E5Network/E5SslCertificatesInfoWidget.py

changeset 2432
b1a2f9054b28
parent 2359
ef81d2d0a031
child 2525
8b507a9a2d40
child 2578
f181c1420148
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/E5Network/E5SslCertificatesInfoWidget.py	Sun Feb 24 20:00:51 2013 +0100
@@ -0,0 +1,195 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2010 - 2013 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a widget to show SSL certificate infos.
+"""
+
+from PyQt4.QtCore import pyqtSlot, QCryptographicHash, QDateTime, qVersion
+from PyQt4.QtGui import QWidget
+from PyQt4.QtNetwork import QSslCertificate
+
+from .Ui_E5SslCertificatesInfoWidget import Ui_E5SslCertificatesInfoWidget
+
+import Utilities
+
+
+class E5SslCertificatesInfoWidget(QWidget, Ui_E5SslCertificatesInfoWidget):
+    """
+    Class implementing a widget to show SSL certificate infos.
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent reference to the parent widget (QWidget)
+        """
+        super().__init__(parent)
+        self.setupUi(self)
+        
+        self.__chain = []
+    
+    def showCertificateChain(self, certificateChain):
+        """
+        Public method to show the SSL certificates of a certificate chain.
+        
+        @param certificateChain list od SSL certificates (list of QSslCertificate)
+        """
+        self.chainLabel.show()
+        self.chainComboBox.show()
+        self.chainComboBox.clear()
+        
+        self.__chain = certificateChain[:]
+        
+        for cert in self.__chain:
+            name = cert.subjectInfo(QSslCertificate.CommonName)
+            if not name:
+                name = cert.subjectInfo(QSslCertificate.Organization)
+            if not name:
+                name = cert.serialNumber()
+            self.chainComboBox.addItem(name)
+        
+        self.on_chainComboBox_activated(0)
+    
+    def showCertificate(self, certificate):
+        """
+        Public method to show the SSL certificate information.
+        
+        @param certificate reference to the SSL certificate (QSslCertificate)
+        """
+        self.chainLabel.hide()
+        self.chainComboBox.hide()
+        self.chainComboBox.clear()
+        
+        self.__chain = []
+        
+        self.__showCertificate(certificate)
+    
+    def __showCertificate(self, certificate):
+        """
+        Public method to show the  SSL certificate information.
+        
+        @param certificate reference to the SSL certificate (QSslCertificate)
+        """
+        self.blacklistedLabel.setVisible(False)
+        self.blacklistedLabel.setStyleSheet(
+            "QLabel { color : white; background-color : red; }")
+        self.expiredLabel.setVisible(False)
+        self.expiredLabel.setStyleSheet(
+            "QLabel { color : white; background-color : red; }")
+        
+        if qVersion() >= "5.0.0":
+            self.subjectCommonNameLabel.setText(self.__certificateString(
+                ", ".join(certificate.subjectInfo(QSslCertificate.CommonName))))
+            self.subjectOrganizationLabel.setText(self.__certificateString(
+                ", ".join(certificate.subjectInfo(QSslCertificate.Organization))))
+            self.subjectOrganizationalUnitLabel.setText(self.__certificateString(
+                ", ".join(
+                    certificate.subjectInfo(QSslCertificate.OrganizationalUnitName))))
+            self.issuerCommonNameLabel.setText(self.__certificateString(
+                ", ".join(certificate.issuerInfo(QSslCertificate.CommonName))))
+            self.issuerOrganizationLabel.setText(self.__certificateString(
+                ", ".join(certificate.issuerInfo(QSslCertificate.Organization))))
+            self.issuerOrganizationalUnitLabel.setText(self.__certificateString(
+                ", ".join(certificate.issuerInfo(QSslCertificate.OrganizationalUnitName))))
+        else:
+            self.subjectCommonNameLabel.setText(self.__certificateString(
+                certificate.subjectInfo(QSslCertificate.CommonName)))
+            self.subjectOrganizationLabel.setText(self.__certificateString(
+                certificate.subjectInfo(QSslCertificate.Organization)))
+            self.subjectOrganizationalUnitLabel.setText(self.__certificateString(
+                certificate.subjectInfo(QSslCertificate.OrganizationalUnitName)))
+            self.issuerCommonNameLabel.setText(self.__certificateString(
+                certificate.issuerInfo(QSslCertificate.CommonName)))
+            self.issuerOrganizationLabel.setText(self.__certificateString(
+                certificate.issuerInfo(QSslCertificate.Organization)))
+            self.issuerOrganizationalUnitLabel.setText(self.__certificateString(
+                certificate.issuerInfo(QSslCertificate.OrganizationalUnitName)))
+        self.serialNumberLabel.setText(self.__serialNumber(certificate))
+        self.effectiveLabel.setText(
+            certificate.effectiveDate().toString("yyyy-MM-dd"))
+        self.expiresLabel.setText(
+            certificate.expiryDate().toString("yyyy-MM-dd"))
+        self.sha1Label.setText(self.__formatHexString(
+            str(certificate.digest(QCryptographicHash.Sha1).toHex(), encoding="ascii")))
+        self.md5Label.setText(self.__formatHexString(
+            str(certificate.digest(QCryptographicHash.Md5).toHex(), encoding="ascii")))
+        
+        if (qVersion() >= "5.0.0" and certificate.isBlacklisted()) or \
+           (qVersion() < "5.0.0" and not certificate.isValid()):
+            # something is wrong; indicate it to the user
+            if self.__hasExpired(certificate.effectiveDate(), certificate.expiryDate()):
+                self.expiredLabel.setVisible(True)
+            else:
+                self.blacklistedLabel.setVisible(True)
+    
+    def __certificateString(self, txt):
+        """
+        Private method to prepare some text for display.
+        
+        @param txt text to be displayed (string)
+        @return prepared text (string)
+        """
+        if txt is None or txt == "":
+            return self.trUtf8("<not part of the certificate>")
+        
+        return Utilities.decodeString(txt)
+    
+    def __serialNumber(self, cert):
+        """
+        Private slot to format the certificate serial number.
+        
+        @param cert reference to the SSL certificate (QSslCertificate)
+        @return formated serial number (string)
+        """
+        serial = cert.serialNumber()
+        if serial == "":
+            return self.trUtf8("<not part of the certificate>")
+        
+        if ':' in serial:
+            return str(serial, encoding="ascii").upper()
+        else:
+            hexString = hex(int(serial))[2:]
+            return self.__formatHexString(hexString)
+    
+    def __formatHexString(self, hexString):
+        """
+        Private method to format a hex string for display.
+        
+        @param hexString hex string to be formatted (string)
+        @return formatted string (string)
+        """
+        hexString = hexString.upper()
+        
+        if len(hexString) % 2 == 1:
+            hexString = '0' + hexString
+        
+        hexList = []
+        while hexString:
+            hexList.append(hexString[:2])
+            hexString = hexString[2:]
+        
+        return ':'.join(hexList)
+    
+    def __hasExpired(self, effectiveDate, expiryDate):
+        """
+        Private method to check for a certificate expiration.
+        
+        @param effectiveDate date the certificate becomes effective (QDateTime)
+        @param expiryDate date the certificate expires (QDateTime)
+        @return flag indicating the expiration status (boolean)
+        """
+        now = QDateTime.currentDateTime()
+        
+        return now < effectiveDate or now >= expiryDate
+    
+    @pyqtSlot(int)
+    def on_chainComboBox_activated(self, index):
+        """
+        Private slot to show the certificate info for the selected entry.
+        
+        @param index number of the certificate in the certificate chain (integer)
+        """
+        self.__showCertificate(self.__chain[index])

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