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/ct.h>
15 #include <openssl/err.h>
16 #include <time.h>
17
18 #include "ct_local.h"
19
20 /*
21 * Number of seconds in the future that an SCT timestamp can be, by default,
22 * without being considered invalid. This is added to time() when setting a
23 * default value for CT_POLICY_EVAL_CTX.epoch_time_in_ms.
24 * It can be overridden by calling CT_POLICY_EVAL_CTX_set_time().
25 */
26 static const time_t SCT_CLOCK_DRIFT_TOLERANCE = 300;
27
CT_POLICY_EVAL_CTX_new(void)28 CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void)
29 {
30 CT_POLICY_EVAL_CTX *ctx = OPENSSL_zalloc(sizeof(CT_POLICY_EVAL_CTX));
31
32 if (ctx == NULL) {
33 CTerr(CT_F_CT_POLICY_EVAL_CTX_NEW, ERR_R_MALLOC_FAILURE);
34 return NULL;
35 }
36
37 /* time(NULL) shouldn't ever fail, so don't bother checking for -1. */
38 ctx->epoch_time_in_ms = (uint64_t)(time(NULL) + SCT_CLOCK_DRIFT_TOLERANCE) *
39 1000;
40
41 return ctx;
42 }
43
CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX * ctx)44 void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx)
45 {
46 if (ctx == NULL)
47 return;
48 X509_free(ctx->cert);
49 X509_free(ctx->issuer);
50 OPENSSL_free(ctx);
51 }
52
CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX * ctx,X509 * cert)53 int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert)
54 {
55 if (!X509_up_ref(cert))
56 return 0;
57 ctx->cert = cert;
58 return 1;
59 }
60
CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX * ctx,X509 * issuer)61 int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer)
62 {
63 if (!X509_up_ref(issuer))
64 return 0;
65 ctx->issuer = issuer;
66 return 1;
67 }
68
CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX * ctx,CTLOG_STORE * log_store)69 void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,
70 CTLOG_STORE *log_store)
71 {
72 ctx->log_store = log_store;
73 }
74
CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX * ctx,uint64_t time_in_ms)75 void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms)
76 {
77 ctx->epoch_time_in_ms = time_in_ms;
78 }
79
CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX * ctx)80 X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx)
81 {
82 return ctx->cert;
83 }
84
CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX * ctx)85 X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx)
86 {
87 return ctx->issuer;
88 }
89
CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX * ctx)90 const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx)
91 {
92 return ctx->log_store;
93 }
94
CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX * ctx)95 uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx)
96 {
97 return ctx->epoch_time_in_ms;
98 }
99