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 "ssl_locl.h"
120 #include "kssl_lcl.h"
121 #include <openssl/objects.h>
122 #include <openssl/lhash.h>
123 #include <openssl/x509v3.h>
124 #include "cryptlib.h"
126 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
128 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
129 /* evil casts, but these functions are only called if there's a library bug */
130 (int (*)(SSL *,int))ssl_undefined_function,
131 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
132 ssl_undefined_function,
133 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
134 (int (*)(SSL*, int))ssl_undefined_function,
135 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
138 int SSL_clear(SSL *s)
141 if (s->method == NULL)
143 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
147 if (ssl_clear_bad_session(s))
149 SSL_SESSION_free(s->session);
157 #if 0 /* Disabled since version 1.10 of this file (early return not
158 * needed because SSL_clear is not called when doing renegotiation) */
159 /* This is set if we are doing dynamic renegotiation so keep
160 * the old cipher. It is sort of a SSL_clear_lite :-) */
161 if (s->new_session) return(1);
165 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
172 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
174 s->version=s->method->version;
175 s->client_version=s->version;
176 s->rwstate=SSL_NOTHING;
177 s->rstate=SSL_ST_READ_HEADER;
179 s->read_ahead=s->ctx->read_ahead;
182 if (s->init_buf != NULL)
184 BUF_MEM_free(s->init_buf);
188 ssl_clear_cipher_ctx(s);
193 /* Check to see if we were changed into a different method, if
194 * so, revert back if we are not doing session-id reuse. */
195 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
197 s->method->ssl_free(s);
198 s->method=s->ctx->method;
199 if (!s->method->ssl_new(s))
204 s->method->ssl_clear(s);
208 /** Used to change an SSL_CTXs default SSL method type */
209 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
211 STACK_OF(SSL_CIPHER) *sk;
215 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
216 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
217 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
219 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
225 SSL *SSL_new(SSL_CTX *ctx)
231 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
234 if (ctx->method == NULL)
236 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
240 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
241 if (s == NULL) goto err;
242 memset(s,0,sizeof(SSL));
244 #ifndef OPENSSL_NO_KRB5
245 s->kssl_ctx = kssl_ctx_new();
246 #endif /* OPENSSL_NO_KRB5 */
248 s->options=ctx->options;
250 s->max_cert_list=ctx->max_cert_list;
252 if (ctx->cert != NULL)
254 /* Earlier library versions used to copy the pointer to
255 * the CERT, not its contents; only when setting new
256 * parameters for the per-SSL copy, ssl_cert_new would be
257 * called (and the direct reference to the per-SSL_CTX
258 * settings would be lost, but those still were indirectly
259 * accessed for various purposes, and for that reason they
260 * used to be known as s->ctx->default_cert).
261 * Now we don't look at the SSL_CTX's CERT after having
262 * duplicated it once. */
264 s->cert = ssl_cert_dup(ctx->cert);
269 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
271 s->read_ahead=ctx->read_ahead;
272 s->msg_callback=ctx->msg_callback;
273 s->msg_callback_arg=ctx->msg_callback_arg;
274 s->verify_mode=ctx->verify_mode;
275 s->verify_depth=ctx->verify_depth;
276 s->sid_ctx_length=ctx->sid_ctx_length;
277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
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 > sizeof ctx->sid_ctx)
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. */
370 if(id_len > sizeof r.session_id)
373 r.ssl_version = ssl->version;
374 r.session_id_length = id_len;
375 memcpy(r.session_id, id, id_len);
376 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
377 * callback is calling us to check the uniqueness of a shorter ID, it
378 * must be compared as a padded-out ID because that is what it will be
379 * converted to when the callback has finished choosing it. */
380 if((r.ssl_version == SSL2_VERSION) &&
381 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
383 memset(r.session_id + id_len, 0,
384 SSL2_SSL_SESSION_ID_LENGTH - id_len);
385 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
388 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
389 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
390 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
394 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
