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 #ifndef NO_SYS_TYPES_H
  22 # include <sys/types.h>
  23 #endif
  24 #ifndef OPENSSL_NO_POSIX_IO
  25 # include <sys/stat.h>
  26 # include <fcntl.h>
  27 #endif
  28 #include <ctype.h>
  29 #include <errno.h>
  30 #include <openssl/err.h>
  31 #include <openssl/x509.h>
  32 #include <openssl/x509v3.h>
  33 #include <openssl/pem.h>
  34 #include <openssl/pkcs12.h>
  35 #include <openssl/ui.h>
  36 #include <openssl/safestack.h>
  37 #ifndef OPENSSL_NO_ENGINE
  38 # include <openssl/engine.h>
  39 #endif
  40 #ifndef OPENSSL_NO_RSA
  41 # include <openssl/rsa.h>
  42 #endif
  43 #include <openssl/bn.h>
  44 #include <openssl/ssl.h>
  45 #include "s_apps.h"
  46 #include "apps.h"
  47
  48 #ifdef _WIN32
  49 static int WIN32_rename(const char *from, const char *to);
  50 # define rename(from,to) WIN32_rename((from),(to))
  51 #endif
  52
  53 typedef struct {
  54     const char *name;
  55     unsigned long flag;
  56     unsigned long mask;
  57 } NAME_EX_TBL;
  58
  59 #if !defined(OPENSSL_NO_UI) || !defined(OPENSSL_NO_ENGINE)
  60 static UI_METHOD *ui_method = NULL;
  61 #endif
  62
  63 static int set_table_opts(unsigned long *flags, const char *arg,
  64                           const NAME_EX_TBL * in_tbl);
  65 static int set_multi_opts(unsigned long *flags, const char *arg,
  66                           const NAME_EX_TBL * in_tbl);
  67
  68 int app_init(long mesgwin);
  69
  70 int chopup_args(ARGS *arg, char *buf)
  71 {
  72     int quoted;
  73     char c = '\0', *p = NULL;
  74
  75     arg->argc = 0;
  76     if (arg->size == 0) {
  77         arg->size = 20;
  78         arg->argv = app_malloc(sizeof(*arg->argv) * arg->size, "argv space");
  79     }
  80
  81     for (p = buf;;) {
  82         /* Skip whitespace. */
  83         while (*p && isspace(_UC(*p)))
  84             p++;
  85         if (!*p)
  86             break;
  87
  88         /* The start of something good :-) */
  89         if (arg->argc >= arg->size) {
  90             char **tmp;
  91             arg->size += 20;
  92             tmp = OPENSSL_realloc(arg->argv, sizeof(*arg->argv) * arg->size);
  93             if (tmp == NULL)
  94                 return 0;
  95             arg->argv = tmp;
  96         }
  97         quoted = *p == '\'' || *p == '"';
  98         if (quoted)
  99             c = *p++;
 100         arg->argv[arg->argc++] = p;
 101
 102         /* now look for the end of this */
 103         if (quoted) {
 104             while (*p && *p != c)
 105                 p++;
 106             *p++ = '\0';
 107         } else {
 108             while (*p && !isspace(_UC(*p)))
 109                 p++;
 110             if (*p)
 111                 *p++ = '\0';
 112         }
 113     }
 114     arg->argv[arg->argc] = NULL;
 115     return (1);
 116 }
 117
 118 #ifndef APP_INIT
 119 int app_init(long mesgwin)
 120 {
 121     return (1);
 122 }
 123 #endif
 124
 125 int ctx_set_verify_locations(SSL_CTX *ctx, const char *CAfile,
 126                              const char *CApath, int noCAfile, int noCApath)
 127 {
 128     if (CAfile == NULL && CApath == NULL) {
 129         if (!noCAfile && SSL_CTX_set_default_verify_file(ctx) <= 0)
 130             return 0;
 131         if (!noCApath && SSL_CTX_set_default_verify_dir(ctx) <= 0)
 132             return 0;
 133
 134         return 1;
 135     }
 136     return SSL_CTX_load_verify_locations(ctx, CAfile, CApath);
 137 }
 138
 139 #ifndef OPENSSL_NO_CT
 140
 141 int ctx_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
 142 {
 143     if (path == NULL)
 144         return SSL_CTX_set_default_ctlog_list_file(ctx);
 145
 146     return SSL_CTX_set_ctlog_list_file(ctx, path);
 147 }
 148
 149 #endif
 150
 151 static unsigned long nmflag = 0;
 152 static char nmflag_set = 0;
 153
 154 int set_nameopt(const char *arg)
 155 {
 156     int ret = set_name_ex(&nmflag, arg);
 157
 158     if (ret)
 159         nmflag_set = 1;
 160
 161     return ret;
 162 }
 163
 164 unsigned long get_nameopt(void)
 165 {
 166     return (nmflag_set) ? nmflag : XN_FLAG_ONELINE;
 167 }
 168
 169 int dump_cert_text(BIO *out, X509 *x)
 170 {
 171     print_name(out, "subject=", X509_get_subject_name(x), get_nameopt());
 172     BIO_puts(out, "\n");
 173     print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 174     BIO_puts(out, "\n");
 175
 176     return 0;
 177 }
 178
 179 #ifndef OPENSSL_NO_UI
 180 static int ui_open(UI *ui)
 181 {
 182     return UI_method_get_opener(UI_OpenSSL())(ui);
 183 }
 184
 185 static int ui_read(UI *ui, UI_STRING *uis)
 186 {
 187     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 188         && UI_get0_user_data(ui)) {
 189         switch (UI_get_string_type(uis)) {
 190         case UIT_PROMPT:
 191         case UIT_VERIFY:
 192             {
 193                 const char *password =
 194                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 195                 if (password && password[0] != '\0') {
 196                     UI_set_result(ui, uis, password);
 197                     return 1;
 198                 }
 199             }
 200             break;
 201         case UIT_NONE:
 202         case UIT_BOOLEAN:
 203         case UIT_INFO:
 204         case UIT_ERROR:
 205             break;
 206         }
 207     }
 208     return UI_method_get_reader(UI_OpenSSL())(ui, uis);
 209 }
 210
 211 static int ui_write(UI *ui, UI_STRING *uis)
 212 {
 213     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 214         && UI_get0_user_data(ui)) {
 215         switch (UI_get_string_type(uis)) {
 216         case UIT_PROMPT:
 217         case UIT_VERIFY:
 218             {
 219                 const char *password =
 220                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 221                 if (password && password[0] != '\0')
 222                     return 1;
 223             }
 224             break;
 225         case UIT_NONE:
 226         case UIT_BOOLEAN:
 227         case UIT_INFO:
 228         case UIT_ERROR:
 229             break;
 230         }
 231     }
 232     return UI_method_get_writer(UI_OpenSSL())(ui, uis);
 233 }
 234
 235 static int ui_close(UI *ui)
 236 {
 237     return UI_method_get_closer(UI_OpenSSL())(ui);
 238 }
 239
 240 int setup_ui_method(void)
 241 {
 242     ui_method = UI_create_method("OpenSSL application user interface");
 243     UI_method_set_opener(ui_method, ui_open);
 244     UI_method_set_reader(ui_method, ui_read);
 245     UI_method_set_writer(ui_method, ui_write);
 246     UI_method_set_closer(ui_method, ui_close);
 247     return 0;
 248 }
 249
 250 void destroy_ui_method(void)
 251 {
 252     if (ui_method) {
 253         UI_destroy_method(ui_method);
 254         ui_method = NULL;
 255     }
 256 }
 257
 258 const UI_METHOD *get_ui_method(void)
 259 {
 260     return ui_method;
 261 }
 262 #endif
 263
 264 int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_tmp)
 265 {
 266     int res = 0;
 267 #ifndef OPENSSL_NO_UI
 268     UI *ui = NULL;
 269 #endif
 270     PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
 271
 272 #ifdef OPENSSL_NO_UI
 273     if (cb_data != NULL && cb_data->password != NULL) {
 274         res = strlen(cb_data->password);
 275         if (res > bufsiz)
 276             res = bufsiz;
 277         memcpy(buf, cb_data->password, res);
 278     }
 279 #else
 280     ui = UI_new_method(ui_method);
 281     if (ui) {
 282         int ok = 0;
 283         char *buff = NULL;
 284         int ui_flags = 0;
 285         const char *prompt_info = NULL;
 286         char *prompt;
 287
 288         if (cb_data != NULL && cb_data->prompt_info != NULL)
 289             prompt_info = cb_data->prompt_info;
 290         prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
 291         if (!prompt) {
 292             BIO_printf(bio_err, "Out of memory\n");
 293             UI_free(ui);
 294             return 0;
 295         }
 296
 297         ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
 298         UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
 299
 300         /* We know that there is no previous user data to return to us */
 301         (void)UI_add_user_data(ui, cb_data);
 302
 303         ok = UI_add_input_string(ui, prompt, ui_flags, buf,
 304                                  PW_MIN_LENGTH, bufsiz - 1);
 305
 306         if (ok >= 0 && verify) {
 307             buff = app_malloc(bufsiz, "password buffer");
 308             ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
 309                                       PW_MIN_LENGTH, bufsiz - 1, buf);
 310         }
 311         if (ok >= 0)
 312             do {
 313                 ok = UI_process(ui);
 314             } while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
 315
 316         OPENSSL_clear_free(buff, (unsigned int)bufsiz);
 317
 318         if (ok >= 0)
 319             res = strlen(buf);
 320         if (ok == -1) {
 321             BIO_printf(bio_err, "User interface error\n");
 322             ERR_print_errors(bio_err);
 323             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 324             res = 0;
 325         }
 326         if (ok == -2) {
 327             BIO_printf(bio_err, "aborted!\n");
 328             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 329             res = 0;
 330         }
 331         UI_free(ui);
 332         OPENSSL_free(prompt);
 333     }
 334 #endif
 335     return res;
 336 }
 337
 338 static char *app_get_pass(const char *arg, int keepbio);
 339
 340 int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
 341 {
 342     int same;
 343     if (arg2 == NULL || arg1 == NULL || strcmp(arg1, arg2))
 344         same = 0;
 345     else
 346         same = 1;
 347     if (arg1 != NULL) {
 348         *pass1 = app_get_pass(arg1, same);
 349         if (*pass1 == NULL)
 350             return 0;
 351     } else if (pass1 != NULL) {
 352         *pass1 = NULL;
 353     }
 354     if (arg2 != NULL) {
 355         *pass2 = app_get_pass(arg2, same ? 2 : 0);
 356         if (*pass2 == NULL)
 357             return 0;
 358     } else if (pass2 != NULL) {
 359         *pass2 = NULL;
 360     }
 361     return 1;
 362 }
 363
 364 static char *app_get_pass(const char *arg, int keepbio)
 365 {
 366     char *tmp, tpass[APP_PASS_LEN];
 367     static BIO *pwdbio = NULL;
 368     int i;
 369
 370     if (strncmp(arg, "pass:", 5) == 0)
 371         return OPENSSL_strdup(arg + 5);
 372     if (strncmp(arg, "env:", 4) == 0) {
 373         tmp = getenv(arg + 4);
 374         if (tmp == NULL) {
 375             BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
 376             return NULL;
 377         }
 378         return OPENSSL_strdup(tmp);
 379     }
 380     if (!keepbio || pwdbio == NULL) {
 381         if (strncmp(arg, "file:", 5) == 0) {
 382             pwdbio = BIO_new_file(arg + 5, "r");
 383             if (pwdbio == NULL) {
 384                 BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
 385                 return NULL;
 386             }
 387 #if !defined(_WIN32)
 388             /*
 389              * Under _WIN32, which covers even Win64 and CE, file
 390              * descriptors referenced by BIO_s_fd are not inherited
 391              * by child process and therefore below is not an option.
