eml.go

@@ -70,7 +70,6 @@ func EMLToMsgFromFile(filePath string) (*Msg, error) {
 	if err = parseEMLBodyParts(parsedMsg, bodybuf, msg); err != nil {
 		return msg, fmt.Errorf("failed to parse EML body parts: %w", err)
 	}
-	//fmt.Printf("FOO: %+v\n", msg)
 
 	return msg, nil
 }
@@ -160,10 +159,6 @@ func parseEMLHeaders(mailHeader *netmail.Header, msg *Msg) error {
 	// Extract common headers
 	for _, header := range commonHeaders {
 		if value := mailHeader.Get(header.String()); value != "" {
-			if strings.EqualFold(header.String(), HeaderContentType.String()) &&
-				strings.HasPrefix(value, TypeMultipartMixed.String()) {
-				continue
-			}
 			msg.SetGenHeader(header, value)
 		}
 	}
@@ -189,10 +184,9 @@ func parseEMLBodyParts(parsedMsg *netmail.Message, bodybuf *bytes.Buffer, msg *M
 			return fmt.Errorf("failed to parse plain body: %w", err)
 		}
 	case strings.EqualFold(mediatype, TypeMultipartAlternative.String()),
-		strings.EqualFold(mediatype, TypeMultipartMixed.String()),
-		strings.EqualFold(mediatype, TypeMultipartRelated.String()):
+		strings.EqualFold(mediatype, TypeMultipartMixed.String()):
 		if err = parseEMLMultipart(params, bodybuf, msg); err != nil {
-			return fmt.Errorf("failed to parse multipart body: %w", err)
+			return fmt.Errorf("failed to parse multipart/alternative body: %w", err)
 		}
 	default:
 	}
@@ -248,27 +242,9 @@ ReadNextPart:
 		return fmt.Errorf("failed to get next part of multipart message: %w", err)
 	}
 	for err == nil {
-		// Multipart/related parts need to be parsed seperately
-		if contentTypeSlice, ok := multiPart.Header[HeaderContentType.String()]; ok && len(contentTypeSlice) == 1 {
-			contentType, _ := parseMultiPartHeader(contentTypeSlice[0])
-			if strings.EqualFold(contentType, TypeMultipartRelated.String()) {
-				relatedPart := &netmail.Message{
-					Header: netmail.Header(multiPart.Header),
-					Body:   multiPart,
-				}
-				relatedBuf := &bytes.Buffer{}
-				if _, err = relatedBuf.ReadFrom(multiPart); err != nil {
-					return fmt.Errorf("failed to read related multipart message to buffer: %w", err)
-				}
-				if err := parseEMLBodyParts(relatedPart, relatedBuf, msg); err != nil {
-					return fmt.Errorf("failed to parse related multipart body: %w", err)
-				}
-			}
-		}
-
 		// Content-Disposition header means we have an attachment or embed
 		if contentDisposition, ok := multiPart.Header[HeaderContentDisposition.String()]; ok {
-			if err = parseEMLAttachmentEmbed(contentDisposition, multiPart, msg); err != nil {
+			if err := parseEMLAttachmentEmbed(contentDisposition, multiPart, msg); err != nil {
 				return fmt.Errorf("failed to parse attachment/embed: %w", err)
 			}
 			goto ReadNextPart
@@ -285,9 +261,6 @@ ReadNextPart:
 			return fmt.Errorf("failed to get content-type from part")
 		}
 		contentType, optional := parseMultiPartHeader(multiPartContentType[0])
-		if strings.EqualFold(contentType, TypeMultipartRelated.String()) {
-			goto ReadNextPart
-		}
 		part := msg.newPart(ContentType(contentType))
 		if charset, ok := optional["charset"]; ok {
 			part.SetCharset(Charset(charset))
@@ -343,7 +316,7 @@ func parseEMLContentTypeCharset(mailHeader *netmail.Header, msg *Msg) {
 			msg.SetCharset(Charset(charset))
 		}
 		msg.setEncoder()
-		if contentType != "" && !strings.EqualFold(contentType, TypeMultipartMixed.String()) {
+		if contentType != "" {
 			msg.SetGenHeader(HeaderContentType, contentType)
 		}
 	}

