/src/bind9/lib/isc/sockaddr.c

Source
/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

/*! \file */

#include <netdb.h>
#include <stdbool.h>
#include <stdio.h>

#include <isc/buffer.h>
#include <isc/hash.h>
#include <isc/netaddr.h>
#include <isc/region.h>
#include <isc/sockaddr.h>
#include <isc/string.h>
#include <isc/util.h>

bool
isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
  return isc_sockaddr_compare(a, b,
            ISC_SOCKADDR_CMPADDR |
              ISC_SOCKADDR_CMPPORT |
              ISC_SOCKADDR_CMPSCOPE);
}

bool
isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
  return isc_sockaddr_compare(
    a, b, ISC_SOCKADDR_CMPADDR | ISC_SOCKADDR_CMPSCOPE);
}

bool
isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
         unsigned int flags) {
  REQUIRE(a != NULL && b != NULL);

  if (a->length != b->length) {
    return false;
  }

  /*
   * We don't just memcmp because the sin_zero field isn't always
   * zero.
   */

  if (a->type.sa.sa_family != b->type.sa.sa_family) {
    return false;
  }
  switch (a->type.sa.sa_family) {
  case AF_INET:
    if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
        memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
         sizeof(a->type.sin.sin_addr)) != 0)
    {
      return false;
    }
    if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
        a->type.sin.sin_port != b->type.sin.sin_port)
    {
      return false;
    }
    break;
  case AF_INET6:
    if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
        memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
         sizeof(a->type.sin6.sin6_addr)) != 0)
    {
      return false;
    }
    /*
     * If ISC_SOCKADDR_CMPSCOPEZERO is set then don't return
     * false if one of the scopes in zero.
     */
    if ((flags & ISC_SOCKADDR_CMPSCOPE) != 0 &&
        a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id &&
        ((flags & ISC_SOCKADDR_CMPSCOPEZERO) == 0 ||
         (a->type.sin6.sin6_scope_id != 0 &&
          b->type.sin6.sin6_scope_id != 0)))
    {
      return false;
    }
    if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
        a->type.sin6.sin6_port != b->type.sin6.sin6_port)
    {
      return false;
    }
    break;
  default:
    if (memcmp(&a->type, &b->type, a->length) != 0) {
      return false;
    }
  }
  return true;
}

bool
isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
        unsigned int prefixlen) {
  isc_netaddr_t na, nb;
  isc_netaddr_fromsockaddr(&na, a);
  isc_netaddr_fromsockaddr(&nb, b);
  return isc_netaddr_eqprefix(&na, &nb, prefixlen);
}

isc_result_t
isc_sockaddr_totext(const isc_sockaddr_t *sockaddr, isc_buffer_t *target) {
  isc_netaddr_t netaddr;
  char pbuf[sizeof("65000")];
  unsigned int plen;
  isc_region_t avail;

  REQUIRE(sockaddr != NULL);

  /*
   * Do the port first, giving us the opportunity to check for
   * unsupported address families before calling
   * isc_netaddr_fromsockaddr().
   */
  switch (sockaddr->type.sa.sa_family) {
  case AF_INET:
    snprintf(pbuf, sizeof(pbuf), "%u",
       ntohs(sockaddr->type.sin.sin_port));
    break;
  case AF_INET6:
    snprintf(pbuf, sizeof(pbuf), "%u",
       ntohs(sockaddr->type.sin6.sin6_port));
    break;
  default:
    return ISC_R_FAILURE;
  }

  plen = strlen(pbuf);
  INSIST(plen < sizeof(pbuf));

  isc_netaddr_fromsockaddr(&netaddr, sockaddr);
  RETERR(isc_netaddr_totext(&netaddr, target));

  if (1 + plen + 1 > isc_buffer_availablelength(target)) {
    return ISC_R_NOSPACE;
  }

  isc_buffer_putmem(target, (const unsigned char *)"#", 1);
  isc_buffer_putmem(target, (const unsigned char *)pbuf, plen);

