Thread: Parsing e-mail headers for subject field

Hi,
I'm trying to make a small e-mail client that will allow me to browse through the messages on my account and delete them if I wish. I've managed to get Winsock up and running (no easy feat, I can tell you ) and the server accepts my username and password.

What I want to do then is to go through each message on the server, get the Subject line and add it to a list box. My code for getting the Subject line is thus:-

Code:

(int iStatus = current position in retrieval process (5 = receiving messages))
(char *g_szBuffer = input buffer from recv())
(char g_szTemp[256] = temporary string)
(HWND g_hwndList = window handle for list box)
(long lCurMsg = current message being received)
(long lCount = total number of messages)

if (iStatus == 5)
{
   char *cSubjectPos, *cSubjectEnd;
   cSubjectPos = strstr(g_szBuffer, "Subject:");
   if (cSubjectPos != NULL)
   {
      cSubjectEnd = strchr(cSubjectPos, '\r')
      if (cSubjectEnd != NULL)
      {
         *cSubjectEnd = '\0';
         SendMessage(g_hwndList, LB_ADDSTRING, 0, (LPARAM)cSubjectPos+9);
         wsprintf(g_szTemp, "RETR %ld\r\n", lCurMsg);
         lCurMsg++;
         send(g_Socket, g_szTemp, strlen(g_szTemp), 0);
         if (lCurMsg > lCount)
            iStatus = 6;
      }
   }
}

Unfortunately, while the "Subject:" string is found, the carriage return character isn't, for some reason. Has anyone else done this or can suggest a different way of doing it?

Or even show me what I'm doing wrong, that'd be nice

Ah, I've seen the light that strtok() provides in this situation, so theoretically I SHOULD get the Subject line quite easily. However, I don't seem to account for lines split accross packets of data, so that causes issues.
Is there a more reliable way of getting it?