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/rsa.h>
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
65 #include <openssl/md5.h>
68 static long ssl2_default_timeout(void );
69 const char *ssl2_version_str
="SSLv2" OPENSSL_VERSION_PTEXT
;
71 #define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER))
73 OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers
[]={
74 /* NULL_WITH_MD5 v3 */
78 SSL2_TXT_NULL_WITH_MD5
,
79 SSL2_CK_NULL_WITH_MD5
,
80 SSL_kRSA
|SSL_aRSA
|SSL_eNULL
|SSL_MD5
|SSL_SSLV2
,
81 SSL_EXPORT
|SSL_EXP40
|SSL_STRONG_NONE
,
89 /* RC4_128_EXPORT40_WITH_MD5 */
92 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5
,
93 SSL2_CK_RC4_128_EXPORT40_WITH_MD5
,
94 SSL_kRSA
|SSL_aRSA
|SSL_RC4
|SSL_MD5
|SSL_SSLV2
,
102 /* RC4_128_WITH_MD5 */
105 SSL2_TXT_RC4_128_WITH_MD5
,
106 SSL2_CK_RC4_128_WITH_MD5
,
107 SSL_kRSA
|SSL_aRSA
|SSL_RC4
|SSL_MD5
|SSL_SSLV2
,
108 SSL_NOT_EXP
|SSL_MEDIUM
,
115 /* RC2_128_CBC_EXPORT40_WITH_MD5 */
118 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5
,
119 SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5
,
120 SSL_kRSA
|SSL_aRSA
|SSL_RC2
|SSL_MD5
|SSL_SSLV2
,
121 SSL_EXPORT
|SSL_EXP40
,
128 /* RC2_128_CBC_WITH_MD5 */
131 SSL2_TXT_RC2_128_CBC_WITH_MD5
,
132 SSL2_CK_RC2_128_CBC_WITH_MD5
,
133 SSL_kRSA
|SSL_aRSA
|SSL_RC2
|SSL_MD5
|SSL_SSLV2
,
134 SSL_NOT_EXP
|SSL_MEDIUM
,
141 /* IDEA_128_CBC_WITH_MD5 */
144 SSL2_TXT_IDEA_128_CBC_WITH_MD5
,
145 SSL2_CK_IDEA_128_CBC_WITH_MD5
,
146 SSL_kRSA
|SSL_aRSA
|SSL_IDEA
|SSL_MD5
|SSL_SSLV2
,
147 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
,
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
,
195 /* NULL SSLeay (testing) */
211 /* end of list :-) */
214 static SSL_METHOD SSLv2_data
= {
216 ssl2_new
, /* local */
217 ssl2_clear
, /* local */
218 ssl2_free
, /* local */
219 ssl_undefined_function
,
220 ssl_undefined_function
,
225 ssl_ok
, /* NULL - renegotiate */
226 ssl_ok
, /* NULL - check renegotiate */
227 ssl2_ctrl
, /* local */
228 ssl2_ctx_ctrl
, /* local */
229 ssl2_get_cipher_by_char
,
230 ssl2_put_cipher_by_char
,
235 ssl2_default_timeout
,
236 &ssl3_undef_enc_method
,
237 ssl_undefined_function
,
238 ssl2_callback_ctrl
, /* local */
239 ssl2_ctx_callback_ctrl
, /* local */
242 static long ssl2_default_timeout(void)
247 SSL_METHOD
*sslv2_base_method(void)
252 int ssl2_num_ciphers(void)
254 return(SSL2_NUM_CIPHERS
);
257 SSL_CIPHER
*ssl2_get_cipher(unsigned int u
)
259 if (u
< SSL2_NUM_CIPHERS
)
260 return(&(ssl2_ciphers
[SSL2_NUM_CIPHERS
-1-u
]));
265 int ssl2_pending(SSL
*s
)
267 return SSL_in_init(s
) ? 0 : s
->s2
->ract_data_length
;
274 if ((s2
=OPENSSL_malloc(sizeof *s2
)) == NULL
) goto err
;
275 memset(s2
,0,sizeof *s2
);
277 #if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2
278 # error "assertion failed"
281 if ((s2
->rbuf
=OPENSSL_malloc(
282 SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER
+2)) == NULL
) goto err
;
283 /* wbuf needs one byte more because when using two-byte headers,
284 * we leave the first byte unused in do_ssl_write (s2_pkt.c) */
285 if ((s2
->wbuf
=OPENSSL_malloc(
286 SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER
+3)) == NULL
) goto err
;
294 if (s2
->wbuf
!= NULL
) OPENSSL_free(s2
->wbuf
);
295 if (s2
->rbuf
!= NULL
) OPENSSL_free(s2
->rbuf
);
301 void ssl2_free(SSL
*s
)
309 if (s2
->rbuf
!= NULL
) OPENSSL_free(s2
->rbuf
);
310 if (s2
->wbuf
!= NULL
) OPENSSL_free(s2
->wbuf
);
311 memset(s2
,0,sizeof *s2
);
