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         default:
 192             break;
 193         }
 194     }
 195     return UI_method_get_reader(UI_OpenSSL())(ui, uis);
 196 }
 197
 198 static int ui_write(UI *ui, UI_STRING *uis)
 199 {
 200     if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 201         && UI_get0_user_data(ui)) {
 202         switch (UI_get_string_type(uis)) {
 203         case UIT_PROMPT:
 204         case UIT_VERIFY:
 205             {
 206                 const char *password =
 207                     ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 208                 if (password && password[0] != '\0')
 209                     return 1;
 210             }
 211         default:
 212             break;
 213         }
 214     }
 215     return UI_method_get_writer(UI_OpenSSL())(ui, uis);
 216 }
 217
 218 static int ui_close(UI *ui)
 219 {
 220     return UI_method_get_closer(UI_OpenSSL())(ui);
 221 }
 222
 223 int setup_ui_method(void)
 224 {
 225     ui_method = UI_create_method("OpenSSL application user interface");
 226     UI_method_set_opener(ui_method, ui_open);
 227     UI_method_set_reader(ui_method, ui_read);
 228     UI_method_set_writer(ui_method, ui_write);
 229     UI_method_set_closer(ui_method, ui_close);
 230     return 0;
 231 }
 232
 233 void destroy_ui_method(void)
 234 {
 235     if (ui_method) {
 236         UI_destroy_method(ui_method);
 237         ui_method = NULL;
 238     }
 239 }
 240 #endif
 241
 242 int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_tmp)
 243 {
 244     int res = 0;
 245 #ifndef OPENSSL_NO_UI
 246     UI *ui = NULL;
 247     const char *prompt_info = NULL;
 248 #endif
 249     const char *password = NULL;
 250     PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
 251
 252     if (cb_data) {
 253         if (cb_data->password)
 254             password = cb_data->password;
 255 #ifndef OPENSSL_NO_UI
 256         if (cb_data->prompt_info)
 257             prompt_info = cb_data->prompt_info;
 258 #endif
 259     }
 260
 261     if (password) {
 262         res = strlen(password);
 263         if (res > bufsiz)
 264             res = bufsiz;
 265         memcpy(buf, password, res);
 266         return res;
 267     }
 268
 269 #ifndef OPENSSL_NO_UI
 270     ui = UI_new_method(ui_method);
 271     if (ui) {
 272         int ok = 0;
 273         char *buff = NULL;
 274         int ui_flags = 0;
 275         char *prompt;
 276
 277         prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
 278         if (!prompt) {
 279             BIO_printf(bio_err, "Out of memory\n");
 280             UI_free(ui);
 281             return 0;
 282         }
 283
 284         ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
 285         UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
 286
 287         if (ok >= 0)
 288             ok = UI_add_input_string(ui, prompt, ui_flags, buf,
 289                                      PW_MIN_LENGTH, bufsiz - 1);
 290         if (ok >= 0 && verify) {
 291             buff = app_malloc(bufsiz, "password buffer");
 292             ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
 293                                       PW_MIN_LENGTH, bufsiz - 1, buf);
 294         }
 295         if (ok >= 0)
 296             do {
 297                 ok = UI_process(ui);
 298             }
 299             while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
 300
 301         OPENSSL_clear_free(buff, (unsigned int)bufsiz);
 302
 303         if (ok >= 0)
 304             res = strlen(buf);
 305         if (ok == -1) {
 306             BIO_printf(bio_err, "User interface error\n");
 307             ERR_print_errors(bio_err);
 308             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 309             res = 0;
 310         }
 311         if (ok == -2) {
 312             BIO_printf(bio_err, "aborted!\n");
 313             OPENSSL_cleanse(buf, (unsigned int)bufsiz);
 314             res = 0;
 315         }
 316         UI_free(ui);
 317         OPENSSL_free(prompt);
 318     }
 319 #endif
 320     return res;
 321 }
 322
 323 static char *app_get_pass(char *arg, int keepbio);
 324
 325 int app_passwd(char *arg1, char *arg2, char **pass1, char **pass2)
 326 {
 327     int same;
 328     if (!arg2 || !arg1 || strcmp(arg1, arg2))
 329         same = 0;
 330     else
 331         same = 1;
 332     if (arg1) {
 333         *pass1 = app_get_pass(arg1, same);
 334         if (!*pass1)
 335             return 0;
 336     } else if (pass1)
 337         *pass1 = NULL;
 338     if (arg2) {
 339         *pass2 = app_get_pass(arg2, same ? 2 : 0);
 340         if (!*pass2)
 341             return 0;
 342     } else if (pass2)
 343         *pass2 = NULL;
 344     return 1;
 345 }
 346
 347 static char *app_get_pass(char *arg, int keepbio)
 348 {
 349     char *tmp, tpass[APP_PASS_LEN];
 350     static BIO *pwdbio = NULL;
 351     int i;
 352
 353     if (strncmp(arg, "pass:", 5) == 0)
 354         return OPENSSL_strdup(arg + 5);
 355     if (strncmp(arg, "env:", 4) == 0) {
 356         tmp = getenv(arg + 4);
 357         if (!tmp) {
 358             BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
 359             return NULL;
 360         }
 361         return OPENSSL_strdup(tmp);
 362     }
 363     if (!keepbio || !pwdbio) {
 364         if (strncmp(arg, "file:", 5) == 0) {
 365             pwdbio = BIO_new_file(arg + 5, "r");
 366             if (!pwdbio) {
 367                 BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
 368                 return NULL;
 369             }
 370 #if !defined(_WIN32)
 371             /*
 372              * Under _WIN32, which covers even Win64 and CE, file
 373              * descriptors referenced by BIO_s_fd are not inherited
 374              * by child process and therefore below is not an option.
 375              * It could have been an option if bss_fd.c was operating
 376              * on real Windows descriptors, such as those obtained
 377              * with CreateFile.
 378              */
 379         } else if (strncmp(arg, "fd:", 3) == 0) {
 380             BIO *btmp;
 381             i = atoi(arg + 3);
 382             if (i >= 0)
 383                 pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 384             if ((i < 0) || !pwdbio) {
 385                 BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
 386                 return NULL;
 387             }
 388             /*
 389              * Can't do BIO_gets on an fd BIO so add a buffering BIO
 390              */
 391             btmp = BIO_new(BIO_f_buffer());
 392             pwdbio = BIO_push(btmp, pwdbio);
 393 #endif
 394         } else if (strcmp(arg, "stdin") == 0) {
 395             pwdbio = dup_bio_in(FORMAT_TEXT);
 396             if (!pwdbio) {
 397                 BIO_printf(bio_err, "Can't open BIO for stdin\n");
 398                 return NULL;
 399             }
 400         } else {
 401             BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
 402             return NULL;
 403         }
 404     }
 405     i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 406     if (keepbio != 1) {
 407         BIO_free_all(pwdbio);
 408         pwdbio = NULL;
 409     }
 410     if (i <= 0) {
 411         BIO_printf(bio_err, "Error reading password from BIO\n");
 412         return NULL;
 413     }
 414     tmp = strchr(tpass, '\n');
 415     if (tmp)
 416         *tmp = 0;
 417     return OPENSSL_strdup(tpass);
 418 }
 419
 420 static CONF *app_load_config_(BIO *in, const char *filename)
 421 {
 422     long errorline = -1;
 423     CONF *conf;
 424     int i;
 425
 426     conf = NCONF_new(NULL);
 427     i = NCONF_load_bio(conf, in, &errorline);
 428     if (i > 0)
 429         return conf;
 430
 431     if (errorline <= 0)
 432         BIO_printf(bio_err, "%s: Can't load config file \"%s\"\n",
 433                    opt_getprog(), filename);
 434     else
 435         BIO_printf(bio_err, "%s: Error on line %ld of config file \"%s\"\n",
 436                    opt_getprog(), errorline, filename);
 437     NCONF_free(conf);
 438     return NULL;
 439 }
 440 CONF *app_load_config(const char *filename)
 441 {
 442     BIO *in;
 443     CONF *conf;
 444
 445     in = bio_open_default(filename, 'r', FORMAT_TEXT);
 446     if (in == NULL)
 447         return NULL;
 448
 449     conf = app_load_config_(in, filename);
 450     BIO_free(in);
 451     return conf;
 452 }
 453 CONF *app_load_config_quiet(const char *filename)
 454 {
 455     BIO *in;
 456     CONF *conf;
 457
 458     in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
 459     if (in == NULL)
 460         return NULL;
 461
 462     conf = app_load_config_(in, filename);
 463     BIO_free(in);
 464     return conf;
 465 }
 466
 467 int app_load_modules(const CONF *config)
 468 {
 469     CONF *to_free = NULL;
 470
 471     if (config == NULL)
 472         config = to_free = app_load_config_quiet(default_config_file);
 473     if (config == NULL)
 474         return 1;
 475
 476     if (CONF_modules_load(config, NULL, 0) <= 0) {
 477         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
 478         ERR_print_errors(bio_err);
 479         NCONF_free(to_free);
 480         return 0;
 481     }
 482     NCONF_free(to_free);
 483     return 1;
 484 }
 485
 486 int add_oid_section(CONF *conf)
 487 {
 488     char *p;
 489     STACK_OF(CONF_VALUE) *sktmp;
 490     CONF_VALUE *cnf;
 491     int i;
 492
 493     if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
 494         ERR_clear_error();
 495         return 1;
 496     }
 497     if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
 498         BIO_printf(bio_err, "problem loading oid section %s\n", p);
 499         return 0;
 500     }
 501     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 502         cnf = sk_CONF_VALUE_value(sktmp, i);
