crypto/ct/ct_prn.c

   1 /*
   2  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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_local.h"
  18
  19 DEFINE_STACK_OF(SCT)
  20
  21 static void SCT_signature_algorithms_print(const SCT *sct, BIO *out)
  22 {
  23     int nid = SCT_get_signature_nid(sct);
  24
  25     if (nid == NID_undef)
  26         BIO_printf(out, "%02X%02X", sct->hash_alg, sct->sig_alg);
  27     else
  28         BIO_printf(out, "%s", OBJ_nid2ln(nid));
  29 }
  30
  31 static void timestamp_print(uint64_t timestamp, BIO *out)
  32 {
  33     ASN1_GENERALIZEDTIME *gen = ASN1_GENERALIZEDTIME_new();
  34     char genstr[20];
  35
  36     if (gen == NULL)
  37         return;
  38     ASN1_GENERALIZEDTIME_adj(gen, (time_t)0,
  39                              (int)(timestamp / 86400000),
  40                              (timestamp % 86400000) / 1000);
  41     /*
  42      * Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
  43      * characters long with a final Z. Update it with fractional seconds.
  44      */
  45     BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ",
  46                  ASN1_STRING_get0_data(gen), (unsigned int)(timestamp % 1000));
  47     if (ASN1_GENERALIZEDTIME_set_string(gen, genstr))
  48         ASN1_GENERALIZEDTIME_print(out, gen);
  49     ASN1_GENERALIZEDTIME_free(gen);
  50 }
  51
  52 const char *SCT_validation_status_string(const SCT *sct)
  53 {
  54
  55     switch (SCT_get_validation_status(sct)) {
  56     case SCT_VALIDATION_STATUS_NOT_SET:
  57         return "not set";
  58     case SCT_VALIDATION_STATUS_UNKNOWN_VERSION:
  59         return "unknown version";
  60     case SCT_VALIDATION_STATUS_UNKNOWN_LOG:
  61         return "unknown log";
  62     case SCT_VALIDATION_STATUS_UNVERIFIED:
  63         return "unverified";
  64     case SCT_VALIDATION_STATUS_INVALID:
  65         return "invalid";
  66     case SCT_VALIDATION_STATUS_VALID:
  67         return "valid";
  68     }
  69     return "unknown status";
  70 }
  71
  72 void SCT_print(const SCT *sct, BIO *out, int indent,
  73                const CTLOG_STORE *log_store)
  74 {
  75     const CTLOG *log = NULL;
  76
  77     if (log_store != NULL) {
  78         log = CTLOG_STORE_get0_log_by_id(log_store, sct->log_id,
  79                                          sct->log_id_len);
  80     }
  81
  82     BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
  83     BIO_printf(out, "\n%*sVersion   : ", indent + 4, "");
  84
  85     if (sct->version != SCT_VERSION_V1) {
  86         BIO_printf(out, "unknown\n%*s", indent + 16, "");
  87         BIO_hex_string(out, indent + 16, 16, sct->sct, sct->sct_len);
  88         return;
  89     }
  90
  91     BIO_printf(out, "v1 (0x0)");
  92
  93     if (log != NULL) {
  94         BIO_printf(out, "\n%*sLog       : %s", indent + 4, "",
  95                    CTLOG_get0_name(log));
  96     }
  97
  98     BIO_printf(out, "\n%*sLog ID    : ", indent + 4, "");
  99     BIO_hex_string(out, indent + 16, 16, sct->log_id, sct->log_id_len);
 100
 101     BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
 102     timestamp_print(sct->timestamp, out);
 103
 104     BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
 105     if (sct->ext_len == 0)
 106         BIO_printf(out, "none");
 107     else
 108         BIO_hex_string(out, indent + 16, 16, sct->ext, sct->ext_len);
 109
 110     BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
 111     SCT_signature_algorithms_print(sct, out);
 112     BIO_printf(out, "\n%*s            ", indent + 4, "");
 113     BIO_hex_string(out, indent + 16, 16, sct->sig, sct->sig_len);
 114 }
 115
 116 void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
 117                     const char *separator, const CTLOG_STORE *log_store)
 118 {
 119     int sct_count = sk_SCT_num(sct_list);
 120     int i;
 121
 122     for (i = 0; i < sct_count; ++i) {
 123         SCT *sct = sk_SCT_value(sct_list, i);
 124
 125         SCT_print(sct, out, indent, log_store);
 126         if (i < sk_SCT_num(sct_list) - 1)
 127             BIO_printf(out, "%s", separator);
 128     }
 129 }