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/*
* Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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
*/
/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED
#include <string.h>
#include <openssl/crypto.h>
#include "internal/cryptlib.h"
#include <openssl/pem.h>
#include <openssl/engine.h>
#include <openssl/ts.h>
DEFINE_STACK_OF(CONF_VALUE)
/* Macro definitions for the configuration file. */
#define BASE_SECTION "tsa"
#define ENV_DEFAULT_TSA "default_tsa"
#define ENV_SERIAL "serial"
#define ENV_CRYPTO_DEVICE "crypto_device"
#define ENV_SIGNER_CERT "signer_cert"
#define ENV_CERTS "certs"
#define ENV_SIGNER_KEY "signer_key"
#define ENV_SIGNER_DIGEST "signer_digest"
#define ENV_DEFAULT_POLICY "default_policy"
#define ENV_OTHER_POLICIES "other_policies"
#define ENV_DIGESTS "digests"
#define ENV_ACCURACY "accuracy"
#define ENV_ORDERING "ordering"
#define ENV_TSA_NAME "tsa_name"
#define ENV_ESS_CERT_ID_CHAIN "ess_cert_id_chain"
#define ENV_VALUE_SECS "secs"
#define ENV_VALUE_MILLISECS "millisecs"
#define ENV_VALUE_MICROSECS "microsecs"
#define ENV_CLOCK_PRECISION_DIGITS "clock_precision_digits"
#define ENV_VALUE_YES "yes"
#define ENV_VALUE_NO "no"
#define ENV_ESS_CERT_ID_ALG "ess_cert_id_alg"
/* Function definitions for certificate and key loading. */
X509 *TS_CONF_load_cert(const char *file)
{
BIO *cert = NULL;
X509 *x = NULL;
if ((cert = BIO_new_file(file, "r")) == NULL)
goto end;
x = PEM_read_bio_X509_AUX(cert, NULL, NULL, NULL);
end:
if (x == NULL)
TSerr(TS_F_TS_CONF_LOAD_CERT, TS_R_CANNOT_LOAD_CERT);
BIO_free(cert);
return x;
}
STACK_OF(X509) *TS_CONF_load_certs(const char *file)
{
BIO *certs = NULL;
STACK_OF(X509) *othercerts = NULL;
STACK_OF(X509_INFO) *allcerts = NULL;
int i;
if ((certs = BIO_new_file(file, "r")) == NULL)
goto end;
if ((othercerts = sk_X509_new_null()) == NULL)
goto end;
allcerts = PEM_X509_INFO_read_bio(certs, NULL, NULL, NULL);
for (i = 0; i < sk_X509_INFO_num(allcerts); i++) {
X509_INFO *xi = sk_X509_INFO_value(allcerts, i);
if (xi->x509 != NULL) {
if (!X509_add_cert(othercerts, xi->x509, X509_ADD_FLAG_DEFAULT)) {
sk_X509_pop_free(othercerts, X509_free);
othercerts = NULL;
goto end;
}
xi->x509 = NULL;
}
}
end:
if (othercerts == NULL)
TSerr(TS_F_TS_CONF_LOAD_CERTS, TS_R_CANNOT_LOAD_CERT);
sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
BIO_free(certs);
return othercerts;
}
EVP_PKEY *TS_CONF_load_key(const char *file, const char *pass)
{
BIO *key = NULL;
EVP_PKEY *pkey = NULL;
if ((key = BIO_new_file(file, "r")) == NULL)
goto end;
pkey = PEM_read_bio_PrivateKey(key, NULL, NULL, (char *)pass);
end:
if (pkey == NULL)
TSerr(TS_F_TS_CONF_LOAD_KEY, TS_R_CANNOT_LOAD_KEY);
BIO_free(key);
return pkey;
}
/* Function definitions for handling configuration options. */
static void ts_CONF_lookup_fail(const char *name, const char *tag)
{
TSerr(TS_F_TS_CONF_LOOKUP_FAIL, TS_R_VAR_LOOKUP_FAILURE);
ERR_add_error_data(3, name, "::", tag);
}
static void ts_CONF_invalid(const char *name, const char *tag)
{
TSerr(TS_F_TS_CONF_INVALID, TS_R_VAR_BAD_VALUE);
ERR_add_error_data(3, name, "::", tag);
}
const char *TS_CONF_get_tsa_section(CONF *conf, const char *section)
{
if (!section) {
section = NCONF_get_string(conf, BASE_SECTION, ENV_DEFAULT_TSA);
if (!section)
ts_CONF_lookup_fail(BASE_SECTION, ENV_DEFAULT_TSA);
}
return section;
}
int TS_CONF_set_serial(CONF *conf, const char *section, TS_serial_cb cb,
TS_RESP_CTX *ctx)
{
int ret = 0;
char *serial = NCONF_get_string(conf, section, ENV_SERIAL);
if (!serial) {
ts_CONF_lookup_fail(section, ENV_SERIAL);
goto err;
}
TS_RESP_CTX_set_serial_cb(ctx, cb, serial);
ret = 1;
err:
return ret;
}
#ifndef OPENSSL_NO_ENGINE
int TS_CONF_set_crypto_device(CONF *conf, const char *section,
const char *device)
{
int ret = 0;
if (device == NULL)
device = NCONF_get_string(conf, section, ENV_CRYPTO_DEVICE);
if (device && !TS_CONF_set_default_engine(device)) {
ts_CONF_invalid(section, ENV_CRYPTO_DEVICE);
goto err;
}
ret = 1;
err:
return ret;
}
int TS_CONF_set_default_engine(const char *name)
{
ENGINE *e = NULL;
int ret = 0;
if (strcmp(name, "builtin") == 0)
return 1;
if ((e = ENGINE_by_id(name)) == NULL)
goto err;
if (strcmp(name, "chil") == 0)
ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0);
if (!ENGINE_set_default(e, ENGINE_METHOD_ALL))
goto err;
ret = 1;
err:
if (!ret) {
TSerr(TS_F_TS_CONF_SET_DEFAULT_ENGINE, TS_R_COULD_NOT_SET_ENGINE);
ERR_add_error_data(2, "engine:", name);
}
ENGINE_free(e);
return ret;
}
#endif
int TS_CONF_set_signer_cert(CONF *conf, const char *section,
const char *cert, TS_RESP_CTX *ctx)
{
int ret = 0;
X509 *cert_obj = NULL;
if (cert == NULL) {
cert = NCONF_get_string(conf, section, ENV_SIGNER_CERT);
if (cert == NULL) {
ts_CONF_lookup_fail(section, ENV_SIGNER_CERT);
goto err;
}
}
if ((cert_obj = TS_CONF_load_cert(cert)) == NULL)
goto err;
if (!TS_RESP_CTX_set_signer_cert(ctx, cert_obj))
goto err;
ret = 1;
err:
X509_free(cert_obj);
return ret;
}
int TS_CONF_set_certs(CONF *conf, const char *section, const char *certs,
TS_RESP_CTX *ctx)
{
int ret = 0;
STACK_OF(X509) *certs_obj = NULL;
if (certs == NULL) {
/* Certificate chain is optional. */
if ((certs = NCONF_get_string<
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