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.]
66 #include <openssl/objects.h>
67 #include <openssl/lhash.h>
68 #include <openssl/x509v3.h>
71 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
73 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
74 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
75 static int ssl_meth_num=0;
76 static int ssl_ctx_meth_num=0;
78 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
79 /* evil casts, but these functions are only called if there's a library bug */
80 (int (*)(SSL *,int))ssl_undefined_function,
81 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
82 ssl_undefined_function,
83 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
84 (int (*)(SSL*, int))ssl_undefined_function,
85 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
92 if (s->method == NULL)
94 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
102 #if 0 /* Disabled since version 1.10 of this file (early return not
103 * needed because SSL_clear is not called when doing renegotiation) */
104 /* This is set if we are doing dynamic renegotiation so keep
105 * the old cipher. It is sort of a SSL_clear_lite :-) */
106 if (s->new_session) return(1);
110 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
115 state=s->state; /* Keep to check if we throw away the session-id */
118 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
120 s->version=s->method->version;
121 s->client_version=s->version;
122 s->rwstate=SSL_NOTHING;
123 s->rstate=SSL_ST_READ_HEADER;
125 s->read_ahead=s->ctx->read_ahead;
128 if (s->init_buf != NULL)
130 BUF_MEM_free(s->init_buf);
134 ssl_clear_cipher_ctx(s);
136 if (ssl_clear_bad_session(s))
138 SSL_SESSION_free(s->session);
145 /* Check to see if we were changed into a different method, if
146 * so, revert back if we are not doing session-id reuse. */
147 if ((s->session == NULL) && (s->method != s->ctx->method))
149 s->method->ssl_free(s);
150 s->method=s->ctx->method;
151 if (!s->method->ssl_new(s))
156 s->method->ssl_clear(s);
160 /** Used to change an SSL_CTXs default SSL method type */
161 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
163 STACK_OF(SSL_CIPHER) *sk;
167 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
168 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
169 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
171 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
177 SSL *SSL_new(SSL_CTX *ctx)
183 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
186 if (ctx->method == NULL)
188 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
192 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
193 if (s == NULL) goto err;
194 memset(s,0,sizeof(SSL));
196 #ifndef OPENSSL_NO_KRB5
197 s->kssl_ctx = kssl_ctx_new();
198 #endif /* OPENSSL_NO_KRB5 */
200 if (ctx->cert != NULL)
202 /* Earlier library versions used to copy the pointer to
203 * the CERT, not its contents; only when setting new
204 * parameters for the per-SSL copy, ssl_cert_new would be
205 * called (and the direct reference to the per-SSL_CTX
206 * settings would be lost, but those still were indirectly
207 * accessed for various purposes, and for that reason they
208 * used to be known as s->ctx->default_cert).
209 * Now we don't look at the SSL_CTX's CERT after having
210 * duplicated it once. */
212 s->cert = ssl_cert_dup(ctx->cert);
217 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
218 s->sid_ctx_length=ctx->sid_ctx_length;
219 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
220 s->verify_mode=ctx->verify_mode;
221 s->verify_depth=ctx->verify_depth;
222 s->verify_callback=ctx->default_verify_callback;
223 s->generate_session_id=ctx->generate_session_id;
224 s->purpose = ctx->purpose;
225 s->trust = ctx->trust;
226 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
229 s->verify_result=X509_V_OK;
231 s->method=ctx->method;
233 if (!s->method->ssl_new(s))
236 s->quiet_shutdown=ctx->quiet_shutdown;
238 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
239 s->options=ctx->options;
241 s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
244 CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
251 ssl_cert_free(s->cert);
253 SSL_CTX_free(s->ctx); /* decrement reference count */
256 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
260 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
261 unsigned int sid_ctx_len)
263 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
265 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
268 ctx->sid_ctx_length=sid_ctx_len;
269 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
274 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
275 unsigned int sid_ctx_len)
277 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
279 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
282 ssl->sid_ctx_length=sid_ctx_len;
283 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
288 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
290 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
291 ctx->generate_session_id = cb;
292 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
296 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
298 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
299 ssl->generate_session_id = cb;
300 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
304 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
307 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
308 * we can "construct" a session to give us the desired check - ie. to
309 * find if there's a session in the hash table that would conflict with
310 * any new session built out of this id/id_len and the ssl_version in
