Enable unpack/repack of RPM containers

src/Microsoft.DotNet.Build.Tasks.Installers/Microsoft.DotNet.Build.Tasks.Installers.csproj

@@ -19,6 +19,11 @@
     <PackageReference Include="Newtonsoft.Json" />
   </ItemGroup>
 
+  <ItemGroup>
+    <InternalsVisibleTo Include="Microsoft.DotNet.SignTool" />
+    <InternalsVisibleTo Include="Microsoft.DotNet.SignTool.Tests" />
+  </ItemGroup>
+
   <ItemGroup>
     <None Include="build/**/*.*"
           Pack="true"

src/Microsoft.DotNet.Build.Tasks.Installers/src/RpmBuilder.cs

@@ -95,6 +95,23 @@ public static string GetRpmHeaderArchitecture(Architecture architecture)
             };
         }
 
+        public static string GetDotNetArchitectureFromRpmHeaderArchitecture(string rpmPackageArchitecture)
+        {
+            return rpmPackageArchitecture switch
+            {
+                "noarch" => "any",
+                "i386" => "x86",
+                "i486" => "x86",
+                "i586" => "x86",
+                "i686" => "x86",
+                "x86_64" => "x64",
+                "armv6hl" => "arm",
+                "armv7hl" => "arm",
+                "aarch64" => "arm64",
+                _ => rpmPackageArchitecture
+            };
+        }
+
         private static short GetRpmOS(OSPlatform os)
         {
             // See /usr/lib/rpm/rpmrc for the canonical OS mapping
@@ -204,8 +221,8 @@ public RpmPackage Build()
 
             foreach (var script in _scripts)
             {
-                entries.Add(new((RpmHeaderTag)Enum.Parse(typeof(RpmHeaderTag), script.Key), RpmHeaderEntryType.String, "/bin/sh"));
-                entries.Add(new((RpmHeaderTag)Enum.Parse(typeof(RpmHeaderTag), $"{script.Key}prog"), RpmHeaderEntryType.String, script.Value));
+                entries.Add(new((RpmHeaderTag)Enum.Parse(typeof(RpmHeaderTag), script.Key), RpmHeaderEntryType.String, script.Value));
+                entries.Add(new((RpmHeaderTag)Enum.Parse(typeof(RpmHeaderTag), $"{script.Key}prog"), RpmHeaderEntryType.String, "/bin/sh"));
             }
 
             MemoryStream cpioArchive = new();

src/Microsoft.DotNet.Build.Tasks.Installers/src/RpmHeaderTag.cs

@@ -31,7 +31,9 @@ public enum RpmHeaderTag
         Url = 1020,
         OperatingSystem = 1021,
         Architecture = 1022,
+        Prein = 1023,
         Postin = 1024,
+        Preun = 1025,
         Postun = 1026,
         FileSizes = 1028,
         FileModes = 1030,
@@ -55,7 +57,9 @@ public enum RpmHeaderTag
         ChangelogTimestamp = 1080,
         ChangelogName = 1081,
         ChangelogText = 1082,
+        Preinprog = 1085,
         Postinprog = 1086,
+        Preunprog = 1087,
         Postunprog = 1088,
         FileDevices = 1095,
         FileInode = 1096,

src/Microsoft.DotNet.SignTool.Tests/FakeSignTool.cs

@@ -65,6 +65,11 @@ public override bool VerifySignedDeb(TaskLoggingHelper log, string filePath)
             return true;
         }
 
+        public override bool VerifySignedRpm(TaskLoggingHelper log, string filePath)
+        {
+            return true;
+        }
+
         public override bool VerifySignedPowerShellFile(string filePath)
         {
             return true;

src/Microsoft.DotNet.SignTool.Tests/SignToolTests.cs

@@ -15,6 +15,7 @@
 using Microsoft.Build.Utilities;
 using Xunit;
 using Xunit.Abstractions;
+using Microsoft.DotNet.Build.Tasks.Installers;
 
