func selectMultiPart(msg *mail.Message, boundary, preferType string) (*mail.Message, error) {
reader := multipart.NewReader(msg.Body, boundary)
parts := make(map[string]*mail.Message)
for part, err := reader.NextPart(); err != io.EOF; part, err = reader.NextPart() {
if err != nil {
return nil, err
}
header := mail.Header(part.Header)
mediatype, _, err := mime.ParseMediaType(header.Get("Content-Type"))
if err != nil {
continue
}
if mediatype == preferType {
return &mail.Message{header, part}, nil
}
types := strings.Split(mediatype, "/")
if len(types) == 0 {
continue
}
if _, ok := parts[types[0]]; !ok {
body, err := ioutil.ReadAll(part)
if err == nil {
parts[types[0]] = &mail.Message{header, bytes.NewBuffer(body)}
}
}
}
types := strings.Split(preferType, "/")
if part, ok := parts[types[0]]; ok {
return part, nil
}
if part, ok := parts["multipart"]; ok {
return part, nil
}
return nil, fmt.Errorf("No prefered part")
}
func TestMailAddress(t *testing.T) {
Log.SetHandler(tsthlp.TestHandler(t))
for i, str := range [][3]string{
[3]string{"=?iso-8859-2?Q?Bogl=E1rka_Tak=E1cs?= <*****@*****.**>",
"Boglárka Takács", "<*****@*****.**>"},
[3]string{"=?iso-8859-2?Q?K=E1r_Oszt=E1ly_=28kar=40kobe=2Ehu=29?= <*****@*****.**>",
"Kár_Osztály [email protected]", "<*****@*****.**>"},
} {
mh := make(map[string][]string, 1)
k := strconv.Itoa(i)
mh[k] = []string{str[0]}
mailHeader := mail.Header(mh)
if addr, err := mailHeader.AddressList(k); err == nil {
t.Errorf("address for %s: %q", k, addr)
} else {
t.Logf("error parsing address %s(%q): %s", k, mailHeader.Get(k), err)
}
if addr, err := ParseAddress(str[0]); err != nil {
t.Errorf("error parsing address %q: %s", str[0], err)
} else {
t.Logf("address for %q: %q <%s>", str[0], addr.Name, addr.Address)
}
}
}
func TestParseQuotedBody(t *testing.T) {
header := mail.Header(map[string][]string{
"Content-Type": []string{"text/html; charset=\"iso-8859-1\""},
"Content-Transfer-Encoding": []string{"quoted-printable"},
})
html, text, multipart, err := parseBody(header, []byte(quotedEmail))
if err != nil {
t.Error("error doing test! ", err)
return
}
if multipart {
t.Error("parse body returned with multipart flag set")
}
if len(text) > 0 {
t.Errorf("an HTML only email returned with text: %q", string(text))
}
if bytes.Contains(html, []byte("=3D")) {
t.Errorf("parseBody did not handle quoted-printable format as expected. `=3D' still found in message:\n%q", string(html))
}
// crazy Äpple to verify we parsed iso-8859-1 correctly AND did the quoted-printable fix
if !bytes.HasPrefix(html, []byte("Äpple<html><head>")) || !bytes.HasSuffix(html, []byte("</html>\r\n")) {
t.Errorf("parseBody did not pull out HTML correctly. Expected '<html><head>' prefix and '</html>\r\n' suffix. got:\n%q", string(html))
}
}
func (h ciHeader) AddressList(key string) ([]*mail.Address, error) {
header := mail.Header(h)
// First try with stdlib implementation
addresses, err := header.AddressList(key)
if err == nil {
return addresses, nil
}
value, found := header[key]
if !found {
return nil, nil
}
// "Forced" parsing of non-standard e-mail addresses
return h.parseNonstandardAddressesList(strings.Join(value, " "))
}
// Header returns the corresponding mail header to a key.
