]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* ssl/ssl_ciph.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
675f605d | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
675f605d BM |
60 | * |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
113 | * ECC cipher suite support in OpenSSL originally developed by | |
114 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
115 | */ | |
ddac1974 NL |
116 | /* ==================================================================== |
117 | * Copyright 2005 Nokia. All rights reserved. | |
118 | * | |
119 | * The portions of the attached software ("Contribution") is developed by | |
120 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
121 | * license. | |
122 | * | |
123 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
124 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
125 | * support (see RFC 4279) to OpenSSL. | |
126 | * | |
127 | * No patent licenses or other rights except those expressly stated in | |
128 | * the OpenSSL open source license shall be deemed granted or received | |
129 | * expressly, by implication, estoppel, or otherwise. | |
130 | * | |
131 | * No assurances are provided by Nokia that the Contribution does not | |
132 | * infringe the patent or other intellectual property rights of any third | |
133 | * party or that the license provides you with all the necessary rights | |
134 | * to make use of the Contribution. | |
135 | * | |
136 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
137 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
138 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
139 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
140 | * OTHERWISE. | |
141 | */ | |
142 | ||
d02b48c6 | 143 | #include <stdio.h> |
ec577822 BM |
144 | #include <openssl/objects.h> |
145 | #include <openssl/comp.h> | |
b948e2c5 | 146 | #include <openssl/engine.h> |
d02b48c6 RE |
147 | #include "ssl_locl.h" |
148 | ||
149 | #define SSL_ENC_DES_IDX 0 | |
150 | #define SSL_ENC_3DES_IDX 1 | |
151 | #define SSL_ENC_RC4_IDX 2 | |
152 | #define SSL_ENC_RC2_IDX 3 | |
153 | #define SSL_ENC_IDEA_IDX 4 | |
89bbe14c BM |
154 | #define SSL_ENC_NULL_IDX 5 |
155 | #define SSL_ENC_AES128_IDX 6 | |
156 | #define SSL_ENC_AES256_IDX 7 | |
157 | #define SSL_ENC_CAMELLIA128_IDX 8 | |
158 | #define SSL_ENC_CAMELLIA256_IDX 9 | |
9981a51e | 159 | #define SSL_ENC_GOST89_IDX 10 |
96afc1cf BM |
160 | #define SSL_ENC_SEED_IDX 11 |
161 | #define SSL_ENC_NUM_IDX 12 | |
f3dea9a5 | 162 | |
d02b48c6 | 163 | |
e778802f | 164 | static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ |
9981a51e | 165 | NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, |
d02b48c6 RE |
166 | }; |
167 | ||
7ba666fa RL |
168 | #define SSL_COMP_NULL_IDX 0 |
169 | #define SSL_COMP_ZLIB_IDX 1 | |
170 | #define SSL_COMP_NUM_IDX 2 | |
171 | ||
f73e07cf | 172 | static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; |
413c4f45 | 173 | |
d02b48c6 | 174 | #define SSL_MD_MD5_IDX 0 |
58964a49 | 175 | #define SSL_MD_SHA1_IDX 1 |
b948e2c5 DSH |
176 | #define SSL_MD_GOST94_IDX 2 |
177 | #define SSL_MD_GOST89MAC_IDX 3 | |
81025661 DSH |
178 | /*Constant SSL_MAX_DIGEST equal to size of digests array should be |
179 | * defined in the | |
180 | * ssl_locl.h */ | |
181 | #define SSL_MD_NUM_IDX SSL_MAX_DIGEST | |
e778802f | 182 | static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ |
b948e2c5 DSH |
183 | NULL,NULL,NULL,NULL |
184 | }; | |
185 | /* PKEY_TYPE for GOST89MAC is known in advance, but, because | |
186 | * implementation is engine-provided, we'll fill it only if | |
187 | * corresponding EVP_PKEY_METHOD is found | |
188 | */ | |
189 | static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={ | |
190 | EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef | |
191 | }; | |
192 | ||
193 | static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ | |
194 | 0,0,0,0 | |
d02b48c6 RE |
195 | }; |
196 | ||
81025661 DSH |
197 | static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={ |
198 | SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA, | |
199 | SSL_HANDSHAKE_MAC_GOST94,0 | |
200 | }; | |
201 | ||
d02b48c6 RE |
202 | #define CIPHER_ADD 1 |
203 | #define CIPHER_KILL 2 | |
204 | #define CIPHER_DEL 3 | |
58964a49 | 205 | #define CIPHER_ORD 4 |
018e57c7 | 206 | #define CIPHER_SPECIAL 5 |
d02b48c6 | 207 | |
58964a49 RE |
208 | typedef struct cipher_order_st |
209 | { | |
babb3798 | 210 | const SSL_CIPHER *cipher; |
58964a49 RE |
211 | int active; |
212 | int dead; | |
213 | struct cipher_order_st *next,*prev; | |
214 | } CIPHER_ORDER; | |
215 | ||
018e57c7 | 216 | static const SSL_CIPHER cipher_aliases[]={ |
ed3ecd80 | 217 | /* "ALL" doesn't include eNULL (must be specifically enabled) */ |
52b8dad8 | 218 | {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0}, |
89bbe14c | 219 | /* "COMPLEMENTOFALL" */ |
52b8dad8 | 220 | {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0}, |
89bbe14c BM |
221 | |
222 | /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */ | |
52b8dad8 | 223 | {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0}, |
89bbe14c | 224 | |
52b8dad8 BM |
225 | /* key exchange aliases |
226 | * (some of those using only a single bit here combine | |
227 | * multiple key exchange algs according to the RFCs, | |
89bbe14c | 228 | * e.g. kEDH combines DHE_DSS and DHE_RSA) */ |
52b8dad8 BM |
229 | {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0}, |
230 | ||
231 | {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ | |
232 | {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ | |
233 | {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ | |
234 | {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0}, | |
235 | {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0}, | |
236 | ||
237 | {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0}, | |
238 | ||
239 | {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0}, | |
240 | {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0}, | |
241 | {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0}, | |
242 | {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0}, | |
243 | {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0}, | |
244 | ||
245 | {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0}, | |
0e1dba93 | 246 | {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0}, |
52b8dad8 BM |
247 | |
248 | /* server authentication aliases */ | |
249 | {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0}, | |
250 | {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, | |
251 | {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, | |
252 | {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0}, | |
253 | {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0}, | |
254 | {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ | |
255 | {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0}, | |
256 | {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0}, | |
257 | {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0}, | |
258 | {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0}, | |
0e1dba93 DSH |
259 | {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0}, |
260 | {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0}, | |
261 | {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0}, | |
52b8dad8 BM |
262 | |
263 | /* aliases combining key exchange and server authentication */ | |
264 | {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0}, | |
265 | {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0}, | |
