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tor-android/external/badvpn_dns/system/BAddr.h

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/**
* @file BAddr.h
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @section DESCRIPTION
*
* Network address abstractions.
*/
#ifndef BADVPN_SYSTEM_BADDR_H
#define BADVPN_SYSTEM_BADDR_H
#include <stdint.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#ifdef BADVPN_USE_WINAPI
#include <ws2tcpip.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#endif
#include <misc/byteorder.h>
#include <misc/debug.h>
#include <misc/print_macros.h>
#include <misc/read_write_int.h>
#include <misc/compare.h>
#define BADDR_TYPE_NONE 0
#define BADDR_TYPE_IPV4 1
#define BADDR_TYPE_IPV6 2
#ifdef BADVPN_LINUX
#define BADDR_TYPE_PACKET 5
#endif
#define BADDR_MAX_ADDR_LEN 128
#define BIPADDR_MAX_PRINT_LEN 40
#define BADDR_MAX_PRINT_LEN 120
#define BADDR_PACKET_HEADER_TYPE_ETHERNET 1
#define BADDR_PACKET_PACKET_TYPE_HOST 1
#define BADDR_PACKET_PACKET_TYPE_BROADCAST 2
#define BADDR_PACKET_PACKET_TYPE_MULTICAST 3
#define BADDR_PACKET_PACKET_TYPE_OTHERHOST 4
#define BADDR_PACKET_PACKET_TYPE_OUTGOING 5
typedef struct {
int type;
union {
uint32_t ipv4;
uint8_t ipv6[16];
};
} BIPAddr;
static void BIPAddr_InitInvalid (BIPAddr *addr);
static void BIPAddr_InitIPv4 (BIPAddr *addr, uint32_t ip);
static void BIPAddr_InitIPv6 (BIPAddr *addr, uint8_t *ip);
static void BIPAddr_Assert (BIPAddr *addr);
static int BIPAddr_IsInvalid (BIPAddr *addr);
static int BIPAddr_Resolve (BIPAddr *addr, char *str, int noresolve) WARN_UNUSED;
static int BIPAddr_Compare (BIPAddr *addr1, BIPAddr *addr2);
/**
* Converts an IP address to human readable form.
*
* @param addr IP address to convert
* @param out destination buffer. Must be at least BIPADDR_MAX_PRINT_LEN characters long.
*/
static void BIPAddr_Print (BIPAddr *addr, char *out);
/**
* Socket address - IP address and transport protocol port number
*/
typedef struct {
int type;
union {
struct {
uint32_t ip;
uint16_t port;
} ipv4;
struct {
uint8_t ip[16];
uint16_t port;
} ipv6;
struct {
uint16_t phys_proto;
int interface_index;
int header_type;
int packet_type;
uint8_t phys_addr[8];
} packet;
};
} BAddr;
/**
* Makes an invalid address.
*/
static BAddr BAddr_MakeNone (void);
/**
* Makes an IPv4 address.
*
* @param ip IP address in network byte order
* @param port port number in network byte order
*/
static BAddr BAddr_MakeIPv4 (uint32_t ip, uint16_t port);
/**
* Makes an IPv6 address.
*
* @param ip IP address (16 bytes)
* @param port port number in network byte order
*/
static BAddr BAddr_MakeIPv6 (const uint8_t *ip, uint16_t port);
/**
* Makes an address from a BIPAddr and port number.
*
* @param ipaddr the BIPAddr
* @param port port number in network byte order
*/
static BAddr BAddr_MakeFromIpaddrAndPort (BIPAddr ipaddr, uint16_t port);
/**
* Deprecated, use BAddr_MakeNone.
*/
static void BAddr_InitNone (BAddr *addr);
/**
* Deprecated, use BAddr_MakeIPv4.
*/
static void BAddr_InitIPv4 (BAddr *addr, uint32_t ip, uint16_t port);
/**
* Deprecated, use BAddr_MakeIPv6.
