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diff --git a/src/lib/libssl/ssl_ciph.c b/src/lib/libssl/ssl_ciph.c
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1/* ssl/ssl_ciph.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 <openssl/objects.h>
61#include <openssl/comp.h>
62#include "ssl_locl.h"
63
64#define SSL_ENC_DES_IDX 0
65#define SSL_ENC_3DES_IDX 1
66#define SSL_ENC_RC4_IDX 2
67#define SSL_ENC_RC2_IDX 3
68#define SSL_ENC_IDEA_IDX 4
69#define SSL_ENC_eFZA_IDX 5
70#define SSL_ENC_NULL_IDX 6
71#define SSL_ENC_NUM_IDX 7
72
73static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
74 NULL,NULL,NULL,NULL,NULL,NULL,
75 };
76
77static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
78
79#define SSL_MD_MD5_IDX 0
80#define SSL_MD_SHA1_IDX 1
81#define SSL_MD_NUM_IDX 2
82static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
83 NULL,NULL,
84 };
85
86typedef struct cipher_sort_st
87 {
88 SSL_CIPHER *cipher;
89 int pref;
90 } CIPHER_SORT;
91
92#define CIPHER_ADD 1
93#define CIPHER_KILL 2
94#define CIPHER_DEL 3
95#define CIPHER_ORD 4
96
97typedef struct cipher_choice_st
98 {
99 int type;
100 unsigned long algorithms;
101 unsigned long mask;
102 long top;
103 } CIPHER_CHOICE;
104
105typedef struct cipher_order_st
106 {
107 SSL_CIPHER *cipher;
108 int active;
109 int dead;
110 struct cipher_order_st *next,*prev;
111 } CIPHER_ORDER;
112
113static SSL_CIPHER cipher_aliases[]={
114 /* Don't include eNULL unless specifically enabled */
115 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL, 0,SSL_ALL}, /* must be first */
116 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,SSL_MKEY_MASK},
117 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,SSL_MKEY_MASK},
118 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,SSL_MKEY_MASK},
119 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,SSL_MKEY_MASK},
120 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,SSL_MKEY_MASK},
121 {0,SSL_TXT_DH, 0,SSL_DH, 0,SSL_MKEY_MASK},
122 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,SSL_MKEY_MASK|SSL_AUTH_MASK},
123
124 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,SSL_AUTH_MASK},
125 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,SSL_AUTH_MASK},
126 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,SSL_AUTH_MASK},
127 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,SSL_AUTH_MASK},
128 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,SSL_AUTH_MASK},
129 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,SSL_AUTH_MASK},
130
131 {0,SSL_TXT_DES, 0,SSL_DES, 0,SSL_ENC_MASK},
132 {0,SSL_TXT_3DES,0,SSL_3DES, 0,SSL_ENC_MASK},
133 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,SSL_ENC_MASK},
134 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,SSL_ENC_MASK},
135 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,SSL_ENC_MASK},
136 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,SSL_ENC_MASK},
137 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,SSL_ENC_MASK},
138
139 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,SSL_MAC_MASK},
140 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,SSL_MAC_MASK},
141 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,SSL_MAC_MASK},
