apps/apps.c

   1 /*
   2  * Copyright 1995-2016 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
 147     return SSL_CTX_set_ctlog_list_file(ctx, path);
 148 }
 149
 150 #endif
 151
 152 int dump_cert_text(BIO *out, X509 *x)
 153 {
 154     char *p;
 155
 156     p = X509_NAME_oneline(X509_get_subject_name(x), NULL, 0);
 157     BIO_puts(out, "subject=");
 158     BIO_puts(out, p);
 159     OPENSSL_free(p);
 160
 161     p = X509_NAME_oneline(X509_get_issuer_name(x), NULL, 0);
 162     BIO_puts(out, "\nissuer=");
 163     BIO_puts(out, p);
 164     BIO_puts(out, "\n");
 165     OPENSSL_free(p);
 166
 167     return 0;
 168 }
 169
 170 #ifndef OPENSSL_NO_UI
 171 static int ui_open(UI *ui)
 172 {
 173     return UI_method_get_opener(UI_OpenSSL())(ui);
 174 }
 175
 176 static int ui_read(UI *ui, UI_STRING *uis)
 177 {
 178     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 179         && UI_get0_user_data(ui)) {
 180         switch (UI_get_string_type(uis)) {
 181         case UIT_PROMPT:
 182         case UIT_VERIFY:
 183             {
 184                 const char *password =
 185                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 186                 if (password && password[0] != '\0') {
 187                     UI_set_result(ui, uis, password);
 188                     return 1;
 189                 }
 190             }
 191             break;
 192         case UIT_NONE:
 193         case UIT_BOOLEAN:
 194         case UIT_INFO:
 195         case UIT_ERROR:
 196             break;
 197         }
 198     }
 199     return UI_method_get_reader(UI_OpenSSL())(ui, uis);
 200 }
 201
 202 static int ui_write(UI *ui, UI_STRING *uis)
 203 {
 204     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 205         && UI_get0_user_data(ui)) {
 206         switch (UI_get_string_type(uis)) {
 207         case UIT_PROMPT:
 208         case UIT_VERIFY:
 209             {
 210                 const char *password =
 211                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 212                 if (password && password[0] != '\0')
 213                     return 1;
 214             }
 215             break;
 216         case UIT_NONE:
 217         case UIT_BOOLEAN:
 218         case UIT_INFO:
 219         case UIT_ERROR:
 220             break;
 221         }
 222     }
 223     return UI_method_get_writer(UI_OpenSSL())(ui, uis);
 224 }
 225
 226 static int ui_close(UI *ui)
 227 {
 228     return UI_method_get_closer(UI_OpenSSL())(ui);
 229 }
 230
 231 int setup_ui_method(void)
 232 {
 233     ui_method = UI_create_method("OpenSSL application user interface");
 234     UI_method_set_opener(ui_method, ui_open);
 235     UI_method_set_reader(ui_method, ui_read);
 236     UI_method_set_writer(ui_method, ui_write);
 237     UI_method_set_closer(ui_method, ui_close);
 238     return 0;
 239 }
 240
 241 void destroy_ui_method(void)
 242 {
 243     if (ui_method) {
 244         UI_destroy_method(ui_method);
 245         ui_method = NULL;
 246     }
 247 }
 248 #endif
 249
 250 int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_tmp)
 251 {
 252     int res = 0;
 253 #ifndef OPENSSL_NO_UI
 254     UI *ui = NULL;
 255     const char *prompt_info = NULL;
 256 #endif
 257     const char *password = NULL;
 258     PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
 259
 260     if (cb_data) {
 261         if (cb_data->password)
 262             password = cb_data->password;
 263 #ifndef OPENSSL_NO_UI
 264         if (cb_data->prompt_info)
 265             prompt_info = cb_data->prompt_info;
 266 #endif
 267     }
 268
 269     if (password) {
 270         res = strlen(password);
 271         if (res > bufsiz)
 272             res = bufsiz;
 273         memcpy(buf, password, res);
 274         return res;
 275     }
 276
 277 #ifndef OPENSSL_NO_UI
 278     ui = UI_new_method(ui_method);
 279     if (ui) {
 280         int ok = 0;
 281         char *buff = NULL;
 282         int ui_flags = 0;
 283         char *prompt;
 284
 285         prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
 286         if (!prompt) {
 287             BIO_printf(bio_err, "Out of memory\n");
 288             UI_free(ui);
 289             return 0;
 290         }
 291
 292         ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
 293         UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
 294
 295         if (ok >= 0)
 296             ok = UI_add_input_string(ui, prompt, ui_flags, buf,
 297                                      PW_MIN_LENGTH, bufsiz - 1);
 298         if (ok >= 0 && verify) {
 299             buff = app_malloc(bufsiz, "password buffer");
 300             ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
 301                                       PW_MIN_LENGTH, bufsiz - 1, buf);
 302         }
 303         if (ok >= 0)
 304             do {
 305                 ok = UI_process(ui);
 306             }
 307             while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
 308
 309         OPENSSL_clear_free(buff, (unsigned int)bufsiz);
 310
 311         if (ok >= 0)
 312             res = strlen(buf);
 313         if (ok == -1) {
 314             BIO_printf(bio_err, "User interface error\n");
 315             ERR_print_errors(bio_err);
 316             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 317             res = 0;
 318         }
 319         if (ok == -2) {
 320             BIO_printf(bio_err, "aborted!\n");
 321             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 322             res = 0;
 323         }
 324         UI_free(ui);
 325         OPENSSL_free(prompt);
 326     }
 327 #endif
 328     return res;
 329 }
 330
 331 static char *app_get_pass(const char *arg, int keepbio);
 332
 333 int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
 334 {
 335     int same;
 336     if (!arg2 || !arg1 || strcmp(arg1, arg2))
 337         same = 0;
 338     else
 339         same = 1;
 340     if (arg1) {
 341         *pass1 = app_get_pass(arg1, same);
 342         if (!*pass1)
 343             return 0;
 344     } else if (pass1)
 345         *pass1 = NULL;
 346     if (arg2) {
 347         *pass2 = app_get_pass(arg2, same ? 2 : 0);
 348         if (!*pass2)
 349             return 0;
 350     } else if (pass2)
 351         *pass2 = NULL;
 352     return 1;
 353 }
 354
 355 static char *app_get_pass(const char *arg, int keepbio)
 356 {
 357     char *tmp, tpass[APP_PASS_LEN];
 358     static BIO *pwdbio = NULL;
 359     int i;
 360
 361     if (strncmp(arg, "pass:", 5) == 0)
 362         return OPENSSL_strdup(arg + 5);
 363     if (strncmp(arg, "env:", 4) == 0) {
 364         tmp = getenv(arg + 4);
 365         if (!tmp) {
 366             BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
 367             return NULL;
 368         }
 369         return OPENSSL_strdup(tmp);
 370     }
 371     if (!keepbio || !pwdbio) {
 372         if (strncmp(arg, "file:", 5) == 0) {
 373             pwdbio = BIO_new_file(arg + 5, "r");
 374             if (!pwdbio) {
 375                 BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
 376                 return NULL;
 377             }
 378 #if !defined(_WIN32)
 379             /*
 380              * Under _WIN32, which covers even Win64 and CE, file
 381              * descriptors referenced by BIO_s_fd are not inherited
 382              * by child process and therefore below is not an option.
 383              * It could have been an option if bss_fd.c was operating
 384              * on real Windows descriptors, such as those obtained
 385              * with CreateFile.