396 return X509_PURPOSE_set(&s->purpose, purpose);
399 int SSL_set_purpose(SSL *s, int purpose)
401 return X509_PURPOSE_set(&s->purpose, purpose);
404 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
406 return X509_TRUST_set(&s->trust, trust);
409 int SSL_set_trust(SSL *s, int trust)
411 return X509_TRUST_set(&s->trust, trust);
414 void SSL_free(SSL *s)
421 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
429 fprintf(stderr,"SSL_free, bad reference count\n");
434 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
438 /* If the buffering BIO is in place, pop it off */
439 if (s->bbio == s->wbio)
441 s->wbio=BIO_pop(s->wbio);
447 BIO_free_all(s->rbio);
448 if ((s->wbio != NULL) && (s->wbio != s->rbio))
449 BIO_free_all(s->wbio);
451 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
453 /* add extra stuff */
454 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
455 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
457 /* Make the next call work :-) */
458 if (s->session != NULL)
460 ssl_clear_bad_session(s);
461 SSL_SESSION_free(s->session);
464 ssl_clear_cipher_ctx(s);
466 if (s->cert != NULL) ssl_cert_free(s->cert);
467 /* Free up if allocated */
469 if (s->ctx) SSL_CTX_free(s->ctx);
471 if (s->client_CA != NULL)
472 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
474 if (s->method != NULL) s->method->ssl_free(s);
479 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
481 /* If the output buffering BIO is still in place, remove it
485 if (s->wbio == s->bbio)
487 s->wbio=s->wbio->next_bio;
488 s->bbio->next_bio=NULL;
491 if ((s->rbio != NULL) && (s->rbio != rbio))
492 BIO_free_all(s->rbio);
493 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
494 BIO_free_all(s->wbio);
499 BIO *SSL_get_rbio(SSL *s)
502 BIO *SSL_get_wbio(SSL *s)
505 int SSL_get_fd(SSL *s)
507 return(SSL_get_rfd(s));
510 int SSL_get_rfd(SSL *s)
516 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
522 int SSL_get_wfd(SSL *s)
528 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
534 #ifndef OPENSSL_NO_SOCK
535 int SSL_set_fd(SSL *s,int fd)
540 bio=BIO_new(BIO_s_socket());
544 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
547 BIO_set_fd(bio,fd,BIO_NOCLOSE);
548 SSL_set_bio(s,bio,bio);
554 int SSL_set_wfd(SSL *s,int fd)
559 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
560 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
562 bio=BIO_new(BIO_s_socket());
565 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
566 BIO_set_fd(bio,fd,BIO_NOCLOSE);
567 SSL_set_bio(s,SSL_get_rbio(s),bio);
570 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
576 int SSL_set_rfd(SSL *s,int fd)
581 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
582 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
584 bio=BIO_new(BIO_s_socket());
588 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
591 BIO_set_fd(bio,fd,BIO_NOCLOSE);
592 SSL_set_bio(s,bio,SSL_get_wbio(s));
595 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
603 /* return length of latest Finished message we sent, copy to 'buf' */
604 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
610 ret = s->s3->tmp.finish_md_len;
613 memcpy(buf, s->s3->tmp.finish_md, count);
618 /* return length of latest Finished message we expected, copy to 'buf' */
619 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
625 ret = s->s3->tmp.peer_finish_md_len;
628 memcpy(buf, s->s3->tmp.peer_finish_md, count);
634 int SSL_get_verify_mode(SSL *s)
636 return(s->verify_mode);
639 int SSL_get_verify_depth(SSL *s)
641 return(s->verify_depth);
644 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
646 return(s->verify_callback);
649 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
651 return(ctx->verify_mode);
654 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
656 return(ctx->verify_depth);
659 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
661 return(ctx->default_verify_callback);
664 void SSL_set_verify(SSL *s,int mode,
665 int (*callback)(int ok,X509_STORE_CTX *ctx))
668 if (callback != NULL)
669 s->verify_callback=callback;
672 void SSL_set_verify_depth(SSL *s,int depth)
674 s->verify_depth=depth;
677 void SSL_set_read_ahead(SSL *s,int yes)
682 int SSL_get_read_ahead(SSL *s)
684 return(s->read_ahead);
687 int SSL_pending(SSL *s)
689 /* SSL_pending cannot work properly if read-ahead is enabled
690 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
691 * and it is impossible to fix since SSL_pending cannot report
692 * errors that may be observed while scanning the new data.
693 * (Note that SSL_pending() is often used as a boolean value,
694 * so we'd better not return -1.)