 392              * It could have been an option if bss_fd.c was operating
 393              * on real Windows descriptors, such as those obtained
 394              * with CreateFile.
 395              */
 396         } else if (strncmp(arg, "fd:", 3) == 0) {
 397             BIO *btmp;
 398             i = atoi(arg + 3);
 399             if (i >= 0)
 400                 pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 401             if ((i < 0) || !pwdbio) {
 402                 BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
 403                 return NULL;
 404             }
 405             /*
 406              * Can't do BIO_gets on an fd BIO so add a buffering BIO
 407              */
 408             btmp = BIO_new(BIO_f_buffer());
 409             pwdbio = BIO_push(btmp, pwdbio);
 410 #endif
 411         } else if (strcmp(arg, "stdin") == 0) {
 412             pwdbio = dup_bio_in(FORMAT_TEXT);
 413             if (!pwdbio) {
 414                 BIO_printf(bio_err, "Can't open BIO for stdin\n");
 415                 return NULL;
 416             }
 417         } else {
 418             BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
 419             return NULL;
 420         }
 421     }
 422     i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 423     if (keepbio != 1) {
 424         BIO_free_all(pwdbio);
 425         pwdbio = NULL;
 426     }
 427     if (i <= 0) {
 428         BIO_printf(bio_err, "Error reading password from BIO\n");
 429         return NULL;
 430     }
 431     tmp = strchr(tpass, '\n');
 432     if (tmp != NULL)
 433         *tmp = 0;
 434     return OPENSSL_strdup(tpass);
 435 }
 436
 437 static CONF *app_load_config_(BIO *in, const char *filename)
 438 {
 439     long errorline = -1;
 440     CONF *conf;
 441     int i;
 442
 443     conf = NCONF_new(NULL);
 444     i = NCONF_load_bio(conf, in, &errorline);
 445     if (i > 0)
 446         return conf;
 447
 448     if (errorline <= 0)
 449         BIO_printf(bio_err, "%s: Can't load config file \"%s\"\n",
 450                    opt_getprog(), filename);
 451     else
 452         BIO_printf(bio_err, "%s: Error on line %ld of config file \"%s\"\n",
 453                    opt_getprog(), errorline, filename);
 454     NCONF_free(conf);
 455     return NULL;
 456 }
 457
 458 CONF *app_load_config(const char *filename)
 459 {
 460     BIO *in;
 461     CONF *conf;
 462
 463     in = bio_open_default(filename, 'r', FORMAT_TEXT);
 464     if (in == NULL)
 465         return NULL;
 466
 467     conf = app_load_config_(in, filename);
 468     BIO_free(in);
 469     return conf;
 470 }
 471
 472 CONF *app_load_config_quiet(const char *filename)
 473 {
 474     BIO *in;
 475     CONF *conf;
 476
 477     in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
 478     if (in == NULL)
 479         return NULL;
 480
 481     conf = app_load_config_(in, filename);
 482     BIO_free(in);
 483     return conf;
 484 }
 485
 486 int app_load_modules(const CONF *config)
 487 {
 488     CONF *to_free = NULL;
 489
 490     if (config == NULL)
 491         config = to_free = app_load_config_quiet(default_config_file);
 492     if (config == NULL)
 493         return 1;
 494
 495     if (CONF_modules_load(config, NULL, 0) <= 0) {
 496         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
 497         ERR_print_errors(bio_err);
 498         NCONF_free(to_free);
 499         return 0;
 500     }
 501     NCONF_free(to_free);
 502     return 1;
 503 }
 504
 505 int add_oid_section(CONF *conf)
 506 {
 507     char *p;
 508     STACK_OF(CONF_VALUE) *sktmp;
 509     CONF_VALUE *cnf;
 510     int i;
 511
 512     if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
 513         ERR_clear_error();
 514         return 1;
 515     }
 516     if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
 517         BIO_printf(bio_err, "problem loading oid section %s\n", p);
 518         return 0;
 519     }
 520     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 521         cnf = sk_CONF_VALUE_value(sktmp, i);
 522         if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 523             BIO_printf(bio_err, "problem creating object %s=%s\n",
 524                        cnf->name, cnf->value);
 525             return 0;
 526         }
 527     }
 528     return 1;
 529 }
 530
 531 static int load_pkcs12(BIO *in, const char *desc,
 532                        pem_password_cb *pem_cb, void *cb_data,
 533                        EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 534 {
 535     const char *pass;
 536     char tpass[PEM_BUFSIZE];
 537     int len, ret = 0;
 538     PKCS12 *p12;
 539     p12 = d2i_PKCS12_bio(in, NULL);
 540     if (p12 == NULL) {
 541         BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
 542         goto die;
 543     }
 544     /* See if an empty password will do */
 545     if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0)) {
 546         pass = "";
 547     } else {
 548         if (!pem_cb)
 549             pem_cb = (pem_password_cb *)password_callback;
 550         len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
 551         if (len < 0) {
 552             BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
 553             goto die;
 554         }
 555         if (len < PEM_BUFSIZE)
 556             tpass[len] = 0;
 557         if (!PKCS12_verify_mac(p12, tpass, len)) {
 558             BIO_printf(bio_err,
 559                        "Mac verify error (wrong password?) in PKCS12 file for %s\n",
 560                        desc);
 561             goto die;
 562         }
 563         pass = tpass;
 564     }
 565     ret = PKCS12_parse(p12, pass, pkey, cert, ca);
 566  die:
 567     PKCS12_free(p12);
 568     return ret;
 569 }
 570
 571 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 572 static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
 573 {
 574     char *host = NULL, *port = NULL, *path = NULL;
 575     BIO *bio = NULL;
 576     OCSP_REQ_CTX *rctx = NULL;
 577     int use_ssl, rv = 0;
 578     if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
 579         goto err;
 580     if (use_ssl) {
 581         BIO_puts(bio_err, "https not supported\n");
 582         goto err;
 583     }
 584     bio = BIO_new_connect(host);
 585     if (!bio || !BIO_set_conn_port(bio, port))
 586         goto err;
 587     rctx = OCSP_REQ_CTX_new(bio, 1024);
 588     if (rctx == NULL)
 589         goto err;
 590     if (!OCSP_REQ_CTX_http(rctx, "GET", path))
 591         goto err;
 592     if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
 593         goto err;
 594     if (pcert) {
 595         do {
 596             rv = X509_http_nbio(rctx, pcert);
 597         } while (rv == -1);
 598     } else {
 599         do {
 600             rv = X509_CRL_http_nbio(rctx, pcrl);
 601         } while (rv == -1);
 602     }
 603
 604  err:
 605     OPENSSL_free(host);
 606     OPENSSL_free(path);
 607     OPENSSL_free(port);
 608     BIO_free_all(bio);
 609     OCSP_REQ_CTX_free(rctx);
 610     if (rv != 1) {
 611         BIO_printf(bio_err, "Error loading %s from %s\n",
 612                    pcert ? "certificate" : "CRL", url);
 613         ERR_print_errors(bio_err);
 614     }
 615     return rv;
 616 }
 617 #endif
 618
 619 X509 *load_cert(const char *file, int format, const char *cert_descrip)
 620 {
 621     X509 *x = NULL;
 622     BIO *cert;
 623
 624     if (format == FORMAT_HTTP) {
 625 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 626         load_cert_crl_http(file, &x, NULL);
 627 #endif
 628         return x;
 629     }
 630
 631     if (file == NULL) {
 632         unbuffer(stdin);
 633         cert = dup_bio_in(format);
 634     } else {
 635         cert = bio_open_default(file, 'r', format);
 636     }
 637     if (cert == NULL)
 638         goto end;
 639
 640     if (format == FORMAT_ASN1) {
 641         x = d2i_X509_bio(cert, NULL);
 642     } else if (format == FORMAT_PEM) {
 643         x = PEM_read_bio_X509_AUX(cert, NULL,
 644                                   (pem_password_cb *)password_callback, NULL);
 645     } else if (format == FORMAT_PKCS12) {
 646         if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
 647             goto end;
 648     } else {
 649         BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
 650         goto end;
 651     }
 652  end:
 653     if (x == NULL) {
 654         BIO_printf(bio_err, "unable to load certificate\n");
 655         ERR_print_errors(bio_err);
 656     }
 657     BIO_free(cert);
 658     return (x);
 659 }
 660
 661 X509_CRL *load_crl(const char *infile, int format)
 662 {
 663     X509_CRL *x = NULL;
 664     BIO *in = NULL;
 665
 666     if (format == FORMAT_HTTP) {
 667 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 668         load_cert_crl_http(infile, NULL, &x);
 669 #endif
 670         return x;
 671     }
 672
 673     in = bio_open_default(infile, 'r', format);
 674     if (in == NULL)
 675         goto end;
 676     if (format == FORMAT_ASN1) {
 677         x = d2i_X509_CRL_bio(in, NULL);
