rust_web_server/entry_point/
mod.rs

1#[cfg(test)]
2mod tests;
3pub mod command_line_args;
4pub mod config_file;
5pub mod environment_variables;
6
7
8use std::{env};
9use crate::virtual_host::VirtualHostConfig;
10
11use crate::entry_point::command_line_args::{override_environment_variables_from_command_line_args};
12use crate::entry_point::config_file::override_environment_variables_from_config;
13use crate::entry_point::environment_variables::read_system_environment_variables;
14
15#[derive(PartialEq, Eq, Clone, Debug)]
16pub struct Config {}
17
18impl Config {
19    pub const RWS_CONFIG_IP: &'static str = "RWS_CONFIG_IP";
20    /// Default is `0.0.0.0` so the server is reachable inside containers and K8s pods.
21    /// For local development you can override to `127.0.0.1` via env var or config file.
22    pub const RWS_CONFIG_IP_DEFAULT_VALUE: &'static str = "0.0.0.0";
23
24    /// Log format: `"combined"` (default, Combined Log Format) or `"json"` (structured JSON).
25    pub const RWS_CONFIG_LOG_FORMAT: &'static str = "RWS_CONFIG_LOG_FORMAT";
26    pub const RWS_CONFIG_LOG_FORMAT_DEFAULT_VALUE: &'static str = "json";
27
28    pub const RWS_CONFIG_PORT: &'static str = "RWS_CONFIG_PORT";
29    pub const RWS_CONFIG_PORT_DEFAULT_VALUE: &'static str = "7878";
30
31    pub const RWS_CONFIG_THREAD_COUNT: &'static str = "RWS_CONFIG_THREAD_COUNT";
32    pub const RWS_CONFIG_THREAD_COUNT_DEFAULT_VALUE: &'static str = "200";
33
34    pub const RWS_CONFIG_CORS_ALLOW_ALL: &'static str = "RWS_CONFIG_CORS_ALLOW_ALL";
35    pub const RWS_CONFIG_CORS_ALLOW_ALL_DEFAULT_VALUE: &'static str = "true";
36
37    pub const RWS_CONFIG_CORS_ALLOW_ORIGINS: &'static str = "RWS_CONFIG_CORS_ALLOW_ORIGINS";
38    pub const RWS_CONFIG_CORS_ALLOW_ORIGINS_DEFAULT_VALUE: &'static str = "";
39
40    pub const RWS_CONFIG_CORS_ALLOW_CREDENTIALS: &'static str = "RWS_CONFIG_CORS_ALLOW_CREDENTIALS";
41    pub const RWS_CONFIG_CORS_ALLOW_CREDENTIALS_DEFAULT_VALUE: &'static str = "";
42
43    pub const RWS_CONFIG_CORS_ALLOW_HEADERS: &'static str = "RWS_CONFIG_CORS_ALLOW_HEADERS";
44    pub const RWS_CONFIG_CORS_ALLOW_HEADERS_DEFAULT_VALUE: &'static str = "";
45
46    pub const RWS_CONFIG_CORS_ALLOW_METHODS: &'static str = "RWS_CONFIG_CORS_ALLOW_METHODS";
47    pub const RWS_CONFIG_CORS_ALLOW_METHODS_DEFAULT_VALUE: &'static str = "";
48
49    pub const RWS_CONFIG_CORS_EXPOSE_HEADERS: &'static str = "RWS_CONFIG_CORS_EXPOSE_HEADERS";
50    pub const RWS_CONFIG_CORS_EXPOSE_HEADERS_DEFAULT_VALUE: &'static str = "";
51
52    pub const RWS_CONFIG_CORS_MAX_AGE: &'static str = "RWS_CONFIG_CORS_MAX_AGE";
53    pub const RWS_CONFIG_CORS_MAX_AGE_DEFAULT_VALUE: &'static str = "86400";
54
55    pub const RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES: &'static str = "RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES";
56    pub const RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES_DEFAULT_VALUE: &'static str = "10000";
57
58    /// Maximum accepted request body size in bytes, checked against `Content-Length`
59    /// before any body bytes are read off the socket. `0` (the default) means
60    /// unlimited — this is opt-in, not a default-on behavior change. Requests whose
61    /// declared body exceeds this get `413 Payload Too Large` and the connection is
62    /// closed (not kept alive), since bytes the server chose not to read are still
63    /// queued on the client's side of the socket.
