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# Copyright (C) 2001-2007 Tresys Technology, LLC
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
namespace eval Apol_MLS {
variable widgets
variable vals
}
proc Apol_MLS::create {tab_name nb} {
variable widgets
variable vals
_initializeVars
# Layout frames
set frame [$nb insert end $tab_name -text "MLS"]
set pw [PanedWindow $frame.pw -side top -weights extra]
set leftf [$pw add -weight 0]
set rightf [$pw add -weight 1]
pack $pw -fill both -expand yes
# build the left column, where one may browse sensitivities and categories
set sensbox [TitleFrame $leftf.sensbox -text "Sensitivities"]
set catsbox [TitleFrame $leftf.catsbox -text "Categories"]
pack $sensbox -fill both -expand 0
pack $catsbox -fill both -expand yes
set sensbox [Apol_Widget::makeScrolledListbox [$sensbox getframe].sens \
-height 10 -width 20 -listvar Apol_MLS::vals(senslist)]
Apol_Widget::setListboxCallbacks $sensbox \
{{"Show Sensitivity Info" {Apol_MLS::_popupSensInfo}}}
pack $sensbox -expand 1 -fill both
set catsbox [Apol_Widget::makeScrolledListbox [$catsbox getframe].cats \
-height 16 -width 20 -listvar Apol_MLS::vals(catslist)]
Apol_Widget::setListboxCallbacks $catsbox \
{{"Show Category Info" {Apol_MLS::_popupCatsInfo}}}
pack $catsbox -expand 1 -fill both
# build the search options
set optsbox [TitleFrame $rightf.optsbox -text "Search Options"]
pack $optsbox -side top -expand 0 -fill both -padx 2
set sensf [frame [$optsbox getframe].sensf]
set catsf [frame [$optsbox getframe].catsf]
pack $sensf $catsf -side left -padx 4 -pady 2 -anchor nw
set enable_sens [checkbutton $sensf.enable -text "Sensitivities" \
-variable Apol_MLS::vals(enable_sens)]
set show_cats [checkbutton $sensf.cats -text "Show levels (categories)" \
-variable Apol_MLS::vals(show_cats_too)]
trace add variable Apol_MLS::vals(enable_sens) write \
[list Apol_MLS::_toggleCheckbutton $show_cats]
pack $enable_sens -side top -anchor nw
pack $show_cats -side top -anchor nw -padx 8
set enable_cats [checkbutton $catsf.enable -text "Categories" \
-variable Apol_MLS::vals(enable_cats)]
set show_sens [checkbutton $catsf.cats -text "Show sensitivities" \
-variable Apol_MLS::vals(show_sens_too) -state disabled]
trace add variable Apol_MLS::vals(enable_cats) write \
[list Apol_MLS::_toggleCheckbutton $show_sens]
pack $enable_cats -side top -anchor nw
pack $show_sens -side top -anchor nw -padx 8
set widgets(regexp) [Apol_Widget::makeRegexpEntry [$optsbox getframe].regexpf]
pack $widgets(regexp) -side left -padx 4 -pady 2 -anchor nw
set ok [button [$optsbox getframe].ok -text "OK" -width 6 \
-command Apol_MLS::_search]
pack $ok -side right -pady 5 -padx 5 -anchor ne
# build the results box
set resultsbox [TitleFrame $rightf.resultsbox -text "Search Results"]
pack $resultsbox -expand yes -fill both -padx 2
set widgets(results) [Apol_Widget::makeSearchResults [$resultsbox getframe].results]
pack $widgets(results) -side top -expand yes -fill both
return $frame
}
proc Apol_MLS::open {ppath} {
variable vals
set q [new_apol_level_query_t]
set v [$q run $::ApolTop::policy]
$q -acquire
$q -delete
set vals(senslist) [lsort [level_vector_to_list $v]]
$v -acquire
$v -delete
set q [new_apol_cat_query_t]
set v [$q run $::ApolTop::policy]
$q -acquire
$q -delete
set vals(catslist) [lsort [cat_vector_to_list $v]]
$v -acquire
$v -delete
}
proc Apol_MLS::close {} {
variable widgets
_initializeVars
Apol_Widget::clearSearchResults $widgets(results)
