ssh-pkcs11.c revision 262566
1/* $OpenBSD: ssh-pkcs11.c,v 1.11 2013/11/13 13:48:20 markus Exp $ */ 2/* 3 * Copyright (c) 2010 Markus Friedl. All rights reserved. 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18#include "includes.h" 19 20#ifdef ENABLE_PKCS11 21 22#include <sys/types.h> 23#ifdef HAVE_SYS_TIME_H 24# include <sys/time.h> 25#endif 26#include <stdarg.h> 27#include <stdio.h> 28 29#include <string.h> 30#include <dlfcn.h> 31 32#include "openbsd-compat/sys-queue.h" 33 34#include <openssl/x509.h> 35 36#define CRYPTOKI_COMPAT 37#include "pkcs11.h" 38 39#include "log.h" 40#include "misc.h" 41#include "key.h" 42#include "ssh-pkcs11.h" 43#include "xmalloc.h" 44 45struct pkcs11_slotinfo { 46 CK_TOKEN_INFO token; 47 CK_SESSION_HANDLE session; 48 int logged_in; 49}; 50 51struct pkcs11_provider { 52 char *name; 53 void *handle; 54 CK_FUNCTION_LIST *function_list; 55 CK_INFO info; 56 CK_ULONG nslots; 57 CK_SLOT_ID *slotlist; 58 struct pkcs11_slotinfo *slotinfo; 59 int valid; 60 int refcount; 61 TAILQ_ENTRY(pkcs11_provider) next; 62}; 63 64TAILQ_HEAD(, pkcs11_provider) pkcs11_providers; 65 66struct pkcs11_key { 67 struct pkcs11_provider *provider; 68 CK_ULONG slotidx; 69 int (*orig_finish)(RSA *rsa); 70 RSA_METHOD rsa_method; 71 char *keyid; 72 int keyid_len; 73}; 74 75int pkcs11_interactive = 0; 76 77int 78pkcs11_init(int interactive) 79{ 80 pkcs11_interactive = interactive; 81 TAILQ_INIT(&pkcs11_providers); 82 return (0); 83} 84 85/* 86 * finalize a provider shared libarary, it's no longer usable. 87 * however, there might still be keys referencing this provider, 88 * so the actuall freeing of memory is handled by pkcs11_provider_unref(). 89 * this is called when a provider gets unregistered. 90 */ 91static void 92pkcs11_provider_finalize(struct pkcs11_provider *p) 93{ 94 CK_RV rv; 95 CK_ULONG i; 96 97 debug("pkcs11_provider_finalize: %p refcount %d valid %d", 98 p, p->refcount, p->valid); 99 if (!p->valid) 100 return; 101 for (i = 0; i < p->nslots; i++) { 102 if (p->slotinfo[i].session && 103 (rv = p->function_list->C_CloseSession( 104 p->slotinfo[i].session)) != CKR_OK) 105 error("C_CloseSession failed: %lu", rv); 106 } 107 if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK) 108 error("C_Finalize failed: %lu", rv); 109 p->valid = 0; 110 p->function_list = NULL; 111 dlclose(p->handle); 112} 113 114/* 115 * remove a reference to the provider. 116 * called when a key gets destroyed or when the provider is unregistered. 117 */ 118static void 119pkcs11_provider_unref(struct pkcs11_provider *p) 120{ 121 debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount); 122 if (--p->refcount <= 0) { 123 if (p->valid) 124 error("pkcs11_provider_unref: %p still valid", p); 125 free(p->slotlist); 126 free(p->slotinfo); 127 free(p); 128 } 129} 130 131/* unregister all providers, keys might still point to the providers */ 132void 133pkcs11_terminate(void) 134{ 135 struct pkcs11_provider *p; 136 137 while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) { 138 TAILQ_REMOVE(&pkcs11_providers, p, next); 139 pkcs11_provider_finalize(p); 140 pkcs11_provider_unref(p); 141 } 142} 143 144/* lookup provider by name */ 145static struct pkcs11_provider * 146pkcs11_provider_lookup(char *provider_id) 147{ 148 struct pkcs11_provider *p; 149 150 TAILQ_FOREACH(p, &pkcs11_providers, next) { 151 debug("check %p %s", p, p->name); 152 if (!strcmp(provider_id, p->name)) 153 return (p); 154 } 155 return (NULL); 156} 157 158/* unregister provider by name */ 159int 160pkcs11_del_provider(char *provider_id) 161{ 162 struct pkcs11_provider *p; 163 164 if ((p = pkcs11_provider_lookup(provider_id)) != NULL) { 165 TAILQ_REMOVE(&pkcs11_providers, p, next); 166 