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.]
64 #include <openssl/objects.h>
65 #include <openssl/lhash.h>
66 #include <openssl/x509v3.h>
69 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
71 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
72 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
73 static int ssl_meth_num=0;
74 static int ssl_ctx_meth_num=0;
76 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
77 /* evil casts, but these functions are only called if there's a library bug */
78 (int (*)(SSL *,int))ssl_undefined_function,
79 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
80 ssl_undefined_function,
81 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
82 (int (*)(SSL*, int))ssl_undefined_function,
83 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
90 if (s->method == NULL)
92 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
100 #if 0 /* Disabled since version 1.10 of this file (early return not
101 * needed because SSL_clear is not called when doing renegotiation) */
102 /* This is set if we are doing dynamic renegotiation so keep
103 * the old cipher. It is sort of a SSL_clear_lite :-) */
104 if (s->new_session) return(1);
108 SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
113 state=s->state; /* Keep to check if we throw away the session-id */
116 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
118 s->version=s->method->version;
119 s->client_version=s->version;
120 s->rwstate=SSL_NOTHING;
121 s->rstate=SSL_ST_READ_HEADER;
123 s->read_ahead=s->ctx->read_ahead;
126 if (s->init_buf != NULL)
128 BUF_MEM_free(s->init_buf);
132 ssl_clear_cipher_ctx(s);
134 if (ssl_clear_bad_session(s))
136 SSL_SESSION_free(s->session);
143 /* Check to see if we were changed into a different method, if
144 * so, revert back if we are not doing session-id reuse. */
145 if ((s->session == NULL) && (s->method != s->ctx->method))
147 s->method->ssl_free(s);
148 s->method=s->ctx->method;
149 if (!s->method->ssl_new(s))
154 s->method->ssl_clear(s);
158 /** Used to change an SSL_CTXs default SSL method type */
159 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
161 STACK_OF(SSL_CIPHER) *sk;
165 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
166 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
167 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
169 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
175 SSL *SSL_new(SSL_CTX *ctx)
181 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
184 if (ctx->method == NULL)
186 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
190 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
191 if (s == NULL) goto err;
192 memset(s,0,sizeof(SSL));
194 #ifndef OPENSSL_NO_KRB5
195 s->kssl_ctx = kssl_ctx_new();
196 #endif /* OPENSSL_NO_KRB5 */
198 if (ctx->cert != NULL)
200 /* Earlier library versions used to copy the pointer to
201 * the CERT, not its contents; only when setting new
202 * parameters for the per-SSL copy, ssl_cert_new would be
203 * called (and the direct reference to the per-SSL_CTX
204 * settings would be lost, but those still were indirectly
205 * accessed for various purposes, and for that reason they
206 * used to be known as s->ctx->default_cert).
207 * Now we don't look at the SSL_CTX's CERT after having
208 * duplicated it once. */
210 s->cert = ssl_cert_dup(ctx->cert);
215 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
216 s->sid_ctx_length=ctx->sid_ctx_length;
217 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
218 s->verify_mode=ctx->verify_mode;
219 s->verify_depth=ctx->verify_depth;
220 s->verify_callback=ctx->default_verify_callback;
221 s->generate_session_id=ctx->generate_session_id;
222 s->purpose = ctx->purpose;
223 s->trust = ctx->trust;
224 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
227 s->verify_result=X509_V_OK;
229 s->method=ctx->method;
231 if (!s->method->ssl_new(s))
234 s->quiet_shutdown=ctx->quiet_shutdown;
236 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
237 s->options=ctx->options;
239 s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
242 CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
249 ssl_cert_free(s->cert);
251 SSL_CTX_free(s->ctx); /* decrement reference count */
254 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
258 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
259 unsigned int sid_ctx_len)
261 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
263 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
266 ctx->sid_ctx_length=sid_ctx_len;
267 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
272 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
273 unsigned int sid_ctx_len)
275 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
277 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
280 ssl->sid_ctx_length=sid_ctx_len;
281 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
286 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
288 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
289 ctx->generate_session_id = cb;
290 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
294 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
296 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
297 ssl->generate_session_id = cb;
298 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
302 int SSL_CTX_has_matching_session_id(const SSL_CTX *ctx, const unsigned char *id,
