ksslsettings.cc

00001 /* This file is part of the KDE project
00002  *
00003  * Copyright (C) 2000 George Staikos <staikos@kde.org>
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Library General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Library General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Library General Public License
00016  * along with this library; see the file COPYING.LIB.  If not, write to
00017  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018  * Boston, MA 02110-1301, USA.
00019  */
00020 
00021 #ifdef HAVE_CONFIG_H
00022 #include <config.h>
00023 #endif
00024 
00025 #include <sys/types.h>
00026 #include <sys/stat.h>
00027  
00028 #include <stdlib.h>
00029 #include <pwd.h>
00030 #include <unistd.h>
00031 
00032 #include <qfile.h>
00033 #include <qsortedlist.h>
00034 
00035 #include "ksslsettings.h"
00036 #include <kglobal.h>
00037 #include <kstandarddirs.h>
00038 #include <kdebug.h>
00039 
00040 // this hack provided by Malte Starostik to avoid glibc/openssl bug
00041 // on some systems
00042 #ifdef KSSL_HAVE_SSL
00043 #define crypt _openssl_crypt
00044 #include <openssl/ssl.h>
00045 #undef crypt
00046 #endif
00047 
00048 #include <kopenssl.h>
00049 
00050       class CipherNode {
00051       public:
00052         CipherNode(const char *_name, int _keylen) : 
00053                       name(_name), keylen(_keylen) {}
00054         QString name;
00055         int keylen;
00056         inline int operator==(CipherNode &x) 
00057                      { return ((x.keylen == keylen) && (x.name == name)); }
00058         inline int operator< (CipherNode &x) { return keylen < x.keylen;  }
00059         inline int operator<=(CipherNode &x) { return keylen <= x.keylen; }
00060         inline int operator> (CipherNode &x) { return keylen > x.keylen;  }
00061         inline int operator>=(CipherNode &x) { return keylen >= x.keylen; }
00062       };
00063 
00064 
00065 class KSSLSettingsPrivate {
00066 public:
00067   KSSLSettingsPrivate() {
00068     kossl = NULL;   // try to delay this as long as possible
00069   }
00070   ~KSSLSettingsPrivate() {
00071 
00072   }
00073 
00074   KOSSL *kossl;
00075   bool m_bUseEGD;
00076   bool m_bUseEFile;
00077   QString m_EGDPath;
00078   bool m_bSendX509;
00079   bool m_bPromptX509;
00080 };
00081 
00082 //
00083 // FIXME
00084 // Implementation note: for now, we only read cipher settings from disk,
00085 //                      and do not store them in memory.  This should change.
00086 //
00087 
00088 KSSLSettings::KSSLSettings(bool readConfig) {
00089   d = new KSSLSettingsPrivate;
00090   m_cfg = new KConfig("cryptodefaults", false, false);
00091 
00092   if (!KGlobal::dirs()->addResourceType("kssl", KStandardDirs::kde_default("data") + "kssl")) {
00093     //kdDebug(7029) << "Error adding (kssl, share/apps/kssl)" << endl;
00094   }
00095 
00096   if (readConfig) load();
00097 }
00098 
00099 
00100 // we don't save settings incase it was a temporary object
00101 KSSLSettings::~KSSLSettings() {
00102   delete m_cfg;
00103   delete d;
00104 }
00105  
00106 
00107 bool KSSLSettings::sslv2() const {
00108   return m_bUseSSLv2;
00109 }
00110 
00111 
00112 bool KSSLSettings::sslv3() const {
00113   return m_bUseSSLv3;
00114 }
00115 
00116 
00117 bool KSSLSettings::tlsv1() const {
00118   return m_bUseTLSv1;
00119 }
00120 
00121  
00122 // FIXME: we should make a default list available if this fails
00123 //        since OpenSSL seems to just choose any old thing if it's given an
00124 //        empty list.  This behavior is not confirmed though.
