[331] | 1 | /*
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| 2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #ifdef OPENSSL_NO_CT
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| 11 | # error "CT is disabled"
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| 12 | #endif
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| 13 |
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| 14 | #include <openssl/ct.h>
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| 15 | #include <openssl/err.h>
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| 16 | #include <time.h>
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| 17 |
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| 18 | #include "ct_locl.h"
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| 19 |
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| 20 | /*
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| 21 | * Number of seconds in the future that an SCT timestamp can be, by default,
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| 22 | * without being considered invalid. This is added to time() when setting a
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| 23 | * default value for CT_POLICY_EVAL_CTX.epoch_time_in_ms.
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| 24 | * It can be overridden by calling CT_POLICY_EVAL_CTX_set_time().
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| 25 | */
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| 26 | static const time_t SCT_CLOCK_DRIFT_TOLERANCE = 300;
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| 27 |
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| 28 | CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void)
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| 29 | {
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| 30 | CT_POLICY_EVAL_CTX *ctx = OPENSSL_zalloc(sizeof(CT_POLICY_EVAL_CTX));
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| 31 |
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| 32 | if (ctx == NULL) {
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| 33 | CTerr(CT_F_CT_POLICY_EVAL_CTX_NEW, ERR_R_MALLOC_FAILURE);
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| 34 | return NULL;
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| 35 | }
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| 36 |
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| 37 | /* time(NULL) shouldn't ever fail, so don't bother checking for -1. */
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| 38 | ctx->epoch_time_in_ms = (uint64_t)(time(NULL) + SCT_CLOCK_DRIFT_TOLERANCE) *
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| 39 | 1000;
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| 40 |
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| 41 | return ctx;
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| 42 | }
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| 43 |
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| 44 | void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx)
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| 45 | {
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| 46 | if (ctx == NULL)
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| 47 | return;
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| 48 | X509_free(ctx->cert);
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| 49 | X509_free(ctx->issuer);
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| 50 | OPENSSL_free(ctx);
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| 51 | }
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| 52 |
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| 53 | int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert)
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| 54 | {
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| 55 | if (!X509_up_ref(cert))
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| 56 | return 0;
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| 57 | ctx->cert = cert;
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| 58 | return 1;
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| 59 | }
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| 60 |
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| 61 | int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer)
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| 62 | {
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| 63 | if (!X509_up_ref(issuer))
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| 64 | return 0;
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| 65 | ctx->issuer = issuer;
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| 66 | return 1;
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| 67 | }
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| 68 |
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| 69 | void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,
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| 70 | CTLOG_STORE *log_store)
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| 71 | {
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| 72 | ctx->log_store = log_store;
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| 73 | }
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| 74 |
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| 75 | void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms)
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| 76 | {
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| 77 | ctx->epoch_time_in_ms = time_in_ms;
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| 78 | }
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| 79 |
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| 80 | X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx)
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| 81 | {
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| 82 | return ctx->cert;
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| 83 | }
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| 84 |
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| 85 | X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx)
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| 86 | {
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| 87 | return ctx->issuer;
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| 88 | }
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| 89 |
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| 90 | const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx)
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| 91 | {
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| 92 | return ctx->log_store;
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| 93 | }
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| 94 |
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| 95 | uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx)
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| 96 | {
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| 97 | return ctx->epoch_time_in_ms;
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| 98 | }
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