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.]
60 #ifndef OPENSSL_NO_SSL2
62 # include <openssl/objects.h>
63 # include <openssl/evp.h>
64 # include <openssl/md5.h>
66 const char ssl2_version_str[] = "SSLv2" OPENSSL_VERSION_PTEXT;
68 # define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER))
70 /* list of available SSLv2 ciphers (sorted by id) */
71 OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers[] = {
72 /* NULL_WITH_MD5 v3 */
76 SSL2_TXT_NULL_WITH_MD5,
77 SSL2_CK_NULL_WITH_MD5,
78 SSL_kRSA | SSL_aRSA | SSL_eNULL | SSL_MD5 | SSL_SSLV2,
79 SSL_EXPORT | SSL_EXP40 | SSL_STRONG_NONE,
87 /* RC4_128_WITH_MD5 */
90 SSL2_TXT_RC4_128_WITH_MD5,
91 SSL2_CK_RC4_128_WITH_MD5,
92 SSL_kRSA | SSL_aRSA | SSL_RC4 | SSL_MD5 | SSL_SSLV2,
93 SSL_NOT_EXP | SSL_MEDIUM,
100 /* RC4_128_EXPORT40_WITH_MD5 */
103 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5,
104 SSL2_CK_RC4_128_EXPORT40_WITH_MD5,
105 SSL_kRSA | SSL_aRSA | SSL_RC4 | SSL_MD5 | SSL_SSLV2,
106 SSL_EXPORT | SSL_EXP40,
113 /* RC2_128_CBC_WITH_MD5 */
116 SSL2_TXT_RC2_128_CBC_WITH_MD5,
117 SSL2_CK_RC2_128_CBC_WITH_MD5,
118 SSL_kRSA | SSL_aRSA | SSL_RC2 | SSL_MD5 | SSL_SSLV2,
119 SSL_NOT_EXP | SSL_MEDIUM,
126 /* RC2_128_CBC_EXPORT40_WITH_MD5 */
129 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5,
130 SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5,
131 SSL_kRSA | SSL_aRSA | SSL_RC2 | SSL_MD5 | SSL_SSLV2,
132 SSL_EXPORT | SSL_EXP40,
139 /* IDEA_128_CBC_WITH_MD5 */
140 # ifndef OPENSSL_NO_IDEA
143 SSL2_TXT_IDEA_128_CBC_WITH_MD5,
144 SSL2_CK_IDEA_128_CBC_WITH_MD5,
145 SSL_kRSA | SSL_aRSA | SSL_IDEA | SSL_MD5 | SSL_SSLV2,
146 SSL_NOT_EXP | SSL_MEDIUM,
154 /* DES_64_CBC_WITH_MD5 */
157 SSL2_TXT_DES_64_CBC_WITH_MD5,
158 SSL2_CK_DES_64_CBC_WITH_MD5,
159 SSL_kRSA | SSL_aRSA | SSL_DES | SSL_MD5 | SSL_SSLV2,
160 SSL_NOT_EXP | SSL_LOW,
167 /* DES_192_EDE3_CBC_WITH_MD5 */
170 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5,
171 SSL2_CK_DES_192_EDE3_CBC_WITH_MD5,
172 SSL_kRSA | SSL_aRSA | SSL_3DES | SSL_MD5 | SSL_SSLV2,
173 SSL_NOT_EXP | SSL_HIGH,
180 /* RC4_64_WITH_MD5 */
184 SSL2_TXT_RC4_64_WITH_MD5,
185 SSL2_CK_RC4_64_WITH_MD5,
186 SSL_kRSA | SSL_aRSA | SSL_RC4 | SSL_MD5 | SSL_SSLV2,
187 SSL_NOT_EXP | SSL_LOW,
195 /* NULL SSLeay (testing) */
211 /* end of list :-) */
214 long ssl2_default_timeout(void)
219 IMPLEMENT_ssl2_meth_func(sslv2_base_method,
220 ssl_undefined_function,
221 ssl_undefined_function, ssl_bad_method)
223 int ssl2_num_ciphers(void)
225 return (SSL2_NUM_CIPHERS);
228 SSL_CIPHER *ssl2_get_cipher(unsigned int u)
230 if (u < SSL2_NUM_CIPHERS)
231 return (&(ssl2_ciphers[SSL2_NUM_CIPHERS - 1 - u]));
236 int ssl2_pending(const SSL *s)
238 return SSL_in_init(s) ? 0 : s->s2->ract_data_length;
245 if ((s2 = OPENSSL_malloc(sizeof *s2)) == NULL)
247 memset(s2, 0, sizeof *s2);
249 # if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2
250 # error "assertion failed"
254 OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2)) == NULL)
257 * wbuf needs one byte more because when using two-byte headers, we leave
258 * the first byte unused in do_ssl_write (s2_pkt.c)
261 OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 3)) == NULL)
269 if (s2->wbuf != NULL)
270 OPENSSL_free(s2->wbuf);
271 if (s2->rbuf != NULL)
272 OPENSSL_free(s2->rbuf);
278 void ssl2_free(SSL *s)
286 if (s2->rbuf != NULL)
