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82f518acee
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
156 lines
4.1 KiB
C
156 lines
4.1 KiB
C
/*
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* Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include "tu_local.h"
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static int tap_write_ex(BIO *b, const char *buf, size_t size, size_t *in_size);
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static int tap_read_ex(BIO *b, char *buf, size_t size, size_t *out_size);
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static int tap_puts(BIO *b, const char *str);
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static int tap_gets(BIO *b, char *str, int size);
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static long tap_ctrl(BIO *b, int cmd, long arg1, void *arg2);
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static int tap_new(BIO *b);
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static int tap_free(BIO *b);
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static long tap_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
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const BIO_METHOD *BIO_f_tap(void)
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{
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static BIO_METHOD *tap = NULL;
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if (tap == NULL) {
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tap = BIO_meth_new(BIO_TYPE_START | BIO_TYPE_FILTER, "tap");
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if (tap != NULL) {
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BIO_meth_set_write_ex(tap, tap_write_ex);
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BIO_meth_set_read_ex(tap, tap_read_ex);
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BIO_meth_set_puts(tap, tap_puts);
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BIO_meth_set_gets(tap, tap_gets);
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BIO_meth_set_ctrl(tap, tap_ctrl);
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BIO_meth_set_create(tap, tap_new);
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BIO_meth_set_destroy(tap, tap_free);
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BIO_meth_set_callback_ctrl(tap, tap_callback_ctrl);
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}
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}
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return tap;
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}
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static int tap_new(BIO *b)
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{
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BIO_set_data(b, NULL);
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BIO_set_init(b, 1);
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return 1;
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}
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static int tap_free(BIO *b)
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{
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if (b == NULL)
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return 0;
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BIO_set_data(b, NULL);
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BIO_set_init(b, 0);
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return 1;
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}
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static int tap_read_ex(BIO *b, char *buf, size_t size, size_t *out_size)
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{
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BIO *next = BIO_next(b);
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int ret = 0;
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ret = BIO_read_ex(next, buf, size, out_size);
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BIO_clear_retry_flags(b);
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BIO_copy_next_retry(b);
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return ret;
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}
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/*
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* Output a string to the specified bio and return 1 if successful.
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*/
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static int write_string(BIO *b, const char *buf, size_t n)
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{
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size_t m;
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return BIO_write_ex(b, buf, n, &m) != 0 && m == n;
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}
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/*
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* Write some data.
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*
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* This function implements a simple state machine that detects new lines.
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* It indents the output and prefixes it with a '#' character.
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*
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* It returns the number of input characters that were output in in_size.
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* More characters than this will likely have been output however any calling
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* code will be unable to correctly assess the actual number of characters
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* emitted and would be prone to failure if the actual number were returned.
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*
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* The BIO_data field is used as our state. If it is NULL, we've just
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* seen a new line. If it is not NULL, we're processing characters in a line.
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*/
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static int tap_write_ex(BIO *b, const char *buf, size_t size, size_t *in_size)
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{
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static char empty[] = "";
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BIO *next = BIO_next(b);
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size_t i;
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int j;
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for (i = 0; i < size; i++) {
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if (BIO_get_data(b) == NULL) {
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BIO_set_data(b, empty);
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for (j = 0; j < subtest_level(); j++)
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if (!write_string(next, " ", 1))
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goto err;
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if (!write_string(next, "# ", 2))
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goto err;
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}
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if (!write_string(next, buf + i, 1))
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goto err;
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if (buf[i] == '\n')
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BIO_set_data(b, NULL);
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}
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*in_size = i;
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return 1;
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err:
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*in_size = i;
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return 0;
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}
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static long tap_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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BIO *next = BIO_next(b);
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switch (cmd) {
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case BIO_CTRL_RESET:
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BIO_set_data(b, NULL);
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break;
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default:
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break;
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}
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return BIO_ctrl(next, cmd, num, ptr);
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}
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static long tap_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
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{
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return BIO_callback_ctrl(BIO_next(b), cmd, fp);
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}
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static int tap_gets(BIO *b, char *buf, int size)
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{
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return BIO_gets(BIO_next(b), buf, size);
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}
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static int tap_puts(BIO *b, const char *str)
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{
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size_t m;
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if (!tap_write_ex(b, str, strlen(str), &m))
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return 0;
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return m;
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}
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