*/
static void BAddr_InitIPv6 (BAddr *addr, uint8_t *ip, uint16_t port);
/**
* Deprecated, use BAddr_MakeFromIpaddrAndPort.
*/
static void BAddr_InitFromIpaddrAndPort (BAddr *addr, BIPAddr ipaddr, uint16_t port);
/**
* Initializes a packet socket (data link layer) address.
* Only Ethernet addresses are supported.
*
* @param addr the object
* @param phys_proto identifier for the upper protocol, network byte order (EtherType)
* @param interface_index network interface index
* @param header_type data link layer header type. Must be BADDR_PACKET_HEADER_TYPE_ETHERNET.
* @param packet_type the manner in which packets are sent/received. Must be one of
* BADDR_PACKET_PACKET_TYPE_HOST, BADDR_PACKET_PACKET_TYPE_BROADCAST,
* BADDR_PACKET_PACKET_TYPE_MULTICAST, BADDR_PACKET_PACKET_TYPE_OTHERHOST,
* BADDR_PACKET_PACKET_TYPE_OUTGOING.
* @param phys_addr data link layer address (MAC address)
*/
static void BAddr_InitPacket (BAddr *addr, uint16_t phys_proto, int interface_index, int header_type, int packet_type, uint8_t *phys_addr);
/**
* Does nothing.
*
* @param addr the object
*/
static void BAddr_Assert (BAddr *addr);
/**
* Determines whether the address is an invalid address.
*
* @param addr the object
* @return 1 if invalid, 0 if invalid
**/
static int BAddr_IsInvalid (BAddr *addr);
/**
* Returns the port number in the address.
*
* @param addr the object
* Must be an IPv4 or IPv6 address.
* @return port number, in network byte order
*/
static uint16_t BAddr_GetPort (BAddr *addr);
/**
* Returns the IP address in the address.
*
* @param addr the object
* @param ipaddr IP address will be returned here. If \a addr is not
* an IPv4 or IPv6 address, an invalid address will be
* returned.
*/
static void BAddr_GetIPAddr (BAddr *addr, BIPAddr *ipaddr);
/**
* Sets the port number in the address.
*
* @param addr the object
* Must be an IPv4 or IPv6 address.
* @param port port number, in network byte order
*/
static void BAddr_SetPort (BAddr *addr, uint16_t port);
/**
* Converts an IP address to human readable form.
*
* @param addr address to convert
* @param out destination buffer. Must be at least BADDR_MAX_PRINT_LEN characters long.
*/
static void BAddr_Print (BAddr *addr, char *out);
/**
* Resolves an address string.
* Format is "addr:port" for IPv4, "[addr]:port" for IPv6.
* addr is be a numeric address or a name.
* port is a numeric port number.
*
* @param addr output address
* @param name if not NULL, the name portion of the address will be
* stored here
* @param name_len if name is not NULL, the size of the name buffer
* @param noresolve only accept numeric addresses. Avoids blocking the caller.
* @return 1 on success, 0 on parse error
*/
static int BAddr_Parse2 (BAddr *addr, char *str, char *name, int name_len, int noresolve) WARN_UNUSED;
/**
* Resolves an address string.
* IPv4 input format is "a.b.c.d:p", where a.b.c.d is the IP address
* and d is the port number.
* IPv6 input format is "[addr]:p", where addr is an IPv6 addres in
* standard notation and p is the port number.
