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HTTPSServer2.cpp
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HTTPSServer2.cpp
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/*
from httpsserver lib(modified) to add checkAvail
*/
#include "HTTPSServer2.hpp"
namespace httpsserver {
HTTPSServer2::HTTPSServer2(SSLCert * cert, const uint16_t port, const uint8_t maxConnections, const in_addr_t bindAddress):
HTTPServer(port, maxConnections, bindAddress),
_cert(cert) {
// Configure runtime data
_sslctx = NULL;
}
HTTPSServer2::~HTTPSServer2() {
}
/**
This method starts the server and begins to listen on the port
*/
uint8_t HTTPSServer2::setupSocket() {
if (!isRunning()) {
if (!setupSSLCTX()) {
Serial.println("setupSSLCTX failed");
return 0;
}
if (!setupCert()) {
Serial.println("setupCert failed");
SSL_CTX_free(_sslctx);
_sslctx = NULL;
return 0;
}
if (HTTPServer::setupSocket()) {
return 1;
} else {
Serial.println("setupSockets failed");
SSL_CTX_free(_sslctx);
_sslctx = NULL;
return 0;
}
} else {
return 1;
}
}
void HTTPSServer2::teardownSocket() {
HTTPServer::teardownSocket();
// Tear down the SSL context
SSL_CTX_free(_sslctx);
_sslctx = NULL;
}
int HTTPSServer2::createConnection(int idx) {
HTTPSConnection * newConnection = new HTTPSConnection(this);
_connections[idx] = newConnection;
return newConnection->initialize(_socket, _sslctx, &_defaultHeaders);
}
/**
This method configures the ssl context that is used for the server
*/
uint8_t HTTPSServer2::setupSSLCTX() {
_sslctx = SSL_CTX_new(TLSv1_2_server_method());
if (_sslctx) {
// Set SSL Timeout to 5 minutes
SSL_CTX_set_timeout(_sslctx, 300);
return 1;
} else {
_sslctx = NULL;
return 0;
}
}
/**
This method configures the certificate and private key for the given
ssl context
*/
uint8_t HTTPSServer2::setupCert() {
// Configure the certificate first
uint8_t ret = SSL_CTX_use_certificate_ASN1(
_sslctx,
_cert->getCertLength(),
_cert->getCertData()
);
// Then set the private key accordingly
if (ret) {
ret = SSL_CTX_use_RSAPrivateKey_ASN1(
_sslctx,
_cert->getPKData(),
_cert->getPKLength()
);
}
return ret;
}
HTTPConnection *HTTPSServer2::checkAvail() {
// Only handle requests if the server is still running
if (!_running) return 0;
// Step 1: Process existing connections
// Process open connections and store the index of a free connection
// (we might use that later on)
int freeConnectionIdx = -1;
for (int i = 0; i < _maxConnections; i++) {
// Fetch a free index in the pointer array
if (_connections[i] == NULL) {
freeConnectionIdx = i;
} else {
// if there is a connection (_connections[i]!=NULL), check if its open or closed:
if (_connections[i]->isClosed()) {
// if it's closed, clean up:
delete _connections[i];
_connections[i] = NULL;
freeConnectionIdx = i;
} else {
// if not, process it:
//_connections[i]->loop();
}
}
}
// Step 2: Check for new connections
// This makes only sense if there is space to store the connection
if (freeConnectionIdx > -1) {
// We create a file descriptor set to be able to use the select function
fd_set sockfds;
// Out socket is the only socket in this set
FD_ZERO(&sockfds);
FD_SET(_socket, &sockfds);
// We define a "immediate" timeout
timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 0; // Return immediately, if possible
// Wait for input
// As by 2017-12-14, it seems that FD_SETSIZE is defined as 0x40, but socket IDs now
// start at 0x1000, so we need to use _socket+1 here
select(_socket + 1, &sockfds, NULL, NULL, &timeout);
// There is input
if (FD_ISSET(_socket, &sockfds)) {
int socketIdentifier = createConnection(freeConnectionIdx);
//HTTPS_LOGI("Loop. New connection. Socket FID=%d", socketIdentifier);
// If initializing did not work, discard the new socket immediately
if (socketIdentifier < 0) {
delete _connections[freeConnectionIdx];
_connections[freeConnectionIdx] = NULL;
}
else
{
//HTTPS_LOGI("Avail. return=%d", 1);
return _connections[freeConnectionIdx];
}
}
}
return nullptr;
}
} /* namespace HTTPSServer2 */