696 return(s->method->ssl_pending(s));
699 X509 *SSL_get_peer_certificate(SSL *s)
703 if ((s == NULL) || (s->session == NULL))
708 if (r == NULL) return(r);
710 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
715 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
719 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
722 r=s->session->sess_cert->cert_chain;
724 /* If we are a client, cert_chain includes the peer's own
725 * certificate; if we are a server, it does not. */
730 /* Now in theory, since the calling process own 't' it should be safe to
731 * modify. We need to be able to read f without being hassled */
732 void SSL_copy_session_id(SSL *t,SSL *f)
736 /* Do we need to to SSL locking? */
737 SSL_set_session(t,SSL_get_session(f));
739 /* what if we are setup as SSLv2 but want to talk SSLv3 or
741 if (t->method != f->method)
743 t->method->ssl_free(t); /* cleanup current */
744 t->method=f->method; /* change method */
745 t->method->ssl_new(t); /* setup new */
751 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
756 if (tmp != NULL) ssl_cert_free(tmp);
757 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
760 /* Fix this so it checks all the valid key/cert options */
761 int SSL_CTX_check_private_key(SSL_CTX *ctx)
763 if ( (ctx == NULL) ||
764 (ctx->cert == NULL) ||
765 (ctx->cert->key->x509 == NULL))
767 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
770 if (ctx->cert->key->privatekey == NULL)
772 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
775 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
778 /* Fix this function so that it takes an optional type parameter */
779 int SSL_check_private_key(SSL *ssl)
783 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
786 if (ssl->cert == NULL)
788 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
791 if (ssl->cert->key->x509 == NULL)
793 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
796 if (ssl->cert->key->privatekey == NULL)
798 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
801 return(X509_check_private_key(ssl->cert->key->x509,
802 ssl->cert->key->privatekey));
805 int SSL_accept(SSL *s)
807 if (s->handshake_func == 0)
808 /* Not properly initialized yet */
809 SSL_set_accept_state(s);
811 return(s->method->ssl_accept(s));
814 int SSL_connect(SSL *s)
816 if (s->handshake_func == 0)
817 /* Not properly initialized yet */
818 SSL_set_connect_state(s);
820 return(s->method->ssl_connect(s));
823 long SSL_get_default_timeout(SSL *s)
825 return(s->method->get_timeout());
828 int SSL_read(SSL *s,void *buf,int num)
830 if (s->handshake_func == 0)
832 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
836 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
838 s->rwstate=SSL_NOTHING;
841 return(s->method->ssl_read(s,buf,num));
844 int SSL_peek(SSL *s,void *buf,int num)
846 if (s->handshake_func == 0)
848 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
852 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
856 return(s->method->ssl_peek(s,buf,num));
859 int SSL_write(SSL *s,const void *buf,int num)
861 if (s->handshake_func == 0)
863 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
867 if (s->shutdown & SSL_SENT_SHUTDOWN)
869 s->rwstate=SSL_NOTHING;
870 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
873 return(s->method->ssl_write(s,buf,num));
876 int SSL_shutdown(SSL *s)
878 /* Note that this function behaves differently from what one might
879 * expect. Return values are 0 for no success (yet),
880 * 1 for success; but calling it once is usually not enough,
881 * even if blocking I/O is used (see ssl3_shutdown).
884 if (s->handshake_func == 0)
886 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
890 if ((s != NULL) && !SSL_in_init(s))
891 return(s->method->ssl_shutdown(s));
896 int SSL_renegotiate(SSL *s)
898 if (s->new_session == 0)
902 return(s->method->ssl_renegotiate(s));
905 int SSL_renegotiate_pending(SSL *s)
907 /* becomes true when negotiation is requested;
908 * false again once a handshake has finished */
909 return (s->new_session != 0);
912 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
918 case SSL_CTRL_GET_READ_AHEAD:
919 return(s->read_ahead);
920 case SSL_CTRL_SET_READ_AHEAD:
925 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
926 s->msg_callback_arg = parg;
929 case SSL_CTRL_OPTIONS:
930 return(s->options|=larg);
932 return(s->mode|=larg);
933 case SSL_CTRL_GET_MAX_CERT_LIST:
934 return(s->max_cert_list);
935 case SSL_CTRL_SET_MAX_CERT_LIST:
937 s->max_cert_list=larg;
940 return(s->method->ssl_ctrl(s,cmd,larg,parg));
944 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
948 case SSL_CTRL_SET_MSG_CALLBACK:
949 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
953 return(s->method->ssl_callback_ctrl(s,cmd,fp));
957 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
959 return ctx->sessions;
962 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
968 case SSL_CTRL_GET_READ_AHEAD:
969 return(ctx->read_ahead);
970 case SSL_CTRL_SET_READ_AHEAD:
972 ctx->read_ahead=larg;
975 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
976 ctx->msg_callback_arg = parg;
979 case SSL_CTRL_GET_MAX_CERT_LIST:
980 return(ctx->max_cert_list);
981 case SSL_CTRL_SET_MAX_CERT_LIST:
982 l=ctx->max_cert_list;
983 ctx->max_cert_list=larg;
986 case SSL_CTRL_SET_SESS_CACHE_SIZE:
987 l=ctx->session_cache_size;
988 ctx->session_cache_size=larg;
990 case SSL_CTRL_GET_SESS_CACHE_SIZE:
991 return(ctx->session_cache_size);