pkcs11_provider_finalize(p); 167 pkcs11_provider_unref(p); 168 return (0); 169 } 170 return (-1); 171} 172 173/* openssl callback for freeing an RSA key */ 174static int 175pkcs11_rsa_finish(RSA *rsa) 176{ 177 struct pkcs11_key *k11; 178 int rv = -1; 179 180 if ((k11 = RSA_get_app_data(rsa)) != NULL) { 181 if (k11->orig_finish) 182 rv = k11->orig_finish(rsa); 183 if (k11->provider) 184 pkcs11_provider_unref(k11->provider); 185 free(k11->keyid); 186 free(k11); 187 } 188 return (rv); 189} 190 191/* find a single 'obj' for given attributes */ 192static int 193pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr, 194 CK_ULONG nattr, CK_OBJECT_HANDLE *obj) 195{ 196 CK_FUNCTION_LIST *f; 197 CK_SESSION_HANDLE session; 198 CK_ULONG nfound = 0; 199 CK_RV rv; 200 int ret = -1; 201 202 f = p->function_list; 203 session = p->slotinfo[slotidx].session; 204 if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) { 205 error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv); 206 return (-1); 207 } 208 if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK || 209 nfound != 1) { 210 debug("C_FindObjects failed (nfound %lu nattr %lu): %lu", 211 nfound, nattr, rv); 212 } else 213 ret = 0; 214 if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) 215 error("C_FindObjectsFinal failed: %lu", rv); 216 return (ret); 217} 218 219/* openssl callback doing the actual signing operation */ 220static int 221pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa, 222 int padding) 223{ 224 struct pkcs11_key *k11; 225 struct pkcs11_slotinfo *si; 226 CK_FUNCTION_LIST *f; 227 CK_OBJECT_HANDLE obj; 228 CK_ULONG tlen = 0; 229 CK_RV rv; 230 CK_OBJECT_CLASS private_key_class = CKO_PRIVATE_KEY; 231 CK_BBOOL true_val = CK_TRUE; 232 CK_MECHANISM mech = { 233 CKM_RSA_PKCS, NULL_PTR, 0 234 }; 235 CK_ATTRIBUTE key_filter[] = { 236 {CKA_CLASS, NULL, sizeof(private_key_class) }, 237 {CKA_ID, NULL, 0}, 238 {CKA_SIGN, NULL, sizeof(true_val) } 239 }; 240 char *pin, prompt[1024]; 241 int rval = -1; 242 243 key_filter[0].pValue = &private_key_class; 244 key_filter[2].pValue = &true_val; 245 246 if ((k11 = RSA_get_app_data(rsa)) == NULL) { 247 error("RSA_get_app_data failed for rsa %p", rsa); 248 return (-1); 249 } 250 if (!k11->provider || !k11->provider->valid) { 251 error("no pkcs11 (valid) provider for rsa %p", rsa); 252 return (-1); 253 } 254 f = k11->provider->function_list; 255 si = &k11->provider->slotinfo[k11->slotidx]; 256 if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) { 257 if (!pkcs11_interactive) { 258 error("need pin"); 259 return (-1); 260 } 261 snprintf(prompt, sizeof(prompt), "Enter PIN for '%s': ", 262 si->token.label); 263 pin = read_passphrase(prompt, RP_ALLOW_EOF); 264 if (pin == NULL) 265 return (-1); /* bail out */ 266 if ((rv = f->C_Login(si->session, CKU_USER, 267 (u_char *)pin, strlen(pin))) != CKR_OK) { 268 free(pin); 269 error("C_Login failed: %lu", rv); 270 return (-1); 271 } 272 free(pin); 273 si->logged_in = 1; 274 } 275 key_filter[1].pValue = k11->keyid; 276 key_filter[1].ulValueLen = k11->keyid_len; 277 /* try to find object w/CKA_SIGN first, retry w/o */ 278 if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 && 279 pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) { 280 error("cannot find private key"); 281 } else if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) { 282 error("C_SignInit failed: %lu", rv); 283 } else { 284 /* XXX handle CKR_BUFFER_TOO_SMALL */ 285 tlen = RSA_size(rsa); 286 rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen); 287 if (rv == CKR_OK) 288 rval = tlen; 289 else 290 error("C_Sign failed: %lu", rv); 291 } 292 return (rval); 293} 294 295static int 296pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa, 