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diff --git a/src/lib/libcrypto/bio/bss_null.c b/src/lib/libcrypto/bio/bss_null.c
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1/* crypto/bio/bss_null.c */
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 <stdio.h>
60#include <errno.h>
61#include "cryptlib.h"
62#include "bio.h"
63
64#ifndef NOPROTO
65static int null_write(BIO *h,char *buf,int num);
66static int null_read(BIO *h,char *buf,int size);
67static int null_puts(BIO *h,char *str);
68static int null_gets(BIO *h,char *str,int size);
69static long null_ctrl(BIO *h,int cmd,long arg1,char *arg2);
70static int null_new(BIO *h);
71static int null_free(BIO *data);
72#else
73static int null_write();
74static int null_read();
75static int null_puts();
76static int null_gets();
77static long null_ctrl();
78static int null_new();
79static int null_free();
80#endif
81
82static BIO_METHOD null_method=
83 {
84 BIO_TYPE_NULL,
85 "NULL",
86 null_write,
87 null_read,
88 null_puts,
89 null_gets,
90 null_ctrl,
91 null_new,
92 null_free,
93 };
94
95BIO_METHOD *BIO_s_null()
96 {
97 return(&null_method);
98 }
99
100static int null_new(bi)
101BIO *bi;
102 {
103 bi->init=1;
104 bi->num=0;
105 bi->ptr=(NULL);
106 return(1);
107 }
108
109static int null_free(a)
110BIO *a;
111 {
112 if (a == NULL) return(0);
113 return(1);
114 }
115
116static int null_read(b,out,outl)
117BIO *b;
118char *out;
119int outl;
120 {
121 return(0);
122 }
123
124static int null_write(b,in,inl)
125BIO *b;
126char *in;
127int inl;
128 {
129 return(inl);
130 }
131
132static long null_ctrl(b,cmd,num,ptr)
133BIO *b;
134int cmd;
135long num;
136char *ptr;
137 {
138 long ret=1;
139
140 switch (cmd)
141 {
142 case BIO_CTRL_RESET:
143 case BIO_CTRL_EOF:
144 case BIO_CTRL_SET:
145 case BIO_CTRL_SET_CLOSE:
146 case BIO_CTRL_FLUSH:
147 case BIO_CTRL_DUP:
148 ret=1;
149 break;
150 case BIO_CTRL_GET_CLOSE:
151 case BIO_CTRL_INFO:
152 case BIO_CTRL_GET:
153 case BIO_CTRL_PENDING:
154 case BIO_CTRL_WPENDING:
155 default:
156 ret=0;
157 break;
158 }
159 return(ret);
160 }
161
162static int null_gets(bp,buf,size)
163BIO *bp;
164char *buf;
165int size;
166 {
167 return(0);
168 }
169
170static int null_puts(bp,str)
171BIO *bp;
172char *str;
173 {
174 if (str == NULL) return(0);
175 return(strlen(str));
176 }
177
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