1 /*! \file ssl/ssl_lib.c
2 * \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
119 #include <openssl/objects.h>
120 #include <openssl/lhash.h>
121 #include <openssl/x509v3.h>
122 #include "ssl_locl.h"
123 #include "kssl_lcl.h"
125 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
127 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
128 /* evil casts, but these functions are only called if there's a library bug */
129 (int (*)(SSL *,int))ssl_undefined_function,
130 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
131 ssl_undefined_function,
132 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
133 (int (*)(SSL*, int))ssl_undefined_function,
134 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
137 int SSL_clear(SSL *s)
141 if (s->method == NULL)
143 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
151 #if 0 /* Disabled since version 1.10 of this file (early return not
152 * needed because SSL_clear is not called when doing renegotiation) */
153 /* This is set if we are doing dynamic renegotiation so keep
154 * the old cipher. It is sort of a SSL_clear_lite :-) */
155 if (s->new_session) return(1);
159 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
164 state=s->state; /* Keep to check if we throw away the session-id */
167 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
169 s->version=s->method->version;
170 s->client_version=s->version;
171 s->rwstate=SSL_NOTHING;
172 s->rstate=SSL_ST_READ_HEADER;
174 s->read_ahead=s->ctx->read_ahead;
177 if (s->init_buf != NULL)
179 BUF_MEM_free(s->init_buf);
183 ssl_clear_cipher_ctx(s);
185 if (ssl_clear_bad_session(s))
187 SSL_SESSION_free(s->session);
194 /* Check to see if we were changed into a different method, if
195 * so, revert back if we are not doing session-id reuse. */
196 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
198 s->method->ssl_free(s);
199 s->method=s->ctx->method;
200 if (!s->method->ssl_new(s))
205 s->method->ssl_clear(s);
209 /** Used to change an SSL_CTXs default SSL method type */
210 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
212 STACK_OF(SSL_CIPHER) *sk;
216 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
217 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
218 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
220 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
226 SSL *SSL_new(SSL_CTX *ctx)
232 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
235 if (ctx->method == NULL)
237 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
241 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
242 if (s == NULL) goto err;
243 memset(s,0,sizeof(SSL));
245 #ifndef OPENSSL_NO_KRB5
246 s->kssl_ctx = kssl_ctx_new();
247 #endif /* OPENSSL_NO_KRB5 */
249 s->options=ctx->options;
251 s->max_cert_list=ctx->max_cert_list;
253 if (ctx->cert != NULL)
255 /* Earlier library versions used to copy the pointer to
256 * the CERT, not its contents; only when setting new
257 * parameters for the per-SSL copy, ssl_cert_new would be
258 * called (and the direct reference to the per-SSL_CTX
259 * settings would be lost, but those still were indirectly
260 * accessed for various purposes, and for that reason they
261 * used to be known as s->ctx->default_cert).
262 * Now we don't look at the SSL_CTX's CERT after having
263 * duplicated it once. */
265 s->cert = ssl_cert_dup(ctx->cert);
270 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
272 s->read_ahead=ctx->read_ahead;
273 s->msg_callback=ctx->msg_callback;
274 s->msg_callback_arg=ctx->msg_callback_arg;
275 s->verify_mode=ctx->verify_mode;
276 s->verify_depth=ctx->verify_depth;
277 s->sid_ctx_length=ctx->sid_ctx_length;
278 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
279 s->verify_callback=ctx->default_verify_callback;
280 s->generate_session_id=ctx->generate_session_id;
281 s->purpose = ctx->purpose;
282 s->trust = ctx->trust;
283 s->quiet_shutdown=ctx->quiet_shutdown;
285 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
288 s->verify_result=X509_V_OK;
290 s->method=ctx->method;
292 if (!s->method->ssl_new(s))
296 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
300 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
307 ssl_cert_free(s->cert);
309 SSL_CTX_free(s->ctx); /* decrement reference count */
312 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
316 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
317 unsigned int sid_ctx_len)
319 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
321 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
324 ctx->sid_ctx_length=sid_ctx_len;
325 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
330 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
331 unsigned int sid_ctx_len)
333 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
335 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
338 ssl->sid_ctx_length=sid_ctx_len;
339 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
344 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
346 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
347 ctx->generate_session_id = cb;
348 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
352 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
354 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
355 ssl->generate_session_id = cb;
356 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
360 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
363 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
364 * we can "construct" a session to give us the desired check - ie. to
365 * find if there's a session in the hash table that would conflict with