 503         if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 504             BIO_printf(bio_err, "problem creating object %s=%s\n",
 505                        cnf->name, cnf->value);
 506             return 0;
 507         }
 508     }
 509     return 1;
 510 }
 511
 512 static int load_pkcs12(BIO *in, const char *desc,
 513                        pem_password_cb *pem_cb, void *cb_data,
 514                        EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 515 {
 516     const char *pass;
 517     char tpass[PEM_BUFSIZE];
 518     int len, ret = 0;
 519     PKCS12 *p12;
 520     p12 = d2i_PKCS12_bio(in, NULL);
 521     if (p12 == NULL) {
 522         BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
 523         goto die;
 524     }
 525     /* See if an empty password will do */
 526     if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0))
 527         pass = "";
 528     else {
 529         if (!pem_cb)
 530             pem_cb = (pem_password_cb *)password_callback;
 531         len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
 532         if (len < 0) {
 533             BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
 534             goto die;
 535         }
 536         if (len < PEM_BUFSIZE)
 537             tpass[len] = 0;
 538         if (!PKCS12_verify_mac(p12, tpass, len)) {
 539             BIO_printf(bio_err,
 540                        "Mac verify error (wrong password?) in PKCS12 file for %s\n",
 541                        desc);
 542             goto die;
 543         }
 544         pass = tpass;
 545     }
 546     ret = PKCS12_parse(p12, pass, pkey, cert, ca);
 547  die:
 548     PKCS12_free(p12);
 549     return ret;
 550 }
 551
 552 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 553 static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
 554 {
 555     char *host = NULL, *port = NULL, *path = NULL;
 556     BIO *bio = NULL;
 557     OCSP_REQ_CTX *rctx = NULL;
 558     int use_ssl, rv = 0;
 559     if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
 560         goto err;
 561     if (use_ssl) {
 562         BIO_puts(bio_err, "https not supported\n");
 563         goto err;
 564     }
 565     bio = BIO_new_connect(host);
 566     if (!bio || !BIO_set_conn_port(bio, port))
 567         goto err;
 568     rctx = OCSP_REQ_CTX_new(bio, 1024);
 569     if (rctx == NULL)
 570         goto err;
 571     if (!OCSP_REQ_CTX_http(rctx, "GET", path))
 572         goto err;
 573     if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
 574         goto err;
 575     if (pcert) {
 576         do {
 577             rv = X509_http_nbio(rctx, pcert);
 578         } while (rv == -1);
 579     } else {
 580         do {
 581             rv = X509_CRL_http_nbio(rctx, pcrl);
 582         } while (rv == -1);
 583     }
 584
 585  err:
 586     OPENSSL_free(host);
 587     OPENSSL_free(path);
 588     OPENSSL_free(port);
 589     if (bio)
 590         BIO_free_all(bio);
 591     OCSP_REQ_CTX_free(rctx);
 592     if (rv != 1) {
 593         BIO_printf(bio_err, "Error loading %s from %s\n",
 594                    pcert ? "certificate" : "CRL", url);
 595         ERR_print_errors(bio_err);
 596     }
 597     return rv;
 598 }
 599 #endif
 600
 601 X509 *load_cert(const char *file, int format, const char *cert_descrip)
 602 {
 603     X509 *x = NULL;
 604     BIO *cert;
 605
 606     if (format == FORMAT_HTTP) {
 607 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 608         load_cert_crl_http(file, &x, NULL);
 609 #endif
 610         return x;
 611     }
 612
 613     if (file == NULL) {
 614         unbuffer(stdin);
 615         cert = dup_bio_in(format);
 616     } else
 617         cert = bio_open_default(file, 'r', format);
 618     if (cert == NULL)
 619         goto end;
 620
 621     if (format == FORMAT_ASN1)
 622         x = d2i_X509_bio(cert, NULL);
 623     else if (format == FORMAT_PEM)
 624         x = PEM_read_bio_X509_AUX(cert, NULL,
 625                                   (pem_password_cb *)password_callback, NULL);
 626     else if (format == FORMAT_PKCS12) {
 627         if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
 628             goto end;
 629     } else {
 630         BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
 631         goto end;
 632     }
 633  end:
 634     if (x == NULL) {
 635         BIO_printf(bio_err, "unable to load certificate\n");
 636         ERR_print_errors(bio_err);
 637     }
 638     BIO_free(cert);
 639     return (x);
 640 }
 641
 642 X509_CRL *load_crl(const char *infile, int format)
 643 {
 644     X509_CRL *x = NULL;
 645     BIO *in = NULL;
 646
 647     if (format == FORMAT_HTTP) {
 648 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 649         load_cert_crl_http(infile, NULL, &x);
 650 #endif
 651         return x;
 652     }
 653
 654     in = bio_open_default(infile, 'r', format);
 655     if (in == NULL)
 656         goto end;
 657     if (format == FORMAT_ASN1)
 658         x = d2i_X509_CRL_bio(in, NULL);
 659     else if (format == FORMAT_PEM)
 660         x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 661     else {
 662         BIO_printf(bio_err, "bad input format specified for input crl\n");
 663         goto end;
 664     }
 665     if (x == NULL) {
 666         BIO_printf(bio_err, "unable to load CRL\n");
 667         ERR_print_errors(bio_err);
 668         goto end;
 669     }
 670
 671  end:
 672     BIO_free(in);
 673     return (x);
 674 }
 675
 676 EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
 677                    const char *pass, ENGINE *e, const char *key_descrip)
 678 {
 679     BIO *key = NULL;
 680     EVP_PKEY *pkey = NULL;
 681     PW_CB_DATA cb_data;
 682
 683     cb_data.password = pass;
 684     cb_data.prompt_info = file;
 685
 686     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 687         BIO_printf(bio_err, "no keyfile specified\n");
 688         goto end;
 689     }
 690     if (format == FORMAT_ENGINE) {
 691         if (e == NULL)
 692             BIO_printf(bio_err, "no engine specified\n");
 693         else {
 694 #ifndef OPENSSL_NO_ENGINE
 695             pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
 696             if (pkey == NULL) {
 697                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 698                 ERR_print_errors(bio_err);
 699             }
 700 #else
 701             BIO_printf(bio_err, "engines not supported\n");
 702 #endif
 703         }
 704         goto end;
 705     }
 706     if (file == NULL && maybe_stdin) {
 707         unbuffer(stdin);
 708         key = dup_bio_in(format);
 709     } else
 710         key = bio_open_default(file, 'r', format);
 711     if (key == NULL)
 712         goto end;
 713     if (format == FORMAT_ASN1) {
 714         pkey = d2i_PrivateKey_bio(key, NULL);
 715     } else if (format == FORMAT_PEM) {
 716         pkey = PEM_read_bio_PrivateKey(key, NULL,
 717                                        (pem_password_cb *)password_callback,
 718                                        &cb_data);
 719     }
 720     else if (format == FORMAT_PKCS12) {
 721         if (!load_pkcs12(key, key_descrip,
 722                          (pem_password_cb *)password_callback, &cb_data,
 723                          &pkey, NULL, NULL))
 724             goto end;
 725     }
 726 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
 727     else if (format == FORMAT_MSBLOB)
 728         pkey = b2i_PrivateKey_bio(key);
 729     else if (format == FORMAT_PVK)
 730         pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
 731                            &cb_data);
 732 #endif
 733     else {
 734         BIO_printf(bio_err, "bad input format specified for key file\n");
 735         goto end;
 736     }
 737  end:
 738     BIO_free(key);
 739     if (pkey == NULL) {
 740         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 741         ERR_print_errors(bio_err);
 742     }
 743     return (pkey);
 744 }
 745
 746 EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
 747                       const char *pass, ENGINE *e, const char *key_descrip)
 748 {
 749     BIO *key = NULL;
 750     EVP_PKEY *pkey = NULL;
 751     PW_CB_DATA cb_data;
 752
 753     cb_data.password = pass;
 754     cb_data.prompt_info = file;
 755
 756     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 757         BIO_printf(bio_err, "no keyfile specified\n");
 758         goto end;
 759     }
 760     if (format == FORMAT_ENGINE) {
 761         if (e == NULL)
 762             BIO_printf(bio_err, "no engine specified\n");
 763         else {
 764 #ifndef OPENSSL_NO_ENGINE
 765             pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
 766             if (pkey == NULL) {
 767                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 768                 ERR_print_errors(bio_err);
 769             }
 770 #else
 771             BIO_printf(bio_err, "engines not supported\n");
 772 #endif
 773         }
 774         goto end;
 775     }
 776     if (file == NULL && maybe_stdin) {
 777         unbuffer(stdin);
 778         key = dup_bio_in(format);
 779     } else
 780         key = bio_open_default(file, 'r', format);
 781     if (key == NULL)
 782         goto end;
 783     if (format == FORMAT_ASN1) {
 784         pkey = d2i_PUBKEY_bio(key, NULL);
 785     }
 786     else if (format == FORMAT_ASN1RSA) {
 787 #ifndef OPENSSL_NO_RSA
 788         RSA *rsa;
 789         rsa = d2i_RSAPublicKey_bio(key, NULL);
 790         if (rsa) {
 791             pkey = EVP_PKEY_new();
 792             if (pkey != NULL)
 793                 EVP_PKEY_set1_RSA(pkey, rsa);
 794             RSA_free(rsa);
 795         } else
 796 #else
 797         BIO_printf(bio_err, "RSA keys not supported\n");
 798 #endif
 799             pkey = NULL;
 800     } else if (format == FORMAT_PEMRSA) {
 801 #ifndef OPENSSL_NO_RSA
