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esp8266/libraries/ESP8266WebServer/src/ESP8266WebServerSecure.cpp
Earle F. Philhower, III bd1c7ce1dc Add SSL enabled WiFiServer, Updater, WebServer
Adds SSL server mode for WiFiServerSecure, for plain SSL connections,
ESP8266WebServerSecure, for HTTPS web serving, and SecureHTTPSUpdater for
encrypted OTA updates.

Example code is provided for all new options, as well as a BASH script for
generating their own, self-signed certificates.

Both ESP8266WebServerSecure and SecureHTTPSUpdater are important for secure
password-based authentication.  HTTP Basic Authentication, the only supported
model presently, sends the username and password in *cleartext* and therefore
should *never* be used in any un-SSL encrypted channel unless you don't mind
sharing your login and password with anyone else on the internet.  Even if the
ESP8266 is not safety critical, this cleartext broadcast could expose you should
you reuse this password elsewhere on your network or the internet.
2018-01-10 11:56:32 +08:00

141 lines
4.2 KiB
C++

/*
ESP8266WebServerSecure.cpp - Dead simple HTTPS web-server.
Supports only one simultaneous client, knows how to handle GET and POST.
Copyright (c) 2017 Earle F. Philhower, III. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Modified 8 May 2015 by Hristo Gochkov (proper post and file upload handling)
*/
#include <Arduino.h>
#include <libb64/cencode.h>
#include "WiFiServer.h"
#include "WiFiClient.h"
#include "ESP8266WebServerSecure.h"
ESP8266WebServerSecure::ESP8266WebServerSecure(IPAddress addr, int port)
: _serverSecure(addr, port)
{
}
ESP8266WebServerSecure::ESP8266WebServerSecure(int port)
: _serverSecure(port)
{
}
void ESP8266WebServerSecure::setServerKeyAndCert_P(const uint8_t *key, int keyLen, const uint8_t *cert, int certLen)
{
_serverSecure.setServerKeyAndCert_P(key, keyLen, cert, certLen);
}
void ESP8266WebServerSecure::setServerKeyAndCert(const uint8_t *key, int keyLen, const uint8_t *cert, int certLen)
{
_serverSecure.setServerKeyAndCert(key, keyLen, cert, certLen);
}
ESP8266WebServerSecure::~ESP8266WebServerSecure() {
// Nothing to do here.
// Base class's destructor will be called to clean up itself
}
// We need to basically cut-n-paste these from WebServer because of the problem
// of object slicing. The class uses assignment operators like "WiFiClient x=y;"
// When this happens, even if "y" is a WiFiClientSecure, the main class is
// already compiled down into code which will only copy the WiFiClient superclass
// and not the extra bits for our own class (since when it was compiled it needed
// to know the size of memory to allocate on the stack for this local variable
// there's not realy anything else it could do).
void ESP8266WebServerSecure::begin() {
_currentStatus = HC_NONE;
_serverSecure.begin();
if(!_headerKeysCount)
collectHeaders(0, 0);
}
void ESP8266WebServerSecure::handleClient() {
if (_currentStatus == HC_NONE) {
WiFiClientSecure client = _serverSecure.available();
if (!client) {
return;
}
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.println("New secure client");
#endif
_currentClientSecure = client;
_currentStatus = HC_WAIT_READ;
_statusChange = millis();
}
bool keepCurrentClient = false;
bool callYield = false;
if (_currentClientSecure.connected()) {
switch (_currentStatus) {
case HC_NONE:
// No-op to avoid C++ compiler warning
break;
case HC_WAIT_READ:
// Wait for data from client to become available
if (_currentClientSecure.available()) {
if (_parseRequest(_currentClientSecure)) {
_currentClientSecure.setTimeout(HTTP_MAX_SEND_WAIT);
_contentLength = CONTENT_LENGTH_NOT_SET;
_handleRequest();
if (_currentClientSecure.connected()) {
_currentStatus = HC_WAIT_CLOSE;
_statusChange = millis();
keepCurrentClient = true;
}
}
} else { // !_currentClient.available()
if (millis() - _statusChange <= HTTP_MAX_DATA_WAIT) {
keepCurrentClient = true;
}
callYield = true;
}
break;
case HC_WAIT_CLOSE:
// Wait for client to close the connection
if (millis() - _statusChange <= HTTP_MAX_CLOSE_WAIT) {
keepCurrentClient = true;
callYield = true;
}
}
}
if (!keepCurrentClient) {
_currentClientSecure = WiFiClientSecure();
_currentStatus = HC_NONE;
_currentUpload.reset();
}
if (callYield) {
yield();
}
}
void ESP8266WebServerSecure::close() {
_currentClientSecure.stop();
_serverSecure.close();
}