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 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
75 /* evil casts, but these functions are only called if there's a library bug */
76 (int (*)(SSL *,int))ssl_undefined_function,
77 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
78 ssl_undefined_function,
79 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
80 (int (*)(SSL*, int))ssl_undefined_function,
81 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
88 if (s->method == NULL)
90 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
98 #if 0 /* Disabled since version 1.10 of this file (early return not
99 * needed because SSL_clear is not called when doing renegotiation) */
100 /* This is set if we are doing dynamic renegotiation so keep
101 * the old cipher. It is sort of a SSL_clear_lite :-) */
102 if (s->new_session) return(1);
106 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
111 state=s->state; /* Keep to check if we throw away the session-id */
114 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
116 s->version=s->method->version;
117 s->client_version=s->version;
118 s->rwstate=SSL_NOTHING;
119 s->rstate=SSL_ST_READ_HEADER;
121 s->read_ahead=s->ctx->read_ahead;
124 if (s->init_buf != NULL)
126 BUF_MEM_free(s->init_buf);
130 ssl_clear_cipher_ctx(s);
132 if (ssl_clear_bad_session(s))
134 SSL_SESSION_free(s->session);
141 /* Check to see if we were changed into a different method, if
142 * so, revert back if we are not doing session-id reuse. */
143 if ((s->session == NULL) && (s->method != s->ctx->method))
145 s->method->ssl_free(s);
146 s->method=s->ctx->method;
147 if (!s->method->ssl_new(s))
152 s->method->ssl_clear(s);
156 /** Used to change an SSL_CTXs default SSL method type */
157 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
159 STACK_OF(SSL_CIPHER) *sk;
163 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
164 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
165 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
167 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
173 SSL *SSL_new(SSL_CTX *ctx)
179 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
182 if (ctx->method == NULL)
184 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
188 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
189 if (s == NULL) goto err;
190 memset(s,0,sizeof(SSL));
192 #ifndef OPENSSL_NO_KRB5
193 s->kssl_ctx = kssl_ctx_new();
194 #endif /* OPENSSL_NO_KRB5 */
196 if (ctx->cert != NULL)
198 /* Earlier library versions used to copy the pointer to
199 * the CERT, not its contents; only when setting new
200 * parameters for the per-SSL copy, ssl_cert_new would be
201 * called (and the direct reference to the per-SSL_CTX
202 * settings would be lost, but those still were indirectly
203 * accessed for various purposes, and for that reason they
204 * used to be known as s->ctx->default_cert).
205 * Now we don't look at the SSL_CTX's CERT after having
206 * duplicated it once. */
208 s->cert = ssl_cert_dup(ctx->cert);
213 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
214 s->sid_ctx_length=ctx->sid_ctx_length;
215 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
216 s->verify_mode=ctx->verify_mode;
217 s->verify_depth=ctx->verify_depth;
218 s->verify_callback=ctx->default_verify_callback;
219 s->generate_session_id=ctx->generate_session_id;
220 s->purpose = ctx->purpose;
221 s->trust = ctx->trust;
222 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
225 s->verify_result=X509_V_OK;
227 s->method=ctx->method;
229 if (!s->method->ssl_new(s))
232 s->quiet_shutdown=ctx->quiet_shutdown;
234 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
235 s->options=ctx->options;
237 s->max_cert_list=ctx->max_cert_list;
238 s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
241 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
248 ssl_cert_free(s->cert);
250 SSL_CTX_free(s->ctx); /* decrement reference count */
253 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
257 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
258 unsigned int sid_ctx_len)
260 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
262 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
265 ctx->sid_ctx_length=sid_ctx_len;
266 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
271 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
272 unsigned int sid_ctx_len)
274 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
276 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
279 ssl->sid_ctx_length=sid_ctx_len;
280 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
285 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
287 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
288 ctx->generate_session_id = cb;
289 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
293 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
295 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
296 ssl->generate_session_id = cb;
297 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
301 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
304 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
305 * we can "construct" a session to give us the desired check - ie. to
306 * find if there's a session in the hash table that would conflict with
307 * any new session built out of this id/id_len and the ssl_version in
308 * use by this SSL. */
310 r.ssl_version = ssl->version;
311 r.session_id_length = id_len;
