OXYGENHUB
# e8fa53694f68 oxygenhub / crates / hub / src / config.rs
12.2 KiB · Rust · last changed feat: backups for users and organisations, to a directory, with restore (refs #169) 22 days ago source blame history raw
1 
//! Configuration (hub spec §17.1): `hub.toml` in the data directory, every
2 
//! key overridable by `OXYHUB_<SECTION>_<KEY>`.
3
4 
use serde::Deserialize;
5 
use std::net::SocketAddr;
6 
use std::path::{Path, PathBuf};
7
8 
#[derive(Clone, Debug, Deserialize)]
9 
#[serde(default, deny_unknown_fields)]
10 
pub struct Config {
11 
    /// Set from the command line, never from the file.
12 
    #[serde(skip)]
13 
    pub data: PathBuf,
14 
    pub site: Site,
15 
    pub server: Server,
16 
    pub tls: Tls,
17 
    pub auth: Auth,
18 
    pub registration: Registration,
19 
    pub email: Email,
20 
    pub limits: Limits,
21 
    pub retention: Retention,
22 
    pub flow: Flow,
23 
    pub apt: Apt,
24 
    pub diffusion: Diffusion,
25 
    pub backups: Backups,
26 
}
27
28 
/// Backups (docs/backups.md, oxygenhub#169): the directories on this host
29 
/// an owner may back up to. Empty, only GCS destinations can be chosen.
30 
#[derive(Clone, Debug, Default, Deserialize)]
31 
#[serde(default, deny_unknown_fields)]
32 
pub struct Backups {
33 
    pub directories: Vec<PathBuf>,
34 
}
35
36 
/// Diffusion (#148, docs/diffusion.md §4.2): the site's default for
37 
/// repositories that say nothing.
38 
#[derive(Clone, Debug, Deserialize)]
39 
#[serde(default, deny_unknown_fields)]
40 
pub struct Diffusion {
41 
    /// `off`, `green` or `any`.
42 
    pub follow: String,
43 
}
44
45 
impl Default for Diffusion {
46 
    fn default() -> Self {
47 
        Diffusion { follow: "off".into() }
48 
    }
49 
}
50
51 
/// The apt repository at `/apt` (oxygenhub#85): the `.deb` assets of these
52 
/// public repositories' releases, signed with the key in `gnupg_home`.
53 
#[derive(Clone, Debug, Deserialize)]
54 
#[serde(default, deny_unknown_fields)]
55 
pub struct Apt {
56 
    /// `owner/name` of each repository whose release `.deb`s are served;
57 
    /// none turns `/apt` off.
58 
    pub repos: Vec<String>,
59 
    /// The suite apt's `sources` names.
60 
    pub suite: String,
61 
    pub component: String,
62 
    /// GnuPG home holding the signing key (relative to the data directory).
63 
    pub gnupg_home: String,
64 
    /// Architectures the index lists, each with its Packages file.
65 
    pub architectures: Vec<String>,
66 
}
67
68 
impl Default for Apt {
69 
    fn default() -> Self {
70 
        Apt {
71 
            repos: vec![],
72 
            suite: "stable".into(),
73 
            component: "main".into(),
74 
            gnupg_home: "apt-gnupg".into(),
75 
            architectures: vec!["amd64".into(), "arm64".into(), "riscv64".into()],
76 
        }
77 
    }
78 
}
79
80 
/// OxygenFlow runs (hub spec §13.2).
81 
#[derive(Clone, Debug, Deserialize)]
82 
#[serde(default, deny_unknown_fields)]
83 
pub struct Flow {
84 
    /// Bearer tokens runners present to claim jobs.
85 
    pub runner_tokens: Vec<String>,
86 
    /// `owner/*` or `owner/name`: repositories whose pushes start runs.
87 
    pub repos: Vec<String>,
88 
    pub job_timeout_minutes: u64,
89 
}
90
91 
impl Default for Flow {
92 
    fn default() -> Self {
93 
        Flow { runner_tokens: vec![], repos: vec![], job_timeout_minutes: 60 }
94 
    }
95 
}
96
97 
impl Flow {
98 
    /// Whether pushes to `owner/name` start runs.
