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								/* HTTP File Server Example
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								   This example code is in the Public Domain (or CC0 licensed, at your option.)
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								   Unless required by applicable law or agreed to in writing, this
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								   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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								   CONDITIONS OF ANY KIND, either express or implied.
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								*/
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								#include <stdio.h>
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								#include <string.h>
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								#include <sys/param.h>
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								#include <sys/unistd.h>
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								#include <sys/stat.h>
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								#include <dirent.h>
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								#include "esp_err.h"
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								#include "esp_log.h"
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								#include "esp_vfs.h"
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								#include "esp_spiffs.h"
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								#include "esp_http_server.h"
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								/* Max length a file path can have on storage */
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								#define FILE_PATH_MAX (ESP_VFS_PATH_MAX + CONFIG_SPIFFS_OBJ_NAME_LEN)
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								/* Max size of an individual file. Make sure this
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								 * value is same as that set in upload_script.html */
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								#define MAX_FILE_SIZE   (200*1024) // 200 KB
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								#define MAX_FILE_SIZE_STR "200KB"
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								/* Scratch buffer size */
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								#define SCRATCH_BUFSIZE  8192
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								struct file_server_data {
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								    /* Base path of file storage */
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								    char base_path[ESP_VFS_PATH_MAX + 1];
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								    /* Scratch buffer for temporary storage during file transfer */
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								    char scratch[SCRATCH_BUFSIZE];
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								};
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								static const char *TAG = "file_server";
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								/* Handler to redirect incoming GET request for /index.html to /
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								 * This can be overridden by uploading file with same name */
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								static esp_err_t index_html_get_handler(httpd_req_t *req)
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								{
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								    httpd_resp_set_status(req, "307 Temporary Redirect");
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								    httpd_resp_set_hdr(req, "Location", "/");
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								    httpd_resp_send(req, NULL, 0);  // Response body can be empty
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								    return ESP_OK;
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								}
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								/* Handler to respond with an icon file embedded in flash.
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								 * Browsers expect to GET website icon at URI /favicon.ico.
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								 * This can be overridden by uploading file with same name */
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								static esp_err_t favicon_get_handler(httpd_req_t *req)
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								{
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								    extern const unsigned char favicon_ico_start[] asm("_binary_favicon_ico_start");
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								    extern const unsigned char favicon_ico_end[]   asm("_binary_favicon_ico_end");
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								    const size_t favicon_ico_size = (favicon_ico_end - favicon_ico_start);
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								    httpd_resp_set_type(req, "image/x-icon");
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								    httpd_resp_send(req, (const char *)favicon_ico_start, favicon_ico_size);
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								    return ESP_OK;
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								}
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								/* Send HTTP response with a run-time generated html consisting of
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								 * a list of all files and folders under the requested path.
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								 * In case of SPIFFS this returns empty list when path is any
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								 * string other than '/', since SPIFFS doesn't support directories */
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								static esp_err_t http_resp_dir_html(httpd_req_t *req, const char *dirpath)
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								{
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								    char entrypath[FILE_PATH_MAX];
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								    char entrysize[16];
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								    const char *entrytype;
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								    struct dirent *entry;
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								    struct stat entry_stat;
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								    DIR *dir = opendir(dirpath);
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								    const size_t dirpath_len = strlen(dirpath);
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								    /* Retrieve the base path of file storage to construct the full path */
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								    strlcpy(entrypath, dirpath, sizeof(entrypath));
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								    if (!dir) {
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								        ESP_LOGE(TAG, "Failed to stat dir : %s", dirpath);
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								        /* Respond with 404 Not Found */
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								        httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "Directory does not exist");
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								        return ESP_FAIL;
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								    }
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								    /* Send HTML file header */
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								    httpd_resp_sendstr_chunk(req, "<!DOCTYPE html><html><body>");
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								    /* Get handle to embedded file upload script */
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								    extern const unsigned char upload_script_start[] asm("_binary_upload_script_html_start");
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								    extern const unsigned char upload_script_end[]   asm("_binary_upload_script_html_end");
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								    const size_t upload_script_size = (upload_script_end - upload_script_start);
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								    /* Add file upload form and script which on execution sends a POST request to /upload */
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								    httpd_resp_send_chunk(req, (const char *)upload_script_start, upload_script_size);
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								    /* Send file-list table definition and column labels */
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								    httpd_resp_sendstr_chunk(req,
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								        "<table class=\"fixed\" border=\"1\">"
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								        "<col width=\"800px\" /><col width=\"300px\" /><col width=\"300px\" /><col width=\"100px\" />"
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								        "<thead><tr><th>Name</th><th>Type</th><th>Size (Bytes)</th><th>Delete</th></tr></thead>"
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								        "<tbody>");
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								    /* Iterate over all files / folders and fetch their names and sizes */
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								    while ((entry = readdir(dir)) != NULL) {
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								        entrytype = (entry->d_type == DT_DIR ? "directory" : "file");
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								        strlcpy(entrypath + dirpath_len, entry->d_name, sizeof(entrypath) - dirpath_len);
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								        if (stat(entrypath, &entry_stat) == -1) {
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								            ESP_LOGE(TAG, "Failed to stat %s : %s", entrytype, entry->d_name);
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								            continue;
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								        }
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								        sprintf(entrysize, "%ld", entry_stat.st_size);
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								        ESP_LOGI(TAG, "Found %s : %s (%s bytes)", entrytype, entry->d_name, entrysize);
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								        /* Send chunk of HTML file containing table entries with file name and size */
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								        httpd_resp_sendstr_chunk(req, "<tr><td><a href=\"");
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								        httpd_resp_sendstr_chunk(req, req->uri);
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								        httpd_resp_sendstr_chunk(req, entry->d_name);
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								        if (entry->d_type == DT_DIR) {
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								            httpd_resp_sendstr_chunk(req, "/");
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								        }
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								        httpd_resp_sendstr_chunk(req, "\">");
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								        httpd_resp_sendstr_chunk(req, entry->d_name);
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								        httpd_resp_sendstr_chunk(req, "</a></td><td>");
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								        httpd_resp_sendstr_chunk(req, entrytype);
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								        httpd_resp_sendstr_chunk(req, "</td><td>");
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								        httpd_resp_sendstr_chunk(req, entrysize);
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								        httpd_resp_sendstr_chunk(req, "</td><td>");
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								        httpd_resp_sendstr_chunk(req, "<form method=\"post\" action=\"/delete");
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							 | 
							
