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328 lines
10 KiB
C#
328 lines
10 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Net;
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using System.Linq;
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using System.Text;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Model.Services;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Http.Extensions;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Primitives;
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using Microsoft.Net.Http.Headers;
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using IHttpFile = MediaBrowser.Model.Services.IHttpFile;
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using IHttpRequest = MediaBrowser.Model.Services.IHttpRequest;
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using IResponse = MediaBrowser.Model.Services.IResponse;
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namespace Emby.Server.Implementations.SocketSharp
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{
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public partial class WebSocketSharpRequest : IHttpRequest
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{
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private readonly HttpRequest request;
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public WebSocketSharpRequest(HttpRequest httpContext, HttpResponse response, string operationName, ILogger logger)
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{
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this.OperationName = operationName;
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this.request = httpContext;
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this.Response = new WebSocketSharpResponse(logger, response);
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}
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public HttpRequest HttpRequest => request;
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public IResponse Response { get; }
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public string OperationName { get; set; }
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public object Dto { get; set; }
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public string RawUrl => request.GetEncodedPathAndQuery();
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public string AbsoluteUri => request.GetDisplayUrl().TrimEnd('/');
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// Header[name] returns "" when undefined
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private string GetHeader(string name) => request.Headers[name].ToString();
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private string remoteIp;
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public string RemoteIp
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{
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get
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{
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if (remoteIp != null)
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{
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return remoteIp;
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}
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IPAddress ip;
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// "Real" remote ip might be in X-Forwarded-For of X-Real-Ip
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// (if the server is behind a reverse proxy for example)
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if (!IPAddress.TryParse(GetHeader(CustomHeaderNames.XForwardedFor), out ip))
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{
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if (!IPAddress.TryParse(GetHeader(CustomHeaderNames.XRealIP), out ip))
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{
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ip = request.HttpContext.Connection.RemoteIpAddress;
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}
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}
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return remoteIp = NormalizeIp(ip).ToString();
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}
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}
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private static IPAddress NormalizeIp(IPAddress ip)
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{
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if (ip.IsIPv4MappedToIPv6)
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{
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return ip.MapToIPv4();
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}
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return ip;
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}
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public string[] AcceptTypes => request.Headers.GetCommaSeparatedValues(HeaderNames.Accept);
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private Dictionary<string, object> items;
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public Dictionary<string, object> Items => items ?? (items = new Dictionary<string, object>());
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private string responseContentType;
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public string ResponseContentType
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{
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get =>
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responseContentType
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?? (responseContentType = GetResponseContentType(HttpRequest));
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set => this.responseContentType = value;
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}
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public const string FormUrlEncoded = "application/x-www-form-urlencoded";
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public const string MultiPartFormData = "multipart/form-data";
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public static string GetResponseContentType(HttpRequest httpReq)
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{
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var specifiedContentType = GetQueryStringContentType(httpReq);
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if (!string.IsNullOrEmpty(specifiedContentType))
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{
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return specifiedContentType;
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}
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const string serverDefaultContentType = "application/json";
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var acceptContentTypes = httpReq.Headers.GetCommaSeparatedValues(HeaderNames.Accept);
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string defaultContentType = null;
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if (HasAnyOfContentTypes(httpReq, FormUrlEncoded, MultiPartFormData))
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{
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defaultContentType = serverDefaultContentType;
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}
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var acceptsAnything = false;
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var hasDefaultContentType = defaultContentType != null;
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if (acceptContentTypes != null)
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{
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foreach (var acceptsType in acceptContentTypes)
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{
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// TODO: @bond move to Span when Span.Split lands
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// https://github.com/dotnet/corefx/issues/26528
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var contentType = acceptsType?.Split(';')[0].Trim();
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acceptsAnything = contentType.Equals("*/*", StringComparison.OrdinalIgnoreCase);
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if (acceptsAnything)
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{
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break;
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}
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}
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if (acceptsAnything)
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{
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if (hasDefaultContentType)
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{
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return defaultContentType;
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}
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else
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{
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return serverDefaultContentType;
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}
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}
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}
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if (acceptContentTypes == null && httpReq.ContentType == Soap11)
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{
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return Soap11;
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}
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// We could also send a '406 Not Acceptable', but this is allowed also
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return serverDefaultContentType;
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}
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public const string Soap11 = "text/xml; charset=utf-8";
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public static bool HasAnyOfContentTypes(HttpRequest request, params string[] contentTypes)
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{
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if (contentTypes == null || request.ContentType == null)
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{
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return false;
