519 lines
17 KiB
C#
519 lines
17 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Net;
|
|
using System.Text;
|
|
using MediaBrowser.Model.Services;
|
|
using Microsoft.AspNetCore.Http;
|
|
using Microsoft.AspNetCore.Http.Extensions;
|
|
using Microsoft.Extensions.Logging;
|
|
using Microsoft.Extensions.Primitives;
|
|
using Microsoft.Net.Http.Headers;
|
|
using IHttpFile = MediaBrowser.Model.Services.IHttpFile;
|
|
using IHttpRequest = MediaBrowser.Model.Services.IHttpRequest;
|
|
using IResponse = MediaBrowser.Model.Services.IResponse;
|
|
|
|
namespace Emby.Server.Implementations.SocketSharp
|
|
{
|
|
public partial class WebSocketSharpRequest : IHttpRequest
|
|
{
|
|
private readonly HttpRequest request;
|
|
|
|
public WebSocketSharpRequest(HttpRequest httpContext, HttpResponse response, string operationName, ILogger logger)
|
|
{
|
|
this.OperationName = operationName;
|
|
this.request = httpContext;
|
|
this.Response = new WebSocketSharpResponse(logger, response);
|
|
|
|
// HandlerFactoryPath = GetHandlerPathIfAny(UrlPrefixes[0]);
|
|
}
|
|
|
|
public HttpRequest HttpRequest => request;
|
|
|
|
public IResponse Response { get; }
|
|
|
|
public string OperationName { get; set; }
|
|
|
|
public object Dto { get; set; }
|
|
|
|
public string RawUrl => request.GetEncodedPathAndQuery();
|
|
|
|
public string AbsoluteUri => request.GetDisplayUrl().TrimEnd('/');
|
|
|
|
public string XForwardedFor
|
|
=> StringValues.IsNullOrEmpty(request.Headers["X-Forwarded-For"]) ? null : request.Headers["X-Forwarded-For"].ToString();
|
|
|
|
public int? XForwardedPort
|
|
=> StringValues.IsNullOrEmpty(request.Headers["X-Forwarded-Port"]) ? (int?)null : int.Parse(request.Headers["X-Forwarded-Port"], CultureInfo.InvariantCulture);
|
|
|
|
public string XForwardedProtocol => StringValues.IsNullOrEmpty(request.Headers["X-Forwarded-Proto"]) ? null : request.Headers["X-Forwarded-Proto"].ToString();
|
|
|
|
public string XRealIp => StringValues.IsNullOrEmpty(request.Headers["X-Real-IP"]) ? null : request.Headers["X-Real-IP"].ToString();
|
|
|
|
private string remoteIp;
|
|
public string RemoteIp
|
|
{
|
|
get
|
|
{
|
|
if (remoteIp != null)
|
|
{
|
|
return remoteIp;
|
|
}
|
|
|
|
var temp = CheckBadChars(XForwardedFor.AsSpan());
|
|
if (temp.Length != 0)
|
|
{
|
|
return remoteIp = temp.ToString();
|
|
}
|
|
|
|
temp = CheckBadChars(XRealIp.AsSpan());
|
|
if (temp.Length != 0)
|
|
{
|
|
return remoteIp = NormalizeIp(temp).ToString();
|
|
}
|
|
|
|
return remoteIp = NormalizeIp(request.HttpContext.Connection.RemoteIpAddress.ToString().AsSpan()).ToString();
|
|
}
|
|
}
|
|
|
|
private static readonly char[] HttpTrimCharacters = new char[] { (char)0x09, (char)0xA, (char)0xB, (char)0xC, (char)0xD, (char)0x20 };
|
|
|
|
// CheckBadChars - throws on invalid chars to be not found in header name/value
|
|
internal static ReadOnlySpan<char> CheckBadChars(ReadOnlySpan<char> name)
|
|
{
|
|
if (name.Length == 0)
|
|
{
|
|
return name;
|
|
}
|
|
|
|
// VALUE check
|
|
// Trim spaces from both ends
|
|
name = name.Trim(HttpTrimCharacters);
|
|
|
|
// First, check for correctly formed multi-line value
|
|
// Second, check for absence of CTL characters
|
|
int crlf = 0;
|
|
for (int i = 0; i < name.Length; ++i)
|
|
{
|
|
char c = (char)(0x000000ff & (uint)name[i]);
|
|
switch (crlf)
|
|
{
|
|
case 0:
|
|
{
|
|
if (c == '\r')
|
|
{
|
|
crlf = 1;
|
|
}
|
|
else if (c == '\n')
|
|
{
|
|
// Technically this is bad HTTP. But it would be a breaking change to throw here.