 namespace Microsoft.DotNet.SignTool.Tests
 {
@@ -34,6 +35,7 @@ public class SignToolTests : IDisposable
             {".psc1",   new List<SignInfo>{ new SignInfo("PSCCertificate") } },
             {".dylib", new List<SignInfo>{ new SignInfo("DylibCertificate") } },
             {".deb", new List<SignInfo>{ new SignInfo("LinuxSign") } },
+            {".rpm", new List<SignInfo>{ new SignInfo("LinuxSign") } },
             {".dll",  new List<SignInfo>{ new SignInfo("Microsoft400") } }, // lgtm [cs/common-default-passwords] Safe, these are certificate names
             {".exe",  new List<SignInfo>{ new SignInfo("Microsoft400") } }, // lgtm [cs/common-default-passwords] Safe, these are certificate names
             {".msi",  new List<SignInfo>{ new SignInfo("Microsoft400") } }, // lgtm [cs/common-default-passwords] Safe, these are certificate names
@@ -447,6 +449,60 @@ private string ExtractArchiveFromDebPackage(string debianPackage, string archive
             File.WriteAllBytes(archive, ((MemoryStream)content).ToArray());
             return archive;
         }
+
+        private void ValidateProducedRpmContent(
+            string rpmPackage,
+            (string, string)[] expectedFilesOriginalHashes,
+            string[] signableFiles,
+            string originalUncompressedPayloadChecksum)
+        {
+            string tempDir = Path.Combine(_tmpDir, "verification");
+            Directory.CreateDirectory(tempDir);
+
+            string layout = Path.Combine(tempDir, "layout");
+            Directory.CreateDirectory(layout);
+
+            ZipData.ExtractRpmPayloadContents(rpmPackage, layout);
+
+            // Checks:
+            // Expected files are present
+            // Signed files have hashes different than original
+            foreach ((string targetSystemFilePath, string originalHash) in expectedFilesOriginalHashes)
+            {
+                string layoutFilePath = Path.Combine(layout, targetSystemFilePath);
+                File.Exists(layoutFilePath).Should().BeTrue();
+
+                using MD5 md5 = MD5.Create(); // lgtm [cs/weak-crypto] Azure Storage specifies use of MD5
+                using FileStream fileStream = File.OpenRead(layoutFilePath);
+                string newHash = Convert.ToHexString(md5.ComputeHash(fileStream));
+
+                if (signableFiles.Contains(targetSystemFilePath))
+                {
+                    newHash.Should().NotBe(originalHash);
+                }
+                else
+                {
+                    newHash.Should().Be(originalHash);
+                }
+            }
+
+            // Checks:
+            // Header payload digest matches the hash of the payload
+            // Header payload digest is different than the hash of the original payload
+            IReadOnlyList<RpmHeader<RpmHeaderTag>.Entry> headerEntries = ZipData.GetRpmHeaderEntries(rpmPackage);
+            string uncompressedPayloadDigest = ((string[])headerEntries.FirstOrDefault(e => e.Tag == RpmHeaderTag.UncompressedPayloadDigest).Value)[0].ToString();
+            uncompressedPayloadDigest.Should().NotBe(originalUncompressedPayloadChecksum);
+
+            using var stream = File.Open(rpmPackage, FileMode.Open);
+            using RpmPackage package = RpmPackage.Read(stream);
+            package.ArchiveStream.Seek(0, SeekOrigin.Begin);
+            using (SHA256 sha256 = SHA256.Create())
+            {
+                byte[] hash = sha256.ComputeHash(package.ArchiveStream);
+                string checksum = Convert.ToHexString(hash).ToLower();
+                checksum.Should().Be(uncompressedPayloadDigest);
+            }
+        }
 #endif
         [Fact]
         public void EmptySigningList()
@@ -1421,6 +1477,48 @@ public void CheckDebSigning()
             ValidateProducedDebContent(Path.Combine(_tmpDir, "test.deb"), expectedFilesOriginalHashes, signableFiles, expectedControlFileContent);
         }
 
