modified to only print policy as its read in and omit empty tags

acls.go

@@ -128,6 +128,67 @@ func (h *Headscale) ListACLPolicy() (*ACLPolicy, error) {
 	return h.aclPolicy, nil
 }
 
+func ACLProtoToStruct(v *v1.ACLPolicy) (*ACLPolicy, error) {
+	
+	// v := req.GetPolicy()
+
+	// groups parsing
+	vgroups := v.GetGroups()
+	groups := make(map[string][]string, len(vgroups))
+	for n,i := range vgroups {
+		groups[n] = i.GetGroup()
+	}
+
+	// hosts parsing
+	vhosts := v.GetHosts() 
+	hosts := make(map[string]netaddr.IPPrefix, len(vhosts))
+	for n,i := range vhosts {
+		addr, err := netaddr.ParseIPPrefix(i)
+		if err != nil {
+			return nil, err 
+		}
+		hosts[n] = addr 
+	}
+
+	// tag owners parsing
+	vtagowners := v.GetTagOwners()
+	tagowners := make(map[string][]string, len(vtagowners))
+	for n,i := range vtagowners {
+		tagowners[n] = i.GetTagOwners()
+	}
+
+	// ACLs parsing 
+	vacls := (*v).GetAcls()
+	acls  := make([]ACL, len(vacls))
+	for n,i := range vacls {
+		acls[n] = ACL{
+			Action: i.GetAction(),
+			Protocol: i.GetProtocol(),
+			Sources: i.GetSources(),
+			Destinations: i.GetDestinations(),
+		}
+	}
+
+	// ACL Tests parsing 
+	vtests := v.GetAclTest()
+	tests := make([]ACLTest, len(vtests))
+	for n,i := range vtests {
+		tests[n] = ACLTest{
+			Source: i.GetSource(),
+			Accept: i.GetAccept(),
+			Deny: i.GetDeny(),
+		}
+	}
+	
+	return &ACLPolicy{
+		Groups: 	groups,
+		Hosts:  	hosts, 
+		TagOwners: 	tagowners,
+		ACLs: 		acls, 
+		Tests:		tests,
+	}, nil
+}
+
 func (policy *ACLPolicy) toProto() *v1.ACLPolicy {
 	protoACLPolicy := v1.ACLPolicy{
 		Groups:    policy.Groups.toProto(),

acls_types.go

@@ -11,19 +11,19 @@ import (
 
 // ACLPolicy represents a Tailscale ACL Policy.
 type ACLPolicy struct {
-	Groups    Groups    `json:"groups"    yaml:"groups"`
+	Groups    Groups    `json:"groups,omitempty"    yaml:"groups,omitempty"`
-	Hosts     Hosts     `json:"hosts"     yaml:"hosts"`
+	Hosts     Hosts     `json:"hosts,omitempty"     yaml:"hosts,omitempty"`
-	TagOwners TagOwners `json:"tagOwners" yaml:"tagOwners"`
+	TagOwners TagOwners `json:"tagOwners,omitempty" yaml:"tagOwners,omitempty"`
-	ACLs      []ACL     `json:"acls"      yaml:"acls"`
+	ACLs      []ACL     `json:"acls,omitempty"      yaml:"acls,omitempty"`
-	Tests     []ACLTest `json:"tests"     yaml:"tests"`
+	Tests     []ACLTest `json:"tests,omitempty"     yaml:"tests,omitempty"`
 }
 
 // ACL is a basic rule for the ACL Policy.
 type ACL struct {
-	Action       string   `json:"action"  yaml:"action"`
+	Action       string   `json:"action,omitempty"  yaml:"action,omitempty"`
-	Protocol     string   `json:"proto"   yaml:"proto"`
+	Protocol     string   `json:"proto,omitempty"   yaml:"proto,omitempty"`
-	Sources      []string `json:"src"     yaml:"src"`
+	Sources      []string `json:"src,omitempty"     yaml:"src,omitempty"`
-	Destinations []string `json:"dst"     yaml:"dst"`
+	Destinations []string `json:"dst,omitempty"     yaml:"dst,omitempty"`
 }
 
 // Groups references a series of alias in the ACL rules.
@@ -37,9 +37,9 @@ type TagOwners map[string][]string
 
 // ACLTest is not implemented, but should be use to check if a certain rule is allowed.
 type ACLTest struct {
-	Source string   `json:"src"             yaml:"src"`
+	Source string   `json:"src,omitempty"       yaml:"src,omitempty"`
-	Accept []string `json:"accept"          yaml:"accept"`
+	Accept []string `json:"accept,omitempty"    yaml:"accept,omitempty"`
-	Deny   []string `json:"deny,omitempty"  yaml:"deny,omitempty"`
+	Deny   []string `json:"deny,omitempty"      yaml:"deny,omitempty"`
 }
 
 // UnmarshalJSON allows to parse the Hosts directly into netaddr objects.

cmd/headscale/cli/acls.go

@@ -3,10 +3,9 @@ package cli
 import (
 	"fmt"
 
-	// "github.com/juanfont/headscale".
+	"github.com/juanfont/headscale"
 	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
 	"github.com/spf13/cobra"
-	
 )
 
 func init() {
@@ -40,7 +39,7 @@ var listAclsCmd = &cobra.Command{
 		if err != nil {
 			ErrorOutput(
 				err,
-				fmt.Sprintf("Error getting headscale app: %s", err),
+				fmt.Sprintf("Error getting ACL from server: %s", err),
 				output,
 			)
 
@@ -57,8 +56,19 @@ var listAclsCmd = &cobra.Command{
 			return
 		}
 
+		policy, err := headscale.ACLProtoToStruct(response.Policy)
+		if err != nil {
+			ErrorOutput(
+				err,
+				fmt.Sprintf("Error parsing response from server: %s", err),
+				output,
+			)
+
+			return 
+		}
+
 		SuccessOutput(
-			response.Policy,
+			policy,
 			``,
 			output,
 		)