happyDeliver/pkg/analyzer/dns_dmarc_test.go

343 lines
9.6 KiB
Go

// This file is part of the happyDeliver (R) project.
// Copyright (c) 2025 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package analyzer
import (
"testing"
"time"
"git.happydns.org/happyDeliver/internal/api"
)
func TestExtractDMARCPolicy(t *testing.T) {
tests := []struct {
name string
record string
expectedPolicy string
}{
{
name: "Policy none",
record: "v=DMARC1; p=none; rua=mailto:dmarc@example.com",
expectedPolicy: "none",
},
{
name: "Policy quarantine",
record: "v=DMARC1; p=quarantine; pct=100",
expectedPolicy: "quarantine",
},
{
name: "Policy reject",
record: "v=DMARC1; p=reject; sp=reject",
expectedPolicy: "reject",
},
{
name: "No policy",
record: "v=DMARC1",
expectedPolicy: "unknown",
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.extractDMARCPolicy(tt.record)
if result != tt.expectedPolicy {
t.Errorf("extractDMARCPolicy(%q) = %q, want %q", tt.record, result, tt.expectedPolicy)
}
})
}
}
func TestValidateDMARC(t *testing.T) {
tests := []struct {
name string
record string
expected bool
}{
{
name: "Valid DMARC",
record: "v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com",
expected: true,
},
{
name: "Valid DMARC minimal",
record: "v=DMARC1; p=none",
expected: true,
},
{
name: "Invalid DMARC - no version",
record: "p=quarantine",
expected: false,
},
{
name: "Invalid DMARC - no policy",
record: "v=DMARC1",
expected: false,
},
{
name: "Invalid DMARC - wrong version",
record: "v=DMARC2; p=reject",
expected: false,
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.validateDMARC(tt.record)
if result != tt.expected {
t.Errorf("validateDMARC(%q) = %v, want %v", tt.record, result, tt.expected)
}
})
}
}
func TestExtractDMARCSPFAlignment(t *testing.T) {
tests := []struct {
name string
record string
expectedAlignment string
}{
{
name: "SPF alignment - strict",
record: "v=DMARC1; p=quarantine; aspf=s",
expectedAlignment: "strict",
},
{
name: "SPF alignment - relaxed (explicit)",
record: "v=DMARC1; p=quarantine; aspf=r",
expectedAlignment: "relaxed",
},
{
name: "SPF alignment - relaxed (default, not specified)",
record: "v=DMARC1; p=quarantine",
expectedAlignment: "relaxed",
},
{
name: "Both alignments specified - check SPF strict",
record: "v=DMARC1; p=quarantine; aspf=s; adkim=r",
expectedAlignment: "strict",
},
{
name: "Both alignments specified - check SPF relaxed",
record: "v=DMARC1; p=quarantine; aspf=r; adkim=s",
expectedAlignment: "relaxed",
},
{
name: "Complex record with SPF strict",
record: "v=DMARC1; p=reject; rua=mailto:dmarc@example.com; aspf=s; adkim=s; pct=100",
expectedAlignment: "strict",
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.extractDMARCSPFAlignment(tt.record)
if result == nil {
t.Fatalf("extractDMARCSPFAlignment(%q) returned nil, expected non-nil", tt.record)
}
if string(*result) != tt.expectedAlignment {
t.Errorf("extractDMARCSPFAlignment(%q) = %q, want %q", tt.record, string(*result), tt.expectedAlignment)
}
})
}
}
func TestExtractDMARCDKIMAlignment(t *testing.T) {
tests := []struct {
name string
record string
expectedAlignment string
}{
{
name: "DKIM alignment - strict",
record: "v=DMARC1; p=reject; adkim=s",
expectedAlignment: "strict",
},
{
name: "DKIM alignment - relaxed (explicit)",
record: "v=DMARC1; p=reject; adkim=r",
expectedAlignment: "relaxed",
},
{
name: "DKIM alignment - relaxed (default, not specified)",
record: "v=DMARC1; p=none",
expectedAlignment: "relaxed",
},
{
name: "Both alignments specified - check DKIM strict",
record: "v=DMARC1; p=quarantine; aspf=r; adkim=s",
