#!/usr/bin/wish

option add *Listbox*font {-*-courier-medium-r-*-*-*-120-*-*-m-*-*-*}

proc readPw {l} {
	global Passwords

	set fgrp [open /etc/group r]
	while {[gets $fgrp line] >= 0} {
		if {[string index $line 0] == "#"} {
			continue
		}
		set groupentry [split $line ":"]
		set Group([lindex $groupentry 2]) \
			[lindex $groupentry 0]
	}
	close $fgrp

	set fpw [open /etc/passwd r]
	while {[gets $fpw line] >= 0} {
		if {[string index $line 0] == "#"} {
			continue
		}
		set pwdentry [split $line ":"]
		if {[info exists Group([lindex $pwdentry 3])]} {
			set group $Group([lindex $pwdentry 3])
		} else {
			set group [lindex $pwdentry 3]
		}
		set fpwdentry [format "%-12s %-12s %-38s %-25s %-20s"\
			[lindex $pwdentry 0] $group \
			[lindex $pwdentry 4] [lindex $pwdentry 5] \
			[lindex $pwdentry 6]]
		set Passwords($fpwdentry) $pwdentry
		$l insert end $fpwdentry
	}
	close $fpw
}

proc newField {root label name} {
	global fieldvars

	frame ${root}.f${name}
	label ${root}.l${name} -text ${label}
	entry ${root}.e${name} -textvar ${name}
	pack ${root}.l${name} -side left -in ${root}.f${name}
	pack ${root}.e${name} -side right -in ${root}.f${name} 
	lappend fieldvars ${name}
	return ${root}.f${name}
}

proc setPw {pwd} {
	global Passwords username userid groupname groupid gcos \
		home shell

	set username [lindex $pwd 0]
	set userid [lindex $Passwords($pwd) 2]
	set groupname [lindex $pwd 1]
	set groupid [lindex $Passwords($pwd) 3]
	set gcos [lindex $Passwords($pwd) 4]
	set home [lindex $Passwords($pwd) 5]
	set shell [lindex $Passwords($pwd) 6]
}

proc showPw {} {
	if {! [winfo exists .showpw] } {
		toplevel .showpw
		frame .showpw.l
		frame .showpw.r
		lappend left [newField .showpw "Username:" username]
		lappend left [newField .showpw "User id:" userid]
		lappend left [newField .showpw "Groupname:" groupname]
		lappend left [newField .showpw "Group id:" groupid]
		lappend right [newField .showpw "GCOS:" gcos]
		lappend right [newField .showpw "Home:" home]
		lappend right [newField .showpw "Shell:" shell]

		eval pack $left -in .showpw.l -fill x
		eval pack $right -in .showpw.r -fill x
		pack .showpw.l .showpw.r -in .showpw -side left \
			-expand true
	}
	wm deiconify .showpw
	raise .showpw
}

frame .top
scrollbar .v -orient v -command ".pw yview"
scrollbar .h -orient h -command ".pw xview"
frame .dummy -width [winfo reqwidth .v] \
	-height [winfo reqheight .h]
listbox .pw -width 80 -selectmode single \
	-xscrollcommand ".h set" -yscrollcommand ".v set"
pack .pw -side left -fill both -in .top -expand true
pack .v -side left -fill y -in .top
pack .top -side top -expand true -fill both
pack .h -side left -fill x -expand true
pack .dummy -side left

bind .pw <Double-Button-1> {
	set item [%W curselection]
	setPw [%W get $item]
	showPw
}

readPw .pw