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|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.IO;
using System.Linq;
using System.Text;
using Xunit;
namespace System.Security.Cryptography.X509Certificates.Tests
{
/// <summary>
/// Tests that apply to the filesystem/cache portions of the X509 infrastructure on Unix implementations.
/// </summary>
[Collection("X509Filesystem")]
public static class X509FilesystemTests
{
// #9293: Our Fedora23 CI machines use NTFS for "tmphome", which causes our filesystem permissions checks to fail.
private static bool IsReliableInCI { get; } = !PlatformDetection.IsFedora23;
[Fact]
[OuterLoop]
public static void VerifyCrlCache()
{
string crlDirectory = PersistedFiles.GetUserFeatureDirectory("cryptography", "crls");
string crlFile = Path.Combine(crlDirectory,MicrosoftDotComRootCrlFilename);
Directory.CreateDirectory(crlDirectory);
File.Delete(crlFile);
using (var microsoftDotComIssuer = new X509Certificate2(TestData.MicrosoftDotComIssuerBytes))
using (var microsoftDotComRoot = new X509Certificate2(TestData.MicrosoftDotComRootBytes))
using (var unrelated = new X509Certificate2(TestData.DssCer))
using (var chainHolder = new ChainHolder())
{
X509Chain chain = chainHolder.Chain;
chain.ChainPolicy.ExtraStore.Add(unrelated);
chain.ChainPolicy.ExtraStore.Add(microsoftDotComRoot);
// The very start of the CRL period.
chain.ChainPolicy.VerificationTime = new DateTime(2015, 6, 17, 0, 0, 0, DateTimeKind.Utc);
chain.ChainPolicy.RevocationMode = X509RevocationMode.NoCheck;
chain.ChainPolicy.RevocationFlag = X509RevocationFlag.EndCertificateOnly;
chain.ChainPolicy.VerificationFlags |= X509VerificationFlags.AllowUnknownCertificateAuthority;
bool valid = chain.Build(microsoftDotComIssuer);
Assert.True(valid, "Precondition: Chain builds with no revocation checks");
int initialErrorCount = chain.ChainStatus.Length;
Assert.InRange(initialErrorCount, 0, 1);
if (initialErrorCount > 0)
{
Assert.Equal(X509ChainStatusFlags.UntrustedRoot, chain.ChainStatus[0].Status);
}
chainHolder.DisposeChainElements();
chain.ChainPolicy.RevocationMode = X509RevocationMode.Offline;
valid = chain.Build(microsoftDotComIssuer);
Assert.False(valid, "Chain should not build validly");
Assert.Equal(initialErrorCount + 1, chain.ChainStatus.Length);
Assert.Equal(X509ChainStatusFlags.RevocationStatusUnknown, chain.ChainStatus[0].Status);
File.WriteAllText(crlFile, MicrosoftDotComRootCrlPem, Encoding.ASCII);
chainHolder.DisposeChainElements();
valid = chain.Build(microsoftDotComIssuer);
Assert.True(valid, "Chain should build validly now");
Assert.Equal(initialErrorCount, chain.ChainStatus.Length);
}
}
[Fact]
public static void X509Store_OpenExisting_Fails()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
// Since the directory was explicitly deleted already, this should fail.
Assert.Throws<CryptographicException>(
() => store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly));
});
}
[Fact]
private static void X509Store_AddReadOnly()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
{
store.Open(OpenFlags.ReadOnly);
// Adding a certificate when the store is ReadOnly should fail:
Assert.Throws<CryptographicException>(() => store.Add(cert));
// Since we haven't done anything yet, we shouldn't have polluted the hard drive.
Assert.False(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
}
});
}
[Fact]
private static void X509Store_AddClosed()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
{
// Adding a certificate when the store is closed should fail:
Assert.Throws<CryptographicException>(() => store.Add(cert));
// Since we haven't done anything yet, we shouldn't have polluted the hard drive.
Assert.False(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddOne()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
{
store.Open(OpenFlags.ReadWrite);
store.Add(cert);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(1, Directory.GetFiles(storeDirectory).Length);
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(1, storeCerts.Count);
using (X509Certificate2 storeCert = storeCerts[0])
{
Assert.Equal(cert, storeCert);
Assert.NotSame(cert, storeCert);
}
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddOneAfterUpgrade()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
{
store.Open(OpenFlags.ReadOnly);
// Adding a certificate when the store is ReadOnly should fail:
Assert.Throws<CryptographicException>(() => store.Add(cert));
// Since we haven't done anything yet, we shouldn't have polluted the hard drive.
