| /* |
| * 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> |
| #include <openssl/conf_api.h> |
| |
| /* 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) |
| ERR_raise(ERR_LIB_TS, 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)) { |
| OSSL_STACK_OF_X509_free(othercerts); |
| othercerts = NULL; |
| goto end; |
| } |
| xi->x509 = NULL; |
| } |
| } |
| end: |
| if (othercerts == NULL) |
| ERR_raise(ERR_LIB_TS, 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) |
| ERR_raise(ERR_LIB_TS, 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) |
| { |
| ERR_raise_data(ERR_LIB_TS, TS_R_VAR_LOOKUP_FAILURE, "%s::%s", name, tag); |
| } |
| |
| static void ts_CONF_invalid(const char *name, const char *tag) |
| { |
| ERR_raise_data(ERR_LIB_TS, TS_R_VAR_BAD_VALUE, "%s::%s", 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) |
| ERR_raise_data(ERR_LIB_TS, TS_R_COULD_NOT_SET_ENGINE, |
| "engine:%s", 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(conf, section, ENV_CERTS)) == NULL) |
| goto end; |
| } |
| if ((certs_obj = TS_CONF_load_certs(certs)) == NULL) |
| goto err; |
| if (!TS_RESP_CTX_set_certs(ctx, certs_obj)) |
| goto err; |
| end: |
| ret = 1; |
| err: |
| OSSL_STACK_OF_X509_free(certs_obj); |
| return ret; |
| } |
| |
| int TS_CONF_set_signer_key(CONF *conf, const char *section, |
| const char *key, const char *pass, |
| TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| EVP_PKEY *key_obj = NULL; |
| if (!key) |
| key = NCONF_get_string(conf, section, ENV_SIGNER_KEY); |
| if (!key) { |
| ts_CONF_lookup_fail(section, ENV_SIGNER_KEY); |
| goto err; |
| } |
| if ((key_obj = TS_CONF_load_key(key, pass)) == NULL) |
| goto err; |
| if (!TS_RESP_CTX_set_signer_key(ctx, key_obj)) |
| goto err; |
| |
| ret = 1; |
| err: |
| EVP_PKEY_free(key_obj); |
| return ret; |
| } |
| |
| int TS_CONF_set_signer_digest(CONF *conf, const char *section, |
| const char *md, TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| const EVP_MD *sign_md = NULL; |
| if (md == NULL) |
| md = NCONF_get_string(conf, section, ENV_SIGNER_DIGEST); |
| if (md == NULL) { |
| ts_CONF_lookup_fail(section, ENV_SIGNER_DIGEST); |
| goto err; |
| } |
| sign_md = EVP_get_digestbyname(md); |
| if (sign_md == NULL) { |
| ts_CONF_invalid(section, ENV_SIGNER_DIGEST); |
| goto err; |
| } |
| if (!TS_RESP_CTX_set_signer_digest(ctx, sign_md)) |
| goto err; |
| |
| ret = 1; |
| err: |
| return ret; |
| } |
| |
| int TS_CONF_set_def_policy(CONF *conf, const char *section, |
| const char *policy, TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| ASN1_OBJECT *policy_obj = NULL; |
| |
| if (policy == NULL) |
| policy = NCONF_get_string(conf, section, ENV_DEFAULT_POLICY); |
| if (policy == NULL) { |
| ts_CONF_lookup_fail(section, ENV_DEFAULT_POLICY); |
| goto err; |
| } |
| if ((policy_obj = OBJ_txt2obj(policy, 0)) == NULL) { |
| ts_CONF_invalid(section, ENV_DEFAULT_POLICY); |
| goto err; |
| } |
| if (!TS_RESP_CTX_set_def_policy(ctx, policy_obj)) |
| goto err; |
| |
| ret = 1; |
| err: |
| ASN1_OBJECT_free(policy_obj); |
| return ret; |
| } |
| |
| int TS_CONF_set_policies(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| int i; |
| STACK_OF(CONF_VALUE) *list = NULL; |
| char *policies = NCONF_get_string(conf, section, ENV_OTHER_POLICIES); |
| |
| /* If no other policy is specified, that's fine. */ |
| if (policies && (list = X509V3_parse_list(policies)) == NULL) { |
| ts_CONF_invalid(section, ENV_OTHER_POLICIES); |
| goto err; |
| } |
| for (i = 0; i < sk_CONF_VALUE_num(list); ++i) { |
| CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| const char *extval = val->value ? val->value : val->name; |
| ASN1_OBJECT *objtmp; |
| |
| if ((objtmp = OBJ_txt2obj(extval, 0)) == NULL) { |
| ts_CONF_invalid(section, ENV_OTHER_POLICIES); |
| goto err; |
| } |
| if (!TS_RESP_CTX_add_policy(ctx, objtmp)) |
| goto err; |
| ASN1_OBJECT_free(objtmp); |
| } |
| |
| ret = 1; |
| err: |
| sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| return ret; |
| } |
| |
| int TS_CONF_set_digests(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| int i; |
