opt.c@ 99376

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libs/openssl-3.0.1: Export to OSE and fix copyright headers in Makefiles, bugref:10128
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1	/*
2	* Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
3	*
4	* Licensed under the Apache License 2.0 (the "License"). You may not use
5	* this file except in compliance with the License. You can obtain a copy
6	* in the file LICENSE in the source distribution or at
7	* https://www.openssl.org/source/license.html
8	*/
9
10	/*
11	* This file is also used by the test suite. Do not #include "apps.h".
12	*/
13	#include "opt.h"
14	#include "fmt.h"
15	#include "app_libctx.h"
16	#include "internal/nelem.h"
17	#include "internal/numbers.h"
18	#include <string.h>
19	#if !defined(OPENSSL_SYS_MSDOS)
20	# include <unistd.h>
21	#endif
22
23	#include <stdlib.h>
24	#include <errno.h>
25	#include <ctype.h>
26	#include <limits.h>
27	#include <openssl/err.h>
28	#include <openssl/bio.h>
29	#include <openssl/x509v3.h>
30
31	#define MAX_OPT_HELP_WIDTH 30
32	const char OPT_HELP_STR[] = "-H";
33	const char OPT_MORE_STR[] = "-M";
34	const char OPT_SECTION_STR[] = "-S";
35	const char OPT_PARAM_STR[] = "-P";
36
37	/* Our state */
38	static char **argv;
39	static int argc;
40	static int opt_index;
41	static char *arg;
42	static char *flag;
43	static char *dunno;
44	static const OPTIONS *unknown;
45	static const OPTIONS *opts;
46	static char prog[40];
47
48	/*
49	* Return the simple name of the program; removing various platform gunk.
50	*/
51	#if defined(OPENSSL_SYS_WIN32)
52
53	const char opt_path_end(const char filename)
54	{
55	const char *p;
56
57	/* find the last '/', '\' or ':' */
58	for (p = filename + strlen(filename); --p > filename; )
59	if (p == '/' \|\| p == '\\' \|\| *p == ':') {
60	p++;
61	break;
62	}
63	return p;
64	}
65
66	char opt_progname(const char argv0)
67	{
68	size_t i, n;
69	const char *p;
70	char *q;
71
72	p = opt_path_end(argv0);
73
74	/* Strip off trailing nonsense. */
75	n = strlen(p);
76	if (n > 4 &&
77	(strcmp(&p[n - 4], ".exe") == 0 \|\| strcmp(&p[n - 4], ".EXE") == 0))
78	n -= 4;
79
80	/* Copy over the name, in lowercase. */
81	if (n > sizeof(prog) - 1)
82	n = sizeof(prog) - 1;
83	for (q = prog, i = 0; i < n; i++, p++)
84	q++ = tolower((unsigned char)p);
85	*q = '\0';
86	return prog;
87	}
88
89	#elif defined(OPENSSL_SYS_VMS)
90
91	const char opt_path_end(const char filename)
92	{
93	const char *p;
94
95	/* Find last special character sys:[foo.bar]openssl */
96	for (p = filename + strlen(filename); --p > filename;)
97	if (p == ':' \|\| p == ']' \|\| *p == '>') {
98	p++;
99	break;
100	}
101	return p;
102	}
103
104	char opt_progname(const char argv0)
105	{
106	const char p, q;
107
108	/* Find last special character sys:[foo.bar]openssl */
109	p = opt_path_end(argv0);
110	q = strrchr(p, '.');
111	if (prog != p)
112	strncpy(prog, p, sizeof(prog) - 1);
113	prog[sizeof(prog) - 1] = '\0';
114	if (q != NULL && q - p < sizeof(prog))
115	prog[q - p] = '\0';
116	return prog;
117	}
118
119	#else
120
121	const char opt_path_end(const char filename)
122	{
123	const char *p;
124
125	/* Could use strchr, but this is like the ones above. */
126	for (p = filename + strlen(filename); --p > filename;)
127	if (*p == '/') {
128	p++;
129	break;
130	}
131	return p;
132	}
133
134	char opt_progname(const char argv0)
135	{
136	const char *p;
137
138	p = opt_path_end(argv0);
139	if (prog != p)
140	strncpy(prog, p, sizeof(prog) - 1);
141	prog[sizeof(prog) - 1] = '\0';
142	return prog;
143	}
144	#endif
145
146	char opt_appname(const char argv0)
147	{
148	size_t len = strlen(prog);
149
150	if (argv0 != NULL)
151	BIO_snprintf(prog + len, sizeof(prog) - len - 1, " %s", argv0);
152	return prog;
153	}
154
155	char *opt_getprog(void)
156	{
157	return prog;
158	}
159
160	/* Set up the arg parsing. */
161	char opt_init(int ac, char av, const OPTIONS o)
162	{
163	/* Store state. */
164	argc = ac;
165	argv = av;
166	opt_begin();
167	opts = o;
168	unknown = NULL;
169
170	/* Make sure prog name is set for usage output */
171	(void)opt_progname(argv[0]);
172
173	/* Check all options up until the PARAM marker (if present) */
174	for (; o->name != NULL && o->name != OPT_PARAM_STR; ++o) {
175	#ifndef NDEBUG
176	const OPTIONS *next;
177	int duplicated, i;
178	#endif
179
180	if (o->name == OPT_HELP_STR
181	\|\| o->name == OPT_MORE_STR
182	\|\| o->name == OPT_SECTION_STR)
183	continue;
184	#ifndef NDEBUG
185	i = o->valtype;
186
187	/* Make sure options are legit. */
188	OPENSSL_assert(o->name[0] != '-');
189	if (o->valtype == '.')
