xref: /openssl/apps/include/opt.h (revision b8590b2f)
1 /*
2  * Copyright 2018-2023 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 #ifndef OSSL_APPS_OPT_H
10 #define OSSL_APPS_OPT_H
11 
12 #include <sys/types.h>
13 #include <openssl/e_os2.h>
14 #include <openssl/types.h>
15 #include <stdarg.h>
16 
17 #define OPT_COMMON OPT_ERR = -1, OPT_EOF = 0, OPT_HELP
18 
19 /*
20  * Common verification options.
21  */
22 # define OPT_V_ENUM \
23         OPT_V__FIRST=2000, \
24         OPT_V_POLICY, OPT_V_PURPOSE, OPT_V_VERIFY_NAME, OPT_V_VERIFY_DEPTH, \
25         OPT_V_ATTIME, OPT_V_VERIFY_HOSTNAME, OPT_V_VERIFY_EMAIL, \
26         OPT_V_VERIFY_IP, OPT_V_IGNORE_CRITICAL, OPT_V_ISSUER_CHECKS, \
27         OPT_V_CRL_CHECK, OPT_V_CRL_CHECK_ALL, OPT_V_POLICY_CHECK, \
28         OPT_V_EXPLICIT_POLICY, OPT_V_INHIBIT_ANY, OPT_V_INHIBIT_MAP, \
29         OPT_V_X509_STRICT, OPT_V_EXTENDED_CRL, OPT_V_USE_DELTAS, \
30         OPT_V_POLICY_PRINT, OPT_V_CHECK_SS_SIG, OPT_V_TRUSTED_FIRST, \
31         OPT_V_SUITEB_128_ONLY, OPT_V_SUITEB_128, OPT_V_SUITEB_192, \
32         OPT_V_PARTIAL_CHAIN, OPT_V_NO_ALT_CHAINS, OPT_V_NO_CHECK_TIME, \
33         OPT_V_VERIFY_AUTH_LEVEL, OPT_V_ALLOW_PROXY_CERTS, \
34         OPT_V__LAST
35 
36 # define OPT_V_OPTIONS \
37         OPT_SECTION("Validation"), \
38         { "policy", OPT_V_POLICY, 's', "adds policy to the acceptable policy set"}, \
39         { "purpose", OPT_V_PURPOSE, 's', \
40             "certificate chain purpose"}, \
41         { "verify_name", OPT_V_VERIFY_NAME, 's', "verification policy name"}, \
42         { "verify_depth", OPT_V_VERIFY_DEPTH, 'n', \
43             "chain depth limit" }, \
44         { "auth_level", OPT_V_VERIFY_AUTH_LEVEL, 'n', \
45             "chain authentication security level" }, \
46         { "attime", OPT_V_ATTIME, 'M', "verification epoch time" }, \
47         { "verify_hostname", OPT_V_VERIFY_HOSTNAME, 's', \
48             "expected peer hostname" }, \
49         { "verify_email", OPT_V_VERIFY_EMAIL, 's', \
50             "expected peer email" }, \
51         { "verify_ip", OPT_V_VERIFY_IP, 's', \
52             "expected peer IP address" }, \
53         { "ignore_critical", OPT_V_IGNORE_CRITICAL, '-', \
54             "permit unhandled critical extensions"}, \
55         { "issuer_checks", OPT_V_ISSUER_CHECKS, '-', "(deprecated)"}, \
56         { "crl_check", OPT_V_CRL_CHECK, '-', "check leaf certificate revocation" }, \
57         { "crl_check_all", OPT_V_CRL_CHECK_ALL, '-', "check full chain revocation" }, \
58         { "policy_check", OPT_V_POLICY_CHECK, '-', "perform rfc5280 policy checks"}, \
59         { "explicit_policy", OPT_V_EXPLICIT_POLICY, '-', \
60             "set policy variable require-explicit-policy"}, \
61         { "inhibit_any", OPT_V_INHIBIT_ANY, '-', \
62             "set policy variable inhibit-any-policy"}, \
63         { "inhibit_map", OPT_V_INHIBIT_MAP, '-', \
64             "set policy variable inhibit-policy-mapping"}, \
65         { "x509_strict", OPT_V_X509_STRICT, '-', \
66             "disable certificate compatibility work-arounds"}, \
67         { "extended_crl", OPT_V_EXTENDED_CRL, '-', \
68             "enable extended CRL features"}, \
69         { "use_deltas", OPT_V_USE_DELTAS, '-', \
70             "use delta CRLs"}, \
71         { "policy_print", OPT_V_POLICY_PRINT, '-', \
72             "print policy processing diagnostics"}, \
73         { "check_ss_sig", OPT_V_CHECK_SS_SIG, '-', \
