/
compressToken.go
67 lines (59 loc) · 1.68 KB
/
compressToken.go
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//Package compresstoken ...
package compresstoken
import (
"bytes"
"compress/flate"
"compress/zlib"
"encoding/base64"
"io"
)
/*
Copyright (C) 2019 Ulbora Labs LLC. (www.ulboralabs.com)
All rights reserved.
Copyright (C) 2019 Ken Williamson
All rights reserved.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//JwtCompress JwtCompress
type JwtCompress struct {
}
//CompressJwt CompressJwt
func (c *JwtCompress) CompressJwt(jwt string) string {
//compress jwt with zlib and package with base64
var rtn string
var b bytes.Buffer
w, err := zlib.NewWriterLevel(&b, flate.BestCompression)
if err == nil {
w.Write([]byte(jwt))
w.Close()
rtn = base64.StdEncoding.EncodeToString(b.Bytes())
}
return rtn
}
//UnCompressJwt UnCompressJwt
func (c *JwtCompress) UnCompressJwt(cjwt string) string {
//uncompress jwt with zlib after converting from base64
var rtn string
var b bytes.Buffer
decoded, derr := base64.StdEncoding.DecodeString(cjwt)
if derr == nil {
b.Write(decoded)
r, err := zlib.NewReader(&b)
if err == nil {
var out bytes.Buffer
io.Copy(&out, r)
r.Close()
rtn = out.String()
}
}
return rtn
}