Annotation of src/usr.bin/ssh/ssh-pkcs11.c, Revision 1.24
1.24 ! markus 1: /* $OpenBSD: ssh-pkcs11.c,v 1.23 2016/10/28 03:33:52 djm Exp $ */
1.1 markus 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 <sys/types.h>
19: #include <sys/queue.h>
20: #include <stdarg.h>
21: #include <stdio.h>
22:
23: #include <string.h>
24: #include <dlfcn.h>
25:
1.9 markus 26: #include <openssl/x509.h>
27:
1.1 markus 28: #define CRYPTOKI_COMPAT
29: #include "pkcs11.h"
30:
31: #include "log.h"
32: #include "misc.h"
1.15 djm 33: #include "sshkey.h"
1.1 markus 34: #include "ssh-pkcs11.h"
35: #include "xmalloc.h"
36:
37: struct pkcs11_slotinfo {
38: CK_TOKEN_INFO token;
39: CK_SESSION_HANDLE session;
40: int logged_in;
41: };
42:
43: struct pkcs11_provider {
44: char *name;
45: void *handle;
46: CK_FUNCTION_LIST *function_list;
47: CK_INFO info;
48: CK_ULONG nslots;
49: CK_SLOT_ID *slotlist;
50: struct pkcs11_slotinfo *slotinfo;
51: int valid;
52: int refcount;
53: TAILQ_ENTRY(pkcs11_provider) next;
54: };
55:
56: TAILQ_HEAD(, pkcs11_provider) pkcs11_providers;
57:
58: struct pkcs11_key {
59: struct pkcs11_provider *provider;
60: CK_ULONG slotidx;
61: int (*orig_finish)(RSA *rsa);
62: RSA_METHOD rsa_method;
63: char *keyid;
64: int keyid_len;
65: };
66:
67: int pkcs11_interactive = 0;
68:
69: int
70: pkcs11_init(int interactive)
71: {
72: pkcs11_interactive = interactive;
73: TAILQ_INIT(&pkcs11_providers);
74: return (0);
75: }
76:
77: /*
78: * finalize a provider shared libarary, it's no longer usable.
79: * however, there might still be keys referencing this provider,
80: * so the actuall freeing of memory is handled by pkcs11_provider_unref().
81: * this is called when a provider gets unregistered.
82: */
83: static void
84: pkcs11_provider_finalize(struct pkcs11_provider *p)
85: {
86: CK_RV rv;
87: CK_ULONG i;
88:
89: debug("pkcs11_provider_finalize: %p refcount %d valid %d",
90: p, p->refcount, p->valid);
91: if (!p->valid)
92: return;
93: for (i = 0; i < p->nslots; i++) {
94: if (p->slotinfo[i].session &&
95: (rv = p->function_list->C_CloseSession(
96: p->slotinfo[i].session)) != CKR_OK)
97: error("C_CloseSession failed: %lu", rv);
98: }
99: if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK)
100: error("C_Finalize failed: %lu", rv);
101: p->valid = 0;
102: p->function_list = NULL;
1.3 deraadt 103: #ifdef HAVE_DLOPEN
1.1 markus 104: dlclose(p->handle);
1.3 deraadt 105: #endif
1.1 markus 106: }
107:
108: /*
109: * remove a reference to the provider.
110: * called when a key gets destroyed or when the provider is unregistered.