311 * use by this SSL. */
313 r.ssl_version = ssl->version;
314 r.session_id_length = id_len;
315 memcpy(r.session_id, id, id_len);
316 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
317 * callback is calling us to check the uniqueness of a shorter ID, it
318 * must be compared as a padded-out ID because that is what it will be
319 * converted to when the callback has finished choosing it. */
320 if((r.ssl_version == SSL2_VERSION) &&
321 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
323 memset(r.session_id + id_len, 0,
324 SSL2_SSL_SESSION_ID_LENGTH - id_len);
325 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
328 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
329 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
330 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
334 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
336 if(X509_PURPOSE_get_by_id(purpose) == -1) {
337 SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
340 s->purpose = purpose;
344 int SSL_set_purpose(SSL *s, int purpose)
346 if(X509_PURPOSE_get_by_id(purpose) == -1) {
347 SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
350 s->purpose = purpose;
354 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
356 if(X509_TRUST_get_by_id(trust) == -1) {
357 SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
364 int SSL_set_trust(SSL *s, int trust)
366 if(X509_TRUST_get_by_id(trust) == -1) {
367 SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
374 void SSL_free(SSL *s)
381 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
389 fprintf(stderr,"SSL_free, bad reference count\n");
394 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
398 /* If the buffering BIO is in place, pop it off */
399 if (s->bbio == s->wbio)
401 s->wbio=BIO_pop(s->wbio);
407 BIO_free_all(s->rbio);
408 if ((s->wbio != NULL) && (s->wbio != s->rbio))
409 BIO_free_all(s->wbio);
411 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
413 /* add extra stuff */
414 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
415 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
417 /* Make the next call work :-) */
418 if (s->session != NULL)
420 ssl_clear_bad_session(s);
421 SSL_SESSION_free(s->session);
424 ssl_clear_cipher_ctx(s);
426 if (s->cert != NULL) ssl_cert_free(s->cert);
427 /* Free up if allocated */
429 if (s->ctx) SSL_CTX_free(s->ctx);
431 if (s->client_CA != NULL)
432 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
434 if (s->method != NULL) s->method->ssl_free(s);
439 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
441 /* If the output buffering BIO is still in place, remove it
445 if (s->wbio == s->bbio)
447 s->wbio=s->wbio->next_bio;
448 s->bbio->next_bio=NULL;
451 if ((s->rbio != NULL) && (s->rbio != rbio))
452 BIO_free_all(s->rbio);
453 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
454 BIO_free_all(s->wbio);
459 BIO *SSL_get_rbio(SSL *s)
462 BIO *SSL_get_wbio(SSL *s)
465 int SSL_get_fd(SSL *s)
471 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
477 #ifndef OPENSSL_NO_SOCK
478 int SSL_set_fd(SSL *s,int fd)
483 bio=BIO_new(BIO_s_socket());
487 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
490 BIO_set_fd(bio,fd,BIO_NOCLOSE);
491 SSL_set_bio(s,bio,bio);
497 int SSL_set_wfd(SSL *s,int fd)
502 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
503 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
505 bio=BIO_new(BIO_s_socket());
508 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
509 BIO_set_fd(bio,fd,BIO_NOCLOSE);
510 SSL_set_bio(s,SSL_get_rbio(s),bio);
513 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
519 int SSL_set_rfd(SSL *s,int fd)
524 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
525 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
527 bio=BIO_new(BIO_s_socket());
531 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
534 BIO_set_fd(bio,fd,BIO_NOCLOSE);
535 SSL_set_bio(s,bio,SSL_get_wbio(s));
538 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
546 /* return length of latest Finished message we sent, copy to 'buf' */
547 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
553 ret = s->s3->tmp.finish_md_len;
556 memcpy(buf, s->s3->tmp.finish_md, count);
561 /* return length of latest Finished message we expected, copy to 'buf' */
562 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
568 ret = s->s3->tmp.peer_finish_md_len;
571 memcpy(buf, s->s3->tmp.peer_finish_md, count);
577 int SSL_get_verify_mode(SSL *s)
579 return(s->verify_mode);
582 int SSL_get_verify_depth(SSL *s)
584 return(s->verify_depth);
587 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
589 return(s->verify_callback);
592 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
594 return(ctx->verify_mode);
597 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
599 return(ctx->verify_depth);
602 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
604 return(ctx->default_verify_callback);
607 void SSL_set_verify(SSL *s,int mode,
608 int (*callback)(int ok,X509_STORE_CTX *ctx))
611 if (callback != NULL)
612 s->verify_callback=callback;
615 void SSL_set_verify_depth(SSL *s,int depth)
617 s->verify_depth=depth;
620 void SSL_set_read_ahead(SSL *s,int yes)
625 int SSL_get_read_ahead(SSL *s)
627 return(s->read_ahead);
630 int SSL_pending(SSL *s)
632 /* SSL_pending cannot work properly if read-ahead is enabled
633 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
634 * and it is impossible to fix since SSL_pending cannot report
635 * errors that may be observed while scanning the new data.
636 * (Note that SSL_pending() is often used as a boolean value,
637 * so we'd better not return -1.)
