joey shelton / LED_Demo2

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Dependencies:   MAX44000 PWM_Tone_Library nexpaq_mdk

Fork of LED_Demo by joey shelton

mbd_os/libraries/net/https/HTTPSClient.cpp@9:6bb35cef007d, 2016-10-22 (annotated)

Committer:
cyberjoey
Date:
Sat Oct 22 01:31:58 2016 +0000
Revision:
9:6bb35cef007d
Parent:
1:55a6170b404f 
WORKING

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 1:55a6170b404f 1 #include "HTTPSClient.h"
nexpaq 1:55a6170b404f 2 #include "HTTPHeader.h"
nexpaq 1:55a6170b404f 3 #include <string>
nexpaq 1:55a6170b404f 4 #include <cstring>
nexpaq 1:55a6170b404f 5 #include "mbed.h"
nexpaq 1:55a6170b404f 6 #include <stdlib.h>
nexpaq 1:55a6170b404f 7 #include <stdio.h>
nexpaq 1:55a6170b404f 8
nexpaq 1:55a6170b404f 9 using std::memset;
nexpaq 1:55a6170b404f 10 using std::memcpy;
nexpaq 1:55a6170b404f 11 using std::string;
nexpaq 1:55a6170b404f 12
nexpaq 1:55a6170b404f 13 const static int HTTPS_PORT = 443;
nexpaq 1:55a6170b404f 14 char buf[256];
nexpaq 1:55a6170b404f 15
nexpaq 1:55a6170b404f 16 HTTPSClient::HTTPSClient() :
nexpaq 1:55a6170b404f 17 _is_connected(false),
nexpaq 1:55a6170b404f 18 _ssl_ctx(),
nexpaq 1:55a6170b404f 19 _ssl(),
nexpaq 1:55a6170b404f 20 _host() {
nexpaq 1:55a6170b404f 21 }
nexpaq 1:55a6170b404f 22
nexpaq 1:55a6170b404f 23 HTTPSClient::~HTTPSClient() {
nexpaq 1:55a6170b404f 24 close();
nexpaq 1:55a6170b404f 25 }
nexpaq 1:55a6170b404f 26
nexpaq 1:55a6170b404f 27 int HTTPSClient::connect(const char* host) {
nexpaq 1:55a6170b404f 28 if (init_socket(SOCK_STREAM) < 0)
nexpaq 1:55a6170b404f 29 return -1;
nexpaq 1:55a6170b404f 30
nexpaq 1:55a6170b404f 31 if (set_address(host, HTTPS_PORT) != 0)
nexpaq 1:55a6170b404f 32 return -1;
nexpaq 1:55a6170b404f 33
nexpaq 1:55a6170b404f 34 if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
nexpaq 1:55a6170b404f 35 close();
nexpaq 1:55a6170b404f 36 return -1;
nexpaq 1:55a6170b404f 37 }
nexpaq 1:55a6170b404f 38
nexpaq 1:55a6170b404f 39 if(ssl_ctx_new(&_ssl_ctx, SSL_SERVER_VERIFY_LATER, SSL_DEFAULT_CLNT_SESS) != &_ssl_ctx)
nexpaq 1:55a6170b404f 40 return -1;
nexpaq 1:55a6170b404f 41
nexpaq 1:55a6170b404f 42 _ssl.ssl_ctx = &_ssl_ctx;
nexpaq 1:55a6170b404f 43
nexpaq 1:55a6170b404f 44 if(ssl_client_new(&_ssl, _sock_fd, NULL, 0) == NULL)
nexpaq 1:55a6170b404f 45 {
nexpaq 1:55a6170b404f 46 close();
nexpaq 1:55a6170b404f 47 return -1;
nexpaq 1:55a6170b404f 48 }
nexpaq 1:55a6170b404f 49 if(_ssl.hs_status != SSL_OK)
nexpaq 1:55a6170b404f 50 {
nexpaq 1:55a6170b404f 51 close();
nexpaq 1:55a6170b404f 52 return -1;
nexpaq 1:55a6170b404f 53 }
nexpaq 1:55a6170b404f 54
nexpaq 1:55a6170b404f 55 _is_connected = true;
nexpaq 1:55a6170b404f 56 _host = host;
nexpaq 1:55a6170b404f 57 return 0;
nexpaq 1:55a6170b404f 58 }
nexpaq 1:55a6170b404f 59
nexpaq 1:55a6170b404f 60 bool HTTPSClient::is_connected(void) {
nexpaq 1:55a6170b404f 61 return _is_connected;
nexpaq 1:55a6170b404f 62 }
nexpaq 1:55a6170b404f 63
nexpaq 1:55a6170b404f 64 int HTTPSClient::send(char* data, int length) {
nexpaq 1:55a6170b404f 65 if ((_sock_fd < 0) || !_is_connected)
nexpaq 1:55a6170b404f 66 return -1;
nexpaq 1:55a6170b404f 67
nexpaq 1:55a6170b404f 68 return ssl_write(&_ssl, (uint8_t*)data, length);
nexpaq 1:55a6170b404f 69 }
nexpaq 1:55a6170b404f 70
nexpaq 1:55a6170b404f 71
nexpaq 1:55a6170b404f 72
nexpaq 1:55a6170b404f 73 HTTPHeader HTTPSClient::get(char *request)
nexpaq 1:55a6170b404f 74 {
nexpaq 1:55a6170b404f 75 if((_sock_fd < 0) || !_is_connected)
nexpaq 1:55a6170b404f 76 return HTTPHeader();
nexpaq 1:55a6170b404f 77
nexpaq 1:55a6170b404f 78 sprintf(buf, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", request, _host.c_str());
