2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
112 #include "ssl_locl.h"
113 #ifndef OPENSSL_NO_SSL2
115 # include <openssl/objects.h>
116 # include <openssl/evp.h>
117 # include <openssl/md5.h>
119 const char ssl2_version_str[] = "SSLv2" OPENSSL_VERSION_PTEXT;
121 # define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER))
123 /* list of available SSLv2 ciphers (sorted by id) */
124 OPENSSL_GLOBAL const SSL_CIPHER ssl2_ciphers[] = {
126 /* NULL_WITH_MD5 v3 */
129 SSL2_TXT_NULL_WITH_MD5,
130 SSL2_CK_NULL_WITH_MD5,
136 SSL_EXPORT | SSL_EXP40 | SSL_STRONG_NONE,
143 /* RC4_128_WITH_MD5 */
146 SSL2_TXT_RC4_128_WITH_MD5,
147 SSL2_CK_RC4_128_WITH_MD5,
153 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM,
160 /* RC4_128_EXPORT40_WITH_MD5 */
163 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5,
164 SSL2_CK_RC4_128_EXPORT40_WITH_MD5,
170 SSL_NOT_DEFAULT | SSL_EXPORT | SSL_EXP40,
177 /* RC2_128_CBC_WITH_MD5 */
180 SSL2_TXT_RC2_128_CBC_WITH_MD5,
181 SSL2_CK_RC2_128_CBC_WITH_MD5,
187 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM,
194 /* RC2_128_CBC_EXPORT40_WITH_MD5 */
197 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5,
198 SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5,
204 SSL_NOT_DEFAULT | SSL_EXPORT | SSL_EXP40,
211 # ifndef OPENSSL_NO_IDEA
212 /* IDEA_128_CBC_WITH_MD5 */
215 SSL2_TXT_IDEA_128_CBC_WITH_MD5,
216 SSL2_CK_IDEA_128_CBC_WITH_MD5,
222 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM,
230 /* DES_64_CBC_WITH_MD5 */
233 SSL2_TXT_DES_64_CBC_WITH_MD5,
234 SSL2_CK_DES_64_CBC_WITH_MD5,
240 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_LOW,
247 /* DES_192_EDE3_CBC_WITH_MD5 */
250 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5,
251 SSL2_CK_DES_192_EDE3_CBC_WITH_MD5,
257 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM,
264 /* RC4_64_WITH_MD5 */
267 SSL2_TXT_RC4_64_WITH_MD5,
268 SSL2_CK_RC4_64_WITH_MD5,
274 SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_LOW,
282 /* NULL SSLeay (testing) */
299 /* end of list :-) */
302 long ssl2_default_timeout(void)
307 int ssl2_num_ciphers(void)
309 return (SSL2_NUM_CIPHERS);
312 const SSL_CIPHER *ssl2_get_cipher(unsigned int u)
314 if (u < SSL2_NUM_CIPHERS)
315 return (&(ssl2_ciphers[SSL2_NUM_CIPHERS - 1 - u]));
320 int ssl2_pending(const SSL *s)
322 return SSL_in_init(s) ? 0 : s->s2->ract_data_length;
329 if ((s2 = OPENSSL_malloc(sizeof *s2)) == NULL)
331 memset(s2, 0, sizeof *s2);
333 # if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2
334 # error "assertion failed"
338 OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2)) == NULL)
341 * wbuf needs one byte more because when using two-byte headers, we leave
342 * the first byte unused in do_ssl_write (s2_pkt.c)
345 OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 3)) == NULL)
353 if (s2->wbuf != NULL)
354 OPENSSL_free(s2->wbuf);
355 if (s2->rbuf != NULL)
356 OPENSSL_free(s2->rbuf);
362 void ssl2_free(SSL *s)
370 if (s2->rbuf != NULL)
371 OPENSSL_free(s2->rbuf);
372 if (s2->wbuf != NULL)
373 OPENSSL_free(s2->wbuf);
374 OPENSSL_cleanse(s2, sizeof *s2);
379 void ssl2_clear(SSL *s)
382 unsigned char *rbuf, *wbuf;
389 memset(s2, 0, sizeof *s2);
394 s->packet = s2->rbuf;
395 s->version = SSL2_VERSION;
396 s->packet_length = 0;
399 long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg)
404 case SSL_CTRL_GET_SESSION_REUSED:
407 case SSL_CTRL_CHECK_PROTO_VERSION:
408 return ssl3_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, larg, parg);
415 long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
420 long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
425 long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
431 * This function needs to check if the ciphers required are actually
434 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p)
437 const SSL_CIPHER *cp;
440 id = 0x02000000L | ((unsigned long)p[0] << 16L) |
441 ((unsigned long)p[1] << 8L) | (unsigned long)p[2];
443 cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS);
447 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
453 if ((l & 0xff000000) != 0x02000000 && l != SSL3_CK_FALLBACK_SCSV)
455 p[0] = ((unsigned char)(l >> 16L)) & 0xFF;
456 p[1] = ((unsigned char)(l >> 8L)) & 0xFF;
457 p[2] = ((unsigned char)(l)) & 0xFF;
462 int ssl2_generate_key_material(SSL *s)
467 unsigned char c = '0';
473 # ifdef CHARSET_EBCDIC
474 c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', see
477 EVP_MD_CTX_init(&ctx);
478 km = s->s2->key_material;
480 if (s->session->master_key_length < 0 ||
481 s->session->master_key_length > (int)sizeof(s->session->master_key)) {
482 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
485 md_size = EVP_MD_size(md5);
488 for (i = 0; i < s->s2->key_material_length; i += md_size) {
489 if (((km - s->s2->key_material) + md_size) >
490 (int)sizeof(s->s2->key_material)) {
492 * EVP_DigestFinal_ex() below would write beyond buffer
494 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
498 EVP_DigestInit_ex(&ctx, md5, NULL);
500 OPENSSL_assert(s->session->master_key_length >= 0
501 && s->session->master_key_length
502 <= (int)sizeof(s->session->master_key));
503 EVP_DigestUpdate(&ctx, s->session->master_key,
504 s->session->master_key_length);
505 EVP_DigestUpdate(&ctx, &c, 1);
507 EVP_DigestUpdate(&ctx, s->s2->challenge, s->s2->challenge_length);
508 EVP_DigestUpdate(&ctx, s->s2->conn_id, s->s2->conn_id_length);
509 EVP_DigestFinal_ex(&ctx, km, NULL);
513 EVP_MD_CTX_cleanup(&ctx);
517 void ssl2_return_error(SSL *s, int err)
527 void ssl2_write_error(SSL *s)
529 unsigned char buf[3];
532 buf[0] = SSL2_MT_ERROR;
533 buf[1] = (s->error_code >> 8) & 0xff;
534 buf[2] = (s->error_code) & 0xff;
536 /* state=s->rwstate;*/
538 error = s->error; /* number of bytes left to write */
540 OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf));
541 i = ssl2_write(s, &(buf[3 - error]), error);
543 /* if (i == error) s->rwstate=state; */
548 s->error = error - i;
551 if (s->msg_callback) {
553 s->msg_callback(1, s->version, 0, buf, 3, s,
554 s->msg_callback_arg);
559 int ssl2_shutdown(SSL *s)
561 s->shutdown = (SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
564 #else /* !OPENSSL_NO_SSL2 */
567 static void *dummy = &dummy;