992 case SSL_CTRL_SET_SESS_CACHE_MODE:
993 l=ctx->session_cache_mode;
994 ctx->session_cache_mode=larg;
996 case SSL_CTRL_GET_SESS_CACHE_MODE:
997 return(ctx->session_cache_mode);
999 case SSL_CTRL_SESS_NUMBER:
1000 return(ctx->sessions->num_items);
1001 case SSL_CTRL_SESS_CONNECT:
1002 return(ctx->stats.sess_connect);
1003 case SSL_CTRL_SESS_CONNECT_GOOD:
1004 return(ctx->stats.sess_connect_good);
1005 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1006 return(ctx->stats.sess_connect_renegotiate);
1007 case SSL_CTRL_SESS_ACCEPT:
1008 return(ctx->stats.sess_accept);
1009 case SSL_CTRL_SESS_ACCEPT_GOOD:
1010 return(ctx->stats.sess_accept_good);
1011 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1012 return(ctx->stats.sess_accept_renegotiate);
1013 case SSL_CTRL_SESS_HIT:
1014 return(ctx->stats.sess_hit);
1015 case SSL_CTRL_SESS_CB_HIT:
1016 return(ctx->stats.sess_cb_hit);
1017 case SSL_CTRL_SESS_MISSES:
1018 return(ctx->stats.sess_miss);
1019 case SSL_CTRL_SESS_TIMEOUTS:
1020 return(ctx->stats.sess_timeout);
1021 case SSL_CTRL_SESS_CACHE_FULL:
1022 return(ctx->stats.sess_cache_full);
1023 case SSL_CTRL_OPTIONS:
1024 return(ctx->options|=larg);
1026 return(ctx->mode|=larg);
1028 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1032 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1036 case SSL_CTRL_SET_MSG_CALLBACK:
1037 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1041 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1045 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1053 return((l > 0)?1:-1);
1056 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1057 const SSL_CIPHER * const *bp)
1061 l=(*ap)->id-(*bp)->id;
1065 return((l > 0)?1:-1);
1068 /** return a STACK of the ciphers available for the SSL and in order of
1070 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
1072 if ((s != NULL) && (s->cipher_list != NULL))
1074 return(s->cipher_list);
1076 else if ((s->ctx != NULL) &&
1077 (s->ctx->cipher_list != NULL))
1079 return(s->ctx->cipher_list);
1084 /** return a STACK of the ciphers available for the SSL and in order of
1086 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1088 if ((s != NULL) && (s->cipher_list_by_id != NULL))
1090 return(s->cipher_list_by_id);
1092 else if ((s != NULL) && (s->ctx != NULL) &&
1093 (s->ctx->cipher_list_by_id != NULL))
1095 return(s->ctx->cipher_list_by_id);
1100 /** The old interface to get the same thing as SSL_get_ciphers() */
1101 const char *SSL_get_cipher_list(SSL *s,int n)
1104 STACK_OF(SSL_CIPHER) *sk;
1106 if (s == NULL) return(NULL);
1107 sk=SSL_get_ciphers(s);
1108 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1110 c=sk_SSL_CIPHER_value(sk,n);
1111 if (c == NULL) return(NULL);
1115 /** specify the ciphers to be used by default by the SSL_CTX */
1116 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1118 STACK_OF(SSL_CIPHER) *sk;
1120 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1121 &ctx->cipher_list_by_id,str);
1123 return((sk == NULL)?0:1);
1126 /** specify the ciphers to be used by the SSL */
1127 int SSL_set_cipher_list(SSL *s,const char *str)
1129 STACK_OF(SSL_CIPHER) *sk;
1131 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1132 &s->cipher_list_by_id,str);
1134 return((sk == NULL)?0:1);
1137 /* works well for SSLv2, not so good for SSLv3 */
1138 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1142 STACK_OF(SSL_CIPHER) *sk;
1146 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1151 sk=s->session->ciphers;
1152 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1154 /* Decrement for either the ':' or a '\0' */
1156 c=sk_SSL_CIPHER_value(sk,i);
1157 for (cp=c->name; *cp; )
1173 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1178 #ifndef OPENSSL_NO_KRB5
1179 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1180 #endif /* OPENSSL_NO_KRB5 */
1182 if (sk == NULL) return(0);
1185 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1187 c=sk_SSL_CIPHER_value(sk,i);
1188 #ifndef OPENSSL_NO_KRB5
1189 if ((c->algorithms & SSL_KRB5) && nokrb5)
1191 #endif /* OPENSSL_NO_KRB5 */
1192 j=ssl_put_cipher_by_char(s,c,p);
1198 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1199 STACK_OF(SSL_CIPHER) **skp)
1202 STACK_OF(SSL_CIPHER) *sk;
1205 n=ssl_put_cipher_by_char(s,NULL,NULL);
1208 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1211 if ((skp == NULL) || (*skp == NULL))
1212 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1216 sk_SSL_CIPHER_zero(sk);
1219 for (i=0; i<num; i+=n)
1221 c=ssl_get_cipher_by_char(s,p);
1225 if (!sk_SSL_CIPHER_push(sk,c))
1227 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1237 if ((skp == NULL) || (*skp == NULL))
1238 sk_SSL_CIPHER_free(sk);
1242 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1247 ((unsigned int) a->session_id[0] )|
1248 ((unsigned int) a->session_id[1]<< 8L)|
1249 ((unsigned long)a->session_id[2]<<16L)|
1250 ((unsigned long)a->session_id[3]<<24L);
1254 /* NB: If this function (or indeed the hash function which uses a sort of
1255 * coarser function than this one) is changed, ensure
1256 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1257 * able to construct an SSL_SESSION that will collide with any existing session
1258 * with a matching session ID. */
1259 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1261 if (a->ssl_version != b->ssl_version)
1263 if (a->session_id_length != b->session_id_length)
