apps/apps.c

   1 /*
   2  * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 #if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
  11 /*
  12  * On VMS, you need to define this to get the declaration of fileno().  The
  13  * value 2 is to make sure no function defined in POSIX-2 is left undefined.
  14  */
  15 # define _POSIX_C_SOURCE 2
  16 #endif
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <sys/types.h>
  22 #ifndef OPENSSL_NO_POSIX_IO
  23 # include <sys/stat.h>
  24 # include <fcntl.h>
  25 #endif
  26 #include <ctype.h>
  27 #include <errno.h>
  28 #include <openssl/err.h>
  29 #include <openssl/x509.h>
  30 #include <openssl/x509v3.h>
  31 #include <openssl/pem.h>
  32 #include <openssl/pkcs12.h>
  33 #include <openssl/ui.h>
  34 #include <openssl/safestack.h>
  35 #ifndef OPENSSL_NO_ENGINE
  36 # include <openssl/engine.h>
  37 #endif
  38 #ifndef OPENSSL_NO_RSA
  39 # include <openssl/rsa.h>
  40 #endif
  41 #include <openssl/bn.h>
  42 #include <openssl/ssl.h>
  43 #include "s_apps.h"
  44 #include "apps.h"
  45
  46 #ifdef _WIN32
  47 static int WIN32_rename(const char *from, const char *to);
  48 # define rename(from,to) WIN32_rename((from),(to))
  49 #endif
  50
  51 typedef struct {
  52     const char *name;
  53     unsigned long flag;
  54     unsigned long mask;
  55 } NAME_EX_TBL;
  56
  57 static UI_METHOD *ui_method = NULL;
  58 static const UI_METHOD *ui_fallback_method = NULL;
  59
  60 static int set_table_opts(unsigned long *flags, const char *arg,
  61                           const NAME_EX_TBL * in_tbl);
  62 static int set_multi_opts(unsigned long *flags, const char *arg,
  63                           const NAME_EX_TBL * in_tbl);
  64
  65 int app_init(long mesgwin);
  66
  67 int chopup_args(ARGS *arg, char *buf)
  68 {
  69     int quoted;
  70     char c = '\0', *p = NULL;
  71
  72     arg->argc = 0;
  73     if (arg->size == 0) {
  74         arg->size = 20;
  75         arg->argv = app_malloc(sizeof(*arg->argv) * arg->size, "argv space");
  76     }
  77
  78     for (p = buf;;) {
  79         /* Skip whitespace. */
  80         while (*p && isspace(_UC(*p)))
  81             p++;
  82         if (!*p)
  83             break;
  84
  85         /* The start of something good :-) */
  86         if (arg->argc >= arg->size) {
  87             char **tmp;
  88             arg->size += 20;
  89             tmp = OPENSSL_realloc(arg->argv, sizeof(*arg->argv) * arg->size);
  90             if (tmp == NULL)
  91                 return 0;
  92             arg->argv = tmp;
  93         }
  94         quoted = *p == '\'' || *p == '"';
  95         if (quoted)
  96             c = *p++;
  97         arg->argv[arg->argc++] = p;
  98
  99         /* now look for the end of this */
 100         if (quoted) {
 101             while (*p && *p != c)
 102                 p++;
 103             *p++ = '\0';
 104         } else {
 105             while (*p && !isspace(_UC(*p)))
 106                 p++;
 107             if (*p)
 108                 *p++ = '\0';
 109         }
 110     }
 111     arg->argv[arg->argc] = NULL;
 112     return 1;
 113 }
 114
 115 #ifndef APP_INIT
 116 int app_init(long mesgwin)
 117 {
 118     return 1;
 119 }
 120 #endif
 121
 122 int ctx_set_verify_locations(SSL_CTX *ctx, const char *CAfile,
 123                              const char *CApath, int noCAfile, int noCApath)
 124 {
 125     if (CAfile == NULL && CApath == NULL) {
 126         if (!noCAfile && SSL_CTX_set_default_verify_file(ctx) <= 0)
 127             return 0;
 128         if (!noCApath && SSL_CTX_set_default_verify_dir(ctx) <= 0)
 129             return 0;
 130
 131         return 1;
 132     }
 133     return SSL_CTX_load_verify_locations(ctx, CAfile, CApath);
 134 }
 135
 136 #ifndef OPENSSL_NO_CT
 137
 138 int ctx_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
 139 {
 140     if (path == NULL)
 141         return SSL_CTX_set_default_ctlog_list_file(ctx);
 142
 143     return SSL_CTX_set_ctlog_list_file(ctx, path);
 144 }
 145
 146 #endif
 147
 148 static unsigned long nmflag = 0;
 149 static char nmflag_set = 0;
 150
 151 int set_nameopt(const char *arg)
 152 {
 153     int ret = set_name_ex(&nmflag, arg);
 154
 155     if (ret)
 156         nmflag_set = 1;
 157
 158     return ret;
 159 }
 160
 161 unsigned long get_nameopt(void)
 162 {
 163     return (nmflag_set) ? nmflag : XN_FLAG_ONELINE;
 164 }
 165
 166 int dump_cert_text(BIO *out, X509 *x)
 167 {
 168     print_name(out, "subject=", X509_get_subject_name(x), get_nameopt());
 169     BIO_puts(out, "\n");
 170     print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 171     BIO_puts(out, "\n");
 172
 173     return 0;
 174 }
 175
 176 static int ui_open(UI *ui)
 177 {
 178     int (*opener)(UI *ui) = UI_method_get_opener(ui_fallback_method);
 179
 180     if (opener)
 181         return opener(ui);
 182     return 1;
 183 }
 184
 185 static int ui_read(UI *ui, UI_STRING *uis)
 186 {
 187     int (*reader)(UI *ui, UI_STRING *uis) = NULL;
 188
 189     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 190         && UI_get0_user_data(ui)) {
 191         switch (UI_get_string_type(uis)) {
 192         case UIT_PROMPT:
 193         case UIT_VERIFY:
 194             {
 195                 const char *password =
 196                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 197                 if (password && password[0] != '\0') {
 198                     UI_set_result(ui, uis, password);
 199                     return 1;
 200                 }
 201             }
 202             break;
 203         case UIT_NONE:
 204         case UIT_BOOLEAN:
 205         case UIT_INFO:
 206         case UIT_ERROR:
 207             break;
 208         }
 209     }
 210
 211     reader = UI_method_get_reader(ui_fallback_method);
 212     if (reader)
 213         return reader(ui, uis);
 214     return 1;
 215 }
 216
 217 static int ui_write(UI *ui, UI_STRING *uis)
 218 {
 219     int (*writer)(UI *ui, UI_STRING *uis) = NULL;
 220
 221     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 222         && UI_get0_user_data(ui)) {
 223         switch (UI_get_string_type(uis)) {
 224         case UIT_PROMPT:
 225         case UIT_VERIFY:
 226             {
 227                 const char *password =
 228                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 229                 if (password && password[0] != '\0')
 230                     return 1;
 231             }
 232             break;
 233         case UIT_NONE:
 234         case UIT_BOOLEAN:
 235         case UIT_INFO:
 236         case UIT_ERROR:
 237             break;
 238         }
 239     }
 240
 241     writer = UI_method_get_writer(ui_fallback_method);
 242     if (writer)
 243         return writer(ui, uis);
 244     return 1;
 245 }
 246
 247 static int ui_close(UI *ui)
 248 {
 249     int (*closer)(UI *ui) = UI_method_get_closer(ui_fallback_method);
 250
 251     if (closer)
 252         return closer(ui);
 253     return 1;
 254 }
 255
 256 int setup_ui_method(void)
 257 {
 258     ui_fallback_method = UI_null();
 259 #ifndef OPENSSL_NO_UI_CONSOLE
 260     ui_fallback_method = UI_OpenSSL();
 261 #endif
 262     ui_method = UI_create_method("OpenSSL application user interface");
 263     UI_method_set_opener(ui_method, ui_open);
 264     UI_method_set_reader(ui_method, ui_read);
 265     UI_method_set_writer(ui_method, ui_write);
 266     UI_method_set_closer(ui_method, ui_close);
 267     return 0;
 268 }
 269
 270 void destroy_ui_method(void)
 271 {
 272     if (ui_method) {
 273         UI_destroy_method(ui_method);
 274         ui_method = NULL;
 275     }
 276 }
 277
 278 const UI_METHOD *get_ui_method(void)
 279 {
 280     return ui_method;
 281 }
 282
 283 int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_tmp)
 284 {
 285     int res = 0;
 286     UI *ui = NULL;
 287     PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
 288
 289     ui = UI_new_method(ui_method);
 290     if (ui) {
 291         int ok = 0;
 292         char *buff = NULL;
 293         int ui_flags = 0;
 294         const char *prompt_info = NULL;
 295         char *prompt;
 296
 297         if (cb_data != NULL && cb_data->prompt_info != NULL)
 298             prompt_info = cb_data->prompt_info;
 299         prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
 300         if (!prompt) {
 301             BIO_printf(bio_err, "Out of memory\n");
 302             UI_free(ui);
 303             return 0;
 304         }
 305
 306         ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
 307         UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
 308
 309         /* We know that there is no previous user data to return to us */
 310         (void)UI_add_user_data(ui, cb_data);
 311
 312         ok = UI_add_input_string(ui, prompt, ui_flags, buf,
 313                                  PW_MIN_LENGTH, bufsiz - 1);
 314
 315         if (ok >= 0 && verify) {
 316             buff = app_malloc(bufsiz, "password buffer");
 317             ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
 318                                       PW_MIN_LENGTH, bufsiz - 1, buf);
 319         }
 320         if (ok >= 0)
 321             do {
 322                 ok = UI_process(ui);
 323             } while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
 324
 325         OPENSSL_clear_free(buff, (unsigned int)bufsiz);
 326
 327         if (ok >= 0)
 328             res = strlen(buf);
 329         if (ok == -1) {
 330             BIO_printf(bio_err, "User interface error\n");
 331             ERR_print_errors(bio_err);
 332             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 333             res = 0;
 334         }
 335         if (ok == -2) {
 336             BIO_printf(bio_err, "aborted!\n");
 337             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 338             res = 0;
 339         }
 340         UI_free(ui);
 341         OPENSSL_free(prompt);
 342     }
 343     return res;
 344 }
 345
 346 static char *app_get_pass(const char *arg, int keepbio);
 347
 348 int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
 349 {
 350     int same;
 351     if (arg2 == NULL || arg1 == NULL || strcmp(arg1, arg2))
 352         same = 0;
 353     else
 354         same = 1;
 355     if (arg1 != NULL) {
 356         *pass1 = app_get_pass(arg1, same);
 357         if (*pass1 == NULL)
 358             return 0;
 359     } else if (pass1 != NULL) {
 360         *pass1 = NULL;
 361     }
 362     if (arg2 != NULL) {
 363         *pass2 = app_get_pass(arg2, same ? 2 : 0);
 364         if (*pass2 == NULL)
 365             return 0;
 366     } else if (pass2 != NULL) {
 367         *pass2 = NULL;
 368     }
 369     return 1;
 370 }
 371
 372 static char *app_get_pass(const char *arg, int keepbio)
 373 {
 374     char *tmp, tpass[APP_PASS_LEN];
 375     static BIO *pwdbio = NULL;
 376     int i;
 377
 378     if (strncmp(arg, "pass:", 5) == 0)
 379         return OPENSSL_strdup(arg + 5);
 380     if (strncmp(arg, "env:", 4) == 0) {
 381         tmp = getenv(arg + 4);
 382         if (tmp == NULL) {
 383             BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
 384             return NULL;
 385         }
 386         return OPENSSL_strdup(tmp);
 387     }
 388     if (!keepbio || pwdbio == NULL) {
 389         if (strncmp(arg, "file:", 5) == 0) {
 390             pwdbio = BIO_new_file(arg + 5, "r");
 391             if (pwdbio == NULL) {
 392                 BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
 393                 return NULL;
 394             }
 395 #if !defined(_WIN32)
 396             /*
 397              * Under _WIN32, which covers even Win64 and CE, file
 398              * descriptors referenced by BIO_s_fd are not inherited
 399              * by child process and therefore below is not an option.
