/*************************************************************************** security.cpp - description ------------------- begin : Thu Jun 24 11:22:12 2004 copyright : (C) 2004, 2005 by Andras Mantia ***************************************************************************/ /*************************************************************************** * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU Library General Public License as * * published by the Free Software Foundation; version 2 of the License. * * * ***************************************************************************/ //qt includes #include #include #include #include //kde includes #include #include #include #include #include #include #include //app includes #include "security.h" using namespace KNS; Security::Security() { m_keysRead = false; m_gpgRunning = false; readKeys(); readSecretKeys(); } Security::~Security() { } void Security::readKeys() { if (m_gpgRunning) { TQTimer::singleShot(5, this, TQT_SLOT(readKeys())); return; } m_runMode = List; m_keys.clear(); KProcIO *readProcess=new KProcIO(); *readProcess << "gpg"<<"--no-secmem-warning"<<"--no-tty"<<"--with-colon"<<"--list-keys"; connect(readProcess, TQT_SIGNAL(processExited(KProcess *)), this, TQT_SLOT(slotProcessExited(KProcess *))); connect(readProcess, TQT_SIGNAL(readReady(KProcIO *)) ,this, TQT_SLOT(slotDataArrived(KProcIO *))); if (!readProcess->start(KProcess::NotifyOnExit, true)) KMessageBox::error(0L, i18n("Cannot start gpg and retrieve the available keys. Make sure that gpg is installed, otherwise verification of downloaded resources will not be possible.")); else m_gpgRunning = true; } void Security::readSecretKeys() { if (m_gpgRunning) { TQTimer::singleShot(5, this, TQT_SLOT(readSecretKeys())); return; } m_runMode = ListSecret; KProcIO *readProcess=new KProcIO(); *readProcess << "gpg"<<"--no-secmem-warning"<<"--no-tty"<<"--with-colon"<<"--list-secret-keys"; connect(readProcess, TQT_SIGNAL(processExited(KProcess *)), this, TQT_SLOT(slotProcessExited(KProcess *))); connect(readProcess, TQT_SIGNAL(readReady(KProcIO *)) ,this, TQT_SLOT(slotDataArrived(KProcIO *))); if (readProcess->start(KProcess::NotifyOnExit, true)) m_gpgRunning = true; } void Security::slotProcessExited(KProcess *process) { switch (m_runMode) { case ListSecret: m_keysRead = true; break; case Verify: emit validityResult(m_result); break; case Sign: emit fileSigned(m_result); break; } m_gpgRunning = false; delete process; } void Security::slotDataArrived(KProcIO *procIO) { TQString data; while (procIO->readln(data, true) != -1) { switch (m_runMode) { case List: case ListSecret: if (data.startsWith("pub") || data.startsWith("sec")) { KeyStruct key; if (data.startsWith("pub")) key.secret = false; else key.secret = true; TQStringList line = TQStringList::split(":", data, true); key.id = line[4]; TQString shortId = key.id.right(8); TQString trustStr = line[1]; key.trusted = false; if (trustStr == "u" || trustStr == "f") key.trusted = true; data = line[9]; key.mail=data.section('<', -1, -1); key.mail.truncate(key.mail.length() - 1); key.name=data.section('<',0,0); if (key.name.find("(")!=-1) key.name=key.name.section('(',0,0); m_keys[shortId] = key; } break; case Verify: data = TQString(data.section("]",1,-1)).stripWhiteSpace(); if (data.startsWith("GOODSIG")) { m_result &= SIGNED_BAD_CLEAR; m_result |= SIGNED_OK; TQString id = data.section(" ", 1 , 1).right(8); if (!m_keys.contains(id)) { m_result |= UNKNOWN; } else { m_signatureKey = m_keys[id]; } } else if (data.startsWith("NO_PUBKEY")) { m_result &= SIGNED_BAD_CLEAR; m_result |= UNKNOWN; } else if (data.startsWith("BADSIG")) { m_result |= SIGNED_BAD; TQString id = data.section(" ", 1 , 1).right(8); if (!m_keys.contains(id)) { m_result |= UNKNOWN; } else { m_signatureKey = m_keys[id]; } } else if (data.startsWith("TRUST_ULTIMATE")) { m_result &= SIGNED_BAD_CLEAR; m_result |= TRUSTED; } break; case Sign: if (data.find("passphrase.enter") != -1) { TQCString password; KeyStruct key = m_keys[m_secretKey]; int result = KPasswordDialog::getPassword(password, i18n("Enter passphrase for key 0x%1, belonging to
