mirror of
https://github.com/SELinuxProject/setools
synced 2025-03-20 10:06:29 +00:00
335 lines
13 KiB
Python
335 lines
13 KiB
Python
# Copyright 2015, Tresys Technology, LLC
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#
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# This file is part of SETools.
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#
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# SETools is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation, either version 2.1 of
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# the License, or (at your option) any later version.
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#
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# SETools is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with SETools. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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import logging
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from PyQt5.QtCore import Qt, QSortFilterProxyModel, QStringListModel, QThread
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from PyQt5.QtGui import QPalette, QTextCursor
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from PyQt5.QtWidgets import QCompleter, QHeaderView, QMessageBox, QProgressDialog
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from setools import ConstraintQuery
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from ..logtosignal import LogHandlerToSignal
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from ..models import PermListModel, SEToolsListModel, invert_list_selection
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from ..constraintmodel import ConstraintTableModel
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from .analysistab import AnalysisTab
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from .exception import TabFieldError
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from .queryupdater import QueryResultsUpdater
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from .workspace import load_checkboxes, load_lineedits, load_listviews, load_textedits, \
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save_checkboxes, save_lineedits, save_listviews, save_textedits
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class ConstraintQueryTab(AnalysisTab):
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"""A constraint query."""
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def __init__(self, parent, policy, perm_map):
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super(ConstraintQueryTab, self).__init__(parent)
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self.log = logging.getLogger(__name__)
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self.policy = policy
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self.query = ConstraintQuery(policy)
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self.setupUi()
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def __del__(self):
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self.thread.quit()
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self.thread.wait(5000)
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logging.getLogger("setools.constraintquery").removeHandler(self.handler)
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def setupUi(self):
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self.load_ui("apol/constraintquery.ui")
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# set up user autocompletion
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user_completion_list = [str(u) for u in self.policy.users()]
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user_completer_model = QStringListModel(self)
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user_completer_model.setStringList(sorted(user_completion_list))
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self.user_completion = QCompleter()
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self.user_completion.setModel(user_completer_model)
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self.user.setCompleter(self.user_completion)
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# set up role autocompletion
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role_completion_list = [str(r) for r in self.policy.roles()]
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role_completer_model = QStringListModel(self)
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role_completer_model.setStringList(sorted(role_completion_list))
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self.role_completion = QCompleter()
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self.role_completion.setModel(role_completer_model)
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self.role.setCompleter(self.role_completion)
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# set up type autocompletion
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type_completion_list = [str(t) for t in self.policy.types()]
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type_completer_model = QStringListModel(self)
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type_completer_model.setStringList(sorted(type_completion_list))
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self.type_completion = QCompleter()
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self.type_completion.setModel(type_completer_model)
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self.type_.setCompleter(self.type_completion)
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# populate class list
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self.class_model = SEToolsListModel(self)
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self.class_model.item_list = sorted(self.policy.classes())
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self.tclass.setModel(self.class_model)
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# populate perm list
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self.perms_model = PermListModel(self, self.policy)
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self.perms.setModel(self.perms_model)
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# setup indications of errors
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self.errors = set()
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self.orig_palette = self.type_.palette()
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self.error_palette = self.type_.palette()
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self.error_palette.setColor(QPalette.Base, Qt.red)
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self.clear_user_error()
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self.clear_type_error()
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self.clear_role_error()
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# set up results
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self.table_results_model = ConstraintTableModel(self)
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self.sort_proxy = QSortFilterProxyModel(self)
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self.sort_proxy.setSourceModel(self.table_results_model)
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self.table_results.setModel(self.sort_proxy)
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self.table_results.sortByColumn(0, Qt.AscendingOrder)
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# set up processing thread
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self.thread = QThread()
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self.worker = QueryResultsUpdater(self.query, self.table_results_model)
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self.worker.moveToThread(self.thread)
