1 use config::{Config, ConfigError, Environment, File};
2 use serde::Deserialize;
3 use std::{env, fs, io::Error, net::IpAddr, sync::RwLock};
5 static CONFIG_FILE_DEFAULTS: &str = "config/defaults.hjson";
6 static CONFIG_FILE: &str = "config/config.hjson";
8 #[derive(Debug, Deserialize, Clone)]
10 pub setup: Option<Setup>,
11 pub database: DatabaseConfig,
15 pub jwt_secret: String,
16 pub pictrs_url: String,
17 pub rate_limit: RateLimitConfig,
18 pub email: Option<EmailConfig>,
19 pub federation: FederationConfig,
20 pub captcha: CaptchaConfig,
23 #[derive(Debug, Deserialize, Clone)]
25 pub admin_username: String,
26 pub admin_password: String,
27 pub admin_email: Option<String>,
28 pub site_name: String,
31 #[derive(Debug, Deserialize, Clone)]
32 pub struct RateLimitConfig {
34 pub message_per_second: i32,
36 pub post_per_second: i32,
38 pub register_per_second: i32,
40 pub image_per_second: i32,
43 #[derive(Debug, Deserialize, Clone)]
44 pub struct EmailConfig {
45 pub smtp_server: String,
46 pub smtp_login: Option<String>,
47 pub smtp_password: Option<String>,
48 pub smtp_from_address: String,
52 #[derive(Debug, Deserialize, Clone)]
53 pub struct CaptchaConfig {
55 pub difficulty: String, // easy, medium, or hard
58 #[derive(Debug, Deserialize, Clone)]
59 pub struct DatabaseConfig {
68 #[derive(Debug, Deserialize, Clone)]
69 pub struct FederationConfig {
71 pub tls_enabled: bool,
72 pub allowed_instances: String,
73 pub blocked_instances: String,
77 static ref SETTINGS: RwLock<Settings> = RwLock::new(match Settings::init() {
79 Err(e) => panic!("{}", e),
84 /// Reads config from the files and environment.
85 /// First, defaults are loaded from CONFIG_FILE_DEFAULTS, then these values can be overwritten
86 /// from CONFIG_FILE (optional). Finally, values from the environment (with prefix LEMMY) are
87 /// added to the config.
89 /// Note: The env var `LEMMY_DATABASE_URL` is parsed in
90 /// `lemmy_db/src/lib.rs::get_database_url_from_env()`
91 fn init() -> Result<Self, ConfigError> {
92 let mut s = Config::new();
94 s.merge(File::with_name(&Self::get_config_defaults_location()))?;
96 s.merge(File::with_name(CONFIG_FILE).required(false))?;
98 // Add in settings from the environment (with a prefix of LEMMY)
99 // Eg.. `LEMMY_DEBUG=1 ./target/app` would set the `debug` key
100 // Note: we need to use double underscore here, because otherwise variables containing
101 // underscore cant be set from environmnet.
102 // https://github.com/mehcode/config-rs/issues/73
103 s.merge(Environment::with_prefix("LEMMY").separator("__"))?;
108 /// Returns the config as a struct.
109 pub fn get() -> Self {
110 SETTINGS.read().unwrap().to_owned()
113 pub fn get_database_url(&self) -> String {
115 "postgres://{}:{}@{}:{}/{}",
117 self.database.password,
120 self.database.database
124 pub fn get_config_defaults_location() -> String {
125 env::var("LEMMY_CONFIG_LOCATION").unwrap_or_else(|_| CONFIG_FILE_DEFAULTS.to_string())
128 pub fn read_config_file() -> Result<String, Error> {
129 fs::read_to_string(CONFIG_FILE)
132 pub fn get_allowed_instances(&self) -> Vec<String> {
133 let mut allowed_instances: Vec<String> = self
137 .map(|d| d.to_string())
140 // The defaults.hjson config always returns a [""]
141 allowed_instances.retain(|d| !d.eq(""));
146 pub fn get_blocked_instances(&self) -> Vec<String> {
147 let mut blocked_instances: Vec<String> = self
151 .map(|d| d.to_string())
154 // The defaults.hjson config always returns a [""]
155 blocked_instances.retain(|d| !d.eq(""));
160 pub fn save_config_file(data: &str) -> Result<String, Error> {
161 fs::write(CONFIG_FILE, data)?;
163 // Reload the new settings
164 // From https://stackoverflow.com/questions/29654927/how-do-i-assign-a-string-to-a-mutable-static-variable/47181804#47181804
165 let mut new_settings = SETTINGS.write().unwrap();
166 *new_settings = match Settings::init() {
168 Err(e) => panic!("{}", e),
171 Self::read_config_file()