cloudflared-mirror/cmd/cloudflared/config/model.go

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package config
import (
"crypto/md5"
"fmt"
"io"
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"strings"
)
// Forwarder represents a client side listener to forward traffic to the edge
type Forwarder struct {
URL string `json:"url"`
Listener string `json:"listener"`
}
// Tunnel represents a tunnel that should be started
type Tunnel struct {
URL string `json:"url"`
Origin string `json:"origin"`
ProtocolType string `json:"type"`
}
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// DNSResolver represents a client side DNS resolver
type DNSResolver struct {
Enabled bool `json:"enabled"`
Address string `json:"address"`
Port uint16 `json:"port"`
Upstreams []string `json:"upstreams"`
Bootstraps []string `json:"bootstraps"`
}
// Root is the base options to configure the service
type Root struct {
OrgKey string `json:"org_key"`
ConfigType string `json:"type"`
CheckinInterval int `json:"checkin_interval"`
Forwarders []Forwarder `json:"forwarders,omitempty"`
Tunnels []Tunnel `json:"tunnels,omitempty"`
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Resolver DNSResolver `json:"resolver"`
}
// Hash returns the computed values to see if the forwarder values change
func (f *Forwarder) Hash() string {
h := md5.New()
io.WriteString(h, f.URL)
io.WriteString(h, f.Listener)
return fmt.Sprintf("%x", h.Sum(nil))
}
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// Hash returns the computed values to see if the forwarder values change
func (r *DNSResolver) Hash() string {
h := md5.New()
io.WriteString(h, r.Address)
io.WriteString(h, strings.Join(r.Bootstraps, ","))
io.WriteString(h, strings.Join(r.Upstreams, ","))
io.WriteString(h, fmt.Sprintf("%d", r.Port))
io.WriteString(h, fmt.Sprintf("%v", r.Enabled))
return fmt.Sprintf("%x", h.Sum(nil))
}
// EnabledOrDefault returns the enabled property
func (r *DNSResolver) EnabledOrDefault() bool {
return r.Enabled
}
// AddressOrDefault returns the address or returns the default if empty
func (r *DNSResolver) AddressOrDefault() string {
if r.Address != "" {
return r.Address
}
return "localhost"
}
// PortOrDefault return the port or returns the default if 0
func (r *DNSResolver) PortOrDefault() uint16 {
if r.Port > 0 {
return r.Port
}
return 53
}
// UpstreamsOrDefault returns the upstreams or returns the default if empty
func (r *DNSResolver) UpstreamsOrDefault() []string {
if len(r.Upstreams) > 0 {
return r.Upstreams
}
return []string{"https://1.1.1.1/dns-query", "https://1.0.0.1/dns-query"}
}
// BootstrapsOrDefault returns the bootstraps or returns the default if empty
func (r *DNSResolver) BootstrapsOrDefault() []string {
if len(r.Bootstraps) > 0 {
return r.Bootstraps
}
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"}
}