WordClockESP/lib/framework/SettingValue.cpp

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Settings placeholder substitution (#164) * Use text formatting for default factory values to produce dynamic names. Header files contains duplicates of factory values defined in factory_settings.ini Removed them to simplify the code. * Use text formatting for default factory values to produce dynamic names. Header files contains duplicates of factory values defined in factory_settings.ini Removed them to simplify the code. * Configured the WiFi host name to contain the device id by default * Removed possibility to use placeholders for FACTORY_WIFI_SSID factory setting. * Update README.md Updated documentation * Use text formatting for default factory values to produce dynamic names. Header files contains duplicates of factory values defined in factory_settings.ini Removed them to simplify the code. * Configured the WiFi host name to contain the device id by default * Removed possibility to use placeholders for FACTORY_WIFI_SSID factory setting. * Added a space to the end of the file to comply project code style * fix typos clang formatting use 2 spaces in ini files use ${platform}-${chip_id} for hostname put chip id in brackets in AP SSID * restore (and update) factory setting ifndefs - this is so src can be built without an exaustive set build-time defines - standardize ordering of defines: factory settings, paths, config * format and modify comment * escape spaces in pio defines experiment with removing $'s from our format strings (they are being substituted with empty values by pio) * fix formatting in readme rename FactoryValue to SettingValue, put in own header give example of direct usage of FactorySetting::format in README.md * auto format * use hash to delimit placeholders * fix factory_settings.ini * remove flash string helpers * format ini file * use MAC address instead of chip id for properly unique identifier * use lower case hex encoding for unique id use chip id and unique id for more secure secret * fix comment * Use random values for JWT secret Arduino uses the ESP random number generator for "true random" numbers on both esp32 and esp8266 This makes a better JWT secret and may be useful for other factory defaults too In addition a modification has been made to force the FSPersistance to save the file if applying defaults * Don't use spaces in default AP SSID * restore helpful comment in factory_settings.ini fix default defines Co-authored-by: kasedy <kasedy@gmail.com>
2021-01-03 17:00:36 +00:00
#include <SettingValue.h>
namespace SettingValue {
#ifdef ESP32
const String PLATFORM = "esp32";
#elif defined(ESP8266)
const String PLATFORM = "esp8266";
#endif
/**
* Returns a new string after replacing each instance of the pattern with a value generated by calling the provided
* callback.
*/
String replaceEach(String value, String pattern, String (*generateReplacement)()) {
while (true) {
int index = value.indexOf(pattern);
if (index == -1) {
break;
}
value = value.substring(0, index) + generateReplacement() + value.substring(index + pattern.length());
}
return value;
}
/**
* Generates a random number, encoded as a hex string.
*/
String getRandom() {
return String(random(2147483647), HEX);
}
/**
* Uses the station's MAC address to create a unique id for each device.
*/
String getUniqueId() {
uint8_t mac[6];
#ifdef ESP32
esp_read_mac(mac, ESP_MAC_WIFI_STA);
#elif defined(ESP8266)
wifi_get_macaddr(STATION_IF, mac);
#endif
char macStr[13] = {0};
sprintf(macStr, "%02x%02x%02x%02x%02x%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return String(macStr);
}
String format(String value) {
value = replaceEach(value, "#{random}", getRandom);
value.replace("#{unique_id}", getUniqueId());
value.replace("#{platform}", PLATFORM);
return value;
}
}; // end namespace SettingValue