*
* @param addr output address
* @param name if not NULL, the name portion of the address will be
* stored here
* @param name_len if name is not NULL, the size of the name buffer
* @return 1 on success, 0 on parse error
*/
static int BAddr_Parse (BAddr *addr, char *str, char *name, int name_len) WARN_UNUSED;
static int BAddr_Compare (BAddr *addr1, BAddr *addr2);
static int BAddr_CompareOrder (BAddr *addr1, BAddr *addr2);
void BIPAddr_InitInvalid (BIPAddr *addr)
{
addr->type = BADDR_TYPE_NONE;
}
void BIPAddr_InitIPv4 (BIPAddr *addr, uint32_t ip)
{
addr->type = BADDR_TYPE_IPV4;
addr->ipv4 = ip;
}
void BIPAddr_InitIPv6 (BIPAddr *addr, uint8_t *ip)
{
addr->type = BADDR_TYPE_IPV6;
memcpy(addr->ipv6, ip, 16);
}
void BIPAddr_Assert (BIPAddr *addr)
{
switch (addr->type) {
case BADDR_TYPE_NONE:
case BADDR_TYPE_IPV4:
case BADDR_TYPE_IPV6:
return;
default:
ASSERT(0);
}
}
int BIPAddr_IsInvalid (BIPAddr *addr)
{
BIPAddr_Assert(addr);
return (addr->type == BADDR_TYPE_NONE);
}
int BIPAddr_Resolve (BIPAddr *addr, char *str, int noresolve)
{
int len = strlen(str);
char *addr_start;
int addr_len;
// determine address type
if (len >= 1 && str[0] == '[' && str[len - 1] == ']') {
addr->type = BADDR_TYPE_IPV6;
addr_start = str + 1;
addr_len = len - 2;
} else {
addr->type = BADDR_TYPE_IPV4;
addr_start = str;
addr_len = len;
}
// copy
char addr_str[BADDR_MAX_ADDR_LEN + 1];
if (addr_len > BADDR_MAX_ADDR_LEN) {
return 0;
}
memcpy(addr_str, addr_start, addr_len);
addr_str[addr_len] = '\0';
// initialize hints
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
switch (addr->type) {
case BADDR_TYPE_IPV6:
hints.ai_family = AF_INET6;
break;
case BADDR_TYPE_IPV4:
hints.ai_family = AF_INET;
break;
}
if (noresolve) {
hints.ai_flags |= AI_NUMERICHOST;
}
// call getaddrinfo
struct addrinfo *addrs;
int res;
if ((res = getaddrinfo(addr_str, NULL, &hints, &addrs)) != 0) {
return 0;
}
// set address
switch (addr->type) {
case BADDR_TYPE_IPV6:
memcpy(addr->ipv6, ((struct sockaddr_in6 *)addrs->ai_addr)->sin6_addr.s6_addr, sizeof(addr->ipv6));
break;
case BADDR_TYPE_IPV4:
addr->ipv4 = ((struct sockaddr_in *)addrs->ai_addr)->sin_addr.s_addr;
break;
}
freeaddrinfo(addrs);
return 1;
}
int BIPAddr_Compare (BIPAddr *addr1, BIPAddr *addr2)
{
BIPAddr_Assert(addr1);
BIPAddr_Assert(addr2);
if (addr1->type != addr2->type) {
return 0;
}
switch (addr1->type) {
case BADDR_TYPE_NONE:
return 0;
case BADDR_TYPE_IPV4:
return (addr1->ipv4 == addr2->ipv4);
case BADDR_TYPE_IPV6:
return (!memcmp(addr1->ipv6, addr2->ipv6, sizeof(addr1->ipv6)));
default:
ASSERT(0)
return 0;
}
}
uint16_t BAddr_GetPort (BAddr *addr)
{
BAddr_Assert(addr);
ASSERT(addr->type == BADDR_TYPE_IPV4 || addr->type == BADDR_TYPE_IPV6)
switch (addr->type) {
case BADDR_TYPE_IPV4:
return addr->ipv4.port;