 802         RSA *rsa;
 803         rsa = PEM_read_bio_RSAPublicKey(key, NULL,
 804                                         (pem_password_cb *)password_callback,
 805                                         &cb_data);
 806         if (rsa != NULL) {
 807             pkey = EVP_PKEY_new();
 808             if (pkey != NULL)
 809                 EVP_PKEY_set1_RSA(pkey, rsa);
 810             RSA_free(rsa);
 811         } else
 812 #else
 813         BIO_printf(bio_err, "RSA keys not supported\n");
 814 #endif
 815             pkey = NULL;
 816     }
 817     else if (format == FORMAT_PEM) {
 818         pkey = PEM_read_bio_PUBKEY(key, NULL,
 819                                    (pem_password_cb *)password_callback,
 820                                    &cb_data);
 821     }
 822 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
 823     else if (format == FORMAT_MSBLOB)
 824         pkey = b2i_PublicKey_bio(key);
 825 #endif
 826  end:
 827     BIO_free(key);
 828     if (pkey == NULL)
 829         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 830     return (pkey);
 831 }
 832
 833 static int load_certs_crls(const char *file, int format,
 834                            const char *pass, const char *desc,
 835                            STACK_OF(X509) **pcerts,
 836                            STACK_OF(X509_CRL) **pcrls)
 837 {
 838     int i;
 839     BIO *bio;
 840     STACK_OF(X509_INFO) *xis = NULL;
 841     X509_INFO *xi;
 842     PW_CB_DATA cb_data;
 843     int rv = 0;
 844
 845     cb_data.password = pass;
 846     cb_data.prompt_info = file;
 847
 848     if (format != FORMAT_PEM) {
 849         BIO_printf(bio_err, "bad input format specified for %s\n", desc);
 850         return 0;
 851     }
 852
 853     bio = bio_open_default(file, 'r', FORMAT_PEM);
 854     if (bio == NULL)
 855         return 0;
 856
 857     xis = PEM_X509_INFO_read_bio(bio, NULL,
 858                                  (pem_password_cb *)password_callback,
 859                                  &cb_data);
 860
 861     BIO_free(bio);
 862
 863     if (pcerts && *pcerts == NULL) {
 864         *pcerts = sk_X509_new_null();
 865         if (!*pcerts)
 866             goto end;
 867     }
 868
 869     if (pcrls && *pcrls == NULL) {
 870         *pcrls = sk_X509_CRL_new_null();
 871         if (!*pcrls)
 872             goto end;
 873     }
 874
 875     for (i = 0; i < sk_X509_INFO_num(xis); i++) {
 876         xi = sk_X509_INFO_value(xis, i);
 877         if (xi->x509 && pcerts) {
 878             if (!sk_X509_push(*pcerts, xi->x509))
 879                 goto end;
 880             xi->x509 = NULL;
 881         }
 882         if (xi->crl && pcrls) {
 883             if (!sk_X509_CRL_push(*pcrls, xi->crl))
 884                 goto end;
 885             xi->crl = NULL;
 886         }
 887     }
 888
 889     if (pcerts && sk_X509_num(*pcerts) > 0)
 890         rv = 1;
 891
 892     if (pcrls && sk_X509_CRL_num(*pcrls) > 0)
 893         rv = 1;
 894
 895  end:
 896
 897     sk_X509_INFO_pop_free(xis, X509_INFO_free);
 898
 899     if (rv == 0) {
 900         if (pcerts) {
 901             sk_X509_pop_free(*pcerts, X509_free);
 902             *pcerts = NULL;
 903         }
 904         if (pcrls) {
 905             sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
 906             *pcrls = NULL;
 907         }
 908         BIO_printf(bio_err, "unable to load %s\n",
 909                    pcerts ? "certificates" : "CRLs");
 910         ERR_print_errors(bio_err);
 911     }
 912     return rv;
 913 }
 914
 915 void* app_malloc(int sz, const char *what)
 916 {
 917     void *vp = OPENSSL_malloc(sz);
 918
 919     if (vp == NULL) {
 920         BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
 921                 opt_getprog(), sz, what);
 922         ERR_print_errors(bio_err);
 923         exit(1);
 924     }
 925     return vp;
 926 }
 927
 928 /*
 929  * Initialize or extend, if *certs != NULL, a certificate stack.
 930  */
 931 int load_certs(const char *file, STACK_OF(X509) **certs, int format,
 932                const char *pass, const char *desc)
 933 {
 934     return load_certs_crls(file, format, pass, desc, certs, NULL);
 935 }
 936
 937 /*
 938  * Initialize or extend, if *crls != NULL, a certificate stack.
 939  */
 940 int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
 941               const char *pass, const char *desc)
 942 {
 943     return load_certs_crls(file, format, pass, desc, NULL, crls);
 944 }
 945
 946 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 947 /* Return error for unknown extensions */
 948 #define X509V3_EXT_DEFAULT              0
 949 /* Print error for unknown extensions */
 950 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 951 /* ASN1 parse unknown extensions */
 952 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 953 /* BIO_dump unknown extensions */
 954 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 955
 956 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 957                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 958
 959 int set_cert_ex(unsigned long *flags, const char *arg)
 960 {
 961     static const NAME_EX_TBL cert_tbl[] = {
 962         {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
 963         {"ca_default", X509_FLAG_CA, 0xffffffffl},
 964         {"no_header", X509_FLAG_NO_HEADER, 0},
 965         {"no_version", X509_FLAG_NO_VERSION, 0},
 966         {"no_serial", X509_FLAG_NO_SERIAL, 0},
 967         {"no_signame", X509_FLAG_NO_SIGNAME, 0},
 968         {"no_validity", X509_FLAG_NO_VALIDITY, 0},
 969         {"no_subject", X509_FLAG_NO_SUBJECT, 0},
 970         {"no_issuer", X509_FLAG_NO_ISSUER, 0},
 971         {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
 972         {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
 973         {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
 974         {"no_aux", X509_FLAG_NO_AUX, 0},
 975         {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
 976         {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
 977         {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 978         {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 979         {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 980         {NULL, 0, 0}
 981     };
 982     return set_multi_opts(flags, arg, cert_tbl);
 983 }
 984
 985 int set_name_ex(unsigned long *flags, const char *arg)
 986 {
 987     static const NAME_EX_TBL ex_tbl[] = {
 988         {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
 989         {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
 990         {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
 991         {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
 992         {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
 993         {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
 994         {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
 995         {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
 996         {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
 997         {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
 998         {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
 999         {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1000         {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1001         {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1002         {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1003         {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1004         {"dn_rev", XN_FLAG_DN_REV, 0},
1005         {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1006         {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1007         {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1008         {"align", XN_FLAG_FN_ALIGN, 0},
1009         {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1010         {"space_eq", XN_FLAG_SPC_EQ, 0},
1011         {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1012         {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1013         {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1014         {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1015         {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1016         {NULL, 0, 0}
1017     };
1018     if (set_multi_opts(flags, arg, ex_tbl) == 0)
1019         return 0;
1020     if ((*flags & XN_FLAG_SEP_MASK) == 0)
1021         *flags |= XN_FLAG_SEP_CPLUS_SPC;
1022     return 1;
1023 }
1024
1025 int set_ext_copy(int *copy_type, const char *arg)
1026 {
1027     if (strcasecmp(arg, "none") == 0)
1028         *copy_type = EXT_COPY_NONE;
1029     else if (strcasecmp(arg, "copy") == 0)
1030         *copy_type = EXT_COPY_ADD;
1031     else if (strcasecmp(arg, "copyall") == 0)
1032         *copy_type = EXT_COPY_ALL;
1033     else
1034         return 0;
1035     return 1;
1036 }
1037
1038 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1039 {
1040     STACK_OF(X509_EXTENSION) *exts = NULL;
1041     X509_EXTENSION *ext, *tmpext;
1042     ASN1_OBJECT *obj;
1043     int i, idx, ret = 0;
1044     if (!x || !req || (copy_type == EXT_COPY_NONE))
1045         return 1;
1046     exts = X509_REQ_get_extensions(req);
1047
1048     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1049         ext = sk_X509_EXTENSION_value(exts, i);
1050         obj = X509_EXTENSION_get_object(ext);
1051         idx = X509_get_ext_by_OBJ(x, obj, -1);
1052         /* Does extension exist? */
1053         if (idx != -1) {
1054             /* If normal copy don't override existing extension */
1055             if (copy_type == EXT_COPY_ADD)
1056                 continue;
1057             /* Delete all extensions of same type */
1058             do {
1059                 tmpext = X509_get_ext(x, idx);
1060                 X509_delete_ext(x, idx);