312 memcpy(r.session_id, id, id_len);
313 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
314 * callback is calling us to check the uniqueness of a shorter ID, it
315 * must be compared as a padded-out ID because that is what it will be
316 * converted to when the callback has finished choosing it. */
317 if((r.ssl_version == SSL2_VERSION) &&
318 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
320 memset(r.session_id + id_len, 0,
321 SSL2_SSL_SESSION_ID_LENGTH - id_len);
322 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
325 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
326 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
327 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
331 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
333 return X509_PURPOSE_set(&s->purpose, purpose);
336 int SSL_set_purpose(SSL *s, int purpose)
338 return X509_PURPOSE_set(&s->purpose, purpose);
341 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
343 return X509_TRUST_set(&s->trust, trust);
346 int SSL_set_trust(SSL *s, int trust)
348 return X509_TRUST_set(&s->trust, trust);
351 void SSL_free(SSL *s)
358 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
366 fprintf(stderr,"SSL_free, bad reference count\n");
371 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
375 /* If the buffering BIO is in place, pop it off */
376 if (s->bbio == s->wbio)
378 s->wbio=BIO_pop(s->wbio);
384 BIO_free_all(s->rbio);
385 if ((s->wbio != NULL) && (s->wbio != s->rbio))
386 BIO_free_all(s->wbio);
388 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
390 /* add extra stuff */
391 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
392 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
394 /* Make the next call work :-) */
395 if (s->session != NULL)
397 ssl_clear_bad_session(s);
398 SSL_SESSION_free(s->session);
401 ssl_clear_cipher_ctx(s);
403 if (s->cert != NULL) ssl_cert_free(s->cert);
404 /* Free up if allocated */
406 if (s->ctx) SSL_CTX_free(s->ctx);
408 if (s->client_CA != NULL)
409 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
411 if (s->method != NULL) s->method->ssl_free(s);
416 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
418 /* If the output buffering BIO is still in place, remove it
422 if (s->wbio == s->bbio)
424 s->wbio=s->wbio->next_bio;
425 s->bbio->next_bio=NULL;
428 if ((s->rbio != NULL) && (s->rbio != rbio))
429 BIO_free_all(s->rbio);
430 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
431 BIO_free_all(s->wbio);
436 BIO *SSL_get_rbio(SSL *s)
439 BIO *SSL_get_wbio(SSL *s)
442 int SSL_get_fd(SSL *s)
444 return(SSL_get_rfd(s));
447 int SSL_get_rfd(SSL *s)
453 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
459 int SSL_get_wfd(SSL *s)
465 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
471 #ifndef OPENSSL_NO_SOCK
472 int SSL_set_fd(SSL *s,int fd)
477 bio=BIO_new(BIO_s_socket());
481 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
484 BIO_set_fd(bio,fd,BIO_NOCLOSE);
485 SSL_set_bio(s,bio,bio);
491 int SSL_set_wfd(SSL *s,int fd)
496 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
497 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
499 bio=BIO_new(BIO_s_socket());
502 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
503 BIO_set_fd(bio,fd,BIO_NOCLOSE);
504 SSL_set_bio(s,SSL_get_rbio(s),bio);
507 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
513 int SSL_set_rfd(SSL *s,int fd)
518 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
519 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
521 bio=BIO_new(BIO_s_socket());
525 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
528 BIO_set_fd(bio,fd,BIO_NOCLOSE);
529 SSL_set_bio(s,bio,SSL_get_wbio(s));
532 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
540 /* return length of latest Finished message we sent, copy to 'buf' */
541 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
547 ret = s->s3->tmp.finish_md_len;
550 memcpy(buf, s->s3->tmp.finish_md, count);
555 /* return length of latest Finished message we expected, copy to 'buf' */
556 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
562 ret = s->s3->tmp.peer_finish_md_len;
565 memcpy(buf, s->s3->tmp.peer_finish_md, count);
571 int SSL_get_verify_mode(SSL *s)
573 return(s->verify_mode);
576 int SSL_get_verify_depth(SSL *s)
578 return(s->verify_depth);
581 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
583 return(s->verify_callback);
586 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
588 return(ctx->verify_mode);
591 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
593 return(ctx->verify_depth);
596 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
598 return(ctx->default_verify_callback);
601 void SSL_set_verify(SSL *s,int mode,
602 int (*callback)(int ok,X509_STORE_CTX *ctx))
605 if (callback != NULL)
606 s->verify_callback=callback;
609 void SSL_set_verify_depth(SSL *s,int depth)
611 s->verify_depth=depth;
614 void SSL_set_read_ahead(SSL *s,int yes)
619 int SSL_get_read_ahead(SSL *s)
621 return(s->read_ahead);
624 int SSL_pending(SSL *s)
626 /* SSL_pending cannot work properly if read-ahead is enabled
627 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
628 * and it is impossible to fix since SSL_pending cannot report
629 * errors that may be observed while scanning the new data.
630 * (Note that SSL_pending() is often used as a boolean value,
631 * so we'd better not return -1.)
