package cmd import ( "errors" "fmt" "github.com/urfave/cli/v2" "github.com/urfave/cli/v2/altsrc" "heckel.io/ntfy/server" "heckel.io/ntfy/util" "log" "math" "net" "strings" "time" ) func init() { commands = append(commands, cmdServe) } var flagsServe = []cli.Flag{ &cli.StringFlag{Name: "config", Aliases: []string{"c"}, EnvVars: []string{"NTFY_CONFIG_FILE"}, Value: "/etc/ntfy/server.yml", DefaultText: "/etc/ntfy/server.yml", Usage: "config file"}, altsrc.NewStringFlag(&cli.StringFlag{Name: "base-url", Aliases: []string{"B"}, EnvVars: []string{"NTFY_BASE_URL"}, Usage: "externally visible base URL for this host (e.g. https://ntfy.sh)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "listen-http", Aliases: []string{"l"}, EnvVars: []string{"NTFY_LISTEN_HTTP"}, Value: server.DefaultListenHTTP, Usage: "ip:port used to as HTTP listen address"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "listen-https", Aliases: []string{"L"}, EnvVars: []string{"NTFY_LISTEN_HTTPS"}, Usage: "ip:port used to as HTTPS listen address"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "listen-unix", Aliases: []string{"U"}, EnvVars: []string{"NTFY_LISTEN_UNIX"}, Usage: "listen on unix socket path"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "key-file", Aliases: []string{"K"}, EnvVars: []string{"NTFY_KEY_FILE"}, Usage: "private key file, if listen-https is set"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "cert-file", Aliases: []string{"E"}, EnvVars: []string{"NTFY_CERT_FILE"}, Usage: "certificate file, if listen-https is set"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "firebase-key-file", Aliases: []string{"F"}, EnvVars: []string{"NTFY_FIREBASE_KEY_FILE"}, Usage: "Firebase credentials file; if set additionally publish to FCM topic"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "cache-file", Aliases: []string{"C"}, EnvVars: []string{"NTFY_CACHE_FILE"}, Usage: "cache file used for message caching"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "cache-duration", Aliases: []string{"b"}, EnvVars: []string{"NTFY_CACHE_DURATION"}, Value: server.DefaultCacheDuration, Usage: "buffer messages for this time to allow `since` requests"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "auth-file", Aliases: []string{"H"}, EnvVars: []string{"NTFY_AUTH_FILE"}, Usage: "auth database file used for access control"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "auth-default-access", Aliases: []string{"p"}, EnvVars: []string{"NTFY_AUTH_DEFAULT_ACCESS"}, Value: "read-write", Usage: "default permissions if no matching entries in the auth database are found"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "attachment-cache-dir", EnvVars: []string{"NTFY_ATTACHMENT_CACHE_DIR"}, Usage: "cache directory for attached files"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "attachment-total-size-limit", Aliases: []string{"A"}, EnvVars: []string{"NTFY_ATTACHMENT_TOTAL_SIZE_LIMIT"}, DefaultText: "5G", Usage: "limit of the on-disk attachment cache"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "attachment-file-size-limit", Aliases: []string{"Y"}, EnvVars: []string{"NTFY_ATTACHMENT_FILE_SIZE_LIMIT"}, DefaultText: "15M", Usage: "per-file attachment size limit (e.g. 300k, 2M, 100M)"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "attachment-expiry-duration", Aliases: []string{"X"}, EnvVars: []string{"NTFY_ATTACHMENT_EXPIRY_DURATION"}, Value: server.DefaultAttachmentExpiryDuration, DefaultText: "3h", Usage: "duration after which uploaded attachments will be deleted (e.g. 3h, 20h)"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "keepalive-interval", Aliases: []string{"k"}, EnvVars: []string{"NTFY_KEEPALIVE_INTERVAL"}, Value: server.DefaultKeepaliveInterval, Usage: "interval of keepalive messages"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "manager-interval", Aliases: []string{"m"}, EnvVars: []string{"NTFY_MANAGER_INTERVAL"}, Value: server.DefaultManagerInterval, Usage: "interval of for message pruning and stats printing"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "web-root", EnvVars: []string{"NTFY_WEB_ROOT"}, Value: "app", Usage: "sets web root to landing page (home) or web app (app)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-sender-addr", EnvVars: []string{"NTFY_SMTP_SENDER_ADDR"}, Usage: "SMTP server address (host:port) for outgoing emails"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-sender-user", EnvVars: []string{"NTFY_SMTP_SENDER_USER"}, Usage: "SMTP user (if e-mail sending is enabled)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-sender-pass", EnvVars: []string{"NTFY_SMTP_SENDER_PASS"}, Usage: "SMTP password (if e-mail sending is enabled)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-sender-from", EnvVars: []string{"NTFY_SMTP_SENDER_FROM"}, Usage: "SMTP sender address (if e-mail sending is enabled)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-server-listen", EnvVars: []string{"NTFY_SMTP_SERVER_LISTEN"}, Usage: "SMTP server address (ip:port) for incoming emails, e.g. :25"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-server-domain", EnvVars: []string{"NTFY_SMTP_SERVER_DOMAIN"}, Usage: "SMTP domain for incoming e-mail, e.g. ntfy.sh"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "smtp-server-addr-prefix", EnvVars: []string{"NTFY_SMTP_SERVER_ADDR_PREFIX"}, Usage: "SMTP email address prefix for topics to prevent spam (e.g. 'ntfy-')"}), altsrc.NewIntFlag(&cli.IntFlag{Name: "global-topic-limit", Aliases: []string{"T"}, EnvVars: []string{"NTFY_GLOBAL_TOPIC_LIMIT"}, Value: server.DefaultTotalTopicLimit, Usage: "total number of topics allowed"}), altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-subscription-limit", EnvVars: []string{"NTFY_VISITOR_SUBSCRIPTION_LIMIT"}, Value: server.DefaultVisitorSubscriptionLimit, Usage: "number of subscriptions per visitor"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "visitor-attachment-total-size-limit", EnvVars: []string{"NTFY_VISITOR_ATTACHMENT_TOTAL_SIZE_LIMIT"}, Value: "100M", Usage: "total storage limit used for attachments per visitor"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "visitor-attachment-daily-bandwidth-limit", EnvVars: []string{"NTFY_VISITOR_ATTACHMENT_DAILY_BANDWIDTH_LIMIT"}, Value: "500M", Usage: "total daily attachment download/upload bandwidth limit per visitor"}), altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-request-limit-burst", EnvVars: []string{"NTFY_VISITOR_REQUEST_LIMIT_BURST"}, Value: server.DefaultVisitorRequestLimitBurst, Usage: "initial limit of requests per visitor"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "visitor-request-limit-replenish", EnvVars: []string{"NTFY_VISITOR_REQUEST_LIMIT_REPLENISH"}, Value: server.DefaultVisitorRequestLimitReplenish, Usage: "interval at which burst limit is replenished (one per x)"}), altsrc.NewStringFlag(&cli.StringFlag{Name: "visitor-request-limit-exempt-hosts", EnvVars: []string{"NTFY_VISITOR_REQUEST_LIMIT_EXEMPT_HOSTS"}, Value: "", Usage: "hostnames and/or IP addresses of hosts that will be exempt from the visitor request limit"}), altsrc.NewIntFlag(&cli.IntFlag{Name: "visitor-email-limit-burst", EnvVars: []string{"NTFY_VISITOR_EMAIL_LIMIT_BURST"}, Value: server.DefaultVisitorEmailLimitBurst, Usage: "initial limit of e-mails per visitor"}), altsrc.NewDurationFlag(&cli.DurationFlag{Name: "visitor-email-limit-replenish", EnvVars: []string{"NTFY_VISITOR_EMAIL_LIMIT_REPLENISH"}, Value: server.DefaultVisitorEmailLimitReplenish, Usage: "interval at which burst limit is replenished (one per x)"}), altsrc.NewBoolFlag(&cli.BoolFlag{Name: "behind-proxy", Aliases: []string{"P"}, EnvVars: []string{"NTFY_BEHIND_PROXY"}, Value: false, Usage: "if set, use X-Forwarded-For header to determine visitor IP address (for rate limiting)"}), } var cmdServe = &cli.Command{ Name: "serve", Usage: "Run the ntfy server", UsageText: "ntfy serve [OPTIONS..]", Action: execServe, Category: categoryServer, Flags: flagsServe, Before: initConfigFileInputSource("config", flagsServe), Description: `Run the ntfy server and listen for incoming requests The command will load the configuration from /etc/ntfy/server.yml. Config options can be overridden using the command line options. Examples: ntfy serve # Starts server in the foreground (on port 80) ntfy serve --listen-http :8080 # Starts server with alternate port`, } func execServe(c *cli.Context) error { if c.NArg() > 0 { return errors.New("no arguments expected, see 'ntfy serve --help' for help") } // Read all the options baseURL := c.String("base-url") listenHTTP := c.String("listen-http") listenHTTPS := c.String("listen-https") listenUnix := c.String("listen-unix") keyFile := c.String("key-file") certFile := c.String("cert-file") firebaseKeyFile := c.String("firebase-key-file") cacheFile := c.String("cache-file") cacheDuration := c.Duration("cache-duration") authFile := c.String("auth-file") authDefaultAccess := c.String("auth-default-access") attachmentCacheDir := c.String("attachment-cache-dir") attachmentTotalSizeLimitStr := c.String("attachment-total-size-limit") attachmentFileSizeLimitStr := c.String("attachment-file-size-limit") attachmentExpiryDuration := c.Duration("attachment-expiry-duration") keepaliveInterval := c.Duration("keepalive-interval") managerInterval := c.Duration("manager-interval") webRoot := c.String("web-root") smtpSenderAddr := c.String("smtp-sender-addr") smtpSenderUser := c.String("smtp-sender-user") smtpSenderPass := c.String("smtp-sender-pass") smtpSenderFrom := c.String("smtp-sender-from") smtpServerListen := c.String("smtp-server-listen") smtpServerDomain := c.String("smtp-server-domain") smtpServerAddrPrefix := c.String("smtp-server-addr-prefix") totalTopicLimit := c.Int("global-topic-limit") visitorSubscriptionLimit := c.Int("visitor-subscription-limit") visitorAttachmentTotalSizeLimitStr := c.String("visitor-attachment-total-size-limit") visitorAttachmentDailyBandwidthLimitStr := c.String("visitor-attachment-daily-bandwidth-limit") visitorRequestLimitBurst := c.Int("visitor-request-limit-burst") visitorRequestLimitReplenish := c.Duration("visitor-request-limit-replenish") visitorRequestLimitExemptHosts := util.SplitNoEmpty(c.String("visitor-request-limit-exempt-hosts"), ",") visitorEmailLimitBurst := c.Int("visitor-email-limit-burst") visitorEmailLimitReplenish := c.Duration("visitor-email-limit-replenish") behindProxy := c.Bool("behind-proxy") // Check values if firebaseKeyFile != "" && !util.FileExists(firebaseKeyFile) { return errors.New("if set, FCM key file must exist") } else if keepaliveInterval < 5*time.Second { return errors.New("keepalive interval cannot be lower than five seconds") } else if managerInterval < 5*time.Second { return errors.New("manager interval cannot be lower than five seconds") } else if cacheDuration > 0 && cacheDuration < managerInterval { return errors.New("cache duration cannot be lower than manager interval") } else if keyFile != "" && !util.FileExists(keyFile) { return errors.New("if set, key file must exist") } else if certFile != "" && !util.FileExists(certFile) { return errors.New("if set, certificate file must exist") } else if listenHTTPS != "" && (keyFile == "" || certFile == "") { return errors.New("if listen-https is set, both key-file and cert-file must be set") } else if smtpSenderAddr != "" && (baseURL == "" || smtpSenderUser == "" || smtpSenderPass == "" || smtpSenderFrom == "") { return errors.New("if smtp-sender-addr is set, base-url, smtp-sender-user, smtp-sender-pass and smtp-sender-from must also be set") } else if smtpServerListen != "" && smtpServerDomain == "" { return errors.New("if smtp-server-listen is set, smtp-server-domain must also be set") } else if attachmentCacheDir != "" && baseURL == "" { return errors.New("if attachment-cache-dir is set, base-url must also be set") } else if baseURL != "" && !strings.HasPrefix(baseURL, "http://") && !strings.HasPrefix(baseURL, "https://") { return errors.New("if set, base-url must start with http:// or https://") } else if !util.InStringList([]string{"read-write", "read-only", "write-only", "deny-all"}, authDefaultAccess) { return errors.New("if set, auth-default-access must start set to 'read-write', 'read-only', 'write-only' or 'deny-all'") } else if !util.InStringList([]string{"app", "home"}, webRoot) { return errors.New("if set, web-root must be 'home' or 'app'") } // Default auth permissions webRootIsApp := webRoot == "app" authDefaultRead := authDefaultAccess == "read-write" || authDefaultAccess == "read-only" authDefaultWrite := authDefaultAccess == "read-write" || authDefaultAccess == "write-only" // Special case: Unset default if listenHTTP == "-" { listenHTTP = "" } // Convert sizes to bytes attachmentTotalSizeLimit, err := parseSize(attachmentTotalSizeLimitStr, server.DefaultAttachmentTotalSizeLimit) if err != nil { return err } attachmentFileSizeLimit, err := parseSize(attachmentFileSizeLimitStr, server.DefaultAttachmentFileSizeLimit) if err != nil { return err } visitorAttachmentTotalSizeLimit, err := parseSize(visitorAttachmentTotalSizeLimitStr, server.DefaultVisitorAttachmentTotalSizeLimit) if err != nil { return err } visitorAttachmentDailyBandwidthLimit, err := parseSize(visitorAttachmentDailyBandwidthLimitStr, server.DefaultVisitorAttachmentDailyBandwidthLimit) if err != nil { return err } else if visitorAttachmentDailyBandwidthLimit > math.MaxInt { return fmt.Errorf("config option visitor-attachment-daily-bandwidth-limit must be lower than %d", math.MaxInt) } // Resolve hosts visitorRequestLimitExemptIPs := make([]string, 0) for _, host := range visitorRequestLimitExemptHosts { ips, err := net.LookupIP(host) if err != nil { log.Printf("cannot resolve host %s: %s, ignoring visitor request exemption", host, err.Error()) continue } for _, ip := range ips { visitorRequestLimitExemptIPs = append(visitorRequestLimitExemptIPs, ip.String()) } } // Run server conf := server.NewConfig() conf.BaseURL = baseURL conf.ListenHTTP = listenHTTP conf.ListenHTTPS = listenHTTPS conf.ListenUnix = listenUnix conf.KeyFile = keyFile conf.CertFile = certFile conf.FirebaseKeyFile = firebaseKeyFile conf.CacheFile = cacheFile conf.CacheDuration = cacheDuration conf.AuthFile = authFile conf.AuthDefaultRead = authDefaultRead conf.AuthDefaultWrite = authDefaultWrite conf.AttachmentCacheDir = attachmentCacheDir conf.AttachmentTotalSizeLimit = attachmentTotalSizeLimit conf.AttachmentFileSizeLimit = attachmentFileSizeLimit conf.AttachmentExpiryDuration = attachmentExpiryDuration conf.KeepaliveInterval = keepaliveInterval conf.ManagerInterval = managerInterval conf.WebRootIsApp = webRootIsApp conf.SMTPSenderAddr = smtpSenderAddr conf.SMTPSenderUser = smtpSenderUser conf.SMTPSenderPass = smtpSenderPass conf.SMTPSenderFrom = smtpSenderFrom conf.SMTPServerListen = smtpServerListen conf.SMTPServerDomain = smtpServerDomain conf.SMTPServerAddrPrefix = smtpServerAddrPrefix conf.TotalTopicLimit = totalTopicLimit conf.VisitorSubscriptionLimit = visitorSubscriptionLimit conf.VisitorAttachmentTotalSizeLimit = visitorAttachmentTotalSizeLimit conf.VisitorAttachmentDailyBandwidthLimit = int(visitorAttachmentDailyBandwidthLimit) conf.VisitorRequestLimitBurst = visitorRequestLimitBurst conf.VisitorRequestLimitReplenish = visitorRequestLimitReplenish conf.VisitorRequestExemptIPAddrs = visitorRequestLimitExemptIPs conf.VisitorEmailLimitBurst = visitorEmailLimitBurst conf.VisitorEmailLimitReplenish = visitorEmailLimitReplenish conf.BehindProxy = behindProxy s, err := server.New(conf) if err != nil { log.Fatalln(err) } if err := s.Run(); err != nil { log.Fatalln(err) } log.Printf("Exiting.") return nil } func parseSize(s string, defaultValue int64) (v int64, err error) { if s == "" { return defaultValue, nil } v, err = util.ParseSize(s) if err != nil { return 0, err } return v, nil }