287 OPENSSL_free(s2->rbuf);
288 if (s2->wbuf != NULL)
289 OPENSSL_free(s2->wbuf);
290 OPENSSL_cleanse(s2, sizeof *s2);
295 void ssl2_clear(SSL *s)
298 unsigned char *rbuf, *wbuf;
305 memset(s2, 0, sizeof *s2);
310 s->packet = s2->rbuf;
311 s->version = SSL2_VERSION;
312 s->packet_length = 0;
315 long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg)
320 case SSL_CTRL_GET_SESSION_REUSED:
323 case SSL_CTRL_CHECK_PROTO_VERSION:
324 return ssl3_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, larg, parg);
331 long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
336 long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
341 long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
347 * This function needs to check if the ciphers required are actually
350 SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p)
355 id = 0x02000000L | ((unsigned long)p[0] << 16L) |
356 ((unsigned long)p[1] << 8L) | (unsigned long)p[2];
358 cp = (SSL_CIPHER *)OBJ_bsearch((char *)&c,
359 (char *)ssl2_ciphers,
360 SSL2_NUM_CIPHERS, sizeof(SSL_CIPHER),
361 FP_ICC ssl_cipher_id_cmp);
362 if ((cp == NULL) || (cp->valid == 0))
368 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
374 if ((l & 0xff000000) != 0x02000000 && l != SSL3_CK_FALLBACK_SCSV)
376 p[0] = ((unsigned char)(l >> 16L)) & 0xFF;
377 p[1] = ((unsigned char)(l >> 8L)) & 0xFF;
378 p[2] = ((unsigned char)(l)) & 0xFF;
383 int ssl2_generate_key_material(SSL *s)
388 unsigned char c = '0';
393 # ifdef CHARSET_EBCDIC
394 c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', see
397 EVP_MD_CTX_init(&ctx);
398 km = s->s2->key_material;
400 if (s->session->master_key_length < 0 ||
401 s->session->master_key_length > (int)sizeof(s->session->master_key)) {
402 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
406 for (i = 0; i < s->s2->key_material_length; i += EVP_MD_size(md5)) {
407 if (((km - s->s2->key_material) + EVP_MD_size(md5)) >
408 (int)sizeof(s->s2->key_material)) {
410 * EVP_DigestFinal_ex() below would write beyond buffer
412 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
416 EVP_DigestInit_ex(&ctx, md5, NULL);
418 OPENSSL_assert(s->session->master_key_length >= 0
419 && s->session->master_key_length
420 <= (int)sizeof(s->session->master_key));
421 EVP_DigestUpdate(&ctx, s->session->master_key,
422 s->session->master_key_length);
423 EVP_DigestUpdate(&ctx, &c, 1);
425 EVP_DigestUpdate(&ctx, s->s2->challenge, s->s2->challenge_length);
426 EVP_DigestUpdate(&ctx, s->s2->conn_id, s->s2->conn_id_length);
427 EVP_DigestFinal_ex(&ctx, km, NULL);
428 km += EVP_MD_size(md5);
431 EVP_MD_CTX_cleanup(&ctx);
435 void ssl2_return_error(SSL *s, int err)
445 void ssl2_write_error(SSL *s)
447 unsigned char buf[3];
450 buf[0] = SSL2_MT_ERROR;
451 buf[1] = (s->error_code >> 8) & 0xff;
452 buf[2] = (s->error_code) & 0xff;
454 /* state=s->rwstate;*/
456 error = s->error; /* number of bytes left to write */
458 OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf));
459 i = ssl2_write(s, &(buf[3 - error]), error);
461 /* if (i == error) s->rwstate=state; */
466 s->error = error - i;
469 if (s->msg_callback) {
471 s->msg_callback(1, s->version, 0, buf, 3, s,
472 s->msg_callback_arg);
477 int ssl2_shutdown(SSL *s)
479 s->shutdown = (SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
482 #else /* !OPENSSL_NO_SSL2 */
485 static void *dummy = &dummy;