/*

 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (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

 */

#include <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/crypto.h>

#include <openssl/buffer.h>

#include <openssl/err.h>

void ERR_print_errors_cb(int (*cb) (const char *str, size_t len, void *u),

                         void *u)

{

    unsigned long l;

    char buf[256];

    char buf2[4096];

    const char *file, *data;

    int line, flags;

    /*

     * We don't know what kind of thing CRYPTO_THREAD_ID is. Here is our best

     * attempt to convert it into something we can print.

     */

    union {

        CRYPTO_THREAD_ID tid;

        unsigned long ltid;

    } tid;

    tid.ltid = 0;

    tid.tid = CRYPTO_THREAD_get_current_id();

    while ((l = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0) {

        ERR_error_string_n(l, buf, sizeof(buf));

        BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", tid.ltid, buf,

                     file, line, (flags & ERR_TXT_STRING) ? data : "");

        if (cb(buf2, strlen(buf2), u) <= 0)

            break;              /* abort outputting the error report */

    }

}

static int print_bio(const char *str, size_t len, void *bp)

{

    return BIO_write((BIO *)bp, str, len);

}

void ERR_print_errors(BIO *bp)

{

    ERR_print_errors_cb(print_bio, bp);

}

#ifndef OPENSSL_NO_STDIO

void ERR_print_errors_fp(FILE *fp)

{

    BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);

    if (bio == NULL)

        return;

    ERR_print_errors_cb(print_bio, bio);

    BIO_free(bio);

}

#endif