summaryrefslogtreecommitdiffstats
path: root/nbase/nbase_ipv6.h
blob: 04cd56899723a53f9a312d9bd1c5fddc99d83904 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/***************************************************************************
 * nbase_ipv6.h -- IPv6 portability classes and structures These were      *
 * written by fyodor@nmap.org .                                        *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *
 * The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
 * Project"). Nmap is also a registered trademark of the Nmap Project.
 *
 * This program is distributed under the terms of the Nmap Public Source
 * License (NPSL). The exact license text applying to a particular Nmap
 * release or source code control revision is contained in the LICENSE
 * file distributed with that version of Nmap or source code control
 * revision. More Nmap copyright/legal information is available from
 * https://nmap.org/book/man-legal.html, and further information on the
 * NPSL license itself can be found at https://nmap.org/npsl/ . This
 * header summarizes some key points from the Nmap license, but is no
 * substitute for the actual license text.
 *
 * Nmap is generally free for end users to download and use themselves,
 * including commercial use. It is available from https://nmap.org.
 *
 * The Nmap license generally prohibits companies from using and
 * redistributing Nmap in commercial products, but we sell a special Nmap
 * OEM Edition with a more permissive license and special features for
 * this purpose. See https://nmap.org/oem/
 *
 * If you have received a written Nmap license agreement or contract
 * stating terms other than these (such as an Nmap OEM license), you may
 * choose to use and redistribute Nmap under those terms instead.
 *
 * The official Nmap Windows builds include the Npcap software
 * (https://npcap.com) for packet capture and transmission. It is under
 * separate license terms which forbid redistribution without special
 * permission. So the official Nmap Windows builds may not be redistributed
 * without special permission (such as an Nmap OEM license).
 *
 * Source is provided to this software because we believe users have a
 * right to know exactly what a program is going to do before they run it.
 * This also allows you to audit the software for security holes.
 *
 * Source code also allows you to port Nmap to new platforms, fix bugs, and add
 * new features. You are highly encouraged to submit your changes as a Github PR
 * or by email to the dev@nmap.org mailing list for possible incorporation into
 * the main distribution. Unless you specify otherwise, it is understood that
 * you are offering us very broad rights to use your submissions as described in
 * the Nmap Public Source License Contributor Agreement. This is important
 * because we fund the project by selling licenses with various terms, and also
 * because the inability to relicense code has caused devastating problems for
 * other Free Software projects (such as KDE and NASM).
 *
 * The free version of Nmap is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
 * indemnification and commercial support are all available through the
 * Npcap OEM program--see https://nmap.org/oem/
 *
 ***************************************************************************/

/* $Id$ */

#ifndef NBASE_IPV6_H
#define NBASE_IPV6_H

#ifdef __amigaos__
#ifndef _NMAP_AMIGAOS_H_
#include "../nmap_amigaos.h"
#endif
#endif

#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

#ifndef HAVE_AF_INET6
#define AF_INET6 10
#define PF_INET6 10
#endif /* HAVE_AF_INET6 */
#ifndef HAVE_INET_PTON
/* int
 * inet_pton(af, src, dst)
 *      convert from presentation format (which usually means ASCII printable)
 *      to network format (which is usually some kind of binary format).
 * return:
 *      1 if the address was valid for the specified address family
 *      0 if the address wasn't valid (`dst' is untouched in this case)
 *      -1 if some other error occurred (`dst' is untouched in this case, too)
 * author:
 *      Paul Vixie, 1996.
 */
int inet_pton(int af, const char *src, void *dst);
#endif /* HAVE_INET_PTON */

#ifndef HAVE_INET_NTOP
/* char *
 * inet_ntop(af, src, dst, size)
 *	convert a network format address to presentation format.
 * return:
 *	pointer to presentation format address (`dst'), or NULL (see errno).
 * author:
 *	Paul Vixie, 1996.
 */
const char *inet_ntop(int af, const void *src, char *dst, size_t size);
#endif /* HAVE_INET_NTOP */

#ifndef HAVE_SOCKADDR_STORAGE
struct sockaddr_storage {
  u16 ss_family;
  u16 __align_to_64[3];
  u64 __padding[16];
};
#endif /* SOCKADDR_STORAGE */

