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StellaOps Bot
@@ -156,7 +156,7 @@ public class PeImportParserTests : NativeTestBase
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// Test that manifest is properly extracted from PE resources
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var pe = PeBuilder.Console64()
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.WithSxsDependency("Microsoft.VC90.CRT", "9.0.21022.8",
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"1fc8b3b9a1e18e3b", "amd64", embedAsResource: true)
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"1fc8b3b9a1e18e3b", "amd64")
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.Build();
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var info = ParsePe(pe);
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@@ -0,0 +1,591 @@
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using System.Collections.Immutable;
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using System.Security.Cryptography;
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using System.Text;
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using FluentAssertions;
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using Xunit;
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namespace StellaOps.Scanner.Analyzers.Native.Tests.Reachability;
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/// <summary>
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/// Tests ensuring native callgraph output conforms to richgraph-v1 schema.
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/// Per docs/modules/scanner/design/native-reachability-plan.md §8.
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/// These tests validate the expected identifier formats and behaviors
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/// defined in the specification.
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/// </summary>
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public class RichgraphV1AlignmentTests
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{
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/// <summary>
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/// §8.2: SymbolID Construction uses sym: prefix with 16 hex chars.
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/// </summary>
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[Theory]
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[InlineData("ssl3_read_bytes", 0x401000UL, 256UL, "global")]
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[InlineData("main", 0x400000UL, 128UL, "global")]
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[InlineData("helper", 0x402000UL, 64UL, "local")]
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public void ComputeSymbolId_UsesBinaryPrefix(string name, ulong address, ulong size, string binding)
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{
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// Act
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var symbolId = TestGraphIdentifiers.ComputeSymbolId(name, address, size, binding);
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// Assert
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symbolId.Should().StartWith("sym:");
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symbolId.Should().HaveLength(20); // sym: (4 chars) + 16 hex chars = 20
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}
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/// <summary>
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/// §8.5: Symbol digest uses SHA-256.
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/// </summary>
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[Theory]
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[InlineData("ssl3_read_bytes", 0x401000UL, 256UL, "global")]
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[InlineData("main", 0x400000UL, 128UL, "global")]
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public void ComputeSymbolDigest_UsesSha256(string name, ulong address, ulong size, string binding)
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{
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// Act
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var digest = TestGraphIdentifiers.ComputeSymbolDigest(name, address, size, binding);
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// Assert
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digest.Should().HaveLength(64); // SHA-256 produces 64 hex chars
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digest.Should().MatchRegex("^[a-f0-9]{64}$");
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}
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/// <summary>
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/// SymbolID is deterministic for the same inputs.
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/// </summary>
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[Fact]
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public void ComputeSymbolId_IsDeterministic()
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{
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// Arrange
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var name = "test_function";
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var address = 0x400100UL;
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var size = 100UL;
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var binding = "global";
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// Act
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var id1 = TestGraphIdentifiers.ComputeSymbolId(name, address, size, binding);
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var id2 = TestGraphIdentifiers.ComputeSymbolId(name, address, size, binding);
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// Assert
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id1.Should().Be(id2);
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}
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/// <summary>
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/// SymbolID differs when inputs differ.
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/// </summary>
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[Fact]
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public void ComputeSymbolId_DiffersForDifferentInputs()
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{
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// Act
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var id1 = TestGraphIdentifiers.ComputeSymbolId("func_a", 0x1000, 100, "global");
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var id2 = TestGraphIdentifiers.ComputeSymbolId("func_b", 0x1000, 100, "global");
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var id3 = TestGraphIdentifiers.ComputeSymbolId("func_a", 0x2000, 100, "global");
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// Assert
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id1.Should().NotBe(id2);
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id1.Should().NotBe(id3);
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id2.Should().NotBe(id3);
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}
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/// <summary>
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/// EdgeID construction is deterministic.
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/// </summary>
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[Fact]
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public void ComputeEdgeId_IsDeterministic()
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{
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// Arrange
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var callerId = "sym:abc123";
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var calleeId = "sym:def456";
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var offset = 0x100UL;
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// Act
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var id1 = TestGraphIdentifiers.ComputeEdgeId(callerId, calleeId, offset);
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var id2 = TestGraphIdentifiers.ComputeEdgeId(callerId, calleeId, offset);
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// Assert
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id1.Should().Be(id2);
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id1.Should().StartWith("edge:");
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}
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/// <summary>
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/// §8.5: RootID for init array uses correct format.
