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