Francois Berder / HTTPSClient

wrapper of TLS library to connect to HTTPS servers

Dependents:   HTTPSClientExample

This library provides a simple interface to send GET requests over HTTPS. Notice that this library uses the axTLS library for the implementation of TLS.

Import programHTTPSClientExample

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Last commit 12 Sep 2013 by Francois Berder

HTTPSClient.cpp@0:ab9011f6ede5, 2013-09-04 (annotated)

Committer:
feb11
Date:
Wed Sep 04 13:24:29 2013 +0000
Revision:
0:ab9011f6ede5
Child:
1:95f92eed4e09
initial import

Who changed what in which revision?

UserRevisionLine numberNew contents of line
feb11 0:ab9011f6ede5 1 #include "HTTPSClient.h"
feb11 0:ab9011f6ede5 2 #include "HTTPHeader.h"
feb11 0:ab9011f6ede5 3 #include <stdio.h>
feb11 0:ab9011f6ede5 4 #include <string.h>
feb11 0:ab9011f6ede5 5
feb11 0:ab9011f6ede5 6 HTTPSClient::HTTPSClient():
feb11 0:ab9011f6ede5 7 _con()
feb11 0:ab9011f6ede5 8 {
feb11 0:ab9011f6ede5 9 }
feb11 0:ab9011f6ede5 10
feb11 0:ab9011f6ede5 11 bool HTTPSClient::connect(const std::string& host)
feb11 0:ab9011f6ede5 12 {
feb11 0:ab9011f6ede5 13 if(_con.is_connected())
feb11 0:ab9011f6ede5 14 return false;
feb11 0:ab9011f6ede5 15
feb11 0:ab9011f6ede5 16 return _con.connect(host.c_str()) == 0;
feb11 0:ab9011f6ede5 17 }
feb11 0:ab9011f6ede5 18
feb11 0:ab9011f6ede5 19 std::string HTTPSClient::readLine()
feb11 0:ab9011f6ede5 20 {
feb11 0:ab9011f6ede5 21 std::string line;
feb11 0:ab9011f6ede5 22 char c;
feb11 0:ab9011f6ede5 23 _con.receive_all(&c, 1);
feb11 0:ab9011f6ede5 24 while(c != '\r')
feb11 0:ab9011f6ede5 25 {
feb11 0:ab9011f6ede5 26 line += c;
feb11 0:ab9011f6ede5 27 _con.receive_all(&c, 1);
feb11 0:ab9011f6ede5 28 }
feb11 0:ab9011f6ede5 29 _con.receive_all(&c, 1); // skip \n
feb11 0:ab9011f6ede5 30 return line;
feb11 0:ab9011f6ede5 31 }
feb11 0:ab9011f6ede5 32
feb11 0:ab9011f6ede5 33 HTTPHeader HTTPSClient::readHeader()
feb11 0:ab9011f6ede5 34 {
feb11 0:ab9011f6ede5 35 HTTPHeader hdr;
feb11 0:ab9011f6ede5 36 std::string line = readLine();
feb11 0:ab9011f6ede5 37 sscanf(line.c_str(), "HTTP/1.1 %d OK", &hdr._status);
feb11 0:ab9011f6ede5 38 do
feb11 0:ab9011f6ede5 39 {
feb11 0:ab9011f6ede5 40 if(!line.compare(0,strlen("Content-Length"), "Content-Length"))
feb11 0:ab9011f6ede5 41 sscanf(line.c_str(), "Content-Length: %d", &hdr._bodyLength);
feb11 0:ab9011f6ede5 42 line = readLine();
feb11 0:ab9011f6ede5 43 }while(line.size());
feb11 0:ab9011f6ede5 44 return hdr;
feb11 0:ab9011f6ede5 45 }
feb11 0:ab9011f6ede5 46
feb11 0:ab9011f6ede5 47 int HTTPSClient::get(const std::string& path, HTTPHeader *hdr)
feb11 0:ab9011f6ede5 48 {
feb11 0:ab9011f6ede5 49 if(!_con.is_connected())
feb11 0:ab9011f6ede5 50 return -1;
feb11 0:ab9011f6ede5 51
feb11 0:ab9011f6ede5 52 const std::string &request = HTTPHeader::getRequest(path, _con.get_address(), 443);
feb11 0:ab9011f6ede5 53
feb11 0:ab9011f6ede5 54 if(_con.send_all((char*)request.c_str(), request.size()+1) != request.size()+1)
feb11 0:ab9011f6ede5 55 return -1;
feb11 0:ab9011f6ede5 56
feb11 0:ab9011f6ede5 57 *hdr = readHeader();
feb11 0:ab9011f6ede5 58 return hdr->_status == HTTP_OK ? 0 : -1;
feb11 0:ab9011f6ede5 59 }
feb11 0:ab9011f6ede5 60
feb11 0:ab9011f6ede5 61 int HTTPSClient::get(const std::string& path, HTTPHeader *hdr, char *data, int length)
feb11 0:ab9011f6ede5 62 {
feb11 0:ab9011f6ede5 63 if(!_con.is_connected())
feb11 0:ab9011f6ede5 64 return -1;
feb11 0:ab9011f6ede5 65
feb11 0:ab9011f6ede5 66 if(hdr != NULL)
feb11 0:ab9011f6ede5 67 {
feb11 0:ab9011f6ede5 68 const std::string &request = HTTPHeader::getRequest(path, _con.get_address(), 443);
feb11 0:ab9011f6ede5 69 if(_con.send_all((char*)request.c_str(), request.size()+1) != request.size()+1)
feb11 0:ab9011f6ede5 70 return -1;
feb11 0:ab9011f6ede5 71 *hdr = readHeader();
feb11 0:ab9011f6ede5 72 if(hdr->_status != HTTP_OK)
feb11 0:ab9011f6ede5 73 return -1;
feb11 0:ab9011f6ede5 74
feb11 0:ab9011f6ede5 75 if(hdr->_bodyLength > 0)
feb11 0:ab9011f6ede5 76 return _con.receive_all(data, hdr->_bodyLength > length ? length : hdr->_bodyLength);
feb11 0:ab9011f6ede5 77
feb11 0:ab9011f6ede5 78 return 0;
feb11 0:ab9011f6ede5 79 }
feb11 0:ab9011f6ede5 80 else
feb11 0:ab9011f6ede5 81 return _con.receive_all(data, length);
feb11 0:ab9011f6ede5 82 }
feb11 0:ab9011f6ede5 83
feb11 0:ab9011f6ede5 84 bool HTTPSClient::disconnect()
feb11 0:ab9011f6ede5 85 {
feb11 0:ab9011f6ede5 86 if(!_con.is_connected())
feb11 0:ab9011f6ede5 87 return true;
feb11 0:ab9011f6ede5 88
feb11 0:ab9011f6ede5 89 return _con.close() == 0;
feb11 0:ab9011f6ede5 90 }