  /*
   * Null terminate after used region.
   */
  isc_buffer_availableregion(target, &avail);
  INSIST(avail.length >= 1);
  avail.base[0] = '\0';

  return ISC_R_SUCCESS;
}

void
isc_sockaddr_format(const isc_sockaddr_t *sa, char *array, unsigned int size) {
  isc_result_t result;
  isc_buffer_t buf;

  if (size == 0U) {
    return;
  }

  isc_buffer_init(&buf, array, size);
  result = isc_sockaddr_totext(sa, &buf);
  if (result != ISC_R_SUCCESS) {
    /*
     * The message is the same as in netaddr.c.
     */
    snprintf(array, size, "<unknown address, family %u>",
       sa->type.sa.sa_family);
    array[size - 1] = '\0';
  }
}

void
isc_sockaddr_hash_ex(isc_hash32_t *hash, const isc_sockaddr_t *sockaddr,
         bool address_only) {
  REQUIRE(sockaddr != NULL);

  size_t len = 0;
  const uint8_t *s = NULL;
  unsigned int p = 0;
  const struct in6_addr *in6;

  switch (sockaddr->type.sa.sa_family) {
  case AF_INET:
    s = (const uint8_t *)&sockaddr->type.sin.sin_addr;
    len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
    if (!address_only) {
      p = ntohs(sockaddr->type.sin.sin_port);
    }
    break;
  case AF_INET6:
    in6 = &sockaddr->type.sin6.sin6_addr;
    s = (const uint8_t *)in6;
    if (IN6_IS_ADDR_V4MAPPED(in6)) {
      s += 12;
      len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
    } else {
      len = sizeof(sockaddr->type.sin6.sin6_addr);
    }
    if (!address_only) {
      p = ntohs(sockaddr->type.sin6.sin6_port);
    }
    break;
  default:
    UNREACHABLE();
  }

  isc_hash32_hash(hash, s, len, true);
  if (!address_only) {
    isc_hash32_hash(hash, &p, sizeof(p), true);
  }
}

uint32_t
isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, bool address_only) {
  isc_hash32_t hash;

  isc_hash32_init(&hash);

  isc_sockaddr_hash_ex(&hash, sockaddr, address_only);

  return isc_hash32_finalize(&hash);
}

void
isc_sockaddr_any(isc_sockaddr_t *sockaddr) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin.sin_family = AF_INET;
  sockaddr->type.sin.sin_addr.s_addr = INADDR_ANY;
  sockaddr->type.sin.sin_port = 0;
  sockaddr->length = sizeof(sockaddr->type.sin);
  ISC_LINK_INIT(sockaddr, link);
}

void
isc_sockaddr_any6(isc_sockaddr_t *sockaddr) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin6.sin6_family = AF_INET6;
  sockaddr->type.sin6.sin6_addr = in6addr_any;
  sockaddr->type.sin6.sin6_port = 0;
  sockaddr->length = sizeof(sockaddr->type.sin6);
  ISC_LINK_INIT(sockaddr, link);
}

void
isc_sockaddr_fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
        in_port_t port) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin.sin_family = AF_INET;
  sockaddr->type.sin.sin_addr = *ina;
  sockaddr->type.sin.sin_port = htons(port);
  sockaddr->length = sizeof(sockaddr->type.sin);
  ISC_LINK_INIT(sockaddr, link);
}

void
isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int pf) {
  switch (pf) {
  case AF_INET:
    isc_sockaddr_any(sockaddr);
    break;
  case AF_INET6:
    isc_sockaddr_any6(sockaddr);
    break;
  default:
    UNREACHABLE();
  }
}

void
isc_sockaddr_fromin6(isc_sockaddr_t *sockaddr, const struct in6_addr *ina6,
         in_port_t port) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin6.sin6_family = AF_INET6;
  sockaddr->type.sin6.sin6_addr = *ina6;
  sockaddr->type.sin6.sin6_port = htons(port);
  sockaddr->length = sizeof(sockaddr->type.sin6);
  ISC_LINK_INIT(sockaddr, link);
}

