Adding upstream version 9.0.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

4 files changed, 695 insertions, 0 deletions

diff --git a/modules/packages/nuget/metadata.go b/modules/packages/nuget/metadata.go
new file mode 100644
index 0000000..1e98ddf
--- /dev/null
+++ b/modules/packages/nuget/metadata.go
@@ -0,0 +1,239 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package nuget
+
+import (
+	"archive/zip"
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/validation"
+
+	"github.com/hashicorp/go-version"
+)
+
+var (
+	// ErrMissingNuspecFile indicates a missing Nuspec file
+	ErrMissingNuspecFile = util.NewInvalidArgumentErrorf("Nuspec file is missing")
+	// ErrNuspecFileTooLarge indicates a Nuspec file which is too large
+	ErrNuspecFileTooLarge = util.NewInvalidArgumentErrorf("Nuspec file is too large")
+	// ErrNuspecInvalidID indicates an invalid id in the Nuspec file
+	ErrNuspecInvalidID = util.NewInvalidArgumentErrorf("Nuspec file contains an invalid id")
+	// ErrNuspecInvalidVersion indicates an invalid version in the Nuspec file
+	ErrNuspecInvalidVersion = util.NewInvalidArgumentErrorf("Nuspec file contains an invalid version")
+)
+
+// PackageType specifies the package type the metadata describes
+type PackageType int
+
+const (
+	// DependencyPackage represents a package (*.nupkg)
+	DependencyPackage PackageType = iota + 1
+	// SymbolsPackage represents a symbol package (*.snupkg)
+	SymbolsPackage
+
+	PropertySymbolID = "nuget.symbol.id"
+)
+
+var idmatch = regexp.MustCompile(`\A\w+(?:[.-]\w+)*\z`)
+
+const maxNuspecFileSize = 3 * 1024 * 1024
+
+// Package represents a Nuget package
+type Package struct {
+	PackageType   PackageType
+	ID            string
+	Version       string
+	Metadata      *Metadata
+	NuspecContent *bytes.Buffer
+}
+
+// Metadata represents the metadata of a Nuget package
+type Metadata struct {
+	Description              string                  `json:"description,omitempty"`
+	ReleaseNotes             string                  `json:"release_notes,omitempty"`
+	Readme                   string                  `json:"readme,omitempty"`
+	Authors                  string                  `json:"authors,omitempty"`
+	ProjectURL               string                  `json:"project_url,omitempty"`
+	RepositoryURL            string                  `json:"repository_url,omitempty"`
+	RequireLicenseAcceptance bool                    `json:"require_license_acceptance"`
+	Dependencies             map[string][]Dependency `json:"dependencies,omitempty"`
+}
+
+// Dependency represents a dependency of a Nuget package
+type Dependency struct {
+	ID      string `json:"id"`
+	Version string `json:"version"`
+}
+
+// https://learn.microsoft.com/en-us/nuget/reference/nuspec
+type nuspecPackage struct {
+	Metadata struct {
+		ID                       string `xml:"id"`
+		Version                  string `xml:"version"`
+		Authors                  string `xml:"authors"`
+		RequireLicenseAcceptance bool   `xml:"requireLicenseAcceptance"`
+		ProjectURL               string `xml:"projectUrl"`
+		Description              string `xml:"description"`
+		ReleaseNotes             string `xml:"releaseNotes"`
+		Readme                   string `xml:"readme"`
+		PackageTypes             struct {
+			PackageType []struct {
+				Name string `xml:"name,attr"`
+			} `xml:"packageType"`
+		} `xml:"packageTypes"`
+		Repository struct {
+			URL string `xml:"url,attr"`
+		} `xml:"repository"`
