EL4121 Embedded System / mbed-os

mbed-os

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features/netsocket/NetworkStack.cpp@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* Socket
be_bryan 0:b74591d5ab33 2 * Copyright (c) 2015 ARM Limited
be_bryan 0:b74591d5ab33 3 *
be_bryan 0:b74591d5ab33 4 * Licensed under the Apache License, Version 2.0 (the "License");
be_bryan 0:b74591d5ab33 5 * you may not use this file except in compliance with the License.
be_bryan 0:b74591d5ab33 6 * You may obtain a copy of the License at
be_bryan 0:b74591d5ab33 7 *
be_bryan 0:b74591d5ab33 8 * http://www.apache.org/licenses/LICENSE-2.0
be_bryan 0:b74591d5ab33 9 *
be_bryan 0:b74591d5ab33 10 * Unless required by applicable law or agreed to in writing, software
be_bryan 0:b74591d5ab33 11 * distributed under the License is distributed on an "AS IS" BASIS,
be_bryan 0:b74591d5ab33 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
be_bryan 0:b74591d5ab33 13 * See the License for the specific language governing permissions and
be_bryan 0:b74591d5ab33 14 * limitations under the License.
be_bryan 0:b74591d5ab33 15 */
be_bryan 0:b74591d5ab33 16
be_bryan 0:b74591d5ab33 17 #include "NetworkStack.h"
be_bryan 0:b74591d5ab33 18 #include "nsapi_dns.h"
be_bryan 0:b74591d5ab33 19 #include "mbed.h"
be_bryan 0:b74591d5ab33 20 #include "stddef.h"
be_bryan 0:b74591d5ab33 21 #include <new>
be_bryan 0:b74591d5ab33 22
be_bryan 0:b74591d5ab33 23
be_bryan 0:b74591d5ab33 24 // Default NetworkStack operations
be_bryan 0:b74591d5ab33 25 nsapi_error_t NetworkStack::gethostbyname(const char *name, SocketAddress *address, nsapi_version_t version)
be_bryan 0:b74591d5ab33 26 {
be_bryan 0:b74591d5ab33 27 // check for simple ip addresses
be_bryan 0:b74591d5ab33 28 if (address->set_ip_address(name)) {
be_bryan 0:b74591d5ab33 29 if (version != NSAPI_UNSPEC && address->get_ip_version() != version) {
be_bryan 0:b74591d5ab33 30 return NSAPI_ERROR_DNS_FAILURE;
be_bryan 0:b74591d5ab33 31 }
be_bryan 0:b74591d5ab33 32
be_bryan 0:b74591d5ab33 33 return NSAPI_ERROR_OK;
be_bryan 0:b74591d5ab33 34 }
be_bryan 0:b74591d5ab33 35
be_bryan 0:b74591d5ab33 36 // if the version is unspecified, try to guess the version from the
be_bryan 0:b74591d5ab33 37 // ip address of the underlying stack
be_bryan 0:b74591d5ab33 38 if (version == NSAPI_UNSPEC) {
be_bryan 0:b74591d5ab33 39 SocketAddress testaddress;
be_bryan 0:b74591d5ab33 40 if (testaddress.set_ip_address(this->get_ip_address())) {
be_bryan 0:b74591d5ab33 41 version = testaddress.get_ip_version();
be_bryan 0:b74591d5ab33 42 }
be_bryan 0:b74591d5ab33 43 }
be_bryan 0:b74591d5ab33 44
be_bryan 0:b74591d5ab33 45 return nsapi_dns_query(this, name, address, version);
be_bryan 0:b74591d5ab33 46 }
be_bryan 0:b74591d5ab33 47
be_bryan 0:b74591d5ab33 48 nsapi_error_t NetworkStack::add_dns_server(const SocketAddress &address)
be_bryan 0:b74591d5ab33 49 {
be_bryan 0:b74591d5ab33 50 return nsapi_dns_add_server(address);
be_bryan 0:b74591d5ab33 51 }
be_bryan 0:b74591d5ab33 52
be_bryan 0:b74591d5ab33 53 nsapi_error_t NetworkStack::setstackopt(int level, int optname, const void *optval, unsigned optlen)
be_bryan 0:b74591d5ab33 54 {