 678     } else if (format == FORMAT_PEM) {
 679         x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 680     } else {
 681         BIO_printf(bio_err, "bad input format specified for input crl\n");
 682         goto end;
 683     }
 684     if (x == NULL) {
 685         BIO_printf(bio_err, "unable to load CRL\n");
 686         ERR_print_errors(bio_err);
 687         goto end;
 688     }
 689
 690  end:
 691     BIO_free(in);
 692     return (x);
 693 }
 694
 695 EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
 696                    const char *pass, ENGINE *e, const char *key_descrip)
 697 {
 698     BIO *key = NULL;
 699     EVP_PKEY *pkey = NULL;
 700     PW_CB_DATA cb_data;
 701
 702     cb_data.password = pass;
 703     cb_data.prompt_info = file;
 704
 705     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 706         BIO_printf(bio_err, "no keyfile specified\n");
 707         goto end;
 708     }
 709     if (format == FORMAT_ENGINE) {
 710         if (e == NULL) {
 711             BIO_printf(bio_err, "no engine specified\n");
 712         } else {
 713 #ifndef OPENSSL_NO_ENGINE
 714             if (ENGINE_init(e)) {
 715                 pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
 716                 ENGINE_finish(e);
 717             }
 718             if (pkey == NULL) {
 719                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 720                 ERR_print_errors(bio_err);
 721             }
 722 #else
 723             BIO_printf(bio_err, "engines not supported\n");
 724 #endif
 725         }
 726         goto end;
 727     }
 728     if (file == NULL && maybe_stdin) {
 729         unbuffer(stdin);
 730         key = dup_bio_in(format);
 731     } else {
 732         key = bio_open_default(file, 'r', format);
 733     }
 734     if (key == NULL)
 735         goto end;
 736     if (format == FORMAT_ASN1) {
 737         pkey = d2i_PrivateKey_bio(key, NULL);
 738     } else if (format == FORMAT_PEM) {
 739         pkey = PEM_read_bio_PrivateKey(key, NULL,
 740                                        (pem_password_cb *)password_callback,
 741                                        &cb_data);
 742     } else if (format == FORMAT_PKCS12) {
 743         if (!load_pkcs12(key, key_descrip,
 744                          (pem_password_cb *)password_callback, &cb_data,
 745                          &pkey, NULL, NULL))
 746             goto end;
 747 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
 748     } else if (format == FORMAT_MSBLOB) {
 749         pkey = b2i_PrivateKey_bio(key);
 750     } else if (format == FORMAT_PVK) {
 751         pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
 752                            &cb_data);
 753 #endif
 754     } else {
 755         BIO_printf(bio_err, "bad input format specified for key file\n");
 756         goto end;
 757     }
 758  end:
 759     BIO_free(key);
 760     if (pkey == NULL) {
 761         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 762         ERR_print_errors(bio_err);
 763     }
 764     return (pkey);
 765 }
 766
 767 EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
 768                       const char *pass, ENGINE *e, const char *key_descrip)
 769 {
 770     BIO *key = NULL;
 771     EVP_PKEY *pkey = NULL;
 772     PW_CB_DATA cb_data;
 773
 774     cb_data.password = pass;
 775     cb_data.prompt_info = file;
 776
 777     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 778         BIO_printf(bio_err, "no keyfile specified\n");
 779         goto end;
 780     }
 781     if (format == FORMAT_ENGINE) {
 782         if (e == NULL) {
 783             BIO_printf(bio_err, "no engine specified\n");
 784         } else {
 785 #ifndef OPENSSL_NO_ENGINE
 786             pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
 787             if (pkey == NULL) {
 788                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 789                 ERR_print_errors(bio_err);
 790             }
 791 #else
 792             BIO_printf(bio_err, "engines not supported\n");
 793 #endif
 794         }
 795         goto end;
 796     }
 797     if (file == NULL && maybe_stdin) {
 798         unbuffer(stdin);
 799         key = dup_bio_in(format);
 800     } else {
 801         key = bio_open_default(file, 'r', format);
 802     }
 803     if (key == NULL)
 804         goto end;
 805     if (format == FORMAT_ASN1) {
 806         pkey = d2i_PUBKEY_bio(key, NULL);
 807     } else if (format == FORMAT_ASN1RSA) {
 808 #ifndef OPENSSL_NO_RSA
 809         RSA *rsa;
 810         rsa = d2i_RSAPublicKey_bio(key, NULL);
 811         if (rsa) {
 812             pkey = EVP_PKEY_new();
 813             if (pkey != NULL)
 814                 EVP_PKEY_set1_RSA(pkey, rsa);
 815             RSA_free(rsa);
 816         } else
 817 #else
 818         BIO_printf(bio_err, "RSA keys not supported\n");
 819 #endif
 820             pkey = NULL;
 821     } else if (format == FORMAT_PEMRSA) {
 822 #ifndef OPENSSL_NO_RSA
 823         RSA *rsa;
 824         rsa = PEM_read_bio_RSAPublicKey(key, NULL,
 825                                         (pem_password_cb *)password_callback,
 826                                         &cb_data);
 827         if (rsa != NULL) {
 828             pkey = EVP_PKEY_new();
 829             if (pkey != NULL)
 830                 EVP_PKEY_set1_RSA(pkey, rsa);
 831             RSA_free(rsa);
 832         } else
 833 #else
 834         BIO_printf(bio_err, "RSA keys not supported\n");
 835 #endif
 836             pkey = NULL;
 837     } else if (format == FORMAT_PEM) {
 838         pkey = PEM_read_bio_PUBKEY(key, NULL,
 839                                    (pem_password_cb *)password_callback,
 840                                    &cb_data);
 841 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
 842     } else if (format == FORMAT_MSBLOB) {
 843         pkey = b2i_PublicKey_bio(key);
 844 #endif
 845     }
 846  end:
 847     BIO_free(key);
 848     if (pkey == NULL)
 849         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 850     return (pkey);
 851 }
 852
 853 static int load_certs_crls(const char *file, int format,
 854                            const char *pass, const char *desc,
 855                            STACK_OF(X509) **pcerts,
 856                            STACK_OF(X509_CRL) **pcrls)
 857 {
 858     int i;
 859     BIO *bio;
 860     STACK_OF(X509_INFO) *xis = NULL;
 861     X509_INFO *xi;
 862     PW_CB_DATA cb_data;
 863     int rv = 0;
 864
 865     cb_data.password = pass;
 866     cb_data.prompt_info = file;
 867
 868     if (format != FORMAT_PEM) {
 869         BIO_printf(bio_err, "bad input format specified for %s\n", desc);
 870         return 0;
 871     }
 872
 873     bio = bio_open_default(file, 'r', FORMAT_PEM);
 874     if (bio == NULL)
 875         return 0;
 876
 877     xis = PEM_X509_INFO_read_bio(bio, NULL,
 878                                  (pem_password_cb *)password_callback,
 879                                  &cb_data);
 880
 881     BIO_free(bio);
 882
 883     if (pcerts != NULL && *pcerts == NULL) {
 884         *pcerts = sk_X509_new_null();
 885         if (*pcerts == NULL)
 886             goto end;
 887     }
 888
 889     if (pcrls != NULL && *pcrls == NULL) {
 890         *pcrls = sk_X509_CRL_new_null();
 891         if (*pcrls == NULL)
 892             goto end;
 893     }
 894
 895     for (i = 0; i < sk_X509_INFO_num(xis); i++) {
 896         xi = sk_X509_INFO_value(xis, i);
 897         if (xi->x509 != NULL && pcerts != NULL) {
 898             if (!sk_X509_push(*pcerts, xi->x509))
 899                 goto end;
 900             xi->x509 = NULL;
 901         }
 902         if (xi->crl != NULL && pcrls != NULL) {
 903             if (!sk_X509_CRL_push(*pcrls, xi->crl))
 904                 goto end;
 905             xi->crl = NULL;
 906         }
 907     }
 908
 909     if (pcerts != NULL && sk_X509_num(*pcerts) > 0)
 910         rv = 1;
 911
 912     if (pcrls != NULL && sk_X509_CRL_num(*pcrls) > 0)
 913         rv = 1;
 914
 915  end:
 916
 917     sk_X509_INFO_pop_free(xis, X509_INFO_free);
 918
 919     if (rv == 0) {
 920         if (pcerts != NULL) {
 921             sk_X509_pop_free(*pcerts, X509_free);
 922             *pcerts = NULL;
 923         }
 924         if (pcrls != NULL) {
 925             sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
 926             *pcrls = NULL;
 927         }
 928         BIO_printf(bio_err, "unable to load %s\n",
 929                    pcerts ? "certificates" : "CRLs");
 930         ERR_print_errors(bio_err);
 931     }
 932     return rv;
 933 }
 934
 935 void* app_malloc(int sz, const char *what)
 936 {
 937     void *vp = OPENSSL_malloc(sz);
 938
 939     if (vp == NULL) {
 940         BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
 941                 opt_getprog(), sz, what);
 942         ERR_print_errors(bio_err);
 943         exit(1);
 944     }
 945     return vp;
 946 }
 947
 948 /*
 949  * Initialize or extend, if *certs != NULL, a certificate stack.