case BADDR_TYPE_IPV6:
return addr->ipv6.port;
default:
ASSERT(0)
return 0;
}
}
void BAddr_GetIPAddr (BAddr *addr, BIPAddr *ipaddr)
{
BAddr_Assert(addr);
switch (addr->type) {
case BADDR_TYPE_IPV4:
BIPAddr_InitIPv4(ipaddr, addr->ipv4.ip);
return;
case BADDR_TYPE_IPV6:
BIPAddr_InitIPv6(ipaddr, addr->ipv6.ip);
return;
default:
BIPAddr_InitInvalid(ipaddr);
}
}
void BAddr_SetPort (BAddr *addr, uint16_t port)
{
BAddr_Assert(addr);
ASSERT(addr->type == BADDR_TYPE_IPV4 || addr->type == BADDR_TYPE_IPV6)
switch (addr->type) {
case BADDR_TYPE_IPV4:
addr->ipv4.port = port;
break;
case BADDR_TYPE_IPV6:
addr->ipv6.port = port;
break;
default:
ASSERT(0);
}
}
void BIPAddr_Print (BIPAddr *addr, char *out)
{
switch (addr->type) {
case BADDR_TYPE_NONE:
sprintf(out, "(none)");
break;
case BADDR_TYPE_IPV4:
sprintf(out, "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8,
*((uint8_t *)&addr->ipv4 + 0),
*((uint8_t *)&addr->ipv4 + 1),
*((uint8_t *)&addr->ipv4 + 2),
*((uint8_t *)&addr->ipv4 + 3)
);
break;
case BADDR_TYPE_IPV6: {
const char *ptr = (const char *)addr->ipv6;
sprintf(out,
"%"PRIx16":%"PRIx16":%"PRIx16":%"PRIx16":"
"%"PRIx16":%"PRIx16":%"PRIx16":%"PRIx16,
badvpn_read_be16(ptr + 0),
badvpn_read_be16(ptr + 2),
badvpn_read_be16(ptr + 4),
badvpn_read_be16(ptr + 6),
badvpn_read_be16(ptr + 8),
badvpn_read_be16(ptr + 10),
badvpn_read_be16(ptr + 12),
badvpn_read_be16(ptr + 14)
);
} break;
default:
ASSERT(0);
}
}
BAddr BAddr_MakeNone (void)
{
BAddr addr;
addr.type = BADDR_TYPE_NONE;
return addr;
}
BAddr BAddr_MakeIPv4 (uint32_t ip, uint16_t port)
{
BAddr addr;
addr.type = BADDR_TYPE_IPV4;
addr.ipv4.ip = ip;
addr.ipv4.port = port;
return addr;
}
BAddr BAddr_MakeIPv6 (const uint8_t *ip, uint16_t port)
{
BAddr addr;
addr.type = BADDR_TYPE_IPV6;
memcpy(addr.ipv6.ip, ip, 16);
addr.ipv6.port = port;
return addr;
}
BAddr BAddr_MakeFromIpaddrAndPort (BIPAddr ipaddr, uint16_t port)
{
BIPAddr_Assert(&ipaddr);
switch (ipaddr.type) {
case BADDR_TYPE_NONE:
return BAddr_MakeNone();
case BADDR_TYPE_IPV4:
return BAddr_MakeIPv4(ipaddr.ipv4, port);
case BADDR_TYPE_IPV6:
return BAddr_MakeIPv6(ipaddr.ipv6, port);
default:
ASSERT(0);
return BAddr_MakeNone();
}
}
void BAddr_InitNone (BAddr *addr)
{
*addr = BAddr_MakeNone();
}
void BAddr_InitIPv4 (BAddr *addr, uint32_t ip, uint16_t port)
{
*addr = BAddr_MakeIPv4(ip, port);
}
void BAddr_InitIPv6 (BAddr *addr, uint8_t *ip, uint16_t port)
{
*addr = BAddr_MakeIPv6(ip, port);
}
void BAddr_InitFromIpaddrAndPort (BAddr *addr, BIPAddr ipaddr, uint16_t port)
{
BIPAddr_Assert(&ipaddr);
*addr = BAddr_MakeFromIpaddrAndPort(ipaddr, port);
}
#ifdef BADVPN_LINUX
void BAddr_InitPacket (BAddr *addr, uint16_t phys_proto, int interface_index, int header_type, int packet_type, uint8_t *phys_addr)
{
