apps/apps.c

   1 /* apps/apps.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #define NON_MAIN
  65 #include "apps.h"
  66 #undef NON_MAIN
  67 #include <openssl/err.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/x509v3.h>
  70 #include <openssl/pem.h>
  71 #include <openssl/pkcs12.h>
  72 #include <openssl/ui.h>
  73 #include <openssl/safestack.h>
  74 #include <openssl/engine.h>
  75
  76 #ifdef OPENSSL_SYS_WINDOWS
  77 #define strcasecmp _stricmp
  78 #else
  79 #include <strings.h>
  80 #endif
  81
  82 #ifdef OPENSSL_SYS_WINDOWS
  83 #  include "bss_file.c"
  84 #endif
  85
  86 typedef struct {
  87         char *name;
  88         unsigned long flag;
  89         unsigned long mask;
  90 } NAME_EX_TBL;
  91
  92 static UI_METHOD *ui_method = NULL;
  93
  94 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
  95 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
  96
  97 int app_init(long mesgwin);
  98 #ifdef undef /* never finished - probably never will be :-) */
  99 int args_from_file(char *file, int *argc, char **argv[])
 100         {
 101         FILE *fp;
 102         int num,i;
 103         unsigned int len;
 104         static char *buf=NULL;
 105         static char **arg=NULL;
 106         char *p;
 107         struct stat stbuf;
 108
 109         if (stat(file,&stbuf) < 0) return(0);
 110
 111         fp=fopen(file,"r");
 112         if (fp == NULL)
 113                 return(0);
 114
 115         *argc=0;
 116         *argv=NULL;
 117
 118         len=(unsigned int)stbuf.st_size;
 119         if (buf != NULL) OPENSSL_free(buf);
 120         buf=(char *)OPENSSL_malloc(len+1);
 121         if (buf == NULL) return(0);
 122
 123         len=fread(buf,1,len,fp);
 124         if (len <= 1) return(0);
 125         buf[len]='\0';
 126
 127         i=0;
 128         for (p=buf; *p; p++)
 129                 if (*p == '\n') i++;
 130         if (arg != NULL) OPENSSL_free(arg);
 131         arg=(char **)OPENSSL_malloc(sizeof(char *)*(i*2));
 132
 133         *argv=arg;
 134         num=0;
 135         p=buf;
 136         for (;;)
 137                 {
 138                 if (!*p) break;
 139                 if (*p == '#') /* comment line */
 140                         {
 141                         while (*p && (*p != '\n')) p++;
 142                         continue;
 143                         }
 144                 /* else we have a line */
 145                 *(arg++)=p;
 146                 num++;
 147                 while (*p && ((*p != ' ') && (*p != '\t') && (*p != '\n')))
 148                         p++;
 149                 if (!*p) break;
 150                 if (*p == '\n')
 151                         {
 152                         *(p++)='\0';
 153                         continue;
 154                         }
 155                 /* else it is a tab or space */
 156                 p++;
 157                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
 158                         p++;
 159                 if (!*p) break;
 160                 if (*p == '\n')
 161                         {
 162                         p++;
 163                         continue;
 164                         }
 165                 *(arg++)=p++;
 166                 num++;
 167                 while (*p && (*p != '\n')) p++;
 168                 if (!*p) break;
 169                 /* else *p == '\n' */
 170                 *(p++)='\0';
 171                 }
 172         *argc=num;
 173         return(1);
 174         }
 175 #endif
 176
 177 int str2fmt(char *s)
 178         {
 179         if      ((*s == 'D') || (*s == 'd'))
 180                 return(FORMAT_ASN1);
 181         else if ((*s == 'T') || (*s == 't'))
 182                 return(FORMAT_TEXT);
 183         else if ((*s == 'P') || (*s == 'p'))
 184                 return(FORMAT_PEM);
 185         else if ((*s == 'N') || (*s == 'n'))
 186                 return(FORMAT_NETSCAPE);
 187         else if ((*s == 'S') || (*s == 's'))
 188                 return(FORMAT_SMIME);
 189         else if ((*s == '1')
 190                 || (strcmp(s,"PKCS12") == 0) || (strcmp(s,"pkcs12") == 0)
 191                 || (strcmp(s,"P12") == 0) || (strcmp(s,"p12") == 0))
 192                 return(FORMAT_PKCS12);
 193         else if ((*s == 'E') || (*s == 'e'))
 194                 return(FORMAT_ENGINE);
 195         else
 196                 return(FORMAT_UNDEF);
 197         }
 198
 199 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 200 void program_name(char *in, char *out, int size)
 201         {
 202         int i,n;
 203         char *p=NULL;
 204
 205         n=strlen(in);
 206         /* find the last '/', '\' or ':' */
 207         for (i=n-1; i>0; i--)
 208                 {
 209                 if ((in[i] == '/') || (in[i] == '\\') || (in[i] == ':'))
 210                         {
 211                         p= &(in[i+1]);
 212                         break;
 213                         }
 214                 }
 215         if (p == NULL)
 216                 p=in;
 217         n=strlen(p);
 218         /* strip off trailing .exe if present. */
 219         if ((n > 4) && (p[n-4] == '.') &&
 220                 ((p[n-3] == 'e') || (p[n-3] == 'E')) &&
 221                 ((p[n-2] == 'x') || (p[n-2] == 'X')) &&
 222                 ((p[n-1] == 'e') || (p[n-1] == 'E')))