Assert.False(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
// Calling Open on an open store changes the access rights:
store.Open(OpenFlags.ReadWrite);
store.Add(cert);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(1, Directory.GetFiles(storeDirectory).Length);
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(1, storeCerts.Count);
using (X509Certificate2 storeCert = storeCerts[0])
{
Assert.Equal(cert, storeCert);
Assert.NotSame(cert, storeCert);
}
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_DowngradePermissions()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
// Ensure that ReadWrite took effect.
store.Add(certA);
store.Open(OpenFlags.ReadOnly);
// Adding a certificate when the store is ReadOnly should fail:
Assert.Throws<CryptographicException>(() => store.Add(certB));
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddAfterDispose()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certA);
// Dispose returns the store to the pre-opened state.
store.Dispose();
// Adding a certificate when the store is closed should fail:
Assert.Throws<CryptographicException>(() => store.Add(certB));
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddAndClear()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
{
store.Open(OpenFlags.ReadWrite);
store.Add(cert);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(1, Directory.GetFiles(storeDirectory).Length);
store.Remove(cert);
// The directory should still exist.
Assert.True(Directory.Exists(storeDirectory), "Store Directory Still Exists");
Assert.Equal(0, Directory.GetFiles(storeDirectory).Length);
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddDuplicate()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var cert = new X509Certificate2(TestData.MsCertificate))
using (var certClone = new X509Certificate2(cert.RawData))
{
store.Open(OpenFlags.ReadWrite);
store.Add(cert);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(1, Directory.GetFiles(storeDirectory).Length);
store.Add(certClone);
Assert.Equal(1, Directory.GetFiles(storeDirectory).Length);
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddTwo()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certA);
store.Add(certB);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(2, Directory.GetFiles(storeDirectory).Length);
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(2, storeCerts.Count);
X509Certificate2[] expectedCerts = { certA, certB };
foreach (X509Certificate2 storeCert in storeCerts)
{
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddTwo_UpgradePrivateKey()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certAPrivate = new X509Certificate2(TestData.PfxData, TestData.PfxDataPassword))
using (var certAPublic = new X509Certificate2(certAPrivate.RawData))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certAPublic);
store.Add(certB);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
string[] storeFiles = Directory.GetFiles(storeDirectory);
Assert.Equal(2, storeFiles.Length);
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(2, storeCerts.Count);
X509Certificate2[] expectedCerts = { certAPublic, certB };
foreach (X509Certificate2 storeCert in storeCerts)
{
Assert.False(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (before)");
storeCert.Dispose();
}
store.Add(certAPrivate);
// It replaces the existing file, the names should be unaffected.
Assert.Equal(storeFiles, Directory.GetFiles(storeDirectory));
storeCerts = store.Certificates;
Assert.Equal(2, storeCerts.Count);
bool foundCertA = false;
foreach (X509Certificate2 storeCert in storeCerts)
{
// The public instance and private instance are .Equal
if (storeCert.Equals(certAPublic))
{
Assert.True(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (affected cert)");
foundCertA = true;
}
else
{
Assert.False(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (other cert)");
}
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
Assert.True(foundCertA, "foundCertA");
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_AddTwo_UpgradePrivateKey_NoDowngrade()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certAPrivate = new X509Certificate2(TestData.PfxData, TestData.PfxDataPassword))
using (var certAPublic = new X509Certificate2(certAPrivate.RawData))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certAPublic);
store.Add(certB);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(2, storeCerts.Count);
X509Certificate2[] expectedCerts = { certAPublic, certB };
foreach (X509Certificate2 storeCert in storeCerts)
{
Assert.False(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (before)");
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
// Add the private (checked in X509Store_AddTwo_UpgradePrivateKey)
store.Add(certAPrivate);
// Then add the public again, which shouldn't do anything.
store.Add(certAPublic);
storeCerts = store.Certificates;
Assert.Equal(2, storeCerts.Count);
bool foundCertA = false;
foreach (X509Certificate2 storeCert in storeCerts)
{
if (storeCert.Equals(certAPublic))
{
Assert.True(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (affected cert)");
foundCertA = true;
}
else
{
Assert.False(storeCert.HasPrivateKey, "storeCert.HasPrivateKey (other cert)");
}
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
Assert.True(foundCertA, "foundCertA");
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_DistinctCollections()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certA);
store.Add(certB);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(2, Directory.GetFiles(storeDirectory).Length);
X509Certificate2Collection storeCertsA = store.Certificates;
X509Certificate2Collection storeCertsB = store.Certificates;
Assert.NotSame(storeCertsA, storeCertsB);
Assert.Equal(storeCertsA.Count, storeCertsB.Count);
foreach (X509Certificate2 collACert in storeCertsA)
{
int bIndex = storeCertsB.IndexOf(collACert);
Assert.InRange(bIndex, 0, storeCertsB.Count);
X509Certificate2 collBCert = storeCertsB[bIndex];
// Equal is implied by IndexOf working.
