2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
69 static int ssl_write(BIO *h,char *buf,int num);
70 static int ssl_read(BIO *h,char *buf,int size);
71 static int ssl_puts(BIO *h,char *str);
72 static long ssl_ctrl(BIO *h,int cmd,long arg1,char *arg2);
73 static int ssl_new(BIO *h);
74 static int ssl_free(BIO *data);
76 static int ssl_write();
77 static int ssl_read();
78 static int ssl_puts();
79 static long ssl_ctrl();
81 static int ssl_free();
84 typedef struct bio_ssl_st
86 SSL *ssl; /* The ssl handle :-) */
87 /* re-negotiate every time the total number of bytes is this size */
89 unsigned long renegotiate_count;
90 unsigned long byte_count;
91 unsigned long renegotiate_timeout;
92 unsigned long last_time;
95 static BIO_METHOD methods_sslp=
101 NULL, /* ssl_gets, */
107 BIO_METHOD *BIO_f_ssl()
109 return(&methods_sslp);
112 static int ssl_new(bi)
117 bs=(BIO_SSL *)Malloc(sizeof(BIO_SSL));
120 BIOerr(BIO_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
123 memset(bs,0,sizeof(BIO_SSL));
130 static int ssl_free(a)
135 if (a == NULL) return(0);
136 bs=(BIO_SSL *)a->ptr;
137 if (bs->ssl != NULL) SSL_shutdown(bs->ssl);
140 if (a->init && (bs->ssl != NULL))
150 static int ssl_read(b,out,outl)
161 if (out == NULL) return(0);
162 sb=(BIO_SSL *)b->ptr;
165 BIO_clear_retry_flags(b);
168 if (!SSL_is_init_finished(ssl))
170 /* ret=SSL_do_handshake(ssl); */
174 outflags=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
181 ret=SSL_read(ssl,out,outl);
183 switch (SSL_get_error(ssl,ret))
187 if (sb->renegotiate_count > 0)
190 if (sb->byte_count > sb->renegotiate_count)
193 sb->num_renegotiates++;
194 SSL_renegotiate(ssl);
198 if ((sb->renegotiate_timeout > 0) && (!r))
202 tm=(unsigned long)time(NULL);
203 if (tm > sb->last_time+sb->renegotiate_timeout)
206 sb->num_renegotiates++;
207 SSL_renegotiate(ssl);
212 case SSL_ERROR_WANT_READ:
213 BIO_set_retry_read(b);
215 case SSL_ERROR_WANT_WRITE:
216 BIO_set_retry_write(b);
218 case SSL_ERROR_WANT_X509_LOOKUP:
219 BIO_set_retry_special(b);
220 retry_reason=BIO_RR_SSL_X509_LOOKUP;
222 case SSL_ERROR_WANT_CONNECT:
223 BIO_set_retry_special(b);
224 retry_reason=BIO_RR_CONNECT;
226 case SSL_ERROR_SYSCALL:
228 case SSL_ERROR_ZERO_RETURN:
233 b->retry_reason=retry_reason;
237 static int ssl_write(b,out,outl)
247 if (out == NULL) return(0);
248 bs=(BIO_SSL *)b->ptr;
251 BIO_clear_retry_flags(b);
253 /* ret=SSL_do_handshake(ssl);
255 ret=SSL_write(ssl,out,outl);
257 switch (SSL_get_error(ssl,ret))
261 if (bs->renegotiate_count > 0)
264 if (bs->byte_count > bs->renegotiate_count)
267 bs->num_renegotiates++;
268 SSL_renegotiate(ssl);
272 if ((bs->renegotiate_timeout > 0) && (!r))
276 tm=(unsigned long)time(NULL);
277 if (tm > bs->last_time+bs->renegotiate_timeout)
280 bs->num_renegotiates++;
281 SSL_renegotiate(ssl);
285 case SSL_ERROR_WANT_WRITE:
286 BIO_set_retry_write(b);
288 case SSL_ERROR_WANT_READ:
289 BIO_set_retry_read(b);
291 case SSL_ERROR_WANT_X509_LOOKUP:
292 BIO_set_retry_special(b);
293 retry_reason=BIO_RR_SSL_X509_LOOKUP;
295 case SSL_ERROR_WANT_CONNECT:
296 BIO_set_retry_special(b);
297 retry_reason=BIO_RR_CONNECT;
298 case SSL_ERROR_SYSCALL:
304 b->retry_reason=retry_reason;
308 static long ssl_ctrl(b,cmd,num,ptr)
319 bs=(BIO_SSL *)b->ptr;
321 if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
328 if (ssl->handshake_func == ssl->method->ssl_connect)
329 SSL_set_connect_state(ssl);
330 else if (ssl->handshake_func == ssl->method->ssl_accept)
331 SSL_set_accept_state(ssl);
335 if (b->next_bio != NULL)
336 ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
337 else if (ssl->rbio != NULL)
338 ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
346 if (num) /* client mode */
347 SSL_set_connect_state(ssl);
349 SSL_set_accept_state(ssl);