74             "check root CA self-signatures"}, \
75         { "trusted_first", OPT_V_TRUSTED_FIRST, '-', \
76             "search trust store first (default)" }, \
77         { "suiteB_128_only", OPT_V_SUITEB_128_ONLY, '-', "Suite B 128-bit-only mode"}, \
78         { "suiteB_128", OPT_V_SUITEB_128, '-', \
79             "Suite B 128-bit mode allowing 192-bit algorithms"}, \
80         { "suiteB_192", OPT_V_SUITEB_192, '-', "Suite B 192-bit-only mode" }, \
81         { "partial_chain", OPT_V_PARTIAL_CHAIN, '-', \
82             "accept chains anchored by intermediate trust-store CAs"}, \
83         { "no_alt_chains", OPT_V_NO_ALT_CHAINS, '-', "(deprecated)" }, \
84         { "no_check_time", OPT_V_NO_CHECK_TIME, '-', "ignore certificate validity time" }, \
85         { "allow_proxy_certs", OPT_V_ALLOW_PROXY_CERTS, '-', "allow the use of proxy certificates" }
86 
87 # define OPT_V_CASES \
88         OPT_V__FIRST: case OPT_V__LAST: break; \
89         case OPT_V_POLICY: \
90         case OPT_V_PURPOSE: \
91         case OPT_V_VERIFY_NAME: \
92         case OPT_V_VERIFY_DEPTH: \
93         case OPT_V_VERIFY_AUTH_LEVEL: \
94         case OPT_V_ATTIME: \
95         case OPT_V_VERIFY_HOSTNAME: \
96         case OPT_V_VERIFY_EMAIL: \
97         case OPT_V_VERIFY_IP: \
98         case OPT_V_IGNORE_CRITICAL: \
99         case OPT_V_ISSUER_CHECKS: \
100         case OPT_V_CRL_CHECK: \
101         case OPT_V_CRL_CHECK_ALL: \
102         case OPT_V_POLICY_CHECK: \
103         case OPT_V_EXPLICIT_POLICY: \
104         case OPT_V_INHIBIT_ANY: \
105         case OPT_V_INHIBIT_MAP: \
106         case OPT_V_X509_STRICT: \
107         case OPT_V_EXTENDED_CRL: \
108         case OPT_V_USE_DELTAS: \
109         case OPT_V_POLICY_PRINT: \
110         case OPT_V_CHECK_SS_SIG: \
111         case OPT_V_TRUSTED_FIRST: \
112         case OPT_V_SUITEB_128_ONLY: \
113         case OPT_V_SUITEB_128: \
114         case OPT_V_SUITEB_192: \
115         case OPT_V_PARTIAL_CHAIN: \
116         case OPT_V_NO_ALT_CHAINS: \
117         case OPT_V_NO_CHECK_TIME: \
118         case OPT_V_ALLOW_PROXY_CERTS
119 
120 /*
121  * Common "extended validation" options.
122  */
123 # define OPT_X_ENUM \
124         OPT_X__FIRST=1000, \
125         OPT_X_KEY, OPT_X_CERT, OPT_X_CHAIN, OPT_X_CHAIN_BUILD, \
126         OPT_X_CERTFORM, OPT_X_KEYFORM, \
127         OPT_X__LAST
128 
129 # define OPT_X_OPTIONS \
130         OPT_SECTION("Extended certificate"), \
131         { "xkey", OPT_X_KEY, '<', "key for Extended certificates"}, \
132         { "xcert", OPT_X_CERT, '<', "cert for Extended certificates"}, \
133         { "xchain", OPT_X_CHAIN, '<', "chain for Extended certificates"}, \
134         { "xchain_build", OPT_X_CHAIN_BUILD, '-', \
135             "build certificate chain for the extended certificates"}, \
136         { "xcertform", OPT_X_CERTFORM, 'F', \
137             "format of Extended certificate (PEM/DER/P12); has no effect" }, \
138         { "xkeyform", OPT_X_KEYFORM, 'F', \
139             "format of Extended certificate's key (DER/PEM/P12); has no effect"}
140 
141 # define OPT_X_CASES \
142         OPT_X__FIRST: case OPT_X__LAST: break; \
143         case OPT_X_KEY: \
144         case OPT_X_CERT: \
145         case OPT_X_CHAIN: \
146         case OPT_X_CHAIN_BUILD: \
147         case OPT_X_CERTFORM: \
148         case OPT_X_KEYFORM
149 
150 /*
151  * Common SSL options.
