diff options
Diffstat (limited to 'openssl-1.1.0h/apps/ts.c')
| -rw-r--r-- | openssl-1.1.0h/apps/ts.c | 995 |
1 files changed, 995 insertions, 0 deletions
diff --git a/openssl-1.1.0h/apps/ts.c b/openssl-1.1.0h/apps/ts.c new file mode 100644 index 0000000..0e07c08 --- /dev/null +++ b/openssl-1.1.0h/apps/ts.c @@ -0,0 +1,995 @@ +/* + * Copyright 2006-2016 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 + */ + +#include <openssl/opensslconf.h> +#ifdef OPENSSL_NO_TS +NON_EMPTY_TRANSLATION_UNIT +#else +# include <stdio.h> +# include <stdlib.h> +# include <string.h> +# include "apps.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 *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 *untrusted, + X509_VERIFY_PARAM *vpm); +static X509_STORE *create_cert_store(const char *CApath, const char *CAfile, + X509_VERIFY_PARAM *vpm); +static int verify_cb(int ok, X509_STORE_CTX *ctx); + +typedef enum OPTION_choice { + OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, + OPT_ENGINE, OPT_CONFIG, OPT_SECTION, OPT_QUERY, OPT_DATA, + OPT_DIGEST, OPT_RAND, 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_UNTRUSTED, + OPT_MD, OPT_V_ENUM +} OPTION_CHOICE; + +OPTIONS ts_options[] = { + {"help", OPT_HELP, '-', "Display this summary"}, + {"config", OPT_CONFIG, '<', "Configuration file"}, + {"section", OPT_SECTION, 's', "Section to use within config file"}, + {"query", OPT_QUERY, '-', "Generate a TS query"}, + {"data", OPT_DATA, '<', "File to hash"}, + {"digest", OPT_DIGEST, 's', "Digest (as a hex string)"}, + {"rand", OPT_RAND, 's', + "Load the file(s) into the random number generator"}, + {"tspolicy", OPT_TSPOLICY, 's', "Policy OID to use"}, + {"no_nonce", OPT_NO_NONCE, '-', "Do not include a nonce"}, + {"cert", OPT_CERT, '-', "Put cert request into query"}, + {"in", OPT_IN, '<', "Input file"}, + {"token_in", OPT_TOKEN_IN, '-', "Input is a PKCS#7 file"}, + {"out", OPT_OUT, '>', "Output file"}, + {"token_out", OPT_TOKEN_OUT, '-', "Output is a PKCS#7 file"}, + {"text", OPT_TEXT, '-', "Output text (not DER)"}, + {"reply", OPT_REPLY, '-', "Generate a TS reply"}, + {"queryfile", OPT_QUERYFILE, '<', "File containing a TS query"}, + {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, + {"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"}, + {"verify", OPT_VERIFY, '-', "Verify a TS response"}, + {"CApath", OPT_CAPATH, '/', "Path to trusted CA files"}, + {"CAfile", OPT_CAFILE, '<', "File with trusted CA certs"}, + {"untrusted", OPT_UNTRUSTED, '<', "File with untrusted certs"}, + {"", OPT_MD, '-', "Any supported digest"}, +# ifndef OPENSSL_NO_ENGINE + {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, +# endif + {OPT_HELP_STR, 1, '-', "\nOptions specific to 'ts -verify': \n"}, + OPT_V_OPTIONS, + {OPT_HELP_STR, 1, '-', "\n"}, + {NULL} +}; + +/* + * This command is so complex, special help is needed. + */ +static char* opt_helplist[] = { + "Typical uses:", + "ts -query [-rand file...] [-config file] [-data file]", + " [-digest hexstring] [-tspolicy oid] [-no_nonce] [-cert]", + " [-in file] [-out file] [-text]", + " or", + "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 + " or", + "ts -verify -CApath dir -CAfile file.pem -untrusted file.pem", + " [-data file] [-digest hexstring]", + " [-queryfile file] -in file [-token_in]", + " [[options specific to 'ts -verify']]", + NULL, +}; + +int ts_main(int argc, char **argv) +{ + CONF *conf = NULL; + const char *CAfile = NULL, *untrusted = NULL, *prog; + const char *configfile = default_config_file, *engine = NULL; + const char *section = NULL; + char **helpp; + char *password = NULL; + char *data = NULL, *digest = NULL, *rnd = NULL, *policy = NULL; + char *in = NULL, *out = NULL, *queryfile = NULL, *passin = NULL; + char *inkey = NULL, *signer = NULL, *chain = NULL, *CApath = NULL; + const 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; + + 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) + goto opthelp; + mode = o; + break; + case OPT_DATA: + data = opt_arg(); + break; + case OPT_DIGEST: + digest = opt_arg(); + break; + case OPT_RAND: + rnd = opt_arg(); + 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_UNTRUSTED: + untrusted = opt_arg(); + break; + case OPT_ENGINE: + engine = opt_arg(); + break; + case OPT_MD: + if (!opt_md(opt_unknown(), &md)) + goto opthelp; + break; + case OPT_V_CASES: + if (!opt_verify(o, vpm)) + goto end; + vpmtouched++; + break; + } + } + if (mode == OPT_ERR || opt_num_rest() != 0) + goto opthelp; + + /* Seed the random number generator if it is going to be used. */ + if (mode == OPT_QUERY && !no_nonce) { + if (!app_RAND_load_file(NULL, 1) && rnd == NULL) + BIO_printf(bio_err, "warning, not much extra random " + "data, consider using the -rand option\n"); + if (rnd != NULL) + BIO_printf(bio_err, "%ld semi-random bytes loaded\n", + app_RAND_load_files(rnd)); + } + + if (mode == OPT_REPLY && passin && + !app_passwd(passin, NULL, &password, NULL)) { + BIO_printf(bio_err, "Error getting password.\n"); + goto end; + } + + conf = load_config_file(configfile); + if (configfile != default_config_file && !app_load_modules(conf)) + goto end; + + /* Check parameter consistency and execute the appropriate function. */ + switch (mode) { + default: + case OPT_ERR: + goto opthelp; + case 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); + break; + case 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); + break; + case OPT_VERIFY: + if ((in == NULL) || !EXACTLY_ONE(queryfile, data, digest)) + goto opthelp; + ret = !verify_command(data, digest, queryfile, in, token_in, + CApath, CAfile, untrusted, + vpmtouched ? vpm : NULL); + } + + end: + X509_VERIFY_PARAM_free(vpm); + app_RAND_write_file(NULL); + 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("sha1")) == 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_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_size(md); + if (md_value_len < 0) + return 0; + + if (input) { + 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_size(md); + } else { + long digest_len; + *md_value = OPENSSL_hexstr2buf(digest, &digest_len); + if (!*md_value || 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) + 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_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) { + 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 *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, 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 *untrusted, + X509_VERIFY_PARAM *vpm) +{ + TS_VERIFY_CTX *ctx = NULL; + 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, vpm)) + == NULL) + goto err; + + /* Loading untrusted certificates. */ + if (untrusted + && TS_VERIFY_CTS_set_certs(ctx, TS_CONF_load_certs(untrusted)) == 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, + X509_VERIFY_PARAM *vpm) +{ + X509_STORE *cert_ctx = NULL; + X509_LOOKUP *lookup = NULL; + int i; + + cert_ctx = X509_STORE_new(); + 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; + } + i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM); + if (!i) { + 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; + } + i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM); + if (!i) { + BIO_printf(bio_err, "Error loading file %s\n", CAfile); + 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; +} +#endif /* ndef OPENSSL_NO_TS */ |