New website branch
previous was doomed, that is why I made a new brench that was updated with the main.
This commit is contained in:
TeunBugwood
294666
project/Core/Src/llfs_data.c
294666
project/Core/Src/llfs_data.c
File diff suppressed because it is too large
Load Diff
@@ -33,6 +33,7 @@
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#include "modbus_tcp.h"
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#include "UDP_broadcast.h"
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#include "tcp_cmd.h"
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#include "website_backend.h"
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/* USER CODE END Includes */
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@@ -155,6 +156,9 @@ int main(void)
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LOG_WARN(TAG,"error setting owner's details");
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}
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/* Initialize website backend */
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wbe_init();
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/* USER CODE END 2 */
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/* Infinite loop */
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350
project/Core/Src/website_backend.c
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350
project/Core/Src/website_backend.c
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@@ -0,0 +1,350 @@
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/**
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* @file website_backend.h
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* @brief Backend for the website to operate
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* @author Toon B.
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*/
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// Includes
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#include "website_backend.h"
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// Static functions
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static size_t wbe_get_images(char* images_string, size_t file_count_fs);
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static inline void wbe_build_infostring(const llfs_file_t* file_list, char* info_string, const size_t cnt);
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static void wbe_decoding_url(const char* encoded, char* decoded);
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static uint32_t wbe_color_value(const char* rgb);
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void wbe_init(void) {
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httpd_init();
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LOG_DEBUG("WBE", "Initialize webserver");
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// Set starting LCD screen
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wbe_display("Please Edit Me !", LCD_GREEN, LCD_BLACK, SD_IMG);
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return;
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}
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int fs_open_custom(struct fs_file* file, const char* name) {
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// Variables
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llfs_file_t* wanted_file = llfs_file_open(name + 1);
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size_t buffer_len = 0;
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static char image_stringbuffer[STR_MAX] = "";
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// The wanted file was found in the filesystem
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if (wanted_file != NULL) {
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// Debug info
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LOG_DEBUG("WBE", "The file : %s was found", wanted_file->name);
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// Give the information about the file to the client
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file->data = (const char*)wanted_file->data;
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file->len = (int)wanted_file->len;
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file->index = (int)wanted_file->len;
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file->is_custom_file = 1;
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file->pextension = NULL;
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file->flags = FS_FILE_FLAGS_HEADER_INCLUDED;
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return 1;
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}
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/*
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* The endpoint '/images.info' is called when the client wants to call for the
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* information string that contains the names of the available images.
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*/
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if (strncmp(name, "/images.info", strlen("/images.info")) == 0) {
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// Create the information string for the images in the filesystem
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buffer_len = wbe_get_images(image_stringbuffer, llfs_file_count());
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// Give the string back to the client
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file->data = image_stringbuffer;
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file->len = (int)buffer_len;
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file->index = (int)buffer_len;
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file->is_custom_file = 1;
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file->pextension = NULL;
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file->flags = FS_FILE_FLAGS_HEADER_INCLUDED;
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return 1;
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}
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// Endpoint when client wants to send information to the backend
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if (strncmp(name, "/cgi", 3) == 0) {
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// Give the original index.html back to the client
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wanted_file = llfs_file_open("index.html");
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if (wanted_file != NULL) {
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file->data = (const char*)wanted_file->data;
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file->len = (int)wanted_file->len;
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file->index = (int)wanted_file->len;
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file->is_custom_file = 1;
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file->pextension = NULL;
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file->flags = FS_FILE_FLAGS_HEADER_INCLUDED;
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return 1;
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}
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}
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return 0;
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}
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void fs_close_custom(struct fs_file* file) {
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}
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/**
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* @fn void wbe_get_images(char*, size_t)
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* @brief Function searches filesystem for files with extention ".bmp" and ".gif" and put them
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* combined in a string that needs to be send to the frontend.
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*
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* @param[in] images_string, string that will contain the image names
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* @param[in] file_count_fs, the number of files in the filesystem
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*/
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static size_t wbe_get_images(char* images_string, size_t file_count_fs) {
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// Allocate space for the files
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llfs_file_t file_list[file_count_fs];
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size_t file_count_bmp = 0;
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size_t file_count_gif = 0;
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// Reset string
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strcpy(images_string, "");
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// Get all the ".bmp" and ".gif" files
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file_count_bmp = llfs_file_list(file_list, file_count_fs, ".bmp");
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file_count_gif = llfs_file_list(file_list + file_count_bmp, file_count_fs, ".gif");
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// Create the info string
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wbe_build_infostring(file_list, images_string, file_count_gif + file_count_bmp);
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// Debug info
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LOG_DEBUG("WBE", "Images string : %s ",images_string);
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// Return the length of the string
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return strlen(images_string);
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}
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/**
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* @fn void wbe_build_infostring(const llfs_file_t*, char*, const size_t)
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* @brief Function adds the names of the files in "file_list" and adds them in "infoStr".
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* The names are seperated by '|' characters.
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*
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* @param[in] file_list, list with files
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* @param[in] info_string, string that will contain the filenames
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* @param[in] cnt, the number of files
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*/
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static inline void wbe_build_infostring(const llfs_file_t* file_list, char* info_string, const size_t cnt) {
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// Add the filenames to the info string
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for (size_t i = 0; i < cnt; ++i) {
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strncat(info_string, file_list[i].name, strlen(file_list[i].name));
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strncat(info_string, "|", 2);
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}
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//Remove last seperator '|'
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info_string[strlen(info_string) - 1] = '\0';
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}
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void httpd_cgi_handler(struct fs_file* file, const char* uri, int num_parm, char** pc_param, char** pc_value) {
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// Variables
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uint32_t vktxt = LCD_GREEN;
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uint32_t vka = LCD_BLACK;
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// Allocate space for parameters
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char vtxt[STR_MAX]; // The sentence that we want to print on the LCD.