366 * any new session built out of this id/id_len and the ssl_version in
367 * use by this SSL. */
369 r.ssl_version = ssl->version;
370 r.session_id_length = id_len;
371 memcpy(r.session_id, id, id_len);
372 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
373 * callback is calling us to check the uniqueness of a shorter ID, it
374 * must be compared as a padded-out ID because that is what it will be
375 * converted to when the callback has finished choosing it. */
376 if((r.ssl_version == SSL2_VERSION) &&
377 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
379 memset(r.session_id + id_len, 0,
380 SSL2_SSL_SESSION_ID_LENGTH - id_len);
381 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
384 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
385 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
386 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
390 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
392 return X509_PURPOSE_set(&s->purpose, purpose);
395 int SSL_set_purpose(SSL *s, int purpose)
397 return X509_PURPOSE_set(&s->purpose, purpose);
400 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
402 return X509_TRUST_set(&s->trust, trust);
405 int SSL_set_trust(SSL *s, int trust)
407 return X509_TRUST_set(&s->trust, trust);
410 void SSL_free(SSL *s)
417 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
425 fprintf(stderr,"SSL_free, bad reference count\n");
430 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
434 /* If the buffering BIO is in place, pop it off */
435 if (s->bbio == s->wbio)
437 s->wbio=BIO_pop(s->wbio);
443 BIO_free_all(s->rbio);
444 if ((s->wbio != NULL) && (s->wbio != s->rbio))
445 BIO_free_all(s->wbio);
447 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
449 /* add extra stuff */
450 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
451 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
453 /* Make the next call work :-) */
454 if (s->session != NULL)
456 ssl_clear_bad_session(s);
457 SSL_SESSION_free(s->session);
460 ssl_clear_cipher_ctx(s);
462 if (s->cert != NULL) ssl_cert_free(s->cert);
463 /* Free up if allocated */
465 if (s->ctx) SSL_CTX_free(s->ctx);
467 if (s->client_CA != NULL)
468 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
470 if (s->method != NULL) s->method->ssl_free(s);
475 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
477 /* If the output buffering BIO is still in place, remove it
481 if (s->wbio == s->bbio)
483 s->wbio=s->wbio->next_bio;
484 s->bbio->next_bio=NULL;
487 if ((s->rbio != NULL) && (s->rbio != rbio))
488 BIO_free_all(s->rbio);
489 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
490 BIO_free_all(s->wbio);
495 BIO *SSL_get_rbio(SSL *s)
498 BIO *SSL_get_wbio(SSL *s)
501 int SSL_get_fd(SSL *s)
503 return(SSL_get_rfd(s));
506 int SSL_get_rfd(SSL *s)
512 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
518 int SSL_get_wfd(SSL *s)
524 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
530 #ifndef OPENSSL_NO_SOCK
531 int SSL_set_fd(SSL *s,int fd)
536 bio=BIO_new(BIO_s_socket());
540 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
543 BIO_set_fd(bio,fd,BIO_NOCLOSE);
544 SSL_set_bio(s,bio,bio);
550 int SSL_set_wfd(SSL *s,int fd)
555 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
556 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
558 bio=BIO_new(BIO_s_socket());
561 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
562 BIO_set_fd(bio,fd,BIO_NOCLOSE);
563 SSL_set_bio(s,SSL_get_rbio(s),bio);
566 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
572 int SSL_set_rfd(SSL *s,int fd)
577 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
578 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
580 bio=BIO_new(BIO_s_socket());
584 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
587 BIO_set_fd(bio,fd,BIO_NOCLOSE);
588 SSL_set_bio(s,bio,SSL_get_wbio(s));
591 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
599 /* return length of latest Finished message we sent, copy to 'buf' */
600 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
606 ret = s->s3->tmp.finish_md_len;
609 memcpy(buf, s->s3->tmp.finish_md, count);
614 /* return length of latest Finished message we expected, copy to 'buf' */
615 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
621 ret = s->s3->tmp.peer_finish_md_len;
624 memcpy(buf, s->s3->tmp.peer_finish_md, count);
630 int SSL_get_verify_mode(SSL *s)
632 return(s->verify_mode);
635 int SSL_get_verify_depth(SSL *s)
637 return(s->verify_depth);
640 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
642 return(s->verify_callback);
645 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
647 return(ctx->verify_mode);
650 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
652 return(ctx->verify_depth);
655 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
657 return(ctx->default_verify_callback);
660 void SSL_set_verify(SSL *s,int mode,
661 int (*callback)(int ok,X509_STORE_CTX *ctx))
664 if (callback != NULL)
665 s->verify_callback=callback;
668 void SSL_set_verify_depth(SSL *s,int depth)
670 s->verify_depth=depth;
673 void SSL_set_read_ahead(SSL *s,int yes)
678 int SSL_get_read_ahead(SSL *s)
680 return(s->read_ahead);
683 int SSL_pending(SSL *s)
685 /* SSL_pending cannot work properly if read-ahead is enabled
686 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
687 * and it is impossible to fix since SSL_pending cannot report
688 * errors that may be observed while scanning the new data.
689 * (Note that SSL_pending() is often used as a boolean value,
690 * so we'd better not return -1.)