1061                 X509_EXTENSION_free(tmpext);
1062                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1063             } while (idx != -1);
1064         }
1065         if (!X509_add_ext(x, ext, -1))
1066             goto end;
1067     }
1068
1069     ret = 1;
1070
1071  end:
1072
1073     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1074
1075     return ret;
1076 }
1077
1078 static int set_multi_opts(unsigned long *flags, const char *arg,
1079                           const NAME_EX_TBL * in_tbl)
1080 {
1081     STACK_OF(CONF_VALUE) *vals;
1082     CONF_VALUE *val;
1083     int i, ret = 1;
1084     if (!arg)
1085         return 0;
1086     vals = X509V3_parse_list(arg);
1087     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1088         val = sk_CONF_VALUE_value(vals, i);
1089         if (!set_table_opts(flags, val->name, in_tbl))
1090             ret = 0;
1091     }
1092     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1093     return ret;
1094 }
1095
1096 static int set_table_opts(unsigned long *flags, const char *arg,
1097                           const NAME_EX_TBL * in_tbl)
1098 {
1099     char c;
1100     const NAME_EX_TBL *ptbl;
1101     c = arg[0];
1102
1103     if (c == '-') {
1104         c = 0;
1105         arg++;
1106     } else if (c == '+') {
1107         c = 1;
1108         arg++;
1109     } else
1110         c = 1;
1111
1112     for (ptbl = in_tbl; ptbl->name; ptbl++) {
1113         if (strcasecmp(arg, ptbl->name) == 0) {
1114             *flags &= ~ptbl->mask;
1115             if (c)
1116                 *flags |= ptbl->flag;
1117             else
1118                 *flags &= ~ptbl->flag;
1119             return 1;
1120         }
1121     }
1122     return 0;
1123 }
1124
1125 void print_name(BIO *out, const char *title, X509_NAME *nm,
1126                 unsigned long lflags)
1127 {
1128     char *buf;
1129     char mline = 0;
1130     int indent = 0;
1131
1132     if (title)
1133         BIO_puts(out, title);
1134     if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1135         mline = 1;
1136         indent = 4;
1137     }
1138     if (lflags == XN_FLAG_COMPAT) {
1139         buf = X509_NAME_oneline(nm, 0, 0);
1140         BIO_puts(out, buf);
1141         BIO_puts(out, "\n");
1142         OPENSSL_free(buf);
1143     } else {
1144         if (mline)
1145             BIO_puts(out, "\n");
1146         X509_NAME_print_ex(out, nm, indent, lflags);
1147         BIO_puts(out, "\n");
1148     }
1149 }
1150
1151 void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1152                       int len, unsigned char *buffer)
1153 {
1154     BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1155     if (BN_is_zero(in))
1156         BIO_printf(out, "\n\t0x00");
1157     else {
1158         int i, l;
1159
1160         l = BN_bn2bin(in, buffer);
1161         for (i = 0; i < l; i++) {
1162             if ((i % 10) == 0)
1163                 BIO_printf(out, "\n\t");
1164             if (i < l - 1)
1165                 BIO_printf(out, "0x%02X, ", buffer[i]);
1166             else
1167                 BIO_printf(out, "0x%02X", buffer[i]);
1168         }
1169     }
1170     BIO_printf(out, "\n    };\n");
1171 }
1172 void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1173 {
1174     int i;
1175
1176     BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1177     for (i = 0; i < len; i++) {
1178         if ((i % 10) == 0)
1179             BIO_printf(out, "\n    ");
1180         if (i < len - 1)
1181             BIO_printf(out, "0x%02X, ", d[i]);
1182         else
1183             BIO_printf(out, "0x%02X", d[i]);
1184     }
1185     BIO_printf(out, "\n};\n");
1186 }
1187
1188 X509_STORE *setup_verify(char *CAfile, char *CApath, int noCAfile, int noCApath)
1189 {
1190     X509_STORE *store = X509_STORE_new();
1191     X509_LOOKUP *lookup;
1192
1193     if (store == NULL)
1194         goto end;
1195
1196     if (CAfile != NULL || !noCAfile) {
1197         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1198         if (lookup == NULL)
1199             goto end;
1200         if (CAfile) {
1201             if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1202                 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1203                 goto end;
1204             }
1205         } else
1206             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1207     }
1208
1209     if (CApath != NULL || !noCApath) {
1210         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1211         if (lookup == NULL)
1212             goto end;
1213         if (CApath) {
1214             if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1215                 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1216                 goto end;
1217             }
1218         } else
1219             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1220     }
1221
1222     ERR_clear_error();
1223     return store;
1224  end:
1225     X509_STORE_free(store);
1226     return NULL;
1227 }
1228
1229 #ifndef OPENSSL_NO_ENGINE
1230 /* Try to load an engine in a shareable library */
1231 static ENGINE *try_load_engine(const char *engine)
1232 {
1233     ENGINE *e = ENGINE_by_id("dynamic");
1234     if (e) {
1235         if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1236             || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1237             ENGINE_free(e);
1238             e = NULL;
1239         }
1240     }
1241     return e;
1242 }
1243
1244 ENGINE *setup_engine(const char *engine, int debug)
1245 {
1246     ENGINE *e = NULL;
1247
1248     if (engine) {
1249         if (strcmp(engine, "auto") == 0) {
1250             BIO_printf(bio_err, "enabling auto ENGINE support\n");
1251             ENGINE_register_all_complete();
1252             return NULL;
1253         }
1254         if ((e = ENGINE_by_id(engine)) == NULL
1255             && (e = try_load_engine(engine)) == NULL) {
1256             BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1257             ERR_print_errors(bio_err);
1258             return NULL;
1259         }
1260         if (debug) {
1261             ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1262         }
1263         ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1264         if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1265             BIO_printf(bio_err, "can't use that engine\n");
1266             ERR_print_errors(bio_err);
1267             ENGINE_free(e);
1268             return NULL;
1269         }
1270
1271         BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1272
1273         /* Free our "structural" reference. */
1274         ENGINE_free(e);
1275     }
1276     return e;
1277 }
1278 #endif
1279
1280 static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1281 {
1282     const char *n;
1283
1284     n = a[DB_serial];
1285     while (*n == '0')
1286         n++;
1287     return OPENSSL_LH_strhash(n);
1288 }
1289
1290 static int index_serial_cmp(const OPENSSL_CSTRING *a,
1291                             const OPENSSL_CSTRING *b)
1292 {
1293     const char *aa, *bb;
1294
1295     for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1296     for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1297     return (strcmp(aa, bb));
1298 }
1299
1300 static int index_name_qual(char **a)
1301 {
1302     return (a[0][0] == 'V');
1303 }
1304
1305 static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1306 {
1307     return OPENSSL_LH_strhash(a[DB_name]);
1308 }
1309
1310 int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1311 {
1312     return (strcmp(a[DB_name], b[DB_name]));
1313 }
1314
1315 static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1316 static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1317 static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1318 static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1319 #undef BSIZE
1320 #define BSIZE 256
1321 BIGNUM *load_serial(char *serialfile, int create, ASN1_INTEGER **retai)
1322 {
1323     BIO *in = NULL;
1324     BIGNUM *ret = NULL;
1325     char buf[1024];
1326     ASN1_INTEGER *ai = NULL;
1327
1328     ai = ASN1_INTEGER_new();
1329     if (ai == NULL)
1330         goto err;
1331
1332     in = BIO_new_file(serialfile, "r");
1333     if (in == NULL) {
1334         if (!create) {
1335             perror(serialfile);
1336             goto err;
1337         }
1338         ERR_clear_error();
1339         ret = BN_new();
1340         if (ret == NULL || !rand_serial(ret, ai))
1341             BIO_printf(bio_err, "Out of memory\n");
1342     } else {
1343         if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1344             BIO_printf(bio_err, "unable to load number from %s\n",
1345                        serialfile);
1346             goto err;
1347         }
1348         ret = ASN1_INTEGER_to_BN(ai, NULL);
1349         if (ret == NULL) {
1350             BIO_printf(bio_err,
1351                        "error converting number from bin to BIGNUM\n");
1352             goto err;
1353         }
1354     }
1355
1356     if (ret && retai) {
1357         *retai = ai;
1358         ai = NULL;
1359     }
1360  err:
1361     BIO_free(in);
1362     ASN1_INTEGER_free(ai);
1363     return (ret);
1364 }
1365
1366 int save_serial(char *serialfile, char *suffix, BIGNUM *serial,
1367                 ASN1_INTEGER **retai)
1368 {
1369     char buf[1][BSIZE];
1370     BIO *out = NULL;
1371     int ret = 0;
1372     ASN1_INTEGER *ai = NULL;
1373     int j;
1374
1375     if (suffix == NULL)
1376         j = strlen(serialfile);
1377     else
1378         j = strlen(serialfile) + strlen(suffix) + 1;
1379     if (j >= BSIZE) {
1380         BIO_printf(bio_err, "file name too long\n");
1381         goto err;
1382     }
1383
1384     if (suffix == NULL)
1385         OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1386     else {
