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_EXP|SSL_MEDIUM,
159 /* RC4_128_EXPORT40_WITH_MD5 */
162 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5,
163 SSL2_CK_RC4_128_EXPORT40_WITH_MD5,
169 SSL_EXPORT|SSL_EXP40,
175 /* RC2_128_CBC_WITH_MD5 */
178 SSL2_TXT_RC2_128_CBC_WITH_MD5,
179 SSL2_CK_RC2_128_CBC_WITH_MD5,
185 SSL_NOT_EXP|SSL_MEDIUM,
191 /* RC2_128_CBC_EXPORT40_WITH_MD5 */
194 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5,
195 SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5,
201 SSL_EXPORT|SSL_EXP40,
207 #ifndef OPENSSL_NO_IDEA
208 /* IDEA_128_CBC_WITH_MD5 */
211 SSL2_TXT_IDEA_128_CBC_WITH_MD5,
212 SSL2_CK_IDEA_128_CBC_WITH_MD5,
218 SSL_NOT_EXP|SSL_MEDIUM,
225 /* DES_64_CBC_WITH_MD5 */
228 SSL2_TXT_DES_64_CBC_WITH_MD5,
229 SSL2_CK_DES_64_CBC_WITH_MD5,
241 /* DES_192_EDE3_CBC_WITH_MD5 */
244 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5,
245 SSL2_CK_DES_192_EDE3_CBC_WITH_MD5,
251 SSL_NOT_EXP|SSL_HIGH,
258 /* RC4_64_WITH_MD5 */
261 SSL2_TXT_RC4_64_WITH_MD5,
262 SSL2_CK_RC4_64_WITH_MD5,
276 /* NULL SSLeay (testing) */
293 /* end of list :-) */
296 long ssl2_default_timeout(void)
301 int ssl2_num_ciphers(void)
303 return(SSL2_NUM_CIPHERS);
306 const SSL_CIPHER *ssl2_get_cipher(unsigned int u)
308 if (u < SSL2_NUM_CIPHERS)
309 return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u]));
314 int ssl2_pending(const SSL *s)
316 return SSL_in_init(s) ? 0 : s->s2->ract_data_length;
323 if ((s2=OPENSSL_malloc(sizeof *s2)) == NULL) goto err;
324 memset(s2,0,sizeof *s2);
326 #if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2
327 # error "assertion failed"
330 if ((s2->rbuf=OPENSSL_malloc(
331 SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2)) == NULL) goto err;
332 /* wbuf needs one byte more because when using two-byte headers,
333 * we leave the first byte unused in do_ssl_write (s2_pkt.c) */
334 if ((s2->wbuf=OPENSSL_malloc(
335 SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+3)) == NULL) goto err;
343 if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf);
344 if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf);
350 void ssl2_free(SSL *s)
358 if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf);
359 if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf);
360 OPENSSL_cleanse(s2,sizeof *s2);
365 void ssl2_clear(SSL *s)
368 unsigned char *rbuf,*wbuf;
375 memset(s2,0,sizeof *s2);
381 s->version=SSL2_VERSION;
385 long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg)
391 case SSL_CTRL_GET_SESSION_REUSED:
400 long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
405 long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
410 long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
415 /* This function needs to check if the ciphers required are actually
417 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p)
420 const SSL_CIPHER *cp;
423 id=0x02000000L|((unsigned long)p[0]<<16L)|
424 ((unsigned long)p[1]<<8L)|(unsigned long)p[2];
426 cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS);
427 if ((cp == NULL) || (cp->valid == 0))
433 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
440 if ((l & 0xff000000) != 0x02000000) return(0);
441 p[0]=((unsigned char)(l>>16L))&0xFF;
442 p[1]=((unsigned char)(l>> 8L))&0xFF;
443 p[2]=((unsigned char)(l ))&0xFF;
448 int ssl2_generate_key_material(SSL *s)
459 #ifdef CHARSET_EBCDIC
460 c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0',
463 EVP_MD_CTX_init(&ctx);
464 km=s->s2->key_material;
466 if (s->session->master_key_length < 0 ||
467 s->session->master_key_length > (int)sizeof(s->session->master_key))
469 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
472 md_size = EVP_MD_size(md5);
475 for (i=0; i<s->s2->key_material_length; i += md_size)
477 if (((km - s->s2->key_material) + md_size) >
478 (int)sizeof(s->s2->key_material))
480 /* EVP_DigestFinal_ex() below would write beyond buffer */
481 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR);
485 EVP_DigestInit_ex(&ctx, md5, NULL);
487 OPENSSL_assert(s->session->master_key_length >= 0
488 && s->session->master_key_length
489 < (int)sizeof(s->session->master_key));
490 EVP_DigestUpdate(&ctx,s->session->master_key,s->session->master_key_length);
491 EVP_DigestUpdate(&ctx,&c,1);
493 EVP_DigestUpdate(&ctx,s->s2->challenge,s->s2->challenge_length);
494 EVP_DigestUpdate(&ctx,s->s2->conn_id,s->s2->conn_id_length);
495 EVP_DigestFinal_ex(&ctx,km,NULL);
499 EVP_MD_CTX_cleanup(&ctx);
503 void ssl2_return_error(SSL *s, int err)
515 void ssl2_write_error(SSL *s)
517 unsigned char buf[3];
520 buf[0]=SSL2_MT_ERROR;
521 buf[1]=(s->error_code>>8)&0xff;
522 buf[2]=(s->error_code)&0xff;
524 /* state=s->rwstate;*/
526 error=s->error; /* number of bytes left to write */
528 OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf));
529 i=ssl2_write(s,&(buf[3-error]),error);
531 /* if (i == error) s->rwstate=state; */
541 s->msg_callback(1, s->version, 0, buf, 3, s, s->msg_callback_arg); /* ERROR */
545 int ssl2_shutdown(SSL *s)
547 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
550 #else /* !OPENSSL_NO_SSL2 */
553 static void *dummy=&dummy;