summaryrefslogtreecommitdiffstats
path: root/kio/kssl/ksslsettings.cc
blob: 5a77b12bf24140a9a908a96d4aedfd729e8dded9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
/* This file is part of the KDE project
 *
 * Copyright (C) 2000 George Staikos <[email protected]>
 *
 * This library 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; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>
 
#include <stdlib.h>
#include <pwd.h>
#include <unistd.h>

#include <tqfile.h>
#include <tqsortedlist.h>

#include "ksslsettings.h"
#include <kglobal.h>
#include <kstandarddirs.h>
#include <kdebug.h>

// this hack provided by Malte Starostik to avoid glibc/openssl bug
// on some systems
#ifdef KSSL_HAVE_SSL
#define crypt _openssl_crypt
#include <openssl/ssl.h>
#undef crypt
#endif
#include <kopenssl.h>

#ifdef KSSL_HAVE_SSL
#define sk_new d->kossl->sk_new
#define sk_push d->kossl->sk_push
#define sk_free d->kossl->sk_free
#define sk_value d->kossl->sk_value
#define sk_num d->kossl->sk_num
#define sk_dup d->kossl->sk_dup
#define sk_pop d->kossl->sk_pop
#endif

      class CipherNode {
      public:
        CipherNode(const char *_name, int _keylen) : 
                      name(_name), keylen(_keylen) {}
        TQString name;
        int keylen;
        inline int operator==(CipherNode &x) 
                     { return ((x.keylen == keylen) && (x.name == name)); }
        inline int operator< (CipherNode &x) { return keylen < x.keylen;  }
        inline int operator<=(CipherNode &x) { return keylen <= x.keylen; }
        inline int operator> (CipherNode &x) { return keylen > x.keylen;  }
        inline int operator>=(CipherNode &x) { return keylen >= x.keylen; }
      };


class KSSLSettingsPrivate {
public:
  KSSLSettingsPrivate() {
    kossl = NULL;   // try to delay this as long as possible
  }
  ~KSSLSettingsPrivate() {

  }

  KOSSL *kossl;
  bool m_bUseEGD;
  bool m_bUseEFile;
  TQString m_EGDPath;
  bool m_bSendX509;
  bool m_bPromptX509;
};

//
// FIXME
// Implementation note: for now, we only read cipher settings from disk,
//                      and do not store them in memory.  This should change.
//

KSSLSettings::KSSLSettings(bool readConfig) {
  d = new KSSLSettingsPrivate;
  m_cfg = new KConfig("cryptodefaults", false, false);

  if (!KGlobal::dirs()->addResourceType("kssl", KStandardDirs::kde_default("data") + "kssl")) {
    //kdDebug(7029) << "Error adding (kssl, share/apps/kssl)" << endl;
  }

  if (readConfig) load();
}


// we don't save settings incase it was a temporary object
KSSLSettings::~KSSLSettings() {
  delete m_cfg;
  delete d;
}
 

bool KSSLSettings::sslv2() const {
  return m_bUseSSLv2;
}


bool KSSLSettings::sslv3() const {
  return m_bUseSSLv3;
}


bool KSSLSettings::tlsv1() const {
  return m_bUseTLSv1;
}

 
// FIXME: we should make a default list available if this fails
//        since OpenSSL seems to just choose any old thing if it's given an
//        empty list.  This behavior is not confirmed though.
TQString KSSLSettings::getCipherList() {
	TQString clist;
#ifdef KSSL_HAVE_SSL
	TQString tcipher;
	bool firstcipher = true;
	SSL_METHOD *meth = 0L;
	TQPtrList<CipherNode> cipherList;

	cipherList.setAutoDelete(true);

	if (!d->kossl)
		d->kossl = KOSSL::self();

	if (m_bUseSSLv3 && m_bUseSSLv2)
		meth = d->kossl->SSLv23_client_method();
	else if(m_bUseSSLv3)
		meth = d->kossl->SSLv3_client_method();
	else if (m_bUseSSLv2)
		meth = d->kossl->SSLv2_client_method();