								
							 | 
							
							
								        httpd_resp_sendstr_chunk(req, req->uri);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_sendstr_chunk(req, entry->d_name);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_sendstr_chunk(req, "\"><button type=\"submit\">Delete</button></form>");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_sendstr_chunk(req, "</td></tr>\n");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    closedir(dir);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Finish the file list table */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_sendstr_chunk(req, "</tbody></table>");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Send remaining chunk of HTML file to complete it */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_sendstr_chunk(req, "</body></html>");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Send empty chunk to signal HTTP response completion */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_sendstr_chunk(req, NULL);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return ESP_OK;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								#define IS_FILE_EXT(filename, ext) \
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    (strcasecmp(&filename[strlen(filename) - sizeof(ext) + 1], ext) == 0)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								/* Set HTTP response content type according to file extension */
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								static esp_err_t set_content_type_from_file(httpd_req_t *req, const char *filename)
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    if (IS_FILE_EXT(filename, ".pdf")) {
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return httpd_resp_set_type(req, "application/pdf");
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    } else if (IS_FILE_EXT(filename, ".html")) {
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return httpd_resp_set_type(req, "text/html");
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    } else if (IS_FILE_EXT(filename, ".jpeg")) {
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return httpd_resp_set_type(req, "image/jpeg");
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    } else if (IS_FILE_EXT(filename, ".ico")) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return httpd_resp_set_type(req, "image/x-icon");
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* This is a limited set only */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* For any other type always set as plain text */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return httpd_resp_set_type(req, "text/plain");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								/* Copies the full path into destination buffer and returns
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								 * pointer to path (skipping the preceding base path) */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								static const char* get_path_from_uri(char *dest, const char *base_path, const char *uri, size_t destsize)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    const size_t base_pathlen = strlen(base_path);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    size_t pathlen = strlen(uri);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    const char *quest = strchr(uri, '?');
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (quest) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        pathlen = MIN(pathlen, quest - uri);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    const char *hash = strchr(uri, '#');
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (hash) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        pathlen = MIN(pathlen, hash - uri);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (base_pathlen + pathlen + 1 > destsize) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Full path string won't fit into destination buffer */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return NULL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Construct full path (base + path) */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    strcpy(dest, base_path);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    strlcpy(dest + base_pathlen, uri, pathlen + 1);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Return pointer to path, skipping the base */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return dest + base_pathlen;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								/* Handler to download a file kept on the server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								static esp_err_t download_get_handler(httpd_req_t *req)
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    char filepath[FILE_PATH_MAX];
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    FILE *fd = NULL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    struct stat file_stat;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    const char *filename = get_path_from_uri(filepath, ((struct file_server_data *)req->user_ctx)->base_path,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                                             req->uri, sizeof(filepath));
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!filename) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Filename is too long");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Filename too long");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* If name has trailing '/', respond with directory contents */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (filename[strlen(filename) - 1] == '/') {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return http_resp_dir_html(req, filepath);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (stat(filepath, &file_stat) == -1) {
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* If file not present on SPIFFS check if URI
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								         * corresponds to one of the hardcoded paths */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        if (strcmp(filename, "/index.html") == 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            return index_html_get_handler(req);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        } else if (strcmp(filename, "/favicon.ico") == 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            return favicon_get_handler(req);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        }
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Failed to stat file : %s", filepath);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 404 Not Found */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "File does not exist");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    fd = fopen(filepath, "r");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!fd) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Failed to read existing file : %s", filepath);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to read existing file");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    ESP_LOGI(TAG, "Sending file : %s (%ld bytes)...", filename, file_stat.st_size);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    set_content_type_from_file(req, filename);
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Retrieve the pointer to scratch buffer for temporary storage */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    char *chunk = ((struct file_server_data *)req->user_ctx)->scratch;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    size_t chunksize;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    do {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Read file in chunks into the scratch buffer */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        chunksize = fread(chunk, 1, SCRATCH_BUFSIZE, fd);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Send the buffer contents as HTTP response chunk */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        if (httpd_resp_send_chunk(req, chunk, chunksize) != ESP_OK) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            fclose(fd);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            ESP_LOGE(TAG, "File sending failed!");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            /* Abort sending file */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            httpd_resp_sendstr_chunk(req, NULL);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								            /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to send file");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Keep looping till the whole file is sent */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    } while (chunksize != 0);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Close file after sending complete */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    fclose(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;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								/* Handler to upload a file onto the server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								static esp_err_t upload_post_handler(httpd_req_t *req)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    char filepath[FILE_PATH_MAX];