692 return(s->method->ssl_pending(s));
695 X509 *SSL_get_peer_certificate(SSL *s)
699 if ((s == NULL) || (s->session == NULL))
704 if (r == NULL) return(r);
706 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
711 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
715 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
718 r=s->session->sess_cert->cert_chain;
720 /* If we are a client, cert_chain includes the peer's own
721 * certificate; if we are a server, it does not. */
726 /* Now in theory, since the calling process own 't' it should be safe to
727 * modify. We need to be able to read f without being hassled */
728 void SSL_copy_session_id(SSL *t,SSL *f)
732 /* Do we need to to SSL locking? */
733 SSL_set_session(t,SSL_get_session(f));
735 /* what if we are setup as SSLv2 but want to talk SSLv3 or
737 if (t->method != f->method)
739 t->method->ssl_free(t); /* cleanup current */
740 t->method=f->method; /* change method */
741 t->method->ssl_new(t); /* setup new */
747 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
752 if (tmp != NULL) ssl_cert_free(tmp);
753 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
756 /* Fix this so it checks all the valid key/cert options */
757 int SSL_CTX_check_private_key(SSL_CTX *ctx)
759 if ( (ctx == NULL) ||
760 (ctx->cert == NULL) ||
761 (ctx->cert->key->x509 == NULL))
763 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
766 if (ctx->cert->key->privatekey == NULL)
768 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
771 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
774 /* Fix this function so that it takes an optional type parameter */
775 int SSL_check_private_key(SSL *ssl)
779 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
782 if (ssl->cert == NULL)
784 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
787 if (ssl->cert->key->x509 == NULL)
789 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
792 if (ssl->cert->key->privatekey == NULL)
794 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
797 return(X509_check_private_key(ssl->cert->key->x509,
798 ssl->cert->key->privatekey));
801 int SSL_accept(SSL *s)
803 if (s->handshake_func == 0)
804 /* Not properly initialized yet */
805 SSL_set_accept_state(s);
807 return(s->method->ssl_accept(s));
810 int SSL_connect(SSL *s)
812 if (s->handshake_func == 0)
813 /* Not properly initialized yet */
814 SSL_set_connect_state(s);
816 return(s->method->ssl_connect(s));
819 long SSL_get_default_timeout(SSL *s)
821 return(s->method->get_timeout());
824 int SSL_read(SSL *s,void *buf,int num)
826 if (s->handshake_func == 0)
828 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
832 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
834 s->rwstate=SSL_NOTHING;
837 return(s->method->ssl_read(s,buf,num));
840 int SSL_peek(SSL *s,void *buf,int num)
842 if (s->handshake_func == 0)
844 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
848 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
852 return(s->method->ssl_peek(s,buf,num));
855 int SSL_write(SSL *s,const void *buf,int num)
857 if (s->handshake_func == 0)
859 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
863 if (s->shutdown & SSL_SENT_SHUTDOWN)
865 s->rwstate=SSL_NOTHING;
866 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
869 return(s->method->ssl_write(s,buf,num));
872 int SSL_shutdown(SSL *s)
874 /* Note that this function behaves differently from what one might
875 * expect. Return values are 0 for no success (yet),
876 * 1 for success; but calling it once is usually not enough,
877 * even if blocking I/O is used (see ssl3_shutdown).
880 if (s->handshake_func == 0)
882 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
886 if ((s != NULL) && !SSL_in_init(s))
887 return(s->method->ssl_shutdown(s));
892 int SSL_renegotiate(SSL *s)
894 if (s->new_session == 0)
898 return(s->method->ssl_renegotiate(s));
901 int SSL_renegotiate_pending(SSL *s)
903 /* becomes true when negotiation is requested;
904 * false again once a handshake has finished */
905 return (s->new_session != 0);
908 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
914 case SSL_CTRL_GET_READ_AHEAD:
915 return(s->read_ahead);
916 case SSL_CTRL_SET_READ_AHEAD:
921 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
922 s->msg_callback_arg = parg;
925 case SSL_CTRL_OPTIONS:
926 return(s->options|=larg);
928 return(s->mode|=larg);
929 case SSL_CTRL_GET_MAX_CERT_LIST:
930 return(s->max_cert_list);
931 case SSL_CTRL_SET_MAX_CERT_LIST:
933 s->max_cert_list=larg;
936 return(s->method->ssl_ctrl(s,cmd,larg,parg));
940 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
944 case SSL_CTRL_SET_MSG_CALLBACK:
945 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
949 return(s->method->ssl_callback_ctrl(s,cmd,fp));
953 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
955 return ctx->sessions;
958 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
964 case SSL_CTRL_GET_READ_AHEAD:
965 return(ctx->read_ahead);
966 case SSL_CTRL_SET_READ_AHEAD:
968 ctx->read_ahead=larg;
971 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
972 ctx->msg_callback_arg = parg;
975 case SSL_CTRL_GET_MAX_CERT_LIST:
976 return(ctx->max_cert_list);
977 case SSL_CTRL_SET_MAX_CERT_LIST:
978 l=ctx->max_cert_list;
979 ctx->max_cert_list=larg;
982 case SSL_CTRL_SET_SESS_CACHE_SIZE:
983 l=ctx->session_cache_size;
984 ctx->session_cache_size=larg;