00125 QString KSSLSettings::getCipherList() {
00126   QString clist;
00127 #ifdef KSSL_HAVE_SSL
00128   QString tcipher;
00129   bool firstcipher = true;
00130   SSL_METHOD *meth = 0L;
00131   QSortedList<CipherNode> cipherSort;
00132 
00133   cipherSort.setAutoDelete(true);
00134 
00135   if (!d->kossl)
00136     d->kossl = KOSSL::self();
00137 
00138   if (m_bUseSSLv3) {
00139     m_cfg->setGroup("SSLv3");
00140     meth = d->kossl->SSLv3_client_method();
00141     for(int i = 0; ; i++) {
00142       SSL_CIPHER *sc = (meth->get_cipher)(i);
00143       if (!sc)
00144         break;
00145       tcipher.sprintf("cipher_%s", sc->name);
00146       int bits = d->kossl->SSL_CIPHER_get_bits(sc, NULL);
00147 
00148       if (m_cfg->readBoolEntry(tcipher, bits >= 56)) {
00149         CipherNode *xx = new CipherNode(sc->name,bits);
00150         if (!cipherSort.contains(xx)) {
00151           cipherSort.prepend(xx);
00152         } else {
00153           delete xx;
00154         }
00155       }
00156     }
00157   }
00158 
00159   if (m_bUseSSLv2) {
00160     m_cfg->setGroup("SSLv2");
00161     meth = d->kossl->SSLv2_client_method();
00162 
00163     for(int i = 0; meth; i++) {
00164       SSL_CIPHER *sc = (meth->get_cipher)(i);
00165       if (!sc)
00166         break;
00167       tcipher.sprintf("cipher_%s", sc->name);
00168       int bits = d->kossl->SSL_CIPHER_get_bits(sc, NULL);
00169 
00170       if (m_cfg->readBoolEntry(tcipher, bits >= 56)) {
00171         CipherNode *xx = new CipherNode(sc->name,bits);
00172         if (!cipherSort.contains(xx)) {
00173           cipherSort.prepend(xx);
00174         } else {
00175           delete xx;
00176         }
00177       }
00178     }
00179   }
00180 
00181   // Remove any ADH ciphers as per RFC2246
00182   // Also remove NULL ciphers and 168bit ciphers
00183   for (unsigned int i = 0; i < cipherSort.count(); i++) {
00184     CipherNode *j = 0L;
00185     while ((j = cipherSort.at(i)) != 0L) {
00186       if (j->name.contains("ADH-") || j->name.contains("NULL-") || j->name.contains("DES-CBC3-SHA") || j->name.contains("FZA")) {
00187         cipherSort.remove(j);
00188       } else {
00189         break;
00190       }
00191     }
00192   } 
00193 
00194   // now assemble the list  cipher1:cipher2:cipher3:...:ciphern
00195   while (!cipherSort.isEmpty()) {
00196     if (firstcipher)
00197       firstcipher = false;
00198     else clist.append(":");
00199     clist.append(cipherSort.getLast()->name);
00200     cipherSort.removeLast();
00201   } // while
00202 
00203   kdDebug(7029) << "Cipher list is: " << clist << endl;
00204 
00205 #endif
00206   return clist;
00207 }
00208 
00209 // FIXME - sync these up so that we can use them with the control module!!
00210 void KSSLSettings::load() {
00211   m_cfg->reparseConfiguration();
00212 
00213   m_cfg->setGroup("TLS");
00214   m_bUseTLSv1 = m_cfg->readBoolEntry("Enabled", true);
00215  
00216   m_cfg->setGroup("SSLv2");
00217   m_bUseSSLv2 = m_cfg->readBoolEntry("Enabled", false);
00218  
00219   m_cfg->setGroup("SSLv3");
00220   m_bUseSSLv3 = m_cfg->readBoolEntry("Enabled", true);
00221  
00222   m_cfg->setGroup("Warnings");
00223   m_bWarnOnEnter = m_cfg->readBoolEntry("OnEnter", false);
00224   m_bWarnOnLeave = m_cfg->readBoolEntry("OnLeave", true);
00225   m_bWarnOnUnencrypted = m_cfg->readBoolEntry("OnUnencrypted", true);
00226   m_bWarnOnMixed = m_cfg->readBoolEntry("OnMixed", true);
00227 
00228   m_cfg->setGroup("Validation");
00229   m_bWarnSelfSigned = m_cfg->readBoolEntry("WarnSelfSigned", true);
00230   m_bWarnExpired = m_cfg->readBoolEntry("WarnExpired", true);
00231   m_bWarnRevoked = m_cfg->readBoolEntry("WarnRevoked", true);
00232 
00233   m_cfg->setGroup("EGD");
00234   d->m_bUseEGD = m_cfg->readBoolEntry("UseEGD", false);
00235   d->m_bUseEFile = m_cfg->readBoolEntry("UseEFile", false);
00236   d->m_EGDPath = m_cfg->readPathEntry("EGDPath");
00237 
00238   m_cfg->setGroup("Auth");
00239   d->m_bSendX509 = ("send" == m_cfg->readEntry("AuthMethod", ""));
00240   d->m_bPromptX509 = ("prompt" == m_cfg->readEntry("AuthMethod", ""));
00241 
00242   #ifdef KSSL_HAVE_SSL
00243 
