DongEun Koak / NetworkSocketAPI

NetworkSocketAPI

Dependencies:   DnsQuery

Dependents:   HelloWizFi250Interface

Fork of NetworkSocketAPI by NetworkSocketAPI

SocketAddress.cpp@104:d28d8b508e7c, 2016-04-19 (annotated)

Committer:
Christopher Haster
Date:
Tue Apr 19 18:26:21 2016 -0500
Revision:
104:d28d8b508e7c
Parent:
100:90d8f662de83
Child:
105:2fd212f8da61
Revised documentation for Interface classes

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 100:90d8f662de83 22
Christopher Haster 100:90d8f662de83 23 static bool ipv4_is_valid(const char *addr)
Christopher Haster 94:644df37bb05b 24 {
Christopher Haster 94:644df37bb05b 25 int i = 0;
Christopher Haster 94:644df37bb05b 26
Christopher Haster 94:644df37bb05b 27 // Check each digit for [0-9.]
Christopher Haster 94:644df37bb05b 28 for (; addr[i]; i++) {
Christopher Haster 94:644df37bb05b 29 if (!(addr[i] >= '0' && addr[i] <= '9') && addr[i] != '.') {
Christopher Haster 94:644df37bb05b 30 return false;
Christopher Haster 94:644df37bb05b 31 }
Christopher Haster 94:644df37bb05b 32 }
Christopher Haster 94:644df37bb05b 33
Christopher Haster 94:644df37bb05b 34 // Ending with '.' garuntees host
Christopher Haster 94:644df37bb05b 35 if (i > 0 && addr[i-1] == '.') {
Christopher Haster 94:644df37bb05b 36 return false;
Christopher Haster 94:644df37bb05b 37 }
Christopher Haster 94:644df37bb05b 38
Christopher Haster 94:644df37bb05b 39 return true;
Christopher Haster 94:644df37bb05b 40 }
Christopher Haster 94:644df37bb05b 41
Christopher Haster 100:90d8f662de83 42 static bool ipv6_is_valid(const char *addr)
Christopher Haster 94:644df37bb05b 43 {
Christopher Haster 94:644df37bb05b 44 // Check each digit for [0-9a-fA-F:]
Christopher Haster 94:644df37bb05b 45 for (int i = 0; addr[i]; i++) {
Christopher Haster 94:644df37bb05b 46 if (!(addr[i] >= '0' && addr[i] <= '9') &&
Christopher Haster 94:644df37bb05b 47 !(addr[i] >= 'a' && addr[i] <= 'f') &&
Christopher Haster 94:644df37bb05b 48 !(addr[i] >= 'A' && addr[i] <= 'F') &&
Christopher Haster 94:644df37bb05b 49 addr[i] != ':') {
Christopher Haster 94:644df37bb05b 50 return false;
Christopher Haster 94:644df37bb05b 51 }
Christopher Haster 94:644df37bb05b 52 }
Christopher Haster 94:644df37bb05b 53
Christopher Haster 94:644df37bb05b 54 return true;
Christopher Haster 94:644df37bb05b 55 }
Christopher Haster 94:644df37bb05b 56
Christopher Haster 100:90d8f662de83 57 static void ipv4_from_address(uint8_t *bytes, const char *addr)
Christopher Haster 94:644df37bb05b 58 {
Christopher Haster 100:90d8f662de83 59 sscanf(addr, "%hhu.%hhu.%hhu.%hhu", &bytes[0], &bytes[1], &bytes[2], &bytes[3]);
Christopher Haster 94:644df37bb05b 60 }
Christopher Haster 94:644df37bb05b 61
Christopher Haster 100:90d8f662de83 62 static int ipv6_scan_chunk(uint16_t *shorts, const char *chunk) {
Christopher Haster 100:90d8f662de83 63 int count = 0;
Christopher Haster 100:90d8f662de83 64 int i = 0;
Christopher Haster 100:90d8f662de83 65
Christopher Haster 100:90d8f662de83 66 for (; count < NSAPI_IPv6_BYTES/2; count++) {
Christopher Haster 100:90d8f662de83 67 int scanned = sscanf(&chunk[i], "%hx", &shorts[count]);
Christopher Haster 100:90d8f662de83 68 if (scanned < 1) {
Christopher Haster 100:90d8f662de83 69 return count;
Christopher Haster 100:90d8f662de83 70 }
Christopher Haster 100:90d8f662de83 71
Christopher Haster 100:90d8f662de83 72 for (; chunk[i] != ':'; i++) {
Christopher Haster 100:90d8f662de83 73 if (!chunk[i]) {
Christopher Haster 100:90d8f662de83 74 return count+1;