986 case SSL_CTRL_GET_SESS_CACHE_SIZE:
987 return(ctx->session_cache_size);
988 case SSL_CTRL_SET_SESS_CACHE_MODE:
989 l=ctx->session_cache_mode;
990 ctx->session_cache_mode=larg;
992 case SSL_CTRL_GET_SESS_CACHE_MODE:
993 return(ctx->session_cache_mode);
995 case SSL_CTRL_SESS_NUMBER:
996 return(ctx->sessions->num_items);
997 case SSL_CTRL_SESS_CONNECT:
998 return(ctx->stats.sess_connect);
999 case SSL_CTRL_SESS_CONNECT_GOOD:
1000 return(ctx->stats.sess_connect_good);
1001 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1002 return(ctx->stats.sess_connect_renegotiate);
1003 case SSL_CTRL_SESS_ACCEPT:
1004 return(ctx->stats.sess_accept);
1005 case SSL_CTRL_SESS_ACCEPT_GOOD:
1006 return(ctx->stats.sess_accept_good);
1007 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1008 return(ctx->stats.sess_accept_renegotiate);
1009 case SSL_CTRL_SESS_HIT:
1010 return(ctx->stats.sess_hit);
1011 case SSL_CTRL_SESS_CB_HIT:
1012 return(ctx->stats.sess_cb_hit);
1013 case SSL_CTRL_SESS_MISSES:
1014 return(ctx->stats.sess_miss);
1015 case SSL_CTRL_SESS_TIMEOUTS:
1016 return(ctx->stats.sess_timeout);
1017 case SSL_CTRL_SESS_CACHE_FULL:
1018 return(ctx->stats.sess_cache_full);
1019 case SSL_CTRL_OPTIONS:
1020 return(ctx->options|=larg);
1022 return(ctx->mode|=larg);
1024 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1028 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1032 case SSL_CTRL_SET_MSG_CALLBACK:
1033 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1037 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1041 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1049 return((l > 0)?1:-1);
1052 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1053 const SSL_CIPHER * const *bp)
1057 l=(*ap)->id-(*bp)->id;
1061 return((l > 0)?1:-1);
1064 /** return a STACK of the ciphers available for the SSL and in order of
1066 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
1068 if ((s != NULL) && (s->cipher_list != NULL))
1070 return(s->cipher_list);
1072 else if ((s->ctx != NULL) &&
1073 (s->ctx->cipher_list != NULL))
1075 return(s->ctx->cipher_list);
1080 /** return a STACK of the ciphers available for the SSL and in order of
1082 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1084 if ((s != NULL) && (s->cipher_list_by_id != NULL))
1086 return(s->cipher_list_by_id);
1088 else if ((s != NULL) && (s->ctx != NULL) &&
1089 (s->ctx->cipher_list_by_id != NULL))
1091 return(s->ctx->cipher_list_by_id);
1096 /** The old interface to get the same thing as SSL_get_ciphers() */
1097 const char *SSL_get_cipher_list(SSL *s,int n)
1100 STACK_OF(SSL_CIPHER) *sk;
1102 if (s == NULL) return(NULL);
1103 sk=SSL_get_ciphers(s);
1104 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1106 c=sk_SSL_CIPHER_value(sk,n);
1107 if (c == NULL) return(NULL);
1111 /** specify the ciphers to be used by default by the SSL_CTX */
1112 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1114 STACK_OF(SSL_CIPHER) *sk;
1116 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1117 &ctx->cipher_list_by_id,str);
1119 return((sk == NULL)?0:1);
1122 /** specify the ciphers to be used by the SSL */
1123 int SSL_set_cipher_list(SSL *s,const char *str)
1125 STACK_OF(SSL_CIPHER) *sk;
1127 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1128 &s->cipher_list_by_id,str);
1130 return((sk == NULL)?0:1);
1133 /* works well for SSLv2, not so good for SSLv3 */
1134 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1138 STACK_OF(SSL_CIPHER) *sk;
1142 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1147 sk=s->session->ciphers;
1148 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1150 /* Decrement for either the ':' or a '\0' */
1152 c=sk_SSL_CIPHER_value(sk,i);
1153 for (cp=c->name; *cp; )
1169 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1174 #ifndef OPENSSL_NO_KRB5
1175 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1176 #endif /* OPENSSL_NO_KRB5 */
1178 if (sk == NULL) return(0);
1181 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1183 c=sk_SSL_CIPHER_value(sk,i);
1184 #ifndef OPENSSL_NO_KRB5
1185 if ((c->algorithms & SSL_KRB5) && nokrb5)
1187 #endif /* OPENSSL_NO_KRB5 */
1188 j=ssl_put_cipher_by_char(s,c,p);
1194 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1195 STACK_OF(SSL_CIPHER) **skp)
1198 STACK_OF(SSL_CIPHER) *sk;
1201 n=ssl_put_cipher_by_char(s,NULL,NULL);
1204 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1207 if ((skp == NULL) || (*skp == NULL))
1208 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1212 sk_SSL_CIPHER_zero(sk);
1215 for (i=0; i<num; i+=n)
1217 c=ssl_get_cipher_by_char(s,p);
1221 if (!sk_SSL_CIPHER_push(sk,c))
1223 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1233 if ((skp == NULL) || (*skp == NULL))
1234 sk_SSL_CIPHER_free(sk);
1238 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1243 ((unsigned int) a->session_id[0] )|
1244 ((unsigned int) a->session_id[1]<< 8L)|
1245 ((unsigned long)a->session_id[2]<<16L)|
1246 ((unsigned long)a->session_id[3]<<24L);
1250 /* NB: If this function (or indeed the hash function which uses a sort of
1251 * coarser function than this one) is changed, ensure
1252 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1253 * able to construct an SSL_SESSION that will collide with any existing session
1254 * with a matching session ID. */
1255 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1257 if (a->ssl_version != b->ssl_version)