305 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
306 * we can "construct" a session to give us the desired check - ie. to
307 * find if there's a session in the hash table that would conflict with
308 * any new session built out of this id/id_len and the ssl_version in
309 * use by this SSL_CTX. */
311 r.ssl_version = ctx->method->version;
312 r.session_id_length = id_len;
313 memcpy(r.session_id, id, id_len);
315 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
316 p = (SSL_SESSION *)lh_retrieve(ctx->sessions, &r);
317 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
321 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
323 if(X509_PURPOSE_get_by_id(purpose) == -1) {
324 SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
327 s->purpose = purpose;
331 int SSL_set_purpose(SSL *s, int purpose)
333 if(X509_PURPOSE_get_by_id(purpose) == -1) {
334 SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
337 s->purpose = purpose;
341 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
343 if(X509_TRUST_get_by_id(trust) == -1) {
344 SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
351 int SSL_set_trust(SSL *s, int trust)
353 if(X509_TRUST_get_by_id(trust) == -1) {
354 SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
361 void SSL_free(SSL *s)
368 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
376 fprintf(stderr,"SSL_free, bad reference count\n");
381 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
385 /* If the buffering BIO is in place, pop it off */
386 if (s->bbio == s->wbio)
388 s->wbio=BIO_pop(s->wbio);
394 BIO_free_all(s->rbio);
395 if ((s->wbio != NULL) && (s->wbio != s->rbio))
396 BIO_free_all(s->wbio);
398 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
400 /* add extra stuff */
401 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
402 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
404 /* Make the next call work :-) */
405 if (s->session != NULL)
407 ssl_clear_bad_session(s);
408 SSL_SESSION_free(s->session);
411 ssl_clear_cipher_ctx(s);
413 if (s->cert != NULL) ssl_cert_free(s->cert);
414 /* Free up if allocated */
416 if (s->ctx) SSL_CTX_free(s->ctx);
418 if (s->client_CA != NULL)
419 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
421 if (s->method != NULL) s->method->ssl_free(s);
426 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
428 /* If the output buffering BIO is still in place, remove it
432 if (s->wbio == s->bbio)
434 s->wbio=s->wbio->next_bio;
435 s->bbio->next_bio=NULL;
438 if ((s->rbio != NULL) && (s->rbio != rbio))
439 BIO_free_all(s->rbio);
440 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
441 BIO_free_all(s->wbio);
446 BIO *SSL_get_rbio(SSL *s)
449 BIO *SSL_get_wbio(SSL *s)
452 int SSL_get_fd(SSL *s)
458 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
464 #ifndef OPENSSL_NO_SOCK
465 int SSL_set_fd(SSL *s,int fd)
470 bio=BIO_new(BIO_s_socket());
474 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
477 BIO_set_fd(bio,fd,BIO_NOCLOSE);
478 SSL_set_bio(s,bio,bio);
484 int SSL_set_wfd(SSL *s,int fd)
489 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
490 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
492 bio=BIO_new(BIO_s_socket());
495 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
496 BIO_set_fd(bio,fd,BIO_NOCLOSE);
497 SSL_set_bio(s,SSL_get_rbio(s),bio);
500 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
506 int SSL_set_rfd(SSL *s,int fd)
511 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
512 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
514 bio=BIO_new(BIO_s_socket());
518 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
521 BIO_set_fd(bio,fd,BIO_NOCLOSE);
522 SSL_set_bio(s,bio,SSL_get_wbio(s));
525 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
533 /* return length of latest Finished message we sent, copy to 'buf' */
534 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
540 ret = s->s3->tmp.finish_md_len;
543 memcpy(buf, s->s3->tmp.finish_md, count);
548 /* return length of latest Finished message we expected, copy to 'buf' */
549 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
555 ret = s->s3->tmp.peer_finish_md_len;
558 memcpy(buf, s->s3->tmp.peer_finish_md, count);
564 int SSL_get_verify_mode(SSL *s)
566 return(s->verify_mode);
569 int SSL_get_verify_depth(SSL *s)
571 return(s->verify_depth);
574 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
576 return(s->verify_callback);
579 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
581 return(ctx->verify_mode);
584 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
586 return(ctx->verify_depth);
589 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
591 return(ctx->default_verify_callback);
594 void SSL_set_verify(SSL *s,int mode,
595 int (*callback)(int ok,X509_STORE_CTX *ctx))
598 if (callback != NULL)
599 s->verify_callback=callback;
602 void SSL_set_verify_depth(SSL *s,int depth)
604 s->verify_depth=depth;
607 void SSL_set_read_ahead(SSL *s,int yes)
612 int SSL_get_read_ahead(SSL *s)
614 return(s->read_ahead);
617 int SSL_pending(SSL *s)
619 /* SSL_pending cannot work properly if read-ahead is enabled
620 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
621 * and it is impossible to fix since SSL_pending cannot report
622 * errors that may be observed while scanning the new data.
623 * (Note that SSL_pending() is often used as a boolean value,
624 * so we'd better not return -1.)
