apps/lib/apps.c

   1 /*
   2  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
  11 /*
  12  * On VMS, you need to define this to get the declaration of fileno().  The
  13  * value 2 is to make sure no function defined in POSIX-2 is left undefined.
  14  */
  15 # define _POSIX_C_SOURCE 2
  16 #endif
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <sys/types.h>
  22 #ifndef OPENSSL_NO_POSIX_IO
  23 # include <sys/stat.h>
  24 # include <fcntl.h>
  25 #endif
  26 #include <ctype.h>
  27 #include <errno.h>
  28 #include <openssl/err.h>
  29 #include <openssl/x509.h>
  30 #include <openssl/x509v3.h>
  31 #include <openssl/pem.h>
  32 #include <openssl/pkcs12.h>
  33 #include <openssl/ui.h>
  34 #include <openssl/safestack.h>
  35 #ifndef OPENSSL_NO_ENGINE
  36 # include <openssl/engine.h>
  37 #endif
  38 #ifndef OPENSSL_NO_RSA
  39 # include <openssl/rsa.h>
  40 #endif
  41 #include <openssl/bn.h>
  42 #include <openssl/ssl.h>
  43 #include "apps.h"
  44
  45 #ifdef _WIN32
  46 static int WIN32_rename(const char *from, const char *to);
  47 # define rename(from,to) WIN32_rename((from),(to))
  48 #endif
  49
  50 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
  51 # include <conio.h>
  52 #endif
  53
  54 #if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
  55 # define _kbhit kbhit
  56 #endif
  57
  58 #define PASS_SOURCE_SIZE_MAX 4
  59
  60 typedef struct {
  61     const char *name;
  62     unsigned long flag;
  63     unsigned long mask;
  64 } NAME_EX_TBL;
  65
  66 static int set_table_opts(unsigned long *flags, const char *arg,
  67                           const NAME_EX_TBL * in_tbl);
  68 static int set_multi_opts(unsigned long *flags, const char *arg,
  69                           const NAME_EX_TBL * in_tbl);
  70
  71 int app_init(long mesgwin);
  72
  73 int chopup_args(ARGS *arg, char *buf)
  74 {
  75     int quoted;
  76     char c = '\0', *p = NULL;
  77
  78     arg->argc = 0;
  79     if (arg->size == 0) {
  80         arg->size = 20;
  81         arg->argv = app_malloc(sizeof(*arg->argv) * arg->size, "argv space");
  82     }
  83
  84     for (p = buf;;) {
  85         /* Skip whitespace. */
  86         while (*p && isspace(_UC(*p)))
  87             p++;
  88         if (*p == '\0')
  89             break;
  90
  91         /* The start of something good :-) */
  92         if (arg->argc >= arg->size) {
  93             char **tmp;
  94             arg->size += 20;
  95             tmp = OPENSSL_realloc(arg->argv, sizeof(*arg->argv) * arg->size);
  96             if (tmp == NULL)
  97                 return 0;
  98             arg->argv = tmp;
  99         }
 100         quoted = *p == '\'' || *p == '"';
 101         if (quoted)
 102             c = *p++;
 103         arg->argv[arg->argc++] = p;
 104
 105         /* now look for the end of this */
 106         if (quoted) {
 107             while (*p && *p != c)
 108                 p++;
 109             *p++ = '\0';
 110         } else {
 111             while (*p && !isspace(_UC(*p)))
 112                 p++;
 113             if (*p)
 114                 *p++ = '\0';
 115         }
 116     }
 117     arg->argv[arg->argc] = NULL;
 118     return 1;
 119 }
 120
 121 #ifndef APP_INIT
 122 int app_init(long mesgwin)
 123 {
 124     return 1;
 125 }
 126 #endif
 127
 128 int ctx_set_verify_locations(SSL_CTX *ctx,
 129                              const char *CAfile, int noCAfile,
 130                              const char *CApath, int noCApath,
 131                              const char *CAstore, int noCAstore)
 132 {
 133     if (CAfile == NULL && CApath == NULL && CAstore == NULL) {
 134         if (!noCAfile && SSL_CTX_set_default_verify_file(ctx) <= 0)
 135             return 0;
 136         if (!noCApath && SSL_CTX_set_default_verify_dir(ctx) <= 0)
 137             return 0;
 138         if (!noCAstore && SSL_CTX_set_default_verify_store(ctx) <= 0)
 139             return 0;
 140
 141         return 1;
 142     }
 143
 144     if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
 145         return 0;
 146     if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
 147         return 0;
 148     if (CAstore != NULL && !SSL_CTX_load_verify_store(ctx, CAstore))
 149         return 0;
 150     return 1;
 151 }
 152
 153 #ifndef OPENSSL_NO_CT
 154
 155 int ctx_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
 156 {
 157     if (path == NULL)
 158         return SSL_CTX_set_default_ctlog_list_file(ctx);
 159
 160     return SSL_CTX_set_ctlog_list_file(ctx, path);
 161 }
 162
 163 #endif
 164
 165 static unsigned long nmflag = 0;
 166 static char nmflag_set = 0;
 167
 168 int set_nameopt(const char *arg)
 169 {
 170     int ret = set_name_ex(&nmflag, arg);
 171
 172     if (ret)
 173         nmflag_set = 1;
 174
 175     return ret;
 176 }
 177
 178 unsigned long get_nameopt(void)
 179 {
 180     return (nmflag_set) ? nmflag : XN_FLAG_ONELINE;
 181 }
 182
 183 int dump_cert_text(BIO *out, X509 *x)
 184 {
 185     print_name(out, "subject=", X509_get_subject_name(x), get_nameopt());
 186     BIO_puts(out, "\n");
 187     print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 188     BIO_puts(out, "\n");
 189
 190     return 0;
 191 }
 192
 193 int wrap_password_callback(char *buf, int bufsiz, int verify, void *userdata)
 194 {
 195     return password_callback(buf, bufsiz, verify, (PW_CB_DATA *)userdata);
 196 }
 197
 198
 199 static char *app_get_pass(const char *arg, int keepbio);
 200
 201 int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
 202 {
 203     int same = arg1 != NULL && arg2 != NULL && strcmp(arg1, arg2) == 0;
 204
 205     if (arg1 != NULL) {
 206         *pass1 = app_get_pass(arg1, same);
 207         if (*pass1 == NULL)
 208             return 0;
 209     } else if (pass1 != NULL) {
 210         *pass1 = NULL;
 211     }
 212     if (arg2 != NULL) {
 213         *pass2 = app_get_pass(arg2, same ? 2 : 0);
 214         if (*pass2 == NULL)
 215             return 0;
 216     } else if (pass2 != NULL) {
 217         *pass2 = NULL;
 218     }
 219     return 1;
 220 }
 221
 222 static char *app_get_pass(const char *arg, int keepbio)
 223 {
 224     static BIO *pwdbio = NULL;
 225     char *tmp, tpass[APP_PASS_LEN];
 226     int i;
 227
 228     /* PASS_SOURCE_SIZE_MAX = max number of chars before ':' in below strings */
 229     if (strncmp(arg, "pass:", 5) == 0)
 230         return OPENSSL_strdup(arg + 5);
 231     if (strncmp(arg, "env:", 4) == 0) {
 232         tmp = getenv(arg + 4);
 233         if (tmp == NULL) {
 234             BIO_printf(bio_err, "No environment variable %s\n", arg + 4);
 235             return NULL;
 236         }
 237         return OPENSSL_strdup(tmp);
 238     }
 239     if (!keepbio || pwdbio == NULL) {
 240         if (strncmp(arg, "file:", 5) == 0) {
 241             pwdbio = BIO_new_file(arg + 5, "r");
 242             if (pwdbio == NULL) {
 243                 BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
 244                 return NULL;
 245             }
 246 #if !defined(_WIN32)
 247             /*
 248              * Under _WIN32, which covers even Win64 and CE, file
 249              * descriptors referenced by BIO_s_fd are not inherited
 250              * by child process and therefore below is not an option.
 251              * It could have been an option if bss_fd.c was operating
 252              * on real Windows descriptors, such as those obtained
 253              * with CreateFile.
