forked from arcbtc/LNPoS
/
lnPoSTdisplay.ino
2186 lines (1911 loc) · 49.2 KB
/
lnPoSTdisplay.ino
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#include <WiFi.h>
#include <WebServer.h>
#include <FS.h>
#include <Preferences.h>
#include <SPIFFS.h>
#include <math.h>
using WebServerClass = WebServer;
fs::SPIFFSFS &FlashFS = SPIFFS;
#define FORMAT_ON_FAIL true
#include <Keypad.h>
#include <AutoConnect.h>
#include <SPI.h>
#include <TFT_eSPI.h>
#include <Hash.h>
#include <ArduinoJson.h>
#include <stdio.h>
#include "qrcoded.h"
#include "Bitcoin.h"
#define PARAM_FILE "/elements.json"
#define KEY_FILE "/thekey.txt"
#define USB_POWER 1000 // battery percentage sentinel value to indicate USB power
//////////SET TO TRUE TO WIPE MEMORY//////////////
bool format = false;
//////////////////////////////////////////////////
// variables
String inputs;
String thePin;
String spiffing;
String nosats;
String cntr = "0";
String lnurl;
String currency;
String lncurrency;
String key;
String preparedURL;
String baseURL;
String apPassword = "ToTheMoon1"; //default WiFi AP password
String masterKey;
String lnbitsServer;
String invoice;
String baseURLPoS;
String secretPoS;
String currencyPoS;
String baseURLATM;
String secretATM;
String currencyATM;
String lnurlATMMS;
String dataIn = "0";
String noSats = "0";
String qrData;
String dataId;
String addressNo;
String pinToShow;
String decimalplaces = "2";
String amountToShow = "0";
String key_val;
String selection;
String lnurlATMPin;
const char menuItems[5][13] = { "LNPoS", "Offline PoS", "OnChain", "ATM", "Settings" };
const char currencyItems[3][5] = { "sat", "USD", "EUR" };
char decimalplacesOutput[20];
int menuItemCheck[5] = { 0, 0, 0, 0, 1 };
int menuItemNo = 0;
int randomPin;
int calNum = 1;
int sumFlag = 0;
int converted = 0;
int sleepTimer = 30; // Time in seconds before the device goes to sleep
int qrScreenBrightness = 180; // 0 = min, 255 = max
long timeOfLastInteraction = millis();
bool isSleepEnabled = true;
bool isPretendSleeping = false;
bool onchainCheck = false;
bool lnCheck = false;
bool lnurlCheck = false;
bool unConfirmed = true;
bool selected = false;
bool lnurlCheckPoS = false;
bool lnurlCheckATM = false;
double amountToShowNumber;
enum InvoiceType {
LNPOS,
LNURLPOS,
ONCHAIN,
LNURLATM,
PORTAL
};
Preferences preferences;
// custom access point pages
static const char PAGE_ELEMENTS[] PROGMEM = R"(
{
"uri": "/posconfig",
"title": "PoS Options",
"menu": true,
"element": [
{
"name": "text",
"type": "ACText",
"value": "LNPoS options",
"style": "font-family:Arial;font-size:16px;font-weight:400;color:#191970;margin-botom:15px;"
},
{
"name": "password",
"type": "ACInput",
"label": "Password for PoS AP WiFi",
"value": "ToTheMoon1"
},
{
"name": "offline",
"type": "ACText",
"value": "Onchain *optional",
"style": "font-family:Arial;font-size:16px;font-weight:400;color:#191970;margin-botom:15px;"
},
{
"name": "masterkey",
"type": "ACInput",
"label": "Master Public Key"
},
{
"name": "heading1",
"type": "ACText",
"value": "Lightning *optional",
"style": "font-family:Arial;font-size:16px;font-weight:400;color:#191970;margin-botom:15px;"
},
{
"name": "server",
"type": "ACInput",
"label": "LNbits Server"
},
{
"name": "invoice",
"type": "ACInput",
"label": "Wallet Invoice Key"
},
{
"name": "lncurrency",
"type": "ACInput",
"label": "PoS Currency. ie: EUR"
},
{
"name": "heading2",
"type": "ACText",
"value": "Offline Lightning *optional",
"style": "font-family:Arial;font-size:16px;font-weight:400;color:#191970;margin-botom:15px;"
