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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 | */ | |
6d2cd23f BM |
58 | /* ==================================================================== |
59 | * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. | |
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 | */ | |
d02b48c6 | 116 | #include <stdio.h> |
ec577822 BM |
117 | #include <openssl/objects.h> |
118 | #include <openssl/comp.h> | |
d02b48c6 RE |
119 | #include "ssl_locl.h" |
120 | ||
121 | #define SSL_ENC_DES_IDX 0 | |
122 | #define SSL_ENC_3DES_IDX 1 | |
123 | #define SSL_ENC_RC4_IDX 2 | |
124 | #define SSL_ENC_RC2_IDX 3 | |
125 | #define SSL_ENC_IDEA_IDX 4 | |
126 | #define SSL_ENC_eFZA_IDX 5 | |
127 | #define SSL_ENC_NULL_IDX 6 | |
deb2c1a1 DSH |
128 | #define SSL_ENC_AES128_IDX 7 |
129 | #define SSL_ENC_AES256_IDX 8 | |
e18eef3d BM |
130 | #define SSL_ENC_CAMELLIA128_IDX 9 |
131 | #define SSL_ENC_CAMELLIA256_IDX 10 | |
1139eeec DSH |
132 | #define SSL_ENC_SEED_IDX 11 |
133 | #define SSL_ENC_NUM_IDX 12 | |
e18eef3d | 134 | |
d02b48c6 | 135 | |
e778802f | 136 | static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ |
d02b48c6 RE |
137 | NULL,NULL,NULL,NULL,NULL,NULL, |
138 | }; | |
139 | ||
7ba666fa RL |
140 | #define SSL_COMP_NULL_IDX 0 |
141 | #define SSL_COMP_ZLIB_IDX 1 | |
142 | #define SSL_COMP_NUM_IDX 2 | |
143 | ||
f73e07cf | 144 | static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; |
413c4f45 | 145 | |
d02b48c6 | 146 | #define SSL_MD_MD5_IDX 0 |
58964a49 RE |
147 | #define SSL_MD_SHA1_IDX 1 |
148 | #define SSL_MD_NUM_IDX 2 | |
e778802f | 149 | static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ |
58964a49 | 150 | NULL,NULL, |
d02b48c6 RE |
151 | }; |
152 | ||
d02b48c6 RE |
153 | #define CIPHER_ADD 1 |
154 | #define CIPHER_KILL 2 | |
155 | #define CIPHER_DEL 3 | |
58964a49 | 156 | #define CIPHER_ORD 4 |
018e57c7 | 157 | #define CIPHER_SPECIAL 5 |
d02b48c6 | 158 | |
58964a49 RE |
159 | typedef struct cipher_order_st |
160 | { | |
161 | SSL_CIPHER *cipher; | |
162 | int active; | |
163 | int dead; | |
164 | struct cipher_order_st *next,*prev; | |
165 | } CIPHER_ORDER; | |
166 | ||
018e57c7 | 167 | static const SSL_CIPHER cipher_aliases[]={ |
ea4f109c | 168 | /* Don't include eNULL unless specifically enabled. */ |
ea262260 BM |
169 | /* Don't include ECC in ALL because these ciphers are not yet official. */ |
170 | {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */ | |
171 | /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ | |
172 | {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ | |
c6ccf055 | 173 | {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, |
ea262260 | 174 | {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ |
018e57c7 DSH |
175 | {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, |
176 | {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, | |
177 | {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, | |
178 | {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, | |
179 | {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, | |
180 | {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, | |
ea262260 | 181 | {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, |
018e57c7 | 182 | {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, |
f9b3bff6 | 183 | {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ |
018e57c7 DSH |
184 | {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, |
185 | {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, | |
186 | {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, | |
187 | {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, | |
188 | {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, | |
189 | {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, | |
190 | ||
191 | {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, | |
192 | {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, | |
193 | {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, | |
194 | {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, | |
5fdf0666 | 195 | #ifndef OPENSSL_NO_IDEA |
018e57c7 | 196 | {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, |
5fdf0666 | 197 | #endif |
1139eeec | 198 | {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0}, |
018e57c7 DSH |
199 | {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, |
200 | {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, | |
deb2c1a1 | 201 | {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, |
1139eeec | 202 | {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, |
018e57c7 DSH |
203 | |
204 | {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, | |
205 | {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, | |
206 | {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, | |
207 | ||
208 | {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, | |
f9b3bff6 | 209 | {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, |
018e57c7 DSH |
210 | {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, |
211 | {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, | |
212 | {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, | |
213 | ||
214 | {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, | |
215 | {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, | |
216 | {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, | |
217 | ||
218 | {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, | |
219 | {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, | |
220 | {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, | |
221 | {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, | |
222 | {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, | |
223 | {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, | |