 223                 n-=4;
 224         if (n > size-1)
 225                 n=size-1;
 226
 227         for (i=0; i<n; i++)
 228                 {
 229                 if ((p[i] >= 'A') && (p[i] <= 'Z'))
 230                         out[i]=p[i]-'A'+'a';
 231                 else
 232                         out[i]=p[i];
 233                 }
 234         out[n]='\0';
 235         }
 236 #else
 237 #ifdef OPENSSL_SYS_VMS
 238 void program_name(char *in, char *out, int size)
 239         {
 240         char *p=in, *q;
 241         char *chars=":]>";
 242
 243         while(*chars != '\0')
 244                 {
 245                 q=strrchr(p,*chars);
 246                 if (q > p)
 247                         p = q + 1;
 248                 chars++;
 249                 }
 250
 251         q=strrchr(p,'.');
 252         if (q == NULL)
 253                 q = in+size;
 254         strncpy(out,p,q-p);
 255         out[q-p]='\0';
 256         }
 257 #else
 258 void program_name(char *in, char *out, int size)
 259         {
 260         char *p;
 261
 262         p=strrchr(in,'/');
 263         if (p != NULL)
 264                 p++;
 265         else
 266                 p=in;
 267         strncpy(out,p,size-1);
 268         out[size-1]='\0';
 269         }
 270 #endif
 271 #endif
 272
 273 #ifdef OPENSSL_SYS_WIN32
 274 int WIN32_rename(char *from, char *to)
 275         {
 276 #ifdef OPENSSL_SYS_WINNT
 277         int ret;
 278 /* Note: MoveFileEx() doesn't work under Win95, Win98 */
 279
 280         ret=MoveFileEx(from,to,MOVEFILE_REPLACE_EXISTING|MOVEFILE_COPY_ALLOWED);
 281         return(ret?0:-1);
 282 #else
 283         unlink(to);
 284         return MoveFile(from, to);
 285 #endif
 286         }
 287 #endif
 288
 289 int chopup_args(ARGS *arg, char *buf, int *argc, char **argv[])
 290         {
 291         int num,len,i;
 292         char *p;
 293
 294         *argc=0;
 295         *argv=NULL;
 296
 297         len=strlen(buf);
 298         i=0;
 299         if (arg->count == 0)
 300                 {
 301                 arg->count=20;
 302                 arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);
 303                 }
 304         for (i=0; i<arg->count; i++)
 305                 arg->data[i]=NULL;
 306
 307         num=0;
 308         p=buf;
 309         for (;;)
 310                 {
 311                 /* first scan over white space */
 312                 if (!*p) break;
 313                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
 314                         p++;
 315                 if (!*p) break;
 316
 317                 /* The start of something good :-) */
 318                 if (num >= arg->count)
 319                         {
 320                         arg->count+=20;
 321                         arg->data=(char **)OPENSSL_realloc(arg->data,
 322                                 sizeof(char *)*arg->count);
 323                         if (argc == 0) return(0);
 324                         }
 325                 arg->data[num++]=p;
 326
 327                 /* now look for the end of this */
 328                 if ((*p == '\'') || (*p == '\"')) /* scan for closing quote */
 329                         {
 330                         i= *(p++);
 331                         arg->data[num-1]++; /* jump over quote */
 332                         while (*p && (*p != i))
 333                                 p++;
 334                         *p='\0';
 335                         }
 336                 else
 337                         {
 338                         while (*p && ((*p != ' ') &&
 339                                 (*p != '\t') && (*p != '\n')))
 340                                 p++;
 341
 342                         if (*p == '\0')
 343                                 p--;
 344                         else
 345                                 *p='\0';
 346                         }
 347                 p++;
 348                 }
 349         *argc=num;
 350         *argv=arg->data;
 351         return(1);
 352         }
 353
 354 #ifndef APP_INIT
 355 int app_init(long mesgwin)
 356         {
 357         return(1);
 358         }
 359 #endif
 360
 361
 362 int dump_cert_text (BIO *out, X509 *x)
 363 {
 364         char buf[256];
 365         X509_NAME_oneline(X509_get_subject_name(x),buf,256);
 366         BIO_puts(out,"subject=");
 367         BIO_puts(out,buf);
 368
 369         X509_NAME_oneline(X509_get_issuer_name(x),buf,256);
 370         BIO_puts(out,"\nissuer= ");
 371         BIO_puts(out,buf);
 372         BIO_puts(out,"\n");
 373         return 0;
 374 }
 375
 376 static int ui_open(UI *ui)
 377         {
 378         return UI_method_get_opener(UI_OpenSSL())(ui);
 379         }
 380 static int ui_read(UI *ui, UI_STRING *uis)
 381         {
 382         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 383                 && UI_get0_user_data(ui))
 384                 {
 385                 switch(UI_get_string_type(uis))
 386                         {
 387                 case UIT_PROMPT:
 388                 case UIT_VERIFY:
 389                         {
 390                         const char *password =
 391                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 392                         if (password[0] != '\0')