 400              * It could have been an option if bss_fd.c was operating
 401              * on real Windows descriptors, such as those obtained
 402              * with CreateFile.
 403              */
 404         } else if (strncmp(arg, "fd:", 3) == 0) {
 405             BIO *btmp;
 406             i = atoi(arg + 3);
 407             if (i >= 0)
 408                 pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 409             if ((i < 0) || !pwdbio) {
 410                 BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
 411                 return NULL;
 412             }
 413             /*
 414              * Can't do BIO_gets on an fd BIO so add a buffering BIO
 415              */
 416             btmp = BIO_new(BIO_f_buffer());
 417             pwdbio = BIO_push(btmp, pwdbio);
 418 #endif
 419         } else if (strcmp(arg, "stdin") == 0) {
 420             pwdbio = dup_bio_in(FORMAT_TEXT);
 421             if (!pwdbio) {
 422                 BIO_printf(bio_err, "Can't open BIO for stdin\n");
 423                 return NULL;
 424             }
 425         } else {
 426             BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
 427             return NULL;
 428         }
 429     }
 430     i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 431     if (keepbio != 1) {
 432         BIO_free_all(pwdbio);
 433         pwdbio = NULL;
 434     }
 435     if (i <= 0) {
 436         BIO_printf(bio_err, "Error reading password from BIO\n");
 437         return NULL;
 438     }
 439     tmp = strchr(tpass, '\n');
 440     if (tmp != NULL)
 441         *tmp = 0;
 442     return OPENSSL_strdup(tpass);
 443 }
 444
 445 CONF *app_load_config_bio(BIO *in, const char *filename)
 446 {
 447     long errorline = -1;
 448     CONF *conf;
 449     int i;
 450
 451     conf = NCONF_new(NULL);
 452     i = NCONF_load_bio(conf, in, &errorline);
 453     if (i > 0)
 454         return conf;
 455
 456     if (errorline <= 0) {
 457         BIO_printf(bio_err, "%s: Can't load ", opt_getprog());
 458     } else {
 459         BIO_printf(bio_err, "%s: Error on line %ld of ", opt_getprog(),
 460                    errorline);
 461     }
 462     if (filename != NULL)
 463         BIO_printf(bio_err, "config file \"%s\"\n", filename);
 464     else
 465         BIO_printf(bio_err, "config input");
 466
 467     NCONF_free(conf);
 468     return NULL;
 469 }
 470
 471 CONF *app_load_config(const char *filename)
 472 {
 473     BIO *in;
 474     CONF *conf;
 475
 476     in = bio_open_default(filename, 'r', FORMAT_TEXT);
 477     if (in == NULL)
 478         return NULL;
 479
 480     conf = app_load_config_bio(in, filename);
 481     BIO_free(in);
 482     return conf;
 483 }
 484
 485 CONF *app_load_config_quiet(const char *filename)
 486 {
 487     BIO *in;
 488     CONF *conf;
 489
 490     in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
 491     if (in == NULL)
 492         return NULL;
 493
 494     conf = app_load_config_bio(in, filename);
 495     BIO_free(in);
 496     return conf;
 497 }
 498
 499 int app_load_modules(const CONF *config)
 500 {
 501     CONF *to_free = NULL;
 502
 503     if (config == NULL)
 504         config = to_free = app_load_config_quiet(default_config_file);
 505     if (config == NULL)
 506         return 1;
 507
 508     if (CONF_modules_load(config, NULL, 0) <= 0) {
 509         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
 510         ERR_print_errors(bio_err);
 511         NCONF_free(to_free);
 512         return 0;
 513     }
 514     NCONF_free(to_free);
 515     return 1;
 516 }
 517
 518 int add_oid_section(CONF *conf)
 519 {
 520     char *p;
 521     STACK_OF(CONF_VALUE) *sktmp;
 522     CONF_VALUE *cnf;
 523     int i;
 524
 525     if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
 526         ERR_clear_error();
 527         return 1;
 528     }
 529     if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
 530         BIO_printf(bio_err, "problem loading oid section %s\n", p);
 531         return 0;
 532     }
 533     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 534         cnf = sk_CONF_VALUE_value(sktmp, i);
 535         if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 536             BIO_printf(bio_err, "problem creating object %s=%s\n",
 537                        cnf->name, cnf->value);
 538             return 0;
 539         }
 540     }
 541     return 1;
 542 }
 543
 544 static int load_pkcs12(BIO *in, const char *desc,
 545                        pem_password_cb *pem_cb, void *cb_data,
 546                        EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 547 {
 548     const char *pass;
 549     char tpass[PEM_BUFSIZE];
 550     int len, ret = 0;
 551     PKCS12 *p12;
 552     p12 = d2i_PKCS12_bio(in, NULL);
 553     if (p12 == NULL) {
 554         BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
 555         goto die;
 556     }
 557     /* See if an empty password will do */
 558     if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0)) {
 559         pass = "";
 560     } else {
 561         if (!pem_cb)
 562             pem_cb = (pem_password_cb *)password_callback;
 563         len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
 564         if (len < 0) {
 565             BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
 566             goto die;
 567         }
 568         if (len < PEM_BUFSIZE)
 569             tpass[len] = 0;
 570         if (!PKCS12_verify_mac(p12, tpass, len)) {
 571             BIO_printf(bio_err,
 572                        "Mac verify error (wrong password?) in PKCS12 file for %s\n",
 573                        desc);
 574             goto die;
 575         }
 576         pass = tpass;
 577     }
 578     ret = PKCS12_parse(p12, pass, pkey, cert, ca);
 579  die:
 580     PKCS12_free(p12);
 581     return ret;
 582 }
 583
 584 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 585 static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
 586 {
 587     char *host = NULL, *port = NULL, *path = NULL;
 588     BIO *bio = NULL;
 589     OCSP_REQ_CTX *rctx = NULL;
 590     int use_ssl, rv = 0;
 591     if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
 592         goto err;
 593     if (use_ssl) {
 594         BIO_puts(bio_err, "https not supported\n");
 595         goto err;
 596     }
 597     bio = BIO_new_connect(host);
 598     if (!bio || !BIO_set_conn_port(bio, port))
 599         goto err;
 600     rctx = OCSP_REQ_CTX_new(bio, 1024);
 601     if (rctx == NULL)
 602         goto err;
 603     if (!OCSP_REQ_CTX_http(rctx, "GET", path))
 604         goto err;
 605     if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
 606         goto err;
 607     if (pcert) {
 608         do {
 609             rv = X509_http_nbio(rctx, pcert);
 610         } while (rv == -1);
 611     } else {
 612         do {
 613             rv = X509_CRL_http_nbio(rctx, pcrl);
 614         } while (rv == -1);
 615     }
 616
 617  err:
 618     OPENSSL_free(host);
 619     OPENSSL_free(path);
 620     OPENSSL_free(port);
 621     BIO_free_all(bio);
 622     OCSP_REQ_CTX_free(rctx);
 623     if (rv != 1) {
 624         BIO_printf(bio_err, "Error loading %s from %s\n",
 625                    pcert ? "certificate" : "CRL", url);
 626         ERR_print_errors(bio_err);
 627     }
 628     return rv;
 629 }
 630 #endif
 631
 632 X509 *load_cert(const char *file, int format, const char *cert_descrip)
 633 {
 634     X509 *x = NULL;
 635     BIO *cert;
 636
 637     if (format == FORMAT_HTTP) {
 638 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 639         load_cert_crl_http(file, &x, NULL);
 640 #endif
 641         return x;
 642     }
 643
 644     if (file == NULL) {
 645         unbuffer(stdin);
 646         cert = dup_bio_in(format);
 647     } else {
 648         cert = bio_open_default(file, 'r', format);
 649     }
 650     if (cert == NULL)
 651         goto end;
 652
 653     if (format == FORMAT_ASN1) {
 654         x = d2i_X509_bio(cert, NULL);
 655     } else if (format == FORMAT_PEM) {
 656         x = PEM_read_bio_X509_AUX(cert, NULL,
 657                                   (pem_password_cb *)password_callback, NULL);
 658     } else if (format == FORMAT_PKCS12) {
 659         if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
 660             goto end;
 661     } else {
 662         BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
 663         goto end;
 664     }
 665  end:
 666     if (x == NULL) {
 667         BIO_printf(bio_err, "unable to load certificate\n");
 668         ERR_print_errors(bio_err);
 669     }
 670     BIO_free(cert);
 671     return x;
 672 }
 673
 674 X509_CRL *load_crl(const char *infile, int format)
 675 {
 676     X509_CRL *x = NULL;
 677     BIO *in = NULL;
 678
 679     if (format == FORMAT_HTTP) {
 680 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 681         load_cert_crl_http(infile, NULL, &x);
 682 #endif
 683         return x;
 684     }
 685
 686     in = bio_open_default(infile, 'r', format);
 687     if (in == NULL)
 688         goto end;