expectedAlignment: "strict",
},
{
name: "Both alignments specified - check DKIM relaxed",
record: "v=DMARC1; p=quarantine; aspf=s; adkim=r",
expectedAlignment: "relaxed",
},
{
name: "Complex record with DKIM strict",
record: "v=DMARC1; p=reject; rua=mailto:dmarc@example.com; aspf=r; adkim=s; pct=100",
expectedAlignment: "strict",
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.extractDMARCDKIMAlignment(tt.record)
if result == nil {
t.Fatalf("extractDMARCDKIMAlignment(%q) returned nil, expected non-nil", tt.record)
}
if string(*result) != tt.expectedAlignment {
t.Errorf("extractDMARCDKIMAlignment(%q) = %q, want %q", tt.record, string(*result), tt.expectedAlignment)
}
})
}
}
func TestExtractDMARCSubdomainPolicy(t *testing.T) {
tests := []struct {
name string
record string
expectedPolicy *string
}{
{
name: "Subdomain policy - none",
record: "v=DMARC1; p=quarantine; sp=none",
expectedPolicy: api.PtrTo("none"),
},
{
name: "Subdomain policy - quarantine",
record: "v=DMARC1; p=reject; sp=quarantine",
expectedPolicy: api.PtrTo("quarantine"),
},
{
name: "Subdomain policy - reject",
record: "v=DMARC1; p=quarantine; sp=reject",
expectedPolicy: api.PtrTo("reject"),
},
{
name: "No subdomain policy specified (defaults to main policy)",
record: "v=DMARC1; p=quarantine",
expectedPolicy: nil,
},
{
name: "Complex record with subdomain policy",
record: "v=DMARC1; p=reject; sp=quarantine; rua=mailto:dmarc@example.com; pct=100",
expectedPolicy: api.PtrTo("quarantine"),
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.extractDMARCSubdomainPolicy(tt.record)
if tt.expectedPolicy == nil {
if result != nil {
t.Errorf("extractDMARCSubdomainPolicy(%q) = %v, want nil", tt.record, result)
}
} else {
if result == nil {
t.Fatalf("extractDMARCSubdomainPolicy(%q) returned nil, expected %q", tt.record, *tt.expectedPolicy)
}
if string(*result) != *tt.expectedPolicy {
t.Errorf("extractDMARCSubdomainPolicy(%q) = %q, want %q", tt.record, string(*result), *tt.expectedPolicy)
}
}
})
}
}
func TestExtractDMARCPercentage(t *testing.T) {
tests := []struct {
name string
record string
expectedPercentage *int
}{
{
name: "Percentage - 100",
record: "v=DMARC1; p=quarantine; pct=100",
expectedPercentage: api.PtrTo(100),
},
{
name: "Percentage - 50",
record: "v=DMARC1; p=quarantine; pct=50",
expectedPercentage: api.PtrTo(50),
},
{
name: "Percentage - 25",
record: "v=DMARC1; p=reject; pct=25",
expectedPercentage: api.PtrTo(25),
},
{
name: "Percentage - 0",
record: "v=DMARC1; p=none; pct=0",
expectedPercentage: api.PtrTo(0),
},
{
name: "No percentage specified (defaults to 100)",
record: "v=DMARC1; p=quarantine",
expectedPercentage: nil,
},
{
name: "Complex record with percentage",
record: "v=DMARC1; p=reject; sp=quarantine; rua=mailto:dmarc@example.com; pct=75",
expectedPercentage: api.PtrTo(75),
},
{
name: "Invalid percentage > 100 (ignored)",
record: "v=DMARC1; p=quarantine; pct=150",
expectedPercentage: nil,
},
{
name: "Invalid percentage < 0 (ignored)",
record: "v=DMARC1; p=quarantine; pct=-10",
expectedPercentage: nil,
},
}
analyzer := NewDNSAnalyzer(5 * time.Second)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := analyzer.extractDMARCPercentage(tt.record)
if tt.expectedPercentage == nil {
if result != nil {
t.Errorf("extractDMARCPercentage(%q) = %v, want nil", tt.record, *result)
}
} else {
if result == nil {
t.Fatalf("extractDMARCPercentage(%q) returned nil, expected %d", tt.record, *tt.expectedPercentage)
}
if *result != *tt.expectedPercentage {
t.Errorf("extractDMARCPercentage(%q) = %d, want %d", tt.record, *result, *tt.expectedPercentage)
}
}
})
}
}