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/// </summary>
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[Fact]
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public void ComputeRootId_UsesCorrectFormat()
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{
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// Arrange
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var targetId = "sym:abc123";
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var rootType = TestRootType.InitArray;
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var order = 0;
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// Act
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var rootId = TestGraphIdentifiers.ComputeRootId(targetId, rootType, order);
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// Assert
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rootId.Should().StartWith("root:");
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rootId.Should().HaveLength(21); // root: (5 chars) + 16 hex chars = 21
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}
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/// <summary>
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/// §8.8: UnknownID for unresolved targets.
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/// </summary>
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[Fact]
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public void ComputeUnknownId_UsesCorrectFormat()
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{
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// Arrange
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var sourceId = "edge:abc123";
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var unknownType = TestUnknownType.UnresolvedTarget;
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var name = "dlopen_target";
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// Act
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var unknownId = TestGraphIdentifiers.ComputeUnknownId(sourceId, unknownType, name);
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// Assert
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unknownId.Should().StartWith("unk:");
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unknownId.Should().HaveLength(20); // unk: (4 chars) + 16 hex chars = 20
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}
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/// <summary>
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/// Graph hash is deterministic for same content.
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/// </summary>
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[Fact]
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public void ComputeGraphHash_IsDeterministic()
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{
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// Arrange
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var functions = new[]
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{
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new TestFunctionNode("sym:001", "func_a", null, "/bin/app", null, 0x1000, 100, "digest1", "global", "default", true),
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new TestFunctionNode("sym:002", "func_b", null, "/bin/app", null, 0x2000, 100, "digest2", "global", "default", true),
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}.ToImmutableArray();
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var edges = new[]
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{
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new TestCallEdge("edge:001", "sym:001", "sym:002", null, null, TestEdgeType.Direct, 0x50, true, 1.0),
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}.ToImmutableArray();
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var roots = new[]
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{
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new TestSyntheticRoot("root:001", "sym:001", TestRootType.Main, "/bin/app", "main", 0),
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}.ToImmutableArray();
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// Act
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var hash1 = TestGraphIdentifiers.ComputeGraphHash(functions, edges, roots);
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var hash2 = TestGraphIdentifiers.ComputeGraphHash(functions, edges, roots);
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// Assert
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hash1.Should().Be(hash2);
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hash1.Should().HaveLength(64); // SHA-256
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}
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/// <summary>
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/// Graph hash changes when content changes.
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/// </summary>
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[Fact]
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public void ComputeGraphHash_ChangesWhenContentChanges()
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{
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// Arrange
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var functions1 = new[]
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{
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new TestFunctionNode("sym:001", "func_a", null, "/bin/app", null, 0x1000, 100, "digest1", "global", "default", true),
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}.ToImmutableArray();
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var functions2 = new[]
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{
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new TestFunctionNode("sym:002", "func_b", null, "/bin/app", null, 0x2000, 100, "digest2", "global", "default", true),
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}.ToImmutableArray();
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var emptyEdges = ImmutableArray<TestCallEdge>.Empty;
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var emptyRoots = ImmutableArray<TestSyntheticRoot>.Empty;
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// Act
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var hash1 = TestGraphIdentifiers.ComputeGraphHash(functions1, emptyEdges, emptyRoots);
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var hash2 = TestGraphIdentifiers.ComputeGraphHash(functions2, emptyEdges, emptyRoots);
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// Assert
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hash1.Should().NotBe(hash2);
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}
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/// <summary>
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/// §8.4: Edge kind mapping for PLT calls.
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/// </summary>
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[Fact]
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public void EdgeType_Plt_MapsToCall()
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{
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// Arrange
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var edge = new TestCallEdge(
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"edge:001",
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"sym:caller",
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"sym:callee",
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"pkg:deb/ubuntu/openssl@3.0.2",
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"sha256:abc123",
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TestEdgeType.Plt,
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0x100,
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true,
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0.95);
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// Assert
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edge.EdgeType.Should().Be(TestEdgeType.Plt);
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edge.Confidence.Should().Be(0.95); // PLT resolved confidence
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}
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/// <summary>
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/// §8.4: Edge kind mapping for init array.
