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-rw-r--r--src/mail/unique_ident.rs101
1 files changed, 0 insertions, 101 deletions
diff --git a/src/mail/unique_ident.rs b/src/mail/unique_ident.rs
deleted file mode 100644
index 0e629db..0000000
--- a/src/mail/unique_ident.rs
+++ /dev/null
@@ -1,101 +0,0 @@
-use std::str::FromStr;
-use std::sync::atomic::{AtomicU64, Ordering};
-
-use lazy_static::lazy_static;
-use rand::prelude::*;
-use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
-
-use crate::timestamp::now_msec;
-
-/// An internal Mail Identifier is composed of two components:
-/// - a process identifier, 128 bits, itself composed of:
-/// - the timestamp of when the process started, 64 bits
-/// - a 64-bit random number
-/// - a sequence number, 64 bits
-/// They are not part of the protocol but an internal representation
-/// required by Aerogramme.
-/// Their main property is to be unique without having to rely
-/// on synchronization between IMAP processes.
-#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Hash)]
-pub struct UniqueIdent(pub [u8; 24]);
-
-struct IdentGenerator {
- pid: u128,
- sn: AtomicU64,
-}
-
-impl IdentGenerator {
- fn new() -> Self {
- let time = now_msec() as u128;
- let rand = thread_rng().gen::<u64>() as u128;
- Self {
- pid: (time << 64) | rand,
- sn: AtomicU64::new(0),
- }
- }
-
- fn gen(&self) -> UniqueIdent {
- let sn = self.sn.fetch_add(1, Ordering::Relaxed);
- let mut res = [0u8; 24];
- res[0..16].copy_from_slice(&u128::to_be_bytes(self.pid));
- res[16..24].copy_from_slice(&u64::to_be_bytes(sn));
- UniqueIdent(res)
- }
-}
-
-lazy_static! {
- static ref GENERATOR: IdentGenerator = IdentGenerator::new();
-}
-
-pub fn gen_ident() -> UniqueIdent {
- GENERATOR.gen()
-}
-
-// -- serde --
-
-impl<'de> Deserialize<'de> for UniqueIdent {
- fn deserialize<D>(d: D) -> Result<Self, D::Error>
- where
- D: Deserializer<'de>,
- {
- let v = String::deserialize(d)?;
- UniqueIdent::from_str(&v).map_err(D::Error::custom)
- }
-}
-
-impl Serialize for UniqueIdent {
- fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
- where
- S: Serializer,
- {
- serializer.serialize_str(&self.to_string())
- }
-}
-
-impl std::fmt::Display for UniqueIdent {
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- write!(f, "{}", hex::encode(self.0))
- }
-}
-
-impl std::fmt::Debug for UniqueIdent {
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- write!(f, "{}", hex::encode(self.0))
- }
-}
-
-impl FromStr for UniqueIdent {
- type Err = &'static str;
-
- fn from_str(s: &str) -> Result<UniqueIdent, &'static str> {
- let bytes = hex::decode(s).map_err(|_| "invalid hex")?;
-
- if bytes.len() != 24 {
- return Err("bad length");
- }
-
- let mut tmp = [0u8; 24];
- tmp[..].copy_from_slice(&bytes);
- Ok(UniqueIdent(tmp))
- }
-}