190	OPENSSL_assert(o->retval == OPT_PARAM);
191	else
192	OPENSSL_assert(o->retval == OPT_DUP \|\| o->retval > OPT_PARAM);
193	switch (i) {
194	case 0: case '-': case '.':
195	case '/': case '<': case '>': case 'E': case 'F':
196	case 'M': case 'U': case 'f': case 'l': case 'n': case 'p': case 's':
197	case 'u': case 'c': case ':': case 'N':
198	break;
199	default:
200	OPENSSL_assert(0);
201	}
202
203	/* Make sure there are no duplicates. */
204	for (next = o + 1; next->name; ++next) {
205	/*
206	* Some compilers inline strcmp and the assert string is too long.
207	*/
208	duplicated = next->retval != OPT_DUP
209	&& strcmp(o->name, next->name) == 0;
210	if (duplicated) {
211	opt_printf_stderr("%s: Internal error: duplicate option %s\n",
212	prog, o->name);
213	OPENSSL_assert(!duplicated);
214	}
215	}
216	#endif
217	if (o->name[0] == '\0') {
218	OPENSSL_assert(unknown == NULL);
219	unknown = o;
220	OPENSSL_assert(unknown->valtype == 0 \|\| unknown->valtype == '-');
221	}
222	}
223	return prog;
224	}
225
226	static OPT_PAIR formats[] = {
227	{"PEM/DER", OPT_FMT_PEMDER},
228	{"pkcs12", OPT_FMT_PKCS12},
229	{"smime", OPT_FMT_SMIME},
230	{"engine", OPT_FMT_ENGINE},
231	{"msblob", OPT_FMT_MSBLOB},
232	{"nss", OPT_FMT_NSS},
233	{"text", OPT_FMT_TEXT},
234	{"http", OPT_FMT_HTTP},
235	{"pvk", OPT_FMT_PVK},
236	{NULL}
237	};
238
239	/* Print an error message about a failed format parse. */
240	static int opt_format_error(const char *s, unsigned long flags)
241	{
242	OPT_PAIR *ap;
243
244	if (flags == OPT_FMT_PEMDER) {
245	opt_printf_stderr("%s: Bad format \"%s\"; must be pem or der\n",
246	prog, s);
247	} else {
248	opt_printf_stderr("%s: Bad format \"%s\"; must be one of:\n",
249	prog, s);
250	for (ap = formats; ap->name; ap++)
251	if (flags & ap->retval)
252	opt_printf_stderr(" %s\n", ap->name);
253	}
254	return 0;
255	}
256
257	/* Parse a format string, put it into result; return 0 on failure, else 1. /
258	int opt_format(const char s, unsigned long flags, int result)
259	{
260	switch (*s) {
261	default:
262	opt_printf_stderr("%s: Bad format \"%s\"\n", prog, s);
263	return 0;
264	case 'D':
265	case 'd':
266	if ((flags & OPT_FMT_PEMDER) == 0)
267	return opt_format_error(s, flags);
268	*result = FORMAT_ASN1;
269	break;
270	case 'T':
271	case 't':
272	if ((flags & OPT_FMT_TEXT) == 0)
273	return opt_format_error(s, flags);
274	*result = FORMAT_TEXT;
275	break;
276	case 'N':
277	case 'n':
278	if ((flags & OPT_FMT_NSS) == 0)
279	return opt_format_error(s, flags);
280	if (strcmp(s, "NSS") != 0 && strcmp(s, "nss") != 0)
281	return opt_format_error(s, flags);
282	*result = FORMAT_NSS;
283	break;
284	case 'S':
285	case 's':
286	if ((flags & OPT_FMT_SMIME) == 0)
287	return opt_format_error(s, flags);
288	*result = FORMAT_SMIME;
289	break;
290	case 'M':
291	case 'm':
292	if ((flags & OPT_FMT_MSBLOB) == 0)
293	return opt_format_error(s, flags);
294	*result = FORMAT_MSBLOB;
295	break;
296	case 'E':
297	case 'e':
298	if ((flags & OPT_FMT_ENGINE) == 0)
299	return opt_format_error(s, flags);
300	*result = FORMAT_ENGINE;
301	break;
302	case 'H':
303	case 'h':
304	if ((flags & OPT_FMT_HTTP) == 0)
305	return opt_format_error(s, flags);
306	*result = FORMAT_HTTP;
307	break;
308	case '1':
