/* * Copyright 2006-2022 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 */ #include <openssl/opensslconf.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "apps.h" #include "progs.h" #include <openssl/bio.h> #include <openssl/err.h> #include <openssl/pem.h> #include <openssl/rand.h> #include <openssl/ts.h> #include <openssl/bn.h> /* Request nonce length, in bits (must be a multiple of 8). */ #define NONCE_LENGTH 64 /* Name of config entry that defines the OID file. */ #define ENV_OID_FILE "oid_file" /* Is |EXACTLY_ONE| of three pointers set? */ #define EXACTLY_ONE(a, b, c) \ (( a && !b && !c) || \ ( b && !a && !c) || \ ( c && !a && !b)) static ASN1_OBJECT *txt2obj(const char *oid); static CONF *load_config_file(const char *configfile); /* Query related functions. */ static int query_command(const char *data, const char *digest, const EVP_MD *md, const char *policy, int no_nonce, int cert, const char *in, const char *out, int text); static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, const char *policy, int no_nonce, int cert); static int create_digest(BIO *input, const char *digest, const EVP_MD *md, unsigned char **md_value); static ASN1_INTEGER *create_nonce(int bits); /* Reply related functions. */ static int reply_command(CONF *conf, const char *section, const char *engine, const char *queryfile, const char *passin, const char *inkey, const EVP_MD *md, const char *signer, const char *chain, const char *policy, const char *in, int token_in, const char *out, int token_out, int text); static TS_RESP *read_PKCS7(BIO *in_bio); static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, const char *queryfile, const char *passin, const char *inkey, const EVP_MD *md, const char *signer, const char *chain, const char *policy); static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data); static ASN1_INTEGER *next_serial(const char *serialfile); static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); /* Verify related functions. */ static int verify_command(const char *data, const char *digest, const char *queryfile, const char *in, int token_in, const char *CApath, const char *CAfile, const char *CAstore, char *untrusted, X509_VERIFY_PARAM *vpm); static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, const char *queryfile, const char *CApath, const char *CAfile, const char *CAstore, char *untrusted, X509_VERIFY_PARAM *vpm); static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, const char *CAstore, X509_VERIFY_PARAM *vpm); static int verify_cb(int ok, X509_STORE_CTX *ctx); typedef enum OPTION_choice { OPT_COMMON, OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, OPT_DIGEST, OPT_TSPOLICY, OPT_NO_NONCE, OPT_CERT, OPT_IN, OPT_TOKEN_IN, OPT_OUT, OPT_TOKEN_OUT, OPT_TEXT, OPT_REPLY, OPT_QUERYFILE, OPT_PASSIN, OPT_INKEY, OPT_SIGNER, OPT_CHAIN, OPT_VERIFY, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE, OPT_UNTRUSTED, OPT_MD, OPT_V_ENUM, OPT_R_ENUM, OPT_PROV_ENUM } OPTION_CHOICE; const OPTIONS ts_options[] = { OPT_SECTION("General"), {"help", OPT_HELP, '-', "Display this summary"}, {"config", OPT_CONFIG, '<', "Configuration file"}, {"section", OPT_SECTION, 's', "Section to use within config file"}, #ifndef OPENSSL_NO_ENGINE {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, #endif {"inkey", OPT_INKEY, 's', "File with private key for reply"}, {"signer", OPT_SIGNER, 's', "Signer certificate file"}, {"chain", OPT_CHAIN, '<', "File with signer CA chain"}, {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, {"CAstore", OPT_CASTORE, ':', "URI to trusted CA store"}, {"untrusted", OPT_UNTRUSTED, '<', "Extra untrusted certs"}, {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, {"", OPT_MD, '-', "Any supported digest"}, OPT_SECTION("Query"), {"query", OPT_QUERY, '-', "Generate a TS query"}, {"data", OPT_DATA, '<', "File to hash"}, {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, {"cert", OPT_CERT, '-', "Put cert request into query"}, {"in", OPT_IN, '<', "Input file"}, OPT_SECTION("Verify"), {"verify", OPT_VERIFY, '-', "Verify a TS