package server import ( "crypto/tls" "fmt" "io/ioutil" "os" "regexp" "strings" "time" "github.com/containous/flaeg" "github.com/containous/traefik/acme" "github.com/containous/traefik/middlewares/accesslog" "github.com/containous/traefik/provider/boltdb" "github.com/containous/traefik/provider/consul" "github.com/containous/traefik/provider/docker" "github.com/containous/traefik/provider/dynamodb" "github.com/containous/traefik/provider/ecs" "github.com/containous/traefik/provider/etcd" "github.com/containous/traefik/provider/eureka" "github.com/containous/traefik/provider/file" "github.com/containous/traefik/provider/kubernetes" "github.com/containous/traefik/provider/marathon" "github.com/containous/traefik/provider/mesos" "github.com/containous/traefik/provider/rancher" "github.com/containous/traefik/provider/zk" "github.com/containous/traefik/types" ) // DefaultHealthCheckInterval is the default health check interval. const DefaultHealthCheckInterval = 30 * time.Second // TraefikConfiguration holds GlobalConfiguration and other stuff type TraefikConfiguration struct { GlobalConfiguration `mapstructure:",squash"` ConfigFile string `short:"c" description:"Configuration file to use (TOML)."` } // GlobalConfiguration holds global configuration (with providers, etc.). // It's populated from the traefik configuration file passed as an argument to the binary. type GlobalConfiguration struct { GraceTimeOut flaeg.Duration `short:"g" description:"Duration to give active requests a chance to finish before Traefik stops"` Debug bool `short:"d" description:"Enable debug mode"` CheckNewVersion bool `description:"Periodically check if a new version has been released"` AccessLogsFile string `description:"(Deprecated) Access logs file"` // Deprecated AccessLog *types.AccessLog `description:"Access log settings"` TraefikLogsFile string `description:"Traefik logs file. Stdout is used when omitted or empty"` LogLevel string `short:"l" description:"Log level"` EntryPoints EntryPoints `description:"Entrypoints definition using format: --entryPoints='Name:http Address::8000 Redirect.EntryPoint:https' --entryPoints='Name:https Address::4442 TLS:tests/traefik.crt,tests/traefik.key;prod/traefik.crt,prod/traefik.key'"` Cluster *types.Cluster `description:"Enable clustering"` Constraints types.Constraints `description:"Filter services by constraint, matching with service tags"` ACME *acme.ACME `description:"Enable ACME (Let's Encrypt): automatic SSL"` DefaultEntryPoints DefaultEntryPoints `description:"Entrypoints to be used by frontends that do not specify any entrypoint"` ProvidersThrottleDuration flaeg.Duration `description:"Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time."` MaxIdleConnsPerHost int `description:"If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used"` IdleTimeout flaeg.Duration `description:"maximum amount of time an idle (keep-alive) connection will remain idle before closing itself."` InsecureSkipVerify bool `description:"Disable SSL certificate verification"` RootCAs RootCAs `description:"Add cert file for self-signed certicate"` Retry *Retry `description:"Enable retry sending request if network error"` HealthCheck *HealthCheckConfig `description:"Health check parameters"` Docker *docker.Provider `description:"Enable Docker backend with default settings"` File *file.Provider `description:"Enable File backend with default settings"` Web *WebProvider `description:"Enable Web backend with default settings"` Marathon *marathon.Provider `description:"Enable Marathon backend with default settings"` Consul *consul.Provider `description:"Enable Consul backend with default settings"` ConsulCatalog *consul.CatalogProvider `description:"Enable Consul catalog backend with default settings"` Etcd *etcd.Provider `description:"Enable Etcd backend with default settings"` Zookeeper *zk.Provider `description:"Enable Zookeeper backend with default settings"` Boltdb *boltdb.Provider `description:"Enable Boltdb backend with default settings"` Kubernetes *kubernetes.Provider `description:"Enable Kubernetes backend with default settings"` Mesos *mesos.Provider `description:"Enable Mesos backend with default settings"` Eureka *eureka.Provider `description:"Enable Eureka backend with default settings"` ECS *ecs.Provider `description:"Enable ECS backend with default settings"` Rancher *rancher.Provider `description:"Enable Rancher backend with default settings"` DynamoDB *dynamodb.Provider `description:"Enable DynamoDB backend with default settings"` } // DefaultEntryPoints holds default entry points type DefaultEntryPoints []string // String is the method to format the flag's value, part of the flag.Value interface. // The String method's output will be used in diagnostics. func (dep *DefaultEntryPoints) String() string { return strings.Join(*dep, ",") } // Set is the method to set the flag value, part of the flag.Value interface. // Set's argument is a string to be parsed to set the flag. // It's a comma-separated list, so we split it. func (dep *DefaultEntryPoints) Set(value string) error { entrypoints := strings.Split(value, ",") if len(entrypoints) == 0 { return fmt.Errorf("bad DefaultEntryPoints format: %s", value) } for _, entrypoint := range entrypoints { *dep = append(*dep, entrypoint) } return nil } // Get return the EntryPoints map func (dep *DefaultEntryPoints) Get() interface{} { return DefaultEntryPoints(*dep) } // SetValue sets the EntryPoints map with val func (dep *DefaultEntryPoints) SetValue(val interface{}) { *dep = DefaultEntryPoints(val.(DefaultEntryPoints)) } // Type is type of the struct func (dep *DefaultEntryPoints) Type() string { return "defaultentrypoints" } // RootCAs hold the CA we want to have in root type RootCAs []FileOrContent // FileOrContent hold a file path or content type FileOrContent string func (f FileOrContent) String() string { return string(f) } func (f FileOrContent) Read() ([]byte, error) { var content []byte if _, err := os.Stat(f.String()); err == nil { content, err = ioutil.ReadFile(f.String()) if err != nil { return nil, err } } else { content = []byte(f) } return content, nil } // String is the method to format the flag's value, part of the flag.Value interface. // The String method's output will be used in diagnostics. func (r *RootCAs) String() string { sliceOfString := make([]string, len([]FileOrContent(*r))) for key, value := range *r { sliceOfString[key] = value.String() } return strings.Join(sliceOfString, ",") } // Set is the method to set the flag value, part of the flag.Value interface. // Set's argument is a string to be parsed to set the flag. // It's a comma-separated list, so we split it. func (r *RootCAs) Set(value string) error { rootCAs := strings.Split(value, ",") if len(rootCAs) == 0 { return fmt.Errorf("bad RootCAs format: %s", value) } for _, rootCA := range rootCAs { *r = append(*r, FileOrContent(rootCA)) } return nil } // Get return the EntryPoints map func (r *RootCAs) Get() interface{} { return RootCAs(*r) } // SetValue sets the EntryPoints map with val func (r *RootCAs) SetValue(val interface{}) { *r = RootCAs(val.(RootCAs)) } // Type is type of the struct func (r *RootCAs) Type() string { return "rootcas" } // EntryPoints holds entry points configuration of the reverse proxy (ip, port, TLS...) type EntryPoints map[string]*EntryPoint // String is the method to format the flag's value, part of the flag.Value interface. // The String method's output will be used in diagnostics. func (ep *EntryPoints) String() string { return fmt.Sprintf("%+v", *ep) } // Set is the method to set the flag value, part of the flag.Value interface. // Set's argument is a string to be parsed to set the flag. // It's a comma-separated list, so we split it. func (ep *EntryPoints) Set(value string) error { regex := regexp.MustCompile(`(?:Name:(?P\S*))\s*(?:Address:(?P