639 return(s->method->ssl_pending(s));
642 X509 *SSL_get_peer_certificate(SSL *s)
646 if ((s == NULL) || (s->session == NULL))
651 if (r == NULL) return(r);
653 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
658 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
662 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
665 r=s->session->sess_cert->cert_chain;
667 /* If we are a client, cert_chain includes the peer's own
668 * certificate; if we are a server, it does not. */
673 /* Now in theory, since the calling process own 't' it should be safe to
674 * modify. We need to be able to read f without being hassled */
675 void SSL_copy_session_id(SSL *t,SSL *f)
679 /* Do we need to to SSL locking? */
680 SSL_set_session(t,SSL_get_session(f));
682 /* what if we are setup as SSLv2 but want to talk SSLv3 or
684 if (t->method != f->method)
686 t->method->ssl_free(t); /* cleanup current */
687 t->method=f->method; /* change method */
688 t->method->ssl_new(t); /* setup new */
694 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
699 if (tmp != NULL) ssl_cert_free(tmp);
700 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
703 /* Fix this so it checks all the valid key/cert options */
704 int SSL_CTX_check_private_key(SSL_CTX *ctx)
706 if ( (ctx == NULL) ||
707 (ctx->cert == NULL) ||
708 (ctx->cert->key->x509 == NULL))
710 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
713 if (ctx->cert->key->privatekey == NULL)
715 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
718 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
721 /* Fix this function so that it takes an optional type parameter */
722 int SSL_check_private_key(SSL *ssl)
726 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
729 if (ssl->cert == NULL)
731 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
734 if (ssl->cert->key->x509 == NULL)
736 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
739 if (ssl->cert->key->privatekey == NULL)
741 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
744 return(X509_check_private_key(ssl->cert->key->x509,
745 ssl->cert->key->privatekey));
748 int SSL_accept(SSL *s)
750 if (s->handshake_func == 0)
751 /* Not properly initialized yet */
752 SSL_set_accept_state(s);
754 return(s->method->ssl_accept(s));
757 int SSL_connect(SSL *s)
759 if (s->handshake_func == 0)
760 /* Not properly initialized yet */
761 SSL_set_connect_state(s);
763 return(s->method->ssl_connect(s));
766 long SSL_get_default_timeout(SSL *s)
768 return(s->method->get_timeout());
771 int SSL_read(SSL *s,void *buf,int num)
773 if (s->handshake_func == 0)
775 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
779 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
781 s->rwstate=SSL_NOTHING;
784 return(s->method->ssl_read(s,buf,num));
787 int SSL_peek(SSL *s,void *buf,int num)
789 if (s->handshake_func == 0)
791 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
795 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
799 return(s->method->ssl_peek(s,buf,num));
802 int SSL_write(SSL *s,const void *buf,int num)
804 if (s->handshake_func == 0)
806 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
810 if (s->shutdown & SSL_SENT_SHUTDOWN)
812 s->rwstate=SSL_NOTHING;
813 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
816 return(s->method->ssl_write(s,buf,num));
819 int SSL_shutdown(SSL *s)
821 /* Note that this function behaves differently from what one might
822 * expect. Return values are 0 for no success (yet),
823 * 1 for success; but calling it once is usually not enough,
824 * even if blocking I/O is used (see ssl3_shutdown).
827 if (s->handshake_func == 0)
829 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
833 if ((s != NULL) && !SSL_in_init(s))
834 return(s->method->ssl_shutdown(s));
839 int SSL_renegotiate(SSL *s)
842 return(s->method->ssl_renegotiate(s));
845 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
851 case SSL_CTRL_GET_READ_AHEAD:
852 return(s->read_ahead);
853 case SSL_CTRL_SET_READ_AHEAD:
857 case SSL_CTRL_OPTIONS:
858 return(s->options|=larg);
860 return(s->mode|=larg);
862 return(s->method->ssl_ctrl(s,cmd,larg,parg));
866 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
871 return(s->method->ssl_callback_ctrl(s,cmd,fp));
875 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
877 return ctx->sessions;
880 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
886 case SSL_CTRL_GET_READ_AHEAD:
887 return(ctx->read_ahead);
888 case SSL_CTRL_SET_READ_AHEAD:
890 ctx->read_ahead=larg;
893 case SSL_CTRL_SET_SESS_CACHE_SIZE:
894 l=ctx->session_cache_size;
895 ctx->session_cache_size=larg;
897 case SSL_CTRL_GET_SESS_CACHE_SIZE:
898 return(ctx->session_cache_size);
899 case SSL_CTRL_SET_SESS_CACHE_MODE:
900 l=ctx->session_cache_mode;
901 ctx->session_cache_mode=larg;
903 case SSL_CTRL_GET_SESS_CACHE_MODE:
904 return(ctx->session_cache_mode);
906 case SSL_CTRL_SESS_NUMBER:
907 return(ctx->sessions->num_items);
908 case SSL_CTRL_SESS_CONNECT:
909 return(ctx->stats.sess_connect);
910 case SSL_CTRL_SESS_CONNECT_GOOD:
