package ingress import ( "encoding/json" "time" "github.com/urfave/cli/v2" "github.com/cloudflare/cloudflared/config" "github.com/cloudflare/cloudflared/ipaccess" "github.com/cloudflare/cloudflared/tlsconfig" ) var ( defaultConnectTimeout = config.CustomDuration{Duration: 30 * time.Second} defaultTLSTimeout = config.CustomDuration{Duration: 10 * time.Second} defaultTCPKeepAlive = config.CustomDuration{Duration: 30 * time.Second} defaultKeepAliveTimeout = config.CustomDuration{Duration: 90 * time.Second} ) const ( defaultProxyAddress = "127.0.0.1" defaultKeepAliveConnections = 100 SSHServerFlag = "ssh-server" Socks5Flag = "socks5" ProxyConnectTimeoutFlag = "proxy-connect-timeout" ProxyTLSTimeoutFlag = "proxy-tls-timeout" ProxyTCPKeepAliveFlag = "proxy-tcp-keepalive" ProxyNoHappyEyeballsFlag = "proxy-no-happy-eyeballs" ProxyKeepAliveConnectionsFlag = "proxy-keepalive-connections" ProxyKeepAliveTimeoutFlag = "proxy-keepalive-timeout" HTTPHostHeaderFlag = "http-host-header" OriginServerNameFlag = "origin-server-name" NoTLSVerifyFlag = "no-tls-verify" NoChunkedEncodingFlag = "no-chunked-encoding" ProxyAddressFlag = "proxy-address" ProxyPortFlag = "proxy-port" Http2OriginFlag = "http2-origin" ) const ( socksProxy = "socks" ) // RemoteConfig models ingress settings that can be managed remotely, for example through the dashboard. type RemoteConfig struct { Ingress Ingress WarpRouting config.WarpRoutingConfig } type RemoteConfigJSON struct { GlobalOriginRequest *config.OriginRequestConfig `json:"originRequest,omitempty"` IngressRules []config.UnvalidatedIngressRule `json:"ingress"` WarpRouting config.WarpRoutingConfig `json:"warp-routing"` } func (rc *RemoteConfig) UnmarshalJSON(b []byte) error { var rawConfig RemoteConfigJSON if err := json.Unmarshal(b, &rawConfig); err != nil { return err } // if nil, just assume the default values. globalOriginRequestConfig := rawConfig.GlobalOriginRequest if globalOriginRequestConfig == nil { globalOriginRequestConfig = &config.OriginRequestConfig{} } ingress, err := validateIngress(rawConfig.IngressRules, originRequestFromConfig(*globalOriginRequestConfig)) if err != nil { return err } rc.Ingress = ingress rc.WarpRouting = rawConfig.WarpRouting return nil } func originRequestFromSingeRule(c *cli.Context) OriginRequestConfig { var connectTimeout config.CustomDuration = defaultConnectTimeout var tlsTimeout config.CustomDuration = defaultTLSTimeout var tcpKeepAlive config.CustomDuration = defaultTCPKeepAlive var noHappyEyeballs bool var keepAliveConnections int = defaultKeepAliveConnections var keepAliveTimeout config.CustomDuration = defaultKeepAliveTimeout var httpHostHeader string var originServerName string var caPool string var noTLSVerify bool var disableChunkedEncoding bool var bastionMode bool var proxyAddress = defaultProxyAddress var proxyPort uint var proxyType string var http2Origin bool if flag := ProxyConnectTimeoutFlag; c.IsSet(flag) { connectTimeout = config.CustomDuration{Duration: c.Duration(flag)} } if flag := ProxyTLSTimeoutFlag; c.IsSet(flag) { tlsTimeout = config.CustomDuration{Duration: c.Duration(flag)} } if flag := ProxyTCPKeepAliveFlag; c.IsSet(flag) { tcpKeepAlive = config.CustomDuration{Duration: c.Duration(flag)} } if flag := ProxyNoHappyEyeballsFlag; c.IsSet(flag) { noHappyEyeballs = c.Bool(flag) } if flag := ProxyKeepAliveConnectionsFlag; c.IsSet(flag) { keepAliveConnections = c.Int(flag) } if flag := ProxyKeepAliveTimeoutFlag; c.IsSet(flag) { keepAliveTimeout = config.CustomDuration{Duration: c.Duration(flag)} } if flag := HTTPHostHeaderFlag; c.IsSet(flag) { httpHostHeader = c.String(flag) } if flag := OriginServerNameFlag; c.IsSet(flag) { originServerName = c.String(flag) } if flag := tlsconfig.OriginCAPoolFlag; c.IsSet(flag) { caPool = c.String(flag) } if flag := NoTLSVerifyFlag; c.IsSet(flag) { noTLSVerify = c.Bool(flag) } if flag := NoChunkedEncodingFlag; c.IsSet(flag) { disableChunkedEncoding = c.Bool(flag) } if flag := config.BastionFlag; c.IsSet(flag) { bastionMode = c.Bool(flag) } if flag := ProxyAddressFlag; c.IsSet(flag) { proxyAddress = c.String(flag) } if flag := ProxyPortFlag; c.IsSet(flag) { // Note TUN-3758 , we use Int because UInt is not supported with altsrc proxyPort = uint(c.Int(flag)) } if flag := Http2OriginFlag; c.IsSet(flag) { http2Origin = c.Bool(flag) } if c.IsSet(Socks5Flag) { proxyType = socksProxy } return OriginRequestConfig{ ConnectTimeout: connectTimeout, TLSTimeout: tlsTimeout, TCPKeepAlive: tcpKeepAlive, NoHappyEyeballs: noHappyEyeballs, KeepAliveConnections: keepAliveConnections, KeepAliveTimeout: keepAliveTimeout, HTTPHostHeader: httpHostHeader, OriginServerName: originServerName, CAPool: caPool, NoTLSVerify: noTLSVerify, DisableChunkedEncoding: disableChunkedEncoding, BastionMode: bastionMode, ProxyAddress: proxyAddress, ProxyPort: proxyPort, ProxyType: proxyType, Http2Origin: http2Origin, } } func originRequestFromConfig(c config.OriginRequestConfig) OriginRequestConfig { out := OriginRequestConfig{ ConnectTimeout: defaultConnectTimeout, TLSTimeout: defaultTLSTimeout, TCPKeepAlive: defaultTCPKeepAlive, KeepAliveConnections: defaultKeepAliveConnections, KeepAliveTimeout: defaultKeepAliveTimeout, ProxyAddress: defaultProxyAddress, } if c.ConnectTimeout != nil { out.ConnectTimeout = *c.ConnectTimeout } if c.TLSTimeout != nil { out.TLSTimeout = *c.TLSTimeout } if c.TCPKeepAlive != nil { out.TCPKeepAlive = *c.TCPKeepAlive } if c.NoHappyEyeballs != nil { out.NoHappyEyeballs = *c.NoHappyEyeballs } if c.KeepAliveConnections != nil { out.KeepAliveConnections = *c.KeepAliveConnections } if c.KeepAliveTimeout != nil { out.KeepAliveTimeout = *c.KeepAliveTimeout } if c.HTTPHostHeader != nil { out.HTTPHostHeader = *c.HTTPHostHeader } if c.OriginServerName != nil { out.OriginServerName = *c.OriginServerName } if c.CAPool != nil { out.CAPool = *c.CAPool } if c.NoTLSVerify != nil { out.NoTLSVerify = *c.NoTLSVerify } if c.DisableChunkedEncoding != nil { out.DisableChunkedEncoding = *c.DisableChunkedEncoding } if c.BastionMode != nil { out.BastionMode = *c.BastionMode } if c.ProxyAddress != nil { out.ProxyAddress = *c.ProxyAddress } if c.ProxyPort != nil { out.ProxyPort = *c.ProxyPort } if c.ProxyType != nil { out.ProxyType = *c.ProxyType } if len(c.IPRules) > 0 { for _, r := range c.IPRules { rule, err := ipaccess.NewRuleByCIDR(r.Prefix, r.Ports, r.Allow) if err == nil { out.IPRules = append(out.IPRules, rule) } } } return out } // OriginRequestConfig configures how Cloudflared sends requests to origin // services. // Note: To specify a time.Duration in go-yaml, use e.g. "3s" or "24h". type OriginRequestConfig struct { // HTTP proxy timeout for establishing a new connection ConnectTimeout config.CustomDuration `yaml:"connectTimeout" json:"connectTimeout"` // HTTP proxy timeout for completing a TLS handshake TLSTimeout config.CustomDuration `yaml:"tlsTimeout" json:"tlsTimeout"` // HTTP proxy TCP keepalive duration TCPKeepAlive config.CustomDuration `yaml:"tcpKeepAlive" json:"tcpKeepAlive"` // HTTP proxy should disable "happy eyeballs" for IPv4/v6 fallback NoHappyEyeballs bool `yaml:"noHappyEyeballs" json:"noHappyEyeballs"` // HTTP proxy timeout for closing an idle connection KeepAliveTimeout config.CustomDuration `yaml:"keepAliveTimeout" json:"keepAliveTimeout"` // HTTP proxy maximum keepalive connection pool size KeepAliveConnections int `yaml:"keepAliveConnections" json:"keepAliveConnections"` // Sets the HTTP Host header for the local webserver. HTTPHostHeader