xref: /titanic_50/usr/src/cmd/cmd-crypto/pktool/common.c (revision c77a61a72b5ecdc507d6cf104142edd371a16c84)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * This file contains the functions that are shared among
30  * the various services this tool will ultimately provide.
31  * The functions in this file return PKCS#11 CK_RV errors.
32  * Only one session and one login per token is supported
33  * at this time.
34  */
35 
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <ctype.h>
40 #include <sys/types.h>
41 #include <sys/stat.h>
42 #include <fcntl.h>
43 #include <tzfile.h>
44 #include <cryptoutil.h>
45 #include <security/cryptoki.h>
46 #include <kmfapi.h>
47 
48 #include "common.h"
49 
50 /* Local status variables. */
51 static boolean_t	initialized = B_FALSE;
52 static boolean_t	session_opened = B_FALSE;
53 static boolean_t	logged_in = B_FALSE;
54 
55 /* Supporting structures and global variables for getopt_av(). */
56 typedef struct	av_opts_s {
57 	int		shortnm;	/* short name character */
58 	char		*longnm;	/* long name string, NOT terminated */
59 	int		longnm_len;	/* length of long name string */
60 	boolean_t	has_arg;	/* takes optional argument */
61 } av_opts;
62 static av_opts		*opts_av = NULL;
63 static const char	*_save_optstr = NULL;
64 static int		_save_numopts = 0;
65 
66 int			optind_av = 1;
67 char			*optarg_av = NULL;
68 
69 static void close_sess(CK_SESSION_HANDLE);
70 static void logout_token(CK_SESSION_HANDLE);
71 
72 /*
73  * Perform PKCS#11 setup here.  Currently only C_Initialize is required,
74  * along with setting/resetting state variables.
75  */
76 CK_RV
77 init_pk11(void)
78 {
79 	CK_RV		rv = CKR_OK;
80 
81 	/* If C_Initialize() already called, nothing to do here. */
82 	if (initialized == B_TRUE)
83 		return (CKR_OK);
84 
85 	/* Reset state variables because C_Initialize() not yet done. */
86 	session_opened = B_FALSE;
87 	logged_in = B_FALSE;
88 
89 	/* Initialize PKCS#11 library. */
90 	if ((rv = C_Initialize(NULL_PTR)) != CKR_OK &&
91 	    rv != CKR_CRYPTOKI_ALREADY_INITIALIZED) {
92 		return (rv);
93 	}
94 
95 	initialized = B_TRUE;
96 	return (CKR_OK);
97 }
98 
99 /*
100  * Finalize PKCS#11 library and reset state variables.  Open sessions,
101  * if any, are closed, and thereby any logins are logged out also.
102  */
103 void
104 final_pk11(CK_SESSION_HANDLE sess)
105 {
106 
107 	/* If the library wasn't initialized, nothing to do here. */
108 	if (!initialized)
109 		return;
110 
111 	/* Make sure the sesion is closed first. */
112 	close_sess(sess);
113 
114 	(void) C_Finalize(NULL);
115 	initialized = B_FALSE;
116 }
117 
118 /*
119  * Close PKCS#11 session and reset state variables.  Any logins are
120  * logged out.
121  */
122 static void
123 close_sess(CK_SESSION_HANDLE sess)
124 {
125 
126 	if (sess == NULL) {
127 		return;
128 	}
129 
130 	/* If session is already closed, nothing to do here. */
131 	if (!session_opened)
132 		return;
133 
134 	/* Make sure user is logged out of token. */
135 	logout_token(sess);
136 
137 	(void) C_CloseSession(sess);
138 	session_opened = B_FALSE;
139 }
140 
141 /*
142  * Log user out of token and reset status variable.
143  */
144 static void
145 logout_token(CK_SESSION_HANDLE sess)
146 {
147 
148 	if (sess == NULL) {
149 		return;
150 	}
151 
152 	/* If already logged out, nothing to do here. */
153 	if (!logged_in)
154 		return;
155 
156 	(void) C_Logout(sess);
157 	logged_in = B_FALSE;
158 }
159 
160 /*
161  * Gets PIN from user.  Caller needs to free the returned PIN when done.
162  * If two prompts are given, the PIN is confirmed with second prompt.
163  * Note that getphassphrase() may return data in static memory area.