 689     if (format == FORMAT_ASN1) {
 690         x = d2i_X509_CRL_bio(in, NULL);
 691     } else if (format == FORMAT_PEM) {
 692         x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 693     } else {
 694         BIO_printf(bio_err, "bad input format specified for input crl\n");
 695         goto end;
 696     }
 697     if (x == NULL) {
 698         BIO_printf(bio_err, "unable to load CRL\n");
 699         ERR_print_errors(bio_err);
 700         goto end;
 701     }
 702
 703  end:
 704     BIO_free(in);
 705     return x;
 706 }
 707
 708 EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
 709                    const char *pass, ENGINE *e, const char *key_descrip)
 710 {
 711     BIO *key = NULL;
 712     EVP_PKEY *pkey = NULL;
 713     PW_CB_DATA cb_data;
 714
 715     cb_data.password = pass;
 716     cb_data.prompt_info = file;
 717
 718     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 719         BIO_printf(bio_err, "no keyfile specified\n");
 720         goto end;
 721     }
 722     if (format == FORMAT_ENGINE) {
 723         if (e == NULL) {
 724             BIO_printf(bio_err, "no engine specified\n");
 725         } else {
 726 #ifndef OPENSSL_NO_ENGINE
 727             if (ENGINE_init(e)) {
 728                 pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
 729                 ENGINE_finish(e);
 730             }
 731             if (pkey == NULL) {
 732                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 733                 ERR_print_errors(bio_err);
 734             }
 735 #else
 736             BIO_printf(bio_err, "engines not supported\n");
 737 #endif
 738         }
 739         goto end;
 740     }
 741     if (file == NULL && maybe_stdin) {
 742         unbuffer(stdin);
 743         key = dup_bio_in(format);
 744     } else {
 745         key = bio_open_default(file, 'r', format);
 746     }
 747     if (key == NULL)
 748         goto end;
 749     if (format == FORMAT_ASN1) {
 750         pkey = d2i_PrivateKey_bio(key, NULL);
 751     } else if (format == FORMAT_PEM) {
 752         pkey = PEM_read_bio_PrivateKey(key, NULL,
 753                                        (pem_password_cb *)password_callback,
 754                                        &cb_data);
 755     } else if (format == FORMAT_PKCS12) {
 756         if (!load_pkcs12(key, key_descrip,
 757                          (pem_password_cb *)password_callback, &cb_data,
 758                          &pkey, NULL, NULL))
 759             goto end;
 760 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
 761     } else if (format == FORMAT_MSBLOB) {
 762         pkey = b2i_PrivateKey_bio(key);
 763     } else if (format == FORMAT_PVK) {
 764         pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
 765                            &cb_data);
 766 #endif
 767     } else {
 768         BIO_printf(bio_err, "bad input format specified for key file\n");
 769         goto end;
 770     }
 771  end:
 772     BIO_free(key);
 773     if (pkey == NULL) {
 774         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 775         ERR_print_errors(bio_err);
 776     }
 777     return pkey;
 778 }
 779
 780 EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
 781                       const char *pass, ENGINE *e, const char *key_descrip)
 782 {
 783     BIO *key = NULL;
 784     EVP_PKEY *pkey = NULL;
 785     PW_CB_DATA cb_data;
 786
 787     cb_data.password = pass;
 788     cb_data.prompt_info = file;
 789
 790     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 791         BIO_printf(bio_err, "no keyfile specified\n");
 792         goto end;
 793     }
 794     if (format == FORMAT_ENGINE) {
 795         if (e == NULL) {
 796             BIO_printf(bio_err, "no engine specified\n");
 797         } else {
 798 #ifndef OPENSSL_NO_ENGINE
 799             pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
 800             if (pkey == NULL) {
 801                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 802                 ERR_print_errors(bio_err);
 803             }
 804 #else
 805             BIO_printf(bio_err, "engines not supported\n");
 806 #endif
 807         }
 808         goto end;
 809     }
 810     if (file == NULL && maybe_stdin) {
 811         unbuffer(stdin);
 812         key = dup_bio_in(format);
 813     } else {
 814         key = bio_open_default(file, 'r', format);
 815     }
 816     if (key == NULL)
 817         goto end;
 818     if (format == FORMAT_ASN1) {
 819         pkey = d2i_PUBKEY_bio(key, NULL);
 820     } else if (format == FORMAT_ASN1RSA) {
 821 #ifndef OPENSSL_NO_RSA
 822         RSA *rsa;
 823         rsa = d2i_RSAPublicKey_bio(key, NULL);
 824         if (rsa) {
 825             pkey = EVP_PKEY_new();
 826             if (pkey != NULL)
 827                 EVP_PKEY_set1_RSA(pkey, rsa);
 828             RSA_free(rsa);
 829         } else
 830 #else
 831         BIO_printf(bio_err, "RSA keys not supported\n");
 832 #endif
 833             pkey = NULL;
 834     } else if (format == FORMAT_PEMRSA) {
 835 #ifndef OPENSSL_NO_RSA
 836         RSA *rsa;
 837         rsa = PEM_read_bio_RSAPublicKey(key, NULL,
 838                                         (pem_password_cb *)password_callback,
 839                                         &cb_data);
 840         if (rsa != NULL) {
 841             pkey = EVP_PKEY_new();
 842             if (pkey != NULL)
 843                 EVP_PKEY_set1_RSA(pkey, rsa);
 844             RSA_free(rsa);
 845         } else
 846 #else
 847         BIO_printf(bio_err, "RSA keys not supported\n");
 848 #endif
 849             pkey = NULL;
 850     } else if (format == FORMAT_PEM) {
 851         pkey = PEM_read_bio_PUBKEY(key, NULL,
 852                                    (pem_password_cb *)password_callback,
 853                                    &cb_data);
 854 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
 855     } else if (format == FORMAT_MSBLOB) {
 856         pkey = b2i_PublicKey_bio(key);
 857 #endif
 858     }
 859  end:
 860     BIO_free(key);
 861     if (pkey == NULL)
 862         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 863     return pkey;
 864 }
 865
 866 static int load_certs_crls(const char *file, int format,
 867                            const char *pass, const char *desc,
 868                            STACK_OF(X509) **pcerts,
 869                            STACK_OF(X509_CRL) **pcrls)
 870 {
 871     int i;
 872     BIO *bio;
 873     STACK_OF(X509_INFO) *xis = NULL;
 874     X509_INFO *xi;
 875     PW_CB_DATA cb_data;
 876     int rv = 0;
 877
 878     cb_data.password = pass;
 879     cb_data.prompt_info = file;
 880
 881     if (format != FORMAT_PEM) {
 882         BIO_printf(bio_err, "bad input format specified for %s\n", desc);
 883         return 0;
 884     }
 885
 886     bio = bio_open_default(file, 'r', FORMAT_PEM);
 887     if (bio == NULL)
 888         return 0;
 889
 890     xis = PEM_X509_INFO_read_bio(bio, NULL,
 891                                  (pem_password_cb *)password_callback,
 892                                  &cb_data);
 893
 894     BIO_free(bio);
 895
 896     if (pcerts != NULL && *pcerts == NULL) {
 897         *pcerts = sk_X509_new_null();
 898         if (*pcerts == NULL)
 899             goto end;
 900     }
 901
 902     if (pcrls != NULL && *pcrls == NULL) {
 903         *pcrls = sk_X509_CRL_new_null();
 904         if (*pcrls == NULL)
 905             goto end;
 906     }
 907
 908     for (i = 0; i < sk_X509_INFO_num(xis); i++) {
 909         xi = sk_X509_INFO_value(xis, i);
 910         if (xi->x509 != NULL && pcerts != NULL) {
 911             if (!sk_X509_push(*pcerts, xi->x509))
 912                 goto end;
 913             xi->x509 = NULL;
 914         }
 915         if (xi->crl != NULL && pcrls != NULL) {
 916             if (!sk_X509_CRL_push(*pcrls, xi->crl))
 917                 goto end;
 918             xi->crl = NULL;
 919         }
 920     }
 921
 922     if (pcerts != NULL && sk_X509_num(*pcerts) > 0)
 923         rv = 1;
 924
 925     if (pcrls != NULL && sk_X509_CRL_num(*pcrls) > 0)
 926         rv = 1;
 927
 928  end:
 929
 930     sk_X509_INFO_pop_free(xis, X509_INFO_free);
 931
 932     if (rv == 0) {
 933         if (pcerts != NULL) {
 934             sk_X509_pop_free(*pcerts, X509_free);
 935             *pcerts = NULL;
 936         }
 937         if (pcrls != NULL) {
 938             sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
 939             *pcrls = NULL;
 940         }
 941         BIO_printf(bio_err, "unable to load %s\n",
 942                    pcerts ? "certificates" : "CRLs");
 943         ERR_print_errors(bio_err);
 944     }
 945     return rv;
 946 }
 947
 948 void* app_malloc(int sz, const char *what)
 949 {
 950     void *vp = OPENSSL_malloc(sz);
 951
 952     if (vp == NULL) {
 953         BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
 954                 opt_getprog(), sz, what);
 955         ERR_print_errors(bio_err);
 956         exit(1);
 957     }
 958     return vp;
 959 }
 960
 961 /*
 962  * Initialize or extend, if *certs != NULL, a certificate stack.
