244 lines
11 KiB
C#
244 lines
11 KiB
C#
// Copyright (C) 2024, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using Amazon.S3;
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using Duplicati.Library.RestAPI;
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using Duplicati.Server.WebServer.RESTMethods;
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using Duplicati.WebserverCore;
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using Microsoft.AspNetCore.Mvc;
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using System.Collections.Concurrent;
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using System.Net;
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using System.Reflection;
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using System.Text;
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using System.Xml.Linq;
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namespace Duplicati.WebserverCore
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{
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public class RESTHandlerCoreController : Controller
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{
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public const string API_URI_PATH = "/api/v1";
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public static readonly int API_URI_SEGMENTS = API_URI_PATH.Split(new char[] { '/' }).Length;
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private readonly Dictionary<string, IRESTMethod> _modules = new Dictionary<string, IRESTMethod>(StringComparer.OrdinalIgnoreCase);
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public RESTHandlerCoreController(IEnumerable<IRESTMethod> restMethods)
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{
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Console.WriteLine("Loaded controller!");
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//FIXME: Why no methods?
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foreach (var method in restMethods)
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{
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var t = method.GetType();
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_modules.Add(t.Name.ToLowerInvariant(), method);
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}
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}
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[Route(API_URI_PATH + "/{module?}/{**key}")]
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[AcceptVerbs("GET", "POST", "PUT", "DELETE", "PATCH")]
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public async System.Threading.Tasks.Task Index(string? module, string? key)
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{
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module = (module != null && module != "") ? module : "help";
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var method = Request.Method;
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var ci = ParseRequestCulture(Request.Headers.Accept);
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var info = new RequestInfo(new LegacyHttpRequestShim(Request), new LegacyHttpResponseShim(Response), new LegacyHttpSessionShim());
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using (Library.Localization.LocalizationService.TemporaryContext(ci))
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{
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try
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{
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if (ci != null)
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Response.Headers.Add("Content-Language", ci.Name);
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IRESTMethod mod;
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_modules.TryGetValue(module, out mod);
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if (mod == null)
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{
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Response.StatusCode = (int)HttpStatusCode.NotFound;
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await Response.Body.WriteAsync(Encoding.UTF8.GetBytes("No such module"));
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return;
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}
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else if (method == "GET" && mod is IRESTMethodGET get)
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{
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//if (info.Request.Form != HttpServer.HttpForm.EmptyForm)
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//{
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// if (info.Request.QueryString == HttpServer.HttpInput.Empty)
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// {
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// var r = info.Request.GetType().GetField("_queryString", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
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// r.SetValue(info.Request, new HttpServer.HttpInput("formdata"));
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// }
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// foreach (HttpServer.HttpInputItem v in info.Request.Form)
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// if (!info.Request.QueryString.Contains(v.Name))
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// info.Request.QueryString.Add(v.Name, v.Value);
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//}
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get.GET(key, info);
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}
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else if (method == "PUT" && mod is IRESTMethodPUT put)
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put.PUT(key, info);
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else if (method == "POST" && mod is IRESTMethodPOST post)
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{
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//if (info.Request.Form == HttpServer.HttpForm.EmptyForm || info.Request.Form == HttpServer.HttpInput.Empty)
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//{
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// var r = info.Request.GetType().GetMethod("AssignForm", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance, null, new Type[] { typeof(HttpServer.HttpForm) }, null);
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// r.Invoke(info.Request, new object[] { new HttpServer.HttpForm(info.Request.QueryString) });
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//}
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//else
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//{
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// foreach (HttpServer.HttpInputItem v in info.Request.QueryString)
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// if (!info.Request.Form.Contains(v.Name))
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// info.Request.Form.Add(v.Name, v.Value);
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//}
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post.POST(key, info);
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}
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else if (method == "DELETE" && mod is IRESTMethodDELETE delete)
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delete.DELETE(key, info);
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else if (method == "PATCH" && mod is IRESTMethodPATCH patch)
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patch.PATCH(key, info);
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else
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{
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Response.StatusCode = (int)HttpStatusCode.MethodNotAllowed;
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await Response.Body.WriteAsync(Encoding.UTF8.GetBytes("Method is not allowed"));
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return;
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}
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}
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catch (Exception ex)
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{
