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 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 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 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 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 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 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 80 X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx) 81 { 82 return ctx->cert; 83 } 84 85 X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx) 86 { 87 return ctx->issuer; 88 } 89 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 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