DongEun Koak / NetworkSocketAPI

NetworkSocketAPI

Dependencies:   DnsQuery

Dependents:   HelloWizFi250Interface

Fork of NetworkSocketAPI by NetworkSocketAPI

SocketAddress.cpp@94:644df37bb05b, 2016-04-19 (annotated)

Committer:
Christopher Haster
Date:
Tue Apr 19 18:23:58 2016 -0500
Revision:
94:644df37bb05b
Parent:
89:b1d417383c0d
Child:
95:b3c679f20d13
Added support for storing bytes directly in SocketAddress



Bytes are stored by default, however enough space is allocated in

a SocketAddress to generate the string representation if necessary.



Currently there is no support for shortened addresses

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 89:b1d417383c0d 1 /* Socket
Christopher Haster 89:b1d417383c0d 2 * Copyright (c) 2015 ARM Limited
Christopher Haster 89:b1d417383c0d 3 *
Christopher Haster 89:b1d417383c0d 4 * Licensed under the Apache License, Version 2.0 (the "License");
Christopher Haster 89:b1d417383c0d 5 * you may not use this file except in compliance with the License.
Christopher Haster 89:b1d417383c0d 6 * You may obtain a copy of the License at
Christopher Haster 89:b1d417383c0d 7 *
Christopher Haster 89:b1d417383c0d 8 * http://www.apache.org/licenses/LICENSE-2.0
Christopher Haster 89:b1d417383c0d 9 *
Christopher Haster 89:b1d417383c0d 10 * Unless required by applicable law or agreed to in writing, software
Christopher Haster 89:b1d417383c0d 11 * distributed under the License is distributed on an "AS IS" BASIS,
Christopher Haster 89:b1d417383c0d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Christopher Haster 89:b1d417383c0d 13 * See the License for the specific language governing permissions and
Christopher Haster 89:b1d417383c0d 14 * limitations under the License.
Christopher Haster 89:b1d417383c0d 15 */
Christopher Haster 89:b1d417383c0d 16
Christopher Haster 89:b1d417383c0d 17 #include "SocketAddress.h"
Christopher Haster 89:b1d417383c0d 18 #include "NetworkInterface.h"
Christopher Haster 89:b1d417383c0d 19 #include <string.h>
Christopher Haster 89:b1d417383c0d 20 #include "mbed.h"
Christopher Haster 89:b1d417383c0d 21
Christopher Haster 94:644df37bb05b 22 static bool address_is_ipv4(const char *addr)
Christopher Haster 94:644df37bb05b 23 {
Christopher Haster 94:644df37bb05b 24 int i = 0;
Christopher Haster 94:644df37bb05b 25
Christopher Haster 94:644df37bb05b 26 // Check each digit for [0-9.]
Christopher Haster 94:644df37bb05b 27 for (; addr[i]; i++) {
Christopher Haster 94:644df37bb05b 28 if (!(addr[i] >= '0' && addr[i] <= '9') && addr[i] != '.') {
Christopher Haster 94:644df37bb05b 29 return false;
Christopher Haster 94:644df37bb05b 30 }
Christopher Haster 94:644df37bb05b 31 }
Christopher Haster 94:644df37bb05b 32
Christopher Haster 94:644df37bb05b 33 // Ending with '.' garuntees host
Christopher Haster 94:644df37bb05b 34 if (i > 0 && addr[i-1] == '.') {
Christopher Haster 94:644df37bb05b 35 return false;
Christopher Haster 94:644df37bb05b 36 }
Christopher Haster 94:644df37bb05b 37
Christopher Haster 94:644df37bb05b 38 return true;
Christopher Haster 94:644df37bb05b 39 }
Christopher Haster 94:644df37bb05b 40
Christopher Haster 94:644df37bb05b 41 static bool address_is_ipv6(const char *addr)
Christopher Haster 94:644df37bb05b 42 {
Christopher Haster 94:644df37bb05b 43 // Check each digit for [0-9a-fA-F:]
Christopher Haster 94:644df37bb05b 44 for (int i = 0; addr[i]; i++) {
