/*

 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#ifdef OPENSSL_NO_CT

# error "CT is disabled"

#endif

#include <openssl/ct.h>

#include <openssl/err.h>

#include <time.h>

#include "ct_local.h"

/*

 * Number of seconds in the future that an SCT timestamp can be, by default,

 * without being considered invalid. This is added to time() when setting a

 * default value for CT_POLICY_EVAL_CTX.epoch_time_in_ms.

 * It can be overridden by calling CT_POLICY_EVAL_CTX_set_time().

 */

static const time_t SCT_CLOCK_DRIFT_TOLERANCE = 300;

CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void)

{

    CT_POLICY_EVAL_CTX *ctx = OPENSSL_zalloc(sizeof(CT_POLICY_EVAL_CTX));

    if (ctx == NULL) {

        CTerr(CT_F_CT_POLICY_EVAL_CTX_NEW, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

    /* time(NULL) shouldn't ever fail, so don't bother checking for -1. */

    ctx->epoch_time_in_ms = (uint64_t)(time(NULL) + SCT_CLOCK_DRIFT_TOLERANCE) *

            1000;

    return ctx;

}

void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx)

{

    if (ctx == NULL)

        return;

    X509_free(ctx->cert);

    X509_free(ctx->issuer);

    OPENSSL_free(ctx);

}

int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert)

{

    if (!X509_up_ref(cert))

        return 0;

    ctx->cert = cert;

    return 1;

}

int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer)

{

    if (!X509_up_ref(issuer))

        return 0;

    ctx->issuer = issuer;

    return 1;

}

void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,

                                               CTLOG_STORE *log_store)

{

    ctx->log_store = log_store;

}

void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms)

{

    ctx->epoch_time_in_ms = time_in_ms;

}

X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx)

{

    return ctx->cert;

}

X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx)

{

    return ctx->issuer;

}

const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx)

{

    return ctx->log_store;

}

uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx)

{

    return ctx->epoch_time_in_ms;

}