Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libssl/bio_ssl.c	Lines:	69	247	27.9 %
Date:	2017-11-07	Branches:	27	144	18.8 %


/* $OpenBSD: bio_ssl.c,v 1.27 2017/02/07 02:08:38 beck Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/ssl.h>

#include "ssl_locl.h"

static int ssl_write(BIO *h, const char *buf, int num);
static int ssl_read(BIO *h, char *buf, int size);
static int ssl_puts(BIO *h, const char *str);
static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int ssl_new(BIO *h);
static int ssl_free(BIO *data);
static long ssl_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
typedef struct bio_ssl_st {
	SSL *ssl; /* The ssl handle :-) */
	/* re-negotiate every time the total number of bytes is this size */
	int num_renegotiates;
	unsigned long renegotiate_count;
	unsigned long byte_count;
	unsigned long renegotiate_timeout;
	time_t last_time;
} BIO_SSL;

static BIO_METHOD methods_sslp = {
	.type = BIO_TYPE_SSL,
	.name = "ssl",
	.bwrite = ssl_write,
	.bread = ssl_read,
	.bputs = ssl_puts,
	.ctrl = ssl_ctrl,
	.create = ssl_new,
	.destroy = ssl_free,
	.callback_ctrl = ssl_callback_ctrl,
};

BIO_METHOD *
BIO_f_ssl(void)
{
	return (&methods_sslp);
}

static int
ssl_new(BIO *bi)
{
	BIO_SSL *bs;

	bs = calloc(1, sizeof(BIO_SSL));
	if (bs == NULL) {
		SSLerrorx(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	bi->init = 0;
	bi->ptr = (char *)bs;
	bi->flags = 0;
	return (1);
}

static int
ssl_free(BIO *a)
{
	BIO_SSL *bs;

	if (a == NULL)
		return (0);
	bs = (BIO_SSL *)a->ptr;
	if (bs->ssl != NULL)
		SSL_shutdown(bs->ssl);
	if (a->shutdown) {
		if (a->init && (bs->ssl != NULL))
			SSL_free(bs->ssl);
		a->init = 0;
		a->flags = 0;
	}
	free(a->ptr);
	return (1);
}

static int
ssl_read(BIO *b, char *out, int outl)
{
	int ret = 1;
	BIO_SSL *sb;
	SSL *ssl;
	int retry_reason = 0;
	int r = 0;

	if (out == NULL)
		return (0);
	sb = (BIO_SSL *)b->ptr;
	ssl = sb->ssl;

	BIO_clear_retry_flags(b);

	ret = SSL_read(ssl, out, outl);

	switch (SSL_get_error(ssl, ret)) {
	case SSL_ERROR_NONE:
		if (ret <= 0)
			break;
		if (sb->renegotiate_count > 0) {
			sb->byte_count += ret;
			if (sb->byte_count > sb->renegotiate_count) {
				sb->byte_count = 0;
				sb->num_renegotiates++;
				SSL_renegotiate(ssl);
				r = 1;
			}
		}
		if ((sb->renegotiate_timeout > 0) && (!r)) {
			time_t tm;

			tm = time(NULL);
			if (tm > sb->last_time + sb->renegotiate_timeout) {
				sb->last_time = tm;
				sb->num_renegotiates++;
				SSL_renegotiate(ssl);
			}
		}

		break;
	case SSL_ERROR_WANT_READ:
		BIO_set_retry_read(b);
		break;
	case SSL_ERROR_WANT_WRITE:
		BIO_set_retry_write(b);
		break;
	case SSL_ERROR_WANT_X509_LOOKUP:
		BIO_set_retry_special(b);
		retry_reason = BIO_RR_SSL_X509_LOOKUP;
		break;
	case SSL_ERROR_WANT_ACCEPT:
		BIO_set_retry_special(b);
		retry_reason = BIO_RR_ACCEPT;
		break;
	case SSL_ERROR_WANT_CONNECT:
		BIO_set_retry_special(b);
		retry_reason = BIO_RR_CONNECT;
		break;
	case SSL_ERROR_SYSCALL:
	case SSL_ERROR_SSL:
	case SSL_ERROR_ZERO_RETURN:
	default:
		break;
	}

	b->retry_reason = retry_reason;
	return (ret);
}

static int
ssl_write(BIO *b, const char *out, int outl)
{
	int ret, r = 0;
	int retry_reason = 0;
	SSL *ssl;
	BIO_SSL *bs;

	if (out == NULL)
		return (0);
	bs = (BIO_SSL *)b->ptr;
	ssl = bs->ssl;