 393                                 {
 394                                 UI_set_result(ui, uis, password);
 395                                 return 1;
 396                                 }
 397                         }
 398                 default:
 399                         break;
 400                         }
 401                 }
 402         return UI_method_get_reader(UI_OpenSSL())(ui, uis);
 403         }
 404 static int ui_write(UI *ui, UI_STRING *uis)
 405         {
 406         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
 407                 && UI_get0_user_data(ui))
 408                 {
 409                 switch(UI_get_string_type(uis))
 410                         {
 411                 case UIT_PROMPT:
 412                 case UIT_VERIFY:
 413                         {
 414                         const char *password =
 415                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
 416                         if (password[0] != '\0')
 417                                 return 1;
 418                         }
 419                 default:
 420                         break;
 421                         }
 422                 }
 423         return UI_method_get_writer(UI_OpenSSL())(ui, uis);
 424         }
 425 static int ui_close(UI *ui)
 426         {
 427         return UI_method_get_closer(UI_OpenSSL())(ui);
 428         }
 429 int setup_ui_method()
 430         {
 431         ui_method = UI_create_method("OpenSSL application user interface");
 432         UI_method_set_opener(ui_method, ui_open);
 433         UI_method_set_reader(ui_method, ui_read);
 434         UI_method_set_writer(ui_method, ui_write);
 435         UI_method_set_closer(ui_method, ui_close);
 436         return 0;
 437         }
 438 void destroy_ui_method()
 439         {
 440         if(ui_method)
 441                 {
 442                 UI_destroy_method(ui_method);
 443                 ui_method = NULL;
 444                 }
 445         }
 446 int password_callback(char *buf, int bufsiz, int verify,
 447         PW_CB_DATA *cb_tmp)
 448         {
 449         UI *ui = NULL;
 450         int res = 0;
 451         const char *prompt_info = NULL;
 452         const char *password = NULL;
 453         PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
 454
 455         if (cb_data)
 456                 {
 457                 if (cb_data->password)
 458                         password = cb_data->password;
 459                 if (cb_data->prompt_info)
 460                         prompt_info = cb_data->prompt_info;
 461                 }
 462
 463         if (password)
 464                 {
 465                 res = strlen(password);
 466                 if (res > bufsiz)
 467                         res = bufsiz;
 468                 memcpy(buf, password, res);
 469                 return res;
 470                 }
 471
 472         ui = UI_new_method(ui_method);
 473         if (ui)
 474                 {
 475                 int ok = 0;
 476                 char *buff = NULL;
 477                 int ui_flags = 0;
 478                 char *prompt = NULL;
 479
 480                 prompt = UI_construct_prompt(ui, "pass phrase",
 481                         cb_data->prompt_info);
 482
 483                 ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
 484                 UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
 485
 486                 if (ok >= 0)
 487                         ok = UI_add_input_string(ui,prompt,ui_flags,buf,
 488                                 PW_MIN_LENGTH,BUFSIZ-1);
 489                 if (ok >= 0 && verify)
 490                         {
 491                         buff = (char *)OPENSSL_malloc(bufsiz);
 492                         ok = UI_add_verify_string(ui,prompt,ui_flags,buff,
 493                                 PW_MIN_LENGTH,BUFSIZ-1, buf);
 494                         }
 495                 if (ok >= 0)
 496                         do
 497                                 {
 498                                 ok = UI_process(ui);
 499                                 }
 500                         while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
 501
 502                 if (buff)
 503                         {
 504                         memset(buff,0,(unsigned int)bufsiz);
 505                         OPENSSL_free(buff);
 506                         }
 507
 508                 if (ok >= 0)
 509                         res = strlen(buf);
 510                 if (ok == -1)
 511                         {
 512                         BIO_printf(bio_err, "User interface error\n");
 513                         ERR_print_errors(bio_err);
 514                         memset(buf,0,(unsigned int)bufsiz);
 515                         res = 0;
 516                         }
 517                 if (ok == -2)
 518                         {
 519                         BIO_printf(bio_err,"aborted!\n");
 520                         memset(buf,0,(unsigned int)bufsiz);
 521                         res = 0;
 522                         }
 523                 UI_free(ui);
 524                 OPENSSL_free(prompt);
 525                 }
 526         return res;
 527         }
 528
 529 static char *app_get_pass(BIO *err, char *arg, int keepbio);
 530