| STACK_OF(CONF_VALUE) *list = NULL; |
| char *digests = NCONF_get_string(conf, section, ENV_DIGESTS); |
| |
| if (digests == NULL) { |
| ts_CONF_lookup_fail(section, ENV_DIGESTS); |
| goto err; |
| } |
| if ((list = X509V3_parse_list(digests)) == NULL) { |
| ts_CONF_invalid(section, ENV_DIGESTS); |
| goto err; |
| } |
| if (sk_CONF_VALUE_num(list) == 0) { |
| ts_CONF_invalid(section, ENV_DIGESTS); |
| goto err; |
| } |
| for (i = 0; i < sk_CONF_VALUE_num(list); ++i) { |
| CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| const char *extval = val->value ? val->value : val->name; |
| const EVP_MD *md; |
| |
| if ((md = EVP_get_digestbyname(extval)) == NULL) { |
| ts_CONF_invalid(section, ENV_DIGESTS); |
| goto err; |
| } |
| if (!TS_RESP_CTX_add_md(ctx, md)) |
| goto err; |
| } |
| |
| ret = 1; |
| err: |
| sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| return ret; |
| } |
| |
| int TS_CONF_set_accuracy(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| int i; |
| int secs = 0, millis = 0, micros = 0; |
| STACK_OF(CONF_VALUE) *list = NULL; |
| char *accuracy = NCONF_get_string(conf, section, ENV_ACCURACY); |
| |
| if (accuracy && (list = X509V3_parse_list(accuracy)) == NULL) { |
| ts_CONF_invalid(section, ENV_ACCURACY); |
| goto err; |
| } |
| for (i = 0; i < sk_CONF_VALUE_num(list); ++i) { |
| CONF_VALUE *val = sk_CONF_VALUE_value(list, i); |
| if (strcmp(val->name, ENV_VALUE_SECS) == 0) { |
| if (val->value) |
| secs = atoi(val->value); |
| } else if (strcmp(val->name, ENV_VALUE_MILLISECS) == 0) { |
| if (val->value) |
| millis = atoi(val->value); |
| } else if (strcmp(val->name, ENV_VALUE_MICROSECS) == 0) { |
| if (val->value) |
| micros = atoi(val->value); |
| } else { |
| ts_CONF_invalid(section, ENV_ACCURACY); |
| goto err; |
| } |
| } |
| if (!TS_RESP_CTX_set_accuracy(ctx, secs, millis, micros)) |
| goto err; |
| |
| ret = 1; |
| err: |
| sk_CONF_VALUE_pop_free(list, X509V3_conf_free); |
| return ret; |
| } |
| |
| int TS_CONF_set_clock_precision_digits(const CONF *conf, const char *section, |
| TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| long digits = 0; |
| |
| /* |
| * If not specified, set the default value to 0, i.e. sec precision |
| */ |
| digits = _CONF_get_number(conf, section, ENV_CLOCK_PRECISION_DIGITS); |
| if (digits < 0 || digits > TS_MAX_CLOCK_PRECISION_DIGITS) { |
| ts_CONF_invalid(section, ENV_CLOCK_PRECISION_DIGITS); |
| goto err; |
| } |
| |
| if (!TS_RESP_CTX_set_clock_precision_digits(ctx, digits)) |
| goto err; |
| |
| return 1; |
| err: |
| return ret; |
| } |
| |
| static int ts_CONF_add_flag(CONF *conf, const char *section, |
| const char *field, int flag, TS_RESP_CTX *ctx) |
| { |
| const char *value = NCONF_get_string(conf, section, field); |
| |
| if (value) { |
| if (strcmp(value, ENV_VALUE_YES) == 0) |
| TS_RESP_CTX_add_flags(ctx, flag); |
| else if (strcmp(value, ENV_VALUE_NO) != 0) { |
| ts_CONF_invalid(section, field); |
| return 0; |
| } |
| } |
| |
| return 1; |
| } |
| |
| int TS_CONF_set_ordering(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| { |
| return ts_CONF_add_flag(conf, section, ENV_ORDERING, TS_ORDERING, ctx); |
| } |
| |
| int TS_CONF_set_tsa_name(CONF *conf, const char *section, TS_RESP_CTX *ctx) |
| { |
| return ts_CONF_add_flag(conf, section, ENV_TSA_NAME, TS_TSA_NAME, ctx); |
| } |
| |
| int TS_CONF_set_ess_cert_id_chain(CONF *conf, const char *section, |
| TS_RESP_CTX *ctx) |
| { |
| return ts_CONF_add_flag(conf, section, ENV_ESS_CERT_ID_CHAIN, |
| TS_ESS_CERT_ID_CHAIN, ctx); |
| } |
| |
| int TS_CONF_set_ess_cert_id_digest(CONF *conf, const char *section, |
| TS_RESP_CTX *ctx) |
| { |
| int ret = 0; |
| const EVP_MD *cert_md = NULL; |
| const char *md = NCONF_get_string(conf, section, ENV_ESS_CERT_ID_ALG); |
| |
| if (md == NULL) |
| md = "sha1"; |
| |
| cert_md = EVP_get_digestbyname(md); |
| if (cert_md == NULL) { |
| ts_CONF_invalid(section, ENV_ESS_CERT_ID_ALG); |
| goto err; |
| } |
| |
| if (!TS_RESP_CTX_set_ess_cert_id_digest(ctx, cert_md)) |
| goto err; |
| |
| ret = 1; |
| err: |
| return ret; |
| } |