	BIO_clear_retry_flags(b);

/*	ret=SSL_do_handshake(ssl);
	if (ret > 0) */
		ret = SSL_write(ssl, out, outl);

	switch (SSL_get_error(ssl, ret)) {
	case SSL_ERROR_NONE:
		if (ret <= 0)
			break;
		if (bs->renegotiate_count > 0) {
			bs->byte_count += ret;
			if (bs->byte_count > bs->renegotiate_count) {
				bs->byte_count = 0;
				bs->num_renegotiates++;
				SSL_renegotiate(ssl);
				r = 1;
			}
		}
		if ((bs->renegotiate_timeout > 0) && (!r)) {
			time_t tm;

			tm = time(NULL);
			if (tm > bs->last_time + bs->renegotiate_timeout) {
				bs->last_time = tm;
				bs->num_renegotiates++;
				SSL_renegotiate(ssl);
			}
		}
		break;
	case SSL_ERROR_WANT_WRITE:
		BIO_set_retry_write(b);
		break;
	case SSL_ERROR_WANT_READ:
		BIO_set_retry_read(b);
		break;
	case SSL_ERROR_WANT_X509_LOOKUP:
		BIO_set_retry_special(b);
		retry_reason = BIO_RR_SSL_X509_LOOKUP;
		break;
	case SSL_ERROR_WANT_CONNECT:
		BIO_set_retry_special(b);
		retry_reason = BIO_RR_CONNECT;
	case SSL_ERROR_SYSCALL:
	case SSL_ERROR_SSL:
	default:
		break;
	}

	b->retry_reason = retry_reason;
	return (ret);
}

static long
ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
{
	SSL **sslp, *ssl;
	BIO_SSL *bs;
	BIO *dbio, *bio;
	long ret = 1;

	bs = (BIO_SSL *)b->ptr;
	ssl = bs->ssl;
	if ((ssl == NULL)  && (cmd != BIO_C_SET_SSL))
		return (0);
	switch (cmd) {
	case BIO_CTRL_RESET:
		SSL_shutdown(ssl);

		if (ssl->internal->handshake_func ==
		    ssl->method->internal->ssl_connect)
			SSL_set_connect_state(ssl);
		else if (ssl->internal->handshake_func ==
		    ssl->method->internal->ssl_accept)
			SSL_set_accept_state(ssl);

		SSL_clear(ssl);

