mirror of
https://github.com/nabbar/golib.git
synced 2026-04-22 23:17:12 +08:00
Nicolas JUHEL
ca39d7ad26
- Refactor ErrorType, list errors managment, codeError - Add interface Error with error interface implement - Add type CodeError assign typiclly to const that represent code of error - Add func to registry func to retrieve message from an uint16 codeError (typicaly a switch of each codeError const) - Add default errorCode with default errorMessage if no one code or message is found - Add modeError to manage how to manage compatibility between Error interface and error interface - Add Error interface that allow parent link (parent as error or Error interface), code and trace management - Add trace finder to allow find func/file/line caller when Error is call - Add http 2 transport in httpcli - Add http 2 transport in httpserver - Add function to get client http with timeout management in httpcli - Add function to get Error if occurs of http client in httpcli - Add test for smtp package - Chg return error by returning Error in all packages - Chg package njs-archive by archive - Chg package njs-certif by certificates - Chg package njs-console by console - Chg package njs-crypt by crypt - Chg package njs-errors by errors - Chg package njs-httpcli by httpcli - Chg package njs-httpserver by httpserver - Chg package njs-ioutils by ioutils - Chg package njs-ldap by ldap - Chg package njs-logger by logger - Chg package njs-password by password - Chg package njs-progress by progress - Chg package njs-router by router - Chg package njs-semaphore by semaphore - Chg package njs-smtp by smtp - Chg package njs-static by static - Chg package njs-status by status - Chg package njs-version by version - Fix dependancies gopkg by github/go-ldap for go module compatibility - Fix gin Abort call by gin Abort with Error in static package - Fix issue #18 in status package : replace partner by component - Fix go vet error - Del deprecated function - Del useless function & files - Bump dependancies - Apply CHG in README.md
78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
/*
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* MIT License
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*
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* Copyright (c) 2019 Nicolas JUHEL
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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package password
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import (
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"math/rand"
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"time"
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)
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const letterBytes = "abcdefghijklmnopqrstuvwxyz,;:.!&'(-_)=+/*ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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const (
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// If we have 77 chars, that means 7 bits code a letter index.
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// So 63 random bits can designate 63/7 = 9 different letter indices.
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// Let's use all those 10
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letterIdxBits = 7 // 6 bits to represent a letter index
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letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
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letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
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)
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var src = rand.NewSource(time.Now().UnixNano())
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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func randStringBytesMaskImprSrc(n int) string {
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b := make([]byte, n)
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// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
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for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
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if remain == 0 {
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cache, remain = src.Int63(), letterIdxMax
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}
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if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
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b[i] = letterBytes[idx]
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i--
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}
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cache >>= letterIdxBits
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remain--
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}
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return string(b)
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}
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func Generate(n int) string {
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if n > 10 {
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var s = ""
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for i := n; i > 0; i -= 10 {
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s += randStringBytesMaskImprSrc(10)
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}
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return s[0 : n-1]
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}
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return randStringBytesMaskImprSrc(n)
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}
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