2022-06-06 19:54:02 -04:00
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include "shared-bindings/wifi/Radio.h"
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#include "supervisor/shared/translate/translate.h"
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#include "supervisor/shared/web_workflow/web_workflow.h"
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2022-06-14 20:02:34 -04:00
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#include "shared-bindings/socketpool/__init__.h"
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#include "shared-bindings/socketpool/Socket.h"
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#include "shared-bindings/socketpool/SocketPool.h"
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2022-06-06 19:54:02 -04:00
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#if CIRCUITPY_WIFI
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#include "shared-bindings/wifi/__init__.h"
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#endif
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#if CIRCUITPY_DOTENV
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#include "shared-module/dotenv/__init__.h"
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#endif
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2022-06-14 20:02:34 -04:00
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#include "esp_log.h"
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static const char *TAG = "CP webserver";
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enum request_state {
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STATE_METHOD,
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STATE_PATH,
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STATE_VERSION,
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STATE_HEADER_KEY,
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STATE_HEADER_VALUE,
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STATE_BODY
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};
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typedef struct {
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enum request_state state;
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char method[6];
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char path[256];
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uint32_t content_length;
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size_t offset;
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} _request;
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2022-06-06 19:54:02 -04:00
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static wifi_radio_error_t wifi_status = WIFI_RADIO_ERROR_NONE;
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2022-06-09 19:59:24 -04:00
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static socketpool_socketpool_obj_t pool;
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static socketpool_socket_obj_t listening;
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2022-06-14 20:02:34 -04:00
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static socketpool_socket_obj_t active;
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static _request active_request;
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2022-06-09 19:59:24 -04:00
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2022-06-06 19:54:02 -04:00
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void supervisor_web_workflow_status(void) {
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serial_write_compressed(translate("Wi-Fi: "));
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if (common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj)) {
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uint32_t ipv4_address = wifi_radio_get_ipv4_address(&common_hal_wifi_radio_obj);
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2022-06-13 18:38:19 -04:00
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if (wifi_status == WIFI_RADIO_ERROR_AUTH_EXPIRE ||
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wifi_status == WIFI_RADIO_ERROR_AUTH_FAIL) {
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serial_write_compressed(translate("Authentication failure"));
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} else if (wifi_status != WIFI_RADIO_ERROR_NONE) {
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2022-06-06 19:54:02 -04:00
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mp_printf(&mp_plat_print, "%d", wifi_status);
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} else if (ipv4_address == 0) {
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serial_write_compressed(translate("No IP"));
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} else {
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uint8_t *octets = (uint8_t *)&ipv4_address;
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mp_printf(&mp_plat_print, "%d.%d.%d.%d", octets[0], octets[1], octets[2], octets[3]);
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2022-06-13 18:38:19 -04:00
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// TODO: Use these unicode to show signal strength: ▂▄▆█
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2022-06-06 19:54:02 -04:00
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}
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} else {
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serial_write_compressed(translate("off"));
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}
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}
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void supervisor_start_web_workflow(void) {
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#if CIRCUITPY_WEB_WORKFLOW && CIRCUITPY_WIFI
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2022-06-14 20:02:34 -04:00
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if (common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj) &&
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wifi_radio_get_ipv4_address(&common_hal_wifi_radio_obj) != 0) {
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// Already started.
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return;
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}
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2022-06-06 19:54:02 -04:00
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char ssid[33];
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char password[64];
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mp_int_t ssid_len = 0;
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mp_int_t password_len = 0;
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#if CIRCUITPY_DOTENV
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ssid_len = dotenv_get_key("/.env", "CIRCUITPY_WIFI_SSID", ssid, sizeof(ssid) - 1);
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password_len = dotenv_get_key("/.env", "CIRCUITPY_WIFI_PASSWORD", password, sizeof(password) - 1);
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#endif
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if (ssid_len <= 0 || (size_t)ssid_len >= sizeof(ssid) ||
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password_len <= 0 || (size_t)password_len >= sizeof(password)) {
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return;
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}
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common_hal_wifi_init(false);
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common_hal_wifi_radio_set_enabled(&common_hal_wifi_radio_obj, true);
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2022-06-13 18:38:19 -04:00
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// TODO: Do our own scan so that we can find the channel we want before calling connect.
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// Otherwise, connect will do a full slow scan to pick the best AP.
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2022-06-06 19:54:02 -04:00
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// NUL terminate the strings because dotenv doesn't.
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ssid[ssid_len] = '\0';
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password[password_len] = '\0';
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wifi_status = common_hal_wifi_radio_connect(
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&common_hal_wifi_radio_obj, (uint8_t *)ssid, ssid_len, (uint8_t *)password, password_len,
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2022-06-13 18:38:19 -04:00
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0, 0.1, NULL, 0);
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2022-06-06 19:54:02 -04:00
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if (wifi_status != WIFI_RADIO_ERROR_NONE) {
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common_hal_wifi_radio_set_enabled(&common_hal_wifi_radio_obj, false);
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2022-06-09 19:59:24 -04:00
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return;
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2022-06-06 19:54:02 -04:00
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}
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2022-06-09 19:59:24 -04:00
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pool.base.type = &socketpool_socketpool_type;
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common_hal_socketpool_socketpool_construct(&pool, &common_hal_wifi_radio_obj);
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listening.base.type = &socketpool_socket_type;
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socketpool_socket(&pool, SOCKETPOOL_AF_INET, SOCKETPOOL_SOCK_STREAM, &listening);
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2022-06-14 20:02:34 -04:00
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common_hal_socketpool_socket_settimeout(&listening, 0);
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2022-06-09 19:59:24 -04:00
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// Bind to any ip.
