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>
72 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
74 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
75 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
76 static int ssl_meth_num=0;
77 static int ssl_ctx_meth_num=0;
79 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
80 /* evil casts, but these functions are only called if there's a library bug */
81 (int (*)(SSL *,int))ssl_undefined_function,
82 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
83 ssl_undefined_function,
84 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
85 (int (*)(SSL*, int))ssl_undefined_function,
86 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
93 if (s->method == NULL)
95 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
103 #if 0 /* Disabled since version 1.10 of this file (early return not
104 * needed because SSL_clear is not called when doing renegotiation) */
105 /* This is set if we are doing dynamic renegotiation so keep
106 * the old cipher. It is sort of a SSL_clear_lite :-) */
107 if (s->new_session) return(1);
111 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
116 state=s->state; /* Keep to check if we throw away the session-id */
119 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
121 s->version=s->method->version;
122 s->client_version=s->version;
123 s->rwstate=SSL_NOTHING;
124 s->rstate=SSL_ST_READ_HEADER;
126 s->read_ahead=s->ctx->read_ahead;
129 if (s->init_buf != NULL)
131 BUF_MEM_free(s->init_buf);
135 ssl_clear_cipher_ctx(s);
137 if (ssl_clear_bad_session(s))
139 SSL_SESSION_free(s->session);
146 /* Check to see if we were changed into a different method, if
147 * so, revert back if we are not doing session-id reuse. */
148 if ((s->session == NULL) && (s->method != s->ctx->method))
150 s->method->ssl_free(s);
151 s->method=s->ctx->method;
152 if (!s->method->ssl_new(s))
157 s->method->ssl_clear(s);
161 /** Used to change an SSL_CTXs default SSL method type */
162 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
164 STACK_OF(SSL_CIPHER) *sk;
168 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
169 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
170 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
172 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
178 SSL *SSL_new(SSL_CTX *ctx)
184 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
187 if (ctx->method == NULL)
189 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
193 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
194 if (s == NULL) goto err;
195 memset(s,0,sizeof(SSL));
197 #ifndef OPENSSL_NO_KRB5
198 s->kssl_ctx = kssl_ctx_new();
199 #endif /* OPENSSL_NO_KRB5 */
201 if (ctx->cert != NULL)
203 /* Earlier library versions used to copy the pointer to
204 * the CERT, not its contents; only when setting new
205 * parameters for the per-SSL copy, ssl_cert_new would be
206 * called (and the direct reference to the per-SSL_CTX
207 * settings would be lost, but those still were indirectly
208 * accessed for various purposes, and for that reason they
209 * used to be known as s->ctx->default_cert).
210 * Now we don't look at the SSL_CTX's CERT after having
211 * duplicated it once. */
213 s->cert = ssl_cert_dup(ctx->cert);
218 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
219 s->sid_ctx_length=ctx->sid_ctx_length;
220 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
221 s->verify_mode=ctx->verify_mode;
222 s->verify_depth=ctx->verify_depth;
223 s->verify_callback=ctx->default_verify_callback;
224 s->generate_session_id=ctx->generate_session_id;
225 s->purpose = ctx->purpose;
226 s->trust = ctx->trust;
227 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
230 s->verify_result=X509_V_OK;
232 s->method=ctx->method;
234 if (!s->method->ssl_new(s))
237 s->quiet_shutdown=ctx->quiet_shutdown;
239 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
240 s->options=ctx->options;
242 s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
245 CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
252 ssl_cert_free(s->cert);
254 SSL_CTX_free(s->ctx); /* decrement reference count */
257 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
261 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
262 unsigned int sid_ctx_len)
264 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
266 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
269 ctx->sid_ctx_length=sid_ctx_len;
270 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
275 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
276 unsigned int sid_ctx_len)
278 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
280 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
283 ssl->sid_ctx_length=sid_ctx_len;
284 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
289 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
291 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
292 ctx->generate_session_id = cb;
293 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
297 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
299 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
300 ssl->generate_session_id = cb;
301 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
305 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
308 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
309 * we can "construct" a session to give us the desired check - ie. to