+		Dependencies struct {
+			Dependency []struct {
+				ID      string `xml:"id,attr"`
+				Version string `xml:"version,attr"`
+				Exclude string `xml:"exclude,attr"`
+			} `xml:"dependency"`
+			Group []struct {
+				TargetFramework string `xml:"targetFramework,attr"`
+				Dependency      []struct {
+					ID      string `xml:"id,attr"`
+					Version string `xml:"version,attr"`
+					Exclude string `xml:"exclude,attr"`
+				} `xml:"dependency"`
+			} `xml:"group"`
+		} `xml:"dependencies"`
+	} `xml:"metadata"`
+}
+
+// ParsePackageMetaData parses the metadata of a Nuget package file
+func ParsePackageMetaData(r io.ReaderAt, size int64) (*Package, error) {
+	archive, err := zip.NewReader(r, size)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, file := range archive.File {
+		if filepath.Dir(file.Name) != "." {
+			continue
+		}
+		if strings.HasSuffix(strings.ToLower(file.Name), ".nuspec") {
+			if file.UncompressedSize64 > maxNuspecFileSize {
+				return nil, ErrNuspecFileTooLarge
+			}
+			f, err := archive.Open(file.Name)
+			if err != nil {
+				return nil, err
+			}
+			defer f.Close()
+
+			return ParseNuspecMetaData(archive, f)
+		}
+	}
+	return nil, ErrMissingNuspecFile
+}
+
+// ParseNuspecMetaData parses a Nuspec file to retrieve the metadata of a Nuget package
+func ParseNuspecMetaData(archive *zip.Reader, r io.Reader) (*Package, error) {
+	var nuspecBuf bytes.Buffer
+	var p nuspecPackage
+	if err := xml.NewDecoder(io.TeeReader(r, &nuspecBuf)).Decode(&p); err != nil {
+		return nil, err
+	}
+
+	if !idmatch.MatchString(p.Metadata.ID) {
+		return nil, ErrNuspecInvalidID
+	}
+
+	v, err := version.NewSemver(p.Metadata.Version)
+	if err != nil {
+		return nil, ErrNuspecInvalidVersion
+	}
+
+	if !validation.IsValidURL(p.Metadata.ProjectURL) {
+		p.Metadata.ProjectURL = ""
+	}
+
+	packageType := DependencyPackage
+	for _, pt := range p.Metadata.PackageTypes.PackageType {
+		if pt.Name == "SymbolsPackage" {
+			packageType = SymbolsPackage
+			break
+		}
+	}
+
+	m := &Metadata{
+		Description:              p.Metadata.Description,
+		ReleaseNotes:             p.Metadata.ReleaseNotes,
+		Authors:                  p.Metadata.Authors,
+		ProjectURL:               p.Metadata.ProjectURL,
+		RepositoryURL:            p.Metadata.Repository.URL,
+		RequireLicenseAcceptance: p.Metadata.RequireLicenseAcceptance,
+		Dependencies:             make(map[string][]Dependency),
+	}
+
+	if p.Metadata.Readme != "" {
+		f, err := archive.Open(p.Metadata.Readme)
+		if err == nil {
+			buf, _ := io.ReadAll(f)
+			m.Readme = string(buf)
+			_ = f.Close()
+		}
+	}
+
+	if len(p.Metadata.Dependencies.Dependency) > 0 {
+		deps := make([]Dependency, 0, len(p.Metadata.Dependencies.Dependency))
+		for _, dep := range p.Metadata.Dependencies.Dependency {
+			if dep.ID == "" || dep.Version == "" {
+				continue
+			}
+			deps = append(deps, Dependency{
+				ID:      dep.ID,
+				Version: dep.Version,
+			})
+		}
+		m.Dependencies[""] = deps
+	}
+	for _, group := range p.Metadata.Dependencies.Group {
+		deps := make([]Dependency, 0, len(group.Dependency))
+		for _, dep := range group.Dependency {
+			if dep.ID == "" || dep.Version == "" {
+				continue
+			}
+			deps = append(deps, Dependency{
+				ID:      dep.ID,
+				Version: dep.Version,
+			})
+		}
+		if len(deps) > 0 {
+			m.Dependencies[group.TargetFramework] = deps
+		}
+	}
+	return &Package{
+		PackageType:   packageType,
+		ID:            p.Metadata.ID,