626 return(s->method->ssl_pending(s));
629 X509 *SSL_get_peer_certificate(SSL *s)
633 if ((s == NULL) || (s->session == NULL))
638 if (r == NULL) return(r);
640 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
645 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
649 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
652 r=s->session->sess_cert->cert_chain;
654 /* If we are a client, cert_chain includes the peer's own
655 * certificate; if we are a server, it does not. */
660 /* Now in theory, since the calling process own 't' it should be safe to
661 * modify. We need to be able to read f without being hassled */
662 void SSL_copy_session_id(SSL *t,SSL *f)
666 /* Do we need to to SSL locking? */
667 SSL_set_session(t,SSL_get_session(f));
669 /* what if we are setup as SSLv2 but want to talk SSLv3 or
671 if (t->method != f->method)
673 t->method->ssl_free(t); /* cleanup current */
674 t->method=f->method; /* change method */
675 t->method->ssl_new(t); /* setup new */
681 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
686 if (tmp != NULL) ssl_cert_free(tmp);
687 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
690 /* Fix this so it checks all the valid key/cert options */
691 int SSL_CTX_check_private_key(SSL_CTX *ctx)
693 if ( (ctx == NULL) ||
694 (ctx->cert == NULL) ||
695 (ctx->cert->key->x509 == NULL))
697 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
700 if (ctx->cert->key->privatekey == NULL)
702 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
705 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
708 /* Fix this function so that it takes an optional type parameter */
709 int SSL_check_private_key(SSL *ssl)
713 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
716 if (ssl->cert == NULL)
718 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
721 if (ssl->cert->key->x509 == NULL)
723 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
726 if (ssl->cert->key->privatekey == NULL)
728 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
731 return(X509_check_private_key(ssl->cert->key->x509,
732 ssl->cert->key->privatekey));
735 int SSL_accept(SSL *s)
737 if (s->handshake_func == 0)
738 /* Not properly initialized yet */
739 SSL_set_accept_state(s);
741 return(s->method->ssl_accept(s));
744 int SSL_connect(SSL *s)
746 if (s->handshake_func == 0)
747 /* Not properly initialized yet */
748 SSL_set_connect_state(s);
750 return(s->method->ssl_connect(s));
753 long SSL_get_default_timeout(SSL *s)
755 return(s->method->get_timeout());
758 int SSL_read(SSL *s,char *buf,int num)
760 if (s->handshake_func == 0)
762 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
766 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
768 s->rwstate=SSL_NOTHING;
771 return(s->method->ssl_read(s,buf,num));
774 int SSL_peek(SSL *s,char *buf,int num)
776 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
780 return(s->method->ssl_peek(s,buf,num));
783 int SSL_write(SSL *s,const char *buf,int num)
785 if (s->handshake_func == 0)
787 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
791 if (s->shutdown & SSL_SENT_SHUTDOWN)
793 s->rwstate=SSL_NOTHING;
794 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
797 return(s->method->ssl_write(s,buf,num));
800 int SSL_shutdown(SSL *s)
802 /* Note that this function behaves differently from what one might
803 * expect. Return values are 0 for no success (yet),
804 * 1 for success; but calling it once is usually not enough,
805 * even if blocking I/O is used (see ssl3_shutdown).
808 if (s->handshake_func == 0)
810 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
814 if ((s != NULL) && !SSL_in_init(s))
815 return(s->method->ssl_shutdown(s));
820 int SSL_renegotiate(SSL *s)
823 return(s->method->ssl_renegotiate(s));
826 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
832 case SSL_CTRL_GET_READ_AHEAD:
833 return(s->read_ahead);
834 case SSL_CTRL_SET_READ_AHEAD:
838 case SSL_CTRL_OPTIONS:
839 return(s->options|=larg);
841 return(s->mode|=larg);
843 return(s->method->ssl_ctrl(s,cmd,larg,parg));
847 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
852 return(s->method->ssl_callback_ctrl(s,cmd,fp));
856 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
858 return ctx->sessions;
861 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
867 case SSL_CTRL_GET_READ_AHEAD:
868 return(ctx->read_ahead);
869 case SSL_CTRL_SET_READ_AHEAD:
871 ctx->read_ahead=larg;
874 case SSL_CTRL_SET_SESS_CACHE_SIZE:
875 l=ctx->session_cache_size;
876 ctx->session_cache_size=larg;
878 case SSL_CTRL_GET_SESS_CACHE_SIZE:
879 return(ctx->session_cache_size);
880 case SSL_CTRL_SET_SESS_CACHE_MODE:
881 l=ctx->session_cache_mode;
882 ctx->session_cache_mode=larg;
884 case SSL_CTRL_GET_SESS_CACHE_MODE:
885 return(ctx->session_cache_mode);
887 case SSL_CTRL_SESS_NUMBER:
888 return(ctx->sessions->num_items);
889 case SSL_CTRL_SESS_CONNECT:
890 return(ctx->stats.sess_connect);
891 case SSL_CTRL_SESS_CONNECT_GOOD:
892 return(ctx->stats.sess_connect_good);
893 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