64    pub const RWS_CONFIG_MAX_BODY_SIZE_IN_BYTES: &'static str = "RWS_CONFIG_MAX_BODY_SIZE_IN_BYTES";
65    pub const RWS_CONFIG_MAX_BODY_SIZE_IN_BYTES_DEFAULT_VALUE: &'static str = "0";
66
67    /// Serve this file (e.g. `"index.html"`) for a `GET`/`HEAD` request that doesn't
68    /// match any real file/directory, instead of `404` — the standard client-side-router
69    /// ("SPA") fallback pattern needed for deep links in a React Router / Vue Router /
70    /// etc. app. Empty (default) disables it entirely. See
71    /// `crate::app::controller::static_resource` for the matching heuristic (skips
72    /// paths that look like a missed static asset, i.e. the last segment has a `.`).
73    pub const RWS_CONFIG_SPA_FALLBACK: &'static str = "RWS_CONFIG_SPA_FALLBACK";
74    pub const RWS_CONFIG_SPA_FALLBACK_DEFAULT_VALUE: &'static str = "";
75
76    /// Comma-separated path prefixes (e.g. `"/api,/healthz"`) that never receive the
77    /// SPA fallback even when `RWS_CONFIG_SPA_FALLBACK` is set — so a real API `404`
78    /// isn't silently rewritten into a `200`. Empty (default) excludes nothing.
79    pub const RWS_CONFIG_SPA_FALLBACK_EXCLUDE_PREFIXES: &'static str = "RWS_CONFIG_SPA_FALLBACK_EXCLUDE_PREFIXES";
80    pub const RWS_CONFIG_SPA_FALLBACK_EXCLUDE_PREFIXES_DEFAULT_VALUE: &'static str = "";
81
82    pub const RWS_CONFIG_TLS_CERT_FILE: &'static str = "RWS_CONFIG_TLS_CERT_FILE";
83    pub const RWS_CONFIG_TLS_CERT_FILE_DEFAULT_VALUE: &'static str = "";
84
85    pub const RWS_CONFIG_TLS_KEY_FILE: &'static str = "RWS_CONFIG_TLS_KEY_FILE";
86    pub const RWS_CONFIG_TLS_KEY_FILE_DEFAULT_VALUE: &'static str = "";
87
88    /// Path to a PEM-encoded CA certificate used to verify client certificates (mTLS).
89    /// When set, the TLS handshake requires a valid client certificate signed by this CA.
90    /// Connections without a valid cert are rejected at the TLS layer (before any HTTP processing).
91    pub const RWS_CONFIG_TLS_CLIENT_CA_FILE: &'static str = "RWS_CONFIG_TLS_CLIENT_CA_FILE";
92    pub const RWS_CONFIG_TLS_CLIENT_CA_FILE_DEFAULT_VALUE: &'static str = "";
93
94    /// Directory containing Tera HTML templates (default: `"templates"`). Requires `tera` feature.
95    pub const RWS_CONFIG_TEMPLATE_DIR: &'static str = "RWS_CONFIG_TEMPLATE_DIR";
96    pub const RWS_CONFIG_TEMPLATE_DIR_DEFAULT_VALUE: &'static str = "templates";
97
98    /// When non-empty, a plain-HTTP listener on this port redirects all requests to HTTPS.
99    /// Set to e.g. `"80"` when running on standard ports. Requires TLS to be configured.
100    pub const RWS_CONFIG_HTTP_REDIRECT_PORT: &'static str = "RWS_CONFIG_HTTP_REDIRECT_PORT";
101    pub const RWS_CONFIG_HTTP_REDIRECT_PORT_DEFAULT_VALUE: &'static str = "";
102
103    // ── ACME (Automatic Certificate Management Environment) ───────────────────
104
105    /// Comma-separated list of domain names to obtain a certificate for.
106    /// Setting this activates ACME at startup. Example: `"example.com,www.example.com"`
107    pub const RWS_CONFIG_ACME_DOMAINS: &'static str = "RWS_CONFIG_ACME_DOMAINS";
108    pub const RWS_CONFIG_ACME_DOMAINS_DEFAULT_VALUE: &'static str = "";
109
110    /// Contact email sent to the CA. Recommended but not required.
111    pub const RWS_CONFIG_ACME_EMAIL: &'static str = "RWS_CONFIG_ACME_EMAIL";
112    pub const RWS_CONFIG_ACME_EMAIL_DEFAULT_VALUE: &'static str = "";
113
114    /// Set to `"true"` to use the Let's Encrypt staging environment (for testing).
