67 lines
1.4 KiB
C#
67 lines
1.4 KiB
C#
/*
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* Copyright (c) 2024 ETH Zürich, IT Services
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Collections.Generic;
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using SafeExamBrowser.Browser.Contracts.Filters;
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using SafeExamBrowser.Settings.Browser.Filter;
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namespace SafeExamBrowser.Browser.Filters
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{
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internal class RequestFilter : IRequestFilter
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{
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private IList<IRule> allowRules;
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private IList<IRule> blockRules;
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public FilterResult Default { get; set; }
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internal RequestFilter()
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{
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allowRules = new List<IRule>();
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blockRules = new List<IRule>();
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Default = FilterResult.Block;
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}
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public void Load(IRule rule)
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{
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switch (rule.Result)
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{
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case FilterResult.Allow:
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allowRules.Add(rule);
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break;
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case FilterResult.Block:
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blockRules.Add(rule);
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break;
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default:
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throw new NotImplementedException($"Filter processing for result '{rule.Result}' is not yet implemented!");
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}
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}
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public FilterResult Process(Request request)
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{
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foreach (var rule in blockRules)
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{
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if (rule.IsMatch(request))
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{
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return FilterResult.Block;
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}
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}
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foreach (var rule in allowRules)
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{
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if (rule.IsMatch(request))
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{
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return FilterResult.Allow;
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}
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}
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return Default;
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}
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}
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}
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