void
isc_sockaddr_v6fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
          in_port_t port) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin6.sin6_family = AF_INET6;
  sockaddr->type.sin6.sin6_addr.s6_addr[10] = 0xff;
  sockaddr->type.sin6.sin6_addr.s6_addr[11] = 0xff;
  memmove(&sockaddr->type.sin6.sin6_addr.s6_addr[12], ina, 4);
  sockaddr->type.sin6.sin6_port = htons(port);
  sockaddr->length = sizeof(sockaddr->type.sin6);
  ISC_LINK_INIT(sockaddr, link);
}

int
isc_sockaddr_pf(const isc_sockaddr_t *sockaddr) {
  /*
   * Get the protocol family of 'sockaddr'.
   */

#if (AF_INET == PF_INET && AF_INET6 == PF_INET6)
  /*
   * Assume that PF_xxx == AF_xxx for all AF and PF.
   */
  return sockaddr->type.sa.sa_family;
#else  /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
  switch (sockaddr->type.sa.sa_family) {
  case AF_INET:
    return PF_INET;
  case AF_INET6:
    return PF_INET6;
  default:
    FATAL_ERROR("unknown address family: %d",
          (int)sockaddr->type.sa.sa_family);
  }
#endif /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
}

void
isc_sockaddr_fromnetaddr(isc_sockaddr_t *sockaddr, const isc_netaddr_t *na,
       in_port_t port) {
  memset(sockaddr, 0, sizeof(*sockaddr));
  sockaddr->type.sin.sin_family = na->family;
  switch (na->family) {
  case AF_INET:
    sockaddr->length = sizeof(sockaddr->type.sin);
    sockaddr->type.sin.sin_addr = na->type.in;
    sockaddr->type.sin.sin_port = htons(port);
    break;
  case AF_INET6:
    sockaddr->length = sizeof(sockaddr->type.sin6);
    memmove(&sockaddr->type.sin6.sin6_addr, &na->type.in6, 16);
    sockaddr->type.sin6.sin6_scope_id = isc_netaddr_getzone(na);
    sockaddr->type.sin6.sin6_port = htons(port);
    break;
  default:
    UNREACHABLE();
  }
  ISC_LINK_INIT(sockaddr, link);
}

void
isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port) {
  switch (sockaddr->type.sa.sa_family) {
  case AF_INET:
    sockaddr->type.sin.sin_port = htons(port);
    break;
  case AF_INET6:
    sockaddr->type.sin6.sin6_port = htons(port);
    break;
  default:
    FATAL_ERROR("unknown address family: %d",
          (int)sockaddr->type.sa.sa_family);
  }
}

in_port_t
isc_sockaddr_getport(const isc_sockaddr_t *sockaddr) {
  in_port_t port = 0;

  switch (sockaddr->type.sa.sa_family) {
  case AF_INET:
    port = ntohs(sockaddr->type.sin.sin_port);
    break;
  case AF_INET6:
    port = ntohs(sockaddr->type.sin6.sin6_port);
    break;
  default:
    FATAL_ERROR("unknown address family: %d",
          (int)sockaddr->type.sa.sa_family);
  }

  return port;
}

bool
isc_sockaddr_ismulticast(const isc_sockaddr_t *sockaddr) {
  isc_netaddr_t netaddr;

  if (sockaddr->type.sa.sa_family == AF_INET ||
      sockaddr->type.sa.sa_family == AF_INET6)
  {
    isc_netaddr_fromsockaddr(&netaddr, sockaddr);
    return isc_netaddr_ismulticast(&netaddr);
  }
  return false;
}

bool
isc_sockaddr_isexperimental(const isc_sockaddr_t *sockaddr) {
  isc_netaddr_t netaddr;

  if (sockaddr->type.sa.sa_family == AF_INET) {
    isc_netaddr_fromsockaddr(&netaddr, sockaddr);
    return isc_netaddr_isexperimental(&netaddr);
  }
  return false;
}

bool
isc_sockaddr_issitelocal(const isc_sockaddr_t *sockaddr) {
  isc_netaddr_t netaddr;