1265 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1268 /* These wrapper functions should remain rather than redeclaring
1269 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1270 * variable. The reason is that the functions aren't static, they're exposed via
1272 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1273 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1275 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1281 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1285 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1287 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1290 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1294 memset(ret,0,sizeof(SSL_CTX));
1298 ret->cert_store=NULL;
1299 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1300 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1301 ret->session_cache_head=NULL;
1302 ret->session_cache_tail=NULL;
1304 /* We take the system default */
1305 ret->session_timeout=meth->get_timeout();
1307 ret->new_session_cb=0;
1308 ret->remove_session_cb=0;
1309 ret->get_session_cb=0;
1310 ret->generate_session_id=0;
1312 memset((char *)&ret->stats,0,sizeof(ret->stats));
1315 ret->quiet_shutdown=0;
1317 /* ret->cipher=NULL;*/
1318 /* ret->s2->challenge=NULL;
1319 ret->master_key=NULL;
1321 ret->s2->conn_id=NULL; */
1323 ret->info_callback=NULL;
1325 ret->app_verify_callback=0;
1326 ret->app_verify_arg=NULL;
1328 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1330 ret->msg_callback=0;
1331 ret->msg_callback_arg=NULL;
1332 ret->verify_mode=SSL_VERIFY_NONE;
1333 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1334 ret->sid_ctx_length=0;
1335 ret->default_verify_callback=NULL;
1336 if ((ret->cert=ssl_cert_new()) == NULL)
1339 ret->default_passwd_callback=0;
1340 ret->default_passwd_callback_userdata=NULL;
1341 ret->client_cert_cb=0;
1343 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1344 LHASH_COMP_FN(SSL_SESSION_cmp));
1345 if (ret->sessions == NULL) goto err;
1346 ret->cert_store=X509_STORE_new();
1347 if (ret->cert_store == NULL) goto err;
1349 ssl_create_cipher_list(ret->method,
1350 &ret->cipher_list,&ret->cipher_list_by_id,
1351 SSL_DEFAULT_CIPHER_LIST);
1352 if (ret->cipher_list == NULL
1353 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1355 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1359 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1361 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1364 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1366 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1369 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1371 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1375 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1378 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1380 ret->extra_certs=NULL;
1381 ret->comp_methods=SSL_COMP_get_compression_methods();
1385 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1387 if (ret != NULL) SSL_CTX_free(ret);
1392 static void SSL_COMP_free(SSL_COMP *comp)
1393 { OPENSSL_free(comp); }
1396 void SSL_CTX_free(SSL_CTX *a)
1400 if (a == NULL) return;
1402 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1404 REF_PRINT("SSL_CTX",a);
1410 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1416 * Free internal session cache. However: the remove_cb() may reference
1417 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1418 * after the sessions were flushed.
1419 * As the ex_data handling routines might also touch the session cache,
1420 * the most secure solution seems to be: empty (flush) the cache, then
1421 * free ex_data, then finally free the cache.
1422 * (See ticket [openssl.org #212].)
1424 if (a->sessions != NULL)
1425 SSL_CTX_flush_sessions(a,0);
1427 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1429 if (a->sessions != NULL)
1430 lh_free(a->sessions);
1432 if (a->cert_store != NULL)
1433 X509_STORE_free(a->cert_store);
1434 if (a->cipher_list != NULL)
1435 sk_SSL_CIPHER_free(a->cipher_list);
1436 if (a->cipher_list_by_id != NULL)
1437 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1438 if (a->cert != NULL)
1439 ssl_cert_free(a->cert);
1440 if (a->client_CA != NULL)
1441 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1442 if (a->extra_certs != NULL)
1443 sk_X509_pop_free(a->extra_certs,X509_free);
1444 #if 0 /* This should never be done, since it removes a global database */
1445 if (a->comp_methods != NULL)
1446 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1448 a->comp_methods = NULL;
1453 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1455 ctx->default_passwd_callback=cb;
1458 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1460 ctx->default_passwd_callback_userdata=u;
1463 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1465 ctx->app_verify_callback=cb;
1466 ctx->app_verify_arg=arg;
1469 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1471 ctx->verify_mode=mode;
1472 ctx->default_verify_callback=cb;
1475 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1477 ctx->verify_depth=depth;
1480 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1483 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1484 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1485 int rsa_tmp_export,dh_tmp_export,kl;
1486 unsigned long mask,emask;
1488 if (c == NULL) return;
1490 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1492 #ifndef OPENSSL_NO_RSA