}
proc Apol_MLS::getTextWidget {} {
variable widgets
return $widgets(results).tb
}
# Given a sensitivity name, return a non-empty string if that
# sensitivity is within the loaded policy. This string is the same as
# the given parameter if the name is a sensitivity; it will be the
# real sensitivity's name if the parameter is an alias. If no policy
# has been loaded then return an empty string.
proc Apol_MLS::isSensInPolicy {sens} {
variable vals
if {![ApolTop::is_policy_open]} {
return {}
}
if {[lsearch $vals(senslist) $sens] >= 0} {
return $sens
}
# try looking up aliases
foreach s $vals(senslist) {
set qpol_level_t [new_qpol_level_t $::ApolTop::qpolicy $s]
set i [$qpol_level_t get_alias_iter $::ApolTop::qpolicy]
set l [iter_to_str_list $i]
$i -acquire
$i -delete
if {[lsearch $l $sens] >= 0} {
return $s
}
}
return {}
}
#### private functions below ####
proc Apol_MLS::_initializeVars {} {
variable vals
array set vals {
senslist {} catslist {}
enable_sens 1 show_cats_too 1
enable_cats 0 show_sens_too 1
}
}
proc Apol_MLS::_toggleCheckbutton {path name1 name2 op} {
variable vals
variable widgets
if {$vals($name2)} {
$path configure -state normal
} else {
$path configure -state disabled
}
if {$vals(enable_sens) == 0 && $vals(enable_cats) == 0} {
Apol_Widget::setRegexpEntryState $widgets(regexp) 0
} else {
Apol_Widget::setRegexpEntryState $widgets(regexp) 1
}
}
proc Apol_MLS::_popupSensInfo {sens} {
Apol_Widget::showPopupText $sens [_renderLevel $sens 1]
}
proc Apol_MLS::_popupCatsInfo {cats} {
Apol_Widget::showPopupText $cats [_renderCats $cats 1]
}
proc Apol_MLS::_renderLevel {level_name show_level} {
set qpol_level_datum [new_qpol_level_t $::ApolTop::qpolicy $level_name]
set i [$qpol_level_datum get_alias_iter $::ApolTop::qpolicy]
set aliases [iter_to_str_list $i]
$i -acquire
$i -delete
set text $level_name
if {[llength $aliases] > 0} {
append text " alias \{$aliases\}"
}
if {$show_level} {
set i [$qpol_level_datum get_cat_iter $::ApolTop::qpolicy]
set num_cats [$i get_size]
$i -acquire
$i -delete
append text " ($num_cats categor"
if {$num_cats == 1} {
append text "y)"
} else {
append text "ies)"
}
set level [new_apol_mls_level_t $::ApolTop::policy $qpol_level_datum]
append text "\n level [$level render $::ApolTop::policy]\n"
$level -acquire
$level -delete
}
return $text
}
proc Apol_MLS::_renderCats {cat_name show_sens} {
set qpol_cat_datum [new_qpol_cat_t $::ApolTop::qpolicy $cat_name]
set i [$qpol_cat_datum get_alias_iter $::ApolTop::qpolicy]
set aliases [iter_to_str_list $i]
$i -acquire
$i -delete
set text $cat_name
if {[llength $aliases] > 0} {
append text " alias \{$aliases\}"
}
if {$show_sens} {
append text "\n"
set q [new_apol_level_query_t]
$q set_cat $::ApolTop::policy $cat_name
set v [$q run $::ApolTop::policy]
$q -acquire
$q -delete
set sens_list {}
for {set i 0} {$i < [$v get_size]} {incr i} {
set qpol_level_datum [qpol_level_from_void [$v get_element $i]]
set level_name [$qpol_level_datum get_name $::ApolTop::qpolicy]
set level_value [$qpol_level_datum get_value $::ApolTop::qpolicy]
lappend sens_list [list $level_name $level_value]
}
$v -acquire
$v -delete
foreach s [lsort -integer -index 1 $sens_list] {
append text " [lindex $s 0]\n"
}
}
return $text
}
proc Apol_MLS::_search {} {
variable vals
variable widgets
Apol_Widget::clearSearchResults $widgets(results)
if {![ApolTop::is_policy_open]} {
tk_messageBox -icon error -type ok -title "Error" -message "No current policy file is opened."
return
}
if {$vals(enable_sens) == 0 && $vals(enable_cats) == 0} {
tk_messageBox -icon error -type ok -title "Error" -message "No search options provided."
return
}
set results ""
set use_regexp [Apol_Widget::getRegexpEntryState $widgets(regexp)]
if {$use_regexp} {
set regexp [Apol_Widget::getRegexpEntryValue $widgets(regexp)]
if {$regexp == {}} {
tk_messageBox -icon error -type ok -title "Error" -message "No regular expression provided."
return
}
} else {
set regexp {}
}
if {$vals(enable_sens)} {
set q [new_apol_level_query_t]
$q set_sens $::ApolTop::policy $regexp
$q set_regex $::ApolTop::policy $use_regexp
set v [$q run $::ApolTop::policy]
$q -acquire
$q -delete
set level_data {}
for {set i 0} {$i < [$v get_size]} {incr i} {
set qpol_level_datum [qpol_level_from_void [$v get_element $i]]
set level_name [$qpol_level_datum get_name $::ApolTop::qpolicy]
set level_value [$qpol_level_datum get_value $::ApolTop::qpolicy]
lappend level_data [list $level_name $level_value]
}
$v -acquire
$v -delete
append results "SENSITIVITIES (ordered by dominance from low to high):"
if {[llength $level_data] == 0} {
append results "\nSearch returned no results."
} else {
foreach l [lsort -integer -index 1 $level_data] {
append results "\n[_renderLevel [lindex $l 0] $vals(show_cats_too)]"
}
}
}
if {$vals(enable_cats)} {
if {$vals(enable_sens)} {
append results "\n\n"
}
set q [new_apol_cat_query_t]
$q set_cat $::ApolTop::policy $regexp
$q set_regex $::ApolTop::policy $use_regexp
set v [$q run $::ApolTop::policy]
$q -acquire
$q -delete
set cats_data {}
for {set i 0} {$i < [$v get_size]} {incr i} {
set qpol_cat_datum [qpol_cat_from_void [$v get_element $i]]
set cat_name [$qpol_cat_datum get_name $::ApolTop::qpolicy]
set cat_value [$qpol_cat_datum get_value $::ApolTop::qpolicy]
lappend cats_data [list $cat_name $cat_value]
}
$v -acquire
$v -delete
append results "CATEGORIES (ordered by appearance within policy):"
if {[llength $cats_data] == 0} {
append results "\nSearch returned no results."
} else {
foreach c [lsort -integer -index 1 $cats_data] {
append results "\n[_renderCats [lindex $c 0] $vals(show_sens_too)]"
}
}
}
Apol_Widget::appendSearchResultText $widgets(results) $results
}
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