/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_result_t result;
  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);
  result = isc_netaddr_totext(&netaddr, target);
  if (result != ISC_R_SUCCESS) {
    return result;
  }

  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: 2025-11-24 06:17

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_result_t result;
118	0	isc_netaddr_t netaddr;
119	0	char pbuf[sizeof("65000")];
120	0	unsigned int plen;
121	0	isc_region_t avail;
122
123	0	REQUIRE(sockaddr != NULL);
124
125		/*
126		* Do the port first, giving us the opportunity to check for
127		* unsupported address families before calling
128		* isc_netaddr_fromsockaddr().
129		*/
130	0	switch (sockaddr->type.sa.sa_family) {
131	0	case AF_INET:
132	0	snprintf(pbuf, sizeof(pbuf), "%u",
133	0	ntohs(sockaddr->type.sin.sin_port));
134	0	break;
135	0	case AF_INET6:
136	0	snprintf(pbuf, sizeof(pbuf), "%u",
137	0	ntohs(sockaddr->type.sin6.sin6_port));
138	0	break;
139	0	default:
140	0	return ISC_R_FAILURE;
141	0	}
142
143	0	plen = strlen(pbuf);
144	0	INSIST(plen < sizeof(pbuf));
145
146	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
147	0	result = isc_netaddr_totext(&netaddr, target);
148	0	if (result != ISC_R_SUCCESS) {
149	0	return result;
150	0	}
151
152	0	if (1 + plen + 1 > isc_buffer_availablelength(target)) {
153	0	return ISC_R_NOSPACE;
154	0	}
155
156	0	isc_buffer_putmem(target, (const unsigned char *)"#", 1);
157	0	isc_buffer_putmem(target, (const unsigned char *)pbuf, plen);
158
159		/*
160		* Null terminate after used region.
161		*/
162	0	isc_buffer_availableregion(target, &avail);
163	0	INSIST(avail.length >= 1);
164	0	avail.base[0] = '\0';
165
166	0	return ISC_R_SUCCESS;
167	0	}
168
169		void
170	0	isc_sockaddr_format(const isc_sockaddr_t sa, char array, unsigned int size) {
171	0	isc_result_t result;
172	0	isc_buffer_t buf;
173
174	0	if (size == 0U) {
175	0	return;
176	0	}
177
178	0	isc_buffer_init(&buf, array, size);
179	0	result = isc_sockaddr_totext(sa, &buf);
180	0	if (result != ISC_R_SUCCESS) {
181		/*
182		* The message is the same as in netaddr.c.
183		*/
184	0	snprintf(array, size, "<unknown address, family %u>",
185	0	sa->type.sa.sa_family);
186	0	array[size - 1] = '\0';
187	0	}
188	0	}
189
190		void
191		isc_sockaddr_hash_ex(isc_hash32_t hash, const isc_sockaddr_t sockaddr,
192	0	bool address_only) {
193	0	REQUIRE(sockaddr != NULL);
194
195	0	size_t len = 0;
196	0	const uint8_t *s = NULL;
197	0	unsigned int p = 0;
198	0	const struct in6_addr *in6;
199
200	0	switch (sockaddr->type.sa.sa_family) {
201	0	case AF_INET:
202	0	s = (const uint8_t *)&sockaddr->type.sin.sin_addr;
203	0	len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
204	0	if (!address_only) {
205	0	p = ntohs(sockaddr->type.sin.sin_port);
206	0	}
207	0	break;
208	0	case AF_INET6:
209	0	in6 = &sockaddr->type.sin6.sin6_addr;
210	0	s = (const uint8_t *)in6;
211	0	if (IN6_IS_ADDR_V4MAPPED(in6)) {
212	0	s += 12;
213	0	len = sizeof(sockaddr->type.sin.sin_addr.s_addr);
214	0	} else {
215	0	len = sizeof(sockaddr->type.sin6.sin6_addr);
216	0	}
217	0	if (!address_only) {