309	if ((flags & OPT_FMT_PKCS12) == 0)
310	return opt_format_error(s, flags);
311	*result = FORMAT_PKCS12;
312	break;
313	case 'P':
314	case 'p':
315	if (s[1] == '\0' \|\| strcmp(s, "PEM") == 0 \|\| strcmp(s, "pem") == 0) {
316	if ((flags & OPT_FMT_PEMDER) == 0)
317	return opt_format_error(s, flags);
318	*result = FORMAT_PEM;
319	} else if (strcmp(s, "PVK") == 0 \|\| strcmp(s, "pvk") == 0) {
320	if ((flags & OPT_FMT_PVK) == 0)
321	return opt_format_error(s, flags);
322	*result = FORMAT_PVK;
323	} else if (strcmp(s, "P12") == 0 \|\| strcmp(s, "p12") == 0
324	\|\| strcmp(s, "PKCS12") == 0 \|\| strcmp(s, "pkcs12") == 0) {
325	if ((flags & OPT_FMT_PKCS12) == 0)
326	return opt_format_error(s, flags);
327	*result = FORMAT_PKCS12;
328	} else {
329	opt_printf_stderr("%s: Bad format \"%s\"\n", prog, s);
330	return 0;
331	}
332	break;
333	}
334	return 1;
335	}
336
337	/* Return string representing the given format. */
338	static const char *format2str(int format)
339	{
340	switch (format) {
341	default:
342	return "(undefined)";
343	case FORMAT_PEM:
344	return "PEM";
345	case FORMAT_ASN1:
346	return "DER";
347	case FORMAT_TEXT:
348	return "TEXT";
349	case FORMAT_NSS:
350	return "NSS";
351	case FORMAT_SMIME:
352	return "SMIME";
353	case FORMAT_MSBLOB:
354	return "MSBLOB";
355	case FORMAT_ENGINE:
356	return "ENGINE";
357	case FORMAT_HTTP:
358	return "HTTP";
359	case FORMAT_PKCS12:
360	return "P12";
361	case FORMAT_PVK:
362	return "PVK";
363	}
364	}
365
366	/* Print an error message about unsuitable/unsupported format requested. */
367	void print_format_error(int format, unsigned long flags)
368	{
369	(void)opt_format_error(format2str(format), flags);
370	}
371
372	/*
373	* Parse a cipher name, put it in *cipherp after freeing what was there, if
374	* cipherp is not NULL. Return 0 on failure, else 1.
375	*/
376	int opt_cipher_silent(const char name, EVP_CIPHER *cipherp)
377	{
378	EVP_CIPHER *c;
379
380	ERR_set_mark();
381	if ((c = EVP_CIPHER_fetch(app_get0_libctx(), name,
382	app_get0_propq())) != NULL
383	\|\| (opt_legacy_okay()
384	&& (c = (EVP_CIPHER *)EVP_get_cipherbyname(name)) != NULL)) {
385	ERR_pop_to_mark();
386	if (cipherp != NULL) {
387	EVP_CIPHER_free(*cipherp);
388	*cipherp = c;
389	} else {
390	EVP_CIPHER_free(c);
391	}
392	return 1;
393	}
394	ERR_clear_last_mark();
395	return 0;
396	}
397
398	int opt_cipher_any(const char name, EVP_CIPHER *cipherp)
399	{
400	int ret;
401
402	if ((ret = opt_cipher_silent(name, cipherp)) == 0)
403	opt_printf_stderr("%s: Unknown cipher: %s\n", prog, name);
404	return ret;
405	}
406
407	int opt_cipher(const char name, EVP_CIPHER *cipherp)
408	{
409	int mode, ret = 0;
410	unsigned long int flags;
411	EVP_CIPHER *c = NULL;
412
413	if (opt_cipher_any(name, &c)) {
414	mode = EVP_CIPHER_get_mode(c);
415	flags = EVP_CIPHER_get_flags(c);
416	if (mode == EVP_CIPH_XTS_MODE) {
417	opt_printf_stderr("%s XTS ciphers not supported\n", prog);
418	} else if ((flags & EVP_CIPH_FLAG_AEAD_CIPHER) != 0) {
419	opt_printf_stderr("%s: AEAD ciphers not supported\n", prog);
420	} else {
421	ret = 1;
422	if (cipherp != NULL)
423	*cipherp = c;
424	}
425	}
426	return ret;
427	}
428
429	/*
430	* Parse message digest name, put it in *EVP_MD; return 0 on failure, else 1.