		if (b->next_bio != NULL)
			ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
		else if (ssl->rbio != NULL)
			ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
		else
			ret = 1;
		break;
	case BIO_CTRL_INFO:
		ret = 0;
		break;
	case BIO_C_SSL_MODE:
		if (num) /* client mode */
			SSL_set_connect_state(ssl);
		else
			SSL_set_accept_state(ssl);
		break;
	case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
		ret = bs->renegotiate_timeout;
		if (num < 60)
			num = 5;
		bs->renegotiate_timeout = (unsigned long)num;
		bs->last_time = time(NULL);
		break;
	case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
		ret = bs->renegotiate_count;
		if ((long)num >=512)
			bs->renegotiate_count = (unsigned long)num;
		break;
	case BIO_C_GET_SSL_NUM_RENEGOTIATES:
		ret = bs->num_renegotiates;
		break;
	case BIO_C_SET_SSL:
		if (ssl != NULL) {
			ssl_free(b);
			if (!ssl_new(b))
				return 0;
		}
		b->shutdown = (int)num;
		ssl = (SSL *)ptr;
		((BIO_SSL *)b->ptr)->ssl = ssl;
		bio = SSL_get_rbio(ssl);
		if (bio != NULL) {
			if (b->next_bio != NULL)
				BIO_push(bio, b->next_bio);
			b->next_bio = bio;
			CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO);
		}
		b->init = 1;
		break;
	case BIO_C_GET_SSL:
		if (ptr != NULL) {
			sslp = (SSL **)ptr;
			*sslp = ssl;
		} else
			ret = 0;
		break;
	case BIO_CTRL_GET_CLOSE:
		ret = b->shutdown;
		break;
	case BIO_CTRL_SET_CLOSE:
		b->shutdown = (int)num;
		break;
	case BIO_CTRL_WPENDING:
		ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
		break;
	case BIO_CTRL_PENDING:
		ret = SSL_pending(ssl);
		if (ret == 0)
			ret = BIO_pending(ssl->rbio);
		break;
	case BIO_CTRL_FLUSH:
		BIO_clear_retry_flags(b);
		ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
		BIO_copy_next_retry(b);
		break;
	case BIO_CTRL_PUSH:
		if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio)) {
			SSL_set_bio(ssl, b->next_bio, b->next_bio);
			CRYPTO_add(&b->next_bio->references, 1,
			    CRYPTO_LOCK_BIO);
		}
		break;
	case BIO_CTRL_POP:
		/* Only detach if we are the BIO explicitly being popped */
		if (b == ptr) {
			/* Shouldn't happen in practice because the
			 * rbio and wbio are the same when pushed.
			 */
			if (ssl->rbio != ssl->wbio)
				BIO_free_all(ssl->wbio);
			if (b->next_bio != NULL)
				CRYPTO_add(&b->next_bio->references, -1, CRYPTO_LOCK_BIO);
			ssl->wbio = NULL;
			ssl->rbio = NULL;
		}
		break;
	case BIO_C_DO_STATE_MACHINE:
		BIO_clear_retry_flags(b);

		b->retry_reason = 0;
		ret = (int)SSL_do_handshake(ssl);

		switch (SSL_get_error(ssl, (int)ret)) {
		case SSL_ERROR_WANT_READ:
			BIO_set_flags(b,
			    BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
			break;
		case SSL_ERROR_WANT_WRITE:
			BIO_set_flags(b,
			    BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
			break;
		case SSL_ERROR_WANT_CONNECT:
			BIO_set_flags(b,
			    BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
			b->retry_reason = b->next_bio->retry_reason;
			break;
		default:
			break;
		}
		break;
	case BIO_CTRL_DUP:
		dbio = (BIO *)ptr;
		if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
			SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
		((BIO_SSL *)dbio->ptr)->ssl = SSL_dup(ssl);
		((BIO_SSL *)dbio->ptr)->renegotiate_count =
		    ((BIO_SSL *)b->ptr)->renegotiate_count;
		((BIO_SSL *)dbio->ptr)->byte_count =
		    ((BIO_SSL *)b->ptr)->byte_count;
		((BIO_SSL *)dbio->ptr)->renegotiate_timeout =
		    ((BIO_SSL *)b->ptr)->renegotiate_timeout;
		((BIO_SSL *)dbio->ptr)->last_time =
		    ((BIO_SSL *)b->ptr)->last_time;
		ret = (((BIO_SSL *)dbio->ptr)->ssl != NULL);
		break;
	case BIO_C_GET_FD:
		ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
		break;
	case BIO_CTRL_SET_CALLBACK:
		{
			ret = 0;
		}
		break;
	case BIO_CTRL_GET_CALLBACK:
		{
			void (**fptr)(const SSL *xssl, int type, int val);

			fptr = (void (**)(const SSL *xssl, int type, int val))
			    ptr;
			*fptr = SSL_get_info_callback(ssl);
		}
		break;
	default:
		ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
		break;
	}
	return (ret);
}

static long
ssl_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
{
	SSL *ssl;
	BIO_SSL *bs;
	long ret = 1;

	bs = (BIO_SSL *)b->ptr;
	ssl = bs->ssl;
	switch (cmd) {
	case BIO_CTRL_SET_CALLBACK:
		{
		/* FIXME: setting this via a completely different prototype
		   seems like a crap idea */
			SSL_set_info_callback(ssl,
			    (void (*)(const SSL *, int, int))fp);
		}
		break;
	default:
		ret = BIO_callback_ctrl(ssl->rbio, cmd, fp);
		break;
	}
	return (ret);
}

static int
ssl_puts(BIO *bp, const char *str)
{
	int n, ret;