/* Compares two sockaddr_storage structures with a return value like strcmp.
   First the address families are compared, then the addresses if the families
   are equal. The structures must be real full-length sockaddr_storage
   structures, not something shorter like sockaddr_in. */
int sockaddr_storage_cmp(const struct sockaddr_storage *a,
  const struct sockaddr_storage *b);

/* Does sockaddr_storage_cmp(a, b) == 0 for you. */
int sockaddr_storage_equal(const struct sockaddr_storage *a,
  const struct sockaddr_storage *b);

/* This function is an easier version of inet_ntop because you don't
   need to pass a dest buffer.  Instead, it returns a static buffer that
   you can use until the function is called again (by the same or another
   thread in the process).  If there is a weird error (like sslen being
   too short) then NULL will be returned. */
const char *inet_ntop_ez(const struct sockaddr_storage *ss, size_t sslen);


#if !HAVE_GETNAMEINFO || !HAVE_GETADDRINFO
#if !defined(EAI_MEMORY)
#define EAI_ADDRFAMILY   1      /* address family for hostname not supported */
#define EAI_AGAIN        2      /* temporary failure in name resolution */
#define EAI_BADFLAGS     3      /* invalid value for ai_flags */
#define EAI_FAIL         4      /* non-recoverable failure in name resolution */
#define EAI_FAMILY       5      /* ai_family not supported */
#define EAI_MEMORY       6      /* memory allocation failure */
#define EAI_NODATA       7      /* no address associated with hostname */
#define EAI_NONAME       8      /* hostname nor servname provided, or not known */
#define EAI_SERVICE      9      /* servname not supported for ai_socktype */
#define EAI_SOCKTYPE    10      /* ai_socktype not supported */
#define EAI_SYSTEM      11      /* system error returned in errno */
#define EAI_BADHINTS    12
#define EAI_PROTOCOL    13
#define EAI_MAX         14
#endif /* EAI_MEMORY */
#endif /* !HAVE_GETNAMEINFO || !HAVE_GETADDRINFO */

#if !HAVE_GETNAMEINFO
/* This replacement version is *NOT* a full implementation by any
   stretch of the imagination */
/* getnameinfo flags */
#if !defined(NI_NAMEREQD)
#define NI_NOFQDN 8
#define NI_NUMERICHOST 16
#define NI_NAMEREQD 32
#define NI_NUMERICSERV 64
#define NI_DGRAM 128
#endif

struct sockaddr;
int getnameinfo(const struct sockaddr *sa, size_t salen,
                char *host, size_t hostlen,
                char *serv, size_t servlen, int flags);
#endif /* !HAVE_GETNAMEINFO */

#if !HAVE_GETADDRINFO
/* This replacement version is *NOT* a full implementation by any
   stretch of the imagination */
struct addrinfo {
  int ai_flags;      /*  AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
  int ai_family;    /* PF_xxx */
  int ai_socktype;  /* SOCK_xxx */
  int ai_protocol;  /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
  size_t ai_addrlen;   /* length of ai_addr */
  char *ai_canonname; /* canonical name for nodename */
  struct sockaddr  *ai_addr; /* binary address */
  struct  addrinfo  *ai_next; /* next structure in linked list */
};

/* getaddrinfo Flags */
#if !defined(AI_PASSIVE) || !defined(AI_CANONNAME) || !defined(AI_NUMERICHOST)
#define AI_PASSIVE 1
#define AI_CANONNAME 2
#define AI_NUMERICHOST 4
#endif

void freeaddrinfo(struct addrinfo *res);
int getaddrinfo(const char *node, const char *service,
                const struct addrinfo *hints, struct addrinfo **res);

#endif /* !HAVE_GETADDRINFO */

#ifndef HAVE_GAI_STRERROR
const char *gai_strerror(int errcode);
#endif

int sockaddr_storage_inet_pton(const char * ip_str, struct sockaddr_storage * addr);
const char *sockaddr_storage_iptop(const struct sockaddr_storage * addr, char * dst);

#endif /* NBASE_IPV6_H */