152  * Any changes here must be coordinated with ../ssl/ssl_conf.c
153  */
154 # define OPT_S_ENUM \
155         OPT_S__FIRST=3000, \
156         OPT_S_NOSSL3, OPT_S_NOTLS1, OPT_S_NOTLS1_1, OPT_S_NOTLS1_2, \
157         OPT_S_NOTLS1_3, OPT_S_BUGS, OPT_S_NO_COMP, OPT_S_NOTICKET, \
158         OPT_S_SERVERPREF, OPT_S_LEGACYRENEG, OPT_S_CLIENTRENEG, \
159         OPT_S_LEGACYCONN, \
160         OPT_S_ONRESUMP, OPT_S_NOLEGACYCONN, \
161         OPT_S_ALLOW_NO_DHE_KEX, OPT_S_PREFER_NO_DHE_KEX, \
162         OPT_S_PRIORITIZE_CHACHA, \
163         OPT_S_STRICT, OPT_S_SIGALGS, OPT_S_CLIENTSIGALGS, OPT_S_GROUPS, \
164         OPT_S_CURVES, OPT_S_NAMEDCURVE, OPT_S_CIPHER, OPT_S_CIPHERSUITES, \
165         OPT_S_RECORD_PADDING, OPT_S_DEBUGBROKE, OPT_S_COMP, \
166         OPT_S_MINPROTO, OPT_S_MAXPROTO, \
167         OPT_S_NO_RENEGOTIATION, OPT_S_NO_MIDDLEBOX, OPT_S_NO_ETM, \
168         OPT_S_NO_EMS, \
169         OPT_S_NO_TX_CERT_COMP, \
170         OPT_S_NO_RX_CERT_COMP, \
171         OPT_S__LAST
172 
173 # define OPT_S_OPTIONS \
174         OPT_SECTION("TLS/SSL"), \
175         {"no_ssl3", OPT_S_NOSSL3, '-',"Just disable SSLv3" }, \
176         {"no_tls1", OPT_S_NOTLS1, '-', "Just disable TLSv1"}, \
177         {"no_tls1_1", OPT_S_NOTLS1_1, '-', "Just disable TLSv1.1" }, \
178         {"no_tls1_2", OPT_S_NOTLS1_2, '-', "Just disable TLSv1.2"}, \
179         {"no_tls1_3", OPT_S_NOTLS1_3, '-', "Just disable TLSv1.3"}, \
180         {"bugs", OPT_S_BUGS, '-', "Turn on SSL bug compatibility"}, \
181         {"no_comp", OPT_S_NO_COMP, '-', "Disable SSL/TLS compression (default)" }, \
182         {"comp", OPT_S_COMP, '-', "Use SSL/TLS-level compression" }, \
183         {"no_tx_cert_comp", OPT_S_NO_TX_CERT_COMP, '-', "Disable sending TLSv1.3 compressed certificates" }, \
184         {"no_rx_cert_comp", OPT_S_NO_RX_CERT_COMP, '-', "Disable receiving TLSv1.3 compressed certificates" }, \
185         {"no_ticket", OPT_S_NOTICKET, '-', \
186             "Disable use of TLS session tickets"}, \
187         {"serverpref", OPT_S_SERVERPREF, '-', "Use server's cipher preferences"}, \
188         {"legacy_renegotiation", OPT_S_LEGACYRENEG, '-', \
189             "Enable use of legacy renegotiation (dangerous)"}, \
190         {"client_renegotiation", OPT_S_CLIENTRENEG, '-', \
191             "Allow client-initiated renegotiation" }, \
192         {"no_renegotiation", OPT_S_NO_RENEGOTIATION, '-', \
193             "Disable all renegotiation."}, \
194         {"legacy_server_connect", OPT_S_LEGACYCONN, '-', \
195             "Allow initial connection to servers that don't support RI"}, \
196         {"no_resumption_on_reneg", OPT_S_ONRESUMP, '-', \
197             "Disallow session resumption on renegotiation"}, \
198         {"no_legacy_server_connect", OPT_S_NOLEGACYCONN, '-', \
199             "Disallow initial connection to servers that don't support RI"}, \
200         {"allow_no_dhe_kex", OPT_S_ALLOW_NO_DHE_KEX, '-', \
201             "In TLSv1.3 allow non-(ec)dhe based key exchange on resumption"}, \
202         {"prefer_no_dhe_kex", OPT_S_PREFER_NO_DHE_KEX, '-', \
203             "In TLSv1.3 prefer non-(ec)dhe over (ec)dhe-based key exchange on resumption"}, \
204         {"prioritize_chacha", OPT_S_PRIORITIZE_CHACHA, '-', \
205             "Prioritize ChaCha ciphers when preferred by clients"}, \
