1/* $OpenBSD: ssh-pkcs11.c,v 1.26 2018/02/07 02:06:51 jsing 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#include "openbsd-compat/openssl-compat.h" 34 35#include <openssl/x509.h> 36 37#define CRYPTOKI_COMPAT 38#include "pkcs11.h" 39 40#include "log.h" 41#include "misc.h" 42#include "sshkey.h" 43#include "ssh-pkcs11.h" 44#include "xmalloc.h" 45 46struct pkcs11_slotinfo { 47 CK_TOKEN_INFO token; 48 CK_SESSION_HANDLE session; 49 int logged_in; 50}; 51 52struct pkcs11_provider { 53 char *name; 54 void *handle; 55 CK_FUNCTION_LIST *function_list; 56 CK_INFO info; 57 CK_ULONG nslots; 58 CK_SLOT_ID *slotlist; 59 struct pkcs11_slotinfo *slotinfo; 60 int valid; 61 int refcount; 62 TAILQ_ENTRY(pkcs11_provider) next; 63}; 64 65TAILQ_HEAD(, pkcs11_provider) pkcs11_providers; 66 67struct pkcs11_key { 68 struct pkcs11_provider *provider; 69 CK_ULONG slotidx; 70 int (*orig_finish)(RSA *rsa); 71 RSA_METHOD *rsa_method; 72 char *keyid; 73 int keyid_len; 74}; 75 76int pkcs11_interactive = 0; 77 78int 79pkcs11_init(int interactive) 80{ 81 pkcs11_interactive = interactive; 82 TAILQ_INIT(&pkcs11_providers); 83 return (0); 84} 85 86/* 87 * finalize a provider shared libarary, it's no longer usable. 88 * however, there might still be keys referencing this provider, 89 * so the actuall freeing of memory is handled by pkcs11_provider_unref(). 90 * this is called when a provider gets unregistered. 91 */ 92static void 93pkcs11_provider_finalize(struct pkcs11_provider *p) 94{ 95 CK_RV rv; 96 CK_ULONG i; 97 98 debug("pkcs11_provider_finalize: %p refcount %d valid %d", 99 p, p->refcount, p->valid); 100 if (!p->valid) 101 return; 102 for (i = 0; i < p->nslots; i++) { 103 if (p->slotinfo[i].session && 104 (rv = p->function_list->C_CloseSession( 105 p->slotinfo[i].session)) != CKR_OK) 106 error("C_CloseSession failed: %lu", rv); 107 } 108 if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK) 109 error("C_Finalize failed: %lu", rv); 110 p->valid = 0; 111 p->function_list = NULL; 112 dlclose(p->handle); 113} 114 115/* 116 * remove a reference to the provider. 117 * called when a key gets destroyed or when the provider is unregistered. 118 */ 119static void 120pkcs11_provider_unref(struct pkcs11_provider *p) 121{ 122 debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount); 123 if (--p->refcount <= 0) { 124 if (p->valid) 125 error("pkcs11_provider_unref: %p still valid", p); 126 free(p->slotlist); 127 free(p->slotinfo); 128 free(p); 129 } 130} 131 132/* unregister all providers, keys might still point to the providers */ 133void 134pkcs11_terminate(void) 135{ 136 struct pkcs11_provider *p; 137 138 while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) { 139 TAILQ_REMOVE(&pkcs11_providers, p, next); 140 pkcs11_provider_finalize(p); 141 pkcs11_provider_unref(p); 142 } 143} 144 145/* lookup provider by name */ 146static struct pkcs11_provider * 147pkcs11_provider_lookup(char *provider_id) 148{ 149 struct pkcs11_provider *p; 150 151 TAILQ_FOREACH(p, &pkcs11_providers, next) { 152 debug("check %p %s", p, p->name); 153 if (!strcmp(provider_id, p->name)) 154 return (p); 155 } 156 return (NULL); 157} 158 159/* unregister provider by name */ 160int 161pkcs11_del_provider(char *provider_id) 162{ 163 struct pkcs11_provider *p; 164 165 if ((p = pkcs11_provider_lookup(provider_id)) != NULL) { 166 TAILQ_REMOVE(&pkcs11_providers, p, next); 