310 * find if there's a session in the hash table that would conflict with
311 * any new session built out of this id/id_len and the ssl_version in
312 * use by this SSL. */
314 r.ssl_version = ssl->version;
315 r.session_id_length = id_len;
316 memcpy(r.session_id, id, id_len);
317 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
318 * callback is calling us to check the uniqueness of a shorter ID, it
319 * must be compared as a padded-out ID because that is what it will be
320 * converted to when the callback has finished choosing it. */
321 if((r.ssl_version == SSL2_VERSION) &&
322 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
324 memset(r.session_id + id_len, 0,
325 SSL2_SSL_SESSION_ID_LENGTH - id_len);
326 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
329 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
330 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
331 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
335 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
337 return X509_PURPOSE_set(&s->purpose, purpose);
340 int SSL_set_purpose(SSL *s, int purpose)
342 return X509_PURPOSE_set(&s->purpose, purpose);
345 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
347 return X509_TRUST_set(&s->trust, trust);
350 int SSL_set_trust(SSL *s, int trust)
352 return X509_TRUST_set(&s->trust, trust);
355 void SSL_free(SSL *s)
362 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
370 fprintf(stderr,"SSL_free, bad reference count\n");
375 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
379 /* If the buffering BIO is in place, pop it off */
380 if (s->bbio == s->wbio)
382 s->wbio=BIO_pop(s->wbio);
388 BIO_free_all(s->rbio);
389 if ((s->wbio != NULL) && (s->wbio != s->rbio))
390 BIO_free_all(s->wbio);
392 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
394 /* add extra stuff */
395 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
396 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
398 /* Make the next call work :-) */
399 if (s->session != NULL)
401 ssl_clear_bad_session(s);
402 SSL_SESSION_free(s->session);
405 ssl_clear_cipher_ctx(s);
407 if (s->cert != NULL) ssl_cert_free(s->cert);
408 /* Free up if allocated */
410 if (s->ctx) SSL_CTX_free(s->ctx);
412 if (s->client_CA != NULL)
413 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
415 if (s->method != NULL) s->method->ssl_free(s);
420 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
422 /* If the output buffering BIO is still in place, remove it
426 if (s->wbio == s->bbio)
428 s->wbio=s->wbio->next_bio;
429 s->bbio->next_bio=NULL;
432 if ((s->rbio != NULL) && (s->rbio != rbio))
433 BIO_free_all(s->rbio);
434 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
435 BIO_free_all(s->wbio);
440 BIO *SSL_get_rbio(SSL *s)
443 BIO *SSL_get_wbio(SSL *s)
446 int SSL_get_fd(SSL *s)
452 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
458 #ifndef OPENSSL_NO_SOCK
459 int SSL_set_fd(SSL *s,int fd)
464 bio=BIO_new(BIO_s_socket());
468 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
471 BIO_set_fd(bio,fd,BIO_NOCLOSE);
472 SSL_set_bio(s,bio,bio);
478 int SSL_set_wfd(SSL *s,int fd)
483 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
484 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
486 bio=BIO_new(BIO_s_socket());
489 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
490 BIO_set_fd(bio,fd,BIO_NOCLOSE);
491 SSL_set_bio(s,SSL_get_rbio(s),bio);
494 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
500 int SSL_set_rfd(SSL *s,int fd)
505 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
506 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
508 bio=BIO_new(BIO_s_socket());
512 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
515 BIO_set_fd(bio,fd,BIO_NOCLOSE);
516 SSL_set_bio(s,bio,SSL_get_wbio(s));
519 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
527 /* return length of latest Finished message we sent, copy to 'buf' */
528 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
534 ret = s->s3->tmp.finish_md_len;
537 memcpy(buf, s->s3->tmp.finish_md, count);
542 /* return length of latest Finished message we expected, copy to 'buf' */
543 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
549 ret = s->s3->tmp.peer_finish_md_len;
552 memcpy(buf, s->s3->tmp.peer_finish_md, count);
558 int SSL_get_verify_mode(SSL *s)
560 return(s->verify_mode);
563 int SSL_get_verify_depth(SSL *s)
565 return(s->verify_depth);
568 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
570 return(s->verify_callback);
573 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
575 return(ctx->verify_mode);
578 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
580 return(ctx->verify_depth);
583 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
585 return(ctx->default_verify_callback);
588 void SSL_set_verify(SSL *s,int mode,
589 int (*callback)(int ok,X509_STORE_CTX *ctx))
592 if (callback != NULL)
593 s->verify_callback=callback;
596 void SSL_set_verify_depth(SSL *s,int depth)
598 s->verify_depth=depth;
601 void SSL_set_read_ahead(SSL *s,int yes)
606 int SSL_get_read_ahead(SSL *s)
608 return(s->read_ahead);
611 int SSL_pending(SSL *s)
613 /* SSL_pending cannot work properly if read-ahead is enabled
614 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
615 * and it is impossible to fix since SSL_pending cannot report
616 * errors that may be observed while scanning the new data.