142
143 {0,SSL_TXT_NULL,0,SSL_NULL, 0,SSL_ENC_MASK},
144 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,SSL_AUTH_MASK|SSL_MKEY_MASK},
145 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,SSL_AUTH_MASK|SSL_MKEY_MASK},
146 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK},
147
148 {0,SSL_TXT_EXP40, 0,SSL_EXP40, 0,SSL_EXP_MASK},
149 {0,SSL_TXT_EXPORT,0,SSL_EXP40, 0,SSL_EXP_MASK},
150 {0,SSL_TXT_EXP56, 0,SSL_EXP56, 0,SSL_EXP_MASK},
151 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,SSL_SSL_MASK},
152 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,SSL_SSL_MASK},
153 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,SSL_SSL_MASK},
154 {0,SSL_TXT_LOW, 0,SSL_LOW, 0,SSL_STRONG_MASK},
155 {0,SSL_TXT_MEDIUM,0,SSL_MEDIUM,0,SSL_STRONG_MASK},
156 {0,SSL_TXT_HIGH, 0,SSL_HIGH, 0,SSL_STRONG_MASK},
157 };
158
159static int init_ciphers=1;
160static void load_ciphers();
161
162static int cmp_by_name(SSL_CIPHER **a, SSL_CIPHER **b)
163 {
164 return(strcmp((*a)->name,(*b)->name));
165 }
166
167static void load_ciphers(void)
168 {
169 init_ciphers=0;
170 ssl_cipher_methods[SSL_ENC_DES_IDX]=
171 EVP_get_cipherbyname(SN_des_cbc);
172 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
173 EVP_get_cipherbyname(SN_des_ede3_cbc);
174 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
175 EVP_get_cipherbyname(SN_rc4);
176 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
177 EVP_get_cipherbyname(SN_rc2_cbc);
178 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
179 EVP_get_cipherbyname(SN_idea_cbc);
180
181 ssl_digest_methods[SSL_MD_MD5_IDX]=
182 EVP_get_digestbyname(SN_md5);
183 ssl_digest_methods[SSL_MD_SHA1_IDX]=
184 EVP_get_digestbyname(SN_sha1);
185 }
186
187int ssl_cipher_get_evp(SSL_SESSION *s, const EVP_CIPHER **enc,
188 const EVP_MD **md, SSL_COMP **comp)
189 {
190 int i;
191 SSL_CIPHER *c;
192
193 c=s->cipher;
194 if (c == NULL) return(0);
195 if (comp != NULL)
196 {
197 SSL_COMP ctmp;
198
199 if (s->compress_meth == 0)
200 *comp=NULL;
201 else if (ssl_comp_methods == NULL)
202 {
203 /* bad */
204 *comp=NULL;
205 }
206 else
207 {
208
209 ctmp.id=s->compress_meth;
210 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
211 if (i >= 0)
212 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
213 else
214 *comp=NULL;
215 }
216 }
217
218 if ((enc == NULL) || (md == NULL)) return(0);
219
220 switch (c->algorithms & SSL_ENC_MASK)
221 {
222 case SSL_DES:
223 i=SSL_ENC_DES_IDX;
224 break;
225 case SSL_3DES:
226 i=SSL_ENC_3DES_IDX;
227 break;
228 case SSL_RC4:
229 i=SSL_ENC_RC4_IDX;
230 break;
231 case SSL_RC2:
232 i=SSL_ENC_RC2_IDX;
233 break;
234 case SSL_IDEA:
235 i=SSL_ENC_IDEA_IDX;
236 break;
237 case SSL_eNULL:
238 i=SSL_ENC_NULL_IDX;
239 break;
240 default:
241 i= -1;
242 break;
243 }
244
245 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
246 *enc=NULL;
247 else
248 {
249 if (i == SSL_ENC_NULL_IDX)
250 *enc=EVP_enc_null();
251 else
252 *enc=ssl_cipher_methods[i];
253 }
254
255 switch (c->algorithms & SSL_MAC_MASK)
256 {
257 case SSL_MD5:
258 i=SSL_MD_MD5_IDX;
259 break;
260 case SSL_SHA1:
261 i=SSL_MD_SHA1_IDX;
262 break;
263 default:
264 i= -1;
265 break;