167 pkcs11_provider_finalize(p); 168 pkcs11_provider_unref(p); 169 return (0); 170 } 171 return (-1); 172} 173 174/* openssl callback for freeing an RSA key */ 175static int 176pkcs11_rsa_finish(RSA *rsa) 177{ 178 struct pkcs11_key *k11; 179 int rv = -1; 180 181 if ((k11 = RSA_get_app_data(rsa)) != NULL) { 182 if (k11->orig_finish) 183 rv = k11->orig_finish(rsa); 184 if (k11->provider) 185 pkcs11_provider_unref(k11->provider); 186 RSA_meth_free(k11->rsa_method); 187 free(k11->keyid); 188 free(k11); 189 } 190 return (rv); 191} 192 193/* find a single 'obj' for given attributes */ 194static int 195pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr, 196 CK_ULONG nattr, CK_OBJECT_HANDLE *obj) 197{ 198 CK_FUNCTION_LIST *f; 199 CK_SESSION_HANDLE session; 200 CK_ULONG nfound = 0; 201 CK_RV rv; 202 int ret = -1; 203 204 f = p->function_list; 205 session = p->slotinfo[slotidx].session; 206 if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) { 207 error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv); 208 return (-1); 209 } 210 if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK || 211 nfound != 1) { 212 debug("C_FindObjects failed (nfound %lu nattr %lu): %lu", 213 nfound, nattr, rv); 214 } else 215 ret = 0; 216 if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) 217 error("C_FindObjectsFinal failed: %lu", rv); 218 return (ret); 219} 220 221/* openssl callback doing the actual signing operation */ 222static int 223pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa, 224 int padding) 225{ 226 struct pkcs11_key *k11; 227 struct pkcs11_slotinfo *si; 228 CK_FUNCTION_LIST *f; 229 CK_OBJECT_HANDLE obj; 230 CK_ULONG tlen = 0; 231 CK_RV rv; 232 CK_OBJECT_CLASS private_key_class = CKO_PRIVATE_KEY; 233 CK_BBOOL true_val = CK_TRUE; 234 CK_MECHANISM mech = { 235 CKM_RSA_PKCS, NULL_PTR, 0 236 }; 237 CK_ATTRIBUTE key_filter[] = { 238 {CKA_CLASS, NULL, sizeof(private_key_class) }, 239 {CKA_ID, NULL, 0}, 240 {CKA_SIGN, NULL, sizeof(true_val) } 241 }; 242 char *pin = NULL, prompt[1024]; 243 int rval = -1; 244 245 key_filter[0].pValue = &private_key_class; 246 key_filter[2].pValue = &true_val; 247 248 if ((k11 = RSA_get_app_data(rsa)) == NULL) { 249 error("RSA_get_app_data failed for rsa %p", rsa); 250 return (-1); 251 } 252 if (!k11->provider || !k11->provider->valid) { 253 error("no pkcs11 (valid) provider for rsa %p", rsa); 254 return (-1); 255 } 256 f = k11->provider->function_list; 257 si = &k11->provider->slotinfo[k11->slotidx]; 258 if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) { 259 if (!pkcs11_interactive) { 260 error("need pin entry%s", (si->token.flags & 261 CKF_PROTECTED_AUTHENTICATION_PATH) ? 262 " on reader keypad" : ""); 263 return (-1); 264 } 265 if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) 266 verbose("Deferring PIN entry to reader keypad."); 267 else { 268 snprintf(prompt, sizeof(prompt), 269 "Enter PIN for '%s': ", si->token.label); 270 pin = read_passphrase(prompt, RP_ALLOW_EOF); 271 if (pin == NULL) 272 return (-1); /* bail out */ 273 } 274 rv = f->C_Login(si->session, CKU_USER, (u_char *)pin, 275 (pin != NULL) ? strlen(pin) : 0); 276 if (pin != NULL) { 277 explicit_bzero(pin, strlen(pin)); 278 free(pin); 279 } 280 if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { 281 error("C_Login failed: %lu", rv); 282 return (-1); 283 } 284 si->logged_in = 