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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 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "objects.h" | |
61 | #include "ssl_locl.h" | |
62 | ||
63 | #define SSL_ENC_DES_IDX 0 | |
64 | #define SSL_ENC_3DES_IDX 1 | |
65 | #define SSL_ENC_RC4_IDX 2 | |
66 | #define SSL_ENC_RC2_IDX 3 | |
67 | #define SSL_ENC_IDEA_IDX 4 | |
68 | #define SSL_ENC_eFZA_IDX 5 | |
69 | #define SSL_ENC_NULL_IDX 6 | |
70 | #define SSL_ENC_NUM_IDX 7 | |
71 | ||
72 | static EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ | |
73 | NULL,NULL,NULL,NULL,NULL,NULL, | |
74 | }; | |
75 | ||
76 | #define SSL_MD_MD5_IDX 0 | |
58964a49 RE |
77 | #define SSL_MD_SHA1_IDX 1 |
78 | #define SSL_MD_NUM_IDX 2 | |
d02b48c6 | 79 | static EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ |
58964a49 | 80 | NULL,NULL, |
d02b48c6 RE |
81 | }; |
82 | ||
83 | typedef struct cipher_sort_st | |
84 | { | |
85 | SSL_CIPHER *cipher; | |
86 | int pref; | |
87 | } CIPHER_SORT; | |
88 | ||
89 | #define CIPHER_ADD 1 | |
90 | #define CIPHER_KILL 2 | |
91 | #define CIPHER_DEL 3 | |
58964a49 | 92 | #define CIPHER_ORD 4 |
d02b48c6 RE |
93 | |
94 | typedef struct cipher_choice_st | |
95 | { | |
96 | int type; | |
97 | unsigned long algorithms; | |
98 | unsigned long mask; | |
58964a49 | 99 | long top; |
d02b48c6 RE |
100 | } CIPHER_CHOICE; |
101 | ||
58964a49 RE |
102 | typedef struct cipher_order_st |
103 | { | |
104 | SSL_CIPHER *cipher; | |
105 | int active; | |
106 | int dead; | |
107 | struct cipher_order_st *next,*prev; | |
108 | } CIPHER_ORDER; | |
109 | ||
d02b48c6 RE |
110 | static SSL_CIPHER cipher_aliases[]={ |
111 | {0,SSL_TXT_ALL, 0,SSL_ALL, 0,SSL_ALL}, /* must be first */ | |
112 | {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,SSL_MKEY_MASK}, | |
113 | {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,SSL_MKEY_MASK}, | |
114 | {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,SSL_MKEY_MASK}, | |
115 | {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,SSL_MKEY_MASK}, | |
116 | {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,SSL_MKEY_MASK}, | |
117 | {0,SSL_TXT_DH, 0,SSL_DH, 0,SSL_MKEY_MASK}, | |
118 | {0,SSL_TXT_EDH, 0,SSL_EDH, 0,SSL_MKEY_MASK|SSL_AUTH_MASK}, | |
119 | ||
120 | {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,SSL_AUTH_MASK}, | |
121 | {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,SSL_AUTH_MASK}, | |
122 | {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,SSL_AUTH_MASK}, | |
123 | {0,SSL_TXT_aNULL,0,SSL_aNULL,0,SSL_AUTH_MASK}, | |
124 | {0,SSL_TXT_aDH, 0,SSL_aDH, 0,SSL_AUTH_MASK}, | |
125 | {0,SSL_TXT_DSS, 0,SSL_DSS, 0,SSL_AUTH_MASK}, | |
126 | ||
127 | {0,SSL_TXT_DES, 0,SSL_DES, 0,SSL_ENC_MASK}, | |
128 | {0,SSL_TXT_3DES,0,SSL_3DES, 0,SSL_ENC_MASK}, | |
129 | {0,SSL_TXT_RC4, 0,SSL_RC4, 0,SSL_ENC_MASK}, | |
130 | {0,SSL_TXT_RC2, 0,SSL_RC2, 0,SSL_ENC_MASK}, | |
131 | {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,SSL_ENC_MASK}, | |
132 | {0,SSL_TXT_eNULL,0,SSL_eNULL,0,SSL_ENC_MASK}, | |