911 return(ctx->stats.sess_connect_good);
912 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
913 return(ctx->stats.sess_connect_renegotiate);
914 case SSL_CTRL_SESS_ACCEPT:
915 return(ctx->stats.sess_accept);
916 case SSL_CTRL_SESS_ACCEPT_GOOD:
917 return(ctx->stats.sess_accept_good);
918 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
919 return(ctx->stats.sess_accept_renegotiate);
920 case SSL_CTRL_SESS_HIT:
921 return(ctx->stats.sess_hit);
922 case SSL_CTRL_SESS_CB_HIT:
923 return(ctx->stats.sess_cb_hit);
924 case SSL_CTRL_SESS_MISSES:
925 return(ctx->stats.sess_miss);
926 case SSL_CTRL_SESS_TIMEOUTS:
927 return(ctx->stats.sess_timeout);
928 case SSL_CTRL_SESS_CACHE_FULL:
929 return(ctx->stats.sess_cache_full);
930 case SSL_CTRL_OPTIONS:
931 return(ctx->options|=larg);
933 return(ctx->mode|=larg);
935 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
939 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
944 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
948 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
956 return((l > 0)?1:-1);
959 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
960 const SSL_CIPHER * const *bp)
964 l=(*ap)->id-(*bp)->id;
968 return((l > 0)?1:-1);
971 /** return a STACK of the ciphers available for the SSL and in order of
973 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
975 if ((s != NULL) && (s->cipher_list != NULL))
977 return(s->cipher_list);
979 else if ((s->ctx != NULL) &&
980 (s->ctx->cipher_list != NULL))
982 return(s->ctx->cipher_list);
987 /** return a STACK of the ciphers available for the SSL and in order of
989 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
991 if ((s != NULL) && (s->cipher_list_by_id != NULL))
993 return(s->cipher_list_by_id);
995 else if ((s != NULL) && (s->ctx != NULL) &&
996 (s->ctx->cipher_list_by_id != NULL))
998 return(s->ctx->cipher_list_by_id);
1003 /** The old interface to get the same thing as SSL_get_ciphers() */
1004 const char *SSL_get_cipher_list(SSL *s,int n)
1007 STACK_OF(SSL_CIPHER) *sk;
1009 if (s == NULL) return(NULL);
1010 sk=SSL_get_ciphers(s);
1011 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1013 c=sk_SSL_CIPHER_value(sk,n);
1014 if (c == NULL) return(NULL);
1018 /** specify the ciphers to be used by default by the SSL_CTX */
1019 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1021 STACK_OF(SSL_CIPHER) *sk;
1023 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1024 &ctx->cipher_list_by_id,str);
1026 return((sk == NULL)?0:1);
1029 /** specify the ciphers to be used by the SSL */
1030 int SSL_set_cipher_list(SSL *s,const char *str)
1032 STACK_OF(SSL_CIPHER) *sk;
1034 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1035 &s->cipher_list_by_id,str);
1037 return((sk == NULL)?0:1);
1040 /* works well for SSLv2, not so good for SSLv3 */
1041 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1045 STACK_OF(SSL_CIPHER) *sk;
1049 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1054 sk=s->session->ciphers;
1055 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1057 /* Decrement for either the ':' or a '\0' */
1059 c=sk_SSL_CIPHER_value(sk,i);
1060 for (cp=c->name; *cp; )
1076 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1082 if (sk == NULL) return(0);
1085 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1087 c=sk_SSL_CIPHER_value(sk,i);
1088 j=ssl_put_cipher_by_char(s,c,p);
1094 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1095 STACK_OF(SSL_CIPHER) **skp)
1098 STACK_OF(SSL_CIPHER) *sk;
1101 n=ssl_put_cipher_by_char(s,NULL,NULL);
1104 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1107 if ((skp == NULL) || (*skp == NULL))
1108 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1112 sk_SSL_CIPHER_zero(sk);
1115 for (i=0; i<num; i+=n)
1117 c=ssl_get_cipher_by_char(s,p);
1121 if (!sk_SSL_CIPHER_push(sk,c))
1123 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1133 if ((skp == NULL) || (*skp == NULL))
1134 sk_SSL_CIPHER_free(sk);
1138 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1143 ((unsigned int) a->session_id[0] )|
1144 ((unsigned int) a->session_id[1]<< 8L)|
1145 ((unsigned long)a->session_id[2]<<16L)|
1146 ((unsigned long)a->session_id[3]<<24L);
1150 /* NB: If this function (or indeed the hash function which uses a sort of
1151 * coarser function than this one) is changed, ensure
1152 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1153 * able to construct an SSL_SESSION that will collide with any existing session
1154 * with a matching session ID. */
1155 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1157 if (a->ssl_version != b->ssl_version)
1159 if (a->session_id_length != b->session_id_length)
1161 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1164 /* These wrapper functions should remain rather than redeclaring
1165 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1166 * variable. The reason is that the functions aren't static, they're exposed via
