Martin Kojtal / cc3000_hostdriver_mbedsocket Featured

cc3000 hostdriver with the mbed socket interface

Dependents:   cc3000_hello_world_demo cc3000_simple_socket_demo cc3000_ntp_demo cc3000_ping_demo ... more

Socket/Endpoint.cpp@18:7e22775eadb9, 2013-10-02 (annotated)

Committer:
SolderSplashLabs
Date:
Wed Oct 02 21:57:28 2013 +0000
Revision:
18:7e22775eadb9
Parent:
17:14b6a3a2b622
Child:
34:1ad18123bf11
Websocket demo showed that if gethostbyname failed and returned 0.0.0.0 it still went ahead. Added checking to the gethostbyname call in Endpoint.cpp

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 17:14b6a3a2b622 1 /* Copyright (C) 2013 mbed.org, MIT License
Kojto 17:14b6a3a2b622 2 *
Kojto 17:14b6a3a2b622 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Kojto 17:14b6a3a2b622 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
Kojto 17:14b6a3a2b622 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
Kojto 17:14b6a3a2b622 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
Kojto 17:14b6a3a2b622 7 * furnished to do so, subject to the following conditions:
Kojto 17:14b6a3a2b622 8 *
Kojto 17:14b6a3a2b622 9 * The above copyright notice and this permission notice shall be included in all copies or
Kojto 17:14b6a3a2b622 10 * substantial portions of the Software.
Kojto 17:14b6a3a2b622 11 *
Kojto 17:14b6a3a2b622 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Kojto 17:14b6a3a2b622 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Kojto 17:14b6a3a2b622 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Kojto 17:14b6a3a2b622 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Kojto 17:14b6a3a2b622 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Kojto 17:14b6a3a2b622 17 */
Kojto 17:14b6a3a2b622 18 #include "Socket/Socket.h"
Kojto 17:14b6a3a2b622 19 #include "Socket/Endpoint.h"
Kojto 17:14b6a3a2b622 20 #include "Helper/def.h"
Kojto 17:14b6a3a2b622 21 #include <cstring>
Kojto 17:14b6a3a2b622 22
Kojto 17:14b6a3a2b622 23 #include "cc3000.h"
Kojto 17:14b6a3a2b622 24
Kojto 17:14b6a3a2b622 25 /* Copied from lwip */
Kojto 17:14b6a3a2b622 26 static char *inet_ntoa_r(const in_addr addr, char *buf, int buflen)
Kojto 17:14b6a3a2b622 27 {
Kojto 17:14b6a3a2b622 28 uint32_t s_addr;
Kojto 17:14b6a3a2b622 29 char inv[3];
Kojto 17:14b6a3a2b622 30 char *rp;
Kojto 17:14b6a3a2b622 31 uint8_t *ap;
Kojto 17:14b6a3a2b622 32 uint8_t rem;
Kojto 17:14b6a3a2b622 33 uint8_t n;
Kojto 17:14b6a3a2b622 34 uint8_t i;
Kojto 17:14b6a3a2b622 35 int len = 0;
Kojto 17:14b6a3a2b622 36
Kojto 17:14b6a3a2b622 37 s_addr = addr.s_addr;
Kojto 17:14b6a3a2b622 38
Kojto 17:14b6a3a2b622 39 rp = buf;
Kojto 17:14b6a3a2b622 40 ap = (uint8_t *)&s_addr;