be_bryan 0:b74591d5ab33 55 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 56 }
be_bryan 0:b74591d5ab33 57
be_bryan 0:b74591d5ab33 58 nsapi_error_t NetworkStack::getstackopt(int level, int optname, void *optval, unsigned *optlen)
be_bryan 0:b74591d5ab33 59 {
be_bryan 0:b74591d5ab33 60 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 61 }
be_bryan 0:b74591d5ab33 62
be_bryan 0:b74591d5ab33 63 nsapi_error_t NetworkStack::setsockopt(void *handle, int level, int optname, const void *optval, unsigned optlen)
be_bryan 0:b74591d5ab33 64 {
be_bryan 0:b74591d5ab33 65 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 66 }
be_bryan 0:b74591d5ab33 67
be_bryan 0:b74591d5ab33 68 nsapi_error_t NetworkStack::getsockopt(void *handle, int level, int optname, void *optval, unsigned *optlen)
be_bryan 0:b74591d5ab33 69 {
be_bryan 0:b74591d5ab33 70 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 71 }
be_bryan 0:b74591d5ab33 72
be_bryan 0:b74591d5ab33 73
be_bryan 0:b74591d5ab33 74 // NetworkStackWrapper class for encapsulating the raw nsapi_stack structure
be_bryan 0:b74591d5ab33 75 class NetworkStackWrapper : public NetworkStack
be_bryan 0:b74591d5ab33 76 {
be_bryan 0:b74591d5ab33 77 private:
be_bryan 0:b74591d5ab33 78 inline nsapi_stack_t *_stack()
be_bryan 0:b74591d5ab33 79 {
be_bryan 0:b74591d5ab33 80 return reinterpret_cast<nsapi_stack_t *>(
be_bryan 0:b74591d5ab33 81 reinterpret_cast<uint8_t *>(this)
be_bryan 0:b74591d5ab33 82 - offsetof(nsapi_stack_t, _stack_buffer));
be_bryan 0:b74591d5ab33 83 }
be_bryan 0:b74591d5ab33 84
be_bryan 0:b74591d5ab33 85 inline const nsapi_stack_api_t *_stack_api()
be_bryan 0:b74591d5ab33 86 {
be_bryan 0:b74591d5ab33 87 return _stack()->stack_api;
be_bryan 0:b74591d5ab33 88 }
be_bryan 0:b74591d5ab33 89
be_bryan 0:b74591d5ab33 90 public:
be_bryan 0:b74591d5ab33 91 virtual const char *get_ip_address()
be_bryan 0:b74591d5ab33 92 {
be_bryan 0:b74591d5ab33 93 if (!_stack_api()->get_ip_address) {
be_bryan 0:b74591d5ab33 94 return 0;
be_bryan 0:b74591d5ab33 95 }
be_bryan 0:b74591d5ab33 96
be_bryan 0:b74591d5ab33 97 static uint8_t buffer[sizeof(SocketAddress)];
be_bryan 0:b74591d5ab33 98 SocketAddress *address = new (buffer) SocketAddress(_stack_api()->get_ip_address(_stack()));
be_bryan 0:b74591d5ab33 99 return address->get_ip_address();
be_bryan 0:b74591d5ab33 100 }
be_bryan 0:b74591d5ab33 101
be_bryan 0:b74591d5ab33 102 virtual nsapi_error_t gethostbyname(const char *name, SocketAddress *address, nsapi_version_t version)
be_bryan 0:b74591d5ab33 103 {
be_bryan 0:b74591d5ab33 104 if (!_stack_api()->gethostbyname) {
be_bryan 0:b74591d5ab33 105 return NetworkStack::gethostbyname(name, address, version);
be_bryan 0:b74591d5ab33 106 }
be_bryan 0:b74591d5ab33 107
be_bryan 0:b74591d5ab33 108 nsapi_addr_t addr = {NSAPI_UNSPEC, 0};
be_bryan 0:b74591d5ab33 109 nsapi_error_t err = _stack_api()->gethostbyname(_stack(), name, &addr, version);
be_bryan 0:b74591d5ab33 110 address->set_addr(addr);
be_bryan 0:b74591d5ab33 111 return err;
be_bryan 0:b74591d5ab33 112 }
be_bryan 0:b74591d5ab33 113
be_bryan 0:b74591d5ab33 114 virtual nsapi_error_t add_dns_server(const SocketAddress &address)