431	*/
432	int opt_md_silent(const char name, EVP_MD *mdp)
433	{
434	EVP_MD *md;
435
436	ERR_set_mark();
437	if ((md = EVP_MD_fetch(app_get0_libctx(), name, app_get0_propq())) != NULL
438	\|\| (opt_legacy_okay()
439	&& (md = (EVP_MD *)EVP_get_digestbyname(name)) != NULL)) {
440	ERR_pop_to_mark();
441	if (mdp != NULL) {
442	EVP_MD_free(*mdp);
443	*mdp = md;
444	} else {
445	EVP_MD_free(md);
446	}
447	return 1;
448	}
449	ERR_clear_last_mark();
450	return 0;
451	}
452
453	int opt_md(const char name, EVP_MD *mdp)
454	{
455	int ret;
456
457	if ((ret = opt_md_silent(name, mdp)) == 0)
458	opt_printf_stderr("%s: Unknown option or message digest: %s\n", prog,
459	name != NULL ? name : "\"\"");
460	return ret;
461	}
462
463	/* Look through a list of name/value pairs. */
464	int opt_pair(const char name, const OPT_PAIR pairs, int *result)
465	{
466	const OPT_PAIR *pp;
467
468	for (pp = pairs; pp->name; pp++)
469	if (strcmp(pp->name, name) == 0) {
470	*result = pp->retval;
471	return 1;
472	}
473	opt_printf_stderr("%s: Value must be one of:\n", prog);
474	for (pp = pairs; pp->name; pp++)
475	opt_printf_stderr("\t%s\n", pp->name);
476	return 0;
477	}
478
479	/* Look through a list of valid names */
480	int opt_string(const char name, const char *options)
481	{
482	const char **p;
483
484	for (p = options; *p != NULL; p++)
485	if (strcmp(*p, name) == 0)
486	return 1;
487	opt_printf_stderr("%s: Value must be one of:\n", prog);
488	for (p = options; *p != NULL; p++)
489	opt_printf_stderr("\t%s\n", *p);
490	return 0;
491	}
492
493	/* Parse an int, put it into result; return 0 on failure, else 1. /
494	int opt_int(const char value, int result)
495	{
496	long l;
497
498	if (!opt_long(value, &l))
499	return 0;
500	*result = (int)l;
501	if (*result != l) {
502	opt_printf_stderr("%s: Value \"%s\" outside integer range\n",
503	prog, value);
504	return 0;
505	}
506	return 1;
507	}
508
509	/* Parse and return an integer, assuming range has been checked before. */
510	int opt_int_arg(void)
511	{
512	int result = -1;
513
514	(void)opt_int(arg, &result);
515	return result;
516	}
517
518	static void opt_number_error(const char *v)
519	{
520	size_t i = 0;
521	struct strstr_pair_st {
522	char *prefix;
523	char *name;
524	} b[] = {
525	{"0x", "a hexadecimal"},
526	{"0X", "a hexadecimal"},
527	{"0", "an octal"}
528	};
529
530	for (i = 0; i < OSSL_NELEM(b); i++) {
531	if (strncmp(v, b[i].prefix, strlen(b[i].prefix)) == 0) {
532	opt_printf_stderr("%s: Can't parse \"%s\" as %s number\n",
533	prog, v, b[i].name);
534	return;
535	}
536	}
537	opt_printf_stderr("%s: Can't parse \"%s\" as a number\n", prog, v);
538	return;
539	}
540
541	/* Parse a long, put it into result; return 0 on failure, else 1. /
542	int opt_long(const char value, long result)
543	{
544	int oerrno = errno;
545	long l;
546	char *endp;
547
548	errno = 0;
549	l = strtol(value, &endp, 0);
550	if (*endp
551	\|\| endp == value
552	\|\| ((l == LONG_MAX \|\| l == LONG_MIN) && errno == ERANGE)
553	\|\| (l == 0 && errno != 0)) {
554	opt_number_error(value);
555	errno = oerrno;
556	return 0;
557	}
558	*result = l;
559	errno = oerrno;
560	return 1;
561	}
562
563	#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L && \
564	defined(INTMAX_MAX) && defined(UINTMAX_MAX) && \
565	!defined(OPENSSL_NO_INTTYPES_H)
566
567	/* Parse an intmax_t, put it into result; return 0 on failure, else 1. /
568	int opt_intmax(const char value, ossl_intmax_t result)
569	{
570	int oerrno = errno;
571	intmax_t m;
572	char *endp;
573
574	errno = 0;
575	m = strtoimax(value, &endp, 0);
576	if (*endp
577	\|\| endp == value
578	\|\| ((m == INTMAX_MAX \|\| m == INTMAX_MIN)