+        [LinuxOnlyFact]
+        public void CheckRpmSigning()
+        {
+            // List of files to be considered for signing
+            var itemsToSign = new ITaskItem[]
+            {
+                new TaskItem(GetResourcePath("test.rpm"))
+            };
+
+            // Default signing information
+            var strongNameSignInfo = new Dictionary<string, List<SignInfo>>();
+
+            // Overriding information
+            var fileSignInfo = new Dictionary<ExplicitCertificateKey, string>();
+
+            ValidateFileSignInfos(itemsToSign, strongNameSignInfo, fileSignInfo, s_fileExtensionSignInfo, new[]
+            {
+                "File 'mscorlib.dll' TargetFramework='.NETCoreApp,Version=v10.0' Certificate='Microsoft400'",
+                "File 'test.rpm' Certificate='LinuxSign'"
+            });
+
+            ValidateGeneratedProject(itemsToSign, strongNameSignInfo, fileSignInfo, s_fileExtensionSignInfo, new[]
+            {
+$@"<FilesToSign Include=""{Uri.EscapeDataString(Path.Combine(_tmpDir, "ContainerSigning", "1", "./usr/local/bin/mscorlib.dll"))}"">
+  <Authenticode>Microsoft400</Authenticode>
+</FilesToSign>",
+$@"<FilesToSign Include=""{Uri.EscapeDataString(Path.Combine(_tmpDir, "test.rpm"))}"">
+  <Authenticode>LinuxSign</Authenticode>
+</FilesToSign>"
+            });
+
+            var expectedFilesOriginalHashes = new (string, string)[]
+            {
+                ("usr/local/bin/hello", "644981BBD6F4ED1B3CF68CD0F47981AA"),
+                ("usr/local/bin/mscorlib.dll", "B80EEBA2B8616B7C37E49B004D69BBB7")
+            };
+            string[] signableFiles = ["usr/local/bin/mscorlib.dll"];
+            string originalUncompressedPayloadChecksum = "216c2a99006d2e14d28a40c0f14a63f6462f533e89789a6f294186e0a0aad3fd";
+
+            ValidateProducedRpmContent(Path.Combine(_tmpDir, "test.rpm"), expectedFilesOriginalHashes, signableFiles, originalUncompressedPayloadChecksum);
+        }
+
         [Fact]
         public void VerifyDebIntegrity()
         {

src/Microsoft.DotNet.SignTool/src/BatchSignUtil.cs

@@ -509,6 +509,17 @@ private void VerifyCertificates(TaskLoggingHelper log)
                         log.LogError($"Deb package {fileName} must be signed with a LinuxSign certificate.");
                     }
                 }
+                else if (fileName.IsRpm())
+                {
+                    if (isInvalidEmptyCertificate)
+                    {
+                        log.LogError($"Rpm package {fileName} should have a certificate name.");
+                    }
+                    if (!IsLinuxSignCertificate(fileName.SignInfo.Certificate))
+                    {
+                        log.LogError($"Rpm package {fileName} must be signed with a LinuxSign certificate.");
+                    }
+                }
                 else if (fileName.IsNupkg())
                 {
                     if(isInvalidEmptyCertificate)
@@ -577,8 +588,27 @@ private void VerifyAfterSign(TaskLoggingHelper log, FileSignInfo file)
                 {
                     _log.LogError($"Deb package {file.FullPath} is not signed properly.");
                 }
+                else
+                {
+                    _log.LogMessage(MessageImportance.Low, $"Deb package {file.FullPath} is signed properly");
+                }
 #endif
             }
+            else if (file.IsRpm())
+            {
+                if (!RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                {
+                    _log.LogMessage(MessageImportance.Low, $"Skipping signature verification of {file.FullPath} on non-Linux platform.");
+                }
+                else if (!_signTool.VerifySignedRpm(log, file.FullPath))
+                {
+                    _log.LogError($"Rpm package {file.FullPath} is not signed properly.");
+                }
+                else
+                {
+                    _log.LogMessage(MessageImportance.Low, $"Rpm package {file.FullPath} is signed properly");
+                }
+            }
             else if (file.IsPowerShellScript())
             {
                 if (!_signTool.VerifySignedPowerShellFile(file.FullPath))

src/Microsoft.DotNet.SignTool/src/Configuration.cs

@@ -465,7 +465,19 @@ private FileSignInfo ExtractSignInfo(
                     _log.LogMessage(MessageImportance.Low, $"File {file.FullPath} is signed.");
                 }
             }
-            else if(FileSignInfo.IsPowerShellScript(file.FullPath))
+            else if (FileSignInfo.IsRpm(file.FullPath))
+            {
+                isAlreadyAuthenticodeSigned = VerifySignatures.VerifySignedRpm(_log, file.FullPath);
+                if (!isAlreadyAuthenticodeSigned)
+                {
+                    _log.LogMessage(MessageImportance.Low, $"File {file.FullPath} is not signed.");
+                }
+                else
+                {
+                    _log.LogMessage(MessageImportance.Low, $"File {file.FullPath} is signed.");
+                }
+            }
+            else if (FileSignInfo.IsPowerShellScript(file.FullPath))
             {
                 isAlreadyAuthenticodeSigned = VerifySignatures.VerifySignedPowerShellFile(file.FullPath);
                 if (!isAlreadyAuthenticodeSigned)

src/Microsoft.DotNet.SignTool/src/FileSignInfo.cs

@@ -24,6 +24,9 @@ internal readonly struct FileSignInfo
         internal static bool IsDeb(string path)
             => Path.GetExtension(path) == ".deb";
 