|
|
// Is there an exploit?
|
|
crlf = 2;
|
|
}
|
|
else if (c == 127 || (c < ' ' && c != '\t'))
|
|
{
|
|
throw new ArgumentException("net_WebHeaderInvalidControlChars", nameof(name));
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case 1:
|
|
{
|
|
if (c == '\n')
|
|
{
|
|
crlf = 2;
|
|
break;
|
|
}
|
|
|
|
throw new ArgumentException("net_WebHeaderInvalidCRLFChars", nameof(name));
|
|
}
|
|
|
|
case 2:
|
|
{
|
|
if (c == ' ' || c == '\t')
|
|
{
|
|
crlf = 0;
|
|
break;
|
|
}
|
|
|
|
throw new ArgumentException("net_WebHeaderInvalidCRLFChars", nameof(name));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (crlf != 0)
|
|
{
|
|
throw new ArgumentException("net_WebHeaderInvalidCRLFChars", nameof(name));
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
private ReadOnlySpan<char> NormalizeIp(ReadOnlySpan<char> ip)
|
|
{
|
|
if (ip.Length != 0 && !ip.IsWhiteSpace())
|
|
{
|
|
// Handle ipv4 mapped to ipv6
|
|
const string srch = "::ffff:";
|
|
var index = ip.IndexOf(srch.AsSpan(), StringComparison.OrdinalIgnoreCase);
|
|
if (index == 0)
|
|
{
|
|
ip = ip.Slice(srch.Length);
|
|
}
|
|
}
|
|
|
|
return ip;
|
|
}
|
|
|
|
public string[] AcceptTypes => request.Headers.GetCommaSeparatedValues(HeaderNames.Accept);
|
|
|
|
private Dictionary<string, object> items;
|
|
public Dictionary<string, object> Items => items ?? (items = new Dictionary<string, object>());
|
|
|
|
private string responseContentType;
|
|
public string ResponseContentType
|
|
{
|
|
get =>
|
|
responseContentType
|
|
?? (responseContentType = GetResponseContentType(HttpRequest));
|
|
set => this.responseContentType = value;
|
|
}
|
|
|
|
public const string FormUrlEncoded = "application/x-www-form-urlencoded";
|
|
public const string MultiPartFormData = "multipart/form-data";
|
|
public static string GetResponseContentType(HttpRequest httpReq)
|
|
{
|
|
var specifiedContentType = GetQueryStringContentType(httpReq);
|
|
if (!string.IsNullOrEmpty(specifiedContentType))
|
|
{
|
|
return specifiedContentType;
|
|
}
|
|
|
|
const string serverDefaultContentType = "application/json";
|
|
|
|
var acceptContentTypes = httpReq.Headers.GetCommaSeparatedValues(HeaderNames.Accept);
|
|
string defaultContentType = null;
|
|
if (HasAnyOfContentTypes(httpReq, FormUrlEncoded, MultiPartFormData))
|
|
{
|
|
defaultContentType = serverDefaultContentType;
|
|
}
|
|
|
|
var acceptsAnything = false;
|
|
var hasDefaultContentType = defaultContentType != null;
|
|
if (acceptContentTypes != null)
|
|
{
|
|
foreach (var acceptsType in acceptContentTypes)
|
|
{
|
|
// TODO: @bond move to Span when Span.Split lands
|
|
// https://github.com/dotnet/corefx/issues/26528
|
|
var contentType = acceptsType?.Split(';')[0].Trim();
|
|
acceptsAnything = contentType.Equals("*/*", StringComparison.OrdinalIgnoreCase);
|
|
|
|
if (acceptsAnything)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (acceptsAnything)
|
|
{
|
|
if (hasDefaultContentType)
|
|
{
|
|
return defaultContentType;
|
|
}
|
|
else
|
|
{
|
|
return serverDefaultContentType;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (acceptContentTypes == null && httpReq.ContentType == Soap11)
|
|
{
|
|
return Soap11;
|
|
}
|
|
|
|
// We could also send a '406 Not Acceptable', but this is allowed also
|
|
return serverDefaultContentType;
|
|
}
|
|
|
|
public const string Soap11 = "text/xml; charset=utf-8";
