dr.web scanning backend

MalwareMultiScan.Backends/Backends/Implementations/DrWebScanBackend.cs

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+using System;
+using System.IO;
+using System.Text.RegularExpressions;
+using MalwareMultiScan.Backends.Backends.Abstracts;
+using Microsoft.Extensions.Logging;
+
+namespace MalwareMultiScan.Backends.Backends.Implementations
+{
+    public class DrWebScanBackend : AbstractLocalProcessScanBackend
+    {
+        public DrWebScanBackend(ILogger logger) : base(logger)
+        {
+        }
+        
+        public override string Id { get; } = "drweb";
+        
+        public override DateTime DatabaseLastUpdate =>
+            File.GetLastWriteTime("/var/opt/drweb.com/version/version.ini");
+
+        protected override string BackendPath { get; } = "/usr/bin/drweb-ctl";
+        
+        protected override Regex MatchRegex { get; } =
+            new Regex(@".* - infected with (?<threat>[\S ]+)", RegexOptions.Compiled | RegexOptions.Multiline);
+        
+        protected override bool ParseStdErr { get; } = false;
+        
+        protected override string GetBackendArguments(string path)
+        {
+            return $"scan {path}";
+        }
+    }
+}