111: */
112: static void
113: pkcs11_provider_unref(struct pkcs11_provider *p)
114: {
115: debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount);
116: if (--p->refcount <= 0) {
117: if (p->valid)
118: error("pkcs11_provider_unref: %p still valid", p);
1.7 djm 119: free(p->slotlist);
120: free(p->slotinfo);
121: free(p);
1.1 markus 122: }
123: }
124:
125: /* unregister all providers, keys might still point to the providers */
126: void
127: pkcs11_terminate(void)
128: {
129: struct pkcs11_provider *p;
130:
131: while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) {
132: TAILQ_REMOVE(&pkcs11_providers, p, next);
133: pkcs11_provider_finalize(p);
134: pkcs11_provider_unref(p);
135: }
136: }
137:
138: /* lookup provider by name */
139: static struct pkcs11_provider *
140: pkcs11_provider_lookup(char *provider_id)
141: {
142: struct pkcs11_provider *p;
143:
144: TAILQ_FOREACH(p, &pkcs11_providers, next) {
145: debug("check %p %s", p, p->name);
146: if (!strcmp(provider_id, p->name))
147: return (p);
148: }
149: return (NULL);
150: }
151:
152: /* unregister provider by name */
153: int
154: pkcs11_del_provider(char *provider_id)
155: {
156: struct pkcs11_provider *p;
157:
158: if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
159: TAILQ_REMOVE(&pkcs11_providers, p, next);
160: pkcs11_provider_finalize(p);
161: pkcs11_provider_unref(p);
162: return (0);
163: }
164: return (-1);
165: }
166:
167: /* openssl callback for freeing an RSA key */
168: static int
169: pkcs11_rsa_finish(RSA *rsa)
170: {
171: struct pkcs11_key *k11;
172: int rv = -1;
173:
174: if ((k11 = RSA_get_app_data(rsa)) != NULL) {
175: if (k11->orig_finish)
176: rv = k11->orig_finish(rsa);
177: if (k11->provider)
178: pkcs11_provider_unref(k11->provider);
1.7 djm 179: free(k11->keyid);
180: free(k11);
1.1 markus 181: }
182: return (rv);
183: }
184:
1.5 markus 185: /* find a single 'obj' for given attributes */
186: static int
187: pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr,
188: CK_ULONG nattr, CK_OBJECT_HANDLE *obj)
189: {
190: CK_FUNCTION_LIST *f;
191: CK_SESSION_HANDLE session;
192: CK_ULONG nfound = 0;
193: CK_RV rv;
194: int ret = -1;
195:
196: f = p->function_list;
197: session = p->slotinfo[slotidx].session;
198: if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) {
199: error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv);
200: return (-1);
201: }
202: if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK ||
203: nfound != 1) {
204: debug("C_FindObjects failed (nfound %lu nattr %lu): %lu",
205: nfound, nattr, rv);
206: } else
207: ret = 0;
208: if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
209: error("C_FindObjectsFinal failed: %lu", rv);
210: return (ret);
211: }
212:
1.1 markus 213: /* openssl callback doing the actual signing operation */
214: static int
215: pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
216: int padding)
217: {
218: struct pkcs11_key *k11;
219: struct pkcs11_slotinfo *si;
220: CK_FUNCTION_LIST *f;
221: CK_OBJECT_HANDLE obj;
1.5 markus 222: CK_ULONG tlen = 0;
1.1 markus 223: CK_RV rv;
224: CK_OBJECT_CLASS private_key_class = CKO_PRIVATE_KEY;
1.10 djm 225: CK_BBOOL true_val = CK_TRUE;
1.1 markus 226: CK_MECHANISM mech = {
227: CKM_RSA_PKCS, NULL_PTR, 0
228: };
229: CK_ATTRIBUTE key_filter[] = {
230: {CKA_CLASS, &private_key_class, sizeof(private_key_class) },
231: {CKA_ID, NULL, 0},
1.10 djm 232: {CKA_SIGN, &true_val, sizeof(true_val) }
1.1 markus 233: };
1.19 djm 234: char *pin = NULL, prompt[1024];
1.1 markus 235: int rval = -1;
236:
237: if ((k11 = RSA_get_app_data(rsa)) == NULL) {
238: error("RSA_get_app_data failed for rsa %p", rsa);
239: return (-1);
240: }
241: if (!k11->provider || !k11->provider->valid) {
242: error("no pkcs11 (valid) provider for rsa %p", rsa);
243: return (-1);
244: }
245: f = k11->provider->function_list;
246: si = &k11->provider->slotinfo[k11->slotidx];
247: if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
248: if (!pkcs11_interactive) {
1.19 djm 249: error("need pin entry%s", (si->token.flags &
250: CKF_PROTECTED_AUTHENTICATION_PATH) ?
