1238384Sjkim/* crypto/ts/ts_resp_sign.c */ 2280304Sjkim/* 3280304Sjkim * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project 4280304Sjkim * 2002. 5238384Sjkim */ 6238384Sjkim/* ==================================================================== 7238384Sjkim * Copyright (c) 2006 The OpenSSL Project. All rights reserved. 8238384Sjkim * 9238384Sjkim * Redistribution and use in source and binary forms, with or without 10238384Sjkim * modification, are permitted provided that the following conditions 11238384Sjkim * are met: 12238384Sjkim * 13238384Sjkim * 1. Redistributions of source code must retain the above copyright 14280304Sjkim * notice, this list of conditions and the following disclaimer. 15238384Sjkim * 16238384Sjkim * 2. Redistributions in binary form must reproduce the above copyright 17238384Sjkim * notice, this list of conditions and the following disclaimer in 18238384Sjkim * the documentation and/or other materials provided with the 19238384Sjkim * distribution. 20238384Sjkim * 21238384Sjkim * 3. All advertising materials mentioning features or use of this 22238384Sjkim * software must display the following acknowledgment: 23238384Sjkim * "This product includes software developed by the OpenSSL Project 24238384Sjkim * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25238384Sjkim * 26238384Sjkim * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27238384Sjkim * endorse or promote products derived from this software without 28238384Sjkim * prior written permission. For written permission, please contact 29238384Sjkim * licensing@OpenSSL.org. 30238384Sjkim * 31238384Sjkim * 5. Products derived from this software may not be called "OpenSSL" 32238384Sjkim * nor may "OpenSSL" appear in their names without prior written 33238384Sjkim * permission of the OpenSSL Project. 34238384Sjkim * 35238384Sjkim * 6. Redistributions of any form whatsoever must retain the following 36238384Sjkim * acknowledgment: 37238384Sjkim * "This product includes software developed by the OpenSSL Project 38238384Sjkim * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39238384Sjkim * 40238384Sjkim * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41238384Sjkim * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42238384Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43238384Sjkim * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44238384Sjkim * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45238384Sjkim * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46238384Sjkim * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47238384Sjkim * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48238384Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49238384Sjkim * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50238384Sjkim * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51238384Sjkim * OF THE POSSIBILITY OF SUCH DAMAGE. 52238384Sjkim * ==================================================================== 53238384Sjkim * 54238384Sjkim * This product includes cryptographic software written by Eric Young 55238384Sjkim * (eay@cryptsoft.com). This product includes software written by Tim 56238384Sjkim * Hudson (tjh@cryptsoft.com). 57238384Sjkim * 58238384Sjkim */ 59238384Sjkim 60238384Sjkim#include "cryptlib.h" 61238384Sjkim 62238384Sjkim#if defined(OPENSSL_SYS_UNIX) 63280304Sjkim# include <sys/time.h> 64238384Sjkim#endif 65238384Sjkim 66238384Sjkim#include <openssl/objects.h> 67238384Sjkim#include <openssl/ts.h> 68238384Sjkim#include <openssl/pkcs7.h> 69238384Sjkim 70238384Sjkim/* Private function declarations. */ 71238384Sjkim 72238384Sjkimstatic ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *); 73238384Sjkimstatic int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec); 74238384Sjkimstatic int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *); 75238384Sjkim 76238384Sjkimstatic void TS_RESP_CTX_init(TS_RESP_CTX *ctx); 77238384Sjkimstatic void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx); 78238384Sjkimstatic int TS_RESP_check_request(TS_RESP_CTX *ctx); 79238384Sjkimstatic ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx); 80280304Sjkimstatic TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx, 81280304Sjkim ASN1_OBJECT *policy); 82238384Sjkimstatic int TS_RESP_process_extensions(TS_RESP_CTX *ctx); 83238384Sjkimstatic int TS_RESP_sign(TS_RESP_CTX *ctx); 84238384Sjkim 85280304Sjkimstatic ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert, 86280304Sjkim STACK_OF(X509) *certs); 87238384Sjkimstatic ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed); 88238384Sjkimstatic int TS_TST_INFO_content_new(PKCS7 *p7); 89238384Sjkimstatic int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc); 90238384Sjkim 91280304Sjkimstatic ASN1_GENERALIZEDTIME 92280304Sjkim*TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long, 93280304Sjkim unsigned); 94238384Sjkim 95238384Sjkim/* Default callbacks for response generation. */ 96238384Sjkim 97238384Sjkimstatic ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data) 98280304Sjkim{ 99280304Sjkim ASN1_INTEGER *serial = ASN1_INTEGER_new(); 100280304Sjkim if (!serial) 101280304Sjkim goto err; 102280304Sjkim if (!ASN1_INTEGER_set(serial, 1)) 103280304Sjkim goto err; 104280304Sjkim return