mirror of
https://github.com/go-gitea/gitea.git
synced 2025-10-29 10:57:44 +09:00
Vendor Update (#16121)
* update github.com/PuerkitoBio/goquery * update github.com/alecthomas/chroma * update github.com/blevesearch/bleve/v2 * update github.com/caddyserver/certmagic * update github.com/go-enry/go-enry/v2 * update github.com/go-git/go-billy/v5 * update github.com/go-git/go-git/v5 * update github.com/go-redis/redis/v8 * update github.com/go-testfixtures/testfixtures/v3 * update github.com/jaytaylor/html2text * update github.com/json-iterator/go * update github.com/klauspost/compress * update github.com/markbates/goth * update github.com/mattn/go-isatty * update github.com/mholt/archiver/v3 * update github.com/microcosm-cc/bluemonday * update github.com/minio/minio-go/v7 * update github.com/prometheus/client_golang * update github.com/unrolled/render * update github.com/xanzy/go-gitlab * update github.com/yuin/goldmark * update github.com/yuin/goldmark-highlighting Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
6543
GitHub
522
vendor/github.com/ProtonMail/go-crypto/openpgp/packet/packet.go
generated
vendored
Normal file
522
vendor/github.com/ProtonMail/go-crypto/openpgp/packet/packet.go
generated
vendored
Normal file
@@ -0,0 +1,522 @@
|
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package packet implements parsing and serialization of OpenPGP packets, as
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// specified in RFC 4880.
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package packet // import "github.com/ProtonMail/go-crypto/openpgp/packet"
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import (
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"bytes"
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"crypto/cipher"
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"crypto/rsa"
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"io"
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"github.com/ProtonMail/go-crypto/openpgp/errors"
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"github.com/ProtonMail/go-crypto/openpgp/internal/algorithm"
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)
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|
||||
// readFull is the same as io.ReadFull except that reading zero bytes returns
|
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// ErrUnexpectedEOF rather than EOF.
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func readFull(r io.Reader, buf []byte) (n int, err error) {
|
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n, err = io.ReadFull(r, buf)
|
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if err == io.EOF {
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err = io.ErrUnexpectedEOF
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}
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return
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}
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// readLength reads an OpenPGP length from r. See RFC 4880, section 4.2.2.
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func readLength(r io.Reader) (length int64, isPartial bool, err error) {
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var buf [4]byte
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_, err = readFull(r, buf[:1])
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if err != nil {
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return
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}
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switch {
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case buf[0] < 192:
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length = int64(buf[0])
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case buf[0] < 224:
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length = int64(buf[0]-192) << 8
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_, err = readFull(r, buf[0:1])
|
||||
if err != nil {
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return
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}
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length += int64(buf[0]) + 192
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case buf[0] < 255:
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length = int64(1) << (buf[0] & 0x1f)
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isPartial = true
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default:
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_, err = readFull(r, buf[0:4])
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if err != nil {
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return
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}
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length = int64(buf[0])<<24 |
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int64(buf[1])<<16 |
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int64(buf[2])<<8 |
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int64(buf[3])
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}
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return
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}
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// partialLengthReader wraps an io.Reader and handles OpenPGP partial lengths.
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// The continuation lengths are parsed and removed from the stream and EOF is
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// returned at the end of the packet. See RFC 4880, section 4.2.2.4.
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type partialLengthReader struct {
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r io.Reader
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remaining int64
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isPartial bool
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}
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func (r *partialLengthReader) Read(p []byte) (n int, err error) {
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for r.remaining == 0 {
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if !r.isPartial {
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return 0, io.EOF
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}
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r.remaining, r.isPartial, err = readLength(r.r)
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if err != nil {
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return 0, err
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}
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}
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toRead := int64(len(p))
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if toRead > r.remaining {
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toRead = r.remaining
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}
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n, err = r.r.Read(p[:int(toRead)])
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r.remaining -= int64(n)
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if n < int(toRead) && err == io.EOF {
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err = io.ErrUnexpectedEOF
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}
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return
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}
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// partialLengthWriter writes a stream of data using OpenPGP partial lengths.
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// See RFC 4880, section 4.2.2.4.
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type partialLengthWriter struct {
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w io.WriteCloser
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buf bytes.Buffer
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lengthByte [1]byte
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}
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func (w *partialLengthWriter) Write(p []byte) (n int, err error) {
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bufLen := w.buf.Len()
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if bufLen > 512 {
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for power := uint(30); ; power-- {
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l := 1 << power
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if bufLen >= l {
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w.lengthByte[0] = 224 + uint8(power)
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_, err = w.w.Write(w.lengthByte[:])
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if err != nil {
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return
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}
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var m int
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m, err = w.w.Write(w.buf.Next(l))
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if err != nil {
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return
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}
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if m != l {
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return 0, io.ErrShortWrite
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}
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break
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}
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}
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}
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return w.buf.Write(p)
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}
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func (w *partialLengthWriter) Close() (err error) {
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len := w.buf.Len()
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err = serializeLength(w.w, len)
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if err != nil {
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return err
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}
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_, err = w.buf.WriteTo(w.w)
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if err != nil {
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return err
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}
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return w.w.Close()
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}
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// A spanReader is an io.LimitReader, but it returns ErrUnexpectedEOF if the
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// underlying Reader returns EOF before the limit has been reached.