+		Version:       toNormalizedVersion(v),
+		Metadata:      m,
+		NuspecContent: &nuspecBuf,
+	}, nil
+}
+
+// https://learn.microsoft.com/en-us/nuget/concepts/package-versioning#normalized-version-numbers
+// https://github.com/NuGet/NuGet.Client/blob/dccbd304b11103e08b97abf4cf4bcc1499d9235a/src/NuGet.Core/NuGet.Versioning/VersionFormatter.cs#L121
+func toNormalizedVersion(v *version.Version) string {
+	var buf bytes.Buffer
+	segments := v.Segments64()
+	fmt.Fprintf(&buf, "%d.%d.%d", segments[0], segments[1], segments[2])
+	if len(segments) > 3 && segments[3] > 0 {
+		fmt.Fprintf(&buf, ".%d", segments[3])
+	}
+	pre := v.Prerelease()
+	if pre != "" {
+		fmt.Fprint(&buf, "-", pre)
+	}
+	return buf.String()
+}
diff --git a/modules/packages/nuget/metadata_test.go b/modules/packages/nuget/metadata_test.go
new file mode 100644
index 0000000..ecce052
--- /dev/null
+++ b/modules/packages/nuget/metadata_test.go
@@ -0,0 +1,188 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package nuget
+
+import (
+	"archive/zip"
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+const (
+	id                = "System.Gitea"
+	semver            = "1.0.1"
+	authors           = "Gitea Authors"
+	projectURL        = "https://gitea.io"
+	description       = "Package Description"
+	releaseNotes      = "Package Release Notes"
+	readme            = "Readme"
+	repositoryURL     = "https://gitea.io/gitea/gitea"
+	targetFramework   = ".NETStandard2.1"
+	dependencyID      = "System.Text.Json"
+	dependencyVersion = "5.0.0"
+)
+
+const nuspecContent = `<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+  <metadata>
+    <id>` + id + `</id>
+    <version>` + semver + `</version>
+    <authors>` + authors + `</authors>
+    <requireLicenseAcceptance>true</requireLicenseAcceptance>
+    <projectUrl>` + projectURL + `</projectUrl>
+    <description>` + description + `</description>
+    <releaseNotes>` + releaseNotes + `</releaseNotes>
+    <repository url="` + repositoryURL + `" />
+    <readme>README.md</readme>
+    <dependencies>
+      <group targetFramework="` + targetFramework + `">
+        <dependency id="` + dependencyID + `" version="` + dependencyVersion + `" exclude="Build,Analyzers" />
+      </group>
+    </dependencies>
+  </metadata>
+</package>`
+
+const symbolsNuspecContent = `<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+  <metadata>
+    <id>` + id + `</id>
+    <version>` + semver + `</version>
+    <description>` + description + `</description>
+    <packageTypes>
+      <packageType name="SymbolsPackage" />
+    </packageTypes>
+    <dependencies>
+      <group targetFramework="` + targetFramework + `" />
+    </dependencies>
+  </metadata>
+</package>`
+
+func TestParsePackageMetaData(t *testing.T) {
+	createArchive := func(files map[string]string) []byte {
+		var buf bytes.Buffer
+		archive := zip.NewWriter(&buf)
+		for name, content := range files {
+			w, _ := archive.Create(name)
+			w.Write([]byte(content))
+		}
+		archive.Close()
+		return buf.Bytes()
+	}
+
+	t.Run("MissingNuspecFile", func(t *testing.T) {
+		data := createArchive(map[string]string{"dummy.txt": ""})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		assert.Nil(t, np)
+		require.ErrorIs(t, err, ErrMissingNuspecFile)
+	})
+
+	t.Run("MissingNuspecFileInRoot", func(t *testing.T) {
+		data := createArchive(map[string]string{"sub/package.nuspec": ""})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		assert.Nil(t, np)
