xref: /curl/lib/if2ip.h (revision 0199104e)
1 #ifndef HEADER_CURL_IF2IP_H
2 #define HEADER_CURL_IF2IP_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
11  *
12  * This software is licensed as described in the file COPYING, which
13  * you should have received as part of this distribution. The terms
14  * are also available at https://curl.se/docs/copyright.html.
15  *
16  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17  * copies of the Software, and permit persons to whom the Software is
18  * furnished to do so, under the terms of the COPYING file.
19  *
20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21  * KIND, either express or implied.
22  *
23  * SPDX-License-Identifier: curl
24  *
25  ***************************************************************************/
26 #include "curl_setup.h"
27 
28 /* IPv6 address scopes. */
29 #define IPV6_SCOPE_GLOBAL       0       /* Global scope. */
30 #define IPV6_SCOPE_LINKLOCAL    1       /* Link-local scope. */
31 #define IPV6_SCOPE_SITELOCAL    2       /* Site-local scope (deprecated). */
32 #define IPV6_SCOPE_UNIQUELOCAL  3       /* Unique local */
33 #define IPV6_SCOPE_NODELOCAL    4       /* Loopback. */
34 
35 #ifdef USE_IPV6
36 unsigned int Curl_ipv6_scope(const struct sockaddr *sa);
37 #else
38 #define Curl_ipv6_scope(x) 0
39 #endif
40 
41 typedef enum {
42   IF2IP_NOT_FOUND = 0, /* Interface not found */
43   IF2IP_AF_NOT_SUPPORTED = 1, /* Int. exists but has no address for this af */
44   IF2IP_FOUND = 2 /* The address has been stored in "buf" */
45 } if2ip_result_t;
46 
47 if2ip_result_t Curl_if2ip(int af,
48 #ifdef USE_IPV6
49                           unsigned int remote_scope,
50                           unsigned int local_scope_id,
51 #endif
52                           const char *interf,
53                           char *buf, size_t buf_size);
54 
55 #ifdef __INTERIX
56 
57 /* Nedelcho Stanev's work-around for SFU 3.0 */
58 struct ifreq {
59 #define IFNAMSIZ 16
60 #define IFHWADDRLEN 6
61   union {
62     char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
63   } ifr_ifrn;
64 
65  union {
66    struct sockaddr ifru_addr;
67    struct sockaddr ifru_broadaddr;
68    struct sockaddr ifru_netmask;
69    struct sockaddr ifru_hwaddr;
70    short ifru_flags;
71    int ifru_metric;
72    int ifru_mtu;
73  } ifr_ifru;
74 };
75 
76 /* This define was added by Daniel to avoid an extra #ifdef INTERIX in the
77    C code. */
78 
79 #define ifr_name ifr_ifrn.ifrn_name /* interface name */
80 #define ifr_addr ifr_ifru.ifru_addr /* address */
81 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
82 #define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
83 #define ifr_flags ifr_ifru.ifru_flags /* flags */
84 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
85 #define ifr_metric ifr_ifru.ifru_metric /* metric */
86 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
87 
88 #define SIOCGIFADDR _IOW('s', 102, struct ifreq) /* Get if addr */
89 
90 #endif /* __INTERIX */
91 
92 #endif /* HEADER_CURL_IF2IP_H */
93