1387 #ifndef OPENSSL_SYS_VMS
1388         j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, suffix);
1389 #else
1390         j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, suffix);
1391 #endif
1392     }
1393     out = BIO_new_file(buf[0], "w");
1394     if (out == NULL) {
1395         ERR_print_errors(bio_err);
1396         goto err;
1397     }
1398
1399     if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1400         BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1401         goto err;
1402     }
1403     i2a_ASN1_INTEGER(out, ai);
1404     BIO_puts(out, "\n");
1405     ret = 1;
1406     if (retai) {
1407         *retai = ai;
1408         ai = NULL;
1409     }
1410  err:
1411     BIO_free_all(out);
1412     ASN1_INTEGER_free(ai);
1413     return (ret);
1414 }
1415
1416 int rotate_serial(char *serialfile, char *new_suffix, char *old_suffix)
1417 {
1418     char buf[2][BSIZE];
1419     int i, j;
1420
1421     i = strlen(serialfile) + strlen(old_suffix);
1422     j = strlen(serialfile) + strlen(new_suffix);
1423     if (i > j)
1424         j = i;
1425     if (j + 1 >= BSIZE) {
1426         BIO_printf(bio_err, "file name too long\n");
1427         goto err;
1428     }
1429 #ifndef OPENSSL_SYS_VMS
1430     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", serialfile, new_suffix);
1431     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", serialfile, old_suffix);
1432 #else
1433     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", serialfile, new_suffix);
1434     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", serialfile, old_suffix);
1435 #endif
1436     if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1437 #ifdef ENOTDIR
1438         && errno != ENOTDIR
1439 #endif
1440         ) {
1441         BIO_printf(bio_err,
1442                    "unable to rename %s to %s\n", serialfile, buf[1]);
1443         perror("reason");
1444         goto err;
1445     }
1446     if (rename(buf[0], serialfile) < 0) {
1447         BIO_printf(bio_err,
1448                    "unable to rename %s to %s\n", buf[0], serialfile);
1449         perror("reason");
1450         rename(buf[1], serialfile);
1451         goto err;
1452     }
1453     return 1;
1454  err:
1455     return 0;
1456 }
1457
1458 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1459 {
1460     BIGNUM *btmp;
1461     int ret = 0;
1462
1463     if (b)
1464         btmp = b;
1465     else
1466         btmp = BN_new();
1467
1468     if (btmp == NULL)
1469         return 0;
1470
1471     if (!BN_pseudo_rand(btmp, SERIAL_RAND_BITS, 0, 0))
1472         goto error;
1473     if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1474         goto error;
1475
1476     ret = 1;
1477
1478  error:
1479
1480     if (btmp != b)
1481         BN_free(btmp);
1482
1483     return ret;
1484 }
1485
1486 CA_DB *load_index(char *dbfile, DB_ATTR *db_attr)
1487 {
1488     CA_DB *retdb = NULL;
1489     TXT_DB *tmpdb = NULL;
1490     BIO *in;
1491     CONF *dbattr_conf = NULL;
1492     char buf[BSIZE];
1493
1494     in = BIO_new_file(dbfile, "r");
1495     if (in == NULL) {
1496         ERR_print_errors(bio_err);
1497         goto err;
1498     }
1499     if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1500         goto err;
1501
1502 #ifndef OPENSSL_SYS_VMS
1503     BIO_snprintf(buf, sizeof buf, "%s.attr", dbfile);
1504 #else
1505     BIO_snprintf(buf, sizeof buf, "%s-attr", dbfile);
1506 #endif
1507     dbattr_conf = app_load_config(buf);
1508
1509     retdb = app_malloc(sizeof(*retdb), "new DB");
1510     retdb->db = tmpdb;
1511     tmpdb = NULL;
1512     if (db_attr)
1513         retdb->attributes = *db_attr;
1514     else {
1515         retdb->attributes.unique_subject = 1;
1516     }
1517
1518     if (dbattr_conf) {
1519         char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1520         if (p) {
1521             retdb->attributes.unique_subject = parse_yesno(p, 1);
1522         }
1523     }
1524
1525  err:
1526     NCONF_free(dbattr_conf);
1527     TXT_DB_free(tmpdb);
1528     BIO_free_all(in);
1529     return retdb;
1530 }
1531
1532 int index_index(CA_DB *db)
1533 {
1534     if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1535                              LHASH_HASH_FN(index_serial),
1536                              LHASH_COMP_FN(index_serial))) {
1537         BIO_printf(bio_err,
1538                    "error creating serial number index:(%ld,%ld,%ld)\n",
1539                    db->db->error, db->db->arg1, db->db->arg2);
1540         return 0;
1541     }
1542
1543     if (db->attributes.unique_subject
1544         && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1545                                 LHASH_HASH_FN(index_name),
1546                                 LHASH_COMP_FN(index_name))) {
1547         BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1548                    db->db->error, db->db->arg1, db->db->arg2);
1549         return 0;
1550     }
1551     return 1;
1552 }
1553
1554 int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1555 {
1556     char buf[3][BSIZE];
1557     BIO *out;
1558     int j;
1559
1560     j = strlen(dbfile) + strlen(suffix);
1561     if (j + 6 >= BSIZE) {
1562         BIO_printf(bio_err, "file name too long\n");
1563         goto err;
1564     }
1565 #ifndef OPENSSL_SYS_VMS
1566     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr", dbfile);
1567     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.attr.%s", dbfile, suffix);
1568     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, suffix);
1569 #else
1570     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr", dbfile);
1571     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-attr-%s", dbfile, suffix);
1572     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, suffix);
1573 #endif
1574     out = BIO_new_file(buf[0], "w");
1575     if (out == NULL) {
1576         perror(dbfile);
1577         BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1578         goto err;
1579     }
1580     j = TXT_DB_write(out, db->db);
1581     BIO_free(out);
1582     if (j <= 0)
1583         goto err;
1584
1585     out = BIO_new_file(buf[1], "w");
1586     if (out == NULL) {
1587         perror(buf[2]);
1588         BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1589         goto err;
1590     }
1591     BIO_printf(out, "unique_subject = %s\n",
1592                db->attributes.unique_subject ? "yes" : "no");
1593     BIO_free(out);
1594
1595     return 1;
1596  err:
1597     return 0;
1598 }
1599
1600 int rotate_index(const char *dbfile, const char *new_suffix,
1601                  const char *old_suffix)
1602 {
1603     char buf[5][BSIZE];
1604     int i, j;
1605
1606     i = strlen(dbfile) + strlen(old_suffix);
1607     j = strlen(dbfile) + strlen(new_suffix);
1608     if (i > j)
1609         j = i;
1610     if (j + 6 >= BSIZE) {
1611         BIO_printf(bio_err, "file name too long\n");
1612         goto err;
1613     }
1614 #ifndef OPENSSL_SYS_VMS
1615     j = BIO_snprintf(buf[4], sizeof buf[4], "%s.attr", dbfile);
1616     j = BIO_snprintf(buf[3], sizeof buf[3], "%s.attr.%s", dbfile, old_suffix);
1617     j = BIO_snprintf(buf[2], sizeof buf[2], "%s.attr.%s", dbfile, new_suffix);
1618     j = BIO_snprintf(buf[1], sizeof buf[1], "%s.%s", dbfile, old_suffix);
1619     j = BIO_snprintf(buf[0], sizeof buf[0], "%s.%s", dbfile, new_suffix);
1620 #else
1621     j = BIO_snprintf(buf[4], sizeof buf[4], "%s-attr", dbfile);
1622     j = BIO_snprintf(buf[3], sizeof buf[3], "%s-attr-%s", dbfile, old_suffix);
1623     j = BIO_snprintf(buf[2], sizeof buf[2], "%s-attr-%s", dbfile, new_suffix);
1624     j = BIO_snprintf(buf[1], sizeof buf[1], "%s-%s", dbfile, old_suffix);
1625     j = BIO_snprintf(buf[0], sizeof buf[0], "%s-%s", dbfile, new_suffix);
1626 #endif
1627     if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1628 #ifdef ENOTDIR
1629         && errno != ENOTDIR
1630 #endif
1631         ) {
1632         BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1633         perror("reason");
1634         goto err;
1635     }
1636     if (rename(buf[0], dbfile) < 0) {
1637         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1638         perror("reason");
1639         rename(buf[1], dbfile);
1640         goto err;
1641     }
1642     if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1643 #ifdef ENOTDIR
1644         && errno != ENOTDIR
1645 #endif
1646         ) {
1647         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1648         perror("reason");
1649         rename(dbfile, buf[0]);
1650         rename(buf[1], dbfile);
1651         goto err;
1652     }
1653     if (rename(buf[2], buf[4]) < 0) {
1654         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1655         perror("reason");
1656         rename(buf[3], buf[4]);
1657         rename(dbfile, buf[0]);
1658         rename(buf[1], dbfile);
1659         goto err;
1660     }
1661     return 1;
1662  err:
1663     return 0;
1664 }
1665
1666 void free_index(CA_DB *db)
1667 {
1668     if (db) {
1669         TXT_DB_free(db->db);
1670         OPENSSL_free(db);
1671     }
1672 }
1673
1674 int parse_yesno(const char *str, int def)
1675 {
1676     if (str) {
1677         switch (*str) {
1678         case 'f':              /* false */
1679         case 'F':              /* FALSE */
1680         case 'n':              /* no */
1681         case 'N':              /* NO */
1682         case '0':              /* 0 */
1683             return 0;
1684         case 't':              /* true */
1685         case 'T':              /* TRUE */
1686         case 'y':              /* yes */
1687         case 'Y':              /* YES */
1688         case '1':              /* 1 */
1689             return 1;
1690         }
1691     }
1692     return def;
1693 }
1694
1695 /*
1696  * name is expected to be in the format /type0=value0/type1=value1/type2=...