be_bryan 0:b74591d5ab33 115 {
be_bryan 0:b74591d5ab33 116 if (!_stack_api()->add_dns_server) {
be_bryan 0:b74591d5ab33 117 return NetworkStack::add_dns_server(address);
be_bryan 0:b74591d5ab33 118 }
be_bryan 0:b74591d5ab33 119
be_bryan 0:b74591d5ab33 120 return _stack_api()->add_dns_server(_stack(), address.get_addr());
be_bryan 0:b74591d5ab33 121 }
be_bryan 0:b74591d5ab33 122
be_bryan 0:b74591d5ab33 123 virtual nsapi_error_t setstackopt(int level, int optname, const void *optval, unsigned optlen)
be_bryan 0:b74591d5ab33 124 {
be_bryan 0:b74591d5ab33 125 if (!_stack_api()->setstackopt) {
be_bryan 0:b74591d5ab33 126 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 127 }
be_bryan 0:b74591d5ab33 128
be_bryan 0:b74591d5ab33 129 return _stack_api()->setstackopt(_stack(), level, optname, optval, optlen);
be_bryan 0:b74591d5ab33 130 }
be_bryan 0:b74591d5ab33 131
be_bryan 0:b74591d5ab33 132 virtual nsapi_error_t getstackopt(int level, int optname, void *optval, unsigned *optlen)
be_bryan 0:b74591d5ab33 133 {
be_bryan 0:b74591d5ab33 134 if (!_stack_api()->getstackopt) {
be_bryan 0:b74591d5ab33 135 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 136 }
be_bryan 0:b74591d5ab33 137
be_bryan 0:b74591d5ab33 138 return _stack_api()->getstackopt(_stack(), level, optname, optval, optlen);
be_bryan 0:b74591d5ab33 139 }
be_bryan 0:b74591d5ab33 140
be_bryan 0:b74591d5ab33 141 protected:
be_bryan 0:b74591d5ab33 142 virtual nsapi_error_t socket_open(nsapi_socket_t *socket, nsapi_protocol_t proto)
be_bryan 0:b74591d5ab33 143 {
be_bryan 0:b74591d5ab33 144 if (!_stack_api()->socket_open) {
be_bryan 0:b74591d5ab33 145 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 146 }
be_bryan 0:b74591d5ab33 147
be_bryan 0:b74591d5ab33 148 return _stack_api()->socket_open(_stack(), socket, proto);
be_bryan 0:b74591d5ab33 149 }
be_bryan 0:b74591d5ab33 150
be_bryan 0:b74591d5ab33 151 virtual nsapi_error_t socket_close(nsapi_socket_t socket)
be_bryan 0:b74591d5ab33 152 {
be_bryan 0:b74591d5ab33 153 if (!_stack_api()->socket_close) {
be_bryan 0:b74591d5ab33 154 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 155 }
be_bryan 0:b74591d5ab33 156
be_bryan 0:b74591d5ab33 157 return _stack_api()->socket_close(_stack(), socket);
be_bryan 0:b74591d5ab33 158 }
be_bryan 0:b74591d5ab33 159
be_bryan 0:b74591d5ab33 160 virtual nsapi_error_t socket_bind(nsapi_socket_t socket, const SocketAddress &address)
be_bryan 0:b74591d5ab33 161 {
be_bryan 0:b74591d5ab33 162 if (!_stack_api()->socket_bind) {
be_bryan 0:b74591d5ab33 163 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 164 }
be_bryan 0:b74591d5ab33 165
be_bryan 0:b74591d5ab33 166 return _stack_api()->socket_bind(_stack(), socket, address.get_addr(), address.get_port());
be_bryan 0:b74591d5ab33 167 }
be_bryan 0:b74591d5ab33 168
be_bryan 0:b74591d5ab33 169 virtual nsapi_error_t socket_listen(nsapi_socket_t socket, int backlog)
be_bryan 0:b74591d5ab33 170 {
be_bryan 0:b74591d5ab33 171 if (!_stack_api()->socket_listen) {
be_bryan 0:b74591d5ab33 172 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 173 }
be_bryan 0:b74591d5ab33 174
be_bryan 0:b74591d5ab33 175 return _stack_api()->socket_listen(_stack(), socket, backlog);