579	&& errno == ERANGE)
580	\|\| (m == 0 && errno != 0)) {
581	opt_number_error(value);
582	errno = oerrno;
583	return 0;
584	}
585	/* Ensure that the value in \|m\| is never too big for \|result\| /
586	if (sizeof(m) > sizeof(*result)
587	&& (m < OSSL_INTMAX_MIN \|\| m > OSSL_INTMAX_MAX)) {
588	opt_number_error(value);
589	return 0;
590	}
591	*result = (ossl_intmax_t)m;
592	errno = oerrno;
593	return 1;
594	}
595
596	/* Parse a uintmax_t, put it into result; return 0 on failure, else 1. /
597	int opt_uintmax(const char value, ossl_uintmax_t result)
598	{
599	int oerrno = errno;
600	uintmax_t m;
601	char *endp;
602
603	errno = 0;
604	m = strtoumax(value, &endp, 0);
605	if (*endp
606	\|\| endp == value
607	\|\| (m == UINTMAX_MAX && errno == ERANGE)
608	\|\| (m == 0 && errno != 0)) {
609	opt_number_error(value);
610	errno = oerrno;
611	return 0;
612	}
613	/* Ensure that the value in \|m\| is never too big for \|result\| /
614	if (sizeof(m) > sizeof(*result)
615	&& m > OSSL_UINTMAX_MAX) {
616	opt_number_error(value);
617	return 0;
618	}
619	*result = (ossl_intmax_t)m;
620	errno = oerrno;
621	return 1;
622	}
623	#else
624	/* Fallback implementations based on long */
625	int opt_intmax(const char value, ossl_intmax_t result)
626	{
627	long m;
628	int ret;
629
630	if ((ret = opt_long(value, &m)))
631	*result = m;
632	return ret;
633	}
634
635	int opt_uintmax(const char value, ossl_uintmax_t result)
636	{
637	unsigned long m;
638	int ret;
639
640	if ((ret = opt_ulong(value, &m)))
641	*result = m;
642	return ret;
643	}
644	#endif
645
646	/*
647	* Parse an unsigned long, put it into *result; return 0 on failure, else 1.
648	*/
649	int opt_ulong(const char value, unsigned long result)
650	{
651	int oerrno = errno;
652	char *endptr;
653	unsigned long l;
654
655	errno = 0;
656	l = strtoul(value, &endptr, 0);
657	if (*endptr
658	\|\| endptr == value
659	\|\| ((l == ULONG_MAX) && errno == ERANGE)
660	\|\| (l == 0 && errno != 0)) {
661	opt_number_error(value);
662	errno = oerrno;
663	return 0;
664	}
665	*result = l;
666	errno = oerrno;
667	return 1;
668	}
669
670	/*
671	* We pass opt as an int but cast it to "enum range" so that all the
672	* items in the OPT_V_ENUM enumeration are caught; this makes -Wswitch
673	* in gcc do the right thing.
674	*/
675	enum range { OPT_V_ENUM };
676
677	int opt_verify(int opt, X509_VERIFY_PARAM *vpm)
678	{
679	int i;
680	ossl_intmax_t t = 0;
681	ASN1_OBJECT *otmp;
682	X509_PURPOSE *xptmp;
683	const X509_VERIFY_PARAM *vtmp;
684
685	OPENSSL_assert(vpm != NULL);
686	OPENSSL_assert(opt > OPT_V__FIRST);
687	OPENSSL_assert(opt < OPT_V__LAST);
688
689	switch ((enum range)opt) {
690	case OPT_V__FIRST:
691	case OPT_V__LAST:
692	return 0;
693	case OPT_V_POLICY:
694	otmp = OBJ_txt2obj(opt_arg(), 0);
695	if (otmp == NULL) {
696	opt_printf_stderr("%s: Invalid Policy %s\n", prog, opt_arg());
697	return 0;
698	}
699	X509_VERIFY_PARAM_add0_policy(vpm, otmp);
700	break;
701	case OPT_V_PURPOSE:
702	/* purpose name -> purpose index */
703	i = X509_PURPOSE_get_by_sname(opt_arg());
704	if (i < 0) {
705	opt_printf_stderr("%s: Invalid purpose %s\n", prog, opt_arg());
706	return 0;
707	}
708
709	/* purpose index -> purpose object */
710	xptmp = X509_PURPOSE_get0(i);
711
712	/* purpose object -> purpose value */
713	i = X509_PURPOSE_get_id(xptmp);
714
715	if (!X509_VERIFY_PARAM_set_purpose(vpm, i)) {
716	opt_printf_stderr("%s: Internal error setting purpose %s\n",
717	prog, opt_arg());
718	return 0;
719	}
720	break;
721	case OPT_V_VERIFY_NAME:
722	vtmp = X509_VERIFY_PARAM_lookup(opt_arg());
723	if (vtmp == NULL) {
