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-rw-r--r--src/lib/libcrypto/bio/bf_null.c196
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diff --git a/src/lib/libcrypto/bio/bf_null.c b/src/lib/libcrypto/bio/bf_null.c
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index 09d54b6b21..0000000000
--- a/src/lib/libcrypto/bio/bf_null.c
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1/* $OpenBSD: bf_null.c,v 1.11 2014/07/11 08:44:47 jsing 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
62#include <openssl/bio.h>
63
64/* BIO_put and BIO_get both add to the digest,
65 * BIO_gets returns the digest */
66
67static int nullf_write(BIO *h, const char *buf, int num);
68static int nullf_read(BIO *h, char *buf, int size);
69static int nullf_puts(BIO *h, const char *str);
70static int nullf_gets(BIO *h, char *str, int size);
71static long nullf_ctrl(BIO *h, int cmd, long arg1, void *arg2);
72static int nullf_new(BIO *h);
73static int nullf_free(BIO *data);
74static long nullf_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
75
76static BIO_METHOD methods_nullf = {
77 .type = BIO_TYPE_NULL_FILTER,
78 .name = "NULL filter",
79 .bwrite = nullf_write,
80 .bread = nullf_read,
81 .bputs = nullf_puts,
82 .bgets = nullf_gets,
83 .ctrl = nullf_ctrl,
84 .create = nullf_new,
85 .destroy = nullf_free,
86 .callback_ctrl = nullf_callback_ctrl
87};
88
89BIO_METHOD *
90BIO_f_null(void)
91{
92 return (&methods_nullf);
93}
94
95static int
96nullf_new(BIO *bi)
97{
98 bi->init = 1;
99 bi->ptr = NULL;
100 bi->flags = 0;
101 return (1);
102}
103
104static int
105nullf_free(BIO *a)
106{
107 if (a == NULL)
108 return (0);
109/* a->ptr=NULL;
110 a->init=0;
111 a->flags=0;*/
112 return (1);
113}
114
115static int
116nullf_read(BIO *b, char *out, int outl)
117{
118 int ret = 0;
119
120 if (out == NULL)
121 return (0);
122 if (b->next_bio == NULL)
123 return (0);
124 ret = BIO_read(b->next_bio, out, outl);
125 BIO_clear_retry_flags(b);
126 BIO_copy_next_retry(b);
127 return (ret);
128}
129
130static int
131nullf_write(BIO *b, const char *in, int inl)
132{
133 int ret = 0;
134
135 if ((in == NULL) || (inl <= 0))
136 return (0);
137 if (b->next_bio == NULL)
138 return (0);
139 ret = BIO_write(b->next_bio, in, inl);
140 BIO_clear_retry_flags(b);
141 BIO_copy_next_retry(b);
142 return (ret);
143}
144
145static long
146nullf_ctrl(BIO *b, int cmd, long num, void *ptr)
147{
148 long ret;
149
150 if (b->next_bio == NULL)
151 return (0);
152 switch (cmd) {
153 case BIO_C_DO_STATE_MACHINE:
154 BIO_clear_retry_flags(b);
155 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
156 BIO_copy_next_retry(b);
157 break;
158 case BIO_CTRL_DUP:
159 ret = 0L;
160 break;
161 default:
162 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
163 }
164 return (ret);
165}
166
167static long
168nullf_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
169{
170 long ret = 1;
171
172 if (b->next_bio == NULL)
173 return (0);
174 switch (cmd) {
175 default:
176 ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
177 break;
178 }
179 return (ret);
180}
181
182static int
183nullf_gets(BIO *bp, char *buf, int size)
184{
185 if (bp->next_bio == NULL)
186 return (0);
187 return (BIO_gets(bp->next_bio, buf, size));
188}
189
190static int
191nullf_puts(BIO *bp, const char *str)
192{
193 if (bp->next_bio == NULL)
194 return (0);
195 return (BIO_puts(bp->next_bio, str));
196}
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