be_bryan 0:b74591d5ab33 176 }
be_bryan 0:b74591d5ab33 177
be_bryan 0:b74591d5ab33 178 virtual nsapi_error_t socket_connect(nsapi_socket_t socket, const SocketAddress &address)
be_bryan 0:b74591d5ab33 179 {
be_bryan 0:b74591d5ab33 180 if (!_stack_api()->socket_connect) {
be_bryan 0:b74591d5ab33 181 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 182 }
be_bryan 0:b74591d5ab33 183
be_bryan 0:b74591d5ab33 184 return _stack_api()->socket_connect(_stack(), socket, address.get_addr(), address.get_port());
be_bryan 0:b74591d5ab33 185 }
be_bryan 0:b74591d5ab33 186
be_bryan 0:b74591d5ab33 187 virtual nsapi_error_t socket_accept(nsapi_socket_t server, nsapi_socket_t *socket, SocketAddress *address)
be_bryan 0:b74591d5ab33 188 {
be_bryan 0:b74591d5ab33 189 if (!_stack_api()->socket_accept) {
be_bryan 0:b74591d5ab33 190 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 191 }
be_bryan 0:b74591d5ab33 192
be_bryan 0:b74591d5ab33 193 nsapi_addr_t addr = {NSAPI_IPv4, 0};
be_bryan 0:b74591d5ab33 194 uint16_t port = 0;
be_bryan 0:b74591d5ab33 195
be_bryan 0:b74591d5ab33 196 nsapi_error_t err = _stack_api()->socket_accept(_stack(), server, socket, &addr, &port);
be_bryan 0:b74591d5ab33 197
be_bryan 0:b74591d5ab33 198 if (address) {
be_bryan 0:b74591d5ab33 199 address->set_addr(addr);
be_bryan 0:b74591d5ab33 200 address->set_port(port);
be_bryan 0:b74591d5ab33 201 }
be_bryan 0:b74591d5ab33 202
be_bryan 0:b74591d5ab33 203 return err;
be_bryan 0:b74591d5ab33 204 }
be_bryan 0:b74591d5ab33 205
be_bryan 0:b74591d5ab33 206 virtual nsapi_size_or_error_t socket_send(nsapi_socket_t socket, const void *data, nsapi_size_t size)
be_bryan 0:b74591d5ab33 207 {
be_bryan 0:b74591d5ab33 208 if (!_stack_api()->socket_send) {
be_bryan 0:b74591d5ab33 209 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 210 }
be_bryan 0:b74591d5ab33 211
be_bryan 0:b74591d5ab33 212 return _stack_api()->socket_send(_stack(), socket, data, size);
be_bryan 0:b74591d5ab33 213 }
be_bryan 0:b74591d5ab33 214
be_bryan 0:b74591d5ab33 215 virtual nsapi_size_or_error_t socket_recv(nsapi_socket_t socket, void *data, nsapi_size_t size)
be_bryan 0:b74591d5ab33 216 {
be_bryan 0:b74591d5ab33 217 if (!_stack_api()->socket_recv) {
be_bryan 0:b74591d5ab33 218 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 219 }
be_bryan 0:b74591d5ab33 220
be_bryan 0:b74591d5ab33 221 return _stack_api()->socket_recv(_stack(), socket, data, size);
be_bryan 0:b74591d5ab33 222 }
be_bryan 0:b74591d5ab33 223
be_bryan 0:b74591d5ab33 224 virtual nsapi_size_or_error_t socket_sendto(nsapi_socket_t socket, const SocketAddress &address, const void *data, nsapi_size_t size)
be_bryan 0:b74591d5ab33 225 {
be_bryan 0:b74591d5ab33 226 if (!_stack_api()->socket_sendto) {
be_bryan 0:b74591d5ab33 227 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 228 }
be_bryan 0:b74591d5ab33 229
be_bryan 0:b74591d5ab33 230 return _stack_api()->socket_sendto(_stack(), socket, address.get_addr(), address.get_port(), data, size);
be_bryan 0:b74591d5ab33 231 }
be_bryan 0:b74591d5ab33 232
be_bryan 0:b74591d5ab33 233 virtual nsapi_size_or_error_t socket_recvfrom(nsapi_socket_t socket, SocketAddress *address, void *data, nsapi_size_t size)