617 * (Note that SSL_pending() is often used as a boolean value,
618 * so we'd better not return -1.)
620 return(s->method->ssl_pending(s));
623 X509 *SSL_get_peer_certificate(SSL *s)
627 if ((s == NULL) || (s->session == NULL))
632 if (r == NULL) return(r);
634 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
639 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
643 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
646 r=s->session->sess_cert->cert_chain;
648 /* If we are a client, cert_chain includes the peer's own
649 * certificate; if we are a server, it does not. */
654 /* Now in theory, since the calling process own 't' it should be safe to
655 * modify. We need to be able to read f without being hassled */
656 void SSL_copy_session_id(SSL *t,SSL *f)
660 /* Do we need to to SSL locking? */
661 SSL_set_session(t,SSL_get_session(f));
663 /* what if we are setup as SSLv2 but want to talk SSLv3 or
665 if (t->method != f->method)
667 t->method->ssl_free(t); /* cleanup current */
668 t->method=f->method; /* change method */
669 t->method->ssl_new(t); /* setup new */
675 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
680 if (tmp != NULL) ssl_cert_free(tmp);
681 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
684 /* Fix this so it checks all the valid key/cert options */
685 int SSL_CTX_check_private_key(SSL_CTX *ctx)
687 if ( (ctx == NULL) ||
688 (ctx->cert == NULL) ||
689 (ctx->cert->key->x509 == NULL))
691 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
694 if (ctx->cert->key->privatekey == NULL)
696 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
699 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
702 /* Fix this function so that it takes an optional type parameter */
703 int SSL_check_private_key(SSL *ssl)
707 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
710 if (ssl->cert == NULL)
712 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
715 if (ssl->cert->key->x509 == NULL)
717 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
720 if (ssl->cert->key->privatekey == NULL)
722 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
725 return(X509_check_private_key(ssl->cert->key->x509,
726 ssl->cert->key->privatekey));
729 int SSL_accept(SSL *s)
731 if (s->handshake_func == 0)
732 /* Not properly initialized yet */
733 SSL_set_accept_state(s);
735 return(s->method->ssl_accept(s));
738 int SSL_connect(SSL *s)
740 if (s->handshake_func == 0)
741 /* Not properly initialized yet */
742 SSL_set_connect_state(s);
744 return(s->method->ssl_connect(s));
747 long SSL_get_default_timeout(SSL *s)
749 return(s->method->get_timeout());
752 int SSL_read(SSL *s,void *buf,int num)
754 if (s->handshake_func == 0)
756 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
760 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
762 s->rwstate=SSL_NOTHING;
765 return(s->method->ssl_read(s,buf,num));
768 int SSL_peek(SSL *s,void *buf,int num)
770 if (s->handshake_func == 0)
772 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
776 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
780 return(s->method->ssl_peek(s,buf,num));
783 int SSL_write(SSL *s,const void *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)
1062 #ifndef OPENSSL_NO_KRB5
1063 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1064 #endif /* OPENSSL_NO_KRB5 */
1066 if (sk == NULL) return(0);
1069 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1071 c=sk_SSL_CIPHER_value(sk,i);
1072 #ifndef OPENSSL_NO_KRB5
1073 if ((c->algorithms & SSL_KRB5) && nokrb5)
1075 #endif /* OPENSSL_NO_KRB5 */
1076 j=ssl_put_cipher_by_char(s,c,p);
1082 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1083 STACK_OF(SSL_CIPHER) **skp)
1086 STACK_OF(SSL_CIPHER) *sk;
1089 n=ssl_put_cipher_by_char(s,NULL,NULL);
1092 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1095 if ((skp == NULL) || (*skp == NULL))
1096 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1100 sk_SSL_CIPHER_zero(sk);
1103 for (i=0; i<num; i+=n)
1105 c=ssl_get_cipher_by_char(s,p);
1109 if (!sk_SSL_CIPHER_push(sk,c))
1111 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1121 if ((skp == NULL) || (*skp == NULL))
1122 sk_SSL_CIPHER_free(sk);
1126 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1131 ((unsigned int) a->session_id[0] )|