1493 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1494 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1495 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1497 rsa_tmp=rsa_tmp_export=0;
1499 #ifndef OPENSSL_NO_DH
1500 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1501 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1502 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1504 dh_tmp=dh_tmp_export=0;
1507 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1508 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1509 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1510 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1511 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1512 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1513 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1514 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1515 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1516 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1517 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1518 /* FIX THIS EAY EAY EAY */
1519 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1520 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1526 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1527 rsa_tmp,rsa_tmp_export,dh_tmp,
1528 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1531 if (rsa_enc || (rsa_tmp && rsa_sign))
1533 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1537 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1538 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1539 (rsa_enc || rsa_sign || dsa_sign))
1541 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1542 (rsa_enc || rsa_sign || dsa_sign))
1552 if (dh_rsa) mask|=SSL_kDHr;
1553 if (dh_rsa_export) emask|=SSL_kDHr;
1555 if (dh_dsa) mask|=SSL_kDHd;
1556 if (dh_dsa_export) emask|=SSL_kDHd;
1558 if (rsa_enc || rsa_sign)
1573 #ifndef OPENSSL_NO_KRB5
1574 mask|=SSL_kKRB5|SSL_aKRB5;
1575 emask|=SSL_kKRB5|SSL_aKRB5;
1579 c->export_mask=emask;
1583 /* THIS NEEDS CLEANING UP */
1584 X509 *ssl_get_server_send_cert(SSL *s)
1586 unsigned long alg,mask,kalg;
1591 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1592 alg=s->s3->tmp.new_cipher->algorithms;
1593 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1594 mask=is_export?c->export_mask:c->mask;
1595 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1597 if (kalg & SSL_kDHr)
1599 else if (kalg & SSL_kDHd)
1601 else if (kalg & SSL_aDSS)
1602 i=SSL_PKEY_DSA_SIGN;
1603 else if (kalg & SSL_aRSA)
1605 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1606 i=SSL_PKEY_RSA_SIGN;
1610 else if (kalg & SSL_aKRB5)
1612 /* VRS something else here? */
1615 else /* if (kalg & SSL_aNULL) */
1617 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1620 if (c->pkeys[i].x509 == NULL) return(NULL);
1621 return(c->pkeys[i].x509);
1624 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1629 alg=cipher->algorithms;
1632 if ((alg & SSL_aDSS) &&
1633 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1634 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1635 else if (alg & SSL_aRSA)
1637 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1638 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1639 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1640 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1644 else /* if (alg & SSL_aNULL) */
1646 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1651 void ssl_update_cache(SSL *s,int mode)
1655 /* If the session_id_length is 0, we are not supposed to cache it,
1656 * and it would be rather hard to do anyway :-) */
1657 if (s->session->session_id_length == 0) return;
1659 i=s->ctx->session_cache_mode;
1660 if ((i & mode) && (!s->hit)
1661 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
1662 || SSL_CTX_add_session(s->ctx,s->session))
1663 && (s->ctx->new_session_cb != NULL))
1665 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1666 if (!s->ctx->new_session_cb(s,s->session))
1667 SSL_SESSION_free(s->session);
1670 /* auto flush every 255 connections */
1671 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1672 ((i & mode) == mode))
1674 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1675 ?s->ctx->stats.sess_connect_good
1676 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1678 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1683 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1688 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1693 if (s->method != meth)
1695 if (s->handshake_func != NULL)
1696 conn=(s->handshake_func == s->method->ssl_connect);
1698 if (s->method->version == meth->version)
1702 s->method->ssl_free(s);
1704 ret=s->method->ssl_new(s);
1708 s->handshake_func=meth->ssl_connect;
1710 s->handshake_func=meth->ssl_accept;
1715 int SSL_get_error(SSL *s,int i)
1721 if (i > 0) return(SSL_ERROR_NONE);
1723 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1724 * etc, where we do encode the error */
1725 if ((l=ERR_peek_error()) != 0)
1727 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1728 return(SSL_ERROR_SYSCALL);
1730 return(SSL_ERROR_SSL);
1733 if ((i < 0) && SSL_want_read(s))
1735 bio=SSL_get_rbio(s);
1736 if (BIO_should_read(bio))
1737 return(SSL_ERROR_WANT_READ);
1738 else if (BIO_should_write(bio))
1739 /* This one doesn't make too much sense ... We never try
1740 * to write to the rbio, and an application program where
1741 * rbio and wbio are separate couldn't even know what it
1743 * However if we ever set s->rwstate incorrectly