 386              */
 387         } else if (strncmp(arg, "fd:", 3) == 0) {
 388             BIO *btmp;
 389             i = atoi(arg + 3);
 390             if (i >= 0)
 391                 pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 392             if ((i < 0) || !pwdbio) {
 393                 BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
 394                 return NULL;
 395             }
 396             /*
 397              * Can't do BIO_gets on an fd BIO so add a buffering BIO
 398              */
 399             btmp = BIO_new(BIO_f_buffer());
 400             pwdbio = BIO_push(btmp, pwdbio);
 401 #endif
 402         } else if (strcmp(arg, "stdin") == 0) {
 403             pwdbio = dup_bio_in(FORMAT_TEXT);
 404             if (!pwdbio) {
 405                 BIO_printf(bio_err, "Can't open BIO for stdin\n");
 406                 return NULL;
 407             }
 408         } else {
 409             BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
 410             return NULL;
 411         }
 412     }
 413     i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 414     if (keepbio != 1) {
 415         BIO_free_all(pwdbio);
 416         pwdbio = NULL;
 417     }
 418     if (i <= 0) {
 419         BIO_printf(bio_err, "Error reading password from BIO\n");
 420         return NULL;
 421     }
 422     tmp = strchr(tpass, '\n');
 423     if (tmp)
 424         *tmp = 0;
 425     return OPENSSL_strdup(tpass);
 426 }
 427
 428 static CONF *app_load_config_(BIO *in, const char *filename)
 429 {
 430     long errorline = -1;
 431     CONF *conf;
 432     int i;
 433
 434     conf = NCONF_new(NULL);
 435     i = NCONF_load_bio(conf, in, &errorline);
 436     if (i > 0)
 437         return conf;
 438
 439     if (errorline <= 0)
 440         BIO_printf(bio_err, "%s: Can't load config file \"%s\"\n",
 441                    opt_getprog(), filename);
 442     else
 443         BIO_printf(bio_err, "%s: Error on line %ld of config file \"%s\"\n",
 444                    opt_getprog(), errorline, filename);
 445     NCONF_free(conf);
 446     return NULL;
 447 }
 448 CONF *app_load_config(const char *filename)
 449 {
 450     BIO *in;
 451     CONF *conf;
 452
 453     in = bio_open_default(filename, 'r', FORMAT_TEXT);
 454     if (in == NULL)
 455         return NULL;
 456
 457     conf = app_load_config_(in, filename);
 458     BIO_free(in);
 459     return conf;
 460 }
 461 CONF *app_load_config_quiet(const char *filename)
 462 {
 463     BIO *in;
 464     CONF *conf;
 465
 466     in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
 467     if (in == NULL)
 468         return NULL;
 469
 470     conf = app_load_config_(in, filename);
 471     BIO_free(in);
 472     return conf;
 473 }
 474
 475 int app_load_modules(const CONF *config)
 476 {
 477     CONF *to_free = NULL;
 478
 479     if (config == NULL)
 480         config = to_free = app_load_config_quiet(default_config_file);
 481     if (config == NULL)
 482         return 1;
 483
 484     if (CONF_modules_load(config, NULL, 0) <= 0) {
 485         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
 486         ERR_print_errors(bio_err);
 487         NCONF_free(to_free);
 488         return 0;
 489     }
 490     NCONF_free(to_free);
 491     return 1;
 492 }
 493
 494 int add_oid_section(CONF *conf)
 495 {
 496     char *p;
 497     STACK_OF(CONF_VALUE) *sktmp;
 498     CONF_VALUE *cnf;
 499     int i;
 500
 501     if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
 502         ERR_clear_error();
 503         return 1;
 504     }
 505     if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
 506         BIO_printf(bio_err, "problem loading oid section %s\n", p);
 507         return 0;
 508     }
 509     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 510         cnf = sk_CONF_VALUE_value(sktmp, i);
 511         if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 512             BIO_printf(bio_err, "problem creating object %s=%s\n",
 513                        cnf->name, cnf->value);
 514             return 0;
 515         }
 516     }
 517     return 1;
 518 }
 519
 520 static int load_pkcs12(BIO *in, const char *desc,
 521                        pem_password_cb *pem_cb, void *cb_data,
 522                        EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 523 {
 524     const char *pass;
 525     char tpass[PEM_BUFSIZE];
 526     int len, ret = 0;
 527     PKCS12 *p12;
 528     p12 = d2i_PKCS12_bio(in, NULL);
 529     if (p12 == NULL) {
 530         BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
 531         goto die;
 532     }
 533     /* See if an empty password will do */
 534     if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0))
 535         pass = "";
 536     else {
 537         if (!pem_cb)
 538             pem_cb = (pem_password_cb *)password_callback;
 539         len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
 540         if (len < 0) {
 541             BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
 542             goto die;
 543         }
 544         if (len < PEM_BUFSIZE)
 545             tpass[len] = 0;
 546         if (!PKCS12_verify_mac(p12, tpass, len)) {
 547             BIO_printf(bio_err,
 548                        "Mac verify error (wrong password?) in PKCS12 file for %s\n",
 549                        desc);
 550             goto die;
 551         }
 552         pass = tpass;
 553     }
 554     ret = PKCS12_parse(p12, pass, pkey, cert, ca);
 555  die:
 556     PKCS12_free(p12);
 557     return ret;
 558 }
 559
 560 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 561 static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
 562 {
 563     char *host = NULL, *port = NULL, *path = NULL;
 564     BIO *bio = NULL;
 565     OCSP_REQ_CTX *rctx = NULL;
 566     int use_ssl, rv = 0;
 567     if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
 568         goto err;
 569     if (use_ssl) {
 570         BIO_puts(bio_err, "https not supported\n");
 571         goto err;
 572     }
 573     bio = BIO_new_connect(host);
 574     if (!bio || !BIO_set_conn_port(bio, port))
 575         goto err;
 576     rctx = OCSP_REQ_CTX_new(bio, 1024);
 577     if (rctx == NULL)
 578         goto err;
 579     if (!OCSP_REQ_CTX_http(rctx, "GET", path))
 580         goto err;
 581     if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
 582         goto err;
 583     if (pcert) {
 584         do {
 585             rv = X509_http_nbio(rctx, pcert);
 586         } while (rv == -1);
 587     } else {
 588         do {
 589             rv = X509_CRL_http_nbio(rctx, pcrl);
 590         } while (rv == -1);
 591     }
 592
 593  err:
 594     OPENSSL_free(host);
 595     OPENSSL_free(path);
 596     OPENSSL_free(port);
 597     if (bio)
 598         BIO_free_all(bio);
 599     OCSP_REQ_CTX_free(rctx);
 600     if (rv != 1) {
 601         BIO_printf(bio_err, "Error loading %s from %s\n",
 602                    pcert ? "certificate" : "CRL", url);
 603         ERR_print_errors(bio_err);
 604     }
 605     return rv;
 606 }
 607 #endif
 608
 609 X509 *load_cert(const char *file, int format, const char *cert_descrip)
 610 {
 611     X509 *x = NULL;
 612     BIO *cert;
 613
 614     if (format == FORMAT_HTTP) {
 615 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 616         load_cert_crl_http(file, &x, NULL);
 617 #endif
 618         return x;
 619     }
 620
 621     if (file == NULL) {
 622         unbuffer(stdin);
 623         cert = dup_bio_in(format);
 624     } else
 625         cert = bio_open_default(file, 'r', format);
 626     if (cert == NULL)
 627         goto end;
 628
 629     if (format == FORMAT_ASN1)
 630         x = d2i_X509_bio(cert, NULL);
 631     else if (format == FORMAT_PEM)
 632         x = PEM_read_bio_X509_AUX(cert, NULL,
 633                                   (pem_password_cb *)password_callback, NULL);
 634     else if (format == FORMAT_PKCS12) {
 635         if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
 636             goto end;
 637     } else {
 638         BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
 639         goto end;
 640     }
 641  end:
 642     if (x == NULL) {
 643         BIO_printf(bio_err, "unable to load certificate\n");
 644         ERR_print_errors(bio_err);
 645     }
 646     BIO_free(cert);
 647     return (x);
 648 }
 649
 650 X509_CRL *load_crl(const char *infile, int format)
 651 {
 652     X509_CRL *x = NULL;
 653     BIO *in = NULL;
 654
 655     if (format == FORMAT_HTTP) {
 656 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 657         load_cert_crl_http(infile, NULL, &x);
 658 #endif
 659         return x;
 660     }
 661
 662     in = bio_open_default(infile, 'r', format);
 663     if (in == NULL)
 664         goto end;
 665     if (format == FORMAT_ASN1)
 666         x = d2i_X509_CRL_bio(in, NULL);
 667     else if (format == FORMAT_PEM)
 668         x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 669     else {
 670         BIO_printf(bio_err, "bad input format specified for input crl\n");