1697  * where characters may be escaped by \
1698  */
1699 X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1700 {
1701     int nextismulti = 0;
1702     char *work;
1703     X509_NAME *n;
1704
1705     if (*cp++ != '/')
1706         return NULL;
1707
1708     n = X509_NAME_new();
1709     if (n == NULL)
1710         return NULL;
1711     work = OPENSSL_strdup(cp);
1712     if (work == NULL)
1713         goto err;
1714
1715     while (*cp) {
1716         char *bp = work;
1717         char *typestr = bp;
1718         unsigned char *valstr;
1719         int nid;
1720         int ismulti = nextismulti;
1721         nextismulti = 0;
1722
1723         /* Collect the type */
1724         while (*cp && *cp != '=')
1725             *bp++ = *cp++;
1726         if (*cp == '\0') {
1727             BIO_printf(bio_err,
1728                     "%s: Hit end of string before finding the equals.\n",
1729                     opt_getprog());
1730             goto err;
1731         }
1732         *bp++ = '\0';
1733         ++cp;
1734
1735         /* Collect the value. */
1736         valstr = (unsigned char *)bp;
1737         for (; *cp && *cp != '/'; *bp++ = *cp++) {
1738             if (canmulti && *cp == '+') {
1739                 nextismulti = 1;
1740                 break;
1741             }
1742             if (*cp == '\\' && *++cp == '\0') {
1743                 BIO_printf(bio_err,
1744                         "%s: escape character at end of string\n",
1745                         opt_getprog());
1746                 goto err;
1747             }
1748         }
1749         *bp++ = '\0';
1750
1751         /* If not at EOS (must be + or /), move forward. */
1752         if (*cp)
1753             ++cp;
1754
1755         /* Parse */
1756         nid = OBJ_txt2nid(typestr);
1757         if (nid == NID_undef) {
1758             BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1759                       opt_getprog(), typestr);
1760             continue;
1761         }
1762         if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1763                                         valstr, strlen((char *)valstr),
1764                                         -1, ismulti ? -1 : 0))
1765             goto err;
1766     }
1767
1768     OPENSSL_free(work);
1769     return n;
1770
1771  err:
1772     X509_NAME_free(n);
1773     OPENSSL_free(work);
1774     return NULL;
1775 }
1776
1777 /*
1778  * Read whole contents of a BIO into an allocated memory buffer and return
1779  * it.
1780  */
1781
1782 int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1783 {
1784     BIO *mem;
1785     int len, ret;
1786     unsigned char tbuf[1024];
1787
1788     mem = BIO_new(BIO_s_mem());
1789     if (mem == NULL)
1790         return -1;
1791     for (;;) {
1792         if ((maxlen != -1) && maxlen < 1024)
1793             len = maxlen;
1794         else
1795             len = 1024;
1796         len = BIO_read(in, tbuf, len);
1797         if (len < 0) {
1798             BIO_free(mem);
1799             return -1;
1800         }
1801         if (len == 0)
1802             break;
1803         if (BIO_write(mem, tbuf, len) != len) {
1804             BIO_free(mem);
1805             return -1;
1806         }
1807         maxlen -= len;
1808
1809         if (maxlen == 0)
1810             break;
1811     }
1812     ret = BIO_get_mem_data(mem, (char **)out);
1813     BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1814     BIO_free(mem);
1815     return ret;
1816 }
1817
1818 int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1819 {
1820     int rv;
1821     char *stmp, *vtmp = NULL;
1822     stmp = OPENSSL_strdup(value);
1823     if (!stmp)
1824         return -1;
1825     vtmp = strchr(stmp, ':');
1826     if (vtmp) {
1827         *vtmp = 0;
1828         vtmp++;
1829     }
1830     rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1831     OPENSSL_free(stmp);
1832     return rv;
1833 }
1834
1835 static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1836 {
1837     X509_POLICY_NODE *node;
1838     int i;
1839
1840     BIO_printf(bio_err, "%s Policies:", name);
1841     if (nodes) {
1842         BIO_puts(bio_err, "\n");
1843         for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1844             node = sk_X509_POLICY_NODE_value(nodes, i);
1845             X509_POLICY_NODE_print(bio_err, node, 2);
1846         }
1847     } else
1848         BIO_puts(bio_err, " <empty>\n");
1849 }
1850
1851 void policies_print(X509_STORE_CTX *ctx)
1852 {
1853     X509_POLICY_TREE *tree;
1854     int explicit_policy;
1855     tree = X509_STORE_CTX_get0_policy_tree(ctx);
1856     explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1857
1858     BIO_printf(bio_err, "Require explicit Policy: %s\n",
1859                explicit_policy ? "True" : "False");
1860
1861     nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1862     nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1863 }
1864
1865 /*-
1866  * next_protos_parse parses a comma separated list of strings into a string
1867  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1868  *   outlen: (output) set to the length of the resulting buffer on success.
1869  *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1870  *   in: a NUL terminated string like "abc,def,ghi"
1871  *
1872  *   returns: a malloc'd buffer or NULL on failure.
1873  */
1874 unsigned char *next_protos_parse(size_t *outlen, const char *in)
1875 {
1876     size_t len;
1877     unsigned char *out;
1878     size_t i, start = 0;
1879
1880     len = strlen(in);
1881     if (len >= 65535)
1882         return NULL;
1883
1884     out = app_malloc(strlen(in) + 1, "NPN buffer");
1885     for (i = 0; i <= len; ++i) {
1886         if (i == len || in[i] == ',') {
1887             if (i - start > 255) {
1888                 OPENSSL_free(out);
1889                 return NULL;
1890             }
1891             out[start] = i - start;
1892             start = i + 1;
1893         } else
1894             out[i + 1] = in[i];
1895     }
1896
1897     *outlen = len + 1;
1898     return out;
1899 }
1900
1901 void print_cert_checks(BIO *bio, X509 *x,
1902                        const char *checkhost,
1903                        const char *checkemail, const char *checkip)
1904 {
1905     if (x == NULL)
1906         return;
1907     if (checkhost) {
1908         BIO_printf(bio, "Hostname %s does%s match certificate\n",
1909                    checkhost,
1910                    X509_check_host(x, checkhost, 0, 0, NULL) == 1
1911                        ? "" : " NOT");
1912     }
1913
1914     if (checkemail) {
1915         BIO_printf(bio, "Email %s does%s match certificate\n",
1916                    checkemail, X509_check_email(x, checkemail, 0, 0)
1917                    ? "" : " NOT");
1918     }
1919
1920     if (checkip) {
1921         BIO_printf(bio, "IP %s does%s match certificate\n",
1922                    checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
1923     }
1924 }
1925
1926 /* Get first http URL from a DIST_POINT structure */
1927
1928 static const char *get_dp_url(DIST_POINT *dp)
1929 {
1930     GENERAL_NAMES *gens;
1931     GENERAL_NAME *gen;
1932     int i, gtype;
1933     ASN1_STRING *uri;
1934     if (!dp->distpoint || dp->distpoint->type != 0)
1935         return NULL;
1936     gens = dp->distpoint->name.fullname;
1937     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
1938         gen = sk_GENERAL_NAME_value(gens, i);
1939         uri = GENERAL_NAME_get0_value(gen, &gtype);
1940         if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
1941             const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
1942             if (strncmp(uptr, "http://", 7) == 0)
1943                 return uptr;
1944         }
1945     }
1946     return NULL;
1947 }
1948
1949 /*
1950  * Look through a CRLDP structure and attempt to find an http URL to
1951  * downloads a CRL from.
1952  */
1953
1954 static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
1955 {
1956     int i;
1957     const char *urlptr = NULL;
1958     for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
1959         DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
1960         urlptr = get_dp_url(dp);
1961         if (urlptr)
1962             return load_crl(urlptr, FORMAT_HTTP);
1963     }
1964     return NULL;
1965 }
1966
1967 /*
1968  * Example of downloading CRLs from CRLDP: not usable for real world as it
1969  * always downloads, doesn't support non-blocking I/O and doesn't cache
1970  * anything.