},
{
"name": "lnurlpos",
"type": "ACInput",
"label": "LNURLPoS String"
},
{
"name": "heading3",
"type": "ACText",
"value": "Offline Lightning *optional",
"style": "font-family:Arial;font-size:16px;font-weight:400;color:#191970;margin-botom:15px;"
},
{
"name": "lnurlatm",
"type": "ACInput",
"label": "LNURLATM String"
},
{
"name": "lnurlatmms",
"type": "ACInput",
"value": "mempool.space",
"label": "mempool.space server"
},
{
"name": "lnurlatmpin",
"type": "ACInput",
"value": "878787",
"label": "LNURLATM pin String"
},
{
"name": "decimalplaces",
"type": "ACInput",
"value": "2",
"label": "Fiat decimal places"
},
{
"name": "load",
"type": "ACSubmit",
"value": "Load",
"uri": "/posconfig"
},
{
"name": "save",
"type": "ACSubmit",
"value": "Save",
"uri": "/save"
},
{
"name": "adjust_width",
"type": "ACElement",
"value": "<script type='text/javascript'>window.onload=function(){var t=document.querySelectorAll('input[]');for(i=0;i<t.length;i++){var e=t[i].getAttribute('placeholder');e&&t[i].setAttribute('size',e.length*.8)}};</script>"
}
]
}
)";
static const char PAGE_SAVE[] PROGMEM = R"(
{
"uri": "/save",
"title": "Elements",
"menu": false,
"element": [
{
"name": "caption",
"type": "ACText",
"format": "Elements have been saved to %s",
"style": "font-family:Arial;font-size:18px;font-weight:400;color:#191970"
},
{
"name": "validated",
"type": "ACText",
"style": "color:red"
},
{
"name": "echo",
"type": "ACText",
"style": "font-family:monospace;font-size:small;white-space:pre;"
},
{
"name": "ok",
"type": "ACSubmit",
"value": "OK",
"uri": "/posconfig"
}
]
}
)";
SHA256 h;
TFT_eSPI tft = TFT_eSPI();
uint16_t qrScreenBgColour = tft.color565(qrScreenBrightness, qrScreenBrightness, qrScreenBrightness);
const byte rows = 4;
const byte cols = 3;
char keys[rows][cols] = {
{ '1', '2', '3' },
{ '4', '5', '6' },
{ '7', '8', '9' },
{ '*', '0', '#' }
};
byte rowPins[rows] = { 21, 27, 26, 22 }; //connect to the row pinouts of the keypad
byte colPins[cols] = { 33, 32, 25 }; //connect to the column pinouts of the keypad
struct KeyValue {
String key;
String value;
};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, rows, cols);
int checker = 0;
char maxdig[20];
WebServerClass server;
AutoConnect portal(server);
AutoConnectConfig config;
AutoConnectAux elementsAux;
AutoConnectAux saveAux;
bool isInteger(const char *str)
{
if (*str == '-' || *str == '+')
{
str++;
}
while (*str)
{
if (!isdigit(*str))
{
return false;
}
str++;
}
return true;
}
void formatNumber(float number, int decimalplaces, char *output)
{
// Create a format string based on the decimalplaces
char formatString[10];
sprintf(formatString, "%%.%df", decimalplaces);
// Use the format string to write the number to the output buffer
sprintf(output, formatString, number);
}
void setup()
{
Serial.begin(115200);
// load screen
tft.init();
tft.setRotation(1);
tft.invertDisplay(true);
config.beginTimeout = 10000UL;
portal.join({ elementsAux, saveAux });
logo();
// load buttons
h.begin();
FlashFS.begin(FORMAT_ON_FAIL);
SPIFFS.begin(true);
if (format == true) {
SPIFFS.format();
}
getParams();
// connect to configured WiFi
Serial.println("connect to configured WiFi");
if (menuItemCheck[0])
{
preferences.begin("wifi", false); // Open Preferences with read-only
String ssid = preferences.getString("ssid", ""); // Get stored SSID
String password = preferences.getString("password", ""); // Get stored password
preferences.end();
config.autoRise = false;