eml_test.go

@@ -152,33 +152,6 @@ ICAgc2V2ZXJhbAogICAgICAgICAgICBuZXdsaW5lcwoJICAgICAgICAgICAgYW5kCgkgICAgc3Bh
 Y2VzCiAgICAgaW4KICBpdAouCgpBcyB3ZWxsIGFzIGFuIGVtb2ppOiDwn5mCCg==
 
 --45c75ff528359022eb03679fbe91877d75343f2e1f8193e349deffa33ff7--`
-	exampleMailPlainB64WithEmbed = `Date: Wed, 01 Nov 2023 00:00:00 +0000
-MIME-Version: 1.0
-Message-ID: <1305604950.683004066175.AAAAAAAAaaaaaaaaB@go-mail.dev>
-Subject: Example mail // plain text base64 with embed
-User-Agent: go-mail v0.4.1 // https://github.com/wneessen/go-mail
-X-Mailer: go-mail v0.4.1 // https://github.com/wneessen/go-mail
-From: "Toni Tester" <go-mail@go-mail.dev>
-To: <go-mail+test@go-mail.dev>
-Cc: <go-mail+cc@go-mail.dev>
-Content-Type: multipart/related;
- boundary=ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
-
---ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
-Content-Transfer-Encoding: quoted-printable
-Content-Type: text/plain; charset=UTF-8
-
-This is a test body string
---ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
-Content-Disposition: inline; filename="pixel.png"
-Content-Id: <pixel.png>
-Content-Transfer-Encoding: base64
-Content-Type: image/png; name="pixel.png"
-
-iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQIW2NgYGD4DwABBAEAwS2O
-UAAAAABJRU5ErkJggg==
-
---ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b--`
 )
 
 func TestEMLToMsgFromString(t *testing.T) {
@@ -305,20 +278,18 @@ func TestEMLToMsgFromStringWithAttachment(t *testing.T) {
 		t.Errorf("EMLToMsgFromString of EML with attachment failed: expected no. of attachments: %d, but got: %d",
 			1, len(msg.attachments))
 	}
-}
-
-func TestEMLToMsgFromStringWithEmbed(t *testing.T) {
-	wantSubject := "Example mail // plain text base64 with embed"
-	msg, err := EMLToMsgFromString(exampleMailPlainB64WithEmbed)
-	if err != nil {
-		t.Errorf("EML with embed failed: %s", err)
+	contentTypeHeader := msg.GetGenHeader(HeaderContentType)
+	if len(contentTypeHeader) != 1 {
+		t.Errorf("EMLToMsgFromString of EML with attachment failed: expected no. of content-type header: %d, "+
+			"but got: %d", 1, len(contentTypeHeader))
 	}
-	if subject := msg.GetGenHeader(HeaderSubject); len(subject) > 0 && !strings.EqualFold(subject[0], wantSubject) {
-		t.Errorf("EMLToMsgFromString of EML with embed failed: expected subject: %s, but got: %s",
-			wantSubject, subject[0])
+	contentTypeSplit := strings.SplitN(contentTypeHeader[0], "; ", 2)
+	if len(contentTypeSplit) != 2 {
+		t.Error("failed to split Content-Type header")
+		return
 	}
-	if len(msg.embeds) != 1 {
-		t.Errorf("EMLToMsgFromString of EML with embed failed: expected no. of embeds: %d, but got: %d",
-			1, len(msg.attachments))
+	if !strings.EqualFold(contentTypeSplit[0], "multipart/mixed") {
+		t.Errorf("EMLToMsgFromString of EML with attachment failed: expected content-type: %s, "+
+			"but got: %s", "multipart/mixed", contentTypeSplit[0])
 	}
 }