266 }
267 if ((i < 0) || (i > SSL_MD_NUM_IDX))
268 *md=NULL;
269 else
270 *md=ssl_digest_methods[i];
271
272 if ((*enc != NULL) && (*md != NULL))
273 return(1);
274 else
275 return(0);
276 }
277
278#define ITEM_SEP(a) \
279 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
280
281static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
282 CIPHER_ORDER **tail)
283 {
284 if (curr == *tail) return;
285 if (curr == *head)
286 *head=curr->next;
287 if (curr->prev != NULL)
288 curr->prev->next=curr->next;
289 if (curr->next != NULL) /* should always be true */
290 curr->next->prev=curr->prev;
291 (*tail)->next=curr;
292 curr->prev= *tail;
293 curr->next=NULL;
294 *tail=curr;
295 }
296
297STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_METHOD *ssl_method,
298 STACK_OF(SSL_CIPHER) **cipher_list,
299 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
300 char *str)
301 {
302 SSL_CIPHER *c;
303 char *l;
304 STACK_OF(SSL_CIPHER) *ret=NULL,*ok=NULL;
305#define CL_BUF 40
306 char buf[CL_BUF];
307 char *tmp_str=NULL;
308 unsigned long mask,algorithms,ma;
309 char *start;
310 int i,j,k,num=0,ch,multi;
311 unsigned long al;
312 STACK *ca_list=NULL;
313 int current_x,num_x;
314 CIPHER_CHOICE *ops=NULL;
315 CIPHER_ORDER *list=NULL,*head=NULL,*tail=NULL,*curr,*tail2,*curr2;
316 int list_num;
317 int type;
318 SSL_CIPHER c_tmp,*cp;
319
320 if (str == NULL) return(NULL);
321
322 if (strncmp(str,"DEFAULT",7) == 0)
323 {
324 i=strlen(str)+2+strlen(SSL_DEFAULT_CIPHER_LIST);
325 if ((tmp_str=Malloc(i)) == NULL)
326 {
327 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
328 goto err;
329 }
330 strcpy(tmp_str,SSL_DEFAULT_CIPHER_LIST);
331 strcat(tmp_str,":");
332 strcat(tmp_str,&(str[7]));
333 str=tmp_str;
334 }
335 if (init_ciphers) load_ciphers();
336
337 num=ssl_method->num_ciphers();
338
339 if ((ret=sk_SSL_CIPHER_new(NULL)) == NULL) goto err;
340 if ((ca_list=(STACK *)sk_new(cmp_by_name)) == NULL) goto err;
341
342 mask =SSL_kFZA;
343#ifdef NO_RSA
344 mask|=SSL_aRSA|SSL_kRSA;
345#endif
346#ifdef NO_DSA
347 mask|=SSL_aDSS;
348#endif
349#ifdef NO_DH
350 mask|=SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
351#endif
352
353#ifdef SSL_FORBID_ENULL
354 mask|=SSL_eNULL;
355#endif
356
357 mask|=(ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL)?SSL_DES :0;
358 mask|=(ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL)?SSL_3DES:0;
359 mask|=(ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL)?SSL_RC4 :0;
360 mask|=(ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL)?SSL_RC2 :0;
361 mask|=(ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL)?SSL_IDEA:0;
362 mask|=(ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL)?SSL_eFZA:0;
363
364 mask|=(ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL)?SSL_MD5 :0;
365 mask|=(ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL)?SSL_SHA1:0;
366
367 if ((list=(CIPHER_ORDER *)Malloc(sizeof(CIPHER_ORDER)*num)) == NULL)
368 goto err;
369
370 /* Get the initial list of ciphers */
371 list_num=0;
372 for (i=0; i<num; i++)
373 {
374 c=ssl_method->get_cipher((unsigned int)i);
375 /* drop those that use any of that is not available */
