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Add 'features/net/network-socket/' from commit 'e09565474188b905cada21166118a82e66359217'
git-subtree-dir: features/net/network-socket git-subtree-mainline: db60d6a git-subtree-split: e095654
2 parents db60d6a + e095654 commit 03c5855

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‎features/net/network-socket/CellularInterface.h

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/* CellularInterface
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* Copyright (c) 2015 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CELLULAR_INTERFACE_H
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#define CELLULAR_INTERFACE_H
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#include "network-socket/NetworkInterface.h"
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/** CellularInterface class
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*
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* Common interface that is shared between ethernet hardware
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*/
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class CellularInterface : public NetworkInterface
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{
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public:
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/** Start the interface
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*
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* @param apn Optional name of the network to connect to
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* @param username Optional username for your APN
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* @param password Optional password for your APN
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* @return 0 on success, negative error code on failure
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*/
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virtual int connect(const char *apn = 0, const char *username = 0, const char *password = 0) = 0;
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/** Stop the interface
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*
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* @return 0 on success, negative error code on failure
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*/
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virtual int disconnect() = 0;
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/** Get the local MAC address
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*
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* @return Null-terminated representation of the local MAC address
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*/
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virtual const char *get_mac_address() = 0;
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};
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#endif

‎features/net/network-socket/DnsQuery/DnsQuery.cpp

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/* Copyright (c) 2013 Henry Leinen (henry[dot]leinen [at] online [dot] de)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish, distribute,
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* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "DnsQuery.h"
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#include <stdio.h>
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#include <string.h>
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#define DNS_COUNT (sizeof DNS_IPS / sizeof DNS_IPS[0])
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const char *DNS_IPS[] = {
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"8.8.8.8",
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"209.244.0.3",
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"84.200.69.80",
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"8.26.56.26",
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"208.67.222.222"
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};
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static bool isIP(const char *host)
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{
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int i;
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for (i = 0; host[i]; i++) {
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if (!(host[i] >= '0' && host[i] <= '9') && host[i] != '.') {
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return false;
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}
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}
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// Ending with '.' garuntees host
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if (i > 0 && host[i-1] == '.') {
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return false;
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}
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return true;
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}
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static bool parseRR(uint8_t *resp, int &c, char *adr)
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{
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int n = 0;
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while((n=resp[c++]) != 0) {
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if ((n & 0xc0) != 0) {
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// This is a link
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c++;
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break;
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} else {
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// skip this segment, not interested in string domain names
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c+= n;
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}
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}
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int TYPE = (((int)resp[c])<<8) + resp[c+1];
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int CLASS = (((int)resp[c+2])<<8) + resp[c+3];
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int RDLENGTH = (((int)resp[c+8])<<8) + resp[c+9];
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c+= 10;
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if ((CLASS == 1) && (TYPE == 1)) {
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sprintf(adr,"%d.%d.%d.%d", resp[c], resp[c+1], resp[c+2], resp[c+3]);
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c+= RDLENGTH;
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return true;
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}
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c+= RDLENGTH;
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return false;
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}
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static bool resolve(unsigned char *resp, char *ipaddress)
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{
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int ID = (((int)resp[0]) <<8) + resp[1];
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int QR = resp[2] >>7;
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int Opcode = (resp[2]>>3) & 0x0F;
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int RCODE = (resp[3] & 0x0F);
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int ANCOUNT = (((int)resp[6])<<8)+ resp[7];
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if ((ID != 1) || (QR != 1) || (Opcode != 0) || (RCODE != 0)) {
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return false;
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}
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int c = 12;
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int d;
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// Skip domain question
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while( (d=resp[c++]) != 0) {
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c+=d;
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}
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c+= 4; // skip QTYPE and QCLASS
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// Here comes the resource record
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for (int ans = 0 ; ans < ANCOUNT; ans++) {
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if (parseRR(resp, c, ipaddress)) {
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return true;
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}
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}
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return false;
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}
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static int32_t query(UDPSocket *socket, const SocketAddress &addr, const char *hostname, char *ipaddress)
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{
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int len = 0;
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if (hostname == NULL) {
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return false;
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}
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len = strlen(hostname);
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if ((len > 128) || (len == 0)) {
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return false;
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}
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int packetlen = /* size of HEADER structure */ 12 + /* size of QUESTION Structure */5 + len + 1;
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uint8_t *packet = new uint8_t[packetlen]; /* this is the UDP packet to send to the DNS */
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if (packet == NULL) {
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return false;
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}
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// Fill the header
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memset(packet, 0, packetlen);
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packet[1] = 1; // ID = 1
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packet[5] = 1; // QDCOUNT = 1 (contains one question)
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packet[2] = 1; // recursion requested
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int c = 13; // point to NAME element in question section or request
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int cnt = 12; // points to the counter of
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packet[cnt] = 0;
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for (int i = 0 ; i < len ; i++) {
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if (hostname[i] != '.') {
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// Copy the character and increment the character counter
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packet[cnt]++;
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packet[c++] = hostname[i];
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} else {
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// Finished with this part, so go to the next
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cnt = c++;
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packet[cnt] = 0;
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}
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}
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// Terminate this domain name with a zero entry
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packet[c++] = 0;
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// Set QTYPE
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packet[c++] = 0;
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packet[c++] = 1;
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// Set QCLASS
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packet[c++] = 0;
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packet[c++] = 1;
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if (socket->sendto(addr, packet, packetlen) < 0) {
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delete packet;
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return false;
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}
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delete packet;
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packet = new uint8_t [1024];
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// Receive the answer from DNS
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int response_length = 0;
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response_length = socket->recvfrom(NULL, packet, 1024);
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if (response_length > 0 ) {
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if (!resolve(packet, ipaddress)) {
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delete packet;
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return NSAPI_ERROR_DNS_FAILURE;
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}
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// cleanup and return
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delete packet;
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return 0;
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}
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delete packet;
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return NSAPI_ERROR_DNS_FAILURE;
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}
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int32_t dnsQuery(NetworkStack *iface, const char *host, char *ip)
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{
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if (isIP(host)) {
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strcpy(ip, host);
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return 0;
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}
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UDPSocket sock(iface);
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for (unsigned i = 0; i < DNS_COUNT; i++) {
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return query(&sock, SocketAddress(DNS_IPS[0], 53), host, ip);
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}
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return NSAPI_ERROR_DNS_FAILURE;
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}
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int32_t dnsQuery(UDPSocket *socket, const char *host, char *ip)
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{
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if (isIP(host)) {
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strcpy(ip, host);
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return 0;
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}
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for (unsigned i = 0; i < DNS_COUNT; i++) {
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return query(socket, SocketAddress(DNS_IPS[0], 53), host, ip);
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}
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return NSAPI_ERROR_DNS_FAILURE;
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}