164  */
165 CK_RV
166 get_pin(char *prompt1, char *prompt2, CK_UTF8CHAR_PTR *pin, CK_ULONG *pinlen)
167 {
168 	char		*save_phrase, *phrase1, *phrase2;
169 
170 
171 #ifdef DEBUG
172 	if (getenv("TOKENPIN") != NULL) {
173 		*pin = (CK_UTF8CHAR_PTR)strdup(getenv("TOKENPIN"));
174 		*pinlen = strlen((char *)(*pin));
175 		return (CKR_OK);
176 	}
177 #endif /* DEBUG */
178 
179 	/* Prompt user for a PIN. */
180 	if (prompt1 == NULL) {
181 		return (CKR_ARGUMENTS_BAD);
182 	}
183 	if ((phrase1 = getpassphrase(prompt1)) == NULL) {
184 		return (CKR_FUNCTION_FAILED);
185 	}
186 
187 	/* Duplicate 1st PIN in separate chunk of memory. */
188 	if ((save_phrase = strdup(phrase1)) == NULL)
189 		return (CKR_HOST_MEMORY);
190 
191 	/* If second prompt given, PIN confirmation is requested. */
192 	if (prompt2 != NULL) {
193 		if ((phrase2 = getpassphrase(prompt2)) == NULL) {
194 			free(save_phrase);
195 			return (CKR_FUNCTION_FAILED);
196 		}
197 		if (strcmp(save_phrase, phrase2) != 0) {
198 			free(save_phrase);
199 			return (CKR_PIN_INCORRECT);
200 		}
201 	}
202 
203 	*pin = (CK_UTF8CHAR_PTR)save_phrase;
204 	*pinlen = strlen(save_phrase);
205 	return (CKR_OK);
206 }
207 
208 /*
209  * Gets yes/no response from user.  If either no prompt is supplied, a
210  * default prompt is used.  If not message for invalid input is supplied,
211  * a default will not be provided.  If the user provides no response,
212  * the input default B_TRUE == yes, B_FALSE == no is returned.
213  * Otherwise, B_TRUE is returned for yes, and B_FALSE for no.
214  */
215 boolean_t
216 yesno(char *prompt, char *invalid, boolean_t dflt)
217 {
218 	char		*response, buf[1024];
219 	char		*yes = gettext("yes");
220 	char		*no = gettext("no");
221 
222 
223 #ifdef DEBUG
224 	/* If debugging or testing, return TRUE and avoid prompting */
225 	if (getenv("TOKENPIN") != NULL) {
226 		return (B_TRUE);
227 	}
228 #endif /* DEBUG */
229 
230 	if (prompt == NULL)
231 		prompt = gettext("Enter (y)es or (n)o? ");
232 
233 	for (;;) {
234 		/* Prompt user. */
235 		(void) printf("%s", prompt);
236 		(void) fflush(stdout);
237 
238 		/* Get the response. */
239 		if ((response = fgets(buf, sizeof (buf), stdin)) == NULL)
240 			break;		/* go to default response */
241 
242 		/* Skip any leading white space. */
243 		while (isspace(*response))
244 			response++;
245 		if (*response == '\0')
246 			break;		/* go to default response */
247 
248 		/* Is it valid input?  Return appropriately. */
249 		if (strncasecmp(response, yes, 1) == 0)
250 			return (B_TRUE);
251 		if (strncasecmp(response, no, 1) == 0)
252 			return (B_FALSE);
253 
254 		/* Indicate invalid input, and try again. */
255 		if (invalid != NULL)
256 		    (void) printf("%s", invalid);
257 	}
258 	return (dflt);
259 }
260 
261 /*
262  * Gets the list of slots which have tokens in them.  Keeps adjusting
263  * the size of the slot list buffer until the call is successful or an
264  * irrecoverable error occurs.
265  */
266 CK_RV
267 get_token_slots(CK_SLOT_ID_PTR *slot_list, CK_ULONG *slot_count)
268 {
269 	CK_ULONG	tmp_count = 0;
270 	CK_SLOT_ID_PTR	tmp_list = NULL_PTR, tmp2_list = NULL_PTR;
271 	int		rv = CKR_OK;
272 
273 	if (!initialized)
274 		if ((rv = init_pk11()) != CKR_OK)
275 			return (rv);
276 
277 	/*
278 	 * Get the slot count first because we don't know how many
279 	 * slots there are and how many of those slots even have tokens.
280 	 * Don't specify an arbitrary buffer size for the slot list;
281 	 * it may be too small (see section 11.5 of PKCS#11 spec).