string `yaml:"httpHostHeader" json:"httpHostHeader"` // Hostname on the origin server certificate. OriginServerName string `yaml:"originServerName" json:"originServerName"` // Path to the CA for the certificate of your origin. // This option should be used only if your certificate is not signed by Cloudflare. CAPool string `yaml:"caPool" json:"caPool"` // Disables TLS verification of the certificate presented by your origin. // Will allow any certificate from the origin to be accepted. // Note: The connection from your machine to Cloudflare's Edge is still encrypted. NoTLSVerify bool `yaml:"noTLSVerify" json:"noTLSVerify"` // Disables chunked transfer encoding. // Useful if you are running a WSGI server. DisableChunkedEncoding bool `yaml:"disableChunkedEncoding" json:"disableChunkedEncoding"` // Runs as jump host BastionMode bool `yaml:"bastionMode" json:"bastionMode"` // Listen address for the proxy. ProxyAddress string `yaml:"proxyAddress" json:"proxyAddress"` // Listen port for the proxy. ProxyPort uint `yaml:"proxyPort" json:"proxyPort"` // What sort of proxy should be started ProxyType string `yaml:"proxyType" json:"proxyType"` // IP rules for the proxy service IPRules []ipaccess.Rule `yaml:"ipRules" json:"ipRules"` // Attempt to connect to origin with HTTP/2 Http2Origin bool `yaml:"http2Origin" json:"http2Origin"` } func (defaults *OriginRequestConfig) setConnectTimeout(overrides config.OriginRequestConfig) { if val := overrides.ConnectTimeout; val != nil { defaults.ConnectTimeout = *val } } func (defaults *OriginRequestConfig) setTLSTimeout(overrides config.OriginRequestConfig) { if val := overrides.TLSTimeout; val != nil { defaults.TLSTimeout = *val } } func (defaults *OriginRequestConfig) setNoHappyEyeballs(overrides config.OriginRequestConfig) { if val := overrides.NoHappyEyeballs; val != nil { defaults.NoHappyEyeballs = *val } } func (defaults *OriginRequestConfig) setKeepAliveConnections(overrides config.OriginRequestConfig) { if val := overrides.KeepAliveConnections; val != nil { defaults.KeepAliveConnections = *val } } func (defaults *OriginRequestConfig) setKeepAliveTimeout(overrides config.OriginRequestConfig) { if val := overrides.KeepAliveTimeout; val != nil { defaults.KeepAliveTimeout = *val } } func (defaults *OriginRequestConfig) setTCPKeepAlive(overrides config.OriginRequestConfig) { if val := overrides.TCPKeepAlive; val != nil { defaults.TCPKeepAlive = *val } } func (defaults *OriginRequestConfig) setHTTPHostHeader(overrides config.OriginRequestConfig) { if val := overrides.HTTPHostHeader; val != nil { defaults.HTTPHostHeader = *val } } func (defaults *OriginRequestConfig) setOriginServerName(overrides config.OriginRequestConfig) { if val := overrides.OriginServerName; val != nil { defaults.OriginServerName = *val } } func (defaults *OriginRequestConfig) setCAPool(overrides config.OriginRequestConfig) { if val := overrides.CAPool; val != nil { defaults.CAPool = *val } } func (defaults *OriginRequestConfig) setNoTLSVerify(overrides config.OriginRequestConfig) { if val := overrides.NoTLSVerify; val != nil { defaults.NoTLSVerify = *val } } func (defaults *OriginRequestConfig) setDisableChunkedEncoding(overrides config.OriginRequestConfig) { if val := overrides.DisableChunkedEncoding; val != nil { defaults.DisableChunkedEncoding = *val } } func (defaults *OriginRequestConfig) setBastionMode(overrides config.OriginRequestConfig) { if val := overrides.BastionMode; val != nil { defaults.BastionMode = *val } } func (defaults *OriginRequestConfig) setProxyPort(overrides config.OriginRequestConfig) { if val := overrides.ProxyPort; val != nil { defaults.ProxyPort = *val } } func (defaults *OriginRequestConfig) setProxyAddress(overrides