serial; 105238384Sjkim err: 106280304Sjkim TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE); 107280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 108280304Sjkim "Error during serial number generation."); 109280304Sjkim return NULL; 110280304Sjkim} 111238384Sjkim 112238384Sjkim#if defined(OPENSSL_SYS_UNIX) 113238384Sjkim 114238384Sjkim/* Use the gettimeofday function call. */ 115280304Sjkimstatic int def_time_cb(struct TS_resp_ctx *ctx, void *data, 116280304Sjkim long *sec, long *usec) 117280304Sjkim{ 118280304Sjkim struct timeval tv; 119280304Sjkim if (gettimeofday(&tv, NULL) != 0) { 120280304Sjkim TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); 121280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 122280304Sjkim "Time is not available."); 123280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); 124280304Sjkim return 0; 125280304Sjkim } 126280304Sjkim /* Return time to caller. */ 127280304Sjkim *sec = tv.tv_sec; 128280304Sjkim *usec = tv.tv_usec; 129238384Sjkim 130280304Sjkim return 1; 131280304Sjkim} 132238384Sjkim 133238384Sjkim#else 134238384Sjkim 135238384Sjkim/* Use the time function call that provides only seconds precision. */ 136280304Sjkimstatic int def_time_cb(struct TS_resp_ctx *ctx, void *data, 137280304Sjkim long *sec, long *usec) 138280304Sjkim{ 139280304Sjkim time_t t; 140280304Sjkim if (time(&t) == (time_t)-1) { 141280304Sjkim TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); 142280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 143280304Sjkim "Time is not available."); 144280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); 145280304Sjkim return 0; 146280304Sjkim } 147280304Sjkim /* Return time to caller, only second precision. */ 148280304Sjkim *sec = (long)t; 149280304Sjkim *usec = 0; 150238384Sjkim 151280304Sjkim return 1; 152280304Sjkim} 153238384Sjkim 154238384Sjkim#endif 155238384Sjkim 156238384Sjkimstatic int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, 157280304Sjkim void *data) 158280304Sjkim{ 159280304Sjkim /* No extensions are processed here. */ 160280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 161280304Sjkim "Unsupported extension."); 162280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION); 163280304Sjkim return 0; 164280304Sjkim} 165238384Sjkim 166238384Sjkim/* TS_RESP_CTX management functions. */ 167238384Sjkim 168238384SjkimTS_RESP_CTX *TS_RESP_CTX_new() 169280304Sjkim{ 170280304Sjkim TS_RESP_CTX *ctx; 171238384Sjkim 172280304Sjkim if (!(ctx = (TS_RESP_CTX *)OPENSSL_malloc(sizeof(TS_RESP_CTX)))) { 173280304Sjkim TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE); 174280304Sjkim return NULL; 175280304Sjkim } 176280304Sjkim memset(ctx, 0, sizeof(TS_RESP_CTX)); 177238384Sjkim 178280304Sjkim /* Setting default callbacks. */ 179280304Sjkim ctx->serial_cb = def_serial_cb; 180280304Sjkim ctx->time_cb = def_time_cb; 181280304Sjkim ctx->extension_cb = def_extension_cb; 182238384Sjkim 183280304Sjkim return ctx; 184280304Sjkim} 185238384Sjkim 186238384Sjkimvoid TS_RESP_CTX_free(TS_RESP_CTX *ctx) 187280304Sjkim{ 188280304Sjkim if (!ctx) 189280304Sjkim return; 190238384Sjkim 191280304Sjkim X509_free(ctx->signer_cert); 192280304Sjkim EVP_PKEY_free(ctx->signer_key); 193280304Sjkim sk_X509_pop_free(ctx->certs, X509_free); 194280304Sjkim sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free); 195280304Sjkim ASN1_OBJECT_free(ctx->default_policy); 196280304Sjkim sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */ 197280304Sjkim ASN1_INTEGER_free(ctx->seconds); 198280304Sjkim ASN1_INTEGER_free(ctx->millis); 199280304Sjkim ASN1_INTEGER_free(ctx->micros); 200280304Sjkim OPENSSL_free(ctx); 201280304Sjkim} 202238384Sjkim 203238384Sjkimint TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer) 204280304Sjkim{ 205280304Sjkim if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) { 206280304Sjkim TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT, 207280304Sjkim TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE); 208280304Sjkim return 0; 209280304Sjkim } 210280304Sjkim if (ctx->signer_cert) 211280304Sjkim X509_free(ctx->signer_cert); 212280304Sjkim ctx->signer_cert = signer; 213280304Sjkim CRYPTO_add(&ctx->signer_cert->references, +1, CRYPTO_LOCK_X509); 214280304Sjkim return 1; 215280304Sjkim} 216238384Sjkim 217238384Sjkimint TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key) 218280304Sjkim{ 219280304Sjkim if (ctx->signer_key) 220280304Sjkim EVP_PKEY_free(ctx->signer_key); 221280304Sjkim ctx->signer_key = key; 222280304Sjkim CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY); 223238384Sjkim 224280304Sjkim return 1; 225280304Sjkim} 226238384Sjkim 227238384Sjkimint TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *def_policy) 228280304Sjkim{ 229280304Sjkim if (ctx->default_policy) 230280304Sjkim ASN1_OBJECT_free(ctx->default_policy); 231280304Sjkim if (!(ctx->default_policy = OBJ_dup(def_policy))) 232280304Sjkim goto err; 233280304Sjkim return 1; 234238384Sjkim err: 235280304Sjkim TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE); 236280304Sjkim return 0; 237280304Sjkim} 238238384Sjkim 239238384Sjkimint TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs) 240280304Sjkim{ 241280304Sjkim int i; 242238384Sjkim 243280304Sjkim if (ctx->certs) { 244280304Sjkim sk_X509_pop_free(ctx->certs, X509_free); 245280304Sjkim ctx->certs = NULL; 246280304Sjkim } 247280304Sjkim if (!certs) 248280304Sjkim return 1; 249280304Sjkim if (!