mirror of
https://github.com/juanfont/headscale.git
synced 2025-10-31 16:11:03 +01:00
102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
package headscale
|
|
|
|
import (
|
|
"encoding/json"
|
|
"strings"
|
|
|
|
"github.com/tailscale/hujson"
|
|
"gopkg.in/yaml.v3"
|
|
"inet.af/netaddr"
|
|
)
|
|
|
|
// ACLPolicy represents a Tailscale ACL Policy.
|
|
type ACLPolicy struct {
|
|
Groups Groups `json:"Groups" yaml:"Groups"`
|
|
Hosts Hosts `json:"Hosts" yaml:"Hosts"`
|
|
TagOwners TagOwners `json:"TagOwners" yaml:"TagOwners"`
|
|
ACLs []ACL `json:"ACLs" yaml:"ACLs"`
|
|
Tests []ACLTest `json:"Tests" yaml:"Tests"`
|
|
}
|
|
|
|
// ACL is a basic rule for the ACL Policy.
|
|
type ACL struct {
|
|
Action string `json:"Action" yaml:"Action"`
|
|
Users []string `json:"Users" yaml:"Users"`
|
|
Ports []string `json:"Ports" yaml:"Ports"`
|
|
}
|
|
|
|
// Groups references a series of alias in the ACL rules.
|
|
type Groups map[string][]string
|
|
|
|
// Hosts are alias for IP addresses or subnets.
|
|
type Hosts map[string]netaddr.IPPrefix
|
|
|
|
// TagOwners specify what users (namespaces?) are allow to use certain tags.
|
|
type TagOwners map[string][]string
|
|
|
|
// ACLTest is not implemented, but should be use to check if a certain rule is allowed.
|
|
type ACLTest struct {
|
|
User string `json:"User" yaml:"User"`
|
|
Allow []string `json:"Allow" yaml:"Allow"`
|
|
Deny []string `json:"Deny,omitempty" yaml:"Deny,omitempty"`
|
|
}
|
|
|
|
// UnmarshalJSON allows to parse the Hosts directly into netaddr objects.
|
|
func (hosts *Hosts) UnmarshalJSON(data []byte) error {
|
|
newHosts := Hosts{}
|
|
hostIPPrefixMap := make(map[string]string)
|
|
ast, err := hujson.Parse(data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
ast.Standardize()
|
|
data = ast.Pack()
|
|
err = json.Unmarshal(data, &hostIPPrefixMap)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for host, prefixStr := range hostIPPrefixMap {
|
|
if !strings.Contains(prefixStr, "/") {
|
|
prefixStr += "/32"
|
|
}
|
|
prefix, err := netaddr.ParseIPPrefix(prefixStr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
newHosts[host] = prefix
|
|
}
|
|
*hosts = newHosts
|
|
|
|
return nil
|
|
}
|
|
|
|
// UnmarshalYAML allows to parse the Hosts directly into netaddr objects.
|
|
func (hosts *Hosts) UnmarshalYAML(data []byte) error {
|
|
newHosts := Hosts{}
|
|
hostIPPrefixMap := make(map[string]string)
|
|
|
|
err := yaml.Unmarshal(data, &hostIPPrefixMap)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for host, prefixStr := range hostIPPrefixMap {
|
|
prefix, err := netaddr.ParseIPPrefix(prefixStr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
newHosts[host] = prefix
|
|
}
|
|
*hosts = newHosts
|
|
|
|
return nil
|
|
}
|
|
|
|
// IsZero is perhaps a bit naive here.
|
|
func (policy ACLPolicy) IsZero() bool {
|
|
if len(policy.Groups) == 0 && len(policy.Hosts) == 0 && len(policy.ACLs) == 0 {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|