 254              */
 255         } else if (strncmp(arg, "fd:", 3) == 0) {
 256             BIO *btmp;
 257             i = atoi(arg + 3);
 258             if (i >= 0)
 259                 pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 260             if ((i < 0) || !pwdbio) {
 261                 BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
 262                 return NULL;
 263             }
 264             /*
 265              * Can't do BIO_gets on an fd BIO so add a buffering BIO
 266              */
 267             btmp = BIO_new(BIO_f_buffer());
 268             pwdbio = BIO_push(btmp, pwdbio);
 269 #endif
 270         } else if (strcmp(arg, "stdin") == 0) {
 271             pwdbio = dup_bio_in(FORMAT_TEXT);
 272             if (pwdbio == NULL) {
 273                 BIO_printf(bio_err, "Can't open BIO for stdin\n");
 274                 return NULL;
 275             }
 276         } else {
 277             /* argument syntax error; do not reveal too much about arg */
 278             tmp = strchr(arg, ':');
 279             if (tmp == NULL || tmp - arg > PASS_SOURCE_SIZE_MAX)
 280                 BIO_printf(bio_err,
 281                            "Invalid password argument, missing ':' within the first %d chars\n",
 282                            PASS_SOURCE_SIZE_MAX + 1);
 283             else
 284                 BIO_printf(bio_err,
 285                            "Invalid password argument, starting with \"%.*s\"\n",
 286                            (int)(tmp - arg + 1), arg);
 287             return NULL;
 288         }
 289     }
 290     i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 291     if (keepbio != 1) {
 292         BIO_free_all(pwdbio);
 293         pwdbio = NULL;
 294     }
 295     if (i <= 0) {
 296         BIO_printf(bio_err, "Error reading password from BIO\n");
 297         return NULL;
 298     }
 299     tmp = strchr(tpass, '\n');
 300     if (tmp != NULL)
 301         *tmp = 0;
 302     return OPENSSL_strdup(tpass);
 303 }
 304
 305 CONF *app_load_config_bio(BIO *in, const char *filename)
 306 {
 307     long errorline = -1;
 308     CONF *conf;
 309     int i;
 310
 311     conf = NCONF_new(NULL);
 312     i = NCONF_load_bio(conf, in, &errorline);
 313     if (i > 0)
 314         return conf;
 315
 316     if (errorline <= 0) {
 317         BIO_printf(bio_err, "%s: Can't load ", opt_getprog());
 318     } else {
 319         BIO_printf(bio_err, "%s: Error on line %ld of ", opt_getprog(),
 320                    errorline);
 321     }
 322     if (filename != NULL)
 323         BIO_printf(bio_err, "config file \"%s\"\n", filename);
 324     else
 325         BIO_printf(bio_err, "config input");
 326
 327     NCONF_free(conf);
 328     return NULL;
 329 }
 330
 331 CONF *app_load_config(const char *filename)
 332 {
 333     BIO *in;
 334     CONF *conf;
 335
 336     in = bio_open_default(filename, 'r', FORMAT_TEXT);
 337     if (in == NULL)
 338         return NULL;
 339
 340     conf = app_load_config_bio(in, filename);
 341     BIO_free(in);
 342     return conf;
 343 }
 344
 345 CONF *app_load_config_quiet(const char *filename)
 346 {
 347     BIO *in;
 348     CONF *conf;
 349
 350     in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
 351     if (in == NULL)
 352         return NULL;
 353
 354     conf = app_load_config_bio(in, filename);
 355     BIO_free(in);
 356     return conf;
 357 }
 358
 359 int app_load_modules(const CONF *config)
 360 {
 361     CONF *to_free = NULL;
 362
 363     if (config == NULL)
 364         config = to_free = app_load_config_quiet(default_config_file);
 365     if (config == NULL)
 366         return 1;
 367
 368     if (CONF_modules_load(config, NULL, 0) <= 0) {
 369         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
 370         ERR_print_errors(bio_err);
 371         NCONF_free(to_free);
 372         return 0;
 373     }
 374     NCONF_free(to_free);
 375     return 1;
 376 }
 377
 378 int add_oid_section(CONF *conf)
 379 {
 380     char *p;
 381     STACK_OF(CONF_VALUE) *sktmp;
 382     CONF_VALUE *cnf;
 383     int i;
 384
 385     if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
 386         ERR_clear_error();
 387         return 1;
 388     }
 389     if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
 390         BIO_printf(bio_err, "problem loading oid section %s\n", p);
 391         return 0;
 392     }
 393     for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 394         cnf = sk_CONF_VALUE_value(sktmp, i);
 395         if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 396             BIO_printf(bio_err, "problem creating object %s=%s\n",
 397                        cnf->name, cnf->value);
 398             return 0;
 399         }
 400     }
 401     return 1;
 402 }
 403
 404 static int load_pkcs12(BIO *in, const char *desc,
 405                        pem_password_cb *pem_cb, PW_CB_DATA *cb_data,
 406                        EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 407 {
 408     const char *pass;
 409     char tpass[PEM_BUFSIZE];
 410     int len, ret = 0;
 411     PKCS12 *p12;
 412     p12 = d2i_PKCS12_bio(in, NULL);
 413     if (p12 == NULL) {
 414         BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
 415         goto die;
 416     }
 417     /* See if an empty password will do */
 418     if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0)) {
 419         pass = "";
 420     } else {
 421         if (pem_cb == NULL)
 422             pem_cb = (pem_password_cb *)password_callback;
 423         len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
 424         if (len < 0) {
 425             BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
 426             goto die;
 427         }
 428         if (len < PEM_BUFSIZE)
 429             tpass[len] = 0;
 430         if (!PKCS12_verify_mac(p12, tpass, len)) {
 431             BIO_printf(bio_err,
 432                        "Mac verify error (wrong password?) in PKCS12 file for %s\n",
 433                        desc);
 434             goto die;
 435         }
 436         pass = tpass;
 437     }
 438     ret = PKCS12_parse(p12, pass, pkey, cert, ca);
 439  die:
 440     PKCS12_free(p12);
 441     return ret;
 442 }
 443
 444 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 445 static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
 446 {
 447     char *host = NULL, *port = NULL, *path = NULL;
 448     BIO *bio = NULL;
 449     OCSP_REQ_CTX *rctx = NULL;
 450     int use_ssl, rv = 0;
 451     if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
 452         goto err;
 453     if (use_ssl) {
 454         BIO_puts(bio_err, "https not supported\n");
 455         goto err;
 456     }
 457     bio = BIO_new_connect(host);
 458     if (!bio || !BIO_set_conn_port(bio, port))
 459         goto err;
 460     rctx = OCSP_REQ_CTX_new(bio, 1024);
 461     if (rctx == NULL)
 462         goto err;
 463     if (!OCSP_REQ_CTX_http(rctx, "GET", path))
 464         goto err;
 465     if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
 466         goto err;
 467     if (pcert) {
 468         do {
 469             rv = X509_http_nbio(rctx, pcert);
 470         } while (rv == -1);
 471     } else {
 472         do {
 473             rv = X509_CRL_http_nbio(rctx, pcrl);
 474         } while (rv == -1);
 475     }
 476
 477  err:
 478     OPENSSL_free(host);
 479     OPENSSL_free(path);
 480     OPENSSL_free(port);
 481     BIO_free_all(bio);
 482     OCSP_REQ_CTX_free(rctx);
 483     if (rv != 1) {
 484         BIO_printf(bio_err, "Error loading %s from %s\n",
 485                    pcert ? "certificate" : "CRL", url);
 486         ERR_print_errors(bio_err);
 487     }
 488     return rv;
 489 }
 490 #endif
 491
 492 X509 *load_cert(const char *file, int format, const char *cert_descrip)
 493 {
 494     X509 *x = NULL;
 495     BIO *cert;
 496
 497     if (format == FORMAT_HTTP) {
 498 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 499         load_cert_crl_http(file, &x, NULL);
 500 #endif
 501         return x;
 502     }
 503
 504     if (file == NULL) {
 505         unbuffer(stdin);
 506         cert = dup_bio_in(format);
 507     } else {
 508         cert = bio_open_default(file, 'r', format);
 509     }
 510     if (cert == NULL)
 511         goto end;
 512
 513     if (format == FORMAT_ASN1) {
 514         x = d2i_X509_bio(cert, NULL);
 515     } else if (format == FORMAT_PEM) {
 516         x = PEM_read_bio_X509_AUX(cert, NULL,
 517                                   (pem_password_cb *)password_callback, NULL);
 518     } else if (format == FORMAT_PKCS12) {
 519         if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
 520             goto end;
 521     } else {
 522         BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
 523         goto end;
 524     }
 525  end:
 526     if (x == NULL) {
 527         BIO_printf(bio_err, "unable to load certificate\n");
 528         ERR_print_errors(bio_err);
 529     }
 530     BIO_free(cert);
 531     return x;
 532 }
 533
 534 X509_CRL *load_crl(const char *infile, int format)
 535 {
 536     X509_CRL *x = NULL;
 537     BIO *in = NULL;
 538
 539     if (format == FORMAT_HTTP) {
 540 #if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
 541         load_cert_crl_http(infile, NULL, &x);
 542 #endif
 543         return x;
 544     }
 545
 546     in = bio_open_default(infile, 'r', format);
 547     if (in == NULL)
 548         goto end;
 549     if (format == FORMAT_ASN1) {
 550         x = d2i_X509_CRL_bio(in, NULL);
 551     } else if (format == FORMAT_PEM) {
 552         x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
 553     } else {
 554         BIO_printf(bio_err, "bad input format specified for input crl\n");
 555         goto end;
 556     }
 557     if (x == NULL) {
 558         BIO_printf(bio_err, "unable to load CRL\n");
 559         ERR_print_errors(bio_err);
 560         goto end;
 561     }
 562
 563  end:
 564     BIO_free(in);
 565     return x;
 566 }
 567
 568 EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
 569                    const char *pass, ENGINE *e, const char *key_descrip)
 570 {
 571     BIO *key = NULL;
 572     EVP_PKEY *pkey = NULL;
 573     PW_CB_DATA cb_data;
 574
 575     cb_data.password = pass;
 576     cb_data.prompt_info = file;
 577
 578     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 579         BIO_printf(bio_err, "no keyfile specified\n");
 580         goto end;
 581     }
 582     if (format == FORMAT_ENGINE) {
 583         if (e == NULL) {
 584             BIO_printf(bio_err, "no engine specified\n");
 585         } else {
 586 #ifndef OPENSSL_NO_ENGINE
 587             if (ENGINE_init(e)) {
 588                 pkey = ENGINE_load_private_key(e, file,
 589                                                (UI_METHOD *)get_ui_method(),
 590                                                &cb_data);
 591                 ENGINE_finish(e);
 592             }
 593             if (pkey == NULL) {
 594                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 595                 ERR_print_errors(bio_err);
 596             }
 597 #else
 598             BIO_printf(bio_err, "engines not supported\n");
 599 #endif
 600         }
 601         goto end;
 602     }
 603     if (file == NULL && maybe_stdin) {
 604         unbuffer(stdin);
 605         key = dup_bio_in(format);
 606     } else {
 607         key = bio_open_default(file, 'r', format);