if (ssid != "" && password != "")
{
Serial.println("use stored wifi configuration");
// Use stored credentials to configure the AutoConnect
config.bootUri = AC_ONBOOTURI_HOME;
portal.config(config);
portal.begin(ssid.c_str(), password.c_str(), 5000);
Serial.println("wifi has been connected");
}
portal.config(config);
portal.begin();
}
delay(2000);
}
void loop()
{
noSats = "0";
dataIn = "0";
formatNumber(0, decimalplaces.toInt(), decimalplacesOutput);
amountToShow = decimalplacesOutput;
unConfirmed = true;
key_val = "";
// check wifi status
if (menuItemCheck[0] == 1 && WiFi.status() != WL_CONNECTED)
{
menuItemCheck[0] = -1;
}
else if (menuItemCheck[0] == -1 && WiFi.status() == WL_CONNECTED)
{
menuItemCheck[0] = 1;
}
// count menu items
int menuItemsAmount = 0;
for (int i = 0; i < sizeof(menuItems) / sizeof(menuItems[0]); i++)
{
if (menuItemCheck[i] == 1)
{
menuItemsAmount++;
selection = menuItems[i];
}
}
// select menu item
while (unConfirmed)
{
if (menuItemsAmount == 1)
{
accessPoint();
}
if (menuItemsAmount > 1) {
menuLoop();
}
if (selection == "LNPoS")
{
lnMain();
}
else if (selection == "OnChain")
{
onchainMain();
}
else if (selection == "Offline PoS")
{
lnurlPoSMain();
}
else if (selection == "ATM")
{
lnurlATMMain();
}
else if (selection == "Settings")
{
accessPoint();
}
}
}
void accessPoint()
{
getParams();
pinToShow = "";
dataIn = "";
isATMMoneyPin(true);
while (unConfirmed)
{
key_val = "";
getKeypad(true, false, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
isATMMoneyPin(true);
}
if (pinToShow.length() == lnurlATMPin.length() && pinToShow != lnurlATMPin)
{
error(" WRONG PIN");
delay(1500);
pinToShow = "";
dataIn = "";
isATMMoneyPin(true);
}
else if (pinToShow == lnurlATMPin)
{
error(" SETTINGS", "HOLD 1 FOR USB", "ANY OTHER KEY FOR AP");
// general WiFi setting
config.autoReset = false;
config.autoReconnect = true;
config.reconnectInterval = 1; // 30s
config.portalTimeout = 180000;
// start portal (any key pressed on startup)
int count = 0;
while (count < 10)
{
key_val = "";
delay(200);
count++;
const char key = keypad.getKey();
if (key == '1')
{
configOverSerialPort();
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
return;
}
}
else if (key != NO_KEY)
{
// handle access point traffic
server.on("/", []()
{
String content = "<h1>LNPoS</br>Free open-source bitcoin PoS</h1>";
content += AUTOCONNECT_LINK(COG_24);
server.send(200, "text/html", content);
});
elementsAux.load(FPSTR(PAGE_ELEMENTS));
elementsAux.on([](AutoConnectAux &aux, PageArgument &arg)
{
File param = FlashFS.open(PARAM_FILE, "r");
if (param)
{
aux.loadElement(param, { "password", "masterkey", "server", "invoice", "lncurrency", "lnurlpos", "lnurlatm", "lnurlatmms", "lnurlatmpin", "decimalplaces" });
param.close();
}
if (portal.where() == "/posconfig")
{
File param = FlashFS.open(PARAM_FILE, "r");
if (param)
{
aux.loadElement(param, { "password", "masterkey", "server", "invoice", "lncurrency", "lnurlpos", "lnurlatm", "lnurlatmms", "lnurlatmpin", "decimalplaces" });
param.close();
}
}
return String();
});
saveAux.load(FPSTR(PAGE_SAVE));
saveAux.on([](AutoConnectAux &aux, PageArgument &arg)
{
aux["caption"].value = PARAM_FILE;
File param = FlashFS.open(PARAM_FILE, "w");
if (param)
{
// save as a loadable set for parameters.
elementsAux.saveElement(param, { "password", "masterkey", "server", "invoice", "lncurrency", "lnurlpos", "lnurlatm", "lnurlatmms", "lnurlatmpin", "decimalplaces" });
param.close();
// read the saved elements again to display.
