58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
package acl
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/hashicorp/hcl"
|
|
)
|
|
|
|
const (
|
|
KeyPolicyDeny = "deny"
|
|
KeyPolicyRead = "read"
|
|
KeyPolicyWrite = "write"
|
|
)
|
|
|
|
// Policy is used to represent the policy specified by
|
|
// an ACL configuration.
|
|
type Policy struct {
|
|
ID string `hcl:"-"`
|
|
Keys []*KeyPolicy `hcl:"key,expand"`
|
|
}
|
|
|
|
// KeyPolicy represents a policy for a key
|
|
type KeyPolicy struct {
|
|
Prefix string `hcl:",key"`
|
|
Policy string
|
|
}
|
|
|
|
func (k *KeyPolicy) GoString() string {
|
|
return fmt.Sprintf("%#v", *k)
|
|
}
|
|
|
|
// Parse is used to parse the specified ACL rules into an
|
|
// intermediary set of policies, before being compiled into
|
|
// the ACL
|
|
func Parse(rules string) (*Policy, error) {
|
|
// Decode the rules
|
|
p := &Policy{}
|
|
if rules == "" {
|
|
// Hot path for empty rules
|
|
return p, nil
|
|
}
|
|
|
|
if err := hcl.Decode(p, rules); err != nil {
|
|
return nil, fmt.Errorf("Failed to parse ACL rules: %v", err)
|
|
}
|
|
|
|
// Validate the key policy
|
|
for _, kp := range p.Keys {
|
|
switch kp.Policy {
|
|
case KeyPolicyDeny:
|
|
case KeyPolicyRead:
|
|
case KeyPolicyWrite:
|
|
default:
|
|
return nil, fmt.Errorf("Invalid key policy: %#v", kp)
|
|
}
|
|
}
|
|
return p, nil
|
|
}
|