func (d Dir) Header(key string) (header mail.Header, err error) {
filename, err := d.Filename(key)
if err != nil {
return
}
file, err := os.Open(filename)
if err != nil {
return
}
defer file.Close()
tp := textproto.NewReader(bufio.NewReader(file))
hdr, err := tp.ReadMIMEHeader()
if err != nil {
return
}
header = mail.Header(hdr)
return
}
func TestParseMultiBody(t *testing.T) {
header := mail.Header(map[string][]string{"Content-Type": []string{`multipart/alternative; boundary="eZDakj4l4DVQ=_?:"`}})
html, text, multipart, err := parseBody(header, []byte(multipartEmail))
if err != nil {
t.Error("error doing test! ", err)
return
}
if !multipart {
t.Error("parse body did not return with multipart flag set")
}
if !bytes.HasPrefix(html, []byte("<!DOCTYPE html>")) || !bytes.HasSuffix(html, []byte("</html>\n")) {
t.Errorf("parseBody did not pull out the HTML correctly. Expected to start with doctype and end with </html>, got:\n%q", string(html))
}
if !bytes.HasPrefix(text, []byte("NBA announces")) || !bytes.HasSuffix(text, []byte("approved Ballmer.\n")) {
t.Errorf("parseBody did not pull out text correctly. Expected 'NBA announces' prefix and 'Ballmer.' suffix. got:\n%q", string(text))
}
}
func TestParsePlainBody(t *testing.T) {
header := mail.Header(map[string][]string{"Content-Type": []string{"text/html; charset=UTF-8"}})
html, text, multipart, err := parseBody(header, []byte(htmlEmail))
if err != nil {
t.Error("error doing test! ", err)
return
}
if multipart {
t.Error("parse body returned with multipart flag set")
}
if len(text) > 0 {
t.Errorf("an HTML only email returned with text: %q", string(text))
}
if !bytes.HasPrefix(html, []byte("<br />")) || !bytes.HasSuffix(html, []byte("FoxNews.com.")) {
t.Errorf("parseBody did not pull out HTML correctly. Expected '<br />' prefix and 'FoxNews.com.' suffix. got:\n%q", string(html))
}
}
func compose() (*mail.Message, error) {
// Make sure we can re-use Stdin even after being consumed by mail.ReadMessage
b := bytes.Buffer{}
b.ReadFrom(os.Stdin)
msg := b.String()
m, err := mail.ReadMessage(bytes.NewBufferString(msg))
if err != nil {
if config.ScanMessage {
return nil, fmt.Errorf("ScanMessage: cannot parse message: %s", err)
}
// Assume there are no headers in the message
m = &mail.Message{
Header: mail.Header(textproto.MIMEHeader{}),
Body: bufio.NewReader(bytes.NewBufferString(msg)),
}
}
// Make sure all required fields are set
if 0 == len(m.Header["From"]) {
m.Header["From"] = []string{(&mail.Address{config.Message_FromName, config.Message_From}).String()}
} else if from, err := mail.ParseAddress(m.Header["From"][0]); config.ScanMessage && err == nil {
// Parse and put in config; to be used by c.Mail
config.Message_From = from.Address
}
if 0 == len(m.Header["To"]) {
m.Header["To"] = config.Message_To
}
if 0 == len(m.Header["Date"]) {
m.Header["Date"] = []string{time.Now().Format("Mon, 2 Jan 2006 15:04:05 -0700")}
}
if 0 == len(m.Header["Message-Id"]) {
m.Header["Message-Id"] = []string{"<GOSSMTP." + generateMessageId() + "@" + config.Hostname + ">"}
}
return m, nil
}
func (c *IMAPClient) GetMessage(id string) (*mail.Message, error) {
headerResp := c.Do(fmt.Sprintf("FETCH %s %s", id, RFC822Header))
if headerResp.Error() != nil {
return nil, headerResp.Error()
}
replys := headerResp.Replys()
reader := textproto.NewReader(bufio.NewReader(bytes.NewBuffer(replys[0].content)))
header, err := reader.ReadMIMEHeader()