224 | {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, | |
086d475f | 225 | {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE}, |
d02b48c6 RE |
226 | }; |
227 | ||
cd9911fd | 228 | void ssl_load_ciphers(void) |
d02b48c6 | 229 | { |
d02b48c6 RE |
230 | ssl_cipher_methods[SSL_ENC_DES_IDX]= |
231 | EVP_get_cipherbyname(SN_des_cbc); | |
232 | ssl_cipher_methods[SSL_ENC_3DES_IDX]= | |
233 | EVP_get_cipherbyname(SN_des_ede3_cbc); | |
234 | ssl_cipher_methods[SSL_ENC_RC4_IDX]= | |
235 | EVP_get_cipherbyname(SN_rc4); | |
236 | ssl_cipher_methods[SSL_ENC_RC2_IDX]= | |
237 | EVP_get_cipherbyname(SN_rc2_cbc); | |
5fdf0666 | 238 | #ifndef OPENSSL_NO_IDEA |
d02b48c6 RE |
239 | ssl_cipher_methods[SSL_ENC_IDEA_IDX]= |
240 | EVP_get_cipherbyname(SN_idea_cbc); | |
5fdf0666 RL |
241 | #else |
242 | ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; | |
243 | #endif | |
deb2c1a1 DSH |
244 | ssl_cipher_methods[SSL_ENC_AES128_IDX]= |
245 | EVP_get_cipherbyname(SN_aes_128_cbc); | |
246 | ssl_cipher_methods[SSL_ENC_AES256_IDX]= | |
247 | EVP_get_cipherbyname(SN_aes_256_cbc); | |
e18eef3d BM |
248 | ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= |
249 | EVP_get_cipherbyname(SN_camellia_128_cbc); | |
250 | ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= | |
251 | EVP_get_cipherbyname(SN_camellia_256_cbc); | |
1139eeec DSH |
252 | ssl_cipher_methods[SSL_ENC_SEED_IDX]= |
253 | EVP_get_cipherbyname(SN_seed_cbc); | |
d02b48c6 RE |
254 | |
255 | ssl_digest_methods[SSL_MD_MD5_IDX]= | |
256 | EVP_get_digestbyname(SN_md5); | |
d02b48c6 RE |
257 | ssl_digest_methods[SSL_MD_SHA1_IDX]= |
258 | EVP_get_digestbyname(SN_sha1); | |
259 | } | |
260 | ||
54f51116 DSH |
261 | |
262 | #ifndef OPENSSL_NO_COMP | |
263 | ||
7ba666fa RL |
264 | static int sk_comp_cmp(const SSL_COMP * const *a, |
265 | const SSL_COMP * const *b) | |
266 | { | |
267 | return((*a)->id-(*b)->id); | |
268 | } | |
269 | ||
270 | static void load_builtin_compressions(void) | |
271 | { | |
6d2cd23f | 272 | int got_write_lock = 0; |
f70ddce7 | 273 | |
6d2cd23f | 274 | CRYPTO_r_lock(CRYPTO_LOCK_SSL); |
7ba666fa RL |
275 | if (ssl_comp_methods == NULL) |
276 | { | |
6d2cd23f BM |
277 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); |
278 | CRYPTO_w_lock(CRYPTO_LOCK_SSL); | |
279 | got_write_lock = 1; | |
280 | ||
281 | if (ssl_comp_methods == NULL) | |
7ba666fa | 282 | { |
6d2cd23f BM |
283 | SSL_COMP *comp = NULL; |
284 | ||
285 | MemCheck_off(); | |
286 | ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); | |
287 | if (ssl_comp_methods != NULL) | |
7ba666fa | 288 | { |
6d2cd23f BM |
289 | comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); |
290 | if (comp != NULL) | |
7ba666fa | 291 | { |
6d2cd23f BM |
292 | comp->method=COMP_zlib(); |
293 | if (comp->method | |
294 | && comp->method->type == NID_undef) | |
295 | OPENSSL_free(comp); | |
296 | else | |
297 | { | |
298 | comp->id=SSL_COMP_ZLIB_IDX; | |
299 | comp->name=comp->method->name; | |
300 | sk_SSL_COMP_push(ssl_comp_methods,comp); | |
301 | } | |
7ba666fa RL |
302 | } |
303 | } | |
6d2cd23f | 304 | MemCheck_on(); |
7ba666fa | 305 | } |
7ba666fa | 306 | } |
6d2cd23f BM |
307 | |
308 | if (got_write_lock) | |
309 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL); | |
310 | else | |
311 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); | |
7ba666fa | 312 | } |
54f51116 | 313 | #endif |
7ba666fa | 314 | |
0821bcd4 | 315 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
6b691a5c | 316 | const EVP_MD **md, SSL_COMP **comp) |
d02b48c6 RE |
317 | { |
318 | int i; | |
413c4f45 | 319 | SSL_CIPHER *c; |
d02b48c6 | 320 | |
413c4f45 | 321 | c=s->cipher; |
d02b48c6 | 322 | if (c == NULL) return(0); |
413c4f45 MC |
323 | if (comp != NULL) |
324 | { | |
325 | SSL_COMP ctmp; | |
54f51116 | 326 | #ifndef OPENSSL_NO_COMP |
7ba666fa | 327 | load_builtin_compressions(); |
54f51116 | 328 | #endif |
413c4f45 | 329 | |
7ba666fa RL |
330 | *comp=NULL; |
331 | ctmp.id=s->compress_meth; | |
332 | if (ssl_comp_methods != NULL) | |
333 | { | |
f73e07cf | 334 | i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); |
413c4f45 | 335 | if (i >= 0) |
f73e07cf | 336 | *comp=sk_SSL_COMP_value(ssl_comp_methods,i); |
413c4f45 MC |
337 | else |
338 | *comp=NULL; | |
339 | } | |
340 | } | |
341 | ||
342 | if ((enc == NULL) || (md == NULL)) return(0); | |
d02b48c6 RE |
343 | |
344 | switch (c->algorithms & SSL_ENC_MASK) | |
345 | { | |
346 | case SSL_DES: | |
347 | i=SSL_ENC_DES_IDX; | |
348 | break; | |
349 | case SSL_3DES: | |
350 | i=SSL_ENC_3DES_IDX; | |
351 | break; | |
352 | case SSL_RC4: | |
353 | i=SSL_ENC_RC4_IDX; | |
354 | break; | |
355 | case SSL_RC2: | |
356 | i=SSL_ENC_RC2_IDX; | |
357 | break; | |
358 | case SSL_IDEA: | |
359 | i=SSL_ENC_IDEA_IDX; | |
360 | break; | |
361 | case SSL_eNULL: | |
362 | i=SSL_ENC_NULL_IDX; | |
363 | break; | |
deb2c1a1 | 364 | case SSL_AES: |
259810e0 BL |
365 | switch(c->alg_bits) |
366 | { | |
deb2c1a1 DSH |
367 | case 128: i=SSL_ENC_AES128_IDX; break; |
368 | case 256: i=SSL_ENC_AES256_IDX; break; | |
259810e0 BL |
369 | default: i=-1; break; |
370 | } | |
371 | break; | |
e18eef3d BM |
372 | case SSL_CAMELLIA: |
373 | switch(c->alg_bits) | |
374 | { | |
375 | case 128: i=SSL_ENC_CAMELLIA128_IDX; break; | |
376 | case 256: i=SSL_ENC_CAMELLIA256_IDX; break; | |
377 | default: i=-1; break; | |
378 | } | |
379 | break; | |
1139eeec DSH |
380 | case SSL_SEED: |
381 | i=SSL_ENC_SEED_IDX; | |
382 | break; | |
e18eef3d | 383 | |
d02b48c6 RE |
384 | default: |
385 | i= -1; | |
386 | break; | |
387 | } | |
388 | ||
389 | if ((i < 0) || (i > SSL_ENC_NUM_IDX)) | |
390 | *enc=NULL; | |
391 | else | |
392 | { | |
393 | if (i == SSL_ENC_NULL_IDX) | |
394 | *enc=EVP_enc_null(); | |
395 | else | |
396 | *enc=ssl_cipher_methods[i]; | |
397 | } | |
398 | ||
399 | switch (c->algorithms & SSL_MAC_MASK) | |
