114 lines
3.7 KiB
Go
114 lines
3.7 KiB
Go
package config
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import (
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"crypto/md5"
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"fmt"
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"io"
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"strings"
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"github.com/cloudflare/cloudflared/tunneldns"
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)
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// Forwarder represents a client side listener to forward traffic to the edge
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type Forwarder struct {
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URL string `json:"url"`
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Listener string `json:"listener"`
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TokenClientID string `json:"service_token_id" yaml:"serviceTokenID"`
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TokenSecret string `json:"secret_token_id" yaml:"serviceTokenSecret"`
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Destination string `json:"destination"`
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}
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// Tunnel represents a tunnel that should be started
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type Tunnel struct {
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URL string `json:"url"`
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Origin string `json:"origin"`
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ProtocolType string `json:"type"`
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}
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// DNSResolver represents a client side DNS resolver
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type DNSResolver struct {
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Enabled bool `json:"enabled"`
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Address string `json:"address,omitempty"`
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Port uint16 `json:"port,omitempty"`
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Upstreams []string `json:"upstreams,omitempty"`
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Bootstraps []string `json:"bootstraps,omitempty"`
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MaxUpstreamConnections int `json:"max_upstream_connections,omitempty"`
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}
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// Root is the base options to configure the service
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type Root struct {
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LogDirectory string `json:"log_directory" yaml:"logDirectory,omitempty"`
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LogLevel string `json:"log_level" yaml:"logLevel,omitempty"`
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Forwarders []Forwarder `json:"forwarders,omitempty" yaml:"forwarders,omitempty"`
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Tunnels []Tunnel `json:"tunnels,omitempty" yaml:"tunnels,omitempty"`
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Resolver DNSResolver `json:"resolver,omitempty" yaml:"resolver,omitempty"`
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}
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// Hash returns the computed values to see if the forwarder values change
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func (f *Forwarder) Hash() string {
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h := md5.New()
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io.WriteString(h, f.URL)
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io.WriteString(h, f.Listener)
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io.WriteString(h, f.TokenClientID)
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io.WriteString(h, f.TokenSecret)
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io.WriteString(h, f.Destination)
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return fmt.Sprintf("%x", h.Sum(nil))
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}
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// Hash returns the computed values to see if the forwarder values change
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func (r *DNSResolver) Hash() string {
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h := md5.New()
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io.WriteString(h, r.Address)
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io.WriteString(h, strings.Join(r.Bootstraps, ","))
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io.WriteString(h, strings.Join(r.Upstreams, ","))
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io.WriteString(h, fmt.Sprintf("%d", r.Port))
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io.WriteString(h, fmt.Sprintf("%d", r.MaxUpstreamConnections))
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io.WriteString(h, fmt.Sprintf("%v", r.Enabled))
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return fmt.Sprintf("%x", h.Sum(nil))
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}
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// EnabledOrDefault returns the enabled property
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func (r *DNSResolver) EnabledOrDefault() bool {
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return r.Enabled
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}
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// AddressOrDefault returns the address or returns the default if empty
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func (r *DNSResolver) AddressOrDefault() string {
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if r.Address != "" {
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return r.Address
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}
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return "localhost"
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}
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// PortOrDefault return the port or returns the default if 0
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func (r *DNSResolver) PortOrDefault() uint16 {
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if r.Port > 0 {
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return r.Port
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}
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return 53
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}
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// UpstreamsOrDefault returns the upstreams or returns the default if empty
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func (r *DNSResolver) UpstreamsOrDefault() []string {
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if len(r.Upstreams) > 0 {
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return r.Upstreams
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}
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return []string{"https://1.1.1.1/dns-query", "https://1.0.0.1/dns-query"}
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}
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// BootstrapsOrDefault returns the bootstraps or returns the default if empty
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func (r *DNSResolver) BootstrapsOrDefault() []string {
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if len(r.Bootstraps) > 0 {
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return r.Bootstraps
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}
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return []string{"https://162.159.36.1/dns-query", "https://162.159.46.1/dns-query", "https://[2606:4700:4700::1111]/dns-query", "https://[2606:4700:4700::1001]/dns-query"}
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}
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// MaxUpstreamConnectionsOrDefault return the max upstream connections or returns the default if negative
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func (r *DNSResolver) MaxUpstreamConnectionsOrDefault() int {
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if r.MaxUpstreamConnections >= 0 {
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return r.MaxUpstreamConnections
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}
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return tunneldns.MaxUpstreamConnsDefault
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}
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