if err != nil {
return nil, err
}
bodyResp := c.Do(fmt.Sprintf("FETCH %s %s", id, RFC822Text))
if bodyResp.Error() != nil {
return nil, bodyResp.Error()
}
return &mail.Message{
Header: mail.Header(header),
Body: bytes.NewBuffer(bodyResp.Replys()[0].content),
}, nil
}
func TestSelectPart(t *testing.T) {
{
hs := `MIME-Version: 1.0
Received: by 10.76.101.172 with HTTP; Tue, 26 Jun 2012 23:11:28 -0700 (PDT)
Date: Wed, 27 Jun 2012 14:11:28 +0800
Delivered-To: [email protected]
Message-ID: <*****@*****.**>
Subject: test
From: Googol Lee <*****@*****.**>
To: =?UTF-8?B?R29vZ29sIExlZSAtIEdvb2dsZee6r+eIt+S7rO+8gemTgeihgOecn+axieWtkO+8ge+8gQ==?= <*****@*****.**>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64`
bd := `YTAwNyBPSyBTdWNjZXNzCgopCgotLQrmlrDnmoTnkIborrrku47lsJHmlbDkurrnmoTkuLvlvKDl
iLDkuIDnu5/lpKnkuIvvvIzlubbkuI3mmK/lm6DkuLrov5nkuKrnkIborrror7TmnI3kuobliKvk
urrmipvlvIPml6fop4LngrnvvIzogIzmmK/lm6DkuLrkuIDku6PkurrnmoTpgJ3ljrvjgIIK`
reader := textproto.NewReader(bufio.NewReader(bytes.NewBufferString(hs)))
hr, _ := reader.ReadMIMEHeader()
msg := &mail.Message{
Header: mail.Header(hr),
Body: bytes.NewBufferString(bd),
}
expect := "a007 OK Success\n\n)\n\n--\n新的理论从少数人的主张到一统天下，并不是因为这个理论说服了别人抛弃旧观点，而是因为一代人的逝去。\n"
content, mediatype, charset, _ := GetBody(msg, "text/plain")
if mediatype != "text/plain" {
t.Errorf("mediatype expect: text/plain, got: %s", mediatype)
}
if charset != "UTF-8" {
t.Errorf("charset expect: UTF-8, got: %s", charset)
}
if content != expect {
t.Errorf("content expect:\n%s\ngot:\n%s", expect, content)
}
}
{
hs := `MIME-Version: 1.0
Received: by 10.76.101.172 with HTTP; Tue, 26 Jun 2012 23:11:28 -0700 (PDT)
Date: Wed, 27 Jun 2012 14:11:28 +0800
Delivered-To: [email protected]
Message-ID: <*****@*****.**>
Subject: test
From: Googol Lee <*****@*****.**>
To: =?UTF-8?B?R29vZ29sIExlZSAtIEdvb2dsZee6r+eIt+S7rO+8gemTgeihgOecn+axieWtkO+8ge+8gQ==?= <*****@*****.**>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable`
bd := "If you believe that truth=3Dbeauty, then surely =\r\nmathematics is the most beautiful branch of philosophy."
reader := textproto.NewReader(bufio.NewReader(bytes.NewBufferString(hs)))
hr, _ := reader.ReadMIMEHeader()
msg := &mail.Message{
Header: mail.Header(hr),
Body: bytes.NewBufferString(bd),
}
expect := "If you believe that truth=beauty, then surely mathematics is the most beautiful branch of philosophy."
content, mediatype, charset, _ := GetBody(msg, "text/plain")
if mediatype != "text/plain" {
t.Errorf("mediatype expect: text/plain, got: %s", mediatype)
}
if charset != "UTF-8" {
t.Errorf("charset expect: UTF-8, got: %s", charset)
}
if content != expect {
t.Errorf("content expect:\n%s\ngot:\n%s", expect, content)
}
}
{
hs := `MIME-Version: 1.0
Received: by 10.76.101.172 with HTTP; Tue, 26 Jun 2012 23:11:28 -0700 (PDT)
Date: Wed, 27 Jun 2012 14:11:28 +0800
Delivered-To: [email protected]
Message-ID: <*****@*****.**>
Subject: test
From: Googol Lee <*****@*****.**>
To: =?UTF-8?B?R29vZ29sIExlZSAtIEdvb2dsZee6r+eIt+S7rO+8gemTgeihgOecn+axieWtkO+8ge+8gQ==?= <*****@*****.**>
Content-Type: multipart/alternative; boundary=14dae9d67df4436caa04c39ae8b8`
bd := `--14dae9d67df4436caa04c39ae8b8
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64
YWJjYWJjCgotLSAK5paw55qE55CG6K665LuO5bCR5pWw5Lq655qE5Li75byg5Yiw5LiA57uf5aSp
5LiL77yM5bm25LiN5piv5Zug5Li66L+Z5Liq55CG6K666K+05pyN5LqG5Yir5Lq65oqb5byD5pen