400 | { | |
401 | case SSL_MD5: | |
402 | i=SSL_MD_MD5_IDX; | |
403 | break; | |
d02b48c6 RE |
404 | case SSL_SHA1: |
405 | i=SSL_MD_SHA1_IDX; | |
406 | break; | |
407 | default: | |
408 | i= -1; | |
409 | break; | |
410 | } | |
411 | if ((i < 0) || (i > SSL_MD_NUM_IDX)) | |
412 | *md=NULL; | |
413 | else | |
414 | *md=ssl_digest_methods[i]; | |
415 | ||
416 | if ((*enc != NULL) && (*md != NULL)) | |
417 | return(1); | |
418 | else | |
419 | return(0); | |
420 | } | |
421 | ||
58964a49 RE |
422 | #define ITEM_SEP(a) \ |
423 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) | |
424 | ||
6b691a5c UM |
425 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
426 | CIPHER_ORDER **tail) | |
58964a49 RE |
427 | { |
428 | if (curr == *tail) return; | |
429 | if (curr == *head) | |
430 | *head=curr->next; | |
431 | if (curr->prev != NULL) | |
432 | curr->prev->next=curr->next; | |
433 | if (curr->next != NULL) /* should always be true */ | |
434 | curr->next->prev=curr->prev; | |
435 | (*tail)->next=curr; | |
436 | curr->prev= *tail; | |
437 | curr->next=NULL; | |
438 | *tail=curr; | |
439 | } | |
440 | ||
5f4cc234 BM |
441 | struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, |
442 | * where 128-bit and 256-bit algorithms simply will get | |
443 | * separate bits. */ | |
444 | unsigned long mask; /* everything except m256 */ | |
445 | unsigned long m256; /* applies to 256-bit algorithms only */ | |
446 | }; | |
447 | ||
3370b694 | 448 | static struct disabled_masks ssl_cipher_get_disabled(void) |
d02b48c6 | 449 | { |
018e57c7 | 450 | unsigned long mask; |
5f4cc234 BM |
451 | unsigned long m256; |
452 | struct disabled_masks ret; | |
d02b48c6 | 453 | |
018e57c7 | 454 | mask = SSL_kFZA; |
bc36ee62 | 455 | #ifdef OPENSSL_NO_RSA |
018e57c7 | 456 | mask |= SSL_aRSA|SSL_kRSA; |
d02b48c6 | 457 | #endif |
bc36ee62 | 458 | #ifdef OPENSSL_NO_DSA |
018e57c7 | 459 | mask |= SSL_aDSS; |
d02b48c6 | 460 | #endif |
bc36ee62 | 461 | #ifdef OPENSSL_NO_DH |
018e57c7 | 462 | mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; |
d02b48c6 | 463 | #endif |
bc36ee62 | 464 | #ifdef OPENSSL_NO_KRB5 |
f9b3bff6 RL |
465 | mask |= SSL_kKRB5|SSL_aKRB5; |
466 | #endif | |
ea262260 BM |
467 | #ifdef OPENSSL_NO_ECDH |
468 | mask |= SSL_kECDH|SSL_kECDHE; | |
469 | #endif | |
988788f6 | 470 | #ifdef SSL_FORBID_ENULL |
018e57c7 | 471 | mask |= SSL_eNULL; |
d02b48c6 RE |
472 | #endif |
473 | ||
018e57c7 DSH |
474 | mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; |
475 | mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; | |
476 | mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; | |
477 | mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; | |
478 | mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; | |
479 | mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; | |
1139eeec | 480 | mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; |
d02b48c6 | 481 | |
018e57c7 DSH |
482 | mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; |
483 | mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; | |
d02b48c6 | 484 | |
5f4cc234 BM |
485 | /* finally consider algorithms where mask and m256 differ */ |
486 | m256 = mask; | |
487 | mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; | |
488 | mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; | |
489 | m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; | |
490 | m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; | |
491 | ||
492 | ret.mask = mask; | |
493 | ret.m256 = m256; | |
494 | return ret; | |
018e57c7 DSH |
495 | } |
496 | ||
497 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, | |
5f4cc234 BM |
498 | int num_of_ciphers, unsigned long mask, unsigned long m256, |
499 | CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, | |
500 | CIPHER_ORDER **tail_p) | |
018e57c7 | 501 | { |
3822740c | 502 | int i, co_list_num; |
018e57c7 DSH |
503 | SSL_CIPHER *c; |
504 | ||
505 | /* | |
506 | * We have num_of_ciphers descriptions compiled in, depending on the | |
507 | * method selected (SSLv2 and/or SSLv3, TLSv1 etc). | |
508 | * These will later be sorted in a linked list with at most num | |
509 | * entries. | |
510 | */ | |
58964a49 | 511 | |
d02b48c6 | 512 | /* Get the initial list of ciphers */ |
3822740c | 513 | co_list_num = 0; /* actual count of ciphers */ |
018e57c7 | 514 | for (i = 0; i < num_of_ciphers; i++) |
d02b48c6 | 515 | { |
018e57c7 | 516 | c = ssl_method->get_cipher(i); |
5f4cc234 | 517 | #define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) |
d02b48c6 | 518 | /* drop those that use any of that is not available */ |
aeb9ccfa DSH |
519 | #ifdef OPENSSL_FIPS |
520 | if ((c != NULL) && c->valid && !IS_MASKED(c) | |
521 | && (!FIPS_mode() || (c->algo_strength & SSL_FIPS))) | |
522 | #else | |
5f4cc234 | 523 | if ((c != NULL) && c->valid && !IS_MASKED(c)) |
aeb9ccfa | 524 | #endif |
d02b48c6 | 525 | { |
3822740c RL |
526 | co_list[co_list_num].cipher = c; |
527 | co_list[co_list_num].next = NULL; | |
528 | co_list[co_list_num].prev = NULL; | |
529 | co_list[co_list_num].active = 0; | |
530 | co_list_num++; | |
f9b3bff6 RL |
531 | #ifdef KSSL_DEBUG |
532 | printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); | |
533 | #endif /* KSSL_DEBUG */ | |
018e57c7 | 534 | /* |
d02b48c6 | 535 | if (!sk_push(ca_list,(char *)c)) goto err; |
018e57c7 | 536 | */ |
d02b48c6 RE |
537 | } |
538 | } | |
018e57c7 DSH |
539 | |
540 | /* | |
541 | * Prepare linked list from list entries | |
542 | */ | |
3822740c | 543 | for (i = 1; i < co_list_num - 1; i++) |
58964a49 | 544 | { |
3822740c RL |
545 | co_list[i].prev = &(co_list[i-1]); |
546 | co_list[i].next = &(co_list[i+1]); | |
58964a49 | 547 | } |
3822740c | 548 | if (co_list_num > 0) |
58964a49 | 549 | { |
3822740c | 550 | (*head_p) = &(co_list[0]); |