133 | {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,SSL_ENC_MASK}, | |
134 | ||
135 | {0,SSL_TXT_MD5, 0,SSL_MD5, 0,SSL_MAC_MASK}, | |
d02b48c6 RE |
136 | {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,SSL_MAC_MASK}, |
137 | {0,SSL_TXT_SHA, 0,SSL_SHA, 0,SSL_MAC_MASK}, | |
138 | ||
139 | {0,SSL_TXT_NULL,0,SSL_NULL, 0,SSL_ENC_MASK}, | |
140 | {0,SSL_TXT_RSA, 0,SSL_RSA, 0,SSL_AUTH_MASK|SSL_MKEY_MASK}, | |
141 | {0,SSL_TXT_ADH, 0,SSL_ADH, 0,SSL_AUTH_MASK|SSL_MKEY_MASK}, | |
142 | {0,SSL_TXT_FZA, 0,SSL_FZA, 0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK}, | |
143 | ||
144 | {0,SSL_TXT_EXP, 0,SSL_EXP, 0,SSL_EXP_MASK}, | |
145 | {0,SSL_TXT_EXPORT,0,SSL_EXPORT,0,SSL_EXP_MASK}, | |
146 | {0,SSL_TXT_SSLV2,0,SSL_SSLV2,0,SSL_SSL_MASK}, | |
147 | {0,SSL_TXT_SSLV3,0,SSL_SSLV3,0,SSL_SSL_MASK}, | |
148 | {0,SSL_TXT_LOW, 0,SSL_LOW,0,SSL_STRONG_MASK}, | |
149 | {0,SSL_TXT_MEDIUM,0,SSL_MEDIUM,0,SSL_STRONG_MASK}, | |
150 | {0,SSL_TXT_HIGH, 0,SSL_HIGH,0,SSL_STRONG_MASK}, | |
151 | }; | |
152 | ||
153 | static int init_ciphers=1; | |
154 | static void load_ciphers(); | |
155 | ||
156 | static int cmp_by_name(a,b) | |
157 | SSL_CIPHER **a,**b; | |
158 | { | |
159 | return(strcmp((*a)->name,(*b)->name)); | |
160 | } | |
161 | ||
162 | static void load_ciphers() | |
163 | { | |
164 | init_ciphers=0; | |
165 | ssl_cipher_methods[SSL_ENC_DES_IDX]= | |
166 | EVP_get_cipherbyname(SN_des_cbc); | |
167 | ssl_cipher_methods[SSL_ENC_3DES_IDX]= | |
168 | EVP_get_cipherbyname(SN_des_ede3_cbc); | |
169 | ssl_cipher_methods[SSL_ENC_RC4_IDX]= | |
170 | EVP_get_cipherbyname(SN_rc4); | |
171 | ssl_cipher_methods[SSL_ENC_RC2_IDX]= | |
172 | EVP_get_cipherbyname(SN_rc2_cbc); | |
173 | ssl_cipher_methods[SSL_ENC_IDEA_IDX]= | |
174 | EVP_get_cipherbyname(SN_idea_cbc); | |
175 | ||
176 | ssl_digest_methods[SSL_MD_MD5_IDX]= | |
177 | EVP_get_digestbyname(SN_md5); | |
d02b48c6 RE |
178 | ssl_digest_methods[SSL_MD_SHA1_IDX]= |
179 | EVP_get_digestbyname(SN_sha1); | |
180 | } | |
181 | ||
182 | int ssl_cipher_get_evp(c,enc,md) | |
183 | SSL_CIPHER *c; | |
184 | EVP_CIPHER **enc; | |
185 | EVP_MD **md; | |
186 | { | |
187 | int i; | |
188 | ||
189 | if (c == NULL) return(0); | |
190 | ||
191 | switch (c->algorithms & SSL_ENC_MASK) | |
192 | { | |
193 | case SSL_DES: | |
194 | i=SSL_ENC_DES_IDX; | |
195 | break; | |
196 | case SSL_3DES: | |
197 | i=SSL_ENC_3DES_IDX; | |
198 | break; | |
199 | case SSL_RC4: | |
200 | i=SSL_ENC_RC4_IDX; | |
201 | break; | |
202 | case SSL_RC2: | |
203 | i=SSL_ENC_RC2_IDX; | |
204 | break; | |
205 | case SSL_IDEA: | |
206 | i=SSL_ENC_IDEA_IDX; | |
207 | break; | |
208 | case SSL_eNULL: | |
209 | i=SSL_ENC_NULL_IDX; | |
210 | break; | |
211 | break; | |
212 | default: | |
213 | i= -1; | |
214 | break; | |
215 | } | |
216 | ||
217 | if ((i < 0) || (i > SSL_ENC_NUM_IDX)) | |
218 | *enc=NULL; | |
219 | else | |
220 | { | |
221 | if (i == SSL_ENC_NULL_IDX) | |
222 | *enc=EVP_enc_null(); | |
223 | else | |
224 | *enc=ssl_cipher_methods[i]; | |
225 | } | |
226 | ||
227 | switch (c->algorithms & SSL_MAC_MASK) | |
228 | { | |
229 | case SSL_MD5: | |