00244 
00245 
00246   #endif
00247 }
00248 
00249 
00250 void KSSLSettings::defaults() {
00251   m_bUseTLSv1 = true;
00252   m_bUseSSLv2 = false;
00253   m_bUseSSLv3 = true;
00254   m_bWarnOnEnter = false;
00255   m_bWarnOnLeave = true;
00256   m_bWarnOnUnencrypted = true;
00257   m_bWarnOnMixed = true;
00258   m_bWarnSelfSigned = true;
00259   m_bWarnExpired = true;
00260   m_bWarnRevoked = true;
00261   d->m_bUseEGD = false;
00262   d->m_bUseEFile = false;
00263   d->m_EGDPath = "";
00264 }
00265 
00266 
00267 void KSSLSettings::save() {
00268   m_cfg->setGroup("TLS");
00269   m_cfg->writeEntry("Enabled", m_bUseTLSv1);
00270  
00271   m_cfg->setGroup("SSLv2");
00272   m_cfg->writeEntry("Enabled", m_bUseSSLv2);
00273  
00274   m_cfg->setGroup("SSLv3");
00275   m_cfg->writeEntry("Enabled", m_bUseSSLv3);
00276  
00277   m_cfg->setGroup("Warnings");
00278   m_cfg->writeEntry("OnEnter", m_bWarnOnEnter);
00279   m_cfg->writeEntry("OnLeave", m_bWarnOnLeave);
00280   m_cfg->writeEntry("OnUnencrypted", m_bWarnOnUnencrypted);
00281   m_cfg->writeEntry("OnMixed", m_bWarnOnMixed);
00282 
00283   m_cfg->setGroup("Validation");
00284   m_cfg->writeEntry("WarnSelfSigned", m_bWarnSelfSigned);
00285   m_cfg->writeEntry("WarnExpired", m_bWarnExpired);
00286   m_cfg->writeEntry("WarnRevoked", m_bWarnRevoked);
00287 
00288   m_cfg->setGroup("EGD");
00289   m_cfg->writeEntry("UseEGD", d->m_bUseEGD);
00290   m_cfg->writeEntry("UseEFile", d->m_bUseEFile);
00291   m_cfg->writePathEntry("EGDPath", d->m_EGDPath);
00292 
00293   m_cfg->sync();
00294   // FIXME - ciphers
00295 #if 0
00296 #ifdef KSSL_HAVE_SSL
00297   m_cfg->setGroup("SSLv2");
00298   for (unsigned int i = 0; i < v2ciphers.count(); i++) {
00299     QString ciphername;
00300     ciphername.sprintf("cipher_%s", v2ciphers[i].ascii());
00301     if (v2selectedciphers.contains(v2ciphers[i])) {
00302       m_cfg->writeEntry(ciphername, true);
00303     } else m_cfg->writeEntry(ciphername, false);
00304   }
00305  
00306   m_cfg->setGroup("SSLv3");
00307   for (unsigned int i = 0; i < v3ciphers.count(); i++) {
00308     QString ciphername;
00309     ciphername.sprintf("cipher_%s", v3ciphers[i].ascii());
00310     if (v3selectedciphers.contains(v3ciphers[i])) {
00311       m_cfg->writeEntry(ciphername, true);
00312     } else m_cfg->writeEntry(ciphername, false);
00313   }
00314 #endif 
00315  
00316   m_cfg->sync();
00317  
00318   // insure proper permissions -- contains sensitive data
00319   QString cfgName(KGlobal::dirs()->findResource("config", "cryptodefaults"));
00320   if (!cfgName.isEmpty())
00321     ::chmod(QFile::encodeName(cfgName), 0600);
00322 #endif
00323 }
00324 
00325 
00326 bool KSSLSettings::warnOnEnter() const       { return m_bWarnOnEnter; }
00327 void KSSLSettings::setWarnOnEnter(bool x)    { m_bWarnOnEnter = x; }
00328 bool KSSLSettings::warnOnUnencrypted() const { return m_bWarnOnUnencrypted; }
00329 void KSSLSettings::setWarnOnUnencrypted(bool x) { m_bWarnOnUnencrypted = x; }
00330 bool KSSLSettings::warnOnLeave() const       { return m_bWarnOnLeave; }
00331 void KSSLSettings::setWarnOnLeave(bool x)    { m_bWarnOnLeave = x; }
00332 bool KSSLSettings::warnOnMixed() const       { return m_bWarnOnMixed; }
00333 bool KSSLSettings::warnOnSelfSigned() const  { return m_bWarnSelfSigned; }
00334 bool KSSLSettings::warnOnRevoked() const     { return m_bWarnRevoked; }
00335 bool KSSLSettings::warnOnExpired() const     { return m_bWarnExpired; }
00336 bool KSSLSettings::useEGD() const            { return d->m_bUseEGD;      }
00337 bool KSSLSettings::useEFile() const          { return d->m_bUseEFile;    }
00338 bool KSSLSettings::autoSendX509() const      { return d->m_bSendX509; }
00339 bool KSSLSettings::promptSendX509() const    { return d->m_bPromptX509; }
00340 
00341 void KSSLSettings::setTLSv1(bool enabled) { m_bUseTLSv1 = enabled; }
00342 void KSSLSettings::setSSLv2(bool enabled) { m_bUseSSLv2 = enabled; }
00343 void KSSLSettings::setSSLv3(bool enabled) { m_bUseSSLv3 = enabled; }
00344 
00345 QString& KSSLSettings::getEGDPath()       { return d->m_EGDPath; }
00346 
KDE Home | KDE Accessibility Home | Description of Access Keys