www.pudn.com > libsmtp.zip > libsmtp_error.c

/*
  This is a library to send mail via SMTP
   
Copyright ?2001 Kevin Read 

This software is available under the GNU Lesser Public License as described
in the COPYING file.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Kevin Read 
Thu Aug 16 2001 */

#include 

#include "../config.h"
#include "libsmtp.h"

#ifdef WITH_MIME
  #include "libsmtp_mime.h"
#endif

const char *libsmtp_strerr_strings_fatal[] = {
  "No error",   /* 0 */
  "Unable to create local socket",
  "Mailserver unknown",
  "Connection to mailserver failed",
  "Unable to read from socket, fatal", /* 4 */
  "Mailserver didn't greet correctly conforming to RFC, we might not be welcome",
  "Can't find our hostname",
  "Unable to send to socket", /* 7 */
  "Server won't accept sender",
  "Server rejected mail!!",
  "Server won't accept DATA command"
};

const char *libsmtp_strerr_strings_nonfatal[] = {
  "Error reading from socket",   /* 1024 */
  "Error sending to socket",
  "Bad arguments passed to libsmtp_function",
  "Server won't accept recipient",
  "Bad stage in libsmtp",
  "Server rejected QUIT command :-)"
};

const char *libsmtp_undef_errstr = "Undefined error";  

#define LIBSMTP_MAX_FATAL_ERRNO 9
#define LIBSMTP_MIN_NONFATAL_ERRNO 1024
#define LIBSMTP_MAX_NONFATAL_ERRNO 1029

const char *libsmtp_strerr (struct libsmtp_session_struct *libsmtp_session)
{
  /* This shouldn't really happen, but this is not C++, we can't prevent
     non-libsmtp functions from writing to these ...
     There are no higher error codes than the MIME ones */
  #ifdef WITH_MIME
    if (libsmtp_session->ErrorCode > LIBSMTP_MAX_MIME_ERRNO)
    {
      printf ("Undefined error code: %d\n", libsmtp_session->ErrorCode);
      return libsmtp_undef_errstr;
    }
  #else
    /* Or the nonfatal ones when not using MIME stuff */
    if (libsmtp_session->ErrorCode > LIBSMTP_MAX_NONFATAL_ERRNO)
    {
      printf ("Undefined error code: %d\n", libsmtp_session->ErrorCode);
      return libsmtp_undef_errstr;
    }
  #endif
  
  /* And there are no valid error codes between fatal and nonfatal */
  if ((libsmtp_session->ErrorCode > LIBSMTP_MAX_FATAL_ERRNO) && \
      (libsmtp_session->ErrorCode < LIBSMTP_MIN_NONFATAL_ERRNO))
  {
    printf ("Undefined error code: %d\n", libsmtp_session->ErrorCode);
    return libsmtp_undef_errstr;
  }
  
  /* Now send back the pointer - we have two tables */
  if (libsmtp_session->ErrorCode > LIBSMTP_MAX_FATAL_ERRNO)
    return libsmtp_strerr_strings_nonfatal [libsmtp_session->ErrorCode-1024];
  else
    return libsmtp_strerr_strings_fatal [libsmtp_session->ErrorCode];
}

int libsmtp_errno (struct libsmtp_session_struct *libsmtp_session)
{
  /* This shouldn't really happen, but this is not C++, we can't prevent
     non-libsmtp functions from writing to these ...
     There are no higher error codes than the nonfatal ones */
  if (libsmtp_session->ErrorCode > LIBSMTP_MAX_NONFATAL_ERRNO)
    return LIBSMTP_UNDEFERR;
  
  /* And there are no valid error codes betwenn fatal and nonfatal */
  if ((libsmtp_session->ErrorCode > LIBSMTP_MAX_FATAL_ERRNO) && \
      (libsmtp_session->ErrorCode < LIBSMTP_MIN_NONFATAL_ERRNO))
    return LIBSMTP_UNDEFERR;

  return libsmtp_session->ErrorCode;
}