018e57c7 | 551 | (*head_p)->prev = NULL; |
3822740c RL |
552 | (*head_p)->next = &(co_list[1]); |
553 | (*tail_p) = &(co_list[co_list_num - 1]); | |
554 | (*tail_p)->prev = &(co_list[co_list_num - 2]); | |
018e57c7 | 555 | (*tail_p)->next = NULL; |
58964a49 | 556 | } |
018e57c7 | 557 | } |
d02b48c6 | 558 | |
018e57c7 DSH |
559 | static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, |
560 | int num_of_group_aliases, unsigned long mask, | |
561 | CIPHER_ORDER *head) | |
562 | { | |
563 | CIPHER_ORDER *ciph_curr; | |
564 | SSL_CIPHER **ca_curr; | |
565 | int i; | |
d02b48c6 | 566 | |
018e57c7 DSH |
567 | /* |
568 | * First, add the real ciphers as already collected | |
569 | */ | |
570 | ciph_curr = head; | |
571 | ca_curr = ca_list; | |
572 | while (ciph_curr != NULL) | |
d02b48c6 | 573 | { |
018e57c7 DSH |
574 | *ca_curr = ciph_curr->cipher; |
575 | ca_curr++; | |
576 | ciph_curr = ciph_curr->next; | |
d02b48c6 RE |
577 | } |
578 | ||
018e57c7 DSH |
579 | /* |
580 | * Now we add the available ones from the cipher_aliases[] table. | |
581 | * They represent either an algorithm, that must be fully | |
582 | * supported (not match any bit in mask) or represent a cipher | |
583 | * strength value (will be added in any case because algorithms=0). | |
584 | */ | |
585 | for (i = 0; i < num_of_group_aliases; i++) | |
586 | { | |
587 | if ((i == 0) || /* always fetch "ALL" */ | |
588 | !(cipher_aliases[i].algorithms & mask)) | |
589 | { | |
590 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); | |
591 | ca_curr++; | |
592 | } | |
593 | } | |
d02b48c6 | 594 | |
018e57c7 DSH |
595 | *ca_curr = NULL; /* end of list */ |
596 | } | |
d02b48c6 | 597 | |
879b30aa | 598 | static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, |
cbb0b734 | 599 | unsigned long algorithms, unsigned long mask, |
018e57c7 | 600 | unsigned long algo_strength, unsigned long mask_strength, |
3822740c | 601 | int rule, int strength_bits, CIPHER_ORDER *co_list, |
018e57c7 DSH |
602 | CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) |
603 | { | |
604 | CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; | |
605 | SSL_CIPHER *cp; | |
606 | unsigned long ma, ma_s; | |
607 | ||
608 | #ifdef CIPHER_DEBUG | |
609 | printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", | |
610 | rule, algorithms, mask, algo_strength, mask_strength, | |
611 | strength_bits); | |
612 | #endif | |
d02b48c6 | 613 | |
018e57c7 DSH |
614 | curr = head = *head_p; |
615 | curr2 = head; | |
616 | tail2 = tail = *tail_p; | |
d02b48c6 RE |
617 | for (;;) |
618 | { | |
018e57c7 DSH |
619 | if ((curr == NULL) || (curr == tail2)) break; |
620 | curr = curr2; | |
621 | curr2 = curr->next; | |
622 | ||
623 | cp = curr->cipher; | |
624 | ||
879b30aa BM |
625 | /* If explicit cipher suite, match only that one for its own protocol version. |
626 | * Usual selection criteria will be used for similar ciphersuites from other version! */ | |
cbb0b734 | 627 | |
879b30aa | 628 | if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) |
cbb0b734 DSH |
629 | { |
630 | if (cp->id != cipher_id) | |
631 | continue; | |
632 | } | |
633 | ||
018e57c7 DSH |
634 | /* |
635 | * Selection criteria is either the number of strength_bits | |
636 | * or the algorithm used. | |
637 | */ | |
cbb0b734 | 638 | else if (strength_bits == -1) |
018e57c7 DSH |
639 | { |
640 | ma = mask & cp->algorithms; | |
641 | ma_s = mask_strength & cp->algo_strength; | |
642 | ||
643 | #ifdef CIPHER_DEBUG | |
644 | printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); | |
645 | printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); | |
646 | #endif | |
647 | /* | |
648 | * Select: if none of the mask bit was met from the | |
649 | * cipher or not all of the bits were met, the | |
650 | * selection does not apply. | |
651 | */ | |
652 | if (((ma == 0) && (ma_s == 0)) || | |
653 | ((ma & algorithms) != ma) || | |
654 | ((ma_s & algo_strength) != ma_s)) | |
655 | continue; /* does not apply */ | |
656 | } | |
657 | else if (strength_bits != cp->strength_bits) | |
658 | continue; /* does not apply */ | |
659 | ||
660 | #ifdef CIPHER_DEBUG | |
661 | printf("Action = %d\n", rule); | |
662 | #endif | |
663 | ||
664 | /* add the cipher if it has not been added yet. */ | |
665 | if (rule == CIPHER_ADD) | |
666 | { | |
667 | if (!curr->active) | |
668 | { | |
aa17ab7e BM |
669 | int add_this_cipher = 1; |
670 | ||
671 | if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) | |
672 | { | |
673 | /* Make sure "ECCdraft" ciphersuites are activated only if | |
674 | * *explicitly* requested, but not implicitly (such as | |
675 | * as part of the "AES" alias). */ | |
676 | ||
e6e3f38b | 677 | add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; |
aa17ab7e BM |
678 | } |
679 | ||
680 | if (add_this_cipher) | |
681 | { | |
682 | ll_append_tail(&head, curr, &tail); | |
683 | curr->active = 1; | |
684 | } | |
018e57c7 DSH |
685 | } |
686 | } | |
687 | /* Move the added cipher to this location */ | |
688 | else if (rule == CIPHER_ORD) | |
689 | { | |
690 | if (curr->active) | |
691 | { | |
692 | ll_append_tail(&head, curr, &tail); | |
693 | } | |
694 | } | |
695 | else if (rule == CIPHER_DEL) | |
696 | curr->active = 0; | |
697 | else if (rule == CIPHER_KILL) | |
698 | { | |
699 | if (head == curr) | |
700 | head = curr->next; | |
701 | else | |
702 | curr->prev->next = curr->next; | |
703 | if (tail == curr) | |
704 | tail = curr->prev; | |
705 | curr->active = 0; | |
706 | if (curr->next != NULL) | |
707 | curr->next->prev = curr->prev; | |
708 | if (curr->prev != NULL) | |
709 | curr->prev->next = curr->next; | |
710 | curr->next = NULL; | |
711 | curr->prev = NULL; | |
712 | } | |
713 | } | |
714 | ||
715 | *head_p = head; | |
716 | *tail_p = tail; | |
717 | } | |
718 | ||
3822740c RL |
