| /* apps/ts.c */ |
| /* |
| * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project |
| * 2002. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 2001 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| |
| #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> |
| |
| #undef PROG |
| #define PROG ts_main |
| |
| /* Length of the nonce of the request in bits (must be a multiple of 8). */ |
| #define NONCE_LENGTH 64 |
| |
| /* Macro definitions for the configuration file. */ |
| #define ENV_OID_FILE "oid_file" |
| |
| /* Local function declarations. */ |
| |
| 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, char *digest, |
| const EVP_MD *md, const char *policy, int no_nonce, |
| int cert, const char *in, const char *out, int text); |
| static BIO *BIO_open_with_default(const char *file, const char *mode, |
| FILE *default_fp); |
| static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md, |
| const char *policy, int no_nonce, int cert); |
| static int create_digest(BIO *input, 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, char *section, char *engine, |
| char *queryfile, char *passin, char *inkey, |
| char *signer, char *chain, const char *policy, |
| char *in, int token_in, 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, char *engine, |
| char *queryfile, char *passin, char *inkey, |
| char *signer, char *chain, |
| const char *policy); |
| static ASN1_INTEGER *MS_CALLBACK 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(char *data, char *digest, char *queryfile, |
| char *in, int token_in, |
| char *ca_path, char *ca_file, char *untrusted); |
| static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest, |
| char *queryfile, |
| char *ca_path, char *ca_file, |
| char *untrusted); |
| static X509_STORE *create_cert_store(char *ca_path, char *ca_file); |
| static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx); |
| |
| /* Main function definition. */ |
| int MAIN(int, char **); |
| |
| int MAIN(int argc, char **argv) |
| { |
| int ret = 1; |
| char *configfile = NULL; |
| char *section = NULL; |
| CONF *conf = NULL; |
| enum mode { |
| CMD_NONE, CMD_QUERY, CMD_REPLY, CMD_VERIFY |
| } mode = CMD_NONE; |
| char *data = NULL; |
| char *digest = NULL; |
| const EVP_MD *md = NULL; |
| char *rnd = NULL; |
| char *policy = NULL; |
| int no_nonce = 0; |
| int cert = 0; |
| char *in = NULL; |
| char *out = NULL; |
| int text = 0; |
| char *queryfile = NULL; |
| char *passin = NULL; /* Password source. */ |
| char *password = NULL; /* Password itself. */ |
| char *inkey = NULL; |
| char *signer = NULL; |
| char *chain = NULL; |
| char *ca_path = NULL; |
| char *ca_file = NULL; |
| char *untrusted = NULL; |
| char *engine = NULL; |
| /* Input is ContentInfo instead of TimeStampResp. */ |
| int token_in = 0; |
| /* Output is ContentInfo instead of TimeStampResp. */ |
| int token_out = 0; |
| int free_bio_err = 0; |
| |
| ERR_load_crypto_strings(); |
| apps_startup(); |
| |
| if (bio_err == NULL && (bio_err = BIO_new(BIO_s_file())) != NULL) { |
| free_bio_err = 1; |
| BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); |
| } |
| |
| if (!load_config(bio_err, NULL)) |
| goto cleanup; |
| |
| for (argc--, argv++; argc > 0; argc--, argv++) { |
| if (strcmp(*argv, "-config") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| configfile = *++argv; |
| } else if (strcmp(*argv, "-section") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| section = *++argv; |
| } else if (strcmp(*argv, "-query") == 0) { |
| if (mode != CMD_NONE) |
| goto usage; |
| mode = CMD_QUERY; |
| } else if (strcmp(*argv, "-data") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| data = *++argv; |
