diff options
Diffstat (limited to 'pkg/sif/descriptor.go')
| -rw-r--r-- | pkg/sif/descriptor.go | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/pkg/sif/descriptor.go b/pkg/sif/descriptor.go index da7a6a7..8fa926a 100644 --- a/pkg/sif/descriptor.go +++ b/pkg/sif/descriptor.go @@ -1,4 +1,4 @@ -// Copyright (c) 2018-2021, Sylabs Inc. All rights reserved. +// Copyright (c) 2018-2022, Sylabs Inc. All rights reserved. // Copyright (c) 2017, SingularityWare, LLC. All rights reserved. // Copyright (c) 2017, Yannick Cote <yhcote@gmail.com> All rights reserved. // This software is licensed under a 3-clause BSD license. Please consult the @@ -56,6 +56,11 @@ type cryptoMessage struct { Messagetype MessageType } +// sbom represents the SIF SBOM data object descriptor. +type sbom struct { + Format SBOMFormat +} + var errNameTooLarge = errors.New("name value too large") // setName encodes name into the name field of d. @@ -96,7 +101,7 @@ func (d *rawDescriptor) setExtra(v interface{}) error { } // getPartitionMetadata gets metadata for a partition data object. -func (d rawDescriptor) getPartitionMetadata() (fs FSType, pt PartType, arch string, err error) { +func (d rawDescriptor) getPartitionMetadata() (FSType, PartType, string, error) { if got, want := d.DataType, DataPartition; got != want { return 0, 0, "", &unexpectedDataTypeError{got, []DataType{want}} } @@ -142,6 +147,8 @@ func (d Descriptor) GroupID() uint32 { return d.raw.GroupID &^ descrGroupMask } // LinkedID returns the object/group ID d is linked to, or zero if d does not contain a linked // ID. If isGroup is true, the returned id is an object group ID. Otherwise, the returned id is a // data object ID. +// +//nolint:nonamedreturns // Named returns effective as documentation. func (d Descriptor) LinkedID() (id uint32, isGroup bool) { return d.raw.LinkedID &^ descrGroupMask, d.raw.LinkedID&descrGroupMask == descrGroupMask } @@ -162,6 +169,8 @@ func (d Descriptor) ModifiedAt() time.Time { return time.Unix(d.raw.ModifiedAt, func (d Descriptor) Name() string { return strings.TrimRight(string(d.raw.Name[:]), "\000") } // PartitionMetadata gets metadata for a partition data object. +// +//nolint:nonamedreturns // Named returns effective as documentation. func (d Descriptor) PartitionMetadata() (fs FSType, pt PartType, arch string, err error) { return d.raw.getPartitionMetadata() } @@ -186,6 +195,8 @@ func getHashType(ht hashType) (crypto.Hash, error) { } // SignatureMetadata gets metadata for a signature data object. +// +//nolint:nonamedreturns // Named returns effective as documentation. func (d Descriptor) SignatureMetadata() (ht crypto.Hash, fp []byte, err error) { if got, want := d.raw.DataType, DataSignature; got != want { return ht, fp, &unexpectedDataTypeError{got, []DataType{want}} @@ -203,6 +214,11 @@ func (d Descriptor) SignatureMetadata() (ht crypto.Hash, fp []byte, err error) { } fp = make([]byte, 20) + + if bytes.Equal(s.Entity[:len(fp)], fp) { + return ht, nil, nil // Fingerprint not present. + } + copy(fp, s.Entity[:]) return ht, fp, nil @@ -224,6 +240,22 @@ func (d Descriptor) CryptoMessageMetadata() (FormatType, MessageType, error) { return m.Formattype, m.Messagetype, nil } +// SBOMMetadata gets metadata for a SBOM data object. +func (d Descriptor) SBOMMetadata() (SBOMFormat, error) { + if got, want := d.raw.DataType, DataSBOM; got != want { + return 0, &unexpectedDataTypeError{got, []DataType{want}} + } + + var s sbom + + b := bytes.NewReader(d.raw.Extra[:]) + if err := binary.Read(b, binary.LittleEndian, &s); err != nil { + return 0, fmt.Errorf("%w", err) + } + + return s.Format, nil +} + // GetData returns the data object associated with descriptor d. func (d Descriptor) GetData() ([]byte, error) { b := make([]byte, d.raw.Size) |