  if (sockaddr->type.sa.sa_family == AF_INET6) {
    isc_netaddr_fromsockaddr(&netaddr, sockaddr);
    return isc_netaddr_issitelocal(&netaddr);
  }
  return false;
}

bool
isc_sockaddr_islinklocal(const isc_sockaddr_t *sockaddr) {
  isc_netaddr_t netaddr;

  if (sockaddr->type.sa.sa_family == AF_INET6) {
    isc_netaddr_fromsockaddr(&netaddr, sockaddr);
    return isc_netaddr_islinklocal(&netaddr);
  }
  return false;
}

bool
isc_sockaddr_isnetzero(const isc_sockaddr_t *sockaddr) {
  isc_netaddr_t netaddr;

  if (sockaddr->type.sa.sa_family == AF_INET) {
    isc_netaddr_fromsockaddr(&netaddr, sockaddr);
    return isc_netaddr_isnetzero(&netaddr);
  }
  return false;
}

isc_result_t
isc_sockaddr_fromsockaddr(isc_sockaddr_t *isa, const struct sockaddr *sa) {
  unsigned int length = 0;

  switch (sa->sa_family) {
  case AF_INET:
    length = sizeof(isa->type.sin);
    break;
  case AF_INET6:
    length = sizeof(isa->type.sin6);
    break;
  default:
    return ISC_R_NOTIMPLEMENTED;
  }

  *isa = (isc_sockaddr_t){ .length = length,
         .link = ISC_LINK_INITIALIZER };
  memmove(isa, sa, length);

  return ISC_R_SUCCESS;
}

bool
isc_sockaddr_disabled(const isc_sockaddr_t *sockaddr) {
  if ((sockaddr->type.sa.sa_family == AF_INET &&
       isc_net_probeipv4() == ISC_R_DISABLED) ||
      (sockaddr->type.sa.sa_family == AF_INET6 &&
       isc_net_probeipv6() == ISC_R_DISABLED))
  {
    return true;
  }
  return false;
}