1132 ((unsigned int) a->session_id[1]<< 8L)|
1133 ((unsigned long)a->session_id[2]<<16L)|
1134 ((unsigned long)a->session_id[3]<<24L);
1138 /* NB: If this function (or indeed the hash function which uses a sort of
1139 * coarser function than this one) is changed, ensure
1140 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1141 * able to construct an SSL_SESSION that will collide with any existing session
1142 * with a matching session ID. */
1143 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1145 if (a->ssl_version != b->ssl_version)
1147 if (a->session_id_length != b->session_id_length)
1149 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1152 /* These wrapper functions should remain rather than redeclaring
1153 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1154 * variable. The reason is that the functions aren't static, they're exposed via
1156 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1157 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1159 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1165 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1169 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1171 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1174 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1178 memset(ret,0,sizeof(SSL_CTX));
1182 ret->cert_store=NULL;
1183 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1184 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1185 ret->session_cache_head=NULL;
1186 ret->session_cache_tail=NULL;
1188 /* We take the system default */
1189 ret->session_timeout=meth->get_timeout();
1191 ret->new_session_cb=NULL;
1192 ret->remove_session_cb=NULL;
1193 ret->get_session_cb=NULL;
1194 ret->generate_session_id=NULL;
1196 memset((char *)&ret->stats,0,sizeof(ret->stats));
1199 ret->quiet_shutdown=0;
1201 /* ret->cipher=NULL;*/
1202 /* ret->s2->challenge=NULL;
1203 ret->master_key=NULL;
1205 ret->s2->conn_id=NULL; */
1207 ret->info_callback=NULL;
1209 ret->app_verify_callback=NULL;
1210 ret->app_verify_arg=NULL;
1213 ret->verify_mode=SSL_VERIFY_NONE;
1214 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1215 ret->default_verify_callback=NULL;
1216 if ((ret->cert=ssl_cert_new()) == NULL)
1219 ret->default_passwd_callback=NULL;
1220 ret->default_passwd_callback_userdata=NULL;
1221 ret->client_cert_cb=NULL;
1223 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1224 LHASH_COMP_FN(SSL_SESSION_cmp));
1225 if (ret->sessions == NULL) goto err;
1226 ret->cert_store=X509_STORE_new();
1227 if (ret->cert_store == NULL) goto err;
1229 ssl_create_cipher_list(ret->method,
1230 &ret->cipher_list,&ret->cipher_list_by_id,
1231 SSL_DEFAULT_CIPHER_LIST);
1232 if (ret->cipher_list == NULL
1233 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1235 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1239 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1241 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1244 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1246 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1249 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1251 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1255 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1258 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1260 ret->extra_certs=NULL;
1261 ret->comp_methods=SSL_COMP_get_compression_methods();
1265 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1267 if (ret != NULL) SSL_CTX_free(ret);
1272 static void SSL_COMP_free(SSL_COMP *comp)
1273 { OPENSSL_free(comp); }
1276 void SSL_CTX_free(SSL_CTX *a)
1280 if (a == NULL) return;
1282 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1284 REF_PRINT("SSL_CTX",a);
1290 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1294 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1296 if (a->sessions != NULL)
1298 SSL_CTX_flush_sessions(a,0);
1299 lh_free(a->sessions);
1301 if (a->cert_store != NULL)
1302 X509_STORE_free(a->cert_store);
1303 if (a->cipher_list != NULL)
1304 sk_SSL_CIPHER_free(a->cipher_list);
1305 if (a->cipher_list_by_id != NULL)
1306 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1307 if (a->cert != NULL)
1308 ssl_cert_free(a->cert);