633 return(s->method->ssl_pending(s));
636 X509 *SSL_get_peer_certificate(SSL *s)
640 if ((s == NULL) || (s->session == NULL))
645 if (r == NULL) return(r);
647 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
652 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
656 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
659 r=s->session->sess_cert->cert_chain;
661 /* If we are a client, cert_chain includes the peer's own
662 * certificate; if we are a server, it does not. */
667 /* Now in theory, since the calling process own 't' it should be safe to
668 * modify. We need to be able to read f without being hassled */
669 void SSL_copy_session_id(SSL *t,SSL *f)
673 /* Do we need to to SSL locking? */
674 SSL_set_session(t,SSL_get_session(f));
676 /* what if we are setup as SSLv2 but want to talk SSLv3 or
678 if (t->method != f->method)
680 t->method->ssl_free(t); /* cleanup current */
681 t->method=f->method; /* change method */
682 t->method->ssl_new(t); /* setup new */
688 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
693 if (tmp != NULL) ssl_cert_free(tmp);
694 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
697 /* Fix this so it checks all the valid key/cert options */
698 int SSL_CTX_check_private_key(SSL_CTX *ctx)
700 if ( (ctx == NULL) ||
701 (ctx->cert == NULL) ||
702 (ctx->cert->key->x509 == NULL))
704 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
707 if (ctx->cert->key->privatekey == NULL)
709 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
712 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
715 /* Fix this function so that it takes an optional type parameter */
716 int SSL_check_private_key(SSL *ssl)
720 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
723 if (ssl->cert == NULL)
725 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
728 if (ssl->cert->key->x509 == NULL)
730 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
733 if (ssl->cert->key->privatekey == NULL)
735 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
738 return(X509_check_private_key(ssl->cert->key->x509,
739 ssl->cert->key->privatekey));
742 int SSL_accept(SSL *s)
744 if (s->handshake_func == 0)
745 /* Not properly initialized yet */
746 SSL_set_accept_state(s);
748 return(s->method->ssl_accept(s));
751 int SSL_connect(SSL *s)
753 if (s->handshake_func == 0)
754 /* Not properly initialized yet */
755 SSL_set_connect_state(s);
757 return(s->method->ssl_connect(s));
760 long SSL_get_default_timeout(SSL *s)
762 return(s->method->get_timeout());
765 int SSL_read(SSL *s,void *buf,int num)
767 if (s->handshake_func == 0)
769 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
773 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
775 s->rwstate=SSL_NOTHING;
778 return(s->method->ssl_read(s,buf,num));
781 int SSL_peek(SSL *s,void *buf,int num)
783 if (s->handshake_func == 0)
785 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
789 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
793 return(s->method->ssl_peek(s,buf,num));
796 int SSL_write(SSL *s,const void *buf,int num)
798 if (s->handshake_func == 0)
800 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
804 if (s->shutdown & SSL_SENT_SHUTDOWN)
806 s->rwstate=SSL_NOTHING;
807 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
810 return(s->method->ssl_write(s,buf,num));
813 int SSL_shutdown(SSL *s)
815 /* Note that this function behaves differently from what one might
816 * expect. Return values are 0 for no success (yet),
817 * 1 for success; but calling it once is usually not enough,
818 * even if blocking I/O is used (see ssl3_shutdown).
821 if (s->handshake_func == 0)
823 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
827 if ((s != NULL) && !SSL_in_init(s))
828 return(s->method->ssl_shutdown(s));
833 int SSL_renegotiate(SSL *s)
836 return(s->method->ssl_renegotiate(s));
839 int SSL_renegotiate_pending(SSL *s)
841 /* becomes true when negotiation is requested;
842 * false again once a handshake has finished */
843 return (s->new_session != 0);
846 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
852 case SSL_CTRL_GET_READ_AHEAD:
853 return(s->read_ahead);
854 case SSL_CTRL_SET_READ_AHEAD:
858 case SSL_CTRL_OPTIONS:
859 return(s->options|=larg);
861 return(s->mode|=larg);
862 case SSL_CTRL_GET_MAX_CERT_LIST:
863 return(s->max_cert_list);
864 case SSL_CTRL_SET_MAX_CERT_LIST:
866 s->max_cert_list=larg;
869 return(s->method->ssl_ctrl(s,cmd,larg,parg));
873 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
878 return(s->method->ssl_callback_ctrl(s,cmd,fp));
882 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
884 return ctx->sessions;
887 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
893 case SSL_CTRL_GET_READ_AHEAD:
894 return(ctx->read_ahead);
895 case SSL_CTRL_SET_READ_AHEAD:
897 ctx->read_ahead=larg;
899 case SSL_CTRL_GET_MAX_CERT_LIST:
900 return(ctx->max_cert_list);
901 case SSL_CTRL_SET_MAX_CERT_LIST:
902 l=ctx->max_cert_list;
903 ctx->max_cert_list=larg;
906 case SSL_CTRL_SET_SESS_CACHE_SIZE:
907 l=ctx->session_cache_size;
908 ctx->session_cache_size=larg;
910 case SSL_CTRL_GET_SESS_CACHE_SIZE:
911 return(ctx->session_cache_size);
