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mail.go
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mail.go
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package utils
import (
"fmt"
"io"
"io/ioutil"
"log"
"path/filepath"
"github.com/emersion/go-message/mail"
"github.com/emersion/go-imap"
"github.com/emersion/go-imap/client"
_ "github.com/emersion/go-message/charset"
)
func ScanMail() bool {
Logger("Loading config ...")
config, err := LoadConfig(GetDir())
if err != nil {
Logger("Can't load config")
log.Fatal("")
}
Logger("Config loaded!")
Logger("Loading database ...")
db := SetupDatabase()
if db != true {
Logger("Loading database failed!")
log.Fatal("")
}
Logger("Database loaded!")
Logger("Connecting to server ...")
var c *client.Client
if config.StartTls == "true" {
c, err = client.Dial(config.MailHost + ":" + config.MailPort)
if err != nil {
Logger(fmt.Sprintf("Can't connected to server, error is: %s", err))
log.Fatal()
}
} else {
c, err = client.DialTLS(config.MailHost+":"+config.MailPort, nil)
if err != nil {
Logger(fmt.Sprintf("Can't connected to server, error is: %s", err))
log.Fatal()
}
}
Logger("Connected")
defer c.Logout()
// Login
Logger("Logging in ...")
err = c.Login(config.MailUsername, config.MailPassword)
if err != nil {
Logger(fmt.Sprintf("Can't login to server, error is: %s", err))
}
Logger("Logged in!")
// Select INBOX
mbox, err := c.Select(config.MailFolder, false)
if err != nil {
Logger(fmt.Sprintf("Cant retrieve the mail folder, err was: %s", err))
}
Logger("Scanning folder ...")
// Get ALL messages.
seqset := new(imap.SeqSet)
seqset.AddRange(1, mbox.Messages)
section := &imap.BodySectionName{}
messages := make(chan *imap.Message, mbox.Messages)
done := make(chan error, 1)
// Fetch the message with go routines.
go func() {
done <- c.Fetch(seqset, []imap.FetchItem{section.FetchItem(), imap.FetchUid}, messages)
}()
for msg := range messages {
// Don't process old mails.
if MailExists(config.MailFolder, msg.Uid) == true {
continue
}
// Create a new mail reader
mr, err := mail.CreateReader(msg.GetBody(section))
if err != nil {
Logger(err.Error())
}
// Process each message's part
for {
p, err := mr.NextPart()
if err == io.EOF {
break
} else if err != nil {
Logger(err.Error())
}
switch h := p.Header.(type) {
case *mail.AttachmentHeader:
// log the message in database.
InsertMail(config.MailFolder, msg.Uid)
filename, _ := h.Filename()
Logger(fmt.Sprintf("Saving attachment: %s", filename))
b, _ := ioutil.ReadAll(p.Body)
attachment := filepath.Join(GetAttachmentDir(), filename)
err := ioutil.WriteFile(attachment, b, 0777)
if err != nil {
Logger(err.Error())
}
Logger(fmt.Sprintf("Attachment saved: %s", filename))
}
}
}
Logger("Scan completed!")
return true
}