Kojto 17:14b6a3a2b622 41 for(n = 0; n < 4; n++) {
Kojto 17:14b6a3a2b622 42 i = 0;
Kojto 17:14b6a3a2b622 43 do {
Kojto 17:14b6a3a2b622 44 rem = *ap % (uint8_t)10;
Kojto 17:14b6a3a2b622 45 *ap /= (uint8_t)10;
Kojto 17:14b6a3a2b622 46 inv[i++] = '0' + rem;
Kojto 17:14b6a3a2b622 47 } while(*ap);
Kojto 17:14b6a3a2b622 48 while(i--) {
Kojto 17:14b6a3a2b622 49 if (len++ >= buflen) {
Kojto 17:14b6a3a2b622 50 return NULL;
Kojto 17:14b6a3a2b622 51 }
Kojto 17:14b6a3a2b622 52 *rp++ = inv[i];
Kojto 17:14b6a3a2b622 53 }
Kojto 17:14b6a3a2b622 54 if (len++ >= buflen) {
Kojto 17:14b6a3a2b622 55 return NULL;
Kojto 17:14b6a3a2b622 56 }
Kojto 17:14b6a3a2b622 57 *rp++ = '.';
Kojto 17:14b6a3a2b622 58 ap++;
Kojto 17:14b6a3a2b622 59 }
Kojto 17:14b6a3a2b622 60 *--rp = 0;
Kojto 17:14b6a3a2b622 61 return buf;
Kojto 17:14b6a3a2b622 62 }
Kojto 17:14b6a3a2b622 63
Kojto 17:14b6a3a2b622 64 Endpoint::Endpoint() {
Kojto 17:14b6a3a2b622 65 _cc3000_module = cc3000::get_instance();
Kojto 17:14b6a3a2b622 66 if (_cc3000_module == NULL) {
Kojto 17:14b6a3a2b622 67 error("Endpoint constructor error: no cc3000 instance available!\r\n");
Kojto 17:14b6a3a2b622 68 }
Kojto 17:14b6a3a2b622 69 reset_address();
Kojto 17:14b6a3a2b622 70 }
Kojto 17:14b6a3a2b622 71 Endpoint::~Endpoint() {}
Kojto 17:14b6a3a2b622 72
Kojto 17:14b6a3a2b622 73 void Endpoint::reset_address(void) {
Kojto 17:14b6a3a2b622 74 _ipAddress[0] = '\0';
Kojto 17:14b6a3a2b622 75 std::memset(&_remote_host, 0, sizeof(sockaddr_in));
Kojto 17:14b6a3a2b622 76 }
Kojto 17:14b6a3a2b622 77
Kojto 17:14b6a3a2b622 78 int Endpoint::set_address(const char* host, const int port) {
Kojto 17:14b6a3a2b622 79 reset_address();
Kojto 17:14b6a3a2b622 80
SolderSplashLabs 18:7e22775eadb9 81 int resolveRetCode;
Kojto 17:14b6a3a2b622 82 char address[5];
Kojto 17:14b6a3a2b622 83 char *p_address = address;
Kojto 17:14b6a3a2b622 84
Kojto 17:14b6a3a2b622 85 signed int add[5];
Kojto 17:14b6a3a2b622 86
Kojto 17:14b6a3a2b622 87 // Dot-decimal notation
Kojto 17:14b6a3a2b622 88 int result = std::sscanf(host, "%3u.%3u.%3u.%3u", &add[0], &add[1], &add[2], &add[3]);
Kojto 17:14b6a3a2b622 89 for (int i=0;i<4;i++) {
Kojto 17:14b6a3a2b622 90 address[i] = add[i];
Kojto 17:14b6a3a2b622 91 }
Kojto 17:14b6a3a2b622 92 std::memset(_ipAddress,0,sizeof(_ipAddress));
Kojto 17:14b6a3a2b622 93
Kojto 17:14b6a3a2b622 94 if (result != 4) {
Kojto 17:14b6a3a2b622 95 //Resolve DNS address or populate hard-coded IP address
Kojto 17:14b6a3a2b622 96 uint32_t address_integer;
SolderSplashLabs 18:7e22775eadb9 97 resolveRetCode = _cc3000_module->_socket.gethostbyname((uint8_t *)host, strlen(host) , &address_integer);