1744 * (so that we have SSL_want_read(s) instead of
1745 * SSL_want_write(s)) and rbio and wbio *are* the same,
1746 * this test works around that bug; so it might be safer
1748 return(SSL_ERROR_WANT_WRITE);
1749 else if (BIO_should_io_special(bio))
1751 reason=BIO_get_retry_reason(bio);
1752 if (reason == BIO_RR_CONNECT)
1753 return(SSL_ERROR_WANT_CONNECT);
1754 else if (reason == BIO_RR_ACCEPT)
1755 return(SSL_ERROR_WANT_ACCEPT);
1757 return(SSL_ERROR_SYSCALL); /* unknown */
1761 if ((i < 0) && SSL_want_write(s))
1763 bio=SSL_get_wbio(s);
1764 if (BIO_should_write(bio))
1765 return(SSL_ERROR_WANT_WRITE);
1766 else if (BIO_should_read(bio))
1767 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1768 return(SSL_ERROR_WANT_READ);
1769 else if (BIO_should_io_special(bio))
1771 reason=BIO_get_retry_reason(bio);
1772 if (reason == BIO_RR_CONNECT)
1773 return(SSL_ERROR_WANT_CONNECT);
1774 else if (reason == BIO_RR_ACCEPT)
1775 return(SSL_ERROR_WANT_ACCEPT);
1777 return(SSL_ERROR_SYSCALL);
1780 if ((i < 0) && SSL_want_x509_lookup(s))
1782 return(SSL_ERROR_WANT_X509_LOOKUP);
1787 if (s->version == SSL2_VERSION)
1789 /* assume it is the socket being closed */
1790 return(SSL_ERROR_ZERO_RETURN);
1794 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1795 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1796 return(SSL_ERROR_ZERO_RETURN);
1799 return(SSL_ERROR_SYSCALL);
1802 int SSL_do_handshake(SSL *s)
1806 if (s->handshake_func == NULL)
1808 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1812 s->method->ssl_renegotiate_check(s);
1814 if (SSL_in_init(s) || SSL_in_before(s))
1816 ret=s->handshake_func(s);
1821 /* For the next 2 functions, SSL_clear() sets shutdown and so
1822 * one of these calls will reset it */
1823 void SSL_set_accept_state(SSL *s)
1827 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1828 s->handshake_func=s->method->ssl_accept;
1829 /* clear the current cipher */
1830 ssl_clear_cipher_ctx(s);
1833 void SSL_set_connect_state(SSL *s)
1837 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1838 s->handshake_func=s->method->ssl_connect;
1839 /* clear the current cipher */
1840 ssl_clear_cipher_ctx(s);
1843 int ssl_undefined_function(SSL *s)
1845 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1849 SSL_METHOD *ssl_bad_method(int ver)
1851 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1855 const char *SSL_get_version(SSL *s)
1857 if (s->version == TLS1_VERSION)
1859 else if (s->version == SSL3_VERSION)
1861 else if (s->version == SSL2_VERSION)
1867 SSL *SSL_dup(SSL *s)
1869 STACK_OF(X509_NAME) *sk;
1874 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1877 ret->version = s->version;
1878 ret->type = s->type;
1879 ret->method = s->method;
1881 if (s->session != NULL)
1883 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1884 SSL_copy_session_id(ret,s);
1888 /* No session has been established yet, so we have to expect
1889 * that s->cert or ret->cert will be changed later --
1890 * they should not both point to the same object,
1891 * and thus we can't use SSL_copy_session_id. */
1893 ret->method = s->method;
1894 ret->method->ssl_new(ret);
1896 if (s->cert != NULL)
1898 if (ret->cert != NULL)
1900 ssl_cert_free(ret->cert);
1902 ret->cert = ssl_cert_dup(s->cert);
1903 if (ret->cert == NULL)
1907 SSL_set_session_id_context(ret,
1908 s->sid_ctx, s->sid_ctx_length);
1911 ret->options=s->options;
1913 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
1914 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1915 ret->msg_callback = s->msg_callback;
1916 ret->msg_callback_arg = s->msg_callback_arg;
1917 SSL_set_verify(ret,SSL_get_verify_mode(s),
1918 SSL_get_verify_callback(s));
1919 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1920 ret->generate_session_id = s->generate_session_id;
1922 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1924 ret->debug=s->debug;
1926 /* copy app data, a little dangerous perhaps */
1927 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
1930 /* setup rbio, and wbio */
1931 if (s->rbio != NULL)
1933 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1936 if (s->wbio != NULL)
1938 if (s->wbio != s->rbio)
1940 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1944 ret->wbio=ret->rbio;
1946 ret->rwstate = s->rwstate;
1947 ret->in_handshake = s->in_handshake;
1948 ret->handshake_func = s->handshake_func;
1949 ret->server = s->server;
1950 ret->new_session = s->new_session;
1951 ret->quiet_shutdown = s->quiet_shutdown;
1952 ret->shutdown=s->shutdown;
1953 ret->state=s->state; /* SSL_dup does not really work at any state, though */
1954 ret->rstate=s->rstate;
1955 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
1957 ret->purpose=s->purpose;
1958 ret->trust=s->trust;
1960 /* dup the cipher_list and cipher_list_by_id stacks */
1961 if (s->cipher_list != NULL)
1963 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1966 if (s->cipher_list_by_id != NULL)
1967 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1971 /* Dup the client_CA list */
1972 if (s->client_CA != NULL)
1974 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1976 for (i=0; i<sk_X509_NAME_num(sk); i++)
1978 xn=sk_X509_NAME_value(sk,i);
1979 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1990 if (ret != NULL) SSL_free(ret);
1996 void ssl_clear_cipher_ctx(SSL *s)
1998 if (s->enc_read_ctx != NULL)
2000 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2001 OPENSSL_free(s->enc_read_ctx);
