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)
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),
82 sender,slen,s->s3->tmp.finish_md);
83 s->s3->tmp.finish_md_len = i;
84 memcpy(p, s->s3->tmp.finish_md, i);
89 /* MSVC 1.5 does not clear the top bytes of the word unless
95 *(d++)=SSL3_MT_FINISHED;
103 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
104 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
107 int ssl3_get_finished(SSL *s, int a, int b)
113 /* the mac has already been generated when we received the
114 * change cipher spec message and is in s->s3->tmp.peer_finish_md
117 n=ssl3_get_message(s,
121 64, /* should actually be 36+4 :-) */
124 if (!ok) return((int)n);
126 /* If this occurs if we has missed a message */
127 if (!s->s3->change_cipher_spec)
129 al=SSL_AD_UNEXPECTED_MESSAGE;
130 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
133 s->s3->change_cipher_spec=0;
135 p = (unsigned char *)s->init_buf->data;
136 i = s->s3->tmp.peer_finish_md_len;
140 al=SSL_AD_DECODE_ERROR;
141 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
145 if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
147 al=SSL_AD_DECRYPT_ERROR;
148 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
154 ssl3_send_alert(s,SSL3_AL_FATAL,al);
158 /* for these 2 messages, we need to
159 * ssl->enc_read_ctx re-init
160 * ssl->s3->read_sequence zero
161 * ssl->s3->read_mac_secret re-init
162 * ssl->session->read_sym_enc assign
163 * ssl->session->read_compression assign
164 * ssl->session->read_hash assign
166 int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
172 p=(unsigned char *)s->init_buf->data;
180 /* SSL3_ST_CW_CHANGE_B */
181 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
184 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
190 X509_STORE_CTX xs_ctx;
193 /* TLSv1 sends a chain with nothing in it, instead of an alert */
195 if (!BUF_MEM_grow(buf,(int)(10)))
197 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
202 X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL);
207 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
209 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
212 p=(unsigned char *)&(buf->data[l]);
216 if (X509_NAME_cmp(X509_get_subject_name(x),
217 X509_get_issuer_name(x)) == 0) break;
219 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
220 X509_get_issuer_name(x),&obj);
223 /* Count is one too high since the X509_STORE_get uped the
228 X509_STORE_CTX_cleanup(&xs_ctx);
231 /* Thawte special :-) */
232 if (s->ctx->extra_certs != NULL)
233 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
235 x=sk_X509_value(s->ctx->extra_certs,i);
237 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
239 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
242 p=(unsigned char *)&(buf->data[l]);
249 p=(unsigned char *)&(buf->data[4]);
252 p=(unsigned char *)&(buf->data[0]);
253 *(p++)=SSL3_MT_CERTIFICATE;
259 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
266 if (s->s3->tmp.reuse_message)
268 s->s3->tmp.reuse_message=0;
269 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
271 al=SSL_AD_UNEXPECTED_MESSAGE;
272 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
276 return((int)s->s3->tmp.message_size);
279 p=(unsigned char *)s->init_buf->data;
283 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
285 if (i < (4-s->init_num))
288 return(ssl3_part_read(s,i));
291 if ((mt >= 0) && (*p != mt))
293 al=SSL_AD_UNEXPECTED_MESSAGE;
294 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
297 if((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) &&
298 (st1 == SSL3_ST_SR_CERT_A) &&
299 (stn == SSL3_ST_SR_CERT_B))
301 /* At this point we have got an MS SGC second client
302 * hello. We need to restart the mac and mac the data
303 * currently received.
305 ssl3_init_finished_mac(s);
306 ssl3_finish_mac(s, p + s->init_num, i);
309 s->s3->tmp.message_type= *(p++);
312 if (l > (unsigned long)max)
314 al=SSL_AD_ILLEGAL_PARAMETER;
315 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
318 if (l && !BUF_MEM_grow(s->init_buf,(int)l))
320 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
323 s->s3->tmp.message_size=l;
329 /* next state (stn) */
330 p=(unsigned char *)s->init_buf->data;
331 n=s->s3->tmp.message_size;
334 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n);
338 return(ssl3_part_read(s,i));
344 ssl3_send_alert(s,SSL3_AL_FATAL,al);
350 int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
356 pk=X509_get_pubkey(x);
359 if (pk == NULL) goto err;
362 if (i == EVP_PKEY_RSA)
364 ret=SSL_PKEY_RSA_ENC;
367 j=X509_get_ext_count(x);
368 /* check to see if this is a signing only certificate */
369 /* EAY EAY EAY EAY */
372 else if (i == EVP_PKEY_DSA)
374 ret=SSL_PKEY_DSA_SIGN;
376 else if (i == EVP_PKEY_DH)
378 /* if we just have a key, we needs to be guess */
384 j=X509_get_signature_type(x);
385 if (j == EVP_PKEY_RSA)
387 else if (j== EVP_PKEY_DSA)
396 if(!pkey) EVP_PKEY_free(pk);
400 int ssl_verify_alarm_type(long type)
406 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
407 case X509_V_ERR_UNABLE_TO_GET_CRL:
408 al=SSL_AD_UNKNOWN_CA;
410 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
411 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
412 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
413 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
414 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
415 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
416 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
417 case X509_V_ERR_CERT_NOT_YET_VALID:
418 case X509_V_ERR_CRL_NOT_YET_VALID:
419 al=SSL_AD_BAD_CERTIFICATE;
421 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
422 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
423 al=SSL_AD_DECRYPT_ERROR;
425 case X509_V_ERR_CERT_HAS_EXPIRED:
426 case X509_V_ERR_CRL_HAS_EXPIRED:
427 al=SSL_AD_CERTIFICATE_EXPIRED;
429 case X509_V_ERR_CERT_REVOKED:
430 al=SSL_AD_CERTIFICATE_REVOKED;
432 case X509_V_ERR_OUT_OF_MEM:
433 al=SSL_AD_INTERNAL_ERROR;
435 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
436 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
437 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
438 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
439 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
440 al=SSL_AD_UNKNOWN_CA;
442 case X509_V_ERR_APPLICATION_VERIFICATION:
443 al=SSL_AD_HANDSHAKE_FAILURE;
446 al=SSL_AD_CERTIFICATE_UNKNOWN;
452 int ssl3_setup_buffers(SSL *s)
457 if (s->s3->rbuf.buf == NULL)
459 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
460 extra=SSL3_RT_MAX_EXTRA;
463 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra))
469 if (s->s3->wbuf.buf == NULL)
471 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE))
476 s->packet= &(s->s3->rbuf.buf[0]);
479 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);