	SSL_CTX *ctx = d->kossl->SSL_CTX_new(meth);
	SSL* ssl = d->kossl->SSL_new(ctx);
	STACK_OF(SSL_CIPHER)* sk = d->kossl->SSL_get_ciphers(ssl);
	int cnt = sk_SSL_CIPHER_num(sk);
	for (int i=0; i< cnt; i++) {
		SSL_CIPHER *sc = sk_SSL_CIPHER_value(sk,i);
		if (!sc)
			break;

		if(!strcmp("SSLv2", d->kossl->SSL_CIPHER_get_version(sc)))
			m_cfg->setGroup("SSLv2");
		else
			m_cfg->setGroup("SSLv3");

		tcipher.sprintf("cipher_%s", sc->name);
		int bits = d->kossl->SSL_CIPHER_get_bits(sc, NULL);
		if (m_cfg->readBoolEntry(tcipher, bits >= 56)) {
			CipherNode *xx = new CipherNode(sc->name,bits);
			if (!cipherList.contains(xx))
				cipherList.prepend(xx);
			else
				delete xx;
		}
	}
	d->kossl->SSL_free(ssl);
	d->kossl->SSL_CTX_free(ctx);

	// Remove any ADH ciphers as per RFC2246
	// Also remove NULL ciphers and 168bit ciphers
	for (unsigned int i = 0; i < cipherList.count(); i++) {
		CipherNode *j = 0L;
		while ((j = cipherList.at(i)) != 0L) {
			if (j->name.contains("ADH-") || j->name.contains("NULL-") || j->name.contains("DES-CBC3-SHA") || j->name.contains("FZA")) {
				cipherList.remove(j);
			} else {
				break;
			}
		}
	} 

	// now assemble the list  cipher1:cipher2:cipher3:...:ciphern
	while (!cipherList.isEmpty()) {
		if (firstcipher)
			firstcipher = false;
		else clist.append(":");
		clist.append(cipherList.getLast()->name);
		cipherList.removeLast();
	} // while

	kdDebug(7029) << "Cipher list is: " << clist << endl;

#endif
	return clist;
}

// FIXME - sync these up so that we can use them with the control module!!
void KSSLSettings::load() {
  m_cfg->reparseConfiguration();

  m_cfg->setGroup("TLS");
  m_bUseTLSv1 = m_cfg->readBoolEntry("Enabled", true);
 
  m_cfg->setGroup("SSLv2");
  m_bUseSSLv2 = m_cfg->readBoolEntry("Enabled", false);
 
  m_cfg->setGroup("SSLv3");
  m_bUseSSLv3 = m_cfg->readBoolEntry("Enabled", true);
 
  m_cfg->setGroup("Warnings");
  m_bWarnOnEnter = m_cfg->readBoolEntry("OnEnter", false);
  m_bWarnOnLeave = m_cfg->readBoolEntry("OnLeave", true);
  m_bWarnOnUnencrypted = m_cfg->readBoolEntry("OnUnencrypted", true);
  m_bWarnOnMixed = m_cfg->readBoolEntry("OnMixed", true);

  m_cfg->setGroup("Validation");
  m_bWarnSelfSigned = m_cfg->readBoolEntry("WarnSelfSigned", true);
  m_bWarnExpired = m_cfg->readBoolEntry("WarnExpired", true);
  m_bWarnRevoked = m_cfg->readBoolEntry("WarnRevoked", true);

  m_cfg->setGroup("EGD");
  d->m_bUseEGD = m_cfg->readBoolEntry("UseEGD", false);
  d->m_bUseEFile = m_cfg->readBoolEntry("UseEFile", false);
  d->m_EGDPath = m_cfg->readPathEntry("EGDPath");

  m_cfg->setGroup("Auth");
  d->m_bSendX509 = ("send" == m_cfg->readEntry("AuthMethod", ""));
  d->m_bPromptX509 = ("prompt" == m_cfg->readEntry("AuthMethod", ""));

  #ifdef KSSL_HAVE_SSL



  #endif
}


void KSSLSettings::defaults() {
  m_bUseTLSv1 = true;
  m_bUseSSLv2 = false;
  m_bUseSSLv3 = true;
  m_bWarnOnEnter = false;
  m_bWarnOnLeave = true;
  m_bWarnOnUnencrypted = true;
  m_bWarnOnMixed = true;
  m_bWarnSelfSigned = true;
  m_bWarnExpired = true;
  m_bWarnRevoked = true;
  d->m_bUseEGD = false;
  d->m_bUseEFile = false;
  d->m_EGDPath = "";
}


void KSSLSettings::save() {
  m_cfg->setGroup("TLS");
  m_cfg->writeEntry("Enabled", m_bUseTLSv1);
 
