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.]
61 #include <openssl/buffer.h>
62 #include <openssl/rand.h>
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
65 #include <openssl/x509.h>
68 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
73 unsigned char *finish_md;
76 if (s->state & SSL_ST_ACCEPT)
78 finish_md = s->s3->tmp.server_finish_md;
79 finish_md_len = &s->s3->tmp.server_finish_md_len;
83 finish_md = s->s3->tmp.client_finish_md;
84 finish_md_len = &s->s3->tmp.client_finish_md_len;
89 d=(unsigned char *)s->init_buf->data;
92 i=s->method->ssl3_enc->final_finish_mac(s,
93 &(s->s3->finish_dgst1),
94 &(s->s3->finish_dgst2),
95 sender,slen,finish_md);
97 memcpy(p, finish_md, i);
102 /* MSVC 1.5 does not clear the top bytes of the word unless
108 *(d++)=SSL3_MT_FINISHED;
110 s->init_num=(int)l+4;
116 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
117 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
120 int ssl3_get_finished(SSL *s, int a, int b)
125 unsigned char *finish_md;
128 if (s->state & SSL_ST_ACCEPT)
130 finish_md = s->s3->tmp.client_finish_md;
131 finish_md_len = &s->s3->tmp.client_finish_md_len;
135 finish_md = s->s3->tmp.server_finish_md;
136 finish_md_len = &s->s3->tmp.server_finish_md_len;
139 /* the mac has already been generated when we received the
140 * change cipher spec message and is in finish_md
143 n=ssl3_get_message(s,
147 64, /* should actually be 36+4 :-) */
150 if (!ok) return((int)n);
152 /* If this occurs if we has missed a message */
153 if (!s->s3->change_cipher_spec)
155 al=SSL_AD_UNEXPECTED_MESSAGE;
156 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
159 s->s3->change_cipher_spec=0;
161 p=(unsigned char *)s->init_buf->data;
167 al=SSL_AD_DECODE_ERROR;
168 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
172 if (memcmp(p, finish_md, i) != 0)
174 al=SSL_AD_DECRYPT_ERROR;
175 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
181 ssl3_send_alert(s,SSL3_AL_FATAL,al);
185 /* for these 2 messages, we need to
186 * ssl->enc_read_ctx re-init
187 * ssl->s3->read_sequence zero
188 * ssl->s3->read_mac_secret re-init
189 * ssl->session->read_sym_enc assign
190 * ssl->session->read_compression assign
191 * ssl->session->read_hash assign
193 int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
199 p=(unsigned char *)s->init_buf->data;
207 /* SSL3_ST_CW_CHANGE_B */
208 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
211 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
217 X509_STORE_CTX xs_ctx;
220 /* TLSv1 sends a chain with nothing in it, instead of an alert */
222 if (!BUF_MEM_grow(buf,(int)(10)))
224 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
229 X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL);
234 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
236 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
239 p=(unsigned char *)&(buf->data[l]);
243 if (X509_NAME_cmp(X509_get_subject_name(x),
244 X509_get_issuer_name(x)) == 0) break;
246 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
247 X509_get_issuer_name(x),&obj);
250 /* Count is one too high since the X509_STORE_get uped the
255 X509_STORE_CTX_cleanup(&xs_ctx);
258 /* Thawte special :-) */
259 if (s->ctx->extra_certs != NULL)
260 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
262 x=sk_X509_value(s->ctx->extra_certs,i);
264 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
266 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
269 p=(unsigned char *)&(buf->data[l]);
276 p=(unsigned char *)&(buf->data[4]);
279 p=(unsigned char *)&(buf->data[0]);
280 *(p++)=SSL3_MT_CERTIFICATE;
286 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
293 if (s->s3->tmp.reuse_message)
295 s->s3->tmp.reuse_message=0;
296 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
298 al=SSL_AD_UNEXPECTED_MESSAGE;
299 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
303 return((int)s->s3->tmp.message_size);
306 p=(unsigned char *)s->init_buf->data;
310 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
312 if (i < (4-s->init_num))
315 return(ssl3_part_read(s,i));
318 if ((mt >= 0) && (*p != mt))
320 al=SSL_AD_UNEXPECTED_MESSAGE;
321 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
324 if((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) &&
325 (st1 == SSL3_ST_SR_CERT_A) &&
326 (stn == SSL3_ST_SR_CERT_B))
328 /* At this point we have got an MS SGC second client
329 * hello. We need to restart the mac and mac the data
330 * currently received.
332 ssl3_init_finished_mac(s);
333 ssl3_finish_mac(s, p + s->init_num, i);
336 s->s3->tmp.message_type= *(p++);
339 if (l > (unsigned long)max)
341 al=SSL_AD_ILLEGAL_PARAMETER;
342 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
345 if (l && !BUF_MEM_grow(s->init_buf,(int)l))
347 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
350 s->s3->tmp.message_size=l;
356 /* next state (stn) */
357 p=(unsigned char *)s->init_buf->data;
358 n=s->s3->tmp.message_size;
361 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n);
365 return(ssl3_part_read(s,i));
371 ssl3_send_alert(s,SSL3_AL_FATAL,al);
377 int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
383 pk=X509_get_pubkey(x);
386 if (pk == NULL) goto err;
389 if (i == EVP_PKEY_RSA)
391 ret=SSL_PKEY_RSA_ENC;
394 j=X509_get_ext_count(x);
395 /* check to see if this is a signing only certificate */
396 /* EAY EAY EAY EAY */
399 else if (i == EVP_PKEY_DSA)
401 ret=SSL_PKEY_DSA_SIGN;
403 else if (i == EVP_PKEY_DH)
405 /* if we just have a key, we needs to be guess */
411 j=X509_get_signature_type(x);
412 if (j == EVP_PKEY_RSA)
414 else if (j== EVP_PKEY_DSA)
423 if(!pkey) EVP_PKEY_free(pk);
427 int ssl_verify_alarm_type(long type)
433 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
434 case X509_V_ERR_UNABLE_TO_GET_CRL:
435 al=SSL_AD_UNKNOWN_CA;
437 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
438 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
439 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
440 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
441 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
442 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
443 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
444 case X509_V_ERR_CERT_NOT_YET_VALID:
445 case X509_V_ERR_CRL_NOT_YET_VALID:
446 al=SSL_AD_BAD_CERTIFICATE;
448 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
449 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
450 al=SSL_AD_DECRYPT_ERROR;
452 case X509_V_ERR_CERT_HAS_EXPIRED:
453 case X509_V_ERR_CRL_HAS_EXPIRED:
454 al=SSL_AD_CERTIFICATE_EXPIRED;
456 case X509_V_ERR_CERT_REVOKED:
457 al=SSL_AD_CERTIFICATE_REVOKED;
459 case X509_V_ERR_OUT_OF_MEM:
460 al=SSL_AD_INTERNAL_ERROR;
462 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
463 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
464 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
465 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
466 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
467 al=SSL_AD_UNKNOWN_CA;
469 case X509_V_ERR_APPLICATION_VERIFICATION:
470 al=SSL_AD_HANDSHAKE_FAILURE;
473 al=SSL_AD_CERTIFICATE_UNKNOWN;
479 int ssl3_setup_buffers(SSL *s)
484 if (s->s3->rbuf.buf == NULL)
486 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
487 extra=SSL3_RT_MAX_EXTRA;
490 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra))
496 if (s->s3->wbuf.buf == NULL)
498 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE))
503 s->packet= &(s->s3->rbuf.buf[0]);
506 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);