Unlucky Launcher v0.0.1-alpha
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Rust 原生单文件 Minecraft 启动器:CLI 完整可用(install/launch/accounts/java/diagnose/agent),
MCP server 接入外部 Agent 工具,GUI 开发中。
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AskaEth committed 2026-10-31 21:54:10 +08:00
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//! device-code 流:发起(拿 `user_code` + `verification_uri`)→ 轮询换 token →(刷新同构)。
//!
//! 逐条承 `analyse/04` §4.3 / §4.4 / §4.5:
//! - **硬超时**:只等 `min(expires_in, 900s)`,防止后台任务永久挂起;
//! - **`slow_down` 是流程内状态**,不是失败:轮询间隔 +5 秒继续;
//! - **每次轮询前先 sleep**(别密集打服务端);
//! - **refresh 同时返回新 refresh_token**,调用方必须整体覆盖(轮换);
//! - 收紧 HMCL 的观察项 1:**只要 `error` 非空就失败**,不再「描述为空就静默放行」。
//!
//! 打印 `user_code`/URL 不在这里:core 不做 UI,宿主拿 [`DeviceCodePrompt`] 自己决定
//! (CLI 打到 stderr,GUI 弹对话框 + 二维码)。
use std::time::{Duration, Instant};
use reqwest::Client;
use crate::auth::error::{AuthError, AuthResult};
use crate::auth::secret::Secret;
use super::endpoints::MicrosoftEndpoints;
use crate::auth::http::{post_form, Reply};
/// 申请的 scope(`XboxLive.signin` + 长期刷新)。
pub const SCOPE: &str = "XboxLive.signin offline_access";
/// 设备码流程的硬上限:无论服务端给多长,最多等这么久。
pub const DEVICE_CODE_MAX_WAIT: Duration = Duration::from_secs(900);
/// 默认轮询间隔下限(服务端 `interval` 更小时按下限走)。
pub const DEFAULT_MIN_INTERVAL: Duration = Duration::from_secs(1);
/// `slow_down` 的退避步长(承 HMCL:+5 秒)。
pub const DEFAULT_SLOW_DOWN_STEP: Duration = Duration::from_secs(5);
/// device_code grant 类型。
pub const DEVICE_CODE_GRANT: &str = "urn:ietf:params:oauth:grant-type:device_code";
/// 轮询策略(生产用 [`PollPolicy::default`],测试用小间隔跑同一套状态机)。
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct PollPolicy {
/// 轮询间隔下限。
pub min_interval: Duration,
/// `slow_down` 的退避步长。
pub slow_down_step: Duration,
/// 整个流程最多等多久(还会与 `expires_in` 取小)。
pub max_wait: Duration,
}
impl Default for PollPolicy {
fn default() -> Self {
Self {
min_interval: DEFAULT_MIN_INTERVAL,
slow_down_step: DEFAULT_SLOW_DOWN_STEP,
max_wait: DEVICE_CODE_MAX_WAIT,
}
}
}
/// 要展示给用户的信息(URL + 用户码)。
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct DeviceCodePrompt {
/// 用户在验证页输入的短码(如 `ABCD1234`)。**不是凭据**,可打印。
pub user_code: String,
/// 验证地址(`https://www.microsoft.com/link` 等)。
pub verification_uri: String,
/// 服务端给的有效期。
pub expires_in: Duration,
/// 服务端建议的轮询间隔。
pub interval: Duration,
}
impl DeviceCodePrompt {
/// 人读两行(CLI 打到 stderr,GUI 直接展示)。
#[must_use]
pub fn lines(&self) -> (String, String) {
(
format!("请在任意设备打开 {} 并输入代码:", self.verification_uri),
format!(
"用户码 {}({} 分钟内有效)",
self.user_code,
self.expires_in.as_secs() / 60
),
)
}
}
/// 设备码申请的中间态(`device_code` 是凭据形状,不进日志)。
#[derive(Debug, Clone)]
pub(crate) struct DeviceCodeGrant {
/// 展示信息。
pub prompt: DeviceCodePrompt,
/// 轮询用的长码(脱敏 Debug,永不打印)。
pub device_code: Secret,
}
/// OAuth 换到的 token 对。
#[derive(Debug, Clone)]
pub(crate) struct OAuthTokens {
/// Live access token(只在链内用,不落盘)。
pub access_token: Secret,
/// Live refresh token(落盘、轮换)。
pub refresh_token: Secret,
}
/// 申请设备码。
pub(crate) async fn request_device_code(
client: &Client,
endpoints: &MicrosoftEndpoints,
client_id: &str,
) -> AuthResult<DeviceCodeGrant> {
let reply = post_form(
client,
&endpoints.device_code,
vec![
("client_id", client_id.to_string()),
("scope", SCOPE.to_string()),
],
)
.await?;
if !reply.is_success() {
return Err(oauth_error(&reply, &endpoints.device_code));
}
let user_code = reply
.text("user_code")
.ok_or_else(|| AuthError::Malformed("设备码响应缺 user_code".to_string()))?;
let device_code = reply
.text("device_code")
.ok_or_else(|| AuthError::Malformed("设备码响应缺 device_code".to_string()))?;
let verification_uri = reply
.text("verification_uri")
.or_else(|| reply.text("verification_url"))
.ok_or_else(|| AuthError::Malformed("设备码响应缺 verification_uri".to_string()))?;
let expires_in = reply.number("expires_in").unwrap_or(900).max(1);
// 服务端间隔原样收下,下限交给 [`PollPolicy::min_interval`](生产 1 秒,测试可压到毫秒)。
let interval = reply.number("interval").unwrap_or(5);
Ok(DeviceCodeGrant {
prompt: DeviceCodePrompt {
user_code: user_code.to_string(),
verification_uri: verification_uri.to_string(),
expires_in: Duration::from_secs(expires_in),
interval: Duration::from_secs(interval),
},
device_code: Secret::new(device_code),
})
}
/// 轮询直到用户完成授权(或超时/被拒/取消)。
pub(crate) async fn poll_device_token(
client: &Client,
