| 203 | } |
| 204 | |
| 205 | func isAligned(fromDomain, authDomain string, mode AlignmentMode) bool { |
| 206 | if mode == dmarc.AlignmentStrict { |
| 207 | return strings.EqualFold(fromDomain, authDomain) |
| 208 | } |
| 209 | |
| 210 | tld, _ := publicsuffix.PublicSuffix(fromDomain) |
| 211 | if strings.EqualFold(fromDomain, tld) { |
| 212 | return strings.EqualFold(fromDomain, authDomain) |
| 213 | } |
| 214 | orgDomainFrom, err := publicsuffix.EffectiveTLDPlusOne(fromDomain) |
| 215 | if err != nil { |
| 216 | return false |
| 217 | } |
| 218 | authDomainFrom, err := publicsuffix.EffectiveTLDPlusOne(authDomain) |
| 219 | if err != nil { |
| 220 | return false |
| 221 | } |
| 222 | |
| 223 | return strings.EqualFold(orgDomainFrom, authDomainFrom) |
| 224 | } |
| 225 | |
| 226 | func ExtractFromDomain(hdr textproto.Header) (string, error) { |
| 227 | // TODO(GH emersion/go-message#75): Add textproto.Header.Count method. |