+		require.ErrorIs(t, err, ErrMissingNuspecFile)
+	})
+
+	t.Run("InvalidNuspecFile", func(t *testing.T) {
+		data := createArchive(map[string]string{"package.nuspec": ""})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		assert.Nil(t, np)
+		require.Error(t, err)
+	})
+
+	t.Run("InvalidPackageId", func(t *testing.T) {
+		data := createArchive(map[string]string{"package.nuspec": `<?xml version="1.0" encoding="utf-8"?>
+		<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+		  <metadata></metadata>
+		</package>`})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		assert.Nil(t, np)
+		require.ErrorIs(t, err, ErrNuspecInvalidID)
+	})
+
+	t.Run("InvalidPackageVersion", func(t *testing.T) {
+		data := createArchive(map[string]string{"package.nuspec": `<?xml version="1.0" encoding="utf-8"?>
+		<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+		  <metadata>
+			<id>` + id + `</id>
+		  </metadata>
+		</package>`})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		assert.Nil(t, np)
+		require.ErrorIs(t, err, ErrNuspecInvalidVersion)
+	})
+
+	t.Run("MissingReadme", func(t *testing.T) {
+		data := createArchive(map[string]string{"package.nuspec": nuspecContent})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		require.NoError(t, err)
+		assert.NotNil(t, np)
+		assert.Empty(t, np.Metadata.Readme)
+	})
+
+	t.Run("Dependency Package", func(t *testing.T) {
+		data := createArchive(map[string]string{
+			"package.nuspec": nuspecContent,
+			"README.md":      readme,
+		})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		require.NoError(t, err)
+		assert.NotNil(t, np)
+		assert.Equal(t, DependencyPackage, np.PackageType)
+
+		assert.Equal(t, id, np.ID)
+		assert.Equal(t, semver, np.Version)
+		assert.Equal(t, authors, np.Metadata.Authors)
+		assert.Equal(t, projectURL, np.Metadata.ProjectURL)
+		assert.Equal(t, description, np.Metadata.Description)
+		assert.Equal(t, releaseNotes, np.Metadata.ReleaseNotes)
+		assert.Equal(t, readme, np.Metadata.Readme)
+		assert.Equal(t, repositoryURL, np.Metadata.RepositoryURL)
+		assert.Len(t, np.Metadata.Dependencies, 1)
+		assert.Contains(t, np.Metadata.Dependencies, targetFramework)
+		deps := np.Metadata.Dependencies[targetFramework]
+		assert.Len(t, deps, 1)
+		assert.Equal(t, dependencyID, deps[0].ID)
+		assert.Equal(t, dependencyVersion, deps[0].Version)
+
+		t.Run("NormalizedVersion", func(t *testing.T) {
+			data := createArchive(map[string]string{"package.nuspec": `<?xml version="1.0" encoding="utf-8"?>
+				<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+				  <metadata>
+					<id>test</id>
+					<version>1.04.5.2.5-rc.1+metadata</version>
+				  </metadata>
+				</package>`})
+
+			np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+			require.NoError(t, err)
+			assert.NotNil(t, np)
+			assert.Equal(t, "1.4.5.2-rc.1", np.Version)
+		})
+	})
+
+	t.Run("Symbols Package", func(t *testing.T) {
+		data := createArchive(map[string]string{"package.nuspec": symbolsNuspecContent})
+
+		np, err := ParsePackageMetaData(bytes.NewReader(data), int64(len(data)))
+		require.NoError(t, err)
+		assert.NotNil(t, np)
+		assert.Equal(t, SymbolsPackage, np.PackageType)
+
+		assert.Equal(t, id, np.ID)
+		assert.Equal(t, semver, np.Version)
+		assert.Equal(t, description, np.Metadata.Description)
+		assert.Empty(t, np.Metadata.Dependencies)
+	})
+}
diff --git a/modules/packages/nuget/symbol_extractor.go b/modules/packages/nuget/symbol_extractor.go