1; 285 } 286 key_filter[1].pValue = k11->keyid; 287 key_filter[1].ulValueLen = k11->keyid_len; 288 /* try to find object w/CKA_SIGN first, retry w/o */ 289 if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 && 290 pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) { 291 error("cannot find private key"); 292 } else if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) { 293 error("C_SignInit failed: %lu", rv); 294 } else { 295 /* XXX handle CKR_BUFFER_TOO_SMALL */ 296 tlen = RSA_size(rsa); 297 rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen); 298 if (rv == CKR_OK) 299 rval = tlen; 300 else 301 error("C_Sign failed: %lu", rv); 302 } 303 return (rval); 304} 305 306static int 307pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa, 308 int padding) 309{ 310 return (-1); 311} 312 313/* redirect private key operations for rsa key to pkcs11 token */ 314static int 315pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx, 316 CK_ATTRIBUTE *keyid_attrib, RSA *rsa) 317{ 318 struct pkcs11_key *k11; 319 const RSA_METHOD *def = RSA_get_default_method(); 320 321 k11 = xcalloc(1, sizeof(*k11)); 322 k11->provider = provider; 323 provider->refcount++; /* provider referenced by RSA key */ 324 k11->slotidx = slotidx; 325 /* identify key object on smartcard */ 326 k11->keyid_len = keyid_attrib->ulValueLen; 327 if (k11->keyid_len > 0) { 328 k11->keyid = xmalloc(k11->keyid_len); 329 memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len); 330 } 331 k11->rsa_method = RSA_meth_dup(def); 332 if (k11->rsa_method == NULL) 333 fatal("%s: RSA_meth_dup failed", __func__); 334 k11->orig_finish = RSA_meth_get_finish(def); 335 if (!RSA_meth_set1_name(k11->rsa_method, "pkcs11") || 336 !RSA_meth_set_priv_enc(k11->rsa_method, 337 pkcs11_rsa_private_encrypt) || 338 !RSA_meth_set_priv_dec(k11->rsa_method, 339 pkcs11_rsa_private_decrypt) || 340 !RSA_meth_set_finish(k11->rsa_method, pkcs11_rsa_finish)) 341 fatal("%s: setup pkcs11 method failed", __func__); 342 RSA_set_method(rsa, k11->rsa_method); 343 RSA_set_app_data(rsa, k11); 344 return (0); 345} 346 347/* remove trailing spaces */ 348static void 349rmspace(u_char *buf, size_t len) 350{ 351 size_t i; 352 353 if (!len) 354 return; 355 for (i = len - 1; i > 0; i--) 356 if (i == len - 1 || buf[i] == ' ') 357 buf[i] = '\0'; 358 else 359 break; 360} 361 362/* 363 * open a pkcs11 session and login if required. 364 * if pin == NULL we delay login until key use 365 */ 366static int 367pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin) 368{ 369 CK_RV rv; 370 CK_FUNCTION_LIST *f; 371 CK_SESSION_HANDLE session; 372 int login_required; 373 374 f = p->function_list; 375 login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED; 376 if (pin && login_required && !strlen(pin)) { 377 error("pin required"); 378 return (-1); 379 } 380 if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION| 381 CKF_SERIAL_SESSION, NULL, NULL, &session)) 382 != CKR_OK) { 383 error("C_OpenSession failed: %lu", rv); 384 return (-1); 385 } 386 if (login_required && pin) { 387 rv = f->C_Login(session, CKU_USER, 388 (u_char *)pin, strlen(pin)); 389 if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { 390 error("C_Login failed: %lu", rv); 391 if ((rv = f->C_CloseSession(session)) != CKR_OK) 392 error("C_CloseSession failed: %lu", rv); 393 return (-1); 394 } 395 p->slotinfo[slotidx].logged_in = 1; 396 } 397 p->slotinfo[slotidx].session = session; 398 return (0); 399} 400 401/* 402 * lookup public keys for token in slot identified by slotidx, 403 * add 'wrapped' public keys to the 'keysp' array and increment nkeys. 