1 /*
2 * Copyright 2016-2020 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/ct.h>
15 #include <openssl/err.h>
16 #include "internal/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_ex(OSSL_LIB_CTX * libctx,const char * propq)28 CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new_ex(OSSL_LIB_CTX *libctx,
29 const char *propq)
30 {
31 CT_POLICY_EVAL_CTX *ctx = OPENSSL_zalloc(sizeof(CT_POLICY_EVAL_CTX));
32 OSSL_TIME now;
33
34 if (ctx == NULL)
35 return NULL;
36
37 ctx->libctx = libctx;
38 if (propq != NULL) {
39 ctx->propq = OPENSSL_strdup(propq);
40 if (ctx->propq == NULL) {
41 OPENSSL_free(ctx);
42 return NULL;
43 }
44 }
45
46 now = ossl_time_add(ossl_time_now(),
47 ossl_seconds2time(SCT_CLOCK_DRIFT_TOLERANCE));
48 ctx->epoch_time_in_ms = ossl_time2ms(now);
49
50 return ctx;
51 }
52
CT_POLICY_EVAL_CTX_new(void)53 CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void)
54 {
55 return CT_POLICY_EVAL_CTX_new_ex(NULL, NULL);
56 }
57
CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX * ctx)58 void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx)
59 {
60 if (ctx == NULL)
61 return;
62 X509_free(ctx->cert);
63 X509_free(ctx->issuer);
64 OPENSSL_free(ctx->propq);
65 OPENSSL_free(ctx);
66 }
67
CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX * ctx,X509 * cert)68 int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert)
69 {
70 if (!X509_up_ref(cert))
71 return 0;
72 ctx->cert = cert;
73 return 1;
74 }
75
CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX * ctx,X509 * issuer)76 int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer)
77 {
78 if (!X509_up_ref(issuer))
79 return 0;
80 ctx->issuer = issuer;
81 return 1;
82 }
83
CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX * ctx,CTLOG_STORE * log_store)84 void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,
85 CTLOG_STORE *log_store)
86 {
87 ctx->log_store = log_store;
88 }
89
CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX * ctx,uint64_t time_in_ms)90 void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms)
91 {
92 ctx->epoch_time_in_ms = time_in_ms;
93 }
94
CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX * ctx)95 X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx)
96 {
97 return ctx->cert;
98 }
99
CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX * ctx)100 X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx)
101 {
102 return ctx->issuer;
103 }
104
CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX * ctx)105 const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx)
106 {
107 return ctx->log_store;
108 }
109
CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX * ctx)110 uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx)
111 {
112 return ctx->epoch_time_in_ms;
113 }
114
