Annotation of libelwix/inc/elwix/anet.h, revision 1.13
1.1 misho 1: /*************************************************************************
2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.13 ! misho 6: * $Id: anet.h,v 1.12.2.1 2016/08/02 11:57:59 misho Exp $
1.1 misho 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:
1.10 misho 15: Copyright 2004 - 2016
1.1 misho 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 {
1.8 misho 51: u_int8_t octet[6];
1.1 misho 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;
1.10 misho 61: #ifndef __linux__
1.1 misho 62: struct sockaddr_dl sdl;
1.10 misho 63: #endif
1.1 misho 64: } sockaddr_t;
65: #define E_SOCKADDR_INIT { .ss = { 0 } }
1.13 ! misho 66: #define E_SOCKADDR_MAX MIN(sizeof(sockaddr_t), 0xff)
1.1 misho 67:
1.3 misho 68: typedef union {
69: union {
70: in_addr_t s_addr;
71: u_char s4_addr[sizeof(in_addr_t)];
72: } in;
73: struct in6_addr in6;
74: } inaddr_t;
75:
76: typedef struct {
77: sockaddr_t addr;
78: inaddr_t mask;
79: } netaddr_t;
80: #define E_CIDRMASK(x) htonl((((1 << (x)) - 1) << (32 - (x))) & 0xFFFFFFFF)
81:
1.1 misho 82:
83: /*
84: * e_usleep() - usleep() replacement for ELWIX
85: *
86: * @usec = microseconds for sleep
87: * return: -1 interrupted by signal or 0 ok
88: */
1.2 misho 89: int e_usleep(unsigned int usec);
1.10 misho 90: #ifndef __linux__
1.1 misho 91: /*
1.8 misho 92: * e_link_addr() - String ethernet address to link address
93: *
94: * @mac = ethernet address
95: * @sdl = link address
96: * return: -1 error or 0 ok
97: */
98: int e_link_addr(const char *mac, struct sockaddr_dl * __restrict sdl);
99: /*
1.5 misho 100: * e_link_ntoa() - String ethernet address from link address
101: *
102: * @sdl = link address
103: * return: =NULL error or !=NULL ethernet address, should be e_free()
104: */
105: char *e_link_ntoa(const struct sockaddr_dl *sdl);
1.10 misho 106: #endif
1.5 misho 107: /*
1.1 misho 108: * e_ether_ntoa() - Convert ethernet address to string
109: *
110: * @n = ethernet address structure, like struct ether_addr
111: * @a = string
112: * @len = string length
113: * return: NULL error or !=NULL string a
114: */
1.6 misho 115: char *e_ether_ntoa(const ether_addr_t * __restrict n, char * __restrict a, int len);
1.1 misho 116: /*
117: * e_ether_aton() - Convert string to ethernet address
118: *
119: * @a = string
120: * @e = ethernet address structure, like struct ether_addr
121: * return: NULL error or !=NULL ethernet address structure
122: */
1.6 misho 123: ether_addr_t *e_ether_aton(const char *a, ether_addr_t * __restrict e);
1.1 misho 124: /*
125: * e_n2port() - Extract port from network structure
126: *
127: * @addr = Address
128: * return: 0 not supported family type or port number
129: */
1.2 misho 130: unsigned short e_n2port(sockaddr_t * __restrict addr);
1.1 misho 131: /*
132: * e_n2addr() - Extract address from network structure
133: *
134: * @addr = Address
135: * @val = Value for store string address
136: * return: NULL error or !=NULL string address from val
137: */
138: const char *e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val);
139: /*
140: * e_gethostbyname() - Get host and port and make network structure
141: *
142: * @psHost = Hostname
143: * @port = Port
144: * @addr = Network address structure
1.12 misho 145: * return: 0 is error or >0 length of network structure
1.1 misho 146: */
1.11 misho 147: socklen_t e_gethostbyname(const char *psHost, unsigned short port,
1.1 misho 148: sockaddr_t * __restrict addr);
1.12 misho 149: /*
150: * e_addrlen() - Get address length from network structure
151: *
152: * @addr = address
153: * return: 0 is error or >0 length of network structure
154: */
155: socklen_t e_addrlen(const sockaddr_t *addr);
1.1 misho 156: /*
157: * e_addrcmp() - Compare network addresses
158: *
159: * @a = 1st address
160: * @b = 2nd address
161: * @p = compare and ports, if family is AF_INET or AF_INET6
162: * return: 0 is equal or !=0 is different
163: */
164: int e_addrcmp(sockaddr_t * __restrict a, sockaddr_t * __restrict b, int p);
1.3 misho 165: /*
166: * e_innet() - Test address match in network
167: *
168: * @net = network
169: * @addr = address
170: * return: -1 error, 0 match or 1 not match
171: */
172: int e_innet(netaddr_t * __restrict net, inaddr_t * __restrict addr);
1.4 misho 173: /*
174: * e_getnet() - Get network from string
175: *
176: * @net = Network string (format: <net[/cidr]>)
177: * return: NULL error or !=NULL network should be e_free()
178: */
179: netaddr_t *e_getnet(const char *net);
1.6 misho 180: /*
181: * e_ether_addr() - Get or set ethernet address from interface name
182: *
183: * @ifname = interface name
1.10 misho 184: * @addr = if addr is !=NULL then set new ethernet address
185: * return: NULL error or !=NULL get current ethernet address should be e_free()
1.6 misho 186: */
187: ether_addr_t *e_ether_addr(const char *ifname, ether_addr_t * __restrict addr);
1.8 misho 188: /*
189: * e_get1stiface() - Get first interface of host
190: *
191: * @szIface = interface string buffer
192: * @iflen = size of interface buffer
193: * return: -1 error or 0 ok
194: */
195: int e_get1stiface(char *szIface, int iflen);
1.10 misho 196: #ifndef __linux__
1.8 misho 197: /*
198: * e_getifacebyname() - Get interface and make network structure
199: *
200: * @psIface = Interface, if =NULL first interface
201: * @addr = Network address structure
202: * return: NULL error or !=NULL network structure
203: */
204: sockaddr_t *e_getifacebyname(const char *psIface, sockaddr_t * __restrict addr);
205: /*
206: * e_getlinkbyname() - Get host ethernet address and make network structure
207: *
208: * @psHost = Host ethernet address
209: * @addr = Network address structure
210: * return: NULL error or !=NULL network structure
211: */
212: sockaddr_t *e_getlinkbyname(const char *psHost, sockaddr_t * __restrict addr);
213: /*
214: * e_getlinkbyether() - Get ethernet address and make network structure
215: *
216: * @mac = Ethernet address
217: * @idx = Interface index
218: * @type = Interface type
219: * @iface = Interface name
220: * @addr = Network address structure
221: * return: NULL error or !=NULL network structure
222: */
223: sockaddr_t *e_getlinkbyether(const ether_addr_t * __restrict mac, unsigned short idx,
224: unsigned char type, const char *iface, sockaddr_t * __restrict addr);
225: #define e_getlinkbymac(_mac, _addr) e_getlinkbyether((_mac), 0, 0, NULL, (_addr))
1.10 misho 226: #endif
1.1 misho 227:
228:
229: #endif
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