230 | i=SSL_MD_MD5_IDX; | |
231 | break; | |
d02b48c6 RE |
232 | case SSL_SHA1: |
233 | i=SSL_MD_SHA1_IDX; | |
234 | break; | |
235 | default: | |
236 | i= -1; | |
237 | break; | |
238 | } | |
239 | if ((i < 0) || (i > SSL_MD_NUM_IDX)) | |
240 | *md=NULL; | |
241 | else | |
242 | *md=ssl_digest_methods[i]; | |
243 | ||
244 | if ((*enc != NULL) && (*md != NULL)) | |
245 | return(1); | |
246 | else | |
247 | return(0); | |
248 | } | |
249 | ||
58964a49 RE |
250 | #define ITEM_SEP(a) \ |
251 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) | |
252 | ||
253 | static void ll_append_tail(head,curr,tail) | |
254 | CIPHER_ORDER **head,*curr,**tail; | |
255 | { | |
256 | if (curr == *tail) return; | |
257 | if (curr == *head) | |
258 | *head=curr->next; | |
259 | if (curr->prev != NULL) | |
260 | curr->prev->next=curr->next; | |
261 | if (curr->next != NULL) /* should always be true */ | |
262 | curr->next->prev=curr->prev; | |
263 | (*tail)->next=curr; | |
264 | curr->prev= *tail; | |
265 | curr->next=NULL; | |
266 | *tail=curr; | |
267 | } | |
268 | ||
d02b48c6 RE |
269 | STACK *ssl_create_cipher_list(ssl_method,cipher_list,cipher_list_by_id,str) |
270 | SSL_METHOD *ssl_method; | |
271 | STACK **cipher_list,**cipher_list_by_id; | |
272 | char *str; | |
273 | { | |
274 | SSL_CIPHER *c; | |
275 | char *l; | |
276 | STACK *ret=NULL,*ok=NULL; | |
277 | #define CL_BUF 40 | |
278 | char buf[CL_BUF]; | |
279 | char *tmp_str=NULL; | |
280 | unsigned long mask,algorithms,ma; | |
281 | char *start; | |
282 | int i,j,k,num=0,ch,multi; | |
283 | unsigned long al; | |
284 | STACK *ca_list=NULL; | |
58964a49 | 285 | int current_x,num_x; |
d02b48c6 | 286 | CIPHER_CHOICE *ops=NULL; |
58964a49 RE |
287 | CIPHER_ORDER *list=NULL,*head=NULL,*tail=NULL,*curr,*tail2,*curr2; |
288 | int list_num; | |
289 | int type; | |
d02b48c6 RE |
290 | SSL_CIPHER c_tmp,*cp; |
291 | ||
292 | if (str == NULL) return(NULL); | |
293 | ||
294 | if (strncmp(str,"DEFAULT",7) == 0) | |
295 | { | |
296 | i=strlen(str)+2+strlen(SSL_DEFAULT_CIPHER_LIST); | |
297 | if ((tmp_str=Malloc(i)) == NULL) | |
298 | { | |
299 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); | |
300 | goto err; | |
301 | } | |
302 | strcpy(tmp_str,SSL_DEFAULT_CIPHER_LIST); | |
58964a49 | 303 | strcat(tmp_str,":"); |
d02b48c6 RE |
304 | strcat(tmp_str,&(str[7])); |
305 | str=tmp_str; | |
306 | } | |
307 | if (init_ciphers) load_ciphers(); | |
308 | ||
309 | num=ssl_method->num_ciphers(); | |
310 | ||
311 | if ((ret=(STACK *)sk_new(NULL)) == NULL) goto err; | |
d02b48c6 RE |
312 | if ((ca_list=(STACK *)sk_new(cmp_by_name)) == NULL) goto err; |
313 | ||
314 | mask =SSL_kFZA; | |
315 | #ifdef NO_RSA | |
316 | mask|=SSL_aRSA|SSL_kRSA; | |
317 | #endif | |
318 | #ifdef NO_DSA | |
319 | mask|=SSL_aDSS; | |
320 | #endif | |
321 | #ifdef NO_DH | |
322 | mask|=SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; | |
323 | #endif | |
324 | ||
325 | #ifndef SSL_ALLOW_ENULL | |
326 | mask|=SSL_eNULL; | |
327 | #endif | |
328 | ||
329 | mask|=(ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL)?SSL_DES :0; | |