| } else if (strcmp(*argv, "-digest") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| digest = *++argv; |
| } else if (strcmp(*argv, "-rand") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| rnd = *++argv; |
| } else if (strcmp(*argv, "-policy") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| policy = *++argv; |
| } else if (strcmp(*argv, "-no_nonce") == 0) { |
| no_nonce = 1; |
| } else if (strcmp(*argv, "-cert") == 0) { |
| cert = 1; |
| } else if (strcmp(*argv, "-in") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| in = *++argv; |
| } else if (strcmp(*argv, "-token_in") == 0) { |
| token_in = 1; |
| } else if (strcmp(*argv, "-out") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| out = *++argv; |
| } else if (strcmp(*argv, "-token_out") == 0) { |
| token_out = 1; |
| } else if (strcmp(*argv, "-text") == 0) { |
| text = 1; |
| } else if (strcmp(*argv, "-reply") == 0) { |
| if (mode != CMD_NONE) |
| goto usage; |
| mode = CMD_REPLY; |
| } else if (strcmp(*argv, "-queryfile") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| queryfile = *++argv; |
| } else if (strcmp(*argv, "-passin") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| passin = *++argv; |
| } else if (strcmp(*argv, "-inkey") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| inkey = *++argv; |
| } else if (strcmp(*argv, "-signer") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| signer = *++argv; |
| } else if (strcmp(*argv, "-chain") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| chain = *++argv; |
| } else if (strcmp(*argv, "-verify") == 0) { |
| if (mode != CMD_NONE) |
| goto usage; |
| mode = CMD_VERIFY; |
| } else if (strcmp(*argv, "-CApath") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| ca_path = *++argv; |
| } else if (strcmp(*argv, "-CAfile") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| ca_file = *++argv; |
| } else if (strcmp(*argv, "-untrusted") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| untrusted = *++argv; |
| } else if (strcmp(*argv, "-engine") == 0) { |
| if (argc-- < 1) |
| goto usage; |
| engine = *++argv; |
| } else if ((md = EVP_get_digestbyname(*argv + 1)) != NULL) { |
| /* empty. */ |
| } else |
| goto usage; |
| } |
| |
| /* Seed the random number generator if it is going to be used. */ |
| if (mode == CMD_QUERY && !no_nonce) { |
| if (!app_RAND_load_file(NULL, bio_err, 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)); |
| } |
| |
| /* Get the password if required. */ |
| if (mode == CMD_REPLY && passin && |
| !app_passwd(bio_err, passin, NULL, &password, NULL)) { |
| BIO_printf(bio_err, "Error getting password.\n"); |
| goto cleanup; |
| } |
| |
| /* |
| * Check consistency of parameters and execute the appropriate function. |
| */ |
| switch (mode) { |
| case CMD_NONE: |
| goto usage; |
| case CMD_QUERY: |
| /* |
| * Data file and message imprint cannot be specified at the same |
| * time. |
| */ |
| ret = data != NULL && digest != NULL; |
| if (ret) |
| goto usage; |
| /* Load the config file for possible policy OIDs. */ |
| conf = load_config_file(configfile); |
| ret = !query_command(data, digest, md, policy, no_nonce, cert, |
| in, out, text); |
| break; |
| case CMD_REPLY: |
| conf = load_config_file(configfile); |
| if (in == NULL) { |
| ret = !(queryfile != NULL && conf != NULL && !token_in); |
| if (ret) |
| goto usage; |
| } else { |
| /* 'in' and 'queryfile' are exclusive. */ |
| ret = !(queryfile == NULL); |
| if (ret) |
| goto usage; |
| } |
| |
| ret = !reply_command(conf, section, engine, queryfile, |
| password, inkey, signer, chain, policy, |
| in, token_in, out, token_out, text); |
| break; |
| case CMD_VERIFY: |
| ret = !(((queryfile && !data && !digest) |