724	opt_printf_stderr("%s: Invalid verify name %s\n",
725	prog, opt_arg());
726	return 0;
727	}
728	X509_VERIFY_PARAM_set1(vpm, vtmp);
729	break;
730	case OPT_V_VERIFY_DEPTH:
731	i = atoi(opt_arg());
732	if (i >= 0)
733	X509_VERIFY_PARAM_set_depth(vpm, i);
734	break;
735	case OPT_V_VERIFY_AUTH_LEVEL:
736	i = atoi(opt_arg());
737	if (i >= 0)
738	X509_VERIFY_PARAM_set_auth_level(vpm, i);
739	break;
740	case OPT_V_ATTIME:
741	if (!opt_intmax(opt_arg(), &t))
742	return 0;
743	if (t != (time_t)t) {
744	opt_printf_stderr("%s: epoch time out of range %s\n",
745	prog, opt_arg());
746	return 0;
747	}
748	X509_VERIFY_PARAM_set_time(vpm, (time_t)t);
749	break;
750	case OPT_V_VERIFY_HOSTNAME:
751	if (!X509_VERIFY_PARAM_set1_host(vpm, opt_arg(), 0))
752	return 0;
753	break;
754	case OPT_V_VERIFY_EMAIL:
755	if (!X509_VERIFY_PARAM_set1_email(vpm, opt_arg(), 0))
756	return 0;
757	break;
758	case OPT_V_VERIFY_IP:
759	if (!X509_VERIFY_PARAM_set1_ip_asc(vpm, opt_arg()))
760	return 0;
761	break;
762	case OPT_V_IGNORE_CRITICAL:
763	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_IGNORE_CRITICAL);
764	break;
765	case OPT_V_ISSUER_CHECKS:
766	/* NOP, deprecated */
767	break;
768	case OPT_V_CRL_CHECK:
769	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_CRL_CHECK);
770	break;
771	case OPT_V_CRL_CHECK_ALL:
772	X509_VERIFY_PARAM_set_flags(vpm,
773	X509_V_FLAG_CRL_CHECK \|
774	X509_V_FLAG_CRL_CHECK_ALL);
775	break;
776	case OPT_V_POLICY_CHECK:
777	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_POLICY_CHECK);
778	break;
779	case OPT_V_EXPLICIT_POLICY:
780	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_EXPLICIT_POLICY);
781	break;
782	case OPT_V_INHIBIT_ANY:
783	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_INHIBIT_ANY);
784	break;
785	case OPT_V_INHIBIT_MAP:
786	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_INHIBIT_MAP);
787	break;
788	case OPT_V_X509_STRICT:
789	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_X509_STRICT);
790	break;
791	case OPT_V_EXTENDED_CRL:
792	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_EXTENDED_CRL_SUPPORT);
793	break;
794	case OPT_V_USE_DELTAS:
795	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_USE_DELTAS);
796	break;
797	case OPT_V_POLICY_PRINT:
798	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_NOTIFY_POLICY);
799	break;
800	case OPT_V_CHECK_SS_SIG:
801	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_CHECK_SS_SIGNATURE);
802	break;
803	case OPT_V_TRUSTED_FIRST:
804	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_TRUSTED_FIRST);
805	break;
806	case OPT_V_SUITEB_128_ONLY:
807	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_SUITEB_128_LOS_ONLY);
808	break;
809	case OPT_V_SUITEB_128:
810	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_SUITEB_128_LOS);
811	break;
812	case OPT_V_SUITEB_192:
813	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_SUITEB_192_LOS);
814	break;
815	case OPT_V_PARTIAL_CHAIN:
816	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_PARTIAL_CHAIN);
817	break;
818	case OPT_V_NO_ALT_CHAINS:
819	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_NO_ALT_CHAINS);
820	break;
821	case OPT_V_NO_CHECK_TIME:
822	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_NO_CHECK_TIME);
823	break;
824	case OPT_V_ALLOW_PROXY_CERTS:
825	X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_ALLOW_PROXY_CERTS);
826	break;
827	}
828	return 1;
829
830	}
831
832	void opt_begin(void)
833	{
834	opt_index = 1;
835	arg = NULL;
836	flag = NULL;
837	}
838
839	/*
840	* Parse the next flag (and value if specified), return 0 if done, -1 on
841	* error, otherwise the flag's retval.
