121 lines
3.6 KiB
Rust
121 lines
3.6 KiB
Rust
use argon2::{Config, Variant};
|
|
use cmp::Ordering;
|
|
use rand::prelude::*;
|
|
use ruma::serde::{try_from_json_map, CanonicalJsonError, CanonicalJsonObject};
|
|
use std::{
|
|
cmp,
|
|
convert::TryInto,
|
|
time::{SystemTime, UNIX_EPOCH},
|
|
};
|
|
|
|
pub fn millis_since_unix_epoch() -> u64 {
|
|
SystemTime::now()
|
|
.duration_since(UNIX_EPOCH)
|
|
.expect("time is valid")
|
|
.as_millis() as u64
|
|
}
|
|
|
|
#[cfg(feature = "rocksdb")]
|
|
pub fn increment_rocksdb(
|
|
_new_key: &[u8],
|
|
old: Option<&[u8]>,
|
|
_operands: &mut rocksdb::MergeOperands,
|
|
) -> Option<Vec<u8>> {
|
|
increment(old)
|
|
}
|
|
|
|
pub fn increment(old: Option<&[u8]>) -> Option<Vec<u8>> {
|
|
let number = match old.map(|bytes| bytes.try_into()) {
|
|
Some(Ok(bytes)) => {
|
|
let number = u64::from_be_bytes(bytes);
|
|
number + 1
|
|
}
|
|
_ => 1, // Start at one. since 0 should return the first event in the db
|
|
};
|
|
|
|
Some(number.to_be_bytes().to_vec())
|
|
}
|
|
|
|
pub fn generate_keypair() -> Vec<u8> {
|
|
let mut value = random_string(8).as_bytes().to_vec();
|
|
value.push(0xff);
|
|
value.extend_from_slice(
|
|
&ruma::signatures::Ed25519KeyPair::generate()
|
|
.expect("Ed25519KeyPair generation always works (?)"),
|
|
);
|
|
value
|
|
}
|
|
|
|
/// Parses the bytes into an u64.
|
|
pub fn u64_from_bytes(bytes: &[u8]) -> Result<u64, std::array::TryFromSliceError> {
|
|
let array: [u8; 8] = bytes.try_into()?;
|
|
Ok(u64::from_be_bytes(array))
|
|
}
|
|
|
|
/// Parses the bytes into a string.
|
|
pub fn string_from_bytes(bytes: &[u8]) -> Result<String, std::string::FromUtf8Error> {
|
|
String::from_utf8(bytes.to_vec())
|
|
}
|
|
|
|
pub fn random_string(length: usize) -> String {
|
|
thread_rng()
|
|
.sample_iter(&rand::distributions::Alphanumeric)
|
|
.take(length)
|
|
.map(char::from)
|
|
.collect()
|
|
}
|
|
|
|
/// Calculate a new hash for the given password
|
|
pub fn calculate_hash(password: &str) -> Result<String, argon2::Error> {
|
|
let hashing_config = Config {
|
|
variant: Variant::Argon2id,
|
|
..Default::default()
|
|
};
|
|
|
|
let salt = random_string(32);
|
|
argon2::hash_encoded(password.as_bytes(), salt.as_bytes(), &hashing_config)
|
|
}
|
|
|
|
pub fn common_elements(
|
|
mut iterators: impl Iterator<Item = impl Iterator<Item = Vec<u8>>>,
|
|
check_order: impl Fn(&[u8], &[u8]) -> Ordering,
|
|
) -> Option<impl Iterator<Item = Vec<u8>>> {
|
|
let first_iterator = iterators.next()?;
|
|
let mut other_iterators = iterators.map(|i| i.peekable()).collect::<Vec<_>>();
|
|
|
|
Some(first_iterator.filter(move |target| {
|
|
other_iterators
|
|
.iter_mut()
|
|
.map(|it| {
|
|
while let Some(element) = it.peek() {
|
|
match check_order(element, target) {
|
|
Ordering::Greater => return false, // We went too far
|
|
Ordering::Equal => return true, // Element is in both iters
|
|
Ordering::Less => {
|
|
// Keep searching
|
|
it.next();
|
|
}
|
|
}
|
|
}
|
|
false
|
|
})
|
|
.all(|b| b)
|
|
}))
|
|
}
|
|
|
|
/// Fallible conversion from any value that implements `Serialize` to a `CanonicalJsonObject`.
|
|
///
|
|
/// `value` must serialize to an `serde_json::Value::Object`.
|
|
pub fn to_canonical_object<T: serde::Serialize>(
|
|
value: T,
|
|
) -> Result<CanonicalJsonObject, CanonicalJsonError> {
|
|
use serde::ser::Error;
|
|
|
|
match serde_json::to_value(value).map_err(CanonicalJsonError::SerDe)? {
|
|
serde_json::Value::Object(map) => try_from_json_map(map),
|
|
_ => Err(CanonicalJsonError::SerDe(serde_json::Error::custom(
|
|
"Value must be an object",
|
|
))),
|
|
}
|
|
}
|