894 return(ctx->stats.sess_connect_renegotiate);
895 case SSL_CTRL_SESS_ACCEPT:
896 return(ctx->stats.sess_accept);
897 case SSL_CTRL_SESS_ACCEPT_GOOD:
898 return(ctx->stats.sess_accept_good);
899 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
900 return(ctx->stats.sess_accept_renegotiate);
901 case SSL_CTRL_SESS_HIT:
902 return(ctx->stats.sess_hit);
903 case SSL_CTRL_SESS_CB_HIT:
904 return(ctx->stats.sess_cb_hit);
905 case SSL_CTRL_SESS_MISSES:
906 return(ctx->stats.sess_miss);
907 case SSL_CTRL_SESS_TIMEOUTS:
908 return(ctx->stats.sess_timeout);
909 case SSL_CTRL_SESS_CACHE_FULL:
910 return(ctx->stats.sess_cache_full);
911 case SSL_CTRL_OPTIONS:
912 return(ctx->options|=larg);
914 return(ctx->mode|=larg);
916 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
920 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
925 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
929 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
937 return((l > 0)?1:-1);
940 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
941 const SSL_CIPHER * const *bp)
945 l=(*ap)->id-(*bp)->id;
949 return((l > 0)?1:-1);
952 /** return a STACK of the ciphers available for the SSL and in order of
954 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
956 if ((s != NULL) && (s->cipher_list != NULL))
958 return(s->cipher_list);
960 else if ((s->ctx != NULL) &&
961 (s->ctx->cipher_list != NULL))
963 return(s->ctx->cipher_list);
968 /** return a STACK of the ciphers available for the SSL and in order of
970 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
972 if ((s != NULL) && (s->cipher_list_by_id != NULL))
974 return(s->cipher_list_by_id);
976 else if ((s != NULL) && (s->ctx != NULL) &&
977 (s->ctx->cipher_list_by_id != NULL))
979 return(s->ctx->cipher_list_by_id);
984 /** The old interface to get the same thing as SSL_get_ciphers() */
985 const char *SSL_get_cipher_list(SSL *s,int n)
988 STACK_OF(SSL_CIPHER) *sk;
990 if (s == NULL) return(NULL);
991 sk=SSL_get_ciphers(s);
992 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
994 c=sk_SSL_CIPHER_value(sk,n);
995 if (c == NULL) return(NULL);
999 /** specify the ciphers to be used by default by the SSL_CTX */
1000 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1002 STACK_OF(SSL_CIPHER) *sk;
1004 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1005 &ctx->cipher_list_by_id,str);
1007 return((sk == NULL)?0:1);
1010 /** specify the ciphers to be used by the SSL */
1011 int SSL_set_cipher_list(SSL *s,const char *str)
1013 STACK_OF(SSL_CIPHER) *sk;
1015 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1016 &s->cipher_list_by_id,str);
1018 return((sk == NULL)?0:1);
1021 /* works well for SSLv2, not so good for SSLv3 */
1022 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1026 STACK_OF(SSL_CIPHER) *sk;
1030 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1035 sk=s->session->ciphers;
1036 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1038 /* Decrement for either the ':' or a '\0' */
1040 c=sk_SSL_CIPHER_value(sk,i);
1041 for (cp=c->name; *cp; )
1057 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1063 if (sk == NULL) return(0);
1066 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1068 c=sk_SSL_CIPHER_value(sk,i);
1069 j=ssl_put_cipher_by_char(s,c,p);
1075 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1076 STACK_OF(SSL_CIPHER) **skp)
1079 STACK_OF(SSL_CIPHER) *sk;
1082 n=ssl_put_cipher_by_char(s,NULL,NULL);
1085 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1088 if ((skp == NULL) || (*skp == NULL))
1089 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1093 sk_SSL_CIPHER_zero(sk);
1096 for (i=0; i<num; i+=n)
1098 c=ssl_get_cipher_by_char(s,p);
1102 if (!sk_SSL_CIPHER_push(sk,c))
1104 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1114 if ((skp == NULL) || (*skp == NULL))
1115 sk_SSL_CIPHER_free(sk);
1119 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1124 ((unsigned int) a->session_id[0] )|
1125 ((unsigned int) a->session_id[1]<< 8L)|
1126 ((unsigned long)a->session_id[2]<<16L)|
1127 ((unsigned long)a->session_id[3]<<24L);
1131 /* NB: If this function (or indeed the hash function which uses a sort of
1132 * coarser function than this one) is changed, ensure
1133 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1134 * able to construct an SSL_SESSION that will collide with any existing session
1135 * with a matching session ID. */
1136 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1138 if (a->ssl_version != b->ssl_version)
1140 if (a->session_id_length != b->session_id_length)
1142 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1145 /* These wrapper functions should remain rather than redeclaring
1146 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1147 * variable. The reason is that the functions aren't static, they're exposed via