251: " on reader keypad" : "");
1.1 markus 252: return (-1);
253: }
1.19 djm 254: if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
255: verbose("Deferring PIN entry to reader keypad.");
256: else {
257: snprintf(prompt, sizeof(prompt),
258: "Enter PIN for '%s': ", si->token.label);
259: pin = read_passphrase(prompt, RP_ALLOW_EOF);
260: if (pin == NULL)
261: return (-1); /* bail out */
262: }
263: rv = f->C_Login(si->session, CKU_USER, (u_char *)pin,
264: (pin != NULL) ? strlen(pin) : 0);
265: if (pin != NULL) {
266: explicit_bzero(pin, strlen(pin));
267: free(pin);
268: }
1.16 djm 269: if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
1.1 markus 270: error("C_Login failed: %lu", rv);
271: return (-1);
272: }
273: si->logged_in = 1;
274: }
275: key_filter[1].pValue = k11->keyid;
276: key_filter[1].ulValueLen = k11->keyid_len;
1.5 markus 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");
1.1 markus 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:
295: static int
296: pkcs11_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 */
303: static int
304: pkcs11_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;
1.22 djm 316: if (k11->keyid_len > 0) {
317: k11->keyid = xmalloc(k11->keyid_len);
318: memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
319: }
1.1 markus 320: k11->orig_finish = def->finish;
321: memcpy(&k11->rsa_method, def, sizeof(k11->rsa_method));
322: k11->rsa_method.name = "pkcs11";
323: k11->rsa_method.rsa_priv_enc = pkcs11_rsa_private_encrypt;
324: k11->rsa_method.rsa_priv_dec = pkcs11_rsa_private_decrypt;
325: k11->rsa_method.finish = pkcs11_rsa_finish;
326: RSA_set_method(rsa, &k11->rsa_method);
327: RSA_set_app_data(rsa, k11);
328: return (0);
329: }
330:
331: /* remove trailing spaces */
332: static void
1.8 djm 333: rmspace(u_char *buf, size_t len)
1.1 markus 334: {
335: size_t i;
336:
337: if (!len)
338: return;
339: for (i = len - 1; i > 0; i--)
340: if (i == len - 1 || buf[i] == ' ')
341: buf[i] = '\0';
342: else
343: break;
344: }
345:
346: /*
347: * open a pkcs11 session and login if required.
348: * if pin == NULL we delay login until key use
349: */
350: static int
351: pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin)
352: {
353: CK_RV rv;
354: CK_FUNCTION_LIST *f;
355: CK_SESSION_HANDLE session;
356: int login_required;
357:
358: f = p->function_list;
359: login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED;
360: if (pin && login_required && !strlen(pin)) {
361: error("pin required");
362: return (-1);
363: }
364: if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION|
365: CKF_SERIAL_SESSION, NULL, NULL, &session))
366: != CKR_OK) {
367: error("C_OpenSession failed: %lu", rv);
368: return (-1);
369: }
370: if (login_required && pin) {
1.16 djm 371: rv = f->C_Login(session, CKU_USER,
1.17 deraadt 372: (u_char *)pin, strlen(pin));
1.16 djm 373: if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
1.1 markus 374: error("C_Login failed: %lu", rv);
375: if ((rv = f->C_CloseSession(session)) != CKR_OK)
376: error("C_CloseSession failed: %lu", rv);
377: return (-1);
378: }
379: p->slotinfo[slotidx].logged_in = 1;
380: }
381: p->slotinfo[slotidx].session = session;
382: return (0);
383: }
384:
385: /*
386: * lookup public keys for token in slot identified by slotidx,
387: * add 'wrapped' public keys to the 'keysp' array and increment nkeys.
388: * keysp points to an (possibly empty) array with *nkeys keys.
