1 /* $OpenBSD: bio_cb.c,v 1.18 2022/01/07 09:02:17 tb 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 <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 63 #include <openssl/err.h> 64 #include <openssl/bio.h> 65 66 #include "bio_local.h" 67 68 long 69 BIO_debug_callback(BIO *bio, int cmd, const char *argp, int argi, long argl, 70 long ret) 71 { 72 BIO *b; 73 char buf[256]; 74 char *p; 75 int nbuf; 76 long r = 1; 77 size_t p_maxlen; 78 79 if (BIO_CB_RETURN & cmd) 80 r = ret; 81 82 nbuf = snprintf(buf, sizeof(buf), "BIO[%p]: ", bio); 83 if (nbuf < 0) 84 nbuf = 0; /* Ignore error; continue printing. */ 85 if (nbuf >= sizeof(buf)) 86 goto out; 87 88 p = buf + nbuf; 89 p_maxlen = sizeof(buf) - nbuf; 90 91 switch (cmd) { 92 case BIO_CB_FREE: 93 snprintf(p, p_maxlen, "Free - %s\n", bio->method->name); 94 break; 95 case BIO_CB_READ: 96 if (bio->method->type & BIO_TYPE_DESCRIPTOR) 97 snprintf(p, p_maxlen, 98 "read(%d,%lu) - %s fd=%d\n", 99 bio->num, (unsigned long)argi, 100 bio->method->name, bio->num); 101 else 102 snprintf(p, p_maxlen, "read(%d,%lu) - %s\n", 103 bio->num, (unsigned long)argi, bio->method->name); 104 break; 105 case BIO_CB_WRITE: 106 if (bio->method->type & BIO_TYPE_DESCRIPTOR) 107 snprintf(p, p_maxlen, 108 "write(%d,%lu) - %s fd=%d\n", 109 bio->num, (unsigned long)argi, 110 bio->method->name, bio->num); 111 else 112 snprintf(p, p_maxlen, "write(%d,%lu) - %s\n", 113 bio->num, (unsigned long)argi, bio->method->name); 114 break; 115 case BIO_CB_PUTS: 116 snprintf(p, p_maxlen, 117 "puts() - %s\n", bio->method->name); 118 break; 119 case BIO_CB_GETS: 120 snprintf(p, p_maxlen, "gets(%lu) - %s\n", 121 (unsigned long)argi, bio->method->name); 122 break; 123 case BIO_CB_CTRL: 124 snprintf(p, p_maxlen, "ctrl(%lu) - %s\n", 125 (unsigned long)argi, bio->method->name); 126 break; 127 case BIO_CB_RETURN|BIO_CB_READ: 128 snprintf(p, p_maxlen, "read return %ld\n", ret); 129 break; 130 case BIO_CB_RETURN|BIO_CB_WRITE: 131 snprintf(p, p_maxlen, "write return %ld\n", ret); 132 break; 133 case BIO_CB_RETURN|BIO_CB_GETS: 134 snprintf(p, p_maxlen, "gets return %ld\n", ret); 135 break; 136 case BIO_CB_RETURN|BIO_CB_PUTS: 137 snprintf(p, p_maxlen, "puts return %ld\n", ret); 138 break; 139 case BIO_CB_RETURN|BIO_CB_CTRL: 140 snprintf(p, p_maxlen, "ctrl return %ld\n", ret); 141 break; 142 default: 143 snprintf(p, p_maxlen, 144 "bio callback - unknown type (%d)\n", cmd); 145 break; 146 } 147 148 out: 149 b = (BIO *)bio->cb_arg; 150 if (b != NULL) 151 BIO_write(b, buf, strlen(buf)); 152 else 153 fputs(buf, stderr); 154 return (r); 155 } 156