 963  */
 964 int load_certs(const char *file, STACK_OF(X509) **certs, int format,
 965                const char *pass, const char *desc)
 966 {
 967     return load_certs_crls(file, format, pass, desc, certs, NULL);
 968 }
 969
 970 /*
 971  * Initialize or extend, if *crls != NULL, a certificate stack.
 972  */
 973 int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
 974               const char *pass, const char *desc)
 975 {
 976     return load_certs_crls(file, format, pass, desc, NULL, crls);
 977 }
 978
 979 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 980 /* Return error for unknown extensions */
 981 #define X509V3_EXT_DEFAULT              0
 982 /* Print error for unknown extensions */
 983 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 984 /* ASN1 parse unknown extensions */
 985 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 986 /* BIO_dump unknown extensions */
 987 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 988
 989 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 990                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 991
 992 int set_cert_ex(unsigned long *flags, const char *arg)
 993 {
 994     static const NAME_EX_TBL cert_tbl[] = {
 995         {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
 996         {"ca_default", X509_FLAG_CA, 0xffffffffl},
 997         {"no_header", X509_FLAG_NO_HEADER, 0},
 998         {"no_version", X509_FLAG_NO_VERSION, 0},
 999         {"no_serial", X509_FLAG_NO_SERIAL, 0},
1000         {"no_signame", X509_FLAG_NO_SIGNAME, 0},
1001         {"no_validity", X509_FLAG_NO_VALIDITY, 0},
1002         {"no_subject", X509_FLAG_NO_SUBJECT, 0},
1003         {"no_issuer", X509_FLAG_NO_ISSUER, 0},
1004         {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
1005         {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
1006         {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
1007         {"no_aux", X509_FLAG_NO_AUX, 0},
1008         {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
1009         {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
1010         {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1011         {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1012         {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1013         {NULL, 0, 0}
1014     };
1015     return set_multi_opts(flags, arg, cert_tbl);
1016 }
1017
1018 int set_name_ex(unsigned long *flags, const char *arg)
1019 {
1020     static const NAME_EX_TBL ex_tbl[] = {
1021         {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1022         {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
1023         {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1024         {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1025         {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1026         {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1027         {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1028         {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1029         {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1030         {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1031         {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1032         {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1033         {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1034         {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1035         {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1036         {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1037         {"dn_rev", XN_FLAG_DN_REV, 0},
1038         {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1039         {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1040         {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1041         {"align", XN_FLAG_FN_ALIGN, 0},
1042         {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1043         {"space_eq", XN_FLAG_SPC_EQ, 0},
1044         {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1045         {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1046         {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1047         {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1048         {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1049         {NULL, 0, 0}
1050     };
1051     if (set_multi_opts(flags, arg, ex_tbl) == 0)
1052         return 0;
1053     if ((*flags & XN_FLAG_SEP_MASK) == 0)
1054         *flags |= XN_FLAG_SEP_CPLUS_SPC;
1055     return 1;
1056 }
1057
1058 int set_ext_copy(int *copy_type, const char *arg)
1059 {
1060     if (strcasecmp(arg, "none") == 0)
1061         *copy_type = EXT_COPY_NONE;
1062     else if (strcasecmp(arg, "copy") == 0)
1063         *copy_type = EXT_COPY_ADD;
1064     else if (strcasecmp(arg, "copyall") == 0)
1065         *copy_type = EXT_COPY_ALL;
1066     else
1067         return 0;
1068     return 1;
1069 }
1070
1071 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1072 {
1073     STACK_OF(X509_EXTENSION) *exts = NULL;
1074     X509_EXTENSION *ext, *tmpext;
1075     ASN1_OBJECT *obj;
1076     int i, idx, ret = 0;
1077     if (!x || !req || (copy_type == EXT_COPY_NONE))
1078         return 1;
1079     exts = X509_REQ_get_extensions(req);
1080
1081     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1082         ext = sk_X509_EXTENSION_value(exts, i);
1083         obj = X509_EXTENSION_get_object(ext);
1084         idx = X509_get_ext_by_OBJ(x, obj, -1);
1085         /* Does extension exist? */
1086         if (idx != -1) {
1087             /* If normal copy don't override existing extension */
1088             if (copy_type == EXT_COPY_ADD)
1089                 continue;
1090             /* Delete all extensions of same type */
1091             do {
1092                 tmpext = X509_get_ext(x, idx);
1093                 X509_delete_ext(x, idx);
1094                 X509_EXTENSION_free(tmpext);
1095                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1096             } while (idx != -1);
1097         }
1098         if (!X509_add_ext(x, ext, -1))
1099             goto end;
1100     }
1101
1102     ret = 1;
1103
1104  end:
1105
1106     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1107
1108     return ret;
1109 }
1110
1111 static int set_multi_opts(unsigned long *flags, const char *arg,
1112                           const NAME_EX_TBL * in_tbl)
1113 {
1114     STACK_OF(CONF_VALUE) *vals;
1115     CONF_VALUE *val;
1116     int i, ret = 1;
1117     if (!arg)
1118         return 0;
1119     vals = X509V3_parse_list(arg);
1120     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1121         val = sk_CONF_VALUE_value(vals, i);
1122         if (!set_table_opts(flags, val->name, in_tbl))
1123             ret = 0;
1124     }
1125     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1126     return ret;
1127 }
1128
1129 static int set_table_opts(unsigned long *flags, const char *arg,
1130                           const NAME_EX_TBL * in_tbl)
1131 {
1132     char c;
1133     const NAME_EX_TBL *ptbl;
1134     c = arg[0];
1135
1136     if (c == '-') {
1137         c = 0;
1138         arg++;
1139     } else if (c == '+') {
1140         c = 1;
1141         arg++;
1142     } else {
1143         c = 1;
1144     }
1145
1146     for (ptbl = in_tbl; ptbl->name; ptbl++) {
1147         if (strcasecmp(arg, ptbl->name) == 0) {
1148             *flags &= ~ptbl->mask;
1149             if (c)
1150                 *flags |= ptbl->flag;
1151             else
1152                 *flags &= ~ptbl->flag;
1153             return 1;
1154         }
1155     }
1156     return 0;
1157 }
1158
1159 void print_name(BIO *out, const char *title, X509_NAME *nm,
1160                 unsigned long lflags)
1161 {
1162     char *buf;
1163     char mline = 0;
1164     int indent = 0;
1165
1166     if (title)
1167         BIO_puts(out, title);
1168     if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1169         mline = 1;
1170         indent = 4;
1171     }
1172     if (lflags == XN_FLAG_COMPAT) {
1173         buf = X509_NAME_oneline(nm, 0, 0);
1174         BIO_puts(out, buf);
1175         BIO_puts(out, "\n");
1176         OPENSSL_free(buf);
1177     } else {
1178         if (mline)
1179             BIO_puts(out, "\n");
1180         X509_NAME_print_ex(out, nm, indent, lflags);
1181         BIO_puts(out, "\n");
1182     }
1183 }
1184
1185 void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1186                       int len, unsigned char *buffer)
1187 {
1188     BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1189     if (BN_is_zero(in)) {
1190         BIO_printf(out, "\n\t0x00");
1191     } else {
1192         int i, l;
1193
1194         l = BN_bn2bin(in, buffer);
1195         for (i = 0; i < l; i++) {
1196             if ((i % 10) == 0)
1197                 BIO_printf(out, "\n\t");
1198             if (i < l - 1)
1199                 BIO_printf(out, "0x%02X, ", buffer[i]);
1200             else
1201                 BIO_printf(out, "0x%02X", buffer[i]);
1202         }
1203     }
1204     BIO_printf(out, "\n    };\n");
1205 }
1206
1207 void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1208 {
1209     int i;
1210
1211     BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1212     for (i = 0; i < len; i++) {
1213         if ((i % 10) == 0)
1214             BIO_printf(out, "\n    ");
1215         if (i < len - 1)
1216             BIO_printf(out, "0x%02X, ", d[i]);
1217         else
1218             BIO_printf(out, "0x%02X", d[i]);
1219     }
1220     BIO_printf(out, "\n};\n");
1221 }
1222
1223 X509_STORE *setup_verify(const char *CAfile, const char *CApath, int noCAfile, int noCApath)
1224 {
1225     X509_STORE *store = X509_STORE_new();
1226     X509_LOOKUP *lookup;
1227
1228     if (store == NULL)
1229         goto end;
1230
1231     if (CAfile != NULL || !noCAfile) {
1232         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1233         if (lookup == NULL)
1234             goto end;
1235         if (CAfile) {
1236             if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1237                 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1238                 goto end;
1239             }
1240         } else {
1241             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1242         }
1243     }
1244
1245     if (CApath != NULL || !noCApath) {
1246         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1247         if (lookup == NULL)
1248             goto end;
1249         if (CApath) {
1250             if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1251                 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1252                 goto end;
1253             }
1254         } else {
1255             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1256         }
1257     }
1258
1259     ERR_clear_error();
1260     return store;
1261  end:
1262     X509_STORE_free(store);
1263     return NULL;
1264 }
1265
1266 #ifndef OPENSSL_NO_ENGINE
1267 /* Try to load an engine in a shareable library */
1268 static ENGINE *try_load_engine(const char *engine)
1269 {
1270     ENGINE *e = ENGINE_by_id("dynamic");
1271     if (e) {
1272         if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1273             || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1274             ENGINE_free(e);
1275             e = NULL;
1276         }
1277     }
1278     return e;
1279 }
1280 #endif
1281
1282 ENGINE *setup_engine(const char *engine, int debug)
1283 {
1284     ENGINE *e = NULL;
1285
1286 #ifndef OPENSSL_NO_ENGINE
1287     if (engine != NULL) {
1288         if (strcmp(engine, "auto") == 0) {
1289             BIO_printf(bio_err, "enabling auto ENGINE support\n");
1290             ENGINE_register_all_complete();
1291             return NULL;
1292         }
1293         if ((e = ENGINE_by_id(engine)) == NULL
1294             && (e = try_load_engine(engine)) == NULL) {
1295             BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1296             ERR_print_errors(bio_err);
1297             return NULL;
1298         }
1299         if (debug) {
1300             ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1301         }
1302         ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1303         if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1304             BIO_printf(bio_err, "can't use that engine\n");
1305             ERR_print_errors(bio_err);
1306             ENGINE_free(e);
1307             return NULL;
1308         }
1309
1310         BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1311     }
1312 #endif
1313     return e;
1314 }
1315
1316 void release_engine(ENGINE *e)
1317 {
1318 #ifndef OPENSSL_NO_ENGINE
1319     if (e != NULL)
1320         /* Free our "structural" reference. */
1321         ENGINE_free(e);
1322 #endif
1323 }
1324
1325 static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1326 {
1327     const char *n;