response"}, {"reply", OPT_REPLY, '-', "Generate a TS reply"}, {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, {"out", OPT_OUT, '>', "Output file"}, {"text", OPT_TEXT, '-', "Output text (not DER)"}, OPT_R_OPTIONS, OPT_V_OPTIONS, OPT_PROV_OPTIONS, {NULL} }; /* * This command is so complex, special help is needed. */ static char* opt_helplist[] = { "", "Typical uses:", " openssl ts -query [-rand file...] [-config file] [-data file]", " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", " [-in file] [-out file] [-text]", "", " openssl ts -reply [-config file] [-section tsa_section]", " [-queryfile file] [-passin password]", " [-signer tsa_cert.pem] [-inkey private_key.pem]", " [-chain certs_file.pem] [-tspolicy oid]", " [-in file] [-token_in] [-out file] [-token_out]", #ifndef OPENSSL_NO_ENGINE " [-text] [-engine id]", #else " [-text]", #endif "", " openssl ts -verify -CApath dir -CAfile root-cert.pem -CAstore uri", " -untrusted extra-certs.pem [-data file] [-digest hexstring]", " [-queryfile request.tsq] -in response.tsr [-token_in] ...", NULL, }; int ts_main(int argc, char **argv) { CONF *conf = NULL; const char *CAfile = NULL, *prog; char *untrusted = NULL; const char *configfile = default_config_file, *engine = NULL; const char *section = NULL, *digestname = NULL; char **helpp; char *password = NULL; char *data = NULL, *digest = NULL, *policy = NULL; char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; char *CAstore = NULL; EVP_MD *md = NULL; OPTION_CHOICE o, mode = OPT_ERR; int ret = 1, no_nonce = 0, cert = 0, text = 0; int vpmtouched = 0; X509_VERIFY_PARAM *vpm = NULL; /* Input is ContentInfo instead of TimeStampResp. */ int token_in = 0; /* Output is ContentInfo instead of TimeStampResp. */ int token_out = 0; if ((vpm = X509_VERIFY_PARAM_new()) == NULL) goto end; opt_set_unknown_name("digest"); prog = opt_init(argc, argv, ts_options); while ((o = opt_next()) != OPT_EOF) { switch (o) { case OPT_EOF: case OPT_ERR: opthelp: BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); goto end; case OPT_HELP: opt_help(ts_options); for (helpp = opt_helplist; *helpp; ++helpp) BIO_printf(bio_err, "%s\n", *helpp); ret = 0; goto end; case OPT_CONFIG: configfile = opt_arg(); break; case OPT_SECTION: section = opt_arg(); break; case OPT_QUERY: case OPT_REPLY: case OPT_VERIFY: if (mode != OPT_ERR) { BIO_printf(bio_err, "%s: Must give only one of -query, -reply, or -verify\n", prog); goto opthelp; } mode = o; break; case OPT_DATA: data = opt_arg(); break; case OPT_DIGEST: digest = opt_arg(); break; case OPT_R_CASES: if (!opt_rand(o)) goto end; break; case OPT_PROV_CASES: if (!opt_provider(o)) goto end; break; case OPT_TSPOLICY: policy = opt_arg(); break; case OPT_NO_NONCE: no_nonce = 1; break; case OPT_CERT: cert = 1; break; case OPT_IN: in = opt_arg(); break; case OPT_TOKEN_IN: token_in = 1; break; case OPT_OUT: out = opt_arg(); break; case OPT_TOKEN_OUT: token_out = 1; break; case OPT_TEXT: text = 1; break; case OPT_QUERYFILE: queryfile = opt_arg(); break; case OPT_PASSIN: passin = opt_arg(); break; case OPT_INKEY: inkey = opt_arg(); break; case OPT_SIGNER: signer = opt_arg(); break; case OPT_CHAIN: chain = opt_arg(); break; case OPT_CAPATH: CApath = opt_arg(); break; case OPT_CAFILE: CAfile = opt_arg(); break; case OPT_CASTORE: CAstore = opt_arg(); break; case OPT_UNTRUSTED: untrusted = opt_arg(); break; case OPT_ENGINE: engine = opt_arg(); break; case OPT_MD: digestname = opt_unknown(); break; case OPT_V_CASES: if (!opt_verify(o, vpm)) goto end; vpmtouched++; break; } } /* No extra arguments. */ if (!opt_check_rest_arg(NULL)) goto opthelp; if (mode == OPT_ERR) { BIO_printf(bio_err, "%s: Must give one of -query, -reply, or -verify\n", prog); goto opthelp; } if (!app_RAND_load()) goto end; if (!opt_md(digestname, &md)) goto opthelp; if (mode == OPT_REPLY && passin && !app_passwd(passin, NULL, &password, NULL)) { BIO_printf(bio_err, "Error getting password.