842	*/
843	int opt_next(void)
844	{
845	char *p;
846	const OPTIONS *o;
847	int ival;
848	long lval;
849	unsigned long ulval;
850	ossl_intmax_t imval;
851	ossl_uintmax_t umval;
852
853	/* Look at current arg; at end of the list? */
854	arg = NULL;
855	p = argv[opt_index];
856	if (p == NULL)
857	return 0;
858
859	/* If word doesn't start with a -, we're done. */
860	if (*p != '-')
861	return 0;
862
863	/* Hit "--" ? We're done. */
864	opt_index++;
865	if (strcmp(p, "--") == 0)
866	return 0;
867
868	/* Allow -nnn and --nnn */
869	if (*++p == '-')
870	p++;
871	flag = p - 1;
872
873	/* If we have --flag=foo, snip it off */
874	if ((arg = strchr(p, '=')) != NULL)
875	*arg++ = '\0';
876	for (o = opts; o->name; ++o) {
877	/* If not this option, move on to the next one. */
878	if (!(strcmp(p, "h") == 0 && strcmp(o->name, "help") == 0)
879	&& strcmp(p, o->name) != 0)
880	continue;
881
882	/* If it doesn't take a value, make sure none was given. */
883	if (o->valtype == 0 \|\| o->valtype == '-') {
884	if (arg) {
885	opt_printf_stderr("%s: Option -%s does not take a value\n",
886	prog, p);
887	return -1;
888	}
889	return o->retval;
890	}
891
892	/* Want a value; get the next param if =foo not used. */
893	if (arg == NULL) {
894	if (argv[opt_index] == NULL) {
895	opt_printf_stderr("%s: Option -%s needs a value\n",
896	prog, o->name);
897	return -1;
898	}
899	arg = argv[opt_index++];
900	}
901
902	/* Syntax-check value. */
903	switch (o->valtype) {
904	default:
905	case 's':
906	case ':':
907	/* Just a string. */
908	break;
909	case '.':
910	/* Parameters */
911	break;
912	case '/':
913	if (opt_isdir(arg) > 0)
914	break;
915	opt_printf_stderr("%s: Not a directory: %s\n", prog, arg);
916	return -1;
917	case '<':
918	/* Input file. */
919	break;
920	case '>':
921	/* Output file. */
922	break;
923	case 'p':
924	case 'n':
925	case 'N':
926	if (!opt_int(arg, &ival))
927	return -1;
928	if (o->valtype == 'p' && ival <= 0) {
929	opt_printf_stderr("%s: Non-positive number \"%s\" for option -%s\n",
930	prog, arg, o->name);
931	return -1;
932	}
933	if (o->valtype == 'N' && ival < 0) {
934	opt_printf_stderr("%s: Negative number \"%s\" for option -%s\n",
935	prog, arg, o->name);
936	return -1;
937	}
938	break;
939	case 'M':
940	if (!opt_intmax(arg, &imval))
941	return -1;
942	break;
943	case 'U':
944	if (!opt_uintmax(arg, &umval))
945	return -1;
946	break;
947	case 'l':
948	if (!opt_long(arg, &lval))
949	return -1;
950	break;
951	case 'u':
952	if (!opt_ulong(arg, &ulval))
953	return -1;
954	break;
955	case 'c':
956	case 'E':
957	case 'F':
958	case 'f':
959	if (opt_format(arg,
960	o->valtype == 'c' ? OPT_FMT_PDS :
961	o->valtype == 'E' ? OPT_FMT_PDE :
962	o->valtype == 'F' ? OPT_FMT_PEMDER
963	: OPT_FMT_ANY, &ival))
964	break;
965	opt_printf_stderr("%s: Invalid format \"%s\" for option -%s\n",
966	prog, arg, o->name);
967	return -1;
968	}
969
970	/* Return the flag value. */
971	return o->retval;
972	}
973	if (unknown != NULL) {
974	dunno = p;
975	return unknown->retval;
976	}
977	opt_printf_stderr("%s: Unknown option: -%s\n", prog, p);
978	return -1;
979	}
980
981	/* Return the most recent flag parameter. */
982	char *opt_arg(void)
983	{
984	return arg;
985	}
986
987	/* Return the most recent flag (option name including the preceding '-'). */
988	char *opt_flag(void)
989	{
990	return flag;
991	}
992
993	/* Return the unknown option. */
994	char *opt_unknown(void)
995	{
996	return dunno;
997	}
998
999	/* Return the rest of the arguments after parsing flags. */
1000	char **opt_rest(void)
1001	{
1002	return &argv[opt_index];
1003	}
1004
1005	/* How many items in remaining args? */
1006	int opt_num_rest(void)
1007	{
1008	int i = 0;
1009	char **pp;
1010
1011	for (pp = opt_rest(); *pp; pp++, i++)
1012	continue;
1013	return i;
1014	}
1015
1016	/* Return a string describing the parameter type. */
1017	static const char valtype2param(const OPTIONS o)
1018	{
1019	switch (o->valtype) {
1020	case 0:
1021	case '-':
1022	return "";
1023	case ':':
1024	return "uri";
1025	case 's':
1026	return "val";
1027	case '/':
1028	return "dir";
1029	case '<':
1030	return "infile";
1031	case '>':