1168 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1169 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1171 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1177 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1181 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1183 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1186 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1190 memset(ret,0,sizeof(SSL_CTX));
1194 ret->cert_store=NULL;
1195 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1196 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1197 ret->session_cache_head=NULL;
1198 ret->session_cache_tail=NULL;
1200 /* We take the system default */
1201 ret->session_timeout=meth->get_timeout();
1203 ret->new_session_cb=NULL;
1204 ret->remove_session_cb=NULL;
1205 ret->get_session_cb=NULL;
1206 ret->generate_session_id=NULL;
1208 memset((char *)&ret->stats,0,sizeof(ret->stats));
1211 ret->quiet_shutdown=0;
1213 /* ret->cipher=NULL;*/
1214 /* ret->s2->challenge=NULL;
1215 ret->master_key=NULL;
1217 ret->s2->conn_id=NULL; */
1219 ret->info_callback=NULL;
1221 ret->app_verify_callback=NULL;
1222 ret->app_verify_arg=NULL;
1225 ret->verify_mode=SSL_VERIFY_NONE;
1226 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1227 ret->default_verify_callback=NULL;
1228 if ((ret->cert=ssl_cert_new()) == NULL)
1231 ret->default_passwd_callback=NULL;
1232 ret->default_passwd_callback_userdata=NULL;
1233 ret->client_cert_cb=NULL;
1235 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1236 LHASH_COMP_FN(SSL_SESSION_cmp));
1237 if (ret->sessions == NULL) goto err;
1238 ret->cert_store=X509_STORE_new();
1239 if (ret->cert_store == NULL) goto err;
1241 ssl_create_cipher_list(ret->method,
1242 &ret->cipher_list,&ret->cipher_list_by_id,
1243 SSL_DEFAULT_CIPHER_LIST);
1244 if (ret->cipher_list == NULL
1245 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1247 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1251 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1253 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1256 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1258 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1261 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1263 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1267 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1270 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1272 ret->extra_certs=NULL;
1273 ret->comp_methods=SSL_COMP_get_compression_methods();
1277 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1279 if (ret != NULL) SSL_CTX_free(ret);
1284 static void SSL_COMP_free(SSL_COMP *comp)
1285 { OPENSSL_free(comp); }
1288 void SSL_CTX_free(SSL_CTX *a)
1292 if (a == NULL) return;
1294 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1296 REF_PRINT("SSL_CTX",a);
1302 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1306 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1308 if (a->sessions != NULL)
1310 SSL_CTX_flush_sessions(a,0);
1311 lh_free(a->sessions);
1313 if (a->cert_store != NULL)
1314 X509_STORE_free(a->cert_store);
1315 if (a->cipher_list != NULL)
1316 sk_SSL_CIPHER_free(a->cipher_list);
1317 if (a->cipher_list_by_id != NULL)
1318 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1319 if (a->cert != NULL)
1320 ssl_cert_free(a->cert);
1321 if (a->client_CA != NULL)
1322 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1323 if (a->extra_certs != NULL)
1324 sk_X509_pop_free(a->extra_certs,X509_free);
1325 #if 0 /* This should never be done, since it removes a global database */
1326 if (a->comp_methods != NULL)
1327 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1329 a->comp_methods = NULL;
1334 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1336 ctx->default_passwd_callback=cb;
1339 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1341 ctx->default_passwd_callback_userdata=u;
1344 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1347 * int (*cb)(X509_STORE_CTX *),
1349 * int (*cb)(X509_STORE_CTX *, void *arg)
1351 ctx->app_verify_callback=cb;
1352 ctx->app_verify_arg=arg; /* never used */
1355 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1357 ctx->verify_mode=mode;
1358 ctx->default_verify_callback=cb;
1359 /* This needs cleaning up EAY EAY EAY */
1360 X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1363 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1365 ctx->verify_depth=depth;
1368 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1371 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1372 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1373 int rsa_tmp_export,dh_tmp_export,kl;
1374 unsigned long mask,emask;
1376 if (c == NULL) return;
1378 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1380 #ifndef OPENSSL_NO_RSA
1381 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1382 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1383 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1385 rsa_tmp=rsa_tmp_export=0;
1387 #ifndef OPENSSL_NO_DH
1388 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1389 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1390 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1392 dh_tmp=dh_tmp_export=0;