351 case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
352 ret=bs->renegotiate_timeout;
354 bs->renegotiate_timeout=(unsigned long)num;
355 bs->last_time=(unsigned long)time(NULL);
357 case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
358 ret=bs->renegotiate_count;
360 bs->renegotiate_count=(unsigned long)num;
362 case BIO_C_GET_SSL_NUM_RENEGOTIATES:
363 ret=bs->num_renegotiates;
368 b->shutdown=(int)num;
370 ((BIO_SSL *)b->ptr)->ssl=ssl;
371 bio=SSL_get_rbio(ssl);
374 if (b->next_bio != NULL)
375 BIO_push(bio,b->next_bio);
377 CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO);
390 case BIO_CTRL_GET_CLOSE:
393 case BIO_CTRL_SET_CLOSE:
394 b->shutdown=(int)num;
396 case BIO_CTRL_WPENDING:
397 ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
399 case BIO_CTRL_PENDING:
400 ret=SSL_pending(ssl);
402 ret=BIO_pending(ssl->rbio);
405 BIO_clear_retry_flags(b);
406 ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
407 BIO_copy_next_retry(b);
410 if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio))
412 SSL_set_bio(ssl,b->next_bio,b->next_bio);
413 CRYPTO_add(&b->next_bio->references,1,CRYPTO_LOCK_BIO);
417 /* ugly bit of a hack */
418 if (ssl->rbio != ssl->wbio) /* we are in trouble :-( */
420 BIO_free_all(ssl->wbio);
425 case BIO_C_DO_STATE_MACHINE:
426 BIO_clear_retry_flags(b);
429 ret=(int)SSL_do_handshake(ssl);
431 switch (SSL_get_error(ssl,(int)ret))
433 case SSL_ERROR_WANT_READ:
435 BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
437 case SSL_ERROR_WANT_WRITE:
439 BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
441 case SSL_ERROR_WANT_CONNECT:
443 BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
444 b->retry_reason=b->next_bio->retry_reason;
452 if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
453 SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
454 ((BIO_SSL *)dbio->ptr)->ssl=SSL_dup(ssl);
455 ((BIO_SSL *)dbio->ptr)->renegotiate_count=
456 ((BIO_SSL *)b->ptr)->renegotiate_count;
457 ((BIO_SSL *)dbio->ptr)->byte_count=
458 ((BIO_SSL *)b->ptr)->byte_count;
459 ((BIO_SSL *)dbio->ptr)->renegotiate_timeout=
460 ((BIO_SSL *)b->ptr)->renegotiate_timeout;
461 ((BIO_SSL *)dbio->ptr)->last_time=
462 ((BIO_SSL *)b->ptr)->last_time;
463 ret=(((BIO_SSL *)dbio->ptr)->ssl != NULL);
466 ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
468 case BIO_CTRL_SET_CALLBACK:
469 SSL_set_info_callback(ssl,(void (*)())ptr);
471 case BIO_CTRL_GET_CALLBACK:
475 fptr=(void (**)())ptr;
476 *fptr=SSL_get_info_callback(ssl);
480 ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
486 static int ssl_puts(bp,str)
493 ret=BIO_write(bp,str,n);
497 BIO *BIO_new_buffer_ssl_connect(ctx)
500 BIO *ret=NULL,*buf=NULL,*ssl=NULL;
502 if ((buf=BIO_new(BIO_f_buffer())) == NULL)
504 if ((ssl=BIO_new_ssl_connect(ctx)) == NULL)
506 if ((ret=BIO_push(buf,ssl)) == NULL)
510 if (buf != NULL) BIO_free(buf);
511 if (ssl != NULL) BIO_free(ssl);
515 BIO *BIO_new_ssl_connect(ctx)
518 BIO *ret=NULL,*con=NULL,*ssl=NULL;
520 if ((con=BIO_new(BIO_s_connect())) == NULL)
522 if ((ssl=BIO_new_ssl(ctx,1)) == NULL)
524 if ((ret=BIO_push(ssl,con)) == NULL)
528 if (con != NULL) BIO_free(con);
529 if (ret != NULL) BIO_free(ret);
533 BIO *BIO_new_ssl(ctx,client)
540 if ((ret=BIO_new(BIO_f_ssl())) == NULL)
542 if ((ssl=SSL_new(ctx)) == NULL)
548 SSL_set_connect_state(ssl);
550 SSL_set_accept_state(ssl);
552 BIO_set_ssl(ret,ssl,BIO_CLOSE);
556 int BIO_ssl_copy_session_id(t,f)
559 t=BIO_find_type(t,BIO_TYPE_SSL);
560 f=BIO_find_type(f,BIO_TYPE_SSL);
561 if ((t == NULL) || (f == NULL))
563 if ( (((BIO_SSL *)t->ptr)->ssl == NULL) ||
564 (((BIO_SSL *)f->ptr)->ssl == NULL))
566 SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl,((BIO_SSL *)f->ptr)->ssl);
570 void BIO_ssl_shutdown(b)
577 if (b->method->type == BIO_TYPE_SSL)
579 s=((BIO_SSL *)b->ptr)->ssl;