 531 int app_passwd(BIO *err, char *arg1, char *arg2, char **pass1, char **pass2)
 532 {
 533         int same;
 534         if(!arg2 || !arg1 || strcmp(arg1, arg2)) same = 0;
 535         else same = 1;
 536         if(arg1) {
 537                 *pass1 = app_get_pass(err, arg1, same);
 538                 if(!*pass1) return 0;
 539         } else if(pass1) *pass1 = NULL;
 540         if(arg2) {
 541                 *pass2 = app_get_pass(err, arg2, same ? 2 : 0);
 542                 if(!*pass2) return 0;
 543         } else if(pass2) *pass2 = NULL;
 544         return 1;
 545 }
 546
 547 static char *app_get_pass(BIO *err, char *arg, int keepbio)
 548 {
 549         char *tmp, tpass[APP_PASS_LEN];
 550         static BIO *pwdbio = NULL;
 551         int i;
 552         if(!strncmp(arg, "pass:", 5)) return BUF_strdup(arg + 5);
 553         if(!strncmp(arg, "env:", 4)) {
 554                 tmp = getenv(arg + 4);
 555                 if(!tmp) {
 556                         BIO_printf(err, "Can't read environment variable %s\n", arg + 4);
 557                         return NULL;
 558                 }
 559                 return BUF_strdup(tmp);
 560         }
 561         if(!keepbio || !pwdbio) {
 562                 if(!strncmp(arg, "file:", 5)) {
 563                         pwdbio = BIO_new_file(arg + 5, "r");
 564                         if(!pwdbio) {
 565                                 BIO_printf(err, "Can't open file %s\n", arg + 5);
 566                                 return NULL;
 567                         }
 568                 } else if(!strncmp(arg, "fd:", 3)) {
 569                         BIO *btmp;
 570                         i = atoi(arg + 3);
 571                         if(i >= 0) pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
 572                         if((i < 0) || !pwdbio) {
 573                                 BIO_printf(err, "Can't access file descriptor %s\n", arg + 3);
 574                                 return NULL;
 575                         }
 576                         /* Can't do BIO_gets on an fd BIO so add a buffering BIO */
 577                         btmp = BIO_new(BIO_f_buffer());
 578                         pwdbio = BIO_push(btmp, pwdbio);
 579                 } else if(!strcmp(arg, "stdin")) {
 580                         pwdbio = BIO_new_fp(stdin, BIO_NOCLOSE);
 581                         if(!pwdbio) {
 582                                 BIO_printf(err, "Can't open BIO for stdin\n");
 583                                 return NULL;
 584                         }
 585                 } else {
 586                         BIO_printf(err, "Invalid password argument \"%s\"\n", arg);
 587                         return NULL;
 588                 }
 589         }
 590         i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
 591         if(keepbio != 1) {
 592                 BIO_free_all(pwdbio);
 593                 pwdbio = NULL;
 594         }
 595         if(i <= 0) {
 596                 BIO_printf(err, "Error reading password from BIO\n");
 597                 return NULL;
 598         }
 599         tmp = strchr(tpass, '\n');
 600         if(tmp) *tmp = 0;
 601         return BUF_strdup(tpass);
 602 }
 603
 604 int add_oid_section(BIO *err, CONF *conf)
 605 {
 606         char *p;
 607         STACK_OF(CONF_VALUE) *sktmp;
 608         CONF_VALUE *cnf;
 609         int i;
 610         if(!(p=NCONF_get_string(conf,NULL,"oid_section")))
 611                 {
 612                 ERR_clear_error();
 613                 return 1;
 614                 }
 615         if(!(sktmp = NCONF_get_section(conf, p))) {
 616                 BIO_printf(err, "problem loading oid section %s\n", p);
 617                 return 0;
 618         }
 619         for(i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
 620                 cnf = sk_CONF_VALUE_value(sktmp, i);
 621                 if(OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
 622                         BIO_printf(err, "problem creating object %s=%s\n",
 623                                                          cnf->name, cnf->value);
 624                         return 0;
 625                 }
 626         }
 627         return 1;
 628 }
 629
 630 X509 *load_cert(BIO *err, const char *file, int format,
 631         const char *pass, ENGINE *e, const char *cert_descrip)
 632         {
 633         ASN1_HEADER *ah=NULL;
 634         BUF_MEM *buf=NULL;
 635         X509 *x=NULL;
 636         BIO *cert;
 637
 638         if ((cert=BIO_new(BIO_s_file())) == NULL)
 639                 {
 640                 ERR_print_errors(err);
 641                 goto end;
 642                 }
 643
 644         if (file == NULL)
 645                 {
 646                 setvbuf(stdin, NULL, _IONBF, 0);
 647                 BIO_set_fp(cert,stdin,BIO_NOCLOSE);
 648                 }
 649         else
 650                 {
 651                 if (BIO_read_filename(cert,file) <= 0)
 652                         {
 653                         BIO_printf(err, "Error opening %s %s\n",
 654                                 cert_descrip, file);
 655                         ERR_print_errors(err);
 656                         goto end;
 657                         }
 658                 }
 659
 660         if      (format == FORMAT_ASN1)
