added Wifi-Settings to WebUI and Config

Software/src/config.cpp

@@ -492,6 +492,78 @@ uint32_t ConfigSanityCheck(bool autocorrect)
     if (autocorrect)
       LubeConfig.CANSource = LubeConfig_defaults.CANSource;
   }
+
+  if (!validateWiFiString(LubeConfig.wifi_ap_ssid, sizeof(LubeConfig.wifi_ap_ssid)))
+  {
+    SET_BIT(setting_reset_bits, 14);
+    if (autocorrect)
+      strncpy(LubeConfig.wifi_ap_ssid, LubeConfig_defaults.wifi_ap_ssid, sizeof(LubeConfig.wifi_ap_ssid));
+  }
+
+  if (!validateWiFiString(LubeConfig.wifi_ap_password, sizeof(LubeConfig.wifi_ap_password)))
+  {
+    SET_BIT(setting_reset_bits, 15);
+    if (autocorrect)
+      strncpy(LubeConfig.wifi_ap_password, LubeConfig_defaults.wifi_ap_password, sizeof(LubeConfig.wifi_ap_password));
+  }
+
+  if (!validateWiFiString(LubeConfig.wifi_client_ssid, sizeof(LubeConfig.wifi_client_ssid)))
+  {
+    SET_BIT(setting_reset_bits, 16);
+    if (autocorrect)
+      strncpy(LubeConfig.wifi_client_ssid, LubeConfig_defaults.wifi_client_ssid, sizeof(LubeConfig.wifi_client_ssid));
+  }
+
+  if (!validateWiFiString(LubeConfig.wifi_client_password, sizeof(LubeConfig.wifi_client_password)))
+  {
+    SET_BIT(setting_reset_bits, 17);
+    if (autocorrect)
+      strncpy(LubeConfig.wifi_client_password, LubeConfig_defaults.wifi_client_password, sizeof(LubeConfig.wifi_client_password));
+  }
   // Return the bitmask indicating which settings need to be reset
   return setting_reset_bits;
-}
+}
+
+/**
+ * @brief Validates whether a given string contains only characters allowed in WiFi SSIDs and passwords.
+ *
+ * This function checks each character in the provided string to ensure
+ * that it contains only characters allowed in WiFi SSIDs and passwords.
+ * It considers characters from 'A' to 'Z', 'a' to 'z', '0' to '9', as well as
+ * the following special characters: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~
+ *
+ * @param string Pointer to the string to be validated.
+ * @param size Size of the string including the null-terminator.
+ * @return true if the string contains only allowed characters or is NULL,
+ *         false otherwise.
+ */
+bool validateWiFiString(char *string, size_t size)
+{
+  if (string == NULL)
+    return false;
+
+  for (size_t i = 0; i < size; i++)
+  {
+    char c = string[i];
+    if (c == '\0')
+    {
+      // Reached the end of the string, all characters were valid WiFi characters.
+      return true;
+    }
+    if (!((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
+          (c >= '0' && c <= '9') || c == '!' || c == '"' || c == '#' ||
+          c == '$' || c == '%' || c == '&' || c == '\'' || c == '(' ||
+          c == ')' || c == '*' || c == '+' || c == ',' || c == '-' ||
+          c == '.' || c == '/' || c == ':' || c == ';' || c == '<' ||
+          c == '=' || c == '>' || c == '?' || c == '@' || c == '[' ||
+          c == '\\' || c == ']' || c == '^' || c == '_' || c == '`' ||
+          c == '{' || c == '|' || c == '}' || c == '~'))
+    {
+      // Found a character that is not a valid WiFi character.
+      return false;
+    }
+  }
+  // If the loop completes without finding a null terminator, the string is invalid.
+  return false;
+}
+