1149 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1150 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1152 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1158 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1162 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1164 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1167 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1171 memset(ret,0,sizeof(SSL_CTX));
1175 ret->cert_store=NULL;
1176 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1177 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1178 ret->session_cache_head=NULL;
1179 ret->session_cache_tail=NULL;
1181 /* We take the system default */
1182 ret->session_timeout=meth->get_timeout();
1184 ret->new_session_cb=NULL;
1185 ret->remove_session_cb=NULL;
1186 ret->get_session_cb=NULL;
1187 ret->generate_session_id=NULL;
1189 memset((char *)&ret->stats,0,sizeof(ret->stats));
1192 ret->quiet_shutdown=0;
1194 /* ret->cipher=NULL;*/
1195 /* ret->s2->challenge=NULL;
1196 ret->master_key=NULL;
1198 ret->s2->conn_id=NULL; */
1200 ret->info_callback=NULL;
1202 ret->app_verify_callback=NULL;
1203 ret->app_verify_arg=NULL;
1206 ret->verify_mode=SSL_VERIFY_NONE;
1207 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1208 ret->default_verify_callback=NULL;
1209 if ((ret->cert=ssl_cert_new()) == NULL)
1212 ret->default_passwd_callback=NULL;
1213 ret->default_passwd_callback_userdata=NULL;
1214 ret->client_cert_cb=NULL;
1216 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1217 LHASH_COMP_FN(SSL_SESSION_cmp));
1218 if (ret->sessions == NULL) goto err;
1219 ret->cert_store=X509_STORE_new();
1220 if (ret->cert_store == NULL) goto err;
1222 ssl_create_cipher_list(ret->method,
1223 &ret->cipher_list,&ret->cipher_list_by_id,
1224 SSL_DEFAULT_CIPHER_LIST);
1225 if (ret->cipher_list == NULL
1226 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1228 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1232 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1234 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1237 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1239 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1242 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1244 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1248 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1251 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1253 ret->extra_certs=NULL;
1254 ret->comp_methods=SSL_COMP_get_compression_methods();
1258 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1260 if (ret != NULL) SSL_CTX_free(ret);
1265 static void SSL_COMP_free(SSL_COMP *comp)
1266 { OPENSSL_free(comp); }
1269 void SSL_CTX_free(SSL_CTX *a)
1273 if (a == NULL) return;
1275 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1277 REF_PRINT("SSL_CTX",a);
1283 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1287 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1289 if (a->sessions != NULL)
1291 SSL_CTX_flush_sessions(a,0);
1292 lh_free(a->sessions);
1294 if (a->cert_store != NULL)
1295 X509_STORE_free(a->cert_store);
1296 if (a->cipher_list != NULL)
1297 sk_SSL_CIPHER_free(a->cipher_list);
1298 if (a->cipher_list_by_id != NULL)
1299 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1300 if (a->cert != NULL)
1301 ssl_cert_free(a->cert);
1302 if (a->client_CA != NULL)
1303 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1304 if (a->extra_certs != NULL)
1305 sk_X509_pop_free(a->extra_certs,X509_free);
1306 #if 0 /* This should never be done, since it removes a global database */
1307 if (a->comp_methods != NULL)
1308 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1310 a->comp_methods = NULL;
1315 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1317 ctx->default_passwd_callback=cb;
1320 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1322 ctx->default_passwd_callback_userdata=u;
1325 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1328 * int (*cb)(X509_STORE_CTX *),
1330 * int (*cb)(X509_STORE_CTX *, void *arg)
1332 ctx->app_verify_callback=cb;
1333 ctx->app_verify_arg=arg; /* never used */
1336 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1338 ctx->verify_mode=mode;
1339 ctx->default_verify_callback=cb;
1340 /* This needs cleaning up EAY EAY EAY */
1341 X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1344 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1346 ctx->verify_depth=depth;
1349 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1352 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1353 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1354 int rsa_tmp_export,dh_tmp_export,kl;
1355 unsigned long mask,emask;
1357 if (c == NULL) return;
1359 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1361 #ifndef OPENSSL_NO_RSA
1362 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1363 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1364 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1366 rsa_tmp=rsa_tmp_export=0;
1368 #ifndef OPENSSL_NO_DH
1369 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1370 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1371 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1373 dh_tmp=dh_tmp_export=0;
