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1 /* crypto/bio/bio_cb.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 <string.h>
61 #include <stdlib.h>
62 #include "cryptlib.h"
63 #include <openssl/bio.h>
64 #include <openssl/err.h>
65 
BIO_debug_callback(BIO * bio,int cmd,const char * argp,int argi,long argl,long ret)66 long MS_CALLBACK BIO_debug_callback(BIO *bio, int cmd, const char *argp,
67 	     int argi, long argl, long ret)
68 	{
69 	BIO *b;
70 	MS_STATIC char buf[256];
71 	char *p;
72 	long r=1;
73 	size_t p_maxlen;
74 
75 	if (BIO_CB_RETURN & cmd)
76 		r=ret;
77 
78 	BIO_snprintf(buf,sizeof buf,"BIO[%08lX]:",(unsigned long)bio);
79 	p= &(buf[14]);
80 	p_maxlen = sizeof buf - 14;
81 	switch (cmd)
82 		{
83 	case BIO_CB_FREE:
84 		BIO_snprintf(p,p_maxlen,"Free - %s\n",bio->method->name);
85 		break;
86 	case BIO_CB_READ:
87 		if (bio->method->type & BIO_TYPE_DESCRIPTOR)
88 			BIO_snprintf(p,p_maxlen,"read(%d,%lu) - %s fd=%d\n",
89 				 bio->num,(unsigned long)argi,
90 				 bio->method->name,bio->num);
91 		else
92 			BIO_snprintf(p,p_maxlen,"read(%d,%lu) - %s\n",
93 				 bio->num,(unsigned long)argi,
94 				 bio->method->name);
95 		break;
96 	case BIO_CB_WRITE:
97 		if (bio->method->type & BIO_TYPE_DESCRIPTOR)
98 			BIO_snprintf(p,p_maxlen,"write(%d,%lu) - %s fd=%d\n",
99 				 bio->num,(unsigned long)argi,
100 				 bio->method->name,bio->num);
101 		else
102 			BIO_snprintf(p,p_maxlen,"write(%d,%lu) - %s\n",
103 				 bio->num,(unsigned long)argi,
104 				 bio->method->name);
105 		break;
106 	case BIO_CB_PUTS:
107 		BIO_snprintf(p,p_maxlen,"puts() - %s\n",bio->method->name);
108 		break;
109 	case BIO_CB_GETS:
110 		BIO_snprintf(p,p_maxlen,"gets(%lu) - %s\n",(unsigned long)argi,bio->method->name);
111 		break;
112 	case BIO_CB_CTRL:
113 		BIO_snprintf(p,p_maxlen,"ctrl(%lu) - %s\n",(unsigned long)argi,bio->method->name);
114 		break;
115 	case BIO_CB_RETURN|BIO_CB_READ:
116 		BIO_snprintf(p,p_maxlen,"read return %ld\n",ret);
117 		break;
118 	case BIO_CB_RETURN|BIO_CB_WRITE:
119 		BIO_snprintf(p,p_maxlen,"write return %ld\n",ret);
120 		break;
121 	case BIO_CB_RETURN|BIO_CB_GETS:
122 		BIO_snprintf(p,p_maxlen,"gets return %ld\n",ret);
123 		break;
124 	case BIO_CB_RETURN|BIO_CB_PUTS:
125 		BIO_snprintf(p,p_maxlen,"puts return %ld\n",ret);
126 		break;
127 	case BIO_CB_RETURN|BIO_CB_CTRL:
128 		BIO_snprintf(p,p_maxlen,"ctrl return %ld\n",ret);
129 		break;
130 	default:
131 		BIO_snprintf(p,p_maxlen,"bio callback - unknown type (%d)\n",cmd);
132 		break;
133 		}
134 
135 	b=(BIO *)bio->cb_arg;
136 	if (b != NULL)
137 		BIO_write(b,buf,strlen(buf));
138 #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
139 	else
140 		fputs(buf,stderr);
141 #endif
142 	return(r);
143 	}
144