"""
Select Provider Page, used in First Run Wizard
"""
from functools import partial
import logging
import requests
from PyQt4 import QtCore
from PyQt4 import QtGui
from leap.base import exceptions as baseexceptions
#from leap.crypto import certs
from leap.eip import exceptions as eipexceptions
from leap.gui.constants import APP_LOGO
from leap.gui.progress import InlineValidationPage
from leap.gui import styles
from leap.util.web import get_https_domain_and_port
logger = logging.getLogger(__name__)
# XXX check newer version in progress...
def delay(obj, method_str):
"""
this is a hack to get responsiveness in the ui
"""
QtCore.QTimer().singleShot(
10,
lambda: QtCore.QMetaObject.invokeMethod(
obj, method_str))
class SelectProviderPage(InlineValidationPage):
#disableCheckButton = QtCore.pyqtSignal()
launchChecks = QtCore.pyqtSignal()
def __init__(self, parent=None, providers=None):
super(SelectProviderPage, self).__init__(parent)
self.setTitle(self.tr("Enter Provider"))
self.setSubTitle(self.tr(
"Please enter the domain of the provider you want "
"to use for your connection.")
)
self.setPixmap(
QtGui.QWizard.LogoPixmap,
QtGui.QPixmap(APP_LOGO))
self.did_cert_check = False
self.current_page = 'providerselection'
self.is_done = False
self.setupSteps()
self.setupUI()
self.launchChecks.connect(
self.launch_checks)
def setupUI(self):
"""
initializes the UI
"""
providerNameLabel = QtGui.QLabel("h&ttps://")
# note that we expect the bare domain name
# we will add the scheme later
providerNameEdit = QtGui.QLineEdit()
providerNameEdit.cursorPositionChanged.connect(
self.reset_validation_status)
providerNameLabel.setBuddy(providerNameEdit)
# add regex validator
providerDomainRe = QtCore.QRegExp(r"^[a-z\d_-.]+$")
providerNameEdit.setValidator(
QtGui.QRegExpValidator(providerDomainRe, self))
self.providerNameEdit = providerNameEdit
# Eventually we will seed a list of
# well known providers here.
#providercombo = QtGui.QComboBox()
#if providers:
#for provider in providers:
#providercombo.addItem(provider)
#providerNameSelect = providercombo
self.registerField("provider_domain*", self.providerNameEdit)
#self.registerField('provider_name_index', providerNameSelect)
validationMsg = QtGui.QLabel("")
validationMsg.setStyleSheet(styles.ErrorLabelStyleSheet)
self.validationMsg = validationMsg
providerCheckButton = QtGui.QPushButton(self.tr("chec&k"))
self.providerCheckButton = providerCheckButton
# cert info
# this is used in the callback
# for the checkbox changes.
# tricky, since the first time came
# from the exception message.
# should get string from exception too!
self.bad_cert_status = self.tr(
"Server certificate could not be verified.")
self.certInfo = QtGui.QLabel("")
self.certInfo.setWordWrap(True)
self.certWarning = QtGui.QLabel("")
self.trustProviderCertCheckBox = QtGui.QCheckBox(
"&Trust this provider certificate.")
self.trustProviderCertCheckBox.stateChanged.connect(
self.onTrustCheckChanged)
self.providerNameEdit.textChanged.connect(
self.onProviderChanged)
self.providerCheckButton.clicked.connect(
self.onCheckButtonClicked)
layout = QtGui.QGridLayout()
layout.addWidget(validationMsg, 0, 2)
layout.addWidget(providerNameLabel, 1, 1)
layout.addWidget(providerNameEdit, 1, 2)
layout.addWidget(providerCheckButton, 1, 3)