912 case SSL_CTRL_SET_SESS_CACHE_MODE:
913 l=ctx->session_cache_mode;
914 ctx->session_cache_mode=larg;
916 case SSL_CTRL_GET_SESS_CACHE_MODE:
917 return(ctx->session_cache_mode);
919 case SSL_CTRL_SESS_NUMBER:
920 return(ctx->sessions->num_items);
921 case SSL_CTRL_SESS_CONNECT:
922 return(ctx->stats.sess_connect);
923 case SSL_CTRL_SESS_CONNECT_GOOD:
924 return(ctx->stats.sess_connect_good);
925 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
926 return(ctx->stats.sess_connect_renegotiate);
927 case SSL_CTRL_SESS_ACCEPT:
928 return(ctx->stats.sess_accept);
929 case SSL_CTRL_SESS_ACCEPT_GOOD:
930 return(ctx->stats.sess_accept_good);
931 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
932 return(ctx->stats.sess_accept_renegotiate);
933 case SSL_CTRL_SESS_HIT:
934 return(ctx->stats.sess_hit);
935 case SSL_CTRL_SESS_CB_HIT:
936 return(ctx->stats.sess_cb_hit);
937 case SSL_CTRL_SESS_MISSES:
938 return(ctx->stats.sess_miss);
939 case SSL_CTRL_SESS_TIMEOUTS:
940 return(ctx->stats.sess_timeout);
941 case SSL_CTRL_SESS_CACHE_FULL:
942 return(ctx->stats.sess_cache_full);
943 case SSL_CTRL_OPTIONS:
944 return(ctx->options|=larg);
946 return(ctx->mode|=larg);
948 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
952 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
957 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
961 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
969 return((l > 0)?1:-1);
972 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
973 const SSL_CIPHER * const *bp)
977 l=(*ap)->id-(*bp)->id;
981 return((l > 0)?1:-1);
984 /** return a STACK of the ciphers available for the SSL and in order of
986 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
988 if ((s != NULL) && (s->cipher_list != NULL))
990 return(s->cipher_list);
992 else if ((s->ctx != NULL) &&
993 (s->ctx->cipher_list != NULL))
995 return(s->ctx->cipher_list);
1000 /** return a STACK of the ciphers available for the SSL and in order of
1002 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1004 if ((s != NULL) && (s->cipher_list_by_id != NULL))
1006 return(s->cipher_list_by_id);
1008 else if ((s != NULL) && (s->ctx != NULL) &&
1009 (s->ctx->cipher_list_by_id != NULL))
1011 return(s->ctx->cipher_list_by_id);
1016 /** The old interface to get the same thing as SSL_get_ciphers() */
1017 const char *SSL_get_cipher_list(SSL *s,int n)
1020 STACK_OF(SSL_CIPHER) *sk;
1022 if (s == NULL) return(NULL);
1023 sk=SSL_get_ciphers(s);
1024 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1026 c=sk_SSL_CIPHER_value(sk,n);
1027 if (c == NULL) return(NULL);
1031 /** specify the ciphers to be used by default by the SSL_CTX */
1032 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1034 STACK_OF(SSL_CIPHER) *sk;
1036 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1037 &ctx->cipher_list_by_id,str);
1039 return((sk == NULL)?0:1);
1042 /** specify the ciphers to be used by the SSL */
1043 int SSL_set_cipher_list(SSL *s,const char *str)
1045 STACK_OF(SSL_CIPHER) *sk;
1047 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1048 &s->cipher_list_by_id,str);
1050 return((sk == NULL)?0:1);
1053 /* works well for SSLv2, not so good for SSLv3 */
1054 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1058 STACK_OF(SSL_CIPHER) *sk;
1062 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1067 sk=s->session->ciphers;
1068 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1070 /* Decrement for either the ':' or a '\0' */
1072 c=sk_SSL_CIPHER_value(sk,i);
1073 for (cp=c->name; *cp; )
1089 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1094 #ifndef OPENSSL_NO_KRB5
1095 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1096 #endif /* OPENSSL_NO_KRB5 */
1098 if (sk == NULL) return(0);
1101 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1103 c=sk_SSL_CIPHER_value(sk,i);
1104 #ifndef OPENSSL_NO_KRB5
1105 if ((c->algorithms & SSL_KRB5) && nokrb5)
1107 #endif /* OPENSSL_NO_KRB5 */
1108 j=ssl_put_cipher_by_char(s,c,p);
1114 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1115 STACK_OF(SSL_CIPHER) **skp)
1118 STACK_OF(SSL_CIPHER) *sk;
1121 n=ssl_put_cipher_by_char(s,NULL,NULL);
1124 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1127 if ((skp == NULL) || (*skp == NULL))
1128 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1132 sk_SSL_CIPHER_zero(sk);
1135 for (i=0; i<num; i+=n)
1137 c=ssl_get_cipher_by_char(s,p);
1141 if (!sk_SSL_CIPHER_push(sk,c))
1143 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1153 if ((skp == NULL) || (*skp == NULL))
1154 sk_SSL_CIPHER_free(sk);
1158 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1163 ((unsigned int) a->session_id[0] )|
1164 ((unsigned int) a->session_id[1]<< 8L)|
1165 ((unsigned long)a->session_id[2]<<16L)|
1166 ((unsigned long)a->session_id[3]<<24L);
1170 /* NB: If this function (or indeed the hash function which uses a sort of
1171 * coarser function than this one) is changed, ensure
1172 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1173 * able to construct an SSL_SESSION that will collide with any existing session
1174 * with a matching session ID. */
1175 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1177 if (a->ssl_version != b->ssl_version)