1328
1329     n = a[DB_serial];
1330     while (*n == '0')
1331         n++;
1332     return OPENSSL_LH_strhash(n);
1333 }
1334
1335 static int index_serial_cmp(const OPENSSL_CSTRING *a,
1336                             const OPENSSL_CSTRING *b)
1337 {
1338     const char *aa, *bb;
1339
1340     for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1341     for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1342     return strcmp(aa, bb);
1343 }
1344
1345 static int index_name_qual(char **a)
1346 {
1347     return (a[0][0] == 'V');
1348 }
1349
1350 static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1351 {
1352     return OPENSSL_LH_strhash(a[DB_name]);
1353 }
1354
1355 int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1356 {
1357     return strcmp(a[DB_name], b[DB_name]);
1358 }
1359
1360 static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1361 static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1362 static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1363 static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1364 #undef BSIZE
1365 #define BSIZE 256
1366 BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai)
1367 {
1368     BIO *in = NULL;
1369     BIGNUM *ret = NULL;
1370     char buf[1024];
1371     ASN1_INTEGER *ai = NULL;
1372
1373     ai = ASN1_INTEGER_new();
1374     if (ai == NULL)
1375         goto err;
1376
1377     in = BIO_new_file(serialfile, "r");
1378     if (in == NULL) {
1379         if (!create) {
1380             perror(serialfile);
1381             goto err;
1382         }
1383         ERR_clear_error();
1384         ret = BN_new();
1385         if (ret == NULL || !rand_serial(ret, ai))
1386             BIO_printf(bio_err, "Out of memory\n");
1387     } else {
1388         if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1389             BIO_printf(bio_err, "unable to load number from %s\n",
1390                        serialfile);
1391             goto err;
1392         }
1393         ret = ASN1_INTEGER_to_BN(ai, NULL);
1394         if (ret == NULL) {
1395             BIO_printf(bio_err,
1396                        "error converting number from bin to BIGNUM\n");
1397             goto err;
1398         }
1399     }
1400
1401     if (ret && retai) {
1402         *retai = ai;
1403         ai = NULL;
1404     }
1405  err:
1406     BIO_free(in);
1407     ASN1_INTEGER_free(ai);
1408     return ret;
1409 }
1410
1411 int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1412                 ASN1_INTEGER **retai)
1413 {
1414     char buf[1][BSIZE];
1415     BIO *out = NULL;
1416     int ret = 0;
1417     ASN1_INTEGER *ai = NULL;
1418     int j;
1419
1420     if (suffix == NULL)
1421         j = strlen(serialfile);
1422     else
1423         j = strlen(serialfile) + strlen(suffix) + 1;
1424     if (j >= BSIZE) {
1425         BIO_printf(bio_err, "file name too long\n");
1426         goto err;
1427     }
1428
1429     if (suffix == NULL)
1430         OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1431     else {
1432 #ifndef OPENSSL_SYS_VMS
1433         j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, suffix);
1434 #else
1435         j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, suffix);
1436 #endif
1437     }
1438     out = BIO_new_file(buf[0], "w");
1439     if (out == NULL) {
1440         ERR_print_errors(bio_err);
1441         goto err;
1442     }
1443
1444     if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1445         BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1446         goto err;
1447     }
1448     i2a_ASN1_INTEGER(out, ai);
1449     BIO_puts(out, "\n");
1450     ret = 1;
1451     if (retai) {
1452         *retai = ai;
1453         ai = NULL;
1454     }
1455  err:
1456     BIO_free_all(out);
1457     ASN1_INTEGER_free(ai);
1458     return ret;
1459 }
1460
1461 int rotate_serial(const char *serialfile, const char *new_suffix,
1462                   const char *old_suffix)
1463 {
1464     char buf[2][BSIZE];
1465     int i, j;
1466
1467     i = strlen(serialfile) + strlen(old_suffix);
1468     j = strlen(serialfile) + strlen(new_suffix);
1469     if (i > j)
1470         j = i;
1471     if (j + 1 >= BSIZE) {
1472         BIO_printf(bio_err, "file name too long\n");
1473         goto err;
1474     }
1475 #ifndef OPENSSL_SYS_VMS
1476     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, new_suffix);
1477     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", serialfile, old_suffix);
1478 #else
1479     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, new_suffix);
1480     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", serialfile, old_suffix);
1481 #endif
1482     if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1483 #ifdef ENOTDIR
1484         && errno != ENOTDIR
1485 #endif
1486         ) {
1487         BIO_printf(bio_err,
1488                    "unable to rename %s to %s\n", serialfile, buf[1]);
1489         perror("reason");
1490         goto err;
1491     }
1492     if (rename(buf[0], serialfile) < 0) {
1493         BIO_printf(bio_err,
1494                    "unable to rename %s to %s\n", buf[0], serialfile);
1495         perror("reason");
1496         rename(buf[1], serialfile);
1497         goto err;
1498     }
1499     return 1;
1500  err:
1501     return 0;
1502 }
1503
1504 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1505 {
1506     BIGNUM *btmp;
1507     int ret = 0;
1508
1509     btmp = b == NULL ? BN_new() : b;
1510     if (btmp == NULL)
1511         return 0;
1512
1513     if (!BN_rand(btmp, SERIAL_RAND_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
1514         goto error;
1515     if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1516         goto error;
1517
1518     ret = 1;
1519
1520  error:
1521
1522     if (btmp != b)
1523         BN_free(btmp);
1524
1525     return ret;
1526 }
1527
1528 CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1529 {
1530     CA_DB *retdb = NULL;
1531     TXT_DB *tmpdb = NULL;
1532     BIO *in;
1533     CONF *dbattr_conf = NULL;
1534     char buf[BSIZE];
1535
1536     in = BIO_new_file(dbfile, "r");
1537     if (in == NULL) {
1538         ERR_print_errors(bio_err);
1539         goto err;
1540     }
1541     if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1542         goto err;
1543
1544 #ifndef OPENSSL_SYS_VMS
1545     BIO_snprintf(buf, sizeof(buf), "%s.attr", dbfile);
1546 #else
1547     BIO_snprintf(buf, sizeof(buf), "%s-attr", dbfile);
1548 #endif
1549     dbattr_conf = app_load_config(buf);
1550
1551     retdb = app_malloc(sizeof(*retdb), "new DB");
1552     retdb->db = tmpdb;
1553     tmpdb = NULL;
1554     if (db_attr)
1555         retdb->attributes = *db_attr;
1556     else {
1557         retdb->attributes.unique_subject = 1;
1558     }
1559
1560     if (dbattr_conf) {
1561         char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1562         if (p) {
1563             retdb->attributes.unique_subject = parse_yesno(p, 1);
1564         }
1565     }
1566
1567  err:
1568     NCONF_free(dbattr_conf);
1569     TXT_DB_free(tmpdb);
1570     BIO_free_all(in);
1571     return retdb;
1572 }
1573
1574 int index_index(CA_DB *db)
1575 {
1576     if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1577                              LHASH_HASH_FN(index_serial),
1578                              LHASH_COMP_FN(index_serial))) {
1579         BIO_printf(bio_err,
1580                    "error creating serial number index:(%ld,%ld,%ld)\n",
1581                    db->db->error, db->db->arg1, db->db->arg2);
1582         return 0;
1583     }
1584
1585     if (db->attributes.unique_subject
1586         && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1587                                 LHASH_HASH_FN(index_name),
1588                                 LHASH_COMP_FN(index_name))) {
1589         BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1590                    db->db->error, db->db->arg1, db->db->arg2);
1591         return 0;
1592     }
1593     return 1;
1594 }
1595
1596 int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1597 {
1598     char buf[3][BSIZE];
1599     BIO *out;
1600     int j;
1601
1602     j = strlen(dbfile) + strlen(suffix);
1603     if (j + 6 >= BSIZE) {
1604         BIO_printf(bio_err, "file name too long\n");
1605         goto err;
1606     }
1607 #ifndef OPENSSL_SYS_VMS
1608     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr", dbfile);
1609     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.attr.%s", dbfile, suffix);
1610     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, suffix);
1611 #else
1612     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr", dbfile);
1613     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-attr-%s", dbfile, suffix);
1614     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, suffix);
1615 #endif
1616     out = BIO_new_file(buf[0], "w");
1617     if (out == NULL) {
1618         perror(dbfile);
1619         BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1620         goto err;
1621     }
1622     j = TXT_DB_write(out, db->db);
1623     BIO_free(out);
1624     if (j <= 0)
1625         goto err;
1626
1627     out = BIO_new_file(buf[1], "w");
1628     if (out == NULL) {
1629         perror(buf[2]);
1630         BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1631         goto err;
1632     }
1633     BIO_printf(out, "unique_subject = %s\n",
1634                db->attributes.unique_subject ? "yes" : "no");
1635     BIO_free(out);
1636
1637     return 1;
1638  err:
1639     return 0;
1640 }
1641
1642 int rotate_index(const char *dbfile, const char *new_suffix,
1643                  const char *old_suffix)
1644 {
1645     char buf[5][BSIZE];
1646     int i, j;
1647
1648     i = strlen(dbfile) + strlen(old_suffix);
1649     j = strlen(dbfile) + strlen(new_suffix);
1650     if (i > j)
1651         j = i;
1652     if (j + 6 >= BSIZE) {
1653         BIO_printf(bio_err, "file name too long\n");
1654         goto err;
1655     }
1656 #ifndef OPENSSL_SYS_VMS
1657     j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s.attr", dbfile);
1658     j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s.attr.%s", dbfile, old_suffix);
1659     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr.%s", dbfile, new_suffix);
1660     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", dbfile, old_suffix);
1661     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, new_suffix);
1662 #else
1663     j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s-attr", dbfile);
1664     j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s-attr-%s", dbfile, old_suffix);
1665     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr-%s", dbfile, new_suffix);
1666     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", dbfile, old_suffix);
1667     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, new_suffix);
1668 #endif
1669     if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1670 #ifdef ENOTDIR
1671         && errno != ENOTDIR
1672 #endif
1673         ) {
1674         BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1675         perror("reason");
1676         goto err;
1677     }
1678     if (rename(buf[0], dbfile) < 0) {
1679         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1680         perror("reason");
1681         rename(buf[1], dbfile);
1682         goto err;
1683     }
1684     if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1685 #ifdef ENOTDIR
1686         && errno != ENOTDIR
1687 #endif
1688         ) {
1689         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1690         perror("reason");
1691         rename(dbfile, buf[0]);
1692         rename(buf[1], dbfile);
1693         goto err;
1694     }
1695     if (rename(buf[2], buf[4]) < 0) {
1696         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1697         perror("reason");
1698         rename(buf[3], buf[4]);
1699         rename(dbfile, buf[0]);
1700         rename(buf[1], dbfile);
1701         goto err;
1702     }
1703     return 1;
1704  err:
1705     return 0;
1706 }
1707
1708 void free_index(CA_DB *db)
1709 {
1710     if (db) {
1711         TXT_DB_free(db->db);
1712         OPENSSL_free(db);
1713     }
1714 }
1715
1716 int parse_yesno(const char *str, int def)
1717 {
1718     if (str) {
1719         switch (*str) {
1720         case 'f':              /* false */
1721         case 'F':              /* FALSE */
1722         case 'n':              /* no */
1723         case 'N':              /* NO */
1724         case '0':              /* 0 */
1725             return 0;
1726         case 't':              /* true */
1727         case 'T':              /* TRUE */
1728         case 'y':              /* yes */
1729         case 'Y':              /* YES */
1730         case '1':              /* 1 */
1731             return 1;
1732         }
1733     }
1734     return def;
1735 }
1736
1737 /*
1738  * name is expected to be in the format /type0=value0/type1=value1/type2=...
