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 return X509_PURPOSE_set(&s->purpose, purpose);
339 int SSL_set_purpose(SSL *s, int purpose)
341 return X509_PURPOSE_set(&s->purpose, purpose);
344 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
346 return X509_TRUST_set(&s->trust, trust);
349 int SSL_set_trust(SSL *s, int trust)
351 return X509_TRUST_set(&s->trust, trust);
354 void SSL_free(SSL *s)
361 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
369 fprintf(stderr,"SSL_free, bad reference count\n");
374 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
378 /* If the buffering BIO is in place, pop it off */
379 if (s->bbio == s->wbio)
381 s->wbio=BIO_pop(s->wbio);
387 BIO_free_all(s->rbio);
388 if ((s->wbio != NULL) && (s->wbio != s->rbio))
389 BIO_free_all(s->wbio);
391 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
393 /* add extra stuff */
394 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
395 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
397 /* Make the next call work :-) */
398 if (s->session != NULL)
400 ssl_clear_bad_session(s);
401 SSL_SESSION_free(s->session);
404 ssl_clear_cipher_ctx(s);
406 if (s->cert != NULL) ssl_cert_free(s->cert);
407 /* Free up if allocated */
409 if (s->ctx) SSL_CTX_free(s->ctx);
411 if (s->client_CA != NULL)
412 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
414 if (s->method != NULL) s->method->ssl_free(s);
419 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
421 /* If the output buffering BIO is still in place, remove it
425 if (s->wbio == s->bbio)
427 s->wbio=s->wbio->next_bio;
428 s->bbio->next_bio=NULL;
431 if ((s->rbio != NULL) && (s->rbio != rbio))
432 BIO_free_all(s->rbio);
433 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
434 BIO_free_all(s->wbio);
439 BIO *SSL_get_rbio(SSL *s)
442 BIO *SSL_get_wbio(SSL *s)
445 int SSL_get_fd(SSL *s)
451 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
457 #ifndef OPENSSL_NO_SOCK
458 int SSL_set_fd(SSL *s,int fd)
463 bio=BIO_new(BIO_s_socket());
467 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
470 BIO_set_fd(bio,fd,BIO_NOCLOSE);
471 SSL_set_bio(s,bio,bio);
477 int SSL_set_wfd(SSL *s,int fd)
482 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
483 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
485 bio=BIO_new(BIO_s_socket());
488 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
489 BIO_set_fd(bio,fd,BIO_NOCLOSE);
490 SSL_set_bio(s,SSL_get_rbio(s),bio);
493 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
499 int SSL_set_rfd(SSL *s,int fd)
504 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
505 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
507 bio=BIO_new(BIO_s_socket());
511 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
514 BIO_set_fd(bio,fd,BIO_NOCLOSE);
515 SSL_set_bio(s,bio,SSL_get_wbio(s));
518 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
526 /* return length of latest Finished message we sent, copy to 'buf' */
527 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
533 ret = s->s3->tmp.finish_md_len;
536 memcpy(buf, s->s3->tmp.finish_md, count);
541 /* return length of latest Finished message we expected, copy to 'buf' */
542 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
548 ret = s->s3->tmp.peer_finish_md_len;
551 memcpy(buf, s->s3->tmp.peer_finish_md, count);
557 int SSL_get_verify_mode(SSL *s)
559 return(s->verify_mode);
562 int SSL_get_verify_depth(SSL *s)
564 return(s->verify_depth);
567 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
569 return(s->verify_callback);
572 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
574 return(ctx->verify_mode);
577 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
579 return(ctx->verify_depth);
582 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
584 return(ctx->default_verify_callback);
587 void SSL_set_verify(SSL *s,int mode,
588 int (*callback)(int ok,X509_STORE_CTX *ctx))
591 if (callback != NULL)
592 s->verify_callback=callback;
595 void SSL_set_verify_depth(SSL *s,int depth)
597 s->verify_depth=depth;
600 void SSL_set_read_ahead(SSL *s,int yes)
605 int SSL_get_read_ahead(SSL *s)
607 return(s->read_ahead);
610 int SSL_pending(SSL *s)
612 /* SSL_pending cannot work properly if read-ahead is enabled
613 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
614 * and it is impossible to fix since SSL_pending cannot report
615 * errors that may be observed while scanning the new data.