376 if ((c != NULL) && c->valid && !(c->algorithms & mask))
377 {
378 list[list_num].cipher=c;
379 list[list_num].next=NULL;
380 list[list_num].prev=NULL;
381 list[list_num].active=0;
382 list_num++;
383 if (!sk_push(ca_list,(char *)c)) goto err;
384 }
385 }
386
387 for (i=1; i<list_num-1; i++)
388 {
389 list[i].prev= &(list[i-1]);
390 list[i].next= &(list[i+1]);
391 }
392 if (list_num > 0)
393 {
394 head= &(list[0]);
395 head->prev=NULL;
396 head->next= &(list[1]);
397 tail= &(list[list_num-1]);
398 tail->prev= &(list[list_num-2]);
399 tail->next=NULL;
400 }
401
402 /* special case */
403 cipher_aliases[0].algorithms &= ~mask;
404
405 /* get the aliases */
406 k=sizeof(cipher_aliases)/sizeof(SSL_CIPHER);
407 for (j=0; j<k; j++)
408 {
409 al=cipher_aliases[j].algorithms;
410 /* Drop those that are not relevent */
411 if ((al & mask) == al) continue;
412 if (!sk_push(ca_list,(char *)&(cipher_aliases[j]))) goto err;
413 }
414
415 /* ca_list now holds a 'stack' of SSL_CIPHERS, some real, some
416 * 'aliases' */
417
418 /* how many parameters are there? */
419 num=1;
420 for (l=str; *l; l++)
421 if (ITEM_SEP(*l))
422 num++;
423 ops=(CIPHER_CHOICE *)Malloc(sizeof(CIPHER_CHOICE)*num);
424 if (ops == NULL) goto err;
425 memset(ops,0,sizeof(CIPHER_CHOICE)*num);
426
427 /* we now parse the input string and create our operations */
428 l=str;
429 i=0;
430 current_x=0;
431
432 for (;;)
433 {
434 ch= *l;
435
436 if (ch == '\0') break;
437
438 if (ch == '-')
439 { j=CIPHER_DEL; l++; }
440 else if (ch == '+')
441 { j=CIPHER_ORD; l++; }
442 else if (ch == '!')
443 { j=CIPHER_KILL; l++; }
444 else
445 { j=CIPHER_ADD; }
446
447 if (ITEM_SEP(ch))
448 {
449 l++;
450 continue;
451 }
452 ops[current_x].type=j;
453 ops[current_x].algorithms=0;
454 ops[current_x].mask=0;
455
456 start=l;
457 for (;;)
458 {
459 ch= *l;
460 i=0;
461#ifndef CHARSET_EBCDIC
462 while ( ((ch >= 'A') && (ch <= 'Z')) ||
463 ((ch >= '0') && (ch <= '9')) ||
464 ((ch >= 'a') && (ch <= 'z')) ||
465 (ch == '-'))
466#else
467 while ( isalnum(ch) || (ch == '-'))
468#endif
469 {
470 buf[i]=ch;
471 ch= *(++l);
472 i++;
473 if (i >= (CL_BUF-2)) break;
474 }
475 buf[i]='\0';
476
477 /* check for multi-part specification */
478 if (ch == '+')
479 {
480 multi=1;
481 l++;
482 }
483 else
484 multi=0;
485
486 c_tmp.name=buf;
487 j=sk_find(ca_list,(char *)&c_tmp);
488 if (j < 0)
489 goto end_loop;
490
491 cp=(SSL_CIPHER *)sk_value(ca_list,j);
492 ops[current_x].algorithms|=cp->algorithms;
493 /* We add the SSL_SSL_MASK so we can match the
494 * SSLv2 and SSLv3 versions of RC4-MD5 */
495 ops[current_x].mask|=cp->mask;
496 if (!multi) break;
497 }
498 current_x++;
499 if (ch == '\0') break;
500end_loop:
501 /* Make sure we scan until the next valid start point */
502 while ((*l != '\0') && ITEM_SEP(*l))
503 l++;
504 }
505
506 num_x=current_x;
507 current_x=0;
508
509 /* We will now process the list of ciphers, once for each category, to
510 * decide what we should do with it. */
511 for (j=0; j<num_x; j++)
512 {
513 algorithms=ops[j].algorithms;
514 type=ops[j].type;
515 mask=ops[j].mask;
516
517 curr=head;
518 curr2=head;
519 tail2=tail;
520 for (;;)
521 {
522 if ((curr == NULL) || (curr == tail2)) break;