115    pub const RWS_CONFIG_ACME_STAGING: &'static str = "RWS_CONFIG_ACME_STAGING";
116    pub const RWS_CONFIG_ACME_STAGING_DEFAULT_VALUE: &'static str = "false";
117
118    /// Custom ACME directory URL. Defaults to Let's Encrypt production.
119    pub const RWS_CONFIG_ACME_DIRECTORY: &'static str = "RWS_CONFIG_ACME_DIRECTORY";
120    pub const RWS_CONFIG_ACME_DIRECTORY_DEFAULT_VALUE: &'static str = "";
121
122    /// Where to write the provisioned certificate chain (PEM). Defaults to `RWS_CONFIG_TLS_CERT_FILE`,
123    /// or `cert.pem` in the working directory when that is empty too.
124    pub const RWS_CONFIG_ACME_CERT_PATH: &'static str = "RWS_CONFIG_ACME_CERT_PATH";
125    pub const RWS_CONFIG_ACME_CERT_PATH_DEFAULT_VALUE: &'static str = "";
126
127    /// Where to write the certificate's private key (PEM). Defaults to `RWS_CONFIG_TLS_KEY_FILE`,
128    /// or `key.pem` in the working directory when that is empty too.
129    pub const RWS_CONFIG_ACME_KEY_PATH: &'static str = "RWS_CONFIG_ACME_KEY_PATH";
130    pub const RWS_CONFIG_ACME_KEY_PATH_DEFAULT_VALUE: &'static str = "";
131
132    /// Port for the temporary HTTP-01 challenge server (default 80).
133    /// Must be reachable from the internet on port 80. Not used with DNS-01.
134    pub const RWS_CONFIG_ACME_CHALLENGE_PORT: &'static str = "RWS_CONFIG_ACME_CHALLENGE_PORT";
135    pub const RWS_CONFIG_ACME_CHALLENGE_PORT_DEFAULT_VALUE: &'static str = "80";
136
137    /// Renew when fewer than this many days remain on the certificate (default 30).
138    pub const RWS_CONFIG_ACME_RENEW_BEFORE_DAYS: &'static str = "RWS_CONFIG_ACME_RENEW_BEFORE_DAYS";
139    pub const RWS_CONFIG_ACME_RENEW_BEFORE_DAYS_DEFAULT_VALUE: &'static str = "30";
140
141    /// Path to persist the ACME account key between restarts (default `acme_account.key`).
142    pub const RWS_CONFIG_ACME_ACCOUNT_KEY_PATH: &'static str = "RWS_CONFIG_ACME_ACCOUNT_KEY_PATH";
143    pub const RWS_CONFIG_ACME_ACCOUNT_KEY_PATH_DEFAULT_VALUE: &'static str = "acme_account.key";
144
145    /// PEM file of extra root CAs to trust when talking to the ACME directory,
146    /// on top of the public Web PKI roots — for a private ACME CA (step-ca,
147    /// Pebble, an internal Boulder). Empty means public roots only.
148    pub const RWS_CONFIG_ACME_CA_FILE: &'static str = "RWS_CONFIG_ACME_CA_FILE";
149    pub const RWS_CONFIG_ACME_CA_FILE_DEFAULT_VALUE: &'static str = "";
150
151    /// Seconds between certificate-expiry checks in the renewal loop (default 12h).
152    /// After a failed renewal the next attempt comes after at most one hour.