282 	 * Also select only those slots that have tokens in them,
283 	 * because this tool has no need to know about empty slots.
284 	 */
285 	if ((rv = C_GetSlotList(1, NULL_PTR, &tmp_count)) != CKR_OK)
286 		return (rv);
287 
288 	if (tmp_count == 0) {
289 		*slot_list = NULL_PTR;
290 		*slot_count = 0;
291 		return (CKR_OK);
292 	}
293 
294 	/* Allocate initial space for the slot list. */
295 	if ((tmp_list = (CK_SLOT_ID_PTR) malloc(tmp_count *
296 	    sizeof (CK_SLOT_ID))) == NULL)
297 		return (CKR_HOST_MEMORY);
298 
299 	/* Then get the slot list itself. */
300 	for (;;) {
301 		if ((rv = C_GetSlotList(1, tmp_list, &tmp_count)) == CKR_OK) {
302 			*slot_list = tmp_list;
303 			*slot_count = tmp_count;
304 			break;
305 		}
306 
307 		if (rv != CKR_BUFFER_TOO_SMALL) {
308 			free(tmp_list);
309 			break;
310 		}
311 
312 		/* If the number of slots grew, try again. */
313 		if ((tmp2_list = (CK_SLOT_ID_PTR) realloc(tmp_list,
314 		    tmp_count * sizeof (CK_SLOT_ID))) == NULL) {
315 			free(tmp_list);
316 			rv = CKR_HOST_MEMORY;
317 			break;
318 		}
319 		tmp_list = tmp2_list;
320 	}
321 
322 	return (rv);
323 }
324 
325 /*
326  * Breaks out the getopt-style option string into a structure that can be
327  * traversed later for calls to getopt_av().  Option string is NOT altered,
328  * but the struct fields point to locations within option string.
329  */
330 static int
331 populate_opts(char *optstring)
332 {
333 	int		i;
334 	av_opts		*temp;
335 	char		*marker;
336 
337 	if (optstring == NULL || *optstring == '\0')
338 		return (0);
339 
340 	/*
341 	 * This tries to imitate getopt(3c) Each option must conform to:
342 	 * <short name char> [ ':' ] [ '(' <long name string> ')' ]
343 	 * If long name is missing, the short name is used for long name.
344 	 */
345 	for (i = 0; *optstring != '\0'; i++) {
346 		if ((temp = (av_opts *)((i == 0) ? malloc(sizeof (av_opts)) :
347 		    realloc(opts_av, (i+1) * sizeof (av_opts)))) == NULL) {
348 			if (opts_av != NULL)
349 				free(opts_av);
350 			opts_av = NULL;
351 			return (0);
352 		} else {
353 			opts_av = (av_opts *)temp;
354 		}
355 
356 		(void) memset(&opts_av[i], 0, sizeof (av_opts));
357 		marker = optstring;		/* may need optstring later */
358 
359 		opts_av[i].shortnm = *marker++;	/* set short name */
360 
361 		if (*marker == ':') {		/* check for opt arg */
362 			marker++;
363 			opts_av[i].has_arg = B_TRUE;
364 		}
365 
366 		if (*marker == '(') {		/* check and set long name */
367 			marker++;
368 			opts_av[i].longnm = marker;
369 			opts_av[i].longnm_len = strcspn(marker, ")");
370 			optstring = marker + opts_av[i].longnm_len + 1;
371 		} else {
372 			/* use short name option character */
373 			opts_av[i].longnm = optstring;
374 			opts_av[i].longnm_len = 1;
375 			optstring = marker;
376 		}
377 	}
378 
379 	return (i);
380 }
381 
382 /*
383  * getopt_av() is very similar to getopt(3c) in that the takes an option
384  * string, compares command line arguments for matches, and returns a single
385  * letter option when a match is found.  However, getopt_av() differs from
386  * getopt(3c) by requiring that only longname options and values be found
387  * on the command line and all leading dashes are omitted.  In other words,
388  * it tries to enforce only longname "option=value" arguments on the command
389  * line.  Boolean options are not allowed either.