330 | mask|=(ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL)?SSL_3DES:0; | |
331 | mask|=(ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL)?SSL_RC4 :0; | |
332 | mask|=(ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL)?SSL_RC2 :0; | |
333 | mask|=(ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL)?SSL_IDEA:0; | |
334 | mask|=(ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL)?SSL_eFZA:0; | |
335 | ||
336 | mask|=(ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL)?SSL_MD5 :0; | |
d02b48c6 RE |
337 | mask|=(ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL)?SSL_SHA1:0; |
338 | ||
58964a49 RE |
339 | if ((list=(CIPHER_ORDER *)Malloc(sizeof(CIPHER_ORDER)*num)) == NULL) |
340 | goto err; | |
341 | ||
d02b48c6 | 342 | /* Get the initial list of ciphers */ |
58964a49 | 343 | list_num=0; |
d02b48c6 RE |
344 | for (i=0; i<num; i++) |
345 | { | |
346 | c=ssl_method->get_cipher((unsigned int)i); | |
347 | /* drop those that use any of that is not available */ | |
348 | if ((c != NULL) && c->valid && !(c->algorithms & mask)) | |
349 | { | |
58964a49 RE |
350 | list[list_num].cipher=c; |
351 | list[list_num].next=NULL; | |
352 | list[list_num].prev=NULL; | |
353 | list[list_num].active=0; | |
354 | list_num++; | |
d02b48c6 RE |
355 | if (!sk_push(ca_list,(char *)c)) goto err; |
356 | } | |
357 | } | |
58964a49 RE |
358 | |
359 | for (i=1; i<list_num-1; i++) | |
360 | { | |
361 | list[i].prev= &(list[i-1]); | |
362 | list[i].next= &(list[i+1]); | |
363 | } | |
364 | if (list_num > 0) | |
365 | { | |
366 | head= &(list[0]); | |
367 | head->prev=NULL; | |
368 | head->next= &(list[1]); | |
369 | tail= &(list[list_num-1]); | |
370 | tail->prev= &(list[list_num-2]); | |
371 | tail->next=NULL; | |
372 | } | |
d02b48c6 RE |
373 | |
374 | /* special case */ | |
375 | cipher_aliases[0].algorithms= ~mask; | |
376 | ||
377 | /* get the aliases */ | |
378 | k=sizeof(cipher_aliases)/sizeof(SSL_CIPHER); | |
379 | for (j=0; j<k; j++) | |
380 | { | |
381 | al=cipher_aliases[j].algorithms; | |
382 | /* Drop those that are not relevent */ | |
383 | if ((al & mask) == al) continue; | |
384 | if (!sk_push(ca_list,(char *)&(cipher_aliases[j]))) goto err; | |
385 | } | |
386 | ||
387 | /* ca_list now holds a 'stack' of SSL_CIPHERS, some real, some | |
388 | * 'aliases' */ | |
389 | ||
390 | /* how many parameters are there? */ | |
391 | num=1; | |
392 | for (l=str; *l; l++) | |
58964a49 RE |
393 | if (ITEM_SEP(*l)) |
394 | num++; | |
d02b48c6 RE |
395 | ops=(CIPHER_CHOICE *)Malloc(sizeof(CIPHER_CHOICE)*num); |
396 | if (ops == NULL) goto err; | |
397 | memset(ops,0,sizeof(CIPHER_CHOICE)*num); | |
d02b48c6 RE |
398 | |
399 | /* we now parse the input string and create our operations */ | |
400 | l=str; | |
401 | i=0; | |
402 | current_x=0; | |
403 | ||
404 | for (;;) | |
405 | { | |
406 | ch= *l; | |
58964a49 RE |
407 | |
408 | if (ch == '\0') break; | |
409 | ||
d02b48c6 RE |
410 | if (ch == '-') |
411 | { j=CIPHER_DEL; l++; } | |
412 | else if (ch == '+') | |