2002 s->enc_read_ctx=NULL;
2004 if (s->enc_write_ctx != NULL)
2006 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2007 OPENSSL_free(s->enc_write_ctx);
2008 s->enc_write_ctx=NULL;
2010 if (s->expand != NULL)
2012 COMP_CTX_free(s->expand);
2015 if (s->compress != NULL)
2017 COMP_CTX_free(s->compress);
2022 /* Fix this function so that it takes an optional type parameter */
2023 X509 *SSL_get_certificate(SSL *s)
2025 if (s->cert != NULL)
2026 return(s->cert->key->x509);
2031 /* Fix this function so that it takes an optional type parameter */
2032 EVP_PKEY *SSL_get_privatekey(SSL *s)
2034 if (s->cert != NULL)
2035 return(s->cert->key->privatekey);
2040 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
2042 if ((s->session != NULL) && (s->session->cipher != NULL))
2043 return(s->session->cipher);
2047 int ssl_init_wbio_buffer(SSL *s,int push)
2051 if (s->bbio == NULL)
2053 bbio=BIO_new(BIO_f_buffer());
2054 if (bbio == NULL) return(0);
2060 if (s->bbio == s->wbio)
2061 s->wbio=BIO_pop(s->wbio);
2063 (void)BIO_reset(bbio);
2064 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2065 if (!BIO_set_read_buffer_size(bbio,1))
2067 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2072 if (s->wbio != bbio)
2073 s->wbio=BIO_push(bbio,s->wbio);
2077 if (s->wbio == bbio)
2078 s->wbio=BIO_pop(bbio);
2083 void ssl_free_wbio_buffer(SSL *s)
2085 if (s->bbio == NULL) return;
2087 if (s->bbio == s->wbio)
2089 /* remove buffering */
2090 s->wbio=BIO_pop(s->wbio);
2091 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2092 assert(s->wbio != NULL);
2099 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2101 ctx->quiet_shutdown=mode;
2104 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
2106 return(ctx->quiet_shutdown);
2109 void SSL_set_quiet_shutdown(SSL *s,int mode)
2111 s->quiet_shutdown=mode;
2114 int SSL_get_quiet_shutdown(SSL *s)
2116 return(s->quiet_shutdown);
2119 void SSL_set_shutdown(SSL *s,int mode)
2124 int SSL_get_shutdown(SSL *s)
2126 return(s->shutdown);
2129 int SSL_version(SSL *s)
2134 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2139 #ifndef OPENSSL_NO_STDIO
2140 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2142 return(X509_STORE_set_default_paths(ctx->cert_store));
2145 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2148 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2152 void SSL_set_info_callback(SSL *ssl,
2153 void (*cb)(const SSL *ssl,int type,int val))
2155 ssl->info_callback=cb;
2158 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
2160 return ssl->info_callback;
2163 int SSL_state(SSL *ssl)
2168 void SSL_set_verify_result(SSL *ssl,long arg)
2170 ssl->verify_result=arg;
2173 long SSL_get_verify_result(SSL *ssl)
2175 return(ssl->verify_result);
2178 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2179 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2181 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2182 new_func, dup_func, free_func);
2185 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2187 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2190 void *SSL_get_ex_data(SSL *s,int idx)
2192 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2195 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2196 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2198 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2199 new_func, dup_func, free_func);
2202 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2204 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2207 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2209 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2217 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2219 return(ctx->cert_store);
2222 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2224 if (ctx->cert_store != NULL)
2225 X509_STORE_free(ctx->cert_store);
2226 ctx->cert_store=store;
2229 int SSL_want(SSL *s)
2235 * \brief Set the callback for generating temporary RSA keys.
2236 * \param ctx the SSL context.
2237 * \param cb the callback
2240 #ifndef OPENSSL_NO_RSA
2241 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2245 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2248 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2252 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2258 * \brief The RSA temporary key callback function.
2259 * \param ssl the SSL session.
2260 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2261 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2262 * of the required key in bits.
2263 * \return the temporary RSA key.
2264 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2267 RSA *cb(SSL *ssl,int is_export,int keylength)
2272 * \brief Set the callback for generating temporary DH keys.
2273 * \param ctx the SSL context.
2274 * \param dh the callback
2277 #ifndef OPENSSL_NO_DH
2278 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2281 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2284 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2287 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2292 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))
2294 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2296 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))
2298 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2303 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2304 #include "../crypto/bio/bss_file.c"
2307 IMPLEMENT_STACK_OF(SSL_CIPHER)
2308 IMPLEMENT_STACK_OF(SSL_COMP)