libelwix/inc/elwix/anet.h - view

File: [ELWIX - Embedded LightWeight unIX -] / libelwix / inc / elwix / anet.h
Revision 1.13: download - view: text, annotated - select for diffs - revision graph
Tue Aug 2 12:03:56 2016 UTC (8 years, 3 months ago) by misho
Branches: MAIN
CVS tags: elwix4_4, HEAD, ELWIX4_3

version 4.3

/************************************************************************* * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org> * by Michael Pounov <misho@elwix.org> * * $Author: misho $ * $Id: anet.h,v 1.13 2016/08/02 12:03:56 misho Exp $ * ************************************************************************** The ELWIX and AITNET software is distributed under the following terms: All of the documentation and software included in the ELWIX and AITNET Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> Copyright 2004 - 2016 by Michael Pounov <misho@elwix.org>. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by Michael Pounov <misho@elwix.org> ELWIX - Embedded LightWeight unIX and its contributors. 4. Neither the name of AITNET nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef __ANET_H #define __ANET_H struct e_ether_addr { u_int8_t octet[6]; }; typedef struct e_ether_addr ether_addr_t; typedef union { struct sockaddr_storage ss; struct sockaddr sa; struct sockaddr_un sun; struct sockaddr_in sin; struct sockaddr_in6 sin6; #ifndef __linux__ struct sockaddr_dl sdl; #endif } sockaddr_t; #define E_SOCKADDR_INIT { .ss = { 0 } } #define E_SOCKADDR_MAX MIN(sizeof(sockaddr_t), 0xff) typedef union { union { in_addr_t s_addr; u_char s4_addr[sizeof(in_addr_t)]; } in; struct in6_addr in6; } inaddr_t; typedef struct { sockaddr_t addr; inaddr_t mask; } netaddr_t; #define E_CIDRMASK(x) htonl((((1 << (x)) - 1) << (32 - (x))) & 0xFFFFFFFF) /* * e_usleep() - usleep() replacement for ELWIX * * @usec = microseconds for sleep * return: -1 interrupted by signal or 0 ok */ int e_usleep(unsigned int usec); #ifndef __linux__ /* * e_link_addr() - String ethernet address to link address * * @mac = ethernet address * @sdl = link address * return: -1 error or 0 ok */ int e_link_addr(const char *mac, struct sockaddr_dl * __restrict sdl); /* * e_link_ntoa() - String ethernet address from link address * * @sdl = link address * return: =NULL error or !=NULL ethernet address, should be e_free() */ char *e_link_ntoa(const struct sockaddr_dl *sdl); #endif /* * e_ether_ntoa() - Convert ethernet address to string * * @n = ethernet address structure, like struct ether_addr * @a = string * @len = string length * return: NULL error or !=NULL string a */ char *e_ether_ntoa(const ether_addr_t * __restrict n, char * __restrict a, int len); /* * e_ether_aton() - Convert string to ethernet address * * @a = string * @e = ethernet address structure, like struct ether_addr * return: NULL error or !=NULL ethernet address structure */ ether_addr_t *e_ether_aton(const char *a, ether_addr_t * __restrict e); /* * e_n2port() - Extract port from network structure * * @addr = Address * return: 0 not supported family type or port number */ unsigned short e_n2port(sockaddr_t * __restrict addr); /* * e_n2addr() - Extract address from network structure * * @addr = Address * @val = Value for store string address * return: NULL error or !=NULL string address from val */ const char *e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val); /* * e_gethostbyname() - Get host and port and make network structure * * @psHost = Hostname * @port = Port * @addr = Network address structure * return: 0 is error or >0 length of network structure */ socklen_t e_gethostbyname(const char *psHost, unsigned short port, sockaddr_t * __restrict addr); /* * e_addrlen() - Get address length from network structure * * @addr = address * return: 0 is error or >0 length of network structure */ socklen_t e_addrlen(const sockaddr_t *addr); /* * e_addrcmp() - Compare network addresses * * @a = 1st address * @b = 2nd address * @p = compare and ports, if family is AF_INET or AF_INET6 * return: 0 is equal or !=0 is different */ int e_addrcmp(sockaddr_t * __restrict a, sockaddr_t * __restrict b, int p); /* * e_innet() - Test address match in network * * @net = network * @addr = address * return: -1 error, 0 match or 1 not match */ int e_innet(netaddr_t * __restrict net, inaddr_t * __restrict addr); /* * e_getnet() - Get network from string * * @net = Network string (format: <net[/cidr]>) * return: NULL error or !=NULL network should be e_free() */ netaddr_t *e_getnet(const char *net); /* * e_ether_addr() - Get or set ethernet address from interface name * * @ifname = interface name * @addr = if addr is !=NULL then set new ethernet address * return: NULL error or !=NULL get current ethernet address should be e_free() */ ether_addr_t *e_ether_addr(const char *ifname, ether_addr_t * __restrict addr); /* * e_get1stiface() - Get first interface of host * * @szIface = interface string buffer * @iflen = size of interface buffer * return: -1 error or 0 ok */ int e_get1stiface(char *szIface, int iflen); #ifndef __linux__ /* * e_getifacebyname() - Get interface and make network structure * * @psIface = Interface, if =NULL first interface * @addr = Network address structure * return: NULL error or !=NULL network structure */ sockaddr_t *e_getifacebyname(const char *psIface, sockaddr_t * __restrict addr); /* * e_getlinkbyname() - Get host ethernet address and make network structure * * @psHost = Host ethernet address * @addr = Network address structure * return: NULL error or !=NULL network structure */ sockaddr_t *e_getlinkbyname(const char *psHost, sockaddr_t * __restrict addr); /* * e_getlinkbyether() - Get ethernet address and make network structure * * @mac = Ethernet address * @idx = Interface index * @type = Interface type * @iface = Interface name * @addr = Network address structure * return: NULL error or !=NULL network structure */ sockaddr_t *e_getlinkbyether(const ether_addr_t * __restrict mac, unsigned short idx, unsigned char type, const char *iface, sockaddr_t * __restrict addr); #define e_getlinkbymac(_mac, _addr) e_getlinkbyether((_mac), 0, 0, NULL, (_addr)) #endif #endif