mirror of https://github.com/openssl/openssl.git
132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/*
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* Copyright 2021-2025 The OpenSSL Project Authors. 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 <openssl/bio.h>
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#include "testutil.h"
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static const char *filename = NULL;
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/*
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* Test that a BIO_f_readbuffer() with a BIO_new_file() behaves nicely if
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* BIO_gets() and BIO_read_ex() are both called.
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* Since the BIO_gets() calls buffer the reads, the BIO_read_ex() should
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* still be able to read the buffered data if we seek back to the start.
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*
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* The following cases are tested using tstid:
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* 0 : Just use BIO_read_ex().
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* 1 : Try a few reads using BIO_gets() before using BIO_read_ex()
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* 2 : Read the entire file using BIO_gets() before using BIO_read_ex().
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*/
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static int test_readbuffer_file_bio(int tstid)
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{
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int ret = 0, len, partial;
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BIO *in = NULL, *in_bio = NULL, *readbuf_bio = NULL;
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char buf[255];
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char expected[4096];
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size_t readbytes = 0, bytes = 0, count = 0;
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/* Open a file BIO and read all the data */
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if (!TEST_ptr(in = BIO_new_file(filename, "r"))
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|| !TEST_int_eq(BIO_read_ex(in, expected, sizeof(expected),
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&readbytes), 1)
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|| !TEST_size_t_lt(readbytes, sizeof(expected)))
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goto err;
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BIO_free(in);
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in = NULL;
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/* Create a new file bio that sits under a readbuffer BIO */
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if (!TEST_ptr(readbuf_bio = BIO_new(BIO_f_readbuffer()))
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|| !TEST_ptr(in_bio = BIO_new_file(filename, "r")))
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goto err;
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in_bio = BIO_push(readbuf_bio, in_bio);
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readbuf_bio = NULL;
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if (!TEST_int_eq(BIO_tell(in_bio), 0))
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goto err;
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if (tstid != 0) {
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partial = 4;
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while (!BIO_eof(in_bio)) {
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len = BIO_gets(in_bio, buf, sizeof(buf));
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if (len == 0) {
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if (!TEST_true(BIO_eof(in_bio)))
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goto err;
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} else {
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if (!TEST_int_gt(len, 0)
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|| !TEST_int_le(len, (int)sizeof(buf) - 1))
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goto err;
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if (!TEST_true(buf[len] == 0))
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goto err;
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if (len > 1
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&& !BIO_eof(in_bio)
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&& len != ((int)sizeof(buf) - 1)
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&& !TEST_true(buf[len - 1] == '\n'))
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goto err;
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}
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if (tstid == 1 && --partial == 0)
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break;
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}
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}
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if (!TEST_int_eq(BIO_seek(in_bio, 0), 1))
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goto err;
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len = 8; /* Do a small partial read to start with */
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while (!BIO_eof(in_bio)) {
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if (!TEST_int_eq(BIO_read_ex(in_bio, buf, len, &bytes), 1))
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break;
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if (!TEST_mem_eq(buf, bytes, expected + count, bytes))
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goto err;
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count += bytes;
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len = sizeof(buf); /* fill the buffer on subsequent reads */
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}
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if (!TEST_size_t_eq(count, readbytes))
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goto err;
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ret = 1;
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err:
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BIO_free(in);
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BIO_free_all(in_bio);
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BIO_free(readbuf_bio);
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return ret;
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}
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typedef enum OPTION_choice {
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OPT_ERR = -1,
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OPT_EOF = 0,
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OPT_TEST_ENUM
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} OPTION_CHOICE;
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const OPTIONS *test_get_options(void)
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{
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static const OPTIONS test_options[] = {
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OPT_TEST_OPTIONS_WITH_EXTRA_USAGE("file\n"),
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{ OPT_HELP_STR, 1, '-', "file\tFile to run tests on.\n" },
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{ NULL }
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};
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return test_options;
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}
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int setup_tests(void)
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{
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OPTION_CHOICE o;
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_TEST_CASES:
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break;
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default:
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return 0;
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}
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}
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filename = test_get_argument(0);
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ADD_ALL_TESTS(test_readbuffer_file_bio, 3);
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return 1;
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}
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