719 | static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, |
720 | CIPHER_ORDER **head_p, | |
721 | CIPHER_ORDER **tail_p) | |
018e57c7 DSH |
722 | { |
723 | int max_strength_bits, i, *number_uses; | |
724 | CIPHER_ORDER *curr; | |
725 | ||
726 | /* | |
727 | * This routine sorts the ciphers with descending strength. The sorting | |
728 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
729 | * routine as '+' movement to the end of the list. | |
730 | */ | |
731 | max_strength_bits = 0; | |
732 | curr = *head_p; | |
733 | while (curr != NULL) | |
734 | { | |
735 | if (curr->active && | |
736 | (curr->cipher->strength_bits > max_strength_bits)) | |
737 | max_strength_bits = curr->cipher->strength_bits; | |
738 | curr = curr->next; | |
739 | } | |
740 | ||
26a3a48d | 741 | number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); |
018e57c7 DSH |
742 | if (!number_uses) |
743 | { | |
744 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); | |
745 | return(0); | |
746 | } | |
747 | memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); | |
748 | ||
749 | /* | |
750 | * Now find the strength_bits values actually used | |
751 | */ | |
752 | curr = *head_p; | |
753 | while (curr != NULL) | |
754 | { | |
755 | if (curr->active) | |
756 | number_uses[curr->cipher->strength_bits]++; | |
757 | curr = curr->next; | |
758 | } | |
018e57c7 DSH |
759 | /* |
760 | * Go through the list of used strength_bits values in descending | |
64287002 | 761 | * order. |
018e57c7 | 762 | */ |
018e57c7 | 763 | for (i = max_strength_bits; i >= 0; i--) |
018e57c7 | 764 | if (number_uses[i] > 0) |
879b30aa | 765 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, |
3822740c | 766 | co_list, head_p, tail_p); |
018e57c7 | 767 | |
26a3a48d | 768 | OPENSSL_free(number_uses); |
018e57c7 DSH |
769 | return(1); |
770 | } | |
771 | ||
772 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
3822740c | 773 | CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, |
018e57c7 DSH |
774 | CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) |
775 | { | |
776 | unsigned long algorithms, mask, algo_strength, mask_strength; | |
777 | const char *l, *start, *buf; | |
778 | int j, multi, found, rule, retval, ok, buflen; | |
879b30aa | 779 | unsigned long cipher_id = 0, ssl_version = 0; |
018e57c7 | 780 | char ch; |
58964a49 | 781 | |
018e57c7 DSH |
782 | retval = 1; |
783 | l = rule_str; | |
784 | for (;;) | |
785 | { | |
786 | ch = *l; | |
58964a49 | 787 | |
018e57c7 DSH |
788 | if (ch == '\0') |
789 | break; /* done */ | |
d02b48c6 | 790 | if (ch == '-') |
018e57c7 | 791 | { rule = CIPHER_DEL; l++; } |
d02b48c6 | 792 | else if (ch == '+') |
018e57c7 | 793 | { rule = CIPHER_ORD; l++; } |
d02b48c6 | 794 | else if (ch == '!') |
018e57c7 DSH |
795 | { rule = CIPHER_KILL; l++; } |
796 | else if (ch == '@') | |
797 | { rule = CIPHER_SPECIAL; l++; } | |
798 | else | |
799 | { rule = CIPHER_ADD; } | |
d02b48c6 | 800 | |
58964a49 | 801 | if (ITEM_SEP(ch)) |
d02b48c6 RE |
802 | { |
803 | l++; | |
804 | continue; | |
805 | } | |
018e57c7 DSH |
806 | |
807 | algorithms = mask = algo_strength = mask_strength = 0; | |
d02b48c6 RE |
808 | |
809 | start=l; | |
810 | for (;;) | |
811 | { | |
018e57c7 DSH |
812 | ch = *l; |
813 | buf = l; | |
814 | buflen = 0; | |
ca570cfd | 815 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
816 | while ( ((ch >= 'A') && (ch <= 'Z')) || |
817 | ((ch >= '0') && (ch <= '9')) || | |
818 | ((ch >= 'a') && (ch <= 'z')) || | |
819 | (ch == '-')) | |
ca570cfd UM |
820 | #else |
821 | while ( isalnum(ch) || (ch == '-')) | |
822 | #endif | |
d02b48c6 | 823 | { |
018e57c7 DSH |
824 | ch = *(++l); |
825 | buflen++; | |
d02b48c6 | 826 | } |
018e57c7 DSH |
827 | |
828 | if (buflen == 0) | |
829 | { | |
830 | /* | |
4013f3bf | 831 | * We hit something we cannot deal with, |
657e60fa | 832 | * it is no command or separator nor |
018e57c7 DSH |
833 | * alphanumeric, so we call this an error. |
834 | */ | |
835 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
836 | SSL_R_INVALID_COMMAND); | |
837 | retval = found = 0; | |
838 | l++; | |
839 | break; | |
840 | } | |
841 | ||
842 | if (rule == CIPHER_SPECIAL) | |
843 | { | |
4013f3bf | 844 | found = 0; /* unused -- avoid compiler warning */ |
018e57c7 DSH |
845 | break; /* special treatment */ |
846 | } | |
d02b48c6 RE |
847 | |
848 | /* check for multi-part specification */ | |
58964a49 RE |
849 | if (ch == '+') |
850 | { | |
851 | multi=1; | |
852 | l++; | |
853 | } | |
854 | else | |
855 | multi=0; | |
d02b48c6 | 856 | |
018e57c7 | 857 | /* |
4013f3bf | 858 | * Now search for the cipher alias in the ca_list. Be careful |
018e57c7 DSH |
859 | * with the strncmp, because the "buflen" limitation |
860 | * will make the rule "ADH:SOME" and the cipher | |
861 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
4013f3bf BM |
862 | * So additionally check whether the cipher name found |
863 | * has the correct length. We can save a strlen() call: | |
018e57c7 | 864 | * just checking for the '\0' at the right place is |
f65a7578 LJ |
865 | * sufficient, we have to strncmp() anyway. (We cannot |
866 | * use strcmp(), because buf is not '\0' terminated.) | |
018e57c7 DSH |
867 | */ |
868 | j = found = 0; | |
cbb0b734 | 869 | cipher_id = 0; |
879b30aa | 870 | ssl_version = 0; |
018e57c7 DSH |
871 | while (ca_list[j]) |
872 | { | |
f65a7578 LJ |
873 | if (!strncmp(buf, ca_list[j]->name, buflen) && |
874 | (ca_list[j]->name[buflen] == '\0')) | |
018e57c7 DSH |
875 | { |
876 | found = 1; | |
877 | break; | |
878 | } | |
879 | else | |
880 | j++; | |
881 | } | |
882 | if (!found) | |
883 | break; /* ignore this entry */ | |
884 | ||
cac0d4ee NL |
885 | /* New algorithms: |
886 | * 1 - any old restrictions apply outside new mask | |
887 | * 2 - any new restrictions apply outside old mask | |