\n"); goto end; } if ((conf = load_config_file(configfile)) == NULL) goto end; if (configfile != default_config_file && !app_load_modules(conf)) goto end; /* Check parameter consistency and execute the appropriate function. */ if (mode == OPT_QUERY) { if (vpmtouched) goto opthelp; if ((data != NULL) && (digest != NULL)) goto opthelp; ret = !query_command(data, digest, md, policy, no_nonce, cert, in, out, text); } else if (mode == OPT_REPLY) { if (vpmtouched) goto opthelp; if ((in != NULL) && (queryfile != NULL)) goto opthelp; if (in == NULL) { if ((conf == NULL) || (token_in != 0)) goto opthelp; } ret = !reply_command(conf, section, engine, queryfile, password, inkey, md, signer, chain, policy, in, token_in, out, token_out, text); } else if (mode == OPT_VERIFY) { if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) goto opthelp; ret = !verify_command(data, digest, queryfile, in, token_in, CApath, CAfile, CAstore, untrusted, vpmtouched ? vpm : NULL); } else { goto opthelp; } end: X509_VERIFY_PARAM_free(vpm); EVP_MD_free(md); NCONF_free(conf); OPENSSL_free(password); return ret; } /* * Configuration file-related function definitions. */ static ASN1_OBJECT *txt2obj(const char *oid) { ASN1_OBJECT *oid_obj = NULL; if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL) BIO_printf(bio_err, "cannot convert %s to OID\n", oid); return oid_obj; } static CONF *load_config_file(const char *configfile) { CONF *conf = app_load_config(configfile); if (conf != NULL) { const char *p; BIO_printf(bio_err, "Using configuration from %s\n", configfile); p = NCONF_get_string(conf, NULL, ENV_OID_FILE); if (p != NULL) { BIO *oid_bio = BIO_new_file(p, "r"); if (!oid_bio) ERR_print_errors(bio_err); else { OBJ_create_objects(oid_bio); BIO_free_all(oid_bio); } } else ERR_clear_error(); if (!add_oid_section(conf)) ERR_print_errors(bio_err); } return conf; } /* * Query-related method definitions. */ static int query_command(const char *data, const char *digest, const EVP_MD *md, const char *policy, int no_nonce, int cert, const char *in, const char *out, int text) { int ret = 0; TS_REQ *query = NULL; BIO *in_bio = NULL; BIO *data_bio = NULL; BIO *out_bio = NULL; /* Build query object. */ if (in != NULL) { if ((in_bio = bio_open_default(in, 'r', FORMAT_ASN1)) == NULL) goto end; query = d2i_TS_REQ_bio(in_bio, NULL); } else { if (digest == NULL && (data_bio = bio_open_default(data, 'r', FORMAT_ASN1)) == NULL) goto end; query = create_query(data_bio, digest, md, policy, no_nonce, cert); } if (query == NULL) goto end; if (text) { if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) goto end; if (!TS_REQ_print_bio(out_bio, query)) goto end; } else { if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) goto end; if (!i2d_TS_REQ_bio(out_bio, query)) goto end; } ret = 1; end: ERR_print_errors(bio_err); BIO_free_all(in_bio); BIO_free_all(data_bio); BIO_free_all(out_bio); TS_REQ_free(query); return ret; } static TS_REQ *create_query(BIO *data_bio, const char *digest, const EVP_MD *md, const char *policy, int no_nonce, int cert) { int ret = 0; TS_REQ *ts_req = NULL; int len; TS_MSG_IMPRINT *msg_imprint = NULL; X509_ALGOR *algo = NULL; unsigned char *data = NULL; ASN1_OBJECT *policy_obj = NULL; ASN1_INTEGER *nonce_asn1 = NULL; if (md == NULL && (md = EVP_get_digestbyname("sha256")) == NULL) goto err; if ((ts_req = TS_REQ_new()) == NULL) goto err; if (!TS_REQ_set_version(ts_req, 1)) goto err; if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL) goto err; if ((algo = X509_ALGOR_new()) == NULL) goto err; if ((algo->algorithm = OBJ_nid2obj(EVP_MD_get_type(md))) == NULL) goto err; if ((algo->parameter = ASN1_TYPE_new()) == NULL) goto err; algo->parameter->type = V_ASN1_NULL; if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) goto err; if ((len = create_digest(data_bio, digest, md, &data)) == 0) goto err; if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) goto err; if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) goto err; if (policy && (policy_obj = txt2obj(policy)) == NULL) goto err; if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) goto err; /* Setting nonce if requested. */ if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL) goto