 671         goto end;
 672     }
 673     if (x == NULL) {
 674         BIO_printf(bio_err, "unable to load CRL\n");
 675         ERR_print_errors(bio_err);
 676         goto end;
 677     }
 678
 679  end:
 680     BIO_free(in);
 681     return (x);
 682 }
 683
 684 EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
 685                    const char *pass, ENGINE *e, const char *key_descrip)
 686 {
 687     BIO *key = NULL;
 688     EVP_PKEY *pkey = NULL;
 689     PW_CB_DATA cb_data;
 690
 691     cb_data.password = pass;
 692     cb_data.prompt_info = file;
 693
 694     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 695         BIO_printf(bio_err, "no keyfile specified\n");
 696         goto end;
 697     }
 698     if (format == FORMAT_ENGINE) {
 699         if (e == NULL)
 700             BIO_printf(bio_err, "no engine specified\n");
 701         else {
 702 #ifndef OPENSSL_NO_ENGINE
 703             if (ENGINE_init(e)) {
 704                 pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
 705                 ENGINE_finish(e);
 706             }
 707             if (pkey == NULL) {
 708                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 709                 ERR_print_errors(bio_err);
 710             }
 711 #else
 712             BIO_printf(bio_err, "engines not supported\n");
 713 #endif
 714         }
 715         goto end;
 716     }
 717     if (file == NULL && maybe_stdin) {
 718         unbuffer(stdin);
 719         key = dup_bio_in(format);
 720     } else
 721         key = bio_open_default(file, 'r', format);
 722     if (key == NULL)
 723         goto end;
 724     if (format == FORMAT_ASN1) {
 725         pkey = d2i_PrivateKey_bio(key, NULL);
 726     } else if (format == FORMAT_PEM) {
 727         pkey = PEM_read_bio_PrivateKey(key, NULL,
 728                                        (pem_password_cb *)password_callback,
 729                                        &cb_data);
 730     }
 731     else if (format == FORMAT_PKCS12) {
 732         if (!load_pkcs12(key, key_descrip,
 733                          (pem_password_cb *)password_callback, &cb_data,
 734                          &pkey, NULL, NULL))
 735             goto end;
 736     }
 737 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
 738     else if (format == FORMAT_MSBLOB)
 739         pkey = b2i_PrivateKey_bio(key);
 740     else if (format == FORMAT_PVK)
 741         pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
 742                            &cb_data);
 743 #endif
 744     else {
 745         BIO_printf(bio_err, "bad input format specified for key file\n");
 746         goto end;
 747     }
 748  end:
 749     BIO_free(key);
 750     if (pkey == NULL) {
 751         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 752         ERR_print_errors(bio_err);
 753     }
 754     return (pkey);
 755 }
 756
 757 EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
 758                       const char *pass, ENGINE *e, const char *key_descrip)
 759 {
 760     BIO *key = NULL;
 761     EVP_PKEY *pkey = NULL;
 762     PW_CB_DATA cb_data;
 763
 764     cb_data.password = pass;
 765     cb_data.prompt_info = file;
 766
 767     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 768         BIO_printf(bio_err, "no keyfile specified\n");
 769         goto end;
 770     }
 771     if (format == FORMAT_ENGINE) {
 772         if (e == NULL)
 773             BIO_printf(bio_err, "no engine specified\n");
 774         else {
 775 #ifndef OPENSSL_NO_ENGINE
 776             pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
 777             if (pkey == NULL) {
 778                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 779                 ERR_print_errors(bio_err);
 780             }
 781 #else
 782             BIO_printf(bio_err, "engines not supported\n");
 783 #endif
 784         }
 785         goto end;
 786     }
 787     if (file == NULL && maybe_stdin) {
 788         unbuffer(stdin);
 789         key = dup_bio_in(format);
 790     } else
 791         key = bio_open_default(file, 'r', format);
 792     if (key == NULL)
 793         goto end;
 794     if (format == FORMAT_ASN1) {
 795         pkey = d2i_PUBKEY_bio(key, NULL);
 796     }
 797     else if (format == FORMAT_ASN1RSA) {
 798 #ifndef OPENSSL_NO_RSA
 799         RSA *rsa;
 800         rsa = d2i_RSAPublicKey_bio(key, NULL);
 801         if (rsa) {
 802             pkey = EVP_PKEY_new();
 803             if (pkey != NULL)
 804                 EVP_PKEY_set1_RSA(pkey, rsa);
 805             RSA_free(rsa);
 806         } else
 807 #else
 808         BIO_printf(bio_err, "RSA keys not supported\n");
 809 #endif
 810             pkey = NULL;
 811     } else if (format == FORMAT_PEMRSA) {
 812 #ifndef OPENSSL_NO_RSA
 813         RSA *rsa;
 814         rsa = PEM_read_bio_RSAPublicKey(key, NULL,
 815                                         (pem_password_cb *)password_callback,
 816                                         &cb_data);
 817         if (rsa != NULL) {
 818             pkey = EVP_PKEY_new();
 819             if (pkey != NULL)
 820                 EVP_PKEY_set1_RSA(pkey, rsa);
 821             RSA_free(rsa);
 822         } else
 823 #else
 824         BIO_printf(bio_err, "RSA keys not supported\n");
 825 #endif
 826             pkey = NULL;
 827     }
 828     else if (format == FORMAT_PEM) {
 829         pkey = PEM_read_bio_PUBKEY(key, NULL,
 830                                    (pem_password_cb *)password_callback,
 831                                    &cb_data);
 832     }
 833 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
 834     else if (format == FORMAT_MSBLOB)
 835         pkey = b2i_PublicKey_bio(key);
 836 #endif
 837  end:
 838     BIO_free(key);
 839     if (pkey == NULL)
 840         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 841     return (pkey);
 842 }
 843
 844 static int load_certs_crls(const char *file, int format,
 845                            const char *pass, const char *desc,
 846                            STACK_OF(X509) **pcerts,
 847                            STACK_OF(X509_CRL) **pcrls)
 848 {
 849     int i;
 850     BIO *bio;
 851     STACK_OF(X509_INFO) *xis = NULL;
 852     X509_INFO *xi;
 853     PW_CB_DATA cb_data;
 854     int rv = 0;
 855
 856     cb_data.password = pass;
 857     cb_data.prompt_info = file;
 858
 859     if (format != FORMAT_PEM) {
 860         BIO_printf(bio_err, "bad input format specified for %s\n", desc);
 861         return 0;
 862     }
 863
 864     bio = bio_open_default(file, 'r', FORMAT_PEM);
 865     if (bio == NULL)
 866         return 0;
 867
 868     xis = PEM_X509_INFO_read_bio(bio, NULL,
 869                                  (pem_password_cb *)password_callback,
 870                                  &cb_data);
 871
 872     BIO_free(bio);
 873
 874     if (pcerts && *pcerts == NULL) {
 875         *pcerts = sk_X509_new_null();
 876         if (!*pcerts)
 877             goto end;
 878     }
 879
 880     if (pcrls && *pcrls == NULL) {
 881         *pcrls = sk_X509_CRL_new_null();
 882         if (!*pcrls)
 883             goto end;
 884     }
 885
 886     for (i = 0; i < sk_X509_INFO_num(xis); i++) {
 887         xi = sk_X509_INFO_value(xis, i);
 888         if (xi->x509 && pcerts) {
 889             if (!sk_X509_push(*pcerts, xi->x509))
 890                 goto end;
 891             xi->x509 = NULL;
 892         }
 893         if (xi->crl && pcrls) {
 894             if (!sk_X509_CRL_push(*pcrls, xi->crl))
 895                 goto end;
 896             xi->crl = NULL;
 897         }
 898     }
 899
 900     if (pcerts && sk_X509_num(*pcerts) > 0)
 901         rv = 1;
 902
 903     if (pcrls && sk_X509_CRL_num(*pcrls) > 0)
 904         rv = 1;
 905
 906  end:
 907
 908     sk_X509_INFO_pop_free(xis, X509_INFO_free);
 909
 910     if (rv == 0) {
 911         if (pcerts) {
 912             sk_X509_pop_free(*pcerts, X509_free);
 913             *pcerts = NULL;
 914         }
 915         if (pcrls) {
 916             sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
 917             *pcrls = NULL;
 918         }
 919         BIO_printf(bio_err, "unable to load %s\n",
 920                    pcerts ? "certificates" : "CRLs");
 921         ERR_print_errors(bio_err);
 922     }
 923     return rv;
 924 }
 925
 926 void* app_malloc(int sz, const char *what)
 927 {
 928     void *vp = OPENSSL_malloc(sz);
 929
 930     if (vp == NULL) {
 931         BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
 932                 opt_getprog(), sz, what);
 933         ERR_print_errors(bio_err);
 934         exit(1);
 935     }
 936     return vp;
 937 }
 938
 939 /*
 940  * Initialize or extend, if *certs != NULL, a certificate stack.
 941  */
 942 int load_certs(const char *file, STACK_OF(X509) **certs, int format,
 943                const char *pass, const char *desc)
 944 {
 945     return load_certs_crls(file, format, pass, desc, certs, NULL);
 946 }
 947
 948 /*
 949  * Initialize or extend, if *crls != NULL, a certificate stack.