266 | {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, | |
267 | {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0}, | |
268 | {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0}, | |
269 | {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0}, | |
270 | {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0}, | |
271 | {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0}, | |
272 | ||
273 | ||
274 | /* symmetric encryption aliases */ | |
275 | {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0}, | |
276 | {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0}, | |
277 | {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0}, | |
278 | {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0}, | |
279 | {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0}, | |
96afc1cf | 280 | {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0}, |
52b8dad8 BM |
281 | {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, |
282 | {0,SSL_TXT_AES128,0, 0,0,SSL_AES128,0,0,0,0,0,0}, | |
283 | {0,SSL_TXT_AES256,0, 0,0,SSL_AES256,0,0,0,0,0,0}, | |
284 | {0,SSL_TXT_AES,0, 0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0}, | |
285 | {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0}, | |
286 | {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0}, | |
287 | {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0}, | |
288 | ||
289 | /* MAC aliases */ | |
290 | {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0}, | |
291 | {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, | |
292 | {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, | |
b948e2c5 DSH |
293 | {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0}, |
294 | {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0}, | |
52b8dad8 BM |
295 | |
296 | /* protocol version aliases */ | |
297 | {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0}, | |
298 | {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0}, | |
299 | {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0}, | |
300 | ||
301 | /* export flag */ | |
302 | {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, | |
303 | {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, | |
304 | ||
305 | /* strength classes */ | |
306 | {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, | |
307 | {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, | |
308 | {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, | |
309 | {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, | |
310 | {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, | |
3ad74edc DSH |
311 | /* FIPS 140-2 approved ciphersuite */ |
312 | {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, | |
d02b48c6 | 313 | }; |
81025661 DSH |
314 | /* Search for public key algorithm with given name and |
315 | * return its pkey_id if it is available. Otherwise return 0 | |
316 | */ | |
317 | static int get_optional_pkey_id(const char *pkey_name) | |
318 | { | |
319 | const EVP_PKEY_ASN1_METHOD *ameth; | |
320 | ENGINE *tmpeng = NULL; | |
321 | int pkey_id=0; | |
322 | ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); | |
323 | if (ameth) | |
324 | { | |
325 | EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); | |
326 | } | |
327 | if (tmpeng) ENGINE_finish(tmpeng); | |
328 | return pkey_id; | |
329 | } | |
d02b48c6 | 330 | |
7f3c9036 | 331 | void ssl_load_ciphers(void) |
d02b48c6 | 332 | { |
d02b48c6 RE |
333 | ssl_cipher_methods[SSL_ENC_DES_IDX]= |
334 | EVP_get_cipherbyname(SN_des_cbc); | |
335 | ssl_cipher_methods[SSL_ENC_3DES_IDX]= | |
336 | EVP_get_cipherbyname(SN_des_ede3_cbc); | |
337 | ssl_cipher_methods[SSL_ENC_RC4_IDX]= | |
338 | EVP_get_cipherbyname(SN_rc4); | |
339 | ssl_cipher_methods[SSL_ENC_RC2_IDX]= | |
340 | EVP_get_cipherbyname(SN_rc2_cbc); | |
5fdf0666 | 341 | #ifndef OPENSSL_NO_IDEA |
d02b48c6 RE |
342 | ssl_cipher_methods[SSL_ENC_IDEA_IDX]= |
343 | EVP_get_cipherbyname(SN_idea_cbc); | |
5fdf0666 RL |
344 | #else |
345 | ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; | |
346 | #endif | |
deb2c1a1 DSH |
347 | ssl_cipher_methods[SSL_ENC_AES128_IDX]= |
348 | EVP_get_cipherbyname(SN_aes_128_cbc); | |
349 | ssl_cipher_methods[SSL_ENC_AES256_IDX]= | |
350 | EVP_get_cipherbyname(SN_aes_256_cbc); | |
f3dea9a5 BM |
351 | ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= |
352 | EVP_get_cipherbyname(SN_camellia_128_cbc); | |
353 | ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= | |
354 | EVP_get_cipherbyname(SN_camellia_256_cbc); | |
9981a51e | 355 | ssl_cipher_methods[SSL_ENC_GOST89_IDX]= |
96afc1cf BM |
356 | EVP_get_cipherbyname(SN_gost89_cnt); |
357 | ssl_cipher_methods[SSL_ENC_SEED_IDX]= | |
358 | EVP_get_cipherbyname(SN_seed_cbc); | |
d02b48c6 RE |
359 | |
360 | ssl_digest_methods[SSL_MD_MD5_IDX]= | |
361 | EVP_get_digestbyname(SN_md5); | |
b948e2c5 DSH |
362 | ssl_mac_secret_size[SSL_MD_MD5_IDX]= |
363 | EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); | |
d02b48c6 RE |
364 | ssl_digest_methods[SSL_MD_SHA1_IDX]= |
365 | EVP_get_digestbyname(SN_sha1); | |
b948e2c5 DSH |
366 | ssl_mac_secret_size[SSL_MD_SHA1_IDX]= |
367 | EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); | |
368 | ssl_digest_methods[SSL_MD_GOST94_IDX]= | |
369 | EVP_get_digestbyname(SN_id_GostR3411_94); | |
370 | if (ssl_digest_methods[SSL_MD_GOST94_IDX]) | |
371 | { | |
372 | ssl_mac_secret_size[SSL_MD_GOST94_IDX]= | |
373 | EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); | |
374 | } | |
375 | ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= | |
376 | EVP_get_digestbyname(SN_id_Gost28147_89_MAC); | |
81025661 DSH |
377 | ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); |
378 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { | |
b948e2c5 | 379 | ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; |
81025661 | 380 | } |
09b6c2ef | 381 | |
b948e2c5 | 382 | } |
09b6c2ef DSH |
383 | #ifndef OPENSSL_NO_COMP |
384 | ||
7ba666fa RL |
385 | static int sk_comp_cmp(const SSL_COMP * const *a, |
386 | const SSL_COMP * const *b) | |
387 | { | |
388 | return((*a)->id-(*b)->id); | |
389 | } | |
390 | ||
391 | static void load_builtin_compressions(void) | |
392 | { | |
675f605d | 393 | int got_write_lock = 0; |
f70ddce7 | 394 | |
675f605d | 395 | CRYPTO_r_lock(CRYPTO_LOCK_SSL); |
7ba666fa RL |
396 | if (ssl_comp_methods == NULL) |
397 | { | |
675f605d BM |
398 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); |
399 | CRYPTO_w_lock(CRYPTO_LOCK_SSL); | |
400 | got_write_lock = 1; | |
401 | ||
402 | if (ssl_comp_methods == NULL) | |
7ba666fa | 403 | { |
675f605d BM |
404 | SSL_COMP *comp = NULL; |
405 | ||
406 | MemCheck_off(); | |
407 | ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); | |
408 | if (ssl_comp_methods != NULL) | |
7ba666fa | 409 | { |
675f605d BM |
410 | comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); |
411 | if (comp != NULL) | |
7ba666fa | 412 | { |
675f605d BM |
413 | comp->method=COMP_zlib(); |
414 | if (comp->method | |
415 | && comp->method->type == NID_undef) | |
416 | OPENSSL_free(comp); | |
417 | else | |
418 | { | |
419 | comp->id=SSL_COMP_ZLIB_IDX; | |
420 | comp->name=comp->method->name; | |
421 | sk_SSL_COMP_push(ssl_comp_methods,comp); | |
422 | } | |
7ba666fa RL |
423 | } |
424 | } | |
675f605d | 425 | MemCheck_on(); |
7ba666fa | 426 | } |
7ba666fa | 427 | } |
675f605d BM |
428 | |
429 | if (got_write_lock) | |
430 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL); | |
431 | else | |
432 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); | |