err; if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) goto err; if (!TS_REQ_set_cert_req(ts_req, cert)) goto err; ret = 1; err: if (!ret) { TS_REQ_free(ts_req); ts_req = NULL; BIO_printf(bio_err, "could not create query\n"); ERR_print_errors(bio_err); } TS_MSG_IMPRINT_free(msg_imprint); X509_ALGOR_free(algo); OPENSSL_free(data); ASN1_OBJECT_free(policy_obj); ASN1_INTEGER_free(nonce_asn1); return ts_req; } static int create_digest(BIO *input, const char *digest, const EVP_MD *md, unsigned char **md_value) { int md_value_len; int rv = 0; EVP_MD_CTX *md_ctx = NULL; md_value_len = EVP_MD_get_size(md); if (md_value_len < 0) return 0; if (input != NULL) { unsigned char buffer[4096]; int length; md_ctx = EVP_MD_CTX_new(); if (md_ctx == NULL) return 0; *md_value = app_malloc(md_value_len, "digest buffer"); if (!EVP_DigestInit(md_ctx, md)) goto err; while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { if (!EVP_DigestUpdate(md_ctx, buffer, length)) goto err; } if (!EVP_DigestFinal(md_ctx, *md_value, NULL)) goto err; md_value_len = EVP_MD_get_size(md); } else { long digest_len; *md_value = OPENSSL_hexstr2buf(digest, &digest_len); if (*md_value == NULL || md_value_len != digest_len) { OPENSSL_free(*md_value); *md_value = NULL; BIO_printf(bio_err, "bad digest, %d bytes " "must be specified\n", md_value_len); return 0; } } rv = md_value_len; err: EVP_MD_CTX_free(md_ctx); return rv; } static ASN1_INTEGER *create_nonce(int bits) { unsigned char buf[20]; ASN1_INTEGER *nonce = NULL; int len = (bits - 1) / 8 + 1; int i; if (len > (int)sizeof(buf)) goto err; if (RAND_bytes(buf, len) <= 0) goto err; /* Find the first non-zero byte and creating ASN1_INTEGER object. */ for (i = 0; i < len && !buf[i]; ++i) continue; if ((nonce = ASN1_INTEGER_new()) == NULL) goto err; OPENSSL_free(nonce->data); nonce->length = len - i; nonce->data = app_malloc(nonce->length + 1, "nonce buffer"); memcpy(nonce->data, buf + i, nonce->length); return nonce; err: BIO_printf(bio_err, "could not create nonce\n"); ASN1_INTEGER_free(nonce); return NULL; } /* * Reply-related method definitions. */ static int reply_command(CONF *conf, const char *section, const char *engine, const char *queryfile, const char *passin, const char *inkey, const EVP_MD *md, const char *signer, const char *chain, const char *policy, const char *in, int token_in, const char *out, int token_out, int text) { int ret = 0; TS_RESP *response = NULL; BIO *in_bio = NULL; BIO *query_bio = NULL; BIO *inkey_bio = NULL; BIO *signer_bio = NULL; BIO *out_bio = NULL; if (in != NULL) { if ((in_bio = BIO_new_file(in, "rb")) == NULL) goto end; if (token_in) { response = read_PKCS7(in_bio); } else { response = d2i_TS_RESP_bio(in_bio, NULL); } } else { response = create_response(conf, section, engine, queryfile, passin, inkey, md, signer, chain, policy); if (response != NULL) BIO_printf(bio_err, "Response has been generated.\n"); else BIO_printf(bio_err, "Response is not generated.\n"); } if (response == NULL) goto end; /* Write response. */ if (text) { if ((out_bio = bio_open_default(out, 'w', FORMAT_TEXT)) == NULL) goto end; if (token_out) { TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); if (!TS_TST_INFO_print_bio(out_bio, tst_info)) goto end; } else { if (!TS_RESP_print_bio(out_bio, response)) goto end; } } else { if ((out_bio = bio_open_default(out, 'w', FORMAT_ASN1)) == NULL) goto end; if (token_out) { PKCS7 *token = TS_RESP_get_token(response); if (!i2d_PKCS7_bio(out_bio, token)) goto end; } else { if (!i2d_TS_RESP_bio(out_bio, response)) goto end; } } ret = 1; end: ERR_print_errors(bio_err); BIO_free_all(in_bio); BIO_free_all(query_bio); BIO_free_all(inkey_bio); BIO_free_all(signer_bio); BIO_free_all(out_bio); TS_RESP_free(response); return ret; } /* Reads a PKCS7 token and adds default 'granted' status info to it. */ static TS_RESP *read_PKCS7(BIO *in_bio) { int ret = 0; PKCS7 *token = NULL; TS_TST_INFO *tst_info = NULL; TS_RESP *resp = NULL; TS_STATUS_INFO *si = NULL; if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) goto end; if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL) goto