Christopher Haster 100:90d8f662de83 75 }
Christopher Haster 100:90d8f662de83 76 }
Christopher Haster 100:90d8f662de83 77
Christopher Haster 100:90d8f662de83 78 i++;
Christopher Haster 100:90d8f662de83 79 }
Christopher Haster 100:90d8f662de83 80
Christopher Haster 100:90d8f662de83 81 return count;
Christopher Haster 100:90d8f662de83 82 }
Christopher Haster 100:90d8f662de83 83
Christopher Haster 100:90d8f662de83 84 static void ipv6_from_address(uint8_t *bytes, const char *addr)
Christopher Haster 94:644df37bb05b 85 {
Christopher Haster 100:90d8f662de83 86 // Start with zeroed address
Christopher Haster 94:644df37bb05b 87 uint16_t shorts[NSAPI_IPv6_BYTES/2];
Christopher Haster 100:90d8f662de83 88 memset(shorts, 0, sizeof shorts);
Christopher Haster 100:90d8f662de83 89
Christopher Haster 100:90d8f662de83 90 int suffix = 0;
Christopher Haster 94:644df37bb05b 91
Christopher Haster 100:90d8f662de83 92 // Find double colons and scan suffix
Christopher Haster 100:90d8f662de83 93 for (int i = 0; addr[i]; i++) {
Christopher Haster 100:90d8f662de83 94 if (addr[i] == ':' && addr[i+1] == ':') {
Christopher Haster 100:90d8f662de83 95 suffix = ipv6_scan_chunk(shorts, &addr[i+2]);
Christopher Haster 100:90d8f662de83 96 break;
Christopher Haster 100:90d8f662de83 97 }
Christopher Haster 100:90d8f662de83 98 }
Christopher Haster 100:90d8f662de83 99
Christopher Haster 100:90d8f662de83 100 // Move suffix to end
Christopher Haster 100:90d8f662de83 101 memmove(&shorts[NSAPI_IPv6_BYTES/2-suffix], &shorts[0],
Christopher Haster 100:90d8f662de83 102 suffix*sizeof(uint16_t));
Christopher Haster 100:90d8f662de83 103
Christopher Haster 100:90d8f662de83 104 // Scan prefix
Christopher Haster 100:90d8f662de83 105 ipv6_scan_chunk(shorts, &addr[0]);
Christopher Haster 100:90d8f662de83 106
Christopher Haster 100:90d8f662de83 107 // Flip bytes
Christopher Haster 94:644df37bb05b 108 for (int i = 0; i < NSAPI_IPv6_BYTES/2; i++) {
Christopher Haster 94:644df37bb05b 109 bytes[2*i+0] = (uint8_t)(shorts[i] >> 8);
Christopher Haster 94:644df37bb05b 110 bytes[2*i+1] = (uint8_t)(shorts[i] >> 0);
Christopher Haster 94:644df37bb05b 111 }
Christopher Haster 94:644df37bb05b 112 }
Christopher Haster 94:644df37bb05b 113
Christopher Haster 94:644df37bb05b 114 static void ipv4_to_address(char *addr, const uint8_t *bytes)
Christopher Haster 94:644df37bb05b 115 {
Christopher Haster 94:644df37bb05b 116 sprintf(addr, "%d.%d.%d.%d", bytes[0], bytes[1], bytes[2], bytes[3]);
Christopher Haster 94:644df37bb05b 117 }
Christopher Haster 94:644df37bb05b 118
Christopher Haster 94:644df37bb05b 119 static void ipv6_to_address(char *addr, const uint8_t *bytes)
Christopher Haster 94:644df37bb05b 120 {
Christopher Haster 100:90d8f662de83 121 for (int i = 0; i < NSAPI_IPv6_BYTES/2; i++) {
Christopher Haster 100:90d8f662de83 122 sprintf(&addr[5*i], "%02x%02x", bytes[2*i], bytes[2*i+1]);
Christopher Haster 100:90d8f662de83 123 addr[5*i+4] = ':';
Christopher Haster 100:90d8f662de83 124 }
Christopher Haster 100:90d8f662de83 125 addr[NSAPI_IPv6_SIZE-1] = '\0';
Christopher Haster 100:90d8f662de83 126 }
Christopher Haster 97:68232387bc75 127
Christopher Haster 94:644df37bb05b 128
Christopher Haster 89:b1d417383c0d 129 SocketAddress::SocketAddress(NetworkInterface *iface, const char *host, uint16_t port)
Christopher Haster 89:b1d417383c0d 130 {
Christopher Haster 94:644df37bb05b 131 // Check for valid IP addresses
Christopher Haster 100:90d8f662de83 132 if (host && ipv4_is_valid(host)) {