58964a49 | 413 | { j=CIPHER_ORD; l++; } |
d02b48c6 RE |
414 | else if (ch == '!') |
415 | { j=CIPHER_KILL; l++; } | |
416 | else | |
417 | { j=CIPHER_ADD; } | |
418 | ||
58964a49 | 419 | if (ITEM_SEP(ch)) |
d02b48c6 RE |
420 | { |
421 | l++; | |
422 | continue; | |
423 | } | |
424 | ops[current_x].type=j; | |
425 | ops[current_x].algorithms=0; | |
426 | ops[current_x].mask=0; | |
427 | ||
428 | start=l; | |
429 | for (;;) | |
430 | { | |
431 | ch= *l; | |
432 | i=0; | |
433 | while ( ((ch >= 'A') && (ch <= 'Z')) || | |
434 | ((ch >= '0') && (ch <= '9')) || | |
435 | ((ch >= 'a') && (ch <= 'z')) || | |
436 | (ch == '-')) | |
437 | { | |
438 | buf[i]=ch; | |
439 | ch= *(++l); | |
440 | i++; | |
441 | if (i >= (CL_BUF-2)) break; | |
442 | } | |
443 | buf[i]='\0'; | |
d02b48c6 RE |
444 | |
445 | /* check for multi-part specification */ | |
58964a49 RE |
446 | if (ch == '+') |
447 | { | |
448 | multi=1; | |
449 | l++; | |
450 | } | |
451 | else | |
452 | multi=0; | |
d02b48c6 RE |
453 | |
454 | c_tmp.name=buf; | |
455 | j=sk_find(ca_list,(char *)&c_tmp); | |
456 | if (j < 0) | |
58964a49 | 457 | goto end_loop; |
d02b48c6 RE |
458 | |
459 | cp=(SSL_CIPHER *)sk_value(ca_list,j); | |
460 | ops[current_x].algorithms|=cp->algorithms; | |
461 | /* We add the SSL_SSL_MASK so we can match the | |
462 | * SSLv2 and SSLv3 versions of RC4-MD5 */ | |
463 | ops[current_x].mask|=cp->mask; | |
464 | if (!multi) break; | |
465 | } | |
466 | current_x++; | |
467 | if (ch == '\0') break; | |
58964a49 RE |
468 | end_loop: |
469 | /* Make sure we scan until the next valid start point */ | |
470 | while ((*l != '\0') && ITEM_SEP(*l)) | |
471 | l++; | |
d02b48c6 RE |
472 | } |
473 | ||
474 | num_x=current_x; | |
475 | current_x=0; | |
476 | ||
58964a49 RE |
477 | /* We will now process the list of ciphers, once for each category, to |
478 | * decide what we should do with it. */ | |
479 | for (j=0; j<num_x; j++) | |
d02b48c6 | 480 | { |
58964a49 RE |
481 | algorithms=ops[j].algorithms; |
482 | type=ops[j].type; | |
483 | mask=ops[j].mask; | |
484 | ||
485 | curr=head; | |
486 | curr2=head; | |
487 | tail2=tail; | |
488 | for (;;) | |
d02b48c6 | 489 | { |
58964a49 RE |
490 | if ((curr == NULL) || (curr == tail2)) break; |
491 | curr=curr2; | |
492 | curr2=curr->next; | |
493 | ||
494 | cp=curr->cipher; | |
495 | ma=mask & cp->algorithms; | |
d02b48c6 RE |
496 | if ((ma == 0) || ((ma & algorithms) != ma)) |
497 | { | |
58964a49 | 498 | /* does not apply */ |
d02b48c6 RE |
499 | continue; |
500 | } | |
d02b48c6 RE |
501 | |
502 | /* add the cipher if it has not been added yet. */ | |
58964a49 | 503 | if (type == CIPHER_ADD) |
d02b48c6 | 504 | { |
58964a49 | 505 | if (!curr->active) |
d02b48c6 | 506 | { |
58964a49 RE |
507 | ll_append_tail(&head,curr,&tail); |
508 | curr->active=1; | |
d02b48c6 RE |
509 | } |
510 | } | |
511 | /* Move the added cipher to this location */ | |
58964a49 | 512 | else if (type == CIPHER_ORD) |
d02b48c6 | 513 | { |
58964a49 | 514 | if (curr->active) |
d02b48c6 | 515 | { |
58964a49 | 516 | ll_append_tail(&head,curr,&tail); |
d02b48c6 RE |