1395 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1396 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1397 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1398 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1399 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1400 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1401 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1402 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1403 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1404 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1405 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1406 /* FIX THIS EAY EAY EAY */
1407 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1408 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1414 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1415 rsa_tmp,rsa_tmp_export,dh_tmp,
1416 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1419 if (rsa_enc || (rsa_tmp && rsa_sign))
1421 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1425 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1426 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1427 (rsa_enc || rsa_sign || dsa_sign))
1429 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1430 (rsa_enc || rsa_sign || dsa_sign))
1440 if (dh_rsa) mask|=SSL_kDHr;
1441 if (dh_rsa_export) emask|=SSL_kDHr;
1443 if (dh_dsa) mask|=SSL_kDHd;
1444 if (dh_dsa_export) emask|=SSL_kDHd;
1446 if (rsa_enc || rsa_sign)
1461 #ifndef OPENSSL_NO_KRB5
1462 mask|=SSL_kKRB5|SSL_aKRB5;
1463 emask|=SSL_kKRB5|SSL_aKRB5;
1467 c->export_mask=emask;
1471 /* THIS NEEDS CLEANING UP */
1472 X509 *ssl_get_server_send_cert(SSL *s)
1474 unsigned long alg,mask,kalg;
1479 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1480 alg=s->s3->tmp.new_cipher->algorithms;
1481 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1482 mask=is_export?c->export_mask:c->mask;
1483 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1485 if (kalg & SSL_kDHr)
1487 else if (kalg & SSL_kDHd)
1489 else if (kalg & SSL_aDSS)
1490 i=SSL_PKEY_DSA_SIGN;
1491 else if (kalg & SSL_aRSA)
1493 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1494 i=SSL_PKEY_RSA_SIGN;
1498 else if (kalg & SSL_aKRB5)
1500 /* VRS something else here? */
1503 else /* if (kalg & SSL_aNULL) */
1505 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1508 if (c->pkeys[i].x509 == NULL) return(NULL);
1509 return(c->pkeys[i].x509);
1512 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1517 alg=cipher->algorithms;
1520 if ((alg & SSL_aDSS) &&
1521 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1522 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1523 else if (alg & SSL_aRSA)
1525 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1526 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1527 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1528 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1532 else /* if (alg & SSL_aNULL) */
1534 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1539 void ssl_update_cache(SSL *s,int mode)
1543 /* If the session_id_length is 0, we are not supposed to cache it,
1544 * and it would be rather hard to do anyway :-) */
1545 if (s->session->session_id_length == 0) return;
1547 if ((s->ctx->session_cache_mode & mode)
1549 && SSL_CTX_add_session(s->ctx,s->session)
1550 && (s->ctx->new_session_cb != NULL))
1552 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1553 if (!s->ctx->new_session_cb(s,s->session))
1554 SSL_SESSION_free(s->session);
1557 /* auto flush every 255 connections */
1558 i=s->ctx->session_cache_mode;
1559 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1560 ((i & mode) == mode))
1562 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1563 ?s->ctx->stats.sess_connect_good
1564 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1566 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1571 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1576 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1581 if (s->method != meth)
1583 if (s->handshake_func != NULL)
1584 conn=(s->handshake_func == s->method->ssl_connect);
1586 if (s->method->version == meth->version)
1590 s->method->ssl_free(s);
1592 ret=s->method->ssl_new(s);
1596 s->handshake_func=meth->ssl_connect;
1598 s->handshake_func=meth->ssl_accept;
1603 int SSL_get_error(SSL *s,int i)
1609 if (i > 0) return(SSL_ERROR_NONE);
1611 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1612 * etc, where we do encode the error */
1613 if ((l=ERR_peek_error()) != 0)
1615 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1616 return(SSL_ERROR_SYSCALL);
1618 return(SSL_ERROR_SSL);
1621 if ((i < 0) && SSL_want_read(s))
1623 bio=SSL_get_rbio(s);
1624 if (BIO_should_read(bio))
1625 return(SSL_ERROR_WANT_READ);
1626 else if (BIO_should_write(bio))
1627 /* This one doesn't make too much sense ... We never try
1628 * to write to the rbio, and an application program where
1629 * rbio and wbio are separate couldn't even know what it