Christopher Haster 94:644df37bb05b 133 _ip_version = NSAPI_IPv4;
Christopher Haster 100:90d8f662de83 134 ipv4_from_address(_ip_bytes, host);
Christopher Haster 100:90d8f662de83 135 } else if (host && ipv6_is_valid(host)) {
Christopher Haster 94:644df37bb05b 136 _ip_version = NSAPI_IPv6;
Christopher Haster 100:90d8f662de83 137 ipv4_from_address(_ip_bytes, host);
Christopher Haster 94:644df37bb05b 138 } else {
Christopher Haster 94:644df37bb05b 139 // DNS lookup
Christopher Haster 95:b3c679f20d13 140 int err = iface->gethostbyname(this, host);
Christopher Haster 94:644df37bb05b 141 if (!err) {
Christopher Haster 94:644df37bb05b 142 set_port(port);
Christopher Haster 94:644df37bb05b 143 } else {
Christopher Haster 94:644df37bb05b 144 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 145 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 146 set_port(0);
Christopher Haster 94:644df37bb05b 147 }
Christopher Haster 89:b1d417383c0d 148 }
Christopher Haster 89:b1d417383c0d 149 }
Christopher Haster 89:b1d417383c0d 150
Christopher Haster 89:b1d417383c0d 151 SocketAddress::SocketAddress(const char *addr, uint16_t port)
Christopher Haster 89:b1d417383c0d 152 {
Christopher Haster 89:b1d417383c0d 153 set_ip_address(addr);
Christopher Haster 89:b1d417383c0d 154 set_port(port);
Christopher Haster 89:b1d417383c0d 155 }
Christopher Haster 89:b1d417383c0d 156
Christopher Haster 94:644df37bb05b 157 SocketAddress::SocketAddress(const void *bytes, nsapi_version_t version, uint16_t port)
Christopher Haster 94:644df37bb05b 158 {
Christopher Haster 94:644df37bb05b 159 set_ip_bytes(bytes, version);
Christopher Haster 94:644df37bb05b 160 set_port(port);
Christopher Haster 94:644df37bb05b 161 }
Christopher Haster 94:644df37bb05b 162
Christopher Haster 89:b1d417383c0d 163 SocketAddress::SocketAddress(const SocketAddress &addr)
Christopher Haster 89:b1d417383c0d 164 {
Christopher Haster 94:644df37bb05b 165 set_ip_bytes(addr.get_ip_bytes(), addr.get_ip_version());
Christopher Haster 89:b1d417383c0d 166 set_port(addr.get_port());
Christopher Haster 89:b1d417383c0d 167 }
Christopher Haster 89:b1d417383c0d 168
Christopher Haster 89:b1d417383c0d 169 void SocketAddress::set_ip_address(const char *addr)
Christopher Haster 89:b1d417383c0d 170 {
Christopher Haster 94:644df37bb05b 171 _ip_address[0] = '\0';
Christopher Haster 94:644df37bb05b 172
Christopher Haster 100:90d8f662de83 173 if (addr && ipv4_is_valid(addr)) {
Christopher Haster 94:644df37bb05b 174 _ip_version = NSAPI_IPv4;
Christopher Haster 100:90d8f662de83 175 ipv4_from_address(_ip_bytes, addr);
Christopher Haster 100:90d8f662de83 176 } else if (addr && ipv6_is_valid(addr)) {
Christopher Haster 94:644df37bb05b 177 _ip_version = NSAPI_IPv6;
Christopher Haster 100:90d8f662de83 178 ipv6_from_address(_ip_bytes, addr);
Christopher Haster 94:644df37bb05b 179 } else {
Christopher Haster 94:644df37bb05b 180 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 181 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 182 }
Christopher Haster 94:644df37bb05b 183 }
Christopher Haster 94:644df37bb05b 184
Christopher Haster 94:644df37bb05b 185 void SocketAddress::set_ip_bytes(const void *bytes, nsapi_version_t version)
Christopher Haster 94:644df37bb05b 186 {
Christopher Haster 94:644df37bb05b 187 _ip_address[0] = '\0';
Christopher Haster 94:644df37bb05b 188
