Check if a string contains only hex characters.
pub fn is_hex(s: &str) -> bool {
s.chars().all(|x| char::is_ascii_hexdigit(&x))
}
/// Check if a string contains only lower-case hex chars.
pub fn is_lower_hex(s: &str) -> bool {
s.chars().all(|x| {
(char::is_ascii_lowercase(&x) || char::is_ascii_digit(&x)) && char::is_ascii_hexdigit(&x)
})
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn lower_hex() {
let hexstr = "abcd0123";
assert_eq!(is_lower_hex(hexstr), true);
}
}