6KeC54K577yM6ICM5piv5Zug5Li65LiA5Luj5Lq655qE6YCd5Y6744CCCg==
--14dae9d67df4436caa04c39ae8b8
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: base64
YWJjYWJjPGJyPjxicj4tLSA8YnI+5paw55qE55CG6K665LuO5bCR5pWw5Lq655qE5Li75byg5Yiw
5LiA57uf5aSp5LiL77yM5bm25LiN5piv5Zug5Li66L+Z5Liq55CG6K666K+05pyN5LqG5Yir5Lq6
5oqb5byD5pen6KeC54K577yM6ICM5piv5Zug5Li65LiA5Luj5Lq655qE6YCd5Y6744CCPGJyPgo=
--14dae9d67df4436caa04c39ae8b8--`
reader := textproto.NewReader(bufio.NewReader(bytes.NewBufferString(hs)))
hr, _ := reader.ReadMIMEHeader()
msg := &mail.Message{
Header: mail.Header(hr),
Body: bytes.NewBufferString(bd),
}
expect := "abcabc\n\n-- \n新的理论从少数人的主张到一统天下，并不是因为这个理论说服了别人抛弃旧观点，而是因为一代人的逝去。\n"
content, mediatype, charset, _ := GetBody(msg, "text/plain")
if mediatype != "text/plain" {
t.Errorf("mediatype expect: text/plain, got: %s", mediatype)
}
if charset != "UTF-8" {
t.Errorf("charset expect: UTF-8, got: %s", charset)
}
if content != expect {
t.Errorf("content expect:\n%s\ngot:\n%s", expect, content)
}
}
{
hs := `MIME-Version: 1.0
Received: by 10.76.101.172 with HTTP; Tue, 26 Jun 2012 23:11:28 -0700 (PDT)
Date: Wed, 27 Jun 2012 14:11:28 +0800
Delivered-To: [email protected]
Message-ID: <*****@*****.**>
Subject: test
From: Googol Lee <*****@*****.**>
To: =?UTF-8?B?R29vZ29sIExlZSAtIEdvb2dsZee6r+eIt+S7rO+8gemTgeihgOecn+axieWtkO+8ge+8gQ==?= <*****@*****.**>
Content-Type: multipart/alternative; boundary=14dae9d67df4436caa04c39ae8b8`
bd := `--14dae9d67df4436caa04c39ae8b8
Content-Type: text/json; charset=UTF-8
Content-Transfer-Encoding: base64
YWJjYWJjCgotLSAK5paw55qE55CG6K665LuO5bCR5pWw5Lq655qE5Li75byg5Yiw5LiA57uf5aSp
5LiL77yM5bm25LiN5piv5Zug5Li66L+Z5Liq55CG6K666K+05pyN5LqG5Yir5Lq65oqb5byD5pen
6KeC54K577yM6ICM5piv5Zug5Li65LiA5Luj5Lq655qE6YCd5Y6744CCCg==
--14dae9d67df4436caa04c39ae8b8
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: base64
YWJjYWJjPGJyPjxicj4tLSA8YnI+5paw55qE55CG6K665LuO5bCR5pWw5Lq655qE5Li75byg5Yiw
5LiA57uf5aSp5LiL77yM5bm25LiN5piv5Zug5Li66L+Z5Liq55CG6K666K+05pyN5LqG5Yir5Lq6
5oqb5byD5pen6KeC54K577yM6ICM5piv5Zug5Li65LiA5Luj5Lq655qE6YCd5Y6744CCPGJyPgo=
--14dae9d67df4436caa04c39ae8b8--`
reader := textproto.NewReader(bufio.NewReader(bytes.NewBufferString(hs)))
hr, _ := reader.ReadMIMEHeader()
msg := &mail.Message{
Header: mail.Header(hr),
Body: bytes.NewBufferString(bd),
}
expect := "abcabc\n\n-- \n新的理论从少数人的主张到一统天下，并不是因为这个理论说服了别人抛弃旧观点，而是因为一代人的逝去。\n"
content, mediatype, charset, _ := GetBody(msg, "text/plain")
if mediatype != "text/json" {
t.Errorf("mediatype expect: text/plain, got: %s", mediatype)
}
if charset != "UTF-8" {
t.Errorf("charset expect: UTF-8, got: %s", charset)
}
if content != expect {
t.Errorf("content expect:\n%s\ngot:\n%s", expect, content)
}
}
}
// returns the content-type, params and a decoder for the body of the multipart
func getCT(
header map[string][]string,
) (
contentType string,
params map[string]string,
decoder func(io.Reader) io.Reader,
err error,
) {
decoder = func(r io.Reader) io.Reader {
return r
}
contentType = mail.Header(header).Get("Content-Type")
if contentType == "" {
return
}
var nct string
nct, params, err = mime.ParseMediaType(contentType)
if err != nil {
err = errgo.Newf("cannot parse Content-Type %s: %s", contentType, err)
return
}
contentType = nct
te := strings.ToLower(mail.Header(header).Get("Content-Transfer-Encoding"))
switch te {
case "":
case "base64":
decoder = func(r io.Reader) io.Reader {
r = B64FilterReader(r, nil)