 608     }
 609     if (key == NULL)
 610         goto end;
 611     if (format == FORMAT_ASN1) {
 612         pkey = d2i_PrivateKey_bio(key, NULL);
 613     } else if (format == FORMAT_PEM) {
 614         pkey = PEM_read_bio_PrivateKey(key, NULL, wrap_password_callback, &cb_data);
 615     } else if (format == FORMAT_PKCS12) {
 616         if (!load_pkcs12(key, key_descrip, wrap_password_callback, &cb_data,
 617                          &pkey, NULL, NULL))
 618             goto end;
 619 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
 620     } else if (format == FORMAT_MSBLOB) {
 621         pkey = b2i_PrivateKey_bio(key);
 622     } else if (format == FORMAT_PVK) {
 623         pkey = b2i_PVK_bio(key, wrap_password_callback, &cb_data);
 624 #endif
 625     } else {
 626         BIO_printf(bio_err, "bad input format specified for key file\n");
 627         goto end;
 628     }
 629  end:
 630     BIO_free(key);
 631     if (pkey == NULL) {
 632         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 633         ERR_print_errors(bio_err);
 634     }
 635     return pkey;
 636 }
 637
 638 EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
 639                       const char *pass, ENGINE *e, const char *key_descrip)
 640 {
 641     BIO *key = NULL;
 642     EVP_PKEY *pkey = NULL;
 643     PW_CB_DATA cb_data;
 644
 645     cb_data.password = pass;
 646     cb_data.prompt_info = file;
 647
 648     if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
 649         BIO_printf(bio_err, "no keyfile specified\n");
 650         goto end;
 651     }
 652     if (format == FORMAT_ENGINE) {
 653         if (e == NULL) {
 654             BIO_printf(bio_err, "no engine specified\n");
 655         } else {
 656 #ifndef OPENSSL_NO_ENGINE
 657             pkey = ENGINE_load_public_key(e, file, (UI_METHOD *)get_ui_method(),
 658                                           &cb_data);
 659             if (pkey == NULL) {
 660                 BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
 661                 ERR_print_errors(bio_err);
 662             }
 663 #else
 664             BIO_printf(bio_err, "engines not supported\n");
 665 #endif
 666         }
 667         goto end;
 668     }
 669     if (file == NULL && maybe_stdin) {
 670         unbuffer(stdin);
 671         key = dup_bio_in(format);
 672     } else {
 673         key = bio_open_default(file, 'r', format);
 674     }
 675     if (key == NULL)
 676         goto end;
 677     if (format == FORMAT_ASN1) {
 678         pkey = d2i_PUBKEY_bio(key, NULL);
 679     } else if (format == FORMAT_ASN1RSA) {
 680 #ifndef OPENSSL_NO_RSA
 681         RSA *rsa;
 682         rsa = d2i_RSAPublicKey_bio(key, NULL);
 683         if (rsa) {
 684             pkey = EVP_PKEY_new();
 685             if (pkey != NULL)
 686                 EVP_PKEY_set1_RSA(pkey, rsa);
 687             RSA_free(rsa);
 688         } else
 689 #else
 690         BIO_printf(bio_err, "RSA keys not supported\n");
 691 #endif
 692             pkey = NULL;
 693     } else if (format == FORMAT_PEMRSA) {
 694 #ifndef OPENSSL_NO_RSA
 695         RSA *rsa;
 696         rsa = PEM_read_bio_RSAPublicKey(key, NULL,
 697                                         (pem_password_cb *)password_callback,
 698                                         &cb_data);
 699         if (rsa != NULL) {
 700             pkey = EVP_PKEY_new();
 701             if (pkey != NULL)
 702                 EVP_PKEY_set1_RSA(pkey, rsa);
 703             RSA_free(rsa);
 704         } else
 705 #else
 706         BIO_printf(bio_err, "RSA keys not supported\n");
 707 #endif
 708             pkey = NULL;
 709     } else if (format == FORMAT_PEM) {
 710         pkey = PEM_read_bio_PUBKEY(key, NULL,
 711                                    (pem_password_cb *)password_callback,
 712                                    &cb_data);
 713 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
 714     } else if (format == FORMAT_MSBLOB) {
 715         pkey = b2i_PublicKey_bio(key);
 716 #endif
 717     }
 718  end:
 719     BIO_free(key);
 720     if (pkey == NULL)
 721         BIO_printf(bio_err, "unable to load %s\n", key_descrip);
 722     return pkey;
 723 }
 724
 725 static int load_certs_crls(const char *file, int format,
 726                            const char *pass, const char *desc,
 727                            STACK_OF(X509) **pcerts,
 728                            STACK_OF(X509_CRL) **pcrls)
 729 {
 730     int i;
 731     BIO *bio;
 732     STACK_OF(X509_INFO) *xis = NULL;
 733     X509_INFO *xi;
 734     PW_CB_DATA cb_data;
 735     int rv = 0;
 736
 737     cb_data.password = pass;
 738     cb_data.prompt_info = file;
 739
 740     if (format != FORMAT_PEM) {
 741         BIO_printf(bio_err, "bad input format specified for %s\n", desc);
 742         return 0;
 743     }
 744
 745     bio = bio_open_default(file, 'r', FORMAT_PEM);
 746     if (bio == NULL)
 747         return 0;
 748
 749     xis = PEM_X509_INFO_read_bio(bio, NULL,
 750                                  (pem_password_cb *)password_callback,
 751                                  &cb_data);
 752
 753     BIO_free(bio);
 754
 755     if (pcerts != NULL && *pcerts == NULL) {
 756         *pcerts = sk_X509_new_null();
 757         if (*pcerts == NULL)
 758             goto end;
 759     }
 760
 761     if (pcrls != NULL && *pcrls == NULL) {
 762         *pcrls = sk_X509_CRL_new_null();
 763         if (*pcrls == NULL)
 764             goto end;
 765     }
 766
 767     for (i = 0; i < sk_X509_INFO_num(xis); i++) {
 768         xi = sk_X509_INFO_value(xis, i);
 769         if (xi->x509 != NULL && pcerts != NULL) {
 770             if (!sk_X509_push(*pcerts, xi->x509))
 771                 goto end;
 772             xi->x509 = NULL;
 773         }
 774         if (xi->crl != NULL && pcrls != NULL) {
 775             if (!sk_X509_CRL_push(*pcrls, xi->crl))
 776                 goto end;
 777             xi->crl = NULL;
 778         }
 779     }
 780
 781     if (pcerts != NULL && sk_X509_num(*pcerts) > 0)
 782         rv = 1;
 783
 784     if (pcrls != NULL && sk_X509_CRL_num(*pcrls) > 0)
 785         rv = 1;
 786
 787  end:
 788
 789     sk_X509_INFO_pop_free(xis, X509_INFO_free);
 790
 791     if (rv == 0) {
 792         if (pcerts != NULL) {
 793             sk_X509_pop_free(*pcerts, X509_free);
 794             *pcerts = NULL;
 795         }
 796         if (pcrls != NULL) {
 797             sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
 798             *pcrls = NULL;
 799         }
 800         BIO_printf(bio_err, "unable to load %s\n",
 801                    pcerts ? "certificates" : "CRLs");
 802         ERR_print_errors(bio_err);
 803     }
 804     return rv;
 805 }
 806
 807 void* app_malloc(int sz, const char *what)
 808 {
 809     void *vp = OPENSSL_malloc(sz);
 810
 811     if (vp == NULL) {
 812         BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
 813                 opt_getprog(), sz, what);
 814         ERR_print_errors(bio_err);
 815         exit(1);
 816     }
 817     return vp;
 818 }
 819
 820 /*
 821  * Initialize or extend, if *certs != NULL, a certificate stack.
 822  */
 823 int load_certs(const char *file, STACK_OF(X509) **certs, int format,
 824                const char *pass, const char *desc)
 825 {
 826     return load_certs_crls(file, format, pass, desc, certs, NULL);
 827 }
 828
 829 /*
 830  * Initialize or extend, if *crls != NULL, a certificate stack.
 831  */
 832 int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
 833               const char *pass, const char *desc)
 834 {
 835     return load_certs_crls(file, format, pass, desc, NULL, crls);
 836 }
 837
 838 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 839 /* Return error for unknown extensions */
 840 #define X509V3_EXT_DEFAULT              0
 841 /* Print error for unknown extensions */
 842 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 843 /* ASN1 parse unknown extensions */
 844 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 845 /* BIO_dump unknown extensions */
 846 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 847
 848 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 849                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 850
 851 int set_cert_ex(unsigned long *flags, const char *arg)
 852 {
 853     static const NAME_EX_TBL cert_tbl[] = {
 854         {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
 855         {"ca_default", X509_FLAG_CA, 0xffffffffl},
 856         {"no_header", X509_FLAG_NO_HEADER, 0},
 857         {"no_version", X509_FLAG_NO_VERSION, 0},
 858         {"no_serial", X509_FLAG_NO_SERIAL, 0},
 859         {"no_signame", X509_FLAG_NO_SIGNAME, 0},
 860         {"no_validity", X509_FLAG_NO_VALIDITY, 0},
 861         {"no_subject", X509_FLAG_NO_SUBJECT, 0},
 862         {"no_issuer", X509_FLAG_NO_ISSUER, 0},
 863         {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
 864         {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
 865         {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
 866         {"no_aux", X509_FLAG_NO_AUX, 0},
 867         {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
 868         {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
 869         {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 870         {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 871         {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 872         {NULL, 0, 0}
 873     };
 874     return set_multi_opts(flags, arg, cert_tbl);
 875 }
 876
 877 int set_name_ex(unsigned long *flags, const char *arg)
 878 {
 879     static const NAME_EX_TBL ex_tbl[] = {
 880         {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
 881         {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
 882         {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
 883         {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
 884         {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
 885         {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
 886         {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
 887         {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
 888         {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
 889         {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
 890         {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
 891         {"compat", XN_FLAG_COMPAT, 0xffffffffL},
 892         {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
 893         {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
 894         {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
 895         {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
 896         {"dn_rev", XN_FLAG_DN_REV, 0},
 897         {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
 898         {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
 899         {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
 900         {"align", XN_FLAG_FN_ALIGN, 0},
 901         {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
 902         {"space_eq", XN_FLAG_SPC_EQ, 0},
 903         {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
 904         {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
 905         {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
 906         {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
 907         {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
