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346 lines
9.9 KiB
346 lines
9.9 KiB
/* This file is part of the KDE project
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*
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* Copyright (C) 2000 George Staikos <staikos@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <pwd.h>
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#include <unistd.h>
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#include <tqfile.h>
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#include <tqsortedlist.h>
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#include "ksslsettings.h"
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#include <tdeglobal.h>
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#include <kstandarddirs.h>
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#include <kdebug.h>
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// this hack provided by Malte Starostik to avoid glibc/openssl bug
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// on some systems
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#ifdef KSSL_HAVE_SSL
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#define crypt _openssl_crypt
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#include <openssl/ssl.h>
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#undef crypt
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#endif
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#include <kopenssl.h>
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class CipherNode {
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public:
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CipherNode(const char *_name, int _keylen) :
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name(_name), keylen(_keylen) {}
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TQString name;
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int keylen;
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inline int operator==(CipherNode &x)
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{ return ((x.keylen == keylen) && (x.name == name)); }
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inline int operator< (CipherNode &x) { return keylen < x.keylen; }
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inline int operator<=(CipherNode &x) { return keylen <= x.keylen; }
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inline int operator> (CipherNode &x) { return keylen > x.keylen; }
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inline int operator>=(CipherNode &x) { return keylen >= x.keylen; }
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};
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class KSSLSettingsPrivate {
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public:
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KSSLSettingsPrivate() {
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kossl = NULL; // try to delay this as long as possible
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}
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~KSSLSettingsPrivate() {
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}
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KOSSL *kossl;
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bool m_bUseEGD;
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bool m_bUseEFile;
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TQString m_EGDPath;
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bool m_bSendX509;
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bool m_bPromptX509;
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};
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//
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// FIXME
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// Implementation note: for now, we only read cipher settings from disk,
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// and do not store them in memory. This should change.
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//
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KSSLSettings::KSSLSettings(bool readConfig) {
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d = new KSSLSettingsPrivate;
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m_cfg = new TDEConfig("cryptodefaults", false, false);
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if (!TDEGlobal::dirs()->addResourceType("kssl", TDEStandardDirs::kde_default("data") + "kssl")) {
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//kdDebug(7029) << "Error adding (kssl, share/apps/kssl)" << endl;
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}
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if (readConfig) load();
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}
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// we don't save settings incase it was a temporary object
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KSSLSettings::~KSSLSettings() {
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delete m_cfg;
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delete d;
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}
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bool KSSLSettings::sslv2() const {
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return m_bUseSSLv2;
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}
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bool KSSLSettings::sslv3() const {
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return m_bUseSSLv3;
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}
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bool KSSLSettings::tlsv1() const {
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return m_bUseTLSv1;
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}
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// FIXME: we should make a default list available if this fails
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// since OpenSSL seems to just choose any old thing if it's given an
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// empty list. This behavior is not confirmed though.
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TQString KSSLSettings::getCipherList() {
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TQString clist;
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#ifdef KSSL_HAVE_SSL
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TQString tcipher;
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bool firstcipher = true;
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SSL_METHOD *meth = 0L;
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TQPtrList<CipherNode> cipherList;
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cipherList.setAutoDelete(true);
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if (!d->kossl)
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d->kossl = KOSSL::self();
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if (m_bUseSSLv3 && m_bUseSSLv2)
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meth = d->kossl->TLS_client_method();
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else if(m_bUseSSLv3)
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meth = d->kossl->SSLv3_client_method();
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else if (m_bUseSSLv2)
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meth = d->kossl->SSLv2_client_method();