1631 * However if we ever set s->rwstate incorrectly
1632 * (so that we have SSL_want_read(s) instead of
1633 * SSL_want_write(s)) and rbio and wbio *are* the same,
1634 * this test works around that bug; so it might be safer
1636 return(SSL_ERROR_WANT_WRITE);
1637 else if (BIO_should_io_special(bio))
1639 reason=BIO_get_retry_reason(bio);
1640 if (reason == BIO_RR_CONNECT)
1641 return(SSL_ERROR_WANT_CONNECT);
1642 else if (reason == BIO_RR_ACCEPT)
1643 return(SSL_ERROR_WANT_ACCEPT);
1645 return(SSL_ERROR_SYSCALL); /* unknown */
1649 if ((i < 0) && SSL_want_write(s))
1651 bio=SSL_get_wbio(s);
1652 if (BIO_should_write(bio))
1653 return(SSL_ERROR_WANT_WRITE);
1654 else if (BIO_should_read(bio))
1655 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1656 return(SSL_ERROR_WANT_READ);
1657 else if (BIO_should_io_special(bio))
1659 reason=BIO_get_retry_reason(bio);
1660 if (reason == BIO_RR_CONNECT)
1661 return(SSL_ERROR_WANT_CONNECT);
1662 else if (reason == BIO_RR_ACCEPT)
1663 return(SSL_ERROR_WANT_ACCEPT);
1665 return(SSL_ERROR_SYSCALL);
1668 if ((i < 0) && SSL_want_x509_lookup(s))
1670 return(SSL_ERROR_WANT_X509_LOOKUP);
1675 if (s->version == SSL2_VERSION)
1677 /* assume it is the socket being closed */
1678 return(SSL_ERROR_ZERO_RETURN);
1682 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1683 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1684 return(SSL_ERROR_ZERO_RETURN);
1687 return(SSL_ERROR_SYSCALL);
1690 int SSL_do_handshake(SSL *s)
1694 if (s->handshake_func == NULL)
1696 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1700 s->method->ssl_renegotiate_check(s);
1702 if (SSL_in_init(s) || SSL_in_before(s))
1704 ret=s->handshake_func(s);
1709 /* For the next 2 functions, SSL_clear() sets shutdown and so
1710 * one of these calls will reset it */
1711 void SSL_set_accept_state(SSL *s)
1715 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1716 s->handshake_func=s->method->ssl_accept;
1717 /* clear the current cipher */
1718 ssl_clear_cipher_ctx(s);
1721 void SSL_set_connect_state(SSL *s)
1725 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1726 s->handshake_func=s->method->ssl_connect;
1727 /* clear the current cipher */
1728 ssl_clear_cipher_ctx(s);
1731 int ssl_undefined_function(SSL *s)
1733 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1737 SSL_METHOD *ssl_bad_method(int ver)
1739 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1743 const char *SSL_get_version(SSL *s)
1745 if (s->version == TLS1_VERSION)
1747 else if (s->version == SSL3_VERSION)
1749 else if (s->version == SSL2_VERSION)
1755 SSL *SSL_dup(SSL *s)
1757 STACK_OF(X509_NAME) *sk;
1762 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1765 if (s->session != NULL)
1767 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1768 SSL_copy_session_id(ret,s);
1772 /* No session has been established yet, so we have to expect
1773 * that s->cert or ret->cert will be changed later --
1774 * they should not both point to the same object,
1775 * and thus we can't use SSL_copy_session_id. */
1777 ret->method = s->method;
1778 ret->method->ssl_new(ret);
1780 if (s->cert != NULL)
1782 if (ret->cert != NULL)
1784 ssl_cert_free(ret->cert);
1786 ret->cert = ssl_cert_dup(s->cert);
1787 if (ret->cert == NULL)
1791 SSL_set_session_id_context(ret,
1792 s->sid_ctx, s->sid_ctx_length);
1795 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1796 SSL_set_verify(ret,SSL_get_verify_mode(s),
1797 SSL_get_verify_callback(s));
1798 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1800 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1802 ret->debug=s->debug;
1803 ret->options=s->options;
1805 /* copy app data, a little dangerous perhaps */
1806 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1809 /* setup rbio, and wbio */
1810 if (s->rbio != NULL)
1812 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1815 if (s->wbio != NULL)
1817 if (s->wbio != s->rbio)
1819 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1823 ret->wbio=ret->rbio;
1826 /* dup the cipher_list and cipher_list_by_id stacks */
1827 if (s->cipher_list != NULL)
1829 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1832 if (s->cipher_list_by_id != NULL)
1833 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1837 /* Dup the client_CA list */
1838 if (s->client_CA != NULL)
1840 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1842 for (i=0; i<sk_X509_NAME_num(sk); i++)
1844 xn=sk_X509_NAME_value(sk,i);
1845 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1853 ret->shutdown=s->shutdown;
1854 ret->state=s->state;
1855 ret->handshake_func=s->handshake_func;
1856 ret->server=s->server;
1861 if (ret != NULL) SSL_free(ret);
1867 void ssl_clear_cipher_ctx(SSL *s)
1869 if (s->enc_read_ctx != NULL)
1871 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1872 OPENSSL_free(s->enc_read_ctx);
1873 s->enc_read_ctx=NULL;
1875 if (s->enc_write_ctx != NULL)
1877 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1878 OPENSSL_free(s->enc_write_ctx);
1879 s->enc_write_ctx=NULL;