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FIXMEGlobal.DataConnection.LogError("", string.Format("Request for {0} gave error", Request.Path), ex);
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Console.WriteLine(ex);
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try
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{
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var wex = ex;
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while (wex is System.Reflection.TargetInvocationException && wex.InnerException != wex && wex.InnerException != null)
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wex = wex.InnerException;
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Response.StatusCode = (int)HttpStatusCode.InternalServerError;
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await Response.Body.WriteAsync(Encoding.UTF8.GetBytes(
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wex.Message
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#if DEBUG
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+ "\n" + wex.StackTrace
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#endif
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));
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return;
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}
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catch (Exception flex)
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{
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FIXMEGlobal.DataConnection.LogError("", "Reporting error gave error", flex);
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}
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}
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}
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}
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private static readonly ConcurrentDictionary<string, System.Globalization.CultureInfo> _cultureCache = new ConcurrentDictionary<string, System.Globalization.CultureInfo>(StringComparer.OrdinalIgnoreCase);
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private static System.Globalization.CultureInfo ParseRequestCulture(string acceptheader)
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{
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acceptheader = acceptheader ?? string.Empty;
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// Lock-free read
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System.Globalization.CultureInfo ci;
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if (_cultureCache.TryGetValue(acceptheader, out ci))
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return ci;
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// Lock-free assignment, we might compute the value twice
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return _cultureCache[acceptheader] =
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// Parse headers like "Accept-Language: da, en-gb;q=0.8, en;q=0.7"
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acceptheader
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.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries)
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.Select(x =>
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{
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var opts = x.Split(new[] { ";" }, StringSplitOptions.RemoveEmptyEntries);
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var lang = opts.FirstOrDefault();
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var weight =
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opts.Where(y => y.StartsWith("q=", StringComparison.OrdinalIgnoreCase))
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.Select(y =>
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{
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float f;
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float.TryParse(y.Substring(2), System.Globalization.NumberStyles.Float, System.Globalization.CultureInfo.InvariantCulture, out f);
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return f;
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}).FirstOrDefault();
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// Set the default weight=1
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if (weight <= 0.001 && weight >= 0)
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weight = 1;
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return new KeyValuePair<string, float>(lang, weight);
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})
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// Handle priority
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.OrderByDescending(x => x.Value)
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.Select(x => x.Key)
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.Distinct()
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// Filter invalid/unsupported items
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.Where(x => !string.IsNullOrWhiteSpace(x) && Library.Localization.LocalizationService.ParseCulture(x) != null)
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.Select(x => Library.Localization.LocalizationService.ParseCulture(x))
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// And get the first that works
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.FirstOrDefault(System.Globalization.CultureInfo.InvariantCulture);
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}
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}
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public static class RESTHandlerCoreExtensions
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{
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public static IHostBuilder UseRESTHandlers(
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this IHostBuilder builder)
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{
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var lst =
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from n in typeof(IRESTMethod).Assembly.GetTypes()
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where
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n.Namespace == typeof(IRESTMethod).Namespace
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&&
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typeof(IRESTMethod).IsAssignableFrom(n)
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&&
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!n.IsAbstract
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&&
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!n.IsInterface
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select n;
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builder.ConfigureServices(services =>
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{
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foreach (var t in lst)
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{
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services.AddSingleton<IRESTMethod>((IRESTMethod?)Activator.CreateInstance(t) ?? throw new NullReferenceException("RestMethod " + nameof(t) + " is null"));
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}
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});
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return builder;
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}
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//public static IEndpointRouteBuilder UseRESTHandlerEndpoints(this IEndpointRouteBuilder builder)
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//{
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// builder.MapFallback(async (HttpContext context) => {
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// await System.Threading.Tasks.Task.Delay(1);
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// // context.
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// //TODO: Register controllers without this middleware ?
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// });
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// return builder;
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//}
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}
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}
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