390  */
391 int
392 getopt_av(int argc, char * const *argv, const char *optstring)
393 {
394 	int	i;
395 	int	len;
396 	char   *cur_option;
397 
398 	if (optind_av >= argc)
399 		return (EOF);
400 
401 	/* First time or when optstring changes from previous one */
402 	if (_save_optstr != optstring) {
403 		if (opts_av != NULL)
404 		    free(opts_av);
405 		opts_av = NULL;
406 		_save_optstr = optstring;
407 		_save_numopts = populate_opts((char *)optstring);
408 	}
409 
410 	for (i = 0; i < _save_numopts; i++) {
411 		cur_option = argv[optind_av];
412 
413 		if (strcmp(cur_option, "--") == 0) {
414 			optind_av++;
415 			break;
416 		}
417 
418 		if (cur_option[0] == '-' && strlen(cur_option) == 2) {
419 			len = 1;
420 			cur_option++; /* remove "-" */
421 		} else {
422 			len = strcspn(cur_option, "=");
423 		}
424 
425 		if (len == opts_av[i].longnm_len && strncmp(cur_option,
426 		    opts_av[i].longnm, opts_av[i].longnm_len) == 0) {
427 			/* matched */
428 			if (!opts_av[i].has_arg) {
429 				optind_av++;
430 				return (opts_av[i].shortnm);
431 			}
432 
433 			/* needs optarg */
434 			if (cur_option[len] == '=') {
435 				optarg_av = &(cur_option[len+1]);
436 				optind_av++;
437 				return (opts_av[i].shortnm);
438 			}
439 
440 			optarg_av = NULL;
441 			optind_av++;
442 			return ((int)'?');
443 		}
444 	}
445 
446 	return (EOF);
447 }
448 
449 KMF_KEYSTORE_TYPE
450 KS2Int(char *keystore_str)
451 {
452 	if (keystore_str == NULL)
453 		return (0);
454 	if (!strcasecmp(keystore_str, "pkcs11"))
455 		return (KMF_KEYSTORE_PK11TOKEN);
456 	else if (!strcasecmp(keystore_str, "nss"))
457 		return (KMF_KEYSTORE_NSS);
458 	else if (!strcasecmp(keystore_str, "file"))
459 		return (KMF_KEYSTORE_OPENSSL);
460 	else
461 		return (0);
462 }
463 
464 
465 int
466 Str2KeyType(char *algm, KMF_KEY_ALG *ktype, KMF_ALGORITHM_INDEX *sigAlg)
467 {
468 	if (algm == NULL) {
469 		*sigAlg = KMF_ALGID_MD5WithRSA;
470 		*ktype = KMF_RSA;
471 	} else if (strcasecmp(algm, "DSA") == 0) {
472 		*sigAlg = KMF_ALGID_SHA1WithDSA;
473 		*ktype = KMF_DSA;
474 	} else if (strcasecmp(algm, "RSA") == 0) {
475 		*sigAlg = KMF_ALGID_MD5WithRSA;
476 		*ktype = KMF_RSA;
477 	} else {
478 		return (-1);
479 	}
480 	return (0);
481 }
482 
483 int
484 Str2SymKeyType(char *algm, KMF_KEY_ALG *ktype)
485 {
486 	if (algm == NULL)
487 		*ktype = KMF_AES;
488 	else if (strcasecmp(algm, "aes") == 0)
489 		*ktype = KMF_AES;
490 	else if (strcasecmp(algm, "arcfour") == 0)
491 		*ktype = KMF_RC4;
492 	else if (strcasecmp(algm, "des") == 0)
493 		*ktype = KMF_DES;
494 	else if (strcasecmp(algm, "3des") == 0)
495 		*ktype = KMF_DES3;
496 	else
497 		return (-1);
498 
499 	return (0);
500 }
501 
502 int
503 Str2Lifetime(char *ltimestr, uint32_t *ltime)
504 {
505 	int num;
506 	char timetok[6];
507 
508 	if (ltimestr == NULL || !strlen(ltimestr)) {
509 		/* default to 1 year lifetime */
510 		*ltime = SECSPERDAY * DAYSPERNYEAR;
511 		return (0);
512 	}
513 
514 	(void) memset(timetok, 0, sizeof (timetok));
515 	if (sscanf(ltimestr, "%d-%06s", &num, timetok) != 2)
516 		return (-1);
517 
518 	if (!strcasecmp(timetok, "day") ||
519 	    !strcasecmp(timetok, "days")) {
520 		*ltime = num * SECSPERDAY;
521 	} else if (!strcasecmp(timetok, "hour") ||
522 		!strcasecmp(timetok, "hours")) {
523 		*ltime = num * SECSPERHOUR;
524 	} else if (!strcasecmp(timetok, "year") ||
525 		!strcasecmp(timetok, "years")) {
526 		*ltime = num * SECSPERDAY * DAYSPERNYEAR;
527 	} else {