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char vfo[STR_MAX]; // Name of the selected image on the website.
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char s_vktxt[CLR_MAX]; // The color of the sentence. (in #RGB)
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char s_vka[CLR_MAX]; // Color of the background. (also in #RGB)
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if (strcmp("/cgi", uri) == 0) {
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for (size_t i = 0; i < num_parm; ++i) {
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// The given sentence
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if (strcmp("vtxt", pc_param[i]) == 0) {
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LOG_DEBUG("WBE", "--> %s", pc_value[i]);
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wbe_decoding_url(pc_value[i], vtxt);
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}
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// The color of the sentence
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if (strcmp("vktxt", pc_param[i]) == 0) {
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wbe_decoding_url(pc_value[i], s_vktxt);
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// Convert to hex value
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if (s_vktxt != NULL) {
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vktxt = wbe_color_value(s_vktxt);
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}
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}
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// Color of the background
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if (strcmp("vka", pc_param[i]) == 0) {
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wbe_decoding_url(pc_value[i], s_vka);
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// convert to hex value
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if (s_vka != NULL) {
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vka = wbe_color_value(s_vka);
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}
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}
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// Name of the image
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if (strcmp("vfo", pc_param[i]) == 0) {
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wbe_decoding_url(pc_value[i], vfo);
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}
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}
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// Debug info
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LOG_DEBUG("WBE", "CGI DATA : %s , %x , %x , %s", vtxt, vktxt, vka, vfo);
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// Display on LCD
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wbe_display(vtxt, vktxt, vka, vfo);
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}
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}
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/**
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* @fn void wbe_decoding_url(const char*, char*)
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* @brief The given information from the CGI parameters are URL encoded.
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* This function translates this encoded string in a readable
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* decoded string. The lengthe of "char* decoded" is at least the
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* length of "char* encoded" + 1.
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*
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* @param[in] encoded, the encoded URL string that needs to be decoded
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* @param[in] decoded, string that will contain the decoded URL.
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*/
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static void wbe_decoding_url(const char* encoded, char* decoded) {
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// Variables
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char* endptr;
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size_t decoded_index = 0;
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size_t encoded_length = strlen(encoded);
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uint32_t hex_val;
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for (size_t i = 0; i < encoded_length; ++i) {
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// If we encounter a %xx, decode it to ascii
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if ((encoded[i] == '%') && (i + 2 < encoded_length)) {
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/*
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// Decode %xx
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hex_val = (uint32_t)strtoul(&encoded[i + 1], &endptr, 16);
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// Check for conversion errors
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if (endptr == &encoded[i + 1] || *endptr != '\0') {
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strcpy(decoded, "");
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LOG_DEBUG("WBE", "URL text conversion error");
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//return;
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}
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decoded[decoded_index++] = (char)hex_val;
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*/
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// Decode %xx
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sscanf(&encoded[i + 1], "%2x", &hex_val);
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decoded[decoded_index++] = (char)hex_val;
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// Skip 2 characters
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i += 2;
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// If we encounter a +, add a space character
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} else if (encoded[i] == '+') {
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decoded[decoded_index++] = ' ';
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// If no % or +, just put what stands in 'encoded'
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} else {
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decoded[decoded_index++] = encoded[i];
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}
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}
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// Finish the string
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decoded[decoded_index] = '\0';
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}
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static uint32_t wbe_color_value(const char* rgb) {
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// Variables
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char* endptr;
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uint32_t color = LCD_BLACK;
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char argb[11] = "0xff";
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// Create argb string (also, skip the '#' char)
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strncat(argb, rgb + 1, strlen(rgb + 1));
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// Get argb value
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color = (uint32_t)strtoul(argb, &endptr, 16);
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// Check for conversion errors
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if (*endptr != '\0') {
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color = LCD_BLACK;
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LOG_DEBUG("WBE", "URL color conversion error");
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}
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return color;
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}
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void wbe_display(const char* txt, const uint32_t txt_color, const uint32_t bg_color, const char* image) {
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// Variables
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lcd_gif_t* gif;
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char* extension;
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// clear the screen
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lcd_clear_text();
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lcd_clear_images();
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// Display the text and the background
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lcd_set_bg_color_layer0(bg_color);
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lcd_display_text(txt, 10, 10, txt_color, bg_color, LCD_FONT16);
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// Get the extension of the file
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extension = llfs_get_filename_ext(image);
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// Check extension
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if (extension != NULL) {
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// Draw bmp
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if (strcmp(extension, "bmp") == 0) {
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lcd_draw_img_from_fs(image, IMG_X, IMG_Y);
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// Draw gif
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} else if (strcmp(extension, "gif") == 0) {
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gif = lcd_draw_gif_from_fs(image, IMG_X, IMG_Y);
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if (gif == NULL) {
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LOG_DEBUG("WBE", "GIF could not be drawn");
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}
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// If nothing, then draw the standard image
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} else {
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lcd_draw_img_from_fs(SD_IMG, IMG_X, IMG_Y);
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}
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// If nothing, then draw the standard image
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} else {
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lcd_draw_img_from_fs(SD_IMG, IMG_X, IMG_Y);
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}
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}
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