// Copyright 2017 Frédéric Guillot. All rights reserved. // Use of this source code is governed by the Apache 2.0 // license that can be found in the LICENSE file. package config import ( "net/url" "os" "strconv" "github.com/miniflux/miniflux/logger" ) const ( defaultBaseURL = "http://localhost" defaultDatabaseURL = "postgres://postgres:postgres@localhost/miniflux2?sslmode=disable" defaultWorkerPoolSize = 5 defaultPollingFrequency = 60 defaultBatchSize = 10 defaultDatabaseMaxConns = 20 defaultListenAddr = "127.0.0.1:8080" defaultCertFile = "" defaultKeyFile = "" defaultCertDomain = "" defaultCertCache = "/tmp/cert_cache" defaultSessionCleanupFrequency = 24 ) // Config manages configuration parameters. type Config struct { IsHTTPS bool baseURL string rootURL string basePath string } func (c *Config) get(key, fallback string) string { value := os.Getenv(key) if value == "" { return fallback } return value } func (c *Config) getInt(key string, fallback int) int { value := os.Getenv(key) if value == "" { return fallback } v, _ := strconv.Atoi(value) return v } // HasDebugMode returns true if debug mode is enabled. func (c *Config) HasDebugMode() bool { return c.get("DEBUG", "") != "" } // BaseURL returns the application base URL with path. func (c *Config) BaseURL() string { if c.baseURL == "" { c.baseURL = c.get("BASE_URL", defaultBaseURL) if c.baseURL[len(c.baseURL)-1:] == "/" { c.baseURL = c.baseURL[:len(c.baseURL)-1] } } return c.baseURL } // RootURL returns the base URL without path. func (c *Config) RootURL() string { if c.rootURL == "" { u, _ := url.Parse(c.BaseURL()) u.Path = "" c.rootURL = u.String() } return c.rootURL } // BasePath returns the application base path according to the base URL. func (c *Config) BasePath() string { if c.basePath == "" { u, _ := url.Parse(c.BaseURL()) c.basePath = u.Path } return c.basePath } // DatabaseURL returns the database URL. func (c *Config) DatabaseURL() string { value, exists := os.LookupEnv("DATABASE_URL") if !exists { logger.Info("The environment variable DATABASE_URL is not configured (the default value is used instead)") } if value == "" { value = defaultDatabaseURL } return value } // DatabaseMaxConnections returns the number of maximum database connections. func (c *Config) DatabaseMaxConnections() int { return c.getInt("DATABASE_MAX_CONNS", defaultDatabaseMaxConns) } // ListenAddr returns the listen address for the HTTP server. func (c *Config) ListenAddr() string { return c.get("LISTEN_ADDR", defaultListenAddr) } // CertFile returns the SSL certificate filename if any. func (c *Config) CertFile() string { return c.get("CERT_FILE", defaultCertFile) } // KeyFile returns the private key filename for custom SSL certificate. func (c *Config) KeyFile() string { return c.get("KEY_FILE", defaultKeyFile) } // CertDomain returns the domain to use for Let's Encrypt certificate. func (c *Config) CertDomain() string { return c.get("CERT_DOMAIN", defaultCertDomain) } // CertCache returns the directory to use for Let's Encrypt session cache. func (c *Config) CertCache() string { return c.get("CERT_CACHE", defaultCertCache) } // SessionCleanupFrequency returns the interval for session cleanup. func (c *Config) SessionCleanupFrequency() int { return c.getInt("SESSION_CLEANUP_FREQUENCY", defaultSessionCleanupFrequency) } // WorkerPoolSize returns the number of background worker. func (c *Config) WorkerPoolSize() int { return c.getInt("WORKER_POOL_SIZE", defaultWorkerPoolSize) } // PollingFrequency returns the interval to refresh feeds in the background. func (c *Config) PollingFrequency() int { return c.getInt("POLLING_FREQUENCY", defaultPollingFrequency) } // BatchSize returns the number of feeds to send for background processing. func (c *Config) BatchSize() int { return c.getInt("BATCH_SIZE", defaultBatchSize) } // IsOAuth2UserCreationAllowed returns true if user creation is allowed for OAuth2 users. func (c *Config) IsOAuth2UserCreationAllowed() bool { return c.getInt("OAUTH2_USER_CREATION", 0) == 1 } // OAuth2ClientID returns the OAuth2 Client ID. func (c *Config) OAuth2ClientID() string { return c.get("OAUTH2_CLIENT_ID", "") } // OAuth2ClientSecret returns the OAuth2 client secret. func (c *Config) OAuth2ClientSecret() string { return c.get("OAUTH2_CLIENT_SECRET", "") } // OAuth2RedirectURL returns the OAuth2 redirect URL. func (c *Config) OAuth2RedirectURL() string { return c.get("OAUTH2_REDIRECT_URL", "") } // OAuth2Provider returns the name of the OAuth2 provider configured. func (c *Config) OAuth2Provider() string { return c.get("OAUTH2_PROVIDER", "") } // HasHSTS returns true if HTTP Strict Transport Security is enabled. func (c *Config) HasHSTS() bool { return c.get("DISABLE_HSTS", "") == "" } // NewConfig returns a new Config. func NewConfig() *Config { return &Config{IsHTTPS: os.Getenv("HTTPS") != ""} }