1309 if (a->client_CA != NULL)
1310 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1311 if (a->extra_certs != NULL)
1312 sk_X509_pop_free(a->extra_certs,X509_free);
1313 #if 0 /* This should never be done, since it removes a global database */
1314 if (a->comp_methods != NULL)
1315 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1317 a->comp_methods = NULL;
1322 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1324 ctx->default_passwd_callback=cb;
1327 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1329 ctx->default_passwd_callback_userdata=u;
1332 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1335 * int (*cb)(X509_STORE_CTX *),
1337 * int (*cb)(X509_STORE_CTX *, void *arg)
1339 ctx->app_verify_callback=cb;
1340 ctx->app_verify_arg=arg; /* never used */
1343 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1345 ctx->verify_mode=mode;
1346 ctx->default_verify_callback=cb;
1347 /* This needs cleaning up EAY EAY EAY */
1348 X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1351 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1353 ctx->verify_depth=depth;
1356 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1359 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1360 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1361 int rsa_tmp_export,dh_tmp_export,kl;
1362 unsigned long mask,emask;
1364 if (c == NULL) return;
1366 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1368 #ifndef OPENSSL_NO_RSA
1369 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1370 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1371 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1373 rsa_tmp=rsa_tmp_export=0;
1375 #ifndef OPENSSL_NO_DH
1376 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1377 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1378 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1380 dh_tmp=dh_tmp_export=0;
1383 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1384 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1385 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1386 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1387 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1388 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1389 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1390 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1391 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1392 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1393 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1394 /* FIX THIS EAY EAY EAY */
1395 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1396 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1402 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1403 rsa_tmp,rsa_tmp_export,dh_tmp,
1404 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1407 if (rsa_enc || (rsa_tmp && rsa_sign))
1409 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1413 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1414 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1415 (rsa_enc || rsa_sign || dsa_sign))
1417 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1418 (rsa_enc || rsa_sign || dsa_sign))
1428 if (dh_rsa) mask|=SSL_kDHr;
1429 if (dh_rsa_export) emask|=SSL_kDHr;
1431 if (dh_dsa) mask|=SSL_kDHd;
1432 if (dh_dsa_export) emask|=SSL_kDHd;
1434 if (rsa_enc || rsa_sign)
1449 #ifndef OPENSSL_NO_KRB5
1450 mask|=SSL_kKRB5|SSL_aKRB5;
1451 emask|=SSL_kKRB5|SSL_aKRB5;
1455 c->export_mask=emask;
1459 /* THIS NEEDS CLEANING UP */
1460 X509 *ssl_get_server_send_cert(SSL *s)
1462 unsigned long alg,mask,kalg;
1467 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1468 alg=s->s3->tmp.new_cipher->algorithms;
1469 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1470 mask=is_export?c->export_mask:c->mask;
1471 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1473 if (kalg & SSL_kDHr)
1475 else if (kalg & SSL_kDHd)
1477 else if (kalg & SSL_aDSS)
1478 i=SSL_PKEY_DSA_SIGN;
1479 else if (kalg & SSL_aRSA)
1481 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1482 i=SSL_PKEY_RSA_SIGN;
1486 else if (kalg & SSL_aKRB5)
1488 /* VRS something else here? */
1491 else /* if (kalg & SSL_aNULL) */