Christopher Haster 94:644df37bb05b 45 if (!(addr[i] >= '0' && addr[i] <= '9') &&
Christopher Haster 94:644df37bb05b 46 !(addr[i] >= 'a' && addr[i] <= 'f') &&
Christopher Haster 94:644df37bb05b 47 !(addr[i] >= 'A' && addr[i] <= 'F') &&
Christopher Haster 94:644df37bb05b 48 addr[i] != ':') {
Christopher Haster 94:644df37bb05b 49 return false;
Christopher Haster 94:644df37bb05b 50 }
Christopher Haster 94:644df37bb05b 51 }
Christopher Haster 94:644df37bb05b 52
Christopher Haster 94:644df37bb05b 53 return true;
Christopher Haster 94:644df37bb05b 54 }
Christopher Haster 94:644df37bb05b 55
Christopher Haster 94:644df37bb05b 56 static void address_to_ipv4(uint8_t *bytes, const char *addr)
Christopher Haster 94:644df37bb05b 57 {
Christopher Haster 94:644df37bb05b 58 sscanf(addr, "%hhd.%hhd.%hhd.%hhd", &bytes[0], &bytes[1], &bytes[2], &bytes[3]);
Christopher Haster 94:644df37bb05b 59 }
Christopher Haster 94:644df37bb05b 60
Christopher Haster 94:644df37bb05b 61 static void address_to_ipv6(uint8_t *bytes, const char *addr)
Christopher Haster 94:644df37bb05b 62 {
Christopher Haster 94:644df37bb05b 63 // TODO support short form (::1, 2001::ffee:100a)
Christopher Haster 94:644df37bb05b 64 // Use a more intellegent algorithm
Christopher Haster 94:644df37bb05b 65 uint16_t shorts[NSAPI_IPv6_BYTES/2];
Christopher Haster 94:644df37bb05b 66 sscanf(addr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
Christopher Haster 94:644df37bb05b 67 &shorts[0], &shorts[1], &shorts[2], &shorts[3],
Christopher Haster 94:644df37bb05b 68 &shorts[4], &shorts[5], &shorts[6], &shorts[7]);
Christopher Haster 94:644df37bb05b 69
Christopher Haster 94:644df37bb05b 70 for (int i = 0; i < NSAPI_IPv6_BYTES/2; i++) {
Christopher Haster 94:644df37bb05b 71 bytes[2*i+0] = (uint8_t)(shorts[i] >> 8);
Christopher Haster 94:644df37bb05b 72 bytes[2*i+1] = (uint8_t)(shorts[i] >> 0);
Christopher Haster 94:644df37bb05b 73 }
Christopher Haster 94:644df37bb05b 74 }
Christopher Haster 94:644df37bb05b 75
Christopher Haster 94:644df37bb05b 76 static void ipv4_to_address(char *addr, const uint8_t *bytes)
Christopher Haster 94:644df37bb05b 77 {
Christopher Haster 94:644df37bb05b 78 sprintf(addr, "%d.%d.%d.%d", bytes[0], bytes[1], bytes[2], bytes[3]);
Christopher Haster 94:644df37bb05b 79 }
Christopher Haster 94:644df37bb05b 80
Christopher Haster 94:644df37bb05b 81 static void ipv6_to_address(char *addr, const uint8_t *bytes)
Christopher Haster 94:644df37bb05b 82 {
Christopher Haster 94:644df37bb05b 83 for (int i = 0; i < NSAPI_IPv6_BYTES; i+=2) {
Christopher Haster 94:644df37bb05b 84 sprintf(&addr[5*i], "%02x%02x", bytes[i], bytes[i+1]);
Christopher Haster 94:644df37bb05b 85 addr[5*i+4] = ':';
Christopher Haster 94:644df37bb05b 86 }
Christopher Haster 94:644df37bb05b 87 addr[NSAPI_IPv6_BYTES-1] = '\0';
Christopher Haster 94:644df37bb05b 88 }
Christopher Haster 94:644df37bb05b 89
Christopher Haster 89:b1d417383c0d 90 SocketAddress::SocketAddress(NetworkInterface *iface, const char *host, uint16_t port)
Christopher Haster 89:b1d417383c0d 91 {
Christopher Haster 94:644df37bb05b 92 // Check for valid IP addresses
Christopher Haster 94:644df37bb05b 93 if (host && address_is_ipv4(host)) {
Christopher Haster 94:644df37bb05b 94 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 95 address_to_ipv4(_ip_bytes, host);
Christopher Haster 94:644df37bb05b 96 } else if (host && address_is_ipv6(host)) {
