// invokeMessageCallback extracts the relevant data from the passed FETCH response
// and invokes the user-provided callback.
func (w *IMAPSource) invokeMessageCallback(msgInfo *imap.MessageInfo) error {
logger.Debugf("handling mail uid=%d", msgInfo.Attrs["UID"])
flags := imap.AsFlagSet(msgInfo.Attrs["FLAGS"])
idate := imap.AsDateTime(msgInfo.Attrs["INTERNALDATE"])
mailBytes := imap.AsBytes(msgInfo.Attrs["RFC822"])
mailLiteral := imap.NewLiteral(mailBytes)
logger.Debugf("invoking message transformer")
err := w.callbackFunc(flags, &idate, mailLiteral)
if err == nil {
logger.Debugf("message transformation successful")
} else {
logger.Warningf("message transformation failed: %s", err)
}
return err
}
/**
* Creates a new mail on the IMAP server with the given header information, flags and content
* (body).
* ATTENTION: DOES NOT LOCK THE IMAP CONNECTION! => Has to be wrapped into a mutex lock method
*/
func (mc *MailCon) createMailInFolder_internal(h *Header, f *Flags,
content string) (uid uint32, err error) {
var (
// Create the msg:
// Header info + empty line + content + empty line
msg string = strings.Join([]string{SerializeHeader(h), "", content, ""}, "\r\n")
lit imap.Literal = imap.NewLiteral([]byte(msg))
mbox string = fmt.Sprintf("%s%s%s", mc.mailbox, mc.delim, h.Folder)
cmd *imap.Command
resp *imap.Response
)
// 1) Execute the actual append mail command
if cmd, err = mc.client.Append(mbox, imap.AsFlagSet(SerializeFlags(f)), &h.Date, lit); err != nil {
return 0, err
}
if resp, err = cmd.Result(imap.OK); err != nil {
return 0,
fmt.Errorf("[watney] ERROR waiting for result of append command\n\t%s\n", err.Error())
}
// 2) Process the server response and extract the message UID of the previously added mail
// The Response is an 'APPENDUID' with the fields:
// [0] APPENDUID:string | [1] internaldate:long64 | [2] UID:uint32
return imap.AsNumber(resp.Fields[2]), err
}