528 		*ltime = 0;
529 		return (-1);
530 	}
531 
532 	return (0);
533 }
534 
535 int
536 OT2Int(char *objclass)
537 {
538 	char *c = NULL;
539 	int retval = 0;
540 
541 	if (objclass == NULL)
542 		return (-1);
543 
544 	c = strchr(objclass, ':');
545 	if (c != NULL) {
546 		if (!strcasecmp(c, ":private"))
547 			retval = PK_PRIVATE_OBJ;
548 		else if (!strcasecmp(c, ":public"))
549 			retval = PK_PUBLIC_OBJ;
550 		else if (!strcasecmp(c, ":both"))
551 			retval = PK_PRIVATE_OBJ | PK_PUBLIC_OBJ;
552 		else /* unrecognized option */
553 			return (-1);
554 
555 		*c = '\0';
556 	}
557 
558 	if (!strcasecmp(objclass, "public")) {
559 		if (retval)
560 			return (-1);
561 		return (retval | PK_PUBLIC_OBJ | PK_CERT_OBJ |
562 			PK_PUBKEY_OBJ);
563 	} else if (!strcasecmp(objclass, "private")) {
564 		if (retval)
565 			return (-1);
566 		return (retval | PK_PRIKEY_OBJ | PK_PRIVATE_OBJ);
567 	} else if (!strcasecmp(objclass, "both")) {
568 		if (retval)
569 			return (-1);
570 		return (PK_KEY_OBJ | PK_PUBLIC_OBJ | PK_PRIVATE_OBJ);
571 	} else if (!strcasecmp(objclass, "cert")) {
572 		return (retval | PK_CERT_OBJ);
573 	} else if (!strcasecmp(objclass, "key")) {
574 		if (retval == 0) /* return all keys */
575 			return (retval | PK_KEY_OBJ);
576 		else if (retval == (PK_PRIVATE_OBJ | PK_PUBLIC_OBJ))
577 			/* return all keys */
578 			return (retval | PK_KEY_OBJ);
579 		else if (retval & PK_PUBLIC_OBJ)
580 			/* Only return public keys */
581 			return (retval | PK_PUBKEY_OBJ);
582 		else if (retval & PK_PRIVATE_OBJ)
583 			/* Only return private keys */
584 			return (retval | PK_PRIKEY_OBJ);
585 	} else if (!strcasecmp(objclass, "crl")) {
586 		if (retval)
587 			return (-1);
588 		return (retval | PK_CRL_OBJ);
589 	}
590 
591 	if (retval == 0) /* No matches found */
592 		retval = -1;
593 	return (retval);
594 }
595 
596 KMF_ENCODE_FORMAT
597 Str2Format(char *formstr)
598 {
599 	if (formstr == NULL || !strcasecmp(formstr, "der"))
600 		return (KMF_FORMAT_ASN1);
601 	if (!strcasecmp(formstr, "pem"))
602 		return (KMF_FORMAT_PEM);
603 	if (!strcasecmp(formstr, "pkcs12"))
604 		return (KMF_FORMAT_PKCS12);
605 
606 	return (KMF_FORMAT_UNDEF);
607 }
608 
609 
610 KMF_RETURN
611 select_token(void *kmfhandle, char *token,
612 	int readonly)
613 {
614 	KMF_RETURN rv = KMF_OK;
615 	KMF_CONFIG_PARAMS  config;
616 
617 	if (token == NULL)
618 		return (KMF_ERR_BAD_PARAMETER);
619 
620 	(void) memset(&config, 0, sizeof (config));
621 	config.kstype = KMF_KEYSTORE_PK11TOKEN;
622 	config.pkcs11config.label = token;
623 	config.pkcs11config.readonly = readonly;
624 
625 	rv = KMF_ConfigureKeystore(kmfhandle, &config);
626 	if (rv == KMF_ERR_TOKEN_SELECTED)
627 		rv = KMF_OK;
628 	return (rv);
629 }
630 
631 
632 KMF_RETURN
633 configure_nss(void *kmfhandle, char *dir, char *prefix)
634 {
635 	KMF_RETURN rv = KMF_OK;
636 	KMF_CONFIG_PARAMS  config;
637 
638 	(void) memset(&config, 0, sizeof (config));
639 	config.kstype = KMF_KEYSTORE_NSS;
640 	config.nssconfig.configdir = dir;
641 	config.nssconfig.certPrefix = prefix;
642 	config.nssconfig.keyPrefix = prefix;
643 	config.nssconfig.secModName = NULL;
644 
645 	rv = KMF_ConfigureKeystore(kmfhandle, &config);
646 	if (rv == KMF_KEYSTORE_ALREADY_INITIALIZED)
647 		rv = KMF_OK;
648 
649 	return (rv);
650 }
651 
652 
653 KMF_RETURN
654 get_pk12_password(KMF_CREDENTIAL *cred)
655 {
656 	KMF_RETURN rv = KMF_OK;
657 	char prompt[1024];
658 
659 	/*
660 	 * Get the password to use for the PK12 encryption.