(ctx->certs = sk_X509_dup(certs))) { 250280304Sjkim TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE); 251280304Sjkim return 0; 252280304Sjkim } 253280304Sjkim for (i = 0; i < sk_X509_num(ctx->certs); ++i) { 254280304Sjkim X509 *cert = sk_X509_value(ctx->certs, i); 255280304Sjkim CRYPTO_add(&cert->references, +1, CRYPTO_LOCK_X509); 256280304Sjkim } 257238384Sjkim 258280304Sjkim return 1; 259280304Sjkim} 260238384Sjkim 261238384Sjkimint TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *policy) 262280304Sjkim{ 263280304Sjkim ASN1_OBJECT *copy = NULL; 264238384Sjkim 265280304Sjkim /* Create new policy stack if necessary. */ 266280304Sjkim if (!ctx->policies && !(ctx->policies = sk_ASN1_OBJECT_new_null())) 267280304Sjkim goto err; 268280304Sjkim if (!(copy = OBJ_dup(policy))) 269280304Sjkim goto err; 270280304Sjkim if (!sk_ASN1_OBJECT_push(ctx->policies, copy)) 271280304Sjkim goto err; 272238384Sjkim 273280304Sjkim return 1; 274238384Sjkim err: 275280304Sjkim TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE); 276280304Sjkim ASN1_OBJECT_free(copy); 277280304Sjkim return 0; 278280304Sjkim} 279238384Sjkim 280238384Sjkimint TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md) 281280304Sjkim{ 282280304Sjkim /* Create new md stack if necessary. */ 283280304Sjkim if (!ctx->mds && !(ctx->mds = sk_EVP_MD_new_null())) 284280304Sjkim goto err; 285280304Sjkim /* Add the shared md, no copy needed. */ 286280304Sjkim if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md)) 287280304Sjkim goto err; 288238384Sjkim 289280304Sjkim return 1; 290238384Sjkim err: 291280304Sjkim TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE); 292280304Sjkim return 0; 293280304Sjkim} 294238384Sjkim 295280304Sjkim#define TS_RESP_CTX_accuracy_free(ctx) \ 296280304Sjkim ASN1_INTEGER_free(ctx->seconds); \ 297280304Sjkim ctx->seconds = NULL; \ 298280304Sjkim ASN1_INTEGER_free(ctx->millis); \ 299280304Sjkim ctx->millis = NULL; \ 300280304Sjkim ASN1_INTEGER_free(ctx->micros); \ 301280304Sjkim ctx->micros = NULL; 302238384Sjkim 303280304Sjkimint TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, 304280304Sjkim int secs, int millis, int micros) 305280304Sjkim{ 306238384Sjkim 307280304Sjkim TS_RESP_CTX_accuracy_free(ctx); 308280304Sjkim if (secs && (!(ctx->seconds = ASN1_INTEGER_new()) 309280304Sjkim || !ASN1_INTEGER_set(ctx->seconds, secs))) 310280304Sjkim goto err; 311280304Sjkim if (millis && (!(ctx->millis = ASN1_INTEGER_new()) 312280304Sjkim || !ASN1_INTEGER_set(ctx->millis, millis))) 313280304Sjkim goto err; 314280304Sjkim if (micros && (!(ctx->micros = ASN1_INTEGER_new()) 315280304Sjkim || !ASN1_INTEGER_set(ctx->micros, micros))) 316280304Sjkim goto err; 317238384Sjkim 318280304Sjkim return 1; 319238384Sjkim err: 320280304Sjkim TS_RESP_CTX_accuracy_free(ctx); 321280304Sjkim TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE); 322280304Sjkim return 0; 323280304Sjkim} 324238384Sjkim 325238384Sjkimvoid TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags) 326280304Sjkim{ 327280304Sjkim ctx->flags |= flags; 328280304Sjkim} 329238384Sjkim 330238384Sjkimvoid TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data) 331280304Sjkim{ 332280304Sjkim ctx->serial_cb = cb; 333280304Sjkim ctx->serial_cb_data = data; 334280304Sjkim} 335238384Sjkim 336238384Sjkimvoid TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data) 337280304Sjkim{ 338280304Sjkim ctx->time_cb = cb; 339280304Sjkim ctx->time_cb_data = data; 340280304Sjkim} 341238384Sjkim 342280304Sjkimvoid TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, 343280304Sjkim TS_extension_cb cb, void *data) 344280304Sjkim{ 345280304Sjkim ctx->extension_cb = cb; 346280304Sjkim ctx->extension_cb_data = data; 347280304Sjkim} 348238384Sjkim 349280304Sjkimint TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, 350280304Sjkim int status, const char *text) 351280304Sjkim{ 352280304Sjkim TS_STATUS_INFO *si = NULL; 353280304Sjkim ASN1_UTF8STRING *utf8_text = NULL; 354280304Sjkim int ret = 0; 355238384Sjkim 356280304Sjkim if (!(si = TS_STATUS_INFO_new())) 357280304Sjkim goto err; 358280304Sjkim if (!ASN1_INTEGER_set(si->status, status)) 359280304Sjkim goto err; 360280304Sjkim if (text) { 361280304Sjkim if (!(utf8_text = ASN1_UTF8STRING_new()) 362280304Sjkim || !ASN1_STRING_set(utf8_text, text, strlen(text))) 363280304Sjkim goto err; 364280304Sjkim if (!si->text && !(si->text = sk_ASN1_UTF8STRING_new_null())) 365280304Sjkim goto err; 366280304Sjkim if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text)) 367280304Sjkim goto err; 368280304Sjkim utf8_text = NULL; /* Ownership is lost. */ 369280304Sjkim } 370280304Sjkim if (!TS_RESP_set_status_info(ctx->response, si)) 371280304Sjkim goto err; 372280304Sjkim ret = 1; 373238384Sjkim err: 374280304Sjkim if (!ret) 375280304Sjkim TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE); 376280304Sjkim TS_STATUS_INFO_free(si); 377280304Sjkim ASN1_UTF8STRING_free(utf8_text); 378280304Sjkim return ret; 379280304Sjkim} 380238384Sjkim 381280304Sjkimint TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, 382280304Sjkim int status, const char *text) 383280304Sjkim{ 384280304Sjkim int ret = 1; 385280304Sjkim TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response); 386238384Sjkim 387280304Sjkim if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) { 388280304Sjkim /* Status has not been set, set it now. */ 389280304Sjkim ret = TS_RESP_CTX_set_status_info(ctx, status, text); 390280304Sjkim } 391280304Sjkim return ret; 392280304Sjkim} 393238384Sjkim 394238384Sjkimint TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure) 395280304Sjkim{ 396280304Sjkim TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response); 397280304Sjkim if (!si->failure_info && !