1739  * where characters may be escaped by \
1740  */
1741 X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1742 {
1743     int nextismulti = 0;
1744     char *work;
1745     X509_NAME *n;
1746
1747     if (*cp++ != '/')
1748         return NULL;
1749
1750     n = X509_NAME_new();
1751     if (n == NULL)
1752         return NULL;
1753     work = OPENSSL_strdup(cp);
1754     if (work == NULL)
1755         goto err;
1756
1757     while (*cp) {
1758         char *bp = work;
1759         char *typestr = bp;
1760         unsigned char *valstr;
1761         int nid;
1762         int ismulti = nextismulti;
1763         nextismulti = 0;
1764
1765         /* Collect the type */
1766         while (*cp && *cp != '=')
1767             *bp++ = *cp++;
1768         if (*cp == '\0') {
1769             BIO_printf(bio_err,
1770                     "%s: Hit end of string before finding the equals.\n",
1771                     opt_getprog());
1772             goto err;
1773         }
1774         *bp++ = '\0';
1775         ++cp;
1776
1777         /* Collect the value. */
1778         valstr = (unsigned char *)bp;
1779         for (; *cp && *cp != '/'; *bp++ = *cp++) {
1780             if (canmulti && *cp == '+') {
1781                 nextismulti = 1;
1782                 break;
1783             }
1784             if (*cp == '\\' && *++cp == '\0') {
1785                 BIO_printf(bio_err,
1786                         "%s: escape character at end of string\n",
1787                         opt_getprog());
1788                 goto err;
1789             }
1790         }
1791         *bp++ = '\0';
1792
1793         /* If not at EOS (must be + or /), move forward. */
1794         if (*cp)
1795             ++cp;
1796
1797         /* Parse */
1798         nid = OBJ_txt2nid(typestr);
1799         if (nid == NID_undef) {
1800             BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1801                       opt_getprog(), typestr);
1802             continue;
1803         }
1804         if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1805                                         valstr, strlen((char *)valstr),
1806                                         -1, ismulti ? -1 : 0))
1807             goto err;
1808     }
1809
1810     OPENSSL_free(work);
1811     return n;
1812
1813  err:
1814     X509_NAME_free(n);
1815     OPENSSL_free(work);
1816     return NULL;
1817 }
1818
1819 /*
1820  * Read whole contents of a BIO into an allocated memory buffer and return
1821  * it.
1822  */
1823
1824 int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1825 {
1826     BIO *mem;
1827     int len, ret;
1828     unsigned char tbuf[1024];
1829
1830     mem = BIO_new(BIO_s_mem());
1831     if (mem == NULL)
1832         return -1;
1833     for (;;) {
1834         if ((maxlen != -1) && maxlen < 1024)
1835             len = maxlen;
1836         else
1837             len = 1024;
1838         len = BIO_read(in, tbuf, len);
1839         if (len < 0) {
1840             BIO_free(mem);
1841             return -1;
1842         }
1843         if (len == 0)
1844             break;
1845         if (BIO_write(mem, tbuf, len) != len) {
1846             BIO_free(mem);
1847             return -1;
1848         }
1849         maxlen -= len;
1850
1851         if (maxlen == 0)
1852             break;
1853     }
1854     ret = BIO_get_mem_data(mem, (char **)out);
1855     BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1856     BIO_free(mem);
1857     return ret;
1858 }
1859
1860 int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1861 {
1862     int rv;
1863     char *stmp, *vtmp = NULL;
1864     stmp = OPENSSL_strdup(value);
1865     if (!stmp)
1866         return -1;
1867     vtmp = strchr(stmp, ':');
1868     if (vtmp) {
1869         *vtmp = 0;
1870         vtmp++;
1871     }
1872     rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1873     OPENSSL_free(stmp);
1874     return rv;
1875 }
1876
1877 static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1878 {
1879     X509_POLICY_NODE *node;
1880     int i;
1881
1882     BIO_printf(bio_err, "%s Policies:", name);
1883     if (nodes) {
1884         BIO_puts(bio_err, "\n");
1885         for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1886             node = sk_X509_POLICY_NODE_value(nodes, i);
1887             X509_POLICY_NODE_print(bio_err, node, 2);
1888         }
1889     } else {
1890         BIO_puts(bio_err, " <empty>\n");
1891     }
1892 }
1893
1894 void policies_print(X509_STORE_CTX *ctx)
1895 {
1896     X509_POLICY_TREE *tree;
1897     int explicit_policy;
1898     tree = X509_STORE_CTX_get0_policy_tree(ctx);
1899     explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1900
1901     BIO_printf(bio_err, "Require explicit Policy: %s\n",
1902                explicit_policy ? "True" : "False");
1903
1904     nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1905     nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1906 }
1907
1908 /*-
1909  * next_protos_parse parses a comma separated list of strings into a string
1910  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1911  *   outlen: (output) set to the length of the resulting buffer on success.
1912  *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1913  *   in: a NUL terminated string like "abc,def,ghi"
1914  *
1915  *   returns: a malloc'd buffer or NULL on failure.
1916  */
1917 unsigned char *next_protos_parse(size_t *outlen, const char *in)
1918 {
1919     size_t len;
1920     unsigned char *out;
1921     size_t i, start = 0;
1922
1923     len = strlen(in);
1924     if (len >= 65535)
1925         return NULL;
1926
1927     out = app_malloc(strlen(in) + 1, "NPN buffer");
1928     for (i = 0; i <= len; ++i) {
1929         if (i == len || in[i] == ',') {
1930             if (i - start > 255) {
1931                 OPENSSL_free(out);
1932                 return NULL;
1933             }
1934             out[start] = (unsigned char)(i - start);
1935             start = i + 1;
1936         } else {
1937             out[i + 1] = in[i];
1938         }
1939     }
1940
1941     *outlen = len + 1;
1942     return out;
1943 }
1944
1945 void print_cert_checks(BIO *bio, X509 *x,
1946                        const char *checkhost,
1947                        const char *checkemail, const char *checkip)
1948 {
1949     if (x == NULL)
1950         return;
1951     if (checkhost) {
1952         BIO_printf(bio, "Hostname %s does%s match certificate\n",
1953                    checkhost,
1954                    X509_check_host(x, checkhost, 0, 0, NULL) == 1
1955                        ? "" : " NOT");
1956     }
1957
1958     if (checkemail) {
1959         BIO_printf(bio, "Email %s does%s match certificate\n",
1960                    checkemail, X509_check_email(x, checkemail, 0, 0)
1961                    ? "" : " NOT");
1962     }
1963
1964     if (checkip) {
1965         BIO_printf(bio, "IP %s does%s match certificate\n",
1966                    checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
1967     }
1968 }
1969
1970 /* Get first http URL from a DIST_POINT structure */
1971
1972 static const char *get_dp_url(DIST_POINT *dp)
1973 {
1974     GENERAL_NAMES *gens;
1975     GENERAL_NAME *gen;
1976     int i, gtype;
1977     ASN1_STRING *uri;
1978     if (!dp->distpoint || dp->distpoint->type != 0)
1979         return NULL;
1980     gens = dp->distpoint->name.fullname;
1981     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
1982         gen = sk_GENERAL_NAME_value(gens, i);
1983         uri = GENERAL_NAME_get0_value(gen, &gtype);
1984         if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
1985             const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
1986             if (strncmp(uptr, "http://", 7) == 0)
1987                 return uptr;
1988         }
1989     }
1990     return NULL;
1991 }
1992
1993 /*
1994  * Look through a CRLDP structure and attempt to find an http URL to
1995  * downloads a CRL from.
