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 <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_ex(OSSL_LIB_CTX *libctx, 29 const char *propq) 30 { 31 CT_POLICY_EVAL_CTX *ctx = OPENSSL_zalloc(sizeof(CT_POLICY_EVAL_CTX)); 32 33 if (ctx == NULL) { 34 ERR_raise(ERR_LIB_CT, ERR_R_MALLOC_FAILURE); 35 return NULL; 36 } 37 38 ctx->libctx = libctx; 39 if (propq != NULL) { 40 ctx->propq = OPENSSL_strdup(propq); 41 if (ctx->propq == NULL) { 42 ERR_raise(ERR_LIB_CT, ERR_R_MALLOC_FAILURE); 43 OPENSSL_free(ctx); 44 return NULL; 45 } 46 } 47 48 /* time(NULL) shouldn't ever fail, so don't bother checking for -1. */ 49 ctx->epoch_time_in_ms = (uint64_t)(time(NULL) + SCT_CLOCK_DRIFT_TOLERANCE) * 50 1000; 51 52 return ctx; 53 } 54 55 CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void) 56 { 57 return CT_POLICY_EVAL_CTX_new_ex(NULL, NULL); 58 } 59 60 void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx) 61 { 62 if (ctx == NULL) 63 return; 64 X509_free(ctx->cert); 65 X509_free(ctx->issuer); 66 OPENSSL_free(ctx->propq); 67 OPENSSL_free(ctx); 68 } 69 70 int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert) 71 { 72 if (!X509_up_ref(cert)) 73 return 0; 74 ctx->cert = cert; 75 return 1; 76 } 77 78 int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer) 79 { 80 if (!X509_up_ref(issuer)) 81 return 0; 82 ctx->issuer = issuer; 83 return 1; 84 } 85 86 void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx, 87 CTLOG_STORE *log_store) 88 { 89 ctx->log_store = log_store; 90 } 91 92 void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms) 93 { 94 ctx->epoch_time_in_ms = time_in_ms; 95 } 96 97 X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx) 98 { 99 return ctx->cert; 100 } 101 102 X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx) 103 { 104 return ctx->issuer; 105 } 106 107 const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx) 108 { 109 return ctx->log_store; 110 } 111 112 uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx) 113 { 114 return ctx->epoch_time_in_ms; 115 } 116