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// TODO: Make this port .env configurable.
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2022-06-14 20:02:34 -04:00
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const char *ip = "192.168.1.94";
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common_hal_socketpool_socket_bind(&listening, ip, strlen(ip), 80);
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2022-06-09 19:59:24 -04:00
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common_hal_socketpool_socket_listen(&listening, 1);
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2022-06-14 20:02:34 -04:00
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ESP_LOGW(TAG, "listening on socket %d", listening.num);
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active.base.type = &socketpool_socket_type;
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active.num = -1;
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active.connected = false;
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2022-06-09 19:59:24 -04:00
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// Accept a connection and start parsing:
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// * HTTP method
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// * HTTP path
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// * Headers we care about:
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// * Authentication
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// * Must match CIRCUITPY_WEB_AUTH
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// * Host
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// * IP - ok
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// * cpy-mac.local - ok
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// * circuitpython.local - redirect
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// * Content-Length
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//
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// PUT /fs/<filename>
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// GET /fs/<filename>
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// - File contents
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// - JSON directory representation
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// GET /cp/devices.json
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// - JSON list of MDNS results
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// GET /cp/version.json
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// - JSON version info
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// GET /
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// - Super basic editor
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// GET /ws/circuitpython
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// GET /ws/user
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// - WebSockets
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2022-06-06 19:54:02 -04:00
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#endif
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}
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2022-06-14 20:02:34 -04:00
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static void _process_request(socketpool_socket_obj_t *socket, _request *request) {
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bool more = true;
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bool error = false;
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uint8_t c;
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while (more && !error) {
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int len = socketpool_socket_recv_into(socket, &c, 1);
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if (len != 1) {
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if (len != -EAGAIN && len != -EBADF) {
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ESP_LOGW(TAG, "received %d", len);
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}
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more = false;
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break;
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}
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ESP_LOGI(TAG, "%c", c);
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switch (request->state) {
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case STATE_METHOD: {
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if (c == ' ') {
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request->method[request->offset] = '\0';
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request->offset = 0;
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request->state = STATE_PATH;
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} else if (request->offset > sizeof(request->method) - 1) {
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// Skip methods that are too long.
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} else {
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request->method[request->offset] = c;
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request->offset++;
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}
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break;
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}
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case STATE_PATH: {
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if (c == ' ') {
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request->path[request->offset] = '\0';
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request->offset = 0;
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ESP_LOGW(TAG, "Request %s %s", request->method, request->path);
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request->state = STATE_VERSION;
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error = true;
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} else if (request->offset > sizeof(request->path) - 1) {
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// Skip methods that are too long.
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} else {
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request->path[request->offset] = c;
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request->offset++;
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}
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break;
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}
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case STATE_VERSION:
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break;
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case STATE_HEADER_KEY:
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break;
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case STATE_HEADER_VALUE:
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break;
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case STATE_BODY:
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break;
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}
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}
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if (error) {
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const char *error_response = "HTTP/1.1 501 Not Implemented";
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int nodelay = 1;
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int err = lwip_setsockopt(socket->num, IPPROTO_TCP, TCP_NODELAY, &nodelay, sizeof(nodelay));
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int sent = socketpool_socket_send(socket, (const uint8_t *)error_response, strlen(error_response));
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ESP_LOGW(TAG, "sent %d %d", sent, err);
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vTaskDelay(0);
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socketpool_socket_close(socket);
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}
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}
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void supervisor_web_workflow_background(void) {
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// Otherwise, see if we have another socket to accept.
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if (!common_hal_socketpool_socket_get_connected(&active) &&
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!common_hal_socketpool_socket_get_closed(&listening) &&
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listening.num > 0) {
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uint32_t ip;
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uint32_t port;
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int newsoc = socketpool_socket_accept(&listening, (uint8_t *)&ip, &port);
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if (newsoc != -11) {
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ESP_LOGI(TAG, "newsoc %d", newsoc);
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}
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if (newsoc > 0) {
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ESP_LOGE(TAG, "Accepted socket %d", newsoc);
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// TODO: Don't do this because it uses the private struct layout.
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// Create the socket
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active.num = newsoc;
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active.pool = &pool;
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active.connected = true;
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common_hal_socketpool_socket_settimeout(&active, 0);
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active_request.state = STATE_METHOD;
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active_request.offset = 0;
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lwip_fcntl(newsoc, F_SETFL, O_NONBLOCK);
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}
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}
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// If we have a request in progress, continue working on it.
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if (common_hal_socketpool_socket_get_connected(&active)) {
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_process_request(&active, &active_request);
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}
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}
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2022-06-06 19:54:02 -04:00
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void supervisor_stop_web_workflow(void) {
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}
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