\S*))?\s*(?:TLS:(?P\S*))?\s*((?PTLS))?\s*(?:CA:(?P\S*))?\s*(?:Redirect.EntryPoint:(?P\S*))?\s*(?:Redirect.Regex:(?P\\S*))?\s*(?:Redirect.Replacement:(?P\S*))?\s*(?:Compress:(?P\S*))?\s*(?:WhiteListSourceRange:(?P\S*))?`) match := regex.FindAllStringSubmatch(value, -1) if match == nil { return fmt.Errorf("bad EntryPoints format: %s", value) } matchResult := match[0] result := make(map[string]string) for i, name := range regex.SubexpNames() { if i != 0 { result[name] = matchResult[i] } } var tls *TLS if len(result["TLS"]) > 0 { certs := Certificates{} if err := certs.Set(result["TLS"]); err != nil { return err } tls = &TLS{ Certificates: certs, } } else if len(result["TLSACME"]) > 0 { tls = &TLS{ Certificates: Certificates{}, } } if len(result["CA"]) > 0 { files := strings.Split(result["CA"], ",") tls.ClientCAFiles = files } var redirect *Redirect if len(result["RedirectEntryPoint"]) > 0 || len(result["RedirectRegex"]) > 0 || len(result["RedirectReplacement"]) > 0 { redirect = &Redirect{ EntryPoint: result["RedirectEntryPoint"], Regex: result["RedirectRegex"], Replacement: result["RedirectReplacement"], } } compress := false if len(result["Compress"]) > 0 { compress = strings.EqualFold(result["Compress"], "enable") || strings.EqualFold(result["Compress"], "on") } whiteListSourceRange := []string{} if len(result["WhiteListSourceRange"]) > 0 { whiteListSourceRange = strings.Split(result["WhiteListSourceRange"], ",") } (*ep)[result["Name"]] = &EntryPoint{ Address: result["Address"], TLS: tls, Redirect: redirect, Compress: compress, WhitelistSourceRange: whiteListSourceRange, } return nil } // Get return the EntryPoints map func (ep *EntryPoints) Get() interface{} { return EntryPoints(*ep) } // SetValue sets the EntryPoints map with val func (ep *EntryPoints) SetValue(val interface{}) { *ep = EntryPoints(val.(EntryPoints)) } // Type is type of the struct func (ep *EntryPoints) Type() string { return "entrypoints" } // EntryPoint holds an entry point configuration of the reverse proxy (ip, port, TLS...) type EntryPoint struct { Network string Address string TLS *TLS Redirect *Redirect Auth *types.Auth WhitelistSourceRange []string Compress bool } // Redirect configures a redirection of an entry point to another, or to an URL type Redirect struct { EntryPoint string Regex string Replacement string } // TLS configures TLS for an entry point type TLS struct { MinVersion string CipherSuites []string Certificates Certificates ClientCAFiles []string } // Map of allowed TLS minimum versions var minVersion = map[string]uint16{ `VersionTLS10`: tls.VersionTLS10, `VersionTLS11`: tls.VersionTLS11, `VersionTLS12`: tls.VersionTLS12, } // Map of TLS CipherSuites from crypto/tls // Available CipherSuites defined at https://golang.org/pkg/crypto/tls/#pkg-constants var cipherSuites = map[string]uint16{ `TLS_RSA_WITH_RC4_128_SHA`: tls.TLS_RSA_WITH_RC4_128_SHA, `TLS_RSA_WITH_3DES_EDE_CBC_SHA`: tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA, `TLS_RSA_WITH_AES_128_CBC_SHA`: tls.TLS_RSA_WITH_AES_128_CBC_SHA, `TLS_RSA_WITH_AES_256_CBC_SHA`: tls.TLS_RSA_WITH_AES_256_CBC_SHA, `TLS_RSA_WITH_AES_128_CBC_SHA256`: tls.TLS_RSA_WITH_AES_128_CBC_SHA256, `TLS_RSA_WITH_AES_128_GCM_SHA256`: tls.TLS_RSA_WITH_AES_128_GCM_SHA256, `TLS_RSA_WITH_AES_256_GCM_SHA384`: tls.TLS_RSA_WITH_AES_256_GCM_SHA384, `TLS_ECDHE_ECDSA_WITH_RC4_128_SHA`: tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, `TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA`: tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, `TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA`: tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, `TLS_ECDHE_RSA_WITH_RC4_128_SHA`: tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA, `TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA`: tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, `TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA`: tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, `TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA`: tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, `TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256`: tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, `TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256`: tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, `TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256`: tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, `TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256`: tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, `TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384`: tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, `TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384`: tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, `TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305`: tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, `TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305`: tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, } // Certificates defines traefik certificates type // Certs and Keys could be either a file path, or the file content itself type Certificates []Certificate //CreateTLSConfig creates a TLS config from Certificate structures func (certs *Certificates) CreateTLSConfig() (*tls.Config, error) { config := &tls.Config{} config.Certificates = []tls.Certificate{} certsSlice := []Certificate(*certs) for _, v := range certsSlice { cert := tls.Certificate{} var err error certContent, err := v.CertFile.Read() if err != nil { return nil, err } keyContent, err := v.KeyFile.Read() if err != nil { return nil, err } cert, err = tls.X509KeyPair(certContent, keyContent) if err != nil { return nil, err } config.Certificates = append(config.Certificates, cert) } return config, nil } // String is the method to format the flag's value, part of the flag.Value interface. // The String method's output will be used in diagnostics. func (certs *Certificates) String() string { if len(*certs) == 0 { return "" } var result []string for _, certificate := range *certs { result = append(result, certificate.CertFile.String()+","+certificate.KeyFile.String()) } return strings.Join(result, ";") } // Set is the method to set the flag value, part of the flag.Value interface. // Set's argument is a string to be parsed to set the flag. // It's a comma-separated list, so we split it. func (certs *Certificates) Set(value string) error { certificates := strings.Split(value, ";") for _, certificate := range certificates { files := strings.Split(certificate, ",") if len(files) != 2 { return fmt.Errorf("bad certificates format: %s", value) } *certs = append(*certs, Certificate{ CertFile: FileOrContent(files[0]), KeyFile: FileOrContent(files[1]), }) } return nil } // Type is type of the struct func (certs *Certificates) Type() string { return "certificates" } // Certificate holds a SSL cert/key pair // Certs and Key could be either a file path, or the file content itself type Certificate struct { CertFile FileOrContent KeyFile FileOrContent } // Retry contains request retry config type Retry struct { Attempts int `description:"Number of attempts"` } // HealthCheckConfig contains health check configuration parameters. type HealthCheckConfig struct { Interval flaeg.Duration `description:"Default periodicity of enabled health checks"` } // NewTraefikDefaultPointersConfiguration creates a TraefikConfiguration with pointers default values func NewTraefikDefaultPointersConfiguration() *TraefikConfiguration { //default Docker var defaultDocker docker.Provider defaultDocker.Watch = true defaultDocker.ExposedByDefault = true defaultDocker.Endpoint = "unix:///var/run/docker.sock" defaultDocker.SwarmMode = false // default File var defaultFile file.Provider defaultFile.Watch = true defaultFile.Filename = "" //needs equivalent to viper.ConfigFileUsed() // default Web var defaultWeb WebProvider defaultWeb.Address = ":8080" defaultWeb.Statistics = &types.Statistics{ RecentErrors: 10, } // default Metrics defaultWeb.Metrics = &types.Metrics{ Prometheus: &types.Prometheus{ Buckets: types.Buckets{0.1, 0.3, 1.2, 5}, }, Datadog: &types.Datadog{ Address: "localhost:8125", PushInterval: "10s", }, StatsD: &types.Statsd{ Address: "localhost:8125", PushInterval: "10s", }, } // default Marathon var defaultMarathon marathon.Provider defaultMarathon.Watch = true defaultMarathon.Endpoint = "http://127.0.0.1:8080" defaultMarathon.ExposedByDefault = true defaultMarathon.Constraints = types.Constraints{} defaultMarathon.DialerTimeout = flaeg.Duration(60 * time.Second) defaultMarathon.KeepAlive = flaeg.Duration(10 * time.Second) // default Consul var defaultConsul consul.Provider defaultConsul.Watch = true defaultConsul.Endpoint = "127.0.0.1:8500" defaultConsul.Prefix = "traefik" defaultConsul.Constraints = types.Constraints{} // default CatalogProvider var defaultConsulCatalog consul.CatalogProvider defaultConsulCatalog.Endpoint = "127.0.0.1:8500" defaultConsulCatalog.Constraints = types.Constraints{} defaultConsulCatalog.Prefix = "traefik" defaultConsulCatalog.FrontEndRule = "Host:{{.ServiceName}}.{{.Domain}}" // default Etcd var defaultEtcd etcd.Provider defaultEtcd.Watch = true defaultEtcd.Endpoint = "127.0.0.1:2379" defaultEtcd.Prefix = "/traefik" defaultEtcd.Constraints = types.Constraints{} //default Zookeeper var defaultZookeeper zk.Provider defaultZookeeper.Watch = true defaultZookeeper.Endpoint = "127.0.0.1:2181" defaultZookeeper.Prefix = "/traefik" defaultZookeeper.Constraints = types.Constraints{} //default Boltdb var defaultBoltDb boltdb.Provider defaultBoltDb.Watch = true defaultBoltDb.Endpoint = "127.0.0.1:4001" defaultBoltDb.Prefix = "/traefik" defaultBoltDb.Constraints = types.Constraints{} //default Kubernetes var defaultKubernetes kubernetes.Provider defaultKubernetes.Watch = true defaultKubernetes.Endpoint = "" defaultKubernetes.LabelSelector = "" defaultKubernetes.Constraints = types.Constraints{} // default Mesos var defaultMesos mesos.Provider defaultMesos.Watch = true defaultMesos.Endpoint = "http://127.0.0.1:5050" defaultMesos.ExposedByDefault = true defaultMesos.Constraints = types.Constraints{} defaultMesos.RefreshSeconds = 30 defaultMesos.ZkDetectionTimeout = 30 defaultMesos.StateTimeoutSecond = 30 //default ECS var defaultECS ecs.Provider defaultECS.Watch = true defaultECS.ExposedByDefault = true defaultECS.RefreshSeconds = 15 defaultECS.Cluster = "default" defaultECS.Constraints = types.Constraints{} //default Rancher var defaultRancher rancher.Provider defaultRancher.Watch = true defaultRancher.ExposedByDefault = true defaultRancher.RefreshSeconds = 15 // default DynamoDB var defaultDynamoDB dynamodb.Provider defaultDynamoDB.Constraints = types.Constraints{} defaultDynamoDB.RefreshSeconds = 15 defaultDynamoDB.TableName = "traefik" defaultDynamoDB.Watch = true // default AccessLog defaultAccessLog := types.AccessLog{ Format: accesslog.CommonFormat, FilePath: "", } defaultConfiguration := GlobalConfiguration{ Docker: &defaultDocker, File: &defaultFile, Web: &defaultWeb, Marathon: &defaultMarathon, Consul: &defaultConsul, ConsulCatalog: &defaultConsulCatalog, Etcd: &defaultEtcd, Zookeeper: &defaultZookeeper, Boltdb: &defaultBoltDb, Kubernetes: &defaultKubernetes, Mesos: &defaultMesos, ECS: &defaultECS, Rancher: &defaultRancher, DynamoDB: &defaultDynamoDB, Retry: &Retry{}, HealthCheck: &HealthCheckConfig{}, AccessLog: &defaultAccessLog, } return &TraefikConfiguration{ GlobalConfiguration: defaultConfiguration, } } // NewTraefikConfiguration creates a TraefikConfiguration with default values func NewTraefikConfiguration() *TraefikConfiguration { return &TraefikConfiguration{ GlobalConfiguration: GlobalConfiguration{ GraceTimeOut: flaeg.Duration(10 * time.Second), AccessLogsFile: "", TraefikLogsFile: "", LogLevel: "ERROR", EntryPoints: map[string]*EntryPoint{}, Constraints: types.Constraints{}, DefaultEntryPoints: []string{}, ProvidersThrottleDuration: flaeg.Duration(2 * time.Second), MaxIdleConnsPerHost: 200, IdleTimeout: flaeg.Duration(180 * time.Second), HealthCheck: &HealthCheckConfig{ Interval: flaeg.Duration(DefaultHealthCheckInterval), }, CheckNewVersion: true, }, ConfigFile: "", } } type configs map[string]*types.Configuration