616 * (Note that SSL_pending() is often used as a boolean value,
617 * so we'd better not return -1.)
619 return(s->method->ssl_pending(s));
622 X509 *SSL_get_peer_certificate(SSL *s)
626 if ((s == NULL) || (s->session == NULL))
631 if (r == NULL) return(r);
633 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
638 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
642 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
645 r=s->session->sess_cert->cert_chain;
647 /* If we are a client, cert_chain includes the peer's own
648 * certificate; if we are a server, it does not. */
653 /* Now in theory, since the calling process own 't' it should be safe to
654 * modify. We need to be able to read f without being hassled */
655 void SSL_copy_session_id(SSL *t,SSL *f)
659 /* Do we need to to SSL locking? */
660 SSL_set_session(t,SSL_get_session(f));
662 /* what if we are setup as SSLv2 but want to talk SSLv3 or
664 if (t->method != f->method)
666 t->method->ssl_free(t); /* cleanup current */
667 t->method=f->method; /* change method */
668 t->method->ssl_new(t); /* setup new */
674 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
679 if (tmp != NULL) ssl_cert_free(tmp);
680 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
683 /* Fix this so it checks all the valid key/cert options */
684 int SSL_CTX_check_private_key(SSL_CTX *ctx)
686 if ( (ctx == NULL) ||
687 (ctx->cert == NULL) ||
688 (ctx->cert->key->x509 == NULL))
690 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
693 if (ctx->cert->key->privatekey == NULL)
695 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
698 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
701 /* Fix this function so that it takes an optional type parameter */
702 int SSL_check_private_key(SSL *ssl)
706 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
709 if (ssl->cert == NULL)
711 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
714 if (ssl->cert->key->x509 == NULL)
716 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
719 if (ssl->cert->key->privatekey == NULL)
721 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
724 return(X509_check_private_key(ssl->cert->key->x509,
725 ssl->cert->key->privatekey));
728 int SSL_accept(SSL *s)
730 if (s->handshake_func == 0)
731 /* Not properly initialized yet */
732 SSL_set_accept_state(s);
734 return(s->method->ssl_accept(s));
737 int SSL_connect(SSL *s)
739 if (s->handshake_func == 0)
740 /* Not properly initialized yet */
741 SSL_set_connect_state(s);
743 return(s->method->ssl_connect(s));
746 long SSL_get_default_timeout(SSL *s)
748 return(s->method->get_timeout());
751 int SSL_read(SSL *s,void *buf,int num)
753 if (s->handshake_func == 0)
755 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
759 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
761 s->rwstate=SSL_NOTHING;
764 return(s->method->ssl_read(s,buf,num));
767 int SSL_peek(SSL *s,void *buf,int num)
769 if (s->handshake_func == 0)
771 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
775 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
779 return(s->method->ssl_peek(s,buf,num));
782 int SSL_write(SSL *s,const void *buf,int num)
784 if (s->handshake_func == 0)
786 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
790 if (s->shutdown & SSL_SENT_SHUTDOWN)
792 s->rwstate=SSL_NOTHING;
793 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
796 return(s->method->ssl_write(s,buf,num));
799 int SSL_shutdown(SSL *s)
801 /* Note that this function behaves differently from what one might
802 * expect. Return values are 0 for no success (yet),
803 * 1 for success; but calling it once is usually not enough,
804 * even if blocking I/O is used (see ssl3_shutdown).