config.OriginRequestConfig) { if val := overrides.ProxyAddress; val != nil { defaults.ProxyAddress = *val } } func (defaults *OriginRequestConfig) setProxyType(overrides config.OriginRequestConfig) { if val := overrides.ProxyType; val != nil { defaults.ProxyType = *val } } func (defaults *OriginRequestConfig) setIPRules(overrides config.OriginRequestConfig) { if val := overrides.IPRules; len(val) > 0 { ipAccessRule := make([]ipaccess.Rule, len(overrides.IPRules)) for i, r := range overrides.IPRules { rule, err := ipaccess.NewRuleByCIDR(r.Prefix, r.Ports, r.Allow) if err == nil { ipAccessRule[i] = rule } } defaults.IPRules = ipAccessRule } } // SetConfig gets config for the requests that cloudflared sends to origins. // Each field has a setter method which sets a value for the field by trying to find: // 1. The user config for this rule // 2. The user config for the overall ingress config // 3. Defaults chosen by the cloudflared team // 4. Golang zero values for that type // If an earlier option isn't set, it will try the next option down. func setConfig(defaults OriginRequestConfig, overrides config.OriginRequestConfig) OriginRequestConfig { cfg := defaults cfg.setConnectTimeout(overrides) cfg.setTLSTimeout(overrides) cfg.setNoHappyEyeballs(overrides) cfg.setKeepAliveConnections(overrides) cfg.setKeepAliveTimeout(overrides) cfg.setTCPKeepAlive(overrides) cfg.setHTTPHostHeader(overrides) cfg.setOriginServerName(overrides) cfg.setCAPool(overrides) cfg.setNoTLSVerify(overrides) cfg.setDisableChunkedEncoding(overrides) cfg.setBastionMode(overrides) cfg.setProxyPort(overrides) cfg.setProxyAddress(overrides) cfg.setProxyType(overrides) cfg.setIPRules(overrides) return cfg } func ConvertToRawOriginConfig(c OriginRequestConfig) config.OriginRequestConfig { var connectTimeout *config.CustomDuration var tlsTimeout *config.CustomDuration var tcpKeepAlive *config.CustomDuration var keepAliveConnections *int var keepAliveTimeout *config.CustomDuration var proxyAddress *string if c.ConnectTimeout != defaultConnectTimeout { connectTimeout = &c.ConnectTimeout } if c.TLSTimeout != defaultTLSTimeout { tlsTimeout = &c.TLSTimeout } if c.TCPKeepAlive != defaultTCPKeepAlive { tcpKeepAlive = &c.TCPKeepAlive } if c.KeepAliveConnections != defaultKeepAliveConnections { keepAliveConnections = &c.KeepAliveConnections } if c.KeepAliveTimeout != defaultKeepAliveTimeout { keepAliveTimeout = &c.KeepAliveTimeout } if c.ProxyAddress != defaultProxyAddress { proxyAddress = &c.ProxyAddress } return config.OriginRequestConfig{ ConnectTimeout: connectTimeout, TLSTimeout: tlsTimeout, TCPKeepAlive: tcpKeepAlive, NoHappyEyeballs: defaultBoolToNil(c.NoHappyEyeballs), KeepAliveConnections: keepAliveConnections, KeepAliveTimeout: keepAliveTimeout, HTTPHostHeader: emptyStringToNil(c.HTTPHostHeader), OriginServerName: emptyStringToNil(c.OriginServerName), CAPool: emptyStringToNil(c.CAPool), NoTLSVerify: defaultBoolToNil(c.NoTLSVerify), DisableChunkedEncoding: defaultBoolToNil(c.DisableChunkedEncoding), BastionMode: defaultBoolToNil(c.BastionMode), ProxyAddress: proxyAddress, ProxyPort: zeroUIntToNil(c.ProxyPort), ProxyType: emptyStringToNil(c.ProxyType), IPRules: convertToRawIPRules(c.IPRules), } } func convertToRawIPRules(ipRules []ipaccess.Rule) []config.IngressIPRule { result := make([]config.IngressIPRule, 0) for _, r := range ipRules { cidr := r.StringCIDR() newRule := config.IngressIPRule{ Prefix: &cidr, Ports: r.Ports(), Allow: r.RulePolicy(), } result = append(result, newRule) } return result } func defaultBoolToNil(b bool) *bool { if b == false { return nil } return &b } func emptyStringToNil(s string) *string { if s == "" { return nil } return &s } func zeroUIntToNil(v uint) *uint { if v == 0 { return nil } return &v }