523 curr=curr2;
524 curr2=curr->next;
525
526 cp=curr->cipher;
527 ma=mask & cp->algorithms;
528 if ((ma == 0) || ((ma & algorithms) != ma))
529 {
530 /* does not apply */
531 continue;
532 }
533
534 /* add the cipher if it has not been added yet. */
535 if (type == CIPHER_ADD)
536 {
537 if (!curr->active)
538 {
539 ll_append_tail(&head,curr,&tail);
540 curr->active=1;
541 }
542 }
543 /* Move the added cipher to this location */
544 else if (type == CIPHER_ORD)
545 {
546 if (curr->active)
547 {
548 ll_append_tail(&head,curr,&tail);
549 }
550 }
551 else if (type == CIPHER_DEL)
552 curr->active=0;
553 if (type == CIPHER_KILL)
554 {
555 if (head == curr)
556 head=curr->next;
557 else
558 curr->prev->next=curr->next;
559 if (tail == curr)
560 tail=curr->prev;
561 curr->active=0;
562 if (curr->next != NULL)
563 curr->next->prev=curr->prev;
564 if (curr->prev != NULL)
565 curr->prev->next=curr->next;
566 curr->next=NULL;
567 curr->prev=NULL;
568 }
569 }
570 }
571
572 for (curr=head; curr != NULL; curr=curr->next)
573 {
574 if (curr->active)
575 {
576 sk_SSL_CIPHER_push(ret,curr->cipher);
577#ifdef CIPHER_DEBUG
578 printf("<%s>\n",curr->cipher->name);
579#endif
580 }
581 }
582
583 if (cipher_list != NULL)
584 {
585 if (*cipher_list != NULL)
586 sk_SSL_CIPHER_free(*cipher_list);
587 *cipher_list=ret;
588 }
589
590 if (cipher_list_by_id != NULL)
591 {
592 if (*cipher_list_by_id != NULL)
593 sk_SSL_CIPHER_free(*cipher_list_by_id);
594 *cipher_list_by_id=sk_SSL_CIPHER_dup(ret);
595 }
596
597 if ( (cipher_list_by_id == NULL) ||
598 (*cipher_list_by_id == NULL) ||
599 (cipher_list == NULL) ||
600 (*cipher_list == NULL))
601 goto err;
602 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
603
604 ok=ret;
605 ret=NULL;
606err:
607 if (tmp_str) Free(tmp_str);
608 if (ops != NULL) Free(ops);
609 if (ret != NULL) sk_SSL_CIPHER_free(ret);
610 if (ca_list != NULL) sk_free(ca_list);
611 if (list != NULL) Free(list);
612 return(ok);
613 }
614
615char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
616 {
617 int is_export,pkl,kl;
618 char *ver,*exp;
619 char *kx,*au,*enc,*mac;
620 unsigned long alg,alg2;
621 static char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
622
623 alg=cipher->algorithms;
624 alg2=cipher->algorithm2;
625
626 is_export=SSL_IS_EXPORT(alg);
627 pkl=SSL_EXPORT_PKEYLENGTH(alg);
628 kl=SSL_EXPORT_KEYLENGTH(alg);
629 exp=is_export?" export":"";
630
631 if (alg & SSL_SSLV2)
632 ver="SSLv2";
633 else if (alg & SSL_SSLV3)
634 ver="SSLv3";
635 else
636 ver="unknown";
637
638 switch (alg&SSL_MKEY_MASK)
639 {
640 case SSL_kRSA:
641 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
642 break;
643 case SSL_kDHr:
644 kx="DH/RSA";
645 break;
646 case SSL_kDHd:
647 kx="DH/DSS";
648 break;
649 case SSL_kFZA:
650 kx="Fortezza";
651 break;
652 case SSL_kEDH:
653 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
654 break;
655 default:
656 kx="unknown";
657 }
658
659 switch (alg&SSL_AUTH_MASK)
660 {
661 case SSL_aRSA:
662 au="RSA";
663 break;
664 case SSL_aDSS:
665 au="DSS";
666 break;
667 case SSL_aDH:
668 au="DH";
669 break;
670 case SSL_aFZA:
671 case SSL_aNULL:
672 au="None";
673 break;
674 default:
675 au="unknown";
