[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <string.h>
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| 12 | #include <stdlib.h>
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| 13 | #include "bio_lcl.h"
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| 14 | #include "internal/cryptlib.h"
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| 15 | #include <openssl/err.h>
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| 16 |
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| 17 | long BIO_debug_callback(BIO *bio, int cmd, const char *argp,
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| 18 | int argi, long argl, long ret)
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| 19 | {
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| 20 | BIO *b;
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| 21 | char buf[256];
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| 22 | char *p;
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| 23 | long r = 1;
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| 24 | int len;
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| 25 | size_t p_maxlen;
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| 26 |
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| 27 | if (BIO_CB_RETURN & cmd)
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| 28 | r = ret;
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| 29 |
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| 30 | len = BIO_snprintf(buf, sizeof buf, "BIO[%p]: ", (void *)bio);
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| 31 |
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| 32 | /* Ignore errors and continue printing the other information. */
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| 33 | if (len < 0)
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| 34 | len = 0;
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| 35 | p = buf + len;
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| 36 | p_maxlen = sizeof(buf) - len;
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| 37 |
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| 38 | switch (cmd) {
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| 39 | case BIO_CB_FREE:
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| 40 | BIO_snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);
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| 41 | break;
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| 42 | case BIO_CB_READ:
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| 43 | if (bio->method->type & BIO_TYPE_DESCRIPTOR)
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| 44 | BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s fd=%d\n",
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| 45 | bio->num, (unsigned long)argi,
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| 46 | bio->method->name, bio->num);
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| 47 | else
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| 48 | BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s\n",
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| 49 | bio->num, (unsigned long)argi, bio->method->name);
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| 50 | break;
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| 51 | case BIO_CB_WRITE:
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| 52 | if (bio->method->type & BIO_TYPE_DESCRIPTOR)
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| 53 | BIO_snprintf(p, p_maxlen, "write(%d,%lu) - %s fd=%d\n",
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| 54 | bio->num, (unsigned long)argi,
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| 55 | bio->method->name, bio->num);
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| 56 | else
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| 57 | BIO_snprintf(p, p_maxlen, "write(%d,%lu) - %s\n",
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| 58 | bio->num, (unsigned long)argi, bio->method->name);
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| 59 | break;
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| 60 | case BIO_CB_PUTS:
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| 61 | BIO_snprintf(p, p_maxlen, "puts() - %s\n", bio->method->name);
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| 62 | break;
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| 63 | case BIO_CB_GETS:
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| 64 | BIO_snprintf(p, p_maxlen, "gets(%lu) - %s\n", (unsigned long)argi,
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| 65 | bio->method->name);
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| 66 | break;
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| 67 | case BIO_CB_CTRL:
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| 68 | BIO_snprintf(p, p_maxlen, "ctrl(%lu) - %s\n", (unsigned long)argi,
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| 69 | bio->method->name);
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| 70 | break;
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| 71 | case BIO_CB_RETURN | BIO_CB_READ:
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| 72 | BIO_snprintf(p, p_maxlen, "read return %ld\n", ret);
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| 73 | break;
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| 74 | case BIO_CB_RETURN | BIO_CB_WRITE:
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| 75 | BIO_snprintf(p, p_maxlen, "write return %ld\n", ret);
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| 76 | break;
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| 77 | case BIO_CB_RETURN | BIO_CB_GETS:
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| 78 | BIO_snprintf(p, p_maxlen, "gets return %ld\n", ret);
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| 79 | break;
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| 80 | case BIO_CB_RETURN | BIO_CB_PUTS:
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| 81 | BIO_snprintf(p, p_maxlen, "puts return %ld\n", ret);
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| 82 | break;
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| 83 | case BIO_CB_RETURN | BIO_CB_CTRL:
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| 84 | BIO_snprintf(p, p_maxlen, "ctrl return %ld\n", ret);
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| 85 | break;
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| 86 | default:
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| 87 | BIO_snprintf(p, p_maxlen, "bio callback - unknown type (%d)\n", cmd);
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| 88 | break;
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| 89 | }
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| 90 |
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| 91 | b = (BIO *)bio->cb_arg;
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| 92 | if (b != NULL)
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| 93 | BIO_write(b, buf, strlen(buf));
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| 94 | #if !defined(OPENSSL_NO_STDIO)
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| 95 | else
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| 96 | fputs(buf, stderr);
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| 97 | #endif
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| 98 | return (r);
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| 99 | }
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