 908         {NULL, 0, 0}
 909     };
 910     if (set_multi_opts(flags, arg, ex_tbl) == 0)
 911         return 0;
 912     if (*flags != XN_FLAG_COMPAT
 913         && (*flags & XN_FLAG_SEP_MASK) == 0)
 914         *flags |= XN_FLAG_SEP_CPLUS_SPC;
 915     return 1;
 916 }
 917
 918 int set_ext_copy(int *copy_type, const char *arg)
 919 {
 920     if (strcasecmp(arg, "none") == 0)
 921         *copy_type = EXT_COPY_NONE;
 922     else if (strcasecmp(arg, "copy") == 0)
 923         *copy_type = EXT_COPY_ADD;
 924     else if (strcasecmp(arg, "copyall") == 0)
 925         *copy_type = EXT_COPY_ALL;
 926     else
 927         return 0;
 928     return 1;
 929 }
 930
 931 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
 932 {
 933     STACK_OF(X509_EXTENSION) *exts = NULL;
 934     X509_EXTENSION *ext, *tmpext;
 935     ASN1_OBJECT *obj;
 936     int i, idx, ret = 0;
 937     if (!x || !req || (copy_type == EXT_COPY_NONE))
 938         return 1;
 939     exts = X509_REQ_get_extensions(req);
 940
 941     for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
 942         ext = sk_X509_EXTENSION_value(exts, i);
 943         obj = X509_EXTENSION_get_object(ext);
 944         idx = X509_get_ext_by_OBJ(x, obj, -1);
 945         /* Does extension exist? */
 946         if (idx != -1) {
 947             /* If normal copy don't override existing extension */
 948             if (copy_type == EXT_COPY_ADD)
 949                 continue;
 950             /* Delete all extensions of same type */
 951             do {
 952                 tmpext = X509_get_ext(x, idx);
 953                 X509_delete_ext(x, idx);
 954                 X509_EXTENSION_free(tmpext);
 955                 idx = X509_get_ext_by_OBJ(x, obj, -1);
 956             } while (idx != -1);
 957         }
 958         if (!X509_add_ext(x, ext, -1))
 959             goto end;
 960     }
 961
 962     ret = 1;
 963
 964  end:
 965
 966     sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
 967
 968     return ret;
 969 }
 970
 971 static int set_multi_opts(unsigned long *flags, const char *arg,
 972                           const NAME_EX_TBL * in_tbl)
 973 {
 974     STACK_OF(CONF_VALUE) *vals;
 975     CONF_VALUE *val;
 976     int i, ret = 1;
 977     if (!arg)
 978         return 0;
 979     vals = X509V3_parse_list(arg);
 980     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
 981         val = sk_CONF_VALUE_value(vals, i);
 982         if (!set_table_opts(flags, val->name, in_tbl))
 983             ret = 0;
 984     }
 985     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
 986     return ret;
 987 }
 988
 989 static int set_table_opts(unsigned long *flags, const char *arg,
 990                           const NAME_EX_TBL * in_tbl)
 991 {
 992     char c;
 993     const NAME_EX_TBL *ptbl;
 994     c = arg[0];
 995
 996     if (c == '-') {
 997         c = 0;
 998         arg++;
 999     } else if (c == '+') {
1000         c = 1;
1001         arg++;
1002     } else {
1003         c = 1;
1004     }
1005
1006     for (ptbl = in_tbl; ptbl->name; ptbl++) {
1007         if (strcasecmp(arg, ptbl->name) == 0) {
1008             *flags &= ~ptbl->mask;
1009             if (c)
1010                 *flags |= ptbl->flag;
1011             else
1012                 *flags &= ~ptbl->flag;
1013             return 1;
1014         }
1015     }
1016     return 0;
1017 }
1018
1019 void print_name(BIO *out, const char *title, X509_NAME *nm,
1020                 unsigned long lflags)
1021 {
1022     char *buf;
1023     char mline = 0;
1024     int indent = 0;
1025
1026     if (title)
1027         BIO_puts(out, title);
1028     if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1029         mline = 1;
1030         indent = 4;
1031     }
1032     if (lflags == XN_FLAG_COMPAT) {
1033         buf = X509_NAME_oneline(nm, 0, 0);
1034         BIO_puts(out, buf);
1035         BIO_puts(out, "\n");
1036         OPENSSL_free(buf);
1037     } else {
1038         if (mline)
1039             BIO_puts(out, "\n");
1040         X509_NAME_print_ex(out, nm, indent, lflags);
1041         BIO_puts(out, "\n");
1042     }
1043 }
1044
1045 void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1046                       int len, unsigned char *buffer)
1047 {
1048     BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1049     if (BN_is_zero(in)) {
1050         BIO_printf(out, "\n        0x00");
1051     } else {
1052         int i, l;
1053
1054         l = BN_bn2bin(in, buffer);
1055         for (i = 0; i < l; i++) {
1056             BIO_printf(out, (i % 10) == 0 ? "\n        " : " ");
1057             if (i < l - 1)
1058                 BIO_printf(out, "0x%02X,", buffer[i]);
1059             else
1060                 BIO_printf(out, "0x%02X", buffer[i]);
1061         }
1062     }
1063     BIO_printf(out, "\n    };\n");
1064 }
1065
1066 void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1067 {
1068     int i;
1069
1070     BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1071     for (i = 0; i < len; i++) {
1072         if ((i % 10) == 0)
1073             BIO_printf(out, "\n    ");
1074         if (i < len - 1)
1075             BIO_printf(out, "0x%02X, ", d[i]);
1076         else
1077             BIO_printf(out, "0x%02X", d[i]);
1078     }
1079     BIO_printf(out, "\n};\n");
1080 }
1081
1082 X509_STORE *setup_verify(const char *CAfile, int noCAfile,
1083                          const char *CApath, int noCApath,
1084                          const char *CAstore, int noCAstore)
1085 {
1086     X509_STORE *store = X509_STORE_new();
1087     X509_LOOKUP *lookup;
1088
1089     if (store == NULL)
1090         goto end;
1091
1092     if (CAfile != NULL || !noCAfile) {
1093         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1094         if (lookup == NULL)
1095             goto end;
1096         if (CAfile != NULL) {
1097             if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1098                 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1099                 goto end;
1100             }
1101         } else {
1102             X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1103         }
1104     }
1105
1106     if (CApath != NULL || !noCApath) {
1107         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1108         if (lookup == NULL)
1109             goto end;
1110         if (CApath != NULL) {
1111             if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1112                 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1113                 goto end;
1114             }
1115         } else {
1116             X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1117         }
1118     }
1119
1120     if (CAstore != NULL || !noCAstore) {
1121         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_store());
1122         if (lookup == NULL)
1123             goto end;
1124         if (!X509_LOOKUP_add_store(lookup, CAstore)) {
1125             if (CAstore != NULL)
1126                 BIO_printf(bio_err, "Error loading store URI %s\n", CAstore);
1127             goto end;
1128         }
1129     }
1130
1131     ERR_clear_error();
1132     return store;
1133  end:
1134     X509_STORE_free(store);
1135     return NULL;
1136 }
1137
1138 #ifndef OPENSSL_NO_ENGINE
1139 /* Try to load an engine in a shareable library */
1140 static ENGINE *try_load_engine(const char *engine)
1141 {
1142     ENGINE *e = ENGINE_by_id("dynamic");
1143     if (e) {
1144         if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1145             || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1146             ENGINE_free(e);
1147             e = NULL;
1148         }
1149     }
1150     return e;
1151 }
1152 #endif
1153
1154 ENGINE *setup_engine(const char *engine, int debug)
1155 {
1156     ENGINE *e = NULL;
1157
1158 #ifndef OPENSSL_NO_ENGINE
1159     if (engine != NULL) {
1160         if (strcmp(engine, "auto") == 0) {
1161             BIO_printf(bio_err, "enabling auto ENGINE support\n");
1162             ENGINE_register_all_complete();
1163             return NULL;
1164         }
1165         if ((e = ENGINE_by_id(engine)) == NULL
1166             && (e = try_load_engine(engine)) == NULL) {
1167             BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1168             ERR_print_errors(bio_err);
1169             return NULL;
1170         }
1171         if (debug) {
1172             ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1173         }
1174         ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, (void *)get_ui_method(),
1175                         0, 1);
1176         if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1177             BIO_printf(bio_err, "can't use that engine\n");
1178             ERR_print_errors(bio_err);
1179             ENGINE_free(e);
1180             return NULL;
1181         }
1182
1183         BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1184     }
1185 #endif
1186     return e;
1187 }
1188
1189 void release_engine(ENGINE *e)
1190 {
1191 #ifndef OPENSSL_NO_ENGINE
1192     if (e != NULL)
1193         /* Free our "structural" reference. */
1194         ENGINE_free(e);
1195 #endif
1196 }
1197
1198 static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1199 {
1200     const char *n;
1201
1202     n = a[DB_serial];
1203     while (*n == '0')
1204         n++;
1205     return OPENSSL_LH_strhash(n);
1206 }
1207
1208 static int index_serial_cmp(const OPENSSL_CSTRING *a,
1209                             const OPENSSL_CSTRING *b)
1210 {
1211     const char *aa, *bb;
1212
1213     for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1214     for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1215     return strcmp(aa, bb);
1216 }
1217
1218 static int index_name_qual(char **a)
1219 {
1220     return (a[0][0] == 'V');
1221 }
1222
1223 static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1224 {
1225     return OPENSSL_LH_strhash(a[DB_name]);
1226 }
1227
1228 int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1229 {
1230     return strcmp(a[DB_name], b[DB_name]);
1231 }
1232
1233 static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1234 static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1235 static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1236 static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1237 #undef BSIZE
1238 #define BSIZE 256
1239 BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai)
1240 {
1241     BIO *in = NULL;
1242     BIGNUM *ret = NULL;
1243     char buf[1024];
1244     ASN1_INTEGER *ai = NULL;
1245
1246     ai = ASN1_INTEGER_new();
1247     if (ai == NULL)
1248         goto err;
1249
1250     in = BIO_new_file(serialfile, "r");
1251     if (in == NULL) {
1252         if (!create) {
1253             perror(serialfile);
1254             goto err;
1255         }
1256         ERR_clear_error();
1257         ret = BN_new();
1258         if (ret == NULL || !rand_serial(ret, ai))
1259             BIO_printf(bio_err, "Out of memory\n");
1260     } else {
1261         if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1262             BIO_printf(bio_err, "unable to load number from %s\n",
1263                        serialfile);
1264             goto err;
1265         }
1266         ret = ASN1_INTEGER_to_BN(ai, NULL);
1267         if (ret == NULL) {
1268             BIO_printf(bio_err,
1269                        "error converting number from bin to BIGNUM\n");