	n = strlen(str);
	ret = BIO_write(bp, str, n);
	return (ret);
}

BIO *
BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
{
	BIO *ret = NULL, *buf = NULL, *ssl = NULL;

	if ((buf = BIO_new(BIO_f_buffer())) == NULL)
		goto err;
	if ((ssl = BIO_new_ssl_connect(ctx)) == NULL)
		goto err;
	if ((ret = BIO_push(buf, ssl)) == NULL)
		goto err;
	return (ret);

err:
	BIO_free(buf);
	BIO_free(ssl);
	return (NULL);
}

BIO *
BIO_new_ssl_connect(SSL_CTX *ctx)
{
	BIO *ret = NULL, *con = NULL, *ssl = NULL;

	if ((con = BIO_new(BIO_s_connect())) == NULL)
		goto err;
	if ((ssl = BIO_new_ssl(ctx, 1)) == NULL)
		goto err;
	if ((ret = BIO_push(ssl, con)) == NULL)
		goto err;
	return (ret);

err:
	BIO_free(con);
	BIO_free(ssl);
	return (NULL);
}

BIO *
BIO_new_ssl(SSL_CTX *ctx, int client)
{
	BIO *ret;
	SSL *ssl;

	if ((ret = BIO_new(BIO_f_ssl())) == NULL)
		goto err;
	if ((ssl = SSL_new(ctx)) == NULL)
		goto err;

	if (client)
		SSL_set_connect_state(ssl);
	else
		SSL_set_accept_state(ssl);

	BIO_set_ssl(ret, ssl, BIO_CLOSE);
	return (ret);

err:
	BIO_free(ret);
	return (NULL);
}

int
BIO_ssl_copy_session_id(BIO *t, BIO *f)
{
	t = BIO_find_type(t, BIO_TYPE_SSL);
	f = BIO_find_type(f, BIO_TYPE_SSL);
	if ((t == NULL) || (f == NULL))
		return (0);
	if ((((BIO_SSL *)t->ptr)->ssl == NULL) ||
	    (((BIO_SSL *)f->ptr)->ssl == NULL))
		return (0);
	SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl, ((BIO_SSL *)f->ptr)->ssl);
	return (1);
}

void
BIO_ssl_shutdown(BIO *b)
{
	SSL *s;