206         {"strict", OPT_S_STRICT, '-', \
207             "Enforce strict certificate checks as per TLS standard"}, \
208         {"sigalgs", OPT_S_SIGALGS, 's', \
209             "Signature algorithms to support (colon-separated list)" }, \
210         {"client_sigalgs", OPT_S_CLIENTSIGALGS, 's', \
211             "Signature algorithms to support for client certificate" \
212             " authentication (colon-separated list)" }, \
213         {"groups", OPT_S_GROUPS, 's', \
214             "Groups to advertise (colon-separated list)" }, \
215         {"curves", OPT_S_CURVES, 's', \
216             "Groups to advertise (colon-separated list)" }, \
217         {"named_curve", OPT_S_NAMEDCURVE, 's', \
218             "Elliptic curve used for ECDHE (server-side only)" }, \
219         {"cipher", OPT_S_CIPHER, 's', "Specify TLSv1.2 and below cipher list to be used"}, \
220         {"ciphersuites", OPT_S_CIPHERSUITES, 's', "Specify TLSv1.3 ciphersuites to be used"}, \
221         {"min_protocol", OPT_S_MINPROTO, 's', "Specify the minimum protocol version to be used"}, \
222         {"max_protocol", OPT_S_MAXPROTO, 's', "Specify the maximum protocol version to be used"}, \
223         {"record_padding", OPT_S_RECORD_PADDING, 's', \
224             "Block size to pad TLS 1.3 records to."}, \
225         {"debug_broken_protocol", OPT_S_DEBUGBROKE, '-', \
226             "Perform all sorts of protocol violations for testing purposes"}, \
227         {"no_middlebox", OPT_S_NO_MIDDLEBOX, '-', \
228             "Disable TLSv1.3 middlebox compat mode" }, \
229         {"no_etm", OPT_S_NO_ETM, '-', \
230             "Disable Encrypt-then-Mac extension"}, \
231         {"no_ems", OPT_S_NO_EMS, '-', \
232             "Disable Extended master secret extension"}
233 
234 # define OPT_S_CASES \
235         OPT_S__FIRST: case OPT_S__LAST: break; \
236         case OPT_S_NOSSL3: \
237         case OPT_S_NOTLS1: \
238         case OPT_S_NOTLS1_1: \
239         case OPT_S_NOTLS1_2: \
240         case OPT_S_NOTLS1_3: \
241         case OPT_S_BUGS: \
242         case OPT_S_NO_COMP: \
243         case OPT_S_COMP: \
244         case OPT_S_NO_TX_CERT_COMP: \
245         case OPT_S_NO_RX_CERT_COMP: \
246         case OPT_S_NOTICKET: \
247         case OPT_S_SERVERPREF: \
248         case OPT_S_LEGACYRENEG: \
249         case OPT_S_CLIENTRENEG: \
250         case OPT_S_LEGACYCONN: \
251         case OPT_S_ONRESUMP: \
252         case OPT_S_NOLEGACYCONN: \
253         case OPT_S_ALLOW_NO_DHE_KEX: \
254         case OPT_S_PREFER_NO_DHE_KEX: \
255         case OPT_S_PRIORITIZE_CHACHA: \
256         case OPT_S_STRICT: \
257         case OPT_S_SIGALGS: \
258         case OPT_S_CLIENTSIGALGS: \
259         case OPT_S_GROUPS: \
260         case OPT_S_CURVES: \
261         case OPT_S_NAMEDCURVE: \
262         case OPT_S_CIPHER: \
263         case OPT_S_CIPHERSUITES: \
264         case OPT_S_RECORD_PADDING: \
265         case OPT_S_NO_RENEGOTIATION: \
266         case OPT_S_MINPROTO: \
267         case OPT_S_MAXPROTO: \
268         case OPT_S_DEBUGBROKE: \
269         case OPT_S_NO_MIDDLEBOX: \
270         case OPT_S_NO_ETM: \
271         case OPT_S_NO_EMS
272 
273 #define IS_NO_PROT_FLAG(o) \
274  (o == OPT_S_NOSSL3 || o == OPT_S_NOTLS1 || o == OPT_S_NOTLS1_1 \
275   || o == OPT_S_NOTLS1_2 || o == OPT_S_NOTLS1_3)
276 
277 /*
278  * Random state options.