# add certinfo group
# XXX not shown now. should move to validation box.
#layout.addWidget(certinfoGroup, 4, 1, 4, 2)
#self.certinfoGroup = certinfoGroup
#self.certinfoGroup.hide()
# add validation frame
self.setupValidationFrame()
layout.addWidget(self.valFrame, 4, 2, 4, 2)
self.valFrame.hide()
self.setLayout(layout)
# certinfo
def setupCertInfoGroup(self):
# XXX not used now.
certinfoGroup = QtGui.QGroupBox(
self.tr("Certificate validation"))
certinfoLayout = QtGui.QVBoxLayout()
certinfoLayout.addWidget(self.certInfo)
certinfoLayout.addWidget(self.certWarning)
certinfoLayout.addWidget(self.trustProviderCertCheckBox)
certinfoGroup.setLayout(certinfoLayout)
self.certinfoGroup = self.certinfoGroup
# progress frame
def setupValidationFrame(self):
qframe = QtGui.QFrame
valFrame = qframe()
valFrame.setFrameStyle(qframe.NoFrame)
valframeLayout = QtGui.QVBoxLayout()
zeros = (0, 0, 0, 0)
valframeLayout.setContentsMargins(*zeros)
valframeLayout.addWidget(self.stepsTableWidget)
valFrame.setLayout(valframeLayout)
self.valFrame = valFrame
@QtCore.pyqtSlot()
def onDisableCheckButton(self):
print 'CHECK BUTTON DISABLED!!!'
self.providerCheckButton.setDisabled(True)
@QtCore.pyqtSlot()
def launch_checks(self):
self.do_checks()
def onCheckButtonClicked(self):
QtCore.QMetaObject.invokeMethod(
self, "onDisableCheckButton")
QtCore.QMetaObject.invokeMethod(
self, "showStepsFrame")
delay(self, "launch_checks")
def _do_checks(self):
"""
generator that yields actual checks
that are executed in a separate thread
"""
wizard = self.wizard()
curpage = "providerselection"
full_domain = self.providerNameEdit.text()
# we check if we have a port in the domain string.
domain, port = get_https_domain_and_port(full_domain)
_domain = u"%s:%s" % (domain, port) if port != 443 else unicode(domain)
netchecker = wizard.netchecker()
providercertchecker = wizard.providercertchecker()
eipconfigchecker = wizard.eipconfigchecker(domain=_domain)
def fail():
self.is_done = False
return False
yield(("head_sentinel", 0), lambda: None)
########################
# 1) try name resolution
########################
def namecheck():
"""
in which we check if
we are able to name resolve
this domain
"""
try:
netchecker.check_name_resolution(
domain)
except baseexceptions.LeapException as exc:
logger.error(exc.message)
wizard.set_validation_error(
curpage, exc.usermessage)
return fail()
except Exception as exc:
wizard.set_validation_error(
curpage, exc.message)
return fail()
else:
return True
logger.debug('checking name resolution')
yield(("check name", 20), namecheck)
#########################
# 2) try https connection
#########################
def httpscheck():
"""
in which we check
if the provider
is offering service over
https
"""
try:
providercertchecker.is_https_working(
"https://%s" % _domain,
verify=True)
except eipexceptions.HttpsBadCertError as exc:
logger.debug('exception')
# XXX skipping for now...
##############################################
# We had this validation logic
# in the provider selection page before
##############################################
#if self.trustProviderCertCheckBox.isChecked():
#pass
#else:
wizard.set_validation_error(
curpage, exc.usermessage)
#fingerprint = certs.get_cert_fingerprint(
#domain=domain, sep=" ")
# it's ok if we've trusted this fgprt before
#trustedcrts = wizard.trusted_certs
#if trustedcrts and \
# fingerprint.replace(' ', '') in trustedcrts:
#pass
#else:
# let your user face panick :P
#self.add_cert_info(fingerprint)
#self.did_cert_check = True
#self.completeChanged.emit()
#return False
return fail()
except baseexceptions.LeapException as exc:
wizard.set_validation_error(
curpage, exc.usermessage)
return fail()
except Exception as exc:
wizard.set_validation_error(
curpage, exc.message)
return fail()
else:
return True
logger.debug('checking https connection')
yield(("https check", 40), httpscheck)
##################################
# 3) try download provider info...
##################################
def fetchinfo():
try:
# XXX we already set _domain in the initialization
# so it should not be needed here.
eipconfigchecker.fetch_definition(domain=_domain)
wizard.set_providerconfig(
eipconfigchecker.defaultprovider.config)
except requests.exceptions.SSLError:
# XXX we should have catched this before.
# but cert checking is broken.
wizard.set_validation_error(
curpage,
self.tr(
"Could not get info from provider."))
return fail()
except requests.exceptions.ConnectionError:
wizard.set_validation_error(
curpage,
self.tr(
"Could not download provider info "
"(refused conn.)."))
return fail()
except Exception as exc:
wizard.set_validation_error(
curpage, exc.message)
return fail()
else:
return True
yield(("fetch info", 80), fetchinfo)
# done!
self.is_done = True
yield(("end_sentinel", 100), lambda: None)
def _inline_validation_ready(self):
"""
called after _do_checks has finished.
