apps/lib/opt.c

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