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type spanReader struct {
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r io.Reader
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n int64
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}
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func (l *spanReader) Read(p []byte) (n int, err error) {
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if l.n <= 0 {
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return 0, io.EOF
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}
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if int64(len(p)) > l.n {
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p = p[0:l.n]
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}
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n, err = l.r.Read(p)
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l.n -= int64(n)
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if l.n > 0 && err == io.EOF {
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err = io.ErrUnexpectedEOF
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}
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return
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}
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// readHeader parses a packet header and returns an io.Reader which will return
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// the contents of the packet. See RFC 4880, section 4.2.
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func readHeader(r io.Reader) (tag packetType, length int64, contents io.Reader, err error) {
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var buf [4]byte
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_, err = io.ReadFull(r, buf[:1])
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if err != nil {
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return
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}
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if buf[0]&0x80 == 0 {
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err = errors.StructuralError("tag byte does not have MSB set")
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return
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}
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if buf[0]&0x40 == 0 {
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// Old format packet
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tag = packetType((buf[0] & 0x3f) >> 2)
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lengthType := buf[0] & 3
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if lengthType == 3 {
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length = -1
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contents = r
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return
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}
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lengthBytes := 1 << lengthType
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_, err = readFull(r, buf[0:lengthBytes])
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if err != nil {
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return
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}
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for i := 0; i < lengthBytes; i++ {
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length <<= 8
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length |= int64(buf[i])
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}
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contents = &spanReader{r, length}
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return
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}
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// New format packet
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tag = packetType(buf[0] & 0x3f)
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length, isPartial, err := readLength(r)
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if err != nil {
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return
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}
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if isPartial {
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contents = &partialLengthReader{
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remaining: length,
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isPartial: true,
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r: r,
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}
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length = -1
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} else {
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contents = &spanReader{r, length}
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}
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return
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}
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// serializeHeader writes an OpenPGP packet header to w. See RFC 4880, section
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// 4.2.
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func serializeHeader(w io.Writer, ptype packetType, length int) (err error) {
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err = serializeType(w, ptype)
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if err != nil {
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return
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}
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return serializeLength(w, length)
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}
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// serializeType writes an OpenPGP packet type to w. See RFC 4880, section
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// 4.2.
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func serializeType(w io.Writer, ptype packetType) (err error) {
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var buf [1]byte
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buf[0] = 0x80 | 0x40 | byte(ptype)
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_, err = w.Write(buf[:])
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return
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}
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// serializeLength writes an OpenPGP packet length to w. See RFC 4880, section
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// 4.2.2.
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func serializeLength(w io.Writer, length int) (err error) {
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var buf [5]byte
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var n int
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if length < 192 {
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buf[0] = byte(length)
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n = 1
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} else if length < 8384 {
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length -= 192
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buf[0] = 192 + byte(length>>8)
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buf[1] = byte(length)
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n = 2
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} else {
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buf[0] = 255
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buf[1] = byte(length >> 24)
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buf[2] = byte(length >> 16)
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buf[3] = byte(length >> 8)
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buf[4] = byte(length)
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n = 5
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}
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_, err = w.Write(buf[:n])
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return
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}
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// serializeStreamHeader writes an OpenPGP packet header to w where the
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// length of the packet is unknown. It returns a io.WriteCloser which can be
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// used to write the contents of the packet. See RFC 4880, section 4.2.
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func serializeStreamHeader(w io.WriteCloser, ptype packetType) (out io.WriteCloser, err error) {
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err = serializeType(w, ptype)
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if err != nil {
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return
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}
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out = &partialLengthWriter{w: w}
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return
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}
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// Packet represents an OpenPGP packet. Users are expected to try casting
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// instances of this interface to specific packet types.
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type Packet interface {
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parse(io.Reader) error
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}
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// consumeAll reads from the given Reader until error, returning the number of
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// bytes read.