 661                 x=d2i_X509_bio(cert,NULL);
 662         else if (format == FORMAT_NETSCAPE)
 663                 {
 664                 unsigned char *p,*op;
 665                 int size=0,i;
 666
 667                 /* We sort of have to do it this way because it is sort of nice
 668                  * to read the header first and check it, then
 669                  * try to read the certificate */
 670                 buf=BUF_MEM_new();
 671                 for (;;)
 672                         {
 673                         if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))
 674                                 goto end;
 675                         i=BIO_read(cert,&(buf->data[size]),1024*10);
 676                         size+=i;
 677                         if (i == 0) break;
 678                         if (i < 0)
 679                                 {
 680                                 perror("reading certificate");
 681                                 goto end;
 682                                 }
 683                         }
 684                 p=(unsigned char *)buf->data;
 685                 op=p;
 686
 687                 /* First load the header */
 688                 if ((ah=d2i_ASN1_HEADER(NULL,&p,(long)size)) == NULL)
 689                         goto end;
 690                 if ((ah->header == NULL) || (ah->header->data == NULL) ||
 691                         (strncmp(NETSCAPE_CERT_HDR,(char *)ah->header->data,
 692                         ah->header->length) != 0))
 693                         {
 694                         BIO_printf(err,"Error reading header on certificate\n");
 695                         goto end;
 696                         }
 697                 /* header is ok, so now read the object */
 698                 p=op;
 699                 ah->meth=X509_asn1_meth();
 700                 if ((ah=d2i_ASN1_HEADER(&ah,&p,(long)size)) == NULL)
 701                         goto end;
 702                 x=(X509 *)ah->data;
 703                 ah->data=NULL;
 704                 }
 705         else if (format == FORMAT_PEM)
 706                 x=PEM_read_bio_X509_AUX(cert,NULL,
 707                         (pem_password_cb *)password_callback, NULL);
 708         else if (format == FORMAT_PKCS12)
 709                 {
 710                 PKCS12 *p12 = d2i_PKCS12_bio(cert, NULL);
 711
 712                 PKCS12_parse(p12, NULL, NULL, &x, NULL);
 713                 PKCS12_free(p12);
 714                 p12 = NULL;
 715                 }
 716         else    {
 717                 BIO_printf(err,"bad input format specified for %s\n",
 718                         cert_descrip);
 719                 goto end;
 720                 }
 721 end:
 722         if (x == NULL)
 723                 {
 724                 BIO_printf(err,"unable to load certificate\n");
 725                 ERR_print_errors(err);
 726                 }
 727         if (ah != NULL) ASN1_HEADER_free(ah);
 728         if (cert != NULL) BIO_free(cert);
 729         if (buf != NULL) BUF_MEM_free(buf);
 730         return(x);
 731         }
 732
 733 EVP_PKEY *load_key(BIO *err, const char *file, int format,
 734         const char *pass, ENGINE *e, const char *key_descrip)
 735         {
 736         BIO *key=NULL;
 737         EVP_PKEY *pkey=NULL;
 738         PW_CB_DATA cb_data;
 739
 740         cb_data.password = pass;
 741         cb_data.prompt_info = file;
 742
 743         if (file == NULL)
 744                 {
 745                 BIO_printf(err,"no keyfile specified\n");
 746                 goto end;
 747                 }
 748         if (format == FORMAT_ENGINE)
 749                 {
 750                 if (!e)
 751                         BIO_printf(bio_err,"no engine specified\n");
 752                 else
 753                         pkey = ENGINE_load_private_key(e, file,
 754                                 ui_method, &cb_data);
 755                 goto end;
 756                 }
 757         key=BIO_new(BIO_s_file());
 758         if (key == NULL)
 759                 {
 760                 ERR_print_errors(err);
 761                 goto end;
 762                 }
 763         if (BIO_read_filename(key,file) <= 0)
 764                 {
 765                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
 766                 ERR_print_errors(err);
 767                 goto end;
 768                 }
 769         if (format == FORMAT_ASN1)
 770                 {
 771                 pkey=d2i_PrivateKey_bio(key, NULL);
 772                 }
 773         else if (format == FORMAT_PEM)
 774                 {
 775                 pkey=PEM_read_bio_PrivateKey(key,NULL,
 776                         (pem_password_cb *)password_callback, &cb_data);
 777                 }
 778         else if (format == FORMAT_PKCS12)
 779                 {
 780                 PKCS12 *p12 = d2i_PKCS12_bio(key, NULL);
 781
 782                 PKCS12_parse(p12, pass, &pkey, NULL, NULL);
 783                 PKCS12_free(p12);
 784                 p12 = NULL;
 785                 }
 786         else
 787                 {
 788                 BIO_printf(err,"bad input format specified for key file\n");
 789                 goto end;
 790                 }
 791  end:
 792         if (key != NULL) BIO_free(key);
 793         if (pkey == NULL)
