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#include "HTTPSClient.h"
#include "HTTPHeader.h"
#include <string>
#include <cstring>
#include "mbed.h"
#include <stdlib.h>
#include <stdio.h>
using std::memset;
using std::memcpy;
using std::string;
const static int HTTPS_PORT = 443;
char buf[256];
HTTPSClient::HTTPSClient() :
_is_connected(false),
_ssl_ctx(),
_ssl(),
_host() {
}
HTTPSClient::~HTTPSClient() {
close();
}
int HTTPSClient::connect(const char* host) {
if (init_socket(SOCK_STREAM) < 0)
return -1;
if (set_address(host, HTTPS_PORT) != 0)
return -1;
if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
close();
return -1;
}
if(ssl_ctx_new(&_ssl_ctx, SSL_SERVER_VERIFY_LATER, SSL_DEFAULT_CLNT_SESS) != &_ssl_ctx)
return -1;
_ssl.ssl_ctx = &_ssl_ctx;
if(ssl_client_new(&_ssl, _sock_fd, NULL, 0) == NULL)
{
close();
return -1;
}
if(_ssl.hs_status != SSL_OK)
{
close();
return -1;
}
_is_connected = true;
_host = host;
return 0;
}
bool HTTPSClient::is_connected(void) {
return _is_connected;
}
int HTTPSClient::send(char* data, int length) {
if ((_sock_fd < 0) || !_is_connected)
return -1;
return ssl_write(&_ssl, (uint8_t*)data, length);
}
HTTPHeader HTTPSClient::get(char *request)
{
if((_sock_fd < 0) || !_is_connected)
return HTTPHeader();
sprintf(buf, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", request, _host.c_str());
printf("buf=%s\n", buf);
if(send(buf, strlen(buf)) != strlen(buf))
return HTTPHeader();
printf("Finished sending request\n");
return read_header();
}
HTTPHeader HTTPSClient::read_header()
{
_ssl.bm_read_index = 0;
_ssl.bm_index = 0;
HTTPHeader hdr;
if(read_line())
return hdr;
int status;
if(sscanf(buf, "HTTP/%*d.%*d %d %*s", &status) == -1)
return hdr;
if(status == 200)
hdr._status = HTTP_OK;
if(read_line())
return hdr;
do
{
string tmp(buf);
std::size_t sep = tmp.find(':');
string name = tmp.substr(0, sep);
string value = tmp.substr(sep+2, tmp.size());
hdr._fields[name] = value;
if(read_line())
return hdr;
}while(strlen(buf));
return hdr;
}
uint8_t HTTPSClient::read_line()
{
int index = 0;
do
{
if(ssl_read(&_ssl, (uint8_t*)(&buf[index]), 1) != 1)
{
return 1;
}
index++;
}while(buf[index-1] != '\r' && index < 256);
ssl_read(&_ssl, (uint8_t*)(&buf[index-1]), 1); // skip '\n'
buf[index-1] = '\0';
return 0;
}
// -1:error
// otherwise return nb of characters read. Cannot be > than len
int HTTPSClient::read(char *data, int len)
{
return ssl_read(&_ssl, (uint8_t*)data, len);
}
/*
0 : must close connection
-1 : error
else : get data
int HTTPSClient::receive(char* data, int length) {
if ((_sock_fd < 0) || !_is_connected)
return -1;
if(read_record(&_ssl) < 0)
return -1;
return process_data(&_ssl, (uint8_t*)data, length);
}
*/
void HTTPSClient::close()
{
if(!_is_connected)
return;
ssl_ctx_free(_ssl.ssl_ctx);
Socket::close();
_is_connected = false;
_host.clear();
}
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