404 * keysp points to an (possibly empty) array with *nkeys keys. 405 */ 406static int pkcs11_fetch_keys_filter(struct pkcs11_provider *, CK_ULONG, 407 CK_ATTRIBUTE [], CK_ATTRIBUTE [3], struct sshkey ***, int *) 408 __attribute__((__bounded__(__minbytes__,4, 3 * sizeof(CK_ATTRIBUTE)))); 409 410static int 411pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx, 412 struct sshkey ***keysp, int *nkeys) 413{ 414 CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY; 415 CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE; 416 CK_ATTRIBUTE pubkey_filter[] = { 417 { CKA_CLASS, NULL, sizeof(pubkey_class) } 418 }; 419 CK_ATTRIBUTE cert_filter[] = { 420 { CKA_CLASS, NULL, sizeof(cert_class) } 421 }; 422 CK_ATTRIBUTE pubkey_attribs[] = { 423 { CKA_ID, NULL, 0 }, 424 { CKA_MODULUS, NULL, 0 }, 425 { CKA_PUBLIC_EXPONENT, NULL, 0 } 426 }; 427 CK_ATTRIBUTE cert_attribs[] = { 428 { CKA_ID, NULL, 0 }, 429 { CKA_SUBJECT, NULL, 0 }, 430 { CKA_VALUE, NULL, 0 } 431 }; 432 pubkey_filter[0].pValue = &pubkey_class; 433 cert_filter[0].pValue = &cert_class; 434 435 if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, pubkey_attribs, 436 keysp, nkeys) < 0 || 437 pkcs11_fetch_keys_filter(p, slotidx, cert_filter, cert_attribs, 438 keysp, nkeys) < 0) 439 return (-1); 440 return (0); 441} 442 443static int 444pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key) 445{ 446 int i; 447 448 for (i = 0; i < *nkeys; i++) 449 if (sshkey_equal(key, (*keysp)[i])) 450 return (1); 451 return (0); 452} 453 454static int 455have_rsa_key(const RSA *rsa) 456{ 457 const BIGNUM *rsa_n, *rsa_e; 458 459 RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL); 460 return rsa_n != NULL && rsa_e != NULL; 461} 462 463static int 464pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx, 465 CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3], 466 struct sshkey ***keysp, int *nkeys) 467{ 468 struct sshkey *key; 469 RSA *rsa; 470 X509 *x509; 471 EVP_PKEY *evp; 472 int i; 473 const u_char *cp; 474 CK_RV rv; 475 CK_OBJECT_HANDLE obj; 476 CK_ULONG nfound; 477 CK_SESSION_HANDLE session; 478 CK_FUNCTION_LIST *f; 479 480 f = p->function_list; 481 session = p->slotinfo[slotidx].session; 482 /* setup a filter the looks for public keys */ 483 if ((rv = f->C_FindObjectsInit(session, filter, 1)) != CKR_OK) { 484 error("C_FindObjectsInit failed: %lu", rv); 485 return (-1); 486 } 487 while (1) { 488 /* XXX 3 attributes in attribs[] */ 489 for (i = 0; i < 3; i++) { 490 attribs[i].pValue = NULL; 491 attribs[i].ulValueLen = 0; 492 } 493 if ((rv = f->C_FindObjects(session, &obj, 1, &nfound)) != CKR_OK 494 || nfound == 0) 495 break; 496 /* found a key, so figure out size of the attributes */ 497 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 498 != CKR_OK) { 499 error("C_GetAttributeValue failed: %lu", rv); 500 continue; 501 } 502 /* 503 * Allow CKA_ID (always first attribute) to be empty, but 504 * ensure that none of the others are zero length. 505 * XXX assumes CKA_ID is always first. 