1259 if (a->session_id_length != b->session_id_length)
1261 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1264 /* These wrapper functions should remain rather than redeclaring
1265 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1266 * variable. The reason is that the functions aren't static, they're exposed via
1268 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1269 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1271 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1277 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1281 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1283 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1286 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1290 memset(ret,0,sizeof(SSL_CTX));
1294 ret->cert_store=NULL;
1295 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1296 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1297 ret->session_cache_head=NULL;
1298 ret->session_cache_tail=NULL;
1300 /* We take the system default */
1301 ret->session_timeout=meth->get_timeout();
1303 ret->new_session_cb=0;
1304 ret->remove_session_cb=0;
1305 ret->get_session_cb=0;
1306 ret->generate_session_id=0;
1308 memset((char *)&ret->stats,0,sizeof(ret->stats));
1311 ret->quiet_shutdown=0;
1313 /* ret->cipher=NULL;*/
1314 /* ret->s2->challenge=NULL;
1315 ret->master_key=NULL;
1317 ret->s2->conn_id=NULL; */
1319 ret->info_callback=NULL;
1321 ret->app_verify_callback=0;
1322 ret->app_verify_arg=NULL;
1324 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1326 ret->msg_callback=0;
1327 ret->msg_callback_arg=NULL;
1328 ret->verify_mode=SSL_VERIFY_NONE;
1329 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1330 ret->sid_ctx_length=0;
1331 ret->default_verify_callback=NULL;
1332 if ((ret->cert=ssl_cert_new()) == NULL)
1335 ret->default_passwd_callback=0;
1336 ret->default_passwd_callback_userdata=NULL;
1337 ret->client_cert_cb=0;
1339 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1340 LHASH_COMP_FN(SSL_SESSION_cmp));
1341 if (ret->sessions == NULL) goto err;
1342 ret->cert_store=X509_STORE_new();
1343 if (ret->cert_store == NULL) goto err;
1345 ssl_create_cipher_list(ret->method,
1346 &ret->cipher_list,&ret->cipher_list_by_id,
1347 SSL_DEFAULT_CIPHER_LIST);
1348 if (ret->cipher_list == NULL
1349 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1351 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1355 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1357 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1360 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1362 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1365 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1367 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1371 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1374 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1376 ret->extra_certs=NULL;
1377 ret->comp_methods=SSL_COMP_get_compression_methods();
1381 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1383 if (ret != NULL) SSL_CTX_free(ret);
1388 static void SSL_COMP_free(SSL_COMP *comp)
1389 { OPENSSL_free(comp); }
1392 void SSL_CTX_free(SSL_CTX *a)
1396 if (a == NULL) return;
1398 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1400 REF_PRINT("SSL_CTX",a);
1406 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1410 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1412 if (a->sessions != NULL)
1414 SSL_CTX_flush_sessions(a,0);
1415 lh_free(a->sessions);
1417 if (a->cert_store != NULL)
1418 X509_STORE_free(a->cert_store);
1419 if (a->cipher_list != NULL)
1420 sk_SSL_CIPHER_free(a->cipher_list);
1421 if (a->cipher_list_by_id != NULL)
1422 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1423 if (a->cert != NULL)
1424 ssl_cert_free(a->cert);
1425 if (a->client_CA != NULL)
1426 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1427 if (a->extra_certs != NULL)
1428 sk_X509_pop_free(a->extra_certs,X509_free);
1429 #if 0 /* This should never be done, since it removes a global database */
1430 if (a->comp_methods != NULL)
1431 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1433 a->comp_methods = NULL;
1438 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1440 ctx->default_passwd_callback=cb;
1443 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1445 ctx->default_passwd_callback_userdata=u;
1448 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1451 * int (*cb)(X509_STORE_CTX *),
1453 * int (*cb)(X509_STORE_CTX *, void *arg)
1455 ctx->app_verify_callback=cb;
1456 ctx->app_verify_arg=arg; /* never used */
1459 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1461 ctx->verify_mode=mode;
1462 ctx->default_verify_callback=cb;
1465 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1467 ctx->verify_depth=depth;
1470 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1473 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1474 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1475 int rsa_tmp_export,dh_tmp_export,kl;
1476 unsigned long mask,emask;
1478 if (c == NULL) return;
1480 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1482 #ifndef OPENSSL_NO_RSA
1483 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1484 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1485 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1487 rsa_tmp=rsa_tmp_export=0;
1489 #ifndef OPENSSL_NO_DH