661 	 */
662 	(void) strlcpy(prompt,
663 		gettext("Enter password to use for "
664 			"accessing the PKCS12 file: "),
665 		sizeof (prompt));
666 
667 	if (get_pin(prompt, NULL, (uchar_t **)&cred->cred,
668 		(ulong_t *)&cred->credlen) != CKR_OK) {
669 		cred->cred = NULL;
670 		cred->credlen = 0;
671 	}
672 
673 	return (rv);
674 }
675 
676 
677 #define	COUNTRY_PROMPT	"Country Name (2 letter code) [US]:"
678 #define	STATE_PROMPT	"State or Province Name (full name) [Some-State]:"
679 #define	LOCALITY_PROMPT	"Locality Name (eg, city) []:"
680 #define	ORG_PROMPT	"Organization Name (eg, company) []:"
681 #define	UNIT_PROMPT	"Organizational Unit Name (eg, section) []:"
682 #define	NAME_PROMPT	"Common Name (eg, YOUR name) []:"
683 #define	EMAIL_PROMPT	"Email Address []:"
684 
685 #define	COUNTRY_DEFAULT "US"
686 #define	STATE_DEFAULT	"Some-State"
687 #define	INVALID_INPUT 	"Invalid input; please re-enter ..."
688 
689 #define	SUBNAMESIZ	1024
690 #define	RDN_MIN		1
691 #define	RDN_MAX		64
692 #define	COUNTRYNAME_MIN	2
693 #define	COUNTRYNAME_MAX	2
694 
695 static char *
696 get_input_string(char *prompt, char *default_str, int min_len, int max_len)
697 {
698 	char buf[1024];
699 	char *response = NULL;
700 	char *ret = NULL;
701 	int len;
702 
703 	for (;;) {
704 		(void) printf("\t%s", prompt);
705 		(void) fflush(stdout);
706 
707 		response = fgets(buf, sizeof (buf), stdin);
708 		if (response == NULL) {
709 			if (default_str != NULL) {
710 				ret = strdup(default_str);
711 			}
712 			break;
713 		}
714 
715 		/* Skip any leading white space. */
716 		while (isspace(*response))
717 			response++;
718 		if (*response == '\0') {
719 			if (default_str != NULL) {
720 				ret = strdup(default_str);
721 			}
722 			break;
723 		}
724 
725 		len = strlen(response);
726 		response[len-1] = '\0'; /* get rid of "LF" */
727 		len--;
728 		if (len >= min_len && len <= max_len) {
729 			ret = strdup(response);
730 			break;
731 		}
732 
733 		(void) printf("%s\n", INVALID_INPUT);
734 
735 	}
736 
737 	return (ret);
738 }
739 
740 int
741 get_subname(char **result)
742 {
743 	char *country = NULL;
744 	char *state = NULL;
745 	char *locality = NULL;
746 	char *org = NULL;
747 	char *unit = NULL;
748 	char *name = NULL;
749 	char *email = NULL;
750 	char *subname = NULL;
751 
752 	(void) printf("Entering following fields for subject (a DN) ...\n");
753 	country = get_input_string(COUNTRY_PROMPT, COUNTRY_DEFAULT,
754 	    COUNTRYNAME_MIN, COUNTRYNAME_MAX);
755 	if (country == NULL)
756 		return (-1);
757 
758 	state = get_input_string(STATE_PROMPT, STATE_DEFAULT,
759 	    RDN_MIN, RDN_MAX);
760 	if (state == NULL) {
761 		goto out;
762 	}
763 
764 	locality = get_input_string(LOCALITY_PROMPT, NULL, RDN_MIN, RDN_MAX);
765 	org = get_input_string(ORG_PROMPT, NULL, RDN_MIN, RDN_MAX);
766 	unit = get_input_string(UNIT_PROMPT, NULL, RDN_MIN, RDN_MAX);
767 	name = get_input_string(NAME_PROMPT, NULL, RDN_MIN, RDN_MAX);