807 if (s->handshake_func == 0)
809 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
813 if ((s != NULL) && !SSL_in_init(s))
814 return(s->method->ssl_shutdown(s));
819 int SSL_renegotiate(SSL *s)
822 return(s->method->ssl_renegotiate(s));
825 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
831 case SSL_CTRL_GET_READ_AHEAD:
832 return(s->read_ahead);
833 case SSL_CTRL_SET_READ_AHEAD:
837 case SSL_CTRL_OPTIONS:
838 return(s->options|=larg);
840 return(s->mode|=larg);
842 return(s->method->ssl_ctrl(s,cmd,larg,parg));
846 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
851 return(s->method->ssl_callback_ctrl(s,cmd,fp));
855 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
857 return ctx->sessions;
860 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
866 case SSL_CTRL_GET_READ_AHEAD:
867 return(ctx->read_ahead);
868 case SSL_CTRL_SET_READ_AHEAD:
870 ctx->read_ahead=larg;
873 case SSL_CTRL_SET_SESS_CACHE_SIZE:
874 l=ctx->session_cache_size;
875 ctx->session_cache_size=larg;
877 case SSL_CTRL_GET_SESS_CACHE_SIZE:
878 return(ctx->session_cache_size);
879 case SSL_CTRL_SET_SESS_CACHE_MODE:
880 l=ctx->session_cache_mode;
881 ctx->session_cache_mode=larg;
883 case SSL_CTRL_GET_SESS_CACHE_MODE:
884 return(ctx->session_cache_mode);
886 case SSL_CTRL_SESS_NUMBER:
887 return(ctx->sessions->num_items);
888 case SSL_CTRL_SESS_CONNECT:
889 return(ctx->stats.sess_connect);
890 case SSL_CTRL_SESS_CONNECT_GOOD:
891 return(ctx->stats.sess_connect_good);
892 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
893 return(ctx->stats.sess_connect_renegotiate);
894 case SSL_CTRL_SESS_ACCEPT:
895 return(ctx->stats.sess_accept);
896 case SSL_CTRL_SESS_ACCEPT_GOOD:
897 return(ctx->stats.sess_accept_good);
898 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
899 return(ctx->stats.sess_accept_renegotiate);
900 case SSL_CTRL_SESS_HIT:
901 return(ctx->stats.sess_hit);
902 case SSL_CTRL_SESS_CB_HIT:
903 return(ctx->stats.sess_cb_hit);
904 case SSL_CTRL_SESS_MISSES:
905 return(ctx->stats.sess_miss);
906 case SSL_CTRL_SESS_TIMEOUTS:
907 return(ctx->stats.sess_timeout);
908 case SSL_CTRL_SESS_CACHE_FULL:
909 return(ctx->stats.sess_cache_full);
910 case SSL_CTRL_OPTIONS:
911 return(ctx->options|=larg);
913 return(ctx->mode|=larg);
915 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
919 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
924 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
928 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
936 return((l > 0)?1:-1);
939 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
940 const SSL_CIPHER * const *bp)
944 l=(*ap)->id-(*bp)->id;
948 return((l > 0)?1:-1);
951 /** return a STACK of the ciphers available for the SSL and in order of
953 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
955 if ((s != NULL) && (s->cipher_list != NULL))
957 return(s->cipher_list);
959 else if ((s->ctx != NULL) &&
960 (s->ctx->cipher_list != NULL))
962 return(s->ctx->cipher_list);
967 /** return a STACK of the ciphers available for the SSL and in order of
969 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
971 if ((s != NULL) && (s->cipher_list_by_id != NULL))
973 return(s->cipher_list_by_id);
975 else if ((s != NULL) && (s->ctx != NULL) &&
976 (s->ctx->cipher_list_by_id != NULL))
978 return(s->ctx->cipher_list_by_id);
983 /** The old interface to get the same thing as SSL_get_ciphers() */
984 const char *SSL_get_cipher_list(SSL *s,int n)
987 STACK_OF(SSL_CIPHER) *sk;
989 if (s == NULL) return(NULL);
990 sk=SSL_get_ciphers(s);
991 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
993 c=sk_SSL_CIPHER_value(sk,n);
994 if (c == NULL) return(NULL);
998 /** specify the ciphers to be used by default by the SSL_CTX */
999 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1001 STACK_OF(SSL_CIPHER) *sk;
1003 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1004 &ctx->cipher_list_by_id,str);
1006 return((sk == NULL)?0:1);
1009 /** specify the ciphers to be used by the SSL */
1010 int SSL_set_cipher_list(SSL *s,const char *str)
1012 STACK_OF(SSL_CIPHER) *sk;
1014 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1015 &s->cipher_list_by_id,str);
1017 return((sk == NULL)?0:1);
1020 /* works well for SSLv2, not so good for SSLv3 */
1021 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1025 STACK_OF(SSL_CIPHER) *sk;
1029 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1034 sk=s->session->ciphers;