(si->failure_info = ASN1_BIT_STRING_new())) 398280304Sjkim goto err; 399280304Sjkim if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1)) 400280304Sjkim goto err; 401280304Sjkim return 1; 402238384Sjkim err: 403280304Sjkim TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE); 404280304Sjkim return 0; 405280304Sjkim} 406238384Sjkim 407238384SjkimTS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx) 408280304Sjkim{ 409280304Sjkim return ctx->request; 410280304Sjkim} 411238384Sjkim 412238384SjkimTS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx) 413280304Sjkim{ 414280304Sjkim return ctx->tst_info; 415280304Sjkim} 416238384Sjkim 417280304Sjkimint TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, 418280304Sjkim unsigned precision) 419280304Sjkim{ 420280304Sjkim if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) 421280304Sjkim return 0; 422280304Sjkim ctx->clock_precision_digits = precision; 423280304Sjkim return 1; 424280304Sjkim} 425238384Sjkim 426238384Sjkim/* Main entry method of the response generation. */ 427238384SjkimTS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio) 428280304Sjkim{ 429280304Sjkim ASN1_OBJECT *policy; 430280304Sjkim TS_RESP *response; 431280304Sjkim int result = 0; 432238384Sjkim 433280304Sjkim TS_RESP_CTX_init(ctx); 434238384Sjkim 435280304Sjkim /* Creating the response object. */ 436280304Sjkim if (!(ctx->response = TS_RESP_new())) { 437280304Sjkim TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE); 438280304Sjkim goto end; 439280304Sjkim } 440238384Sjkim 441280304Sjkim /* Parsing DER request. */ 442280304Sjkim if (!(ctx->request = d2i_TS_REQ_bio(req_bio, NULL))) { 443280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 444280304Sjkim "Bad request format or " "system error."); 445280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); 446280304Sjkim goto end; 447280304Sjkim } 448238384Sjkim 449280304Sjkim /* Setting default status info. */ 450280304Sjkim if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL)) 451280304Sjkim goto end; 452238384Sjkim 453280304Sjkim /* Checking the request format. */ 454280304Sjkim if (!TS_RESP_check_request(ctx)) 455280304Sjkim goto end; 456238384Sjkim 457280304Sjkim /* Checking acceptable policies. */ 458280304Sjkim if (!(policy = TS_RESP_get_policy(ctx))) 459280304Sjkim goto end; 460238384Sjkim 461280304Sjkim /* Creating the TS_TST_INFO object. */ 462280304Sjkim if (!(ctx->tst_info = TS_RESP_create_tst_info(ctx, policy))) 463280304Sjkim goto end; 464238384Sjkim 465280304Sjkim /* Processing extensions. */ 466280304Sjkim if (!TS_RESP_process_extensions(ctx)) 467280304Sjkim goto end; 468238384Sjkim 469280304Sjkim /* Generating the signature. */ 470280304Sjkim if (!TS_RESP_sign(ctx)) 471280304Sjkim goto end; 472238384Sjkim 473280304Sjkim /* Everything was successful. */ 474280304Sjkim result = 1; 475238384Sjkim end: 476280304Sjkim if (!result) { 477280304Sjkim TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR); 478280304Sjkim if (ctx->response != NULL) { 479280304Sjkim if (TS_RESP_CTX_set_status_info_cond(ctx, 480280304Sjkim TS_STATUS_REJECTION, 481280304Sjkim "Error during response " 482280304Sjkim "generation.") == 0) { 483280304Sjkim TS_RESP_free(ctx->response); 484280304Sjkim ctx->response = NULL; 485280304Sjkim } 486280304Sjkim } 487280304Sjkim } 488280304Sjkim response = ctx->response; 489280304Sjkim ctx->response = NULL; /* Ownership will be returned to caller. */ 490280304Sjkim TS_RESP_CTX_cleanup(ctx); 491280304Sjkim return response; 492280304Sjkim} 493238384Sjkim 494238384Sjkim/* Initializes the variable part of the context. */ 495238384Sjkimstatic void TS_RESP_CTX_init(TS_RESP_CTX *ctx) 496280304Sjkim{ 497280304Sjkim ctx->request = NULL; 498280304Sjkim ctx->response = NULL; 499280304Sjkim ctx->tst_info = NULL; 500280304Sjkim} 501238384Sjkim 502238384Sjkim/* Cleans up the variable part of the context. */ 503238384Sjkimstatic void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx) 504280304Sjkim{ 505280304Sjkim TS_REQ_free(ctx->request); 506280304Sjkim ctx->request = NULL; 507280304Sjkim TS_RESP_free(ctx->response); 508280304Sjkim ctx->response = NULL; 509280304Sjkim TS_TST_INFO_free(ctx->tst_info); 510280304Sjkim ctx->tst_info = NULL; 511280304Sjkim} 512238384Sjkim 513238384Sjkim/* Checks the format and content of the request. */ 514238384Sjkimstatic int TS_RESP_check_request(TS_RESP_CTX *ctx) 515280304Sjkim{ 516280304Sjkim TS_REQ *request = ctx->request; 517280304Sjkim TS_MSG_IMPRINT *msg_imprint; 518280304Sjkim X509_ALGOR *md_alg; 519280304Sjkim int md_alg_id; 520280304Sjkim const ASN1_OCTET_STRING *digest; 521280304Sjkim EVP_MD *md = NULL; 