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}
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foreach (var contentType in contentTypes)
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{
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if (IsContentType(request, contentType))
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{
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return true;
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}
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}
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return false;
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}
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public static bool IsContentType(HttpRequest request, string contentType)
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{
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return request.ContentType.StartsWith(contentType, StringComparison.OrdinalIgnoreCase);
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}
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private static string GetQueryStringContentType(HttpRequest httpReq)
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{
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ReadOnlySpan<char> format = httpReq.Query["format"].ToString().AsSpan();
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if (format == null)
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{
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const int formatMaxLength = 4;
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ReadOnlySpan<char> pi = httpReq.Path.ToString().AsSpan();
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if (pi == null || pi.Length <= formatMaxLength)
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{
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return null;
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}
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if (pi[0] == '/')
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{
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pi = pi.Slice(1);
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}
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format = LeftPart(pi, '/');
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if (format.Length > formatMaxLength)
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{
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return null;
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}
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}
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format = LeftPart(format, '.');
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if (format.Contains("json".AsSpan(), StringComparison.OrdinalIgnoreCase))
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{
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return "application/json";
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}
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else if (format.Contains("xml".AsSpan(), StringComparison.OrdinalIgnoreCase))
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{
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return "application/xml";
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}
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return null;
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}
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public static ReadOnlySpan<char> LeftPart(ReadOnlySpan<char> strVal, char needle)
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{
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if (strVal == null)
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{
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return null;
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}
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var pos = strVal.IndexOf(needle);
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return pos == -1 ? strVal : strVal.Slice(0, pos);
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}
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public string PathInfo => this.request.Path.Value;
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public string UserAgent => request.Headers[HeaderNames.UserAgent];
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public IHeaderDictionary Headers => request.Headers;
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public IQueryCollection QueryString => request.Query;
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public bool IsLocal => string.Equals(request.HttpContext.Connection.LocalIpAddress.ToString(), request.HttpContext.Connection.RemoteIpAddress.ToString());
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private string httpMethod;
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public string HttpMethod =>
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httpMethod
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?? (httpMethod = request.Method);
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public string Verb => HttpMethod;
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public string ContentType => request.ContentType;
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private Encoding ContentEncoding
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{
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get
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{
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// TODO is this necessary?
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if (UserAgent != null && CultureInfo.InvariantCulture.CompareInfo.IsPrefix(UserAgent, "UP"))
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{
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string postDataCharset = Headers["x-up-devcap-post-charset"];
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if (!string.IsNullOrEmpty(postDataCharset))
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{
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try
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{
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return Encoding.GetEncoding(postDataCharset);
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}
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catch (ArgumentException)
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{
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}
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}
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}
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return request.GetTypedHeaders().ContentType.Encoding ?? Encoding.UTF8;
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}
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}
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public Uri UrlReferrer => request.GetTypedHeaders().Referer;
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public static Encoding GetEncoding(string contentTypeHeader)
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{
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var param = GetParameter(contentTypeHeader.AsSpan(), "charset=");
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if (param == null)
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{
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return null;
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}
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try
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{
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return Encoding.GetEncoding(param);
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}
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catch (ArgumentException)
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{
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return null;
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}
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}
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public Stream InputStream => request.Body;
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public long ContentLength => request.ContentLength ?? 0;
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private IHttpFile[] httpFiles;
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public IHttpFile[] Files
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{
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get
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{
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if (httpFiles != null)
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{
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return httpFiles;
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}
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if (files == null)
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{
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return httpFiles = Array.Empty<IHttpFile>();
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}
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var values = files.Values;
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httpFiles = new IHttpFile[values.Count];
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for (int i = 0; i < values.Count; i++)
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{
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var reqFile = values.ElementAt(i);
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httpFiles[i] = new HttpFile
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{
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ContentType = reqFile.ContentType,
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ContentLength = reqFile.ContentLength,
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FileName = reqFile.FileName,
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InputStream = reqFile.InputStream,
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};
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}
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return httpFiles;
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}
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}
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}
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}
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