1035 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1037 /* Decrement for either the ':' or a '\0' */
1039 c=sk_SSL_CIPHER_value(sk,i);
1040 for (cp=c->name; *cp; )
1056 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1062 if (sk == NULL) return(0);
1065 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1067 c=sk_SSL_CIPHER_value(sk,i);
1068 j=ssl_put_cipher_by_char(s,c,p);
1074 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1075 STACK_OF(SSL_CIPHER) **skp)
1078 STACK_OF(SSL_CIPHER) *sk;
1081 n=ssl_put_cipher_by_char(s,NULL,NULL);
1084 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1087 if ((skp == NULL) || (*skp == NULL))
1088 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1092 sk_SSL_CIPHER_zero(sk);
1095 for (i=0; i<num; i+=n)
1097 c=ssl_get_cipher_by_char(s,p);
1101 if (!sk_SSL_CIPHER_push(sk,c))
1103 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1113 if ((skp == NULL) || (*skp == NULL))
1114 sk_SSL_CIPHER_free(sk);
1118 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1123 ((unsigned int) a->session_id[0] )|
1124 ((unsigned int) a->session_id[1]<< 8L)|
1125 ((unsigned long)a->session_id[2]<<16L)|
1126 ((unsigned long)a->session_id[3]<<24L);
1130 /* NB: If this function (or indeed the hash function which uses a sort of
1131 * coarser function than this one) is changed, ensure
1132 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1133 * able to construct an SSL_SESSION that will collide with any existing session
1134 * with a matching session ID. */
1135 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1137 if (a->ssl_version != b->ssl_version)
1139 if (a->session_id_length != b->session_id_length)
1141 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1144 /* These wrapper functions should remain rather than redeclaring
1145 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1146 * variable. The reason is that the functions aren't static, they're exposed via
1148 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1149 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1151 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1157 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1161 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1163 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1166 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1170 memset(ret,0,sizeof(SSL_CTX));
1174 ret->cert_store=NULL;
1175 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1176 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1177 ret->session_cache_head=NULL;
1178 ret->session_cache_tail=NULL;
1180 /* We take the system default */
1181 ret->session_timeout=meth->get_timeout();
1183 ret->new_session_cb=NULL;
1184 ret->remove_session_cb=NULL;
1185 ret->get_session_cb=NULL;
1186 ret->generate_session_id=NULL;
1188 memset((char *)&ret->stats,0,sizeof(ret->stats));
1191 ret->quiet_shutdown=0;
1193 /* ret->cipher=NULL;*/
1194 /* ret->s2->challenge=NULL;
1195 ret->master_key=NULL;
1197 ret->s2->conn_id=NULL; */
1199 ret->info_callback=NULL;
1201 ret->app_verify_callback=NULL;
1202 ret->app_verify_arg=NULL;
1205 ret->verify_mode=SSL_VERIFY_NONE;
1206 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1207 ret->default_verify_callback=NULL;
1208 if ((ret->cert=ssl_cert_new()) == NULL)
1211 ret->default_passwd_callback=NULL;
1212 ret->default_passwd_callback_userdata=NULL;
1213 ret->client_cert_cb=NULL;
1215 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1216 LHASH_COMP_FN(SSL_SESSION_cmp));
1217 if (ret->sessions == NULL) goto err;
1218 ret->cert_store=X509_STORE_new();
1219 if (ret->cert_store == NULL) goto err;
1221 ssl_create_cipher_list(ret->method,
1222 &ret->cipher_list,&ret->cipher_list_by_id,
1223 SSL_DEFAULT_CIPHER_LIST);
1224 if (ret->cipher_list == NULL
1225 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1227 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1231 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1233 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1236 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1238 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1241 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1243 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1247 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1250 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1252 ret->extra_certs=NULL;