 950  */
 951 int load_certs(const char *file, STACK_OF(X509) **certs, int format,
 952                const char *pass, const char *desc)
 953 {
 954     return load_certs_crls(file, format, pass, desc, certs, NULL);
 955 }
 956
 957 /*
 958  * Initialize or extend, if *crls != NULL, a certificate stack.
 959  */
 960 int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
 961               const char *pass, const char *desc)
 962 {
 963     return load_certs_crls(file, format, pass, desc, NULL, crls);
 964 }
 965
 966 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 967 /* Return error for unknown extensions */
 968 #define X509V3_EXT_DEFAULT              0
 969 /* Print error for unknown extensions */
 970 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 971 /* ASN1 parse unknown extensions */
 972 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 973 /* BIO_dump unknown extensions */
 974 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 975
 976 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 977                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 978
 979 int set_cert_ex(unsigned long *flags, const char *arg)
 980 {
 981     static const NAME_EX_TBL cert_tbl[] = {
 982         {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
 983         {"ca_default", X509_FLAG_CA, 0xffffffffl},
 984         {"no_header", X509_FLAG_NO_HEADER, 0},
 985         {"no_version", X509_FLAG_NO_VERSION, 0},
 986         {"no_serial", X509_FLAG_NO_SERIAL, 0},
 987         {"no_signame", X509_FLAG_NO_SIGNAME, 0},
 988         {"no_validity", X509_FLAG_NO_VALIDITY, 0},
 989         {"no_subject", X509_FLAG_NO_SUBJECT, 0},
 990         {"no_issuer", X509_FLAG_NO_ISSUER, 0},
 991         {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
 992         {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
 993         {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
 994         {"no_aux", X509_FLAG_NO_AUX, 0},
 995         {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
 996         {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
 997         {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 998         {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 999         {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1000         {NULL, 0, 0}
1001     };
1002     return set_multi_opts(flags, arg, cert_tbl);
1003 }
1004
1005 int set_name_ex(unsigned long *flags, const char *arg)
1006 {
1007     static const NAME_EX_TBL ex_tbl[] = {
1008         {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1009         {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
1010         {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1011         {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1012         {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1013         {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1014         {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1015         {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1016         {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1017         {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1018         {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1019         {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1020         {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1021         {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1022         {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1023         {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1024         {"dn_rev", XN_FLAG_DN_REV, 0},
1025         {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1026         {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1027         {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1028         {"align", XN_FLAG_FN_ALIGN, 0},
1029         {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1030         {"space_eq", XN_FLAG_SPC_EQ, 0},
1031         {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1032         {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1033         {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1034         {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1035         {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1036         {NULL, 0, 0}
1037     };
1038     if (set_multi_opts(flags, arg, ex_tbl) == 0)
1039         return 0;
1040     if ((*flags & XN_FLAG_SEP_MASK) == 0)
1041         *flags |= XN_FLAG_SEP_CPLUS_SPC;
1042     return 1;
1043 }
1044
1045 int set_ext_copy(int *copy_type, const char *arg)
1046 {
1047     if (strcasecmp(arg, "none") == 0)
1048         *copy_type = EXT_COPY_NONE;
1049     else if (strcasecmp(arg, "copy") == 0)
1050         *copy_type = EXT_COPY_ADD;
1051     else if (strcasecmp(arg, "copyall") == 0)
1052         *copy_type = EXT_COPY_ALL;
1053     else
1054         return 0;
1055     return 1;
1056 }
1057
1058 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1059 {
1060     STACK_OF(X509_EXTENSION) *exts = NULL;
1061     X509_EXTENSION *ext, *tmpext;
1062     ASN1_OBJECT *obj;
1063     int i, idx, ret = 0;
1064     if (!x || !req || (copy_type == EXT_COPY_NONE))
1065         return 1;
1066     exts = X509_REQ_get_extensions(req);
1067
1068     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1069         ext = sk_X509_EXTENSION_value(exts, i);
1070         obj = X509_EXTENSION_get_object(ext);
1071         idx = X509_get_ext_by_OBJ(x, obj, -1);
1072         /* Does extension exist? */
1073         if (idx != -1) {
1074             /* If normal copy don't override existing extension */
1075             if (copy_type == EXT_COPY_ADD)
1076                 continue;
1077             /* Delete all extensions of same type */
1078             do {
1079                 tmpext = X509_get_ext(x, idx);
1080                 X509_delete_ext(x, idx);
1081                 X509_EXTENSION_free(tmpext);
1082                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1083             } while (idx != -1);
1084         }
1085         if (!X509_add_ext(x, ext, -1))
1086             goto end;
1087     }
1088
1089     ret = 1;
1090
1091  end:
1092
1093     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1094
1095     return ret;
1096 }
1097
1098 static int set_multi_opts(unsigned long *flags, const char *arg,
1099                           const NAME_EX_TBL * in_tbl)
1100 {
1101     STACK_OF(CONF_VALUE) *vals;
1102     CONF_VALUE *val;
1103     int i, ret = 1;
1104     if (!arg)
1105         return 0;
1106     vals = X509V3_parse_list(arg);
1107     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1108         val = sk_CONF_VALUE_value(vals, i);
1109         if (!set_table_opts(flags, val->name, in_tbl))
1110             ret = 0;
1111     }
1112     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1113     return ret;
1114 }
1115
1116 static int set_table_opts(unsigned long *flags, const char *arg,
1117                           const NAME_EX_TBL * in_tbl)
1118 {
1119     char c;
1120     const NAME_EX_TBL *ptbl;
1121     c = arg[0];
1122
1123     if (c == '-') {
1124         c = 0;
1125         arg++;
1126     } else if (c == '+') {
1127         c = 1;
1128         arg++;
1129     } else {
1130         c = 1;
1131     }
1132
1133     for (ptbl = in_tbl; ptbl->name; ptbl++) {
1134         if (strcasecmp(arg, ptbl->name) == 0) {
1135             *flags &= ~ptbl->mask;
1136             if (c)
1137                 *flags |= ptbl->flag;
1138             else
1139                 *flags &= ~ptbl->flag;
1140             return 1;
1141         }
1142     }
1143     return 0;
1144 }
1145
1146 void print_name(BIO *out, const char *title, X509_NAME *nm,
1147                 unsigned long lflags)
1148 {
1149     char *buf;
1150     char mline = 0;
1151     int indent = 0;
1152
1153     if (title)
1154         BIO_puts(out, title);
1155     if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1156         mline = 1;
1157         indent = 4;
1158     }
1159     if (lflags == XN_FLAG_COMPAT) {
1160         buf = X509_NAME_oneline(nm, 0, 0);
1161         BIO_puts(out, buf);
1162         BIO_puts(out, "\n");
1163         OPENSSL_free(buf);
1164     } else {
1165         if (mline)
1166             BIO_puts(out, "\n");
1167         X509_NAME_print_ex(out, nm, indent, lflags);
1168         BIO_puts(out, "\n");
1169     }
1170 }
1171
1172 void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1173                       int len, unsigned char *buffer)
1174 {
1175     BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1176     if (BN_is_zero(in)) {
1177         BIO_printf(out, "\n\t0x00");
1178     } else {
1179         int i, l;
1180
1181         l = BN_bn2bin(in, buffer);
1182         for (i = 0; i < l; i++) {
1183             if ((i % 10) == 0)
1184                 BIO_printf(out, "\n\t");
1185             if (i < l - 1)
1186                 BIO_printf(out, "0x%02X, ", buffer[i]);
1187             else
1188                 BIO_printf(out, "0x%02X", buffer[i]);
1189         }
1190     }
1191     BIO_printf(out, "\n    };\n");
1192 }
1193
1194 void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1195 {
1196     int i;
1197
1198     BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1199     for (i = 0; i < len; i++) {
1200         if ((i % 10) == 0)
1201             BIO_printf(out, "\n    ");
1202         if (i < len - 1)
1203             BIO_printf(out, "0x%02X, ", d[i]);
1204         else
1205             BIO_printf(out, "0x%02X", d[i]);
1206     }
1207     BIO_printf(out, "\n};\n");
1208 }
1209
1210 X509_STORE *setup_verify(const char *CAfile, const char *CApath, int noCAfile, int noCApath)
1211 {
1212     X509_STORE *store = X509_STORE_new();
1213     X509_LOOKUP *lookup;
1214
1215     if (store == NULL)
1216         goto end;
1217
1218     if (CAfile != NULL || !noCAfile) {
1219         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1220         if (lookup == NULL)
1221             goto end;
1222         if (CAfile) {
1223             if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1224                 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1225                 goto end;
1226             }
1227         } else {
1228             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1229         }
1230     }
1231
1232     if (CApath != NULL || !noCApath) {
1233         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1234         if (lookup == NULL)
1235             goto end;
1236         if (CApath) {
1237             if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1238                 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1239                 goto end;
1240             }
1241         } else {
1242             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1243         }
1244     }
1245
1246     ERR_clear_error();
1247     return store;
1248  end:
1249     X509_STORE_free(store);
1250     return NULL;
1251 }
1252
1253 #ifndef OPENSSL_NO_ENGINE
1254 /* Try to load an engine in a shareable library */
1255 static ENGINE *try_load_engine(const char *engine)
1256 {
1257     ENGINE *e = ENGINE_by_id("dynamic");
1258     if (e) {
1259         if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1260             || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1261             ENGINE_free(e);
1262             e = NULL;
1263         }
1264     }
1265     return e;
1266 }
1267 #endif
1268
1269 ENGINE *setup_engine(const char *engine, int debug)
1270 {
1271     ENGINE *e = NULL;
1272
1273 #ifndef OPENSSL_NO_ENGINE
1274     if (engine != NULL) {
1275         if (strcmp(engine, "auto") == 0) {
1276             BIO_printf(bio_err, "enabling auto ENGINE support\n");
1277             ENGINE_register_all_complete();
1278             return NULL;
1279         }
1280         if ((e = ENGINE_by_id(engine)) == NULL
1281             && (e = try_load_engine(engine)) == NULL) {
1282             BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1283             ERR_print_errors(bio_err);
1284             return NULL;
1285         }
1286         if (debug) {
1287             ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1288         }
1289         ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1290         if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1291             BIO_printf(bio_err, "can't use that engine\n");
1292             ERR_print_errors(bio_err);
1293             ENGINE_free(e);
1294             return NULL;
1295         }
1296
1297         BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1298     }
1299 #endif
1300     return e;
1301 }
1302
1303 void release_engine(ENGINE *e)
1304 {
1305 #ifndef OPENSSL_NO_ENGINE
1306     if (e != NULL)
1307         /* Free our "structural" reference. */
1308         ENGINE_free(e);
1309 #endif
1310 }
1311
1312 static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1313 {