768 	email = get_input_string(EMAIL_PROMPT, NULL, RDN_MIN, RDN_MAX);
769 
770 	/* Now create a subject name from the input strings */
771 	if ((subname = malloc(SUBNAMESIZ)) == NULL)
772 		goto out;
773 
774 	(void) memset(subname, 0, SUBNAMESIZ);
775 	(void) strlcpy(subname, "C=", SUBNAMESIZ);
776 	(void) strlcat(subname, country, SUBNAMESIZ);
777 	(void) strlcat(subname, ", ", SUBNAMESIZ);
778 	(void) strlcat(subname, "ST=", SUBNAMESIZ);
779 	(void) strlcat(subname, state, SUBNAMESIZ);
780 
781 	if (locality) {
782 		(void) strlcat(subname, ", ", SUBNAMESIZ);
783 		(void) strlcat(subname, "L=", SUBNAMESIZ);
784 		(void) strlcat(subname, locality, SUBNAMESIZ);
785 	}
786 
787 	if (org) {
788 		(void) strlcat(subname, ", ", SUBNAMESIZ);
789 		(void) strlcat(subname, "O=", SUBNAMESIZ);
790 		(void) strlcat(subname, org, SUBNAMESIZ);
791 	}
792 
793 	if (unit) {
794 		(void) strlcat(subname, ", ", SUBNAMESIZ);
795 		(void) strlcat(subname, "OU=", SUBNAMESIZ);
796 		(void) strlcat(subname, unit, SUBNAMESIZ);
797 	}
798 
799 	if (name) {
800 		(void) strlcat(subname, ", ", SUBNAMESIZ);
801 		(void) strlcat(subname, "CN=", SUBNAMESIZ);
802 		(void) strlcat(subname, name, SUBNAMESIZ);
803 	}
804 
805 	if (email) {
806 		(void) strlcat(subname, ", ", SUBNAMESIZ);
807 		(void) strlcat(subname, "E=", SUBNAMESIZ);
808 		(void) strlcat(subname, email, SUBNAMESIZ);
809 	}
810 
811 out:
812 	if (country)
813 		free(country);
814 	if (state)
815 		free(state);
816 	if (locality)
817 		free(locality);
818 	if (org)
819 		free(org);
820 	if (unit)
821 		free(unit);
822 	if (name)
823 		free(name);
824 	if (email)
825 		free(email);
826 
827 	if (subname == NULL)
828 		return (-1);
829 	else {
830 		*result = subname;
831 		return (0);
832 	}
833 }
834 
835 /*
836  * Parse a string of KeyUsage values and convert
837  * them to the correct KU Bits.
838  * The field may be marked "critical" by prepending
839  * "critical:" to the list.
840  * EX:  critical:digitialSignature,keyEncipherment
841  */
842 KMF_RETURN
843 verify_keyusage(char *kustr, uint16_t *kubits, int *critical)
844 {
845 	KMF_RETURN ret = KMF_OK;
846 	uint16_t kuval;
847 	char *k;
848 
849 	*kubits = 0;
850 	if (kustr == NULL || !strlen(kustr))
851 		return (KMF_ERR_BAD_PARAMETER);
852 
853 	/* Check to see if this is critical */
854 	if (!strncasecmp(kustr, "critical:", strlen("critical:"))) {
855 		*critical = TRUE;
856 		kustr += strlen("critical:");
857 	} else {
858 		*critical = FALSE;
859 	}
860 
861 	k = strtok(kustr, ",");
862 	while (k != NULL) {
863 		kuval = KMF_StringToKeyUsage(k);
864 		if (kuval == 0) {
865 			*kubits = 0;
866 			return (KMF_ERR_BAD_PARAMETER);
867 		}
868 		*kubits |= kuval;
869 		k = strtok(NULL, ",");
870 	}
871 
872 	return (ret);
873 }
874 
875 /*
876  * Verify the alternate subject label is real or invalid.
877  *
878  * The field may be marked "critical" by prepending
879  * "critical:" to the list.