param = FlashFS.open(PARAM_FILE, "r");
aux["echo"].value = param.readString();
param.close();
}
else
{
aux["echo"].value = "Filesystem failed to open.";
}
return String();
});
config.immediateStart = true;
config.ticker = true;
config.apid = "LNPoS-" + String((uint32_t)ESP.getEfuseMac(), HEX);
config.psk = apPassword;
config.menuItems = AC_MENUITEM_CONFIGNEW | AC_MENUITEM_OPENSSIDS | AC_MENUITEM_RESET;
config.title = "LNPoS";
// start access point
Serial.println("wifi ap mode");
WiFi.mode(WIFI_AP);
portalLaunch();
Serial.println("create wifi page");
config.retainPortal = true;
config.autoRise = false;
Serial.println("apply captive portal");
portal.config(config);
portal.onConnect(onConnect);
Serial.println("ready to set wifi ap");
portal.begin();
Serial.println("wifi ap already started");
config.autoRise = true;
portal.config(config);
Serial.println("waiting keyboard...");
while (true)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
unConfirmed = false;
portal.end();
config.autoRise = false;
portal.config(config);
portal.begin();
Serial.println("connect ap");
ESP.restart();
return;
}
portal.handleClient();
delay(100);
}
}
}
}
else
{
delay(100);
}
}
}
String onConnect(IPAddress &ip)
{
Preferences preferences;
preferences.begin("wifi", false); // Open Preferences with read-write
String ssid = WiFi.SSID(); // Get the connected SSID
String password = WiFi.psk(); // Get the connected password
preferences.putString("ssid", ssid);
preferences.putString("password", password);
preferences.end();
Serial.println("Credentials saved");
return String();
}
void getParams()
{
// get the saved details and store in global variables
File paramFile = FlashFS.open(PARAM_FILE, "r");
if (paramFile)
{
StaticJsonDocument<2500> doc;
DeserializationError error = deserializeJson(doc, paramFile.readString());
const JsonObject passRoot = doc[0];
const char *apPasswordChar = passRoot["value"];
const char *apNameChar = passRoot["name"];
if (String(apPasswordChar) != "" && String(apNameChar) == "password")
{
apPassword = apPasswordChar;
}
const JsonObject maRoot = doc[1];
const char *masterKeyChar = maRoot["value"];
masterKey = masterKeyChar;
if (masterKey != "")
{
menuItemCheck[2] = 1;
}
const JsonObject serverRoot = doc[2];
const char *serverChar = serverRoot["value"];
lnbitsServer = serverChar;
const JsonObject invoiceRoot = doc[3];
const char *invoiceChar = invoiceRoot["value"];
invoice = invoiceChar;
if (invoice != "")
{
menuItemCheck[0] = 1;
}
const JsonObject lncurrencyRoot = doc[4];
const char *lncurrencyChar = lncurrencyRoot["value"];
lncurrency = lncurrencyChar;
const JsonObject lnurlPoSRoot = doc[5];
const char *lnurlPoSChar = lnurlPoSRoot["value"];
const String lnurlPoS = lnurlPoSChar;
baseURLPoS = getValue(lnurlPoS, ',', 0);
secretPoS = getValue(lnurlPoS, ',', 1);
currencyPoS = getValue(lnurlPoS, ',', 2);
if (secretPoS != "")
{
menuItemCheck[1] = 1;
}
const JsonObject lnurlATMRoot = doc[6];
const char *lnurlATMChar = lnurlATMRoot["value"];
const String lnurlATM = lnurlATMChar;
baseURLATM = getValue(lnurlATM, ',', 0);
secretATM = getValue(lnurlATM, ',', 1);
currencyATM = getValue(lnurlATM, ',', 2);
if (secretATM != "")
{
menuItemCheck[3] = 1;
}
const JsonObject lnurlATMMSRoot = doc[7];
const char *lnurlATMMSChar = lnurlATMMSRoot["value"];
lnurlATMMS = lnurlATMMSChar;
const JsonObject lnurlATMPinRoot = doc[8];
const char *lnurlATMPinChar = lnurlATMPinRoot["value"];
lnurlATMPin = lnurlATMPinChar;
const JsonObject decimalplacesRoot = doc[9];
const char *decimalplacesChar = decimalplacesRoot["value"];
decimalplaces = decimalplacesChar;
}
paramFile.close();
}
// on-chain payment method
void onchainMain()
{
File file = SPIFFS.open(KEY_FILE);
