54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
use chrono::{Duration, Utc};
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use md5::{Digest, Md5};
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use uuid::Uuid;
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use super::error::AuthError;
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use super::data::{AccountKind, MinecraftAccount};
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use crate::error::AuthResult;
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pub fn offline_uuid(username: &str) -> Uuid {
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let mut hasher = Md5::new();
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hasher.update(format!("OfflinePlayer:{username}").as_bytes());
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let digest = hasher.finalize();
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let mut bytes = [0u8; 16];
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bytes.copy_from_slice(&digest);
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bytes[6] = (bytes[6] & 0x0f) | 0x30;
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bytes[8] = (bytes[8] & 0x3f) | 0x80;
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Uuid::from_bytes(bytes)
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}
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pub fn validate_offline_username(username: &str) -> AuthResult<()> {
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let len = username.chars().count();
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if !(3..=16).contains(&len) {
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return Err(AuthError::InvalidOfflineUsername {
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reason: "username must be 3-16 characters".into(),
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}
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);
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}
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if !username
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.chars()
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.all(|c| c.is_ascii_alphanumeric() || c == '_')
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{
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return Err(AuthError::InvalidOfflineUsername {
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reason: "username may only contain letters, digits, and underscores".into(),
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}
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);
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}
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Ok(())
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}
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#[tracing::instrument(level = "debug", fields(username = %username))]
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pub fn offline_account(username: String) -> MinecraftAccount {
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tracing::info!("creating offline account");
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MinecraftAccount {
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id: offline_uuid(&username),
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username,
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access_token: String::new(),
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refresh_token: String::new(),
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expires: Utc::now() + Duration::days(3650),
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kind: AccountKind::Offline,
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}
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}
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