 950  */
 951 int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
 952               const char *pass, const char *desc)
 953 {
 954     return load_certs_crls(file, format, pass, desc, NULL, crls);
 955 }
 956
 957 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 958 /* Return error for unknown extensions */
 959 #define X509V3_EXT_DEFAULT              0
 960 /* Print error for unknown extensions */
 961 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 962 /* ASN1 parse unknown extensions */
 963 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 964 /* BIO_dump unknown extensions */
 965 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 966
 967 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 968                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 969
 970 int set_cert_ex(unsigned long *flags, const char *arg)
 971 {
 972     static const NAME_EX_TBL cert_tbl[] = {
 973         {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
 974         {"ca_default", X509_FLAG_CA, 0xffffffffl},
 975         {"no_header", X509_FLAG_NO_HEADER, 0},
 976         {"no_version", X509_FLAG_NO_VERSION, 0},
 977         {"no_serial", X509_FLAG_NO_SERIAL, 0},
 978         {"no_signame", X509_FLAG_NO_SIGNAME, 0},
 979         {"no_validity", X509_FLAG_NO_VALIDITY, 0},
 980         {"no_subject", X509_FLAG_NO_SUBJECT, 0},
 981         {"no_issuer", X509_FLAG_NO_ISSUER, 0},
 982         {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
 983         {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
 984         {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
 985         {"no_aux", X509_FLAG_NO_AUX, 0},
 986         {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
 987         {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
 988         {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 989         {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 990         {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 991         {NULL, 0, 0}
 992     };
 993     return set_multi_opts(flags, arg, cert_tbl);
 994 }
 995
 996 int set_name_ex(unsigned long *flags, const char *arg)
 997 {
 998     static const NAME_EX_TBL ex_tbl[] = {
 999         {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1000         {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
1001         {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1002         {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1003         {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1004         {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1005         {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1006         {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1007         {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1008         {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1009         {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1010         {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1011         {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1012         {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1013         {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1014         {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1015         {"dn_rev", XN_FLAG_DN_REV, 0},
1016         {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1017         {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1018         {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1019         {"align", XN_FLAG_FN_ALIGN, 0},
1020         {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1021         {"space_eq", XN_FLAG_SPC_EQ, 0},
1022         {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1023         {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1024         {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1025         {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1026         {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1027         {NULL, 0, 0}
1028     };
1029     if (set_multi_opts(flags, arg, ex_tbl) == 0)
1030         return 0;
1031     if ((*flags & XN_FLAG_SEP_MASK) == 0)
1032         *flags |= XN_FLAG_SEP_CPLUS_SPC;
1033     return 1;
1034 }
1035
1036 int set_ext_copy(int *copy_type, const char *arg)
1037 {
1038     if (strcasecmp(arg, "none") == 0)
1039         *copy_type = EXT_COPY_NONE;
1040     else if (strcasecmp(arg, "copy") == 0)
1041         *copy_type = EXT_COPY_ADD;
1042     else if (strcasecmp(arg, "copyall") == 0)
1043         *copy_type = EXT_COPY_ALL;
1044     else
1045         return 0;
1046     return 1;
1047 }
1048
1049 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1050 {
1051     STACK_OF(X509_EXTENSION) *exts = NULL;
1052     X509_EXTENSION *ext, *tmpext;
1053     ASN1_OBJECT *obj;
1054     int i, idx, ret = 0;
1055     if (!x || !req || (copy_type == EXT_COPY_NONE))
1056         return 1;
1057     exts = X509_REQ_get_extensions(req);
1058
1059     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1060         ext = sk_X509_EXTENSION_value(exts, i);
1061         obj = X509_EXTENSION_get_object(ext);
1062         idx = X509_get_ext_by_OBJ(x, obj, -1);
1063         /* Does extension exist? */
1064         if (idx != -1) {
1065             /* If normal copy don't override existing extension */
1066             if (copy_type == EXT_COPY_ADD)
1067                 continue;
1068             /* Delete all extensions of same type */
1069             do {
1070                 tmpext = X509_get_ext(x, idx);
1071                 X509_delete_ext(x, idx);
1072                 X509_EXTENSION_free(tmpext);
1073                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1074             } while (idx != -1);
1075         }
1076         if (!X509_add_ext(x, ext, -1))
1077             goto end;
1078     }
1079
1080     ret = 1;
1081
1082  end:
1083
1084     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1085
1086     return ret;
1087 }
1088
1089 static int set_multi_opts(unsigned long *flags, const char *arg,
1090                           const NAME_EX_TBL * in_tbl)
1091 {
1092     STACK_OF(CONF_VALUE) *vals;
1093     CONF_VALUE *val;
1094     int i, ret = 1;
1095     if (!arg)
1096         return 0;
1097     vals = X509V3_parse_list(arg);
1098     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1099         val = sk_CONF_VALUE_value(vals, i);
1100         if (!set_table_opts(flags, val->name, in_tbl))
1101             ret = 0;
1102     }
1103     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1104     return ret;
1105 }
1106
1107 static int set_table_opts(unsigned long *flags, const char *arg,
1108                           const NAME_EX_TBL * in_tbl)
1109 {
1110     char c;
1111     const NAME_EX_TBL *ptbl;
1112     c = arg[0];
1113
1114     if (c == '-') {
1115         c = 0;
1116         arg++;
1117     } else if (c == '+') {
1118         c = 1;
1119         arg++;
1120     } else
1121         c = 1;
1122
1123     for (ptbl = in_tbl; ptbl->name; ptbl++) {
1124         if (strcasecmp(arg, ptbl->name) == 0) {
1125             *flags &= ~ptbl->mask;
1126             if (c)
1127                 *flags |= ptbl->flag;
1128             else
1129                 *flags &= ~ptbl->flag;
1130             return 1;
1131         }
1132     }
1133     return 0;
1134 }
1135
1136 void print_name(BIO *out, const char *title, X509_NAME *nm,
1137                 unsigned long lflags)
1138 {
1139     char *buf;
1140     char mline = 0;
1141     int indent = 0;
1142
1143     if (title)
1144         BIO_puts(out, title);
1145     if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1146         mline = 1;
1147         indent = 4;
1148     }
1149     if (lflags == XN_FLAG_COMPAT) {
1150         buf = X509_NAME_oneline(nm, 0, 0);
1151         BIO_puts(out, buf);
1152         BIO_puts(out, "\n");
1153         OPENSSL_free(buf);
1154     } else {
1155         if (mline)
1156             BIO_puts(out, "\n");
1157         X509_NAME_print_ex(out, nm, indent, lflags);
1158         BIO_puts(out, "\n");
1159     }
1160 }
1161
1162 void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1163                       int len, unsigned char *buffer)
1164 {
1165     BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1166     if (BN_is_zero(in))
1167         BIO_printf(out, "\n\t0x00");
1168     else {
1169         int i, l;
1170
1171         l = BN_bn2bin(in, buffer);
1172         for (i = 0; i < l; i++) {
1173             if ((i % 10) == 0)
1174                 BIO_printf(out, "\n\t");
1175             if (i < l - 1)
1176                 BIO_printf(out, "0x%02X, ", buffer[i]);
1177             else
1178                 BIO_printf(out, "0x%02X", buffer[i]);
1179         }
1180     }
1181     BIO_printf(out, "\n    };\n");
1182 }
1183 void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1184 {
1185     int i;
1186
1187     BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1188     for (i = 0; i < len; i++) {
1189         if ((i % 10) == 0)
1190             BIO_printf(out, "\n    ");
1191         if (i < len - 1)
1192             BIO_printf(out, "0x%02X, ", d[i]);
1193         else
1194             BIO_printf(out, "0x%02X", d[i]);
1195     }
1196     BIO_printf(out, "\n};\n");
1197 }
1198
1199 X509_STORE *setup_verify(const char *CAfile, const char *CApath, int noCAfile, int noCApath)
1200 {
1201     X509_STORE *store = X509_STORE_new();
1202     X509_LOOKUP *lookup;
1203
1204     if (store == NULL)
1205         goto end;
1206
1207     if (CAfile != NULL || !noCAfile) {
1208         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1209         if (lookup == NULL)
1210             goto end;
1211         if (CAfile) {
1212             if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1213                 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1214                 goto end;
1215             }
1216         } else
1217             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1218     }
1219
1220     if (CApath != NULL || !noCApath) {
1221         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1222         if (lookup == NULL)
1223             goto end;
1224         if (CApath) {
1225             if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1226                 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1227                 goto end;
1228             }
1229         } else
1230             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1231     }
1232
1233     ERR_clear_error();
1234     return store;
1235  end:
1236     X509_STORE_free(store);
1237     return NULL;
1238 }
1239
1240 #ifndef OPENSSL_NO_ENGINE
1241 /* Try to load an engine in a shareable library */
1242 static ENGINE *try_load_engine(const char *engine)
1243 {
1244     ENGINE *e = ENGINE_by_id("dynamic");
1245     if (e) {
1246         if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1247             || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1248             ENGINE_free(e);
1249             e = NULL;
1250         }
1251     }
1252     return e;
1253 }
1254
1255 ENGINE *setup_engine(const char *engine, int debug)
1256 {
1257     ENGINE *e = NULL;
1258
1259     if (engine) {
1260         if (strcmp(engine, "auto") == 0) {
1261             BIO_printf(bio_err, "enabling auto ENGINE support\n");
1262             ENGINE_register_all_complete();
1263             return NULL;
1264         }
1265         if ((e = ENGINE_by_id(engine)) == NULL
1266             && (e = try_load_engine(engine)) == NULL) {
1267             BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1268             ERR_print_errors(bio_err);
1269             return NULL;
1270         }
1271         if (debug) {
1272             ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1273         }
1274         ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1275         if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1276             BIO_printf(bio_err, "can't use that engine\n");
1277             ERR_print_errors(bio_err);
1278             ENGINE_free(e);
1279             return NULL;
1280         }
1281
1282         BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1283     }
1284     return e;
1285 }
1286 #endif
1287
1288 void release_engine(ENGINE *e)
1289 {
1290 #ifndef OPENSSL_NO_ENGINE
1291     if (e != NULL)
1292         /* Free our "structural" reference. */
1293         ENGINE_free(e);
1294 #endif
1295 }
1296
1297 static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1298 {
1299     const char *n;
1300
1301     n = a[DB_serial];
1302     while (*n == '0')
1303         n++;
1304     return OPENSSL_LH_strhash(n);
1305 }
1306
1307 static int index_serial_cmp(const OPENSSL_CSTRING *a,