297 int padding) 298{ 299 return (-1); 300} 301 302/* redirect private key operations for rsa key to pkcs11 token */ 303static int 304pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx, 305 CK_ATTRIBUTE *keyid_attrib, RSA *rsa) 306{ 307 struct pkcs11_key *k11; 308 const RSA_METHOD *def = RSA_get_default_method(); 309 310 k11 = xcalloc(1, sizeof(*k11)); 311 k11->provider = provider; 312 provider->refcount++; /* provider referenced by RSA key */ 313 k11->slotidx = slotidx; 314 /* identify key object on smartcard */ 315 k11->keyid_len = keyid_attrib->ulValueLen; 316 k11->keyid = xmalloc(k11->keyid_len); 317 memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len); 318 k11->orig_finish = def->finish; 319 memcpy(&k11->rsa_method, def, sizeof(k11->rsa_method)); 320 k11->rsa_method.name = "pkcs11"; 321 k11->rsa_method.rsa_priv_enc = pkcs11_rsa_private_encrypt; 322 k11->rsa_method.rsa_priv_dec = pkcs11_rsa_private_decrypt; 323 k11->rsa_method.finish = pkcs11_rsa_finish; 324 RSA_set_method(rsa, &k11->rsa_method); 325 RSA_set_app_data(rsa, k11); 326 return (0); 327} 328 329/* remove trailing spaces */ 330static void 331rmspace(u_char *buf, size_t len) 332{ 333 size_t i; 334 335 if (!len) 336 return; 337 for (i = len - 1; i > 0; i--) 338 if (i == len - 1 || buf[i] == ' ') 339 buf[i] = '\0'; 340 else 341 break; 342} 343 344/* 345 * open a pkcs11 session and login if required. 346 * if pin == NULL we delay login until key use 347 */ 348static int 349pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin) 350{ 351 CK_RV rv; 352 CK_FUNCTION_LIST *f; 353 CK_SESSION_HANDLE session; 354 int login_required; 355 356 f = p->function_list; 357 login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED; 358 if (pin && login_required && !strlen(pin)) { 359 error("pin required"); 360 return (-1); 361 } 362 if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION| 363 CKF_SERIAL_SESSION, NULL, NULL, &session)) 364 != CKR_OK) { 365 error("C_OpenSession failed: %lu", rv); 366 return (-1); 367 } 368 if (login_required && pin) { 369 if ((rv = f->C_Login(session, CKU_USER, 370 (u_char *)pin, strlen(pin))) != CKR_OK) { 371 error("C_Login failed: %lu", rv); 372 if ((rv = f->C_CloseSession(session)) != CKR_OK) 373 error("C_CloseSession failed: %lu", rv); 374 return (-1); 375 } 376 p->slotinfo[slotidx].logged_in = 1; 377 } 378 p->slotinfo[slotidx].session = session; 379 return (0); 380} 381 382/* 383 * lookup public keys for token in slot identified by slotidx, 384 * add 'wrapped' public keys to the 'keysp' array and increment nkeys. 385 * keysp points to an (possibly empty) array with *nkeys keys. 386 */ 387static int pkcs11_fetch_keys_filter(struct pkcs11_provider *, CK_ULONG, 388 CK_ATTRIBUTE [], CK_ATTRIBUTE [3], Key ***, int *) 389 __attribute__((__bounded__(__minbytes__,4, 3 * sizeof(CK_ATTRIBUTE)))); 390 391static int 392pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx, 393 Key ***keysp, int *nkeys) 394{ 395 CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY; 396 CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE; 397 CK_ATTRIBUTE pubkey_filter[] = { 398 { CKA_CLASS, NULL, sizeof(pubkey_class) } 399 }; 400 CK_ATTRIBUTE cert_filter[] = { 401 { CKA_CLASS, NULL, sizeof(cert_class) } 402 }; 403 CK_ATTRIBUTE pubkey_attribs[] = { 404 { CKA_ID, NULL, 0 }, 405 { CKA_MODULUS, NULL, 0 }, 406 { CKA_PUBLIC_EXPONENT, NULL, 0 } 407 }; 408 CK_ATTRIBUTE cert_attribs[] = { 409 { CKA_ID, NULL, 0 }, 410 { CKA_SUBJECT, NULL, 0 }, 411 { CKA_VALUE, NULL, 0 } 412 }; 413 pubkey_filter[0].pValue = &pubkey_class; 414 cert_filter[0].pValue = &cert_class; 415 416 if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, pubkey_attribs, 