From 50ece79387dcf6c748e3ae1bd6a7067059c0dfe3 Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Thu, 19 Dec 2019 13:29:25 -0500 Subject: build(deps): bump github.com/containers/image/v5 from 5.0.0 to 5.1.0 Bumps [github.com/containers/image/v5](https://github.com/containers/image) from 5.0.0 to 5.1.0. - [Release notes](https://github.com/containers/image/releases) - [Commits](https://github.com/containers/image/compare/v5.0.0...v5.1.0) Signed-off-by: dependabot-preview[bot] Signed-off-by: Daniel J Walsh --- vendor/gopkg.in/square/go-jose.v2/encoding.go | 179 ++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 vendor/gopkg.in/square/go-jose.v2/encoding.go (limited to 'vendor/gopkg.in/square/go-jose.v2/encoding.go') diff --git a/vendor/gopkg.in/square/go-jose.v2/encoding.go b/vendor/gopkg.in/square/go-jose.v2/encoding.go new file mode 100644 index 000000000..b9687c647 --- /dev/null +++ b/vendor/gopkg.in/square/go-jose.v2/encoding.go @@ -0,0 +1,179 @@ +/*- + * Copyright 2014 Square Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package jose + +import ( + "bytes" + "compress/flate" + "encoding/base64" + "encoding/binary" + "io" + "math/big" + "regexp" + + "gopkg.in/square/go-jose.v2/json" +) + +var stripWhitespaceRegex = regexp.MustCompile("\\s") + +// Helper function to serialize known-good objects. +// Precondition: value is not a nil pointer. +func mustSerializeJSON(value interface{}) []byte { + out, err := json.Marshal(value) + if err != nil { + panic(err) + } + // We never want to serialize the top-level value "null," since it's not a + // valid JOSE message. But if a caller passes in a nil pointer to this method, + // MarshalJSON will happily serialize it as the top-level value "null". If + // that value is then embedded in another operation, for instance by being + // base64-encoded and fed as input to a signing algorithm + // (https://github.com/square/go-jose/issues/22), the result will be + // incorrect. Because this method is intended for known-good objects, and a nil + // pointer is not a known-good object, we are free to panic in this case. + // Note: It's not possible to directly check whether the data pointed at by an + // interface is a nil pointer, so we do this hacky workaround. + // https://groups.google.com/forum/#!topic/golang-nuts/wnH302gBa4I + if string(out) == "null" { + panic("Tried to serialize a nil pointer.") + } + return out +} + +// Strip all newlines and whitespace +func stripWhitespace(data string) string { + return stripWhitespaceRegex.ReplaceAllString(data, "") +} + +// Perform compression based on algorithm +func compress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) { + switch algorithm { + case DEFLATE: + return deflate(input) + default: + return nil, ErrUnsupportedAlgorithm + } +} + +// Perform decompression based on algorithm +func decompress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) { + switch algorithm { + case DEFLATE: + return inflate(input) + default: + return nil, ErrUnsupportedAlgorithm + } +} + +// Compress with DEFLATE +func deflate(input []byte) ([]byte, error) { + output := new(bytes.Buffer) + + // Writing to byte buffer, err is always nil + writer, _ := flate.NewWriter(output, 1) + _, _ = io.Copy(writer, bytes.NewBuffer(input)) + + err := writer.Close() + return output.Bytes(), err +} + +// Decompress with DEFLATE +func inflate(input []byte) ([]byte, error) { + output := new(bytes.Buffer) + reader := flate.NewReader(bytes.NewBuffer(input)) + + _, err := io.Copy(output, reader) + if err != nil { + return nil, err + } + + err = reader.Close() + return output.Bytes(), err +} + +// byteBuffer represents a slice of bytes that can be serialized to url-safe base64. +type byteBuffer struct { + data []byte +} + +func newBuffer(data []byte) *byteBuffer { + if data == nil { + return nil + } + return &byteBuffer{ + data: data, + } +} + +func newFixedSizeBuffer(data []byte, length int) *byteBuffer { + if len(data) > length { + panic("square/go-jose: invalid call to newFixedSizeBuffer (len(data) > length)") + } + pad := make([]byte, length-len(data)) + return newBuffer(append(pad, data...)) +} + +func newBufferFromInt(num uint64) *byteBuffer { + data := make([]byte, 8) + binary.BigEndian.PutUint64(data, num) + return newBuffer(bytes.TrimLeft(data, "\x00")) +} + +func (b *byteBuffer) MarshalJSON() ([]byte, error) { + return json.Marshal(b.base64()) +} + +func (b *byteBuffer) UnmarshalJSON(data []byte) error { + var encoded string + err := json.Unmarshal(data, &encoded) + if err != nil { + return err + } + + if encoded == "" { + return nil + } + + decoded, err := base64.RawURLEncoding.DecodeString(encoded) + if err != nil { + return err + } + + *b = *newBuffer(decoded) + + return nil +} + +func (b *byteBuffer) base64() string { + return base64.RawURLEncoding.EncodeToString(b.data) +} + +func (b *byteBuffer) bytes() []byte { + // Handling nil here allows us to transparently handle nil slices when serializing. + if b == nil { + return nil + } + return b.data +} + +func (b byteBuffer) bigInt() *big.Int { + return new(big.Int).SetBytes(b.data) +} + +func (b byteBuffer) toInt() int { + return int(b.bigInt().Int64()) +} -- cgit v1.2.3-54-g00ecf