218	0	p = ntohs(sockaddr->type.sin6.sin6_port);
219	0	}
220	0	break;
221	0	default:
222	0	UNREACHABLE();
223	0	}
224
225	0	isc_hash32_hash(hash, s, len, true);
226	0	if (!address_only) {
227	0	isc_hash32_hash(hash, &p, sizeof(p), true);
228	0	}
229	0	}
230
231		uint32_t
232	0	isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, bool address_only) {
233	0	isc_hash32_t hash;
234
235	0	isc_hash32_init(&hash);
236
237	0	isc_sockaddr_hash_ex(&hash, sockaddr, address_only);
238
239	0	return isc_hash32_finalize(&hash);
240	0	}
241
242		void
243	0	isc_sockaddr_any(isc_sockaddr_t *sockaddr) {
244	0	memset(sockaddr, 0, sizeof(*sockaddr));
245	0	sockaddr->type.sin.sin_family = AF_INET;
246	0	sockaddr->type.sin.sin_addr.s_addr = INADDR_ANY;
247	0	sockaddr->type.sin.sin_port = 0;
248	0	sockaddr->length = sizeof(sockaddr->type.sin);
249	0	ISC_LINK_INIT(sockaddr, link);
250	0	}
251
252		void
253	0	isc_sockaddr_any6(isc_sockaddr_t *sockaddr) {
254	0	memset(sockaddr, 0, sizeof(*sockaddr));
255	0	sockaddr->type.sin6.sin6_family = AF_INET6;
256	0	sockaddr->type.sin6.sin6_addr = in6addr_any;
257	0	sockaddr->type.sin6.sin6_port = 0;
258	0	sockaddr->length = sizeof(sockaddr->type.sin6);
259	0	ISC_LINK_INIT(sockaddr, link);
260	0	}
261
262		void
263		isc_sockaddr_fromin(isc_sockaddr_t sockaddr, const struct in_addr ina,
264	0	in_port_t port) {
265	0	memset(sockaddr, 0, sizeof(*sockaddr));
266	0	sockaddr->type.sin.sin_family = AF_INET;
267	0	sockaddr->type.sin.sin_addr = *ina;
268	0	sockaddr->type.sin.sin_port = htons(port);
269	0	sockaddr->length = sizeof(sockaddr->type.sin);
270	0	ISC_LINK_INIT(sockaddr, link);
271	0	}
272
273		void
274	0	isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int pf) {
275	0	switch (pf) {
276	0	case AF_INET:
277	0	isc_sockaddr_any(sockaddr);
278	0	break;
279	0	case AF_INET6:
280	0	isc_sockaddr_any6(sockaddr);
281	0	break;
282	0	default:
283	0	UNREACHABLE();
284	0	}
285	0	}
286
287		void
288		isc_sockaddr_fromin6(isc_sockaddr_t sockaddr, const struct in6_addr ina6,
289	0	in_port_t port) {
290	0	memset(sockaddr, 0, sizeof(*sockaddr));
291	0	sockaddr->type.sin6.sin6_family = AF_INET6;
292	0	sockaddr->type.sin6.sin6_addr = *ina6;
293	0	sockaddr->type.sin6.sin6_port = htons(port);
294	0	sockaddr->length = sizeof(sockaddr->type.sin6);
295	0	ISC_LINK_INIT(sockaddr, link);
296	0	}
297
298		void
299		isc_sockaddr_v6fromin(isc_sockaddr_t sockaddr, const struct in_addr ina,
300	0	in_port_t port) {
301	0	memset(sockaddr, 0, sizeof(*sockaddr));
302	0	sockaddr->type.sin6.sin6_family = AF_INET6;
303	0	sockaddr->type.sin6.sin6_addr.s6_addr[10] = 0xff;
304	0	sockaddr->type.sin6.sin6_addr.s6_addr[11] = 0xff;
305	0	memmove(&sockaddr->type.sin6.sin6_addr.s6_addr[12], ina, 4);
306	0	sockaddr->type.sin6.sin6_port = htons(port);
307	0	sockaddr->length = sizeof(sockaddr->type.sin6);
308	0	ISC_LINK_INIT(sockaddr, link);
309	0	}
310
311		int
312	0	isc_sockaddr_pf(const isc_sockaddr_t *sockaddr) {
313		/*
314		* Get the protocol family of 'sockaddr'.
315		*/
316
317	0	#if (AF_INET == PF_INET && AF_INET6 == PF_INET6)
318		/*
319		* Assume that PF_xxx == AF_xxx for all AF and PF.