506 */ 507 if (attribs[1].ulValueLen == 0 || 508 attribs[2].ulValueLen == 0) { 509 continue; 510 } 511 /* allocate buffers for attributes */ 512 for (i = 0; i < 3; i++) { 513 if (attribs[i].ulValueLen > 0) { 514 attribs[i].pValue = xmalloc( 515 attribs[i].ulValueLen); 516 } 517 } 518 519 /* 520 * retrieve ID, modulus and public exponent of RSA key, 521 * or ID, subject and value for certificates. 522 */ 523 rsa = NULL; 524 if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3)) 525 != CKR_OK) { 526 error("C_GetAttributeValue failed: %lu", rv); 527 } else if (attribs[1].type == CKA_MODULUS ) { 528 if ((rsa = RSA_new()) == NULL) { 529 error("RSA_new failed"); 530 } else { 531 BIGNUM *rsa_n, *rsa_e; 532 533 rsa_n = BN_bin2bn(attribs[1].pValue, 534 attribs[1].ulValueLen, NULL); 535 rsa_e = BN_bin2bn(attribs[2].pValue, 536 attribs[2].ulValueLen, NULL); 537 if (rsa_n != NULL && rsa_e != NULL) { 538 if (!RSA_set0_key(rsa, 539 rsa_n, rsa_e, NULL)) 540 fatal("%s: set key", __func__); 541 rsa_n = rsa_e = NULL; /* transferred */ 542 } 543 BN_free(rsa_n); 544 BN_free(rsa_e); 545 } 546 } else { 547 cp = attribs[2].pValue; 548 if ((x509 = X509_new()) == NULL) { 549 error("X509_new failed"); 550 } else if (d2i_X509(&x509, &cp, attribs[2].ulValueLen) 551 == NULL) { 552 error("d2i_X509 failed"); 553 } else if ((evp = X509_get_pubkey(x509)) == NULL || 554 EVP_PKEY_base_id(evp) != EVP_PKEY_RSA || 555 EVP_PKEY_get0_RSA(evp) == NULL) { 556 debug("X509_get_pubkey failed or no rsa"); 557 } else if ((rsa = RSAPublicKey_dup( 558 EVP_PKEY_get0_RSA(evp))) == NULL) { 559 error("RSAPublicKey_dup"); 560 } 561 X509_free(x509); 562 } 563 if (rsa && have_rsa_key(rsa) && 564 pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) { 565 if ((key = sshkey_new(KEY_UNSPEC)) == NULL) 566 fatal("sshkey_new failed"); 567 key->rsa = rsa; 568 key->type = KEY_RSA; 569 key->flags |= SSHKEY_FLAG_EXT; 570 if (pkcs11_key_included(keysp, nkeys, key)) { 571 sshkey_free(key); 572 } else { 573 /* expand key array and add key */ 574 *keysp = xrecallocarray(*keysp, *nkeys, 575 *nkeys + 1, sizeof(struct sshkey *)); 576 (*keysp)[*nkeys] = key; 577 *nkeys = *nkeys + 1; 578 debug("have %d keys", *nkeys); 579 } 580 } else if (rsa) { 581 RSA_free(rsa); 582 } 583 for (i = 0; i < 3; i++) 584 free(attribs[i].pValue); 585 } 586 if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) 587 error("C_FindObjectsFinal failed: %lu", rv); 588 return (0); 589} 590 591/* register a new provider, fails if provider already exists */ 592int 593pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp) 594{ 595 int nkeys, need_finalize = 0; 596 struct pkcs11_provider *p = NULL; 597 void *handle = NULL; 598 CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **); 599 CK_RV rv; 600 CK_FUNCTION_LIST *f = NULL; 601 CK_TOKEN_INFO *token; 602 CK_ULONG i; 603 604 *keyp = NULL; 605 if (pkcs11_provider_lookup(provider_id) != NULL) { 606 debug("%s: provider already registered: %s", 607 __func__, provider_id); 608 goto fail; 609 } 610 /* open shared pkcs11-libarary */ 611 if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) { 612 error("dlopen %s failed: %s", provider_id, dlerror()); 613 goto fail; 614 } 615 if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) { 616 error("dlsym(C_GetFunctionList) failed: %s", dlerror()); 617 goto fail; 618 } 619 p = xcalloc(1, sizeof(*p)); 620 p->name = xstrdup(provider_id); 621 p->handle = handle; 622 /* setup the pkcs11 callbacks */ 623 if ((rv = (*getfunctionlist)(&f)) != CKR_OK) { 