1314     const char *n;
1315
1316     n = a[DB_serial];
1317     while (*n == '0')
1318         n++;
1319     return OPENSSL_LH_strhash(n);
1320 }
1321
1322 static int index_serial_cmp(const OPENSSL_CSTRING *a,
1323                             const OPENSSL_CSTRING *b)
1324 {
1325     const char *aa, *bb;
1326
1327     for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1328     for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1329     return (strcmp(aa, bb));
1330 }
1331
1332 static int index_name_qual(char **a)
1333 {
1334     return (a[0][0] == 'V');
1335 }
1336
1337 static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1338 {
1339     return OPENSSL_LH_strhash(a[DB_name]);
1340 }
1341
1342 int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1343 {
1344     return (strcmp(a[DB_name], b[DB_name]));
1345 }
1346
1347 static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1348 static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1349 static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1350 static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1351 #undef BSIZE
1352 #define BSIZE 256
1353 BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai)
1354 {
1355     BIO *in = NULL;
1356     BIGNUM *ret = NULL;
1357     char buf[1024];
1358     ASN1_INTEGER *ai = NULL;
1359
1360     ai = ASN1_INTEGER_new();
1361     if (ai == NULL)
1362         goto err;
1363
1364     in = BIO_new_file(serialfile, "r");
1365     if (in == NULL) {
1366         if (!create) {
1367             perror(serialfile);
1368             goto err;
1369         }
1370         ERR_clear_error();
1371         ret = BN_new();
1372         if (ret == NULL || !rand_serial(ret, ai))
1373             BIO_printf(bio_err, "Out of memory\n");
1374     } else {
1375         if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1376             BIO_printf(bio_err, "unable to load number from %s\n",
1377                        serialfile);
1378             goto err;
1379         }
1380         ret = ASN1_INTEGER_to_BN(ai, NULL);
1381         if (ret == NULL) {
1382             BIO_printf(bio_err,
1383                        "error converting number from bin to BIGNUM\n");
1384             goto err;
1385         }
1386     }
1387
1388     if (ret && retai) {
1389         *retai = ai;
1390         ai = NULL;
1391     }
1392  err:
1393     BIO_free(in);
1394     ASN1_INTEGER_free(ai);
1395     return (ret);
1396 }
1397
1398 int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1399                 ASN1_INTEGER **retai)
1400 {
1401     char buf[1][BSIZE];
1402     BIO *out = NULL;
1403     int ret = 0;
1404     ASN1_INTEGER *ai = NULL;
1405     int j;
1406
1407     if (suffix == NULL)
1408         j = strlen(serialfile);
1409     else
1410         j = strlen(serialfile) + strlen(suffix) + 1;
1411     if (j >= BSIZE) {
1412         BIO_printf(bio_err, "file name too long\n");
1413         goto err;
1414     }
1415
1416     if (suffix == NULL)
1417         OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1418     else {
1419 #ifndef OPENSSL_SYS_VMS
1420         j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, suffix);
1421 #else
1422         j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, suffix);
1423 #endif
1424     }
1425     out = BIO_new_file(buf[0], "w");
1426     if (out == NULL) {
1427         ERR_print_errors(bio_err);
1428         goto err;
1429     }
1430
1431     if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1432         BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1433         goto err;
1434     }
1435     i2a_ASN1_INTEGER(out, ai);
1436     BIO_puts(out, "\n");
1437     ret = 1;
1438     if (retai) {
1439         *retai = ai;
1440         ai = NULL;
1441     }
1442  err:
1443     BIO_free_all(out);
1444     ASN1_INTEGER_free(ai);
1445     return (ret);
1446 }
1447
1448 int rotate_serial(const char *serialfile, const char *new_suffix,
1449                   const char *old_suffix)
1450 {
1451     char buf[2][BSIZE];
1452     int i, j;
1453
1454     i = strlen(serialfile) + strlen(old_suffix);
1455     j = strlen(serialfile) + strlen(new_suffix);
1456     if (i > j)
1457         j = i;
1458     if (j + 1 >= BSIZE) {
1459         BIO_printf(bio_err, "file name too long\n");
1460         goto err;
1461     }
1462 #ifndef OPENSSL_SYS_VMS
1463     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, new_suffix);
1464     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", serialfile, old_suffix);
1465 #else
1466     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, new_suffix);
1467     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", serialfile, old_suffix);
1468 #endif
1469     if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1470 #ifdef ENOTDIR
1471         && errno != ENOTDIR
1472 #endif
1473         ) {
1474         BIO_printf(bio_err,
1475                    "unable to rename %s to %s\n", serialfile, buf[1]);
1476         perror("reason");
1477         goto err;
1478     }
1479     if (rename(buf[0], serialfile) < 0) {
1480         BIO_printf(bio_err,
1481                    "unable to rename %s to %s\n", buf[0], serialfile);
1482         perror("reason");
1483         rename(buf[1], serialfile);
1484         goto err;
1485     }
1486     return 1;
1487  err:
1488     return 0;
1489 }
1490
1491 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1492 {
1493     BIGNUM *btmp;
1494     int ret = 0;
1495
1496     if (b)
1497         btmp = b;
1498     else
1499         btmp = BN_new();
1500
1501     if (btmp == NULL)
1502         return 0;
1503
1504     if (!BN_pseudo_rand(btmp, SERIAL_RAND_BITS, 0, 0))
1505         goto error;
1506     if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1507         goto error;
1508
1509     ret = 1;
1510
1511  error:
1512
1513     if (btmp != b)
1514         BN_free(btmp);
1515
1516     return ret;
1517 }
1518
1519 CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1520 {
1521     CA_DB *retdb = NULL;
1522     TXT_DB *tmpdb = NULL;
1523     BIO *in;
1524     CONF *dbattr_conf = NULL;
1525     char buf[BSIZE];
1526
1527     in = BIO_new_file(dbfile, "r");
1528     if (in == NULL) {
1529         ERR_print_errors(bio_err);
1530         goto err;
1531     }
1532     if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1533         goto err;
1534
1535 #ifndef OPENSSL_SYS_VMS
1536     BIO_snprintf(buf, sizeof buf, "%s.attr", dbfile);
1537 #else
1538     BIO_snprintf(buf, sizeof buf, "%s-attr", dbfile);
1539 #endif
1540     dbattr_conf = app_load_config(buf);
1541
1542     retdb = app_malloc(sizeof(*retdb), "new DB");
1543     retdb->db = tmpdb;
1544     tmpdb = NULL;
1545     if (db_attr)
1546         retdb->attributes = *db_attr;
1547     else {
1548         retdb->attributes.unique_subject = 1;
1549     }
1550
1551     if (dbattr_conf) {
1552         char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1553         if (p) {
1554             retdb->attributes.unique_subject = parse_yesno(p, 1);
1555         }
1556     }
1557
1558  err:
1559     NCONF_free(dbattr_conf);
1560     TXT_DB_free(tmpdb);
1561     BIO_free_all(in);
1562     return retdb;
1563 }
1564
1565 int index_index(CA_DB *db)
1566 {
1567     if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1568                              LHASH_HASH_FN(index_serial),
1569                              LHASH_COMP_FN(index_serial))) {
1570         BIO_printf(bio_err,
1571                    "error creating serial number index:(%ld,%ld,%ld)\n",
1572                    db->db->error, db->db->arg1, db->db->arg2);
1573         return 0;
1574     }
1575
1576     if (db->attributes.unique_subject
1577         && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1578                                 LHASH_HASH_FN(index_name),
1579                                 LHASH_COMP_FN(index_name))) {
1580         BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1581                    db->db->error, db->db->arg1, db->db->arg2);
1582         return 0;
1583     }
1584     return 1;
1585 }
1586
1587 int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1588 {
1589     char buf[3][BSIZE];
1590     BIO *out;
1591     int j;
1592
1593     j = strlen(dbfile) + strlen(suffix);
1594     if (j + 6 >= BSIZE) {
1595         BIO_printf(bio_err, "file name too long\n");
1596         goto err;
1597     }
1598 #ifndef OPENSSL_SYS_VMS
1599     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr", dbfile);
1600     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.attr.%s", dbfile, suffix);
1601     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, suffix);
1602 #else
1603     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr", dbfile);
1604     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-attr-%s", dbfile, suffix);
1605     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, suffix);
1606 #endif
1607     out = BIO_new_file(buf[0], "w");
1608     if (out == NULL) {
1609         perror(dbfile);
1610         BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1611         goto err;
1612     }
1613     j = TXT_DB_write(out, db->db);
1614     BIO_free(out);
1615     if (j <= 0)
1616         goto err;
1617
1618     out = BIO_new_file(buf[1], "w");
1619     if (out == NULL) {
1620         perror(buf[2]);
1621         BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1622         goto err;
1623     }
1624     BIO_printf(out, "unique_subject = %s\n",
1625                db->attributes.unique_subject ? "yes" : "no");
1626     BIO_free(out);
1627
1628     return 1;
1629  err:
1630     return 0;
1631 }
1632
1633 int rotate_index(const char *dbfile, const char *new_suffix,
1634                  const char *old_suffix)
1635 {
1636     char buf[5][BSIZE];
1637     int i, j;
1638
1639     i = strlen(dbfile) + strlen(old_suffix);
1640     j = strlen(dbfile) + strlen(new_suffix);
1641     if (i > j)
1642         j = i;
1643     if (j + 6 >= BSIZE) {
1644         BIO_printf(bio_err, "file name too long\n");
1645         goto err;
1646     }
1647 #ifndef OPENSSL_SYS_VMS
1648     j = BIO_snprintf(buf[4], sizeof buf[4], "%s.attr", dbfile);
1649     j = BIO_snprintf(buf[3], sizeof buf[3], "%s.attr.%s", dbfile, old_suffix);
1650     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr.%s", dbfile, new_suffix);
1651     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", dbfile, old_suffix);
1652     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, new_suffix);
1653 #else
1654     j = BIO_snprintf(buf[4], sizeof buf[4], "%s-attr", dbfile);
1655     j = BIO_snprintf(buf[3], sizeof buf[3], "%s-attr-%s", dbfile, old_suffix);
1656     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr-%s", dbfile, new_suffix);
1657     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", dbfile, old_suffix);
1658     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, new_suffix);
1659 #endif
1660     if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1661 #ifdef ENOTDIR
1662         && errno != ENOTDIR
1663 #endif
1664         ) {
1665         BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1666         perror("reason");
1667         goto err;
1668     }
1669     if (rename(buf[0], dbfile) < 0) {
1670         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1671         perror("reason");
1672         rename(buf[1], dbfile);
1673         goto err;
1674     }
1675     if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1676 #ifdef ENOTDIR
1677         && errno != ENOTDIR
1678 #endif
1679         ) {
1680         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1681         perror("reason");
1682         rename(dbfile, buf[0]);
1683         rename(buf[1], dbfile);
1684         goto err;
1685     }
1686     if (rename(buf[2], buf[4]) < 0) {
1687         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1688         perror("reason");
1689         rename(buf[3], buf[4]);
1690         rename(dbfile, buf[0]);
1691         rename(buf[1], dbfile);
1692         goto err;
1693     }
1694     return 1;
1695  err:
1696     return 0;
1697 }
1698
1699 void free_index(CA_DB *db)
1700 {
1701     if (db) {
1702         TXT_DB_free(db->db);
1703         OPENSSL_free(db);
1704     }
1705 }
1706
1707 int parse_yesno(const char *str, int def)
1708 {
1709     if (str) {
1710         switch (*str) {
1711         case 'f':              /* false */
1712         case 'F':              /* FALSE */
1713         case 'n':              /* no */
1714         case 'N':              /* NO */
1715         case '0':              /* 0 */
1716             return 0;
1717         case 't':              /* true */
1718         case 'T':              /* TRUE */
1719         case 'y':              /* yes */
1720         case 'Y':              /* YES */
1721         case '1':              /* 1 */
1722             return 1;
1723         }
1724     }
1725     return def;
1726 }
1727
1728 /*
1729  * name is expected to be in the format /type0=value0/type1=value1/type2=...