1253 ret->comp_methods=SSL_COMP_get_compression_methods();
1257 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1259 if (ret != NULL) SSL_CTX_free(ret);
1264 static void SSL_COMP_free(SSL_COMP *comp)
1265 { OPENSSL_free(comp); }
1268 void SSL_CTX_free(SSL_CTX *a)
1272 if (a == NULL) return;
1274 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1276 REF_PRINT("SSL_CTX",a);
1282 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1286 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1288 if (a->sessions != NULL)
1290 SSL_CTX_flush_sessions(a,0);
1291 lh_free(a->sessions);
1293 if (a->cert_store != NULL)
1294 X509_STORE_free(a->cert_store);
1295 if (a->cipher_list != NULL)
1296 sk_SSL_CIPHER_free(a->cipher_list);
1297 if (a->cipher_list_by_id != NULL)
1298 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1299 if (a->cert != NULL)
1300 ssl_cert_free(a->cert);
1301 if (a->client_CA != NULL)
1302 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1303 if (a->extra_certs != NULL)
1304 sk_X509_pop_free(a->extra_certs,X509_free);
1305 #if 0 /* This should never be done, since it removes a global database */
1306 if (a->comp_methods != NULL)
1307 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1309 a->comp_methods = NULL;
1314 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1316 ctx->default_passwd_callback=cb;
1319 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1321 ctx->default_passwd_callback_userdata=u;
1324 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1327 * int (*cb)(X509_STORE_CTX *),
1329 * int (*cb)(X509_STORE_CTX *, void *arg)
1331 ctx->app_verify_callback=cb;
1332 ctx->app_verify_arg=arg; /* never used */
1335 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1337 ctx->verify_mode=mode;
1338 ctx->default_verify_callback=cb;
1339 /* This needs cleaning up EAY EAY EAY */
1340 X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1343 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1345 ctx->verify_depth=depth;
1348 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1351 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1352 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1353 int rsa_tmp_export,dh_tmp_export,kl;
1354 unsigned long mask,emask;
1356 if (c == NULL) return;
1358 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1360 #ifndef OPENSSL_NO_RSA
1361 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1362 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1363 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1365 rsa_tmp=rsa_tmp_export=0;
1367 #ifndef OPENSSL_NO_DH
1368 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1369 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1370 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1372 dh_tmp=dh_tmp_export=0;
1375 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1376 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1377 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1378 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1379 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1380 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1381 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1382 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1383 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1384 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1385 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1386 /* FIX THIS EAY EAY EAY */
1387 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1388 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1394 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1395 rsa_tmp,rsa_tmp_export,dh_tmp,
1396 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1399 if (rsa_enc || (rsa_tmp && rsa_sign))
1401 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1405 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1406 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1407 (rsa_enc || rsa_sign || dsa_sign))
1409 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1410 (rsa_enc || rsa_sign || dsa_sign))
1420 if (dh_rsa) mask|=SSL_kDHr;
1421 if (dh_rsa_export) emask|=SSL_kDHr;
1423 if (dh_dsa) mask|=SSL_kDHd;
1424 if (dh_dsa_export) emask|=SSL_kDHd;
1426 if (rsa_enc || rsa_sign)
1441 #ifndef OPENSSL_NO_KRB5
1442 mask|=SSL_kKRB5|SSL_aKRB5;
1443 emask|=SSL_kKRB5|SSL_aKRB5;
1447 c->export_mask=emask;
1451 /* THIS NEEDS CLEANING UP */