522280304Sjkim int i; 523238384Sjkim 524280304Sjkim /* Checking request version. */ 525280304Sjkim if (TS_REQ_get_version(request) != 1) { 526280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 527280304Sjkim "Bad request version."); 528280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST); 529280304Sjkim return 0; 530280304Sjkim } 531238384Sjkim 532280304Sjkim /* Checking message digest algorithm. */ 533280304Sjkim msg_imprint = TS_REQ_get_msg_imprint(request); 534280304Sjkim md_alg = TS_MSG_IMPRINT_get_algo(msg_imprint); 535280304Sjkim md_alg_id = OBJ_obj2nid(md_alg->algorithm); 536280304Sjkim for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) { 537280304Sjkim EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i); 538280304Sjkim if (md_alg_id == EVP_MD_type(current_md)) 539280304Sjkim md = current_md; 540280304Sjkim } 541280304Sjkim if (!md) { 542280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 543280304Sjkim "Message digest algorithm is " 544280304Sjkim "not supported."); 545280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); 546280304Sjkim return 0; 547280304Sjkim } 548238384Sjkim 549280304Sjkim /* No message digest takes parameter. */ 550280304Sjkim if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) { 551280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 552280304Sjkim "Superfluous message digest " 553280304Sjkim "parameter."); 554280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); 555280304Sjkim return 0; 556280304Sjkim } 557280304Sjkim /* Checking message digest size. */ 558280304Sjkim digest = TS_MSG_IMPRINT_get_msg(msg_imprint); 559280304Sjkim if (digest->length != EVP_MD_size(md)) { 560280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 561280304Sjkim "Bad message digest."); 562280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); 563280304Sjkim return 0; 564280304Sjkim } 565238384Sjkim 566280304Sjkim return 1; 567280304Sjkim} 568238384Sjkim 569238384Sjkim/* Returns the TSA policy based on the requested and acceptable policies. */ 570238384Sjkimstatic ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx) 571280304Sjkim{ 572280304Sjkim ASN1_OBJECT *requested = TS_REQ_get_policy_id(ctx->request); 573280304Sjkim ASN1_OBJECT *policy = NULL; 574280304Sjkim int i; 575238384Sjkim 576280304Sjkim if (ctx->default_policy == NULL) { 577280304Sjkim TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER); 578280304Sjkim return NULL; 579280304Sjkim } 580280304Sjkim /* 581280304Sjkim * Return the default policy if none is requested or the default is 582280304Sjkim * requested. 583280304Sjkim */ 584280304Sjkim if (!requested || !OBJ_cmp(requested, ctx->default_policy)) 585280304Sjkim policy = ctx->default_policy; 586238384Sjkim 587280304Sjkim /* Check if the policy is acceptable. */ 588280304Sjkim for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) { 589280304Sjkim ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i); 590280304Sjkim if (!OBJ_cmp(requested, current)) 591280304Sjkim policy = current; 592280304Sjkim } 593280304Sjkim if (!policy) { 594280304Sjkim TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY); 595280304Sjkim TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, 596280304Sjkim "Requested policy is not " "supported."); 597280304Sjkim TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY); 598280304Sjkim } 599280304Sjkim return policy; 600280304Sjkim} 601238384Sjkim 602238384Sjkim/* Creates the TS_TST_INFO object based on the settings of the context. */ 603238384Sjkimstatic TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx, 604280304Sjkim ASN1_OBJECT *policy) 605280304Sjkim{ 606280304Sjkim int result = 0; 607280304Sjkim TS_TST_INFO *tst_info = NULL; 608280304Sjkim ASN1_INTEGER *serial = NULL; 609280304Sjkim ASN1_GENERALIZEDTIME *asn1_time = NULL; 610280304Sjkim long sec, usec; 611280304Sjkim TS_ACCURACY *accuracy = NULL; 612280304Sjkim const ASN1_INTEGER *nonce; 613280304Sjkim GENERAL_NAME *tsa_name = NULL; 614238384Sjkim 615280304Sjkim if (!(tst_info = TS_TST_INFO_new())) 616280304Sjkim goto end; 617280304Sjkim if (!TS_TST_INFO_set_version(tst_info, 1)) 618280304Sjkim goto end; 619280304Sjkim if (!TS_TST_INFO_set_policy_id(tst_info, policy)) 620280304Sjkim goto end; 621280304Sjkim if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint)) 622280304Sjkim goto end; 623280304Sjkim if (!(serial = (*ctx->serial_cb) (ctx, ctx->serial_cb_data)) 624280304Sjkim || !TS_TST_INFO_set_serial(tst_info, serial)) 625280304Sjkim goto end; 626280304Sjkim if (!(*ctx->time_cb) (ctx, ctx->time_cb_data, &sec, &usec) 627280304Sjkim || !(asn1_time = TS_RESP_set_genTime_with_precision(NULL, 628280304Sjkim sec, usec, 629280304Sjkim ctx->clock_precision_digits)) 630280304Sjkim || !TS_TST_INFO_set_time(tst_info, asn1_time)) 631280304Sjkim goto end; 632238384Sjkim 633280304Sjkim /* Setting accuracy if needed. */ 634280304Sjkim if ((ctx->seconds || ctx->millis || ctx->micros) 635280304Sjkim && !