new file mode 100644
index 0000000..81bf037
--- /dev/null
+++ b/modules/packages/nuget/symbol_extractor.go
@@ -0,0 +1,186 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package nuget
+
+import (
+	"archive/zip"
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"path"
+	"path/filepath"
+	"strings"
+
+	"code.gitea.io/gitea/modules/packages"
+	"code.gitea.io/gitea/modules/util"
+)
+
+var (
+	ErrMissingPdbFiles       = util.NewInvalidArgumentErrorf("package does not contain PDB files")
+	ErrInvalidFiles          = util.NewInvalidArgumentErrorf("package contains invalid files")
+	ErrInvalidPdbMagicNumber = util.NewInvalidArgumentErrorf("invalid Portable PDB magic number")
+	ErrMissingPdbStream      = util.NewInvalidArgumentErrorf("missing PDB stream")
+)
+
+type PortablePdb struct {
+	Name    string
+	ID      string
+	Content *packages.HashedBuffer
+}
+
+type PortablePdbList []*PortablePdb
+
+func (l PortablePdbList) Close() {
+	for _, pdb := range l {
+		pdb.Content.Close()
+	}
+}
+
+// ExtractPortablePdb extracts PDB files from a .snupkg file
+func ExtractPortablePdb(r io.ReaderAt, size int64) (PortablePdbList, error) {
+	archive, err := zip.NewReader(r, size)
+	if err != nil {
+		return nil, err
+	}
+
+	var pdbs PortablePdbList
+
+	err = func() error {
+		for _, file := range archive.File {
+			if strings.HasSuffix(file.Name, "/") {
+				continue
+			}
+			ext := strings.ToLower(filepath.Ext(file.Name))
+
+			switch ext {
+			case ".nuspec", ".xml", ".psmdcp", ".rels", ".p7s":
+				continue
+			case ".pdb":
+				f, err := archive.Open(file.Name)
+				if err != nil {
+					return err
+				}
+
+				buf, err := packages.CreateHashedBufferFromReader(f)
+
+				f.Close()
+
+				if err != nil {
+					return err
+				}
+
+				id, err := ParseDebugHeaderID(buf)
+				if err != nil {
+					buf.Close()
+					return fmt.Errorf("Invalid PDB file: %w", err)
+				}
+
+				if _, err := buf.Seek(0, io.SeekStart); err != nil {
+					buf.Close()
+					return err
+				}
+
+				pdbs = append(pdbs, &PortablePdb{
+					Name:    path.Base(file.Name),
+					ID:      id,
+					Content: buf,
+				})
+			default:
+				return ErrInvalidFiles
+			}
+		}
+		return nil
+	}()
+	if err != nil {
+		pdbs.Close()
+		return nil, err
+	}
+
+	if len(pdbs) == 0 {
+		return nil, ErrMissingPdbFiles
+	}
+
+	return pdbs, nil
+}
+
+// ParseDebugHeaderID TODO
+func ParseDebugHeaderID(r io.ReadSeeker) (string, error) {
+	var magic uint32
+	if err := binary.Read(r, binary.LittleEndian, &magic); err != nil {
+		return "", err
+	}
+	if magic != 0x424A5342 {
+		return "", ErrInvalidPdbMagicNumber
+	}
+
+	if _, err := r.Seek(8, io.SeekCurrent); err != nil {
+		return "", err
+	}
+
+	var versionStringSize int32
+	if err := binary.Read(r, binary.LittleEndian, &versionStringSize); err != nil {
+		return "", err
+	}
+	if _, err := r.Seek(int64(versionStringSize), io.SeekCurrent); err != nil {
+		return "", err
+	}
+	if _, err := r.Seek(2, io.SeekCurrent); err != nil {
+		return "", err
+	}
+
+	var streamCount int16
+	if err := binary.Read(r, binary.LittleEndian, &streamCount); err != nil {
+		return "", err
+	}
+
+	read4ByteAlignedString := func(r io.Reader) (string, error) {
+		b := make([]byte, 4)
+		var buf bytes.Buffer
+		for {
+			if _, err := r.Read(b); err != nil {
+				return "", err
+			}
+			if i := bytes.IndexByte(b, 0); i != -1 {
+				buf.Write(b[:i])
+				return buf.String(), nil
+			}
+			buf.Write(b)
+		}
+	}
+