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    FILE *fd = NULL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    struct stat file_stat;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Skip leading "/upload" from URI to get filename */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Note sizeof() counts NULL termination hence the -1 */
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    const char *filename = get_path_from_uri(filepath, ((struct file_server_data *)req->user_ctx)->base_path,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                                             req->uri + sizeof("/upload") - 1, sizeof(filepath));
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!filename) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Filename too long");
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    /* Filename cannot have a trailing '/' */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (filename[strlen(filename) - 1] == '/') {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Invalid filename : %s", filename);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Invalid filename");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (stat(filepath, &file_stat) == 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "File already exists : %s", filepath);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 400 Bad Request */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "File already exists");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* File cannot be larger than a limit */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (req->content_len > MAX_FILE_SIZE) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "File too large : %d bytes", req->content_len);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 400 Bad Request */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                            "File size must be less than "
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                            MAX_FILE_SIZE_STR "!");
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Return failure to close underlying connection else the
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								         * incoming file content will keep the socket busy */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    fd = fopen(filepath, "w");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!fd) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Failed to create file : %s", filepath);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to create file");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    ESP_LOGI(TAG, "Receiving file : %s...", filename);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Retrieve the pointer to scratch buffer for temporary storage */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    char *buf = ((struct file_server_data *)req->user_ctx)->scratch;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    int received;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Content length of the request gives
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								     * the size of the file being uploaded */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    int remaining = req->content_len;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    while (remaining > 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGI(TAG, "Remaining size : %d", remaining);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Receive the file part by part into a buffer */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        if ((received = httpd_req_recv(req, buf, MIN(remaining, SCRATCH_BUFSIZE))) <= 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            if (received == HTTPD_SOCK_ERR_TIMEOUT) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                /* Retry if timeout occurred */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                continue;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            /* In case of unrecoverable error,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								             * close and delete the unfinished file*/
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            fclose(fd);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            unlink(filepath);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            ESP_LOGE(TAG, "File reception failed!");
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								            /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to receive file");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Write buffer content to file on storage */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        if (received && (received != fwrite(buf, 1, received, fd))) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            /* Couldn't write everything to file!
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								             * Storage may be full? */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            fclose(fd);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            unlink(filepath);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            ESP_LOGE(TAG, "File write failed!");
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								            /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Failed to write file to storage");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Keep track of remaining size of
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								         * the file left to be uploaded */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        remaining -= received;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Close file upon upload completion */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    fclose(fd);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    ESP_LOGI(TAG, "File reception complete");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Redirect onto root to see the updated file list */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_set_status(req, "303 See Other");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_set_hdr(req, "Location", "/");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_sendstr(req, "File uploaded successfully");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return ESP_OK;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								/* Handler to delete a file from the server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								static esp_err_t delete_post_handler(httpd_req_t *req)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    char filepath[FILE_PATH_MAX];
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    struct stat file_stat;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    /* Skip leading "/delete" from URI to get filename */
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Note sizeof() counts NULL termination hence the -1 */
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    const char *filename = get_path_from_uri(filepath, ((struct file_server_data *)req->user_ctx)->base_path,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								                                             req->uri  + sizeof("/delete") - 1, sizeof(filepath));
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!filename) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 500 Internal Server Error */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Filename too long");
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								    /* Filename cannot have a trailing '/' */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (filename[strlen(filename) - 1] == '/') {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Invalid filename : %s", filename);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Invalid filename");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (stat(filepath, &file_stat) == -1) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "File does not exist : %s", filename);
							 | 
						