1376 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1377 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1378 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1379 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1380 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1381 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1382 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1383 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1384 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1385 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1386 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1387 /* FIX THIS EAY EAY EAY */
1388 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1389 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1395 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1396 rsa_tmp,rsa_tmp_export,dh_tmp,
1397 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1400 if (rsa_enc || (rsa_tmp && rsa_sign))
1402 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1406 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1407 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1408 (rsa_enc || rsa_sign || dsa_sign))
1410 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1411 (rsa_enc || rsa_sign || dsa_sign))
1421 if (dh_rsa) mask|=SSL_kDHr;
1422 if (dh_rsa_export) emask|=SSL_kDHr;
1424 if (dh_dsa) mask|=SSL_kDHd;
1425 if (dh_dsa_export) emask|=SSL_kDHd;
1427 if (rsa_enc || rsa_sign)
1442 #ifndef OPENSSL_NO_KRB5
1443 mask|=SSL_kKRB5|SSL_aKRB5;
1444 emask|=SSL_kKRB5|SSL_aKRB5;
1448 c->export_mask=emask;
1452 /* THIS NEEDS CLEANING UP */
1453 X509 *ssl_get_server_send_cert(SSL *s)
1455 unsigned long alg,mask,kalg;
1460 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1461 alg=s->s3->tmp.new_cipher->algorithms;
1462 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1463 mask=is_export?c->export_mask:c->mask;
1464 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1466 if (kalg & SSL_kDHr)
1468 else if (kalg & SSL_kDHd)
1470 else if (kalg & SSL_aDSS)
1471 i=SSL_PKEY_DSA_SIGN;
1472 else if (kalg & SSL_aRSA)
1474 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1475 i=SSL_PKEY_RSA_SIGN;
1479 else if (kalg & SSL_aKRB5)
1481 /* VRS something else here? */
1484 else /* if (kalg & SSL_aNULL) */
1486 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
1489 if (c->pkeys[i].x509 == NULL) return(NULL);
1490 return(c->pkeys[i].x509);
1493 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1498 alg=cipher->algorithms;
1501 if ((alg & SSL_aDSS) &&
1502 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1503 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1504 else if (alg & SSL_aRSA)
1506 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1507 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1508 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1509 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1513 else /* if (alg & SSL_aNULL) */
1515 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
1520 void ssl_update_cache(SSL *s,int mode)
1524 /* If the session_id_length is 0, we are not supposed to cache it,
1525 * and it would be rather hard to do anyway :-) */
1526 if (s->session->session_id_length == 0) return;
1528 if ((s->ctx->session_cache_mode & mode)
1530 && SSL_CTX_add_session(s->ctx,s->session)
1531 && (s->ctx->new_session_cb != NULL))
1533 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1534 if (!s->ctx->new_session_cb(s,s->session))
1535 SSL_SESSION_free(s->session);
1538 /* auto flush every 255 connections */
1539 i=s->ctx->session_cache_mode;
1540 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1541 ((i & mode) == mode))
1543 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1544 ?s->ctx->stats.sess_connect_good
1545 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1547 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1552 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1557 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1562 if (s->method != meth)
1564 if (s->handshake_func != NULL)
1565 conn=(s->handshake_func == s->method->ssl_connect);
1567 if (s->method->version == meth->version)
1571 s->method->ssl_free(s);
1573 ret=s->method->ssl_new(s);
1577 s->handshake_func=meth->ssl_connect;
1579 s->handshake_func=meth->ssl_accept;
1584 int SSL_get_error(SSL *s,int i)
1590 if (i > 0) return(SSL_ERROR_NONE);
1592 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1593 * etc, where we do encode the error */
1594 if ((l=ERR_peek_error()) != 0)
1596 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1597 return(SSL_ERROR_SYSCALL);
1599 return(SSL_ERROR_SSL);
1602 if ((i < 0) && SSL_want_read(s))
1604 bio=SSL_get_rbio(s);
1605 if (BIO_should_read(bio))
1606 return(SSL_ERROR_WANT_READ);
1607 else if (BIO_should_write(bio))
1608 /* This one doesn't make too much sense ... We never try
1609 * to write to the rbio, and an application program where
1610 * rbio and wbio are separate couldn't even know what it