1996  */
1997
1998 static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
1999 {
2000     int i;
2001     const char *urlptr = NULL;
2002     for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
2003         DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
2004         urlptr = get_dp_url(dp);
2005         if (urlptr)
2006             return load_crl(urlptr, FORMAT_HTTP);
2007     }
2008     return NULL;
2009 }
2010
2011 /*
2012  * Example of downloading CRLs from CRLDP: not usable for real world as it
2013  * always downloads, doesn't support non-blocking I/O and doesn't cache
2014  * anything.
2015  */
2016
2017 static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
2018 {
2019     X509 *x;
2020     STACK_OF(X509_CRL) *crls = NULL;
2021     X509_CRL *crl;
2022     STACK_OF(DIST_POINT) *crldp;
2023
2024     crls = sk_X509_CRL_new_null();
2025     if (!crls)
2026         return NULL;
2027     x = X509_STORE_CTX_get_current_cert(ctx);
2028     crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
2029     crl = load_crl_crldp(crldp);
2030     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2031     if (!crl) {
2032         sk_X509_CRL_free(crls);
2033         return NULL;
2034     }
2035     sk_X509_CRL_push(crls, crl);
2036     /* Try to download delta CRL */
2037     crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
2038     crl = load_crl_crldp(crldp);
2039     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2040     if (crl)
2041         sk_X509_CRL_push(crls, crl);
2042     return crls;
2043 }
2044
2045 void store_setup_crl_download(X509_STORE *st)
2046 {
2047     X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2048 }
2049
2050 /*
2051  * Platform-specific sections
2052  */
2053 #if defined(_WIN32)
2054 # ifdef fileno
2055 #  undef fileno
2056 #  define fileno(a) (int)_fileno(a)
2057 # endif
2058
2059 # include <windows.h>
2060 # include <tchar.h>
2061
2062 static int WIN32_rename(const char *from, const char *to)
2063 {
2064     TCHAR *tfrom = NULL, *tto;
2065     DWORD err;
2066     int ret = 0;
2067
2068     if (sizeof(TCHAR) == 1) {
2069         tfrom = (TCHAR *)from;
2070         tto = (TCHAR *)to;
2071     } else {                    /* UNICODE path */
2072
2073         size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2074         tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2075         if (tfrom == NULL)
2076             goto err;
2077         tto = tfrom + flen;
2078 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2079         if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2080 # endif
2081             for (i = 0; i < flen; i++)
2082                 tfrom[i] = (TCHAR)from[i];
2083 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2084         if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2085 # endif
2086             for (i = 0; i < tlen; i++)
2087                 tto[i] = (TCHAR)to[i];
2088     }
2089
2090     if (MoveFile(tfrom, tto))
2091         goto ok;
2092     err = GetLastError();
2093     if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2094         if (DeleteFile(tto) && MoveFile(tfrom, tto))
2095             goto ok;
2096         err = GetLastError();
2097     }
2098     if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2099         errno = ENOENT;
2100     else if (err == ERROR_ACCESS_DENIED)
2101         errno = EACCES;
2102     else
2103         errno = EINVAL;         /* we could map more codes... */
2104  err:
2105     ret = -1;
2106  ok:
2107     if (tfrom != NULL && tfrom != (TCHAR *)from)
2108         free(tfrom);
2109     return ret;
2110 }
2111 #endif
2112
2113 /* app_tminterval section */
2114 #if defined(_WIN32)
2115 double app_tminterval(int stop, int usertime)
2116 {
2117     FILETIME now;
2118     double ret = 0;
2119     static ULARGE_INTEGER tmstart;
2120     static int warning = 1;
2121 # ifdef _WIN32_WINNT
2122     static HANDLE proc = NULL;
2123
2124     if (proc == NULL) {
2125         if (check_winnt())
2126             proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2127                                GetCurrentProcessId());
2128         if (proc == NULL)
2129             proc = (HANDLE) - 1;
2130     }
2131
2132     if (usertime && proc != (HANDLE) - 1) {
2133         FILETIME junk;
2134         GetProcessTimes(proc, &junk, &junk, &junk, &now);
2135     } else
2136 # endif
2137     {
2138         SYSTEMTIME systime;
2139
2140         if (usertime && warning) {
2141             BIO_printf(bio_err, "To get meaningful results, run "
2142                        "this program on idle system.\n");
2143             warning = 0;
2144         }
2145         GetSystemTime(&systime);
2146         SystemTimeToFileTime(&systime, &now);
2147     }
2148
2149     if (stop == TM_START) {
2150         tmstart.u.LowPart = now.dwLowDateTime;
2151         tmstart.u.HighPart = now.dwHighDateTime;
2152     } else {
2153         ULARGE_INTEGER tmstop;
2154
2155         tmstop.u.LowPart = now.dwLowDateTime;
2156         tmstop.u.HighPart = now.dwHighDateTime;
2157
2158         ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2159     }
2160
2161     return ret;
2162 }
2163 #elif defined(OPENSSL_SYSTEM_VXWORKS)
2164 # include <time.h>
2165
2166 double app_tminterval(int stop, int usertime)
2167 {
2168     double ret = 0;
2169 # ifdef CLOCK_REALTIME
2170     static struct timespec tmstart;
2171     struct timespec now;
2172 # else
2173     static unsigned long tmstart;
2174     unsigned long now;
2175 # endif
2176     static int warning = 1;
2177
2178     if (usertime && warning) {
2179         BIO_printf(bio_err, "To get meaningful results, run "
2180                    "this program on idle system.\n");
2181         warning = 0;
2182     }
2183 # ifdef CLOCK_REALTIME
2184     clock_gettime(CLOCK_REALTIME, &now);
2185     if (stop == TM_START)
2186         tmstart = now;
2187     else
2188         ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2189                - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2190 # else
2191     now = tickGet();
2192     if (stop == TM_START)
2193         tmstart = now;
2194     else
2195         ret = (now - tmstart) / (double)sysClkRateGet();
2196 # endif
2197     return ret;
2198 }
2199
2200 #elif defined(OPENSSL_SYSTEM_VMS)
2201 # include <time.h>
2202 # include <times.h>
2203
2204 double app_tminterval(int stop, int usertime)
2205 {
2206     static clock_t tmstart;
2207     double ret = 0;
2208     clock_t now;
2209 # ifdef __TMS
2210     struct tms rus;
2211
2212     now = times(&rus);
2213     if (usertime)
2214         now = rus.tms_utime;
2215 # else
2216     if (usertime)
2217         now = clock();          /* sum of user and kernel times */
2218     else {
2219         struct timeval tv;
2220         gettimeofday(&tv, NULL);
2221         now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2222                         (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2223             );
2224     }
2225 # endif
2226     if (stop == TM_START)
2227         tmstart = now;
2228     else
2229         ret = (now - tmstart) / (double)(CLK_TCK);
2230
2231     return ret;
2232 }
2233
2234 #elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2235 # include <sys/times.h>
2236
2237 double app_tminterval(int stop, int usertime)
2238 {
2239     double ret = 0;
2240     struct tms rus;
2241     clock_t now = times(&rus);
2242     static clock_t tmstart;
2243
2244     if (usertime)
2245         now = rus.tms_utime;
2246
2247     if (stop == TM_START) {
2248         tmstart = now;
2249     } else {
2250         long int tck = sysconf(_SC_CLK_TCK);
2251         ret = (now - tmstart) / (double)tck;
2252     }
2253
2254     return ret;
2255 }
2256
2257 #else
2258 # include <sys/time.h>
2259 # include <sys/resource.h>
2260
2261 double app_tminterval(int stop, int usertime)
2262 {
2263     double ret = 0;
2264     struct rusage rus;
2265     struct timeval now;
2266     static struct timeval tmstart;
2267
2268     if (usertime)
2269         getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2270     else
2271         gettimeofday(&now, NULL);
2272
2273     if (stop == TM_START)
2274         tmstart = now;
2275     else
2276         ret = ((now.tv_sec + now.tv_usec * 1e-6)
2277                - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2278
2279     return ret;
2280 }
2281 #endif
2282
2283 int app_access(const char* name, int flag)
2284 {
2285 #ifdef _WIN32
2286     return _access(name, flag);
2287 #else
2288     return access(name, flag);
2289 #endif
2290 }
2291
2292 /* app_isdir section */
2293 #ifdef _WIN32
2294 int app_isdir(const char *name)
2295 {
2296     DWORD attr;
2297 # if defined(UNICODE) || defined(_UNICODE)
2298     size_t i, len_0 = strlen(name) + 1;
2299     WCHAR tempname[MAX_PATH];
2300
2301     if (len_0 > MAX_PATH)
2302         return -1;
2303
2304 #  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2305     if (!MultiByteToWideChar(CP_ACP, 0, name, len_0, tempname, MAX_PATH))
2306 #  endif
2307         for (i = 0; i < len_0; i++)
2308             tempname[i] = (WCHAR)name[i];
2309
2310     attr = GetFileAttributes(tempname);
2311 # else
2312     attr = GetFileAttributes(name);
2313 # endif
2314     if (attr == INVALID_FILE_ATTRIBUTES)
2315         return -1;
2316     return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0);
2317 }
2318 #else
2319 # include <sys/stat.h>
2320 # ifndef S_ISDIR
2321 #  if defined(_S_IFMT) && defined(_S_IFDIR)
2322 #   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2323 #  else
2324 #   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2325 #  endif
2326 # endif
2327
2328 int app_isdir(const char *name)
2329 {
2330 # if defined(S_ISDIR)
2331     struct stat st;
2332
2333     if (stat(name, &st) == 0)
2334         return S_ISDIR(st.st_mode);
2335     else
2336         return -1;
2337 # else
2338     return -1;
2339 # endif
2340 }
2341 #endif
2342
2343 /* raw_read|write section */
2344 #if defined(__VMS)
2345 # include "vms_term_sock.h"
2346 static int stdin_sock = -1;
2347
2348 static void close_stdin_sock(void)
2349 {
2350     TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2351 }
2352
2353 int fileno_stdin(void)
2354 {
2355     if (stdin_sock == -1) {
2356         TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2357         atexit(close_stdin_sock);
2358     }
2359
2360     return stdin_sock;
2361 }
2362 #else
2363 int fileno_stdin(void)
2364 {
2365     return fileno(stdin);
2366 }
2367 #endif
2368
2369 int fileno_stdout(void)
2370 {
2371     return fileno(stdout);
2372 }
2373
2374 #if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2375 int raw_read_stdin(void *buf, int siz)
2376 {
2377     DWORD n;
2378     if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2379         return n;
2380     else
2381         return -1;
2382 }
2383 #elif defined(__VMS)
2384 # include <sys/socket.h>
2385
2386 int raw_read_stdin(void *buf, int siz)
2387 {
2388     return recv(fileno_stdin(), buf, siz, 0);
2389 }
2390 #else
2391 int raw_read_stdin(void *buf, int siz)
2392 {
2393     return read(fileno_stdin(), buf, siz);
2394 }
2395 #endif
2396
2397 #if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2398 int raw_write_stdout(const void *buf, int siz)
2399 {
2400     DWORD n;
2401     if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2402         return n;
2403     else
2404         return -1;
2405 }
2406 #else
2407 int raw_write_stdout(const void *buf, int siz)
2408 {
2409     return write(fileno_stdout(), buf, siz);
2410 }
2411 #endif
2412
2413 /*
2414  * Centralized handling if input and output files with format specification
2415  * The format is meant to show what the input and output is supposed to be,
2416  * and is therefore a show of intent more than anything else.  However, it
2417  * does impact behavior on some platform, such as differentiating between
2418  * text and binary input/output on non-Unix platforms
2419  */
2420 static int istext(int format)
2421 {
2422     return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2423 }
2424
2425 BIO *dup_bio_in(int format)
2426 {
2427     return BIO_new_fp(stdin,
2428                       BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2429 }
2430
2431 BIO *dup_bio_out(int format)
2432 {
2433     BIO *b = BIO_new_fp(stdout,
2434                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2435 #ifdef OPENSSL_SYS_VMS
2436     if (istext(format))
2437         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2438 #endif
2439     return b;
2440 }
2441
2442 BIO *dup_bio_err(int format)
2443 {
2444     BIO *b = BIO_new_fp(stderr,
2445                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2446 #ifdef OPENSSL_SYS_VMS
2447     if (istext(format))
2448         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2449 #endif
2450     return b;
2451 }
2452
2453 void unbuffer(FILE *fp)
2454 {
2455 /*
2456  * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2457  * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2458  * However, we trust that the C RTL will never give us a FILE pointer
2459  * above the first 4 GB of memory, so we simply turn off the warning
2460  * temporarily.