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self.worker.raw_line.connect(self.raw_results.appendPlainText)
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self.worker.finished.connect(self.update_complete)
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self.worker.finished.connect(self.thread.quit)
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self.thread.started.connect(self.worker.update)
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# create a "busy, please wait" dialog
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self.busy = QProgressDialog(self)
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self.busy.setModal(True)
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self.busy.setRange(0, 0)
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self.busy.setMinimumDuration(0)
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self.busy.canceled.connect(self.thread.requestInterruption)
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self.busy.reset()
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# update busy dialog from query INFO logs
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self.handler = LogHandlerToSignal()
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self.handler.message.connect(self.busy.setLabelText)
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logging.getLogger("setools.constraintquery").addHandler(self.handler)
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# Ensure settings are consistent with the initial .ui state
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self.set_user_regex(self.user_regex.isChecked())
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self.set_role_regex(self.role_regex.isChecked())
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self.set_type_regex(self.type_regex.isChecked())
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self.criteria_frame.setHidden(not self.criteria_expander.isChecked())
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self.notes.setHidden(not self.notes_expander.isChecked())
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# MLS constraints available only if policy is MLS
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if not self.policy.mls:
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self.mlsconstrain.setEnabled(False)
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self.mlsvalidatetrans.setEnabled(False)
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self.mlsconstrain.setToolTip("MLS is disabled in this policy.")
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self.mlsvalidatetrans.setToolTip("MLS is disabled in this policy.")
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# connect signals
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self.buttonBox.clicked.connect(self.run)
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self.clear_ruletypes.clicked.connect(self.clear_all_ruletypes)
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self.all_ruletypes.clicked.connect(self.set_all_ruletypes)
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self.user.textEdited.connect(self.clear_user_error)
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self.user.editingFinished.connect(self.set_user)
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self.user_regex.toggled.connect(self.set_user_regex)
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self.role.textEdited.connect(self.clear_role_error)
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self.role.editingFinished.connect(self.set_role)
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self.role_regex.toggled.connect(self.set_role_regex)
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self.type_.textEdited.connect(self.clear_type_error)
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self.type_.editingFinished.connect(self.set_type)
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self.type_regex.toggled.connect(self.set_type_regex)
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self.tclass.selectionModel().selectionChanged.connect(self.set_tclass)
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self.invert_class.clicked.connect(self.invert_tclass_selection)
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self.perms.selectionModel().selectionChanged.connect(self.set_perms)
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self.invert_perms.clicked.connect(self.invert_perms_selection)
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#
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# Ruletype criteria
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#
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def _set_ruletypes(self, value):
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self.constrain.setChecked(value)
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self.validatetrans.setChecked(value)
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if self.policy.mls:
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self.mlsconstrain.setChecked(value)
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self.mlsvalidatetrans.setChecked(value)
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def set_all_ruletypes(self):
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self._set_ruletypes(True)
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def clear_all_ruletypes(self):
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self._set_ruletypes(False)
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#
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# Class criteria
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#
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def set_tclass(self):
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selected_classes = []
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for index in self.tclass.selectionModel().selectedIndexes():
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selected_classes.append(self.class_model.data(index, Qt.UserRole))
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self.query.tclass = selected_classes
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self.perms_model.set_classes(selected_classes)
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def invert_tclass_selection(self):
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invert_list_selection(self.tclass.selectionModel())
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#
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# Permissions criteria
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#
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def set_perms(self):
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selected_perms = []
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for index in self.perms.selectionModel().selectedIndexes():
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selected_perms.append(self.perms_model.data(index, Qt.UserRole))
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self.query.perms = selected_perms
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def invert_perms_selection(self):
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invert_list_selection(self.perms.selectionModel())
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#
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# User criteria
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#
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def clear_user_error(self):
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self.clear_criteria_error(self.user,
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"Match constraints that have a user in the expression.")