99 
    pub fn allows(&self, owner: &str, name: &str) -> bool {
100 
        self.repos.iter().any(|p| match p.split_once('/') {
101 
            Some((o, "*")) => o == owner,
102 
            Some((o, n)) => o == owner && n == name,
103 
            None => false,
104 
        })
105 
    }
106 
}
107
108 
#[derive(Clone, Debug, Default, Deserialize)]
109 
#[serde(default, deny_unknown_fields)]
110 
pub struct Email {
111 
    /// `smtp://user:pass@host:port` or `smtps://…`; empty disables email.
112 
    pub smtp: String,
113 
    /// `OxygenHub <hub@example>`.
114 
    pub from: String,
115 
}
116
117 
#[derive(Clone, Debug, Deserialize)]
118 
#[serde(default, deny_unknown_fields)]
119 
pub struct Registration {
120 
    /// `open`, `invite` or `closed`; the admin page can override it.
121 
    pub mode: String,
122 
}
123
124 
impl Default for Registration {
125 
    fn default() -> Self {
126 
        Registration { mode: "invite".into() }
127 
    }
128 
}
129
130 
#[derive(Clone, Debug, Deserialize)]
131 
#[serde(default, deny_unknown_fields)]
132 
pub struct Site {
133 
    pub name: String,
134 
    pub description: String,
135 
}
136
137 
#[derive(Clone, Debug, Deserialize)]
138 
#[serde(default, deny_unknown_fields)]
139 
pub struct Server {
140 
    /// Plain HTTP; empty disables it.
141 
    pub bind: String,
142 
    /// HTTPS; empty disables it. Needs `tls`.
143 
    pub tls_bind: String,
144 
    /// What links and clone URLs start with.
145 
    pub base_url: String,
146 
    /// Trust `X-Forwarded-*` from a terminating proxy.
147 
    pub behind_proxy: bool,
148 
}
149
150 
#[derive(Clone, Debug, Deserialize)]
151 
#[serde(default, deny_unknown_fields)]
152 
pub struct Tls {
153 
    /// Generate a certificate at `init` (developer edition).
154 
    pub self_signed: bool,
155 
    /// PEM files; relative paths are under the data directory.
156 
    pub cert: String,
157 
    pub key: String,
158 
}
159
160 
#[derive(Clone, Debug, Default, Deserialize)]
161 
#[serde(default, deny_unknown_fields)]
162 
pub struct Auth {
163 
    /// Bearer tokens allowed to push until accounts exist (hub 0.2). Empty
164 
    /// means every push is accepted, as `oxy serve` does.
165 
    pub push_tokens: Vec<String>,
166 
    /// For tests only: a base URL that stands in for every sign-in
167 
    /// provider (`{base}/{provider}/authorize|token|userinfo`).
168 
    pub signin_mock: Option<String>,
169 
}
170
171 
#[derive(Clone, Debug, Deserialize)]
172 
#[serde(default, deny_unknown_fields)]
173 
pub struct Limits {
174 
    /// Largest file rendered in the browser, e.g. `2MiB`.
175 
    pub render_limit: ByteSize,
176 
    pub asset_limit: ByteSize,
177 
    pub push_body_limit: ByteSize,
178 
}
179
180 
#[derive(Clone, Debug, Deserialize)]
181 
#[serde(default, deny_unknown_fields)]
182 
pub struct Retention {
183 
    pub trash_days: u32,
184 
    pub webhook_log_days: u32,
185 
    /// The UTC hour at which every repository is garbage collected
186 
    /// (spec §17.2); 24 or more turns the nightly gc off.
187 
    pub gc_hour: u32,
188 
}
189
190 
/// A byte count written as `512`, `2MiB`, `4GiB`, `100kB`.
191 
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
192 
pub struct ByteSize(pub u64);
193
194 
impl ByteSize {
195 
    pub fn parse(s: &str) -> Option<ByteSize> {
196 
        let s = s.trim();
197 
        let digits: String = s.chars().take_while(|c| c.is_ascii_digit()).collect();
198 
        let unit = s[digits.len()..].trim();
199 
        let n: u64 = digits.parse().ok()?;
200 
        let mult = match unit {
201 
            "" | "B" => 1,
202 
            "k" | "kB" | "KB" => 1000,
203 
            "KiB" | "K" => 1 << 10,
204 
            "M" | "MB" => 1_000_000,
205 
            "MiB" => 1 << 20,
206 
            "G" | "GB" => 1_000_000_000,
207 
            "GiB" => 1 << 30,
208 
            _ => return None,
209 
        };
210 
        Some(ByteSize(n.checked_mul(mult)?))