%2<%3>:
").arg(m_secretKey).arg(key.name).arg(key.mail)); if (result == KPasswordDialog::Accepted) { procIO->writeStdin(password, true); password.fill(' '); } else { m_result |= BAD_PASSPHRASE; slotProcessExited(procIO); return; } } else if (data.find("BAD_PASSPHRASE") != -1) { m_result |= BAD_PASSPHRASE; } break; } } } void Security::checkValidity(const TQString& filename) { m_fileName = filename; slotCheckValidity(); } void Security::slotCheckValidity() { if (!m_keysRead || m_gpgRunning) { TQTimer::singleShot(5, this, TQT_SLOT(slotCheckValidity())); return; } if (m_keys.count() == 0) { emit validityResult(-1); return; } m_result = 0; m_runMode = Verify; TQFileInfo f(m_fileName); //check the MD5 sum TQString md5sum; const char* c = ""; KMD5 context(c); TQFile file(m_fileName); if (file.open(IO_ReadOnly)) { context.reset(); context.update(TQT_TQIODEVICE_OBJECT(file)); md5sum = context.hexDigest(); file.close(); } file.setName(f.dirPath() + "/md5sum"); if (file.open(IO_ReadOnly)) { TQString md5sum_file; file.readLine(md5sum_file, 50); if (!md5sum.isEmpty() && !md5sum_file.isEmpty() && md5sum_file.startsWith(md5sum)) m_result |= MD5_OK; file.close(); } m_result |= SIGNED_BAD; m_signatureKey.id = ""; m_signatureKey.name = ""; m_signatureKey.mail = ""; m_signatureKey.trusted = false; //verify the signature KProcIO *verifyProcess=new KProcIO(); *verifyProcess<<"gpg"<<"--no-secmem-warning"<<"--status-fd=2"<<"--command-fd=0"<<"--verify" << f.dirPath() + "/signature"<< m_fileName; connect(verifyProcess, TQT_SIGNAL(processExited(KProcess *)),this, TQT_SLOT(slotProcessExited(KProcess *))); connect(verifyProcess, TQT_SIGNAL(readReady(KProcIO *)),this, TQT_SLOT(slotDataArrived(KProcIO *))); if (verifyProcess->start(KProcess::NotifyOnExit,true)) m_gpgRunning = true; else { KMessageBox::error(0L, i18n("Cannot start gpg and check the validity of the file. Make sure that gpg is installed, otherwise verification of downloaded resources will not be possible.")); emit validityResult(0); delete verifyProcess; } } void Security::signFile(const TQString &fileName) { m_fileName = fileName; slotSignFile(); } void Security::slotSignFile() { if (!m_keysRead || m_gpgRunning) { TQTimer::singleShot(5, this, TQT_SLOT(slotSignFile())); return; } TQStringList secretKeys; for (TQMap::Iterator it = m_keys.begin(); it != m_keys.end(); ++it) { if (it.data().secret) secretKeys.append(it.key()); } if (secretKeys.count() == 0) { emit fileSigned(-1); return; } m_result = 0; TQFileInfo f(m_fileName); //create the MD5 sum TQString md5sum; const char* c = ""; KMD5 context(c); TQFile file(m_fileName); if (file.open(IO_ReadOnly)) { context.reset(); context.update(TQT_TQIODEVICE_OBJECT(file)); md5sum = context.hexDigest(); file.close(); } file.setName(f.dirPath() + "/md5sum"); if (file.open(IO_WriteOnly)) { TQTextStream stream(&file); stream << md5sum; m_result |= MD5_OK; file.close(); } if (secretKeys.count() > 1) { bool ok; secretKeys = KInputDialog::getItemList(i18n("Select Signing Key"), i18n("Key used for signing:"), secretKeys, secretKeys[0], false, &ok); if (ok) m_secretKey = secretKeys[0]; else { emit fileSigned(0); return; } } else m_secretKey = secretKeys[0]; //verify the signature KProcIO *signProcess=new KProcIO(); *signProcess<<"gpg"<<"--no-secmem-warning"<<"--status-fd=2"<<"--command-fd=0"<<"--no-tty"<<"--detach-sign" << "-u" << m_secretKey << "-o" << f.dirPath() + "/signature" << m_fileName; connect(signProcess, TQT_SIGNAL(processExited(KProcess *)),this, TQT_SLOT(slotProcessExited(KProcess *))); connect(signProcess, TQT_SIGNAL(readReady(KProcIO *)),this, TQT_SLOT(slotDataArrived(KProcIO *))); m_runMode = Sign; if (signProcess->start(KProcess::NotifyOnExit,true)) m_gpgRunning = true; else { KMessageBox::error(0L, i18n("Cannot start gpg and sign the file. Make sure that gpg is installed, otherwise signing of the resources will not be possible.")); emit fileSigned(0); delete signProcess; } } #include "security.moc"