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d02b48c6 | 1 | /* crypto/bio/bss_null.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
40720ce3 | 8 | * |
d02b48c6 RE |
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). | |
40720ce3 | 15 | * |
d02b48c6 RE |
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. | |
40720ce3 | 22 | * |
d02b48c6 RE |
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 :-). | |
40720ce3 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40720ce3 | 40 | * |
d02b48c6 RE |
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. | |
40720ce3 | 52 | * |
d02b48c6 RE |
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" | |
ec577822 | 62 | #include <openssl/bio.h> |
d02b48c6 | 63 | |
0e1c0612 UM |
64 | static int null_write(BIO *h, const char *buf, int num); |
65 | static int null_read(BIO *h, char *buf, int size); | |
66 | static int null_puts(BIO *h, const char *str); | |
67 | static int null_gets(BIO *h, char *str, int size); | |
68 | static long null_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
d02b48c6 RE |
69 | static int null_new(BIO *h); |
70 | static int null_free(BIO *data); | |
40720ce3 MC |
71 | static BIO_METHOD null_method = { |
72 | BIO_TYPE_NULL, | |
73 | "NULL", | |
74 | null_write, | |
75 | null_read, | |
76 | null_puts, | |
77 | null_gets, | |
78 | null_ctrl, | |
79 | null_new, | |
80 | null_free, | |
81 | NULL, | |
82 | }; | |
d02b48c6 | 83 | |
6b691a5c | 84 | BIO_METHOD *BIO_s_null(void) |
40720ce3 MC |
85 | { |
86 | return (&null_method); | |
87 | } | |
d02b48c6 | 88 | |
6b691a5c | 89 | static int null_new(BIO *bi) |
40720ce3 MC |
90 | { |
91 | bi->init = 1; | |
92 | bi->num = 0; | |
93 | bi->ptr = (NULL); | |
94 | return (1); | |
95 | } | |
d02b48c6 | 96 | |
6b691a5c | 97 | static int null_free(BIO *a) |
40720ce3 MC |
98 | { |
99 | if (a == NULL) | |
100 | return (0); | |
101 | return (1); | |
102 | } | |
103 | ||
6b691a5c | 104 | static int null_read(BIO *b, char *out, int outl) |
40720ce3 MC |
105 | { |
106 | return (0); | |
107 | } | |
d02b48c6 | 108 | |
0e1c0612 | 109 | static int null_write(BIO *b, const char *in, int inl) |
40720ce3 MC |
110 | { |
111 | return (inl); | |
112 | } | |
d02b48c6 | 113 | |
0e1c0612 | 114 | static long null_ctrl(BIO *b, int cmd, long num, void *ptr) |
40720ce3 MC |
115 | { |
116 | long ret = 1; | |
d02b48c6 | 117 | |
40720ce3 MC |
118 | switch (cmd) { |
119 | case BIO_CTRL_RESET: | |
120 | case BIO_CTRL_EOF: | |
121 | case BIO_CTRL_SET: | |
122 | case BIO_CTRL_SET_CLOSE: | |
123 | case BIO_CTRL_FLUSH: | |
124 | case BIO_CTRL_DUP: | |
125 | ret = 1; | |
126 | break; | |
127 | case BIO_CTRL_GET_CLOSE: | |
128 | case BIO_CTRL_INFO: | |
129 | case BIO_CTRL_GET: | |
130 | case BIO_CTRL_PENDING: | |
131 | case BIO_CTRL_WPENDING: | |
132 | default: | |
133 | ret = 0; | |
134 | break; | |
135 | } | |
136 | return (ret); | |
137 | } | |
d02b48c6 | 138 | |
6b691a5c | 139 | static int null_gets(BIO *bp, char *buf, int size) |
40720ce3 MC |
140 | { |
141 | return (0); | |
142 | } | |
d02b48c6 | 143 | |
0e1c0612 | 144 | static int null_puts(BIO *bp, const char *str) |
40720ce3 MC |
145 | { |
146 | if (str == NULL) | |
147 | return (0); | |
148 | return (strlen(str)); | |
149 | } |