(accuracy = TS_ACCURACY_new())) 636280304Sjkim goto end; 637238384Sjkim 638280304Sjkim if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds)) 639280304Sjkim goto end; 640280304Sjkim if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis)) 641280304Sjkim goto end; 642280304Sjkim if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros)) 643280304Sjkim goto end; 644280304Sjkim if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy)) 645280304Sjkim goto end; 646238384Sjkim 647280304Sjkim /* Setting ordering. */ 648280304Sjkim if ((ctx->flags & TS_ORDERING) 649280304Sjkim && !TS_TST_INFO_set_ordering(tst_info, 1)) 650280304Sjkim goto end; 651238384Sjkim 652280304Sjkim /* Setting nonce if needed. */ 653280304Sjkim if ((nonce = TS_REQ_get_nonce(ctx->request)) != NULL 654280304Sjkim && !TS_TST_INFO_set_nonce(tst_info, nonce)) 655280304Sjkim goto end; 656238384Sjkim 657280304Sjkim /* Setting TSA name to subject of signer certificate. */ 658280304Sjkim if (ctx->flags & TS_TSA_NAME) { 659280304Sjkim if (!(tsa_name = GENERAL_NAME_new())) 660280304Sjkim goto end; 661280304Sjkim tsa_name->type = GEN_DIRNAME; 662280304Sjkim tsa_name->d.dirn = 663280304Sjkim X509_NAME_dup(ctx->signer_cert->cert_info->subject); 664280304Sjkim if (!tsa_name->d.dirn) 665280304Sjkim goto end; 666280304Sjkim if (!TS_TST_INFO_set_tsa(tst_info, tsa_name)) 667280304Sjkim goto end; 668280304Sjkim } 669280304Sjkim 670280304Sjkim result = 1; 671238384Sjkim end: 672280304Sjkim if (!result) { 673280304Sjkim TS_TST_INFO_free(tst_info); 674280304Sjkim tst_info = NULL; 675280304Sjkim TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR); 676280304Sjkim TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, 677280304Sjkim "Error during TSTInfo " 678280304Sjkim "generation."); 679280304Sjkim } 680280304Sjkim GENERAL_NAME_free(tsa_name); 681280304Sjkim TS_ACCURACY_free(accuracy); 682280304Sjkim ASN1_GENERALIZEDTIME_free(asn1_time); 683280304Sjkim ASN1_INTEGER_free(serial); 684238384Sjkim 685280304Sjkim return tst_info; 686280304Sjkim} 687280304Sjkim 688238384Sjkim/* Processing the extensions of the request. */ 689238384Sjkimstatic int TS_RESP_process_extensions(TS_RESP_CTX *ctx) 690280304Sjkim{ 691280304Sjkim STACK_OF(X509_EXTENSION) *exts = TS_REQ_get_exts(ctx->request); 692280304Sjkim int i; 693280304Sjkim int ok = 1; 694238384Sjkim 695280304Sjkim for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) { 696280304Sjkim X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); 697280304Sjkim /* 698280304Sjkim * XXXXX The last argument was previously (void *)ctx->extension_cb, 699280304Sjkim * but ISO C doesn't permit converting a function pointer to void *. 700280304Sjkim * For lack of better information, I'm placing a NULL there instead. 701280304Sjkim * The callback can pick its own address out from the ctx anyway... 702280304Sjkim */ 703280304Sjkim ok = (*ctx->extension_cb) (ctx, ext, NULL); 704280304Sjkim } 705238384Sjkim 706280304Sjkim return ok; 707280304Sjkim} 708238384Sjkim 709238384Sjkim/* Functions for signing the TS_TST_INFO structure of the context. */ 710238384Sjkimstatic int TS_RESP_sign(TS_RESP_CTX *ctx) 711280304Sjkim{ 712280304Sjkim int ret = 0; 713280304Sjkim PKCS7 *p7 = NULL; 714280304Sjkim PKCS7_SIGNER_INFO *si; 715280304Sjkim STACK_OF(X509) *certs; /* Certificates to include in sc. */ 716280304Sjkim ESS_SIGNING_CERT *sc = NULL; 717280304Sjkim ASN1_OBJECT *oid; 718280304Sjkim BIO *p7bio = NULL; 719280304Sjkim int i; 720238384Sjkim 721280304Sjkim /* Check if signcert and pkey match. */ 722280304Sjkim if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) { 723280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); 724280304Sjkim goto err; 725280304Sjkim } 726238384Sjkim 727280304Sjkim /* Create a new PKCS7 signed object. */ 728280304Sjkim if (!(p7 = PKCS7_new())) { 729280304Sjkim TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); 730280304Sjkim goto err; 731280304Sjkim } 732280304Sjkim if (!PKCS7_set_type(p7, NID_pkcs7_signed)) 733280304Sjkim goto err; 734238384Sjkim 735280304Sjkim /* Force SignedData version to be 3 instead of the default 1. */ 736280304Sjkim if (!ASN1_INTEGER_set(p7->d.sign->version, 3)) 737280304Sjkim goto err; 738238384Sjkim 739280304Sjkim /* Add signer certificate and optional certificate chain. */ 740280304Sjkim if (TS_REQ_get_cert_req(ctx->request)) { 741280304Sjkim PKCS7_add_certificate(p7, ctx->signer_cert); 742280304Sjkim if (ctx->certs) { 743280304Sjkim for (i = 0; i < sk_X509_num(ctx->certs); ++i) { 744280304Sjkim X509 *cert = sk_X509_value(ctx->certs, i); 745280304Sjkim PKCS7_add_certificate(p7, cert); 746280304Sjkim } 747280304Sjkim } 748280304Sjkim } 749238384Sjkim 750280304Sjkim /* Add a new signer info. */ 751280304Sjkim if (!(si = PKCS7_add_signature(p7, ctx->signer_cert, 752280304Sjkim ctx->signer_key, EVP_sha1()))) { 753280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR); 754280304Sjkim goto err; 755280304Sjkim } 756238384Sjkim 757280304Sjkim /* Add content type signed attribute to the signer info. */ 758280304Sjkim oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); 759280304Sjkim if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, 760280304Sjkim V_ASN1_OBJECT, oid)) { 761280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR); 762280304Sjkim goto err; 763280304Sjkim } 764238384Sjkim 765280304Sjkim /* 766280304Sjkim * Create the ESS SigningCertificate attribute which contains the signer 767280304Sjkim * certificate id and optionally the certificate chain. 768280304Sjkim */ 769280304Sjkim certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL; 770280304Sjkim if (!(sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs))) 771280304Sjkim goto err; 772238384Sjkim 773280304Sjkim /* Add SigningCertificate signed attribute to the signer info. */ 774280304Sjkim if (!ESS_add_signing_cert(si, sc)) { 775280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR); 776280304Sjkim goto err; 777280304Sjkim } 778238384Sjkim 779280304Sjkim /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */ 780280304Sjkim if (!TS_TST_INFO_content_new(p7)) 781280304Sjkim goto err; 782238384Sjkim 783280304Sjkim /* Add the DER encoded tst_info to the PKCS7 structure. */ 784280304Sjkim if (!(p7bio = PKCS7_dataInit(p7, NULL))) { 785280304Sjkim TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); 786280304Sjkim goto err; 787280304Sjkim } 788238384Sjkim 789280304Sjkim /* Convert tst_info to DER. */ 790280304Sjkim if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) { 791280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); 792280304Sjkim goto err; 793280304Sjkim } 794238384Sjkim 795280304Sjkim /* Create the signature and add it to the signer info. */ 796280304Sjkim if (!PKCS7_dataFinal(p7, p7bio)) { 797280304Sjkim TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); 798280304Sjkim goto err; 799280304Sjkim } 800238384Sjkim 801280304Sjkim /* Set new PKCS7 and TST_INFO objects. */ 802280304Sjkim TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info); 803280304Sjkim p7 = NULL; /* Ownership is lost. */ 804280304Sjkim ctx->tst_info = NULL; /* Ownership is lost. */ 805238384Sjkim 806280304Sjkim ret = 1; 807238384Sjkim err: 808280304Sjkim if (!ret) 809280304Sjkim TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, 810280304Sjkim "Error during signature " 811280304Sjkim "generation."); 812280304Sjkim BIO_free_all(p7bio); 813280304Sjkim ESS_SIGNING_CERT_free(sc); 814280304Sjkim PKCS7_free(p7); 815280304Sjkim return ret; 816280304Sjkim} 817238384Sjkim 818280304Sjkimstatic ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert, 819280304Sjkim STACK_OF(X509) *certs) 820280304Sjkim{ 821280304Sjkim ESS_CERT_ID *cid; 822280304Sjkim ESS_SIGNING_CERT *sc = NULL; 823280304Sjkim int i; 824238384Sjkim 825280304Sjkim /* Creating the ESS_CERT_ID stack. */ 826280304Sjkim if (!(sc = ESS_SIGNING_CERT_new())) 827280304Sjkim goto err; 828280304Sjkim if (!sc->cert_ids && !(sc->cert_ids = sk_ESS_CERT_ID_new_null())) 829280304Sjkim goto err; 830238384Sjkim 831280304Sjkim /* Adding the signing certificate id. */ 832280304Sjkim if (!(cid = ESS_CERT_ID_new_init(signcert, 0)) 833280304Sjkim || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) 834280304Sjkim goto err; 835280304Sjkim /* Adding the certificate chain ids. */ 836280304Sjkim for (i = 0; i < sk_X509_num(certs); ++i) { 837280304Sjkim X509 *cert = sk_X509_value(certs, i); 838280304Sjkim if (!(cid = ESS_CERT_ID_new_init(cert, 1)) 839280304Sjkim || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) 840280304Sjkim goto err; 841280304Sjkim } 842238384Sjkim 843280304Sjkim return sc; 844280304Sjkim err: 845280304Sjkim ESS_SIGNING_CERT_free(sc); 846280304Sjkim TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE); 847280304Sjkim return NULL; 848280304Sjkim} 849238384Sjkim 850238384Sjkimstatic ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed) 851280304Sjkim{ 852280304Sjkim ESS_CERT_ID *cid = NULL; 853280304Sjkim GENERAL_NAME *name = NULL; 854238384Sjkim 855280304Sjkim /* Recompute SHA1 hash of certificate if necessary (side effect). */ 856280304Sjkim X509_check_purpose(cert, -1, 0); 857238384Sjkim 858280304Sjkim if (!(cid = ESS_CERT_ID_new())) 859280304Sjkim goto err; 860280304Sjkim if (!ASN1_OCTET_STRING_set(cid->hash, cert->sha1_hash, 861280304Sjkim sizeof(cert->sha1_hash))) 862280304Sjkim goto err; 863238384Sjkim 864280304Sjkim /* Setting the issuer/serial if requested. */ 865280304Sjkim if (issuer_needed) { 866280304Sjkim /* Creating issuer/serial structure. */ 867280304Sjkim if (!cid->issuer_serial 868280304Sjkim && !(cid->issuer_serial = ESS_ISSUER_SERIAL_new())) 869280304Sjkim goto err; 870280304Sjkim /* Creating general name from the certificate issuer. */ 871280304Sjkim if (!(name = GENERAL_NAME_new())) 872280304Sjkim goto err; 873280304Sjkim name->type = GEN_DIRNAME; 874280304Sjkim if (!(name->d.dirn = X509_NAME_dup(cert->cert_info->issuer))) 875280304Sjkim goto err; 876280304Sjkim if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name)) 877280304Sjkim goto err; 878280304Sjkim name = NULL; /* Ownership is lost. */ 879280304Sjkim /* Setting the serial number. */ 880280304Sjkim ASN1_INTEGER_free(cid->issuer_serial->serial); 881280304Sjkim if (!(cid->issuer_serial->serial = 882280304Sjkim ASN1_INTEGER_dup(cert->cert_info->serialNumber))) 883280304Sjkim goto err; 884280304Sjkim } 885238384Sjkim 886280304Sjkim return cid; 887280304Sjkim err: 888280304Sjkim GENERAL_NAME_free(name); 889280304Sjkim ESS_CERT_ID_free(cid); 890280304Sjkim TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE); 891280304Sjkim return NULL; 892280304Sjkim} 893280304Sjkim 894238384Sjkimstatic int TS_TST_INFO_content_new(PKCS7 *p7) 895280304Sjkim{ 896280304Sjkim PKCS7 *ret = NULL; 897280304Sjkim ASN1_OCTET_STRING *octet_string = NULL; 898238384Sjkim 899280304Sjkim /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */ 900280304Sjkim if (!