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AfRApay.FTM: We can link cards :D

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embr 2023-02-08 15:03:16 +01:00
parent 9d5a8e2bc8
commit 32ba902784
1 changed files with 39 additions and 9 deletions
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48
AfRApay.FTM/Program.cs
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@ -2,13 +2,18 @@
using PCSC;
using PCSC.Monitoring;
using PCSC.Iso7816;
using System.Net.Http;
var rootCommand = new RootCommand("Fancy Test Machine for AfRApay");
var listReadersOption = new Option<bool>("--list-readers", "List card readers and exit");
rootCommand.Add(listReadersOption);
rootCommand.SetHandler((listReaders) => {
var webAddrOption = new Option<Uri>("--web-addr", "Base URL for AfRApay.Web");
webAddrOption.SetDefaultValue(new Uri("http://127.0.0.1:5296"));
rootCommand.Add(webAddrOption);
rootCommand.SetHandler((listReaders, webAddr) => {
using (var context = ContextFactory.Instance.Establish(SCardScope.System)) {
// We need at least one card reader or this won't work!
var readerNames = context.GetReaders();
@ -27,16 +32,22 @@ rootCommand.SetHandler((listReaders) => {
Environment.Exit(0);
}
using HttpClient httpClient = new();
httpClient.BaseAddress = webAddr;
Console.Error.WriteLine("----------------------------------------");
Console.Error.WriteLine("--- AfRApay FTM - Fancy Test Machine ---");
Console.Error.WriteLine("----------------------------------------");
Console.Error.WriteLine();
Console.Error.WriteLine("AfRApay.Web: {0}", httpClient.BaseAddress);
Console.Error.WriteLine();
Console.Error.WriteLine("Hotkeys (case insensitive):");
Console.Error.WriteLine(" [L] Link Card, instead of debiting it");
Console.Error.WriteLine(" [Esc] Cancel, return to default state");
Console.Error.WriteLine();
Console.Error.WriteLine("----------------------------------------");
// Listen for events on all connected readers.
using (var monitor = MonitorFactory.Instance.Create(SCardScope.System)) {
var state = TerminalState.Default;
@ -50,7 +61,7 @@ rootCommand.SetHandler((listReaders) => {
monitor.CardInserted += (_, args) => {
Console.WriteLine("> TAP: {0}", Convert.ToHexString(args.Atr));
var reader = new IsoReader(context, args.ReaderName, SCardShareMode.Shared, SCardProtocol.Any);
HandleTap(reader, state);
HandleTap(reader, httpClient, state);
};
monitor.CardRemoved += (_, args) => {
Console.WriteLine("< OFF");
@ -68,7 +79,7 @@ rootCommand.SetHandler((listReaders) => {
break;
case ConsoleKey.Escape:
state = TerminalState.Default;
Console.Error.WriteLine("\\ => Mode: Default"); // Hack: the \\ eats the escape character.
Console.Error.WriteLine("\b => Mode: Default"); // Hack: the \b eats the escape character.
break;
default:
Console.Error.WriteLine(" => UNRECOGNISED KEY");
@ -77,25 +88,37 @@ rootCommand.SetHandler((listReaders) => {
}
}
}
}, listReadersOption);
}, listReadersOption, webAddrOption);
return await rootCommand.InvokeAsync(args);
// Queries a card for data when one is tapped.
static void HandleTap(IsoReader reader, TerminalState state) {
static async void HandleTap(IsoReader reader, HttpClient httpClient, TerminalState state) {
// Send a PCSC pseudo-APDU to query the ISO 14443 UID.
var rsp = reader.Transmit(new CommandApdu(IsoCase.Case2Short, SCardProtocol.Any) {
var uidRsp = reader.Transmit(new CommandApdu(IsoCase.Case2Short, SCardProtocol.Any) {
CLA = 0xFF,
Instruction = InstructionCode.GetData,
P1 = 0x00,
P2 = 0x00,
});
if (!IsSucc(rsp)) {
Console.Error.WriteLine("--> Card Error: SW1={0} SW2={1}", (SW1Code)rsp.SW1, rsp.SW2);
if (!IsSucc(uidRsp)) {
Console.Error.WriteLine("--> Card Error: SW1={0} SW2={1}", (SW1Code)uidRsp.SW1, uidRsp.SW2);
return;
}
var uid = rsp.GetData();
var uid = uidRsp.GetData();
Console.WriteLine(" UID: {0}", Convert.ToHexString(uid));
// Query the backend, which endpoint depending on terminal state.
switch (state) {
case TerminalState.Default:
break;
case TerminalState.Link:
await CallGet(httpClient, String.Format("/api/card/link?card={0}", Convert.ToHexString(uid)));
break;
default:
Console.Error.WriteLine("UNKNOWN TERMINAL STATE: {0}", state);
break;
}
}
// Was the command successful?
@ -103,6 +126,13 @@ static bool IsSucc(Response rsp) {
return rsp.SW1 == (byte)SW1Code.Normal && rsp.SW2 == 0x00;
}
static async Task<string> CallGet(HttpClient client, string path) {
Console.WriteLine(" -> GET {0}", path);
var rsp = await client.GetStringAsync(path);
Console.WriteLine(" <- {0}", rsp);
return rsp;
}
// Terminal State.
enum TerminalState {
Default,