btcpayserver/BTCPayServer/Extensions.cs
2019-03-08 23:38:00 +09:00

363 lines
14 KiB
C#

using BTCPayServer.Authentication;
using BTCPayServer.Configuration;
using Microsoft.AspNetCore.Html;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.Encodings.Web;
using NBitcoin;
using System.Threading.Tasks;
using NBXplorer;
using NBXplorer.Models;
using System.Linq;
using System.Threading;
using BTCPayServer.Services.Wallets;
using System.IO;
using BTCPayServer.Logging;
using Microsoft.Extensions.Logging;
using System.Net.WebSockets;
using BTCPayServer.Services.Invoices;
using NBitpayClient;
using BTCPayServer.Payments;
using Microsoft.AspNetCore.Identity;
using BTCPayServer.Models;
using System.Security.Claims;
using System.Globalization;
using BTCPayServer.Services;
using BTCPayServer.Data;
using Microsoft.EntityFrameworkCore.Infrastructure;
using NBXplorer.DerivationStrategy;
namespace BTCPayServer
{
public static class Extensions
{
public static string PrettyPrint(this TimeSpan expiration)
{
StringBuilder builder = new StringBuilder();
if (expiration.Days >= 1)
builder.Append(expiration.Days.ToString(CultureInfo.InvariantCulture));
if (expiration.Hours >= 1)
builder.Append(expiration.Hours.ToString("00", CultureInfo.InvariantCulture));
builder.Append($"{expiration.Minutes.ToString("00", CultureInfo.InvariantCulture)}:{expiration.Seconds.ToString("00", CultureInfo.InvariantCulture)}");
return builder.ToString();
}
public static decimal RoundUp(decimal value, int precision)
{
for (int i = 0; i < precision; i++)
{
value = value * 10m;
}
value = Math.Ceiling(value);
for (int i = 0; i < precision; i++)
{
value = value / 10m;
}
return value;
}
public static decimal RoundToSignificant(this decimal value, ref int divisibility)
{
if (value != 0m)
{
while (true)
{
var rounded = decimal.Round(value, divisibility, MidpointRounding.AwayFromZero);
if ((Math.Abs(rounded - value) / value) < 0.001m)
{
value = rounded;
break;
}
divisibility++;
}
}
return value;
}
public static PaymentMethodId GetpaymentMethodId(this InvoiceCryptoInfo info)
{
return new PaymentMethodId(info.CryptoCode, Enum.Parse<PaymentTypes>(info.PaymentType));
}
public static async Task CloseSocket(this WebSocket webSocket)
{
try
{
if (webSocket.State == WebSocketState.Open)
{
CancellationTokenSource cts = new CancellationTokenSource();
cts.CancelAfter(5000);
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing", cts.Token);
}
}
catch { }
finally { try { webSocket.Dispose(); } catch { } }
}
public static bool SupportDropColumn(this Microsoft.EntityFrameworkCore.Migrations.Migration migration, string activeProvider)
{
return activeProvider != "Microsoft.EntityFrameworkCore.Sqlite";
}
public static bool SupportDropForeignKey(this Microsoft.EntityFrameworkCore.Migrations.Migration migration, string activeProvider)
{
return activeProvider != "Microsoft.EntityFrameworkCore.Sqlite";
}
public static bool SupportDropForeignKey(this DatabaseFacade facade)
{
return facade.ProviderName != "Microsoft.EntityFrameworkCore.Sqlite";
}
public static async Task<Dictionary<uint256, TransactionResult>> GetTransactions(this BTCPayWallet client, uint256[] hashes, CancellationToken cts = default(CancellationToken))
{
hashes = hashes.Distinct().ToArray();
var transactions = hashes
.Select(async o => await client.GetTransactionAsync(o, cts))
.ToArray();
await Task.WhenAll(transactions).ConfigureAwait(false);
return transactions.Select(t => t.Result).Where(t => t != null).ToDictionary(o => o.Transaction.GetHash());
}
public static string WithTrailingSlash(this string str)
{
if (str.EndsWith("/", StringComparison.InvariantCulture))
return str;
return str + "/";
}
public static string WithStartingSlash(this string str)
{
if (str.StartsWith("/", StringComparison.InvariantCulture))
return str;
return $"/{str}";
}
public static void SetHeaderOnStarting(this HttpResponse resp, string name, string value)
{
if (resp.HasStarted)
return;
resp.OnStarting(() =>
{
SetHeader(resp, name, value);
return Task.CompletedTask;
});
}
public static void SetHeader(this HttpResponse resp, string name, string value)
{
var existing = resp.Headers[name].FirstOrDefault();
if (existing != null && value == null)
resp.Headers.Remove(name);
else
resp.Headers[name] = value;
}
public static bool IsSegwit(this DerivationStrategyBase derivationStrategyBase)
{
if (IsSegwitCore(derivationStrategyBase))
return true;
return (derivationStrategyBase is P2SHDerivationStrategy p2shStrat && IsSegwitCore(p2shStrat.Inner));
}
private static bool IsSegwitCore(DerivationStrategyBase derivationStrategyBase)
{
return (derivationStrategyBase is P2WSHDerivationStrategy) ||
(derivationStrategyBase is DirectDerivationStrategy direct) && direct.Segwit;
}
public static string GetAbsoluteRoot(this HttpRequest request)
{
return string.Concat(
request.Scheme,
"://",
request.Host.ToUriComponent(),
request.PathBase.ToUriComponent());
}
public static string GetCurrentUrl(this HttpRequest request)
{
return string.Concat(
request.Scheme,
"://",
request.Host.ToUriComponent(),
request.PathBase.ToUriComponent(),
request.Path.ToUriComponent());
}
public static string GetCurrentPath(this HttpRequest request)
{
return string.Concat(
request.PathBase.ToUriComponent(),
request.Path.ToUriComponent());
}
/// <summary>
/// If 'toto' and RootPath is 'rootpath' returns '/rootpath/toto'
/// If 'toto' and RootPath is empty returns '/toto'
/// </summary>
/// <param name="request"></param>
/// <param name="path"></param>
/// <returns></returns>
public static string GetRelativePath(this HttpRequest request, string path)
{
if (path.Length > 0 && path[0] != '/')
path = $"/{path}";
return string.Concat(
request.PathBase.ToUriComponent(),
path);
}
/// <summary>
/// If 'https://example.com/toto' returns 'https://example.com/toto'
/// If 'toto' and RootPath is 'rootpath' returns '/rootpath/toto'
/// If 'toto' and RootPath is empty returns '/toto'
/// </summary>
/// <param name="request"></param>
/// <param name="path"></param>
/// <returns></returns>
public static string GetRelativePathOrAbsolute(this HttpRequest request, string path)
{
if (!Uri.TryCreate(path, UriKind.RelativeOrAbsolute, out var uri) ||
uri.IsAbsoluteUri)
return path;
if (path.Length > 0 && path[0] != '/')
path = $"/{path}";
return string.Concat(
request.PathBase.ToUriComponent(),
path);
}
public static string GetAbsoluteUri(this HttpRequest request, string redirectUrl)
{
bool isRelative =
(redirectUrl.Length > 0 && redirectUrl[0] == '/')
|| !new Uri(redirectUrl, UriKind.RelativeOrAbsolute).IsAbsoluteUri;
return isRelative ? request.GetAbsoluteRoot() + redirectUrl : redirectUrl;
}
/// <summary>
/// Will return an absolute URL.