	while (b != NULL) {
		if (b->method->type == BIO_TYPE_SSL) {
			s = ((BIO_SSL *)b->ptr)->ssl;
			SSL_shutdown(s);
			break;
		}
		b = b->next_bio;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: bio_ssl.c,v 1.27 2017/02/07 02:08:38 beck Exp $ */
2			/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3			* All rights reserved.
4			*
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.
8			*
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).
15			*
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.
22			*
23			* Redistribution and use in source and binary forms, with or without
24			* modification, are permitted provided that the following conditions
25			* are met:
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)"
40			*
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
51			* SUCH DAMAGE.
52			*
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.]
57			*/
58
59			#include <errno.h>
60			#include <stdio.h>
61			#include <stdlib.h>
62			#include <string.h>
63
64			#include <openssl/bio.h>
65			#include <openssl/crypto.h>
66			#include <openssl/err.h>
67			#include <openssl/ssl.h>
68
69			#include "ssl_locl.h"
70
71			static int ssl_write(BIO h, const char buf, int num);
72			static int ssl_read(BIO h, char buf, int size);
73			static int ssl_puts(BIO h, const char str);
74			static long ssl_ctrl(BIO h, int cmd, long arg1, void arg2);
75			static int ssl_new(BIO *h);
76			static int ssl_free(BIO *data);
77			static long ssl_callback_ctrl(BIO h, int cmd, bio_info_cb fp);
78			typedef struct bio_ssl_st {
79			SSL ssl; / The ssl handle :-) */
80			/* re-negotiate every time the total number of bytes is this size */
81			int num_renegotiates;
82			unsigned long renegotiate_count;
83			unsigned long byte_count;
84			unsigned long renegotiate_timeout;
85			time_t last_time;
86			} BIO_SSL;
87
88			static BIO_METHOD methods_sslp = {
89			.type = BIO_TYPE_SSL,
90			.name = "ssl",
91			.bwrite = ssl_write,
92			.bread = ssl_read,
93			.bputs = ssl_puts,
94			.ctrl = ssl_ctrl,
95			.create = ssl_new,
96			.destroy = ssl_free,
97			.callback_ctrl = ssl_callback_ctrl,
98			};
99
100			BIO_METHOD *
101			BIO_f_ssl(void)
102			{
103		960	return (&methods_sslp);
104			}
105
106			static int
107			ssl_new(BIO *bi)
108			{
109			BIO_SSL *bs;
110
111		960	bs = calloc(1, sizeof(BIO_SSL));
112	✗✓	480	if (bs == NULL) {
113			SSLerrorx(ERR_R_MALLOC_FAILURE);
114			return (0);
115			}
116		480	bi->init = 0;
117		480	bi->ptr = (char *)bs;
118		480	bi->flags = 0;
119		480	return (1);
120		480	}
121
122			static int
123			ssl_free(BIO *a)
124			{
125			BIO_SSL *bs;
126
127	✗✓	960	if (a == NULL)
128			return (0);
129		480	bs = (BIO_SSL *)a->ptr;
130	✓✗	480	if (bs->ssl != NULL)
131		480	SSL_shutdown(bs->ssl);
132	✗✓	480	if (a->shutdown) {
133			if (a->init && (bs->ssl != NULL))
134			SSL_free(bs->ssl);
135			a->init = 0;
136			a->flags = 0;
137			}
138		480	free(a->ptr);
139		480	return (1);
140		480	}
141
142			static int
143			ssl_read(BIO b, char out, int outl)
144			{
145			int ret = 1;
146			BIO_SSL *sb;
147			SSL *ssl;
148			int retry_reason = 0;
149			int r = 0;
150
151	✗✓	12816	if (out == NULL)
152			return (0);
153		12816	sb = (BIO_SSL *)b->ptr;
154		12816	ssl = sb->ssl;
155
156		12816	BIO_clear_retry_flags(b);
157
158		12816	ret = SSL_read(ssl, out, outl);
159
160	✓✓✓✗ ✗✗✓	12816	switch (SSL_get_error(ssl, ret)) {
161			case SSL_ERROR_NONE:
162	✓✗	480	if (ret <= 0)
163			break;
164	✗✓	480	if (sb->renegotiate_count > 0) {
165			sb->byte_count += ret;
166			if (sb->byte_count > sb->renegotiate_count) {
167			sb->byte_count = 0;
