#!/bin/sh
# pass_gen - create pronouncable passwords with 4-20 characters, 1-10 numbers
# and optional symbol
# author: Rob Haeusler
# licence: GPL
# tested on
# puppy linux - initial development and testing
# xubutu
# windows xp
#
# changelog
# 1.1 - mods to allow different lengths of vowels, letters, digits, symbols
# 1.0 - initial development
#
#
#\
exec wish "$0" $(1+"$@")
# require following packages to operate
package require BWidget
set version "1.1"
set licence "G.P.L"
# data sets used for creating the password
set vowels { a e i o u }
set letters { b c d f g h j k l m n p q r s t v w x y z }
set digits { 0 1 2 3 4 5 6 7 8 9 }
set symbols { ! @ # $ % ^ & * ( ) _ - + }
# -----------------------------------------------------------------------------
# appCreate - create window frame and all its contents, spinboxes, buttons,
# display elements
#
proc appCreate { } {
# menu description
set descmenu {
"&File" all file 0 {
{command "E&xit" {} "exit application" {} \
-command appExit }
}
"&Help" all help 0 {
{command "&About" {} "about the application" {} \
-command appHelpAbout }
}
}
# create the main menu
wm title . "pass_gen"
set mainframe [MainFrame .mainframe -menu $descmenu ]
# create spinboxes for number of letters and numbers
set titf1 [TitleFrame $mainframe.titf1 -text "Number of Characters" ]
set subf1 [$titf1 getframe]
set spin1 [SpinBox $subf1.spin -range { 4 20 1 } -textvariable alpha ]
pack $spin1 -side right
pack $titf1 -fill x -pady 2 -padx 2
set titf2 [TitleFrame $mainframe.titf2 -text "Number of Numbers" ]
set subf2 [$titf2 getframe]
set spin2 [SpinBox $subf2.spin -range { 1 10 1 } -textvariable numeric ]
pack $spin2 -side right
pack $titf2 -fill x -pady 2 -padx 2
# create radio button (yes/no choice) for symbols
set titf3 [TitleFrame $mainframe.titf3 -text "Symbol"]
set subf3 [$titf3 getframe]
set rad1 [radiobutton $subf3.rad1 -text "Yes" \
-variable wantsymbol -value 1]
set rad2 [radiobutton $subf3.rad2 -text "No" \
-variable wantsymbol -value 0]
pack $rad1 $rad2 -side left
pack $titf3 -fill x -pady 2 -padx 2
# create display box for generated passwords
set titf4 [TitleFrame $mainframe.titf4 -text "Password"]
set subf4 [$titf4 getframe]
set ent1 [Entry $subf4.entry -textvariable genpassword]
pack $ent1 -pady 4 -anchor w -side left
pack $titf4
# create button for generating new password
set but [Button $mainframe.but -text "New" \
-command "newPass" -helptext "create new password" ]
pack $but -side left -padx 4
wm protocol . WM_DELETE_WINDOW { appExit }
pack $mainframe -fill both -expand yes
update idletasks
}
#
# newPass - determine how many letters, vowels, digits, symbols and display the
# created password
#
proc newPass { } {
global genpassword alpha numeric wantsymbol
set fpl [ expr $alpha / 2 ]
if { $alpha % 2 } {
set fpl [ expr int(alpha / 2) + 1]
}
set lpl [ expr $alpha - $fpl ]
# to change format of password edit following lines
set start [ aPart $fpl ]
set mid [ nPart $numeric ]
set end [aPart $lpl ]
if { $wantsymbol == 1} {
set sym [ sPart ]
set genpassword [ format "%s%s%s%s" $start $mid $end $sym ]
} else {
set genpassword [format "%s%s%s" $start $mid $end ]
}
}
#
# aPart - return randomly selected letters and vowels from the lists
#
proc aPart { slen } {
global vowels letters
set vlen [ expr [ llength $vowels ] - 1 ]
set llen [ expr [ llength $letters ] - 1 ]
for { set i 0 } { $i < $slen } { incr i } {
if { $i % 2 == 0 } {
set randid [ expr int( rand() * $llen ) ]
append ret [ lindex $letters $randid ]
} else {
set randid [ expr int( rand() * $vlen ) ]
append ret [ lindex $vowels $randid ]
}
}
return $ret
}
#
# nPart - return randomly selected digit(s) from the digit list
#
proc nPart { slen } {
global digits
set dlen [ expr [ llength $digits] - 1 ]
for { set i 0 } { $i < $slen } { incr i } {
set randid [ expr int( rand() * $dlen ) ]
append ret [ lindex $digits $randid ]
}
return $ret
}
#
# sPart - return randonly selected symbol from the list
#
proc sPart { } {
global symbols
set sylen [ expr [ llength $symbols ] - 1 ]
set randid [ expr int( rand() * $sylen ) ]
append ret [ lindex $symbols $randid ]
return $ret
}
#
# appExit - selected from menu
#
proc appExit { } {
exit
}
#
# appHelpAbout - display info about the program in new disposable window
#
proc appHelpAbout { } {
global version licence
tk_messageBox -message "Generate pronouncable passwords in form of \n\
- word, \n\
- number, \n \
- word, \n \
- optional symbol.\n\
Author: Rob Haeusler.\n\
Version: $version.\n\
Licence: $licence."
}
#
# main procedure to manage window creation and destruction
#
proc main { } {
wm withdraw .
appCreate
wm deiconify .
}
main
#---------------------------- end of program ----------------------------------
