63 lines
1.3 KiB
JavaScript
63 lines
1.3 KiB
JavaScript
/**
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* An array of all valid environment variables
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* @constant
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* @type {string[]}
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*/
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const env_whitelist = [
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"CONTROL_HOST",
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"TOR_PATH",
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"INSTANCES",
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"SOCKS_HOST",
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"DNS_HOST",
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"HTTP_HOST",
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"LOG_LEVEL",
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'PARENT_DATA_DIRECTORIES',
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'LOAD_BALANCE_METHOD',
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"WEBSOCKET_CONTROL_PORT",
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"PROXY_BY_NAME",
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"DENY_UNIDENTIFIED_USERS"
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];
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/**
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* Converts a configuration property's name from env variable format to application config format
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* `"CONTROL_HOST"` -> `"controlHost"`
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* @param {string} env - Environment variable
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* @returns {string}
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* @private
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*/
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function env_to_config(env) {
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let a = env.toLowerCase().split('_');
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i = 1;
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while (i < a.length) {
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a[i] = a[i][0].toUpperCase() + a[i].substr(1);
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i++;
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}
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return a.join('');
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}
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/**
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* Sets up nconf with the `env` store.
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* @param {Provider} nconf - Instance of `nconf.Provider`.
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* @returns {Provider} - Same instance of `nconf.Provider`.
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*/
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function setup_nconf_env(nconf) {
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return nconf
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.env({
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whitelist: env_whitelist.concat(env_whitelist.map(env_to_config)),
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parseValues: true,
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transform: (obj) => {
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if (env_whitelist.includes(obj.key)) {
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if (obj.key.indexOf('_') !== -1) {
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obj.key = env_to_config(obj.key);
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}
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}
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return obj;
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}
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});
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};
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/**
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* This module returns a function
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* @module tor-router/nconf_load_env
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*/
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module.exports = setup_nconf_env; |