Makes WebInterface working.

device/main/WebInterface.cpp

@@ -1,17 +1,272 @@
 #include "WebInterface.hpp"
 
-#include <AsyncTCP.h>
-#include <ESPAsyncWebServer.h>
+#include <esp_http_server.h>
+#include <esp_log.h>
+#include "esp_vfs.h"
+#include <board.h>
+#include "periph_sdcard.h"
+#include <errno.h>
+#include <sdcard_scan.h>
+
+#include <fcntl.h>
+#include "esp_system.h"
+
+static const char *TAG = "WebInterface";
+
+#define FILE_PATH_MAX (ESP_VFS_PATH_MAX + 128)
+#define SCRATCH_BUFSIZE (10240)
+
+#define CHECK_FILE_EXTENSION(filename, ext) (strcasecmp(&filename[strlen(filename) - strlen(ext)], ext) == 0)
+
+typedef struct rest_server_context {
+    char base_path[ESP_VFS_PATH_MAX + 1];
+    char scratch[SCRATCH_BUFSIZE];
+} rest_server_context_t;
 
 WebInterface::WebInterface() {
-	server = new AsyncWebServer(80);
+
 }
 
 void WebInterface::start() {
-	server->on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
-		Serial.println("Received a request");
-		request->send(200, "text/plain", "Hello World");
-	});
+    initSD();
+	server = start_webserver();
+}
 