888 | * 3 - enforce old & new where masks intersect | |
889 | */ | |
890 | algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ | |
891 | (ca_list[j]->algorithms & ~mask) | /* 2 */ | |
892 | (algorithms & ca_list[j]->algorithms); /* 3 */ | |
018e57c7 | 893 | mask |= ca_list[j]->mask; |
cac0d4ee NL |
894 | algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | |
895 | (ca_list[j]->algo_strength & ~mask_strength) | | |
896 | (algo_strength & ca_list[j]->algo_strength); | |
018e57c7 | 897 | mask_strength |= ca_list[j]->mask_strength; |
d02b48c6 | 898 | |
879b30aa BM |
899 | /* explicit ciphersuite found */ |
900 | if (ca_list[j]->valid) | |
901 | { | |
902 | cipher_id = ca_list[j]->id; | |
903 | ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; | |
904 | break; | |
905 | } | |
906 | ||
d02b48c6 RE |
907 | if (!multi) break; |
908 | } | |
018e57c7 | 909 | |
4013f3bf BM |
910 | /* |
911 | * Ok, we have the rule, now apply it | |
912 | */ | |
913 | if (rule == CIPHER_SPECIAL) | |
914 | { /* special command */ | |
915 | ok = 0; | |
916 | if ((buflen == 8) && | |
917 | !strncmp(buf, "STRENGTH", 8)) | |
3822740c | 918 | ok = ssl_cipher_strength_sort(co_list, |
4013f3bf BM |
919 | head_p, tail_p); |
920 | else | |
921 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
922 | SSL_R_INVALID_COMMAND); | |
923 | if (ok == 0) | |
924 | retval = 0; | |
018e57c7 | 925 | /* |
4013f3bf BM |
926 | * We do not support any "multi" options |
927 | * together with "@", so throw away the | |
928 | * rest of the command, if any left, until | |
929 | * end or ':' is found. | |
018e57c7 | 930 | */ |
5f4cc234 | 931 | while ((*l != '\0') && !ITEM_SEP(*l)) |
4013f3bf BM |
932 | l++; |
933 | } | |
934 | else if (found) | |
935 | { | |
879b30aa | 936 | ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, |
4013f3bf | 937 | algo_strength, mask_strength, rule, -1, |
3822740c | 938 | co_list, head_p, tail_p); |
4013f3bf BM |
939 | } |
940 | else | |
941 | { | |
5f4cc234 | 942 | while ((*l != '\0') && !ITEM_SEP(*l)) |
4013f3bf BM |
943 | l++; |
944 | } | |
945 | if (*l == '\0') break; /* done */ | |
d02b48c6 RE |
946 | } |
947 | ||
018e57c7 DSH |
948 | return(retval); |
949 | } | |
950 | ||
951 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, | |
952 | STACK_OF(SSL_CIPHER) **cipher_list, | |
953 | STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
954 | const char *rule_str) | |
955 | { | |
956 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; | |
957 | unsigned long disabled_mask; | |
5f4cc234 | 958 | unsigned long disabled_m256; |
cac0d4ee | 959 | STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; |
018e57c7 | 960 | const char *rule_p; |
3822740c | 961 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; |
018e57c7 DSH |
962 | SSL_CIPHER **ca_list = NULL; |
963 | ||
964 | /* | |
965 | * Return with error if nothing to do. | |
966 | */ | |
cac0d4ee NL |
967 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) |
968 | return NULL; | |
018e57c7 | 969 | |
018e57c7 DSH |
970 | /* |
971 | * To reduce the work to do we only want to process the compiled | |
972 | * in algorithms, so we first get the mask of disabled ciphers. | |
973 | */ | |
5f4cc234 BM |
974 | { |
975 | struct disabled_masks d; | |
976 | d = ssl_cipher_get_disabled(); | |
977 | disabled_mask = d.mask; | |
978 | disabled_m256 = d.m256; | |
979 | } | |
018e57c7 DSH |
980 | |
981 | /* | |
982 | * Now we have to collect the available ciphers from the compiled | |
983 | * in ciphers. We cannot get more than the number compiled in, so | |
984 | * it is used for allocation. | |
985 | */ | |
986 | num_of_ciphers = ssl_method->num_ciphers(); | |
f9b3bff6 RL |
987 | #ifdef KSSL_DEBUG |
988 | printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); | |
989 | #endif /* KSSL_DEBUG */ | |
3822740c RL |
990 | co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); |
991 | if (co_list == NULL) | |
d02b48c6 | 992 | { |
018e57c7 DSH |
993 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
994 | return(NULL); /* Failure */ | |
995 | } | |
58964a49 | 996 | |
018e57c7 | 997 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, |
5f4cc234 | 998 | disabled_m256, co_list, &head, &tail); |
018e57c7 DSH |
999 | |
1000 | /* | |
1001 | * We also need cipher aliases for selecting based on the rule_str. | |
1002 | * There might be two types of entries in the rule_str: 1) names | |
1003 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1004 | * For 1) we need the available ciphers and for 2) the cipher | |
657e60fa | 1005 | * groups of cipher_aliases added together in one list (otherwise |
018e57c7 DSH |
1006 | * we would be happy with just the cipher_aliases table). |
1007 | */ | |
1008 | num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); | |
1009 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; | |
1010 | ca_list = | |
26a3a48d | 1011 | (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); |
018e57c7 DSH |
1012 | if (ca_list == NULL) |
1013 | { | |
3822740c | 1014 | OPENSSL_free(co_list); |
018e57c7 DSH |
1015 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
1016 | return(NULL); /* Failure */ | |
1017 | } | |
5f4cc234 BM |
1018 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, |
1019 | (disabled_mask & disabled_m256), head); | |
018e57c7 DSH |
1020 | |
1021 | /* | |
1022 | * If the rule_string begins with DEFAULT, apply the default rule | |
1023 | * before using the (possibly available) additional rules. | |
1024 | */ | |
1025 | ok = 1; | |
1026 | rule_p = rule_str; | |
1027 | if (strncmp(rule_str,"DEFAULT",7) == 0) | |
1028 | { | |
1029 | ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, | |
3822740c | 1030 | co_list, &head, &tail, ca_list); |
018e57c7 DSH |
1031 | rule_p += 7; |