7ba666fa | 433 | } |
09b6c2ef | 434 | #endif |
7ba666fa | 435 | |
0821bcd4 | 436 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
b948e2c5 | 437 | const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) |
d02b48c6 RE |
438 | { |
439 | int i; | |
babb3798 | 440 | const SSL_CIPHER *c; |
d02b48c6 | 441 | |
413c4f45 | 442 | c=s->cipher; |
d02b48c6 | 443 | if (c == NULL) return(0); |
413c4f45 MC |
444 | if (comp != NULL) |
445 | { | |
446 | SSL_COMP ctmp; | |
09b6c2ef | 447 | #ifndef OPENSSL_NO_COMP |
7ba666fa | 448 | load_builtin_compressions(); |
09b6c2ef | 449 | #endif |
413c4f45 | 450 | |
7ba666fa RL |
451 | *comp=NULL; |
452 | ctmp.id=s->compress_meth; | |
453 | if (ssl_comp_methods != NULL) | |
454 | { | |
f73e07cf | 455 | i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); |
413c4f45 | 456 | if (i >= 0) |
f73e07cf | 457 | *comp=sk_SSL_COMP_value(ssl_comp_methods,i); |
413c4f45 MC |
458 | else |
459 | *comp=NULL; | |
460 | } | |
461 | } | |
462 | ||
463 | if ((enc == NULL) || (md == NULL)) return(0); | |
d02b48c6 | 464 | |
52b8dad8 | 465 | switch (c->algorithm_enc) |
d02b48c6 RE |
466 | { |
467 | case SSL_DES: | |
468 | i=SSL_ENC_DES_IDX; | |
469 | break; | |
470 | case SSL_3DES: | |
471 | i=SSL_ENC_3DES_IDX; | |
472 | break; | |
473 | case SSL_RC4: | |
474 | i=SSL_ENC_RC4_IDX; | |
475 | break; | |
476 | case SSL_RC2: | |
477 | i=SSL_ENC_RC2_IDX; | |
478 | break; | |
479 | case SSL_IDEA: | |
480 | i=SSL_ENC_IDEA_IDX; | |
481 | break; | |
482 | case SSL_eNULL: | |
483 | i=SSL_ENC_NULL_IDX; | |
484 | break; | |
52b8dad8 BM |
485 | case SSL_AES128: |
486 | i=SSL_ENC_AES128_IDX; | |
259810e0 | 487 | break; |
52b8dad8 BM |
488 | case SSL_AES256: |
489 | i=SSL_ENC_AES256_IDX; | |
490 | break; | |
491 | case SSL_CAMELLIA128: | |
492 | i=SSL_ENC_CAMELLIA128_IDX; | |
493 | break; | |
494 | case SSL_CAMELLIA256: | |
495 | i=SSL_ENC_CAMELLIA256_IDX; | |
f3dea9a5 | 496 | break; |
9981a51e DSH |
497 | case SSL_eGOST2814789CNT: |
498 | i=SSL_ENC_GOST89_IDX; | |
499 | break; | |
96afc1cf BM |
500 | case SSL_SEED: |
501 | i=SSL_ENC_SEED_IDX; | |
502 | break; | |
d02b48c6 RE |
503 | default: |
504 | i= -1; | |
505 | break; | |
506 | } | |
507 | ||
508 | if ((i < 0) || (i > SSL_ENC_NUM_IDX)) | |
509 | *enc=NULL; | |
510 | else | |
511 | { | |
512 | if (i == SSL_ENC_NULL_IDX) | |
513 | *enc=EVP_enc_null(); | |
514 | else | |
515 | *enc=ssl_cipher_methods[i]; | |
516 | } | |
517 | ||
52b8dad8 | 518 | switch (c->algorithm_mac) |
d02b48c6 RE |
519 | { |
520 | case SSL_MD5: | |
521 | i=SSL_MD_MD5_IDX; | |
522 | break; | |
d02b48c6 RE |
523 | case SSL_SHA1: |
524 | i=SSL_MD_SHA1_IDX; | |
525 | break; | |
b948e2c5 DSH |
526 | case SSL_GOST94: |
527 | i = SSL_MD_GOST94_IDX; | |
528 | break; | |
529 | case SSL_GOST89MAC: | |
530 | i = SSL_MD_GOST89MAC_IDX; | |
531 | break; | |
d02b48c6 RE |
532 | default: |
533 | i= -1; | |
534 | break; | |
535 | } | |
536 | if ((i < 0) || (i > SSL_MD_NUM_IDX)) | |
b948e2c5 DSH |
537 | { |
538 | *md=NULL; | |
539 | if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; | |
540 | if (mac_secret_size!=NULL) *mac_secret_size = 0; | |
541 | ||
542 | } | |
d02b48c6 | 543 | else |
b948e2c5 | 544 | { |
d02b48c6 | 545 | *md=ssl_digest_methods[i]; |
b948e2c5 DSH |
546 | if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; |
547 | if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; | |
548 | } | |
d02b48c6 | 549 | |
b948e2c5 | 550 | if ((*enc != NULL) && (*md != NULL) && (!mac_pkey_type||*mac_pkey_type != NID_undef)) |
d02b48c6 RE |
551 | return(1); |
552 | else | |
553 | return(0); | |
554 | } | |
555 | ||
81025661 DSH |
556 | int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) |
557 | { | |
558 | if (idx <0||idx>=SSL_MD_NUM_IDX) | |
559 | { | |
560 | return 0; | |
561 | } | |
562 | if (ssl_handshake_digest_flag[idx]==0) return 0; | |
563 | *mask = ssl_handshake_digest_flag[idx]; | |
564 | *md = ssl_digest_methods[idx]; | |
565 | return 1; | |
566 | } | |
567 | ||
58964a49 RE |
568 | #define ITEM_SEP(a) \ |
569 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) | |
570 | ||
6b691a5c UM |
571 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
572 | CIPHER_ORDER **tail) | |
58964a49 RE |
573 | { |
574 | if (curr == *tail) return; | |
575 | if (curr == *head) | |
576 | *head=curr->next; | |
577 | if (curr->prev != NULL) | |
578 | curr->prev->next=curr->next; | |
fd5bc65c | 579 | if (curr->next != NULL) |
58964a49 RE |
580 | curr->next->prev=curr->prev; |
581 | (*tail)->next=curr; | |
582 | curr->prev= *tail; | |
583 | curr->next=NULL; | |
584 | *tail=curr; | |
585 | } | |
586 | ||
fd5bc65c BM |
587 | static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
588 | CIPHER_ORDER **tail) | |
589 | { | |
590 | if (curr == *head) return; | |
591 | if (curr == *tail) | |
592 | *tail=curr->prev; | |
593 | if (curr->next != NULL) | |
594 | curr->next->prev=curr->prev; | |
595 | if (curr->prev != NULL) | |
596 | curr->prev->next=curr->next; | |
597 | (*head)->prev=curr; | |
598 | curr->next= *head; | |
599 | curr->prev=NULL; | |
600 | *head=curr; | |
601 | } | |
602 | ||
52b8dad8 | 603 | static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) |
d02b48c6 | 604 | { |
52b8dad8 BM |
605 | *mkey = 0; |
606 | *auth = 0; | |
607 | *enc = 0; | |
608 | *mac = 0; | |
609 | *ssl = 0; | |
d02b48c6 | 610 | |
bc36ee62 | 611 | #ifdef OPENSSL_NO_RSA |
52b8dad8 BM |
612 | *mkey |= SSL_kRSA; |
613 | *auth |= SSL_aRSA; | |
d02b48c6 | 614 | #endif |
bc36ee62 | 615 | #ifdef OPENSSL_NO_DSA |
52b8dad8 | 616 | *auth |= SSL_aDSS; |
d02b48c6 | 617 | #endif |
52b8dad8 BM |
618 | *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ |
619 | *auth |= SSL_aDH; | |
bc36ee62 | 620 | #ifdef OPENSSL_NO_DH |
52b8dad8 BM |
621 | *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; |
622 | *auth |= SSL_aDH; | |
d02b48c6 | 623 | #endif |
bc36ee62 | 624 | #ifdef OPENSSL_NO_KRB5 |
52b8dad8 BM |
625 | *mkey |= SSL_kKRB5; |
626 | *auth |= SSL_aKRB5; | |
f9b3bff6 | 627 | #endif |
89bbe14c | 628 | #ifdef OPENSSL_NO_ECDSA |
52b8dad8 | 629 | *auth |= SSL_aECDSA; |
89bbe14c | 630 | #endif |
ea262260 | 631 | #ifdef OPENSSL_NO_ECDH |
52b8dad8 BM |
632 | *mkey |= SSL_kECDHe|SSL_kECDHr; |
633 | *auth |= SSL_aECDH; | |
ea262260 | 634 | #endif |
ddac1974 | 635 | #ifdef OPENSSL_NO_PSK |
52b8dad8 BM |
636 | *mkey |= SSL_kPSK; |
637 | *auth |= SSL_aPSK; | |
ddac1974 | 638 | #endif |
81025661 DSH |
639 | /* Check for presence of GOST 34.10 algorithms, and if they |
640 | * do not present, disable appropriate auth and key exchange */ | |
641 | if (!get_optional_pkey_id("gost94")) { | |
642 | *auth |= SSL_aGOST94; | |
643 | } | |
644 | if (!get_optional_pkey_id("gost2001")) { | |
645 | *auth |= SSL_aGOST01; | |
646 | } | |
647 | /* Disable GOST key exchange if no GOST signature algs are available * */ | |
648 | if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { | |
649 | *mkey |= SSL_kGOST; | |
650 | } | |
988788f6 | 651 | #ifdef SSL_FORBID_ENULL |
52b8dad8 | 652 | *enc |= SSL_eNULL; |
d02b48c6 | 653 | #endif |
81025661 DSH |
654 | |
655 | ||
d02b48c6 | 656 | |
52b8dad8 BM |
657 | *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; |
658 | *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; | |
659 | *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; | |
660 | *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; | |
661 | *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; | |
662 | *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; | |