1452 X509 *ssl_get_server_send_cert(SSL *s)
1454 unsigned long alg,mask,kalg;
1459 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1460 alg=s->s3->tmp.new_cipher->algorithms;
1461 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1462 mask=is_export?c->export_mask:c->mask;
1463 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1465 if (kalg & SSL_kDHr)
1467 else if (kalg & SSL_kDHd)
1469 else if (kalg & SSL_aDSS)
1470 i=SSL_PKEY_DSA_SIGN;
1471 else if (kalg & SSL_aRSA)
1473 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1474 i=SSL_PKEY_RSA_SIGN;
1478 else if (kalg & SSL_aKRB5)
1480 /* VRS something else here? */
1483 else /* if (kalg & SSL_aNULL) */
1485 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1488 if (c->pkeys[i].x509 == NULL) return(NULL);
1489 return(c->pkeys[i].x509);
1492 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1497 alg=cipher->algorithms;
1500 if ((alg & SSL_aDSS) &&
1501 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1502 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1503 else if (alg & SSL_aRSA)
1505 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1506 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1507 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1508 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1512 else /* if (alg & SSL_aNULL) */
1514 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1519 void ssl_update_cache(SSL *s,int mode)
1523 /* If the session_id_length is 0, we are not supposed to cache it,
1524 * and it would be rather hard to do anyway :-) */
1525 if (s->session->session_id_length == 0) return;
1527 if ((s->ctx->session_cache_mode & mode)
1529 && SSL_CTX_add_session(s->ctx,s->session)
1530 && (s->ctx->new_session_cb != NULL))
1532 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1533 if (!s->ctx->new_session_cb(s,s->session))
1534 SSL_SESSION_free(s->session);
1537 /* auto flush every 255 connections */
1538 i=s->ctx->session_cache_mode;
1539 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1540 ((i & mode) == mode))
1542 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1543 ?s->ctx->stats.sess_connect_good
1544 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1546 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1551 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1556 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1561 if (s->method != meth)
1563 if (s->handshake_func != NULL)
1564 conn=(s->handshake_func == s->method->ssl_connect);
1566 if (s->method->version == meth->version)
1570 s->method->ssl_free(s);
1572 ret=s->method->ssl_new(s);
1576 s->handshake_func=meth->ssl_connect;
1578 s->handshake_func=meth->ssl_accept;
1583 int SSL_get_error(SSL *s,int i)
1589 if (i > 0) return(SSL_ERROR_NONE);
1591 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1592 * etc, where we do encode the error */
1593 if ((l=ERR_peek_error()) != 0)
1595 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1596 return(SSL_ERROR_SYSCALL);
1598 return(SSL_ERROR_SSL);
1601 if ((i < 0) && SSL_want_read(s))
1603 bio=SSL_get_rbio(s);
1604 if (BIO_should_read(bio))
1605 return(SSL_ERROR_WANT_READ);
1606 else if (BIO_should_write(bio))
1607 /* This one doesn't make too much sense ... We never try
1608 * to write to the rbio, and an application program where
1609 * rbio and wbio are separate couldn't even know what it
1611 * However if we ever set s->rwstate incorrectly
1612 * (so that we have SSL_want_read(s) instead of
1613 * SSL_want_write(s)) and rbio and wbio *are* the same,
1614 * this test works around that bug; so it might be safer
1616 return(SSL_ERROR_WANT_WRITE);
1617 else if (BIO_should_io_special(bio))
1619 reason=BIO_get_retry_reason(bio);
1620 if (reason == BIO_RR_CONNECT)
1621 return(SSL_ERROR_WANT_CONNECT);
1622 else if (reason == BIO_RR_ACCEPT)
1623 return(SSL_ERROR_WANT_ACCEPT);
1625 return(SSL_ERROR_SYSCALL); /* unknown */
1629 if ((i < 0) && SSL_want_write(s))
1631 bio=SSL_get_wbio(s);
1632 if (BIO_should_write(bio))
1633 return(SSL_ERROR_WANT_WRITE);
1634 else if (BIO_should_read(bio))
1635 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1636 return(SSL_ERROR_WANT_READ);
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);
1648 if ((i < 0) && SSL_want_x509_lookup(s))
1650 return(SSL_ERROR_WANT_X509_LOOKUP);
1655 if (s->version == SSL2_VERSION)
1657 /* assume it is the socket being closed */
1658 return(SSL_ERROR_ZERO_RETURN);
