| 1 | /*
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| 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (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 | #define OPENSSL_SUPPRESS_DEPRECATED
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| 11 |
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| 12 | #include <stdio.h>
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| 13 | #include <string.h>
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| 14 | #include <stdlib.h>
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| 15 | #include "bio_local.h"
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| 16 | #include "internal/cryptlib.h"
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| 17 | #include <openssl/err.h>
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| 18 |
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| 19 | long BIO_debug_callback_ex(BIO *bio, int cmd, const char *argp, size_t len,
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| 20 | int argi, long argl, int ret, size_t *processed)
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| 21 | {
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| 22 | BIO *b;
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| 23 | char buf[256];
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| 24 | char *p;
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| 25 | int left;
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| 26 | size_t l = 0;
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| 27 |
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| 28 | if (processed != NULL)
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| 29 | l = *processed;
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| 30 |
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| 31 | left = BIO_snprintf(buf, sizeof(buf), "BIO[%p]: ", (void *)bio);
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| 32 |
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| 33 | /* Ignore errors and continue printing the other information. */
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| 34 | if (left < 0)
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| 35 | left = 0;
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| 36 | p = buf + left;
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| 37 | left = sizeof(buf) - left;
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| 38 |
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| 39 | switch (cmd) {
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| 40 | case BIO_CB_FREE:
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| 41 | BIO_snprintf(p, left, "Free - %s\n", bio->method->name);
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| 42 | break;
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| 43 | case BIO_CB_READ:
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| 44 | if (bio->method->type & BIO_TYPE_DESCRIPTOR)
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| 45 | BIO_snprintf(p, left, "read(%d,%zu) - %s fd=%d\n",
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| 46 | bio->num, len,
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| 47 | bio->method->name, bio->num);
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| 48 | else
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| 49 | BIO_snprintf(p, left, "read(%d,%zu) - %s\n",
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| 50 | bio->num, len, bio->method->name);
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| 51 | break;
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| 52 | case BIO_CB_WRITE:
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| 53 | if (bio->method->type & BIO_TYPE_DESCRIPTOR)
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| 54 | BIO_snprintf(p, left, "write(%d,%zu) - %s fd=%d\n",
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| 55 | bio->num, len,
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| 56 | bio->method->name, bio->num);
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| 57 | else
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| 58 | BIO_snprintf(p, left, "write(%d,%zu) - %s\n",
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| 59 | bio->num, len, bio->method->name);
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| 60 | break;
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| 61 | case BIO_CB_PUTS:
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| 62 | BIO_snprintf(p, left, "puts() - %s\n", bio->method->name);
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| 63 | break;
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| 64 | case BIO_CB_GETS:
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| 65 | BIO_snprintf(p, left, "gets(%zu) - %s\n", len,
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| 66 | bio->method->name);
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| 67 | break;
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| 68 | case BIO_CB_CTRL:
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| 69 | BIO_snprintf(p, left, "ctrl(%d) - %s\n", argi,
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| 70 | bio->method->name);
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| 71 | break;
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| 72 | case BIO_CB_RETURN | BIO_CB_READ:
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| 73 | BIO_snprintf(p, left, "read return %d processed: %zu\n", ret, l);
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| 74 | break;
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| 75 | case BIO_CB_RETURN | BIO_CB_WRITE:
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| 76 | BIO_snprintf(p, left, "write return %d processed: %zu\n", ret, l);
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| 77 | break;
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| 78 | case BIO_CB_RETURN | BIO_CB_GETS:
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| 79 | BIO_snprintf(p, left, "gets return %d processed: %zu\n", ret, l);
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| 80 | break;
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| 81 | case BIO_CB_RETURN | BIO_CB_PUTS:
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| 82 | BIO_snprintf(p, left, "puts return %d processed: %zu\n", ret, l);
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| 83 | break;
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| 84 | case BIO_CB_RETURN | BIO_CB_CTRL:
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| 85 | BIO_snprintf(p, left, "ctrl return %d\n", ret);
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| 86 | break;
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| 87 | default:
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| 88 | BIO_snprintf(p, left, "bio callback - unknown type (%d)\n", cmd);
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| 89 | break;
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| 90 | }
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| 91 |
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| 92 | b = (BIO *)bio->cb_arg;
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| 93 | if (b != NULL)
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| 94 | BIO_write(b, buf, strlen(buf));
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| 95 | #if !defined(OPENSSL_NO_STDIO)
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| 96 | else
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| 97 | fputs(buf, stderr);
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| 98 | #endif
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| 99 | return ret;
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| 100 | }
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| 101 |
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| 102 | #ifndef OPENSSL_NO_DEPRECATED_3_0
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| 103 | long BIO_debug_callback(BIO *bio, int cmd, const char *argp,
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| 104 | int argi, long argl, long ret)
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| 105 | {
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| 106 | size_t processed = 0;
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| 107 |
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| 108 | if (ret > 0)
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| 109 | processed = (size_t)ret;
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| 110 | BIO_debug_callback_ex(bio, cmd, argp, (size_t)argi,
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| 111 | argi, argl, ret > 0 ? 1 : (int)ret, &processed);
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| 112 | return ret;
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| 113 | }
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| 114 | #endif
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