if (file)
{
addressNo = file.readString();
addressNo = String(addressNo.toInt() + 1);
file.close();
file = SPIFFS.open(KEY_FILE, FILE_WRITE);
file.print(addressNo);
file.close();
}
else
{
file.close();
file = SPIFFS.open(KEY_FILE, FILE_WRITE);
addressNo = "1";
file.print(addressNo);
file.close();
}
Serial.println(addressNo);
inputScreenOnChain();
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
HDPublicKey hd(masterKey);
qrData = hd.derive(String("m/0/") + addressNo).address();
qrShowCodeOnchain(true, " *MENU #CHECK");
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
while (unConfirmed)
{
qrData = "https://" + lnurlATMMS + "/address/" + qrData;
qrShowCodeOnchain(false, " *MENU");
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
}
}
}
handleBrightnessAdjust(key_val, ONCHAIN);
}
}
}
}
void lnMain()
{
getParams();
if (!checkOnlineParams())
{
return;
}
if (lncurrency == "" || lncurrency == "default")
{
currencyLoop();
}
processing("FETCHING FIAT RATE");
if (!getSats())
{
error("FETCHING FIAT RATE FAILED");
delay(3000);
return;
}
isLNMoneyNumber(true);
while (unConfirmed)
{
key_val = "";
getKeypad(false, false, true, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
if (noSats.toInt() == 0)
{
error("ZERO SATS");
delay(3000);
isLNMoneyNumber(true);
continue;
}
// request invoice
processing("FETCHING INVOICE");
if (!getInvoice()) {
unConfirmed = false;
error("ERROR FETCHING INVOICE");
delay(3000);
break;
}
// show QR
qrShowCodeln();
// check invoice
bool isFirstRun = true;
while (unConfirmed)
{
int timer = 0;
if (!isFirstRun) {
unConfirmed = checkInvoice();
if (!unConfirmed)
{
paymentSuccess();
timer = 5000;
while (key_val != "*") {
key_val = "";
getKeypad(false, true, false, false);
if (key_val != "*") {
delay(100);
}
}
}
}
// abort on * press
while (timer < (isFirstRun ? 6000 : 2000))
{
getKeypad(false, true, false, false);
if (key_val == "*")
{
noSats = "0";
dataIn = "0";
formatNumber(0, decimalplaces.toInt(), decimalplacesOutput);
amountToShow = decimalplacesOutput;
unConfirmed = false;
timer = 5000;
break;
} else {
delay(100);
handleBrightnessAdjust(key_val, LNPOS);
key_val = "";
}
timer = timer + 100;
}
isFirstRun = false;
}
noSats = "0";
dataIn = "0";
formatNumber(0, decimalplaces.toInt(), decimalplacesOutput);
amountToShow = decimalplacesOutput;
}
else
{
delay(100);
}
}
}
void lnurlPoSMain()
{
inputs = "";
pinToShow = "";
dataIn = "";
if (!checkOfflineParams())
{
return;
}
isLNURLMoneyNumber(true);
while (unConfirmed)
{
key_val = "";
getKeypad(false, false, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
if (!makeLNURL())
{
isLNURLMoneyNumber(true);
continue;
}
qrShowCodeLNURL(" *MENU #SHOW PIN");
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "#")
{
showPin();
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
}
}
else if (key_val == "*")
{
unConfirmed = false;
}
handleBrightnessAdjust(key_val, LNURLPOS);
}
}
else
{
delay(100);
}
}
}
void lnurlATMMain()
{
pinToShow = "";
dataIn = "";
isATMMoneyPin(true);
while (unConfirmed)
{
key_val = "";
getKeypad(true, false, false, false);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
isATMMoneyPin(true);
}
if (pinToShow.length() == lnurlATMPin.length() && pinToShow != lnurlATMPin)
{
error(" WRONG PIN");
delay(1500);
pinToShow = "";
dataIn = "";
isATMMoneyPin(true);
}
else if (pinToShow == lnurlATMPin)
{
isATMMoneyNumber(true);
inputs = "";
dataIn = "";
while (unConfirmed)
{
key_val = "";
getKeypad(false, false, false, true);
if (key_val == "*")
{
unConfirmed = false;
}
else if (key_val == "#")
{
if (!makeLNURL())
{
isATMMoneyNumber(true);
continue;
}
qrShowCodeLNURL(" *MENU");
while (unConfirmed)
{
key_val = "";
getKeypad(false, true, false, false);