279  */
280 # define OPT_R_ENUM \
281         OPT_R__FIRST=1500, OPT_R_RAND, OPT_R_WRITERAND, OPT_R__LAST
282 
283 # define OPT_R_OPTIONS \
284     OPT_SECTION("Random state"), \
285     {"rand", OPT_R_RAND, 's', "Load the given file(s) into the random number generator"}, \
286     {"writerand", OPT_R_WRITERAND, '>', "Write random data to the specified file"}
287 
288 # define OPT_R_CASES \
289         OPT_R__FIRST: case OPT_R__LAST: break; \
290         case OPT_R_RAND: case OPT_R_WRITERAND
291 
292 /*
293  * Provider options.
294  */
295 # define OPT_PROV_ENUM \
296         OPT_PROV__FIRST=1600, \
297         OPT_PROV_PROVIDER, OPT_PROV_PROVIDER_PATH, OPT_PROV_PROPQUERY, \
298         OPT_PROV__LAST
299 
300 # define OPT_CONFIG_OPTION \
301         { "config", OPT_CONFIG, '<', "Load a configuration file (this may load modules)" }
302 
303 # define OPT_PROV_OPTIONS \
304         OPT_SECTION("Provider"), \
305         { "provider-path", OPT_PROV_PROVIDER_PATH, 's', "Provider load path (must be before 'provider' argument if required)" }, \
306         { "provider", OPT_PROV_PROVIDER, 's', "Provider to load (can be specified multiple times)" }, \
307         { "propquery", OPT_PROV_PROPQUERY, 's', "Property query used when fetching algorithms" }
308 
309 # define OPT_PROV_CASES \
310         OPT_PROV__FIRST: case OPT_PROV__LAST: break; \
311         case OPT_PROV_PROVIDER: \
312         case OPT_PROV_PROVIDER_PATH: \
313         case OPT_PROV_PROPQUERY
314 
315 /*
316  * Option parsing.
317  */
318 extern const char OPT_HELP_STR[];
319 extern const char OPT_MORE_STR[];
320 extern const char OPT_SECTION_STR[];
321 extern const char OPT_PARAM_STR[];
322 
323 typedef struct options_st {
324     const char *name;
325     int retval;
326     /*-
327      * value type:
328      *
329      *   '-' no value (also the value zero)
330      *   'n' number (type 'int')
331      *   'p' positive number (type 'int')
332      *   'u' unsigned number (type 'unsigned long')
333      *   'l' number (type 'unsigned long')
334      *   'M' number (type 'intmax_t')
335      *   'U' unsigned number (type 'uintmax_t')
336      *   's' string
337      *   '<' input file
338      *   '>' output file
339      *   '/' directory
340      *   'f' any format                    [OPT_FMT_ANY]
341      *   'F' der/pem format                [OPT_FMT_PEMDER]
342      *   'A' any ASN1, der/pem/b64 format  [OPT_FMT_ASN1]
343      *   'E' der/pem/engine format         [OPT_FMT_PDE]
344      *   'c' pem/der/smime format          [OPT_FMT_PDS]
345      *
346      * The 'l', 'n' and 'u' value types include the values zero,
347      * the 'p' value type does not.
348      */
349     int valtype;
350     const char *helpstr;
351 } OPTIONS;
352 /* Special retval values: */
353 #define OPT_PARAM 0 /* same as OPT_EOF usually defined in apps */
354 #define OPT_DUP -2 /* marks duplicate occurrence of option in help output */
355 
356 /*
357  * A string/int pairing; widely use for option value lookup, hence the
358  * name OPT_PAIR. But that name is misleading in s_cb.c, so we also use
359  * the "generic" name STRINT_PAIR.
