/*
WiFi Setup Functions
To setup WiFi on your Web-stick
put a file in your SD card with filename /cfg/wifi.txt
In the text file, write two lines which containing the
WiFi ssid and password, seperated by a linux new linx \n
as follows:
[WIFI SSID]
[WiFi Password]
*/
String loadWiFiInfoFromSD() {
if (SD.exists("/cfg/wifi.txt")) {
String fileContent = "";
File configFile = SD.open("/cfg/wifi.txt", FILE_READ);
if (configFile) {
while (configFile.available()) {
fileContent += char(configFile.read());
}
configFile.close();
}
return fileContent;
}
return "";
}
void splitWiFiFileContent(const String& fileContent, String& ssid, String& password) {
int newlineIndex = fileContent.indexOf('\n');
if (newlineIndex != -1) {
ssid = fileContent.substring(0, newlineIndex);
password = fileContent.substring(newlineIndex + 1);
}
}
void initWiFiConn() {
String wifiFileContent = loadWiFiInfoFromSD();
if (wifiFileContent.equals("")) {
while (1) {
Serial.println("WiFi info is not set. Please create a file in the SD card named /cfg/wifi.txt with first line as WiFi SSID and 2nd line as Password");
delay(3000);
}
}
// Split the contents into SSID and password
String ssid, password;
splitWiFiFileContent(wifiFileContent, ssid, password);
ssid.trim();
password.trim();
WiFi.begin(ssid, password);
Serial.print("Connecting to WiFi...");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(1000);
}
Serial.println(".");
Serial.println("WiFi Connected: ");
Serial.println("\n\nNetwork Configuration:");
Serial.println("----------------------");
Serial.print(" SSID: "); Serial.println(WiFi.SSID());
Serial.print(" Wifi Status: "); Serial.println(WiFi.status());
Serial.print("Wifi Strength: "); Serial.print(WiFi.RSSI()); Serial.println(" dBm");
Serial.print(" MAC: "); Serial.println(WiFi.macAddress());
Serial.print(" IP: "); Serial.println(WiFi.localIP());
Serial.print(" Subnet: "); Serial.println(WiFi.subnetMask());
Serial.print(" Gateway: "); Serial.println(WiFi.gatewayIP());
Serial.print(" DNS 1: "); Serial.println(WiFi.dnsIP(0));
Serial.print(" DNS 2: "); Serial.println(WiFi.dnsIP(1));
Serial.print(" DNS 3: "); Serial.println(WiFi.dnsIP(2));
Serial.println("----------------------");
Serial.println();
}
/*
Admin Credential Setup
For management portal functions, you will
need to setup the admin account in order to
use it. Place a text file at cfg/admin.txt
with the following information
[admin_username]
[admin_password]
Currently only 1 admin user is supported
*/
String loadAdminCredFromSD() {
if (SD.exists("/cfg/admin.txt")) {
String fileContent = "";
File configFile = SD.open("/cfg/admin.txt", FILE_READ);
if (configFile) {
while (configFile.available()) {
fileContent += char(configFile.read());
}
configFile.close();
}
return fileContent;
}
return "";
}
void splitAdminCreds(const String& fileContent, String& username, String& password) {
int newlineIndex = fileContent.indexOf('\n');
if (newlineIndex != -1) {
username = fileContent.substring(0, newlineIndex);
password = fileContent.substring(newlineIndex + 1);
}
}
void initAdminCredentials() {
String adminCredentials = loadAdminCredFromSD();
if (adminCredentials.equals("")) {
//Disable authentications on API calls
return;
}
// Split the contents into username and password
splitWiFiFileContent(adminCredentials, adminUsername, adminPassword);
adminUsername.trim();
adminPassword.trim();
Serial.println("Admin user loaded: " + adminUsername);
}
void initmDNSName() {
if (SD.exists("/cfg/mdns.txt")) {
String fileContent = "";
File configFile = SD.open("/cfg/mdns.txt", FILE_READ);
if (configFile) {
while (configFile.available()) {
fileContent += char(configFile.read());
}
configFile.close();
}
fileContent.trim();
mdnsName = fileContent;
}
}
//Load the previous login session key from database