1179 if (a->session_id_length != b->session_id_length)
1181 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1184 /* These wrapper functions should remain rather than redeclaring
1185 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1186 * variable. The reason is that the functions aren't static, they're exposed via
1188 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1189 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1191 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1197 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1201 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1203 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1206 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1210 memset(ret,0,sizeof(SSL_CTX));
1214 ret->cert_store=NULL;
1215 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1216 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1217 ret->session_cache_head=NULL;
1218 ret->session_cache_tail=NULL;
1220 /* We take the system default */
1221 ret->session_timeout=meth->get_timeout();
1223 ret->new_session_cb=NULL;
1224 ret->remove_session_cb=NULL;
1225 ret->get_session_cb=NULL;
1226 ret->generate_session_id=NULL;
1228 memset((char *)&ret->stats,0,sizeof(ret->stats));
1231 ret->quiet_shutdown=0;
1233 /* ret->cipher=NULL;*/
1234 /* ret->s2->challenge=NULL;
1235 ret->master_key=NULL;
1237 ret->s2->conn_id=NULL; */
1239 ret->info_callback=NULL;
1241 ret->app_verify_callback=NULL;
1242 ret->app_verify_arg=NULL;
1244 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1246 ret->verify_mode=SSL_VERIFY_NONE;
1247 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1248 ret->default_verify_callback=NULL;
1249 if ((ret->cert=ssl_cert_new()) == NULL)
1252 ret->default_passwd_callback=NULL;
1253 ret->default_passwd_callback_userdata=NULL;
1254 ret->client_cert_cb=NULL;
1256 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1257 LHASH_COMP_FN(SSL_SESSION_cmp));
1258 if (ret->sessions == NULL) goto err;
1259 ret->cert_store=X509_STORE_new();
1260 if (ret->cert_store == NULL) goto err;
1262 ssl_create_cipher_list(ret->method,
1263 &ret->cipher_list,&ret->cipher_list_by_id,
1264 SSL_DEFAULT_CIPHER_LIST);
1265 if (ret->cipher_list == NULL
1266 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1268 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1272 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1274 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1277 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1279 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1282 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1284 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1288 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1291 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1293 ret->extra_certs=NULL;
1294 ret->comp_methods=SSL_COMP_get_compression_methods();
1298 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1300 if (ret != NULL) SSL_CTX_free(ret);
1305 static void SSL_COMP_free(SSL_COMP *comp)
1306 { OPENSSL_free(comp); }
1309 void SSL_CTX_free(SSL_CTX *a)
1313 if (a == NULL) return;
1315 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1317 REF_PRINT("SSL_CTX",a);
1323 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1327 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1329 if (a->sessions != NULL)
1331 SSL_CTX_flush_sessions(a,0);
1332 lh_free(a->sessions);
1334 if (a->cert_store != NULL)
1335 X509_STORE_free(a->cert_store);
1336 if (a->cipher_list != NULL)
1337 sk_SSL_CIPHER_free(a->cipher_list);
1338 if (a->cipher_list_by_id != NULL)
1339 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1340 if (a->cert != NULL)
1341 ssl_cert_free(a->cert);
1342 if (a->client_CA != NULL)
1343 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1344 if (a->extra_certs != NULL)
1345 sk_X509_pop_free(a->extra_certs,X509_free);
1346 #if 0 /* This should never be done, since it removes a global database */
1347 if (a->comp_methods != NULL)
1348 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1350 a->comp_methods = NULL;
1355 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1357 ctx->default_passwd_callback=cb;
1360 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1362 ctx->default_passwd_callback_userdata=u;
1365 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1368 * int (*cb)(X509_STORE_CTX *),
1370 * int (*cb)(X509_STORE_CTX *, void *arg)
1372 ctx->app_verify_callback=cb;
1373 ctx->app_verify_arg=arg; /* never used */
1376 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1378 ctx->verify_mode=mode;
1379 ctx->default_verify_callback=cb;
1382 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1384 ctx->verify_depth=depth;
1387 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1390 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1391 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1392 int rsa_tmp_export,dh_tmp_export,kl;
1393 unsigned long mask,emask;
1395 if (c == NULL) return;
1397 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1399 #ifndef OPENSSL_NO_RSA
