1 /* $OpenBSD: ssh-pkcs11.c,v 1.23 2016/10/28 03:33:52 djm 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 "sshkey.h" 42 #include "ssh-pkcs11.h" 43 #include "xmalloc.h" 44 45 struct pkcs11_slotinfo { 46 CK_TOKEN_INFO token; 47 CK_SESSION_HANDLE session; 48 int logged_in; 49 }; 50 51 struct 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 64 TAILQ_HEAD(, pkcs11_provider) pkcs11_providers; 65 66 struct 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 75 int pkcs11_interactive = 0; 76 77 int 78 pkcs11_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 */ 91 static void 92 pkcs11_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 */ 118 static void 119 pkcs11_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 */ 132 void 133 pkcs11_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 */ 145 static struct pkcs11_provider * 146 pkcs11_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 */ 159 int 160 pkcs11_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 */ 174 static int 175 pkcs11_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 */ 192 static int 193 pkcs11_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 */ 220 static int 221 pkcs11_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 = NULL, 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 entry%s", (si->token.flags & 259 CKF_PROTECTED_AUTHENTICATION_PATH) ? 260 " on reader keypad" : ""); 261 return (-1); 262 } 263 if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) 264 verbose("Deferring PIN entry to reader keypad."); 265 else { 266 snprintf(prompt, sizeof(prompt), 267 "Enter PIN for '%s': ", si->token.label); 268 pin = read_passphrase(prompt, RP_ALLOW_EOF); 269 if (pin == NULL) 270 return (-1); /* bail out */ 271 } 272 rv = f->C_Login(si->session, CKU_USER, (u_char *)pin, 273 (pin != NULL) ? strlen(pin) : 0); 274 if (pin != NULL) { 275 explicit_bzero(pin, strlen(pin)); 276 free(pin); 277 } 278 if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { 279 error("C_Login failed: %lu", rv); 280 return (-1); 281 } 282 si->logged_in = 1; 283 } 284 key_filter[1].pValue = k11->keyid; 285 key_filter[1].ulValueLen = k11->keyid_len; 286 /* try to find object w/CKA_SIGN first, retry w/o */ 287 if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 && 288 pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) { 289 error("cannot find private key"); 290 } else if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) { 291 error("C_SignInit failed: %lu", rv); 292 } else { 293 /* XXX handle CKR_BUFFER_TOO_SMALL */ 294 tlen = RSA_size(rsa); 295 rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen); 296 if (rv == CKR_OK) 297 rval = tlen; 298 else 299 error("C_Sign failed: %lu", rv); 300 } 301 return (rval); 302 } 303 304 static int 305 pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa, 306 int padding) 307 { 308 return (-1); 309 } 310 311 /* redirect private key operations for rsa key to pkcs11 token */ 312 static int 313 pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx, 314 CK_ATTRIBUTE *keyid_attrib, RSA *rsa) 315 { 316 struct pkcs11_key *k11; 317 const RSA_METHOD *def = RSA_get_default_method(); 318 319 k11 = xcalloc(1, sizeof(*k11)); 320 k11->provider = provider; 321 provider->refcount++; /* provider referenced by RSA key */ 322 k11->slotidx = slotidx; 323 /* identify key object on smartcard */ 324 k11->keyid_len = keyid_attrib->ulValueLen; 325 if (k11->keyid_len > 0) { 326 k11->keyid = xmalloc(k11->keyid_len); 327 memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len); 328 } 329 k11->orig_finish = def->finish; 330 memcpy(&k11->rsa_method, def, sizeof(k11->rsa_method)); 331 k11->rsa_method.name = "pkcs11"; 332 k11->rsa_method.rsa_priv_enc = pkcs11_rsa_private_encrypt; 333 k11->rsa_method.rsa_priv_dec = pkcs11_rsa_private_decrypt; 334 k11->rsa_method.finish = pkcs11_rsa_finish; 335 RSA_set_method(rsa, &k11->rsa_method); 336 RSA_set_app_data(rsa, k11); 337 return (0); 338 } 339 340 /* remove trailing spaces */ 341 static void 342 rmspace(u_char *buf, size_t len) 343 { 344 size_t i; 345 346 if (!len) 347 return; 348 for (i = len - 1; i > 0; i--) 349 if (i == len - 1 || buf[i] == ' ') 350 buf[i] = '\0'; 351 else 352 break; 353 } 354 355 /* 356 * open a pkcs11 session and login if required. 357 * if pin == NULL we delay login until key use 358 */ 359 static int 360 pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin) 361 { 362 CK_RV rv; 363 CK_FUNCTION_LIST *f; 364 CK_SESSION_HANDLE session; 365 int login_required; 366 367 f = p->function_list; 368 login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED; 369 if (pin && login_required && !strlen(pin)) { 370 error("pin required"); 371 return (-1); 372 } 373 if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION| 374 CKF_SERIAL_SESSION, NULL, NULL, &session)) 375 != CKR_OK) { 376 error("C_OpenSession failed: %lu", rv); 377 return (-1); 378 } 379 if (login_required && pin) { 380 rv = f->C_Login(session, CKU_USER, 381 (u_char *)pin, strlen(pin)); 382 if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { 383 error("C_Login failed: %lu", rv); 384 if ((rv = f->C_CloseSession(session)) != CKR_OK) 385 error("C_CloseSession failed: %lu", rv); 386 return (-1); 387 } 388 p->slotinfo[slotidx].logged_in = 1; 389 } 390 p->slotinfo[slotidx].session = session; 391 return (0); 392 } 393 394 /* 395 * lookup public keys for token in slot identified by slotidx, 396 * add 'wrapped' public keys to the 'keysp' array and increment nkeys. 397 * keysp points to an (possibly empty) array with *nkeys keys. 398 */ 399 static int pkcs11_fetch_keys_filter(struct pkcs11_provider *, CK_ULONG, 400 CK_ATTRIBUTE [], CK_ATTRIBUTE [3], struct sshkey ***, int *) 401 __attribute__((__bounded__(__minbytes__,4, 3 * sizeof(CK_ATTRIBUTE)))); 402 403 static int 404 pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx, 405 struct sshkey ***keysp, int *nkeys) 406 { 407 CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY; 408 CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE; 409 CK_ATTRIBUTE pubkey_filter[] = { 410 { CKA_CLASS, NULL, sizeof(pubkey_class) } 411 }; 412 CK_ATTRIBUTE cert_filter[] = { 413 { CKA_CLASS, NULL, sizeof(cert_class) } 414 }; 415 CK_ATTRIBUTE pubkey_attribs[] = { 416 { CKA_ID, NULL, 0 }, 417 { CKA_MODULUS, NULL, 0 }, 418 { CKA_PUBLIC_EXPONENT, NULL, 0 } 419 }; 420 CK_ATTRIBUTE cert_attribs[] = { 421 { CKA_ID, NULL, 0 }, 422 { CKA_SUBJECT, NULL, 0 }, 423 { CKA_VALUE, NULL, 0 } 424 }; 425 pubkey_filter[0].pValue = &pubkey_class; 426 cert_filter[0].pValue = &cert_class; 427 428 if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, pubkey_attribs, 429 keysp, nkeys) < 0 || 430 pkcs11_fetch_keys_filter(p, slotidx, cert_filter, cert_attribs, 431 keysp, nkeys) < 0) 432 return (-1); 433 return (0); 434 } 435 436 static int 437 pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key) 438 { 439 int i; 440 441 for (i = 0; i < *nkeys; i++) 442 if (sshkey_equal(key, (*keysp)[i])) 443 return (1); 444 return (0); 445 } 446 447 static int 448 pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx, 449 CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3], 450 struct sshkey ***keysp, int *nkeys) 451 { 452 struct sshkey *key; 453 RSA *rsa; 454 X509 *x509; 455 EVP_PKEY *evp; 456 int i; 457 const u_char *cp; 458 CK_RV rv; 459 CK_OBJECT_HANDLE obj; 460 CK_ULONG nfound; 461 CK_SESSION_HANDLE session; 462 CK_FUNCTION_LIST *f; 463 464 f = p->function_list; 465 session = p->slotinfo[slotidx].session; 466 /* setup a filter the looks for public keys */ 467 if ((rv = f->C_FindObjectsInit(session, filter, 1)) != CKR_OK) { 468 error("C_FindObjectsInit failed: %lu", rv); 469 return (-1); 470 } 471 while (1) { 472 /* XXX 3 attributes in attribs[] */ 473 for (i = 0; i < 3; i++) { 474 attribs[i].pValue = NULL; 475 attribs[i].ulValueLen = 0; 476 } 477 if ((rv = f->C_FindObjects(session, &obj, 1, &nfound)) != CKR_OK 478 || nfound == 0) 479 break; 480 /* found a key, so figure out size of the attributes */ 481 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 482 != CKR_OK) { 483 error("C_GetAttributeValue failed: %lu", rv); 484 continue; 485 } 486 /* 487 * Allow CKA_ID (always first attribute) to be empty, but 488 * ensure that none of the others are zero length. 489 * XXX assumes CKA_ID is always first. 490 */ 491 if (attribs[1].ulValueLen == 0 || 492 attribs[2].ulValueLen == 0) { 493 continue; 494 } 495 /* allocate buffers for attributes */ 496 for (i = 0; i < 3; i++) { 497 if (attribs[i].ulValueLen > 0) { 498 attribs[i].pValue = xmalloc( 499 attribs[i].ulValueLen); 500 } 501 } 502 503 /* 504 * retrieve ID, modulus and public exponent of RSA key, 505 * or ID, subject and value for certificates. 506 */ 507 rsa = NULL; 508 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 509 != CKR_OK) { 510 error("C_GetAttributeValue failed: %lu", rv); 511 } else if (attribs[1].type == CKA_MODULUS ) { 512 if ((rsa = RSA_new()) == NULL) { 513 error("RSA_new failed"); 514 } else { 515 rsa->n = BN_bin2bn(attribs[1].pValue, 516 attribs[1].ulValueLen, NULL); 517 rsa->e = BN_bin2bn(attribs[2].pValue, 518 attribs[2].ulValueLen, NULL); 519 } 520 } else { 521 cp = attribs[2].pValue; 522 if ((x509 = X509_new()) == NULL) { 523 error("X509_new failed"); 524 } else if (d2i_X509(&x509, &cp, attribs[2].ulValueLen) 525 == NULL) { 526 error("d2i_X509 failed"); 527 } else if ((evp = X509_get_pubkey(x509)) == NULL || 528 evp->type != EVP_PKEY_RSA || 529 evp->pkey.rsa == NULL) { 530 debug("X509_get_pubkey failed or no rsa"); 531 } else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa)) 532 == NULL) { 533 error("RSAPublicKey_dup"); 534 } 535 if (x509) 536 X509_free(x509); 537 } 538 if (rsa && rsa->n && rsa->e && 539 pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) { 540 key = sshkey_new(KEY_UNSPEC); 541 key->rsa = rsa; 542 key->type = KEY_RSA; 543 key->flags |= SSHKEY_FLAG_EXT; 544 if (pkcs11_key_included(keysp, nkeys, key)) { 545 sshkey_free(key); 546 } else { 547 /* expand key array and add key */ 548 *keysp = xreallocarray(*keysp, *nkeys + 1, 549 sizeof(struct sshkey *)); 550 (*keysp)[*nkeys] = key; 551 *nkeys = *nkeys + 1; 552 debug("have %d keys", *nkeys); 553 } 554 } else if (rsa) { 555 RSA_free(rsa); 556 } 557 for (i = 0; i < 3; i++) 558 free(attribs[i].pValue); 559 } 560 if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) 561 error("C_FindObjectsFinal failed: %lu", rv); 562 return (0); 563 } 564 565 /* register a new provider, fails if provider already exists */ 566 int 567 pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp) 568 { 569 int nkeys, need_finalize = 0; 570 struct pkcs11_provider *p = NULL; 571 void *handle = NULL; 572 CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **); 573 CK_RV rv; 574 CK_FUNCTION_LIST *f = NULL; 575 CK_TOKEN_INFO *token; 576 CK_ULONG i; 577 578 *keyp = NULL; 579 if (pkcs11_provider_lookup(provider_id) != NULL) { 580 debug("%s: provider already registered: %s", 581 __func__, provider_id); 582 goto fail; 583 } 584 /* open shared pkcs11-libarary */ 585 if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) { 586 error("dlopen %s failed: %s", provider_id, dlerror()); 