//for resuming login session after poweroff
void initLoginSessionKey() {
String serverCookie = DBRead("auth", "cookie");
if (serverCookie != "") {
authSession = serverCookie;
}
}
/*
MIME Utils
*/
String getMime(const String& path) {
String _contentType = "text/plain";
if (path.endsWith(".html")) _contentType = "text/html";
else if (path.endsWith(".htm")) _contentType = "text/html";
else if (path.endsWith(".css")) _contentType = "text/css";
else if (path.endsWith(".json")) _contentType = "text/json";
else if (path.endsWith(".js")) _contentType = "application/javascript";
else if (path.endsWith(".png")) _contentType = "image/png";
else if (path.endsWith(".gif")) _contentType = "image/gif";
else if (path.endsWith(".jpg")) _contentType = "image/jpeg";
else if (path.endsWith(".ico")) _contentType = "image/x-icon";
else if (path.endsWith(".svg")) _contentType = "image/svg+xml";
else if (path.endsWith(".eot")) _contentType = "font/eot";
else if (path.endsWith(".woff")) _contentType = "font/woff";
else if (path.endsWith(".woff2")) _contentType = "font/woff2";
else if (path.endsWith(".ttf")) _contentType = "font/ttf";
else if (path.endsWith(".xml")) _contentType = "text/xml";
else if (path.endsWith(".pdf")) _contentType = "application/pdf";
else if (path.endsWith(".zip")) _contentType = "application/zip";
else if (path.endsWith(".gz")) _contentType = "application/x-gzip";
else if (path.endsWith(".mp3")) _contentType = "audio/mpeg";
else if (path.endsWith(".mp4")) _contentType = "video/mp4";
else if (path.endsWith(".aac")) _contentType = "audio/aac";
else if (path.endsWith(".ogg")) _contentType = "audio/ogg";
else if (path.endsWith(".wav")) _contentType = "audio/wav";
else if (path.endsWith(".m4v")) _contentType = "video/x-m4v";
else if (path.endsWith(".webm")) _contentType = "video/webm";
else _contentType = "text/plain";
return _contentType;
}
/*
Get ESP Info
*/
void printESPInfo() {
Serial.println(ESP.getBootMode());
Serial.print("ESP.getSdkVersion(); ");
Serial.println(ESP.getSdkVersion());
Serial.print("ESP.getBootVersion(); ");
Serial.println(ESP.getBootVersion());
Serial.print("ESP.getChipId(); ");
Serial.println(ESP.getChipId());
Serial.print("ESP.getFlashChipSize(); ");
Serial.println(ESP.getFlashChipSize());
Serial.print("ESP.getFlashChipRealSize(); ");
Serial.println(ESP.getFlashChipRealSize());
Serial.print("ESP.getFlashChipSizeByChipId(); ");
Serial.println(ESP.getFlashChipSizeByChipId());
Serial.print("ESP.getFlashChipId(); ");
Serial.println(ESP.getFlashChipId());
}
/*
Get SD card info
*/
uint32_t getTotalUsedSpace(const String& directory) {
uint32_t totalUsedSpace = 0;
File root = SD.open(directory);
if (root) {
while (true) {
File entry = root.openNextFile();
if (!entry) {
// No more files
break;
}
if (entry.isDirectory()) {
// Recursive call for subdirectory
totalUsedSpace += getTotalUsedSpace(directory + "/" + entry.name());
} else {
//Serial.print(entry.name());
//Serial.print(" | Size: ");
//Serial.println(humanReadableSize(entry.size()));
totalUsedSpace += entry.size();
}
entry.close();
}
root.close();
}
return totalUsedSpace;
}
//Return the total used space on SD card
long getSDCardUsedSpace() {
uint32_t totalUsedSpace = getTotalUsedSpace("/");
Serial.println("Total used space: " + humanReadableSize(totalUsedSpace));
return totalUsedSpace;
}
//Get the total SD card size
long getSDCardTotalSpace() {
Serial.println("SD card size: " + humanReadableSize(SD.size64()));
return SD.size64();
}
String humanReadableSize(const int bytes) {
if (bytes < 1024) return String(bytes) + " B";
else if (bytes < (1024 * 1024)) return String(bytes / 1024.0) + " KB";
else if (bytes < (1024 * 1024 * 1024)) return String(bytes / 1024.0 / 1024.0) + " MB";
else return String(bytes / 1024.0 / 1024.0 / 1024.0) + " GB";
}