1400 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1401 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1402 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1404 rsa_tmp=rsa_tmp_export=0;
1406 #ifndef OPENSSL_NO_DH
1407 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1408 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1409 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1411 dh_tmp=dh_tmp_export=0;
1414 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1415 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1416 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1417 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1418 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1419 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1420 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1421 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1422 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1423 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1424 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1425 /* FIX THIS EAY EAY EAY */
1426 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1427 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1433 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1434 rsa_tmp,rsa_tmp_export,dh_tmp,
1435 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1438 if (rsa_enc || (rsa_tmp && rsa_sign))
1440 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1444 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1445 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1446 (rsa_enc || rsa_sign || dsa_sign))
1448 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1449 (rsa_enc || rsa_sign || dsa_sign))
1459 if (dh_rsa) mask|=SSL_kDHr;
1460 if (dh_rsa_export) emask|=SSL_kDHr;
1462 if (dh_dsa) mask|=SSL_kDHd;
1463 if (dh_dsa_export) emask|=SSL_kDHd;
1465 if (rsa_enc || rsa_sign)
1480 #ifndef OPENSSL_NO_KRB5
1481 mask|=SSL_kKRB5|SSL_aKRB5;
1482 emask|=SSL_kKRB5|SSL_aKRB5;
1486 c->export_mask=emask;
1490 /* THIS NEEDS CLEANING UP */
1491 X509 *ssl_get_server_send_cert(SSL *s)
1493 unsigned long alg,mask,kalg;
1498 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1499 alg=s->s3->tmp.new_cipher->algorithms;
1500 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1501 mask=is_export?c->export_mask:c->mask;
1502 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1504 if (kalg & SSL_kDHr)
1506 else if (kalg & SSL_kDHd)
1508 else if (kalg & SSL_aDSS)
1509 i=SSL_PKEY_DSA_SIGN;
1510 else if (kalg & SSL_aRSA)
1512 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1513 i=SSL_PKEY_RSA_SIGN;
1517 else if (kalg & SSL_aKRB5)
1519 /* VRS something else here? */
1522 else /* if (kalg & SSL_aNULL) */
1524 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1527 if (c->pkeys[i].x509 == NULL) return(NULL);
1528 return(c->pkeys[i].x509);
1531 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1536 alg=cipher->algorithms;
1539 if ((alg & SSL_aDSS) &&
1540 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1541 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1542 else if (alg & SSL_aRSA)
1544 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1545 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1546 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1547 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1551 else /* if (alg & SSL_aNULL) */
1553 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1558 void ssl_update_cache(SSL *s,int mode)
1562 /* If the session_id_length is 0, we are not supposed to cache it,
1563 * and it would be rather hard to do anyway :-) */
1564 if (s->session->session_id_length == 0) return;
1566 if ((s->ctx->session_cache_mode & mode)
1568 && SSL_CTX_add_session(s->ctx,s->session)
1569 && (s->ctx->new_session_cb != NULL))
1571 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1572 if (!s->ctx->new_session_cb(s,s->session))
1573 SSL_SESSION_free(s->session);
1576 /* auto flush every 255 connections */
1577 i=s->ctx->session_cache_mode;
1578 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1579 ((i & mode) == mode))
1581 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1582 ?s->ctx->stats.sess_connect_good
1583 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1585 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1590 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1595 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1600 if (s->method != meth)
1602 if (s->handshake_func != NULL)
1603 conn=(s->handshake_func == s->method->ssl_connect);
1605 if (s->method->version == meth->version)
1609 s->method->ssl_free(s);
1611 ret=s->method->ssl_new(s);
1615 s->handshake_func=meth->ssl_connect;
1617 s->handshake_func=meth->ssl_accept;
1622 int SSL_get_error(SSL *s,int i)
1628 if (i > 0) return(SSL_ERROR_NONE);
1630 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1631 * etc, where we do encode the error */
1632 if ((l=ERR_peek_error()) != 0)
1634 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1635 return(SSL_ERROR_SYSCALL);
1637 return(SSL_ERROR_SSL);
1640 if ((i < 0) && SSL_want_read(s))
1642 bio=SSL_get_rbio(s);
1643 if (BIO_should_read(bio))
1644 return(SSL_ERROR_WANT_READ);