if CheckEncoding {
raw, e := ioutil.ReadAll(r)
if e != nil {
logger.Warn("msg", "cannot read data", "error", e)
return bytes.NewReader(nil)
}
decoded := make([]byte, base64.StdEncoding.DecodedLen(len(raw)))
n, e := base64.StdEncoding.Decode(decoded, raw)
if e != nil {
bad := string(raw[:min(20, len(raw))])
txt := e.Error()
q := strings.LastIndex(txt, " ")
if q >= 0 {
p, e2 := strconv.Atoi(txt[q+1:])
if e2 == nil {
p = max(0, p-4)
q = min(len(raw), p+4)
bad = string(raw[p:q])
}
}
logger.Error("msg", "base64 decoding", "raw", bad, "error", e)
}
// K-MT9461
return bytes.NewReader(decoded[:n])
}
return base64.NewDecoder(base64.StdEncoding, r)
}
case "quoted-printable":
decoder = func(r io.Reader) io.Reader {
br := bufio.NewReaderSize(r, 1024)
first, _ := br.Peek(1024)
enc := qprintable.BinaryEncoding
if len(first) > 0 {
enc = qprintable.DetectEncoding(string(first))
}
return qprintable.NewDecoder(enc, br)
}
default:
logger.Warn("msg", "unknown transfer-encoding", "transfer-encoding", te)
}
return
}
// PrependHeaderFilter writes Subject, From... headers at the beginning of the html/plain parts.
func PrependHeaderFilter(inch <-chan i18nmail.MailPart, outch chan<- i18nmail.MailPart,
files chan<- ArchFileItem, errch chan<- error, ctx *Context,
) {
defer func() {
logger.Debug("msg", "PrependHeaderFilter closes", "outch", outch)
close(outch)
}()
ctx = prepareContext(ctx, "")
mailHeader := mail.Header(make(map[string][]string, len(PrependHeaders)))
headersBuf := bytes.NewBuffer(make([]byte, 0, 128))
var br *bufio.Reader
for part := range inch {
logger.Debug("msg", "PrependHeaderFilter receives", "seq", part.Seq, "ct", part.ContentType, "header", part.Header, "inch", inch)
if len(mailHeader["From"]) == 0 || mailHeader["Subject"][0] == "" {
hdrs := make([]textproto.MIMEHeader, 0, 4)
parent := &part
if len(parent.Header) > 0 {
hdrs = append(hdrs, parent.Header)
}
for parent.Parent != nil {
parent = parent.Parent
if len(parent.Header) > 0 {
hdrs = append(hdrs, parent.Header)
}
}
if len(hdrs) > 0 {
hdr := hdrs[len(hdrs)-1]
logger.Info("msg", "filling mailHeader", "header", hdr)
for _, k := range PrependHeaders {
if v, ok := hdr[k]; ok {
mailHeader[k] = v
}
}
}
}
if !(part.ContentType == "text/plain" || part.ContentType == "text/html") {
goto Skip
}
headersBuf.Reset()
if err := writeHeaders(headersBuf, mailHeader, part.ContentType); err != nil {
logger.Warn("msg", "error writing headers", "error", err)
goto Skip
}
br = bufio.NewReader(part.Body)
part.Body = br
if part.ContentType == "text/html" {
first, err := br.Peek(br.Buffered())
if err != nil {
logger.Warn("msg", "cannot read", "source", br, "error", err)
goto Skip
}
if i := bytes.Index(first, []byte("<body>")); i >= 0 {
part.Body = io.MultiReader(
&io.LimitedReader{R: br, N: int64(i)},
bytes.NewReader(headersBuf.Bytes()),
bytes.NewReader(first[i:]),
br,
)
} else {
part.Body = io.MultiReader(bytes.NewReader(headersBuf.Bytes()), br)
}
} else {
part.Body = io.MultiReader(bytes.NewReader(headersBuf.Bytes()), part.Body)
}
Skip:
outch <- part
}
}
func (h ciHeader) Date() (time.Time, error) {
return mail.Header(h).Date()
}
func analyzeEmail(n *models.EmailNode, input []byte) error {
// Figure out if newlines are \n or \r\n
var nl []byte
firstNewline := bytes.Index(input, []byte("\n"))
if firstNewline-1 >= 0 && input[firstNewline-1] == '\r' {
nl = []byte("\r\n")
} else {
nl = []byte("\n")
}
doubleNl := append(nl, nl...)