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func consumeAll(r io.Reader) (n int64, err error) {
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var m int
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var buf [1024]byte
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for {
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m, err = r.Read(buf[:])
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n += int64(m)
|
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if err == io.EOF {
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err = nil
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return
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}
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if err != nil {
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return
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}
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}
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}
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// packetType represents the numeric ids of the different OpenPGP packet types. See
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// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-2
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type packetType uint8
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const (
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packetTypeEncryptedKey packetType = 1
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packetTypeSignature packetType = 2
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packetTypeSymmetricKeyEncrypted packetType = 3
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packetTypeOnePassSignature packetType = 4
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packetTypePrivateKey packetType = 5
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packetTypePublicKey packetType = 6
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packetTypePrivateSubkey packetType = 7
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packetTypeCompressed packetType = 8
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packetTypeSymmetricallyEncrypted packetType = 9
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packetTypeLiteralData packetType = 11
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packetTypeUserId packetType = 13
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packetTypePublicSubkey packetType = 14
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||||
packetTypeUserAttribute packetType = 17
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||||
packetTypeSymmetricallyEncryptedMDC packetType = 18
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||||
packetTypeAEADEncrypted packetType = 20
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)
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||||
// EncryptedDataPacket holds encrypted data. It is currently implemented by
|
||||
// SymmetricallyEncrypted and AEADEncrypted.
|
||||
type EncryptedDataPacket interface {
|
||||
Decrypt(CipherFunction, []byte) (io.ReadCloser, error)
|
||||
}
|
||||
|
||||
// Read reads a single OpenPGP packet from the given io.Reader. If there is an
|
||||
// error parsing a packet, the whole packet is consumed from the input.
|
||||
func Read(r io.Reader) (p Packet, err error) {
|
||||
tag, _, contents, err := readHeader(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch tag {
|
||||
case packetTypeEncryptedKey:
|
||||
p = new(EncryptedKey)
|
||||
case packetTypeSignature:
|
||||
p = new(Signature)
|
||||
case packetTypeSymmetricKeyEncrypted:
|
||||
p = new(SymmetricKeyEncrypted)
|
||||
case packetTypeOnePassSignature:
|
||||
p = new(OnePassSignature)
|
||||
case packetTypePrivateKey, packetTypePrivateSubkey:
|
||||
pk := new(PrivateKey)
|
||||
if tag == packetTypePrivateSubkey {
|
||||
pk.IsSubkey = true
|
||||
}
|
||||
p = pk
|
||||
case packetTypePublicKey, packetTypePublicSubkey:
|
||||
isSubkey := tag == packetTypePublicSubkey
|
||||
p = &PublicKey{IsSubkey: isSubkey}
|
||||
case packetTypeCompressed:
|
||||
p = new(Compressed)
|
||||
case packetTypeSymmetricallyEncrypted:
|
||||
err = errors.UnsupportedError("Symmetrically encrypted packets without MDC are not supported")
|
||||
case packetTypeLiteralData:
|
||||
p = new(LiteralData)
|
||||
case packetTypeUserId:
|
||||
p = new(UserId)
|
||||
case packetTypeUserAttribute:
|
||||
p = new(UserAttribute)
|
||||
case packetTypeSymmetricallyEncryptedMDC:
|
||||
se := new(SymmetricallyEncrypted)
|
||||
se.MDC = true
|
||||
p = se
|
||||
case packetTypeAEADEncrypted:
|
||||
p = new(AEADEncrypted)
|
||||
default:
|
||||
err = errors.UnknownPacketTypeError(tag)
|
||||
}
|
||||
if p != nil {
|
||||
err = p.parse(contents)
|
||||
}
|
||||
if err != nil {
|
||||
consumeAll(contents)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// SignatureType represents the different semantic meanings of an OpenPGP
|
||||
// signature. See RFC 4880, section 5.2.1.
|
||||
type SignatureType uint8
|
||||
|
||||
const (
|
||||
SigTypeBinary SignatureType = 0x00
|
||||
SigTypeText = 0x01
|
||||
SigTypeGenericCert = 0x10
|
||||
SigTypePersonaCert = 0x11
|
||||
SigTypeCasualCert = 0x12
|
||||
SigTypePositiveCert = 0x13
|
||||
SigTypeSubkeyBinding = 0x18
|
||||
SigTypePrimaryKeyBinding = 0x19
|
||||
SigTypeDirectSignature = 0x1F
|
||||
SigTypeKeyRevocation = 0x20
|
||||
SigTypeSubkeyRevocation = 0x28
|
||||
)
|
||||
|
||||
// PublicKeyAlgorithm represents the different public key system specified for
|
||||
// OpenPGP. See
|
||||
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-12
|
||||
type PublicKeyAlgorithm uint8
|
||||
|
||||
const (
|
||||
PubKeyAlgoRSA PublicKeyAlgorithm = 1
|
||||
PubKeyAlgoElGamal PublicKeyAlgorithm = 16
|
||||
PubKeyAlgoDSA PublicKeyAlgorithm = 17
|
||||
// RFC 6637, Section 5.