1270             goto err;
1271         }
1272     }
1273
1274     if (ret && retai) {
1275         *retai = ai;
1276         ai = NULL;
1277     }
1278  err:
1279     BIO_free(in);
1280     ASN1_INTEGER_free(ai);
1281     return ret;
1282 }
1283
1284 int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1285                 ASN1_INTEGER **retai)
1286 {
1287     char buf[1][BSIZE];
1288     BIO *out = NULL;
1289     int ret = 0;
1290     ASN1_INTEGER *ai = NULL;
1291     int j;
1292
1293     if (suffix == NULL)
1294         j = strlen(serialfile);
1295     else
1296         j = strlen(serialfile) + strlen(suffix) + 1;
1297     if (j >= BSIZE) {
1298         BIO_printf(bio_err, "file name too long\n");
1299         goto err;
1300     }
1301
1302     if (suffix == NULL)
1303         OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1304     else {
1305 #ifndef OPENSSL_SYS_VMS
1306         j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, suffix);
1307 #else
1308         j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, suffix);
1309 #endif
1310     }
1311     out = BIO_new_file(buf[0], "w");
1312     if (out == NULL) {
1313         ERR_print_errors(bio_err);
1314         goto err;
1315     }
1316
1317     if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1318         BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1319         goto err;
1320     }
1321     i2a_ASN1_INTEGER(out, ai);
1322     BIO_puts(out, "\n");
1323     ret = 1;
1324     if (retai) {
1325         *retai = ai;
1326         ai = NULL;
1327     }
1328  err:
1329     BIO_free_all(out);
1330     ASN1_INTEGER_free(ai);
1331     return ret;
1332 }
1333
1334 int rotate_serial(const char *serialfile, const char *new_suffix,
1335                   const char *old_suffix)
1336 {
1337     char buf[2][BSIZE];
1338     int i, j;
1339
1340     i = strlen(serialfile) + strlen(old_suffix);
1341     j = strlen(serialfile) + strlen(new_suffix);
1342     if (i > j)
1343         j = i;
1344     if (j + 1 >= BSIZE) {
1345         BIO_printf(bio_err, "file name too long\n");
1346         goto err;
1347     }
1348 #ifndef OPENSSL_SYS_VMS
1349     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, new_suffix);
1350     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", serialfile, old_suffix);
1351 #else
1352     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, new_suffix);
1353     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", serialfile, old_suffix);
1354 #endif
1355     if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1356 #ifdef ENOTDIR
1357         && errno != ENOTDIR
1358 #endif
1359         ) {
1360         BIO_printf(bio_err,
1361                    "unable to rename %s to %s\n", serialfile, buf[1]);
1362         perror("reason");
1363         goto err;
1364     }
1365     if (rename(buf[0], serialfile) < 0) {
1366         BIO_printf(bio_err,
1367                    "unable to rename %s to %s\n", buf[0], serialfile);
1368         perror("reason");
1369         rename(buf[1], serialfile);
1370         goto err;
1371     }
1372     return 1;
1373  err:
1374     return 0;
1375 }
1376
1377 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1378 {
1379     BIGNUM *btmp;
1380     int ret = 0;
1381
1382     btmp = b == NULL ? BN_new() : b;
1383     if (btmp == NULL)
1384         return 0;
1385
1386     if (!BN_rand(btmp, SERIAL_RAND_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
1387         goto error;
1388     if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1389         goto error;
1390
1391     ret = 1;
1392
1393  error:
1394
1395     if (btmp != b)
1396         BN_free(btmp);
1397
1398     return ret;
1399 }
1400
1401 CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1402 {
1403     CA_DB *retdb = NULL;
1404     TXT_DB *tmpdb = NULL;
1405     BIO *in;
1406     CONF *dbattr_conf = NULL;
1407     char buf[BSIZE];
1408 #ifndef OPENSSL_NO_POSIX_IO
1409     FILE *dbfp;
1410     struct stat dbst;
1411 #endif
1412
1413     in = BIO_new_file(dbfile, "r");
1414     if (in == NULL) {
1415         ERR_print_errors(bio_err);
1416         goto err;
1417     }
1418
1419 #ifndef OPENSSL_NO_POSIX_IO
1420     BIO_get_fp(in, &dbfp);
1421     if (fstat(fileno(dbfp), &dbst) == -1) {
1422         ERR_raise_data(ERR_LIB_SYS, errno,
1423                        "calling fstat(%s)", dbfile);
1424         ERR_print_errors(bio_err);
1425         goto err;
1426     }
1427 #endif
1428
1429     if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1430         goto err;
1431
1432 #ifndef OPENSSL_SYS_VMS
1433     BIO_snprintf(buf, sizeof(buf), "%s.attr", dbfile);
1434 #else
1435     BIO_snprintf(buf, sizeof(buf), "%s-attr", dbfile);
1436 #endif
1437     dbattr_conf = app_load_config_quiet(buf);
1438
1439     retdb = app_malloc(sizeof(*retdb), "new DB");
1440     retdb->db = tmpdb;
1441     tmpdb = NULL;
1442     if (db_attr)
1443         retdb->attributes = *db_attr;
1444     else {
1445         retdb->attributes.unique_subject = 1;
1446     }
1447
1448     if (dbattr_conf) {
1449         char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1450         if (p) {
1451             retdb->attributes.unique_subject = parse_yesno(p, 1);
1452         }
1453     }
1454
1455     retdb->dbfname = OPENSSL_strdup(dbfile);
1456 #ifndef OPENSSL_NO_POSIX_IO
1457     retdb->dbst = dbst;
1458 #endif
1459
1460  err:
1461     NCONF_free(dbattr_conf);
1462     TXT_DB_free(tmpdb);
1463     BIO_free_all(in);
1464     return retdb;
1465 }
1466
1467 /*
1468  * Returns > 0 on success, <= 0 on error
1469  */
1470 int index_index(CA_DB *db)
1471 {
1472     if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1473                              LHASH_HASH_FN(index_serial),
1474                              LHASH_COMP_FN(index_serial))) {
1475         BIO_printf(bio_err,
1476                    "error creating serial number index:(%ld,%ld,%ld)\n",
1477                    db->db->error, db->db->arg1, db->db->arg2);
1478         return 0;
1479     }
1480
1481     if (db->attributes.unique_subject
1482         && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1483                                 LHASH_HASH_FN(index_name),
1484                                 LHASH_COMP_FN(index_name))) {
1485         BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1486                    db->db->error, db->db->arg1, db->db->arg2);
1487         return 0;
1488     }
1489     return 1;
1490 }
1491
1492 int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1493 {
1494     char buf[3][BSIZE];
1495     BIO *out;
1496     int j;
1497
1498     j = strlen(dbfile) + strlen(suffix);
1499     if (j + 6 >= BSIZE) {
1500         BIO_printf(bio_err, "file name too long\n");
1501         goto err;
1502     }
1503 #ifndef OPENSSL_SYS_VMS
1504     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr", dbfile);
1505     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.attr.%s", dbfile, suffix);
1506     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, suffix);
1507 #else
1508     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr", dbfile);
1509     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-attr-%s", dbfile, suffix);
1510     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, suffix);
1511 #endif
1512     out = BIO_new_file(buf[0], "w");
1513     if (out == NULL) {
1514         perror(dbfile);
1515         BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1516         goto err;
1517     }
1518     j = TXT_DB_write(out, db->db);
1519     BIO_free(out);
1520     if (j <= 0)
1521         goto err;
1522
1523     out = BIO_new_file(buf[1], "w");
1524     if (out == NULL) {
1525         perror(buf[2]);
1526         BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1527         goto err;
1528     }
1529     BIO_printf(out, "unique_subject = %s\n",
1530                db->attributes.unique_subject ? "yes" : "no");
1531     BIO_free(out);
1532
1533     return 1;
1534  err:
1535     return 0;
1536 }
1537
1538 int rotate_index(const char *dbfile, const char *new_suffix,
1539                  const char *old_suffix)
1540 {
1541     char buf[5][BSIZE];
1542     int i, j;
1543
1544     i = strlen(dbfile) + strlen(old_suffix);
1545     j = strlen(dbfile) + strlen(new_suffix);
1546     if (i > j)
1547         j = i;
1548     if (j + 6 >= BSIZE) {
1549         BIO_printf(bio_err, "file name too long\n");
1550         goto err;
1551     }
1552 #ifndef OPENSSL_SYS_VMS
1553     j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s.attr", dbfile);
1554     j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s.attr.%s", dbfile, old_suffix);
1555     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr.%s", dbfile, new_suffix);
1556     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", dbfile, old_suffix);
1557     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, new_suffix);
1558 #else
1559     j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s-attr", dbfile);
1560     j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s-attr-%s", dbfile, old_suffix);
1561     j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr-%s", dbfile, new_suffix);
1562     j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", dbfile, old_suffix);
1563     j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, new_suffix);
1564 #endif
1565     if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1566 #ifdef ENOTDIR
1567         && errno != ENOTDIR
1568 #endif
1569         ) {
1570         BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1571         perror("reason");
1572         goto err;
1573     }
1574     if (rename(buf[0], dbfile) < 0) {
1575         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1576         perror("reason");
1577         rename(buf[1], dbfile);
1578         goto err;
1579     }
1580     if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1581 #ifdef ENOTDIR
1582         && errno != ENOTDIR
1583 #endif
1584         ) {
1585         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1586         perror("reason");
1587         rename(dbfile, buf[0]);
1588         rename(buf[1], dbfile);
1589         goto err;
1590     }
1591     if (rename(buf[2], buf[4]) < 0) {
1592         BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1593         perror("reason");
1594         rename(buf[3], buf[4]);
1595         rename(dbfile, buf[0]);
1596         rename(buf[1], dbfile);
1597         goto err;
1598     }
1599     return 1;
1600  err:
1601     return 0;
1602 }
1603
1604 void free_index(CA_DB *db)
1605 {
1606     if (db) {
1607         TXT_DB_free(db->db);
1608         OPENSSL_free(db->dbfname);
1609         OPENSSL_free(db);
1610     }
1611 }
1612
1613 int parse_yesno(const char *str, int def)
1614 {
1615     if (str) {
1616         switch (*str) {
1617         case 'f':              /* false */
1618         case 'F':              /* FALSE */
1619         case 'n':              /* no */
1620         case 'N':              /* NO */
1621         case '0':              /* 0 */
1622             return 0;
1623         case 't':              /* true */
1624         case 'T':              /* TRUE */
1625         case 'y':              /* yes */
1626         case 'Y':              /* YES */
1627         case '1':              /* 1 */
1628             return 1;
1629         }
1630     }
1631     return def;
1632 }
1633
1634 /*
1635  * name is expected to be in the format /type0=value0/type1=value1/type2=...