1730  * where characters may be escaped by \
1731  */
1732 X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1733 {
1734     int nextismulti = 0;
1735     char *work;
1736     X509_NAME *n;
1737
1738     if (*cp++ != '/')
1739         return NULL;
1740
1741     n = X509_NAME_new();
1742     if (n == NULL)
1743         return NULL;
1744     work = OPENSSL_strdup(cp);
1745     if (work == NULL)
1746         goto err;
1747
1748     while (*cp) {
1749         char *bp = work;
1750         char *typestr = bp;
1751         unsigned char *valstr;
1752         int nid;
1753         int ismulti = nextismulti;
1754         nextismulti = 0;
1755
1756         /* Collect the type */
1757         while (*cp && *cp != '=')
1758             *bp++ = *cp++;
1759         if (*cp == '\0') {
1760             BIO_printf(bio_err,
1761                     "%s: Hit end of string before finding the equals.\n",
1762                     opt_getprog());
1763             goto err;
1764         }
1765         *bp++ = '\0';
1766         ++cp;
1767
1768         /* Collect the value. */
1769         valstr = (unsigned char *)bp;
1770         for (; *cp && *cp != '/'; *bp++ = *cp++) {
1771             if (canmulti && *cp == '+') {
1772                 nextismulti = 1;
1773                 break;
1774             }
1775             if (*cp == '\\' && *++cp == '\0') {
1776                 BIO_printf(bio_err,
1777                         "%s: escape character at end of string\n",
1778                         opt_getprog());
1779                 goto err;
1780             }
1781         }
1782         *bp++ = '\0';
1783
1784         /* If not at EOS (must be + or /), move forward. */
1785         if (*cp)
1786             ++cp;
1787
1788         /* Parse */
1789         nid = OBJ_txt2nid(typestr);
1790         if (nid == NID_undef) {
1791             BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1792                       opt_getprog(), typestr);
1793             continue;
1794         }
1795         if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1796                                         valstr, strlen((char *)valstr),
1797                                         -1, ismulti ? -1 : 0))
1798             goto err;
1799     }
1800
1801     OPENSSL_free(work);
1802     return n;
1803
1804  err:
1805     X509_NAME_free(n);
1806     OPENSSL_free(work);
1807     return NULL;
1808 }
1809
1810 /*
1811  * Read whole contents of a BIO into an allocated memory buffer and return
1812  * it.
1813  */
1814
1815 int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1816 {
1817     BIO *mem;
1818     int len, ret;
1819     unsigned char tbuf[1024];
1820
1821     mem = BIO_new(BIO_s_mem());
1822     if (mem == NULL)
1823         return -1;
1824     for (;;) {
1825         if ((maxlen != -1) && maxlen < 1024)
1826             len = maxlen;
1827         else
1828             len = 1024;
1829         len = BIO_read(in, tbuf, len);
1830         if (len < 0) {
1831             BIO_free(mem);
1832             return -1;
1833         }
1834         if (len == 0)
1835             break;
1836         if (BIO_write(mem, tbuf, len) != len) {
1837             BIO_free(mem);
1838             return -1;
1839         }
1840         maxlen -= len;
1841
1842         if (maxlen == 0)
1843             break;
1844     }
1845     ret = BIO_get_mem_data(mem, (char **)out);
1846     BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1847     BIO_free(mem);
1848     return ret;
1849 }
1850
1851 int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1852 {
1853     int rv;
1854     char *stmp, *vtmp = NULL;
1855     stmp = OPENSSL_strdup(value);
1856     if (!stmp)
1857         return -1;
1858     vtmp = strchr(stmp, ':');
1859     if (vtmp) {
1860         *vtmp = 0;
1861         vtmp++;
1862     }
1863     rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1864     OPENSSL_free(stmp);
1865     return rv;
1866 }
1867
1868 static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1869 {
1870     X509_POLICY_NODE *node;
1871     int i;
1872
1873     BIO_printf(bio_err, "%s Policies:", name);
1874     if (nodes) {
1875         BIO_puts(bio_err, "\n");
1876         for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1877             node = sk_X509_POLICY_NODE_value(nodes, i);
1878             X509_POLICY_NODE_print(bio_err, node, 2);
1879         }
1880     } else {
1881         BIO_puts(bio_err, " <empty>\n");
1882     }
1883 }
1884
1885 void policies_print(X509_STORE_CTX *ctx)
1886 {
1887     X509_POLICY_TREE *tree;
1888     int explicit_policy;
1889     tree = X509_STORE_CTX_get0_policy_tree(ctx);
1890     explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1891
1892     BIO_printf(bio_err, "Require explicit Policy: %s\n",
1893                explicit_policy ? "True" : "False");
1894
1895     nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1896     nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1897 }
1898
1899 /*-
1900  * next_protos_parse parses a comma separated list of strings into a string
1901  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1902  *   outlen: (output) set to the length of the resulting buffer on success.
1903  *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1904  *   in: a NUL terminated string like "abc,def,ghi"
1905  *
1906  *   returns: a malloc'd buffer or NULL on failure.
1907  */
1908 unsigned char *next_protos_parse(size_t *outlen, const char *in)
1909 {
1910     size_t len;
1911     unsigned char *out;
1912     size_t i, start = 0;
1913
1914     len = strlen(in);
1915     if (len >= 65535)
1916         return NULL;
1917
1918     out = app_malloc(strlen(in) + 1, "NPN buffer");
1919     for (i = 0; i <= len; ++i) {
1920         if (i == len || in[i] == ',') {
1921             if (i - start > 255) {
1922                 OPENSSL_free(out);
1923                 return NULL;
1924             }
1925             out[start] = i - start;
1926             start = i + 1;
1927         } else {
1928             out[i + 1] = in[i];
1929         }
1930     }
1931
1932     *outlen = len + 1;
1933     return out;
1934 }
1935
1936 void print_cert_checks(BIO *bio, X509 *x,
1937                        const char *checkhost,
1938                        const char *checkemail, const char *checkip)
1939 {
1940     if (x == NULL)
1941         return;
1942     if (checkhost) {
1943         BIO_printf(bio, "Hostname %s does%s match certificate\n",
1944                    checkhost,
1945                    X509_check_host(x, checkhost, 0, 0, NULL) == 1
1946                        ? "" : " NOT");
1947     }
1948
1949     if (checkemail) {
1950         BIO_printf(bio, "Email %s does%s match certificate\n",
1951                    checkemail, X509_check_email(x, checkemail, 0, 0)
1952                    ? "" : " NOT");
1953     }
1954
1955     if (checkip) {
1956         BIO_printf(bio, "IP %s does%s match certificate\n",
1957                    checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
1958     }
1959 }
1960
1961 /* Get first http URL from a DIST_POINT structure */
1962
1963 static const char *get_dp_url(DIST_POINT *dp)
1964 {
1965     GENERAL_NAMES *gens;
1966     GENERAL_NAME *gen;
1967     int i, gtype;
1968     ASN1_STRING *uri;
1969     if (!dp->distpoint || dp->distpoint->type != 0)
1970         return NULL;
1971     gens = dp->distpoint->name.fullname;
1972     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
1973         gen = sk_GENERAL_NAME_value(gens, i);
1974         uri = GENERAL_NAME_get0_value(gen, &gtype);
1975         if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
1976             const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
1977             if (strncmp(uptr, "http://", 7) == 0)
1978                 return uptr;
1979         }
1980     }
1981     return NULL;
1982 }
1983
1984 /*
1985  * Look through a CRLDP structure and attempt to find an http URL to
1986  * downloads a CRL from.