1612 * However if we ever set s->rwstate incorrectly
1613 * (so that we have SSL_want_read(s) instead of
1614 * SSL_want_write(s)) and rbio and wbio *are* the same,
1615 * this test works around that bug; so it might be safer
1617 return(SSL_ERROR_WANT_WRITE);
1618 else if (BIO_should_io_special(bio))
1620 reason=BIO_get_retry_reason(bio);
1621 if (reason == BIO_RR_CONNECT)
1622 return(SSL_ERROR_WANT_CONNECT);
1623 else if (reason == BIO_RR_ACCEPT)
1624 return(SSL_ERROR_WANT_ACCEPT);
1626 return(SSL_ERROR_SYSCALL); /* unknown */
1630 if ((i < 0) && SSL_want_write(s))
1632 bio=SSL_get_wbio(s);
1633 if (BIO_should_write(bio))
1634 return(SSL_ERROR_WANT_WRITE);
1635 else if (BIO_should_read(bio))
1636 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1637 return(SSL_ERROR_WANT_READ);
1638 else if (BIO_should_io_special(bio))
1640 reason=BIO_get_retry_reason(bio);
1641 if (reason == BIO_RR_CONNECT)
1642 return(SSL_ERROR_WANT_CONNECT);
1643 else if (reason == BIO_RR_ACCEPT)
1644 return(SSL_ERROR_WANT_ACCEPT);
1646 return(SSL_ERROR_SYSCALL);
1649 if ((i < 0) && SSL_want_x509_lookup(s))
1651 return(SSL_ERROR_WANT_X509_LOOKUP);
1656 if (s->version == SSL2_VERSION)
1658 /* assume it is the socket being closed */
1659 return(SSL_ERROR_ZERO_RETURN);
1663 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1664 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1665 return(SSL_ERROR_ZERO_RETURN);
1668 return(SSL_ERROR_SYSCALL);
1671 int SSL_do_handshake(SSL *s)
1675 if (s->handshake_func == NULL)
1677 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1681 s->method->ssl_renegotiate_check(s);
1683 if (SSL_in_init(s) || SSL_in_before(s))
1685 ret=s->handshake_func(s);
1690 /* For the next 2 functions, SSL_clear() sets shutdown and so
1691 * one of these calls will reset it */
1692 void SSL_set_accept_state(SSL *s)
1696 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1697 s->handshake_func=s->method->ssl_accept;
1698 /* clear the current cipher */
1699 ssl_clear_cipher_ctx(s);
1702 void SSL_set_connect_state(SSL *s)
1706 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1707 s->handshake_func=s->method->ssl_connect;
1708 /* clear the current cipher */
1709 ssl_clear_cipher_ctx(s);
1712 int ssl_undefined_function(SSL *s)
1714 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1718 SSL_METHOD *ssl_bad_method(int ver)
1720 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1724 const char *SSL_get_version(SSL *s)
1726 if (s->version == TLS1_VERSION)
1728 else if (s->version == SSL3_VERSION)
1730 else if (s->version == SSL2_VERSION)
1736 SSL *SSL_dup(SSL *s)
1738 STACK_OF(X509_NAME) *sk;
1743 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1746 if (s->session != NULL)
1748 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1749 SSL_copy_session_id(ret,s);
1753 /* No session has been established yet, so we have to expect
1754 * that s->cert or ret->cert will be changed later --
1755 * they should not both point to the same object,
1756 * and thus we can't use SSL_copy_session_id. */
1758 ret->method = s->method;
1759 ret->method->ssl_new(ret);
1761 if (s->cert != NULL)
1763 if (ret->cert != NULL)
1765 ssl_cert_free(ret->cert);
1767 ret->cert = ssl_cert_dup(s->cert);
1768 if (ret->cert == NULL)
1772 SSL_set_session_id_context(ret,
1773 s->sid_ctx, s->sid_ctx_length);
1776 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1777 SSL_set_verify(ret,SSL_get_verify_mode(s),
1778 SSL_get_verify_callback(s));
1779 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1781 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1783 ret->debug=s->debug;
1784 ret->options=s->options;
1786 /* copy app data, a little dangerous perhaps */
1787 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1790 /* setup rbio, and wbio */
1791 if (s->rbio != NULL)
1793 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1796 if (s->wbio != NULL)
1798 if (s->wbio != s->rbio)
1800 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1804 ret->wbio=ret->rbio;
1807 /* dup the cipher_list and cipher_list_by_id stacks */
1808 if (s->cipher_list != NULL)
1810 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1813 if (s->cipher_list_by_id != NULL)
1814 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1818 /* Dup the client_CA list */
1819 if (s->client_CA != NULL)
1821 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1823 for (i=0; i<sk_X509_NAME_num(sk); i++)
1825 xn=sk_X509_NAME_value(sk,i);
1826 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1834 ret->shutdown=s->shutdown;
1835 ret->state=s->state;
1836 ret->handshake_func=s->handshake_func;
1837 ret->server=s->server;
1842 if (ret != NULL) SSL_free(ret);
1848 void ssl_clear_cipher_ctx(SSL *s)
1850 if (s->enc_read_ctx != NULL)
1852 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1853 OPENSSL_free(s->enc_read_ctx);
1854 s->enc_read_ctx=NULL;
1856 if (s->enc_write_ctx != NULL)
1858 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1859 OPENSSL_free(s->enc_write_ctx);
1860 s->enc_write_ctx=NULL;
1862 if (s->expand != NULL)