1636  * where characters may be escaped by \
1637  */
1638 X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1639 {
1640     int nextismulti = 0;
1641     char *work;
1642     X509_NAME *n;
1643
1644     if (*cp++ != '/') {
1645         BIO_printf(bio_err,
1646                    "name is expected to be in the format "
1647                    "/type0=value0/type1=value1/type2=... where characters may "
1648                    "be escaped by \\. This name is not in that format: '%s'\n",
1649                    --cp);
1650         return NULL;
1651     }
1652
1653     n = X509_NAME_new();
1654     if (n == NULL)
1655         return NULL;
1656     work = OPENSSL_strdup(cp);
1657     if (work == NULL) {
1658         BIO_printf(bio_err, "%s: Error copying name input\n", opt_getprog());
1659         goto err;
1660     }
1661
1662     while (*cp) {
1663         char *bp = work;
1664         char *typestr = bp;
1665         unsigned char *valstr;
1666         int nid;
1667         int ismulti = nextismulti;
1668         nextismulti = 0;
1669
1670         /* Collect the type */
1671         while (*cp && *cp != '=')
1672             *bp++ = *cp++;
1673         if (*cp == '\0') {
1674             BIO_printf(bio_err,
1675                     "%s: Hit end of string before finding the '='\n",
1676                     opt_getprog());
1677             goto err;
1678         }
1679         *bp++ = '\0';
1680         ++cp;
1681
1682         /* Collect the value. */
1683         valstr = (unsigned char *)bp;
1684         for (; *cp && *cp != '/'; *bp++ = *cp++) {
1685             if (canmulti && *cp == '+') {
1686                 nextismulti = 1;
1687                 break;
1688             }
1689             if (*cp == '\\' && *++cp == '\0') {
1690                 BIO_printf(bio_err,
1691                            "%s: escape character at end of string\n",
1692                            opt_getprog());
1693                 goto err;
1694             }
1695         }
1696         *bp++ = '\0';
1697
1698         /* If not at EOS (must be + or /), move forward. */
1699         if (*cp)
1700             ++cp;
1701
1702         /* Parse */
1703         nid = OBJ_txt2nid(typestr);
1704         if (nid == NID_undef) {
1705             BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1706                        opt_getprog(), typestr);
1707             continue;
1708         }
1709         if (*valstr == '\0') {
1710             BIO_printf(bio_err,
1711                        "%s: No value provided for Subject Attribute %s, skipped\n",
1712                        opt_getprog(), typestr);
1713             continue;
1714         }
1715         if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1716                                         valstr, strlen((char *)valstr),
1717                                         -1, ismulti ? -1 : 0)) {
1718             BIO_printf(bio_err, "%s: Error adding name attribute \"/%s=%s\"\n",
1719                        opt_getprog(), typestr ,valstr);
1720             goto err;
1721         }
1722     }
1723
1724     OPENSSL_free(work);
1725     return n;
1726
1727  err:
1728     X509_NAME_free(n);
1729     OPENSSL_free(work);
1730     return NULL;
1731 }
1732
1733 /*
1734  * Read whole contents of a BIO into an allocated memory buffer and return
1735  * it.
1736  */
1737
1738 int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1739 {
1740     BIO *mem;
1741     int len, ret;
1742     unsigned char tbuf[1024];
1743
1744     mem = BIO_new(BIO_s_mem());
1745     if (mem == NULL)
1746         return -1;
1747     for (;;) {
1748         if ((maxlen != -1) && maxlen < 1024)
1749             len = maxlen;
1750         else
1751             len = 1024;
1752         len = BIO_read(in, tbuf, len);
1753         if (len < 0) {
1754             BIO_free(mem);
1755             return -1;
1756         }
1757         if (len == 0)
1758             break;
1759         if (BIO_write(mem, tbuf, len) != len) {
1760             BIO_free(mem);
1761             return -1;
1762         }
1763         maxlen -= len;
1764
1765         if (maxlen == 0)
1766             break;
1767     }
1768     ret = BIO_get_mem_data(mem, (char **)out);
1769     BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1770     BIO_free(mem);
1771     return ret;
1772 }
1773
1774 int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1775 {
1776     int rv;
1777     char *stmp, *vtmp = NULL;
1778     stmp = OPENSSL_strdup(value);
1779     if (!stmp)
1780         return -1;
1781     vtmp = strchr(stmp, ':');
1782     if (vtmp) {
1783         *vtmp = 0;
1784         vtmp++;
1785     }
1786     rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1787     OPENSSL_free(stmp);
1788     return rv;
1789 }
1790
1791 static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1792 {
1793     X509_POLICY_NODE *node;
1794     int i;
1795
1796     BIO_printf(bio_err, "%s Policies:", name);
1797     if (nodes) {
1798         BIO_puts(bio_err, "\n");
1799         for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1800             node = sk_X509_POLICY_NODE_value(nodes, i);
1801             X509_POLICY_NODE_print(bio_err, node, 2);
1802         }
1803     } else {
1804         BIO_puts(bio_err, " <empty>\n");
1805     }
1806 }
1807
1808 void policies_print(X509_STORE_CTX *ctx)
1809 {
1810     X509_POLICY_TREE *tree;
1811     int explicit_policy;
1812     tree = X509_STORE_CTX_get0_policy_tree(ctx);
1813     explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1814
1815     BIO_printf(bio_err, "Require explicit Policy: %s\n",
1816                explicit_policy ? "True" : "False");
1817
1818     nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1819     nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1820 }
1821
1822 /*-
1823  * next_protos_parse parses a comma separated list of strings into a string
1824  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1825  *   outlen: (output) set to the length of the resulting buffer on success.
1826  *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1827  *   in: a NUL terminated string like "abc,def,ghi"
1828  *
1829  *   returns: a malloc'd buffer or NULL on failure.
1830  */
1831 unsigned char *next_protos_parse(size_t *outlen, const char *in)
1832 {
1833     size_t len;
1834     unsigned char *out;
1835     size_t i, start = 0;
1836     size_t skipped = 0;
1837
1838     len = strlen(in);
1839     if (len == 0 || len >= 65535)
1840         return NULL;
1841
1842     out = app_malloc(len + 1, "NPN buffer");
1843     for (i = 0; i <= len; ++i) {
1844         if (i == len || in[i] == ',') {
1845             /*
1846              * Zero-length ALPN elements are invalid on the wire, we could be
1847              * strict and reject the entire string, but just ignoring extra
1848              * commas seems harmless and more friendly.
1849              *
1850              * Every comma we skip in this way puts the input buffer another
1851              * byte ahead of the output buffer, so all stores into the output
1852              * buffer need to be decremented by the number commas skipped.
1853              */
1854             if (i == start) {
1855                 ++start;
1856                 ++skipped;
1857                 continue;
1858             }
1859             if (i - start > 255) {
1860                 OPENSSL_free(out);
1861                 return NULL;
1862             }
1863             out[start-skipped] = (unsigned char)(i - start);
1864             start = i + 1;
1865         } else {
1866             out[i + 1 - skipped] = in[i];
1867         }
1868     }
1869
1870     if (len <= skipped) {
1871         OPENSSL_free(out);
1872         return NULL;
1873     }
1874
1875     *outlen = len + 1 - skipped;
1876     return out;
1877 }
1878
1879 void print_cert_checks(BIO *bio, X509 *x,
1880                        const char *checkhost,
1881                        const char *checkemail, const char *checkip)
1882 {
1883     if (x == NULL)
1884         return;
1885     if (checkhost) {
1886         BIO_printf(bio, "Hostname %s does%s match certificate\n",
1887                    checkhost,
1888                    X509_check_host(x, checkhost, 0, 0, NULL) == 1
1889                        ? "" : " NOT");
1890     }
1891
1892     if (checkemail) {
1893         BIO_printf(bio, "Email %s does%s match certificate\n",
1894                    checkemail, X509_check_email(x, checkemail, 0, 0)
1895                    ? "" : " NOT");
1896     }
1897
1898     if (checkip) {
1899         BIO_printf(bio, "IP %s does%s match certificate\n",
1900                    checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
1901     }
1902 }
1903
1904 /* Get first http URL from a DIST_POINT structure */
1905
1906 static const char *get_dp_url(DIST_POINT *dp)
1907 {
1908     GENERAL_NAMES *gens;
1909     GENERAL_NAME *gen;
1910     int i, gtype;
1911     ASN1_STRING *uri;
1912     if (!dp->distpoint || dp->distpoint->type != 0)
1913         return NULL;
1914     gens = dp->distpoint->name.fullname;
1915     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
1916         gen = sk_GENERAL_NAME_value(gens, i);
1917         uri = GENERAL_NAME_get0_value(gen, &gtype);
1918         if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
1919             const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
1920             if (strncmp(uptr, "http://", 7) == 0)
1921                 return uptr;
1922         }
1923     }
1924     return NULL;
1925 }
1926
1927 /*
1928  * Look through a CRLDP structure and attempt to find an http URL to
1929  * downloads a CRL from.
1930  */
1931
1932 static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
1933 {
1934     int i;
1935     const char *urlptr = NULL;
1936     for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
1937         DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
1938         urlptr = get_dp_url(dp);
1939         if (urlptr)
1940             return load_crl(urlptr, FORMAT_HTTP);
1941     }
1942     return NULL;
1943 }
1944
1945 /*
1946  * Example of downloading CRLs from CRLDP: not usable for real world as it
1947  * always downloads, doesn't support non-blocking I/O and doesn't cache
1948  * anything.