1490 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1491 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1492 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1494 dh_tmp=dh_tmp_export=0;
1497 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1498 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1499 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1500 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1501 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1502 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1503 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1504 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1505 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1506 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1507 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1508 /* FIX THIS EAY EAY EAY */
1509 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1510 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1516 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1517 rsa_tmp,rsa_tmp_export,dh_tmp,
1518 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1521 if (rsa_enc || (rsa_tmp && rsa_sign))
1523 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1527 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1528 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1529 (rsa_enc || rsa_sign || dsa_sign))
1531 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1532 (rsa_enc || rsa_sign || dsa_sign))
1542 if (dh_rsa) mask|=SSL_kDHr;
1543 if (dh_rsa_export) emask|=SSL_kDHr;
1545 if (dh_dsa) mask|=SSL_kDHd;
1546 if (dh_dsa_export) emask|=SSL_kDHd;
1548 if (rsa_enc || rsa_sign)
1563 #ifndef OPENSSL_NO_KRB5
1564 mask|=SSL_kKRB5|SSL_aKRB5;
1565 emask|=SSL_kKRB5|SSL_aKRB5;
1569 c->export_mask=emask;
1573 /* THIS NEEDS CLEANING UP */
1574 X509 *ssl_get_server_send_cert(SSL *s)
1576 unsigned long alg,mask,kalg;
1581 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1582 alg=s->s3->tmp.new_cipher->algorithms;
1583 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1584 mask=is_export?c->export_mask:c->mask;
1585 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1587 if (kalg & SSL_kDHr)
1589 else if (kalg & SSL_kDHd)
1591 else if (kalg & SSL_aDSS)
1592 i=SSL_PKEY_DSA_SIGN;
1593 else if (kalg & SSL_aRSA)
1595 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1596 i=SSL_PKEY_RSA_SIGN;
1600 else if (kalg & SSL_aKRB5)
1602 /* VRS something else here? */
1605 else /* if (kalg & SSL_aNULL) */
1607 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1610 if (c->pkeys[i].x509 == NULL) return(NULL);
1611 return(c->pkeys[i].x509);
1614 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1619 alg=cipher->algorithms;
1622 if ((alg & SSL_aDSS) &&
1623 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1624 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1625 else if (alg & SSL_aRSA)
1627 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1628 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1629 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1630 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1634 else /* if (alg & SSL_aNULL) */
1636 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1641 void ssl_update_cache(SSL *s,int mode)
1645 /* If the session_id_length is 0, we are not supposed to cache it,
1646 * and it would be rather hard to do anyway :-) */
1647 if (s->session->session_id_length == 0) return;
1649 if ((s->ctx->session_cache_mode & mode)
1651 && SSL_CTX_add_session(s->ctx,s->session)
1652 && (s->ctx->new_session_cb != NULL))
1654 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1655 if (!s->ctx->new_session_cb(s,s->session))
1656 SSL_SESSION_free(s->session);
1659 /* auto flush every 255 connections */
1660 i=s->ctx->session_cache_mode;
1661 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1662 ((i & mode) == mode))
1664 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1665 ?s->ctx->stats.sess_connect_good
1666 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1668 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1673 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1678 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1683 if (s->method != meth)
1685 if (s->handshake_func != NULL)
1686 conn=(s->handshake_func == s->method->ssl_connect);
1688 if (s->method->version == meth->version)
1692 s->method->ssl_free(s);
1694 ret=s->method->ssl_new(s);
1698 s->handshake_func=meth->ssl_connect;
1700 s->handshake_func=meth->ssl_accept;
1705 int SSL_get_error(SSL *s,int i)
1711 if (i > 0) return(SSL_ERROR_NONE);
1713 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1714 * etc, where we do encode the error */
1715 if ((l=ERR_peek_error()) != 0)
1717 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1718 return(SSL_ERROR_SYSCALL);
1720 return(SSL_ERROR_SSL);
1723 if ((i < 0) && SSL_want_read(s))
1725 bio=SSL_get_rbio(s);
1726 if (BIO_should_read(bio))
1727 return(SSL_ERROR_WANT_READ);
1728 else if (BIO_should_write(bio))
1729 /* This one doesn't make too much sense ... We never try
1730 * to write to the rbio, and an application program where
1731 * rbio and wbio are separate couldn't even know what it
1733 * However if we ever set s->rwstate incorrectly
1734 * (so that we have SSL_want_read(s) instead of
1735 * SSL_want_write(s)) and rbio and wbio *are* the same,