1971  */
1972
1973 static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
1974 {
1975     X509 *x;
1976     STACK_OF(X509_CRL) *crls = NULL;
1977     X509_CRL *crl;
1978     STACK_OF(DIST_POINT) *crldp;
1979
1980     crls = sk_X509_CRL_new_null();
1981     if (!crls)
1982         return NULL;
1983     x = X509_STORE_CTX_get_current_cert(ctx);
1984     crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
1985     crl = load_crl_crldp(crldp);
1986     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
1987     if (!crl) {
1988         sk_X509_CRL_free(crls);
1989         return NULL;
1990     }
1991     sk_X509_CRL_push(crls, crl);
1992     /* Try to download delta CRL */
1993     crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
1994     crl = load_crl_crldp(crldp);
1995     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
1996     if (crl)
1997         sk_X509_CRL_push(crls, crl);
1998     return crls;
1999 }
2000
2001 void store_setup_crl_download(X509_STORE *st)
2002 {
2003     X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2004 }
2005
2006 /*
2007  * Platform-specific sections
2008  */
2009 #if defined(_WIN32)
2010 # ifdef fileno
2011 #  undef fileno
2012 #  define fileno(a) (int)_fileno(a)
2013 # endif
2014
2015 # include <windows.h>
2016 # include <tchar.h>
2017
2018 static int WIN32_rename(const char *from, const char *to)
2019 {
2020     TCHAR *tfrom = NULL, *tto;
2021     DWORD err;
2022     int ret = 0;
2023
2024     if (sizeof(TCHAR) == 1) {
2025         tfrom = (TCHAR *)from;
2026         tto = (TCHAR *)to;
2027     } else {                    /* UNICODE path */
2028
2029         size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2030         tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2031         if (tfrom == NULL)
2032             goto err;
2033         tto = tfrom + flen;
2034 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2035         if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2036 # endif
2037             for (i = 0; i < flen; i++)
2038                 tfrom[i] = (TCHAR)from[i];
2039 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2040         if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2041 # endif
2042             for (i = 0; i < tlen; i++)
2043                 tto[i] = (TCHAR)to[i];
2044     }
2045
2046     if (MoveFile(tfrom, tto))
2047         goto ok;
2048     err = GetLastError();
2049     if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2050         if (DeleteFile(tto) && MoveFile(tfrom, tto))
2051             goto ok;
2052         err = GetLastError();
2053     }
2054     if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2055         errno = ENOENT;
2056     else if (err == ERROR_ACCESS_DENIED)
2057         errno = EACCES;
2058     else
2059         errno = EINVAL;         /* we could map more codes... */
2060  err:
2061     ret = -1;
2062  ok:
2063     if (tfrom != NULL && tfrom != (TCHAR *)from)
2064         free(tfrom);
2065     return ret;
2066 }
2067 #endif
2068
2069 /* app_tminterval section */
2070 #if defined(_WIN32)
2071 double app_tminterval(int stop, int usertime)
2072 {
2073     FILETIME now;
2074     double ret = 0;
2075     static ULARGE_INTEGER tmstart;
2076     static int warning = 1;
2077 # ifdef _WIN32_WINNT
2078     static HANDLE proc = NULL;
2079
2080     if (proc == NULL) {
2081         if (check_winnt())
2082             proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2083                                GetCurrentProcessId());
2084         if (proc == NULL)
2085             proc = (HANDLE) - 1;
2086     }
2087
2088     if (usertime && proc != (HANDLE) - 1) {
2089         FILETIME junk;
2090         GetProcessTimes(proc, &junk, &junk, &junk, &now);
2091     } else
2092 # endif
2093     {
2094         SYSTEMTIME systime;
2095
2096         if (usertime && warning) {
2097             BIO_printf(bio_err, "To get meaningful results, run "
2098                        "this program on idle system.\n");
2099             warning = 0;
2100         }
2101         GetSystemTime(&systime);
2102         SystemTimeToFileTime(&systime, &now);
2103     }
2104
2105     if (stop == TM_START) {
2106         tmstart.u.LowPart = now.dwLowDateTime;
2107         tmstart.u.HighPart = now.dwHighDateTime;
2108     } else {
2109         ULARGE_INTEGER tmstop;
2110
2111         tmstop.u.LowPart = now.dwLowDateTime;
2112         tmstop.u.HighPart = now.dwHighDateTime;
2113
2114         ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2115     }
2116
2117     return (ret);
2118 }
2119 #elif defined(OPENSSL_SYSTEM_VXWORKS)
2120 # include <time.h>
2121
2122 double app_tminterval(int stop, int usertime)
2123 {
2124     double ret = 0;
2125 # ifdef CLOCK_REALTIME
2126     static struct timespec tmstart;
2127     struct timespec now;
2128 # else
2129     static unsigned long tmstart;
2130     unsigned long now;
2131 # endif
2132     static int warning = 1;
2133
2134     if (usertime && warning) {
2135         BIO_printf(bio_err, "To get meaningful results, run "
2136                    "this program on idle system.\n");
2137         warning = 0;
2138     }
2139 # ifdef CLOCK_REALTIME
2140     clock_gettime(CLOCK_REALTIME, &now);
2141     if (stop == TM_START)
2142         tmstart = now;
2143     else
2144         ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2145                - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2146 # else
2147     now = tickGet();
2148     if (stop == TM_START)
2149         tmstart = now;
2150     else
2151         ret = (now - tmstart) / (double)sysClkRateGet();
2152 # endif
2153     return (ret);
2154 }
2155
2156 #elif defined(OPENSSL_SYSTEM_VMS)
2157 # include <time.h>
2158 # include <times.h>
2159
2160 double app_tminterval(int stop, int usertime)
2161 {
2162     static clock_t tmstart;
2163     double ret = 0;
2164     clock_t now;
2165 # ifdef __TMS
2166     struct tms rus;
2167
2168     now = times(&rus);
2169     if (usertime)
2170         now = rus.tms_utime;
2171 # else
2172     if (usertime)
2173         now = clock();          /* sum of user and kernel times */
2174     else {
2175         struct timeval tv;
2176         gettimeofday(&tv, NULL);
2177         now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2178                         (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2179             );
2180     }
2181 # endif
2182     if (stop == TM_START)
2183         tmstart = now;
2184     else
2185         ret = (now - tmstart) / (double)(CLK_TCK);
2186
2187     return (ret);
2188 }
2189
2190 #elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2191 # include <sys/times.h>
2192
2193 double app_tminterval(int stop, int usertime)
2194 {
2195     double ret = 0;
2196     struct tms rus;
2197     clock_t now = times(&rus);
2198     static clock_t tmstart;
2199
2200     if (usertime)
2201         now = rus.tms_utime;
2202
2203     if (stop == TM_START)
2204         tmstart = now;
2205     else {
2206         long int tck = sysconf(_SC_CLK_TCK);
2207         ret = (now - tmstart) / (double)tck;
2208     }
2209
2210     return (ret);
2211 }
2212
2213 #else
2214 # include <sys/time.h>
2215 # include <sys/resource.h>
2216
2217 double app_tminterval(int stop, int usertime)
2218 {
2219     double ret = 0;
2220     struct rusage rus;
2221     struct timeval now;
2222     static struct timeval tmstart;
2223
2224     if (usertime)
2225         getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2226     else
2227         gettimeofday(&now, NULL);
2228
2229     if (stop == TM_START)
2230         tmstart = now;
2231     else
2232         ret = ((now.tv_sec + now.tv_usec * 1e-6)
2233                - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2234
2235     return ret;
2236 }
2237 #endif
2238
2239 int app_access(const char* name, int flag)
2240 {
2241 #ifdef _WIN32
2242     return _access(name, flag);
2243 #else
2244     return access(name, flag);
2245 #endif
2246 }
2247
2248 /* app_isdir section */
2249 #ifdef _WIN32
2250 int app_isdir(const char *name)
2251 {
2252     HANDLE hList;
2253     WIN32_FIND_DATA FileData;
2254 # if defined(UNICODE) || defined(_UNICODE)
2255     size_t i, len_0 = strlen(name) + 1;
2256
2257     if (len_0 > OSSL_NELEM(FileData.cFileName))
2258         return -1;
2259
2260 #  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2261     if (!MultiByteToWideChar
2262         (CP_ACP, 0, name, len_0, FileData.cFileName, len_0))
2263 #  endif
2264         for (i = 0; i < len_0; i++)
2265             FileData.cFileName[i] = (WCHAR)name[i];
2266
2267     hList = FindFirstFile(FileData.cFileName, &FileData);
2268 # else
2269     hList = FindFirstFile(name, &FileData);
2270 # endif
2271     if (hList == INVALID_HANDLE_VALUE)
2272         return -1;
2273     FindClose(hList);
2274     return ((FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
2275 }
2276 #else
2277 # include <sys/stat.h>
2278 # ifndef S_ISDIR
2279 #  if defined(_S_IFMT) && defined(_S_IFDIR)
2280 #   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2281 #  else
2282 #   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2283 #  endif
2284 # endif
2285
2286 int app_isdir(const char *name)
2287 {
2288 # if defined(S_ISDIR)
2289     struct stat st;
2290
2291     if (stat(name, &st) == 0)
2292         return S_ISDIR(st.st_mode);
2293     else
2294         return -1;
2295 # else
2296     return -1;
2297 # endif
2298 }
2299 #endif
2300
2301 /* raw_read|write section */
2302 #if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2303 int raw_read_stdin(void *buf, int siz)
2304 {
2305     DWORD n;
2306     if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2307         return (n);
2308     else
2309         return (-1);
2310 }
2311 #else
2312 int raw_read_stdin(void *buf, int siz)
2313 {
2314     return read(fileno(stdin), buf, siz);
2315 }
2316 #endif
2317
2318 #if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2319 int raw_write_stdout(const void *buf, int siz)
2320 {
2321     DWORD n;
2322     if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2323         return (n);
2324     else
2325         return (-1);
2326 }
2327 #else
2328 int raw_write_stdout(const void *buf, int siz)
2329 {
2330     return write(fileno(stdout), buf, siz);
2331 }
2332 #endif
2333
2334 /*
2335  * Centralized handling if input and output files with format specification
2336  * The format is meant to show what the input and output is supposed to be,
2337  * and is therefore a show of intent more than anything else.  However, it
2338  * does impact behavior on some platform, such as differentiating between
2339  * text and binary input/output on non-Unix platforms
2340  */
2341 static int istext(int format)
2342 {
2343     return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2344 }
2345
2346 BIO *dup_bio_in(int format)
2347 {
2348     return BIO_new_fp(stdin,
2349                       BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2350 }
2351
2352 BIO *dup_bio_out(int format)
2353 {
2354     BIO *b = BIO_new_fp(stdout,
2355                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2356 #ifdef OPENSSL_SYS_VMS
2357     if (istext(format))
2358         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2359 #endif
2360     return b;
2361 }
2362
2363 BIO *dup_bio_err(int format)
2364 {
2365     BIO *b = BIO_new_fp(stderr,
2366                         BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2367 #ifdef OPENSSL_SYS_VMS
2368     if (istext(format))
2369         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2370 #endif
2371     return b;
2372 }
2373
2374 void unbuffer(FILE *fp)
2375 {
2376 /*
2377  * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2378  * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2379  * However, we trust that the C RTL will never give us a FILE pointer
2380  * above the first 4 GB of memory, so we simply turn off the warning
2381  * temporarily.