587 goto fail; 588 } 589 if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) { 590 error("dlsym(C_GetFunctionList) failed: %s", dlerror()); 591 goto fail; 592 } 593 p = xcalloc(1, sizeof(*p)); 594 p->name = xstrdup(provider_id); 595 p->handle = handle; 596 /* setup the pkcs11 callbacks */ 597 if ((rv = (*getfunctionlist)(&f)) != CKR_OK) { 598 error("C_GetFunctionList for provider %s failed: %lu", 599 provider_id, rv); 600 goto fail; 601 } 602 p->function_list = f; 603 if ((rv = f->C_Initialize(NULL)) != CKR_OK) { 604 error("C_Initialize for provider %s failed: %lu", 605 provider_id, rv); 606 goto fail; 607 } 608 need_finalize = 1; 609 if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) { 610 error("C_GetInfo for provider %s failed: %lu", 611 provider_id, rv); 612 goto fail; 613 } 614 rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID)); 615 rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription)); 616 debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d" 617 " libraryDescription <%s> libraryVersion %d.%d", 618 provider_id, 619 p->info.manufacturerID, 620 p->info.cryptokiVersion.major, 621 p->info.cryptokiVersion.minor, 622 p->info.libraryDescription, 623 p->info.libraryVersion.major, 624 p->info.libraryVersion.minor); 625 if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) { 626 error("C_GetSlotList failed: %lu", rv); 627 goto fail; 628 } 629 if (p->nslots == 0) { 630 debug("%s: provider %s returned no slots", __func__, 631 provider_id); 632 goto fail; 633 } 634 p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID)); 635 if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots)) 636 != CKR_OK) { 637 error("C_GetSlotList for provider %s failed: %lu", 638 provider_id, rv); 639 goto fail; 640 } 641 p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo)); 642 p->valid = 1; 643 nkeys = 0; 644 for (i = 0; i < p->nslots; i++) { 645 token = &p->slotinfo[i].token; 646 if ((rv = f->C_GetTokenInfo(p->slotlist[i], token)) 647 != CKR_OK) { 648 error("C_GetTokenInfo for provider %s slot %lu " 649 "failed: %lu", provider_id, (unsigned long)i, rv); 650 continue; 651 } 652 if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) { 653 debug2("%s: ignoring uninitialised token in " 654 "provider %s slot %lu", __func__, 655 provider_id, (unsigned long)i); 656 continue; 657 } 658 rmspace(token->label, sizeof(token->label)); 659 rmspace(token->manufacturerID, sizeof(token->manufacturerID)); 660 rmspace(token->model, sizeof(token->model)); 661 rmspace(token->serialNumber, sizeof(token->serialNumber)); 662 debug("provider %s slot %lu: label <%s> manufacturerID <%s> " 663 "model <%s> serial <%s> flags 0x%lx", 664 provider_id, (unsigned long)i, 665 token->label, token->manufacturerID, token->model, 666 token->serialNumber, token->flags); 667 /* open session, login with pin and retrieve public keys */ 668 if (pkcs11_open_session(p, i, pin) == 0) 669 pkcs11_fetch_keys(p, i, keyp, &nkeys); 670 } 671 if (nkeys > 0) { 672 TAILQ_INSERT_TAIL(&pkcs11_providers, p, next); 673 p->refcount++; /* add to provider list */ 674 return (nkeys); 675 } 676 debug("%s: provider %s returned no keys", __func__, provider_id); 677 /* don't add the provider, since it does not have any keys */ 678 fail: 679 if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK) 680 error("C_Finalize for provider %s failed: %lu", 681 provider_id, rv); 682 if (p) { 683 free(p->slotlist); 684 free(p->slotinfo); 685 free(p); 686 } 687 if (handle) 688 dlclose(handle); 689 return (-1); 690 } 691 692 #else 693 694 int 695 pkcs11_init(int interactive) 696 { 697 return (0); 698 } 699 700 void 701 pkcs11_terminate(void) 702 { 703 return; 704 } 705 706 #endif /* ENABLE_PKCS11 */ 707