1736 * this test works around that bug; so it might be safer
1738 return(SSL_ERROR_WANT_WRITE);
1739 else if (BIO_should_io_special(bio))
1741 reason=BIO_get_retry_reason(bio);
1742 if (reason == BIO_RR_CONNECT)
1743 return(SSL_ERROR_WANT_CONNECT);
1744 else if (reason == BIO_RR_ACCEPT)
1745 return(SSL_ERROR_WANT_ACCEPT);
1747 return(SSL_ERROR_SYSCALL); /* unknown */
1751 if ((i < 0) && SSL_want_write(s))
1753 bio=SSL_get_wbio(s);
1754 if (BIO_should_write(bio))
1755 return(SSL_ERROR_WANT_WRITE);
1756 else if (BIO_should_read(bio))
1757 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1758 return(SSL_ERROR_WANT_READ);
1759 else if (BIO_should_io_special(bio))
1761 reason=BIO_get_retry_reason(bio);
1762 if (reason == BIO_RR_CONNECT)
1763 return(SSL_ERROR_WANT_CONNECT);
1764 else if (reason == BIO_RR_ACCEPT)
1765 return(SSL_ERROR_WANT_ACCEPT);
1767 return(SSL_ERROR_SYSCALL);
1770 if ((i < 0) && SSL_want_x509_lookup(s))
1772 return(SSL_ERROR_WANT_X509_LOOKUP);
1777 if (s->version == SSL2_VERSION)
1779 /* assume it is the socket being closed */
1780 return(SSL_ERROR_ZERO_RETURN);
1784 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1785 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1786 return(SSL_ERROR_ZERO_RETURN);
1789 return(SSL_ERROR_SYSCALL);
1792 int SSL_do_handshake(SSL *s)
1796 if (s->handshake_func == NULL)
1798 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1802 s->method->ssl_renegotiate_check(s);
1804 if (SSL_in_init(s) || SSL_in_before(s))
1806 ret=s->handshake_func(s);
1811 /* For the next 2 functions, SSL_clear() sets shutdown and so
1812 * one of these calls will reset it */
1813 void SSL_set_accept_state(SSL *s)
1817 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1818 s->handshake_func=s->method->ssl_accept;
1819 /* clear the current cipher */
1820 ssl_clear_cipher_ctx(s);
1823 void SSL_set_connect_state(SSL *s)
1827 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1828 s->handshake_func=s->method->ssl_connect;
1829 /* clear the current cipher */
1830 ssl_clear_cipher_ctx(s);
1833 int ssl_undefined_function(SSL *s)
1835 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1839 SSL_METHOD *ssl_bad_method(int ver)
1841 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1845 const char *SSL_get_version(SSL *s)
1847 if (s->version == TLS1_VERSION)
1849 else if (s->version == SSL3_VERSION)
1851 else if (s->version == SSL2_VERSION)
1857 SSL *SSL_dup(SSL *s)
1859 STACK_OF(X509_NAME) *sk;
1864 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1867 ret->version = s->version;
1868 ret->type = s->type;
1869 ret->method = s->method;
1871 if (s->session != NULL)
1873 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1874 SSL_copy_session_id(ret,s);
1878 /* No session has been established yet, so we have to expect
1879 * that s->cert or ret->cert will be changed later --
1880 * they should not both point to the same object,
1881 * and thus we can't use SSL_copy_session_id. */
1883 ret->method = s->method;
1884 ret->method->ssl_new(ret);
1886 if (s->cert != NULL)
1888 if (ret->cert != NULL)
1890 ssl_cert_free(ret->cert);
1892 ret->cert = ssl_cert_dup(s->cert);
1893 if (ret->cert == NULL)
1897 SSL_set_session_id_context(ret,
1898 s->sid_ctx, s->sid_ctx_length);
1901 ret->options=s->options;
1903 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
1904 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1905 ret->msg_callback = s->msg_callback;
1906 ret->msg_callback_arg = s->msg_callback_arg;
1907 SSL_set_verify(ret,SSL_get_verify_mode(s),
1908 SSL_get_verify_callback(s));
1909 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1910 ret->generate_session_id = s->generate_session_id;
1912 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1914 ret->debug=s->debug;
1916 /* copy app data, a little dangerous perhaps */
1917 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
1920 /* setup rbio, and wbio */
1921 if (s->rbio != NULL)
1923 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1926 if (s->wbio != NULL)
1928 if (s->wbio != s->rbio)
1930 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1934 ret->wbio=ret->rbio;
1936 ret->rwstate = s->rwstate;
1937 ret->in_handshake = s->in_handshake;
1938 ret->handshake_func = s->handshake_func;
1939 ret->server = s->server;
1940 ret->new_session = s->new_session;
1941 ret->quiet_shutdown = s->quiet_shutdown;
1942 ret->shutdown=s->shutdown;
1943 ret->state=s->state; /* SSL_dup does not really work at any state, though */
1944 ret->rstate=s->rstate;
1945 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
1947 ret->purpose=s->purpose;
1948 ret->trust=s->trust;
1950 /* dup the cipher_list and cipher_list_by_id stacks */
1951 if (s->cipher_list != NULL)
1953 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1956 if (s->cipher_list_by_id != NULL)
1957 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1961 /* Dup the client_CA list */
1962 if (s->client_CA != NULL)
1964 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1966 for (i=0; i<sk_X509_NAME_num(sk); i++)
1968 xn=sk_X509_NAME_value(sk,i);
1969 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1980 if (ret != NULL) SSL_free(ret);
1986 void ssl_clear_cipher_ctx(SSL *s)
1988 if (s->enc_read_ctx != NULL)
1990 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1991 OPENSSL_free(s->enc_read_ctx);
1992 s->enc_read_ctx=NULL;
1994 if (s->enc_write_ctx != NULL)