 794                 BIO_printf(err,"unable to load %s\n", key_descrip);
 795         return(pkey);
 796         }
 797
 798 EVP_PKEY *load_pubkey(BIO *err, const char *file, int format,
 799         const char *pass, ENGINE *e, const char *key_descrip)
 800         {
 801         BIO *key=NULL;
 802         EVP_PKEY *pkey=NULL;
 803         PW_CB_DATA cb_data;
 804
 805         cb_data.password = pass;
 806         cb_data.prompt_info = file;
 807
 808         if (file == NULL)
 809                 {
 810                 BIO_printf(err,"no keyfile specified\n");
 811                 goto end;
 812                 }
 813         if (format == FORMAT_ENGINE)
 814                 {
 815                 if (!e)
 816                         BIO_printf(bio_err,"no engine specified\n");
 817                 else
 818                         pkey = ENGINE_load_public_key(e, file,
 819                                 ui_method, &cb_data);
 820                 goto end;
 821                 }
 822         key=BIO_new(BIO_s_file());
 823         if (key == NULL)
 824                 {
 825                 ERR_print_errors(err);
 826                 goto end;
 827                 }
 828         if (BIO_read_filename(key,file) <= 0)
 829                 {
 830                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
 831                 ERR_print_errors(err);
 832                 goto end;
 833                 }
 834         if (format == FORMAT_ASN1)
 835                 {
 836                 pkey=d2i_PUBKEY_bio(key, NULL);
 837                 }
 838         else if (format == FORMAT_PEM)
 839                 {
 840                 pkey=PEM_read_bio_PUBKEY(key,NULL,
 841                         (pem_password_cb *)password_callback, &cb_data);
 842                 }
 843         else
 844                 {
 845                 BIO_printf(err,"bad input format specified for key file\n");
 846                 goto end;
 847                 }
 848  end:
 849         if (key != NULL) BIO_free(key);
 850         if (pkey == NULL)
 851                 BIO_printf(err,"unable to load %s\n", key_descrip);
 852         return(pkey);
 853         }
 854
 855 STACK_OF(X509) *load_certs(BIO *err, const char *file, int format,
 856         const char *pass, ENGINE *e, const char *cert_descrip)
 857         {
 858         BIO *certs;
 859         int i;
 860         STACK_OF(X509) *othercerts = NULL;
 861         STACK_OF(X509_INFO) *allcerts = NULL;
 862         X509_INFO *xi;
 863         PW_CB_DATA cb_data;
 864
 865         cb_data.password = pass;
 866         cb_data.prompt_info = file;
 867
 868         if((certs = BIO_new(BIO_s_file())) == NULL)
 869                 {
 870                 ERR_print_errors(err);
 871                 goto end;
 872                 }
 873
 874         if (file == NULL)
 875                 BIO_set_fp(certs,stdin,BIO_NOCLOSE);
 876         else
 877                 {
 878                 if (BIO_read_filename(certs,file) <= 0)
 879                         {
 880                         BIO_printf(err, "Error opening %s %s\n",
 881                                 cert_descrip, file);
 882                         ERR_print_errors(err);
 883                         goto end;
 884                         }
 885                 }
 886
 887         if      (format == FORMAT_PEM)
 888                 {
 889                 othercerts = sk_X509_new_null();
 890                 if(!othercerts)
 891                         {
 892                         sk_X509_free(othercerts);
 893                         othercerts = NULL;
 894                         goto end;
 895                         }
 896                 allcerts = PEM_X509_INFO_read_bio(certs, NULL,
 897                                 (pem_password_cb *)password_callback, &cb_data);
 898                 for(i = 0; i < sk_X509_INFO_num(allcerts); i++)
 899                         {
 900                         xi = sk_X509_INFO_value (allcerts, i);
 901                         if (xi->x509)
 902                                 {
 903                                 sk_X509_push(othercerts, xi->x509);
 904                                 xi->x509 = NULL;
 905                                 }
 906                         }
 907                 goto end;
 908                 }
 909         else    {
 910                 BIO_printf(err,"bad input format specified for %s\n",
 911                         cert_descrip);
 912                 goto end;
 913                 }
 914 end:
 915         if (othercerts == NULL)
 916                 {
 917                 BIO_printf(err,"unable to load certificates\n");
 918                 ERR_print_errors(err);
 919                 }
 920         if (allcerts) sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
 921         if (certs != NULL) BIO_free(certs);
 922         return(othercerts);
 923         }
 924
 925
 926 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
 927 /* Return error for unknown extensions */
 928 #define X509V3_EXT_DEFAULT              0
 929 /* Print error for unknown extensions */
 930 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
 931 /* ASN1 parse unknown extensions */
 932 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
 933 /* BIO_dump unknown extensions */