/// If `relativeOrAsbolute` is absolute, returns it.
/// If `relativeOrAsbolute` is relative, send absolute url based on the HOST of this request (without PathBase)
/// </summary>
/// <param name="request"></param>
/// <param name="relativeOrAbsolte"></param>
/// <returns></returns>
public static Uri GetAbsoluteUriNoPathBase(this HttpRequest request, Uri relativeOrAbsolute = null)
{
if (relativeOrAbsolute == null)
{
return new Uri(string.Concat(
request.Scheme,
"://",
request.Host.ToUriComponent()), UriKind.Absolute);
}
if (relativeOrAbsolute.IsAbsoluteUri)
return relativeOrAbsolute;
return new Uri(string.Concat(
request.Scheme,
"://",
request.Host.ToUriComponent()) + relativeOrAbsolute.ToString().WithStartingSlash(), UriKind.Absolute);
}
public static IServiceCollection ConfigureBTCPayServer(this IServiceCollection services, IConfiguration conf)
{
services.Configure<BTCPayServerOptions>(o =>
{
o.LoadArgs(conf);
});
return services;
}
public static string GetSIN(this ClaimsPrincipal principal)
{
return principal.Claims.Where(c => c.Type == Claims.SIN).Select(c => c.Value).FirstOrDefault();
}
public static string GetStoreId(this ClaimsPrincipal principal)
{
return principal.Claims.Where(c => c.Type == Claims.OwnStore).Select(c => c.Value).FirstOrDefault();
}
public static void SetIsBitpayAPI(this HttpContext ctx, bool value)
{
NBitcoin.Extensions.TryAdd(ctx.Items, "IsBitpayAPI", value);
}
public static void AddRange<T>(this HashSet<T> hashSet, IEnumerable<T> items)
{
foreach (var item in items)
{
hashSet.Add(item);
}
}
public static bool GetIsBitpayAPI(this HttpContext ctx)
{
return ctx.Items.TryGetValue("IsBitpayAPI", out object obj) &&
obj is bool b && b;
}
public static void SetBitpayAuth(this HttpContext ctx, (string Signature, String Id, String Authorization) value)
{
NBitcoin.Extensions.TryAdd(ctx.Items, "BitpayAuth", value);
}
public static async Task<T> WithCancellation<T>(this Task<T> task, CancellationToken cancellationToken)
{
using (var delayCTS = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
var waiting = Task.Delay(-1, delayCTS.Token);
var doing = task;
await Task.WhenAny(waiting, doing);
delayCTS.Cancel();
cancellationToken.ThrowIfCancellationRequested();
return await doing;
}
}
public static async Task WithCancellation(this Task task, CancellationToken cancellationToken)
{
using (var delayCTS = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
var waiting = Task.Delay(-1, delayCTS.Token);
var doing = task;
await Task.WhenAny(waiting, doing);
delayCTS.Cancel();
cancellationToken.ThrowIfCancellationRequested();
}
}
public static (string Signature, String Id, String Authorization) GetBitpayAuth(this HttpContext ctx)
{
ctx.Items.TryGetValue("BitpayAuth", out object obj);
return ((string Signature, String Id, String Authorization))obj;
}
public static StoreData GetStoreData(this HttpContext ctx)
{
return ctx.Items.TryGet("BTCPAY.STOREDATA") as StoreData;
}
public static void SetStoreData(this HttpContext ctx, StoreData storeData)
{
ctx.Items["BTCPAY.STOREDATA"] = storeData;
}
private static JsonSerializerSettings jsonSettings = new JsonSerializerSettings { ContractResolver = new CamelCasePropertyNamesContractResolver() };
public static string ToJson(this object o)
{
var res = JsonConvert.SerializeObject(o, Formatting.None, jsonSettings);
return res;
}
public static string TrimEnd(this string input, string suffixToRemove,
StringComparison comparisonType) {
if (input != null && suffixToRemove != null
&& input.EndsWith(suffixToRemove, comparisonType)) {
return input.Substring(0, input.Length - suffixToRemove.Length);
}
else return input;
}
}
}