  m_cfg->setGroup("SSLv2");
  m_cfg->writeEntry("Enabled", m_bUseSSLv2);
 
  m_cfg->setGroup("SSLv3");
  m_cfg->writeEntry("Enabled", m_bUseSSLv3);
 
  m_cfg->setGroup("Warnings");
  m_cfg->writeEntry("OnEnter", m_bWarnOnEnter);
  m_cfg->writeEntry("OnLeave", m_bWarnOnLeave);
  m_cfg->writeEntry("OnUnencrypted", m_bWarnOnUnencrypted);
  m_cfg->writeEntry("OnMixed", m_bWarnOnMixed);

  m_cfg->setGroup("Validation");
  m_cfg->writeEntry("WarnSelfSigned", m_bWarnSelfSigned);
  m_cfg->writeEntry("WarnExpired", m_bWarnExpired);
  m_cfg->writeEntry("WarnRevoked", m_bWarnRevoked);

  m_cfg->setGroup("EGD");
  m_cfg->writeEntry("UseEGD", d->m_bUseEGD);
  m_cfg->writeEntry("UseEFile", d->m_bUseEFile);
  m_cfg->writePathEntry("EGDPath", d->m_EGDPath);

  m_cfg->sync();
  // FIXME - ciphers
#if 0
#ifdef KSSL_HAVE_SSL
  m_cfg->setGroup("SSLv2");
  for (unsigned int i = 0; i < v2ciphers.count(); i++) {
    TQString ciphername;
    ciphername.sprintf("cipher_%s", v2ciphers[i].ascii());
    if (v2selectedciphers.contains(v2ciphers[i])) {
      m_cfg->writeEntry(ciphername, true);
    } else m_cfg->writeEntry(ciphername, false);
  }
 
  m_cfg->setGroup("SSLv3");
  for (unsigned int i = 0; i < v3ciphers.count(); i++) {
    TQString ciphername;
    ciphername.sprintf("cipher_%s", v3ciphers[i].ascii());
    if (v3selectedciphers.contains(v3ciphers[i])) {
      m_cfg->writeEntry(ciphername, true);
    } else m_cfg->writeEntry(ciphername, false);
  }
#endif 
 
  m_cfg->sync();
 
  // insure proper permissions -- contains sensitive data
  TQString cfgName(KGlobal::dirs()->findResource("config", "cryptodefaults"));
  if (!cfgName.isEmpty())
    ::chmod(TQFile::encodeName(cfgName), 0600);
#endif
}


bool KSSLSettings::warnOnEnter() const       { return m_bWarnOnEnter; }
void KSSLSettings::setWarnOnEnter(bool x)    { m_bWarnOnEnter = x; }
bool KSSLSettings::warnOnUnencrypted() const { return m_bWarnOnUnencrypted; }
void KSSLSettings::setWarnOnUnencrypted(bool x) { m_bWarnOnUnencrypted = x; }
bool KSSLSettings::warnOnLeave() const       { return m_bWarnOnLeave; }
void KSSLSettings::setWarnOnLeave(bool x)    { m_bWarnOnLeave = x; }
bool KSSLSettings::warnOnMixed() const       { return m_bWarnOnMixed; }
bool KSSLSettings::warnOnSelfSigned() const  { return m_bWarnSelfSigned; }
bool KSSLSettings::warnOnRevoked() const     { return m_bWarnRevoked; }
bool KSSLSettings::warnOnExpired() const     { return m_bWarnExpired; }
bool KSSLSettings::useEGD() const            { return d->m_bUseEGD;      }
bool KSSLSettings::useEFile() const          { return d->m_bUseEFile;    }
bool KSSLSettings::autoSendX509() const      { return d->m_bSendX509; }
bool KSSLSettings::promptSendX509() const    { return d->m_bPromptX509; }

void KSSLSettings::setTLSv1(bool enabled) { m_bUseTLSv1 = enabled; }
void KSSLSettings::setSSLv2(bool enabled) { m_bUseSSLv2 = enabled; }
void KSSLSettings::setSSLv3(bool enabled) { m_bUseSSLv3 = enabled; }

TQString& KSSLSettings::getEGDPath()       { return d->m_EGDPath; }

#ifdef KSSL_HAVE_SSL
#undef sk_new
#undef sk_push
#undef sk_free
#undef sk_value
#undef sk_num
#undef sk_pop
#undef sk_dup
#endif