663 | *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; | |
664 | *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; | |
665 | *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; | |
9981a51e | 666 | *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; |
96afc1cf | 667 | *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; |
52b8dad8 BM |
668 | |
669 | *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; | |
670 | *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; | |
b948e2c5 DSH |
671 | *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; |
672 | *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; | |
673 | ||
018e57c7 DSH |
674 | } |
675 | ||
676 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, | |
52b8dad8 BM |
677 | int num_of_ciphers, |
678 | unsigned long disabled_mkey, unsigned long disabled_auth, | |
679 | unsigned long disabled_enc, unsigned long disabled_mac, | |
680 | unsigned long disabled_ssl, | |
681 | CIPHER_ORDER *co_list, | |
682 | CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) | |
018e57c7 | 683 | { |
3822740c | 684 | int i, co_list_num; |
babb3798 | 685 | const SSL_CIPHER *c; |
018e57c7 DSH |
686 | |
687 | /* | |
688 | * We have num_of_ciphers descriptions compiled in, depending on the | |
689 | * method selected (SSLv2 and/or SSLv3, TLSv1 etc). | |
690 | * These will later be sorted in a linked list with at most num | |
691 | * entries. | |
692 | */ | |
58964a49 | 693 | |
d02b48c6 | 694 | /* Get the initial list of ciphers */ |
3822740c | 695 | co_list_num = 0; /* actual count of ciphers */ |
018e57c7 | 696 | for (i = 0; i < num_of_ciphers; i++) |
d02b48c6 | 697 | { |
018e57c7 | 698 | c = ssl_method->get_cipher(i); |
d02b48c6 | 699 | /* drop those that use any of that is not available */ |
52b8dad8 BM |
700 | if ((c != NULL) && c->valid && |
701 | !(c->algorithm_mkey & disabled_mkey) && | |
702 | !(c->algorithm_auth & disabled_auth) && | |
703 | !(c->algorithm_enc & disabled_enc) && | |
704 | !(c->algorithm_mac & disabled_mac) && | |
705 | !(c->algorithm_ssl & disabled_ssl)) | |
d02b48c6 | 706 | { |
3822740c RL |
707 | co_list[co_list_num].cipher = c; |
708 | co_list[co_list_num].next = NULL; | |
709 | co_list[co_list_num].prev = NULL; | |
710 | co_list[co_list_num].active = 0; | |
711 | co_list_num++; | |
f9b3bff6 | 712 | #ifdef KSSL_DEBUG |
52b8dad8 | 713 | printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); |
f9b3bff6 | 714 | #endif /* KSSL_DEBUG */ |
018e57c7 | 715 | /* |
d02b48c6 | 716 | if (!sk_push(ca_list,(char *)c)) goto err; |
018e57c7 | 717 | */ |
d02b48c6 RE |
718 | } |
719 | } | |
018e57c7 DSH |
720 | |
721 | /* | |
722 | * Prepare linked list from list entries | |
723 | */ | |
3822740c | 724 | if (co_list_num > 0) |
58964a49 | 725 | { |
fd5bc65c BM |
726 | co_list[0].prev = NULL; |
727 | ||
728 | if (co_list_num > 1) | |
729 | { | |
730 | co_list[0].next = &co_list[1]; | |
731 | ||
732 | for (i = 1; i < co_list_num - 1; i++) | |
733 | { | |
734 | co_list[i].prev = &co_list[i - 1]; | |
735 | co_list[i].next = &co_list[i + 1]; | |
736 | } | |
737 | ||
738 | co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; | |
739 | } | |
740 | ||
741 | co_list[co_list_num - 1].next = NULL; | |
742 | ||
743 | *head_p = &co_list[0]; | |
744 | *tail_p = &co_list[co_list_num - 1]; | |
58964a49 | 745 | } |
018e57c7 | 746 | } |
d02b48c6 | 747 | |
babb3798 | 748 | static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
52b8dad8 BM |
749 | int num_of_group_aliases, |
750 | unsigned long disabled_mkey, unsigned long disabled_auth, | |
751 | unsigned long disabled_enc, unsigned long disabled_mac, | |
752 | unsigned long disabled_ssl, | |
018e57c7 DSH |
753 | CIPHER_ORDER *head) |
754 | { | |
755 | CIPHER_ORDER *ciph_curr; | |
babb3798 | 756 | const SSL_CIPHER **ca_curr; |
018e57c7 | 757 | int i; |
52b8dad8 BM |
758 | unsigned long mask_mkey = ~disabled_mkey; |
759 | unsigned long mask_auth = ~disabled_auth; | |
760 | unsigned long mask_enc = ~disabled_enc; | |
761 | unsigned long mask_mac = ~disabled_mac; | |
762 | unsigned long mask_ssl = ~disabled_ssl; | |
d02b48c6 | 763 | |
018e57c7 DSH |
764 | /* |
765 | * First, add the real ciphers as already collected | |
766 | */ | |
767 | ciph_curr = head; | |
768 | ca_curr = ca_list; | |
769 | while (ciph_curr != NULL) | |
d02b48c6 | 770 | { |
018e57c7 DSH |
771 | *ca_curr = ciph_curr->cipher; |
772 | ca_curr++; | |
773 | ciph_curr = ciph_curr->next; | |
d02b48c6 RE |
774 | } |
775 | ||
018e57c7 DSH |
776 | /* |
777 | * Now we add the available ones from the cipher_aliases[] table. | |
09e20e0b BM |
778 | * They represent either one or more algorithms, some of which |
779 | * in any affected category must be supported (set in enabled_mask), | |
89bbe14c | 780 | * or represent a cipher strength value (will be added in any case because algorithms=0). |
018e57c7 DSH |
781 | */ |
782 | for (i = 0; i < num_of_group_aliases; i++) | |
783 | { | |
52b8dad8 BM |
784 | unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; |
785 | unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; | |
786 | unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; | |
787 | unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; | |
788 | unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; | |
789 | ||
790 | if (algorithm_mkey) | |
791 | if ((algorithm_mkey & mask_mkey) == 0) | |
792 | continue; | |
793 | ||
794 | if (algorithm_auth) | |
795 | if ((algorithm_auth & mask_auth) == 0) | |
09e20e0b | 796 | continue; |
09e20e0b | 797 | |
52b8dad8 BM |
798 | if (algorithm_enc) |
799 | if ((algorithm_enc & mask_enc) == 0) | |
09e20e0b | 800 | continue; |
09e20e0b | 801 | |
52b8dad8 BM |
802 | if (algorithm_mac) |
803 | if ((algorithm_mac & mask_mac) == 0) | |
09e20e0b | 804 | continue; |
09e20e0b | 805 | |
52b8dad8 BM |
806 | if (algorithm_ssl) |
807 | if ((algorithm_ssl & mask_ssl) == 0) | |
09e20e0b | 808 | continue; |
09e20e0b BM |
809 | |
810 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); | |
811 | ca_curr++; | |
018e57c7 | 812 | } |
d02b48c6 | 813 | |
018e57c7 DSH |
814 | *ca_curr = NULL; /* end of list */ |
815 | } | |
d02b48c6 | 816 | |
52b8dad8 BM |
817 | static void ssl_cipher_apply_rule(unsigned long cipher_id, |
818 | unsigned long alg_mkey, unsigned long alg_auth, | |
819 | unsigned long alg_enc, unsigned long alg_mac, | |
820 | unsigned long alg_ssl, | |
821 | unsigned long algo_strength, | |
a717831d | 822 | int rule, int strength_bits, |
018e57c7 DSH |
823 | CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) |
824 | { | |
fd5bc65c | 825 | CIPHER_ORDER *head, *tail, *curr, *curr2, *last; |
babb3798 | 826 | const SSL_CIPHER *cp; |
fd5bc65c | 827 | int reverse = 0; |
018e57c7 DSH |
828 | |
829 | #ifdef CIPHER_DEBUG | |
52b8dad8 BM |
830 | printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", |
831 | rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); | |
018e57c7 | 832 | #endif |
d02b48c6 | 833 | |
fd5bc65c BM |
834 | if (rule == CIPHER_DEL) |
835 | reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ | |
836 | ||
837 | head = *head_p; | |
838 | tail = *tail_p; | |
839 | ||
840 | if (reverse) | |
841 | { | |
842 | curr = tail; | |
843 | last = head; | |
844 | } | |
845 | else | |
846 | { | |
847 | curr = head; | |
848 | last = tail; | |
849 | } | |
850 | ||
851 | curr2 = curr; | |
d02b48c6 RE |
852 | for (;;) |
853 | { | |
fd5bc65c | 854 | if ((curr == NULL) || (curr == last)) break; |
018e57c7 | 855 | curr = curr2; |
fd5bc65c | 856 | curr2 = reverse ? curr->prev : curr->next; |