320		*/
321	0	return sockaddr->type.sa.sa_family;
322		#else /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
323		switch (sockaddr->type.sa.sa_family) {
324		case AF_INET:
325		return PF_INET;
326		case AF_INET6:
327		return PF_INET6;
328		default:
329		FATAL_ERROR("unknown address family: %d",
330		(int)sockaddr->type.sa.sa_family);
331		}
332		#endif /* if (AF_INET == PF_INET && AF_INET6 == PF_INET6) */
333	0	}
334
335		void
336		isc_sockaddr_fromnetaddr(isc_sockaddr_t sockaddr, const isc_netaddr_t na,
337	0	in_port_t port) {
338	0	memset(sockaddr, 0, sizeof(*sockaddr));
339	0	sockaddr->type.sin.sin_family = na->family;
340	0	switch (na->family) {
341	0	case AF_INET:
342	0	sockaddr->length = sizeof(sockaddr->type.sin);
343	0	sockaddr->type.sin.sin_addr = na->type.in;
344	0	sockaddr->type.sin.sin_port = htons(port);
345	0	break;
346	0	case AF_INET6:
347	0	sockaddr->length = sizeof(sockaddr->type.sin6);
348	0	memmove(&sockaddr->type.sin6.sin6_addr, &na->type.in6, 16);
349	0	sockaddr->type.sin6.sin6_scope_id = isc_netaddr_getzone(na);
350	0	sockaddr->type.sin6.sin6_port = htons(port);
351	0	break;
352	0	default:
353	0	UNREACHABLE();
354	0	}
355	0	ISC_LINK_INIT(sockaddr, link);
356	0	}
357
358		void
359	0	isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port) {
360	0	switch (sockaddr->type.sa.sa_family) {
361	0	case AF_INET:
362	0	sockaddr->type.sin.sin_port = htons(port);
363	0	break;
364	0	case AF_INET6:
365	0	sockaddr->type.sin6.sin6_port = htons(port);
366	0	break;
367	0	default:
368	0	FATAL_ERROR("unknown address family: %d",
369	0	(int)sockaddr->type.sa.sa_family);
370	0	}
371	0	}
372
373		in_port_t
374	0	isc_sockaddr_getport(const isc_sockaddr_t *sockaddr) {
375	0	in_port_t port = 0;
376
377	0	switch (sockaddr->type.sa.sa_family) {
378	0	case AF_INET:
379	0	port = ntohs(sockaddr->type.sin.sin_port);
380	0	break;
381	0	case AF_INET6:
382	0	port = ntohs(sockaddr->type.sin6.sin6_port);
383	0	break;
384	0	default:
385	0	FATAL_ERROR("unknown address family: %d",
386	0	(int)sockaddr->type.sa.sa_family);
387	0	}
388
389	0	return port;
390	0	}
391
392		bool
393	0	isc_sockaddr_ismulticast(const isc_sockaddr_t *sockaddr) {
394	0	isc_netaddr_t netaddr;
395
396	0	if (sockaddr->type.sa.sa_family == AF_INET \|\|
397	0	sockaddr->type.sa.sa_family == AF_INET6)
398	0	{
399	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
400	0	return isc_netaddr_ismulticast(&netaddr);
401	0	}
402	0	return false;
403	0	}
404
405		bool
406	0	isc_sockaddr_isexperimental(const isc_sockaddr_t *sockaddr) {
407	0	isc_netaddr_t netaddr;
408
409	0	if (sockaddr->type.sa.sa_family == AF_INET) {
410	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
411	0	return isc_netaddr_isexperimental(&netaddr);
412	0	}
413	0	return false;
414	0	}
415
416		bool
417	0	isc_sockaddr_issitelocal(const isc_sockaddr_t *sockaddr) {
418	0	isc_netaddr_t netaddr;
419
420	0	if (sockaddr->type.sa.sa_family == AF_INET6) {
421	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
422	0	return isc_netaddr_issitelocal(&netaddr);
423	0	}
424	0	return false;
425	0	}
426
427		bool
428	0	isc_sockaddr_islinklocal(const isc_sockaddr_t *sockaddr) {
429	0	isc_netaddr_t netaddr;
430
431	0	if (sockaddr->type.sa.sa_family == AF_INET6) {
432	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
433	0	return isc_netaddr_islinklocal(&netaddr);
434	0	}
435	0	return false;
436	0	}
437
438		bool
439	0	isc_sockaddr_isnetzero(const isc_sockaddr_t *sockaddr) {
440	0	isc_netaddr_t netaddr;
441
442	0	if (sockaddr->type.sa.sa_family == AF_INET) {
443	0	isc_netaddr_fromsockaddr(&netaddr, sockaddr);
444	0	return isc_netaddr_isnetzero(&netaddr);
445	0	}
446	0	return false;
447	0	}
448
449		isc_result_t
450	0	isc_sockaddr_fromsockaddr(isc_sockaddr_t isa, const struct sockaddr sa) {
451	0	unsigned int length = 0;
452
453	0	switch (sa->sa_family) {
454	0	case AF_INET:
455	0	length = sizeof(isa->type.sin);
456	0	break;
457	0	case AF_INET6:
458	0	length = sizeof(isa->type.sin6);
459	0	break;
460	0	default:
461	0	return ISC_R_NOTIMPLEMENTED;
462	0	}
463
464	0	*isa = (isc_sockaddr_t){ .length = length,
465	0	.link = ISC_LINK_INITIALIZER };
466	0	memmove(isa, sa, length);
467
468	0	return ISC_R_SUCCESS;
469	0	}
470
471		bool
472	0	isc_sockaddr_disabled(const isc_sockaddr_t *sockaddr) {
473	0	if ((sockaddr->type.sa.sa_family == AF_INET &&
474	0	isc_net_probeipv4() == ISC_R_DISABLED) \|\|
475	0	(sockaddr->type.sa.sa_family == AF_INET6 &&
476	0	isc_net_probeipv6() == ISC_R_DISABLED))
477	0	{
478	0	return true;
479	0	}
480	0	return false;
481	0	}