1662 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1663 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1664 return(SSL_ERROR_ZERO_RETURN);
1667 return(SSL_ERROR_SYSCALL);
1670 int SSL_do_handshake(SSL *s)
1674 if (s->handshake_func == NULL)
1676 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1680 s->method->ssl_renegotiate_check(s);
1682 if (SSL_in_init(s) || SSL_in_before(s))
1684 ret=s->handshake_func(s);
1689 /* For the next 2 functions, SSL_clear() sets shutdown and so
1690 * one of these calls will reset it */
1691 void SSL_set_accept_state(SSL *s)
1695 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1696 s->handshake_func=s->method->ssl_accept;
1697 /* clear the current cipher */
1698 ssl_clear_cipher_ctx(s);
1701 void SSL_set_connect_state(SSL *s)
1705 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1706 s->handshake_func=s->method->ssl_connect;
1707 /* clear the current cipher */
1708 ssl_clear_cipher_ctx(s);
1711 int ssl_undefined_function(SSL *s)
1713 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1717 SSL_METHOD *ssl_bad_method(int ver)
1719 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1723 const char *SSL_get_version(SSL *s)
1725 if (s->version == TLS1_VERSION)
1727 else if (s->version == SSL3_VERSION)
1729 else if (s->version == SSL2_VERSION)
1735 SSL *SSL_dup(SSL *s)
1737 STACK_OF(X509_NAME) *sk;
1742 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1745 if (s->session != NULL)
1747 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1748 SSL_copy_session_id(ret,s);
1752 /* No session has been established yet, so we have to expect
1753 * that s->cert or ret->cert will be changed later --
1754 * they should not both point to the same object,
1755 * and thus we can't use SSL_copy_session_id. */
1757 ret->method = s->method;
1758 ret->method->ssl_new(ret);
1760 if (s->cert != NULL)
1762 if (ret->cert != NULL)
1764 ssl_cert_free(ret->cert);
1766 ret->cert = ssl_cert_dup(s->cert);
1767 if (ret->cert == NULL)
1771 SSL_set_session_id_context(ret,
1772 s->sid_ctx, s->sid_ctx_length);
1775 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1776 SSL_set_verify(ret,SSL_get_verify_mode(s),
1777 SSL_get_verify_callback(s));
1778 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1780 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1782 ret->debug=s->debug;
1783 ret->options=s->options;
1785 /* copy app data, a little dangerous perhaps */
1786 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1789 /* setup rbio, and wbio */
1790 if (s->rbio != NULL)
1792 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1795 if (s->wbio != NULL)
1797 if (s->wbio != s->rbio)
1799 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1803 ret->wbio=ret->rbio;
1806 /* dup the cipher_list and cipher_list_by_id stacks */
1807 if (s->cipher_list != NULL)
1809 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1812 if (s->cipher_list_by_id != NULL)
1813 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1817 /* Dup the client_CA list */
1818 if (s->client_CA != NULL)
1820 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1822 for (i=0; i<sk_X509_NAME_num(sk); i++)
1824 xn=sk_X509_NAME_value(sk,i);
1825 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1833 ret->shutdown=s->shutdown;
1834 ret->state=s->state;
1835 ret->handshake_func=s->handshake_func;
1836 ret->server=s->server;
1841 if (ret != NULL) SSL_free(ret);
1847 void ssl_clear_cipher_ctx(SSL *s)
1849 if (s->enc_read_ctx != NULL)
1851 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1852 OPENSSL_free(s->enc_read_ctx);
1853 s->enc_read_ctx=NULL;
1855 if (s->enc_write_ctx != NULL)
1857 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1858 OPENSSL_free(s->enc_write_ctx);
1859 s->enc_write_ctx=NULL;
1861 if (s->expand != NULL)
1863 COMP_CTX_free(s->expand);
1866 if (s->compress != NULL)
1868 COMP_CTX_free(s->compress);
1873 /* Fix this function so that it takes an optional type parameter */
1874 X509 *SSL_get_certificate(SSL *s)
1876 if (s->cert != NULL)
1877 return(s->cert->key->x509);
1882 /* Fix this function so that it takes an optional type parameter */
1883 EVP_PKEY *SSL_get_privatekey(SSL *s)
1885 if (s->cert != NULL)
1886 return(s->cert->key->privatekey);
1891 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1893 if ((s->session != NULL) && (s->session->cipher != NULL))
1894 return(s->session->cipher);
