feat: support distinguished name state(S)

internal/pkix/pkix.go

@@ -26,11 +26,10 @@ func ParseDistinguishedName(name string) (map[string]string, error) {
 		return nil, fmt.Errorf("unsupported distinguished name (DN) %q: notation does not support x509.subject identities containing \"=#\"", name)
 	}
 
-	mandatoryFields := []string{"C", "ST", "O"}
 	attrKeyValue := make(map[string]string)
 	dn, err := ldapv3.ParseDN(name)
 	if err != nil {
-		return nil, fmt.Errorf("parsing distinguished name (DN) %q failed with err: %v. A valid DN must contain 'C', 'ST', and 'O' RDN attributes at a minimum, and follow RFC 4514 standard", name, err)
+		return nil, fmt.Errorf("parsing distinguished name (DN) %q failed with err: %v. A valid DN must contain 'C', 'ST' or 'S', and 'O' RDN attributes at a minimum, and follow RFC 4514 standard", name, err)
 	}
 
 	for _, rdn := range dn.RDNs {
@@ -39,6 +38,10 @@ func ParseDistinguishedName(name string) (map[string]string, error) {
 			return nil, fmt.Errorf("distinguished name (DN) %q has multi-valued RDN attributes, remove multi-valued RDN attributes as they are not supported", name)
 		}
 		for _, attribute := range rdn.Attributes {
+			// stateOrProvince name 'S' is an alias for 'ST'
+			if attribute.Type == "S" {
+				attribute.Type = "ST"
+			}
 			if attrKeyValue[attribute.Type] == "" {
 				attrKeyValue[attribute.Type] = attribute.Value
 			} else {
@@ -48,11 +51,13 @@ func ParseDistinguishedName(name string) (map[string]string, error) {
 	}
 
 	// Verify mandatory fields are present
+	mandatoryFields := []string{"C", "ST", "O"}
 	for _, field := range mandatoryFields {
 		if attrKeyValue[field] == "" {
-			return nil, fmt.Errorf("distinguished name (DN) %q has no mandatory RDN attribute for %q, it must contain 'C', 'ST', and 'O' RDN attributes at a minimum", name, field)
+			return nil, fmt.Errorf("distinguished name (DN) %q has no mandatory RDN attribute for %q, it must contain 'C', 'ST' or 'S', and 'O' RDN attributes at a minimum", name, field)
 		}
 	}
+
 	// No errors
 	return attrKeyValue, nil
 }

internal/pkix/pkix_test.go

@@ -0,0 +1,143 @@
+// Copyright The Notary Project Authors.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pkix
+
+import "testing"
+
+func TestParseDistinguishedName(t *testing.T) {
+	// Test cases
+	tests := []struct {
+		name    string
+		input   string
+		wantErr bool
+	}{
+		{
+			name:    "valid DN",
+			input:   "C=US,ST=California,O=Notary Project",
+			wantErr: false,
+		},
+		{
+			name:    "valid DN with State alias",
+			input:   "C=US,S=California,O=Notary Project",
+			wantErr: false,
+		},
+		{
+			name:    "invalid DN",
+			input:   "C=US,ST=California",
+			wantErr: true,
+		},
+		{
+			name:    "invalid DN without State",
+			input:   "C=US,O=Notary Project",
+			wantErr: true,
+		},
+		{
+			name:    "invalid DN without State",
+			input:   "invalid",
+			wantErr: true,
+		},
+		{
+			name:    "duplicate RDN attribute",
+			input:   "C=US,ST=California,O=Notary Project,S=California",
+			wantErr: true,
+		},
+		{
+			name:    "unsupported DN =#",
+			input:   "C=US,ST=California,O=Notary Project=#",
+			wantErr: true,
+		},
+		{
+			name:    "multi-valued RDN attributes",
+			input:   "OU=Sales+CN=J.  Smith,DC=example,DC=net",
+			wantErr: true,
+		},
+	}
+
+	// Run tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := ParseDistinguishedName(tt.input)
+			if tt.wantErr != (err != nil) {
+				t.Errorf("ParseDistinguishedName() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestIsSubsetDN(t *testing.T) {
+	// Test cases
+	tests := []struct {
+		name string
+		dn1  map[string]string
+		dn2  map[string]string
+		want bool
+	}{
+		{
+			name: "subset DN",
+			dn1: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project",
+			},
+			dn2: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project",
+				"L":  "Los Angeles",
+			},
+			want: true,
+		},
+		{
+			name: "not subset DN",
+			dn1: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project",
+			},
+			dn2: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project 2",
+				"L":  "Los Angeles",
+				"CN": "Notary",
+			},
+			want: false,
+		},
+		{
+			name: "not subset DN 2",
+			dn1: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project",
+				"CN": "Notary",
+			},
+			dn2: map[string]string{
+				"C":  "US",
+				"ST": "California",
+				"O":  "Notary Project",
+				"L":  "Los Angeles",
+			},
+			want: false,
+		},
+	}
+
+	// Run tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := IsSubsetDN(tt.dn1, tt.dn2); got != tt.want {
+				t.Errorf("IsSubsetDN() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

verifier/trustpolicy/trustpolicy_test.go

@@ -165,7 +165,7 @@ func TestValidateTrustedIdentities(t *testing.T) {
 	// Validate x509.subject identities
 	invalidDN := "x509.subject:,,,"
 	err = validateTrustedIdentities("test-statement-name", []string{invalidDN})
-	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject:,,,\" with invalid identity value: parsing distinguished name (DN) \",,,\" failed with err: incomplete type, value pair. A valid DN must contain 'C', 'ST', and 'O' RDN attributes at a minimum, and follow RFC 4514 standard" {
+	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject:,,,\" with invalid identity value: parsing distinguished name (DN) \",,,\" failed with err: incomplete type, value pair. A valid DN must contain 'C', 'ST' or 'S', and 'O' RDN attributes at a minimum, and follow RFC 4514 standard" {
 		t.Fatalf("invalid x509.subject identity should return error. Error : %q", err)
 	}
 
@@ -185,7 +185,7 @@ func TestValidateTrustedIdentities(t *testing.T) {
 	// Validate mandatory RDNs
 	invalidDN = "x509.subject:C=US,ST=WA"
 	err = validateTrustedIdentities("test-statement-name", []string{invalidDN})
-	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject:C=US,ST=WA\" with invalid identity value: distinguished name (DN) \"C=US,ST=WA\" has no mandatory RDN attribute for \"O\", it must contain 'C', 'ST', and 'O' RDN attributes at a minimum" {
+	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject:C=US,ST=WA\" with invalid identity value: distinguished name (DN) \"C=US,ST=WA\" has no mandatory RDN attribute for \"O\", it must contain 'C', 'ST' or 'S', and 'O' RDN attributes at a minimum" {
 		t.Fatalf("invalid x509.subject identity should return error. Error : %q", err)
 	}