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SSL_CTX *ctx = d->kossl->SSL_CTX_new(meth);
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SSL* ssl = d->kossl->SSL_new(ctx);
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STACK_OF(SSL_CIPHER)* sk = d->kossl->SSL_get_ciphers(ssl);
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int cnt = d->kossl->OPENSSL_sk_num(sk);
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for (int i=0; i< cnt; i++) {
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SSL_CIPHER *sc = reinterpret_cast<SSL_CIPHER*>(d->kossl->OPENSSL_sk_value(sk,i));
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if (!sc)
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break;
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if(!strcmp("SSLv2", d->kossl->SSL_CIPHER_get_version(sc)))
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m_cfg->setGroup("SSLv2");
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else
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m_cfg->setGroup("SSLv3");
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tcipher.sprintf("cipher_%s", d->kossl->SSL_CIPHER_get_name(sc));
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int bits = d->kossl->SSL_CIPHER_get_bits(sc, NULL);
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if (m_cfg->readBoolEntry(tcipher, bits >= 56)) {
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CipherNode *xx = new CipherNode(d->kossl->SSL_CIPHER_get_name(sc),bits);
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if (!cipherList.contains(xx))
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cipherList.prepend(xx);
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else
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delete xx;
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}
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}
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d->kossl->SSL_free(ssl);
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d->kossl->SSL_CTX_free(ctx);
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// Remove any ADH ciphers as per RFC2246
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// Also remove NULL ciphers and 168bit ciphers
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for (unsigned int i = 0; i < cipherList.count(); i++) {
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CipherNode *j = 0L;
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while ((j = cipherList.at(i)) != 0L) {
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if (j->name.contains("ADH-") || j->name.contains("NULL-") || j->name.contains("DES-CBC3-SHA") || j->name.contains("FZA")) {
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cipherList.remove(j);
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} else {
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break;
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}
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}
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}
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// now assemble the list cipher1:cipher2:cipher3:...:ciphern
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while (!cipherList.isEmpty()) {
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if (firstcipher)
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firstcipher = false;
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else clist.append(":");
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clist.append(cipherList.getLast()->name);
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cipherList.removeLast();
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} // while
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kdDebug(7029) << "Cipher list is: " << clist << endl;
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#endif
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return clist;
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}
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// FIXME - sync these up so that we can use them with the control module!!
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void KSSLSettings::load() {
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m_cfg->reparseConfiguration();
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m_cfg->setGroup("TLS");
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m_bUseTLSv1 = m_cfg->readBoolEntry("Enabled", true);
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#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(OPENSSL_NO_SSL2)
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m_bUseSSLv2 = false;
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#else
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m_cfg->setGroup("SSLv2");
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m_bUseSSLv2 = m_cfg->readBoolEntry("Enabled", false);
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#endif
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#if defined(OPENSSL_NO_SSL3)
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m_bUseSSLv3 = false;
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#else
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m_cfg->setGroup("SSLv3");
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m_bUseSSLv3 = m_cfg->readBoolEntry("Enabled", true);
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#endif
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m_cfg->setGroup("Warnings");
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m_bWarnOnEnter = m_cfg->readBoolEntry("OnEnter", false);
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m_bWarnOnLeave = m_cfg->readBoolEntry("OnLeave", true);
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m_bWarnOnUnencrypted = m_cfg->readBoolEntry("OnUnencrypted", true);
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m_bWarnOnMixed = m_cfg->readBoolEntry("OnMixed", true);
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m_cfg->setGroup("Validation");
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m_bWarnSelfSigned = m_cfg->readBoolEntry("WarnSelfSigned", true);
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m_bWarnExpired = m_cfg->readBoolEntry("WarnExpired", true);
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m_bWarnRevoked = m_cfg->readBoolEntry("WarnRevoked", true);
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m_cfg->setGroup("EGD");
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d->m_bUseEGD = m_cfg->readBoolEntry("UseEGD", false);
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d->m_bUseEFile = m_cfg->readBoolEntry("UseEFile", false);
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d->m_EGDPath = m_cfg->readPathEntry("EGDPath");
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m_cfg->setGroup("Auth");
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d->m_bSendX509 = ("send" == m_cfg->readEntry("AuthMethod", ""));
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d->m_bPromptX509 = ("prompt" == m_cfg->readEntry("AuthMethod", ""));
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#ifdef KSSL_HAVE_SSL
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#endif
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}
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void KSSLSettings::defaults() {
