/*

 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#define OPENSSL_SUPPRESS_DEPRECATED

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include "bio_local.h"

#include "internal/cryptlib.h"

#include <openssl/err.h>

long BIO_debug_callback_ex(BIO *bio, int cmd, const char *argp, size_t len,

                           int argi, long argl, int ret, size_t *processed)

{

    BIO *b;

    char buf[256];

    char *p;

    int left;

    size_t l = 0;

    if (processed != NULL)

        l = *processed;

    left = BIO_snprintf(buf, sizeof(buf), "BIO[%p]: ", (void *)bio);

    /* Ignore errors and continue printing the other information. */

    if (left < 0)

        left = 0;

    p = buf + left;

    left = sizeof(buf) - left;

    switch (cmd) {

    case BIO_CB_FREE:

        BIO_snprintf(p, left, "Free - %s\n", bio->method->name);

        break;

    case BIO_CB_READ:

        if (bio->method->type & BIO_TYPE_DESCRIPTOR)

            BIO_snprintf(p, left, "read(%d,%zu) - %s fd=%d\n",

                         bio->num, len,

                         bio->method->name, bio->num);

        else

            BIO_snprintf(p, left, "read(%d,%zu) - %s\n",

                    bio->num, len, bio->method->name);

        break;

    case BIO_CB_WRITE:

        if (bio->method->type & BIO_TYPE_DESCRIPTOR)

            BIO_snprintf(p, left, "write(%d,%zu) - %s fd=%d\n",

                         bio->num, len,

                         bio->method->name, bio->num);

        else

            BIO_snprintf(p, left, "write(%d,%zu) - %s\n",

                         bio->num, len, bio->method->name);

        break;

    case BIO_CB_PUTS:

        BIO_snprintf(p, left, "puts() - %s\n", bio->method->name);

        break;

    case BIO_CB_GETS:

        BIO_snprintf(p, left, "gets(%zu) - %s\n", len,

                     bio->method->name);

        break;

    case BIO_CB_CTRL:

        BIO_snprintf(p, left, "ctrl(%d) - %s\n", argi,

                     bio->method->name);

        break;

    case BIO_CB_RETURN | BIO_CB_READ:

        BIO_snprintf(p, left, "read return %d processed: %zu\n", ret, l);

        break;

    case BIO_CB_RETURN | BIO_CB_WRITE:

        BIO_snprintf(p, left, "write return %d processed: %zu\n", ret, l);

        break;

    case BIO_CB_RETURN | BIO_CB_GETS:

        BIO_snprintf(p, left, "gets return %d processed: %zu\n", ret, l);

        break;

    case BIO_CB_RETURN | BIO_CB_PUTS:

        BIO_snprintf(p, left, "puts return %d processed: %zu\n", ret, l);

        break;

    case BIO_CB_RETURN | BIO_CB_CTRL:

        BIO_snprintf(p, left, "ctrl return %d\n", ret);

        break;

    default:

        BIO_snprintf(p, left, "bio callback - unknown type (%d)\n", cmd);

        break;

    }

    b = (BIO *)bio->cb_arg;

    if (b != NULL)

        BIO_write(b, buf, strlen(buf));

#if !defined(OPENSSL_NO_STDIO)

    else

        fputs(buf, stderr);

#endif

    return ret;

}

#ifndef OPENSSL_NO_DEPRECATED_3_0

long BIO_debug_callback(BIO *bio, int cmd, const char *argp,

                        int argi, long argl, long ret)

{

    size_t processed = 0;

    if (ret > 0)

        processed = (size_t)ret;

    BIO_debug_callback_ex(bio, cmd, argp, (size_t)argi,

                          argi, argl, ret > 0 ? 1 : (int)ret, &processed);

    return ret;

}

#endif