417 keysp, nkeys) < 0 || 418 pkcs11_fetch_keys_filter(p, slotidx, cert_filter, cert_attribs, 419 keysp, nkeys) < 0) 420 return (-1); 421 return (0); 422} 423 424static int 425pkcs11_key_included(Key ***keysp, int *nkeys, Key *key) 426{ 427 int i; 428 429 for (i = 0; i < *nkeys; i++) 430 if (key_equal(key, (*keysp)[i])) 431 return (1); 432 return (0); 433} 434 435static int 436pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx, 437 CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3], 438 Key ***keysp, int *nkeys) 439{ 440 Key *key; 441 RSA *rsa; 442 X509 *x509; 443 EVP_PKEY *evp; 444 int i; 445 const u_char *cp; 446 CK_RV rv; 447 CK_OBJECT_HANDLE obj; 448 CK_ULONG nfound; 449 CK_SESSION_HANDLE session; 450 CK_FUNCTION_LIST *f; 451 452 f = p->function_list; 453 session = p->slotinfo[slotidx].session; 454 /* setup a filter the looks for public keys */ 455 if ((rv = f->C_FindObjectsInit(session, filter, 1)) != CKR_OK) { 456 error("C_FindObjectsInit failed: %lu", rv); 457 return (-1); 458 } 459 while (1) { 460 /* XXX 3 attributes in attribs[] */ 461 for (i = 0; i < 3; i++) { 462 attribs[i].pValue = NULL; 463 attribs[i].ulValueLen = 0; 464 } 465 if ((rv = f->C_FindObjects(session, &obj, 1, &nfound)) != CKR_OK 466 || nfound == 0) 467 break; 468 /* found a key, so figure out size of the attributes */ 469 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 470 != CKR_OK) { 471 error("C_GetAttributeValue failed: %lu", rv); 472 continue; 473 } 474 /* check that none of the attributes are zero length */ 475 if (attribs[0].ulValueLen == 0 || 476 attribs[1].ulValueLen == 0 || 477 attribs[2].ulValueLen == 0) { 478 continue; 479 } 480 /* allocate buffers for attributes */ 481 for (i = 0; i < 3; i++) 482 attribs[i].pValue = xmalloc(attribs[i].ulValueLen); 483 /* 484 * retrieve ID, modulus and public exponent of RSA key, 485 * or ID, subject and value for certificates. 486 */ 487 rsa = NULL; 488 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 489 != CKR_OK) { 490 error("C_GetAttributeValue failed: %lu", rv); 491 } else if (attribs[1].type == CKA_MODULUS ) { 492 if ((rsa = RSA_new()) == NULL) { 493 error("RSA_new failed"); 494 } else { 495 rsa->n = BN_bin2bn(attribs[1].pValue, 496 attribs[1].ulValueLen, NULL); 497 rsa->e = BN_bin2bn(attribs[2].pValue, 498 attribs[2].ulValueLen, NULL); 499 } 500 } else { 501 cp = attribs[2].pValue; 502 if ((x509 = X509_new()) == NULL) { 503 error("X509_new failed"); 504 } else if (d2i_X509(&x509, &cp, attribs[2].ulValueLen) 505 == NULL) { 506 error("d2i_X509 failed"); 507 } else if ((evp = X509_get_pubkey(x509)) == NULL || 508 evp->type != EVP_PKEY_RSA || 509 evp->pkey.rsa == NULL) { 510 debug("X509_get_pubkey failed or no rsa"); 511 } else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa)) 512 == NULL) { 513 error("RSAPublicKey_dup"); 514 } 515 if (x509) 516 X509_free(x509); 517 } 518 if (rsa && rsa->n && rsa->e && 519 pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) { 520 key = key_new(KEY_UNSPEC); 521 key->rsa = rsa; 522 key->type = KEY_RSA; 523 key->flags |= KEY_FLAG_EXT; 524 if (pkcs11_key_included(keysp, nkeys, key)) { 525 key_free(key); 526 } else { 527 /* expand key array and add key */ 528 *keysp = xrealloc(*keysp, *nkeys + 1, 529 sizeof(Key *)); 530 (*keysp)[*nkeys] = key; 531 *nkeys = *nkeys + 1; 532 debug("have %d keys", *nkeys); 533 } 534 } else if (rsa) { 535 RSA_free(rsa); 536 } 537 for (i = 0; i < 3; i++) 538 free(attribs[i].pValue); 539 } 540 if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) 541 error("C_FindObjectsFinal failed: %lu", rv); 542 return (0); 543} 544 545/* register a new provider, fails if provider already exists */ 546int 547pkcs11_add_provider(char *provider_id, char *pin, Key ***keyp) 548{ 549 int nkeys, need_finalize = 0; 550 struct pkcs11_provider *p = NULL; 551 void *handle = NULL; 552 CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **); 553 CK_RV rv; 554 CK_FUNCTION_LIST *f = NULL; 555 CK_TOKEN_INFO *token; 556 CK_ULONG i; 557 558 *keyp = NULL; 559 if (pkcs11_provider_lookup(provider_id) != NULL) { 560 error("provider already registered: %s", provider_id); 561 goto fail; 562 } 563 /* open shared pkcs11-libarary */ 564 if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) { 565 error("dlopen %s failed: %s", provider_id, dlerror()); 566 goto fail; 567 } 568 if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) { 569 error("dlsym(C_GetFunctionList) failed: %s", dlerror()); 570 goto fail; 571 } 572 p = xcalloc(1, sizeof(*p)); 573 p->name = xstrdup(provider_id); 574 p->handle = handle; 575 /* setup the pkcs11 callbacks */ 576 if ((rv = (*getfunctionlist)(&f)) != CKR_OK) { 577 error("C_GetFunctionList failed: %lu", rv); 578 goto fail; 579 } 580 p->function_list = f; 581 if ((rv = f->C_Initialize(NULL)) != CKR_OK) { 582 error("C_Initialize failed: %lu", rv); 583 goto fail; 584 } 585 need_finalize = 1; 586 if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) { 587 error("C_GetInfo failed: %lu", rv); 588 goto fail; 589 } 590 rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID)); 591 rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription)); 592 debug("manufacturerID <%s> cryptokiVersion %d.%d" 593 " libraryDescription <%s> libraryVersion %d.%d", 594 p->info.manufacturerID, 595 p->info.cryptokiVersion.major, 596 p->info.cryptokiVersion.minor, 597 p->info.libraryDescription, 598 p->info.libraryVersion.major, 599 p->info.libraryVersion.minor); 600 if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) { 601 error("C_GetSlotList failed: %lu", rv); 602 goto fail; 603 } 604 if (p->nslots == 0) { 605 error("no slots"); 606 goto fail; 607 } 608 p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID)); 609 if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots)) 610 != CKR_OK) { 611 error("C_GetSlotList failed: %lu", rv); 612 goto fail; 613 } 614 p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo)); 615 p->valid = 1; 616 nkeys = 0; 617 for (i = 0; i < p->nslots; i++) { 618 token = &p->slotinfo[i].token; 619 if ((rv = f->C_GetTokenInfo(p->slotlist[i], token)) 620 != CKR_OK) { 621 error("C_GetTokenInfo failed: %lu", rv); 622 continue; 623 } 624 rmspace(token->label, sizeof(token->label)); 625 rmspace(token->manufacturerID, sizeof(token->manufacturerID)); 626 rmspace(token->model, sizeof(token->model)); 627 rmspace(token->serialNumber, sizeof(token->serialNumber)); 628 debug("label <%s> manufacturerID <%s> model <%s> serial <%s>" 629 " flags 0x%lx", 630 token->label, token->manufacturerID, token->model, 631 token->serialNumber, token->flags); 632 /* open session, login with pin and retrieve public keys */ 633 if (pkcs11_open_session(p, i, pin) == 0) 634 pkcs11_fetch_keys(p, i, keyp, &nkeys); 635 } 636 if (nkeys > 0) { 637 TAILQ_INSERT_TAIL(&pkcs11_providers, p, next); 638 p->refcount++; /* add to provider list */ 639 return (nkeys); 640 } 641 error("no keys"); 642 /* don't add the provider, since it does not have any keys */ 643fail: 644 if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK) 645 error("C_Finalize failed: %lu", rv); 646 if (p) { 647 free(p->slotlist); 648 free(p->slotinfo); 649 free(p); 650 } 651 if (handle) 652 dlclose(handle); 653 return (-1); 654} 655 656#else 657 658int 659pkcs11_init(int interactive) 660{ 661 return (0); 662} 663 664void 665pkcs11_terminate(void) 666{ 667 return; 668} 669 670#endif /* ENABLE_PKCS11 */ 671