Add WebServer, WebServerSecure, HTTPUpdateServer, HTTPUpdateServerSecure (#791)

* Add HTTP-parser lib to support ESP32 WebServer
* Add WebServer from ESP32.  Only supports HTTP
* Separate HTTP server from the network server
Instead of managing the WiFiServer/WiFiServerSecure in the same object
as the HTTP handling, split them into separate objects.  This lets
HTTP and HTTPS servers work without templates or duplicating code.
The HTTP block just gets a `WiFiClient*` and works with that to only
do HTTP processing, while the upper object handles the appropriate
server and client types.
* Add HTTPS server
* Clean up some THandlerFunction refs
* Refactor into a template-ized WebServer/WebServerSecure
* Add DNSServer examples which need WebServer
* Fix CoreMutex infinite recursion crash
Core could crash while Serial debugging was going on and prints were
happening from LWIP/IRQ land and the main app.
* Add HTTPUpdateServer(Secure)
* Add MIME include, optimize WebServer::send(size,len)
When send()ing a large buffer, the WebServer::send() call would
actually convert that buffer into a String (i.e. duplicate it, and
potential issues with embedded \0s in binary data).
Make a simple override to send(size, len) to allow writing from the
source buffer instead.
* Fix WiFiClient::send(Stream), add FSBrowser example

Author: earlephilhower

.github/workflows/pull-request.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Run codespell
       uses: codespell-project/actions-codespell@master
       with:
-        skip: ./ArduinoCore-API,./libraries/ESP8266SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api,./libraries/FreeRTOS,./tools/libbearssl/bearssl,./include,./libraries/WiFi/examples/BearSSL_Server,./ota/uzlib
+        skip: ./ArduinoCore-API,./libraries/ESP8266SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api,./libraries/FreeRTOS,./tools/libbearssl/bearssl,./include,./libraries/WiFi/examples/BearSSL_Server,./ota/uzlib,./libraries/http-parser/lib,./libraries/WebServer/examples/HelloServerBearSSL/HelloServerBearSSL.ino,./libraries/HTTPUpdateServer/examples/SecureBearSSLUpdater/SecureBearSSLUpdater.ino
         ignore_words_list: ser,dout
 
 # Consistent style

.gitignore

@@ -3,4 +3,5 @@ system
 tools/dist
 docs/_build
 ota/build
-tools/libpico/build
+tools/libpico/build
+platform.local.txt

.gitmodules

@@ -34,3 +34,6 @@
 [submodule "ota/uzlib"]
 	path = ota/uzlib
 	url = https://github.com/pfalcon/uzlib.git
+[submodule "libraries/http_parser/lib/http-parser"]
+	path = libraries/http-parser/lib/http-parser
+	url = https://github.com/nodejs/http-parser.git

README.md

@@ -147,6 +147,8 @@ The installed tools include a version of OpenOCD (in the pqt-openocd directory)
 * Adafruit TinyUSB Arduino (USB mouse, keyboard, flash drive, generic HID, CDC Serial, MIDI, WebUSB, others)
 * Generic Arduino USB Serial, Keyboard, and Mouse emulation
 * WiFi (Pico W)
+* HTTP client and server (WebServer)
+* SSL/TLS/HTTPS
 * Over-the-Air (OTA) upgrades
 * Filesystems (LittleFS and SD/SDFS)
 * Multicore support (setup1() and loop1())
@@ -187,7 +189,10 @@ If you want to contribute or have bugfixes, drop me a note at <earlephilhower@ya
 * [lwIP](https://savannah.nongnu.org/projects/lwip/) is (c) the Swedish Institute of Computer Science and licenced under the BSD license.
 * [BearSSL](https://bearssl.org) library written by Thomas Pornin, is distributed under the [MIT License](https://bearssl.org/#legal-details).
 * [UZLib](https://github.com/pfalcon/uzlib) is copyright (c) 2003 Joergen Ibsen and distributed under the zlib license.
-* [LEAmDMS](https://github.com/LaborEtArs/ESP8266mDNS) is copyright multiple authors and distributed under the MIT license.
+* [LEAmDNS](https://github.com/LaborEtArs/ESP8266mDNS) is copyright multiple authors and distributed under the MIT license.
+* [http-parser](https://github.com/nodejs/http-parser) is copyright Joyent, Inc. and other Node contributors.
+* WebServer code modified from the [ESP32 WebServer](https://github.com/espressif/arduino-esp32/tree/master/libraries/WebServer) and is copyright (c) 2015 Ivan Grokhotkov and others
+
 
 -Earle F. Philhower, III  
  earlephilhower@yahoo.com

cores/rp2040/Arduino.h

@@ -90,6 +90,15 @@ extern bool __isFreeRTOS;
 #define HAVE_HWSERIAL1
 #define HAVE_HWSERIAL2
 
+// PSTR/etc.
+#ifndef FPSTR
+#define FPSTR (const char *)
+#endif
+
+#ifndef PGM_VOID_P
+#define PGM_VOID_P void *
+#endif
+
 #ifdef __cplusplus
 
 #ifdef USE_TINYUSB

cores/rp2040/CoreMutex.h

@@ -27,13 +27,15 @@
 
 class CoreMutex {
 public:
-    CoreMutex(mutex_t *mutex) {
+    CoreMutex(mutex_t *mutex, bool debugEnable = true) {
         uint32_t owner;
         _mutex = mutex;
         _acquired = false;
         if (!mutex_try_enter(_mutex, &owner)) {
             if (owner == get_core_num()) { // Deadlock!
-                DEBUGCORE("CoreMutex - Deadlock detected!\n");
+                if (debugEnable) {
+                    DEBUGCORE("CoreMutex - Deadlock detected!\n");
+                }
                 return;
             }
             mutex_enter_blocking(_mutex);

cores/rp2040/SerialUSB.cpp

@@ -64,7 +64,7 @@ void SerialUSB::end() {
 }
 
 int SerialUSB::peek() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return 0;
     }
@@ -74,7 +74,7 @@ int SerialUSB::peek() {
 }
 
 int SerialUSB::read() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return -1;
     }
@@ -86,7 +86,7 @@ int SerialUSB::read() {
 }
 
 int SerialUSB::available() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return 0;
     }
@@ -95,7 +95,7 @@ int SerialUSB::available() {
 }
 
 int SerialUSB::availableForWrite() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return 0;
     }
@@ -104,7 +104,7 @@ int SerialUSB::availableForWrite() {
 }
 
 void SerialUSB::flush() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return;
     }
@@ -117,7 +117,7 @@ size_t SerialUSB::write(uint8_t c) {
 }
 
 size_t SerialUSB::write(const uint8_t *buf, size_t length) {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return 0;
     }
@@ -155,7 +155,7 @@ size_t SerialUSB::write(const uint8_t *buf, size_t length) {
 }
 
 SerialUSB::operator bool() {
-    CoreMutex m(&__usb_mutex);
+    CoreMutex m(&__usb_mutex, false);
     if (!_running || !m) {
         return false;
     }