clauth 0.1.2

A simple Claude Code account switcher - swap OAuth and API profiles in a second
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

use std::env;
use std::fs;
use std::io::{Read, Write};
use std::time::Duration;

use serde_json::Value;

const API_URL: &str = "https://api.github.com/repos/uwuclxdy/clauth/releases/latest";
const CURRENT_VERSION: &str = env!("CARGO_PKG_VERSION");

/// Spawns a background thread that silently checks for and applies an update.
/// Returns immediately. All errors are discarded — update is best-effort.
pub fn spawn() {
    if is_cargo_installed() {
        return;
    }
    std::thread::spawn(|| {
        let _ = try_update();
    });
}

fn try_update() -> anyhow::Result<()> {
    let Some(asset) = asset_name() else {
        return Ok(());
    };

    let api_agent: ureq::Agent = ureq::Agent::config_builder()
        .timeout_connect(Some(Duration::from_secs(5)))
        .timeout_recv_response(Some(Duration::from_secs(10)))
        .build()
        .into();

    let text = api_agent
        .get(API_URL)
        .header("User-Agent", "clauth-updater")
        .call()
        .map_err(|e| anyhow::anyhow!("{e}"))?
        .body_mut()
        .read_to_string()
        .map_err(|e| anyhow::anyhow!("{e}"))?;

    let release: Value = serde_json::from_str(&text)?;

    let Some(tag) = release["tag_name"].as_str() else {
        return Ok(());
    };

    if !is_newer(tag, CURRENT_VERSION) {
        return Ok(());
    }

    let Some(url) = asset_url(&release, asset) else {
        return Ok(());
    };

    download_and_replace(&url)
}

fn asset_url(release: &Value, name: &str) -> Option<String> {
    release["assets"]
        .as_array()?
        .iter()
        .find(|a| a["name"].as_str() == Some(name))?["browser_download_url"]
        .as_str()
        .map(str::to_owned)
}

fn download_and_replace(url: &str) -> anyhow::Result<()> {
    let tmp_path = env::temp_dir().join("clauth_update.tmp");

    // Remove any leftover partial file from a previous interrupted attempt.
    let _ = fs::remove_file(&tmp_path);

    // into_reader() has no size cap, unlike read_to_vec()'s 10 MB default.
    let mut bytes = Vec::new();
    ureq::get(url)
        .header("User-Agent", "clauth-updater")
        .call()
        .map_err(|e| anyhow::anyhow!("{e}"))?
        .into_body()
        .into_reader()
        .read_to_end(&mut bytes)?;

    {
        let mut f = fs::File::create(&tmp_path)?;
        f.write_all(&bytes)?;
        f.sync_all()?;
    }

    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        fs::set_permissions(&tmp_path, fs::Permissions::from_mode(0o755))?;
    }

    // self_replace handles in-place replacement on all platforms, including
    // Windows where you cannot directly overwrite a running executable.
    self_replace::self_replace(&tmp_path)?;
    let _ = fs::remove_file(&tmp_path);

    Ok(())
}

fn is_cargo_installed() -> bool {
    let Ok(exe) = env::current_exe() else {
        return false;
    };
    let cargo_bin = dirs::home_dir()
        .map(|h| h.join(".cargo").join("bin"))
        .unwrap_or_default();
    exe.starts_with(cargo_bin)
}

fn asset_name() -> Option<&'static str> {
    if cfg!(all(target_os = "linux", target_arch = "x86_64")) {
        Some("clauth-linux-x86_64")
    } else if cfg!(all(target_os = "macos", target_arch = "x86_64")) {
        Some("clauth-macos-x86_64")
    } else if cfg!(all(target_os = "macos", target_arch = "aarch64")) {
        Some("clauth-macos-aarch64")
    } else if cfg!(all(target_os = "windows", target_arch = "x86_64")) {
        Some("clauth-windows-x86_64.exe")
    } else {
        None
    }
}

fn parse_version(v: &str) -> Option<(u32, u32, u32)> {
    let v = v.trim_start_matches('v');
    let mut it = v.splitn(3, '.');
    Some((
        it.next()?.parse().ok()?,
        it.next()?.parse().ok()?,
        it.next()?.parse().ok()?,
    ))
}

fn is_newer(tag: &str, current: &str) -> bool {
    match (parse_version(tag), parse_version(current)) {
        (Some(latest), Some(cur)) => latest > cur,
        _ => false,
    }
}