1308                             const OPENSSL_CSTRING *b)
1309 {
1310     const char *aa, *bb;
1311
1312     for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1313     for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1314     return (strcmp(aa, bb));
1315 }
1316
1317 static int index_name_qual(char **a)
1318 {
1319     return (a[0][0] == 'V');
1320 }
1321
1322 static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1323 {
1324     return OPENSSL_LH_strhash(a[DB_name]);
1325 }
1326
1327 int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1328 {
1329     return (strcmp(a[DB_name], b[DB_name]));
1330 }
1331
1332 static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1333 static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1334 static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1335 static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1336 #undef BSIZE
1337 #define BSIZE 256
1338 BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai)
1339 {
1340     BIO *in = NULL;
1341     BIGNUM *ret = NULL;
1342     char buf[1024];
1343     ASN1_INTEGER *ai = NULL;
1344
1345     ai = ASN1_INTEGER_new();
1346     if (ai == NULL)
1347         goto err;
1348
1349     in = BIO_new_file(serialfile, "r");
1350     if (in == NULL) {
1351         if (!create) {
1352             perror(serialfile);
1353             goto err;
1354         }
1355         ERR_clear_error();
1356         ret = BN_new();
1357         if (ret == NULL || !rand_serial(ret, ai))
1358             BIO_printf(bio_err, "Out of memory\n");
1359     } else {
1360         if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1361             BIO_printf(bio_err, "unable to load number from %s\n",
1362                        serialfile);
1363             goto err;
1364         }
1365         ret = ASN1_INTEGER_to_BN(ai, NULL);
1366         if (ret == NULL) {
1367             BIO_printf(bio_err,
1368                        "error converting number from bin to BIGNUM\n");
1369             goto err;
1370         }
1371     }
1372
1373     if (ret && retai) {
1374         *retai = ai;
1375         ai = NULL;
1376     }
1377  err:
1378     BIO_free(in);
1379     ASN1_INTEGER_free(ai);
1380     return (ret);
1381 }
1382
1383 int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1384                 ASN1_INTEGER **retai)
1385 {
1386     char buf[1][BSIZE];
1387     BIO *out = NULL;
1388     int ret = 0;
1389     ASN1_INTEGER *ai = NULL;
1390     int j;
1391
1392     if (suffix == NULL)
1393         j = strlen(serialfile);
1394     else
1395         j = strlen(serialfile) + strlen(suffix) + 1;
1396     if (j >= BSIZE) {
1397         BIO_printf(bio_err, "file name too long\n");
1398         goto err;
1399     }
1400
1401     if (suffix == NULL)
1402         OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1403     else {
1404 #ifndef OPENSSL_SYS_VMS
1405         j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, suffix);
1406 #else
1407         j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, suffix);
1408 #endif
1409     }
1410     out = BIO_new_file(buf[0], "w");
1411     if (out == NULL) {
1412         ERR_print_errors(bio_err);
1413         goto err;
1414     }
1415
1416     if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1417         BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1418         goto err;
1419     }
1420     i2a_ASN1_INTEGER(out, ai);
1421     BIO_puts(out, "\n");
1422     ret = 1;
1423     if (retai) {
1424         *retai = ai;
1425         ai = NULL;
1426     }
1427  err:
1428     BIO_free_all(out);
1429     ASN1_INTEGER_free(ai);
1430     return (ret);
1431 }
1432
1433 int rotate_serial(const char *serialfile, const char *new_suffix,
1434                   const char *old_suffix)
1435 {
1436     char buf[2][BSIZE];
1437     int i, j;
1438
1439     i = strlen(serialfile) + strlen(old_suffix);
1440     j = strlen(serialfile) + strlen(new_suffix);
1441     if (i > j)
1442         j = i;
1443     if (j + 1 >= BSIZE) {
1444         BIO_printf(bio_err, "file name too long\n");
1445         goto err;
1446     }
1447 #ifndef OPENSSL_SYS_VMS
1448     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, new_suffix);
1449     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", serialfile, old_suffix);
1450 #else
1451     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, new_suffix);
1452     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", serialfile, old_suffix);
1453 #endif
1454     if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1455 #ifdef ENOTDIR
1456         && errno != ENOTDIR
1457 #endif
1458         ) {
1459         BIO_printf(bio_err,
1460                    "unable to rename %s to %s\n", serialfile, buf[1]);
1461         perror("reason");
1462         goto err;
1463     }
1464     if (rename(buf[0], serialfile) < 0) {
1465         BIO_printf(bio_err,
1466                    "unable to rename %s to %s\n", buf[0], serialfile);
1467         perror("reason");
1468         rename(buf[1], serialfile);
1469         goto err;
1470     }
1471     return 1;
1472  err:
1473     return 0;
1474 }
1475
1476 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1477 {
1478     BIGNUM *btmp;
1479     int ret = 0;
1480
1481     if (b)
1482         btmp = b;
1483     else
1484         btmp = BN_new();
1485
1486     if (btmp == NULL)
1487         return 0;
1488
1489     if (!BN_pseudo_rand(btmp, SERIAL_RAND_BITS, 0, 0))
1490         goto error;
1491     if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1492         goto error;
1493
1494     ret = 1;
1495
1496  error:
1497
1498     if (btmp != b)
1499         BN_free(btmp);
1500
1501     return ret;
1502 }
1503
1504 CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1505 {
1506     CA_DB *retdb = NULL;
1507     TXT_DB *tmpdb = NULL;
1508     BIO *in;
1509     CONF *dbattr_conf = NULL;
1510     char buf[BSIZE];
1511
1512     in = BIO_new_file(dbfile, "r");
1513     if (in == NULL) {
1514         ERR_print_errors(bio_err);
1515         goto err;
1516     }
1517     if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1518         goto err;
1519
1520 #ifndef OPENSSL_SYS_VMS
1521     BIO_snprintf(buf, sizeof buf, "%s.attr", dbfile);
1522 #else
1523     BIO_snprintf(buf, sizeof buf, "%s-attr", dbfile);
1524 #endif
1525     dbattr_conf = app_load_config(buf);
1526
1527     retdb = app_malloc(sizeof(*retdb), "new DB");
1528     retdb->db = tmpdb;
1529     tmpdb = NULL;
1530     if (db_attr)
1531         retdb->attributes = *db_attr;
1532     else {
1533         retdb->attributes.unique_subject = 1;
1534     }
1535
1536     if (dbattr_conf) {
1537         char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1538         if (p) {
1539             retdb->attributes.unique_subject = parse_yesno(p, 1);
1540         }
1541     }
1542
1543  err:
1544     NCONF_free(dbattr_conf);
1545     TXT_DB_free(tmpdb);
1546     BIO_free_all(in);
1547     return retdb;
1548 }
1549
1550 int index_index(CA_DB *db)
1551 {
1552     if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1553                              LHASH_HASH_FN(index_serial),
1554                              LHASH_COMP_FN(index_serial))) {
1555         BIO_printf(bio_err,
1556                    "error creating serial number index:(%ld,%ld,%ld)\n",
1557                    db->db->error, db->db->arg1, db->db->arg2);
1558         return 0;
1559     }
1560
1561     if (db->attributes.unique_subject
1562         && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1563                                 LHASH_HASH_FN(index_name),
1564                                 LHASH_COMP_FN(index_name))) {
1565         BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1566                    db->db->error, db->db->arg1, db->db->arg2);
1567         return 0;
1568     }
1569     return 1;
1570 }
1571
1572 int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1573 {
1574     char buf[3][BSIZE];
1575     BIO *out;
1576     int j;
1577
1578     j = strlen(dbfile) + strlen(suffix);
1579     if (j + 6 >= BSIZE) {
1580         BIO_printf(bio_err, "file name too long\n");
1581         goto err;
1582     }
1583 #ifndef OPENSSL_SYS_VMS
1584     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr", dbfile);
1585     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.attr.%s", dbfile, suffix);
1586     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, suffix);
1587 #else
1588     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr", dbfile);
1589     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-attr-%s", dbfile, suffix);
1590     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, suffix);
1591 #endif
1592     out = BIO_new_file(buf[0], "w");
1593     if (out == NULL) {
1594         perror(dbfile);
1595         BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1596         goto err;
1597     }
1598     j = TXT_DB_write(out, db->db);
1599     BIO_free(out);
1600     if (j <= 0)
1601         goto err;
1602
1603     out = BIO_new_file(buf[1], "w");
1604     if (out == NULL) {
1605         perror(buf[2]);
1606         BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1607         goto err;
1608     }
1609     BIO_printf(out, "unique_subject = %s\n",
1610                db->attributes.unique_subject ? "yes" : "no");
1611     BIO_free(out);
1612
1613     return 1;
1614  err:
1615     return 0;
1616 }
1617
1618 int rotate_index(const char *dbfile, const char *new_suffix,
1619                  const char *old_suffix)
1620 {
1621     char buf[5][BSIZE];
1622     int i, j;
1623
1624     i = strlen(dbfile) + strlen(old_suffix);
1625     j = strlen(dbfile) + strlen(new_suffix);
1626     if (i > j)
1627         j = i;
1628     if (j + 6 >= BSIZE) {
1629         BIO_printf(bio_err, "file name too long\n");
1630         goto err;
1631     }
1632 #ifndef OPENSSL_SYS_VMS
1633     j = BIO_snprintf(buf[4], sizeof buf[4], "%s.attr", dbfile);
1634     j = BIO_snprintf(buf[3], sizeof buf[3], "%s.attr.%s", dbfile, old_suffix);
1635     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr.%s", dbfile, new_suffix);
1636     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", dbfile, old_suffix);
1637     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, new_suffix);
1638 #else
1639     j = BIO_snprintf(buf[4], sizeof buf[4], "%s-attr", dbfile);
1640     j = BIO_snprintf(buf[3], sizeof buf[3], "%s-attr-%s", dbfile, old_suffix);
1641     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr-%s", dbfile, new_suffix);
1642     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", dbfile, old_suffix);
1643     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, new_suffix);
1644 #endif
1645     if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1646 #ifdef ENOTDIR
1647         && errno != ENOTDIR
1648 #endif
1649         ) {
1650         BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1651         perror("reason");
1652         goto err;
1653     }
1654     if (rename(buf[0], dbfile) < 0) {
1655         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1656         perror("reason");
1657         rename(buf[1], dbfile);
1658         goto err;
1659     }
1660     if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1661 #ifdef ENOTDIR
1662         && errno != ENOTDIR
1663 #endif
1664         ) {
1665         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1666         perror("reason");
1667         rename(dbfile, buf[0]);
1668         rename(buf[1], dbfile);
1669         goto err;
1670     }
1671     if (rename(buf[2], buf[4]) < 0) {
1672         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1673         perror("reason");
1674         rename(buf[3], buf[4]);
1675         rename(dbfile, buf[0]);
1676         rename(buf[1], dbfile);
1677         goto err;
1678     }
1679     return 1;
1680  err:
1681     return 0;
1682 }
1683
1684 void free_index(CA_DB *db)
1685 {
1686     if (db) {
1687         TXT_DB_free(db->db);
1688         OPENSSL_free(db);
1689     }
1690 }
1691
1692 int parse_yesno(const char *str, int def)
1693 {
1694     if (str) {
1695         switch (*str) {
1696         case 'f':              /* false */
1697         case 'F':              /* FALSE */
1698         case 'n':              /* no */
1699         case 'N':              /* NO */
1700         case '0':              /* 0 */
1701             return 0;
1702         case 't':              /* true */
1703         case 'T':              /* TRUE */
1704         case 'y':              /* yes */
1705         case 'Y':              /* YES */
1706         case '1':              /* 1 */
1707             return 1;
1708         }
1709     }
1710     return def;
1711 }
1712
1713 /*
1714  * name is expected to be in the format /type0=value0/type1=value1/type2=...