"""
self.domain_checked = True
if self.is_done:
self.wizard().clean_validation_error(self.current_page)
self.completeChanged.emit()
# cert trust verification
# (disabled for now)
def is_insecure_cert_trusted(self):
return self.trustProviderCertCheckBox.isChecked()
def onTrustCheckChanged(self, state):
checked = False
if state == 2:
checked = True
if checked:
self.reset_validation_status()
else:
self.set_validation_status(self.bad_cert_status)
# trigger signal to redraw next button
self.completeChanged.emit()
def add_cert_info(self, certinfo):
self.certWarning.setText(
"Do you want to <b>trust this provider certificate?</b>")
self.certInfo.setText(
'SHA-256 fingerprint: <i>%s</i><br>' % certinfo)
self.certInfo.setWordWrap(True)
self.certinfoGroup.show()
def onProviderChanged(self, text):
self.is_done = False
provider = self.providerNameEdit.text()
if provider:
self.providerCheckButton.setDisabled(False)
else:
self.providerCheckButton.setDisabled(True)
self.completeChanged.emit()
def reset_validation_status(self):
"""
empty the validation msg
and clean the inline validation widget.
"""
self.validationMsg.setText('')
self.steps.removeAllSteps()
self.clearTable()
self.domain_checked = False
# pagewizard methods
def isComplete(self):
provider = self.providerNameEdit.text()
if not self.is_done:
return False
if not provider:
return False
else:
if self.is_insecure_cert_trusted():
return True
if not self.did_cert_check:
if self.is_done:
# XXX sure?
return True
return False
def populateErrors(self):
# XXX could move this to ValidationMixin
# with some defaults for the validating fields
# (now it only allows one field, manually specified)
#logger.debug('getting errors')
errors = self.wizard().get_validation_error(
self.current_page)
if errors:
bad_str = getattr(self, 'bad_string', None)
cur_str = self.providerNameEdit.text()
showerr = self.validationMsg.setText
markred = lambda: self.providerNameEdit.setStyleSheet(
styles.ErrorLineEdit)
umarkrd = lambda: self.providerNameEdit.setStyleSheet(
styles.RegularLineEdit)
if bad_str is None:
# first time we fall here.
# save the current bad_string value
self.bad_string = cur_str
showerr(errors)
markred()
else:
# not the first time
# XXX hey, this is getting convoluted.
# roll out this.
# but be careful about all the possibilities
# with going back and forth once you
# enter a domain.
if cur_str == bad_str:
showerr(errors)
markred()
else:
if not getattr(self, 'domain_checked', None):
showerr('')
umarkrd()
else:
self.bad_string = cur_str
showerr(errors)
def cleanup_errormsg(self):
"""
we reset bad_string to None
should be called before leaving the page
"""
self.bad_string = None
self.domain_checked = False
def paintEvent(self, event):
"""
we hook our populate errors
on paintEvent because we need it to catch
when user enters the page coming from next,
and initializePage does not cover that case.
Maybe there's a better event to hook upon.
"""
super(SelectProviderPage, self).paintEvent(event)
self.populateErrors()
def initializePage(self):
self.validationMsg.setText('')
if hasattr(self, 'certinfoGroup'):
# XXX remove ?
self.certinfoGroup.hide()
self.is_done = False
self.providerCheckButton.setDisabled(True)
self.valFrame.hide()
self.steps.removeAllSteps()
self.clearTable()
def validatePage(self):
# some cleanup before we leave the page
self.cleanup_errormsg()
# go
return True
def nextId(self):
wizard = self.wizard()
if not wizard:
return
return wizard.get_page_index('providerinfo')