|
||||
PubKeyAlgoECDH PublicKeyAlgorithm = 18
|
||||
PubKeyAlgoECDSA PublicKeyAlgorithm = 19
|
||||
// https://www.ietf.org/archive/id/draft-koch-eddsa-for-openpgp-04.txt
|
||||
PubKeyAlgoEdDSA PublicKeyAlgorithm = 22
|
||||
|
||||
// Deprecated in RFC 4880, Section 13.5. Use key flags instead.
|
||||
PubKeyAlgoRSAEncryptOnly PublicKeyAlgorithm = 2
|
||||
PubKeyAlgoRSASignOnly PublicKeyAlgorithm = 3
|
||||
)
|
||||
|
||||
// CanEncrypt returns true if it's possible to encrypt a message to a public
|
||||
// key of the given type.
|
||||
func (pka PublicKeyAlgorithm) CanEncrypt() bool {
|
||||
switch pka {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoElGamal, PubKeyAlgoECDH:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// CanSign returns true if it's possible for a public key of the given type to
|
||||
// sign a message.
|
||||
func (pka PublicKeyAlgorithm) CanSign() bool {
|
||||
switch pka {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA, PubKeyAlgoEdDSA:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// CipherFunction represents the different block ciphers specified for OpenPGP. See
|
||||
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-13
|
||||
type CipherFunction algorithm.CipherFunction
|
||||
|
||||
const (
|
||||
Cipher3DES CipherFunction = 2
|
||||
CipherCAST5 CipherFunction = 3
|
||||
CipherAES128 CipherFunction = 7
|
||||
CipherAES192 CipherFunction = 8
|
||||
CipherAES256 CipherFunction = 9
|
||||
)
|
||||
|
||||
// KeySize returns the key size, in bytes, of cipher.
|
||||
func (cipher CipherFunction) KeySize() int {
|
||||
return algorithm.CipherFunction(cipher).KeySize()
|
||||
}
|
||||
|
||||
// blockSize returns the block size, in bytes, of cipher.
|
||||
func (cipher CipherFunction) blockSize() int {
|
||||
return algorithm.CipherFunction(cipher).BlockSize()
|
||||
}
|
||||
|
||||
// new returns a fresh instance of the given cipher.
|
||||
func (cipher CipherFunction) new(key []byte) (block cipher.Block) {
|
||||
return algorithm.CipherFunction(cipher).New(key)
|
||||
}
|
||||
|
||||
// padToKeySize left-pads a MPI with zeroes to match the length of the
|
||||
// specified RSA public.
|
||||
func padToKeySize(pub *rsa.PublicKey, b []byte) []byte {
|
||||
k := (pub.N.BitLen() + 7) / 8
|
||||
if len(b) >= k {
|
||||
return b
|
||||
}
|
||||
bb := make([]byte, k)
|
||||
copy(bb[len(bb)-len(b):], b)
|
||||
return bb
|
||||
}
|
||||
|
||||
// CompressionAlgo Represents the different compression algorithms
|
||||
// supported by OpenPGP (except for BZIP2, which is not currently
|
||||
// supported). See Section 9.3 of RFC 4880.
|
||||
type CompressionAlgo uint8
|
||||
|
||||
const (
|
||||
CompressionNone CompressionAlgo = 0
|
||||
CompressionZIP CompressionAlgo = 1
|
||||
CompressionZLIB CompressionAlgo = 2
|
||||
)
|
||||
|
||||
// AEADMode represents the different Authenticated Encryption with Associated
|
||||
// Data specified for OpenPGP.
|
||||
type AEADMode algorithm.AEADMode
|
||||
|
||||
const (
|
||||
AEADModeEAX AEADMode = 1
|
||||
AEADModeOCB AEADMode = 2
|
||||
AEADModeExperimentalGCM AEADMode = 100
|
||||
)
|
||||
|
||||
func (mode AEADMode) NonceLength() int {
|
||||
return algorithm.AEADMode(mode).NonceLength()
|
||||
}
|
||||
|
||||
func (mode AEADMode) TagLength() int {
|
||||
return algorithm.AEADMode(mode).TagLength()
|
||||
}
|
||||
|
||||
// new returns a fresh instance of the given mode.
|
||||
func (mode AEADMode) new(block cipher.Block) cipher.AEAD {
|
||||
return algorithm.AEADMode(mode).New(block)
|
||||
}
|
||||
|
||||
// ReasonForRevocation represents a revocation reason code as per RFC4880
|
||||
// section 5.2.3.23.
|
||||
type ReasonForRevocation uint8
|
||||
|
||||
const (
|
||||
NoReason ReasonForRevocation = 0
|
||||
KeySuperseded ReasonForRevocation = 1
|
||||
KeyCompromised ReasonForRevocation = 2
|
||||
KeyRetired ReasonForRevocation = 3
|
||||
)
|
||||
Reference in New Issue
Block a user