1987  */
1988
1989 static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
1990 {
1991     int i;
1992     const char *urlptr = NULL;
1993     for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
1994         DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
1995         urlptr = get_dp_url(dp);
1996         if (urlptr)
1997             return load_crl(urlptr, FORMAT_HTTP);
1998     }
1999     return NULL;
2000 }
2001
2002 /*
2003  * Example of downloading CRLs from CRLDP: not usable for real world as it
2004  * always downloads, doesn't support non-blocking I/O and doesn't cache
2005  * anything.
2006  */
2007
2008 static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
2009 {
2010     X509 *x;
2011     STACK_OF(X509_CRL) *crls = NULL;
2012     X509_CRL *crl;
2013     STACK_OF(DIST_POINT) *crldp;
2014
2015     crls = sk_X509_CRL_new_null();
2016     if (!crls)
2017         return NULL;
2018     x = X509_STORE_CTX_get_current_cert(ctx);
2019     crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
2020     crl = load_crl_crldp(crldp);
2021     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2022     if (!crl) {
2023         sk_X509_CRL_free(crls);
2024         return NULL;
2025     }
2026     sk_X509_CRL_push(crls, crl);
2027     /* Try to download delta CRL */
2028     crldp = X509_get_ext_d2i(x, NID_freshest_crl, 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_push(crls, crl);
2033     return crls;
2034 }
2035
2036 void store_setup_crl_download(X509_STORE *st)
2037 {
2038     X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2039 }
2040
2041 /*
2042  * Platform-specific sections
2043  */
2044 #if defined(_WIN32)
2045 # ifdef fileno
2046 #  undef fileno
2047 #  define fileno(a) (int)_fileno(a)
2048 # endif
2049
2050 # include <windows.h>
2051 # include <tchar.h>
2052
2053 static int WIN32_rename(const char *from, const char *to)
2054 {
2055     TCHAR *tfrom = NULL, *tto;
2056     DWORD err;
2057     int ret = 0;
2058
2059     if (sizeof(TCHAR) == 1) {
2060         tfrom = (TCHAR *)from;
2061         tto = (TCHAR *)to;
2062     } else {                    /* UNICODE path */
2063
2064         size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2065         tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2066         if (tfrom == NULL)
2067             goto err;
2068         tto = tfrom + flen;
2069 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2070         if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2071 # endif
2072             for (i = 0; i < flen; i++)
2073                 tfrom[i] = (TCHAR)from[i];
2074 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2075         if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2076 # endif
2077             for (i = 0; i < tlen; i++)
2078                 tto[i] = (TCHAR)to[i];
2079     }
2080
2081     if (MoveFile(tfrom, tto))
2082         goto ok;
2083     err = GetLastError();
2084     if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2085         if (DeleteFile(tto) && MoveFile(tfrom, tto))
2086             goto ok;
2087         err = GetLastError();
2088     }
2089     if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2090         errno = ENOENT;
2091     else if (err == ERROR_ACCESS_DENIED)
2092         errno = EACCES;
2093     else
2094         errno = EINVAL;         /* we could map more codes... */
2095  err:
2096     ret = -1;
2097  ok:
2098     if (tfrom != NULL && tfrom != (TCHAR *)from)
2099         free(tfrom);
2100     return ret;
2101 }
2102 #endif
2103
2104 /* app_tminterval section */
2105 #if defined(_WIN32)
2106 double app_tminterval(int stop, int usertime)
2107 {
2108     FILETIME now;
2109     double ret = 0;
2110     static ULARGE_INTEGER tmstart;
2111     static int warning = 1;
2112 # ifdef _WIN32_WINNT
2113     static HANDLE proc = NULL;
2114
2115     if (proc == NULL) {
2116         if (check_winnt())
2117             proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2118                                GetCurrentProcessId());
2119         if (proc == NULL)
2120             proc = (HANDLE) - 1;
2121     }
2122
2123     if (usertime && proc != (HANDLE) - 1) {
2124         FILETIME junk;
2125         GetProcessTimes(proc, &junk, &junk, &junk, &now);
2126     } else
2127 # endif
2128     {
2129         SYSTEMTIME systime;
2130
2131         if (usertime && warning) {
2132             BIO_printf(bio_err, "To get meaningful results, run "
2133                        "this program on idle system.\n");
2134             warning = 0;
2135         }
2136         GetSystemTime(&systime);
2137         SystemTimeToFileTime(&systime, &now);
2138     }
2139
2140     if (stop == TM_START) {
2141         tmstart.u.LowPart = now.dwLowDateTime;
2142         tmstart.u.HighPart = now.dwHighDateTime;
2143     } else {
2144         ULARGE_INTEGER tmstop;
2145
2146         tmstop.u.LowPart = now.dwLowDateTime;
2147         tmstop.u.HighPart = now.dwHighDateTime;
2148
2149         ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2150     }
2151
2152     return (ret);
2153 }
2154 #elif defined(OPENSSL_SYSTEM_VXWORKS)
2155 # include <time.h>
2156
2157 double app_tminterval(int stop, int usertime)
2158 {
2159     double ret = 0;
2160 # ifdef CLOCK_REALTIME
2161     static struct timespec tmstart;
2162     struct timespec now;
2163 # else
2164     static unsigned long tmstart;
2165     unsigned long now;
2166 # endif
2167     static int warning = 1;
2168
2169     if (usertime && warning) {
2170         BIO_printf(bio_err, "To get meaningful results, run "
2171                    "this program on idle system.\n");
2172         warning = 0;
2173     }
2174 # ifdef CLOCK_REALTIME
2175     clock_gettime(CLOCK_REALTIME, &now);
2176     if (stop == TM_START)
2177         tmstart = now;
2178     else
2179         ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2180                - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2181 # else
2182     now = tickGet();
2183     if (stop == TM_START)
2184         tmstart = now;
2185     else
2186         ret = (now - tmstart) / (double)sysClkRateGet();
2187 # endif
2188     return (ret);
2189 }
2190
2191 #elif defined(OPENSSL_SYSTEM_VMS)
2192 # include <time.h>
2193 # include <times.h>
2194
2195 double app_tminterval(int stop, int usertime)
2196 {
2197     static clock_t tmstart;
2198     double ret = 0;
2199     clock_t now;
2200 # ifdef __TMS
2201     struct tms rus;
2202
2203     now = times(&rus);
2204     if (usertime)
2205         now = rus.tms_utime;
2206 # else
2207     if (usertime)
2208         now = clock();          /* sum of user and kernel times */
2209     else {
2210         struct timeval tv;
2211         gettimeofday(&tv, NULL);
2212         now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2213                         (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2214             );
2215     }
2216 # endif
2217     if (stop == TM_START)
2218         tmstart = now;
2219     else
2220         ret = (now - tmstart) / (double)(CLK_TCK);
2221
2222     return (ret);
2223 }
2224
2225 #elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2226 # include <sys/times.h>
2227
2228 double app_tminterval(int stop, int usertime)
2229 {
2230     double ret = 0;
2231     struct tms rus;
2232     clock_t now = times(&rus);
2233     static clock_t tmstart;
2234
2235     if (usertime)
2236         now = rus.tms_utime;
2237
2238     if (stop == TM_START) {
2239         tmstart = now;
2240     } else {
2241         long int tck = sysconf(_SC_CLK_TCK);
2242         ret = (now - tmstart) / (double)tck;
2243     }
2244
2245     return (ret);
2246 }
2247
2248 #else
2249 # include <sys/time.h>
2250 # include <sys/resource.h>
2251
2252 double app_tminterval(int stop, int usertime)
2253 {
2254     double ret = 0;
2255     struct rusage rus;
2256     struct timeval now;
2257     static struct timeval tmstart;
2258
2259     if (usertime)
2260         getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2261     else
2262         gettimeofday(&now, NULL);
2263
2264     if (stop == TM_START)
2265         tmstart = now;
2266     else
2267         ret = ((now.tv_sec + now.tv_usec * 1e-6)
2268                - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2269
2270     return ret;
2271 }
2272 #endif
2273
2274 int app_access(const char* name, int flag)
2275 {
2276 #ifdef _WIN32
2277     return _access(name, flag);
2278 #else
2279     return access(name, flag);
2280 #endif
2281 }
2282
2283 /* app_isdir section */
2284 #ifdef _WIN32
2285 int app_isdir(const char *name)
2286 {
2287     HANDLE hList;
2288     WIN32_FIND_DATA FileData;
2289 # if defined(UNICODE) || defined(_UNICODE)
2290     size_t i, len_0 = strlen(name) + 1;
2291
2292     if (len_0 > OSSL_NELEM(FileData.cFileName))
2293         return -1;
2294
2295 #  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2296     if (!MultiByteToWideChar
2297         (CP_ACP, 0, name, len_0, FileData.cFileName, len_0))
2298 #  endif
2299         for (i = 0; i < len_0; i++)
2300             FileData.cFileName[i] = (WCHAR)name[i];
2301
2302     hList = FindFirstFile(FileData.cFileName, &FileData);
2303 # else
2304     hList = FindFirstFile(name, &FileData);
2305 # endif
2306     if (hList == INVALID_HANDLE_VALUE)
2307         return -1;
2308     FindClose(hList);
2309     return ((FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
2310 }
2311 #else
2312 # include <sys/stat.h>
2313 # ifndef S_ISDIR
2314 #  if defined(_S_IFMT) && defined(_S_IFDIR)
2315 #   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2316 #  else
2317 #   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2318 #  endif
2319 # endif
2320
2321 int app_isdir(const char *name)
2322 {
2323 # if defined(S_ISDIR)
2324     struct stat st;
2325
2326     if (stat(name, &st) == 0)
2327         return S_ISDIR(st.st_mode);
2328     else
2329         return -1;
2330 # else
2331     return -1;
2332 # endif
2333 }
2334 #endif
2335
2336 /* raw_read|write section */
2337 #if defined(__VMS)
2338 # include "vms_term_sock.h"
2339 static int stdin_sock = -1;
2340
2341 static void close_stdin_sock(void)
2342 {