be_bryan 0:b74591d5ab33 234 {
be_bryan 0:b74591d5ab33 235 if (!_stack_api()->socket_recvfrom) {
be_bryan 0:b74591d5ab33 236 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 237 }
be_bryan 0:b74591d5ab33 238
be_bryan 0:b74591d5ab33 239 nsapi_addr_t addr = {NSAPI_IPv4, 0};
be_bryan 0:b74591d5ab33 240 uint16_t port = 0;
be_bryan 0:b74591d5ab33 241
be_bryan 0:b74591d5ab33 242 nsapi_size_or_error_t err = _stack_api()->socket_recvfrom(_stack(), socket, &addr, &port, data, size);
be_bryan 0:b74591d5ab33 243
be_bryan 0:b74591d5ab33 244 if (address) {
be_bryan 0:b74591d5ab33 245 address->set_addr(addr);
be_bryan 0:b74591d5ab33 246 address->set_port(port);
be_bryan 0:b74591d5ab33 247 }
be_bryan 0:b74591d5ab33 248
be_bryan 0:b74591d5ab33 249 return err;
be_bryan 0:b74591d5ab33 250 }
be_bryan 0:b74591d5ab33 251
be_bryan 0:b74591d5ab33 252 virtual void socket_attach(nsapi_socket_t socket, void (*callback)(void *), void *data)
be_bryan 0:b74591d5ab33 253 {
be_bryan 0:b74591d5ab33 254 if (!_stack_api()->socket_attach) {
be_bryan 0:b74591d5ab33 255 return;
be_bryan 0:b74591d5ab33 256 }
be_bryan 0:b74591d5ab33 257
be_bryan 0:b74591d5ab33 258 return _stack_api()->socket_attach(_stack(), socket, callback, data);
be_bryan 0:b74591d5ab33 259 }
be_bryan 0:b74591d5ab33 260
be_bryan 0:b74591d5ab33 261 virtual nsapi_error_t setsockopt(nsapi_socket_t socket, int level, int optname, const void *optval, unsigned optlen)
be_bryan 0:b74591d5ab33 262 {
be_bryan 0:b74591d5ab33 263 if (!_stack_api()->setsockopt) {
be_bryan 0:b74591d5ab33 264 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 265 }
be_bryan 0:b74591d5ab33 266
be_bryan 0:b74591d5ab33 267 return _stack_api()->setsockopt(_stack(), socket, level, optname, optval, optlen);
be_bryan 0:b74591d5ab33 268 }
be_bryan 0:b74591d5ab33 269
be_bryan 0:b74591d5ab33 270 virtual nsapi_error_t getsockopt(nsapi_socket_t socket, int level, int optname, void *optval, unsigned *optlen)
be_bryan 0:b74591d5ab33 271 {
be_bryan 0:b74591d5ab33 272 if (!_stack_api()->getsockopt) {
be_bryan 0:b74591d5ab33 273 return NSAPI_ERROR_UNSUPPORTED;
be_bryan 0:b74591d5ab33 274 }
be_bryan 0:b74591d5ab33 275
be_bryan 0:b74591d5ab33 276 return _stack_api()->getsockopt(_stack(), socket, level, optname, optval, optlen);
be_bryan 0:b74591d5ab33 277 }
be_bryan 0:b74591d5ab33 278 };
be_bryan 0:b74591d5ab33 279
be_bryan 0:b74591d5ab33 280
be_bryan 0:b74591d5ab33 281 // Conversion function for network stacks
be_bryan 0:b74591d5ab33 282 NetworkStack *nsapi_create_stack(nsapi_stack_t *stack)
be_bryan 0:b74591d5ab33 283 {
be_bryan 0:b74591d5ab33 284 MBED_STATIC_ASSERT(sizeof stack->_stack_buffer >= sizeof(NetworkStackWrapper),
be_bryan 0:b74591d5ab33 285 "The nsapi_stack_t stack buffer must fit a NetworkStackWrapper");
be_bryan 0:b74591d5ab33 286 return new (stack->_stack_buffer) NetworkStackWrapper;
be_bryan 0:b74591d5ab33 287 }
be_bryan 0:b74591d5ab33 288
be_bryan 0:b74591d5ab33 289 NetworkStack *nsapi_create_stack(NetworkStack *stack)
be_bryan 0:b74591d5ab33 290 {
be_bryan 0:b74591d5ab33 291 return stack;
be_bryan 0:b74591d5ab33 292 }
be_bryan 0:b74591d5ab33 293