676 break;
677 }
678
679 switch (alg&SSL_ENC_MASK)
680 {
681 case SSL_DES:
682 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
683 break;
684 case SSL_3DES:
685 enc="3DES(168)";
686 break;
687 case SSL_RC4:
688 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
689 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
690 break;
691 case SSL_RC2:
692 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
693 break;
694 case SSL_IDEA:
695 enc="IDEA(128)";
696 break;
697 case SSL_eFZA:
698 enc="Fortezza";
699 break;
700 case SSL_eNULL:
701 enc="None";
702 break;
703 default:
704 enc="unknown";
705 break;
706 }
707
708 switch (alg&SSL_MAC_MASK)
709 {
710 case SSL_MD5:
711 mac="MD5";
712 break;
713 case SSL_SHA1:
714 mac="SHA1";
715 break;
716 default:
717 mac="unknown";
718 break;
719 }
720
721 if (buf == NULL)
722 {
723 buf=Malloc(128);
724 if (buf == NULL) return("Malloc Error");
725 }
726 else if (len < 128)
727 return("Buffer too small");
728
729 sprintf(buf,format,cipher->name,ver,kx,au,enc,mac,exp);
730 return(buf);
731 }
732
733char *SSL_CIPHER_get_version(SSL_CIPHER *c)
734 {
735 int i;
736
737 if (c == NULL) return("(NONE)");
738 i=(int)(c->id>>24L);
739 if (i == 3)
740 return("TLSv1/SSLv3");
741 else if (i == 2)
742 return("SSLv2");
743 else
744 return("unknown");
745 }
746
747/* return the actual cipher being used */
748const char *SSL_CIPHER_get_name(SSL_CIPHER *c)
749 {
750 if (c != NULL)
751 return(c->name);
752 return("(NONE)");
753 }
754
755/* number of bits for symetric cipher */
756int SSL_CIPHER_get_bits(SSL_CIPHER *c, int *alg_bits)
757 {
758 int ret=0,a=0;
759 const EVP_CIPHER *enc;
760 const EVP_MD *md;
761 SSL_SESSION ss;
762
763 if (c != NULL)
764 {
765 ss.cipher=c;
766 if (!ssl_cipher_get_evp(&ss,&enc,&md,NULL))
767 return(0);
768
769 a=EVP_CIPHER_key_length(enc)*8;
770
771 if (SSL_C_IS_EXPORT(c))
772 {
773 ret=SSL_C_EXPORT_KEYLENGTH(c)*8;
774 }
775 else
776 {
777 if (c->algorithm2 & SSL2_CF_8_BYTE_ENC)
778 ret=64;
779 else
780 ret=a;
781 }
782 }
783
784 if (alg_bits != NULL) *alg_bits=a;
785
786 return(ret);
787 }
788
789SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
790 {
791 SSL_COMP *ctmp;
792 int i,nn;
793
794 if ((n == 0) || (sk == NULL)) return(NULL);
795 nn=sk_SSL_COMP_num(sk);
796 for (i=0; i<nn; i++)
797 {
798 ctmp=sk_SSL_COMP_value(sk,i);
799 if (ctmp->id == n)
800 return(ctmp);
801 }
802 return(NULL);
803 }
804
805static int sk_comp_cmp(SSL_COMP **a,SSL_COMP **b)
806 {
807 return((*a)->id-(*b)->id);
808 }
809
810STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
811 {
812 return(ssl_comp_methods);
813 }
814
815int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
816 {
817 SSL_COMP *comp;
818 STACK_OF(SSL_COMP) *sk;
819
820 comp=(SSL_COMP *)Malloc(sizeof(SSL_COMP));
821 comp->id=id;
822 comp->method=cm;
823 if (ssl_comp_methods == NULL)
824 sk=ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
825 else
826 sk=ssl_comp_methods;
827 if ((sk == NULL) || !sk_SSL_COMP_push(sk,comp))
828 {
829 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
830 return(0);
831 }
832 else
833 return(1);
834 }
835
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-24 12:45:05 +0000