1032 | if (*rule_p == ':') | |
1033 | rule_p++; | |
1034 | } | |
58964a49 | 1035 | |
018e57c7 | 1036 | if (ok && (strlen(rule_p) > 0)) |
3822740c | 1037 | ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, |
018e57c7 | 1038 | ca_list); |
d02b48c6 | 1039 | |
26a3a48d | 1040 | OPENSSL_free(ca_list); /* Not needed anymore */ |
018e57c7 DSH |
1041 | |
1042 | if (!ok) | |
1043 | { /* Rule processing failure */ | |
3822740c | 1044 | OPENSSL_free(co_list); |
018e57c7 DSH |
1045 | return(NULL); |
1046 | } | |
1047 | /* | |
1048 | * Allocate new "cipherstack" for the result, return with error | |
1049 | * if we cannot get one. | |
1050 | */ | |
62324627 | 1051 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) |
018e57c7 | 1052 | { |
3822740c | 1053 | OPENSSL_free(co_list); |
018e57c7 | 1054 | return(NULL); |
d02b48c6 RE |
1055 | } |
1056 | ||
018e57c7 DSH |
1057 | /* |
1058 | * The cipher selection for the list is done. The ciphers are added | |
1059 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1060 | */ | |
1061 | for (curr = head; curr != NULL; curr = curr->next) | |
d02b48c6 | 1062 | { |
aeb9ccfa DSH |
1063 | #ifdef OPENSSL_FIPS |
1064 | if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) | |
1065 | #else | |
58964a49 | 1066 | if (curr->active) |
aeb9ccfa | 1067 | #endif |
d02b48c6 | 1068 | { |
018e57c7 | 1069 | sk_SSL_CIPHER_push(cipherstack, curr->cipher); |
d02b48c6 | 1070 | #ifdef CIPHER_DEBUG |
58964a49 | 1071 | printf("<%s>\n",curr->cipher->name); |
d02b48c6 | 1072 | #endif |
d02b48c6 RE |
1073 | } |
1074 | } | |
3822740c | 1075 | OPENSSL_free(co_list); /* Not needed any longer */ |
018e57c7 | 1076 | |
cac0d4ee NL |
1077 | tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); |
1078 | if (tmp_cipher_list == NULL) | |
018e57c7 DSH |
1079 | { |
1080 | sk_SSL_CIPHER_free(cipherstack); | |
cac0d4ee | 1081 | return NULL; |
018e57c7 | 1082 | } |
cac0d4ee NL |
1083 | if (*cipher_list != NULL) |
1084 | sk_SSL_CIPHER_free(*cipher_list); | |
1085 | *cipher_list = cipherstack; | |
1086 | if (*cipher_list_by_id != NULL) | |
1087 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1088 | *cipher_list_by_id = tmp_cipher_list; | |
086d475f | 1089 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); |
d02b48c6 | 1090 | |
018e57c7 | 1091 | return(cipherstack); |
d02b48c6 RE |
1092 | } |
1093 | ||
6b691a5c | 1094 | char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) |
d02b48c6 | 1095 | { |
b1c4fe36 | 1096 | int is_export,pkl,kl; |
f4bfd357 NL |
1097 | const char *ver,*exp_str; |
1098 | const char *kx,*au,*enc,*mac; | |
018e57c7 | 1099 | unsigned long alg,alg2,alg_s; |
f9b3bff6 | 1100 | #ifdef KSSL_DEBUG |
f4bfd357 | 1101 | static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; |
f9b3bff6 | 1102 | #else |
f4bfd357 | 1103 | static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; |
f9b3bff6 RL |
1104 | #endif /* KSSL_DEBUG */ |
1105 | ||
d02b48c6 | 1106 | alg=cipher->algorithms; |
018e57c7 | 1107 | alg_s=cipher->algo_strength; |
d02b48c6 RE |
1108 | alg2=cipher->algorithm2; |
1109 | ||
018e57c7 DSH |
1110 | is_export=SSL_C_IS_EXPORT(cipher); |
1111 | pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); | |
1112 | kl=SSL_C_EXPORT_KEYLENGTH(cipher); | |
d8ec0dcf | 1113 | exp_str=is_export?" export":""; |
ea262260 | 1114 | |
d02b48c6 RE |
1115 | if (alg & SSL_SSLV2) |
1116 | ver="SSLv2"; | |
1117 | else if (alg & SSL_SSLV3) | |
1118 | ver="SSLv3"; | |
1119 | else | |
1120 | ver="unknown"; | |
1121 | ||
1122 | switch (alg&SSL_MKEY_MASK) | |
1123 | { | |
1124 | case SSL_kRSA: | |
b1c4fe36 | 1125 | kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; |
d02b48c6 RE |
1126 | break; |
1127 | case SSL_kDHr: | |
1128 | kx="DH/RSA"; | |
1129 | break; | |
1130 | case SSL_kDHd: | |
1131 | kx="DH/DSS"; | |
1132 | break; | |
f9b3bff6 RL |
1133 | case SSL_kKRB5: /* VRS */ |
1134 | case SSL_KRB5: /* VRS */ | |
1135 | kx="KRB5"; | |
1136 | break; | |
d02b48c6 RE |
1137 | case SSL_kFZA: |
1138 | kx="Fortezza"; | |
1139 | break; | |
1140 | case SSL_kEDH: | |
b1c4fe36 | 1141 | kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; |
d02b48c6 | 1142 | break; |
ea262260 BM |
1143 | case SSL_kECDH: |
1144 | case SSL_kECDHE: | |
1145 | kx=is_export?"ECDH(<=163)":"ECDH"; | |
1146 | break; | |
d02b48c6 RE |
1147 | default: |
1148 | kx="unknown"; | |
1149 | } | |
1150 | ||
1151 | switch (alg&SSL_AUTH_MASK) | |
1152 | { | |
1153 | case SSL_aRSA: | |
1154 | au="RSA"; | |
1155 | break; | |
1156 | case SSL_aDSS: | |
1157 | au="DSS"; | |
1158 | break; | |
1159 | case SSL_aDH: | |
1160 | au="DH"; | |
1161 | break; | |
f9b3bff6 RL |
1162 | case SSL_aKRB5: /* VRS */ |
1163 | case SSL_KRB5: /* VRS */ | |
1164 | au="KRB5"; | |
1165 | break; | |
d02b48c6 RE |
1166 | case SSL_aFZA: |
1167 | case SSL_aNULL: | |
1168 | au="None"; | |
1169 | break; | |
ea262260 BM |
1170 | case SSL_aECDSA: |
1171 | au="ECDSA"; | |
1172 | break; | |
d02b48c6 RE |
1173 | default: |
1174 | au="unknown"; | |
1175 | break; | |
1176 | } | |
1177 | ||
1178 | switch (alg&SSL_ENC_MASK) | |
1179 | { | |
1180 | case SSL_DES: | |
b1c4fe36 | 1181 | enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; |
d02b48c6 RE |
1182 | break; |
1183 | case SSL_3DES: | |
1184 | enc="3DES(168)"; | |
1185 | break; | |
1186 | case SSL_RC4: | |
b1c4fe36 | 1187 | enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") |
06ab81f9 | 1188 | :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); |
d02b48c6 RE |
1189 | break; |
1190 | case SSL_RC2: | |
b1c4fe36 | 1191 | enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; |
d02b48c6 RE |
1192 | break; |
1193 | case SSL_IDEA: | |
1194 | enc="IDEA(128)"; | |
1195 | break; | |
1196 | case SSL_eFZA: | |
1197 | enc="Fortezza"; | |
1198 | break; | |
1199 | case SSL_eNULL: | |
1200 | enc="None"; | |
1201 | break; | |