1949  */
1950
1951 static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
1952 {
1953     X509 *x;
1954     STACK_OF(X509_CRL) *crls = NULL;
1955     X509_CRL *crl;
1956     STACK_OF(DIST_POINT) *crldp;
1957
1958     crls = sk_X509_CRL_new_null();
1959     if (!crls)
1960         return NULL;
1961     x = X509_STORE_CTX_get_current_cert(ctx);
1962     crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
1963     crl = load_crl_crldp(crldp);
1964     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
1965     if (!crl) {
1966         sk_X509_CRL_free(crls);
1967         return NULL;
1968     }
1969     sk_X509_CRL_push(crls, crl);
1970     /* Try to download delta CRL */
1971     crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
1972     crl = load_crl_crldp(crldp);
1973     sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
1974     if (crl)
1975         sk_X509_CRL_push(crls, crl);
1976     return crls;
1977 }
1978
1979 void store_setup_crl_download(X509_STORE *st)
1980 {
1981     X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
1982 }
1983
1984 /*
1985  * Platform-specific sections
1986  */
1987 #if defined(_WIN32)
1988 # ifdef fileno
1989 #  undef fileno
1990 #  define fileno(a) (int)_fileno(a)
1991 # endif
1992
1993 # include <windows.h>
1994 # include <tchar.h>
1995
1996 static int WIN32_rename(const char *from, const char *to)
1997 {
1998     TCHAR *tfrom = NULL, *tto;
1999     DWORD err;
2000     int ret = 0;
2001
2002     if (sizeof(TCHAR) == 1) {
2003         tfrom = (TCHAR *)from;
2004         tto = (TCHAR *)to;
2005     } else {                    /* UNICODE path */
2006
2007         size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2008         tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2009         if (tfrom == NULL)
2010             goto err;
2011         tto = tfrom + flen;
2012 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2013         if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2014 # endif
2015             for (i = 0; i < flen; i++)
2016                 tfrom[i] = (TCHAR)from[i];
2017 # if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2018         if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2019 # endif
2020             for (i = 0; i < tlen; i++)
2021                 tto[i] = (TCHAR)to[i];
2022     }
2023
2024     if (MoveFile(tfrom, tto))
2025         goto ok;
2026     err = GetLastError();
2027     if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2028         if (DeleteFile(tto) && MoveFile(tfrom, tto))
2029             goto ok;
2030         err = GetLastError();
2031     }
2032     if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2033         errno = ENOENT;
2034     else if (err == ERROR_ACCESS_DENIED)
2035         errno = EACCES;
2036     else
2037         errno = EINVAL;         /* we could map more codes... */
2038  err:
2039     ret = -1;
2040  ok:
2041     if (tfrom != NULL && tfrom != (TCHAR *)from)
2042         free(tfrom);
2043     return ret;
2044 }
2045 #endif
2046
2047 /* app_tminterval section */
2048 #if defined(_WIN32)
2049 double app_tminterval(int stop, int usertime)
2050 {
2051     FILETIME now;
2052     double ret = 0;
2053     static ULARGE_INTEGER tmstart;
2054     static int warning = 1;
2055 # ifdef _WIN32_WINNT
2056     static HANDLE proc = NULL;
2057
2058     if (proc == NULL) {
2059         if (check_winnt())
2060             proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2061                                GetCurrentProcessId());
2062         if (proc == NULL)
2063             proc = (HANDLE) - 1;
2064     }
2065
2066     if (usertime && proc != (HANDLE) - 1) {
2067         FILETIME junk;
2068         GetProcessTimes(proc, &junk, &junk, &junk, &now);
2069     } else
2070 # endif
2071     {
2072         SYSTEMTIME systime;
2073
2074         if (usertime && warning) {
2075             BIO_printf(bio_err, "To get meaningful results, run "
2076                        "this program on idle system.\n");
2077             warning = 0;
2078         }
2079         GetSystemTime(&systime);
2080         SystemTimeToFileTime(&systime, &now);
2081     }
2082
2083     if (stop == TM_START) {
2084         tmstart.u.LowPart = now.dwLowDateTime;
2085         tmstart.u.HighPart = now.dwHighDateTime;
2086     } else {
2087         ULARGE_INTEGER tmstop;
2088
2089         tmstop.u.LowPart = now.dwLowDateTime;
2090         tmstop.u.HighPart = now.dwHighDateTime;
2091
2092         ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2093     }
2094
2095     return ret;
2096 }
2097 #elif defined(OPENSSL_SYS_VXWORKS)
2098 # include <time.h>
2099
2100 double app_tminterval(int stop, int usertime)
2101 {
2102     double ret = 0;
2103 # ifdef CLOCK_REALTIME
2104     static struct timespec tmstart;
2105     struct timespec now;
2106 # else
2107     static unsigned long tmstart;
2108     unsigned long now;
2109 # endif
2110     static int warning = 1;
2111
2112     if (usertime && warning) {
2113         BIO_printf(bio_err, "To get meaningful results, run "
2114                    "this program on idle system.\n");
2115         warning = 0;
2116     }
2117 # ifdef CLOCK_REALTIME
2118     clock_gettime(CLOCK_REALTIME, &now);
2119     if (stop == TM_START)
2120         tmstart = now;
2121     else
2122         ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2123                - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2124 # else
2125     now = tickGet();
2126     if (stop == TM_START)
2127         tmstart = now;
2128     else
2129         ret = (now - tmstart) / (double)sysClkRateGet();
2130 # endif
2131     return ret;
2132 }
2133
2134 #elif defined(OPENSSL_SYSTEM_VMS)
2135 # include <time.h>
2136 # include <times.h>
2137
2138 double app_tminterval(int stop, int usertime)
2139 {
2140     static clock_t tmstart;
2141     double ret = 0;
2142     clock_t now;
2143 # ifdef __TMS
2144     struct tms rus;
2145
2146     now = times(&rus);
2147     if (usertime)
2148         now = rus.tms_utime;
2149 # else
2150     if (usertime)
2151         now = clock();          /* sum of user and kernel times */
2152     else {
2153         struct timeval tv;
2154         gettimeofday(&tv, NULL);
2155         now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2156                         (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2157             );
2158     }
2159 # endif
2160     if (stop == TM_START)
2161         tmstart = now;
2162     else
2163         ret = (now - tmstart) / (double)(CLK_TCK);
2164
2165     return ret;
2166 }
2167
2168 #elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2169 # include <sys/times.h>
2170
2171 double app_tminterval(int stop, int usertime)
2172 {
2173     double ret = 0;
2174     struct tms rus;
2175     clock_t now = times(&rus);
2176     static clock_t tmstart;
2177
2178     if (usertime)
2179         now = rus.tms_utime;
2180
2181     if (stop == TM_START) {
2182         tmstart = now;
2183     } else {
2184         long int tck = sysconf(_SC_CLK_TCK);
2185         ret = (now - tmstart) / (double)tck;
2186     }
2187
2188     return ret;
2189 }
2190
2191 #else
2192 # include <sys/time.h>
2193 # include <sys/resource.h>
2194
2195 double app_tminterval(int stop, int usertime)
2196 {
2197     double ret = 0;
2198     struct rusage rus;
2199     struct timeval now;
2200     static struct timeval tmstart;
2201
2202     if (usertime)
2203         getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2204     else
2205         gettimeofday(&now, NULL);
2206
2207     if (stop == TM_START)
2208         tmstart = now;
2209     else
2210         ret = ((now.tv_sec + now.tv_usec * 1e-6)
2211                - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2212
2213     return ret;
2214 }
2215 #endif
2216
2217 int app_access(const char* name, int flag)
2218 {
2219 #ifdef _WIN32
2220     return _access(name, flag);
2221 #else
2222     return access(name, flag);
2223 #endif
2224 }
2225
2226 int app_isdir(const char *name)
2227 {
2228     return opt_isdir(name);
2229 }
2230
2231 /* raw_read|write section */
2232 #if defined(__VMS)
2233 # include "vms_term_sock.h"
2234 static int stdin_sock = -1;
2235
2236 static void close_stdin_sock(void)
2237 {
2238     TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2239 }
2240
2241 int fileno_stdin(void)
2242 {
2243     if (stdin_sock == -1) {
2244         TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2245         atexit(close_stdin_sock);
2246     }
2247
2248     return stdin_sock;
2249 }
2250 #else
2251 int fileno_stdin(void)
2252 {
2253     return fileno(stdin);
2254 }
2255 #endif
2256
2257 int fileno_stdout(void)
2258 {
2259     return fileno(stdout);
2260 }
2261
2262 #if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2263 int raw_read_stdin(void *buf, int siz)
2264 {
2265     DWORD n;
2266     if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2267         return n;
2268     else
2269         return -1;
2270 }
2271 #elif defined(__VMS)
2272 # include <sys/socket.h>
2273
2274 int raw_read_stdin(void *buf, int siz)
2275 {
2276     return recv(fileno_stdin(), buf, siz, 0);
2277 }
2278 #else
2279 int raw_read_stdin(void *buf, int siz)
2280 {
2281     return read(fileno_stdin(), buf, siz);
2282 }
2283 #endif
2284
2285 #if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2286 int raw_write_stdout(const void *buf, int siz)
2287 {
2288     DWORD n;
2289     if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2290         return n;
2291     else
2292         return -1;
2293 }
2294 #else
2295 int raw_write_stdout(const void *buf, int siz)
2296 {
2297     return write(fileno_stdout(), buf, siz);
2298 }
2299 #endif
2300
2301 /*
2302  * Centralized handling of input and output files with format specification
2303  * The format is meant to show what the input and output is supposed to be,
2304  * and is therefore a show of intent more than anything else.  However, it
2305  * does impact behavior on some platforms, such as differentiating between
2306  * text and binary input/output on non-Unix platforms
2307  */
2308 BIO *dup_bio_in(int format)
2309 {
2310     return BIO_new_fp(stdin,
2311                       BIO_NOCLOSE | (FMT_istext(format) ? BIO_FP_TEXT : 0));
2312 }
2313
2314 BIO *dup_bio_out(int format)
2315 {
2316     BIO *b = BIO_new_fp(stdout,
2317                         BIO_NOCLOSE | (FMT_istext(format) ? BIO_FP_TEXT : 0));
2318     void *prefix = NULL;
2319
2320 #ifdef OPENSSL_SYS_VMS
2321     if (FMT_istext(format))
2322         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2323 #endif
2324
2325     if (FMT_istext(format)
2326         && (prefix = getenv("HARNESS_OSSL_PREFIX")) != NULL) {
2327         b = BIO_push(BIO_new(apps_bf_prefix()), b);
2328         BIO_ctrl(b, PREFIX_CTRL_SET_PREFIX, 0, prefix);
2329     }
2330
2331     return b;
2332 }
2333
2334 BIO *dup_bio_err(int format)
2335 {
2336     BIO *b = BIO_new_fp(stderr,
2337                         BIO_NOCLOSE | (FMT_istext(format) ? BIO_FP_TEXT : 0));
2338 #ifdef OPENSSL_SYS_VMS
2339     if (FMT_istext(format))
2340         b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2341 #endif
2342     return b;
2343 }
2344
2345 /*
2346  * Because the prefix method is created dynamically, we must also be able
2347  * to destroy it.