1493 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1496 if (c->pkeys[i].x509 == NULL) return(NULL);
1497 return(c->pkeys[i].x509);
1500 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1505 alg=cipher->algorithms;
1508 if ((alg & SSL_aDSS) &&
1509 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1510 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1511 else if (alg & SSL_aRSA)
1513 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1514 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1515 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1516 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1520 else /* if (alg & SSL_aNULL) */
1522 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1527 void ssl_update_cache(SSL *s,int mode)
1531 /* If the session_id_length is 0, we are not supposed to cache it,
1532 * and it would be rather hard to do anyway :-) */
1533 if (s->session->session_id_length == 0) return;
1535 if ((s->ctx->session_cache_mode & mode)
1537 && SSL_CTX_add_session(s->ctx,s->session)
1538 && (s->ctx->new_session_cb != NULL))
1540 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1541 if (!s->ctx->new_session_cb(s,s->session))
1542 SSL_SESSION_free(s->session);
1545 /* auto flush every 255 connections */
1546 i=s->ctx->session_cache_mode;
1547 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1548 ((i & mode) == mode))
1550 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1551 ?s->ctx->stats.sess_connect_good
1552 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1554 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1559 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1564 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1569 if (s->method != meth)
1571 if (s->handshake_func != NULL)
1572 conn=(s->handshake_func == s->method->ssl_connect);
1574 if (s->method->version == meth->version)
1578 s->method->ssl_free(s);
1580 ret=s->method->ssl_new(s);
1584 s->handshake_func=meth->ssl_connect;
1586 s->handshake_func=meth->ssl_accept;
1591 int SSL_get_error(SSL *s,int i)
1597 if (i > 0) return(SSL_ERROR_NONE);
1599 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1600 * etc, where we do encode the error */
1601 if ((l=ERR_peek_error()) != 0)
1603 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1604 return(SSL_ERROR_SYSCALL);
1606 return(SSL_ERROR_SSL);
1609 if ((i < 0) && SSL_want_read(s))
1611 bio=SSL_get_rbio(s);
1612 if (BIO_should_read(bio))
1613 return(SSL_ERROR_WANT_READ);
1614 else if (BIO_should_write(bio))
1615 /* This one doesn't make too much sense ... We never try
1616 * to write to the rbio, and an application program where
1617 * rbio and wbio are separate couldn't even know what it
1619 * However if we ever set s->rwstate incorrectly
1620 * (so that we have SSL_want_read(s) instead of
1621 * SSL_want_write(s)) and rbio and wbio *are* the same,
1622 * this test works around that bug; so it might be safer
1624 return(SSL_ERROR_WANT_WRITE);
1625 else if (BIO_should_io_special(bio))
1627 reason=BIO_get_retry_reason(bio);
1628 if (reason == BIO_RR_CONNECT)
1629 return(SSL_ERROR_WANT_CONNECT);
1630 else if (reason == BIO_RR_ACCEPT)
1631 return(SSL_ERROR_WANT_ACCEPT);
1633 return(SSL_ERROR_SYSCALL); /* unknown */
1637 if ((i < 0) && SSL_want_write(s))
1639 bio=SSL_get_wbio(s);
1640 if (BIO_should_write(bio))
1641 return(SSL_ERROR_WANT_WRITE);
1642 else if (BIO_should_read(bio))
1643 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1644 return(SSL_ERROR_WANT_READ);
1645 else if (BIO_should_io_special(bio))
1647 reason=BIO_get_retry_reason(bio);
1648 if (reason == BIO_RR_CONNECT)
1649 return(SSL_ERROR_WANT_CONNECT);
1650 else if (reason == BIO_RR_ACCEPT)
1651 return(SSL_ERROR_WANT_ACCEPT);
1653 return(SSL_ERROR_SYSCALL);
1656 if ((i < 0) && SSL_want_x509_lookup(s))
1658 return(SSL_ERROR_WANT_X509_LOOKUP);
1663 if (s->version == SSL2_VERSION)
1665 /* assume it is the socket being closed */
1666 return(SSL_ERROR_ZERO_RETURN);
1670 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1671 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1672 return(SSL_ERROR_ZERO_RETURN);
1675 return(SSL_ERROR_SYSCALL);
1678 int SSL_do_handshake(SSL *s)
1682 if (s->handshake_func == NULL)
1684 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1688 s->method->ssl_renegotiate_check(s);
