mirror of
https://github.com/wneessen/apg-go.git
synced 2024-09-19 19:32:47 +02:00
Winni Neessen
203da17634
Added code to check if set minimum password requirements are met after generating a random password. If not, the password generation process is repeated. This not only adds an extra layer of security but also ensures that all set criteria for the password are met. Also enhanced error handling in functions that could return a negative integer when asked for a random number. Changed 'minimum amount of' parameter descriptions in apg.go to avoid confusion.
110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
package apg
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import (
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"strings"
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)
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// Mode represents a mode of characters
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type Mode uint8
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// ModeMask represents a bitmask of character modes
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type ModeMask uint8
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const (
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// ModeNumeric sets the bitmask to include numeric in the generated passwords
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ModeNumeric = 1 << iota
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// ModeLowerCase sets the bitmask to include lower case characters in the
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// generated passwords
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ModeLowerCase
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// ModeUpperCase sets the bitmask to include upper case characters in the
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// generated passwords
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ModeUpperCase
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// ModeSpecial sets the bitmask to include special characters in the
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// generated passwords
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ModeSpecial
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// ModeHumanReadable sets the bitmask to generate human readable passwords
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ModeHumanReadable
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)
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const (
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// CharRangeAlphaLower represents all lower-case alphabetical characters
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CharRangeAlphaLower = "abcdefghijklmnopqrstuvwxyz"
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// CharRangeAlphaLowerHuman represents the human-readable lower-case alphabetical characters
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CharRangeAlphaLowerHuman = "abcdefghjkmnpqrstuvwxyz"
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// CharRangeAlphaUpper represents all upper-case alphabetical characters
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CharRangeAlphaUpper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// CharRangeAlphaUpperHuman represents the human-readable upper-case alphabetical characters
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CharRangeAlphaUpperHuman = "ABCDEFGHJKMNPQRSTUVWXYZ"
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// CharRangeNumeric represents all numerical characters
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CharRangeNumeric = "1234567890"
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// CharRangeNumericHuman represents all human-readable numerical characters
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CharRangeNumericHuman = "23456789"
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// CharRangeSpecial represents all special characters
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CharRangeSpecial = `!\"#$%&'()*+,-./:;<=>?@[\\]^_{|}~`
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// CharRangeSpecialHuman represents all human-readable special characters
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CharRangeSpecialHuman = `#%*+-:;=`
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)
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// MaskSetMode sets a specific Mode to a given Mode bitmask
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func MaskSetMode(ma ModeMask, mo Mode) ModeMask { return ModeMask(uint8(ma) | uint8(mo)) }
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// MaskClearMode clears a specific Mode from a given Mode bitmask
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func MaskClearMode(ma ModeMask, mo Mode) ModeMask { return ModeMask(uint8(ma) &^ uint8(mo)) }
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// MaskToggleMode toggles a specific Mode in a given Mode bitmask
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func MaskToggleMode(ma ModeMask, mo Mode) ModeMask { return ModeMask(uint8(ma) ^ uint8(mo)) }
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// MaskHasMode returns true if a given Mode bitmask holds a specific Mode
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func MaskHasMode(ma ModeMask, mo Mode) bool { return uint8(ma)&uint8(mo) != 0 }
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func ModesFromFlags(ms string) ModeMask {
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cl := strings.Split(ms, "")
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var mm ModeMask
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for _, m := range cl {
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switch m {
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case "C":
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mm = MaskSetMode(mm, ModeLowerCase|ModeNumeric|ModeSpecial|ModeUpperCase)
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case "h":
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mm = MaskClearMode(mm, ModeHumanReadable)
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case "H":
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mm = MaskSetMode(mm, ModeHumanReadable)
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case "l":
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mm = MaskClearMode(mm, ModeLowerCase)
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case "L":
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mm = MaskSetMode(mm, ModeLowerCase)
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case "n":
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mm = MaskClearMode(mm, ModeNumeric)
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case "N":
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mm = MaskSetMode(mm, ModeNumeric)
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case "s":
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mm = MaskClearMode(mm, ModeSpecial)
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case "S":
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mm = MaskSetMode(mm, ModeSpecial)
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case "u":
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mm = MaskClearMode(mm, ModeUpperCase)
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case "U":
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mm = MaskSetMode(mm, ModeUpperCase)
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}
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}
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return mm
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}
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// String satisfies the fmt.Stringer interface for the Mode type
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func (m Mode) String() string {
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switch m {
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case ModeHumanReadable:
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return "Human-readable"
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case ModeLowerCase:
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return "Lower-case"
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case ModeNumeric:
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return "Numeric"
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case ModeSpecial:
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return "Special"
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case ModeUpperCase:
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return "Upper-case"
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default:
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return "Unknown"
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}
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}
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