Christopher Haster 94:644df37bb05b 97 _ip_version = NSAPI_IPv6;
Christopher Haster 94:644df37bb05b 98 address_to_ipv4(_ip_bytes, host);
Christopher Haster 94:644df37bb05b 99 } else {
Christopher Haster 94:644df37bb05b 100 // DNS lookup
Christopher Haster 94:644df37bb05b 101 char addr[NSAPI_IP_SIZE];
Christopher Haster 94:644df37bb05b 102 int err = iface->gethostbyname(host, addr);
Christopher Haster 94:644df37bb05b 103 if (!err) {
Christopher Haster 94:644df37bb05b 104 set_ip_address(addr);
Christopher Haster 94:644df37bb05b 105 set_port(port);
Christopher Haster 94:644df37bb05b 106 } else {
Christopher Haster 94:644df37bb05b 107 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 108 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 109 set_port(0);
Christopher Haster 94:644df37bb05b 110 }
Christopher Haster 89:b1d417383c0d 111 }
Christopher Haster 89:b1d417383c0d 112 }
Christopher Haster 89:b1d417383c0d 113
Christopher Haster 89:b1d417383c0d 114 SocketAddress::SocketAddress(const char *addr, uint16_t port)
Christopher Haster 89:b1d417383c0d 115 {
Christopher Haster 89:b1d417383c0d 116 set_ip_address(addr);
Christopher Haster 89:b1d417383c0d 117 set_port(port);
Christopher Haster 89:b1d417383c0d 118 }
Christopher Haster 89:b1d417383c0d 119
Christopher Haster 94:644df37bb05b 120 SocketAddress::SocketAddress(const void *bytes, nsapi_version_t version, uint16_t port)
Christopher Haster 94:644df37bb05b 121 {
Christopher Haster 94:644df37bb05b 122 set_ip_bytes(bytes, version);
Christopher Haster 94:644df37bb05b 123 set_port(port);
Christopher Haster 94:644df37bb05b 124 }
Christopher Haster 94:644df37bb05b 125
Christopher Haster 89:b1d417383c0d 126 SocketAddress::SocketAddress(const SocketAddress &addr)
Christopher Haster 89:b1d417383c0d 127 {
Christopher Haster 94:644df37bb05b 128 set_ip_bytes(addr.get_ip_bytes(), addr.get_ip_version());
Christopher Haster 89:b1d417383c0d 129 set_port(addr.get_port());
Christopher Haster 89:b1d417383c0d 130 }
Christopher Haster 89:b1d417383c0d 131
Christopher Haster 89:b1d417383c0d 132 void SocketAddress::set_ip_address(const char *addr)
Christopher Haster 89:b1d417383c0d 133 {
Christopher Haster 94:644df37bb05b 134 _ip_address[0] = '\0';
Christopher Haster 94:644df37bb05b 135
Christopher Haster 94:644df37bb05b 136 if (addr && address_is_ipv4(addr)) {
Christopher Haster 94:644df37bb05b 137 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 138 address_to_ipv4(_ip_bytes, addr);
Christopher Haster 94:644df37bb05b 139 } else if (addr && address_is_ipv6(addr)) {
Christopher Haster 94:644df37bb05b 140 _ip_version = NSAPI_IPv6;
Christopher Haster 94:644df37bb05b 141 address_to_ipv4(_ip_bytes, addr);
Christopher Haster 94:644df37bb05b 142 } else {
Christopher Haster 94:644df37bb05b 143 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 144 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 145 }
Christopher Haster 94:644df37bb05b 146 }
Christopher Haster 94:644df37bb05b 147
Christopher Haster 94:644df37bb05b 148 void SocketAddress::set_ip_bytes(const void *bytes, nsapi_version_t version)
Christopher Haster 94:644df37bb05b 149 {
Christopher Haster 94:644df37bb05b 150 _ip_address[0] = '\0';
Christopher Haster 94:644df37bb05b 151
Christopher Haster 94:644df37bb05b 152 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 153 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 154 memcpy(_ip_bytes, bytes, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 155 } else if (_ip_version == NSAPI_IPv6) {