| || (!queryfile && data && !digest) |
| || (!queryfile && !data && digest)) |
| && in != NULL); |
| if (ret) |
| goto usage; |
| |
| ret = !verify_command(data, digest, queryfile, in, token_in, |
| ca_path, ca_file, untrusted); |
| } |
| |
| goto cleanup; |
| |
| usage: |
| BIO_printf(bio_err, "usage:\n" |
| "ts -query [-rand file%cfile%c...] [-config configfile] " |
| "[-data file_to_hash] [-digest digest_bytes]" |
| "[-md2|-md4|-md5|-sha|-sha1|-mdc2|-ripemd160] " |
| "[-policy object_id] [-no_nonce] [-cert] " |
| "[-in request.tsq] [-out request.tsq] [-text]\n", |
| LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
| BIO_printf(bio_err, "or\n" |
| "ts -reply [-config configfile] [-section tsa_section] " |
| "[-queryfile request.tsq] [-passin password] " |
| "[-signer tsa_cert.pem] [-inkey private_key.pem] " |
| "[-chain certs_file.pem] [-policy object_id] " |
| "[-in response.tsr] [-token_in] " |
| "[-out response.tsr] [-token_out] [-text] [-engine id]\n"); |
| BIO_printf(bio_err, "or\n" |
| "ts -verify [-data file_to_hash] [-digest digest_bytes] " |
| "[-queryfile request.tsq] " |
| "-in response.tsr [-token_in] " |
| "-CApath ca_path -CAfile ca_file.pem " |
| "-untrusted cert_file.pem\n"); |
| cleanup: |
| /* Clean up. */ |
| app_RAND_write_file(NULL, bio_err); |
| NCONF_free(conf); |
| OPENSSL_free(password); |
| OBJ_cleanup(); |
| if (free_bio_err) { |
| BIO_free_all(bio_err); |
| bio_err = NULL; |
| } |
| |
| OPENSSL_EXIT(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))) |
| BIO_printf(bio_err, "cannot convert %s to OID\n", oid); |
| |
| return oid_obj; |
| } |
| |
| static CONF *load_config_file(const char *configfile) |
| { |
| CONF *conf = NULL; |
| long errorline = -1; |
| |
| if (!configfile) |
| configfile = getenv("OPENSSL_CONF"); |
| if (!configfile) |
| configfile = getenv("SSLEAY_CONF"); |
| |
| if (configfile && |
| (!(conf = NCONF_new(NULL)) || |
| NCONF_load(conf, configfile, &errorline) <= 0)) { |
| if (errorline <= 0) |
| BIO_printf(bio_err, "error loading the config file " |
| "'%s'\n", configfile); |
| else |
| BIO_printf(bio_err, "error on line %ld of config file " |
| "'%s'\n", errorline, 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(bio_err, conf)) |
| ERR_print_errors(bio_err); |
| } |
| return conf; |
| } |
| |
| /* |
| * Query-related method definitions. |
| */ |
| |
| static int query_command(const char *data, 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 either from file or from scratch. */ |
| if (in != NULL) { |
| if ((in_bio = BIO_new_file(in, "rb")) == NULL) |
| goto end; |
| query = d2i_TS_REQ_bio(in_bio, NULL); |
| } else { |
| /* |
| * Open the file if no explicit digest bytes were specified. |
| */ |
| if (!digest && !(data_bio = BIO_open_with_default(data, "rb", stdin))) |
| goto end; |
| /* Creating the query object. */ |
| query = create_query(data_bio, digest, md, policy, no_nonce, cert); |
| /* Saving the random number generator state. */ |
| } |
| if (query == NULL) |
| goto end; |
| |
| /* Write query either in ASN.1 or in text format. */ |
| if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL) |
| goto end; |
| if (text) { |
| /* Text output. */ |
| if (!TS_REQ_print_bio(out_bio, query)) |
| goto end; |
| } else { |
| /* ASN.1 output. */ |
| if (!i2d_TS_REQ_bio(out_bio, query)) |
| goto end; |
| } |
| |
| ret = 1; |
| |
| end: |
| ERR_print_errors(bio_err); |
| |
| /* Clean up. */ |
| BIO_free_all(in_bio); |
| BIO_free_all(data_bio); |
| BIO_free_all(out_bio); |
| TS_REQ_free(query); |
| |
| return ret; |
| } |
| |
| static BIO *BIO_open_with_default(const char *file, const char *mode, |
| FILE *default_fp) |
| { |