					
						
							
								
									
										
										
										
											2019-02-01 18:41:46 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        /* Respond with 400 Bad Request */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "File does not exist");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    ESP_LOGI(TAG, "Deleting file : %s", filename);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Delete file */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    unlink(filepath);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Redirect onto root to see the updated file list */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_set_status(req, "303 See Other");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_set_hdr(req, "Location", "/");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_resp_sendstr(req, "File deleted successfully");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return ESP_OK;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								/* Function to start the file server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								esp_err_t start_file_server(const char *base_path)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								{
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    static struct file_server_data *server_data = NULL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Validate file storage base path */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!base_path || strcmp(base_path, "/spiffs") != 0) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "File server presently supports only '/spiffs' as base path");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_ERR_INVALID_ARG;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (server_data) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "File server already started");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_ERR_INVALID_STATE;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Allocate memory for server data */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    server_data = calloc(1, sizeof(struct file_server_data));
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (!server_data) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Failed to allocate memory for server data");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_ERR_NO_MEM;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    strlcpy(server_data->base_path, base_path,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								            sizeof(server_data->base_path));
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_handle_t server = NULL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* Use the URI wildcard matching function in order to
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								     * allow the same handler to respond to multiple different
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								     * target URIs which match the wildcard scheme */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    config.uri_match_fn = httpd_uri_match_wildcard;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    ESP_LOGI(TAG, "Starting HTTP Server");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    if (httpd_start(&server, &config) != ESP_OK) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        ESP_LOGE(TAG, "Failed to start file server!");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        return ESP_FAIL;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* URI handler for getting uploaded files */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_uri_t file_download = {
							 | 
						
					
						
							
								
									
										
										
										
											2019-04-26 01:28:33 +05:30
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
							
								        .uri       = "/*",  // Match all URIs of type /path/to/file
							 | 
						
					
						
							
								
									
										
										
										
											2018-12-16 23:40:24 +05:30
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .method    = HTTP_GET,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .handler   = download_get_handler,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .user_ctx  = server_data    // Pass server data as context
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    };
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_register_uri_handler(server, &file_download);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* URI handler for uploading files to server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_uri_t file_upload = {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .uri       = "/upload/*",   // Match all URIs of type /upload/path/to/file
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .method    = HTTP_POST,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .handler   = upload_post_handler,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .user_ctx  = server_data    // Pass server data as context
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    };
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_register_uri_handler(server, &file_upload);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    /* URI handler for deleting files from server */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_uri_t file_delete = {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .uri       = "/delete/*",   // Match all URIs of type /delete/path/to/file
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .method    = HTTP_POST,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .handler   = delete_post_handler,
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								        .user_ctx  = server_data    // Pass server data as context
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    };
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    httpd_register_uri_handler(server, &file_delete);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								    return ESP_OK;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								}
							 |