316 void ssl2_clear(SSL
*s
)
319 unsigned char *rbuf
,*wbuf
;
326 memset(s2
,0,sizeof *s2
);
332 s
->version
=SSL2_VERSION
;
336 long ssl2_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
342 case SSL_CTRL_GET_SESSION_REUSED
:
351 long ssl2_callback_ctrl(SSL
*s
, int cmd
, void (*fp
)())
356 long ssl2_ctx_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
361 long ssl2_ctx_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
)())
366 /* This function needs to check if the ciphers required are actually
368 SSL_CIPHER
*ssl2_get_cipher_by_char(const unsigned char *p
)
371 static SSL_CIPHER
*sorted
[SSL2_NUM_CIPHERS
];
372 SSL_CIPHER c
,*cp
= &c
,**cpp
;
378 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
382 for (i
=0; i
<SSL2_NUM_CIPHERS
; i
++)
383 sorted
[i
]= &(ssl2_ciphers
[i
]);
385 qsort((char *)sorted
,
386 SSL2_NUM_CIPHERS
,sizeof(SSL_CIPHER
*),
387 FP_ICC ssl_cipher_ptr_id_cmp
);
392 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
395 id
=0x02000000L
|((unsigned long)p
[0]<<16L)|
396 ((unsigned long)p
[1]<<8L)|(unsigned long)p
[2];
398 cpp
=(SSL_CIPHER
**)OBJ_bsearch((char *)&cp
,
400 SSL2_NUM_CIPHERS
,sizeof(SSL_CIPHER
*),
401 FP_ICC ssl_cipher_ptr_id_cmp
);
402 if ((cpp
== NULL
) || !(*cpp
)->valid
)
408 int ssl2_put_cipher_by_char(const SSL_CIPHER
*c
, unsigned char *p
)
415 if ((l
& 0xff000000) != 0x02000000) return(0);
416 p
[0]=((unsigned char)(l
>>16L))&0xFF;
417 p
[1]=((unsigned char)(l
>> 8L))&0xFF;
418 p
[2]=((unsigned char)(l
))&0xFF;
423 int ssl2_generate_key_material(SSL
*s
)
433 #ifdef CHARSET_EBCDIC
434 c
= os_toascii
['0']; /* Must be an ASCII '0', not EBCDIC '0',
437 EVP_MD_CTX_init(&ctx
);
438 km
=s
->s2
->key_material
;
440 if (s
->session
->master_key_length
< 0 || s
->session
->master_key_length
> sizeof s
->session
->master_key
)
442 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL
, ERR_R_INTERNAL_ERROR
);
446 for (i
=0; i
<s
->s2
->key_material_length
; i
+= EVP_MD_size(md5
))
448 if (((km
- s
->s2
->key_material
) + EVP_MD_size(md5
)) > sizeof s
->s2
->key_material
)
450 /* EVP_DigestFinal_ex() below would write beyond buffer */
451 SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL
, ERR_R_INTERNAL_ERROR
);
455 EVP_DigestInit_ex(&ctx
, md5
, NULL
);
457 OPENSSL_assert(s
->session
->master_key_length
>= 0
458 && s
->session
->master_key_length
459 < sizeof s
->session
->master_key
);
460 EVP_DigestUpdate(&ctx
,s
->session
->master_key
,s
->session
->master_key_length
);
461 EVP_DigestUpdate(&ctx
,&c
,1);
463 EVP_DigestUpdate(&ctx
,s
->s2
->challenge
,s
->s2
->challenge_length
);
464 EVP_DigestUpdate(&ctx
,s
->s2
->conn_id
,s
->s2
->conn_id_length
);
465 EVP_DigestFinal_ex(&ctx
,km
,NULL
);
466 km
+= EVP_MD_size(md5
);
469 EVP_MD_CTX_cleanup(&ctx
);
473 void ssl2_return_error(SSL
*s
, int err
)
485 void ssl2_write_error(SSL
*s
)
487 unsigned char buf
[3];
490 buf
[0]=SSL2_MT_ERROR
;
491 buf
[1]=(s
->error_code
>>8)&0xff;
492 buf
[2]=(s
->error_code
)&0xff;
494 /* state=s->rwstate;*/
496 error
=s
->error
; /* number of bytes left to write */
498 OPENSSL_assert(error
>= 0 && error
<= sizeof buf
);
499 i
=ssl2_write(s
,&(buf
[3-error
]),error
);
501 /* if (i == error) s->rwstate=state; */
511 s
->msg_callback(1, s
->version
, 0, buf
, 3, s
, s
->msg_callback_arg
); /* ERROR */
515 int ssl2_shutdown(SSL
*s
)
517 s
->shutdown
=(SSL_SENT_SHUTDOWN
|SSL_RECEIVED_SHUTDOWN
);
520 #else /* !OPENSSL_NO_SSL2 */
523 static void *dummy
=&dummy
;