github.com/jordwest/imap-server@v0.0.0-20200627020849-1cf758ba359f/conn/command_append.go (about)

     1  package conn
     2  
     3  import (
     4  	"strconv"
     5  
     6  	"github.com/jordwest/imap-server/types"
     7  )
     8  
     9  const (
    10  	appendArgMailbox int = 0
    11  	appendArgFlags   int = 1
    12  	appendArgDate    int = 2
    13  	appendArgLength  int = 3
    14  )
    15  
    16  // Add a new message to a mailbox
    17  func cmdAppend(args commandArgs, c *Conn) {
    18  	if !c.assertAuthenticated(args.ID()) {
    19  		return
    20  	}
    21  
    22  	mailboxName := args.Arg(appendArgMailbox)
    23  	mailbox, err := c.User.MailboxByName(mailboxName)
    24  	if err != nil {
    25  		c.writeResponse(args.ID(), "NO could not get mailbox")
    26  		return
    27  	}
    28  
    29  	length, err := strconv.ParseUint(args.Arg(appendArgLength), 10, 64)
    30  	if err != nil || length == 0 {
    31  		c.writeResponse(args.ID(), "BAD invalid length for message literal")
    32  		return
    33  	}
    34  
    35  	flagString := args.Arg(appendArgFlags)
    36  	flags := types.Flags(0)
    37  	if flagString != "" {
    38  		flags = types.FlagsFromString(flagString)
    39  	}
    40  
    41  	// Tell client to send the mail message
    42  	c.writeResponse("+", "go ahead, feed me your message")
    43  
    44  	// Read in the whole message
    45  	messageData, err := c.ReadFixedLength(int(length))
    46  	if err != nil {
    47  		return
    48  	}
    49  
    50  	msg := mailbox.NewMessage()
    51  	rawMsg, err := types.MessageFromBytes(messageData)
    52  	if err != nil {
    53  		c.writeResponse(args.ID(), "NO "+err.Error())
    54  		return
    55  	}
    56  	msg = msg.SetHeaders(rawMsg.Headers)
    57  	msg = msg.SetBody(rawMsg.Body)
    58  	msg = msg.OverwriteFlags(flags)
    59  
    60  	msg, err = msg.Save()
    61  	if err != nil {
    62  		c.writeResponse(args.ID(), "NO "+err.Error())
    63  		return
    64  	}
    65  
    66  	c.writeResponse(args.ID(), "OK APPEND completed")
    67  }