1690 if (SSL_in_init(s) || SSL_in_before(s))
1692 ret=s->handshake_func(s);
1697 /* For the next 2 functions, SSL_clear() sets shutdown and so
1698 * one of these calls will reset it */
1699 void SSL_set_accept_state(SSL *s)
1703 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1704 s->handshake_func=s->method->ssl_accept;
1705 /* clear the current cipher */
1706 ssl_clear_cipher_ctx(s);
1709 void SSL_set_connect_state(SSL *s)
1713 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1714 s->handshake_func=s->method->ssl_connect;
1715 /* clear the current cipher */
1716 ssl_clear_cipher_ctx(s);
1719 int ssl_undefined_function(SSL *s)
1721 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1725 SSL_METHOD *ssl_bad_method(int ver)
1727 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1731 const char *SSL_get_version(SSL *s)
1733 if (s->version == TLS1_VERSION)
1735 else if (s->version == SSL3_VERSION)
1737 else if (s->version == SSL2_VERSION)
1743 SSL *SSL_dup(SSL *s)
1745 STACK_OF(X509_NAME) *sk;
1750 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1753 if (s->session != NULL)
1755 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1756 SSL_copy_session_id(ret,s);
1760 /* No session has been established yet, so we have to expect
1761 * that s->cert or ret->cert will be changed later --
1762 * they should not both point to the same object,
1763 * and thus we can't use SSL_copy_session_id. */
1765 ret->method = s->method;
1766 ret->method->ssl_new(ret);
1768 if (s->cert != NULL)
1770 if (ret->cert != NULL)
1772 ssl_cert_free(ret->cert);
1774 ret->cert = ssl_cert_dup(s->cert);
1775 if (ret->cert == NULL)
1779 SSL_set_session_id_context(ret,
1780 s->sid_ctx, s->sid_ctx_length);
1783 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1784 SSL_set_verify(ret,SSL_get_verify_mode(s),
1785 SSL_get_verify_callback(s));
1786 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1788 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1790 ret->debug=s->debug;
1791 ret->options=s->options;
1793 /* copy app data, a little dangerous perhaps */
1794 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1797 /* setup rbio, and wbio */
1798 if (s->rbio != NULL)
1800 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1803 if (s->wbio != NULL)
1805 if (s->wbio != s->rbio)
1807 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1811 ret->wbio=ret->rbio;
1814 /* dup the cipher_list and cipher_list_by_id stacks */
1815 if (s->cipher_list != NULL)
1817 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1820 if (s->cipher_list_by_id != NULL)
1821 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1825 /* Dup the client_CA list */
1826 if (s->client_CA != NULL)
1828 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1830 for (i=0; i<sk_X509_NAME_num(sk); i++)
1832 xn=sk_X509_NAME_value(sk,i);
1833 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1841 ret->shutdown=s->shutdown;
1842 ret->state=s->state;
1843 ret->handshake_func=s->handshake_func;
1844 ret->server=s->server;
1849 if (ret != NULL) SSL_free(ret);
1855 void ssl_clear_cipher_ctx(SSL *s)
1857 if (s->enc_read_ctx != NULL)
1859 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1860 OPENSSL_free(s->enc_read_ctx);
1861 s->enc_read_ctx=NULL;
1863 if (s->enc_write_ctx != NULL)
1865 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1866 OPENSSL_free(s->enc_write_ctx);
1867 s->enc_write_ctx=NULL;
1869 if (s->expand != NULL)
1871 COMP_CTX_free(s->expand);
1874 if (s->compress != NULL)
1876 COMP_CTX_free(s->compress);
1881 /* Fix this function so that it takes an optional type parameter */
1882 X509 *SSL_get_certificate(SSL *s)
1884 if (s->cert != NULL)
1885 return(s->cert->key->x509);
1890 /* Fix this function so that it takes an optional type parameter */
1891 EVP_PKEY *SSL_get_privatekey(SSL *s)
1893 if (s->cert != NULL)
1894 return(s->cert->key->privatekey);
1899 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1901 if ((s->session != NULL) && (s->session->cipher != NULL))
1902 return(s->session->cipher);
1906 int ssl_init_wbio_buffer(SSL *s,int push)
1910 if (s->bbio == NULL)
1912 bbio=BIO_new(BIO_f_buffer());
1913 if (bbio == NULL) return(0);
1919 if (s->bbio == s->wbio)