880  * EX:  "critical:IP=1.2.3.4"
881  */
882 KMF_RETURN
883 verify_altname(char *arg, KMF_GENERALNAMECHOICES *type, int *critical)
884 {
885 	char *p;
886 	KMF_RETURN rv = KMF_OK;
887 
888 	/* Check to see if this is critical */
889 	if (!strncasecmp(arg, "critical:", strlen("critical:"))) {
890 		*critical = TRUE;
891 		arg += strlen("critical:");
892 	} else {
893 		*critical = FALSE;
894 	}
895 
896 	/* Make sure there is an "=" sign */
897 	p = strchr(arg, '=');
898 	if (p == NULL)
899 		return (KMF_ERR_BAD_PARAMETER);
900 
901 	p[0] = '\0';
902 
903 	if (strcmp(arg, "IP") == 0)
904 		*type = GENNAME_IPADDRESS;
905 	else if (strcmp(arg, "DNS") == 0)
906 		*type = GENNAME_DNSNAME;
907 	else if (strcmp(arg, "EMAIL") == 0)
908 		*type = GENNAME_RFC822NAME;
909 	else if (strcmp(arg, "URI") == 0)
910 		*type = GENNAME_URI;
911 	else if (strcmp(arg, "DN") == 0)
912 		*type = GENNAME_DIRECTORYNAME;
913 	else if (strcmp(arg, "RID") == 0)
914 		*type = GENNAME_REGISTEREDID;
915 	else
916 		rv = KMF_ERR_BAD_PARAMETER;
917 
918 	p[0] = '=';
919 
920 	return (rv);
921 }
922 
923 int
924 get_token_password(KMF_KEYSTORE_TYPE kstype,
925 	char *token_spec, KMF_CREDENTIAL *cred)
926 {
927 	char	prompt[1024];
928 	char	*p = NULL;
929 
930 	if (kstype == KMF_KEYSTORE_PK11TOKEN) {
931 		p = strchr(token_spec, ':');
932 		if (p != NULL)
933 		*p = 0;
934 	}
935 	/*
936 	 * Login to the token first.
937 	 */
938 	(void) snprintf(prompt, sizeof (prompt),
939 		gettext(DEFAULT_TOKEN_PROMPT),
940 		token_spec);
941 
942 	if (get_pin(prompt, NULL, (uchar_t **)&cred->cred,
943 		(ulong_t *)&cred->credlen) != CKR_OK) {
944 		cred->cred = NULL;
945 		cred->credlen = 0;
946 	}
947 
948 	if (kstype == KMF_KEYSTORE_PK11TOKEN && p != NULL)
949 		*p = ':';
950 	return (KMF_OK);
951 }
952 
953 KMF_RETURN
954 verify_file(char *filename)
955 {
956 	KMF_RETURN ret = KMF_OK;
957 	int fd;
958 
959 	/*
960 	 * Attempt to open with  the EXCL flag so that if
961 	 * it already exists, the open will fail.  It will
962 	 * also fail if the file cannot be created due to
963 	 * permissions on the parent directory, or if the
964 	 * parent directory itself does not exist.
965 	 */
966 	fd = open(filename, O_CREAT | O_EXCL, 0600);
967 	if (fd == -1)
968 		return (KMF_ERR_OPEN_FILE);
969 
970 	/* If we were able to create it, delete it. */
971 	(void) close(fd);
972 	(void) unlink(filename);
973 
974 	return (ret);
975 }
976 
977 void
978 display_error(void *handle, KMF_RETURN errcode, char *prefix)
979 {
980 	KMF_RETURN rv1, rv2;
981 	char *plugin_errmsg = NULL;
982 	char *kmf_errmsg = NULL;
983 
984 	rv1 = KMF_GetPluginErrorString(handle, &plugin_errmsg);
985 	rv2 = KMF_GetKMFErrorString(errcode, &kmf_errmsg);
986 
987 	cryptoerror(LOG_STDERR, "%s:", prefix);
988 	if (rv1 == KMF_OK && plugin_errmsg) {
989 		cryptoerror(LOG_STDERR,
990 			gettext("keystore error: %s"),
991 			plugin_errmsg);
992 		KMF_FreeString(plugin_errmsg);
993 	}
994 
995 	if (rv2 == KMF_OK && kmf_errmsg) {
996 		cryptoerror(LOG_STDERR,
997 			gettext("libkmf error: %s"),
998 			kmf_errmsg);
999 		KMF_FreeString(kmf_errmsg);
1000 	}
1001 
1002 	if (rv1 != KMF_OK && rv2 != KMF_OK)
1003 		cryptoerror(LOG_STDERR, gettext("<unknown error>\n"));
1004 
1005 }
1006