You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.4 KiB
55 lines
1.4 KiB
/* |
|
* Spreed WebRTC. |
|
* Copyright (C) 2013-2015 struktur AG |
|
* |
|
* This file is part of Spreed WebRTC. |
|
* |
|
* This program is free software: you can redistribute it and/or modify |
|
* it under the terms of the GNU Affero 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 Affero General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Affero General Public License |
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
* |
|
*/ |
|
|
|
package main |
|
|
|
import ( |
|
"crypto/rand" |
|
pseudoRand "math/rand" |
|
"time" |
|
) |
|
|
|
const ( |
|
dict = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW0123456789" |
|
) |
|
|
|
func NewRandomString(length int) string { |
|
|
|
buf := make([]byte, length) |
|
_, err := rand.Read(buf) |
|
if err != nil { |
|
// fallback to pseudo-random |
|
for i := 0; i < length; i++ { |
|
buf[i] = dict[pseudoRand.Intn(len(dict))] |
|
} |
|
} else { |
|
for i := 0; i < length; i++ { |
|
buf[i] = dict[int(buf[i])%len(dict)] |
|
} |
|
} |
|
return string(buf) |
|
|
|
} |
|
|
|
func init() { |
|
// Make sure to seed default random generator. |
|
pseudoRand.Seed(time.Now().UTC().UnixNano()) |
|
}
|
|
|