1920 s->wbio=BIO_pop(s->wbio);
1922 (void)BIO_reset(bbio);
1923 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1924 if (!BIO_set_read_buffer_size(bbio,1))
1926 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1931 if (s->wbio != bbio)
1932 s->wbio=BIO_push(bbio,s->wbio);
1936 if (s->wbio == bbio)
1937 s->wbio=BIO_pop(bbio);
1942 void ssl_free_wbio_buffer(SSL *s)
1944 if (s->bbio == NULL) return;
1946 if (s->bbio == s->wbio)
1948 /* remove buffering */
1949 s->wbio=BIO_pop(s->wbio);
1950 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1951 assert(s->wbio != NULL);
1958 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1960 ctx->quiet_shutdown=mode;
1963 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1965 return(ctx->quiet_shutdown);
1968 void SSL_set_quiet_shutdown(SSL *s,int mode)
1970 s->quiet_shutdown=mode;
1973 int SSL_get_quiet_shutdown(SSL *s)
1975 return(s->quiet_shutdown);
1978 void SSL_set_shutdown(SSL *s,int mode)
1983 int SSL_get_shutdown(SSL *s)
1985 return(s->shutdown);
1988 int SSL_version(SSL *s)
1993 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1998 #ifndef OPENSSL_NO_STDIO
1999 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2001 return(X509_STORE_set_default_paths(ctx->cert_store));
2004 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2007 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2011 void SSL_set_info_callback(SSL *ssl,void (*cb)())
2013 ssl->info_callback=cb;
2016 void (*SSL_get_info_callback(SSL *ssl))(void)
2018 return((void (*)())ssl->info_callback);
2021 int SSL_state(SSL *ssl)
2026 void SSL_set_verify_result(SSL *ssl,long arg)
2028 ssl->verify_result=arg;
2031 long SSL_get_verify_result(SSL *ssl)
2033 return(ssl->verify_result);
2036 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2037 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2040 return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
2041 &ssl_meth,argl,argp,new_func,dup_func,free_func));
2044 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2046 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2049 void *SSL_get_ex_data(SSL *s,int idx)
2051 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2054 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2055 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2058 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
2059 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
2062 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2064 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2067 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2069 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2077 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2079 return(ctx->cert_store);
2082 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2084 if (ctx->cert_store != NULL)
2085 X509_STORE_free(ctx->cert_store);
2086 ctx->cert_store=store;
2089 int SSL_want(SSL *s)
2095 * \brief Set the callback for generating temporary RSA keys.
2096 * \param ctx the SSL context.
2097 * \param cb the callback
2100 #ifndef OPENSSL_NO_RSA
2101 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2105 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2108 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2112 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2118 * \brief The RSA temporary key callback function.
2119 * \param ssl the SSL session.
2120 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2121 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2122 * of the required key in bits.
2123 * \return the temporary RSA key.
2124 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2127 RSA *cb(SSL *ssl,int is_export,int keylength)
2132 * \brief Set the callback for generating temporary DH keys.
2133 * \param ctx the SSL context.
2134 * \param dh the callback
2137 #ifndef OPENSSL_NO_DH
2138 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2141 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2144 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2147 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2151 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2152 #include "../crypto/bio/bss_file.c"
2155 IMPLEMENT_STACK_OF(SSL_CIPHER)
2156 IMPLEMENT_STACK_OF(SSL_COMP)