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Add base64 encoding support to email attachments
The updated code adds base64 encoding support to email attachments and inline content in eml.go. It does this by introducing a new dataReader which uses a base64 decoder if the content transfer encoding is base64. With this update, attachments with base64 content will be correctly decoded when processed.
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commit
84e6275cb2
1 changed files with 17 additions and 2 deletions
19
eml.go
19
eml.go
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@ -388,13 +388,28 @@ func parseEMLAttachmentEmbed(contentDisposition []string, multiPart *multipart.P
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if name, ok := optional["filename"]; ok {
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filename = name[1 : len(name)-1]
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}
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var dataReader io.Reader
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dataReader = multiPart
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contentTransferEnc, _ := parseMultiPartHeader(multiPart.Header.Get(HeaderContentTransferEnc.String()))
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b64Decoder := base64.NewDecoder(base64.StdEncoding, multiPart)
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if strings.EqualFold(contentTransferEnc, EncodingB64.String()) {
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dataReader = b64Decoder
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}
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switch strings.ToLower(cdType) {
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case "attachment":
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if err := msg.AttachReader(filename, multiPart); err != nil {
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if err := msg.AttachReader(filename, dataReader); err != nil {
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return fmt.Errorf("failed to attach multipart body: %w", err)
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}
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case "inline":
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if err := msg.EmbedReader(filename, multiPart); err != nil {
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if contentID, _ := parseMultiPartHeader(multiPart.Header.Get(HeaderContentID.String())); contentID != "" {
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if err := msg.EmbedReader(filename, dataReader, WithContentID(contentID)); err != nil {
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return fmt.Errorf("failed to embed multipart body: %w", err)
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}
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return nil
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}
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if err := msg.EmbedReader(filename, dataReader); err != nil {
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return fmt.Errorf("failed to embed multipart body: %w", err)
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}
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}
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