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m_bUseTLSv1 = true;
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m_bUseSSLv2 = false;
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m_bUseSSLv3 = true;
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m_bWarnOnEnter = false;
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m_bWarnOnLeave = true;
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m_bWarnOnUnencrypted = true;
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m_bWarnOnMixed = true;
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m_bWarnSelfSigned = true;
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m_bWarnExpired = true;
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m_bWarnRevoked = true;
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d->m_bUseEGD = false;
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d->m_bUseEFile = false;
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d->m_EGDPath = "";
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}
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void KSSLSettings::save() {
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m_cfg->setGroup("TLS");
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m_cfg->writeEntry("Enabled", m_bUseTLSv1);
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m_cfg->setGroup("SSLv2");
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m_cfg->writeEntry("Enabled", m_bUseSSLv2);
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m_cfg->setGroup("SSLv3");
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m_cfg->writeEntry("Enabled", m_bUseSSLv3);
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m_cfg->setGroup("Warnings");
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m_cfg->writeEntry("OnEnter", m_bWarnOnEnter);
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m_cfg->writeEntry("OnLeave", m_bWarnOnLeave);
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m_cfg->writeEntry("OnUnencrypted", m_bWarnOnUnencrypted);
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m_cfg->writeEntry("OnMixed", m_bWarnOnMixed);
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m_cfg->setGroup("Validation");
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m_cfg->writeEntry("WarnSelfSigned", m_bWarnSelfSigned);
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m_cfg->writeEntry("WarnExpired", m_bWarnExpired);
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m_cfg->writeEntry("WarnRevoked", m_bWarnRevoked);
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m_cfg->setGroup("EGD");
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m_cfg->writeEntry("UseEGD", d->m_bUseEGD);
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m_cfg->writeEntry("UseEFile", d->m_bUseEFile);
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m_cfg->writePathEntry("EGDPath", d->m_EGDPath);
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m_cfg->sync();
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// FIXME - ciphers
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#if 0
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#ifdef KSSL_HAVE_SSL
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m_cfg->setGroup("SSLv2");
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for (unsigned int i = 0; i < v2ciphers.count(); i++) {
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TQString ciphername;
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ciphername.sprintf("cipher_%s", v2ciphers[i].ascii());
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if (v2selectedciphers.contains(v2ciphers[i])) {
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m_cfg->writeEntry(ciphername, true);
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} else m_cfg->writeEntry(ciphername, false);
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}
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m_cfg->setGroup("SSLv3");
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for (unsigned int i = 0; i < v3ciphers.count(); i++) {
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TQString ciphername;
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ciphername.sprintf("cipher_%s", v3ciphers[i].ascii());
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if (v3selectedciphers.contains(v3ciphers[i])) {
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m_cfg->writeEntry(ciphername, true);
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} else m_cfg->writeEntry(ciphername, false);
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}
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#endif
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m_cfg->sync();
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// insure proper permissions -- contains sensitive data
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TQString cfgName(TDEGlobal::dirs()->findResource("config", "cryptodefaults"));
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if (!cfgName.isEmpty())
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::chmod(TQFile::encodeName(cfgName), 0600);
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#endif
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}
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bool KSSLSettings::warnOnEnter() const { return m_bWarnOnEnter; }
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void KSSLSettings::setWarnOnEnter(bool x) { m_bWarnOnEnter = x; }
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bool KSSLSettings::warnOnUnencrypted() const { return m_bWarnOnUnencrypted; }
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void KSSLSettings::setWarnOnUnencrypted(bool x) { m_bWarnOnUnencrypted = x; }
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bool KSSLSettings::warnOnLeave() const { return m_bWarnOnLeave; }
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void KSSLSettings::setWarnOnLeave(bool x) { m_bWarnOnLeave = x; }
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bool KSSLSettings::warnOnMixed() const { return m_bWarnOnMixed; }
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bool KSSLSettings::warnOnSelfSigned() const { return m_bWarnSelfSigned; }
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bool KSSLSettings::warnOnRevoked() const { return m_bWarnRevoked; }
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bool KSSLSettings::warnOnExpired() const { return m_bWarnExpired; }
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bool KSSLSettings::useEGD() const { return d->m_bUseEGD; }
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bool KSSLSettings::useEFile() const { return d->m_bUseEFile; }
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bool KSSLSettings::autoSendX509() const { return d->m_bSendX509; }
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bool KSSLSettings::promptSendX509() const { return d->m_bPromptX509; }
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void KSSLSettings::setTLSv1(bool enabled) { m_bUseTLSv1 = enabled; }
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void KSSLSettings::setSSLv2(bool enabled) { m_bUseSSLv2 = enabled; }
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void KSSLSettings::setSSLv3(bool enabled) { m_bUseSSLv3 = enabled; }
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TQString& KSSLSettings::getEGDPath() { return d->m_EGDPath; }
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