2382  */
2383 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2384 # pragma environment save
2385 # pragma message disable maylosedata2
2386 #endif
2387     setbuf(fp, NULL);
2388 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2389 # pragma environment restore
2390 #endif
2391 }
2392
2393 static const char *modestr(char mode, int format)
2394 {
2395     OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2396
2397     switch (mode) {
2398     case 'a':
2399         return istext(format) ? "a" : "ab";
2400     case 'r':
2401         return istext(format) ? "r" : "rb";
2402     case 'w':
2403         return istext(format) ? "w" : "wb";
2404     }
2405     /* The assert above should make sure we never reach this point */
2406     return NULL;
2407 }
2408
2409 static const char *modeverb(char mode)
2410 {
2411     switch (mode) {
2412     case 'a':
2413         return "appending";
2414     case 'r':
2415         return "reading";
2416     case 'w':
2417         return "writing";
2418     }
2419     return "(doing something)";
2420 }
2421
2422 /*
2423  * Open a file for writing, owner-read-only.
2424  */
2425 BIO *bio_open_owner(const char *filename, int format, int private)
2426 {
2427     FILE *fp = NULL;
2428     BIO *b = NULL;
2429     int fd = -1, bflags, mode, textmode;
2430
2431     if (!private || filename == NULL || strcmp(filename, "-") == 0)
2432         return bio_open_default(filename, 'w', format);
2433
2434     mode = O_WRONLY;
2435 #ifdef O_CREAT
2436     mode |= O_CREAT;
2437 #endif
2438 #ifdef O_TRUNC
2439     mode |= O_TRUNC;
2440 #endif
2441     textmode = istext(format);
2442     if (!textmode) {
2443 #ifdef O_BINARY
2444         mode |= O_BINARY;
2445 #elif defined(_O_BINARY)
2446         mode |= _O_BINARY;
2447 #endif
2448     }
2449
2450 #ifdef OPENSSL_SYS_VMS
2451     /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2452      * it still needs to know that we're going binary, or fdopen()
2453      * will fail with "invalid argument"...  so we tell VMS what the
2454      * context is.
2455      */
2456     if (!textmode)
2457         fd = open(filename, mode, 0600, "ctx=bin");
2458     else
2459 #endif
2460         fd = open(filename, mode, 0600);
2461     if (fd < 0)
2462         goto err;
2463     fp = fdopen(fd, modestr('w', format));
2464     if (fp == NULL)
2465         goto err;
2466     bflags = BIO_CLOSE;
2467     if (textmode)
2468         bflags |= BIO_FP_TEXT;
2469     b = BIO_new_fp(fp, bflags);
2470     if (b)
2471         return b;
2472
2473  err:
2474     BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2475                opt_getprog(), filename, strerror(errno));
2476     ERR_print_errors(bio_err);
2477     /* If we have fp, then fdopen took over fd, so don't close both. */
2478     if (fp)
2479         fclose(fp);
2480     else if (fd >= 0)
2481         close(fd);
2482     return NULL;
2483 }
2484
2485 static BIO *bio_open_default_(const char *filename, char mode, int format,
2486                               int quiet)
2487 {
2488     BIO *ret;
2489
2490     if (filename == NULL || strcmp(filename, "-") == 0) {
2491         ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2492         if (quiet) {
2493             ERR_clear_error();
2494             return ret;
2495         }
2496         if (ret != NULL)
2497             return ret;
2498         BIO_printf(bio_err,
2499                    "Can't open %s, %s\n",
2500                    mode == 'r' ? "stdin" : "stdout", strerror(errno));
2501     } else {
2502         ret = BIO_new_file(filename, modestr(mode, format));
2503         if (quiet) {
2504             ERR_clear_error();
2505             return ret;
2506         }
2507         if (ret != NULL)
2508             return ret;
2509         BIO_printf(bio_err,
2510                    "Can't open %s for %s, %s\n",
2511                    filename, modeverb(mode), strerror(errno));
2512     }
2513     ERR_print_errors(bio_err);
2514     return NULL;
2515 }
2516
2517 BIO *bio_open_default(const char *filename, char mode, int format)
2518 {
2519     return bio_open_default_(filename, mode, format, 0);
2520 }
2521
2522 BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2523 {
2524     return bio_open_default_(filename, mode, format, 1);
2525 }
2526
2527 void wait_for_async(SSL *s)
2528 {
2529     /* On Windows select only works for sockets, so we simply don't wait  */
2530 #ifndef OPENSSL_SYS_WINDOWS
2531     int width = 0;
2532     fd_set asyncfds;
2533     OSSL_ASYNC_FD *fds;
2534     size_t numfds;
2535
2536     if (!SSL_get_all_async_fds(s, NULL, &numfds))
2537         return;
2538     if (numfds == 0)
2539         return;
2540     fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2541     if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2542         OPENSSL_free(fds);
2543     }
2544
2545     FD_ZERO(&asyncfds);
2546     while (numfds > 0) {
2547         if (width <= (int)*fds)
2548             width = (int)*fds + 1;
2549         openssl_fdset((int)*fds, &asyncfds);
2550         numfds--;
2551         fds++;
2552     }
2553     select(width, (void *)&asyncfds, NULL, NULL, NULL);
2554 #endif
2555 }
2556
2557 /* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2558 #if defined(OPENSSL_SYS_MSDOS)
2559 int has_stdin_waiting(void)
2560 {
2561 # if defined(OPENSSL_SYS_WINDOWS)
2562     HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2563     DWORD events = 0;
2564     INPUT_RECORD inputrec;
2565     DWORD insize = 1;
2566     BOOL peeked;
2567
2568     if (inhand == INVALID_HANDLE_VALUE) {
2569         return 0;
2570     }
2571
2572     peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2573     if (!peeked) {
2574         /* Probably redirected input? _kbhit() does not work in this case */
2575         if (!feof(stdin)) {
2576             return 1;
2577         }
2578         return 0;
2579     }
2580 # endif
2581     return _kbhit();
2582 }
2583 #endif
2584
2585 /* Corrupt a signature by modifying final byte */
2586 int corrupt_signature(ASN1_STRING *signature)
2587 {
2588         unsigned char *s;
2589         size_t slen = ASN1_STRING_length(signature);
2590
2591         s = OPENSSL_memdup(ASN1_STRING_get0_data(signature), slen);
2592         if (s == NULL)
2593             return 0;
2594         s[slen - 1] ^= 0x1;
2595         ASN1_STRING_set0(signature, s, slen);
2596         return 1;
2597 }