389: */
1.9 markus 390: static int pkcs11_fetch_keys_filter(struct pkcs11_provider *, CK_ULONG,
1.15 djm 391: CK_ATTRIBUTE [], CK_ATTRIBUTE [3], struct sshkey ***, int *)
1.13 djm 392: __attribute__((__bounded__(__minbytes__,4, 3 * sizeof(CK_ATTRIBUTE))));
1.9 markus 393:
394: static int
395: pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
1.15 djm 396: struct sshkey ***keysp, int *nkeys)
1.9 markus 397: {
398: CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY;
399: CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE;
400: CK_ATTRIBUTE pubkey_filter[] = {
401: { CKA_CLASS, &pubkey_class, sizeof(pubkey_class) }
402: };
403: CK_ATTRIBUTE cert_filter[] = {
404: { CKA_CLASS, &cert_class, sizeof(cert_class) }
405: };
406: CK_ATTRIBUTE pubkey_attribs[] = {
407: { CKA_ID, NULL, 0 },
408: { CKA_MODULUS, NULL, 0 },
409: { CKA_PUBLIC_EXPONENT, NULL, 0 }
410: };
411: CK_ATTRIBUTE cert_attribs[] = {
412: { CKA_ID, NULL, 0 },
413: { CKA_SUBJECT, NULL, 0 },
414: { CKA_VALUE, NULL, 0 }
415: };
416:
417: if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, pubkey_attribs,
418: keysp, nkeys) < 0 ||
419: pkcs11_fetch_keys_filter(p, slotidx, cert_filter, cert_attribs,
420: keysp, nkeys) < 0)
421: return (-1);
422: return (0);
423: }
424:
1.1 markus 425: static int
1.15 djm 426: pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key)
1.9 markus 427: {
428: int i;
429:
430: for (i = 0; i < *nkeys; i++)
1.15 djm 431: if (sshkey_equal(key, (*keysp)[i]))
1.9 markus 432: return (1);
433: return (0);
434: }
435:
436: static int
437: pkcs11_fetch_keys_filter(struct pkcs11_provider *p, CK_ULONG slotidx,
438: CK_ATTRIBUTE filter[], CK_ATTRIBUTE attribs[3],
1.15 djm 439: struct sshkey ***keysp, int *nkeys)
1.1 markus 440: {
1.15 djm 441: struct sshkey *key;
1.1 markus 442: RSA *rsa;
1.9 markus 443: X509 *x509;
444: EVP_PKEY *evp;
1.1 markus 445: int i;
1.9 markus 446: const u_char *cp;
1.1 markus 447: CK_RV rv;
448: CK_OBJECT_HANDLE obj;
449: CK_ULONG nfound;
450: CK_SESSION_HANDLE session;
451: CK_FUNCTION_LIST *f;
452:
453: f = p->function_list;
454: session = p->slotinfo[slotidx].session;
455: /* setup a filter the looks for public keys */
1.9 markus 456: if ((rv = f->C_FindObjectsInit(session, filter, 1)) != CKR_OK) {
1.1 markus 457: error("C_FindObjectsInit failed: %lu", rv);
458: return (-1);
459: }
460: while (1) {
461: /* XXX 3 attributes in attribs[] */
462: for (i = 0; i < 3; i++) {
463: attribs[i].pValue = NULL;
464: attribs[i].ulValueLen = 0;
465: }
466: if ((rv = f->C_FindObjects(session, &obj, 1, &nfound)) != CKR_OK
467: || nfound == 0)
468: break;
469: /* found a key, so figure out size of the attributes */
470: if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3))
471: != CKR_OK) {
472: error("C_GetAttributeValue failed: %lu", rv);
473: continue;
474: }
1.21 djm 475: /*
476: * Allow CKA_ID (always first attribute) to be empty, but
477: * ensure that none of the others are zero length.
478: * XXX assumes CKA_ID is always first.
479: */
480: if (attribs[1].ulValueLen == 0 ||
1.6 markus 481: attribs[2].ulValueLen == 0) {
482: continue;
483: }
484: /* allocate buffers for attributes */
1.21 djm 485: for (i = 0; i < 3; i++) {
486: if (attribs[i].ulValueLen > 0) {
487: attribs[i].pValue = xmalloc(
488: attribs[i].ulValueLen);
489: }
490: }
491:
1.9 markus 492: /*
493: * retrieve ID, modulus and public exponent of RSA key,
494: * or ID, subject and value for certificates.
