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Add validation of string lengths (#1718)

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Christian
2023-05-01 12:03:23 +02:00
committed by GitHub
parent 4b7d035e9e
commit 0e815c626c
9 changed files with 65 additions and 46 deletions
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Source/MQTTnet.Tests/Formatter/MqttPacketWriter_Tests.cs
+13 -3
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@@ -1,6 +1,7 @@
using System;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MQTTnet.Exceptions;
using MQTTnet.Formatter;
namespace MQTTnet.Tests.Formatter
@@ -47,23 +48,32 @@ namespace MQTTnet.Tests.Formatter
Assert.AreEqual(1234U, reader.ReadVariableByteInteger());
Assert.AreEqual(9876U, reader.ReadVariableByteInteger());
}
[TestMethod]
[ExpectedException(typeof(MqttProtocolViolationException))]
public void Throw_If_String_Too_Long()
{
var writer = new MqttBufferWriter(4096, 65535);
writer.WriteString(string.Empty.PadLeft(65536));
}
[TestMethod]
public void Write_And_Read_Multiple_Times()
{
var writer = new MqttBufferWriter(4096, 65535);
writer.WriteString("A relative short string.");
writer.WriteBinaryData(new byte[1234]);
writer.WriteBinary(new byte[1234]);
writer.WriteByte(0x01);
writer.WriteByte(0x02);
writer.WriteVariableByteInteger(5647382);
writer.WriteString("A relative short string.");
writer.WriteVariableByteInteger(8574489);
writer.WriteBinaryData(new byte[48]);
writer.WriteBinary(new byte[48]);
writer.WriteByte(2);
writer.WriteByte(0x02);
writer.WriteString("fjgffiogfhgfhoihgoireghreghreguhreguireoghreouighreouighreughreguiorehreuiohruiorehreuioghreug");
writer.WriteBinaryData(new byte[3]);
writer.WriteBinary(new byte[3]);
var readPayload = new ArraySegment<byte>(writer.GetBuffer(), 0, writer.Length).ToArray();