deb2c1a1 DSH |
1202 | case SSL_AES: |
1203 | switch(cipher->strength_bits) | |
259810e0 | 1204 | { |
ea4f109c BM |
1205 | case 128: enc="AES(128)"; break; |
1206 | case 192: enc="AES(192)"; break; | |
1207 | case 256: enc="AES(256)"; break; | |
1208 | default: enc="AES(?""?""?)"; break; | |
259810e0 BL |
1209 | } |
1210 | break; | |
e18eef3d BM |
1211 | case SSL_CAMELLIA: |
1212 | switch(cipher->strength_bits) | |
1213 | { | |
1214 | case 128: enc="Camellia(128)"; break; | |
1215 | case 256: enc="Camellia(256)"; break; | |
1216 | default: enc="Camellia(?""?""?)"; break; | |
1217 | } | |
1218 | break; | |
1139eeec DSH |
1219 | case SSL_SEED: |
1220 | enc="SEED(128)"; | |
1221 | break; | |
1222 | ||
d02b48c6 RE |
1223 | default: |
1224 | enc="unknown"; | |
1225 | break; | |
1226 | } | |
1227 | ||
1228 | switch (alg&SSL_MAC_MASK) | |
1229 | { | |
1230 | case SSL_MD5: | |
1231 | mac="MD5"; | |
1232 | break; | |
d02b48c6 RE |
1233 | case SSL_SHA1: |
1234 | mac="SHA1"; | |
1235 | break; | |
1236 | default: | |
1237 | mac="unknown"; | |
1238 | break; | |
1239 | } | |
1240 | ||
1241 | if (buf == NULL) | |
1242 | { | |
063c0502 | 1243 | len=128; |
26a3a48d RL |
1244 | buf=OPENSSL_malloc(len); |
1245 | if (buf == NULL) return("OPENSSL_malloc Error"); | |
d02b48c6 RE |
1246 | } |
1247 | else if (len < 128) | |
1248 | return("Buffer too small"); | |
1249 | ||
f9b3bff6 | 1250 | #ifdef KSSL_DEBUG |
d8ec0dcf | 1251 | BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); |
f9b3bff6 | 1252 | #else |
d8ec0dcf | 1253 | BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); |
f9b3bff6 | 1254 | #endif /* KSSL_DEBUG */ |
d02b48c6 RE |
1255 | return(buf); |
1256 | } | |
1257 | ||
0821bcd4 | 1258 | char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
d02b48c6 RE |
1259 | { |
1260 | int i; | |
1261 | ||
58964a49 | 1262 | if (c == NULL) return("(NONE)"); |
d02b48c6 RE |
1263 | i=(int)(c->id>>24L); |
1264 | if (i == 3) | |
58964a49 | 1265 | return("TLSv1/SSLv3"); |
d02b48c6 RE |
1266 | else if (i == 2) |
1267 | return("SSLv2"); | |
1268 | else | |
1269 | return("unknown"); | |
1270 | } | |
1271 | ||
1272 | /* return the actual cipher being used */ | |
0821bcd4 | 1273 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
d02b48c6 RE |
1274 | { |
1275 | if (c != NULL) | |
1276 | return(c->name); | |
1277 | return("(NONE)"); | |
1278 | } | |
1279 | ||
657e60fa | 1280 | /* number of bits for symmetric cipher */ |
0821bcd4 | 1281 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
d02b48c6 | 1282 | { |
018e57c7 | 1283 | int ret=0; |
d02b48c6 RE |
1284 | |
1285 | if (c != NULL) | |
1286 | { | |
018e57c7 DSH |
1287 | if (alg_bits != NULL) *alg_bits = c->alg_bits; |
1288 | ret = c->strength_bits; | |
d02b48c6 | 1289 | } |
d02b48c6 RE |
1290 | return(ret); |
1291 | } | |
1292 | ||
6b691a5c | 1293 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
413c4f45 MC |
1294 | { |
1295 | SSL_COMP *ctmp; | |
1296 | int i,nn; | |
1297 | ||
1298 | if ((n == 0) || (sk == NULL)) return(NULL); | |
f73e07cf | 1299 | nn=sk_SSL_COMP_num(sk); |
413c4f45 MC |
1300 | for (i=0; i<nn; i++) |
1301 | { | |
f73e07cf | 1302 | ctmp=sk_SSL_COMP_value(sk,i); |
413c4f45 MC |
1303 | if (ctmp->id == n) |
1304 | return(ctmp); | |
1305 | } | |
1306 | return(NULL); | |
1307 | } | |
1308 | ||
54f51116 DSH |
1309 | #ifdef OPENSSL_NO_COMP |
1310 | void *SSL_COMP_get_compression_methods(void) | |
1311 | { | |
1312 | return NULL; | |
1313 | } | |
1314 | int SSL_COMP_add_compression_method(int id, void *cm) | |
1315 | { | |
1316 | return 1; | |
1317 | } | |
1318 | ||
1319 | const char *SSL_COMP_get_name(const void *comp) | |
1320 | { | |
1321 | return NULL; | |
1322 | } | |
1323 | #else | |
6b691a5c | 1324 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
413c4f45 | 1325 | { |
7ba666fa | 1326 | load_builtin_compressions(); |
413c4f45 MC |
1327 | return(ssl_comp_methods); |
1328 | } | |
1329 | ||
6b691a5c | 1330 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
413c4f45 MC |
1331 | { |
1332 | SSL_COMP *comp; | |
413c4f45 | 1333 | |
9f495243 RL |
1334 | if (cm == NULL || cm->type == NID_undef) |
1335 | return 1; | |
1336 | ||
7ba666fa RL |
1337 | /* According to draft-ietf-tls-compression-04.txt, the |
1338 | compression number ranges should be the following: | |
1339 | ||
1340 | 0 to 63: methods defined by the IETF | |
1341 | 64 to 192: external party methods assigned by IANA | |
1342 | 193 to 255: reserved for private use */ | |
1343 | if (id < 193 || id > 255) | |
1344 | { | |
1345 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
1346 | return 0; | |
1347 | } | |
1348 | ||
058123af | 1349 | MemCheck_off(); |
26a3a48d | 1350 | comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); |
413c4f45 MC |
1351 | comp->id=id; |
1352 | comp->method=cm; | |
7ba666fa | 1353 | load_builtin_compressions(); |
82423549 RL |
1354 | if (ssl_comp_methods |
1355 | && !sk_SSL_COMP_find(ssl_comp_methods,comp)) | |
1356 | { | |
1357 | OPENSSL_free(comp); | |
1358 | MemCheck_on(); | |
1359 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); | |
1360 | return(1); | |
1361 | } | |
1362 | else if ((ssl_comp_methods == NULL) | |
7ba666fa | 1363 | || !sk_SSL_COMP_push(ssl_comp_methods,comp)) |
413c4f45 | 1364 | { |
7ba666fa | 1365 | OPENSSL_free(comp); |
058123af | 1366 | MemCheck_on(); |
413c4f45 | 1367 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); |
f6e8c19e | 1368 | return(1); |
413c4f45 MC |
1369 | } |
1370 | else | |
058123af RL |
1371 | { |
1372 | MemCheck_on(); | |
f6e8c19e | 1373 | return(0); |
058123af | 1374 | } |
413c4f45 | 1375 | } |
377dcdba RL |
1376 | |
1377 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
1378 | { | |
1379 | if (comp) | |
1380 | return comp->name; | |
1381 | return NULL; | |
1382 | } | |
1383 | ||
54f51116 | 1384 | #endif |