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Replace lazy_static with OnceLock inside monero-serai

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lazy_static, if no_std environments were used, effectively required always
using spin locks. This resolves the ergonomics of that while adopting Rust std
code.

no_std does still use a spin based solution. Theoretically, we could use
atomics, yet writing our own Mutex wasn't a priority.
This commit is contained in:
Luke Parker
2023-06-28 21:16:33 -04:00
parent 8ced63eaac
commit d25c668ee4
17 changed files with 212 additions and 129 deletions
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48
coins/monero/src/wallet/seed/classic.rs
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@@ -1,7 +1,5 @@
use core::ops::Deref;
use std::collections::HashMap;
use lazy_static::lazy_static;
use std_shims::{sync::OnceLock, collections::HashMap};
use zeroize::{Zeroize, Zeroizing};
use rand_core::{RngCore, CryptoRng};
@@ -47,28 +45,32 @@ impl WordList {
}
}
lazy_static! {
static ref LANGUAGES: HashMap<Language, WordList> = HashMap::from([
(Language::Chinese, WordList::new(include!("./classic/zh.rs"), 1)),
(Language::English, WordList::new(include!("./classic/en.rs"), 3)),
(Language::Dutch, WordList::new(include!("./classic/nl.rs"), 4)),
(Language::French, WordList::new(include!("./classic/fr.rs"), 4)),
(Language::Spanish, WordList::new(include!("./classic/es.rs"), 4)),
(Language::German, WordList::new(include!("./classic/de.rs"), 4)),
(Language::Italian, WordList::new(include!("./classic/it.rs"), 4)),
(Language::Portuguese, WordList::new(include!("./classic/pt.rs"), 4)),
(Language::Japanese, WordList::new(include!("./classic/ja.rs"), 3)),
(Language::Russian, WordList::new(include!("./classic/ru.rs"), 4)),
(Language::Esperanto, WordList::new(include!("./classic/eo.rs"), 4)),
(Language::Lojban, WordList::new(include!("./classic/jbo.rs"), 4)),
(Language::EnglishOld, WordList::new(include!("./classic/ang.rs"), 4)),
]);
static LANGUAGES_CELL: OnceLock<HashMap<Language, WordList>> = OnceLock::new();
#[allow(non_snake_case)]
fn LANGUAGES() -> &'static HashMap<Language, WordList> {
LANGUAGES_CELL.get_or_init(|| {
HashMap::from([
(Language::Chinese, WordList::new(include!("./classic/zh.rs"), 1)),
(Language::English, WordList::new(include!("./classic/en.rs"), 3)),
(Language::Dutch, WordList::new(include!("./classic/nl.rs"), 4)),
(Language::French, WordList::new(include!("./classic/fr.rs"), 4)),
(Language::Spanish, WordList::new(include!("./classic/es.rs"), 4)),
(Language::German, WordList::new(include!("./classic/de.rs"), 4)),
(Language::Italian, WordList::new(include!("./classic/it.rs"), 4)),
(Language::Portuguese, WordList::new(include!("./classic/pt.rs"), 4)),
(Language::Japanese, WordList::new(include!("./classic/ja.rs"), 3)),
(Language::Russian, WordList::new(include!("./classic/ru.rs"), 4)),
(Language::Esperanto, WordList::new(include!("./classic/eo.rs"), 4)),
(Language::Lojban, WordList::new(include!("./classic/jbo.rs"), 4)),
(Language::EnglishOld, WordList::new(include!("./classic/ang.rs"), 4)),
])
})
}
#[cfg(test)]
pub(crate) fn trim_by_lang(word: &str, lang: Language) -> String {
if lang != Language::EnglishOld {
word.chars().take(LANGUAGES[&lang].unique_prefix_length).collect()
word.chars().take(LANGUAGES()[&lang].unique_prefix_length).collect()
} else {
word.to_string()
}
@@ -92,7 +94,7 @@ fn key_to_seed(lang: Language, key: Zeroizing<Scalar>) -> ClassicSeed {
let bytes = Zeroizing::new(key.to_bytes());
// get the language words
let words = &LANGUAGES[&lang].word_list;
let words = &LANGUAGES()[&lang].word_list;
let list_len = u64::try_from(words.len()).unwrap();
// To store the found words & add the checksum word later.
@@ -126,7 +128,7 @@ fn key_to_seed(lang: Language, key: Zeroizing<Scalar>) -> ClassicSeed {
// create a checksum word for all languages except old english
if lang != Language::EnglishOld {
let checksum = seed[checksum_index(&seed, &LANGUAGES[&lang])].clone();
let checksum = seed[checksum_index(&seed, &LANGUAGES()[&lang])].clone();
seed.push(checksum);
}
@@ -154,7 +156,7 @@ pub(crate) fn seed_to_bytes(words: &str) -> Result<(Language, Zeroizing<[u8; 32]
let mut matched_indices = Zeroizing::new(vec![]);
// Iterate through all the languages
'language: for (lang_name, lang) in LANGUAGES.iter() {
'language: for (lang_name, lang) in LANGUAGES().iter() {
matched_indices.zeroize();
matched_indices.clear();