1715  * where characters may be escaped by \
1716  */
1717 X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1718 {
1719     int nextismulti = 0;
1720     char *work;
1721     X509_NAME *n;
1722
1723     if (*cp++ != '/')
1724         return NULL;
1725
1726     n = X509_NAME_new();
1727     if (n == NULL)
1728         return NULL;
1729     work = OPENSSL_strdup(cp);
1730     if (work == NULL)
1731         goto err;
1732
1733     while (*cp) {
1734         char *bp = work;
1735         char *typestr = bp;
1736         unsigned char *valstr;
1737         int nid;
1738         int ismulti = nextismulti;
1739         nextismulti = 0;
1740
1741         /* Collect the type */
1742         while (*cp && *cp != '=')
1743             *bp++ = *cp++;
1744         if (*cp == '\0') {
1745             BIO_printf(bio_err,
1746                     "%s: Hit end of string before finding the equals.\n",
1747                     opt_getprog());
1748             goto err;
1749         }
1750         *bp++ = '\0';
1751         ++cp;
1752
1753         /* Collect the value. */
1754         valstr = (unsigned char *)bp;
1755         for (; *cp && *cp != '/'; *bp++ = *cp++) {
1756             if (canmulti && *cp == '+') {
1757                 nextismulti = 1;
1758                 break;
1759             }
1760             if (*cp == '\\' && *++cp == '\0') {
1761                 BIO_printf(bio_err,
1762                         "%s: escape character at end of string\n",
1763                         opt_getprog());
1764                 goto err;
1765             }
1766         }
1767         *bp++ = '\0';
1768
1769         /* If not at EOS (must be + or /), move forward. */
1770         if (*cp)
1771             ++cp;
1772
1773         /* Parse */
1774         nid = OBJ_txt2nid(typestr);
1775         if (nid == NID_undef) {
1776             BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1777                       opt_getprog(), typestr);
1778             continue;
1779         }
1780         if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1781                                         valstr, strlen((char *)valstr),
1782                                         -1, ismulti ? -1 : 0))
1783             goto err;
1784     }
1785
1786     OPENSSL_free(work);
1787     return n;
1788
1789  err:
1790     X509_NAME_free(n);
1791     OPENSSL_free(work);
1792     return NULL;
1793 }
1794
1795 /*
1796  * Read whole contents of a BIO into an allocated memory buffer and return
1797  * it.
1798  */
1799
1800 int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1801 {
1802     BIO *mem;
1803     int len, ret;
1804     unsigned char tbuf[1024];
1805
1806     mem = BIO_new(BIO_s_mem());
1807     if (mem == NULL)
1808         return -1;
1809     for (;;) {
1810         if ((maxlen != -1) && maxlen < 1024)
1811             len = maxlen;
1812         else
1813             len = 1024;
1814         len = BIO_read(in, tbuf, len);
1815         if (len < 0) {
1816             BIO_free(mem);
1817             return -1;
1818         }
1819         if (len == 0)
1820             break;
1821         if (BIO_write(mem, tbuf, len) != len) {
1822             BIO_free(mem);
1823             return -1;
1824         }
1825         maxlen -= len;
1826
1827         if (maxlen == 0)
1828             break;
1829     }
1830     ret = BIO_get_mem_data(mem, (char **)out);
1831     BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1832     BIO_free(mem);
1833     return ret;
1834 }
1835
1836 int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1837 {
1838     int rv;
1839     char *stmp, *vtmp = NULL;
1840     stmp = OPENSSL_strdup(value);
1841     if (!stmp)
1842         return -1;
1843     vtmp = strchr(stmp, ':');
1844     if (vtmp) {
1845         *vtmp = 0;
1846         vtmp++;
1847     }
1848     rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1849     OPENSSL_free(stmp);
1850     return rv;
1851 }
1852
1853 static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1854 {
1855     X509_POLICY_NODE *node;
1856     int i;
1857
1858     BIO_printf(bio_err, "%s Policies:", name);
1859     if (nodes) {
1860         BIO_puts(bio_err, "\n");
1861         for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1862             node = sk_X509_POLICY_NODE_value(nodes, i);
1863             X509_POLICY_NODE_print(bio_err, node, 2);
1864         }
1865     } else
1866         BIO_puts(bio_err, " <empty>\n");
1867 }
1868
1869 void policies_print(X509_STORE_CTX *ctx)
1870 {
1871     X509_POLICY_TREE *tree;
1872     int explicit_policy;
1873     tree = X509_STORE_CTX_get0_policy_tree(ctx);
1874     explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1875
1876     BIO_printf(bio_err, "Require explicit Policy: %s\n",
1877                explicit_policy ? "True" : "False");
1878
1879     nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1880     nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1881 }
1882
1883 /*-
1884  * next_protos_parse parses a comma separated list of strings into a string
1885  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1886  *   outlen: (output) set to the length of the resulting buffer on success.
1887  *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1888  *   in: a NUL terminated string like "abc,def,ghi"
1889  *
1890  *   returns: a malloc'd buffer or NULL on failure.
1891  */
1892 unsigned char *next_protos_parse(size_t *outlen, const char *in)
1893 {
1894     size_t len;
1895     unsigned char *out;
1896     size_t i, start = 0;
1897
1898     len = strlen(in);
1899     if (len >= 65535)
1900         return NULL;
1901
1902     out = app_malloc(strlen(in) + 1, "NPN buffer");
1903     for (i = 0; i <= len; ++i) {
1904         if (i == len || in[i] == ',') {
1905             if (i - start > 255) {
1906                 OPENSSL_free(out);
1907                 return NULL;
1908             }
1909             out[start] = i - start;
1910             start = i + 1;
1911         } else
1912             out[i + 1] = in[i];
1913     }
1914
1915     *outlen = len + 1;
1916     return out;
1917 }
1918
1919 void print_cert_checks(BIO *bio, X509 *x,
1920                        const char *checkhost,
1921                        const char *checkemail, const char *checkip)
1922 {
1923     if (x == NULL)
1924         return;
1925     if (checkhost) {
1926         BIO_printf(bio, "Hostname %s does%s match certificate\n",
1927                    checkhost,
1928                    X509_check_host(x, checkhost, 0, 0, NULL) == 1
1929                        ? "" : " NOT");
1930     }
1931
1932     if (checkemail) {
1933         BIO_printf(bio, "Email %s does%s match certificate\n",
1934                    checkemail, X509_check_email(x, checkemail, 0, 0)
1935                    ? "" : " NOT");
1936     }
1937
1938     if (checkip) {
1939         BIO_printf(bio, "IP %s does%s match certificate\n",
1940                    checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
1941     }
1942 }
1943
1944 /* Get first http URL from a DIST_POINT structure */
1945
1946 static const char *get_dp_url(DIST_POINT *dp)
1947 {
1948     GENERAL_NAMES *gens;
1949     GENERAL_NAME *gen;
1950     int i, gtype;
1951     ASN1_STRING *uri;
1952     if (!dp->distpoint || dp->distpoint->type != 0)
1953         return NULL;
1954     gens = dp->distpoint->name.fullname;
1955     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
1956         gen = sk_GENERAL_NAME_value(gens, i);
1957         uri = GENERAL_NAME_get0_value(gen, &gtype);
1958         if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
1959             const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
1960             if (strncmp(uptr, "http://", 7) == 0)
1961                 return uptr;
1962         }
1963     }
1964     return NULL;
1965 }
1966
1967 /*
1968  * Look through a CRLDP structure and attempt to find an http URL to
1969  * downloads a CRL from.
1970  */
1971
1972 static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
1973 {
1974     int i;
1975     const char *urlptr = NULL;
1976     for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
1977         DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
1978         urlptr = get_dp_url(dp);
1979         if (urlptr)
1980             return load_crl(urlptr, FORMAT_HTTP);
1981     }
1982     return NULL;
1983 }
1984
1985 /*
1986  * Example of downloading CRLs from CRLDP: not usable for real world as it
1987  * always downloads, doesn't support non-blocking I/O and doesn't cache
1988  * anything.