211 
    }
212 
}
213
214 
impl<'de> Deserialize<'de> for ByteSize {
215 
    fn deserialize<D: serde::Deserializer<'de>>(d: D) -> Result<ByteSize, D::Error> {
216 
        #[derive(Deserialize)]
217 
        #[serde(untagged)]
218 
        enum Raw {
219 
            Number(u64),
220 
            Text(String),
221 
        }
222 
        match Raw::deserialize(d)? {
223 
            Raw::Number(n) => Ok(ByteSize(n)),
224 
            Raw::Text(t) => ByteSize::parse(&t).ok_or_else(|| serde::de::Error::custom(format!("not a byte size: {t:?}"))),
225 
        }
226 
    }
227 
}
228
229 
impl Default for Site {
230 
    fn default() -> Self {
231 
        Site { name: "OxygenHub".into(), description: "Repositories, proposals and issues for Oxygen".into() }
232 
    }
233 
}
234
235 
impl Default for Server {
236 
    fn default() -> Self {
237 
        Server { bind: "127.0.0.1:7300".into(), tls_bind: String::new(), base_url: "http://127.0.0.1:7300".into(), behind_proxy: false }
238 
    }
239 
}
240
241 
impl Default for Tls {
242 
    fn default() -> Self {
243 
        Tls { self_signed: false, cert: "keys/tls.crt".into(), key: "keys/tls.key".into() }
244 
    }
245 
}
246
247 
impl Default for Limits {
248 
    fn default() -> Self {
249 
        Limits { render_limit: ByteSize(2 << 20), asset_limit: ByteSize(512 << 20), push_body_limit: ByteSize(4 << 30) }
250 
    }
251 
}
252
253 
impl Default for Retention {
254 
    fn default() -> Self {
255 
        Retention { trash_days: 30, webhook_log_days: 30, gc_hour: 3 }
256 
    }
257 
}
258
259 
impl Default for Config {
260 
    fn default() -> Self {
261 
        Config {
262 
            data: PathBuf::from("data"),
263 
            site: Site::default(),
264 
            server: Server::default(),
265 
            tls: Tls::default(),
266 
            auth: Auth::default(),
267 
            registration: Registration::default(),
268 
            email: Email::default(),
269 
            limits: Limits::default(),
270 
            retention: Retention::default(),
271 
            flow: Flow::default(),
272 
            apt: Apt::default(),
273 
            diffusion: Diffusion::default(),
274 
            backups: Backups::default(),
275 
        }
276 
    }
277 
}
278
279 
impl Config {
280 
    /// Read `<data>/hub.toml` if present, then apply environment overrides.
281 
    pub fn load(data: &Path) -> anyhow::Result<Config> {
282 
        let path = data.join("hub.toml");
283 
        let mut cfg = match std::fs::read_to_string(&path) {
284 
            Ok(text) => Config::parse(&text)?,
285 
            Err(e) if e.kind() == std::io::ErrorKind::NotFound => Config::default(),
286 
            Err(e) => return Err(anyhow::anyhow!("reading {}: {e}", path.display())),
287 
        };
288 
        cfg.data = data.to_path_buf();
289 
        cfg.apply_env(|k| std::env::var(k).ok());
290 
        Ok(cfg)
291 
    }
292
293 
    pub fn parse(text: &str) -> anyhow::Result<Config> {
294 
        Ok(toml::from_str(text)?)
295 
    }
296
297 
    /// `OXYHUB_SERVER_BIND`, `OXYHUB_SITE_NAME`, … override the file.
