1/*
2 * Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <string.h>
11#include <openssl/bio.h>
12#include <openssl/pem.h>
13
14#include "testutil.h"
15#include "internal/nelem.h"
16
17typedef struct {
18    const char *raw;
19    const char *encoded;
20} TESTDATA;
21
22static TESTDATA b64_pem_data[] = {
23    { "hello world",
24      "aGVsbG8gd29ybGQ=" },
25    { "a very ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong input",
26      "YSB2ZXJ5IG9vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29vb29uZyBpbnB1dA==" }
27};
28
29static const char *pemtype = "PEMTESTDATA";
30
31static int test_b64(int idx)
32{
33    BIO *b = BIO_new(BIO_s_mem());
34    char *name = NULL, *header = NULL;
35    unsigned char *data = NULL;
36    long len;
37    int ret = 0;
38    const char *raw = b64_pem_data[idx].raw;
39    const char *encoded = b64_pem_data[idx].encoded;
40
41    if (!TEST_ptr(b)
42        || !TEST_true(BIO_printf(b, "-----BEGIN %s-----\n", pemtype))
43        || !TEST_true(BIO_printf(b, "%s\n", encoded))
44        || !TEST_true(BIO_printf(b, "-----END %s-----\n", pemtype))
45        || !TEST_true(PEM_read_bio_ex(b, &name, &header, &data, &len,
46                                      PEM_FLAG_ONLY_B64)))
47        goto err;
48    if (!TEST_int_eq(memcmp(pemtype, name, strlen(pemtype)), 0)
49        || !TEST_int_eq(len, strlen(raw))
50        || !TEST_int_eq(memcmp(data, raw, strlen(raw)), 0))
51        goto err;
52    ret = 1;
53 err:
54    BIO_free(b);
55    OPENSSL_free(name);
56    OPENSSL_free(header);
57    OPENSSL_free(data);
58    return ret;
59}
60
61static int test_invalid(void)
62{
63    BIO *b = BIO_new(BIO_s_mem());
64    char *name = NULL, *header = NULL;
65    unsigned char *data = NULL;
66    long len;
67    const char *encoded = b64_pem_data[0].encoded;
68
69    if (!TEST_ptr(b)
70        || !TEST_true(BIO_printf(b, "-----BEGIN %s-----\n", pemtype))
71        || !TEST_true(BIO_printf(b, "%c%s\n", '\t', encoded))
72        || !TEST_true(BIO_printf(b, "-----END %s-----\n", pemtype))
73        /* Expected to fail due to non-base64 character */
74        || TEST_true(PEM_read_bio_ex(b, &name, &header, &data, &len,
75                                     PEM_FLAG_ONLY_B64))) {
76        BIO_free(b);
77        return 0;
78    }
79    BIO_free(b);
80    OPENSSL_free(name);
81    OPENSSL_free(header);
82    OPENSSL_free(data);
83    return 1;
84}
85
86static int test_empty_payload(void)
87{
88    BIO *b;
89    static char *emptypay =
90        "-----BEGIN CERTIFICATE-----\n"
91        "-\n" /* Base64 EOF character */
92        "-----END CERTIFICATE-----";
93    char *name = NULL, *header = NULL;
94    unsigned char *data = NULL;
95    long len;
96    int ret = 0;
97
98    b = BIO_new_mem_buf(emptypay, strlen(emptypay));
99    if (!TEST_ptr(b))
100        return 0;
101
102    /* Expected to fail because the payload is empty */
103    if (!TEST_false(PEM_read_bio_ex(b, &name, &header, &data, &len, 0)))
104        goto err;
105
106    ret = 1;
107 err:
108    OPENSSL_free(name);
109    OPENSSL_free(header);
110    OPENSSL_free(data);
111    BIO_free(b);
112    return ret;
113}
114
115int setup_tests(void)
116{
117    ADD_ALL_TESTS(test_b64, OSSL_NELEM(b64_pem_data));
118    ADD_TEST(test_invalid);
119    ADD_TEST(test_empty_payload);
120    return 1;
121}
122