1898 int ssl_init_wbio_buffer(SSL *s,int push)
1902 if (s->bbio == NULL)
1904 bbio=BIO_new(BIO_f_buffer());
1905 if (bbio == NULL) return(0);
1911 if (s->bbio == s->wbio)
1912 s->wbio=BIO_pop(s->wbio);
1914 (void)BIO_reset(bbio);
1915 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1916 if (!BIO_set_read_buffer_size(bbio,1))
1918 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1923 if (s->wbio != bbio)
1924 s->wbio=BIO_push(bbio,s->wbio);
1928 if (s->wbio == bbio)
1929 s->wbio=BIO_pop(bbio);
1934 void ssl_free_wbio_buffer(SSL *s)
1936 if (s->bbio == NULL) return;
1938 if (s->bbio == s->wbio)
1940 /* remove buffering */
1941 s->wbio=BIO_pop(s->wbio);
1942 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1943 assert(s->wbio != NULL);
1950 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1952 ctx->quiet_shutdown=mode;
1955 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1957 return(ctx->quiet_shutdown);
1960 void SSL_set_quiet_shutdown(SSL *s,int mode)
1962 s->quiet_shutdown=mode;
1965 int SSL_get_quiet_shutdown(SSL *s)
1967 return(s->quiet_shutdown);
1970 void SSL_set_shutdown(SSL *s,int mode)
1975 int SSL_get_shutdown(SSL *s)
1977 return(s->shutdown);
1980 int SSL_version(SSL *s)
1985 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1990 #ifndef OPENSSL_NO_STDIO
1991 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
1993 return(X509_STORE_set_default_paths(ctx->cert_store));
1996 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
1999 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2003 void SSL_set_info_callback(SSL *ssl,void (*cb)())
2005 ssl->info_callback=cb;
2008 void (*SSL_get_info_callback(SSL *ssl))(void)
2010 return((void (*)())ssl->info_callback);
2013 int SSL_state(SSL *ssl)
2018 void SSL_set_verify_result(SSL *ssl,long arg)
2020 ssl->verify_result=arg;
2023 long SSL_get_verify_result(SSL *ssl)
2025 return(ssl->verify_result);
2028 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2029 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2032 return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
2033 &ssl_meth,argl,argp,new_func,dup_func,free_func));
2036 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2038 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2041 void *SSL_get_ex_data(SSL *s,int idx)
2043 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2046 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2047 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2050 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
2051 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
2054 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2056 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2059 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2061 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2069 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2071 return(ctx->cert_store);
2074 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2076 if (ctx->cert_store != NULL)
2077 X509_STORE_free(ctx->cert_store);
2078 ctx->cert_store=store;
2081 int SSL_want(SSL *s)
2087 * \brief Set the callback for generating temporary RSA keys.
2088 * \param ctx the SSL context.
2089 * \param cb the callback
2092 #ifndef OPENSSL_NO_RSA
2093 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2097 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2100 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2104 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2110 * \brief The RSA temporary key callback function.
2111 * \param ssl the SSL session.
2112 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2113 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2114 * of the required key in bits.
2115 * \return the temporary RSA key.
2116 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2119 RSA *cb(SSL *ssl,int is_export,int keylength)
2124 * \brief Set the callback for generating temporary DH keys.
2125 * \param ctx the SSL context.
2126 * \param dh the callback
2129 #ifndef OPENSSL_NO_DH
2130 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2133 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2136 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2139 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2143 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2144 #include "../crypto/bio/bss_file.c"
2147 IMPLEMENT_STACK_OF(SSL_CIPHER)
2148 IMPLEMENT_STACK_OF(SSL_COMP)