Coverage Report

Created: 2026-01-24 06:23

Line	Count	Source
1		/*
2		* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
3		*
4		* SPDX-License-Identifier: MPL-2.0
5		*
6		* This Source Code Form is subject to the terms of the Mozilla Public
7		* License, v. 2.0. If a copy of the MPL was not distributed with this
8		* file, you can obtain one at https://mozilla.org/MPL/2.0/.
9		*
10		* See the COPYRIGHT file distributed with this work for additional
11		* information regarding copyright ownership.
12		*/
13
14		/! \file /
15
16		#include <netdb.h>
17		#include <stdbool.h>
18		#include <stdio.h>
19
20		#include <isc/buffer.h>
21		#include <isc/hash.h>
22		#include <isc/netaddr.h>
23		#include <isc/region.h>
24		#include <isc/sockaddr.h>
25		#include <isc/string.h>
26		#include <isc/util.h>
27
28		bool
29	0	isc_sockaddr_equal(const isc_sockaddr_t a, const isc_sockaddr_t b) {
30	0	return isc_sockaddr_compare(a, b,
31	0	ISC_SOCKADDR_CMPADDR \|
32	0	ISC_SOCKADDR_CMPPORT \|
33	0	ISC_SOCKADDR_CMPSCOPE);
34	0	}
35
36		bool
37	0	isc_sockaddr_eqaddr(const isc_sockaddr_t a, const isc_sockaddr_t b) {
38	0	return isc_sockaddr_compare(
39	0	a, b, ISC_SOCKADDR_CMPADDR \| ISC_SOCKADDR_CMPSCOPE);
40	0	}
41
42		bool
43		isc_sockaddr_compare(const isc_sockaddr_t a, const isc_sockaddr_t b,
44	0	unsigned int flags) {
45	0	REQUIRE(a != NULL && b != NULL);
46
47	0	if (a->length != b->length) {
48	0	return false;
49	0	}
50
51		/*
52		* We don't just memcmp because the sin_zero field isn't always
53		* zero.
54		*/
55
56	0	if (a->type.sa.sa_family != b->type.sa.sa_family) {
57	0	return false;
58	0	}
59	0	switch (a->type.sa.sa_family) {
60	0	case AF_INET:
61	0	if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
62	0	memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
63	0	sizeof(a->type.sin.sin_addr)) != 0)
64	0	{
65	0	return false;
66	0	}
67	0	if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
68	0	a->type.sin.sin_port != b->type.sin.sin_port)
69	0	{
70	0	return false;
71	0	}
72	0	break;
73	0	case AF_INET6:
74	0	if ((flags & ISC_SOCKADDR_CMPADDR) != 0 &&
75	0	memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
76	0	sizeof(a->type.sin6.sin6_addr)) != 0)
77	0	{
78	0	return false;
79	0	}
80		/*
81		* If ISC_SOCKADDR_CMPSCOPEZERO is set then don't return
82		* false if one of the scopes in zero.
83		*/
84	0	if ((flags & ISC_SOCKADDR_CMPSCOPE) != 0 &&
85	0	a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id &&
86	0	((flags & ISC_SOCKADDR_CMPSCOPEZERO) == 0 \|\|
87	0	(a->type.sin6.sin6_scope_id != 0 &&
88	0	b->type.sin6.sin6_scope_id != 0)))
89	0	{
90	0	return false;
91	0	}
92	0	if ((flags & ISC_SOCKADDR_CMPPORT) != 0 &&
93	0	a->type.sin6.sin6_port != b->type.sin6.sin6_port)
94	0	{
95	0	return false;
96	0	}
97	0	break;
98	0	default:
99	0	if (memcmp(&a->type, &b->type, a->length) != 0) {
100	0	return false;
101	0	}
102	0	}
103	0	return true;
104	0	}
105
106		bool
107		isc_sockaddr_eqaddrprefix(const isc_sockaddr_t a, const isc_sockaddr_t b,
108	0	unsigned int prefixlen) {
109	0	isc_netaddr_t na, nb;
110	0	isc_netaddr_fromsockaddr(&na, a);
111	0	isc_netaddr_fromsockaddr(&nb, b);
112	0	return isc_netaddr_eqprefix(&na, &nb, prefixlen);
113	0	}
114
115		isc_result_t
116	0	isc_sockaddr_totext(const isc_sockaddr_t sockaddr, isc_buffer_t target) {
117	0	isc_netaddr_t netaddr;
118	0	char pbuf[sizeof("65000")];
119	0	unsigned int plen;
120	0	isc_region_t avail;