495: */
496: rsa = NULL;
1.1 markus 497: if ((rv = f->C_GetAttributeValue(session, obj, attribs, 3))
498: != CKR_OK) {
499: error("C_GetAttributeValue failed: %lu", rv);
1.9 markus 500: } else if (attribs[1].type == CKA_MODULUS ) {
501: if ((rsa = RSA_new()) == NULL) {
502: error("RSA_new failed");
503: } else {
504: rsa->n = BN_bin2bn(attribs[1].pValue,
505: attribs[1].ulValueLen, NULL);
506: rsa->e = BN_bin2bn(attribs[2].pValue,
507: attribs[2].ulValueLen, NULL);
508: }
1.1 markus 509: } else {
1.9 markus 510: cp = attribs[2].pValue;
511: if ((x509 = X509_new()) == NULL) {
512: error("X509_new failed");
513: } else if (d2i_X509(&x509, &cp, attribs[2].ulValueLen)
514: == NULL) {
515: error("d2i_X509 failed");
516: } else if ((evp = X509_get_pubkey(x509)) == NULL ||
517: evp->type != EVP_PKEY_RSA ||
518: evp->pkey.rsa == NULL) {
519: debug("X509_get_pubkey failed or no rsa");
520: } else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa))
521: == NULL) {
522: error("RSAPublicKey_dup");
523: }
524: if (x509)
525: X509_free(x509);
526: }
527: if (rsa && rsa->n && rsa->e &&
528: pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) {
1.24 ! markus 529: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
! 530: fatal("sshkey_new failed");
1.9 markus 531: key->rsa = rsa;
532: key->type = KEY_RSA;
1.14 djm 533: key->flags |= SSHKEY_FLAG_EXT;
1.9 markus 534: if (pkcs11_key_included(keysp, nkeys, key)) {
1.15 djm 535: sshkey_free(key);
1.9 markus 536: } else {
1.1 markus 537: /* expand key array and add key */
1.18 deraadt 538: *keysp = xreallocarray(*keysp, *nkeys + 1,
1.15 djm 539: sizeof(struct sshkey *));
1.1 markus 540: (*keysp)[*nkeys] = key;
541: *nkeys = *nkeys + 1;
542: debug("have %d keys", *nkeys);
543: }
1.9 markus 544: } else if (rsa) {
545: RSA_free(rsa);
1.1 markus 546: }
547: for (i = 0; i < 3; i++)
1.7 djm 548: free(attribs[i].pValue);
1.1 markus 549: }
550: if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
551: error("C_FindObjectsFinal failed: %lu", rv);
552: return (0);
553: }
554:
1.2 markus 555: #ifdef HAVE_DLOPEN
1.1 markus 556: /* register a new provider, fails if provider already exists */
557: int
1.15 djm 558: pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp)
1.1 markus 559: {
560: int nkeys, need_finalize = 0;
561: struct pkcs11_provider *p = NULL;
562: void *handle = NULL;
563: CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **);
564: CK_RV rv;
565: CK_FUNCTION_LIST *f = NULL;
566: CK_TOKEN_INFO *token;
567: CK_ULONG i;
568:
569: *keyp = NULL;
570: if (pkcs11_provider_lookup(provider_id) != NULL) {
1.23 djm 571: debug("%s: provider already registered: %s",
572: __func__, provider_id);
1.1 markus 573: goto fail;
574: }
575: /* open shared pkcs11-libarary */
576: if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) {
577: error("dlopen %s failed: %s", provider_id, dlerror());
578: goto fail;
579: }
580: if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) {
581: error("dlsym(C_GetFunctionList) failed: %s", dlerror());
582: goto fail;
583: }
584: p = xcalloc(1, sizeof(*p));
585: p->name = xstrdup(provider_id);
586: p->handle = handle;
587: /* setup the pkcs11 callbacks */
588: if ((rv = (*getfunctionlist)(&f)) != CKR_OK) {
1.23 djm 589: error("C_GetFunctionList for provider %s failed: %lu",
590: provider_id, rv);
1.1 markus 591: goto fail;
592: }
593: p->function_list = f;
594: if ((rv = f->C_Initialize(NULL)) != CKR_OK) {
1.23 djm 595: error("C_Initialize for provider %s failed: %lu",