| return file == NULL ? BIO_new_fp(default_fp, BIO_NOCLOSE) |
| : BIO_new_file(file, mode); |
| } |
| |
| static TS_REQ *create_query(BIO *data_bio, 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; |
| |
| /* Setting default message digest. */ |
| if (!md && !(md = EVP_get_digestbyname("sha1"))) |
| goto err; |
| |
| /* Creating request object. */ |
| if (!(ts_req = TS_REQ_new())) |
| goto err; |
| |
| /* Setting version. */ |
| if (!TS_REQ_set_version(ts_req, 1)) |
| goto err; |
| |
| /* Creating and adding MSG_IMPRINT object. */ |
| if (!(msg_imprint = TS_MSG_IMPRINT_new())) |
| goto err; |
| |
| /* Adding algorithm. */ |
| if (!(algo = X509_ALGOR_new())) |
| goto err; |
| if (!(algo->algorithm = OBJ_nid2obj(EVP_MD_type(md)))) |
| goto err; |
| if (!(algo->parameter = ASN1_TYPE_new())) |
| goto err; |
| algo->parameter->type = V_ASN1_NULL; |
| if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) |
| goto err; |
| |
| /* Adding message digest. */ |
| 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; |
| |
| /* Setting policy if requested. */ |
| if (policy && !(policy_obj = txt2obj(policy))) |
| 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))) |
| goto err; |
| if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) |
| goto err; |
| |
| /* Setting certificate request flag if requested. */ |
| 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"); |
| } |
| 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, char *digest, const EVP_MD *md, |
| unsigned char **md_value) |
| { |
| int md_value_len; |
| |
| md_value_len = EVP_MD_size(md); |
| if (md_value_len < 0) |
| goto err; |
| if (input) { |
| /* Digest must be computed from an input file. */ |
| EVP_MD_CTX md_ctx; |
| unsigned char buffer[4096]; |
| int length; |
| |
| *md_value = OPENSSL_malloc(md_value_len); |
| if (*md_value == 0) |
| goto err; |
| |
| EVP_DigestInit(&md_ctx, md); |
| while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) { |
| EVP_DigestUpdate(&md_ctx, buffer, length); |
| } |
| EVP_DigestFinal(&md_ctx, *md_value, NULL); |
| } else { |
| /* Digest bytes are specified with digest. */ |
| long digest_len; |
| *md_value = string_to_hex(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); |
| goto err; |
| } |
| } |
| |
| return md_value_len; |
| err: |
| return 0; |
| } |
| |
| static ASN1_INTEGER *create_nonce(int bits) |
| { |
| unsigned char buf[20]; |
| ASN1_INTEGER *nonce = NULL; |
| int len = (bits - 1) / 8 + 1; |
| int i; |
| |
| /* Generating random byte sequence. */ |
| 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) ; |
| if (!(nonce = ASN1_INTEGER_new())) |
| goto err; |
| OPENSSL_free(nonce->data); |
| /* Allocate at least one byte. */ |
| nonce->length = len - i; |
| if (!(nonce->data = OPENSSL_malloc(nonce->length + 1))) |
| goto err; |
| 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, char *section, char *engine, |
| char *queryfile, char *passin, char *inkey, |
| char *signer, char *chain, const char *policy, |
| char *in, int token_in, |
| 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; |
| |
| /* Build response object either from response or query. */ |
| if (in != NULL) { |
| if ((in_bio = BIO_new_file(in, "rb")) == NULL) |
| goto end; |
| if (token_in) { |
| /* |
| * We have a ContentInfo (PKCS7) object, add 'granted' status |
| * info around it. |
| */ |
| response = read_PKCS7(in_bio); |
| } else { |
| /* We have a ready-made TS_RESP object. */ |
| response = d2i_TS_RESP_bio(in_bio, NULL); |
| } |
| } else { |
| response = create_response(conf, section, engine, queryfile, |
| passin, inkey, 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 either in ASN.1 or text format. */ |