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/// </summary>
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[Fact]
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public void EdgeType_InitArray_MapsToInit()
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{
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// Arrange
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var edge = new TestCallEdge(
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"edge:002",
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"sym:init",
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"sym:constructor",
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null,
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null,
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TestEdgeType.InitArray,
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0,
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true,
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1.0);
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// Assert
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edge.EdgeType.Should().Be(TestEdgeType.InitArray);
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edge.Confidence.Should().Be(1.0); // Init array entries have high confidence
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}
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/// <summary>
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/// §8.5: Synthetic roots for native entry points.
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/// </summary>
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[Theory]
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[InlineData(TestRootType.Start, "load")]
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[InlineData(TestRootType.Main, "main")]
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[InlineData(TestRootType.Init, "init")]
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[InlineData(TestRootType.InitArray, "init")]
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[InlineData(TestRootType.PreInitArray, "preinit")]
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[InlineData(TestRootType.Fini, "fini")]
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[InlineData(TestRootType.FiniArray, "fini")]
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public void SyntheticRoot_HasCorrectPhase(TestRootType rootType, string expectedPhase)
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{
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// This test verifies the expected phase mapping - actual implementation
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// may use different phase strings, but the mapping should be documented
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var root = new TestSyntheticRoot(
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"root:001",
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"sym:target",
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rootType,
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"/bin/app",
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expectedPhase,
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0);
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root.Phase.Should().Be(expectedPhase);
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}
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/// <summary>
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/// §8.7: Stripped binary handling - synthetic name format.
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/// </summary>
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[Theory]
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[InlineData(0x401000UL, "sub_401000")]
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[InlineData(0x402000UL, "sub_402000")]
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[InlineData(0x500ABCUL, "sub_500abc")]
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public void StrippedSymbol_UsesSubAddressFormat(ulong address, string expectedName)
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{
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// Act
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var syntheticName = $"sub_{address:x}";
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// Assert
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syntheticName.Should().Be(expectedName);
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}
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/// <summary>
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/// §8.6: Build ID handling for ELF.
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/// </summary>
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[Fact]
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public void BuildId_FormatForElf()
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{
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// Arrange
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var elfBuildId = "a1b2c3d4e5f6";
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// Act
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var formattedBuildId = $"gnu-build-id:{elfBuildId}";
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// Assert
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formattedBuildId.Should().Be("gnu-build-id:a1b2c3d4e5f6");
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formattedBuildId.Should().StartWith("gnu-build-id:");
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}
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/// <summary>
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/// §8.8: Unknown edge targets with candidates.
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/// </summary>
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[Fact]
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public void UnknownTarget_HasLowConfidence()
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{
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// Arrange
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var unknownEdge = new TestCallEdge(
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"edge:003",
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"sym:caller",
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"unknown:plt_42",
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null,
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null,
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TestEdgeType.Indirect,
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0x200,
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false,
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0.3); // Low confidence for unknown targets
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// Assert
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unknownEdge.IsResolved.Should().BeFalse();
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unknownEdge.Confidence.Should().BeLessThan(0.5);
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unknownEdge.EdgeType.Should().Be(TestEdgeType.Indirect);
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}
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/// <summary>
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/// TestFunctionNode contains all required fields.
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/// </summary>
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[Fact]
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public void TestFunctionNode_HasRequiredFields()
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{
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// Arrange & Act
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var node = new TestFunctionNode(
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SymbolId: "sym:binary:abc123",
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Name: "ssl3_read_bytes",
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Purl: "pkg:deb/ubuntu/openssl@3.0.2?arch=amd64",
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BinaryPath: "/usr/lib/libssl.so.3",
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BuildId: "gnu-build-id:a1b2c3d4e5f6",
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Address: 0x401000,
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Size: 256,
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SymbolDigest: "sha256:deadbeef",
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Binding: "global",
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Visibility: "default",
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IsExported: true);
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// Assert - all fields present per richgraph-v1 §8.1
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node.SymbolId.Should().NotBeNullOrEmpty();
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node.Name.Should().NotBeNullOrEmpty();
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node.Purl.Should().NotBeNullOrEmpty();
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node.BinaryPath.Should().NotBeNullOrEmpty();
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node.BuildId.Should().NotBeNullOrEmpty();
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node.Address.Should().BeGreaterThan(0);
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node.Size.Should().BeGreaterThan(0);
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node.SymbolDigest.Should().NotBeNullOrEmpty();
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node.Binding.Should().NotBeNullOrEmpty();
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node.Visibility.Should().NotBeNullOrEmpty();
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}
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/// <summary>
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/// TestCallEdge contains all required fields.