1645 else if (BIO_should_write(bio))
1646 /* This one doesn't make too much sense ... We never try
1647 * to write to the rbio, and an application program where
1648 * rbio and wbio are separate couldn't even know what it
1650 * However if we ever set s->rwstate incorrectly
1651 * (so that we have SSL_want_read(s) instead of
1652 * SSL_want_write(s)) and rbio and wbio *are* the same,
1653 * this test works around that bug; so it might be safer
1655 return(SSL_ERROR_WANT_WRITE);
1656 else if (BIO_should_io_special(bio))
1658 reason=BIO_get_retry_reason(bio);
1659 if (reason == BIO_RR_CONNECT)
1660 return(SSL_ERROR_WANT_CONNECT);
1661 else if (reason == BIO_RR_ACCEPT)
1662 return(SSL_ERROR_WANT_ACCEPT);
1664 return(SSL_ERROR_SYSCALL); /* unknown */
1668 if ((i < 0) && SSL_want_write(s))
1670 bio=SSL_get_wbio(s);
1671 if (BIO_should_write(bio))
1672 return(SSL_ERROR_WANT_WRITE);
1673 else if (BIO_should_read(bio))
1674 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1675 return(SSL_ERROR_WANT_READ);
1676 else if (BIO_should_io_special(bio))
1678 reason=BIO_get_retry_reason(bio);
1679 if (reason == BIO_RR_CONNECT)
1680 return(SSL_ERROR_WANT_CONNECT);
1681 else if (reason == BIO_RR_ACCEPT)
1682 return(SSL_ERROR_WANT_ACCEPT);
1684 return(SSL_ERROR_SYSCALL);
1687 if ((i < 0) && SSL_want_x509_lookup(s))
1689 return(SSL_ERROR_WANT_X509_LOOKUP);
1694 if (s->version == SSL2_VERSION)
1696 /* assume it is the socket being closed */
1697 return(SSL_ERROR_ZERO_RETURN);
1701 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1702 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1703 return(SSL_ERROR_ZERO_RETURN);
1706 return(SSL_ERROR_SYSCALL);
1709 int SSL_do_handshake(SSL *s)
1713 if (s->handshake_func == NULL)
1715 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1719 s->method->ssl_renegotiate_check(s);
1721 if (SSL_in_init(s) || SSL_in_before(s))
1723 ret=s->handshake_func(s);
1728 /* For the next 2 functions, SSL_clear() sets shutdown and so
1729 * one of these calls will reset it */
1730 void SSL_set_accept_state(SSL *s)
1734 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1735 s->handshake_func=s->method->ssl_accept;
1736 /* clear the current cipher */
1737 ssl_clear_cipher_ctx(s);
1740 void SSL_set_connect_state(SSL *s)
1744 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1745 s->handshake_func=s->method->ssl_connect;
1746 /* clear the current cipher */
1747 ssl_clear_cipher_ctx(s);
1750 int ssl_undefined_function(SSL *s)
1752 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1756 SSL_METHOD *ssl_bad_method(int ver)
1758 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1762 const char *SSL_get_version(SSL *s)
1764 if (s->version == TLS1_VERSION)
1766 else if (s->version == SSL3_VERSION)
1768 else if (s->version == SSL2_VERSION)
1774 SSL *SSL_dup(SSL *s)
1776 STACK_OF(X509_NAME) *sk;
1781 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1784 if (s->session != NULL)
1786 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1787 SSL_copy_session_id(ret,s);
1791 /* No session has been established yet, so we have to expect
1792 * that s->cert or ret->cert will be changed later --
1793 * they should not both point to the same object,
1794 * and thus we can't use SSL_copy_session_id. */
1796 ret->method = s->method;
1797 ret->method->ssl_new(ret);
1799 if (s->cert != NULL)
1801 if (ret->cert != NULL)
1803 ssl_cert_free(ret->cert);
1805 ret->cert = ssl_cert_dup(s->cert);
1806 if (ret->cert == NULL)
1810 SSL_set_session_id_context(ret,
1811 s->sid_ctx, s->sid_ctx_length);
1814 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
1815 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1816 SSL_set_verify(ret,SSL_get_verify_mode(s),
1817 SSL_get_verify_callback(s));
1818 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1820 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1822 ret->debug=s->debug;
1823 ret->options=s->options;
1825 /* copy app data, a little dangerous perhaps */
1826 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
1829 /* setup rbio, and wbio */
1830 if (s->rbio != NULL)
1832 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1835 if (s->wbio != NULL)
1837 if (s->wbio != s->rbio)
1839 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1843 ret->wbio=ret->rbio;
1846 /* dup the cipher_list and cipher_list_by_id stacks */
1847 if (s->cipher_list != NULL)
1849 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1852 if (s->cipher_list_by_id != NULL)
1853 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1857 /* Dup the client_CA list */
1858 if (s->client_CA != NULL)
1860 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1862 for (i=0; i<sk_X509_NAME_num(sk); i++)
1864 xn=sk_X509_NAME_value(sk,i);
1865 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1873 ret->shutdown=s->shutdown;
1874 ret->state=s->state;
1875 ret->handshake_func=s->handshake_func;
1876 ret->server=s->server;
1881 if (ret != NULL) SSL_free(ret);
1887 void ssl_clear_cipher_ctx(SSL *s)
1889 if (s->enc_read_ctx != NULL)
1891 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1892 OPENSSL_free(s->enc_read_ctx);
1893 s->enc_read_ctx=NULL;