121
122	0	REQUIRE(sockaddr != NULL);
123
124		/*
125		* Do the port first, giving us the opportunity to check for
126		* unsupported address families before calling
127		* isc_netaddr_fromsockaddr().
128		*/
129	0	switch (sockaddr->type.sa.sa_family) {
130	0	case AF_INET:
131	0	snprintf(pbuf, sizeof(pbuf), "%u",
132	0	ntohs(sockaddr->type.sin.sin_port));
133	0	break;
134	0	case AF_INET6:
135	0	snprintf(pbuf, sizeof(pbuf), "%u",
136	0	ntohs(sockaddr->type.sin6.sin6_port));
137	0	break;
138	0	default:
139	0	return ISC_R_FAILURE;
140	0	}
141
142	0	plen = strlen(pbuf);
143	0	INSIST(plen < sizeof(pbuf));
144
145	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
146	0	RETERR(isc_netaddr_totext(&netaddr, target));
147
148	0	if (1 + plen + 1 > isc_buffer_availablelength(target)) {
149	0	return ISC_R_NOSPACE;
150	0	}
151
152	0	isc_buffer_putmem(target, (const unsigned char *)"#", 1);
153	0	isc_buffer_putmem(target, (const unsigned char *)pbuf, plen);
154
155		/*
156		* Null terminate after used region.
157		*/
158	0	isc_buffer_availableregion(target, &avail);
159	0	INSIST(avail.length >= 1);
160	0	avail.base[0] = '\0';
161
162	0	return ISC_R_SUCCESS;
163	0	}
164
165		void
166	0	isc_sockaddr_format(const isc_sockaddr_t sa, char array, unsigned int size) {
167	0	isc_result_t result;
168	0	isc_buffer_t buf;
169
170	0	if (size == 0U) {
171	0	return;
172	0	}
173
174	0	isc_buffer_init(&buf, array, size);
175	0	result = isc_sockaddr_totext(sa, &buf);
176	0	if (result != ISC_R_SUCCESS) {
177		/*
178		* The message is the same as in netaddr.c.
179		*/
180	0	snprintf(array, size, "<unknown address, family %u>",
181	0	sa->type.sa.sa_family);
182	0	array[size - 1] = '\0';
183	0	}
184	0	}
185
186		void
187		isc_sockaddr_hash_ex(isc_hash32_t hash, const isc_sockaddr_t sockaddr,
188	0	bool address_only) {
189	0	REQUIRE(sockaddr != NULL);
190
191	0	size_t len = 0;
192	0	const uint8_t *s = NULL;
193	0	unsigned int p = 0;
194	0	const struct in6_addr *in6;
195
196	0	switch (sockaddr->type.sa.sa_family) {
197	0	case AF_INET:
198	0	s = (const uint8_t *)&sockaddr->type.sin.sin_addr;
199	0	len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
200	0	if (!address_only) {
201	0	p = ntohs(sockaddr->type.sin.sin_port);
202	0	}
203	0	break;
204	0	case AF_INET6:
205	0	in6 = &sockaddr->type.sin6.sin6_addr;
206	0	s = (const uint8_t *)in6;
207	0	if (IN6_IS_ADDR_V4MAPPED(in6)) {
208	0	s += 12;
209	0	len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
210	0	} else {
211	0	len = sizeof(sockaddr->type.sin6.sin6_addr);
212	0	}
213	0	if (!address_only) {
214	0	p = ntohs(sockaddr->type.sin6.sin6_port);
215	0	}
216	0	break;
217	0	default:
218	0	UNREACHABLE();
219	0	}
220
221	0	isc_hash32_hash(hash, s, len, true);
222	0	if (!address_only) {
223	0	isc_hash32_hash(hash, &p, sizeof(p), true);
224	0	}
225	0	}
226
227		uint32_t
228	0	isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, bool address_only) {
229	0	isc_hash32_t hash;
230
231	0	isc_hash32_init(&hash);
232
233	0	isc_sockaddr_hash_ex(&hash, sockaddr, address_only);
234
235	0	return isc_hash32_finalize(&hash);
236	0	}
237
238		void
239	0	isc_sockaddr_any(isc_sockaddr_t *sockaddr) {
240	0	memset(sockaddr, 0, sizeof(*sockaddr));
241	0	sockaddr->type.sin.sin_family = AF_INET;
242	0	sockaddr->type.sin.sin_addr.s_addr = INADDR_ANY;
243	0	sockaddr->type.sin.sin_port = 0;
244	0	sockaddr->length = sizeof(sockaddr->type.sin);