SolderSplashLabs 18:7e22775eadb9 98
SolderSplashLabs 18:7e22775eadb9 99 if ((resolveRetCode > -1) && ( 0 != address_integer ))
SolderSplashLabs 18:7e22775eadb9 100 {
SolderSplashLabs 18:7e22775eadb9 101 // Resolved address
SolderSplashLabs 18:7e22775eadb9 102 uint32_t ip = 0;
SolderSplashLabs 18:7e22775eadb9 103 ip = (ip | (address_integer >> 24));
SolderSplashLabs 18:7e22775eadb9 104 ip = (ip | ((address_integer & 0x00FF0000) >> 8));
SolderSplashLabs 18:7e22775eadb9 105 ip = (ip | ((address_integer & 0x0000FF00) << 8));
SolderSplashLabs 18:7e22775eadb9 106 ip = (ip | ((address_integer & 0x000000FF) << 24));
SolderSplashLabs 18:7e22775eadb9 107 _remote_host.sin_addr.s_addr = ip;
SolderSplashLabs 18:7e22775eadb9 108 inet_ntoa_r(_remote_host.sin_addr, _ipAddress, sizeof(_ipAddress));
SolderSplashLabs 18:7e22775eadb9 109 }
SolderSplashLabs 18:7e22775eadb9 110 else
SolderSplashLabs 18:7e22775eadb9 111 {
SolderSplashLabs 18:7e22775eadb9 112 // Failed to resolve the address
SolderSplashLabs 18:7e22775eadb9 113 DBG_SOCKET("Failed to resolve the hostname : %s",host);
SolderSplashLabs 18:7e22775eadb9 114 return ( -1 );
SolderSplashLabs 18:7e22775eadb9 115 }
Kojto 17:14b6a3a2b622 116 } else {
Kojto 17:14b6a3a2b622 117 std::memcpy((char*)&_remote_host.sin_addr.s_addr, p_address, 4);
Kojto 17:14b6a3a2b622 118 }
Kojto 17:14b6a3a2b622 119
Kojto 17:14b6a3a2b622 120 _remote_host.sin_family = AF_INET;
Kojto 17:14b6a3a2b622 121 _remote_host.sin_port = htons(port);
Kojto 17:14b6a3a2b622 122
Kojto 17:14b6a3a2b622 123 DBG_SOCKET("remote host address (string): %s",get_address());
Kojto 17:14b6a3a2b622 124 DBG_SOCKET("remote host address from s_addr : %d.%d.%d.%d",
Kojto 17:14b6a3a2b622 125 int(_remote_host.sin_addr.s_addr & 0xFF),
Kojto 17:14b6a3a2b622 126 int((_remote_host.sin_addr.s_addr & 0xFF00) >> 8),
Kojto 17:14b6a3a2b622 127 int((_remote_host.sin_addr.s_addr & 0xFF0000) >> 16),
Kojto 17:14b6a3a2b622 128 int((_remote_host.sin_addr.s_addr & 0xFF000000) >> 24));
Kojto 17:14b6a3a2b622 129 DBG_SOCKET("port: %d", port);
Kojto 17:14b6a3a2b622 130
Kojto 17:14b6a3a2b622 131 return 0;
Kojto 17:14b6a3a2b622 132 }
Kojto 17:14b6a3a2b622 133
Kojto 17:14b6a3a2b622 134 char* Endpoint::get_address() {
Kojto 17:14b6a3a2b622 135 if ((_ipAddress[0] == '\0') && (_remote_host.sin_addr.s_addr != 0))
Kojto 17:14b6a3a2b622 136 inet_ntoa_r(_remote_host.sin_addr, _ipAddress, sizeof(_ipAddress));
Kojto 17:14b6a3a2b622 137 return _ipAddress;
Kojto 17:14b6a3a2b622 138 }
Kojto 17:14b6a3a2b622 139
Kojto 17:14b6a3a2b622 140
Kojto 17:14b6a3a2b622 141 int Endpoint::get_port() {
Kojto 17:14b6a3a2b622 142 return ntohs(_remote_host.sin_port);
Kojto 17:14b6a3a2b622 143 }