153    pub const RWS_CONFIG_ACME_RENEW_CHECK_INTERVAL_SECS: &'static str = "RWS_CONFIG_ACME_RENEW_CHECK_INTERVAL_SECS";
154    pub const RWS_CONFIG_ACME_RENEW_CHECK_INTERVAL_SECS_DEFAULT_VALUE: &'static str = "43200";
155
156
157    pub const RWS_DEFAULT_IP: &'static str = "127.0.0.1";
158    pub const RWS_DEFAULT_PORT: &'static i32 = &7878;
159    pub const RWS_DEFAULT_THREAD_COUNT: &'static i32 = &200;
160    pub const RWS_DEFAULT_REQUEST_ALLOCATION_SIZE_IN_BYTES: &'static i64 = &10000;
161
162
163}
164
165pub fn bootstrap() {
166    read_system_environment_variables();
167    override_environment_variables_from_config(None);
168    override_environment_variables_from_command_line_args();
169}
170
171pub fn set_default_values() {
172    println!("  Initializing default values");
173
174    let is_var_set = env::var(Config::RWS_CONFIG_IP).is_ok();
175    if !is_var_set {
176        env::set_var(Config::RWS_CONFIG_IP, Config::RWS_CONFIG_IP_DEFAULT_VALUE);
177        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_IP, Config::RWS_CONFIG_IP_DEFAULT_VALUE);
178    } else {
179        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_IP);
180    }
181
182
183    let is_var_set = env::var(Config::RWS_CONFIG_PORT).is_ok();
184    if !is_var_set {
185        env::set_var(Config::RWS_CONFIG_PORT, Config::RWS_CONFIG_PORT_DEFAULT_VALUE);
186        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_PORT, Config::RWS_CONFIG_PORT_DEFAULT_VALUE);
187    } else {
188        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_PORT);
189    }
190
191    let is_var_set = env::var(Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES).is_ok();
192    if !is_var_set {
193        env::set_var(Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES, Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES_DEFAULT_VALUE);
194        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES, Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES_DEFAULT_VALUE);
195    } else {
196        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES);
197    }
198
199
200    let is_var_set = env::var(Config::RWS_CONFIG_THREAD_COUNT).is_ok();
201    if !is_var_set {
202        env::set_var(Config::RWS_CONFIG_THREAD_COUNT, Config::RWS_CONFIG_THREAD_COUNT_DEFAULT_VALUE);
203        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_THREAD_COUNT, Config::RWS_CONFIG_THREAD_COUNT_DEFAULT_VALUE);
204    } else {
205        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_THREAD_COUNT);
206    }
207
208    let is_var_set = env::var(Config::RWS_CONFIG_CORS_ALLOW_ALL).is_ok();
209    if !is_var_set {
210        env::set_var(Config::RWS_CONFIG_CORS_ALLOW_ALL, Config::RWS_CONFIG_CORS_ALLOW_ALL_DEFAULT_VALUE);
211        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_ALLOW_ALL, Config::RWS_CONFIG_CORS_ALLOW_ALL_DEFAULT_VALUE);
212    } else {
213        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_ALLOW_ALL);
214    }
215
216
217    let is_var_set = env::var(Config::RWS_CONFIG_CORS_ALLOW_ORIGINS).is_ok();
218    if !is_var_set {
219        env::set_var(Config::RWS_CONFIG_CORS_ALLOW_ORIGINS, Config::RWS_CONFIG_CORS_ALLOW_ORIGINS_DEFAULT_VALUE);
220        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_ALLOW_ORIGINS, Config::RWS_CONFIG_CORS_ALLOW_ORIGINS_DEFAULT_VALUE);
221    } else {
222        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_ALLOW_ORIGINS);
223    }
224
225    let is_var_set = env::var(Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS).is_ok();
226    if !is_var_set {
227        env::set_var(Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS, Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS_DEFAULT_VALUE);
228        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS, Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS_DEFAULT_VALUE);
229    } else {
230        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_ALLOW_CREDENTIALS);
231    }
232
233    let is_var_set = env::var(Config::RWS_CONFIG_CORS_ALLOW_HEADERS).is_ok();
234    if !is_var_set {
235        env::set_var(Config::RWS_CONFIG_CORS_ALLOW_HEADERS, Config::RWS_CONFIG_CORS_ALLOW_HEADERS_DEFAULT_VALUE);
236        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_ALLOW_HEADERS, Config::RWS_CONFIG_CORS_ALLOW_HEADERS_DEFAULT_VALUE);
237    } else {
238        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_ALLOW_HEADERS);
239    }
240
241
242    let is_var_set = env::var(Config::RWS_CONFIG_CORS_ALLOW_METHODS).is_ok();
243    if !is_var_set {
244        env::set_var(Config::RWS_CONFIG_CORS_ALLOW_METHODS, Config::RWS_CONFIG_CORS_ALLOW_METHODS_DEFAULT_VALUE);
245        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_ALLOW_METHODS, Config::RWS_CONFIG_CORS_ALLOW_METHODS_DEFAULT_VALUE);