596: provider_id, rv);
1.1 markus 597: goto fail;
598: }
599: need_finalize = 1;
600: if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) {
1.23 djm 601: error("C_GetInfo for provider %s failed: %lu",
602: provider_id, rv);
1.1 markus 603: goto fail;
604: }
605: rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID));
606: rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription));
1.23 djm 607: debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d"
1.1 markus 608: " libraryDescription <%s> libraryVersion %d.%d",
1.23 djm 609: provider_id,
1.1 markus 610: p->info.manufacturerID,
611: p->info.cryptokiVersion.major,
612: p->info.cryptokiVersion.minor,
613: p->info.libraryDescription,
614: p->info.libraryVersion.major,
615: p->info.libraryVersion.minor);
616: if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
617: error("C_GetSlotList failed: %lu", rv);
618: goto fail;
619: }
620: if (p->nslots == 0) {
1.23 djm 621: debug("%s: provider %s returned no slots", __func__,
622: provider_id);
1.1 markus 623: goto fail;
624: }
625: p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID));
626: if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots))
627: != CKR_OK) {
1.23 djm 628: error("C_GetSlotList for provider %s failed: %lu",
629: provider_id, rv);
1.1 markus 630: goto fail;
631: }
632: p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo));
633: p->valid = 1;
634: nkeys = 0;
635: for (i = 0; i < p->nslots; i++) {
636: token = &p->slotinfo[i].token;
637: if ((rv = f->C_GetTokenInfo(p->slotlist[i], token))
638: != CKR_OK) {
1.23 djm 639: error("C_GetTokenInfo for provider %s slot %lu "
640: "failed: %lu", provider_id, (unsigned long)i, rv);
1.20 djm 641: continue;
642: }
643: if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) {
1.23 djm 644: debug2("%s: ignoring uninitialised token in "
645: "provider %s slot %lu", __func__,
646: provider_id, (unsigned long)i);
1.1 markus 647: continue;
648: }
649: rmspace(token->label, sizeof(token->label));
650: rmspace(token->manufacturerID, sizeof(token->manufacturerID));
651: rmspace(token->model, sizeof(token->model));
652: rmspace(token->serialNumber, sizeof(token->serialNumber));
1.23 djm 653: debug("provider %s slot %lu: label <%s> manufacturerID <%s> "
654: "model <%s> serial <%s> flags 0x%lx",
655: provider_id, (unsigned long)i,
1.1 markus 656: token->label, token->manufacturerID, token->model,
657: token->serialNumber, token->flags);
658: /* open session, login with pin and retrieve public keys */
659: if (pkcs11_open_session(p, i, pin) == 0)
660: pkcs11_fetch_keys(p, i, keyp, &nkeys);
661: }
662: if (nkeys > 0) {
663: TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
664: p->refcount++; /* add to provider list */
665: return (nkeys);
666: }
1.23 djm 667: debug("%s: provider %s returned no keys", __func__, provider_id);
1.1 markus 668: /* don't add the provider, since it does not have any keys */
669: fail:
670: if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
1.23 djm 671: error("C_Finalize for provider %s failed: %lu",
672: provider_id, rv);
1.1 markus 673: if (p) {
1.7 djm 674: free(p->slotlist);
675: free(p->slotinfo);
676: free(p);
1.1 markus 677: }
678: if (handle)
679: dlclose(handle);
680: return (-1);
681: }
1.2 markus 682: #else
683: int
1.15 djm 684: pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp)
1.2 markus 685: {
686: error("dlopen() not supported");
687: return (-1);
688: }
689: #endif
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