Assert.NotSame(collACert, collBCert);
storeCertsB.RemoveAt(bIndex);
collACert.Dispose();
collBCert.Dispose();
}
}
});
}
[ConditionalFact(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
private static void X509Store_Add4_Remove1()
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
using (var certBClone = new X509Certificate2(certB.RawData))
using (var certC = new X509Certificate2(TestData.ECDsa256Certificate))
using (var certD = new X509Certificate2(TestData.MicrosoftDotComRootBytes))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certA);
store.Add(certB);
store.Add(certC);
store.Add(certD);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
Assert.Equal(4, Directory.GetFiles(storeDirectory).Length);
X509Certificate2[] expectedCerts = { certA, certB, certC, certD };
X509Certificate2Collection storeCerts = store.Certificates;
Assert.Equal(4, storeCerts.Count);
foreach (X509Certificate2 storeCert in storeCerts)
{
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
store.Remove(certBClone);
Assert.Equal(3, Directory.GetFiles(storeDirectory).Length);
expectedCerts = new[] { certA, certC, certD };
storeCerts = store.Certificates;
Assert.Equal(3, storeCerts.Count);
foreach (X509Certificate2 storeCert in storeCerts)
{
Assert.Contains(storeCert, expectedCerts);
storeCert.Dispose();
}
}
});
}
[ConditionalTheory(nameof(IsReliableInCI))]
[OuterLoop(/* Alters user/machine state */)]
[InlineData(false)]
[InlineData(true)]
private static void X509Store_MultipleObjects(bool matchCase)
{
RunX509StoreTest(
(store, storeDirectory) =>
{
using (var certA = new X509Certificate2(TestData.MsCertificate))
using (var certB = new X509Certificate2(TestData.DssCer))
using (var certC = new X509Certificate2(TestData.ECDsa256Certificate))
using (var certD = new X509Certificate2(TestData.MicrosoftDotComRootBytes))
{
store.Open(OpenFlags.ReadWrite);
store.Add(certA);
store.Add(certB);
Assert.True(Directory.Exists(storeDirectory), "Directory.Exists(storeDirectory)");
string newName = store.Name;
if (!matchCase)
{
newName = newName.ToUpperInvariant();
Assert.NotEqual(store.Name, newName);
}
using (X509Store storeClone = new X509Store(newName, store.Location))
{
storeClone.Open(OpenFlags.ReadWrite);
AssertEqualContents(store, storeClone);
store.Add(certC);
// The object was added to store, but should show up in both objects
// after re-reading the Certificates property
AssertEqualContents(store, storeClone);
// Now add one to storeClone to prove bidirectionality.
storeClone.Add(certD);
AssertEqualContents(store, storeClone);
}
}
});
}
private static void AssertEqualContents(X509Store storeA, X509Store storeB)
{
Assert.NotSame(storeA, storeB);
using (var storeATracker = new ImportedCollection(storeA.Certificates))
using (var storeBTracker = new ImportedCollection(storeB.Certificates))
{
X509Certificate2Collection storeACerts = storeATracker.Collection;
X509Certificate2Collection storeBCerts = storeBTracker.Collection;
Assert.Equal(storeACerts.OfType<X509Certificate2>(), storeBCerts.OfType<X509Certificate2>());
}
}
private static void RunX509StoreTest(Action<X509Store, string> testAction)
{
string certStoresFeaturePath = PersistedFiles.GetUserFeatureDirectory("cryptography", "x509stores");
string storeName = "TestStore" + Guid.NewGuid().ToString("N");
string storeDirectory = Path.Combine(certStoresFeaturePath, storeName.ToLowerInvariant());
if (Directory.Exists(storeDirectory))
{
Directory.Delete(storeDirectory, true);
}
try
{
using (X509Store store = new X509Store(storeName, StoreLocation.CurrentUser))
{
testAction(store, storeDirectory);
}
}
finally
{
try
{
if (Directory.Exists(storeDirectory))
{
Directory.Delete(storeDirectory, true);
}
}
catch
{
// Don't allow any (additional?) I/O errors to propagate.
}
}
}
// `openssl crl -in [MicrosoftDotComRootCrlPem] -noout -hash`.crl
private const string MicrosoftDotComRootCrlFilename = "b204d74a.crl";
// This CRL was downloaded 2015-08-31 20:31 PDT
// It is valid from Jun 17 00:00:00 2015 GMT to Sep 30 23:59:59 2015 GMT
private const string MicrosoftDotComRootCrlPem =
@"-----BEGIN X509 CRL-----
MIICETCB+jANBgkqhkiG9w0BAQUFADCByjELMAkGA1UEBhMCVVMxFzAVBgNVBAoT
DlZlcmlTaWduLCBJbmMuMR8wHQYDVQQLExZWZXJpU2lnbiBUcnVzdCBOZXR3b3Jr
MTowOAYDVQQLEzEoYykgMjAwNiBWZXJpU2lnbiwgSW5jLiAtIEZvciBhdXRob3Jp
emVkIHVzZSBvbmx5MUUwQwYDVQQDEzxWZXJpU2lnbiBDbGFzcyAzIFB1YmxpYyBQ
cmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5IC0gRzUXDTE1MDYxNzAwMDAw
MFoXDTE1MDkzMDIzNTk1OVowDQYJKoZIhvcNAQEFBQADggEBAFxqobObEqKNSAe+
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WKo2mLw=
-----END X509 CRL-----";
}
}
|