246    } else {
247        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_ALLOW_METHODS);
248    }
249
250    let is_var_set = env::var(Config::RWS_CONFIG_CORS_EXPOSE_HEADERS).is_ok();
251    if !is_var_set {
252        env::set_var(Config::RWS_CONFIG_CORS_EXPOSE_HEADERS, Config::RWS_CONFIG_CORS_EXPOSE_HEADERS_DEFAULT_VALUE);
253        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_EXPOSE_HEADERS, Config::RWS_CONFIG_CORS_EXPOSE_HEADERS_DEFAULT_VALUE);
254    } else {
255        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_EXPOSE_HEADERS);
256    }
257
258    let is_var_set = env::var(Config::RWS_CONFIG_CORS_MAX_AGE).is_ok();
259    if !is_var_set {
260        env::set_var(Config::RWS_CONFIG_CORS_MAX_AGE, Config::RWS_CONFIG_CORS_MAX_AGE_DEFAULT_VALUE);
261        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_CORS_MAX_AGE, Config::RWS_CONFIG_CORS_MAX_AGE_DEFAULT_VALUE);
262    } else {
263        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_CORS_MAX_AGE);
264    }
265
266
267    let is_var_set = env::var(Config::RWS_CONFIG_TLS_CERT_FILE).is_ok();
268    if !is_var_set {
269        env::set_var(Config::RWS_CONFIG_TLS_CERT_FILE, Config::RWS_CONFIG_TLS_CERT_FILE_DEFAULT_VALUE);
270        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_TLS_CERT_FILE, Config::RWS_CONFIG_TLS_CERT_FILE_DEFAULT_VALUE);
271    } else {
272        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_TLS_CERT_FILE);
273    }
274
275    let is_var_set = env::var(Config::RWS_CONFIG_TLS_KEY_FILE).is_ok();
276    if !is_var_set {
277        env::set_var(Config::RWS_CONFIG_TLS_KEY_FILE, Config::RWS_CONFIG_TLS_KEY_FILE_DEFAULT_VALUE);
278        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_TLS_KEY_FILE, Config::RWS_CONFIG_TLS_KEY_FILE_DEFAULT_VALUE);
279    } else {
280        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_TLS_KEY_FILE);
281    }
282
283    let is_var_set = env::var(Config::RWS_CONFIG_HTTP_REDIRECT_PORT).is_ok();
284    if !is_var_set {
285        env::set_var(Config::RWS_CONFIG_HTTP_REDIRECT_PORT, Config::RWS_CONFIG_HTTP_REDIRECT_PORT_DEFAULT_VALUE);
286        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_HTTP_REDIRECT_PORT, Config::RWS_CONFIG_HTTP_REDIRECT_PORT_DEFAULT_VALUE);
287    } else {
288        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_HTTP_REDIRECT_PORT);
289    }
290
291    let is_var_set = env::var(Config::RWS_CONFIG_LOG_FORMAT).is_ok();
292    if !is_var_set {
293        env::set_var(Config::RWS_CONFIG_LOG_FORMAT, Config::RWS_CONFIG_LOG_FORMAT_DEFAULT_VALUE);
294        println!("    Default value  for '{}' is '{}'", Config::RWS_CONFIG_LOG_FORMAT, Config::RWS_CONFIG_LOG_FORMAT_DEFAULT_VALUE);
295    } else {
296        println!("    There is an environment variable  for '{}', default value won't be set", Config::RWS_CONFIG_LOG_FORMAT);
297    }
298
299    println!("  End of initializing default values\n");
300}
301
302
303pub fn get_ip_port_thread_count() -> (String, i32, i32) {
304    let mut ip : String = Config::RWS_CONFIG_IP_DEFAULT_VALUE.to_string();
305    let mut port: i32 = *Config::RWS_DEFAULT_PORT;
306    let mut thread_count: i32 = *Config::RWS_DEFAULT_THREAD_COUNT;
307
308    let boxed_ip = env::var(Config::RWS_CONFIG_IP);
309    if boxed_ip.is_ok() {
310        ip = boxed_ip.unwrap()
311    }
312
313    let boxed_port = env::var(Config::RWS_CONFIG_PORT);
314    if boxed_port.is_ok() {
315        let _port = boxed_port.unwrap();
316        let boxed_parse = _port.parse::<i32>();
317        if boxed_parse.is_ok() {
318            port = boxed_parse.unwrap();
319        } else {
320            eprintln!("unable to parse port value, expected number, got {}, variable: {}",
321                      _port, Config::RWS_CONFIG_PORT);
322        }
323    } else {
324        eprintln!("unable to parse port value, variable: {}", Config::RWS_CONFIG_PORT);
325    }
326
327    let boxed_thread_count = env::var(Config::RWS_CONFIG_THREAD_COUNT);
328    if boxed_thread_count.is_ok() {
329        let _thread_count = boxed_thread_count.unwrap();
330        let boxed_parse = _thread_count.parse();
331        if boxed_parse.is_ok() {
332            thread_count = boxed_parse.unwrap()
333        } else {
334            eprintln!("unable to parse thread count value, expected number, got {}, variable: {}",
335                      thread_count, Config::RWS_CONFIG_THREAD_COUNT);
336        }
337
338    } else {
339        eprintln!("unable to parse thread count value, variable: {}", Config::RWS_CONFIG_THREAD_COUNT);
340    }
341
342    (ip, port, thread_count)
343}
344
345/// Read all `[[virtual_host]]` entries from config / env vars.
