mirror of
https://github.com/cheat/cheat.git
synced 2024-12-25 05:59:44 +01:00
80c91cbdee
Integrate `go-git` into the application, and use it to `git clone` cheatsheets when the installer runs. Previously, the installer required that `git` be installed on the system `PATH`, so this change has to big advantages: 1. It removes that system dependency on `git` 2. It paves the way for implementing the `--update` command Additionally, `cheat` now performs a `--depth=1` clone when installing cheatsheets, which should at least somewhat improve installation times (especially on slow network connections).
92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package packet
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"io"
|
|
)
|
|
|
|
// LiteralData represents an encrypted file. See RFC 4880, section 5.9.
|
|
type LiteralData struct {
|
|
Format uint8
|
|
IsBinary bool
|
|
FileName string
|
|
Time uint32 // Unix epoch time. Either creation time or modification time. 0 means undefined.
|
|
Body io.Reader
|
|
}
|
|
|
|
// ForEyesOnly returns whether the contents of the LiteralData have been marked
|
|
// as especially sensitive.
|
|
func (l *LiteralData) ForEyesOnly() bool {
|
|
return l.FileName == "_CONSOLE"
|
|
}
|
|
|
|
func (l *LiteralData) parse(r io.Reader) (err error) {
|
|
var buf [256]byte
|
|
|
|
_, err = readFull(r, buf[:2])
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
l.Format = buf[0]
|
|
l.IsBinary = l.Format == 'b'
|
|
fileNameLen := int(buf[1])
|
|
|
|
_, err = readFull(r, buf[:fileNameLen])
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
l.FileName = string(buf[:fileNameLen])
|
|
|
|
_, err = readFull(r, buf[:4])
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
l.Time = binary.BigEndian.Uint32(buf[:4])
|
|
l.Body = r
|
|
return
|
|
}
|
|
|
|
// SerializeLiteral serializes a literal data packet to w and returns a
|
|
// WriteCloser to which the data itself can be written and which MUST be closed
|
|
// on completion. The fileName is truncated to 255 bytes.
|
|
func SerializeLiteral(w io.WriteCloser, isBinary bool, fileName string, time uint32) (plaintext io.WriteCloser, err error) {
|
|
var buf [4]byte
|
|
buf[0] = 't'
|
|
if isBinary {
|
|
buf[0] = 'b'
|
|
}
|
|
if len(fileName) > 255 {
|
|
fileName = fileName[:255]
|
|
}
|
|
buf[1] = byte(len(fileName))
|
|
|
|
inner, err := serializeStreamHeader(w, packetTypeLiteralData)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
_, err = inner.Write(buf[:2])
|
|
if err != nil {
|
|
return
|
|
}
|
|
_, err = inner.Write([]byte(fileName))
|
|
if err != nil {
|
|
return
|
|
}
|
|
binary.BigEndian.PutUint32(buf[:], time)
|
|
_, err = inner.Write(buf[:])
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
plaintext = inner
|
|
return
|
|
}
|