1864 COMP_CTX_free(s->expand);
1867 if (s->compress != NULL)
1869 COMP_CTX_free(s->compress);
1874 /* Fix this function so that it takes an optional type parameter */
1875 X509 *SSL_get_certificate(SSL *s)
1877 if (s->cert != NULL)
1878 return(s->cert->key->x509);
1883 /* Fix this function so that it takes an optional type parameter */
1884 EVP_PKEY *SSL_get_privatekey(SSL *s)
1886 if (s->cert != NULL)
1887 return(s->cert->key->privatekey);
1892 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1894 if ((s->session != NULL) && (s->session->cipher != NULL))
1895 return(s->session->cipher);
1899 int ssl_init_wbio_buffer(SSL *s,int push)
1903 if (s->bbio == NULL)
1905 bbio=BIO_new(BIO_f_buffer());
1906 if (bbio == NULL) return(0);
1912 if (s->bbio == s->wbio)
1913 s->wbio=BIO_pop(s->wbio);
1915 (void)BIO_reset(bbio);
1916 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1917 if (!BIO_set_read_buffer_size(bbio,1))
1919 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1924 if (s->wbio != bbio)
1925 s->wbio=BIO_push(bbio,s->wbio);
1929 if (s->wbio == bbio)
1930 s->wbio=BIO_pop(bbio);
1935 void ssl_free_wbio_buffer(SSL *s)
1937 if (s->bbio == NULL) return;
1939 if (s->bbio == s->wbio)
1941 /* remove buffering */
1942 s->wbio=BIO_pop(s->wbio);
1943 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1944 assert(s->wbio != NULL);
1951 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1953 ctx->quiet_shutdown=mode;
1956 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1958 return(ctx->quiet_shutdown);
1961 void SSL_set_quiet_shutdown(SSL *s,int mode)
1963 s->quiet_shutdown=mode;
1966 int SSL_get_quiet_shutdown(SSL *s)
1968 return(s->quiet_shutdown);
1971 void SSL_set_shutdown(SSL *s,int mode)
1976 int SSL_get_shutdown(SSL *s)
1978 return(s->shutdown);
1981 int SSL_version(SSL *s)
1986 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1991 #ifndef OPENSSL_NO_STDIO
1992 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
1994 return(X509_STORE_set_default_paths(ctx->cert_store));
1997 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2000 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2004 void SSL_set_info_callback(SSL *ssl,void (*cb)())
2006 ssl->info_callback=cb;
2009 void (*SSL_get_info_callback(SSL *ssl))(void)
2011 return((void (*)())ssl->info_callback);
2014 int SSL_state(SSL *ssl)
2019 void SSL_set_verify_result(SSL *ssl,long arg)
2021 ssl->verify_result=arg;
2024 long SSL_get_verify_result(SSL *ssl)
2026 return(ssl->verify_result);
2029 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2030 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2033 return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
2034 &ssl_meth,argl,argp,new_func,dup_func,free_func));
2037 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2039 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2042 void *SSL_get_ex_data(SSL *s,int idx)
2044 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2047 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2048 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2051 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
2052 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
2055 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2057 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2060 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2062 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2070 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2072 return(ctx->cert_store);
2075 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2077 if (ctx->cert_store != NULL)
2078 X509_STORE_free(ctx->cert_store);
2079 ctx->cert_store=store;
2082 int SSL_want(SSL *s)
2088 * \brief Set the callback for generating temporary RSA keys.
2089 * \param ctx the SSL context.
2090 * \param cb the callback
2093 #ifndef OPENSSL_NO_RSA
2094 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2098 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2101 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2105 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2111 * \brief The RSA temporary key callback function.
2112 * \param ssl the SSL session.
2113 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2114 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2115 * of the required key in bits.
2116 * \return the temporary RSA key.
2117 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2120 RSA *cb(SSL *ssl,int is_export,int keylength)
2125 * \brief Set the callback for generating temporary DH keys.
2126 * \param ctx the SSL context.
2127 * \param dh the callback
2130 #ifndef OPENSSL_NO_DH
2131 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2134 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2137 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2140 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2144 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2145 #include "../crypto/bio/bss_file.c"
2148 IMPLEMENT_STACK_OF(SSL_CIPHER)
2149 IMPLEMENT_STACK_OF(SSL_COMP)