+	for i := 0; i < int(streamCount); i++ {
+		var offset uint32
+		if err := binary.Read(r, binary.LittleEndian, &offset); err != nil {
+			return "", err
+		}
+		if _, err := r.Seek(4, io.SeekCurrent); err != nil {
+			return "", err
+		}
+		name, err := read4ByteAlignedString(r)
+		if err != nil {
+			return "", err
+		}
+
+		if name == "#Pdb" {
+			if _, err := r.Seek(int64(offset), io.SeekStart); err != nil {
+				return "", err
+			}
+
+			b := make([]byte, 16)
+			if _, err := r.Read(b); err != nil {
+				return "", err
+			}
+
+			data1 := binary.LittleEndian.Uint32(b[0:4])
+			data2 := binary.LittleEndian.Uint16(b[4:6])
+			data3 := binary.LittleEndian.Uint16(b[6:8])
+			data4 := b[8:16]
+
+			return fmt.Sprintf("%08x%04x%04x%04x%012x", data1, data2, data3, data4[:2], data4[2:]), nil
+		}
+	}
+
+	return "", ErrMissingPdbStream
+}
diff --git a/modules/packages/nuget/symbol_extractor_test.go b/modules/packages/nuget/symbol_extractor_test.go
new file mode 100644
index 0000000..b767ed0
--- /dev/null
+++ b/modules/packages/nuget/symbol_extractor_test.go
@@ -0,0 +1,82 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package nuget
+
+import (
+	"archive/zip"
+	"bytes"
+	"encoding/base64"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+const pdbContent = `QlNKQgEAAQAAAAAADAAAAFBEQiB2MS4wAAAAAAAABgB8AAAAWAAAACNQZGIAAAAA1AAAAAgBAAAj
+fgAA3AEAAAQAAAAjU3RyaW5ncwAAAADgAQAABAAAACNVUwDkAQAAMAAAACNHVUlEAAAAFAIAACgB
+AAAjQmxvYgAAAGm7ENm9SGxMtAFVvPUsPJTF6PbtAAAAAFcVogEJAAAAAQAAAA==`
+
+func TestExtractPortablePdb(t *testing.T) {
+	createArchive := func(name string, content []byte) []byte {
+		var buf bytes.Buffer
+		archive := zip.NewWriter(&buf)
+		w, _ := archive.Create(name)
+		w.Write(content)
+		archive.Close()
+		return buf.Bytes()
+	}
+
+	t.Run("MissingPdbFiles", func(t *testing.T) {
+		var buf bytes.Buffer
+		zip.NewWriter(&buf).Close()
+
+		pdbs, err := ExtractPortablePdb(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
+		require.ErrorIs(t, err, ErrMissingPdbFiles)
+		assert.Empty(t, pdbs)
+	})
+
+	t.Run("InvalidFiles", func(t *testing.T) {
+		data := createArchive("sub/test.bin", []byte{})
+
+		pdbs, err := ExtractPortablePdb(bytes.NewReader(data), int64(len(data)))
+		require.ErrorIs(t, err, ErrInvalidFiles)
+		assert.Empty(t, pdbs)
+	})
+
+	t.Run("Valid", func(t *testing.T) {
+		b, _ := base64.StdEncoding.DecodeString(pdbContent)
+		data := createArchive("test.pdb", b)
+
+		pdbs, err := ExtractPortablePdb(bytes.NewReader(data), int64(len(data)))
+		require.NoError(t, err)
+		assert.Len(t, pdbs, 1)
+		assert.Equal(t, "test.pdb", pdbs[0].Name)
+		assert.Equal(t, "d910bb6948bd4c6cb40155bcf52c3c94", pdbs[0].ID)
+		pdbs.Close()
+	})
+}
+
+func TestParseDebugHeaderID(t *testing.T) {
+	t.Run("InvalidPdbMagicNumber", func(t *testing.T) {
+		id, err := ParseDebugHeaderID(bytes.NewReader([]byte{0, 0, 0, 0}))
+		require.ErrorIs(t, err, ErrInvalidPdbMagicNumber)
+		assert.Empty(t, id)
+	})
+
+	t.Run("MissingPdbStream", func(t *testing.T) {
+		b, _ := base64.StdEncoding.DecodeString(`QlNKQgEAAQAAAAAADAAAAFBEQiB2MS4wAAAAAAAAAQB8AAAAWAAAACNVUwA=`)
+
+		id, err := ParseDebugHeaderID(bytes.NewReader(b))
+		require.ErrorIs(t, err, ErrMissingPdbStream)
+		assert.Empty(t, id)
+	})
+
+	t.Run("Valid", func(t *testing.T) {
+		b, _ := base64.StdEncoding.DecodeString(pdbContent)
+
+		id, err := ParseDebugHeaderID(bytes.NewReader(b))
+		require.NoError(t, err)
+		assert.Equal(t, "d910bb6948bd4c6cb40155bcf52c3c94", id)
+	})
+}