168			sb->num_renegotiates++;
169			SSL_renegotiate(ssl);
170			r = 1;
171			}
172			}
173	✗✓	480	if ((sb->renegotiate_timeout > 0) && (!r)) {
174			time_t tm;
175
176			tm = time(NULL);
177			if (tm > sb->last_time + sb->renegotiate_timeout) {
178			sb->last_time = tm;
179			sb->num_renegotiates++;
180			SSL_renegotiate(ssl);
181			}
182			}
183
184			break;
185			case SSL_ERROR_WANT_READ:
186		5184	BIO_set_retry_read(b);
187		5184	break;
188			case SSL_ERROR_WANT_WRITE:
189		744	BIO_set_retry_write(b);
190		744	break;
191			case SSL_ERROR_WANT_X509_LOOKUP:
192			BIO_set_retry_special(b);
193			retry_reason = BIO_RR_SSL_X509_LOOKUP;
194			break;
195			case SSL_ERROR_WANT_ACCEPT:
196			BIO_set_retry_special(b);
197			retry_reason = BIO_RR_ACCEPT;
198			break;
199			case SSL_ERROR_WANT_CONNECT:
200			BIO_set_retry_special(b);
201			retry_reason = BIO_RR_CONNECT;
202			break;
203			case SSL_ERROR_SYSCALL:
204			case SSL_ERROR_SSL:
205			case SSL_ERROR_ZERO_RETURN:
206			default:
207			break;
208			}
209
210		6408	b->retry_reason = retry_reason;
211		6408	return (ret);
212		6408	}
213
214			static int
215			ssl_write(BIO b, const char out, int outl)
216			{
217			int ret, r = 0;
218			int retry_reason = 0;
219			SSL *ssl;
220			BIO_SSL *bs;
221
222	✗✓	12240	if (out == NULL)
223			return (0);
224		12240	bs = (BIO_SSL *)b->ptr;
225		12240	ssl = bs->ssl;
226
227		12240	BIO_clear_retry_flags(b);
228
229			/* ret=SSL_do_handshake(ssl);
230			if (ret > 0) */
231		12240	ret = SSL_write(ssl, out, outl);
232
233	✓✓✓✗ ✗✓	12240	switch (SSL_get_error(ssl, ret)) {
234			case SSL_ERROR_NONE:
235	✓✗	480	if (ret <= 0)
236			break;
237	✗✓	480	if (bs->renegotiate_count > 0) {
238			bs->byte_count += ret;
239			if (bs->byte_count > bs->renegotiate_count) {
240			bs->byte_count = 0;
241			bs->num_renegotiates++;
242			SSL_renegotiate(ssl);
243			r = 1;
244			}
245			}
246	✗✓	480	if ((bs->renegotiate_timeout > 0) && (!r)) {
247			time_t tm;
248
249			tm = time(NULL);
250			if (tm > bs->last_time + bs->renegotiate_timeout) {
251			bs->last_time = tm;
252			bs->num_renegotiates++;
253			SSL_renegotiate(ssl);
254			}
255			}
256			break;
257			case SSL_ERROR_WANT_WRITE:
258		1488	BIO_set_retry_write(b);
259		1488	break;
260			case SSL_ERROR_WANT_READ:
261		4152	BIO_set_retry_read(b);
262		4152	break;
263			case SSL_ERROR_WANT_X509_LOOKUP:
264			BIO_set_retry_special(b);
265			retry_reason = BIO_RR_SSL_X509_LOOKUP;
266			break;
267			case SSL_ERROR_WANT_CONNECT:
268			BIO_set_retry_special(b);
269			retry_reason = BIO_RR_CONNECT;
270			case SSL_ERROR_SYSCALL:
271			case SSL_ERROR_SSL:
272			default:
273			break;
274			}
275
276		6120	b->retry_reason = retry_reason;
277		6120	return (ret);
278		6120	}
279
280			static long
281			ssl_ctrl(BIO b, int cmd, long num, void ptr)
282			{
283			SSL *sslp, ssl;
284			BIO_SSL *bs;
285			BIO dbio, bio;
286			long ret = 1;
287
288		5568	bs = (BIO_SSL *)b->ptr;
289		2784	ssl = bs->ssl;
290	✗✓	2784	if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
291			return (0);
292	✗✗✗✗ ✗✗✓✗ ✗✗✗✓ ✗✗✗✗ ✗✗✗✗ ✗	2784	switch (cmd) {
293			case BIO_CTRL_RESET:
294			SSL_shutdown(ssl);
295
296			if (ssl->internal->handshake_func ==
297			ssl->method->internal->ssl_connect)
298			SSL_set_connect_state(ssl);
299			else if (ssl->internal->handshake_func ==
300			ssl->method->internal->ssl_accept)
301			SSL_set_accept_state(ssl);
302
303			SSL_clear(ssl);
304
305			if (b->next_bio != NULL)
306			ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
307			else if (ssl->rbio != NULL)
308			ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