nexpaq 1:55a6170b404f 79 printf("buf=%s\n", buf);
nexpaq 1:55a6170b404f 80 if(send(buf, strlen(buf)) != strlen(buf))
nexpaq 1:55a6170b404f 81 return HTTPHeader();
nexpaq 1:55a6170b404f 82 printf("Finished sending request\n");
nexpaq 1:55a6170b404f 83 return read_header();
nexpaq 1:55a6170b404f 84 }
nexpaq 1:55a6170b404f 85
nexpaq 1:55a6170b404f 86
nexpaq 1:55a6170b404f 87 HTTPHeader HTTPSClient::read_header()
nexpaq 1:55a6170b404f 88 {
nexpaq 1:55a6170b404f 89 _ssl.bm_read_index = 0;
nexpaq 1:55a6170b404f 90 _ssl.bm_index = 0;
nexpaq 1:55a6170b404f 91 HTTPHeader hdr;
nexpaq 1:55a6170b404f 92 if(read_line())
nexpaq 1:55a6170b404f 93 return hdr;
nexpaq 1:55a6170b404f 94
nexpaq 1:55a6170b404f 95 int status;
nexpaq 1:55a6170b404f 96
nexpaq 1:55a6170b404f 97 if(sscanf(buf, "HTTP/%*d.%*d %d %*s", &status) == -1)
nexpaq 1:55a6170b404f 98 return hdr;
nexpaq 1:55a6170b404f 99
nexpaq 1:55a6170b404f 100 if(status == 200)
nexpaq 1:55a6170b404f 101 hdr._status = HTTP_OK;
nexpaq 1:55a6170b404f 102 if(read_line())
nexpaq 1:55a6170b404f 103 return hdr;
nexpaq 1:55a6170b404f 104 do
nexpaq 1:55a6170b404f 105 {
nexpaq 1:55a6170b404f 106 string tmp(buf);
nexpaq 1:55a6170b404f 107 std::size_t sep = tmp.find(':');
nexpaq 1:55a6170b404f 108 string name = tmp.substr(0, sep);
nexpaq 1:55a6170b404f 109 string value = tmp.substr(sep+2, tmp.size());
nexpaq 1:55a6170b404f 110 hdr._fields[name] = value;
nexpaq 1:55a6170b404f 111 if(read_line())
nexpaq 1:55a6170b404f 112 return hdr;
nexpaq 1:55a6170b404f 113 }while(strlen(buf));
nexpaq 1:55a6170b404f 114
nexpaq 1:55a6170b404f 115 return hdr;
nexpaq 1:55a6170b404f 116 }
nexpaq 1:55a6170b404f 117
nexpaq 1:55a6170b404f 118 uint8_t HTTPSClient::read_line()
nexpaq 1:55a6170b404f 119 {
nexpaq 1:55a6170b404f 120 int index = 0;
nexpaq 1:55a6170b404f 121 do
nexpaq 1:55a6170b404f 122 {
nexpaq 1:55a6170b404f 123 if(ssl_read(&_ssl, (uint8_t*)(&buf[index]), 1) != 1)
nexpaq 1:55a6170b404f 124 {
nexpaq 1:55a6170b404f 125 return 1;
nexpaq 1:55a6170b404f 126 }
nexpaq 1:55a6170b404f 127 index++;
nexpaq 1:55a6170b404f 128 }while(buf[index-1] != '\r' && index < 256);
nexpaq 1:55a6170b404f 129 ssl_read(&_ssl, (uint8_t*)(&buf[index-1]), 1); // skip '\n'
nexpaq 1:55a6170b404f 130 buf[index-1] = '\0';
nexpaq 1:55a6170b404f 131
nexpaq 1:55a6170b404f 132 return 0;
nexpaq 1:55a6170b404f 133 }
nexpaq 1:55a6170b404f 134
nexpaq 1:55a6170b404f 135 // -1:error
nexpaq 1:55a6170b404f 136 // otherwise return nb of characters read. Cannot be > than len
nexpaq 1:55a6170b404f 137 int HTTPSClient::read(char *data, int len)
nexpaq 1:55a6170b404f 138 {
nexpaq 1:55a6170b404f 139 return ssl_read(&_ssl, (uint8_t*)data, len);
nexpaq 1:55a6170b404f 140 }
nexpaq 1:55a6170b404f 141 /*
nexpaq 1:55a6170b404f 142 0 : must close connection
nexpaq 1:55a6170b404f 143 -1 : error
nexpaq 1:55a6170b404f 144 else : get data
nexpaq 1:55a6170b404f 145
nexpaq 1:55a6170b404f 146 int HTTPSClient::receive(char* data, int length) {
nexpaq 1:55a6170b404f 147 if ((_sock_fd < 0) || !_is_connected)
nexpaq 1:55a6170b404f 148 return -1;
nexpaq 1:55a6170b404f 149
nexpaq 1:55a6170b404f 150 if(read_record(&_ssl) < 0)
nexpaq 1:55a6170b404f 151 return -1;
nexpaq 1:55a6170b404f 152 return process_data(&_ssl, (uint8_t*)data, length);
nexpaq 1:55a6170b404f 153 }
nexpaq 1:55a6170b404f 154 */
nexpaq 1:55a6170b404f 155 void HTTPSClient::close()
nexpaq 1:55a6170b404f 156 {
nexpaq 1:55a6170b404f 157 if(!_is_connected)
nexpaq 1:55a6170b404f 158 return;
nexpaq 1:55a6170b404f 159 ssl_ctx_free(_ssl.ssl_ctx);
nexpaq 1:55a6170b404f 160 Socket::close();
nexpaq 1:55a6170b404f 161 _is_connected = false;
nexpaq 1:55a6170b404f 162 _host.clear();
nexpaq 1:55a6170b404f 163 }