| | | 1 | | using System; |
| | | 2 | | using System.Collections.Generic; |
| | | 3 | | using System.Linq; |
| | | 4 | | using Jellyfin.Extensions; |
| | | 5 | | using Microsoft.AspNetCore.Http; |
| | | 6 | | using Microsoft.AspNetCore.Http.Features; |
| | | 7 | | using Microsoft.Extensions.Primitives; |
| | | 8 | | |
| | | 9 | | namespace Jellyfin.Api.Middleware; |
| | | 10 | | |
| | | 11 | | /// <summary> |
| | | 12 | | /// Defines the <see cref="UrlDecodeQueryFeature"/>. |
| | | 13 | | /// </summary> |
| | | 14 | | public class UrlDecodeQueryFeature : IQueryFeature |
| | | 15 | | { |
| | | 16 | | private IQueryCollection? _store; |
| | | 17 | | |
| | | 18 | | /// <summary> |
| | | 19 | | /// Initializes a new instance of the <see cref="UrlDecodeQueryFeature"/> class. |
| | | 20 | | /// </summary> |
| | | 21 | | /// <param name="feature">The <see cref="IQueryFeature"/> instance.</param> |
| | | 22 | | public UrlDecodeQueryFeature(IQueryFeature feature) |
| | | 23 | | { |
| | 171 | 24 | | Query = feature.Query; |
| | 171 | 25 | | } |
| | | 26 | | |
| | | 27 | | /// <summary> |
| | | 28 | | /// Gets or sets a value indicating the url decoded <see cref="IQueryCollection"/>. |
| | | 29 | | /// </summary> |
| | | 30 | | public IQueryCollection Query |
| | | 31 | | { |
| | | 32 | | get |
| | | 33 | | { |
| | 121 | 34 | | return _store ?? QueryCollection.Empty; |
| | | 35 | | } |
| | | 36 | | |
| | | 37 | | set |
| | | 38 | | { |
| | | 39 | | // Only interested in where the querystring is encoded which shows up as one key with nothing in the value. |
| | 171 | 40 | | if (value.Count != 1) |
| | | 41 | | { |
| | 150 | 42 | | _store = value; |
| | 150 | 43 | | return; |
| | | 44 | | } |
| | | 45 | | |
| | | 46 | | // Encoded querystrings have no value, so don't process anything if a value is present. |
| | 21 | 47 | | var (key, stringValues) = value.First(); |
| | 21 | 48 | | if (!string.IsNullOrEmpty(stringValues)) |
| | | 49 | | { |
| | 16 | 50 | | _store = value; |
| | 16 | 51 | | return; |
| | | 52 | | } |
| | | 53 | | |
| | 5 | 54 | | if (!key.Contains('=', StringComparison.Ordinal)) |
| | | 55 | | { |
| | 1 | 56 | | _store = value; |
| | 1 | 57 | | return; |
| | | 58 | | } |
| | | 59 | | |
| | 4 | 60 | | var pairs = new Dictionary<string, StringValues>(); |
| | 24 | 61 | | foreach (var pair in key.SpanSplit('&')) |
| | | 62 | | { |
| | 8 | 63 | | var i = pair.IndexOf('='); |
| | 8 | 64 | | if (i == -1) |
| | | 65 | | { |
| | | 66 | | // encoded is an equals. |
| | | 67 | | // We use TryAdd so duplicate keys get ignored |
| | 0 | 68 | | pairs.TryAdd(pair.ToString(), StringValues.Empty); |
| | 0 | 69 | | continue; |
| | | 70 | | } |
| | | 71 | | |
| | 8 | 72 | | var k = pair[..i].ToString(); |
| | 8 | 73 | | var v = pair[(i + 1)..].ToString(); |
| | 8 | 74 | | if (!pairs.TryAdd(k, new StringValues(v))) |
| | | 75 | | { |
| | 2 | 76 | | pairs[k] = StringValues.Concat(pairs[k], v); |
| | | 77 | | } |
| | | 78 | | } |
| | | 79 | | |
| | 4 | 80 | | _store = new QueryCollection(pairs); |
| | 4 | 81 | | } |
| | | 82 | | } |
| | | 83 | | } |