end; if ((resp = TS_RESP_new()) == NULL) goto end; if ((si = TS_STATUS_INFO_new()) == NULL) goto end; if (!TS_STATUS_INFO_set_status(si, TS_STATUS_GRANTED)) goto end; if (!TS_RESP_set_status_info(resp, si)) goto end; TS_RESP_set_tst_info(resp, token, tst_info); token = NULL; /* Ownership is lost. */ tst_info = NULL; /* Ownership is lost. */ ret = 1; end: PKCS7_free(token); TS_TST_INFO_free(tst_info); if (!ret) { TS_RESP_free(resp); resp = NULL; } TS_STATUS_INFO_free(si); return resp; } static TS_RESP *create_response(CONF *conf, const char *section, const char *engine, const char *queryfile, const char *passin, const char *inkey, const EVP_MD *md, const char *signer, const char *chain, const char *policy) { int ret = 0; TS_RESP *response = NULL; BIO *query_bio = NULL; TS_RESP_CTX *resp_ctx = NULL; if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL) goto end; if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL) goto end; if ((resp_ctx = TS_RESP_CTX_new()) == NULL) goto end; if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) goto end; #ifndef OPENSSL_NO_ENGINE if (!TS_CONF_set_crypto_device(conf, section, engine)) goto end; #endif if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) goto end; if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) goto end; if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) goto end; if (md) { if (!TS_RESP_CTX_set_signer_digest(resp_ctx, md)) goto end; } else if (!TS_CONF_set_signer_digest(conf, section, NULL, resp_ctx)) { goto end; } if (!TS_CONF_set_ess_cert_id_digest(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) goto end; if (!TS_CONF_set_policies(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_digests(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_ordering(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) goto end; if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) goto end; if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL) goto end; ret = 1; end: if (!ret) { TS_RESP_free(response); response = NULL; } TS_RESP_CTX_free(resp_ctx); BIO_free_all(query_bio); return response; } static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data) { const char *serial_file = (const char *)data; ASN1_INTEGER *serial = next_serial(serial_file); if (serial == NULL) { TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, "Error during serial number " "generation."); TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE); } else { save_ts_serial(serial_file, serial); } return serial; } static ASN1_INTEGER *next_serial(const char *serialfile) { int ret = 0; BIO *in = NULL; ASN1_INTEGER *serial = NULL; BIGNUM *bn = NULL; if ((serial = ASN1_INTEGER_new()) == NULL) goto err; if ((in = BIO_new_file(serialfile, "r")) == NULL) { ERR_clear_error(); BIO_printf(bio_err, "Warning: could not open file %s for " "reading, using serial number: 1\n", serialfile); if (!ASN1_INTEGER_set(serial, 1)) goto err; } else { char buf[1024]; if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) { BIO_printf(bio_err, "unable to load number from %s\n", serialfile); goto err; } if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL) goto err; ASN1_INTEGER_free(serial); serial = NULL; if (!BN_add_word(bn, 1)) goto err; if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) goto err; } ret = 1; err: if (!ret) { ASN1_INTEGER_free(serial); serial = NULL; } BIO_free_all(in); BN_free(bn); return serial; } static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) { int ret = 0; BIO *out = NULL; if ((out = BIO_new_file(serialfile, "w")) == NULL) goto err; if (i2a_ASN1_INTEGER(out, serial) <= 0) goto err; if (BIO_puts(out, "\n") <= 0) goto err; ret = 1; err: if (!ret) BIO_printf(bio_err, "could not save serial number to %s\n", serialfile); BIO_free_all(out); return ret; } /* * Verify-related method definitions. */ static int verify_command(const char *data, const char *digest, const char *queryfile, const char *in, int token_in, const char *CApath, const char *CAfile, const char *CAstore, char *untrusted, X509_VERIFY_PARAM *vpm) { BIO *in_bio = NULL; PKCS7 *token = NULL; TS_RESP *response = NULL; TS_VERIFY_CTX *verify_ctx = NULL; int ret = 0; if ((in_bio = BIO_new_file(in, "rb")) == NULL) goto end; if (token_in) { if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL) goto end; } else { if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL) goto end; } if ((verify_ctx = create_verify_ctx(data, digest, queryfile, CApath, CAfile, CAstore, untrusted, vpm)) == NULL) goto end; ret = token_in ? TS_RESP_verify_token(verify_ctx, token) : TS_RESP_verify_response(verify_ctx, response); end: printf("Verification: "); if (ret) printf("OK\n"); else { printf("FAILED\n"); ERR_print_errors(bio_err); } BIO_free_all(in_bio); PKCS7_free(token); TS_RESP_free(response); TS_VERIFY_CTX_free(verify_ctx); return ret; } static TS_VERIFY_CTX *create_verify_ctx(const char *data, const char *digest, const char *queryfile, const char *CApath, const char *CAfile, const char *CAstore, char *untrusted, X509_VERIFY_PARAM *vpm) { TS_VERIFY_CTX *ctx = NULL; STACK_OF(X509) *certs; BIO *input = NULL; TS_REQ *request = NULL; int ret = 0; int f = 0; if (data != NULL || digest != NULL) { if ((ctx = TS_VERIFY_CTX_new()) == NULL) goto err; f = TS_VFY_VERSION | TS_VFY_SIGNER; if (data != NULL) { BIO *out = NULL; f |= TS_VFY_DATA; if ((out = BIO_new_file(data, "rb")) == NULL) goto err; if (TS_VERIFY_CTX_set_data(ctx, out) == NULL) { BIO_free_all(out); goto err; } } else if (digest != NULL) { long imprint_len; unsigned char *hexstr = OPENSSL_hexstr2buf(digest, &imprint_len); f |= TS_VFY_IMPRINT; if (TS_VERIFY_CTX_set_imprint(ctx, hexstr, imprint_len) == NULL) { BIO_printf(bio_err, "invalid digest string\n"); goto err; } } } else if (queryfile != NULL) { if ((input = BIO_new_file(queryfile, "rb")) == NULL) goto err; if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL) goto err; if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL) goto err; } else { return NULL; } /* Add the signature verification flag and arguments. */ TS_VERIFY_CTX_add_flags(ctx, f | TS_VFY_SIGNATURE); /* Initialising the X509_STORE object. */ if (TS_VERIFY_CTX_set_store(ctx, create_cert_store(CApath, CAfile, CAstore, vpm)) == NULL) goto err; /* Loading any extra untrusted certificates. */ if (untrusted != NULL) { certs = load_certs_multifile(untrusted, NULL, "extra untrusted certs", vpm); if (certs == NULL || TS_VERIFY_CTX_set_certs(ctx, certs) == NULL) goto err; } ret = 1; err: if (!ret) { TS_VERIFY_CTX_free(ctx); ctx = NULL; } BIO_free_all(input); TS_REQ_free(request); return ctx; } static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, const char *CAstore, X509_VERIFY_PARAM *vpm) { X509_STORE *cert_ctx = NULL; X509_LOOKUP *lookup = NULL; OSSL_LIB_CTX *libctx = app_get0_libctx(); const char *propq = app_get0_propq(); cert_ctx = X509_STORE_new(); if (cert_ctx == NULL) { BIO_printf(bio_err, "memory allocation failure\n"); return NULL; } X509_STORE_set_verify_cb(cert_ctx, verify_cb); if (CApath != NULL) { lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir()); if (lookup == NULL) { BIO_printf(bio_err, "memory allocation failure\n"); goto err; } if (X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM) <= 0) { BIO_printf(bio_err, "Error loading directory %s\n", CApath); goto err; } } if (CAfile != NULL) { lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); if (lookup == NULL) { BIO_printf(bio_err, "memory allocation failure\n"); goto err; } if (X509_LOOKUP_load_file_ex(lookup, CAfile, X509_FILETYPE_PEM, libctx, propq) <= 0) { BIO_printf(bio_err, "Error loading file %s\n", CAfile); goto err; } } if (CAstore != NULL) { lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_store()); if (lookup == NULL) { BIO_printf(bio_err, "memory allocation failure\n"); goto err; } if (X509_LOOKUP_load_store_ex(lookup, CAstore, libctx, propq) <= 0) { BIO_printf(bio_err, "Error loading store URI %s\n", CAstore); goto err; } } if (vpm != NULL) X509_STORE_set1_param(cert_ctx, vpm); return cert_ctx; err: X509_STORE_free(cert_ctx); return NULL; } static int verify_cb(int ok, X509_STORE_CTX *ctx) { return ok; }