Christopher Haster 94:644df37bb05b 156 _ip_version = NSAPI_IPv6;
Christopher Haster 94:644df37bb05b 157 memcpy(_ip_bytes, bytes, NSAPI_IPv6_BYTES);
Christopher Haster 94:644df37bb05b 158 } else {
Christopher Haster 94:644df37bb05b 159 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 160 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 161 }
Christopher Haster 89:b1d417383c0d 162 }
Christopher Haster 89:b1d417383c0d 163
Christopher Haster 89:b1d417383c0d 164 void SocketAddress::set_port(uint16_t port)
Christopher Haster 89:b1d417383c0d 165 {
Christopher Haster 89:b1d417383c0d 166 _port = port;
Christopher Haster 89:b1d417383c0d 167 }
Christopher Haster 89:b1d417383c0d 168
Christopher Haster 89:b1d417383c0d 169 const char *SocketAddress::get_ip_address() const
Christopher Haster 89:b1d417383c0d 170 {
Christopher Haster 94:644df37bb05b 171 char *ip_address = (char *)_ip_address;
Christopher Haster 94:644df37bb05b 172
Christopher Haster 94:644df37bb05b 173 if (!ip_address[0]) {
Christopher Haster 94:644df37bb05b 174 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 175 ipv4_to_address(ip_address, _ip_bytes);
Christopher Haster 94:644df37bb05b 176 } else if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 177 ipv6_to_address(ip_address, _ip_bytes);
Christopher Haster 94:644df37bb05b 178 }
Christopher Haster 89:b1d417383c0d 179 }
Christopher Haster 94:644df37bb05b 180
Christopher Haster 94:644df37bb05b 181 return ip_address;
Christopher Haster 94:644df37bb05b 182 }
Christopher Haster 94:644df37bb05b 183
Christopher Haster 94:644df37bb05b 184 const void *SocketAddress::get_ip_bytes() const
Christopher Haster 94:644df37bb05b 185 {
Christopher Haster 94:644df37bb05b 186 return _ip_bytes;
Christopher Haster 94:644df37bb05b 187 }
Christopher Haster 94:644df37bb05b 188
Christopher Haster 94:644df37bb05b 189 nsapi_version_t SocketAddress::get_ip_version() const
Christopher Haster 94:644df37bb05b 190 {
Christopher Haster 94:644df37bb05b 191 return _ip_version;
Christopher Haster 89:b1d417383c0d 192 }
Christopher Haster 89:b1d417383c0d 193
Christopher Haster 89:b1d417383c0d 194 uint16_t SocketAddress::get_port() const
Christopher Haster 89:b1d417383c0d 195 {
Christopher Haster 89:b1d417383c0d 196 return _port;
Christopher Haster 89:b1d417383c0d 197 }
Christopher Haster 94:644df37bb05b 198
Christopher Haster 94:644df37bb05b 199 SocketAddress::operator bool() const
Christopher Haster 94:644df37bb05b 200 {
Christopher Haster 94:644df37bb05b 201 int count = 0;
Christopher Haster 94:644df37bb05b 202 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 203 count = NSAPI_IPv4_BYTES;
Christopher Haster 94:644df37bb05b 204 } else if (_ip_version == NSAPI_IPv6) {
Christopher Haster 94:644df37bb05b 205 count = NSAPI_IPv6_BYTES;
Christopher Haster 94:644df37bb05b 206 }
Christopher Haster 94:644df37bb05b 207
Christopher Haster 94:644df37bb05b 208 for (int i = 0; i < count; i++) {
Christopher Haster 94:644df37bb05b 209 if (_ip_bytes[i]) {
Christopher Haster 94:644df37bb05b 210 return true;
Christopher Haster 94:644df37bb05b 211 }
Christopher Haster 94:644df37bb05b 212 }
Christopher Haster 94:644df37bb05b 213
Christopher Haster 94:644df37bb05b 214 return false;
Christopher Haster 94:644df37bb05b 215 }