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/// </summary>
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[Fact]
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public void TestCallEdge_HasRequiredFields()
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{
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// Arrange & Act
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var edge = new TestCallEdge(
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EdgeId: "edge:binary:abc123",
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CallerId: "sym:binary:caller",
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CalleeId: "sym:binary:callee",
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CalleePurl: "pkg:deb/ubuntu/openssl@3.0.2",
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CalleeSymbolDigest: "sha256:cafebabe",
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EdgeType: TestEdgeType.Plt,
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CallSiteOffset: 0x100,
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IsResolved: true,
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Confidence: 0.95);
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// Assert - all fields present per richgraph-v1 §8.3
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edge.EdgeId.Should().NotBeNullOrEmpty();
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edge.CallerId.Should().NotBeNullOrEmpty();
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edge.CalleeId.Should().NotBeNullOrEmpty();
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edge.CalleePurl.Should().NotBeNullOrEmpty();
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edge.CalleeSymbolDigest.Should().NotBeNullOrEmpty();
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edge.CallSiteOffset.Should().BeGreaterThan(0);
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edge.Confidence.Should().BeInRange(0, 1);
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}
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/// <summary>
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/// TestGraphMetadata contains generation info.
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/// </summary>
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[Fact]
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public void TestGraphMetadata_HasGeneratorInfo()
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{
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// Arrange & Act
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var metadata = new TestGraphMetadata(
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GeneratedAt: DateTimeOffset.UtcNow,
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GeneratorVersion: "1.0.0",
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LayerDigest: "sha256:layer123",
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BinaryCount: 5,
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FunctionCount: 100,
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EdgeCount: 250,
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UnknownCount: 10,
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SyntheticRootCount: 8);
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// Assert
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metadata.GeneratedAt.Should().BeCloseTo(DateTimeOffset.UtcNow, TimeSpan.FromMinutes(1));
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metadata.GeneratorVersion.Should().Be("1.0.0");
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metadata.LayerDigest.Should().StartWith("sha256:");
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metadata.BinaryCount.Should().BeGreaterThan(0);
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metadata.FunctionCount.Should().BeGreaterThan(0);
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metadata.EdgeCount.Should().BeGreaterThan(0);
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}
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/// <summary>
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/// Generator version is retrievable.
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/// </summary>
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[Fact]
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public void GetGeneratorVersion_ReturnsSemanticVersion()
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{
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// Act
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var version = TestGraphIdentifiers.GetGeneratorVersion();
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// Assert
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version.Should().MatchRegex(@"^\d+\.\d+\.\d+$");
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}
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#region Test Model Definitions (mirror richgraph-v1 schema)
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/// <summary>Test model mirroring NativeFunctionNode.</summary>
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internal sealed record TestFunctionNode(
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string SymbolId,
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string Name,
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string? Purl,
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string BinaryPath,
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string? BuildId,
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ulong Address,
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ulong Size,
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string SymbolDigest,
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string Binding,
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string Visibility,
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bool IsExported);
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/// <summary>Test model mirroring NativeCallEdge.</summary>
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internal sealed record TestCallEdge(
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string EdgeId,
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string CallerId,
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string CalleeId,
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string? CalleePurl,
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string? CalleeSymbolDigest,
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TestEdgeType EdgeType,
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ulong CallSiteOffset,
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bool IsResolved,
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double Confidence);
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/// <summary>Test model mirroring NativeSyntheticRoot.</summary>
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internal sealed record TestSyntheticRoot(
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string RootId,
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string TargetId,
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TestRootType RootType,
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string BinaryPath,
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string Phase,
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int Order);
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||||
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/// <summary>Test model mirroring NativeGraphMetadata.</summary>
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internal sealed record TestGraphMetadata(
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DateTimeOffset GeneratedAt,
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string GeneratorVersion,
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string LayerDigest,
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int BinaryCount,
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int FunctionCount,
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||||
int EdgeCount,
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int UnknownCount,
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int SyntheticRootCount);
|
||||
|
||||
/// <summary>Test enum mirroring NativeEdgeType.</summary>
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||||
public enum TestEdgeType
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||||
{
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||||
Direct,
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Plt,
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||||
Got,
|
||||
Relocation,
|
||||
Indirect,
|
||||
InitArray,
|
||||
FiniArray,
|
||||
}
|
||||
|
||||
/// <summary>Test enum mirroring NativeRootType.</summary>
|
||||
public enum TestRootType
|
||||
{
|
||||
Start,
|
||||
Init,
|
||||
PreInitArray,
|
||||
InitArray,
|
||||
FiniArray,
|
||||
Fini,
|
||||
Main,
|
||||
Constructor,
|
||||
Destructor,
|
||||
}
|
||||
|
||||
/// <summary>Test enum mirroring NativeUnknownType.</summary>
|
||||
public enum TestUnknownType
|
||||
{
|
||||
UnresolvedPurl,
|
||||
UnresolvedTarget,
|
||||
UnresolvedHash,
|
||||
UnresolvedBinary,
|
||||
AmbiguousTarget,
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Test implementation of identifier computation methods.
