Add checks for alloc failing.
[openssl.git] / crypto / ct / ct_prn.c
1 /*
2  * Copyright 2016 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 #ifdef OPENSSL_NO_CT
11 # error "CT is disabled"
12 #endif
13
14 #include <openssl/asn1.h>
15 #include <openssl/bio.h>
16
17 #include "ct_locl.h"
18
19 static void SCT_signature_algorithms_print(const SCT *sct, BIO *out)
20 {
21     int nid = SCT_get_signature_nid(sct);
22
23     if (nid == NID_undef)
24         BIO_printf(out, "%02X%02X", sct->hash_alg, sct->sig_alg);
25     else
26         BIO_printf(out, "%s", OBJ_nid2ln(nid));
27 }
28
29 static void timestamp_print(uint64_t timestamp, BIO *out)
30 {
31     ASN1_GENERALIZEDTIME *gen = ASN1_GENERALIZEDTIME_new();
32     char genstr[20];
33
34     if (gen == NULL)
35         return;
36     ASN1_GENERALIZEDTIME_adj(gen, (time_t)0,
37                              (int)(timestamp / 86400000),
38                              (timestamp % 86400000) / 1000);
39     /*
40      * Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
41      * characters long with a final Z. Update it with fractional seconds.
42      */
43     BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ",
44                  ASN1_STRING_get0_data(gen), (unsigned int)(timestamp % 1000));
45     if (ASN1_GENERALIZEDTIME_set_string(gen, genstr))
46         ASN1_GENERALIZEDTIME_print(out, gen);
47     ASN1_GENERALIZEDTIME_free(gen);
48 }
49
50 const char *SCT_validation_status_string(const SCT *sct)
51 {
52
53     switch (SCT_get_validation_status(sct)) {
54     case SCT_VALIDATION_STATUS_NOT_SET:
55         return "not set";
56     case SCT_VALIDATION_STATUS_UNKNOWN_VERSION:
57         return "unknown version";
58     case SCT_VALIDATION_STATUS_UNKNOWN_LOG:
59         return "unknown log";
60     case SCT_VALIDATION_STATUS_UNVERIFIED:
61         return "unverified";
62     case SCT_VALIDATION_STATUS_INVALID:
63         return "invalid";
64     case SCT_VALIDATION_STATUS_VALID:
65         return "valid";
66     }
67     return "unknown status";
68 }
69
70 void SCT_print(const SCT *sct, BIO *out, int indent,
71                const CTLOG_STORE *log_store)
72 {
73     const CTLOG *log = NULL;
74
75     if (log_store != NULL) {
76         log = CTLOG_STORE_get0_log_by_id(log_store, sct->log_id,
77                                          sct->log_id_len);
78     }
79
80     BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
81     BIO_printf(out, "\n%*sVersion   : ", indent + 4, "");
82
83     if (sct->version != SCT_VERSION_V1) {
84         BIO_printf(out, "unknown\n%*s", indent + 16, "");
85         BIO_hex_string(out, indent + 16, 16, sct->sct, sct->sct_len);
86         return;
87     }
88
89     BIO_printf(out, "v1 (0x0)");
90
91     if (log != NULL) {
92         BIO_printf(out, "\n%*sLog       : %s", indent + 4, "",
93                    CTLOG_get0_name(log));
94     }
95
96     BIO_printf(out, "\n%*sLog ID    : ", indent + 4, "");
97     BIO_hex_string(out, indent + 16, 16, sct->log_id, sct->log_id_len);
98
99     BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
100     timestamp_print(sct->timestamp, out);
101
102     BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
103     if (sct->ext_len == 0)
104         BIO_printf(out, "none");
105     else
106         BIO_hex_string(out, indent + 16, 16, sct->ext, sct->ext_len);
107
108     BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
109     SCT_signature_algorithms_print(sct, out);
110     BIO_printf(out, "\n%*s            ", indent + 4, "");
111     BIO_hex_string(out, indent + 16, 16, sct->sig, sct->sig_len);
112 }
113
114 void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
115                     const char *separator, const CTLOG_STORE *log_store)
116 {
117     int sct_count = sk_SCT_num(sct_list);
118     int i;
119
120     for (i = 0; i < sct_count; ++i) {
121         SCT *sct = sk_SCT_value(sct_list, i);
122
123         SCT_print(sct, out, indent, log_store);
124         if (i < sk_SCT_num(sct_list) - 1)
125             BIO_printf(out, "%s", separator);
126     }
127 }