018e57c7 DSH |
857 | |
858 | cp = curr->cipher; | |
859 | ||
52b8dad8 BM |
860 | /* |
861 | * Selection criteria is either the value of strength_bits | |
862 | * or the algorithms used. | |
863 | */ | |
864 | if (strength_bits >= 0) | |
ba1ba5f0 | 865 | { |
52b8dad8 | 866 | if (strength_bits != cp->strength_bits) |
ba1ba5f0 DSH |
867 | continue; |
868 | } | |
52b8dad8 | 869 | else |
018e57c7 | 870 | { |
018e57c7 | 871 | #ifdef CIPHER_DEBUG |
52b8dad8 | 872 | printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength); |
018e57c7 | 873 | #endif |
52b8dad8 BM |
874 | |
875 | if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) | |
876 | continue; | |
877 | if (alg_auth && !(alg_auth & cp->algorithm_auth)) | |
878 | continue; | |
879 | if (alg_enc && !(alg_enc & cp->algorithm_enc)) | |
880 | continue; | |
881 | if (alg_mac && !(alg_mac & cp->algorithm_mac)) | |
882 | continue; | |
883 | if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) | |
884 | continue; | |
885 | if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) | |
886 | continue; | |
887 | if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) | |
888 | continue; | |
018e57c7 | 889 | } |
018e57c7 DSH |
890 | |
891 | #ifdef CIPHER_DEBUG | |
892 | printf("Action = %d\n", rule); | |
893 | #endif | |
894 | ||
895 | /* add the cipher if it has not been added yet. */ | |
896 | if (rule == CIPHER_ADD) | |
897 | { | |
fd5bc65c | 898 | /* reverse == 0 */ |
018e57c7 DSH |
899 | if (!curr->active) |
900 | { | |
901 | ll_append_tail(&head, curr, &tail); | |
902 | curr->active = 1; | |
903 | } | |
904 | } | |
905 | /* Move the added cipher to this location */ | |
906 | else if (rule == CIPHER_ORD) | |
907 | { | |
fd5bc65c | 908 | /* reverse == 0 */ |
018e57c7 DSH |
909 | if (curr->active) |
910 | { | |
911 | ll_append_tail(&head, curr, &tail); | |
912 | } | |
913 | } | |
914 | else if (rule == CIPHER_DEL) | |
fd5bc65c BM |
915 | { |
916 | /* reverse == 1 */ | |
917 | if (curr->active) | |
918 | { | |
919 | /* most recently deleted ciphersuites get best positions | |
920 | * for any future CIPHER_ADD (note that the CIPHER_DEL loop | |
921 | * works in reverse to maintain the order) */ | |
922 | ll_append_head(&head, curr, &tail); | |
923 | curr->active = 0; | |
924 | } | |
925 | } | |
018e57c7 DSH |
926 | else if (rule == CIPHER_KILL) |
927 | { | |
fd5bc65c | 928 | /* reverse == 0 */ |
018e57c7 DSH |
929 | if (head == curr) |
930 | head = curr->next; | |
931 | else | |
932 | curr->prev->next = curr->next; | |
933 | if (tail == curr) | |
934 | tail = curr->prev; | |
935 | curr->active = 0; | |
936 | if (curr->next != NULL) | |
937 | curr->next->prev = curr->prev; | |
938 | if (curr->prev != NULL) | |
939 | curr->prev->next = curr->next; | |
940 | curr->next = NULL; | |
941 | curr->prev = NULL; | |
942 | } | |
943 | } | |
944 | ||
945 | *head_p = head; | |
946 | *tail_p = tail; | |
947 | } | |
948 | ||
a717831d | 949 | static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
3822740c | 950 | CIPHER_ORDER **tail_p) |
018e57c7 DSH |
951 | { |
952 | int max_strength_bits, i, *number_uses; | |
953 | CIPHER_ORDER *curr; | |
954 | ||
955 | /* | |
956 | * This routine sorts the ciphers with descending strength. The sorting | |
957 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
958 | * routine as '+' movement to the end of the list. | |
959 | */ | |
960 | max_strength_bits = 0; | |
961 | curr = *head_p; | |
962 | while (curr != NULL) | |
963 | { | |
964 | if (curr->active && | |
965 | (curr->cipher->strength_bits > max_strength_bits)) | |
966 | max_strength_bits = curr->cipher->strength_bits; | |
967 | curr = curr->next; | |
968 | } | |
969 | ||
26a3a48d | 970 | number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); |
018e57c7 | 971 | if (!number_uses) |
52b8dad8 | 972 | { |
018e57c7 DSH |
973 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); |
974 | return(0); | |
52b8dad8 | 975 | } |
018e57c7 DSH |
976 | memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); |
977 | ||
978 | /* | |
979 | * Now find the strength_bits values actually used | |
980 | */ | |
981 | curr = *head_p; | |
982 | while (curr != NULL) | |
983 | { | |
984 | if (curr->active) | |
985 | number_uses[curr->cipher->strength_bits]++; | |
986 | curr = curr->next; | |
987 | } | |
018e57c7 DSH |
988 | /* |
989 | * Go through the list of used strength_bits values in descending | |
64287002 | 990 | * order. |
018e57c7 | 991 | */ |
018e57c7 | 992 | for (i = max_strength_bits; i >= 0; i--) |
018e57c7 | 993 | if (number_uses[i] > 0) |
52b8dad8 | 994 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); |
018e57c7 | 995 | |
26a3a48d | 996 | OPENSSL_free(number_uses); |
018e57c7 DSH |
997 | return(1); |
998 | } | |
999 | ||
1000 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
a717831d | 1001 | CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, |
babb3798 | 1002 | const SSL_CIPHER **ca_list) |
018e57c7 | 1003 | { |
52b8dad8 | 1004 | unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; |
018e57c7 DSH |
1005 | const char *l, *start, *buf; |
1006 | int j, multi, found, rule, retval, ok, buflen; | |
52b8dad8 | 1007 | unsigned long cipher_id = 0; |
018e57c7 | 1008 | char ch; |
58964a49 | 1009 | |
018e57c7 DSH |
1010 | retval = 1; |
1011 | l = rule_str; | |
1012 | for (;;) | |
1013 | { | |
1014 | ch = *l; | |
58964a49 | 1015 | |
018e57c7 DSH |
1016 | if (ch == '\0') |
1017 | break; /* done */ | |
d02b48c6 | 1018 | if (ch == '-') |
018e57c7 | 1019 | { rule = CIPHER_DEL; l++; } |
d02b48c6 | 1020 | else if (ch == '+') |
018e57c7 | 1021 | { rule = CIPHER_ORD; l++; } |
d02b48c6 | 1022 | else if (ch == '!') |
018e57c7 DSH |
1023 | { rule = CIPHER_KILL; l++; } |
1024 | else if (ch == '@') | |
1025 | { rule = CIPHER_SPECIAL; l++; } | |
1026 | else | |
1027 | { rule = CIPHER_ADD; } | |
d02b48c6 | 1028 | |
58964a49 | 1029 | if (ITEM_SEP(ch)) |
d02b48c6 RE |
1030 | { |
1031 | l++; | |
1032 | continue; | |
1033 | } | |
018e57c7 | 1034 | |
52b8dad8 BM |
1035 | alg_mkey = 0; |
1036 | alg_auth = 0; | |
1037 | alg_enc = 0; | |
1038 | alg_mac = 0; | |
1039 | alg_ssl = 0; | |
1040 | algo_strength = 0; | |
d02b48c6 RE |
1041 | |
1042 | start=l; | |
1043 | for (;;) | |
1044 | { | |
018e57c7 DSH |
1045 | ch = *l; |
1046 | buf = l; | |
1047 | buflen = 0; | |
ca570cfd | 1048 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
1049 | while ( ((ch >= 'A') && (ch <= 'Z')) || |
1050 | ((ch >= '0') && (ch <= '9')) || | |
1051 | ((ch >= 'a') && (ch <= 'z')) || | |
1052 | (ch == '-')) | |
ca570cfd UM |
1053 | #else |
1054 | while ( isalnum(ch) || (ch == '-')) | |
1055 | #endif | |
d02b48c6 | 1056 | { |
018e57c7 DSH |
1057 | ch = *(++l); |
1058 | buflen++; | |
d02b48c6 | 1059 | } |
018e57c7 DSH |
1060 | |
1061 | if (buflen == 0) | |
1062 | { | |
1063 | /* | |
4013f3bf | 1064 | * We hit something we cannot deal with, |
657e60fa | 1065 | * it is no command or separator nor |
018e57c7 DSH |
1066 | * alphanumeric, so we call this an error. |
1067 | */ | |
1068 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1069 | SSL_R_INVALID_COMMAND); | |
1070 | retval = found = 0; | |
1071 | l++; | |
1072 | break; | |
1073 | } | |
1074 | ||
1075 | if (rule == CIPHER_SPECIAL) | |
1076 | { | |
4013f3bf | 1077 | found = 0; /* unused -- avoid compiler warning */ |
018e57c7 DSH |
1078 | break; /* special treatment */ |
1079 | } | |
d02b48c6 RE |
1080 | |
1081 | /* check for multi-part specification */ | |
58964a49 RE |
1082 | if (ch == '+') |
1083 | { | |
1084 | multi=1; | |
1085 | l++; | |