245	0	ISC_LINK_INIT(sockaddr, link);
246	0	}
247
248		void
249	0	isc_sockaddr_any6(isc_sockaddr_t *sockaddr) {
250	0	memset(sockaddr, 0, sizeof(*sockaddr));
251	0	sockaddr->type.sin6.sin6_family = AF_INET6;
252	0	sockaddr->type.sin6.sin6_addr = in6addr_any;
253	0	sockaddr->type.sin6.sin6_port = 0;
254	0	sockaddr->length = sizeof(sockaddr->type.sin6);
255	0	ISC_LINK_INIT(sockaddr, link);
256	0	}
257
258		void
259		isc_sockaddr_fromin(isc_sockaddr_t sockaddr, const struct in_addr ina,
260	0	in_port_t port) {
261	0	memset(sockaddr, 0, sizeof(*sockaddr));
262	0	sockaddr->type.sin.sin_family = AF_INET;
263	0	sockaddr->type.sin.sin_addr = *ina;
264	0	sockaddr->type.sin.sin_port = htons(port);
265	0	sockaddr->length = sizeof(sockaddr->type.sin);
266	0	ISC_LINK_INIT(sockaddr, link);
267	0	}
268
269		void
270	0	isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int pf) {
271	0	switch (pf) {
272	0	case AF_INET:
273	0	isc_sockaddr_any(sockaddr);
274	0	break;
275	0	case AF_INET6:
276	0	isc_sockaddr_any6(sockaddr);
277	0	break;
278	0	default:
279	0	UNREACHABLE();
280	0	}
281	0	}
282
283		void
284		isc_sockaddr_fromin6(isc_sockaddr_t sockaddr, const struct in6_addr ina6,
285	0	in_port_t port) {
286	0	memset(sockaddr, 0, sizeof(*sockaddr));
287	0	sockaddr->type.sin6.sin6_family = AF_INET6;
288	0	sockaddr->type.sin6.sin6_addr = *ina6;
289	0	sockaddr->type.sin6.sin6_port = htons(port);
290	0	sockaddr->length = sizeof(sockaddr->type.sin6);
291	0	ISC_LINK_INIT(sockaddr, link);
292	0	}
293
294		void
295		isc_sockaddr_v6fromin(isc_sockaddr_t sockaddr, const struct in_addr ina,
296	0	in_port_t port) {
297	0	memset(sockaddr, 0, sizeof(*sockaddr));
298	0	sockaddr->type.sin6.sin6_family = AF_INET6;
299	0	sockaddr->type.sin6.sin6_addr.s6_addr[10] = 0xff;
300	0	sockaddr->type.sin6.sin6_addr.s6_addr[11] = 0xff;
301	0	memmove(&sockaddr->type.sin6.sin6_addr.s6_addr[12], ina, 4);
302	0	sockaddr->type.sin6.sin6_port = htons(port);
303	0	sockaddr->length = sizeof(sockaddr->type.sin6);
304	0	ISC_LINK_INIT(sockaddr, link);
305	0	}
306
307		int
308	0	isc_sockaddr_pf(const isc_sockaddr_t *sockaddr) {
309		/*
310		* Get the protocol family of 'sockaddr'.
311		*/
312
313	0	#if (AF_INET == PF_INET && AF_INET6 == PF_INET6)
314		/*
315		* Assume that PF_xxx == AF_xxx for all AF and PF.
316		*/
317	0	return sockaddr->type.sa.sa_family;
318		#else /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
319		switch (sockaddr->type.sa.sa_family) {
320		case AF_INET:
321		return PF_INET;
322		case AF_INET6:
323		return PF_INET6;
324		default:
325		FATAL_ERROR("unknown address family: %d",
326		(int)sockaddr->type.sa.sa_family);
327		}
328		#endif /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
329	0	}
330
331		void
332		isc_sockaddr_fromnetaddr(isc_sockaddr_t sockaddr, const isc_netaddr_t na,
333	0	in_port_t port) {
334	0	memset(sockaddr, 0, sizeof(*sockaddr));
335	0	sockaddr->type.sin.sin_family = na->family;
336	0	switch (na->family) {
337	0	case AF_INET:
338	0	sockaddr->length = sizeof(sockaddr->type.sin);
339	0	sockaddr->type.sin.sin_addr = na->type.in;
340	0	sockaddr->type.sin.sin_port = htons(port);
341	0	break;
342	0	case AF_INET6:
343	0	sockaddr->length = sizeof(sockaddr->type.sin6);
344	0	memmove(&sockaddr->type.sin6.sin6_addr, &na->type.in6, 16);
345	0	sockaddr->type.sin6.sin6_scope_id = isc_netaddr_getzone(na);
346	0	sockaddr->type.sin6.sin6_port = htons(port);
347	0	break;
348	0	default:
349	0	UNREACHABLE();
350	0	}
351	0	ISC_LINK_INIT(sockaddr, link);
352	0	}
353
354		void
355	0	isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port) {
356	0	switch (sockaddr->type.sa.sa_family) {
357	0	case AF_INET:
358	0	sockaddr->type.sin.sin_port = htons(port);
359	0	break;
360	0	case AF_INET6:
361	0	sockaddr->type.sin6.sin6_port = htons(port);
362	0	break;
363	0	default:
364	0	FATAL_ERROR("unknown address family: %d",
365	0	(int)sockaddr->type.sa.sa_family);
366	0	}
367	0	}
368
369		in_port_t
370	0	isc_sockaddr_getport(const isc_sockaddr_t *sockaddr) {
371	0	in_port_t port = 0;
372
373	0	switch (sockaddr->type.sa.sa_family) {
374	0	case AF_INET:
375	0	port = ntohs(sockaddr->type.sin.sin_port);
376	0	break;
377	0	case AF_INET6:
378	0	port = ntohs(sockaddr->type.sin6.sin6_port);
379	0	break;
380	0	default:
381	0	FATAL_ERROR("unknown address family: %d",
382	0	(int)sockaddr->type.sa.sa_family);
383	0	}
384
385	0	return port;
386	0	}
387
388		bool
389	0	isc_sockaddr_ismulticast(const isc_sockaddr_t *sockaddr) {
390	0	isc_netaddr_t netaddr;
391
392	0	if (sockaddr->type.sa.sa_family == AF_INET \|\|
393	0	sockaddr->type.sa.sa_family == AF_INET6)
394	0	{
395	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
396	0	return isc_netaddr_ismulticast(&netaddr);
397	0	}
398	0	return false;
399	0	}
400
401		bool
402	0	isc_sockaddr_isexperimental(const isc_sockaddr_t *sockaddr) {
403	0	isc_netaddr_t netaddr;
404
405	0	if (sockaddr->type.sa.sa_family == AF_INET) {
406	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
407	0	return isc_netaddr_isexperimental(&netaddr);
408	0	}
409	0	return false;
410	0	}
411
412		bool
413	0	isc_sockaddr_issitelocal(const isc_sockaddr_t *sockaddr) {
414	0	isc_netaddr_t netaddr;
415
416	0	if (sockaddr->type.sa.sa_family == AF_INET6) {
417	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
418	0	return isc_netaddr_issitelocal(&netaddr);
419	0	}
420	0	return false;
421	0	}
422
423		bool
424	0	isc_sockaddr_islinklocal(const isc_sockaddr_t *sockaddr) {
425	0	isc_netaddr_t netaddr;
426
427	0	if (sockaddr->type.sa.sa_family == AF_INET6) {
428	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
429	0	return isc_netaddr_islinklocal(&netaddr);
430	0	}
431	0	return false;
432	0	}
433
434		bool
435	0	isc_sockaddr_isnetzero(const isc_sockaddr_t *sockaddr) {
436	0	isc_netaddr_t netaddr;
437
438	0	if (sockaddr->type.sa.sa_family == AF_INET) {
439	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
440	0	return isc_netaddr_isnetzero(&netaddr);
441	0	}
442	0	return false;
443	0	}
444
445		isc_result_t
446	0	isc_sockaddr_fromsockaddr(isc_sockaddr_t isa, const struct sockaddr sa) {
447	0	unsigned int length = 0;
448
449	0	switch (sa->sa_family) {
450	0	case AF_INET:
451	0	length = sizeof(isa->type.sin);
452	0	break;
453	0	case AF_INET6:
454	0	length = sizeof(isa->type.sin6);
455	0	break;
456	0	default:
457	0	return ISC_R_NOTIMPLEMENTED;
458	0	}
459
460	0	*isa = (isc_sockaddr_t){ .length = length,
461	0	.link = ISC_LINK_INITIALIZER };
462	0	memmove(isa, sa, length);
463
464	0	return ISC_R_SUCCESS;
465	0	}
466
467		bool
468	0	isc_sockaddr_disabled(const isc_sockaddr_t *sockaddr) {
469	0	if ((sockaddr->type.sa.sa_family == AF_INET &&
470	0	isc_net_probeipv4() == ISC_R_DISABLED) \|\|
471	0	(sockaddr->type.sa.sa_family == AF_INET6 &&
472	0	isc_net_probeipv6() == ISC_R_DISABLED))
473	0	{
474	0	return true;
475	0	}
476	0	return false;
477	0	}