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65 lines
1.9 KiB
65 lines
1.9 KiB
// Copyright 2013 Beego Authors
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// Copyright 2014 The Macaron Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package session
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import (
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"bytes"
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"crypto/rand"
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"encoding/gob"
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"io"
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"github.com/unknwon/com"
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)
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func init() {
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gob.Register([]interface{}{})
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gob.Register(map[int]interface{}{})
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gob.Register(map[string]interface{}{})
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gob.Register(map[interface{}]interface{}{})
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gob.Register(map[string]string{})
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gob.Register(map[int]string{})
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gob.Register(map[int]int{})
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gob.Register(map[int]int64{})
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}
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// EncodeGob encodes obj with gob
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func EncodeGob(obj map[interface{}]interface{}) ([]byte, error) {
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for _, v := range obj {
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gob.Register(v)
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}
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buf := bytes.NewBuffer(nil)
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err := gob.NewEncoder(buf).Encode(obj)
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return buf.Bytes(), err
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}
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// DecodeGob decodes bytes to obj
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func DecodeGob(encoded []byte) (out map[interface{}]interface{}, err error) {
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buf := bytes.NewBuffer(encoded)
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err = gob.NewDecoder(buf).Decode(&out)
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return out, err
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}
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// NOTE: A local copy in case of underlying package change
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var alphanum = []byte("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
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// generateRandomKey creates a random key with the given strength.
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func generateRandomKey(strength int) []byte {
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k := make([]byte, strength)
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if n, err := io.ReadFull(rand.Reader, k); n != strength || err != nil {
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return com.RandomCreateBytes(strength, alphanum...)
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}
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return k
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}
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