298 
    pub fn apply_env(&mut self, get: impl Fn(&str) -> Option<String>) {
299 
        if let Some(v) = get("OXYHUB_SITE_NAME") {
300 
            self.site.name = v;
301 
        }
302 
        if let Some(v) = get("OXYHUB_SITE_DESCRIPTION") {
303 
            self.site.description = v;
304 
        }
305 
        if let Some(v) = get("OXYHUB_SERVER_BIND") {
306 
            self.server.bind = v;
307 
        }
308 
        if let Some(v) = get("OXYHUB_SERVER_TLS_BIND") {
309 
            self.server.tls_bind = v;
310 
        }
311 
        if let Some(v) = get("OXYHUB_SERVER_BASE_URL") {
312 
            self.server.base_url = v;
313 
        }
314 
        if let Some(v) = get("OXYHUB_SERVER_BEHIND_PROXY") {
315 
            self.server.behind_proxy = matches!(v.as_str(), "1" | "true" | "yes");
316 
        }
317 
        if let Some(v) = get("OXYHUB_TLS_SELF_SIGNED") {
318 
            self.tls.self_signed = matches!(v.as_str(), "1" | "true" | "yes");
319 
        }
320 
        if let Some(v) = get("OXYHUB_REGISTRATION_MODE") {
321 
            self.registration.mode = v;
322 
        }
323 
        if let Some(v) = get("OXYHUB_AUTH_PUSH_TOKENS") {
324 
            self.auth.push_tokens = v.split(',').map(str::trim).filter(|s| !s.is_empty()).map(String::from).collect();
325 
        }
326 
        if let Some(v) = get("OXYHUB_LIMITS_RENDER_LIMIT").and_then(|v| ByteSize::parse(&v)) {
327 
            self.limits.render_limit = v;
328 
        }
329 
    }
330
331 
    pub fn bind_addr(&self) -> anyhow::Result<Option<SocketAddr>> {
332 
        parse_addr(&self.server.bind)
333 
    }
334
335 
    pub fn tls_bind_addr(&self) -> anyhow::Result<Option<SocketAddr>> {
336 
        parse_addr(&self.server.tls_bind)
337 
    }
338
339 
    pub fn tls_cert(&self) -> PathBuf {
340 
        self.data.join(&self.tls.cert)
341 
    }
342
343 
    pub fn tls_key(&self) -> PathBuf {
344 
        self.data.join(&self.tls.key)
345 
    }
346
347 
    pub fn repos_dir(&self) -> PathBuf {
348 
        self.data.join("repos")
349 
    }
350
351 
    pub fn keys_dir(&self) -> PathBuf {
352 
        self.data.join("keys")
353 
    }
354
355 
    pub fn db_path(&self) -> PathBuf {
356 
        self.data.join("hub.db")
357 
    }
358
359 
    /// The base URL without a trailing slash.
360 
    pub fn base_url(&self) -> &str {
361 
        self.server.base_url.trim_end_matches('/')
362 
    }
363 
}
364
365 
fn parse_addr(s: &str) -> anyhow::Result<Option<SocketAddr>> {
366 
    if s.trim().is_empty() {
367 
        return Ok(None);
368 
    }
369 
    Ok(Some(s.parse().map_err(|e| anyhow::anyhow!("bind address {s:?}: {e}"))?))
370 
}
371
372 
#[cfg(test)]
373 
mod tests {
374 
    use super::*;
375
376 
    #[test]
377 
    fn byte_sizes() {
378 
        assert_eq!(ByteSize::parse("2MiB"), Some(ByteSize(2 << 20)));
379 
        assert_eq!(ByteSize::parse("512"), Some(ByteSize(512)));
380 
        assert_eq!(ByteSize::parse("4 GiB"), Some(ByteSize(4 << 30)));
381 
        assert_eq!(ByteSize::parse("100kB"), Some(ByteSize(100_000)));
382 
        assert_eq!(ByteSize::parse("lots"), None);
383 
    }
384
385 
    #[test]
386 
    fn file_then_environment() {
387 
        let mut cfg = Config::parse("[server]\nbind = \"0.0.0.0:7300\"\n[limits]\nrender_limit = \"1MiB\"\n").unwrap();
388 
        assert_eq!(cfg.server.bind, "0.0.0.0:7300");
389 
        assert_eq!(cfg.limits.render_limit, ByteSize(1 << 20));
390 
        assert_eq!(cfg.site.name, "OxygenHub");
391 
        cfg.apply_env(|k| match k {
392 
            "OXYHUB_SITE_NAME" => Some("Earth".into()),
393 
            "OXYHUB_AUTH_PUSH_TOKENS" => Some("a, b".into()),
394 
            _ => None,
395 
        });
396 
        assert_eq!(cfg.site.name, "Earth");
397 
        assert_eq!(cfg.auth.push_tokens, ["a", "b"]);
398 
        assert!(Config::parse("[nope]\nx = 1\n").is_err(), "unknown sections are errors, not silence");
399 
    }
400 
}