| if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL) |
| goto end; |
| if (text) { |
| /* Text output. */ |
| 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 { |
| /* ASN.1 DER output. */ |
| 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); |
| |
| /* Clean up. */ |
| 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; |
| |
| /* Read PKCS7 object and extract the signed time stamp info. */ |
| if (!(token = d2i_PKCS7_bio(in_bio, NULL))) |
| goto end; |
| if (!(tst_info = PKCS7_to_TS_TST_INFO(token))) |
| goto end; |
| |
| /* Creating response object. */ |
| if (!(resp = TS_RESP_new())) |
| goto end; |
| |
| /* Create granted status info. */ |
| if (!(si = TS_STATUS_INFO_new())) |
| goto end; |
| if (!(ASN1_INTEGER_set(si->status, TS_STATUS_GRANTED))) |
| goto end; |
| if (!TS_RESP_set_status_info(resp, si)) |
| goto end; |
| |
| /* Setting encapsulated token. */ |
| 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, char *engine, |
| char *queryfile, char *passin, char *inkey, |
| char *signer, 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"))) |
| goto end; |
| |
| /* Getting TSA configuration section. */ |
| if (!(section = TS_CONF_get_tsa_section(conf, section))) |
| goto end; |
| |
| /* Setting up response generation context. */ |
| if (!(resp_ctx = TS_RESP_CTX_new())) |
| goto end; |
| |
| /* Setting serial number provider callback. */ |
| if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) |
| goto end; |
| #ifndef OPENSSL_NO_ENGINE |
| /* Setting default OpenSSL engine. */ |
| if (!TS_CONF_set_crypto_device(conf, section, engine)) |
| goto end; |
| #endif |
| |
| /* Setting TSA signer certificate. */ |
| if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) |
| goto end; |
| |
| /* Setting TSA signer certificate chain. */ |
| if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) |
| goto end; |
| |
| /* Setting TSA signer private key. */ |
| if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) |
| goto end; |
| |
| /* Setting default policy OID. */ |
| if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) |
| goto end; |
| |
| /* Setting acceptable policy OIDs. */ |
| if (!TS_CONF_set_policies(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting the acceptable one-way hash algorithms. */ |
| if (!TS_CONF_set_digests(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting guaranteed time stamp accuracy. */ |
| if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting the precision of the time. */ |
| if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting the ordering flaf if requested. */ |
| if (!TS_CONF_set_ordering(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting the TSA name required flag if requested. */ |
| if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Setting the ESS cert id chain flag if requested. */ |
| if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) |
| goto end; |
| |
| /* Creating the response. */ |
| if (!(response = TS_RESP_create_response(resp_ctx, query_bio))) |
| 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 *MS_CALLBACK 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())) |
| goto err; |
| |
| if (!(in = BIO_new_file(serialfile, "r"))) { |
| 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))) |
| goto err; |
| ASN1_INTEGER_free(serial); |
| serial = NULL; |
| if (!BN_add_word(bn, 1)) |
| goto err; |
| if (!(serial = BN_to_ASN1_INTEGER(bn, 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"))) |
| 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(char *data, char *digest, char *queryfile, |
| char *in, int token_in, |
| char *ca_path, char *ca_file, char *untrusted) |
| { |
| BIO *in_bio = NULL; |
