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 1.9.4.4 2016/05/14 19:55:52 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 - 2016
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 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: #ifndef __linux__
62: struct sockaddr_dl sdl;
63: #endif
64: } sockaddr_t;
65: #define E_SOCKADDR_INIT { .ss = { 0 } }
66:
67: typedef union {
68: union {
69: in_addr_t s_addr;
70: u_char s4_addr[sizeof(in_addr_t)];
71: } in;
72: struct in6_addr in6;
73: } inaddr_t;
74:
75: typedef struct {
76: sockaddr_t addr;
77: inaddr_t mask;
78: } netaddr_t;
79: #define E_CIDRMASK(x) htonl((((1 << (x)) - 1) << (32 - (x))) & 0xFFFFFFFF)
80:
81:
82: /*
83: * e_usleep() - usleep() replacement for ELWIX
84: *
85: * @usec = microseconds for sleep
86: * return: -1 interrupted by signal or 0 ok
87: */
88: int e_usleep(unsigned int usec);
89: #ifndef __linux__
90: /*
91: * e_link_addr() - String ethernet address to link address
92: *
93: * @mac = ethernet address
94: * @sdl = link address
95: * return: -1 error or 0 ok
96: */
97: int e_link_addr(const char *mac, struct sockaddr_dl * __restrict sdl);
98: /*
99: * e_link_ntoa() - String ethernet address from link address
100: *
101: * @sdl = link address
102: * return: =NULL error or !=NULL ethernet address, should be e_free()
103: */
104: char *e_link_ntoa(const struct sockaddr_dl *sdl);
105: #endif
106: /*
107: * e_ether_ntoa() - Convert ethernet address to string
108: *
109: * @n = ethernet address structure, like struct ether_addr
110: * @a = string
111: * @len = string length
112: * return: NULL error or !=NULL string a
113: */
114: char *e_ether_ntoa(const ether_addr_t * __restrict n, char * __restrict a, int len);
115: /*
116: * e_ether_aton() - Convert string to ethernet address
117: *
118: * @a = string
119: * @e = ethernet address structure, like struct ether_addr
120: * return: NULL error or !=NULL ethernet address structure
121: */
122: ether_addr_t *e_ether_aton(const char *a, ether_addr_t * __restrict e);
123: /*
124: * e_n2port() - Extract port from network structure
125: *
126: * @addr = Address
127: * return: 0 not supported family type or port number
128: */
129: unsigned short e_n2port(sockaddr_t * __restrict addr);
130: /*
131: * e_n2addr() - Extract address from network structure
132: *
133: * @addr = Address
134: * @val = Value for store string address
135: * return: NULL error or !=NULL string address from val
136: */
137: const char *e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val);
138: /*
139: * e_gethostbyname() - Get host and port and make network structure
140: *
141: * @psHost = Hostname
142: * @port = Port
143: * @addr = Network address structure
144: * return: NULL error or !=NULL network structure
145: */
146: sockaddr_t *e_gethostbyname(const char *psHost, unsigned short port,
147: sockaddr_t * __restrict addr);
148: /*
149: * e_addrcmp() - Compare network addresses
150: *
151: * @a = 1st address
152: * @b = 2nd address
153: * @p = compare and ports, if family is AF_INET or AF_INET6
154: * return: 0 is equal or !=0 is different
155: */
156: int e_addrcmp(sockaddr_t * __restrict a, sockaddr_t * __restrict b, int p);
157: /*
158: * e_innet() - Test address match in network
159: *
160: * @net = network
161: * @addr = address
162: * return: -1 error, 0 match or 1 not match
163: */
164: int e_innet(netaddr_t * __restrict net, inaddr_t * __restrict addr);
165: /*
166: * e_getnet() - Get network from string
167: *
168: * @net = Network string (format: <net[/cidr]>)
169: * return: NULL error or !=NULL network should be e_free()
170: */
171: netaddr_t *e_getnet(const char *net);
172: /*
173: * e_ether_addr() - Get or set ethernet address from interface name
174: *
175: * @ifname = interface name
176: * @addr = if addr is !=NULL then set new ethernet address
177: * return: NULL error or !=NULL get current ethernet address should be e_free()
178: */
179: ether_addr_t *e_ether_addr(const char *ifname, ether_addr_t * __restrict addr);
180: /*
181: * e_get1stiface() - Get first interface of host
182: *
183: * @szIface = interface string buffer
184: * @iflen = size of interface buffer
185: * return: -1 error or 0 ok
186: */
187: int e_get1stiface(char *szIface, int iflen);
188: #ifndef __linux__
189: /*
190: * e_getifacebyname() - Get interface and make network structure
191: *
192: * @psIface = Interface, if =NULL first interface
193: * @addr = Network address structure
194: * return: NULL error or !=NULL network structure
195: */
196: sockaddr_t *e_getifacebyname(const char *psIface, sockaddr_t * __restrict addr);
197: /*
198: * e_getlinkbyname() - Get host ethernet address and make network structure
199: *
200: * @psHost = Host ethernet address
201: * @addr = Network address structure
202: * return: NULL error or !=NULL network structure
203: */
204: sockaddr_t *e_getlinkbyname(const char *psHost, sockaddr_t * __restrict addr);
205: /*
206: * e_getlinkbyether() - Get ethernet address and make network structure
207: *
208: * @mac = Ethernet address
209: * @idx = Interface index
210: * @type = Interface type
211: * @iface = Interface name
212: * @addr = Network address structure
213: * return: NULL error or !=NULL network structure
214: */
215: sockaddr_t *e_getlinkbyether(const ether_addr_t * __restrict mac, unsigned short idx,
216: unsigned char type, const char *iface, sockaddr_t * __restrict addr);
217: #define e_getlinkbymac(_mac, _addr) e_getlinkbyether((_mac), 0, 0, NULL, (_addr))
218: #endif
219:
220:
221: #endif
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