saop/utils.h

/**
 * saop: smtp authentication over pop3
 * Copyright (C) 2007 Juan José Gutiérrez de Quevedo <juanjo@iteisa.com>
 *
 * 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; version 2 of the License
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * @author Juan José Gutiérrez de Quevedo <juanjo@iteisa.com>
 */
#ifndef UTILS_H
#define UTILS_H

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#ifdef WIN32
  #include <winsock2.h>
  #include <ws2tcpip.h>
#else
  #include <sys/socket.h>
  #include <netdb.h>
  #include <arpa/inet.h>
  #include <netinet/in.h>
  #include <sys/select.h>
#endif /* WIN32 */

#define BUFLEN 512 /* max length of strings */

#ifndef MSG_NOSIGNAL
  #define MSG_NOSIGNAL 0
#endif /* MSG_NOSIGNAL */

/* utility macros */
#define cmp(x,y) (NULL==x||NULL==y||strncasecmp(x,y,strlen(y)))
#define write_string(x,y) do { debug(y); debug("Writing string " #y " to socket " #x); send(x,y,strlen(y),MSG_NOSIGNAL); send(x,"\r\n",2,MSG_NOSIGNAL); } while(0)
#define condfree(x) do { debug("Freeing memory block " #x); if(NULL!=x) free(x); x=NULL; } while(0)
#ifndef WIN32
  #define safestrdup(x,y) do { assert(NULL!=y); if(NULL==(x=strndup(y,strlen(y)))) { perror("Error duplicating string"); exit(-1); } } while(0)
  #define closeskt(x); do { if(-1!=x) { debug("Closing socket " #x); close(x); x=-1; } } while(0)
#else
  #define safestrdup(x,y) do { assert(NULL!=y); if(NULL==(x=strdup(y))) { perror("Error duplicating string"); exit(-1); } } while(0)
  #define closeskt(x); do { if(-1!=x) { debug("Closing socket " #x); closesocket(x); x=-1; } } while(0)
#endif /* WIN32 */
#define _(x) x
#define MAX(x,y) (((x)>(y))?(x):(y))
#define free_and_read_string(x,y) do { condfree(x); x=read_string(y); } while(0)
#ifdef DEBUG
  #define debug(x) do { if(NULL==fsaopdebug) { fsaopdebug=fopen("c:\\saop.log","a"); } if(NULL!=fsaopdebug) { fprintf(fsaopdebug,"%s\n",x); fflush(fsaopdebug); } fprintf(stderr,"%s\n",x); fflush(stderr); } while(0)
#else
  #define debug(x) do {} while(0)
#endif /* DEBUG */

char *read_string(int);
int create_listening_socket(unsigned int);
int create_connected_socket(char *,unsigned int);
unsigned long resolve(char *);
unsigned char can_read(int,float);

#endif /* UTILS_H */