2343     TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2344 }
2345
2346 int fileno_stdin(void)
2347 {
2348     if (stdin_sock == -1) {
2349         TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2350         atexit(close_stdin_sock);
2351     }
2352
2353     return stdin_sock;
2354 }
2355 #else
2356 int fileno_stdin(void)
2357 {
2358     return fileno(stdin);
2359 }
2360 #endif
2361
2362 int fileno_stdout(void)
2363 {
2364     return fileno(stdout);
2365 }
2366
2367 #if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2368 int raw_read_stdin(void *buf, int siz)
2369 {
2370     DWORD n;
2371     if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2372         return (n);
2373     else
2374         return (-1);
2375 }
2376 #elif defined(__VMS)
2377 # include <sys/socket.h>
2378
2379 int raw_read_stdin(void *buf, int siz)
2380 {
2381     return recv(fileno_stdin(), buf, siz, 0);
2382 }
2383 #else
2384 int raw_read_stdin(void *buf, int siz)
2385 {
2386     return read(fileno_stdin(), buf, siz);
2387 }
2388 #endif
2389
2390 #if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2391 int raw_write_stdout(const void *buf, int siz)
2392 {
2393     DWORD n;
2394     if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2395         return (n);
2396     else
2397         return (-1);
2398 }
2399 #else
2400 int raw_write_stdout(const void *buf, int siz)
2401 {
2402     return write(fileno_stdout(), buf, siz);
2403 }
2404 #endif
2405
2406 /*
2407  * Centralized handling if input and output files with format specification
2408  * The format is meant to show what the input and output is supposed to be,
2409  * and is therefore a show of intent more than anything else.  However, it
2410  * does impact behavior on some platform, such as differentiating between
2411  * text and binary input/output on non-Unix platforms
2412  */
2413 static int istext(int format)
2414 {
2415     return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2416 }
2417
2418 BIO *dup_bio_in(int format)
2419 {
2420     return BIO_new_fp(stdin,
2421                       BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2422 }
2423
2424 BIO *dup_bio_out(int format)
2425 {
2426     BIO *b = BIO_new_fp(stdout,
2427                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2428 #ifdef OPENSSL_SYS_VMS
2429     if (istext(format))
2430         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2431 #endif
2432     return b;
2433 }
2434
2435 BIO *dup_bio_err(int format)
2436 {
2437     BIO *b = BIO_new_fp(stderr,
2438                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2439 #ifdef OPENSSL_SYS_VMS
2440     if (istext(format))
2441         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2442 #endif
2443     return b;
2444 }
2445
2446 void unbuffer(FILE *fp)
2447 {
2448 /*
2449  * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2450  * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2451  * However, we trust that the C RTL will never give us a FILE pointer
2452  * above the first 4 GB of memory, so we simply turn off the warning
2453  * temporarily.
2454  */
2455 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2456 # pragma environment save
2457 # pragma message disable maylosedata2
2458 #endif
2459     setbuf(fp, NULL);
2460 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2461 # pragma environment restore
2462 #endif
2463 }
2464
2465 static const char *modestr(char mode, int format)
2466 {
2467     OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2468
2469     switch (mode) {
2470     case 'a':
2471         return istext(format) ? "a" : "ab";
2472     case 'r':
2473         return istext(format) ? "r" : "rb";
2474     case 'w':
2475         return istext(format) ? "w" : "wb";
2476     }
2477     /* The assert above should make sure we never reach this point */
2478     return NULL;
2479 }
2480
2481 static const char *modeverb(char mode)
2482 {
2483     switch (mode) {
2484     case 'a':
2485         return "appending";
2486     case 'r':
2487         return "reading";
2488     case 'w':
2489         return "writing";
2490     }
2491     return "(doing something)";
2492 }
2493
2494 /*
2495  * Open a file for writing, owner-read-only.
2496  */
2497 BIO *bio_open_owner(const char *filename, int format, int private)
2498 {
2499     FILE *fp = NULL;
2500     BIO *b = NULL;
2501     int fd = -1, bflags, mode, textmode;
2502
2503     if (!private || filename == NULL || strcmp(filename, "-") == 0)
2504         return bio_open_default(filename, 'w', format);
2505
2506     mode = O_WRONLY;
2507 #ifdef O_CREAT
2508     mode |= O_CREAT;
2509 #endif
2510 #ifdef O_TRUNC
2511     mode |= O_TRUNC;
2512 #endif
2513     textmode = istext(format);
2514     if (!textmode) {
2515 #ifdef O_BINARY
2516         mode |= O_BINARY;
2517 #elif defined(_O_BINARY)
2518         mode |= _O_BINARY;
2519 #endif
2520     }
2521
2522 #ifdef OPENSSL_SYS_VMS
2523     /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2524      * it still needs to know that we're going binary, or fdopen()
2525      * will fail with "invalid argument"...  so we tell VMS what the
2526      * context is.
2527      */
2528     if (!textmode)
2529         fd = open(filename, mode, 0600, "ctx=bin");
2530     else
2531 #endif
2532         fd = open(filename, mode, 0600);
2533     if (fd < 0)
2534         goto err;
2535     fp = fdopen(fd, modestr('w', format));
2536     if (fp == NULL)
2537         goto err;
2538     bflags = BIO_CLOSE;
2539     if (textmode)
2540         bflags |= BIO_FP_TEXT;
2541     b = BIO_new_fp(fp, bflags);
2542     if (b)
2543         return b;
2544
2545  err:
2546     BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2547                opt_getprog(), filename, strerror(errno));
2548     ERR_print_errors(bio_err);
2549     /* If we have fp, then fdopen took over fd, so don't close both. */
2550     if (fp)
2551         fclose(fp);
2552     else if (fd >= 0)
2553         close(fd);
2554     return NULL;
2555 }
2556
2557 static BIO *bio_open_default_(const char *filename, char mode, int format,
2558                               int quiet)
2559 {
2560     BIO *ret;
2561
2562     if (filename == NULL || strcmp(filename, "-") == 0) {
2563         ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2564         if (quiet) {
2565             ERR_clear_error();
2566             return ret;
2567         }
2568         if (ret != NULL)
2569             return ret;
2570         BIO_printf(bio_err,
2571                    "Can't open %s, %s\n",
2572                    mode == 'r' ? "stdin" : "stdout", strerror(errno));
2573     } else {
2574         ret = BIO_new_file(filename, modestr(mode, format));
2575         if (quiet) {
2576             ERR_clear_error();
2577             return ret;
2578         }
2579         if (ret != NULL)
2580             return ret;
2581         BIO_printf(bio_err,
2582                    "Can't open %s for %s, %s\n",
2583                    filename, modeverb(mode), strerror(errno));
2584     }
2585     ERR_print_errors(bio_err);
2586     return NULL;
2587 }
2588
2589 BIO *bio_open_default(const char *filename, char mode, int format)
2590 {
2591     return bio_open_default_(filename, mode, format, 0);
2592 }
2593
2594 BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2595 {
2596     return bio_open_default_(filename, mode, format, 1);
2597 }
2598
2599 void wait_for_async(SSL *s)
2600 {
2601     /* On Windows select only works for sockets, so we simply don't wait  */
2602 #ifndef OPENSSL_SYS_WINDOWS
2603     int width = 0;
2604     fd_set asyncfds;
2605     OSSL_ASYNC_FD *fds;
2606     size_t numfds;
2607
2608     if (!SSL_get_all_async_fds(s, NULL, &numfds))
2609         return;
2610     if (numfds == 0)
2611         return;
2612     fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2613     if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2614         OPENSSL_free(fds);
2615     }
2616
2617     FD_ZERO(&asyncfds);
2618     while (numfds > 0) {
2619         if (width <= (int)*fds)
2620             width = (int)*fds + 1;
2621         openssl_fdset((int)*fds, &asyncfds);
2622         numfds--;
2623         fds++;
2624     }
2625     select(width, (void *)&asyncfds, NULL, NULL, NULL);
2626 #endif
2627 }
2628
2629 /* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2630 #if defined(OPENSSL_SYS_MSDOS)
2631 int has_stdin_waiting(void)
2632 {
2633 # if defined(OPENSSL_SYS_WINDOWS)
2634     HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2635     DWORD events = 0;
2636     INPUT_RECORD inputrec;
2637     DWORD insize = 1;
2638     BOOL peeked;
2639
2640     if (inhand == INVALID_HANDLE_VALUE) {
2641         return 0;
2642     }
2643
2644     peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2645     if (!peeked) {
2646         /* Probably redirected input? _kbhit() does not work in this case */
2647         if (!feof(stdin)) {
2648             return 1;
2649         }
2650         return 0;
2651     }
2652 # endif
2653     return _kbhit();
2654 }
2655 #endif
2656
2657 /* Corrupt a signature by modifying final byte */
2658 void corrupt_signature(const ASN1_STRING *signature)
2659 {
2660         unsigned char *s = signature->data;
2661         s[signature->length - 1] ^= 0x1;
2662 }
2663
2664 int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2665                    int days)
2666 {
2667     if (startdate == NULL || strcmp(startdate, "today") == 0) {
2668         if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2669             return 0;
2670     } else {
2671         if (!ASN1_TIME_set_string_X509(X509_getm_notBefore(x), startdate))
2672             return 0;
2673     }
2674     if (enddate == NULL) {
2675         if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2676             == NULL)
2677             return 0;
2678     } else if (!ASN1_TIME_set_string_X509(X509_getm_notAfter(x), enddate)) {
2679         return 0;
2680     }
2681     return 1;
2682 }
2683
2684 void make_uppercase(char *string)
2685 {
2686     int i;
2687
2688     for (i = 0; string[i] != '\0'; i++)
2689         string[i] = toupper((unsigned char)string[i]);
2690 }