|
|
|
|
public static bool HasAnyOfContentTypes(HttpRequest request, params string[] contentTypes)
|
|
{
|
|
if (contentTypes == null || request.ContentType == null)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
foreach (var contentType in contentTypes)
|
|
{
|
|
if (IsContentType(request, contentType))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public static bool IsContentType(HttpRequest request, string contentType)
|
|
{
|
|
return request.ContentType.StartsWith(contentType, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
|
|
private static string GetQueryStringContentType(HttpRequest httpReq)
|
|
{
|
|
ReadOnlySpan<char> format = httpReq.Query["format"].ToString().AsSpan();
|
|
if (format == null)
|
|
{
|
|
const int formatMaxLength = 4;
|
|
ReadOnlySpan<char> pi = httpReq.Path.ToString().AsSpan();
|
|
if (pi == null || pi.Length <= formatMaxLength)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (pi[0] == '/')
|
|
{
|
|
pi = pi.Slice(1);
|
|
}
|
|
|
|
format = LeftPart(pi, '/');
|
|
if (format.Length > formatMaxLength)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
format = LeftPart(format, '.');
|
|
if (format.Contains("json".AsSpan(), StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "application/json";
|
|
}
|
|
else if (format.Contains("xml".AsSpan(), StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "application/xml";
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
public static ReadOnlySpan<char> LeftPart(ReadOnlySpan<char> strVal, char needle)
|
|
{
|
|
if (strVal == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
var pos = strVal.IndexOf(needle);
|
|
return pos == -1 ? strVal : strVal.Slice(0, pos);
|
|
}
|
|
|
|
public static string HandlerFactoryPath;
|
|
|
|
private string pathInfo;
|
|
public string PathInfo
|
|
{
|
|
get
|
|
{
|
|
if (this.pathInfo == null)
|
|
{
|
|
var mode = HandlerFactoryPath;
|
|
|
|
var pos = RawUrl.IndexOf("?", StringComparison.Ordinal);
|
|
if (pos != -1)
|
|
{
|
|
var path = RawUrl.Substring(0, pos);
|
|
this.pathInfo = GetPathInfo(
|
|
path,
|
|
mode,
|
|
mode ?? string.Empty);
|
|
}
|
|
else
|
|
{
|
|
this.pathInfo = RawUrl;
|
|
}
|
|
|
|
this.pathInfo = WebUtility.UrlDecode(pathInfo);
|
|
this.pathInfo = NormalizePathInfo(pathInfo, mode).ToString();
|
|
}
|
|
|
|
return this.pathInfo;
|
|
}
|
|
}
|
|
|
|
private static string GetPathInfo(string fullPath, string mode, string appPath)
|
|
{
|
|
var pathInfo = ResolvePathInfoFromMappedPath(fullPath, mode);
|
|
if (!string.IsNullOrEmpty(pathInfo))
|
|
{
|
|
return pathInfo;
|
|
}
|
|
|
|
// Wildcard mode relies on this to work out the handlerPath
|
|
pathInfo = ResolvePathInfoFromMappedPath(fullPath, appPath);
|
|
if (!string.IsNullOrEmpty(pathInfo))
|
|
{
|
|
return pathInfo;
|
|
}
|
|
|
|
return fullPath;
|
|
}
|
|
|
|
private static string ResolvePathInfoFromMappedPath(string fullPath, string mappedPathRoot)
|
|
{
|
|
if (mappedPathRoot == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
var sbPathInfo = new StringBuilder();
|
|
var fullPathParts = fullPath.Split('/');
|
|
var mappedPathRootParts = mappedPathRoot.Split('/');
|
|
var fullPathIndexOffset = mappedPathRootParts.Length - 1;
|
|
var pathRootFound = false;
|
|
|
|
for (var fullPathIndex = 0; fullPathIndex < fullPathParts.Length; fullPathIndex++)
|
|
{
|
|
if (pathRootFound)