1032	return "outfile";
1033	case 'p':
1034	return "+int";
1035	case 'n':
1036	return "int";
1037	case 'l':
1038	return "long";
1039	case 'u':
1040	return "ulong";
1041	case 'E':
1042	return "PEM\|DER\|ENGINE";
1043	case 'F':
1044	return "PEM\|DER";
1045	case 'f':
1046	return "format";
1047	case 'M':
1048	return "intmax";
1049	case 'N':
1050	return "nonneg";
1051	case 'U':
1052	return "uintmax";
1053	}
1054	return "parm";
1055	}
1056
1057	static void opt_print(const OPTIONS *o, int doingparams, int width)
1058	{
1059	const char* help;
1060	char start[80 + 1];
1061	char *p;
1062
1063	help = o->helpstr ? o->helpstr : "(No additional info)";
1064	if (o->name == OPT_HELP_STR) {
1065	opt_printf_stderr(help, prog);
1066	return;
1067	}
1068	if (o->name == OPT_SECTION_STR) {
1069	opt_printf_stderr("\n");
1070	opt_printf_stderr(help, prog);
1071	return;
1072	}
1073	if (o->name == OPT_PARAM_STR) {
1074	opt_printf_stderr("\nParameters:\n");
1075	return;
1076	}
1077
1078	/* Pad out prefix */
1079	memset(start, ' ', sizeof(start) - 1);
1080	start[sizeof(start) - 1] = '\0';
1081
1082	if (o->name == OPT_MORE_STR) {
1083	/* Continuation of previous line; pad and print. */
1084	start[width] = '\0';
1085	opt_printf_stderr("%s %s\n", start, help);
1086	return;
1087	}
1088
1089	/* Build up the "-flag [param]" part. */
1090	p = start;
1091	*p++ = ' ';
1092	if (!doingparams)
1093	*p++ = '-';
1094	if (o->name[0])
1095	p += strlen(strcpy(p, o->name));
1096	else
1097	p++ = '';
1098	if (o->valtype != '-') {
1099	*p++ = ' ';
1100	p += strlen(strcpy(p, valtype2param(o)));
1101	}
1102	*p = ' ';
1103	if ((int)(p - start) >= MAX_OPT_HELP_WIDTH) {
1104	*p = '\0';
1105	opt_printf_stderr("%s\n", start);
1106	memset(start, ' ', sizeof(start));
1107	}
1108	start[width] = '\0';
1109	opt_printf_stderr("%s %s\n", start, help);
1110	}
1111
1112	void opt_help(const OPTIONS *list)
1113	{
1114	const OPTIONS *o;
1115	int i, sawparams = 0, width = 5;
1116	int standard_prolog;
1117	char start[80 + 1];
1118
1119	/* Starts with its own help message? */
1120	standard_prolog = list[0].name != OPT_HELP_STR;
1121
1122	/* Find the widest help. */
1123	for (o = list; o->name; o++) {
1124	if (o->name == OPT_MORE_STR)
1125	continue;
1126	i = 2 + (int)strlen(o->name);
1127	if (o->valtype != '-')
1128	i += 1 + strlen(valtype2param(o));
1129	if (i < MAX_OPT_HELP_WIDTH && i > width)
1130	width = i;
1131	OPENSSL_assert(i < (int)sizeof(start));
1132	}
1133
1134	if (standard_prolog) {
1135	opt_printf_stderr("Usage: %s [options]\n", prog);
1136	if (list[0].name != OPT_SECTION_STR)
1137	opt_printf_stderr("Valid options are:\n", prog);
1138	}
1139
1140	/* Now let's print. */
1141	for (o = list; o->name; o++) {
1142	if (o->name == OPT_PARAM_STR)
1143	sawparams = 1;
1144	opt_print(o, sawparams, width);
1145	}
1146	}
1147
1148	/* opt_isdir section */
1149	#ifdef _WIN32
1150	# include <windows.h>
1151	int opt_isdir(const char *name)
1152	{
1153	DWORD attr;
1154	# if defined(UNICODE) \|\| defined(_UNICODE)
1155	size_t i, len_0 = strlen(name) + 1;
1156	WCHAR tempname[MAX_PATH];
1157
1158	if (len_0 > MAX_PATH)
1159	return -1;
1160
1161	# if !defined(_WIN32_WCE) \|\| _WIN32_WCE>=101
1162	if (!MultiByteToWideChar(CP_ACP, 0, name, len_0, tempname, MAX_PATH))
1163	# endif
1164	for (i = 0; i < len_0; i++)
1165	tempname[i] = (WCHAR)name[i];
1166
1167	attr = GetFileAttributes(tempname);
1168	# else
1169	attr = GetFileAttributes(name);
1170	# endif
1171	if (attr == INVALID_FILE_ATTRIBUTES)
1172	return -1;
1173	return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0);
1174	}
1175	#else
1176	# include <sys/stat.h>
1177	# ifndef S_ISDIR
1178	# if defined(_S_IFMT) && defined(_S_IFDIR)
1179	# define S_ISDIR(a) (((a) & _S_IFMT) == _S_IFDIR)
1180	# else
1181	# define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
1182	# endif
1183	# endif
1184
1185	int opt_isdir(const char *name)
1186	{
1187	# if defined(S_ISDIR)
1188	struct stat st;
1189
1190	if (stat(name, &st) == 0)
1191	return S_ISDIR(st.st_mode);
1192	else
1193	return -1;
1194	# else
1195	return -1;
1196	# endif
1197	}
1198	#endif

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