517 | } |
518 | } | |
58964a49 RE |
519 | else if (type == CIPHER_DEL) |
520 | curr->active=0; | |
521 | if (type == CIPHER_KILL) | |
d02b48c6 | 522 | { |
58964a49 RE |
523 | if (head == curr) |
524 | head=curr->next; | |
525 | else | |
526 | curr->prev->next=curr->next; | |
527 | if (tail == curr) | |
528 | tail=curr->prev; | |
529 | curr->active=0; | |
530 | if (curr->next != NULL) | |
531 | curr->next->prev=curr->prev; | |
532 | if (curr->prev != NULL) | |
533 | curr->prev->next=curr->next; | |
534 | curr->next=NULL; | |
535 | curr->prev=NULL; | |
d02b48c6 RE |
536 | } |
537 | } | |
538 | } | |
539 | ||
58964a49 | 540 | for (curr=head; curr != NULL; curr=curr->next) |
d02b48c6 | 541 | { |
58964a49 | 542 | if (curr->active) |
d02b48c6 | 543 | { |
58964a49 | 544 | sk_push(ret,(char *)curr->cipher); |
d02b48c6 | 545 | #ifdef CIPHER_DEBUG |
58964a49 | 546 | printf("<%s>\n",curr->cipher->name); |
d02b48c6 | 547 | #endif |
d02b48c6 RE |
548 | } |
549 | } | |
550 | ||
551 | if (cipher_list != NULL) | |
552 | { | |
553 | if (*cipher_list != NULL) | |
554 | sk_free(*cipher_list); | |
555 | *cipher_list=ret; | |
556 | } | |
557 | ||
558 | if (cipher_list_by_id != NULL) | |
559 | { | |
560 | if (*cipher_list_by_id != NULL) | |
561 | sk_free(*cipher_list_by_id); | |
562 | *cipher_list_by_id=sk_dup(ret); | |
563 | } | |
564 | ||
565 | if ( (cipher_list_by_id == NULL) || | |
566 | (*cipher_list_by_id == NULL) || | |
567 | (cipher_list == NULL) || | |
568 | (*cipher_list == NULL)) | |
569 | goto err; | |
570 | sk_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); | |
571 | ||
572 | ok=ret; | |
573 | ret=NULL; | |
574 | err: | |
575 | if (tmp_str) Free(tmp_str); | |
58964a49 | 576 | if (ops != NULL) Free(ops); |
d02b48c6 | 577 | if (ret != NULL) sk_free(ret); |
d02b48c6 | 578 | if (ca_list != NULL) sk_free(ca_list); |
58964a49 | 579 | if (list != NULL) Free(list); |
d02b48c6 RE |
580 | return(ok); |
581 | } | |
582 | ||
583 | char *SSL_CIPHER_description(cipher,buf,len) | |
584 | SSL_CIPHER *cipher; | |
585 | char *buf; | |
586 | int len; | |
587 | { | |
588 | int export; | |
589 | char *ver,*exp; | |
590 | char *kx,*au,*enc,*mac; | |
591 | unsigned long alg,alg2; | |
592 | static char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; | |
593 | ||
594 | alg=cipher->algorithms; | |
595 | alg2=cipher->algorithm2; | |
596 | ||
597 | export=(alg&SSL_EXP)?1:0; | |
598 | exp=(export)?" export":""; | |
599 | ||
600 | if (alg & SSL_SSLV2) | |
601 | ver="SSLv2"; | |
602 | else if (alg & SSL_SSLV3) | |
603 | ver="SSLv3"; | |
604 | else | |
605 | ver="unknown"; | |
606 | ||
607 | switch (alg&SSL_MKEY_MASK) | |
608 | { | |
609 | case SSL_kRSA: | |
610 | kx=(export)?"RSA(512)":"RSA"; | |
611 | break; | |
612 | case SSL_kDHr: | |
613 | kx="DH/RSA"; | |
614 | break; | |
615 | case SSL_kDHd: | |
616 | kx="DH/DSS"; | |
617 | break; | |
618 | case SSL_kFZA: | |
619 | kx="Fortezza"; | |
620 | break; | |
621 | case SSL_kEDH: | |
622 | kx=(export)?"DH(512)":"DH"; | |
623 | break; | |
624 | default: | |
625 | kx="unknown"; | |