346///
347/// Each entry must have `RWS_CONFIG_VIRTUAL_HOST_{N}_DOMAIN` set; reading
348/// stops at the first missing index.  `cert_file` and `key_file` default to
349/// empty string if omitted.
350pub fn get_virtual_hosts() -> Vec<VirtualHostConfig> {
351    let mut hosts = Vec::new();
352    let mut i = 0usize;
353    loop {
354        match env::var(format!("RWS_CONFIG_VIRTUAL_HOST_{}_DOMAIN", i)) {
355            Err(_) => break,
356            Ok(domain) => {
357                let cert_file = env::var(format!("RWS_CONFIG_VIRTUAL_HOST_{}_CERT_FILE", i))
358                    .unwrap_or_default();
359                let key_file = env::var(format!("RWS_CONFIG_VIRTUAL_HOST_{}_KEY_FILE", i))
360                    .unwrap_or_default();
361                hosts.push(VirtualHostConfig { domain, cert_file, key_file });
362                i += 1;
363            }
364        }
365    }
366    hosts
367}
368
369pub fn get_request_allocation_size() -> i64 {
370    let mut request_allocation_size: i64 = *Config::RWS_DEFAULT_REQUEST_ALLOCATION_SIZE_IN_BYTES;
371
372    let boxed_port = env::var(Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES);
373    if boxed_port.is_ok() {
374        let _request_allocation_size = boxed_port.unwrap();
375        let boxed_parse = _request_allocation_size.parse::<i64>();
376        if boxed_parse.is_ok() {
377            request_allocation_size = boxed_parse.unwrap();
378        } else {
379            eprintln!("unable to parse port value, expected number, got {}, variable: {}",
380                      _request_allocation_size, Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES);
381        }
382    } else {
383        eprintln!("unable to parse request allocation size value, variable: {}", Config::RWS_CONFIG_REQUEST_ALLOCATION_SIZE_IN_BYTES);
384    }
385
386
387    request_allocation_size
388}
389
390/// Maximum accepted request body size in bytes. `0` means unlimited (the default —
391/// enforcing a cap is opt-in). Read fresh on every call, so `RWS_CONFIG_MAX_BODY_SIZE_IN_BYTES`
392/// takes effect immediately, the same as [`get_request_allocation_size`].
393pub fn get_max_body_size() -> u64 {
394    env::var(Config::RWS_CONFIG_MAX_BODY_SIZE_IN_BYTES)
395        .ok()
396        .and_then(|v| v.parse::<u64>().ok())
397        .unwrap_or(0)
398}
399
400/// The configured SPA-fallback file (e.g. `"index.html"`), or `None` if
401/// `RWS_CONFIG_SPA_FALLBACK` is unset/empty (the default — disabled). Read
402/// fresh on every call, so it can be toggled via `rws.config.toml` + `SIGHUP`
403/// without a restart, the same as [`get_max_body_size`].
404pub fn get_spa_fallback() -> Option<String> {
405    env::var(Config::RWS_CONFIG_SPA_FALLBACK).ok().filter(|v| !v.is_empty())
406}
407
408/// Path prefixes that never receive the SPA fallback (`RWS_CONFIG_SPA_FALLBACK_EXCLUDE_PREFIXES`,
409/// comma-separated), even when the fallback is configured. Empty (default) excludes nothing.
410pub fn get_spa_fallback_exclude_prefixes() -> Vec<String> {
411    env::var(Config::RWS_CONFIG_SPA_FALLBACK_EXCLUDE_PREFIXES)
412        .ok()
413        .map(|v| v.split(',').map(|s| s.trim().to_string()).filter(|s| !s.is_empty()).collect())
414        .unwrap_or_default()
415}
416
rust_web_server/entry_point/mod.rs

rust_web_server/entry_point/
mod.rs