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def set_user(self):
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try:
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self.query.user = self.user.text()
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except Exception as ex:
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self.log.error("User error: {0}".format(ex))
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self.set_criteria_error(self.user, ex)
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def set_user_regex(self, state):
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self.log.debug("Setting user_regex {0}".format(state))
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self.query.user_regex = state
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self.clear_user_error()
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self.set_user()
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#
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# Role criteria
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#
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def clear_role_error(self):
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self.clear_criteria_error(self.role,
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"Match constraints that have a role in the expression.")
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def set_role(self):
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try:
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self.query.role = self.role.text()
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except Exception as ex:
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self.log.error("Role error: {0}".format(ex))
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self.set_criteria_error(self.role, ex)
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def set_role_regex(self, state):
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self.log.debug("Setting role_regex {0}".format(state))
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self.query.role_regex = state
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self.clear_role_error()
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self.set_role()
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#
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# Type criteria
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#
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def clear_type_error(self):
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self.clear_criteria_error(self.type_,
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"Match constraints that have a type in the expression.")
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def set_type(self):
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try:
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self.query.type_ = self.type_.text()
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except Exception as ex:
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self.log.error("Type error: {0}".format(ex))
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self.set_criteria_error(self.type_, ex)
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def set_type_regex(self, state):
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self.log.debug("Setting type_regex {0}".format(state))
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self.query.type_regex = state
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self.clear_type_error()
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self.set_type()
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#
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# Save/Load tab
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#
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def save(self):
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"""Return a dictionary of settings."""
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if self.errors:
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raise TabFieldError("Field(s) are in error: {0}".
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format(" ".join(o.objectName() for o in self.errors)))
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settings = {}
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save_checkboxes(self, settings, ["criteria_expander", "notes_expander", "constrain",
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"mlsconstrain", "validatetrans", "mlsvalidatetrans",
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"user_regex", "role_regex", "type_regex", "perms_subset"])
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save_lineedits(self, settings, ["user", "role", "type_"])
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save_listviews(self, settings, ["tclass", "perms"])
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save_textedits(self, settings, ["notes"])
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return settings
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def load(self, settings):
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load_checkboxes(self, settings, ["criteria_expander", "notes_expander", "constrain",
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"mlsconstrain", "validatetrans", "mlsvalidatetrans",
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"user_regex", "role_regex", "type_regex", "perms_subset"])
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load_lineedits(self, settings, ["user", "role", "type_"])
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load_listviews(self, settings, ["tclass", "perms"])
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load_textedits(self, settings, ["notes"])
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#
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# Results runner
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#
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def run(self, button):
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# right now there is only one button.
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rule_types = []
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for mode in [self.constrain, self.mlsconstrain, self.validatetrans, self.mlsvalidatetrans]:
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if mode.isChecked():
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rule_types.append(mode.objectName())
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self.query.ruletype = rule_types
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self.query.perms_subset = self.perms_subset.isChecked()
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# start processing
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self.busy.setLabelText("Processing query...")
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self.busy.show()
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self.raw_results.clear()
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self.thread.start()
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def update_complete(self, count):
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self.log.info("{0} constraint(s) found.".format(count))
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# update sizes/location of result displays
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if not self.busy.wasCanceled():
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self.busy.setLabelText("Resizing the result table's columns; GUI may be unresponsive")
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self.busy.repaint()
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self.table_results.resizeColumnsToContents()
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# If the permissions or expression column widths are too long, pull back
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# to a reasonable size
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header = self.table_results.horizontalHeader()
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if header.sectionSize(2) > 400:
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header.resizeSection(2, 400)
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if header.sectionSize(3) > 400:
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header.resizeSection(3, 400)
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if not self.busy.wasCanceled():
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self.busy.setLabelText("Resizing the result table's rows; GUI may be unresponsive")
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self.busy.repaint()
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self.table_results.resizeRowsToContents()
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if not self.busy.wasCanceled():
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self.busy.setLabelText("Moving the raw result to top; GUI may be unresponsive")
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self.busy.repaint()
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self.raw_results.moveCursor(QTextCursor.Start)
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self.busy.reset()
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