Christopher Haster 94:644df37bb05b 189 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 190 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 191 memcpy(_ip_bytes, bytes, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 192 } else if (_ip_version == NSAPI_IPv6) {
Christopher Haster 94:644df37bb05b 193 _ip_version = NSAPI_IPv6;
Christopher Haster 94:644df37bb05b 194 memcpy(_ip_bytes, bytes, NSAPI_IPv6_BYTES);
Christopher Haster 94:644df37bb05b 195 } else {
Christopher Haster 94:644df37bb05b 196 _ip_version = NSAPI_IPv4;
Christopher Haster 94:644df37bb05b 197 memset(_ip_bytes, 0, NSAPI_IPv4_BYTES);
Christopher Haster 94:644df37bb05b 198 }
Christopher Haster 89:b1d417383c0d 199 }
Christopher Haster 89:b1d417383c0d 200
Christopher Haster 89:b1d417383c0d 201 void SocketAddress::set_port(uint16_t port)
Christopher Haster 89:b1d417383c0d 202 {
Christopher Haster 89:b1d417383c0d 203 _port = port;
Christopher Haster 89:b1d417383c0d 204 }
Christopher Haster 89:b1d417383c0d 205
Christopher Haster 89:b1d417383c0d 206 const char *SocketAddress::get_ip_address() const
Christopher Haster 89:b1d417383c0d 207 {
Christopher Haster 94:644df37bb05b 208 char *ip_address = (char *)_ip_address;
Christopher Haster 94:644df37bb05b 209
Christopher Haster 94:644df37bb05b 210 if (!ip_address[0]) {
Christopher Haster 94:644df37bb05b 211 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 212 ipv4_to_address(ip_address, _ip_bytes);
Christopher Haster 97:68232387bc75 213 } else if (_ip_version == NSAPI_IPv6) {
Christopher Haster 94:644df37bb05b 214 ipv6_to_address(ip_address, _ip_bytes);
Christopher Haster 94:644df37bb05b 215 }
Christopher Haster 89:b1d417383c0d 216 }
Christopher Haster 94:644df37bb05b 217
Christopher Haster 94:644df37bb05b 218 return ip_address;
Christopher Haster 94:644df37bb05b 219 }
Christopher Haster 94:644df37bb05b 220
Christopher Haster 94:644df37bb05b 221 const void *SocketAddress::get_ip_bytes() const
Christopher Haster 94:644df37bb05b 222 {
Christopher Haster 94:644df37bb05b 223 return _ip_bytes;
Christopher Haster 94:644df37bb05b 224 }
Christopher Haster 94:644df37bb05b 225
Christopher Haster 94:644df37bb05b 226 nsapi_version_t SocketAddress::get_ip_version() const
Christopher Haster 94:644df37bb05b 227 {
Christopher Haster 94:644df37bb05b 228 return _ip_version;
Christopher Haster 89:b1d417383c0d 229 }
Christopher Haster 89:b1d417383c0d 230
Christopher Haster 89:b1d417383c0d 231 uint16_t SocketAddress::get_port() const
Christopher Haster 89:b1d417383c0d 232 {
Christopher Haster 89:b1d417383c0d 233 return _port;
Christopher Haster 89:b1d417383c0d 234 }
Christopher Haster 94:644df37bb05b 235
Christopher Haster 94:644df37bb05b 236 SocketAddress::operator bool() const
Christopher Haster 94:644df37bb05b 237 {
Christopher Haster 94:644df37bb05b 238 int count = 0;
Christopher Haster 94:644df37bb05b 239 if (_ip_version == NSAPI_IPv4) {
Christopher Haster 94:644df37bb05b 240 count = NSAPI_IPv4_BYTES;
Christopher Haster 94:644df37bb05b 241 } else if (_ip_version == NSAPI_IPv6) {
Christopher Haster 94:644df37bb05b 242 count = NSAPI_IPv6_BYTES;
Christopher Haster 94:644df37bb05b 243 }
Christopher Haster 94:644df37bb05b 244
Christopher Haster 94:644df37bb05b 245 for (int i = 0; i < count; i++) {
Christopher Haster 94:644df37bb05b 246 if (_ip_bytes[i]) {
Christopher Haster 94:644df37bb05b 247 return true;
Christopher Haster 94:644df37bb05b 248 }
Christopher Haster 94:644df37bb05b 249 }
Christopher Haster 94:644df37bb05b 250
Christopher Haster 94:644df37bb05b 251 return false;
Christopher Haster 94:644df37bb05b 252 }