2461  */
2462 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2463 # pragma environment save
2464 # pragma message disable maylosedata2
2465 #endif
2466     setbuf(fp, NULL);
2467 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2468 # pragma environment restore
2469 #endif
2470 }
2471
2472 static const char *modestr(char mode, int format)
2473 {
2474     OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2475
2476     switch (mode) {
2477     case 'a':
2478         return istext(format) ? "a" : "ab";
2479     case 'r':
2480         return istext(format) ? "r" : "rb";
2481     case 'w':
2482         return istext(format) ? "w" : "wb";
2483     }
2484     /* The assert above should make sure we never reach this point */
2485     return NULL;
2486 }
2487
2488 static const char *modeverb(char mode)
2489 {
2490     switch (mode) {
2491     case 'a':
2492         return "appending";
2493     case 'r':
2494         return "reading";
2495     case 'w':
2496         return "writing";
2497     }
2498     return "(doing something)";
2499 }
2500
2501 /*
2502  * Open a file for writing, owner-read-only.
2503  */
2504 BIO *bio_open_owner(const char *filename, int format, int private)
2505 {
2506     FILE *fp = NULL;
2507     BIO *b = NULL;
2508     int fd = -1, bflags, mode, textmode;
2509
2510     if (!private || filename == NULL || strcmp(filename, "-") == 0)
2511         return bio_open_default(filename, 'w', format);
2512
2513     mode = O_WRONLY;
2514 #ifdef O_CREAT
2515     mode |= O_CREAT;
2516 #endif
2517 #ifdef O_TRUNC
2518     mode |= O_TRUNC;
2519 #endif
2520     textmode = istext(format);
2521     if (!textmode) {
2522 #ifdef O_BINARY
2523         mode |= O_BINARY;
2524 #elif defined(_O_BINARY)
2525         mode |= _O_BINARY;
2526 #endif
2527     }
2528
2529 #ifdef OPENSSL_SYS_VMS
2530     /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2531      * it still needs to know that we're going binary, or fdopen()
2532      * will fail with "invalid argument"...  so we tell VMS what the
2533      * context is.
2534      */
2535     if (!textmode)
2536         fd = open(filename, mode, 0600, "ctx=bin");
2537     else
2538 #endif
2539         fd = open(filename, mode, 0600);
2540     if (fd < 0)
2541         goto err;
2542     fp = fdopen(fd, modestr('w', format));
2543     if (fp == NULL)
2544         goto err;
2545     bflags = BIO_CLOSE;
2546     if (textmode)
2547         bflags |= BIO_FP_TEXT;
2548     b = BIO_new_fp(fp, bflags);
2549     if (b)
2550         return b;
2551
2552  err:
2553     BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2554                opt_getprog(), filename, strerror(errno));
2555     ERR_print_errors(bio_err);
2556     /* If we have fp, then fdopen took over fd, so don't close both. */
2557     if (fp)
2558         fclose(fp);
2559     else if (fd >= 0)
2560         close(fd);
2561     return NULL;
2562 }
2563
2564 static BIO *bio_open_default_(const char *filename, char mode, int format,
2565                               int quiet)
2566 {
2567     BIO *ret;
2568
2569     if (filename == NULL || strcmp(filename, "-") == 0) {
2570         ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2571         if (quiet) {
2572             ERR_clear_error();
2573             return ret;
2574         }
2575         if (ret != NULL)
2576             return ret;
2577         BIO_printf(bio_err,
2578                    "Can't open %s, %s\n",
2579                    mode == 'r' ? "stdin" : "stdout", strerror(errno));
2580     } else {
2581         ret = BIO_new_file(filename, modestr(mode, format));
2582         if (quiet) {
2583             ERR_clear_error();
2584             return ret;
2585         }
2586         if (ret != NULL)
2587             return ret;
2588         BIO_printf(bio_err,
2589                    "Can't open %s for %s, %s\n",
2590                    filename, modeverb(mode), strerror(errno));
2591     }
2592     ERR_print_errors(bio_err);
2593     return NULL;
2594 }
2595
2596 BIO *bio_open_default(const char *filename, char mode, int format)
2597 {
2598     return bio_open_default_(filename, mode, format, 0);
2599 }
2600
2601 BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2602 {
2603     return bio_open_default_(filename, mode, format, 1);
2604 }
2605
2606 void wait_for_async(SSL *s)
2607 {
2608     /* On Windows select only works for sockets, so we simply don't wait  */
2609 #ifndef OPENSSL_SYS_WINDOWS
2610     int width = 0;
2611     fd_set asyncfds;
2612     OSSL_ASYNC_FD *fds;
2613     size_t numfds;
2614     size_t i;
2615
2616     if (!SSL_get_all_async_fds(s, NULL, &numfds))
2617         return;
2618     if (numfds == 0)
2619         return;
2620     fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2621     if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2622         OPENSSL_free(fds);
2623         return;
2624     }
2625
2626     FD_ZERO(&asyncfds);
2627     for (i = 0; i < numfds; i++) {
2628         if (width <= (int)fds[i])
2629             width = (int)fds[i] + 1;
2630         openssl_fdset((int)fds[i], &asyncfds);
2631     }
2632     select(width, (void *)&asyncfds, NULL, NULL, NULL);
2633     OPENSSL_free(fds);
2634 #endif
2635 }
2636
2637 /* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2638 #if defined(OPENSSL_SYS_MSDOS)
2639 int has_stdin_waiting(void)
2640 {
2641 # if defined(OPENSSL_SYS_WINDOWS)
2642     HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2643     DWORD events = 0;
2644     INPUT_RECORD inputrec;
2645     DWORD insize = 1;
2646     BOOL peeked;
2647
2648     if (inhand == INVALID_HANDLE_VALUE) {
2649         return 0;
2650     }
2651
2652     peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2653     if (!peeked) {
2654         /* Probably redirected input? _kbhit() does not work in this case */
2655         if (!feof(stdin)) {
2656             return 1;
2657         }
2658         return 0;
2659     }
2660 # endif
2661     return _kbhit();
2662 }
2663 #endif
2664
2665 /* Corrupt a signature by modifying final byte */
2666 void corrupt_signature(const ASN1_STRING *signature)
2667 {
2668         unsigned char *s = signature->data;
2669         s[signature->length - 1] ^= 0x1;
2670 }
2671
2672 int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2673                    int days)
2674 {
2675     if (startdate == NULL || strcmp(startdate, "today") == 0) {
2676         if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2677             return 0;
2678     } else {
2679         if (!ASN1_TIME_set_string_X509(X509_getm_notBefore(x), startdate))
2680             return 0;
2681     }
2682     if (enddate == NULL) {
2683         if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2684             == NULL)
2685             return 0;
2686     } else if (!ASN1_TIME_set_string_X509(X509_getm_notAfter(x), enddate)) {
2687         return 0;
2688     }
2689     return 1;
2690 }
2691
2692 void make_uppercase(char *string)
2693 {
2694     int i;
2695
2696     for (i = 0; string[i] != '\0'; i++)
2697         string[i] = toupper((unsigned char)string[i]);
2698 }