1086 | } | |
1087 | else | |
1088 | multi=0; | |
d02b48c6 | 1089 | |
018e57c7 | 1090 | /* |
4013f3bf | 1091 | * Now search for the cipher alias in the ca_list. Be careful |
018e57c7 DSH |
1092 | * with the strncmp, because the "buflen" limitation |
1093 | * will make the rule "ADH:SOME" and the cipher | |
1094 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
4013f3bf BM |
1095 | * So additionally check whether the cipher name found |
1096 | * has the correct length. We can save a strlen() call: | |
018e57c7 | 1097 | * just checking for the '\0' at the right place is |
f65a7578 LJ |
1098 | * sufficient, we have to strncmp() anyway. (We cannot |
1099 | * use strcmp(), because buf is not '\0' terminated.) | |
018e57c7 | 1100 | */ |
52b8dad8 BM |
1101 | j = found = 0; |
1102 | cipher_id = 0; | |
1103 | while (ca_list[j]) | |
018e57c7 | 1104 | { |
f65a7578 LJ |
1105 | if (!strncmp(buf, ca_list[j]->name, buflen) && |
1106 | (ca_list[j]->name[buflen] == '\0')) | |
018e57c7 DSH |
1107 | { |
1108 | found = 1; | |
1109 | break; | |
1110 | } | |
1111 | else | |
1112 | j++; | |
1113 | } | |
52b8dad8 | 1114 | |
018e57c7 DSH |
1115 | if (!found) |
1116 | break; /* ignore this entry */ | |
1117 | ||
52b8dad8 BM |
1118 | if (ca_list[j]->algorithm_mkey) |
1119 | { | |
1120 | if (alg_mkey) | |
1121 | { | |
1122 | alg_mkey &= ca_list[j]->algorithm_mkey; | |
1123 | if (!alg_mkey) { found = 0; break; } | |
1124 | } | |
1125 | else | |
1126 | alg_mkey = ca_list[j]->algorithm_mkey; | |
1127 | } | |
1128 | ||
1129 | if (ca_list[j]->algorithm_auth) | |
1130 | { | |
1131 | if (alg_auth) | |
1132 | { | |
1133 | alg_auth &= ca_list[j]->algorithm_auth; | |
1134 | if (!alg_auth) { found = 0; break; } | |
1135 | } | |
1136 | else | |
1137 | alg_auth = ca_list[j]->algorithm_auth; | |
1138 | } | |
1139 | ||
1140 | if (ca_list[j]->algorithm_enc) | |
1141 | { | |
1142 | if (alg_enc) | |
1143 | { | |
1144 | alg_enc &= ca_list[j]->algorithm_enc; | |
1145 | if (!alg_enc) { found = 0; break; } | |
1146 | } | |
1147 | else | |
1148 | alg_enc = ca_list[j]->algorithm_enc; | |
1149 | } | |
1150 | ||
1151 | if (ca_list[j]->algorithm_mac) | |
1152 | { | |
1153 | if (alg_mac) | |
1154 | { | |
1155 | alg_mac &= ca_list[j]->algorithm_mac; | |
1156 | if (!alg_mac) { found = 0; break; } | |
1157 | } | |
1158 | else | |
1159 | alg_mac = ca_list[j]->algorithm_mac; | |
1160 | } | |
1161 | ||
1162 | if (ca_list[j]->algo_strength & SSL_EXP_MASK) | |
1163 | { | |
1164 | if (algo_strength & SSL_EXP_MASK) | |
1165 | { | |
1166 | algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; | |
1167 | if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } | |
1168 | } | |
1169 | else | |
1170 | algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; | |
1171 | } | |
1172 | ||
1173 | if (ca_list[j]->algo_strength & SSL_STRONG_MASK) | |
1174 | { | |
1175 | if (algo_strength & SSL_STRONG_MASK) | |
1176 | { | |
1177 | algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; | |
1178 | if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } | |
1179 | } | |
1180 | else | |
1181 | algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; | |
1182 | } | |
1183 | ||
ed65f7dc BM |
1184 | if (ca_list[j]->valid) |
1185 | { | |
52b8dad8 BM |
1186 | /* explicit ciphersuite found; its protocol version |
1187 | * does not become part of the search pattern!*/ | |
1188 | ||
ed65f7dc | 1189 | cipher_id = ca_list[j]->id; |
ed65f7dc | 1190 | } |
52b8dad8 BM |
1191 | else |
1192 | { | |
1193 | /* not an explicit ciphersuite; only in this case, the | |
1194 | * protocol version is considered part of the search pattern */ | |
ed65f7dc | 1195 | |
52b8dad8 BM |
1196 | if (ca_list[j]->algorithm_ssl) |
1197 | { | |
1198 | if (alg_ssl) | |
1199 | { | |
1200 | alg_ssl &= ca_list[j]->algorithm_ssl; | |
1201 | if (!alg_ssl) { found = 0; break; } | |
1202 | } | |
1203 | else | |
1204 | alg_ssl = ca_list[j]->algorithm_ssl; | |
1205 | } | |
1206 | } | |
1207 | ||
d02b48c6 RE |
1208 | if (!multi) break; |
1209 | } | |
018e57c7 | 1210 | |
4013f3bf BM |
1211 | /* |
1212 | * Ok, we have the rule, now apply it | |
1213 | */ | |
1214 | if (rule == CIPHER_SPECIAL) | |
1215 | { /* special command */ | |
1216 | ok = 0; | |
1217 | if ((buflen == 8) && | |
1218 | !strncmp(buf, "STRENGTH", 8)) | |
a717831d | 1219 | ok = ssl_cipher_strength_sort(head_p, tail_p); |
4013f3bf BM |
1220 | else |
1221 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1222 | SSL_R_INVALID_COMMAND); | |
1223 | if (ok == 0) | |
1224 | retval = 0; | |
018e57c7 | 1225 | /* |
4013f3bf BM |
1226 | * We do not support any "multi" options |
1227 | * together with "@", so throw away the | |
1228 | * rest of the command, if any left, until | |
1229 | * end or ':' is found. | |
018e57c7 | 1230 | */ |
52b8dad8 | 1231 | while ((*l != '\0') && !ITEM_SEP(*l)) |
4013f3bf BM |
1232 | l++; |
1233 | } | |
1234 | else if (found) | |
1235 | { | |
52b8dad8 BM |
1236 | ssl_cipher_apply_rule(cipher_id, |
1237 | alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, | |
1238 | rule, -1, head_p, tail_p); | |
4013f3bf BM |
1239 | } |
1240 | else | |
1241 | { | |
52b8dad8 | 1242 | while ((*l != '\0') && !ITEM_SEP(*l)) |
4013f3bf BM |
1243 | l++; |
1244 | } | |
1245 | if (*l == '\0') break; /* done */ | |
d02b48c6 RE |
1246 | } |
1247 | ||
018e57c7 DSH |
1248 | return(retval); |
1249 | } | |
1250 | ||
1251 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, | |
1252 | STACK_OF(SSL_CIPHER) **cipher_list, | |
1253 | STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
1254 | const char *rule_str) | |
1255 | { | |
1256 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; | |
52b8dad8 | 1257 | unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; |
f0747cd9 | 1258 | STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; |
018e57c7 | 1259 | const char *rule_p; |
3822740c | 1260 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; |
babb3798 | 1261 | const SSL_CIPHER **ca_list = NULL; |
018e57c7 DSH |
1262 | |
1263 | /* | |
1264 | * Return with error if nothing to do. | |
1265 | */ | |
f0747cd9 NL |
1266 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) |
1267 | return NULL; | |
018e57c7 | 1268 | |
018e57c7 DSH |
1269 | /* |
1270 | * To reduce the work to do we only want to process the compiled | |
1271 | * in algorithms, so we first get the mask of disabled ciphers. | |
1272 | */ | |
52b8dad8 | 1273 | ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); |
018e57c7 DSH |
1274 | |
1275 | /* | |
1276 | * Now we have to collect the available ciphers from the compiled | |
1277 | * in ciphers. We cannot get more than the number compiled in, so | |
1278 | * it is used for allocation. | |
1279 | */ | |
1280 | num_of_ciphers = ssl_method->num_ciphers(); | |
f9b3bff6 RL |
1281 | #ifdef KSSL_DEBUG |
1282 | printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); | |
1283 | #endif /* KSSL_DEBUG */ | |
3822740c RL |
1284 | co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); |
1285 | if (co_list == NULL) | |
d02b48c6 | 1286 | { |
018e57c7 DSH |
1287 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
1288 | return(NULL); /* Failure */ | |
1289 | } | |
58964a49 | 1290 | |
52b8dad8 BM |
1291 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, |
1292 | disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, | |
1293 | co_list, &head, &tail); | |
018e57c7 | 1294 | |
0a05123a BM |
1295 | |
1296 | /* Now arrange all ciphers by preference: */ | |
1297 | ||
fd5bc65c BM |
1298 | /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ |
1299 | ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); | |
1300 | ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1301 | ||
aa79dd68 | 1302 | /* AES is our preferred symmetric cipher */ |
0a05123a BM |
1303 | ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); |
1304 | ||
aa79dd68 | 1305 | /* Temporarily enable everything else for sorting */ |
0a05123a BM |
1306 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); |
1307 | ||
aa79dd68 BM |
1308 | /* Low priority for MD5 */ |
1309 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); | |
1310 | ||
0a05123a BM |
1311 | /* Move anonymous ciphers to the end. Usually, these will remain disabled. |
1312 | * (For applications that allow them, they aren't too bad, but we prefer | |
1313 | * authenticated ciphers.) */ | |
1314 | ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); | |
1315 | ||
e0418639 | 1316 | /* Move ciphers without forward secrecy to the end */ |
0a05123a | 1317 | ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
e0418639 | 1318 | /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ |
0a05123a | 1319 | ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
e0418639 | 1320 | ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
114c9c36 | 1321 | ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
0a05123a BM |
1322 | |
1323 | /* RC4 is sort-of broken -- move the the end */ | |
1324 | ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); | |
1325 | ||
1326 | /* Now sort by symmetric encryption strength. The above ordering remains | |
1327 | * in force within each class */ | |
1328 | if (!ssl_cipher_strength_sort(&head, &tail)) | |
1329 | { | |
1330 | OPENSSL_free(co_list); | |
1331 | return NULL; | |
1332 | } | |
1333 | ||
1334 | /* Now disable everything (maintaining the ordering!) */ | |
1335 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1336 | ||
1337 | ||
018e57c7 DSH |
1338 | /* |
1339 | * We also need cipher aliases for selecting based on the rule_str. | |
1340 | * There might be two types of entries in the rule_str: 1) names | |
1341 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1342 | * For 1) we need the available ciphers and for 2) the cipher | |
657e60fa | 1343 | * groups of cipher_aliases added together in one list (otherwise |
018e57c7 DSH |
1344 | * we would be happy with just the cipher_aliases table). |
1345 | */ | |
1346 | num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); | |
1347 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; | |
babb3798 | 1348 | ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); |
018e57c7 DSH |
1349 | if (ca_list == NULL) |
1350 | { | |
3822740c | 1351 | OPENSSL_free(co_list); |
018e57c7 DSH |
1352 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
1353 | return(NULL); /* Failure */ | |
1354 | } | |
52b8dad8 BM |
1355 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, |
1356 | disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, | |
1357 | head); | |
018e57c7 DSH |
1358 | |
1359 | /* | |
1360 | * If the rule_string begins with DEFAULT, apply the default rule | |
1361 | * before using the (possibly available) additional rules. | |
1362 | */ | |
1363 | ok = 1; | |
1364 | rule_p = rule_str; | |
1365 | if (strncmp(rule_str,"DEFAULT",7) == 0) | |
1366 | { | |
1367 | ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, | |
a717831d | 1368 | &head, &tail, ca_list); |
018e57c7 DSH |
1369 | rule_p += 7; |
1370 | if (*rule_p == ':') | |
1371 | rule_p++; | |
1372 | } | |
58964a49 | 1373 | |
018e57c7 | 1374 | if (ok && (strlen(rule_p) > 0)) |
a717831d | 1375 | ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); |
d02b48c6 | 1376 | |
26a3a48d | 1377 | OPENSSL_free(ca_list); /* Not needed anymore */ |
018e57c7 DSH |
1378 | |
1379 | if (!ok) | |
1380 | { /* Rule processing failure */ | |
3822740c | 1381 | OPENSSL_free(co_list); |
018e57c7 DSH |
1382 | return(NULL); |
1383 | } | |
0a05123a | 1384 | |
018e57c7 DSH |
1385 | /* |
1386 | * Allocate new "cipherstack" for the result, return with error | |
1387 | * if we cannot get one. | |
1388 | */ | |
62324627 | 1389 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) |
018e57c7 | 1390 | { |
3822740c | 1391 | OPENSSL_free(co_list); |
018e57c7 | 1392 | return(NULL); |
d02b48c6 RE |
1393 | } |
1394 | ||
018e57c7 DSH |
1395 | /* |
1396 | * The cipher selection for the list is done. The ciphers are added | |
1397 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1398 | */ | |
1399 | for (curr = head; curr != NULL; curr = curr->next) | |
d02b48c6 | 1400 | { |
58964a49 | 1401 | if (curr->active) |
d02b48c6 | 1402 | { |
018e57c7 | 1403 | sk_SSL_CIPHER_push(cipherstack, curr->cipher); |
d02b48c6 | 1404 | #ifdef CIPHER_DEBUG |
58964a49 | 1405 | printf("<%s>\n",curr->cipher->name); |
d02b48c6 | 1406 | #endif |
d02b48c6 RE |
1407 | } |
1408 | } | |
3822740c | 1409 | OPENSSL_free(co_list); /* Not needed any longer */ |
018e57c7 | 1410 | |
f0747cd9 NL |
1411 | tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); |
1412 | if (tmp_cipher_list == NULL) | |
018e57c7 DSH |
1413 | { |
1414 | sk_SSL_CIPHER_free(cipherstack); | |
f0747cd9 | 1415 | return NULL; |
018e57c7 | 1416 | } |
f0747cd9 NL |
1417 | if (*cipher_list != NULL) |
1418 | sk_SSL_CIPHER_free(*cipher_list); | |
1419 | *cipher_list = cipherstack; | |
1420 | if (*cipher_list_by_id != NULL) | |
1421 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1422 | *cipher_list_by_id = tmp_cipher_list; | |
a6fbcb42 | 1423 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); |
d02b48c6 | 1424 | |
018e57c7 | 1425 | return(cipherstack); |
d02b48c6 RE |
1426 | } |
1427 | ||
6b691a5c | 1428 | char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) |
d02b48c6 | 1429 | { |
b1c4fe36 | 1430 | int is_export,pkl,kl; |
f4bfd357 NL |
1431 | const char *ver,*exp_str; |
1432 | const char *kx,*au,*enc,*mac; | |
52b8dad8 | 1433 | unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2,alg_s; |
f9b3bff6 | 1434 | #ifdef KSSL_DEBUG |
52b8dad8 | 1435 | static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; |
f9b3bff6 | 1436 | #else |
f4bfd357 | 1437 | static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; |
f9b3bff6 RL |
1438 | #endif /* KSSL_DEBUG */ |
1439 | ||
52b8dad8 BM |
1440 | alg_mkey = cipher->algorithm_mkey; |
1441 | alg_auth = cipher->algorithm_auth; | |
1442 | alg_enc = cipher->algorithm_enc; | |
1443 | alg_mac = cipher->algorithm_mac; | |
1444 | alg_ssl = cipher->algorithm_ssl; | |
1445 | ||
018e57c7 | 1446 | alg_s=cipher->algo_strength; |
d02b48c6 RE |
1447 | alg2=cipher->algorithm2; |
1448 | ||
018e57c7 DSH |
1449 | is_export=SSL_C_IS_EXPORT(cipher); |
1450 | pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); | |
1451 | kl=SSL_C_EXPORT_KEYLENGTH(cipher); | |
d8ec0dcf | 1452 | exp_str=is_export?" export":""; |
ea262260 | 1453 | |
52b8dad8 | 1454 | if (alg_ssl & SSL_SSLV2) |
d02b48c6 | 1455 | ver="SSLv2"; |
52b8dad8 | 1456 | else if (alg_ssl & SSL_SSLV3) |
d02b48c6 RE |
1457 | ver="SSLv3"; |
1458 | else | |
1459 | ver="unknown"; | |
1460 | ||
52b8dad8 | 1461 | switch (alg_mkey) |
d02b48c6 RE |
1462 | { |
1463 | case SSL_kRSA: | |
b1c4fe36 | 1464 | kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; |
d02b48c6 RE |
1465 | break; |
1466 | case SSL_kDHr: | |
1467 | kx="DH/RSA"; | |
1468 | break; | |
1469 | case SSL_kDHd: | |
1470 | kx="DH/DSS"; | |
1471 | break; | |
89bbe14c BM |
1472 | case SSL_kKRB5: |
1473 | kx="KRB5"; | |
d02b48c6 RE |
1474 | break; |
1475 | case SSL_kEDH: | |