1881 if (s->expand != NULL)
1883 COMP_CTX_free(s->expand);
1886 if (s->compress != NULL)
1888 COMP_CTX_free(s->compress);
1893 /* Fix this function so that it takes an optional type parameter */
1894 X509 *SSL_get_certificate(SSL *s)
1896 if (s->cert != NULL)
1897 return(s->cert->key->x509);
1902 /* Fix this function so that it takes an optional type parameter */
1903 EVP_PKEY *SSL_get_privatekey(SSL *s)
1905 if (s->cert != NULL)
1906 return(s->cert->key->privatekey);
1911 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1913 if ((s->session != NULL) && (s->session->cipher != NULL))
1914 return(s->session->cipher);
1918 int ssl_init_wbio_buffer(SSL *s,int push)
1922 if (s->bbio == NULL)
1924 bbio=BIO_new(BIO_f_buffer());
1925 if (bbio == NULL) return(0);
1931 if (s->bbio == s->wbio)
1932 s->wbio=BIO_pop(s->wbio);
1934 (void)BIO_reset(bbio);
1935 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1936 if (!BIO_set_read_buffer_size(bbio,1))
1938 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1943 if (s->wbio != bbio)
1944 s->wbio=BIO_push(bbio,s->wbio);
1948 if (s->wbio == bbio)
1949 s->wbio=BIO_pop(bbio);
1954 void ssl_free_wbio_buffer(SSL *s)
1956 if (s->bbio == NULL) return;
1958 if (s->bbio == s->wbio)
1960 /* remove buffering */
1961 s->wbio=BIO_pop(s->wbio);
1962 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1963 assert(s->wbio != NULL);
1970 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1972 ctx->quiet_shutdown=mode;
1975 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1977 return(ctx->quiet_shutdown);
1980 void SSL_set_quiet_shutdown(SSL *s,int mode)
1982 s->quiet_shutdown=mode;
1985 int SSL_get_quiet_shutdown(SSL *s)
1987 return(s->quiet_shutdown);
1990 void SSL_set_shutdown(SSL *s,int mode)
1995 int SSL_get_shutdown(SSL *s)
1997 return(s->shutdown);
2000 int SSL_version(SSL *s)
2005 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2010 #ifndef OPENSSL_NO_STDIO
2011 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2013 return(X509_STORE_set_default_paths(ctx->cert_store));
2016 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2019 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2023 void SSL_set_info_callback(SSL *ssl,void (*cb)())
2025 ssl->info_callback=cb;
2028 void (*SSL_get_info_callback(SSL *ssl))(void)
2030 return((void (*)())ssl->info_callback);
2033 int SSL_state(SSL *ssl)
2038 void SSL_set_verify_result(SSL *ssl,long arg)
2040 ssl->verify_result=arg;
2043 long SSL_get_verify_result(SSL *ssl)
2045 return(ssl->verify_result);
2048 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2049 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2052 return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
2053 &ssl_meth,argl,argp,new_func,dup_func,free_func));
2056 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2058 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2061 void *SSL_get_ex_data(SSL *s,int idx)
2063 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2066 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2067 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2070 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
2071 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
2074 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2076 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2079 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2081 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2089 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2091 return(ctx->cert_store);
2094 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2096 if (ctx->cert_store != NULL)
2097 X509_STORE_free(ctx->cert_store);
2098 ctx->cert_store=store;
2101 int SSL_want(SSL *s)
2107 * \brief Set the callback for generating temporary RSA keys.
2108 * \param ctx the SSL context.
2109 * \param cb the callback
2112 #ifndef OPENSSL_NO_RSA
2113 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2117 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2120 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2124 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2130 * \brief The RSA temporary key callback function.
2131 * \param ssl the SSL session.
2132 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2133 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2134 * of the required key in bits.
2135 * \return the temporary RSA key.
2136 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2139 RSA *cb(SSL *ssl,int is_export,int keylength)
2144 * \brief Set the callback for generating temporary DH keys.
2145 * \param ctx the SSL context.
2146 * \param dh the callback
2149 #ifndef OPENSSL_NO_DH
2150 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2153 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2156 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2159 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2163 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2164 #include "../crypto/bio/bss_file.c"
2167 IMPLEMENT_STACK_OF(SSL_CIPHER)
2168 IMPLEMENT_STACK_OF(SSL_COMP)