 934 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
 935
 936 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
 937                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
 938
 939 int set_cert_ex(unsigned long *flags, const char *arg)
 940 {
 941         static const NAME_EX_TBL cert_tbl[] = {
 942                 { "compatible", X509_FLAG_COMPAT, 0xffffffffl},
 943                 { "ca_default", X509_FLAG_CA, 0xffffffffl},
 944                 { "no_header", X509_FLAG_NO_HEADER, 0},
 945                 { "no_version", X509_FLAG_NO_VERSION, 0},
 946                 { "no_serial", X509_FLAG_NO_SERIAL, 0},
 947                 { "no_signame", X509_FLAG_NO_SIGNAME, 0},
 948                 { "no_validity", X509_FLAG_NO_VALIDITY, 0},
 949                 { "no_subject", X509_FLAG_NO_SUBJECT, 0},
 950                 { "no_issuer", X509_FLAG_NO_ISSUER, 0},
 951                 { "no_pubkey", X509_FLAG_NO_PUBKEY, 0},
 952                 { "no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
 953                 { "no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
 954                 { "no_aux", X509_FLAG_NO_AUX, 0},
 955                 { "ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
 956                 { "ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 957                 { "ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 958                 { "ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
 959                 { NULL, 0, 0}
 960         };
 961         return set_multi_opts(flags, arg, cert_tbl);
 962 }
 963
 964 int set_name_ex(unsigned long *flags, const char *arg)
 965 {
 966         static const NAME_EX_TBL ex_tbl[] = {
 967                 { "esc_2253", ASN1_STRFLGS_ESC_2253, 0},
 968                 { "esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
 969                 { "esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
 970                 { "use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
 971                 { "utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
 972                 { "ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
 973                 { "show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
 974                 { "dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
 975                 { "dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
 976                 { "dump_der", ASN1_STRFLGS_DUMP_DER, 0},
 977                 { "compat", XN_FLAG_COMPAT, 0xffffffffL},
 978                 { "sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
 979                 { "sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
 980                 { "sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
 981                 { "sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
 982                 { "dn_rev", XN_FLAG_DN_REV, 0},
 983                 { "nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
 984                 { "sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
 985                 { "lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
 986                 { "align", XN_FLAG_FN_ALIGN, 0},
 987                 { "oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
 988                 { "space_eq", XN_FLAG_SPC_EQ, 0},
 989                 { "dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
 990                 { "RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
 991                 { "oneline", XN_FLAG_ONELINE, 0xffffffffL},
 992                 { "multiline", XN_FLAG_MULTILINE, 0xffffffffL},
 993                 { "ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
 994                 { NULL, 0, 0}
 995         };
 996         return set_multi_opts(flags, arg, ex_tbl);
 997 }
 998
 999 int set_ext_copy(int *copy_type, const char *arg)
1000 {
1001         if (!strcasecmp(arg, "none"))
1002                 *copy_type = EXT_COPY_NONE;
1003         else if (!strcasecmp(arg, "copy"))
1004                 *copy_type = EXT_COPY_ADD;
1005         else if (!strcasecmp(arg, "copyall"))
1006                 *copy_type = EXT_COPY_ALL;
1007         else
1008                 return 0;
1009         return 1;
1010 }
1011
1012 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1013 {
1014         STACK_OF(X509_EXTENSION) *exts = NULL;
1015         X509_EXTENSION *ext, *tmpext;
1016         ASN1_OBJECT *obj;
1017         int i, idx, ret = 0;
1018         if (!x || !req || (copy_type == EXT_COPY_NONE))
1019                 return 1;
1020         exts = X509_REQ_get_extensions(req);
1021
1022         for(i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1023                 ext = sk_X509_EXTENSION_value(exts, i);
1024                 obj = X509_EXTENSION_get_object(ext);
1025                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1026                 /* Does extension exist? */
1027                 if (idx != -1) {
1028                         /* If normal copy don't override existing extension */
1029                         if (copy_type == EXT_COPY_ADD)
1030                                 continue;
1031                         /* Delete all extensions of same type */
1032                         do {
1033                                 tmpext = X509_get_ext(x, idx);