endpoints: &MicrosoftEndpoints,
client_id: &str,
grant: &DeviceCodeGrant,
policy: PollPolicy,
) -> AuthResult<OAuthTokens> {
let limit = grant.prompt.expires_in.min(policy.max_wait);
let mut interval = grant.prompt.interval.max(policy.min_interval);
let started = Instant::now();
loop {
if started.elapsed() >= limit {
return Err(AuthError::Timeout {
what: format!("等待设备码授权(上限 {} 秒)", limit.as_secs()),
});
}
tokio::time::sleep(interval).await;
let reply = post_form(
client,
&endpoints.token,
vec![
("client_id", client_id.to_string()),
("grant_type", DEVICE_CODE_GRANT.to_string()),
("code", grant.device_code.expose().to_string()),
],
)
.await?;
if let Some(error) = reply.text("error") {
match error {
"authorization_pending" => continue,
// 服务端压力反馈:不是失败,退避后继续(承 HMCL)。
"slow_down" => {
interval += policy.slow_down_step;
continue;
}
"expired_token" => {
return Err(AuthError::Timeout {
what: "设备码已过期(需重新发起登录)".to_string(),
})
}
"access_denied" | "authorization_declined" => return Err(AuthError::Canceled),
_ => return Err(oauth_error(&reply, &endpoints.token)),
}
}
return tokens_from(&reply, &endpoints.token);
}
}
/// 用 refresh_token 换新的 token 对(**刷新也会返回新 refresh_token**)。
pub(crate) async fn refresh_tokens(
client: &Client,
endpoints: &MicrosoftEndpoints,
client_id: &str,
refresh_token: &Secret,
) -> AuthResult<OAuthTokens> {
let reply = post_form(
client,
&endpoints.token,
vec![
("client_id", client_id.to_string()),
("grant_type", "refresh_token".to_string()),
("refresh_token", refresh_token.expose().to_string()),
],
)
.await?;
if let Some(error) = reply.text("error") {
// `invalid_grant` + `AADSTS70000` = 授权被撤销/过期 → 唯一该重新登录的信号。
if error == "invalid_grant" {
let description = reply.text("error_description").unwrap_or("");
if description.contains("AADSTS70000") {
return Err(AuthError::CredentialExpired);
}
}
return Err(oauth_error(&reply, &endpoints.token));
}
if !reply.is_success() {
return Err(oauth_error(&reply, &endpoints.token));
}
tokens_from(&reply, &endpoints.token)
}
fn tokens_from(reply: &Reply, url: &str) -> AuthResult<OAuthTokens> {
let access_token = reply
.text("access_token")
.ok_or_else(|| AuthError::Malformed(format!("{url} 响应缺 access_token")))?;
let refresh_token = reply
.text("refresh_token")
.ok_or_else(|| AuthError::Malformed(format!("{url} 响应缺 refresh_token")))?;
Ok(OAuthTokens {
access_token: Secret::new(access_token),
refresh_token: Secret::new(refresh_token),
})
}
/// OAuth 错误归一:**`error` 非空即失败**(HMCL 只在两个字段都非空时处理,我们收紧)。
fn oauth_error(reply: &Reply, url: &str) -> AuthError {
let Some(code) = reply.text("error") else {
return AuthError::network(
url.split('?').next().unwrap_or(url),
format!("HTTP {}(响应不是 OAuth 错误体)", reply.status),
);
};
let description = reply
.text("error_description")
.unwrap_or("服务端未给描述")
.to_string();
if code == "invalid_grant" && description.contains("AADSTS70000") {
return AuthError::CredentialExpired;
}
AuthError::Denied {
code: code.to_string(),
description,
}
}
#[cfg(test)]
mod tests {
use super::{oauth_error, PollPolicy, DEFAULT_MIN_INTERVAL, DEVICE_CODE_MAX_WAIT};
use crate::auth::error::AuthError;
use crate::auth::http::Reply;
use serde_json::json;
#[test]
fn default_policy_matches_hmcl_bounds() {
let policy = PollPolicy::default();
assert_eq!(policy.min_interval, DEFAULT_MIN_INTERVAL);
assert_eq!(policy.max_wait, DEVICE_CODE_MAX_WAIT);
assert_eq!(policy.max_wait.as_secs(), 900);
}
#[test]
fn error_without_description_still_fails() {
let reply = reply(400, Some(json!({ "error": "invalid_request" })));
match oauth_error(&reply, "https://example.invalid/token") {
AuthError::Denied { code, .. } => assert_eq!(code, "invalid_request"),
other => panic!("应是 Denied,实际 {other:?}"),
}
}
#[test]
fn aadsts70000_becomes_credential_expired() {
let reply = reply(
400,
Some(json!({
"error": "invalid_grant",
"error_description": "AADSTS70000: The grant is expired or revoked"
})),
);
assert!(oauth_error(&reply, "https://example.invalid/token").is_credential_expired());
}
#[test]
fn non_oauth_body_is_network_error() {
let reply = reply(500, None);
assert_eq!(
oauth_error(&reply, "https://example.invalid/token").code(),
"network"
);
}
fn reply(status: u16, body: Option<serde_json::Value>) -> Reply {
Reply {
status,
body,
content_type: Some("application/json".to_string()),
raw: None,
}
}
}