‎features/net/network-socket/DnsQuery/DnsQuery.h

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/*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish, distribute,
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* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __DNSQUERY_H__
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#define __DNSQUERY_H__
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#include "NetworkStack.h"
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#include "UDPSocket.h"
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/** Function dnsQuery implements the functionality to query a domain name
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* server for an IP-Address of a given hostname.
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* @param iface : Network interface to use for DNS resolution.
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* @param sock : Previously opened socket to use for DNS resolution.
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* @param hostname : The hostname of interest as a string.
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* Format must be without http:// or www. IE google.com, mbed.org, etc.
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* If a standard IP Address is passed, it will be copied into ip unmodified.
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* @param ipaddress : A reference to a IPADDRESS_t object which will receive
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* the resolved IP Address of the host in question.
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* @returns 0 on succes, NS_DNS_FAILURE if host is not found,
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* or a negative value for other errors.
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*/
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int32_t dnsQuery(NetworkStack *iface, const char *host, char *ip);
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int32_t dnsQuery(UDPSocket *sock, const char *host, char *ip);
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#endif // __DNSQUERY_H__

‎features/net/network-socket/EthInterface.h

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/* EthInterface
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* Copyright (c) 2015 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ETH_INTERFACE_H
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#define ETH_INTERFACE_H
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#include "network-socket/NetworkInterface.h"
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/** EthInterface class
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*
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* Common interface that is shared between ethernet hardware.
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*/
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class EthInterface : public NetworkInterface
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{
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public:
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/** Start the interface
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*
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* @return 0 on success, negative error code on failure
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*/
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virtual int connect() = 0;
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/** Stop the interface
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*
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* @return 0 on success, negative error code on failure
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*/
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virtual int disconnect() = 0;
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/** Get the local MAC address
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*
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* @return Null-terminated representation of the local MAC address
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*/
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virtual const char *get_mac_address() = 0;
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};
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#endif

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