| PKCS7 *token = NULL; |
| TS_RESP *response = NULL; |
| TS_VERIFY_CTX *verify_ctx = NULL; |
| int ret = 0; |
| |
| /* Decode the token (PKCS7) or response (TS_RESP) files. */ |
| if (!(in_bio = BIO_new_file(in, "rb"))) |
| goto end; |
| if (token_in) { |
| if (!(token = d2i_PKCS7_bio(in_bio, NULL))) |
| goto end; |
| } else { |
| if (!(response = d2i_TS_RESP_bio(in_bio, NULL))) |
| goto end; |
| } |
| |
| if (!(verify_ctx = create_verify_ctx(data, digest, queryfile, |
| ca_path, ca_file, untrusted))) |
| goto end; |
| |
| /* Checking the token or response against the request. */ |
| 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"); |
| /* Print errors, if there are any. */ |
| ERR_print_errors(bio_err); |
| } |
| |
| /* Clean up. */ |
| 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(char *data, char *digest, |
| char *queryfile, |
| char *ca_path, char *ca_file, |
| char *untrusted) |
| { |
| TS_VERIFY_CTX *ctx = NULL; |
| BIO *input = NULL; |
| TS_REQ *request = NULL; |
| int ret = 0; |
| |
| if (data != NULL || digest != NULL) { |
| if (!(ctx = TS_VERIFY_CTX_new())) |
| goto err; |
| ctx->flags = TS_VFY_VERSION | TS_VFY_SIGNER; |
| if (data != NULL) { |
| ctx->flags |= TS_VFY_DATA; |
| if (!(ctx->data = BIO_new_file(data, "rb"))) |
| goto err; |
| } else if (digest != NULL) { |
| long imprint_len; |
| ctx->flags |= TS_VFY_IMPRINT; |
| if (!(ctx->imprint = string_to_hex(digest, &imprint_len))) { |
| BIO_printf(bio_err, "invalid digest string\n"); |
| goto err; |
| } |
| ctx->imprint_len = imprint_len; |
| } |
| |
| } else if (queryfile != NULL) { |
| /* |
| * The request has just to be read, decoded and converted to a verify |
| * context object. |
| */ |
| if (!(input = BIO_new_file(queryfile, "rb"))) |
| goto err; |
| if (!(request = d2i_TS_REQ_bio(input, NULL))) |
| goto err; |
| if (!(ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL))) |
| goto err; |
| } else |
| return NULL; |
| |
| /* Add the signature verification flag and arguments. */ |
| ctx->flags |= TS_VFY_SIGNATURE; |
| |
| /* Initialising the X509_STORE object. */ |
| if (!(ctx->store = create_cert_store(ca_path, ca_file))) |
| goto err; |
| |
| /* Loading untrusted certificates. */ |
| if (untrusted && !(ctx->certs = TS_CONF_load_certs(untrusted))) |
| 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(char *ca_path, char *ca_file) |
| { |
| X509_STORE *cert_ctx = NULL; |
| X509_LOOKUP *lookup = NULL; |
| int i; |
| |
| /* Creating the X509_STORE object. */ |
| cert_ctx = X509_STORE_new(); |
| |
| /* Setting the callback for certificate chain verification. */ |
| X509_STORE_set_verify_cb(cert_ctx, verify_cb); |
| |
| /* Adding a trusted certificate directory source. */ |
| if (ca_path) { |
| 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, ca_path, X509_FILETYPE_PEM); |
| if (!i) { |
| BIO_printf(bio_err, "Error loading directory %s\n", ca_path); |
| goto err; |
| } |
| } |
| |
| /* Adding a trusted certificate file source. */ |
| if (ca_file) { |
| 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, ca_file, X509_FILETYPE_PEM); |
| if (!i) { |
| BIO_printf(bio_err, "Error loading file %s\n", ca_file); |
| goto err; |
| } |
| } |
| |
| return cert_ctx; |
| err: |
| X509_STORE_free(cert_ctx); |
| return NULL; |
| } |
| |
| static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx) |
| { |
| /*- |
| char buf[256]; |
| |
| if (!ok) |
| { |
| X509_NAME_oneline(X509_get_subject_name(ctx->current_cert), |
| buf, sizeof(buf)); |
| printf("%s\n", buf); |
| printf("error %d at %d depth lookup: %s\n", |
| ctx->error, ctx->error_depth, |
| X509_verify_cert_error_string(ctx->error)); |
| } |
| */ |
| |
| return ok; |
| } |