ASSERT(header_type == BADDR_PACKET_HEADER_TYPE_ETHERNET)
ASSERT(packet_type == BADDR_PACKET_PACKET_TYPE_HOST || packet_type == BADDR_PACKET_PACKET_TYPE_BROADCAST ||
packet_type == BADDR_PACKET_PACKET_TYPE_MULTICAST || packet_type == BADDR_PACKET_PACKET_TYPE_OTHERHOST ||
packet_type == BADDR_PACKET_PACKET_TYPE_OUTGOING)
addr->type = BADDR_TYPE_PACKET;
addr->packet.phys_proto = phys_proto;
addr->packet.interface_index = interface_index;
addr->packet.header_type = header_type;
addr->packet.packet_type = packet_type;
memcpy(addr->packet.phys_addr, phys_addr, 6);
}
#endif
void BAddr_Assert (BAddr *addr)
{
switch (addr->type) {
case BADDR_TYPE_NONE:
case BADDR_TYPE_IPV4:
case BADDR_TYPE_IPV6:
#ifdef BADVPN_LINUX
case BADDR_TYPE_PACKET:
#endif
return;
default:
ASSERT(0);
}
}
int BAddr_IsInvalid (BAddr *addr)
{
BAddr_Assert(addr);
return (addr->type == BADDR_TYPE_NONE);
}
void BAddr_Print (BAddr *addr, char *out)
{
BAddr_Assert(addr);
BIPAddr ipaddr;
switch (addr->type) {
case BADDR_TYPE_NONE:
sprintf(out, "(none)");
break;
case BADDR_TYPE_IPV4:
BIPAddr_InitIPv4(&ipaddr, addr->ipv4.ip);
BIPAddr_Print(&ipaddr, out);
sprintf(out + strlen(out), ":%"PRIu16, ntoh16(addr->ipv4.port));
break;
case BADDR_TYPE_IPV6:
BIPAddr_InitIPv6(&ipaddr, addr->ipv6.ip);
BIPAddr_Print(&ipaddr, out);
sprintf(out + strlen(out), ":%"PRIu16, ntoh16(addr->ipv6.port));
break;
#ifdef BADVPN_LINUX
case BADDR_TYPE_PACKET:
ASSERT(addr->packet.header_type == BADDR_PACKET_HEADER_TYPE_ETHERNET)
sprintf(out, "proto=%"PRIu16",ifindex=%d,htype=eth,ptype=%d,addr=%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8,
addr->packet.phys_proto, (int)addr->packet.interface_index, (int)addr->packet.packet_type,
addr->packet.phys_addr[0], addr->packet.phys_addr[1], addr->packet.phys_addr[2],
addr->packet.phys_addr[3], addr->packet.phys_addr[4], addr->packet.phys_addr[5]);
break;
#endif
default:
ASSERT(0);
}
}
int BAddr_Parse2 (BAddr *addr, char *str, char *name, int name_len, int noresolve)
{
int len = strlen(str);
if (len < 1 || len > 1000) {
return 0;
}
int addr_start;
int addr_len;
int port_start;
int port_len;
// leading '[' indicates an IPv6 address
if (str[0] == '[') {
addr->type = BADDR_TYPE_IPV6;
// find ']'
int i=1;
while (i < len && str[i] != ']') i++;
if (i >= len) {
return 0;
}
addr_start = 1;
addr_len = i - addr_start;
// follows ':' and port number
if (i + 1 >= len || str[i + 1] != ':') {
return 0;
}
port_start = i + 2;
port_len = len - port_start;
}
// otherwise it's an IPv4 address
else {
addr->type = BADDR_TYPE_IPV4;
// find ':'
int i=0;
while (i < len && str[i] != ':') i++;
if (i >= len) {
return 0;
}
addr_start = 0;
addr_len = i - addr_start;
port_start = i + 1;
port_len = len - port_start;
}
// copy address and port to zero-terminated buffers
