rename to syft

syft/cataloger/apkdb/parse_apk_db.go

@@ -0,0 +1,99 @@
+package apkdb
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+
+	"github.com/mitchellh/mapstructure"
+
+	"github.com/anchore/syft/syft/pkg"
+)
+
+func parseApkDB(_ string, reader io.Reader) ([]pkg.Package, error) {
+	packages := make([]pkg.Package, 0)
+
+	scanner := bufio.NewScanner(reader)
+	onDoubleLF := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
+		for i := 0; i < len(data); i++ {
+			if i > 0 && data[i-1] == '\n' && data[i] == '\n' {
+				return i + 1, data[:i-1], nil
+			}
+		}
+		if !atEOF {
+			return 0, nil, nil
+		}
+		// deliver the last token (which could be an empty string)
+		return 0, data, bufio.ErrFinalToken
+	}
+
+	scanner.Split(onDoubleLF)
+	for scanner.Scan() {
+		metadata, err := parseApkDBEntry(strings.NewReader(scanner.Text()))
+		if err != nil {
+			return nil, err
+		}
+		if metadata != nil {
+			packages = append(packages, pkg.Package{
+				Name:     metadata.Package,
+				Version:  metadata.Version,
+				Licenses: strings.Split(metadata.License, " "),
+				Type:     pkg.ApkPkg,
+				Metadata: *metadata,
+			})
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, fmt.Errorf("failed to parse APK DB file: %w", err)
+	}
+
+	return packages, nil
+}
+
+func parseApkDBEntry(reader io.Reader) (*pkg.ApkMetadata, error) {
+	var entry pkg.ApkMetadata
+	pkgFields := make(map[string]interface{})
+	files := make([]string, 0)
+
+	scanner := bufio.NewScanner(reader)
+	for scanner.Scan() {
+		line := scanner.Text()
+		fields := strings.SplitN(line, ":", 2)
+		if len(fields) != 2 {
+			continue
+		}
+
+		key := fields[0]
+		value := strings.TrimSpace(fields[1])
+
+		switch key {
+		case "F":
+			// extract all file entries, don't store in map
+			files = append(files, value)
+			continue
+		case "I", "S":
+			// coerce to integer
+			iVal, err := strconv.Atoi(value)
+			if err != nil {
+				return nil, fmt.Errorf("failed to parse APK int: '%+v'", value)
+			}
+			pkgFields[key] = iVal
+		default:
+			pkgFields[key] = value
+		}
+	}
+
+	if err := mapstructure.Decode(pkgFields, &entry); err != nil {
+		return nil, fmt.Errorf("unable to parse APK metadata: %w", err)
+	}
+	if entry.Package == "" {
+		return nil, nil
+	}
+
+	entry.Files = files
+
+	return &entry, nil
+}