360  */
361 typedef struct string_int_pair_st {
362     const char *name;
363     int retval;
364 } OPT_PAIR, STRINT_PAIR;
365 
366 /* Flags to pass into opt_format; see FORMAT_xxx, below. */
367 # define OPT_FMT_PEM             (1L <<  1)
368 # define OPT_FMT_DER             (1L <<  2)
369 # define OPT_FMT_B64             (1L <<  3)
370 # define OPT_FMT_PKCS12          (1L <<  4)
371 # define OPT_FMT_SMIME           (1L <<  5)
372 # define OPT_FMT_ENGINE          (1L <<  6)
373 # define OPT_FMT_MSBLOB          (1L <<  7)
374 # define OPT_FMT_NSS             (1L <<  8)
375 # define OPT_FMT_TEXT            (1L <<  9)
376 # define OPT_FMT_HTTP            (1L << 10)
377 # define OPT_FMT_PVK             (1L << 11)
378 
379 # define OPT_FMT_PEMDER  (OPT_FMT_PEM | OPT_FMT_DER)
380 # define OPT_FMT_ASN1    (OPT_FMT_PEM | OPT_FMT_DER | OPT_FMT_B64)
381 # define OPT_FMT_PDE     (OPT_FMT_PEMDER | OPT_FMT_ENGINE)
382 # define OPT_FMT_PDS     (OPT_FMT_PEMDER | OPT_FMT_SMIME)
383 # define OPT_FMT_ANY     ( \
384         OPT_FMT_PEM | OPT_FMT_DER | OPT_FMT_B64 | \
385         OPT_FMT_PKCS12 | OPT_FMT_SMIME |                     \
386         OPT_FMT_ENGINE | OPT_FMT_MSBLOB | OPT_FMT_NSS | \
387         OPT_FMT_TEXT | OPT_FMT_HTTP | OPT_FMT_PVK)
388 
389 /* Divide options into sections when displaying usage */
390 #define OPT_SECTION(sec) { OPT_SECTION_STR, 1, '-', sec " options:\n" }
391 #define OPT_PARAMETERS() { OPT_PARAM_STR, 1, '-', "Parameters:\n" }
392 
393 const char *opt_path_end(const char *filename);
394 char *opt_init(int ac, char **av, const OPTIONS *o);
395 char *opt_progname(const char *argv0);
396 char *opt_appname(const char *argv0);
397 char *opt_getprog(void);
398 void opt_help(const OPTIONS *list);
399 
400 void opt_begin(void);
401 int opt_next(void);
402 char *opt_flag(void);
403 char *opt_arg(void);
404 char *opt_unknown(void);
405 void reset_unknown(void);
406 int opt_cipher(const char *name, EVP_CIPHER **cipherp);
407 int opt_cipher_any(const char *name, EVP_CIPHER **cipherp);
408 int opt_cipher_silent(const char *name, EVP_CIPHER **cipherp);
409 int opt_check_md(const char *name);
410 int opt_md(const char *name, EVP_MD **mdp);
411 int opt_md_silent(const char *name, EVP_MD **mdp);
412 
413 int opt_int(const char *arg, int *result);
414 void opt_set_unknown_name(const char *name);
415 int opt_int_arg(void);
416 int opt_long(const char *arg, long *result);
417 int opt_ulong(const char *arg, unsigned long *result);
418 int opt_intmax(const char *arg, ossl_intmax_t *result);
419 int opt_uintmax(const char *arg, ossl_uintmax_t *result);
420 
421 int opt_isdir(const char *name);
422 int opt_format(const char *s, unsigned long flags, int *result);
423 void print_format_error(int format, unsigned long flags);
424 int opt_printf_stderr(const char *fmt, ...);
425 int opt_string(const char *name, const char **options);
426 int opt_pair(const char *arg, const OPT_PAIR *pairs, int *result);
427 
428 int opt_verify(int i, X509_VERIFY_PARAM *vpm);
429 int opt_rand(int i);
430 int opt_provider(int i);
431 int opt_provider_option_given(void);
432 
433 char **opt_rest(void);
434 int opt_num_rest(void);
435 int opt_check_rest_arg(const char *expected);
436 
437 /* Returns non-zero if legacy paths are still available */
438 int opt_legacy_okay(void);
439 
440 
441 #endif /* OSSL_APPS_OPT_H */
442