char addr_str[128];
if (addr_len >= sizeof(addr_str)) {
return 0;
}
memcpy(addr_str, str + addr_start, addr_len);
addr_str[addr_len] = '\0';
char port_str[6];
if (port_len >= sizeof(port_str)) {
return 0;
}
memcpy(port_str, str + port_start, port_len);
port_str[port_len] = '\0';
// parse port
char *err;
long int conv_res = strtol(port_str, &err, 10);
if (port_str[0] == '\0' || *err != '\0') {
return 0;
}
if (conv_res < 0 || conv_res > UINT16_MAX) {
return 0;
}
uint16_t port = conv_res;
port = hton16(port);
// initialize hints
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
switch (addr->type) {
case BADDR_TYPE_IPV6:
hints.ai_family = AF_INET6;
break;
case BADDR_TYPE_IPV4:
hints.ai_family = AF_INET;
break;
}
if (noresolve) {
hints.ai_flags |= AI_NUMERICHOST;
}
// call getaddrinfo
struct addrinfo *addrs;
int res;
if ((res = getaddrinfo(addr_str, NULL, &hints, &addrs)) != 0) {
return 0;
}
// set address
switch (addr->type) {
case BADDR_TYPE_IPV6:
memcpy(addr->ipv6.ip, ((struct sockaddr_in6 *)addrs->ai_addr)->sin6_addr.s6_addr, sizeof(addr->ipv6.ip));
addr->ipv6.port = port;
break;
case BADDR_TYPE_IPV4:
addr->ipv4.ip = ((struct sockaddr_in *)addrs->ai_addr)->sin_addr.s_addr;
addr->ipv4.port = port;
break;
}
freeaddrinfo(addrs);
if (name) {
if (strlen(addr_str) >= name_len) {
return 0;
}
strcpy(name, addr_str);
}
return 1;
}
int BAddr_Parse (BAddr *addr, char *str, char *name, int name_len)
{
return BAddr_Parse2(addr, str, name, name_len, 0);
}
int BAddr_Compare (BAddr *addr1, BAddr *addr2)
{
BAddr_Assert(addr1);
BAddr_Assert(addr2);
if (addr1->type != addr2->type) {
return 0;
}
switch (addr1->type) {
case BADDR_TYPE_IPV4:
return (addr1->ipv4.ip == addr2->ipv4.ip && addr1->ipv4.port == addr2->ipv4.port);
case BADDR_TYPE_IPV6:
return (!memcmp(addr1->ipv6.ip, addr2->ipv6.ip, sizeof(addr1->ipv6.ip)) && addr1->ipv6.port == addr2->ipv6.port);
default:
return 0;
}
}
int BAddr_CompareOrder (BAddr *addr1, BAddr *addr2)
{
BAddr_Assert(addr1);
BAddr_Assert(addr2);
int cmp = B_COMPARE(addr1->type, addr2->type);
if (cmp) {
return cmp;
}
switch (addr1->type) {
case BADDR_TYPE_NONE: {
return 0;
} break;
case BADDR_TYPE_IPV4: {
uint32_t ip1 = ntoh32(addr1->ipv4.ip);
uint32_t ip2 = ntoh32(addr2->ipv4.ip);
cmp = B_COMPARE(ip1, ip2);
if (cmp) {
return cmp;
}
uint16_t port1 = ntoh16(addr1->ipv4.port);
uint16_t port2 = ntoh16(addr2->ipv4.port);
return B_COMPARE(port1, port2);
} break;
case BADDR_TYPE_IPV6: {
cmp = memcmp(addr1->ipv6.ip, addr2->ipv6.ip, sizeof(addr1->ipv6.ip));
if (cmp) {
return B_COMPARE(cmp, 0);
}
uint16_t port1 = ntoh16(addr1->ipv6.port);
uint16_t port2 = ntoh16(addr2->ipv6.port);
return B_COMPARE(port1, port2);
} break;
default: {
return 0;
} break;
}
}
#endif
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