b1c4fe36 | 1476 | kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; |
d02b48c6 | 1477 | break; |
89bbe14c BM |
1478 | case SSL_kECDHr: |
1479 | kx="ECDH/RSA"; | |
1480 | break; | |
1481 | case SSL_kECDHe: | |
1482 | kx="ECDH/ECDSA"; | |
1483 | break; | |
1484 | case SSL_kEECDH: | |
1485 | kx="ECDH"; | |
ea262260 | 1486 | break; |
ddac1974 NL |
1487 | case SSL_kPSK: |
1488 | kx="PSK"; | |
1489 | break; | |
d02b48c6 RE |
1490 | default: |
1491 | kx="unknown"; | |
1492 | } | |
1493 | ||
52b8dad8 | 1494 | switch (alg_auth) |
d02b48c6 RE |
1495 | { |
1496 | case SSL_aRSA: | |
1497 | au="RSA"; | |
1498 | break; | |
1499 | case SSL_aDSS: | |
1500 | au="DSS"; | |
1501 | break; | |
1502 | case SSL_aDH: | |
1503 | au="DH"; | |
1504 | break; | |
89bbe14c BM |
1505 | case SSL_aKRB5: |
1506 | au="KRB5"; | |
1507 | break; | |
1508 | case SSL_aECDH: | |
1509 | au="ECDH"; | |
1510 | break; | |
d02b48c6 RE |
1511 | case SSL_aNULL: |
1512 | au="None"; | |
1513 | break; | |
ea262260 BM |
1514 | case SSL_aECDSA: |
1515 | au="ECDSA"; | |
1516 | break; | |
ddac1974 NL |
1517 | case SSL_aPSK: |
1518 | au="PSK"; | |
1519 | break; | |
d02b48c6 RE |
1520 | default: |
1521 | au="unknown"; | |
1522 | break; | |
1523 | } | |
1524 | ||
52b8dad8 | 1525 | switch (alg_enc) |
d02b48c6 RE |
1526 | { |
1527 | case SSL_DES: | |
b1c4fe36 | 1528 | enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; |
d02b48c6 RE |
1529 | break; |
1530 | case SSL_3DES: | |
1531 | enc="3DES(168)"; | |
1532 | break; | |
1533 | case SSL_RC4: | |
b1c4fe36 | 1534 | enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") |
06ab81f9 | 1535 | :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); |
d02b48c6 RE |
1536 | break; |
1537 | case SSL_RC2: | |
b1c4fe36 | 1538 | enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; |
d02b48c6 RE |
1539 | break; |
1540 | case SSL_IDEA: | |
1541 | enc="IDEA(128)"; | |
1542 | break; | |
d02b48c6 RE |
1543 | case SSL_eNULL: |
1544 | enc="None"; | |
1545 | break; | |
52b8dad8 BM |
1546 | case SSL_AES128: |
1547 | enc="AES(128)"; | |
259810e0 | 1548 | break; |
52b8dad8 BM |
1549 | case SSL_AES256: |
1550 | enc="AES(256)"; | |
1551 | break; | |
1552 | case SSL_CAMELLIA128: | |
1553 | enc="Camellia(128)"; | |
1554 | break; | |
1555 | case SSL_CAMELLIA256: | |
1556 | enc="Camellia(256)"; | |
f3dea9a5 | 1557 | break; |
96afc1cf BM |
1558 | case SSL_SEED: |
1559 | enc="SEED(128)"; | |
1560 | break; | |
d02b48c6 RE |
1561 | default: |
1562 | enc="unknown"; | |
1563 | break; | |
1564 | } | |
1565 | ||
52b8dad8 | 1566 | switch (alg_mac) |
d02b48c6 RE |
1567 | { |
1568 | case SSL_MD5: | |
1569 | mac="MD5"; | |
1570 | break; | |
d02b48c6 RE |
1571 | case SSL_SHA1: |
1572 | mac="SHA1"; | |
1573 | break; | |
1574 | default: | |
1575 | mac="unknown"; | |
1576 | break; | |
1577 | } | |
1578 | ||
1579 | if (buf == NULL) | |
1580 | { | |
063c0502 | 1581 | len=128; |
26a3a48d RL |
1582 | buf=OPENSSL_malloc(len); |
1583 | if (buf == NULL) return("OPENSSL_malloc Error"); | |
d02b48c6 RE |
1584 | } |
1585 | else if (len < 128) | |
1586 | return("Buffer too small"); | |
1587 | ||
f9b3bff6 | 1588 | #ifdef KSSL_DEBUG |
52b8dad8 | 1589 | BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); |
f9b3bff6 | 1590 | #else |
d8ec0dcf | 1591 | BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); |
f9b3bff6 | 1592 | #endif /* KSSL_DEBUG */ |
d02b48c6 RE |
1593 | return(buf); |
1594 | } | |
1595 | ||
0821bcd4 | 1596 | char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
d02b48c6 RE |
1597 | { |
1598 | int i; | |
1599 | ||
58964a49 | 1600 | if (c == NULL) return("(NONE)"); |
d02b48c6 RE |
1601 | i=(int)(c->id>>24L); |
1602 | if (i == 3) | |
58964a49 | 1603 | return("TLSv1/SSLv3"); |
d02b48c6 RE |
1604 | else if (i == 2) |
1605 | return("SSLv2"); | |
1606 | else | |
1607 | return("unknown"); | |
1608 | } | |
1609 | ||
1610 | /* return the actual cipher being used */ | |
0821bcd4 | 1611 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
d02b48c6 RE |
1612 | { |
1613 | if (c != NULL) | |
1614 | return(c->name); | |
1615 | return("(NONE)"); | |
1616 | } | |
1617 | ||
657e60fa | 1618 | /* number of bits for symmetric cipher */ |
0821bcd4 | 1619 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
d02b48c6 | 1620 | { |
018e57c7 | 1621 | int ret=0; |
d02b48c6 RE |
1622 | |
1623 | if (c != NULL) | |
1624 | { | |
018e57c7 DSH |
1625 | if (alg_bits != NULL) *alg_bits = c->alg_bits; |
1626 | ret = c->strength_bits; | |
d02b48c6 | 1627 | } |
d02b48c6 RE |
1628 | return(ret); |
1629 | } | |
1630 | ||
6b691a5c | 1631 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
413c4f45 MC |
1632 | { |
1633 | SSL_COMP *ctmp; | |
1634 | int i,nn; | |
1635 | ||
1636 | if ((n == 0) || (sk == NULL)) return(NULL); | |
f73e07cf | 1637 | nn=sk_SSL_COMP_num(sk); |
413c4f45 MC |
1638 | for (i=0; i<nn; i++) |
1639 | { | |
f73e07cf | 1640 | ctmp=sk_SSL_COMP_value(sk,i); |
413c4f45 MC |
1641 | if (ctmp->id == n) |
1642 | return(ctmp); | |
1643 | } | |
1644 | return(NULL); | |
1645 | } | |
1646 | ||
09b6c2ef DSH |
1647 | #ifdef OPENSSL_NO_COMP |
1648 | void *SSL_COMP_get_compression_methods(void) | |
1649 | { | |
1650 | return NULL; | |
1651 | } | |
1652 | int SSL_COMP_add_compression_method(int id, void *cm) | |
1653 | { | |
1654 | return 1; | |
1655 | } | |
1656 | ||
1657 | const char *SSL_COMP_get_name(const void *comp) | |
1658 | { | |
1659 | return NULL; | |
1660 | } | |
1661 | #else | |
6b691a5c | 1662 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
413c4f45 | 1663 | { |
7ba666fa | 1664 | load_builtin_compressions(); |
413c4f45 MC |
1665 | return(ssl_comp_methods); |
1666 | } | |
1667 | ||
6b691a5c | 1668 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
413c4f45 MC |
1669 | { |
1670 | SSL_COMP *comp; | |
413c4f45 | 1671 | |
9f495243 RL |
1672 | if (cm == NULL || cm->type == NID_undef) |
1673 | return 1; | |
1674 | ||
7ba666fa RL |
1675 | /* According to draft-ietf-tls-compression-04.txt, the |
1676 | compression number ranges should be the following: | |
1677 | ||
1678 | 0 to 63: methods defined by the IETF | |
1679 | 64 to 192: external party methods assigned by IANA | |
1680 | 193 to 255: reserved for private use */ | |
1681 | if (id < 193 || id > 255) | |
1682 | { | |
1683 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
1684 | return 0; | |
1685 | } | |
1686 | ||
058123af | 1687 | MemCheck_off(); |
26a3a48d | 1688 | comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); |
413c4f45 MC |
1689 | comp->id=id; |
1690 | comp->method=cm; | |
7ba666fa | 1691 | load_builtin_compressions(); |
82423549 RL |
1692 | if (ssl_comp_methods |
1693 | && !sk_SSL_COMP_find(ssl_comp_methods,comp)) | |
1694 | { | |
1695 | OPENSSL_free(comp); | |
1696 | MemCheck_on(); | |
1697 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); | |
1698 | return(1); | |
1699 | } | |
1700 | else if ((ssl_comp_methods == NULL) | |
7ba666fa | 1701 | || !sk_SSL_COMP_push(ssl_comp_methods,comp)) |
413c4f45 | 1702 | { |
7ba666fa | 1703 | OPENSSL_free(comp); |
058123af | 1704 | MemCheck_on(); |
413c4f45 | 1705 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); |
f6e8c19e | 1706 | return(1); |
413c4f45 MC |
1707 | } |
1708 | else | |
058123af RL |
1709 | { |
1710 | MemCheck_on(); | |
f6e8c19e | 1711 | return(0); |
058123af | 1712 | } |
413c4f45 | 1713 | } |
377dcdba RL |
1714 | |
1715 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
1716 | { | |
1717 | if (comp) | |
1718 | return comp->name; | |
1719 | return NULL; | |
1720 | } | |
1721 | ||
09b6c2ef | 1722 | #endif |