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Sourcecode: masqmail version File versions

interface.c

/*  MasqMail
    Copyright (C) 2000 Oliver Kurth

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

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

#include "masqmail.h"

/* define if you get problems... */
/*#define SOCKADDR_OLD 1*/

gboolean init_sockaddr(struct sockaddr_in *name, interface *iface)
{
  struct hostent *he;
  struct in_addr ia;
  
#ifdef SOCKADDR_OLD
  /* here I tried to be intelligent and failed. */
  if(isalpha(iface->address[0])){
    if ((he = gethostbyname(iface->address)) == NULL) {
      logwrite(LOG_ALERT,
             "local address '%s' unknown. (deleting)\n",
             iface->address);
      return FALSE;
    }
    memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
  }else if(isdigit(iface->address[0])){
    if(inet_aton(iface->address, &ia)){
      memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
    }else{
      logwrite(LOG_ALERT,
             "invalid address '%s': inet_aton() failed (deleting)\n",
             iface->address);
      return FALSE;
    }
  }else{
    logwrite(LOG_ALERT,
           "invalid address '%s', should begin with a aphanumeric (deleting)\n",
           iface->address);
    return FALSE;
  }
#else
  /* this is how others to it. I follow the crowd... */
  if(inet_aton(iface->address, &ia) != 0){
    /* IP address */
    memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
  }else{
    if ((he = gethostbyname(iface->address)) == NULL) {
      logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);
      return FALSE;
    }
    memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
  }
#endif
  name->sin_family = AF_INET;
  name->sin_port = htons(iface->port);

  return TRUE;
}

int make_server_socket(interface *iface)
{
  int sock = -1;
  struct sockaddr_in server;
        
  memset(&server, 0, sizeof(struct sockaddr_in));

  /* Create the socket. */
  sock = socket (PF_INET, SOCK_STREAM, 0);
  if (sock < 0){
    logwrite(LOG_ALERT, "socket: %s\n", strerror(errno));
    return -1;
  }
        
  if(init_sockaddr(&server, iface)){
    /* bind the socket */
    if (bind (sock, (struct sockaddr *) &server, sizeof (server)) < 0){
      logwrite(LOG_ALERT, "bind: %s\n", strerror(errno));
      return -1;
    }
  }else{
    close(sock);
    return -1;
  }
        
  return sock;
}

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