// Parse the header
tp := textproto.NewReader(bufio.NewReader(bytes.NewReader(input)))
headers, err := tp.ReadMIMEHeader()
if err != nil {
return err
}
n.Headers = mail.Header(headers)
// Calculate where the parts are
seperator := bytes.Index(input, doubleNl)
n.HeaderPosition = [2]int{n.BasePosition, n.BasePosition + seperator + len(nl)}
n.BodyPosition = [2]int{n.BasePosition + seperator + len(nl), n.BasePosition + len(input)}
// Check if the node is multipart
ctype := headers.Get("Content-Type")
if ctype == "" {
ctype = "text/plain"
}
media, params, err := mime.ParseMediaType(ctype)
if err != nil {
return err
}
if !strings.HasPrefix(media, "multipart/") {
return nil
}
if _, ok := params["boundary"]; !ok {
return nil
}
// Prepare children slice
n.Children = []*models.EmailNode{}
// Prepare byte slices for comparsion
var (
dashBoundaryDashNl = []byte("--" + params["boundary"] + "--" + string(nl))
dashBoundaryDash = dashBoundaryDashNl[:len(dashBoundaryDashNl)-2]
dashBoundaryNl = []byte("--" + params["boundary"] + string(nl))
)
// Analyze where the multipart body starts
start := bytes.Index(input, dashBoundaryNl)
end := bytes.Index(input, dashBoundaryDashNl)
if end == -1 {
end = bytes.Index(input, dashBoundaryDash)
}
// Trim the data to only get the body without the wrappers
bodyBaseIndex := n.BasePosition + start + len(dashBoundaryNl)
partsData := input[start+len(dashBoundaryNl) : end]
// Split the parts into multipart body parts
for _, part := range bytes.Split(partsData, dashBoundaryNl) {
np := &models.EmailNode{
BasePosition: bodyBaseIndex,
}
if err := analyzeEmail(np, part); err != nil {
return err
}
bodyBaseIndex += len(part) + len(dashBoundaryNl)
n.Children = append(n.Children, np)
}
return nil
}
// recursivley parse a multipart.Part
// will always return a *MessageNode, even on encountering errors. You will need
// good switching code to work with message nodes
// If errors occur whilst creating the sub-tree, such errors will be
// returned in a ChildError mapping. You may ignore such errors for the most
func MessageToNode(msg *mail.Message) (*MessageNode, error) {
debug("starting message to node for message: ", msg)
body, backup := backupReader(msg.Body)
node := &MessageNode{
Header: msg.Header,
Body: backup,
}
ct, params, err := mime.ParseMediaType(msg.Header.Get(ContentType))
if err == nil {
node.ContentType = ct
node.ContentTypeParams = params
if boundry, ok := params[Boundary]; ok {
// parse the data as a multipart!
multi := multipart.NewReader(body, boundry)
child_err_occured := false
child_errs := make(ChildError)
node.Children = make([]*MessageNode, 0, 5)
// read new Parts off the multipart parser
for part, err := multi.NextPart(); err != io.EOF; part, err = multi.NextPart() {
// check errors
if err != nil {
debug("error occured while making part: ", part, " error: ", err)
// restore backup and abort parsing
return node, fmt.Errorf("Aborted Multipart#NextPart at error: %v", err)
}
// create message so we can recurse
sub_msg := &mail.Message{
Header: mail.Header(part.Header),
Body: NewMarshalReader(part),
}
// create child node
child, err := MessageToNode(sub_msg)
// store any errors
if err != nil {
child_err_occured = true
child_errs[child] = err
}
// store child
node.Children = append(node.Children, child)
} // end enumerate parts
// don't need this data anymore, since we have the children
node.Body = nil
if child_err_occured {
return node, child_errs
}
} // end has-boundry-parse-sections
} // end decoded-mime-type
if node.Body != nil {
// make sure body has text export type
// so the browser doesn't have to do MIME detection
node.Body.MarshalAsString = IsText(node)
}
return node, nil
}
// AddressList parses the named header field as a list of addresses.
func (h Header) AddressList(key string) ([]*mail.Address, error) {
return mail.Header(h).AddressList(key)
}