1/*	$OpenBSD: ct_prn.c,v 1.7 2023/07/08 07:22:58 beck Exp $ */
2/*
3 * Written by Rob Stradling (rob@comodo.com) and Stephen Henson
4 * (steve@openssl.org) for the OpenSSL project 2014.
5 */
6/* ====================================================================
7 * Copyright (c) 2014 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#ifdef OPENSSL_NO_CT
61# error "CT is disabled"
62#endif
63
64#include <openssl/asn1.h>
65#include <openssl/bio.h>
66
67#include "ct_local.h"
68
69/*
70 * XXX public api in OpenSSL 1.1.0  but this is the only thing that uses it.
71 * so I am stuffing it here for the moment.
72 */
73static int
74BIO_hex_string(BIO *out, int indent, int width, unsigned char *data,
75    int datalen)
76{
77	int i, j = 0;
78
79	if (datalen < 1)
80		return 1;
81
82	for (i = 0; i < datalen - 1; i++) {
83		if (i && !j)
84			BIO_printf(out, "%*s", indent, "");
85
86		BIO_printf(out, "%02X:", data[i]);
87
88		j = (j + 1) % width;
89		if (!j)
90			BIO_printf(out, "\n");
91	}
92
93	if (i && !j)
94		BIO_printf(out, "%*s", indent, "");
95	BIO_printf(out, "%02X", data[datalen - 1]);
96	return 1;
97}
98
99static void
100SCT_signature_algorithms_print(const SCT *sct, BIO *out)
101{
102	int nid = SCT_get_signature_nid(sct);
103
104	if (nid == NID_undef)
105		BIO_printf(out, "%02X%02X", sct->hash_alg, sct->sig_alg);
106	else
107		BIO_printf(out, "%s", OBJ_nid2ln(nid));
108}
109
110static void
111timestamp_print(uint64_t timestamp, BIO *out)
112{
113	ASN1_GENERALIZEDTIME *gen = ASN1_GENERALIZEDTIME_new();
114	char genstr[20];
115
116	if (gen == NULL)
117		return;
118	ASN1_GENERALIZEDTIME_adj(gen, (time_t)0, (int)(timestamp / 86400000),
119	    (timestamp % 86400000) / 1000);
120	/*
121	 * Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
122	 * characters long with a final Z. Update it with fractional seconds.
123	 */
124	snprintf(genstr, sizeof(genstr), "%.14sZ", ASN1_STRING_get0_data(gen));
125	if (ASN1_GENERALIZEDTIME_set_string(gen, genstr))
126		ASN1_GENERALIZEDTIME_print(out, gen);
127	ASN1_GENERALIZEDTIME_free(gen);
128}
129
130const char *
131SCT_validation_status_string(const SCT *sct)
132{
133	switch (SCT_get_validation_status(sct)) {
134	case SCT_VALIDATION_STATUS_NOT_SET:
135		return "not set";
136	case SCT_VALIDATION_STATUS_UNKNOWN_VERSION:
137		return "unknown version";
138	case SCT_VALIDATION_STATUS_UNKNOWN_LOG:
139		return "unknown log";
140	case SCT_VALIDATION_STATUS_UNVERIFIED:
141		return "unverified";
142	case SCT_VALIDATION_STATUS_INVALID:
143		return "invalid";
144	case SCT_VALIDATION_STATUS_VALID:
145		return "valid";
146	}
147	return "unknown status";
148}
149LCRYPTO_ALIAS(SCT_validation_status_string);
150
151void
152SCT_print(const SCT *sct, BIO *out, int indent, const CTLOG_STORE *log_store)
153{
154	const CTLOG *log = NULL;
155
156	if (log_store != NULL) {
157		log = CTLOG_STORE_get0_log_by_id(log_store, sct->log_id,
158		    sct->log_id_len);
159	}
160
161	BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
162	BIO_printf(out, "\n%*sVersion   : ", indent + 4, "");
163
164	if (sct->version != SCT_VERSION_V1) {
165		BIO_printf(out, "unknown\n%*s", indent + 16, "");
166		BIO_hex_string(out, indent + 16, 16, sct->sct, sct->sct_len);
167		return;
168	}
169
170	BIO_printf(out, "v1 (0x0)");
171
172	if (log != NULL) {
173		BIO_printf(out, "\n%*sLog       : %s", indent + 4, "",
174		    CTLOG_get0_name(log));
175	}
176
177	BIO_printf(out, "\n%*sLog ID    : ", indent + 4, "");
178	BIO_hex_string(out, indent + 16, 16, sct->log_id, sct->log_id_len);
179
180	BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
181	timestamp_print(sct->timestamp, out);
182
183	BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
184	if (sct->ext_len == 0)
185		BIO_printf(out, "none");
186	else
187		BIO_hex_string(out, indent + 16, 16, sct->ext, sct->ext_len);
188
189	BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
190	SCT_signature_algorithms_print(sct, out);
191	BIO_printf(out, "\n%*s            ", indent + 4, "");
192	BIO_hex_string(out, indent + 16, 16, sct->sig, sct->sig_len);
193}
194LCRYPTO_ALIAS(SCT_print);
195
196void
197SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
198    const char *separator, const CTLOG_STORE *log_store)
199{
200	int sct_count = sk_SCT_num(sct_list);
201	int i;
202
203	for (i = 0; i < sct_count; ++i) {
204		SCT *sct = sk_SCT_value(sct_list, i);
205
206		SCT_print(sct, out, indent, log_store);
207		if (i < sk_SCT_num(sct_list) - 1)
208			BIO_printf(out, "%s", separator);
209	}
210}
211LCRYPTO_ALIAS(SCT_LIST_print);
212