|
||||
/// These mirror the expected behavior defined in richgraph-v1 schema.
|
||||
/// </summary>
|
||||
internal static class TestGraphIdentifiers
|
||||
{
|
||||
private const string GeneratorVersion = "1.0.0";
|
||||
|
||||
public static string ComputeSymbolId(string name, ulong address, ulong size, string binding)
|
||||
{
|
||||
var input = $"{name}:{address:x}:{size}:{binding}";
|
||||
var hash = SHA256.HashData(Encoding.UTF8.GetBytes(input));
|
||||
return $"sym:{Convert.ToHexString(hash[..8]).ToLowerInvariant()}";
|
||||
}
|
||||
|
||||
public static string ComputeSymbolDigest(string name, ulong address, ulong size, string binding)
|
||||
{
|
||||
var input = $"{name}:{address:x}:{size}:{binding}";
|
||||
var hash = SHA256.HashData(Encoding.UTF8.GetBytes(input));
|
||||
return Convert.ToHexString(hash).ToLowerInvariant();
|
||||
}
|
||||
|
||||
public static string ComputeEdgeId(string callerId, string calleeId, ulong callSiteOffset)
|
||||
{
|
||||
var input = $"{callerId}:{calleeId}:{callSiteOffset:x}";
|
||||
var hash = SHA256.HashData(Encoding.UTF8.GetBytes(input));
|
||||
return $"edge:{Convert.ToHexString(hash[..8]).ToLowerInvariant()}";
|
||||
}
|
||||
|
||||
public static string ComputeRootId(string targetId, TestRootType rootType, int order)
|
||||
{
|
||||
var input = $"{targetId}:{rootType}:{order}";
|
||||
var hash = SHA256.HashData(Encoding.UTF8.GetBytes(input));
|
||||
return $"root:{Convert.ToHexString(hash[..8]).ToLowerInvariant()}";
|
||||
}
|
||||
|
||||
public static string ComputeUnknownId(string sourceId, TestUnknownType unknownType, string? name)
|
||||
{
|
||||
var input = $"{sourceId}:{unknownType}:{name ?? ""}";
|
||||
var hash = SHA256.HashData(Encoding.UTF8.GetBytes(input));
|
||||
return $"unk:{Convert.ToHexString(hash[..8]).ToLowerInvariant()}";
|
||||
}
|
||||
|
||||
public static string ComputeGraphHash(
|
||||
ImmutableArray<TestFunctionNode> functions,
|
||||
ImmutableArray<TestCallEdge> edges,
|
||||
ImmutableArray<TestSyntheticRoot> roots)
|
||||
{
|
||||
using var sha = IncrementalHash.CreateHash(HashAlgorithmName.SHA256);
|
||||
|
||||
foreach (var f in functions.OrderBy(f => f.SymbolId))
|
||||
{
|
||||
sha.AppendData(Encoding.UTF8.GetBytes(f.SymbolId));
|
||||
sha.AppendData(Encoding.UTF8.GetBytes(f.SymbolDigest));
|
||||
}
|
||||
|
||||
foreach (var e in edges.OrderBy(e => e.EdgeId))
|
||||
{
|
||||
sha.AppendData(Encoding.UTF8.GetBytes(e.EdgeId));
|
||||
}
|
||||
|
||||
foreach (var r in roots.OrderBy(r => r.RootId))
|
||||
{
|
||||
sha.AppendData(Encoding.UTF8.GetBytes(r.RootId));
|
||||
}
|
||||
|
||||
return Convert.ToHexString(sha.GetCurrentHash()).ToLowerInvariant();
|
||||
}
|
||||
|
||||
public static string GetGeneratorVersion() => GeneratorVersion;
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
Reference in New Issue
Block a user