1034                                 X509_delete_ext(x, idx);
1035                                 X509_EXTENSION_free(tmpext);
1036                                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1037                         } while (idx != -1);
1038                 }
1039                 if (!X509_add_ext(x, ext, -1))
1040                         goto end;
1041         }
1042
1043         ret = 1;
1044
1045         end:
1046
1047         sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1048
1049         return ret;
1050 }
1051
1052
1053
1054
1055 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1056 {
1057         STACK_OF(CONF_VALUE) *vals;
1058         CONF_VALUE *val;
1059         int i, ret = 1;
1060         if(!arg) return 0;
1061         vals = X509V3_parse_list(arg);
1062         for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1063                 val = sk_CONF_VALUE_value(vals, i);
1064                 if (!set_table_opts(flags, val->name, in_tbl))
1065                         ret = 0;
1066         }
1067         sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1068         return ret;
1069 }
1070
1071 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1072 {
1073         char c;
1074         const NAME_EX_TBL *ptbl;
1075         c = arg[0];
1076
1077         if(c == '-') {
1078                 c = 0;
1079                 arg++;
1080         } else if (c == '+') {
1081                 c = 1;
1082                 arg++;
1083         } else c = 1;
1084
1085         for(ptbl = in_tbl; ptbl->name; ptbl++) {
1086                 if(!strcasecmp(arg, ptbl->name)) {
1087                         *flags &= ~ptbl->mask;
1088                         if(c) *flags |= ptbl->flag;
1089                         else *flags &= ~ptbl->flag;
1090                         return 1;
1091                 }
1092         }
1093         return 0;
1094 }
1095
1096 void print_name(BIO *out, char *title, X509_NAME *nm, unsigned long lflags)
1097 {
1098         char buf[256];
1099         char mline = 0;
1100         int indent = 0;
1101         if(title) BIO_puts(out, title);
1102         if((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1103                 mline = 1;
1104                 indent = 4;
1105         }
1106         if(lflags == XN_FLAG_COMPAT) {
1107                 X509_NAME_oneline(nm,buf,256);
1108                 BIO_puts(out,buf);
1109                 BIO_puts(out, "\n");
1110         } else {
1111                 if(mline) BIO_puts(out, "\n");
1112                 X509_NAME_print_ex(out, nm, indent, lflags);
1113                 BIO_puts(out, "\n");
1114         }
1115 }
1116
1117 X509_STORE *setup_verify(BIO *bp, char *CAfile, char *CApath)
1118 {
1119         X509_STORE *store;
1120         X509_LOOKUP *lookup;
1121         if(!(store = X509_STORE_new())) goto end;
1122         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
1123         if (lookup == NULL) goto end;
1124         if (CAfile) {
1125                 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
1126                         BIO_printf(bp, "Error loading file %s\n", CAfile);
1127                         goto end;
1128                 }
1129         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
1130
1131         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
1132         if (lookup == NULL) goto end;
1133         if (CApath) {
1134                 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
1135                         BIO_printf(bp, "Error loading directory %s\n", CApath);
1136                         goto end;
1137                 }
1138         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
1139
1140         ERR_clear_error();
1141         return store;
1142         end:
1143         X509_STORE_free(store);
1144         return NULL;
1145 }
1146
1147 ENGINE *setup_engine(BIO *err, const char *engine, int debug)
1148         {
1149         ENGINE *e = NULL;
1150
1151         if (engine)
1152                 {
1153                 if(strcmp(engine, "auto") == 0)
1154                         {
1155                         BIO_printf(err,"enabling auto ENGINE support\n");
1156                         ENGINE_register_all_complete();
1157                         return NULL;
1158                         }
1159                 if((e = ENGINE_by_id(engine)) == NULL)
1160                         {
1161                         BIO_printf(err,"invalid engine \"%s\"\n", engine);
1162                         return NULL;
1163                         }
1164                 if (debug)
1165                         {
1166                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
1167                                 0, err, 0);
1168                         }
1169                 ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1170                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
1171                         {
1172                         BIO_printf(err,"can't use that engine\n");
1173                         return NULL;
1174                         }
1175
1176                 BIO_printf(err,"engine \"%s\" set.\n", engine);
1177
1178                 /* Free our "structural" reference. */
1179                 ENGINE_free(e);
1180                 }
1181         return e;
1182         }