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Decode text/plain and text/html body with encoding #24

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56 changes: 52 additions & 4 deletions parsemail.go
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Original file line number Diff line number Diff line change
Expand Up @@ -46,9 +46,31 @@ func Parse(r io.Reader) (email Email, err error) {
email.TextBody, email.HTMLBody, email.EmbeddedFiles, err = parseMultipartRelated(msg.Body, params["boundary"])
case contentTypeTextPlain:
message, _ := ioutil.ReadAll(msg.Body)
var reader io.Reader
reader, err = decodeContent(strings.NewReader(string(message[:])), msg.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return
}

message, err = ioutil.ReadAll(reader)
if err != nil {
return
}

email.TextBody = strings.TrimSuffix(string(message[:]), "\n")
case contentTypeTextHtml:
message, _ := ioutil.ReadAll(msg.Body)
var reader io.Reader
reader, err = decodeContent(strings.NewReader(string(message[:])), msg.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return
}

message, err = ioutil.ReadAll(reader)
if err != nil {
return
}

email.HTMLBody = strings.TrimSuffix(string(message[:]), "\n")
default:
email.Content, err = decodeContent(msg.Body, msg.Header.Get("Content-Transfer-Encoding"))
Expand Down Expand Up @@ -121,14 +143,26 @@ func parseMultipartRelated(msg io.Reader, boundary string) (textBody, htmlBody s

switch contentType {
case contentTypeTextPlain:
ppContent, err := ioutil.ReadAll(part)
message, _ := ioutil.ReadAll(part)
reader, err := decodeContent(strings.NewReader(string(message[:])), part.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

ppContent, err := ioutil.ReadAll(reader)
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

textBody += strings.TrimSuffix(string(ppContent[:]), "\n")
case contentTypeTextHtml:
ppContent, err := ioutil.ReadAll(part)
message, _ := ioutil.ReadAll(part)
reader, err := decodeContent(strings.NewReader(string(message[:])), part.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

ppContent, err := ioutil.ReadAll(reader)
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}
Expand Down Expand Up @@ -178,14 +212,26 @@ func parseMultipartAlternative(msg io.Reader, boundary string) (textBody, htmlBo

switch contentType {
case contentTypeTextPlain:
ppContent, err := ioutil.ReadAll(part)
message, _ := ioutil.ReadAll(part)
reader, err := decodeContent(strings.NewReader(string(message[:])), part.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

ppContent, err := ioutil.ReadAll(reader)
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

textBody += strings.TrimSuffix(string(ppContent[:]), "\n")
case contentTypeTextHtml:
ppContent, err := ioutil.ReadAll(part)
message, _ := ioutil.ReadAll(part)
reader, err := decodeContent(strings.NewReader(string(message[:])), part.Header.Get("Content-Transfer-Encoding"))
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}

ppContent, err := ioutil.ReadAll(reader)
if err != nil {
return textBody, htmlBody, embeddedFiles, err
}
Expand Down Expand Up @@ -361,6 +407,8 @@ func decodeContent(content io.Reader, encoding string) (io.Reader, error) {
}

return bytes.NewReader(dd), nil
case "8bit":
return content, nil
case "":
return content, nil
default:
Expand Down
49 changes: 49 additions & 0 deletions parsemail_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -403,6 +403,31 @@ So, "Hello".`,
htmlBody: "<div dir=\"ltr\"><div>Time for the egg.</div><div><br></div><div><br><br></div></div>",
textBody: "Time for the egg.",
},
14: {
contentType: "multipart/alternative; boundary=\"000000000000ab2e1f05a26de586\"",
mailData: base64Content,
subject: "Saying Hello",
from: []mail.Address{
{
Name: "John Doe",
Address: "jdoe@machine.example",
},
},
sender: mail.Address{
Name: "Michael Jones",
Address: "mjones@machine.example",
},
to: []mail.Address{
{
Name: "Mary Smith",
Address: "mary@example.net",
},
},
messageID: "1234@local.machine.example",
date: parseDate("Fri, 21 Nov 1997 09:55:06 -0600"),
htmlBody: "<div dir=\"ltr\">👍</div>",
textBody: "👍",
},
}

for index, td := range testData {
Expand Down Expand Up @@ -946,3 +971,27 @@ Content-Disposition: attachment;

--f403045f1dcc043a44054c8e6bbf--
`

var base64Content = `MIME-Version: 1.0
From: John Doe <jdoe@machine.example>
Sender: Michael Jones <mjones@machine.example>
To: Mary Smith <mary@example.net>
Subject: Saying Hello
Date: Fri, 21 Nov 1997 09:55:06 -0600
Message-ID: <1234@local.machine.example>
Content-Type: multipart/alternative; boundary="000000000000ab2e1f05a26de586"

--000000000000ab2e1f05a26de586
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: base64

8J+RjQo=

--000000000000ab2e1f05a26de586
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: base64

PGRpdiBkaXI9Imx0ciI+8J+RjTwvZGl2Pgo=

--000000000000ab2e1f05a26de586--
`