309			else
310			ret = 1;
311			break;
312			case BIO_CTRL_INFO:
313			ret = 0;
314			break;
315			case BIO_C_SSL_MODE:
316			if (num) /* client mode */
317			SSL_set_connect_state(ssl);
318			else
319			SSL_set_accept_state(ssl);
320			break;
321			case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
322			ret = bs->renegotiate_timeout;
323			if (num < 60)
324			num = 5;
325			bs->renegotiate_timeout = (unsigned long)num;
326			bs->last_time = time(NULL);
327			break;
328			case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
329			ret = bs->renegotiate_count;
330			if ((long)num >=512)
331			bs->renegotiate_count = (unsigned long)num;
332			break;
333			case BIO_C_GET_SSL_NUM_RENEGOTIATES:
334			ret = bs->num_renegotiates;
335			break;
336			case BIO_C_SET_SSL:
337	✗✓	480	if (ssl != NULL) {
338			ssl_free(b);
339			if (!ssl_new(b))
340			return 0;
341			}
342		480	b->shutdown = (int)num;
343		480	ssl = (SSL *)ptr;
344		480	((BIO_SSL *)b->ptr)->ssl = ssl;
345		480	bio = SSL_get_rbio(ssl);
346	✓✗	480	if (bio != NULL) {
347	✗✓	480	if (b->next_bio != NULL)
348			BIO_push(bio, b->next_bio);
349		480	b->next_bio = bio;
350		480	CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO);
351		480	}
352		480	b->init = 1;
353		480	break;
354			case BIO_C_GET_SSL:
355			if (ptr != NULL) {
356			sslp = (SSL **)ptr;
357			*sslp = ssl;
358			} else
359			ret = 0;
360			break;
361			case BIO_CTRL_GET_CLOSE:
362			ret = b->shutdown;
363			break;
364			case BIO_CTRL_SET_CLOSE:
365			b->shutdown = (int)num;
366			break;
367			case BIO_CTRL_WPENDING:
368			ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
369			break;
370			case BIO_CTRL_PENDING:
371		2304	ret = SSL_pending(ssl);
372	✓✗	2304	if (ret == 0)
373		2304	ret = BIO_pending(ssl->rbio);
374			break;
375			case BIO_CTRL_FLUSH:
376			BIO_clear_retry_flags(b);
377			ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
378			BIO_copy_next_retry(b);
379			break;
380			case BIO_CTRL_PUSH:
381			if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio)) {
382			SSL_set_bio(ssl, b->next_bio, b->next_bio);
383			CRYPTO_add(&b->next_bio->references, 1,
384			CRYPTO_LOCK_BIO);
385			}
386			break;
387			case BIO_CTRL_POP:
388			/* Only detach if we are the BIO explicitly being popped */
389			if (b == ptr) {
390			/* Shouldn't happen in practice because the
391			* rbio and wbio are the same when pushed.
392			*/
393			if (ssl->rbio != ssl->wbio)
394			BIO_free_all(ssl->wbio);
395			if (b->next_bio != NULL)
396			CRYPTO_add(&b->next_bio->references, -1, CRYPTO_LOCK_BIO);
397			ssl->wbio = NULL;
398			ssl->rbio = NULL;
399			}
400			break;
401			case BIO_C_DO_STATE_MACHINE:
402			BIO_clear_retry_flags(b);
403
404			b->retry_reason = 0;
405			ret = (int)SSL_do_handshake(ssl);
406
407			switch (SSL_get_error(ssl, (int)ret)) {
408			case SSL_ERROR_WANT_READ:
409			BIO_set_flags(b,
410			BIO_FLAGS_READ\|BIO_FLAGS_SHOULD_RETRY);
411			break;
412			case SSL_ERROR_WANT_WRITE:
413			BIO_set_flags(b,
414			BIO_FLAGS_WRITE\|BIO_FLAGS_SHOULD_RETRY);
415			break;
416			case SSL_ERROR_WANT_CONNECT:
417			BIO_set_flags(b,
418			BIO_FLAGS_IO_SPECIAL\|BIO_FLAGS_SHOULD_RETRY);
419			b->retry_reason = b->next_bio->retry_reason;
420			break;
421			default:
422			break;
423			}
424			break;
425			case BIO_CTRL_DUP:
426			dbio = (BIO *)ptr;
427			if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
428			SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
429			((BIO_SSL *)dbio->ptr)->ssl = SSL_dup(ssl);
430			((BIO_SSL *)dbio->ptr)->renegotiate_count =
431			((BIO_SSL *)b->ptr)->renegotiate_count;