1996 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1997 OPENSSL_free(s->enc_write_ctx);
1998 s->enc_write_ctx=NULL;
2000 if (s->expand != NULL)
2002 COMP_CTX_free(s->expand);
2005 if (s->compress != NULL)
2007 COMP_CTX_free(s->compress);
2012 /* Fix this function so that it takes an optional type parameter */
2013 X509 *SSL_get_certificate(SSL *s)
2015 if (s->cert != NULL)
2016 return(s->cert->key->x509);
2021 /* Fix this function so that it takes an optional type parameter */
2022 EVP_PKEY *SSL_get_privatekey(SSL *s)
2024 if (s->cert != NULL)
2025 return(s->cert->key->privatekey);
2030 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
2032 if ((s->session != NULL) && (s->session->cipher != NULL))
2033 return(s->session->cipher);
2037 int ssl_init_wbio_buffer(SSL *s,int push)
2041 if (s->bbio == NULL)
2043 bbio=BIO_new(BIO_f_buffer());
2044 if (bbio == NULL) return(0);
2050 if (s->bbio == s->wbio)
2051 s->wbio=BIO_pop(s->wbio);
2053 (void)BIO_reset(bbio);
2054 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2055 if (!BIO_set_read_buffer_size(bbio,1))
2057 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2062 if (s->wbio != bbio)
2063 s->wbio=BIO_push(bbio,s->wbio);
2067 if (s->wbio == bbio)
2068 s->wbio=BIO_pop(bbio);
2073 void ssl_free_wbio_buffer(SSL *s)
2075 if (s->bbio == NULL) return;
2077 if (s->bbio == s->wbio)
2079 /* remove buffering */
2080 s->wbio=BIO_pop(s->wbio);
2081 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2082 assert(s->wbio != NULL);
2089 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2091 ctx->quiet_shutdown=mode;
2094 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
2096 return(ctx->quiet_shutdown);
2099 void SSL_set_quiet_shutdown(SSL *s,int mode)
2101 s->quiet_shutdown=mode;
2104 int SSL_get_quiet_shutdown(SSL *s)
2106 return(s->quiet_shutdown);
2109 void SSL_set_shutdown(SSL *s,int mode)
2114 int SSL_get_shutdown(SSL *s)
2116 return(s->shutdown);
2119 int SSL_version(SSL *s)
2124 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2129 #ifndef OPENSSL_NO_STDIO
2130 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2132 return(X509_STORE_set_default_paths(ctx->cert_store));
2135 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2138 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2142 void SSL_set_info_callback(SSL *ssl,
2143 void (*cb)(const SSL *ssl,int type,int val))
2145 ssl->info_callback=cb;
2148 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
2150 return ssl->info_callback;
2153 int SSL_state(SSL *ssl)
2158 void SSL_set_verify_result(SSL *ssl,long arg)
2160 ssl->verify_result=arg;
2163 long SSL_get_verify_result(SSL *ssl)
2165 return(ssl->verify_result);
2168 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2169 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2171 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2172 new_func, dup_func, free_func);
2175 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2177 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2180 void *SSL_get_ex_data(SSL *s,int idx)
2182 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2185 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2186 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2188 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2189 new_func, dup_func, free_func);
2192 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2194 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2197 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2199 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2207 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2209 return(ctx->cert_store);
2212 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2214 if (ctx->cert_store != NULL)
2215 X509_STORE_free(ctx->cert_store);
2216 ctx->cert_store=store;
2219 int SSL_want(SSL *s)
2225 * \brief Set the callback for generating temporary RSA keys.
2226 * \param ctx the SSL context.
2227 * \param cb the callback
2230 #ifndef OPENSSL_NO_RSA
2231 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2235 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2238 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2242 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2248 * \brief The RSA temporary key callback function.
2249 * \param ssl the SSL session.
2250 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2251 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2252 * of the required key in bits.
2253 * \return the temporary RSA key.
2254 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2257 RSA *cb(SSL *ssl,int is_export,int keylength)
2262 * \brief Set the callback for generating temporary DH keys.
2263 * \param ctx the SSL context.
2264 * \param dh the callback
2267 #ifndef OPENSSL_NO_DH
2268 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2271 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2274 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2277 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2282 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2284 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2286 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2288 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2293 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2294 #include "../crypto/bio/bss_file.c"
2297 IMPLEMENT_STACK_OF(SSL_CIPHER)
2298 IMPLEMENT_STACK_OF(SSL_COMP)