1989  */
1990
1991 static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
1992 {
1993     X509 *x;
1994     STACK_OF(X509_CRL) *crls = NULL;
1995     X509_CRL *crl;
1996     STACK_OF(DIST_POINT) *crldp;
1997
1998     crls = sk_X509_CRL_new_null();
1999     if (!crls)
2000         return NULL;
2001     x = X509_STORE_CTX_get_current_cert(ctx);
2002     crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
2003     crl = load_crl_crldp(crldp);
2004     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2005     if (!crl) {
2006         sk_X509_CRL_free(crls);
2007         return NULL;
2008     }
2009     sk_X509_CRL_push(crls, crl);
2010     /* Try to download delta CRL */
2011     crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
2012     crl = load_crl_crldp(crldp);
2013     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2014     if (crl)
2015         sk_X509_CRL_push(crls, crl);
2016     return crls;
2017 }
2018
2019 void store_setup_crl_download(X509_STORE *st)
2020 {
2021     X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2022 }
2023
2024 /*
2025  * Platform-specific sections
2026  */
2027 #if defined(_WIN32)
2028 # ifdef fileno
2029 #  undef fileno
2030 #  define fileno(a) (int)_fileno(a)
2031 # endif
2032
2033 # include <windows.h>
2034 # include <tchar.h>
2035
2036 static int WIN32_rename(const char *from, const char *to)
2037 {
2038     TCHAR *tfrom = NULL, *tto;
2039     DWORD err;
2040     int ret = 0;
2041
2042     if (sizeof(TCHAR) == 1) {
2043         tfrom = (TCHAR *)from;
2044         tto = (TCHAR *)to;
2045     } else {                    /* UNICODE path */
2046
2047         size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2048         tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2049         if (tfrom == NULL)
2050             goto err;
2051         tto = tfrom + flen;
2052 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2053         if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2054 # endif
2055             for (i = 0; i < flen; i++)
2056                 tfrom[i] = (TCHAR)from[i];
2057 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2058         if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2059 # endif
2060             for (i = 0; i < tlen; i++)
2061                 tto[i] = (TCHAR)to[i];
2062     }
2063
2064     if (MoveFile(tfrom, tto))
2065         goto ok;
2066     err = GetLastError();
2067     if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2068         if (DeleteFile(tto) && MoveFile(tfrom, tto))
2069             goto ok;
2070         err = GetLastError();
2071     }
2072     if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2073         errno = ENOENT;
2074     else if (err == ERROR_ACCESS_DENIED)
2075         errno = EACCES;
2076     else
2077         errno = EINVAL;         /* we could map more codes... */
2078  err:
2079     ret = -1;
2080  ok:
2081     if (tfrom != NULL && tfrom != (TCHAR *)from)
2082         free(tfrom);
2083     return ret;
2084 }
2085 #endif
2086
2087 /* app_tminterval section */
2088 #if defined(_WIN32)
2089 double app_tminterval(int stop, int usertime)
2090 {
2091     FILETIME now;
2092     double ret = 0;
2093     static ULARGE_INTEGER tmstart;
2094     static int warning = 1;
2095 # ifdef _WIN32_WINNT
2096     static HANDLE proc = NULL;
2097
2098     if (proc == NULL) {
2099         if (check_winnt())
2100             proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2101                                GetCurrentProcessId());
2102         if (proc == NULL)
2103             proc = (HANDLE) - 1;
2104     }
2105
2106     if (usertime && proc != (HANDLE) - 1) {
2107         FILETIME junk;
2108         GetProcessTimes(proc, &junk, &junk, &junk, &now);
2109     } else
2110 # endif
2111     {
2112         SYSTEMTIME systime;
2113
2114         if (usertime && warning) {
2115             BIO_printf(bio_err, "To get meaningful results, run "
2116                        "this program on idle system.\n");
2117             warning = 0;
2118         }
2119         GetSystemTime(&systime);
2120         SystemTimeToFileTime(&systime, &now);
2121     }
2122
2123     if (stop == TM_START) {
2124         tmstart.u.LowPart = now.dwLowDateTime;
2125         tmstart.u.HighPart = now.dwHighDateTime;
2126     } else {
2127         ULARGE_INTEGER tmstop;
2128
2129         tmstop.u.LowPart = now.dwLowDateTime;
2130         tmstop.u.HighPart = now.dwHighDateTime;
2131
2132         ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2133     }
2134
2135     return (ret);
2136 }
2137 #elif defined(OPENSSL_SYSTEM_VXWORKS)
2138 # include <time.h>
2139
2140 double app_tminterval(int stop, int usertime)
2141 {
2142     double ret = 0;
2143 # ifdef CLOCK_REALTIME
2144     static struct timespec tmstart;
2145     struct timespec now;
2146 # else
2147     static unsigned long tmstart;
2148     unsigned long now;
2149 # endif
2150     static int warning = 1;
2151
2152     if (usertime && warning) {
2153         BIO_printf(bio_err, "To get meaningful results, run "
2154                    "this program on idle system.\n");
2155         warning = 0;
2156     }
2157 # ifdef CLOCK_REALTIME
2158     clock_gettime(CLOCK_REALTIME, &now);
2159     if (stop == TM_START)
2160         tmstart = now;
2161     else
2162         ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2163                - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2164 # else
2165     now = tickGet();
2166     if (stop == TM_START)
2167         tmstart = now;
2168     else
2169         ret = (now - tmstart) / (double)sysClkRateGet();
2170 # endif
2171     return (ret);
2172 }
2173
2174 #elif defined(OPENSSL_SYSTEM_VMS)
2175 # include <time.h>
2176 # include <times.h>
2177
2178 double app_tminterval(int stop, int usertime)
2179 {
2180     static clock_t tmstart;
2181     double ret = 0;
2182     clock_t now;
2183 # ifdef __TMS
2184     struct tms rus;
2185
2186     now = times(&rus);
2187     if (usertime)
2188         now = rus.tms_utime;
2189 # else
2190     if (usertime)
2191         now = clock();          /* sum of user and kernel times */
2192     else {
2193         struct timeval tv;
2194         gettimeofday(&tv, NULL);
2195         now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2196                         (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2197             );
2198     }
2199 # endif
2200     if (stop == TM_START)
2201         tmstart = now;
2202     else
2203         ret = (now - tmstart) / (double)(CLK_TCK);
2204
2205     return (ret);
2206 }
2207
2208 #elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2209 # include <sys/times.h>
2210
2211 double app_tminterval(int stop, int usertime)
2212 {
2213     double ret = 0;
2214     struct tms rus;
2215     clock_t now = times(&rus);
2216     static clock_t tmstart;
2217
2218     if (usertime)
2219         now = rus.tms_utime;
2220
2221     if (stop == TM_START)
2222         tmstart = now;
2223     else {
2224         long int tck = sysconf(_SC_CLK_TCK);
2225         ret = (now - tmstart) / (double)tck;
2226     }
2227
2228     return (ret);
2229 }
2230
2231 #else
2232 # include <sys/time.h>
2233 # include <sys/resource.h>
2234
2235 double app_tminterval(int stop, int usertime)
2236 {
2237     double ret = 0;
2238     struct rusage rus;
2239     struct timeval now;
2240     static struct timeval tmstart;
2241
2242     if (usertime)
2243         getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2244     else
2245         gettimeofday(&now, NULL);
2246
2247     if (stop == TM_START)
2248         tmstart = now;
2249     else
2250         ret = ((now.tv_sec + now.tv_usec * 1e-6)
2251                - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2252
2253     return ret;
2254 }
2255 #endif
2256
2257 int app_access(const char* name, int flag)
2258 {
2259 #ifdef _WIN32
2260     return _access(name, flag);
2261 #else
2262     return access(name, flag);
2263 #endif
2264 }
2265
2266 /* app_isdir section */
2267 #ifdef _WIN32
2268 int app_isdir(const char *name)
2269 {
2270     HANDLE hList;
2271     WIN32_FIND_DATA FileData;
2272 # if defined(UNICODE) || defined(_UNICODE)
2273     size_t i, len_0 = strlen(name) + 1;
2274
2275     if (len_0 > OSSL_NELEM(FileData.cFileName))
2276         return -1;
2277
2278 #  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2279     if (!MultiByteToWideChar
2280         (CP_ACP, 0, name, len_0, FileData.cFileName, len_0))
2281 #  endif
2282         for (i = 0; i < len_0; i++)
2283             FileData.cFileName[i] = (WCHAR)name[i];
2284
2285     hList = FindFirstFile(FileData.cFileName, &FileData);
2286 # else
2287     hList = FindFirstFile(name, &FileData);
2288 # endif
2289     if (hList == INVALID_HANDLE_VALUE)
2290         return -1;
2291     FindClose(hList);
2292     return ((FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
2293 }
2294 #else
2295 # include <sys/stat.h>
2296 # ifndef S_ISDIR
2297 #  if defined(_S_IFMT) && defined(_S_IFDIR)
2298 #   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2299 #  else
2300 #   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2301 #  endif
2302 # endif
2303
2304 int app_isdir(const char *name)
2305 {
2306 # if defined(S_ISDIR)
2307     struct stat st;
2308
2309     if (stat(name, &st) == 0)
2310         return S_ISDIR(st.st_mode);
2311     else
2312         return -1;
2313 # else
2314     return -1;
2315 # endif
2316 }
2317 #endif
2318
2319 /* raw_read|write section */
2320 #if defined(__VMS)
2321 # include "vms_term_sock.h"
2322 static int stdin_sock = -1;
2323
2324 static void close_stdin_sock(void)
2325 {
2326     TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2327 }
2328
2329 int fileno_stdin(void)
2330 {
2331     if (stdin_sock == -1) {
2332         TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2333         atexit(close_stdin_sock);
2334     }
2335
2336     return stdin_sock;
2337 }
2338 #else
2339 int fileno_stdin(void)
2340 {
2341     return fileno(stdin);
2342 }
2343 #endif
2344
2345 int fileno_stdout(void)
2346 {
2347     return fileno(stdout);
2348 }
2349
2350 #if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2351 int raw_read_stdin(void *buf, int siz)
2352 {
2353     DWORD n;
2354     if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2355         return (n);
2356     else
2357         return (-1);
2358 }
2359 #elif defined(__VMS)
2360 #include <sys/socket.h>
2361
2362 int raw_read_stdin(void *buf, int siz)
2363 {
2364     return recv(fileno_stdin(), buf, siz, 0);
2365 }
2366 #else
2367 int raw_read_stdin(void *buf, int siz)
2368 {
2369     return read(fileno_stdin(), buf, siz);
2370 }
2371 #endif
2372
2373 #if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2374 int raw_write_stdout(const void *buf, int siz)
2375 {
2376     DWORD n;
2377     if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2378         return (n);
2379     else
2380         return (-1);
2381 }
2382 #else
2383 int raw_write_stdout(const void *buf, int siz)
2384 {
2385     return write(fileno_stdout(), buf, siz);
2386 }
2387 #endif
2388
2389 /*
2390  * Centralized handling if input and output files with format specification
2391  * The format is meant to show what the input and output is supposed to be,
2392  * and is therefore a show of intent more than anything else.  However, it
2393  * does impact behavior on some platform, such as differentiating between
2394  * text and binary input/output on non-Unix platforms
2395  */
2396 static int istext(int format)
2397 {
2398     return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2399 }
2400
2401 BIO *dup_bio_in(int format)
2402 {
2403     return BIO_new_fp(stdin,
2404                       BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2405 }
2406
2407 BIO *dup_bio_out(int format)
2408 {
2409     BIO *b = BIO_new_fp(stdout,
2410                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2411 #ifdef OPENSSL_SYS_VMS
2412     if (istext(format))
2413         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2414 #endif
2415     return b;
2416 }
2417
2418 BIO *dup_bio_err(int format)
2419 {
2420     BIO *b = BIO_new_fp(stderr,
2421                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2422 #ifdef OPENSSL_SYS_VMS
2423     if (istext(format))
2424         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2425 #endif
2426     return b;
2427 }
2428
2429 void unbuffer(FILE *fp)
2430 {
2431 /*
2432  * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2433  * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2434  * However, we trust that the C RTL will never give us a FILE pointer
2435  * above the first 4 GB of memory, so we simply turn off the warning
2436  * temporarily.