626 | } | |
627 | ||
628 | switch (alg&SSL_AUTH_MASK) | |
629 | { | |
630 | case SSL_aRSA: | |
631 | au="RSA"; | |
632 | break; | |
633 | case SSL_aDSS: | |
634 | au="DSS"; | |
635 | break; | |
636 | case SSL_aDH: | |
637 | au="DH"; | |
638 | break; | |
639 | case SSL_aFZA: | |
640 | case SSL_aNULL: | |
641 | au="None"; | |
642 | break; | |
643 | default: | |
644 | au="unknown"; | |
645 | break; | |
646 | } | |
647 | ||
648 | switch (alg&SSL_ENC_MASK) | |
649 | { | |
650 | case SSL_DES: | |
651 | enc=export?"DES(40)":"DES(56)"; | |
652 | break; | |
653 | case SSL_3DES: | |
654 | enc="3DES(168)"; | |
655 | break; | |
656 | case SSL_RC4: | |
657 | enc=export?"RC4(40)":((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); | |
658 | break; | |
659 | case SSL_RC2: | |
660 | enc=export?"RC2(40)":"RC2(128)"; | |
661 | break; | |
662 | case SSL_IDEA: | |
663 | enc="IDEA(128)"; | |
664 | break; | |
665 | case SSL_eFZA: | |
666 | enc="Fortezza"; | |
667 | break; | |
668 | case SSL_eNULL: | |
669 | enc="None"; | |
670 | break; | |
671 | default: | |
672 | enc="unknown"; | |
673 | break; | |
674 | } | |
675 | ||
676 | switch (alg&SSL_MAC_MASK) | |
677 | { | |
678 | case SSL_MD5: | |
679 | mac="MD5"; | |
680 | break; | |
d02b48c6 RE |
681 | case SSL_SHA1: |
682 | mac="SHA1"; | |
683 | break; | |
684 | default: | |
685 | mac="unknown"; | |
686 | break; | |
687 | } | |
688 | ||
689 | if (buf == NULL) | |
690 | { | |
691 | buf=Malloc(128); | |
692 | if (buf == NULL) return("Malloc Error"); | |
693 | } | |
694 | else if (len < 128) | |
695 | return("Buffer too small"); | |
696 | ||
697 | sprintf(buf,format,cipher->name,ver,kx,au,enc,mac,exp); | |
698 | return(buf); | |
699 | } | |
700 | ||
701 | char *SSL_CIPHER_get_version(c) | |
702 | SSL_CIPHER *c; | |
703 | { | |
704 | int i; | |
705 | ||
58964a49 | 706 | if (c == NULL) return("(NONE)"); |
d02b48c6 RE |
707 | i=(int)(c->id>>24L); |
708 | if (i == 3) | |
58964a49 | 709 | return("TLSv1/SSLv3"); |
d02b48c6 RE |
710 | else if (i == 2) |
711 | return("SSLv2"); | |
712 | else | |
713 | return("unknown"); | |
714 | } | |
715 | ||
716 | /* return the actual cipher being used */ | |
717 | char *SSL_CIPHER_get_name(c) | |
718 | SSL_CIPHER *c; | |
719 | { | |
720 | if (c != NULL) | |
721 | return(c->name); | |
722 | return("(NONE)"); | |
723 | } | |
724 | ||
725 | /* number of bits for symetric cipher */ | |
726 | int SSL_CIPHER_get_bits(c,alg_bits) | |
727 | SSL_CIPHER *c; | |
728 | int *alg_bits; | |
729 | { | |
730 | int ret=0,a=0; | |
731 | EVP_CIPHER *enc; | |
732 | EVP_MD *md; | |
733 | ||
734 | if (c != NULL) | |
735 | { | |
736 | if (!ssl_cipher_get_evp(c,&enc,&md)) | |
737 | return(0); | |
738 | ||
739 | a=EVP_CIPHER_key_length(enc)*8; | |
740 | ||
741 | if (c->algorithms & SSL_EXP) | |
742 | { | |
743 | ret=40; | |
744 | } | |
745 | else | |
746 | { | |
747 | if (c->algorithm2 & SSL2_CF_8_BYTE_ENC) | |
748 | ret=64; | |
749 | else | |
750 | ret=a; | |
751 | } | |
752 | } | |
753 | ||
754 | if (alg_bits != NULL) *alg_bits=a; | |
755 | ||
756 | return(ret); | |
757 | } | |
758 |