|
|
{
|
|
sbPathInfo.Append("/" + fullPathParts[fullPathIndex]);
|
|
}
|
|
else if (fullPathIndex - fullPathIndexOffset >= 0)
|
|
{
|
|
pathRootFound = true;
|
|
for (var mappedPathRootIndex = 0; mappedPathRootIndex < mappedPathRootParts.Length; mappedPathRootIndex++)
|
|
{
|
|
if (!string.Equals(fullPathParts[fullPathIndex - fullPathIndexOffset + mappedPathRootIndex], mappedPathRootParts[mappedPathRootIndex], StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
pathRootFound = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!pathRootFound)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
return sbPathInfo.Length > 1 ? sbPathInfo.ToString().TrimEnd('/') : "/";
|
|
}
|
|
|
|
public string UserAgent => request.Headers[HeaderNames.UserAgent];
|
|
|
|
public IHeaderDictionary Headers => request.Headers;
|
|
|
|
public IQueryCollection QueryString => request.Query;
|
|
|
|
public bool IsLocal => string.Equals(request.HttpContext.Connection.LocalIpAddress.ToString(), request.HttpContext.Connection.RemoteIpAddress.ToString());
|
|
|
|
private string httpMethod;
|
|
public string HttpMethod =>
|
|
httpMethod
|
|
?? (httpMethod = request.Method);
|
|
|
|
public string Verb => HttpMethod;
|
|
|
|
public string ContentType => request.ContentType;
|
|
|
|
private Encoding ContentEncoding
|
|
{
|
|
get
|
|
{
|
|
// TODO is this necessary?
|
|
if (UserAgent != null && CultureInfo.InvariantCulture.CompareInfo.IsPrefix(UserAgent, "UP"))
|
|
{
|
|
string postDataCharset = Headers["x-up-devcap-post-charset"];
|
|
if (!string.IsNullOrEmpty(postDataCharset))
|
|
{
|
|
try
|
|
{
|
|
return Encoding.GetEncoding(postDataCharset);
|
|
}
|
|
catch (ArgumentException)
|
|
{
|
|
}
|
|
}
|
|
}
|
|
|
|
return request.GetTypedHeaders().ContentType.Encoding ?? Encoding.UTF8;
|
|
}
|
|
}
|
|
|
|
public Uri UrlReferrer => request.GetTypedHeaders().Referer;
|
|
|
|
public static Encoding GetEncoding(string contentTypeHeader)
|
|
{
|
|
var param = GetParameter(contentTypeHeader.AsSpan(), "charset=");
|
|
if (param == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
try
|
|
{
|
|
return Encoding.GetEncoding(param);
|
|
}
|
|
catch (ArgumentException)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public Stream InputStream => request.Body;
|
|
|
|
public long ContentLength => request.ContentLength ?? 0;
|
|
|
|
private IHttpFile[] httpFiles;
|
|
public IHttpFile[] Files
|
|
{
|
|
get
|
|
{
|
|
if (httpFiles == null)
|
|
{
|
|
if (files == null)
|
|
{
|
|
return httpFiles = Array.Empty<IHttpFile>();
|
|
}
|
|
|
|
httpFiles = new IHttpFile[files.Count];
|
|
var i = 0;
|
|
foreach (var pair in files)
|
|
{
|
|
var reqFile = pair.Value;
|
|
httpFiles[i] = new HttpFile
|
|
{
|
|
ContentType = reqFile.ContentType,
|
|
ContentLength = reqFile.ContentLength,
|
|
FileName = reqFile.FileName,
|
|
InputStream = reqFile.InputStream,
|
|
};
|
|
i++;
|
|
}
|
|
}
|
|
|
|
return httpFiles;
|
|
}
|
|
}
|
|
|
|
public static ReadOnlySpan<char> NormalizePathInfo(string pathInfo, string handlerPath)
|
|
{
|
|
if (handlerPath != null)
|
|
{
|
|
var trimmed = pathInfo.AsSpan().TrimStart('/');
|
|
if (trimmed.StartsWith(handlerPath.AsSpan(), StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return trimmed.Slice(handlerPath.Length).ToString().AsSpan();
|
|
}
|
|
}
|
|
|
|
return pathInfo.AsSpan();
|
|
}
|
|
}
|
|
}
|