(ret = PKCS7_new())) 901280304Sjkim goto err; 902280304Sjkim if (!(ret->d.other = ASN1_TYPE_new())) 903280304Sjkim goto err; 904280304Sjkim ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); 905280304Sjkim if (!(octet_string = ASN1_OCTET_STRING_new())) 906280304Sjkim goto err; 907280304Sjkim ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string); 908280304Sjkim octet_string = NULL; 909238384Sjkim 910280304Sjkim /* Add encapsulated content to signed PKCS7 structure. */ 911280304Sjkim if (!PKCS7_set_content(p7, ret)) 912280304Sjkim goto err; 913238384Sjkim 914280304Sjkim return 1; 915238384Sjkim err: 916280304Sjkim ASN1_OCTET_STRING_free(octet_string); 917280304Sjkim PKCS7_free(ret); 918280304Sjkim return 0; 919280304Sjkim} 920238384Sjkim 921238384Sjkimstatic int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc) 922280304Sjkim{ 923280304Sjkim ASN1_STRING *seq = NULL; 924280304Sjkim unsigned char *p, *pp = NULL; 925280304Sjkim int len; 926238384Sjkim 927280304Sjkim len = i2d_ESS_SIGNING_CERT(sc, NULL); 928280304Sjkim if (!(pp = (unsigned char *)OPENSSL_malloc(len))) { 929280304Sjkim TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); 930280304Sjkim goto err; 931280304Sjkim } 932280304Sjkim p = pp; 933280304Sjkim i2d_ESS_SIGNING_CERT(sc, &p); 934280304Sjkim if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) { 935280304Sjkim TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); 936280304Sjkim goto err; 937280304Sjkim } 938280304Sjkim OPENSSL_free(pp); 939280304Sjkim pp = NULL; 940280304Sjkim return PKCS7_add_signed_attribute(si, 941280304Sjkim NID_id_smime_aa_signingCertificate, 942280304Sjkim V_ASN1_SEQUENCE, seq); 943238384Sjkim err: 944280304Sjkim ASN1_STRING_free(seq); 945280304Sjkim OPENSSL_free(pp); 946238384Sjkim 947280304Sjkim return 0; 948280304Sjkim} 949238384Sjkim 950280304Sjkimstatic ASN1_GENERALIZEDTIME 951280304Sjkim*TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time, 952280304Sjkim long sec, long usec, unsigned precision) 953280304Sjkim{ 954280304Sjkim time_t time_sec = (time_t)sec; 955280304Sjkim struct tm *tm = NULL; 956280304Sjkim char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS]; 957280304Sjkim char *p = genTime_str; 958280304Sjkim char *p_end = genTime_str + sizeof(genTime_str); 959238384Sjkim 960280304Sjkim if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) 961280304Sjkim goto err; 962238384Sjkim 963280304Sjkim if (!(tm = gmtime(&time_sec))) 964280304Sjkim goto err; 965238384Sjkim 966280304Sjkim /* 967280304Sjkim * Put "genTime_str" in GeneralizedTime format. We work around the 968280304Sjkim * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST 969280304Sjkim * NOT include fractional seconds") and OpenSSL related functions to 970280304Sjkim * meet the rfc3161 requirement: "GeneralizedTime syntax can include 971280304Sjkim * fraction-of-second details". 972280304Sjkim */ 973280304Sjkim p += BIO_snprintf(p, p_end - p, 974280304Sjkim "%04d%02d%02d%02d%02d%02d", 975280304Sjkim tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, 976280304Sjkim tm->tm_hour, tm->tm_min, tm->tm_sec); 977280304Sjkim if (precision > 0) { 978280304Sjkim /* Add fraction of seconds (leave space for dot and null). */ 979280304Sjkim BIO_snprintf(p, 2 + precision, ".%06ld", usec); 980280304Sjkim /* 981280304Sjkim * We cannot use the snprintf return value, because it might have 982280304Sjkim * been truncated. 983280304Sjkim */ 984280304Sjkim p += strlen(p); 985238384Sjkim 986280304Sjkim /* 987280304Sjkim * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the 988280304Sjkim * following restrictions for a DER-encoding, which OpenSSL 989280304Sjkim * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't 990280304Sjkim * support: "The encoding MUST terminate with a "Z" (which means 991280304Sjkim * "Zulu" time). The decimal point element, if present, MUST be the 992280304Sjkim * point option ".". The fractional-seconds elements, if present, 993280304Sjkim * MUST omit all trailing 0's; if the elements correspond to 0, they 994280304Sjkim * MUST be wholly omitted, and the decimal point element also MUST be 995280304Sjkim * omitted." 996280304Sjkim */ 997280304Sjkim /* 998280304Sjkim * Remove trailing zeros. The dot guarantees the exit condition of 999280304Sjkim * this loop even if all the digits are zero. 1000280304Sjkim */ 1001280304Sjkim while (*--p == '0') 1002280304Sjkim /* 1003280304Sjkim * empty 1004280304Sjkim */ ; 1005280304Sjkim /* p points to either the dot or the last non-zero digit. */ 1006280304Sjkim if (*p != '.') 1007280304Sjkim ++p; 1008280304Sjkim } 1009280304Sjkim /* Add the trailing Z and the terminating null. */ 1010280304Sjkim *p++ = 'Z'; 1011280304Sjkim *p++ = '\0'; 1012238384Sjkim 1013280304Sjkim /* Now call OpenSSL to check and set our genTime value */ 1014280304Sjkim if (!asn1_time && !(asn1_time = M_ASN1_GENERALIZEDTIME_new())) 1015280304Sjkim goto err; 1016280304Sjkim if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) { 1017280304Sjkim ASN1_GENERALIZEDTIME_free(asn1_time); 1018280304Sjkim goto err; 1019280304Sjkim } 1020238384Sjkim 1021280304Sjkim return asn1_time; 1022238384Sjkim err: 1023280304Sjkim TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME); 1024280304Sjkim return NULL; 1025280304Sjkim} 1026