+        internal static bool IsRpm(string path)
+            => Path.GetExtension(path) == ".rpm";
+
         internal static bool IsPEFile(string path)
             => Path.GetExtension(path) == ".exe" || Path.GetExtension(path) == ".dll";
 
@@ -60,10 +63,12 @@ internal static bool IsPackage(string path)
             => IsVsix(path) || IsNupkg(path);
 
         internal static bool IsZipContainer(string path)
-            => IsPackage(path) || IsMPack(path) || IsZip(path) || IsTarGZip(path) || IsDeb(path);
+            => IsPackage(path) || IsMPack(path) || IsZip(path) || IsTarGZip(path) || IsDeb(path) || IsRpm(path);
 
         internal bool IsDeb() => IsDeb(FileName);
 
+        internal bool IsRpm() => IsRpm(FileName);
+
         internal bool IsPEFile() => IsPEFile(FileName);
 
         internal bool IsManaged() => ContentUtil.IsManaged(FullPath);

src/Microsoft.DotNet.SignTool/src/RealSignTool.cs

@@ -110,6 +110,11 @@ public override bool VerifySignedDeb(TaskLoggingHelper log, string filePath)
             return VerifySignatures.VerifySignedDeb(log, filePath);
         }
 
+        public override bool VerifySignedRpm(TaskLoggingHelper log, string filePath)
+        {
+            return VerifySignatures.VerifySignedRpm(log, filePath);
+        }
+
         public override bool VerifySignedPowerShellFile(string filePath)
         {
             return VerifySignatures.VerifySignedPowerShellFile(filePath);

src/Microsoft.DotNet.SignTool/src/SignTool.cs

@@ -33,6 +33,7 @@ internal SignTool(SignToolArgs args, TaskLoggingHelper log)
         public abstract bool LocalStrongNameSign(IBuildEngine buildEngine, int round, IEnumerable<FileSignInfo> files);
 
         public abstract bool VerifySignedDeb(TaskLoggingHelper log, string filePath);
+        public abstract bool VerifySignedRpm(TaskLoggingHelper log, string filePath);
         public abstract bool VerifySignedPEFile(Stream stream);
         public abstract bool VerifySignedPowerShellFile(string filePath);
         public abstract bool VerifySignedNugetFileMarker(string filePath);

src/Microsoft.DotNet.SignTool/src/SignToolConstants.cs

@@ -32,7 +32,7 @@ internal static class SignToolConstants
         /// <summary>
         /// List of known signable extensions. Copied, removing duplicates, from here:
         /// https://microsoft.sharepoint.com/teams/prss/Codesign/SitePages/Signable%20Files.aspx
-        /// ".deb" is not in the list linked above, but it is a known signable extension.
+        /// ".deb" and ".rpm" are not in the list linked above, but they are known signable extension.
         /// </summary>
         public static readonly HashSet<string> SignableExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
@@ -113,6 +113,7 @@ internal static class SignToolConstants
             ".pyd",
 
             ".deb",
+            ".rpm",
         };
 
         /// <summary>

src/Microsoft.DotNet.SignTool/src/ValidationOnlySignTool.cs

@@ -46,6 +46,9 @@ public override void RemoveStrongNameSign(string assemblyPath)
         public override bool VerifySignedDeb(TaskLoggingHelper log, string filePath)
             => true;
 
+        public override bool VerifySignedRpm(TaskLoggingHelper log, string filePath)
+            => true;
+
         public override bool VerifySignedPEFile(Stream assemblyStream)
             => true;
 

src/Microsoft.DotNet.SignTool/src/VerifySignatures.cs

@@ -82,6 +82,13 @@ internal static bool VerifySignedDeb(TaskLoggingHelper log, string filePath)
 # endif
         }
 
+        internal static bool VerifySignedRpm(TaskLoggingHelper log, string filePath)
+        {
+            // RPM signature verification is not yet implemented
+            log.LogMessage(MessageImportance.Low, $"Skipping signature verification of {filePath} - not yet implemented.");
+            return true;
+        }
+
         internal static bool VerifySignedPowerShellFile(string filePath)
         {
             return File.ReadLines(filePath).Any(line => line.IndexOf("# SIG # Begin Signature Block", StringComparison.OrdinalIgnoreCase) >= 0);