2348  */
2349 void destroy_prefix_method(void)
2350 {
2351     BIO_METHOD *prefix_method = apps_bf_prefix();
2352     BIO_meth_free(prefix_method);
2353     prefix_method = NULL;
2354 }
2355
2356 void unbuffer(FILE *fp)
2357 {
2358 /*
2359  * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2360  * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2361  * However, we trust that the C RTL will never give us a FILE pointer
2362  * above the first 4 GB of memory, so we simply turn off the warning
2363  * temporarily.
2364  */
2365 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2366 # pragma environment save
2367 # pragma message disable maylosedata2
2368 #endif
2369     setbuf(fp, NULL);
2370 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2371 # pragma environment restore
2372 #endif
2373 }
2374
2375 static const char *modestr(char mode, int format)
2376 {
2377     OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2378
2379     switch (mode) {
2380     case 'a':
2381         return FMT_istext(format) ? "a" : "ab";
2382     case 'r':
2383         return FMT_istext(format) ? "r" : "rb";
2384     case 'w':
2385         return FMT_istext(format) ? "w" : "wb";
2386     }
2387     /* The assert above should make sure we never reach this point */
2388     return NULL;
2389 }
2390
2391 static const char *modeverb(char mode)
2392 {
2393     switch (mode) {
2394     case 'a':
2395         return "appending";
2396     case 'r':
2397         return "reading";
2398     case 'w':
2399         return "writing";
2400     }
2401     return "(doing something)";
2402 }
2403
2404 /*
2405  * Open a file for writing, owner-read-only.
2406  */
2407 BIO *bio_open_owner(const char *filename, int format, int private)
2408 {
2409     FILE *fp = NULL;
2410     BIO *b = NULL;
2411     int fd = -1, bflags, mode, textmode;
2412
2413     if (!private || filename == NULL || strcmp(filename, "-") == 0)
2414         return bio_open_default(filename, 'w', format);
2415
2416     mode = O_WRONLY;
2417 #ifdef O_CREAT
2418     mode |= O_CREAT;
2419 #endif
2420 #ifdef O_TRUNC
2421     mode |= O_TRUNC;
2422 #endif
2423     textmode = FMT_istext(format);
2424     if (!textmode) {
2425 #ifdef O_BINARY
2426         mode |= O_BINARY;
2427 #elif defined(_O_BINARY)
2428         mode |= _O_BINARY;
2429 #endif
2430     }
2431
2432 #ifdef OPENSSL_SYS_VMS
2433     /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2434      * it still needs to know that we're going binary, or fdopen()
2435      * will fail with "invalid argument"...  so we tell VMS what the
2436      * context is.
2437      */
2438     if (!textmode)
2439         fd = open(filename, mode, 0600, "ctx=bin");
2440     else
2441 #endif
2442         fd = open(filename, mode, 0600);
2443     if (fd < 0)
2444         goto err;
2445     fp = fdopen(fd, modestr('w', format));
2446     if (fp == NULL)
2447         goto err;
2448     bflags = BIO_CLOSE;
2449     if (textmode)
2450         bflags |= BIO_FP_TEXT;
2451     b = BIO_new_fp(fp, bflags);
2452     if (b)
2453         return b;
2454
2455  err:
2456     BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2457                opt_getprog(), filename, strerror(errno));
2458     ERR_print_errors(bio_err);
2459     /* If we have fp, then fdopen took over fd, so don't close both. */
2460     if (fp)
2461         fclose(fp);
2462     else if (fd >= 0)
2463         close(fd);
2464     return NULL;
2465 }
2466
2467 static BIO *bio_open_default_(const char *filename, char mode, int format,
2468                               int quiet)
2469 {
2470     BIO *ret;
2471
2472     if (filename == NULL || strcmp(filename, "-") == 0) {
2473         ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2474         if (quiet) {
2475             ERR_clear_error();
2476             return ret;
2477         }
2478         if (ret != NULL)
2479             return ret;
2480         BIO_printf(bio_err,
2481                    "Can't open %s, %s\n",
2482                    mode == 'r' ? "stdin" : "stdout", strerror(errno));
2483     } else {
2484         ret = BIO_new_file(filename, modestr(mode, format));
2485         if (quiet) {
2486             ERR_clear_error();
2487             return ret;
2488         }
2489         if (ret != NULL)
2490             return ret;
2491         BIO_printf(bio_err,
2492                    "Can't open %s for %s, %s\n",
2493                    filename, modeverb(mode), strerror(errno));
2494     }
2495     ERR_print_errors(bio_err);
2496     return NULL;
2497 }
2498
2499 BIO *bio_open_default(const char *filename, char mode, int format)
2500 {
2501     return bio_open_default_(filename, mode, format, 0);
2502 }
2503
2504 BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2505 {
2506     return bio_open_default_(filename, mode, format, 1);
2507 }
2508
2509 void wait_for_async(SSL *s)
2510 {
2511     /* On Windows select only works for sockets, so we simply don't wait  */
2512 #ifndef OPENSSL_SYS_WINDOWS
2513     int width = 0;
2514     fd_set asyncfds;
2515     OSSL_ASYNC_FD *fds;
2516     size_t numfds;
2517     size_t i;
2518
2519     if (!SSL_get_all_async_fds(s, NULL, &numfds))
2520         return;
2521     if (numfds == 0)
2522         return;
2523     fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2524     if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2525         OPENSSL_free(fds);
2526         return;
2527     }
2528
2529     FD_ZERO(&asyncfds);
2530     for (i = 0; i < numfds; i++) {
2531         if (width <= (int)fds[i])
2532             width = (int)fds[i] + 1;
2533         openssl_fdset((int)fds[i], &asyncfds);
2534     }
2535     select(width, (void *)&asyncfds, NULL, NULL, NULL);
2536     OPENSSL_free(fds);
2537 #endif
2538 }
2539
2540 /* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2541 #if defined(OPENSSL_SYS_MSDOS)
2542 int has_stdin_waiting(void)
2543 {
2544 # if defined(OPENSSL_SYS_WINDOWS)
2545     HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2546     DWORD events = 0;
2547     INPUT_RECORD inputrec;
2548     DWORD insize = 1;
2549     BOOL peeked;
2550
2551     if (inhand == INVALID_HANDLE_VALUE) {
2552         return 0;
2553     }
2554
2555     peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2556     if (!peeked) {
2557         /* Probably redirected input? _kbhit() does not work in this case */
2558         if (!feof(stdin)) {
2559             return 1;
2560         }
2561         return 0;
2562     }
2563 # endif
2564     return _kbhit();
2565 }
2566 #endif
2567
2568 /* Corrupt a signature by modifying final byte */
2569 void corrupt_signature(const ASN1_STRING *signature)
2570 {
2571         unsigned char *s = signature->data;
2572         s[signature->length - 1] ^= 0x1;
2573 }
2574
2575 int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2576                    int days)
2577 {
2578     if (startdate == NULL || strcmp(startdate, "today") == 0) {
2579         if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2580             return 0;
2581     } else {
2582         if (!ASN1_TIME_set_string_X509(X509_getm_notBefore(x), startdate))
2583             return 0;
2584     }
2585     if (enddate == NULL) {
2586         if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2587             == NULL)
2588             return 0;
2589     } else if (!ASN1_TIME_set_string_X509(X509_getm_notAfter(x), enddate)) {
2590         return 0;
2591     }
2592     return 1;
2593 }
2594
2595 void make_uppercase(char *string)
2596 {
2597     int i;
2598
2599     for (i = 0; string[i] != '\0'; i++)
2600         string[i] = toupper((unsigned char)string[i]);
2601 }
2602
2603 int opt_printf_stderr(const char *fmt, ...)
2604 {
2605     va_list ap;
2606     int ret;
2607
2608     va_start(ap, fmt);
2609     ret = BIO_vprintf(bio_err, fmt, ap);
2610     va_end(ap);
2611     return ret;
2612 }
2613
2614 OSSL_PARAM *app_params_new_from_opts(STACK_OF(OPENSSL_STRING) *opts,
2615                                      const OSSL_PARAM *paramdefs)
2616 {
2617     OSSL_PARAM *params = NULL;
2618     size_t sz = (size_t)sk_OPENSSL_STRING_num(opts);
2619     size_t params_n;
2620     char *opt = "", *stmp, *vtmp = NULL;
2621
2622     if (opts == NULL)
2623         return NULL;
2624
2625     params = OPENSSL_zalloc(sizeof(OSSL_PARAM) * (sz + 1));
2626     if (params == NULL)
2627         return NULL;
2628
2629     for (params_n = 0; params_n < sz; params_n++) {
2630         opt = sk_OPENSSL_STRING_value(opts, (int)params_n);
2631         if ((stmp = OPENSSL_strdup(opt)) == NULL
2632             || (vtmp = strchr(stmp, ':')) == NULL)
2633             goto err;
2634         /* Replace ':' with 0 to terminate the string pointed to by stmp */
2635         *vtmp = 0;
2636         /* Skip over the separator so that vmtp points to the value */
2637         vtmp++;
2638         if (!OSSL_PARAM_allocate_from_text(&params[params_n], paramdefs,
2639                                            stmp, vtmp, strlen(vtmp)))
2640             goto err;
2641         OPENSSL_free(stmp);
2642     }
2643     params[params_n] = OSSL_PARAM_construct_end();
2644     return params;
2645 err:
2646     OPENSSL_free(stmp);
2647     BIO_printf(bio_err, "Parameter error '%s'\n", opt);
2648     ERR_print_errors(bio_err);
2649     app_params_free(params);
2650     return NULL;
2651 }
2652
2653 void app_params_free(OSSL_PARAM *params)
2654 {
2655     int i;
2656
2657     if (params != NULL) {
2658         for (i = 0; params[i].key != NULL; ++i)
2659             OPENSSL_free(params[i].data);
2660         OPENSSL_free(params);
2661     }
2662 }