-	server->begin();
-}
+void sdcard_url_save_cb(void *user_data, char *url)
+{
+    ESP_LOGI(TAG, "Found file: %s", url);
+    /* playlist_operator_handle_t sdcard_handle = (playlist_operator_handle_t)user_data;
+    esp_err_t ret = sdcard_list_save(sdcard_handle, url);
+
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Fail to save sdcard url to sdcard playlist");
+    } */
+}
+
+void WebInterface::initSD() {
+    esp_periph_config_t periph_cfg = DEFAULT_ESP_PERIPH_SET_CONFIG();
+    esp_periph_set_handle_t set = esp_periph_set_init(&periph_cfg);
+
+    // Initialize SD Card peripheral
+    if (audio_board_sdcard_init(set, SD_MODE_4_LINE) == ESP_FAIL) {
+        ESP_LOGE(TAG, "Sdcard not mounted");
+    } else {
+        ESP_LOGI(TAG, "SDCard mounted");
+    }
+/* 
+    const char* fileExtensions[1] = {"html"};
+ */
+    sdcard_scan(sdcard_url_save_cb, "/sdcard", 5, NULL, 0, NULL);
+}
+
+/* An HTTP GET handler */
+esp_err_t hello_get_handler(httpd_req_t *req)
+{
+    char*  buf;
+    size_t buf_len;
+
+    /* Get header value string length and allocate memory for length + 1,
+     * extra byte for null termination */
+    buf_len = httpd_req_get_hdr_value_len(req, "Host") + 1;
+    if (buf_len > 1) {
+        buf = (char*)malloc(buf_len);
+        /* Copy null terminated value string into buffer */
+        if (httpd_req_get_hdr_value_str(req, "Host", buf, buf_len) == ESP_OK) {
+            ESP_LOGI(TAG, "Found header => Host: %s", buf);
+        }
+        free(buf);
+    }
+
+    buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-2") + 1;
+    if (buf_len > 1) {
+        buf = (char*)malloc(buf_len);
+        if (httpd_req_get_hdr_value_str(req, "Test-Header-2", buf, buf_len) == ESP_OK) {
+            ESP_LOGI(TAG, "Found header => Test-Header-2: %s", buf);
+        }
+        free(buf);
+    }
+
+    buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-1") + 1;
+    if (buf_len > 1) {
+        buf = (char*)malloc(buf_len);
+        if (httpd_req_get_hdr_value_str(req, "Test-Header-1", buf, buf_len) == ESP_OK) {
+            ESP_LOGI(TAG, "Found header => Test-Header-1: %s", buf);
+        }
+        free(buf);
+    }
+
+    /* Read URL query string length and allocate memory for length + 1,
+     * extra byte for null termination */
+    buf_len = httpd_req_get_url_query_len(req) + 1;
+    if (buf_len > 1) {
+        buf = (char*)malloc(buf_len);
+        if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
+            ESP_LOGI(TAG, "Found URL query => %s", buf);
+            char param[32];
+            /* Get value of expected key from query string */
+            if (httpd_query_key_value(buf, "query1", param, sizeof(param)) == ESP_OK) {
+                ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
+            }
+            if (httpd_query_key_value(buf, "query3", param, sizeof(param)) == ESP_OK) {
+                ESP_LOGI(TAG, "Found URL query parameter => query3=%s", param);
+            }
+            if (httpd_query_key_value(buf, "query2", param, sizeof(param)) == ESP_OK) {
+                ESP_LOGI(TAG, "Found URL query parameter => query2=%s", param);
+            }
+        }
+        free(buf);
+    }
+
+    /* Set some custom headers */
+    httpd_resp_set_hdr(req, "Custom-Header-1", "Custom-Value-1");
+    httpd_resp_set_hdr(req, "Custom-Header-2", "Custom-Value-2");
+
+    /* Send response with custom headers and body set as the
+     * string passed in user context*/
+    //const char* resp_str = (const char*) req->user_ctx;
+    httpd_resp_send(req, "ello orld", HTTPD_RESP_USE_STRLEN);
+
+    /* After sending the HTTP response the old HTTP request
+     * headers are lost. Check if HTTP request headers can be read now. */
+    if (httpd_req_get_hdr_value_len(req, "Host") == 0) {
+        ESP_LOGI(TAG, "Request headers lost");
+    }
+    return ESP_OK;
+}
+
+/* Set HTTP response content type according to file extension */
+esp_err_t set_content_type_from_file(httpd_req_t *req, const char *filepath)
+{
+    const char *type = "text/plain";
+    if (CHECK_FILE_EXTENSION(filepath, ".html")) {
+        type = "text/html";
+    } else if (CHECK_FILE_EXTENSION(filepath, ".js")) {
+        type = "application/javascript";
+    } else if (CHECK_FILE_EXTENSION(filepath, ".css")) {
+        type = "text/css";
+    } else if (CHECK_FILE_EXTENSION(filepath, ".png")) {
+        type = "image/png";
+    } else if (CHECK_FILE_EXTENSION(filepath, ".ico")) {
+        type = "image/x-icon";
+    } else if (CHECK_FILE_EXTENSION(filepath, ".svg")) {
+        type = "text/xml";
+    }
+    return httpd_resp_set_type(req, type);
+}
+
+/* Send HTTP response with the contents of the requested file */
+esp_err_t rest_common_get_handler(httpd_req_t *req)
+{
+    char filepath[FILE_PATH_MAX];
+
+    rest_server_context_t *rest_context = (rest_server_context_t *)req->user_ctx;
+    strlcpy(filepath, rest_context->base_path, sizeof(filepath));
+
+    if (req->uri[strlen(req->uri) - 1] == '/') {
+        strlcat(filepath, "/index.html", sizeof(filepath));
+    } else {
+        strlcat(filepath, req->uri, sizeof(filepath));
+    }
+
+    int fd = open(filepath, O_RDONLY);
+    if (fd == -1) {
+        ESP_LOGE(TAG, "Failed to open file : %s. Errno: %d", filepath, errno);
+        /* Respond with 500 Internal Server Error */
+
+        char responseError[255];
+        char* error_name;
+
+        switch (errno)
+        {
+            case EACCES:
+                error_name = "EACCESS";
+                break;
+            case ENOENT:
+                error_name = "ENOENT";
+                break;
+            default:
+                error_name = "not parsed";
+        }
+
+        sprintf(responseError, "Failed to read existing file. %d => %s", errno, error_name);
+
+        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, responseError);
+        return ESP_FAIL;
+    }
+
+    set_content_type_from_file(req, filepath);
+
+    char *chunk = rest_context->scratch;
+    ssize_t read_bytes;
+    do {
+        /* Read file in chunks into the scratch buffer */
+        read_bytes = read(fd, chunk, SCRATCH_BUFSIZE);
+        if (read_bytes == -1) {
+            ESP_LOGE(TAG, "Failed to read file : %s", filepath);
+        } else if (read_bytes > 0) {
+            /* Send the buffer contents as HTTP response chunk */
+            if (httpd_resp_send_chunk(req, chunk, read_bytes) != ESP_OK) {
+                close(fd);
+                ESP_LOGE(TAG, "File sending failed!");
+                /* Abort sending file */
+                httpd_resp_sendstr_chunk(req, NULL);
+                /* Respond with 500 Internal Server Error */
+                httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to send file");
+                return ESP_FAIL;
+            }
+        }
+    } while (read_bytes > 0);
+    /* Close file after sending complete */
+    close(fd);
+    ESP_LOGI(TAG, "File sending complete");
+    /* Respond with an empty chunk to signal HTTP response completion */
+    httpd_resp_send_chunk(req, NULL, 0);
+    return ESP_OK;
+}
+
+
+httpd_handle_t WebInterface::start_webserver(void) {
+    httpd_handle_t server = NULL;
+    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
+    config.lru_purge_enable = true;
+    config.uri_match_fn = httpd_uri_match_wildcard;
+
+    httpd_uri_t hello = {
+		.uri = "/hello",
+		.method = HTTP_GET,
+		.handler = hello_get_handler,
+        .user_ctx = (void*)"asdff"
+	};
+
+    // Start the httpd server
+    ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
+    if (httpd_start(&server, &config) == ESP_OK) {
+        // Set URI handlers
+        ESP_LOGI(TAG, "Registering URI handlers");
+        httpd_register_uri_handler(server, &hello);
+
+
+        rest_server_context_t *fileContext = (rest_server_context_t*)calloc(1, sizeof(rest_server_context_t));
+
+        if (! fileContext) {
+            ESP_LOGE(TAG, "No memory for rest context");
+            return NULL;
+        }
+        strlcpy(fileContext->base_path, "/sdcard", sizeof(fileContext->base_path));    
+
+        /* URI handler for getting web server files */
+        httpd_uri_t common_get_uri = {
+            .uri = "/*",
+            .method = HTTP_GET,
+            .handler = rest_common_get_handler,
+            .user_ctx = fileContext
+        };
+        httpd_register_uri_handler(server, &common_get_uri);
+
+        return server;
+    }
+
+
+    ESP_LOGI(TAG, "Error starting server!");
+    return NULL;
+}

device/main/WebInterface.hpp

@@ -1,14 +1,19 @@
 #ifndef _WEB_INTERFACE_HPP
 #define _WEB_INTERFACE_HPP
 
-#include <ESPAsyncWebServer.h>
+#include <esp_http_server.h>
 
 class WebInterface {
-	AsyncWebServer* server;
+	httpd_handle_t server = NULL;
 
 	public:
 		WebInterface();
 		void start();
+
+	private:
+		void initSD();
+		httpd_handle_t start_webserver();
+		//esp_err_t hello_get_handler(httpd_req_t *req); 
 };
 
 #endif