432			((BIO_SSL *)dbio->ptr)->byte_count =
433			((BIO_SSL *)b->ptr)->byte_count;
434			((BIO_SSL *)dbio->ptr)->renegotiate_timeout =
435			((BIO_SSL *)b->ptr)->renegotiate_timeout;
436			((BIO_SSL *)dbio->ptr)->last_time =
437			((BIO_SSL *)b->ptr)->last_time;
438			ret = (((BIO_SSL *)dbio->ptr)->ssl != NULL);
439			break;
440			case BIO_C_GET_FD:
441			ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
442			break;
443			case BIO_CTRL_SET_CALLBACK:
444			{
445			ret = 0;
446			}
447			break;
448			case BIO_CTRL_GET_CALLBACK:
449			{
450			void (*fptr)(const SSL xssl, int type, int val);
451
452			fptr = (void (*)(const SSL xssl, int type, int val))
453			ptr;
454			*fptr = SSL_get_info_callback(ssl);
455			}
456			break;
457			default:
458			ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
459			break;
460			}
461		2784	return (ret);
462		2784	}
463
464			static long
465			ssl_callback_ctrl(BIO b, int cmd, bio_info_cb fp)
466			{
467			SSL *ssl;
468			BIO_SSL *bs;
469			long ret = 1;
470
471			bs = (BIO_SSL *)b->ptr;
472			ssl = bs->ssl;
473			switch (cmd) {
474			case BIO_CTRL_SET_CALLBACK:
475			{
476			/* FIXME: setting this via a completely different prototype
477			seems like a crap idea */
478			SSL_set_info_callback(ssl,
479			(void ()(const SSL , int, int))fp);
480			}
481			break;
482			default:
483			ret = BIO_callback_ctrl(ssl->rbio, cmd, fp);
484			break;
485			}
486			return (ret);
487			}
488
489			static int
490			ssl_puts(BIO bp, const char str)
491			{
492			int n, ret;
493
494			n = strlen(str);
495			ret = BIO_write(bp, str, n);
496			return (ret);
497			}
498
499			BIO *
500			BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
501			{
502			BIO ret = NULL, buf = NULL, *ssl = NULL;
503
504			if ((buf = BIO_new(BIO_f_buffer())) == NULL)
505			goto err;
506			if ((ssl = BIO_new_ssl_connect(ctx)) == NULL)
507			goto err;
508			if ((ret = BIO_push(buf, ssl)) == NULL)
509			goto err;
510			return (ret);
511
512			err:
513			BIO_free(buf);
514			BIO_free(ssl);
515			return (NULL);
516			}
517
518			BIO *
519			BIO_new_ssl_connect(SSL_CTX *ctx)
520			{
521			BIO ret = NULL, con = NULL, *ssl = NULL;
522
523			if ((con = BIO_new(BIO_s_connect())) == NULL)
524			goto err;
525			if ((ssl = BIO_new_ssl(ctx, 1)) == NULL)
526			goto err;
527			if ((ret = BIO_push(ssl, con)) == NULL)
528			goto err;
529			return (ret);
530
531			err:
532			BIO_free(con);
533			BIO_free(ssl);
534			return (NULL);
535			}
536
537			BIO *
538			BIO_new_ssl(SSL_CTX *ctx, int client)
539			{
540			BIO *ret;
541			SSL *ssl;
542
543			if ((ret = BIO_new(BIO_f_ssl())) == NULL)
544			goto err;
545			if ((ssl = SSL_new(ctx)) == NULL)
546			goto err;
547
548			if (client)
549			SSL_set_connect_state(ssl);
550			else
551			SSL_set_accept_state(ssl);
552
553			BIO_set_ssl(ret, ssl, BIO_CLOSE);
554			return (ret);
555
556			err:
557			BIO_free(ret);
558			return (NULL);
559			}
560
561			int
562			BIO_ssl_copy_session_id(BIO t, BIO f)
563			{
564			t = BIO_find_type(t, BIO_TYPE_SSL);
565			f = BIO_find_type(f, BIO_TYPE_SSL);
566			if ((t == NULL) \|\| (f == NULL))
567			return (0);
568			if ((((BIO_SSL *)t->ptr)->ssl == NULL) \|\|
569			(((BIO_SSL *)f->ptr)->ssl == NULL))
570			return (0);
571			SSL_copy_session_id(((BIO_SSL )t->ptr)->ssl, ((BIO_SSL )f->ptr)->ssl);
572			return (1);
573			}
574
575			void
576			BIO_ssl_shutdown(BIO *b)
577			{
578			SSL *s;
579
580			while (b != NULL) {
581			if (b->method->type == BIO_TYPE_SSL) {
582			s = ((BIO_SSL *)b->ptr)->ssl;
583			SSL_shutdown(s);
584			break;
585			}
586			b = b->next_bio;
587			}
588			}