cloudflared-mirror/ingress/config.go

495 lines
16 KiB
Go

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
}