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 #include <openssl/buffer.h>
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #include <openssl/x509.h>
67 int ssl3_send_finished(SSL *s, int a, int b, unsigned char *sender,
76 d=(unsigned char *)s->init_buf->data;
79 i=s->method->ssl3_enc->final_finish_mac(s,
80 &(s->s3->finish_dgst1),
81 &(s->s3->finish_dgst2),
87 /* MSVC 1.5 does not clear the top bytes of the word unless
93 *(d++)=SSL3_MT_FINISHED;
101 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
102 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
105 int ssl3_get_finished(SSL *s, int a, int b)
111 /* the mac has already been generated when we received the
112 * change cipher spec message and is in s->s3->tmp.in_dgst[12]
115 n=ssl3_get_message(s,
119 64, /* should actually be 36+4 :-) */
122 if (!ok) return((int)n);
124 /* If this occurs if we has missed a message */
125 if (!s->s3->change_cipher_spec)
127 al=SSL_AD_UNEXPECTED_MESSAGE;
128 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
131 s->s3->change_cipher_spec=0;
133 p=(unsigned char *)s->init_buf->data;
135 i=s->method->ssl3_enc->finish_mac_length;
139 al=SSL_AD_DECODE_ERROR;
140 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
144 if (memcmp( p, (char *)&(s->s3->tmp.finish_md[0]),i) != 0)
146 al=SSL_AD_DECRYPT_ERROR;
147 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
153 ssl3_send_alert(s,SSL3_AL_FATAL,al);
157 /* for these 2 messages, we need to
158 * ssl->enc_read_ctx re-init
159 * ssl->s3->read_sequence zero
160 * ssl->s3->read_mac_secret re-init
161 * ssl->session->read_sym_enc assign
162 * ssl->session->read_compression assign
163 * ssl->session->read_hash assign
165 int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
171 p=(unsigned char *)s->init_buf->data;
179 /* SSL3_ST_CW_CHANGE_B */
180 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
183 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
189 X509_STORE_CTX xs_ctx;
192 /* TLSv1 sends a chain with nothing in it, instead of an alert */
194 if (!BUF_MEM_grow(buf,(int)(10)))
196 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
201 X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL);
206 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
208 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
211 p=(unsigned char *)&(buf->data[l]);
215 if (X509_NAME_cmp(X509_get_subject_name(x),
216 X509_get_issuer_name(x)) == 0) break;
218 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
219 X509_get_issuer_name(x),&obj);
222 /* Count is one too high since the X509_STORE_get uped the
227 X509_STORE_CTX_cleanup(&xs_ctx);
230 /* Thawte special :-) */
231 if (s->ctx->extra_certs != NULL)
232 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
234 x=sk_X509_value(s->ctx->extra_certs,i);
236 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
238 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
241 p=(unsigned char *)&(buf->data[l]);
248 p=(unsigned char *)&(buf->data[4]);
251 p=(unsigned char *)&(buf->data[0]);
252 *(p++)=SSL3_MT_CERTIFICATE;
258 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
265 if (s->s3->tmp.reuse_message)
267 s->s3->tmp.reuse_message=0;
268 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
270 al=SSL_AD_UNEXPECTED_MESSAGE;
271 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
275 return((int)s->s3->tmp.message_size);
278 p=(unsigned char *)s->init_buf->data;
282 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
284 if (i < (4-s->init_num))
287 return(ssl3_part_read(s,i));
290 if ((mt >= 0) && (*p != mt))
292 al=SSL_AD_UNEXPECTED_MESSAGE;
293 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
296 s->s3->tmp.message_type= *(p++);
299 if (l > (unsigned long)max)
301 al=SSL_AD_ILLEGAL_PARAMETER;
302 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
305 if (l && !BUF_MEM_grow(s->init_buf,(int)l))
307 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
310 s->s3->tmp.message_size=l;
316 /* next state (stn) */
317 p=(unsigned char *)s->init_buf->data;
318 n=s->s3->tmp.message_size;
321 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n);
325 return(ssl3_part_read(s,i));
331 ssl3_send_alert(s,SSL3_AL_FATAL,al);
337 int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
343 pk=X509_get_pubkey(x);
346 if (pk == NULL) goto err;
349 if (i == EVP_PKEY_RSA)
351 ret=SSL_PKEY_RSA_ENC;
354 j=X509_get_ext_count(x);
355 /* check to see if this is a signing only certificate */
356 /* EAY EAY EAY EAY */
359 else if (i == EVP_PKEY_DSA)
361 ret=SSL_PKEY_DSA_SIGN;
363 else if (i == EVP_PKEY_DH)
365 /* if we just have a key, we needs to be guess */
371 j=X509_get_signature_type(x);
372 if (j == EVP_PKEY_RSA)
374 else if (j== EVP_PKEY_DSA)
383 if(!pkey) EVP_PKEY_free(pk);
387 int ssl_verify_alarm_type(long type)
393 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
394 case X509_V_ERR_UNABLE_TO_GET_CRL:
395 al=SSL_AD_UNKNOWN_CA;
397 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
398 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
399 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
400 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
401 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
402 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
403 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
404 case X509_V_ERR_CERT_NOT_YET_VALID:
405 case X509_V_ERR_CRL_NOT_YET_VALID:
406 al=SSL_AD_BAD_CERTIFICATE;
408 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
409 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
410 al=SSL_AD_DECRYPT_ERROR;
412 case X509_V_ERR_CERT_HAS_EXPIRED:
413 case X509_V_ERR_CRL_HAS_EXPIRED:
414 al=SSL_AD_CERTIFICATE_EXPIRED;
416 case X509_V_ERR_CERT_REVOKED:
417 al=SSL_AD_CERTIFICATE_REVOKED;
419 case X509_V_ERR_OUT_OF_MEM:
420 al=SSL_AD_INTERNAL_ERROR;
422 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
423 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
424 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
425 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
426 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
427 al=SSL_AD_UNKNOWN_CA;
429 case X509_V_ERR_APPLICATION_VERIFICATION:
430 al=SSL_AD_HANDSHAKE_FAILURE;
433 al=SSL_AD_CERTIFICATE_UNKNOWN;
439 int ssl3_setup_buffers(SSL *s)
444 if (s->s3->rbuf.buf == NULL)
446 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
447 extra=SSL3_RT_MAX_EXTRA;
450 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra))
456 if (s->s3->wbuf.buf == NULL)
458 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE))
463 s->packet= &(s->s3->rbuf.buf[0]);
466 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);