624 error("C_GetFunctionList for provider %s failed: %lu", 625 provider_id, rv); 626 goto fail; 627 } 628 p->function_list = f; 629 if ((rv = f->C_Initialize(NULL)) != CKR_OK) { 630 error("C_Initialize for provider %s failed: %lu", 631 provider_id, rv); 632 goto fail; 633 } 634 need_finalize = 1; 635 if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) { 636 error("C_GetInfo for provider %s failed: %lu", 637 provider_id, rv); 638 goto fail; 639 } 640 rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID)); 641 rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription)); 642 debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d" 643 " libraryDescription <%s> libraryVersion %d.%d", 644 provider_id, 645 p->info.manufacturerID, 646 p->info.cryptokiVersion.major, 647 p->info.cryptokiVersion.minor, 648 p->info.libraryDescription, 649 p->info.libraryVersion.major, 650 p->info.libraryVersion.minor); 651 if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) { 652 error("C_GetSlotList failed: %lu", rv); 653 goto fail; 654 } 655 if (p->nslots == 0) { 656 debug("%s: provider %s returned no slots", __func__, 657 provider_id); 658 goto fail; 659 } 660 p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID)); 661 if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots)) 662 != CKR_OK) { 663 error("C_GetSlotList for provider %s failed: %lu", 664 provider_id, rv); 665 goto fail; 666 } 667 p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo)); 668 p->valid = 1; 669 nkeys = 0; 670 for (i = 0; i < p->nslots; i++) { 671 token = &p->slotinfo[i].token; 672 if ((rv = f->C_GetTokenInfo(p->slotlist[i], token)) 673 != CKR_OK) { 674 error("C_GetTokenInfo for provider %s slot %lu " 675 "failed: %lu", provider_id, (unsigned long)i, rv); 676 continue; 677 } 678 if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) { 679 debug2("%s: ignoring uninitialised token in " 680 "provider %s slot %lu", __func__, 681 provider_id, (unsigned long)i); 682 continue; 683 } 684 rmspace(token->label, sizeof(token->label)); 685 rmspace(token->manufacturerID, sizeof(token->manufacturerID)); 686 rmspace(token->model, sizeof(token->model)); 687 rmspace(token->serialNumber, sizeof(token->serialNumber)); 688 debug("provider %s slot %lu: label <%s> manufacturerID <%s> " 689 "model <%s> serial <%s> flags 0x%lx", 690 provider_id, (unsigned long)i, 691 token->label, token->manufacturerID, token->model, 692 token->serialNumber, token->flags); 693 /* open session, login with pin and retrieve public keys */ 694 if (pkcs11_open_session(p, i, pin) == 0) 695 pkcs11_fetch_keys(p, i, keyp, &nkeys); 696 } 697 if (nkeys > 0) { 698 TAILQ_INSERT_TAIL(&pkcs11_providers, p, next); 699 p->refcount++; /* add to provider list */ 700 return (nkeys); 701 } 702 debug("%s: provider %s returned no keys", __func__, provider_id); 703 /* don't add the provider, since it does not have any keys */ 704fail: 705 if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK) 706 error("C_Finalize for provider %s failed: %lu", 707 provider_id, rv); 708 if (p) { 709 free(p->slotlist); 710 free(p->slotinfo); 711 free(p); 712 } 713 if (handle) 714 dlclose(handle); 715 return (-1); 716} 717 718#else 719 720int 721pkcs11_init(int interactive) 722{ 723 return (0); 724} 725 726void 727pkcs11_terminate(void) 728{ 729 return; 730} 731 732#endif /* ENABLE_PKCS11 */ 733