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added CIDR convert macro

    1: /*************************************************************************
    2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
    3: *  by Michael Pounov <misho@elwix.org>
    4: *
    5: * $Author: misho $
    6: * $Id: anet.h,v 1.2.2.1 2013/06/03 10:52:28 misho Exp $
    7: *
    8: **************************************************************************
    9: The ELWIX and AITNET software is distributed under the following
   10: terms:
   11: 
   12: All of the documentation and software included in the ELWIX and AITNET
   13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
   14: 
   15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
   16: 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
   17: 
   18: Redistribution and use in source and binary forms, with or without
   19: modification, are permitted provided that the following conditions
   20: are met:
   21: 1. Redistributions of source code must retain the above copyright
   22:    notice, this list of conditions and the following disclaimer.
   23: 2. Redistributions in binary form must reproduce the above copyright
   24:    notice, this list of conditions and the following disclaimer in the
   25:    documentation and/or other materials provided with the distribution.
   26: 3. All advertising materials mentioning features or use of this software
   27:    must display the following acknowledgement:
   28: This product includes software developed by Michael Pounov <misho@elwix.org>
   29: ELWIX - Embedded LightWeight unIX and its contributors.
   30: 4. Neither the name of AITNET nor the names of its contributors
   31:    may be used to endorse or promote products derived from this software
   32:    without specific prior written permission.
   33: 
   34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
   35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   44: SUCH DAMAGE.
   45: */
   46: #ifndef __ANET_H
   47: #define __ANET_H
   48: 
   49: 
   50: struct e_ether_addr {
   51: 	u_int8_t ether_addr_octet[6];
   52: };
   53: typedef struct e_ether_addr ether_addr_t;
   54: 
   55: typedef union {
   56: 	struct sockaddr_storage	ss;
   57: 	struct sockaddr		sa;
   58: 	struct sockaddr_un	sun;
   59: 	struct sockaddr_in	sin;
   60: 	struct sockaddr_in6	sin6;
   61: 	struct sockaddr_dl	sdl;
   62: } sockaddr_t;
   63: #define E_SOCKADDR_INIT	{ .ss = { 0 } }
   64: 
   65: #define E_CIDRMASK(x)	((((1 << (x)) - 1) << (32 - (x))) & 0xFFFFFFFF)
   66: 
   67: 
   68: /*
   69:  * e_usleep() - usleep() replacement for ELWIX
   70:  *
   71:  * @usec = microseconds for sleep
   72:  * return: -1 interrupted by signal or 0 ok
   73:  */
   74: int e_usleep(unsigned int usec);
   75: /*
   76:  * e_ether_ntoa() - Convert ethernet address to string
   77:  *
   78:  * @n = ethernet address structure, like struct ether_addr
   79:  * @a = string
   80:  * @len = string length
   81:  * return: NULL error or !=NULL string a
   82:  */
   83: char *e_ether_ntoa(const struct e_ether_addr *n, char * __restrict a, int len);
   84: /*
   85:  * e_ether_aton() - Convert string to ethernet address
   86:  *
   87:  * @a = string
   88:  * @e = ethernet address structure, like struct ether_addr
   89:  * return: NULL error or !=NULL ethernet address structure
   90:  */
   91: struct e_ether_addr *e_ether_aton(const char *a, struct e_ether_addr *e);
   92: /*
   93:  * e_n2port() - Extract port from network structure
   94:  *
   95:  * @addr = Address
   96:  * return: 0 not supported family type or port number
   97:  */
   98: unsigned short e_n2port(sockaddr_t * __restrict addr);
   99: /*
  100:  * e_n2addr() - Extract address from network structure
  101:  *
  102:  * @addr = Address
  103:  * @val = Value for store string address
  104:  * return: NULL error or !=NULL string address from val
  105:  */
  106: const char *e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val);
  107: /*
  108:  * e_gethostbyname() - Get host and port and make network structure
  109:  *
  110:  * @psHost = Hostname
  111:  * @port = Port
  112:  * @addr = Network address structure
  113:  * return: NULL error or !=NULL network structure
  114:  */
  115: sockaddr_t *e_gethostbyname(const char *psHost, unsigned short port, 
  116: 		sockaddr_t * __restrict addr);
  117: /*
  118:  * e_addrcmp() - Compare network addresses
  119:  *
  120:  * @a = 1st address
  121:  * @b = 2nd address
  122:  * @p = compare and ports, if family is AF_INET or AF_INET6
  123:  * return: 0 is equal or !=0 is different
  124:  */
  125: int e_addrcmp(sockaddr_t * __restrict a, sockaddr_t * __restrict b, int p);
  126: 
  127: 
  128: #endif