1895 if (s->enc_write_ctx != NULL)
1897 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1898 OPENSSL_free(s->enc_write_ctx);
1899 s->enc_write_ctx=NULL;
1901 if (s->expand != NULL)
1903 COMP_CTX_free(s->expand);
1906 if (s->compress != NULL)
1908 COMP_CTX_free(s->compress);
1913 /* Fix this function so that it takes an optional type parameter */
1914 X509 *SSL_get_certificate(SSL *s)
1916 if (s->cert != NULL)
1917 return(s->cert->key->x509);
1922 /* Fix this function so that it takes an optional type parameter */
1923 EVP_PKEY *SSL_get_privatekey(SSL *s)
1925 if (s->cert != NULL)
1926 return(s->cert->key->privatekey);
1931 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1933 if ((s->session != NULL) && (s->session->cipher != NULL))
1934 return(s->session->cipher);
1938 int ssl_init_wbio_buffer(SSL *s,int push)
1942 if (s->bbio == NULL)
1944 bbio=BIO_new(BIO_f_buffer());
1945 if (bbio == NULL) return(0);
1951 if (s->bbio == s->wbio)
1952 s->wbio=BIO_pop(s->wbio);
1954 (void)BIO_reset(bbio);
1955 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1956 if (!BIO_set_read_buffer_size(bbio,1))
1958 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1963 if (s->wbio != bbio)
1964 s->wbio=BIO_push(bbio,s->wbio);
1968 if (s->wbio == bbio)
1969 s->wbio=BIO_pop(bbio);
1974 void ssl_free_wbio_buffer(SSL *s)
1976 if (s->bbio == NULL) return;
1978 if (s->bbio == s->wbio)
1980 /* remove buffering */
1981 s->wbio=BIO_pop(s->wbio);
1982 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1983 assert(s->wbio != NULL);
1990 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1992 ctx->quiet_shutdown=mode;
1995 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1997 return(ctx->quiet_shutdown);
2000 void SSL_set_quiet_shutdown(SSL *s,int mode)
2002 s->quiet_shutdown=mode;
2005 int SSL_get_quiet_shutdown(SSL *s)
2007 return(s->quiet_shutdown);
2010 void SSL_set_shutdown(SSL *s,int mode)
2015 int SSL_get_shutdown(SSL *s)
2017 return(s->shutdown);
2020 int SSL_version(SSL *s)
2025 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2030 #ifndef OPENSSL_NO_STDIO
2031 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2033 return(X509_STORE_set_default_paths(ctx->cert_store));
2036 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2039 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2043 void SSL_set_info_callback(SSL *ssl,void (*cb)())
2045 ssl->info_callback=cb;
2048 void (*SSL_get_info_callback(SSL *ssl))(void)
2050 return((void (*)())ssl->info_callback);
2053 int SSL_state(SSL *ssl)
2058 void SSL_set_verify_result(SSL *ssl,long arg)
2060 ssl->verify_result=arg;
2063 long SSL_get_verify_result(SSL *ssl)
2065 return(ssl->verify_result);
2068 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2069 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2071 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2072 new_func, dup_func, free_func);
2075 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2077 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2080 void *SSL_get_ex_data(SSL *s,int idx)
2082 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2085 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2086 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2088 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2089 new_func, dup_func, free_func);
2092 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2094 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2097 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2099 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2107 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2109 return(ctx->cert_store);
2112 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2114 if (ctx->cert_store != NULL)
2115 X509_STORE_free(ctx->cert_store);
2116 ctx->cert_store=store;
2119 int SSL_want(SSL *s)
2125 * \brief Set the callback for generating temporary RSA keys.
2126 * \param ctx the SSL context.
2127 * \param cb the callback
2130 #ifndef OPENSSL_NO_RSA
2131 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2135 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2138 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2142 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2148 * \brief The RSA temporary key callback function.
2149 * \param ssl the SSL session.
2150 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2151 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2152 * of the required key in bits.
2153 * \return the temporary RSA key.
2154 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2157 RSA *cb(SSL *ssl,int is_export,int keylength)
2162 * \brief Set the callback for generating temporary DH keys.
2163 * \param ctx the SSL context.
2164 * \param dh the callback
2167 #ifndef OPENSSL_NO_DH
2168 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2171 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2174 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2177 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2181 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2182 #include "../crypto/bio/bss_file.c"
2185 IMPLEMENT_STACK_OF(SSL_CIPHER)
2186 IMPLEMENT_STACK_OF(SSL_COMP)