2437  */
2438 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2439 # pragma environment save
2440 # pragma message disable maylosedata2
2441 #endif
2442     setbuf(fp, NULL);
2443 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2444 # pragma environment restore
2445 #endif
2446 }
2447
2448 static const char *modestr(char mode, int format)
2449 {
2450     OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2451
2452     switch (mode) {
2453     case 'a':
2454         return istext(format) ? "a" : "ab";
2455     case 'r':
2456         return istext(format) ? "r" : "rb";
2457     case 'w':
2458         return istext(format) ? "w" : "wb";
2459     }
2460     /* The assert above should make sure we never reach this point */
2461     return NULL;
2462 }
2463
2464 static const char *modeverb(char mode)
2465 {
2466     switch (mode) {
2467     case 'a':
2468         return "appending";
2469     case 'r':
2470         return "reading";
2471     case 'w':
2472         return "writing";
2473     }
2474     return "(doing something)";
2475 }
2476
2477 /*
2478  * Open a file for writing, owner-read-only.
2479  */
2480 BIO *bio_open_owner(const char *filename, int format, int private)
2481 {
2482     FILE *fp = NULL;
2483     BIO *b = NULL;
2484     int fd = -1, bflags, mode, textmode;
2485
2486     if (!private || filename == NULL || strcmp(filename, "-") == 0)
2487         return bio_open_default(filename, 'w', format);
2488
2489     mode = O_WRONLY;
2490 #ifdef O_CREAT
2491     mode |= O_CREAT;
2492 #endif
2493 #ifdef O_TRUNC
2494     mode |= O_TRUNC;
2495 #endif
2496     textmode = istext(format);
2497     if (!textmode) {
2498 #ifdef O_BINARY
2499         mode |= O_BINARY;
2500 #elif defined(_O_BINARY)
2501         mode |= _O_BINARY;
2502 #endif
2503     }
2504
2505 #ifdef OPENSSL_SYS_VMS
2506     /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2507      * it still needs to know that we're going binary, or fdopen()
2508      * will fail with "invalid argument"...  so we tell VMS what the
2509      * context is.
2510      */
2511     if (!textmode)
2512         fd = open(filename, mode, 0600, "ctx=bin");
2513     else
2514 #endif
2515         fd = open(filename, mode, 0600);
2516     if (fd < 0)
2517         goto err;
2518     fp = fdopen(fd, modestr('w', format));
2519     if (fp == NULL)
2520         goto err;
2521     bflags = BIO_CLOSE;
2522     if (textmode)
2523         bflags |= BIO_FP_TEXT;
2524     b = BIO_new_fp(fp, bflags);
2525     if (b)
2526         return b;
2527
2528  err:
2529     BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2530                opt_getprog(), filename, strerror(errno));
2531     ERR_print_errors(bio_err);
2532     /* If we have fp, then fdopen took over fd, so don't close both. */
2533     if (fp)
2534         fclose(fp);
2535     else if (fd >= 0)
2536         close(fd);
2537     return NULL;
2538 }
2539
2540 static BIO *bio_open_default_(const char *filename, char mode, int format,
2541                               int quiet)
2542 {
2543     BIO *ret;
2544
2545     if (filename == NULL || strcmp(filename, "-") == 0) {
2546         ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2547         if (quiet) {
2548             ERR_clear_error();
2549             return ret;
2550         }
2551         if (ret != NULL)
2552             return ret;
2553         BIO_printf(bio_err,
2554                    "Can't open %s, %s\n",
2555                    mode == 'r' ? "stdin" : "stdout", strerror(errno));
2556     } else {
2557         ret = BIO_new_file(filename, modestr(mode, format));
2558         if (quiet) {
2559             ERR_clear_error();
2560             return ret;
2561         }
2562         if (ret != NULL)
2563             return ret;
2564         BIO_printf(bio_err,
2565                    "Can't open %s for %s, %s\n",
2566                    filename, modeverb(mode), strerror(errno));
2567     }
2568     ERR_print_errors(bio_err);
2569     return NULL;
2570 }
2571
2572 BIO *bio_open_default(const char *filename, char mode, int format)
2573 {
2574     return bio_open_default_(filename, mode, format, 0);
2575 }
2576
2577 BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2578 {
2579     return bio_open_default_(filename, mode, format, 1);
2580 }
2581
2582 void wait_for_async(SSL *s)
2583 {
2584     /* On Windows select only works for sockets, so we simply don't wait  */
2585 #ifndef OPENSSL_SYS_WINDOWS
2586     int width = 0;
2587     fd_set asyncfds;
2588     OSSL_ASYNC_FD *fds;
2589     size_t numfds;
2590
2591     if (!SSL_get_all_async_fds(s, NULL, &numfds))
2592         return;
2593     if (numfds == 0)
2594         return;
2595     fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2596     if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2597         OPENSSL_free(fds);
2598     }
2599
2600     FD_ZERO(&asyncfds);
2601     while (numfds > 0) {
2602         if (width <= (int)*fds)
2603             width = (int)*fds + 1;
2604         openssl_fdset((int)*fds, &asyncfds);
2605         numfds--;
2606         fds++;
2607     }
2608     select(width, (void *)&asyncfds, NULL, NULL, NULL);
2609 #endif
2610 }
2611
2612 /* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2613 #if defined(OPENSSL_SYS_MSDOS)
2614 int has_stdin_waiting(void)
2615 {
2616 # if defined(OPENSSL_SYS_WINDOWS)
2617     HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2618     DWORD events = 0;
2619     INPUT_RECORD inputrec;
2620     DWORD insize = 1;
2621     BOOL peeked;
2622
2623     if (inhand == INVALID_HANDLE_VALUE) {
2624         return 0;
2625     }
2626
2627     peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2628     if (!peeked) {
2629         /* Probably redirected input? _kbhit() does not work in this case */
2630         if (!feof(stdin)) {
2631             return 1;
2632         }
2633         return 0;
2634     }
2635 # endif
2636     return _kbhit();
2637 }
2638 #endif
2639
2640 /* Corrupt a signature by modifying final byte */
2641 void corrupt_signature(const ASN1_STRING *signature)
2642 {
2643         unsigned char *s = signature->data;
2644         s[signature->length - 1] ^= 0x1;
2645 }
2646
2647 int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2648                    int days)
2649 {
2650     if (startdate == NULL || strcmp(startdate, "today") == 0) {
2651         if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2652             return 0;
2653     } else {
2654         if (!ASN1_TIME_set_string(X509_getm_notBefore(x), startdate))
2655             return 0;
2656     }
2657     if (enddate == NULL) {
2658         if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2659             == NULL)
2660             return 0;
2661     } else if (!ASN1_TIME_set_string(X509_getm_notAfter(x), enddate)) {
2662         return 0;
2663     }
2664     return 1;
2665 }