f0c280c38d953a086775c6de386344d626cf00fe
[openssl.git] / 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  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111
112 #include <stdio.h>
113 #include <stdlib.h>
114 #include <string.h>
115 #include <sys/types.h>
116 #include <sys/stat.h>
117 #define NON_MAIN
118 #include "apps.h"
119 #undef NON_MAIN
120 #include <openssl/err.h>
121 #include <openssl/x509.h>
122 #include <openssl/x509v3.h>
123 #include <openssl/pem.h>
124 #include <openssl/pkcs12.h>
125 #include <openssl/ui.h>
126 #include <openssl/safestack.h>
127 #include <openssl/engine.h>
128
129 #ifdef OPENSSL_SYS_WINDOWS
130 #define strcasecmp _stricmp
131 #else
132 #include <strings.h>
133 #endif
134
135 #ifdef OPENSSL_SYS_WINDOWS
136 #  include "bss_file.c"
137 #endif
138
139 typedef struct {
140         char *name;
141         unsigned long flag;
142         unsigned long mask;
143 } NAME_EX_TBL;
144
145 static UI_METHOD *ui_method = NULL;
146
147 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
148 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
149
150 #ifndef OPENSSL_NO_RC4
151 /* Looks like this stuff is worth moving into separate function */
152 static EVP_PKEY *
153 load_netscape_key(BIO *err, BIO *key, const char *file,
154                 const char *key_descrip, int format);
155 #endif
156
157 int app_init(long mesgwin);
158 #ifdef undef /* never finished - probably never will be :-) */
159 int args_from_file(char *file, int *argc, char **argv[])
160         {
161         FILE *fp;
162         int num,i;
163         unsigned int len;
164         static char *buf=NULL;
165         static char **arg=NULL;
166         char *p;
167         struct stat stbuf;
168
169         if (stat(file,&stbuf) < 0) return(0);
170
171         fp=fopen(file,"r");
172         if (fp == NULL)
173                 return(0);
174
175         *argc=0;
176         *argv=NULL;
177
178         len=(unsigned int)stbuf.st_size;
179         if (buf != NULL) OPENSSL_free(buf);
180         buf=(char *)OPENSSL_malloc(len+1);
181         if (buf == NULL) return(0);
182
183         len=fread(buf,1,len,fp);
184         if (len <= 1) return(0);
185         buf[len]='\0';
186
187         i=0;
188         for (p=buf; *p; p++)
189                 if (*p == '\n') i++;
190         if (arg != NULL) OPENSSL_free(arg);
191         arg=(char **)OPENSSL_malloc(sizeof(char *)*(i*2));
192
193         *argv=arg;
194         num=0;
195         p=buf;
196         for (;;)
197                 {
198                 if (!*p) break;
199                 if (*p == '#') /* comment line */
200                         {
201                         while (*p && (*p != '\n')) p++;
202                         continue;
203                         }
204                 /* else we have a line */
205                 *(arg++)=p;
206                 num++;
207                 while (*p && ((*p != ' ') && (*p != '\t') && (*p != '\n')))
208                         p++;
209                 if (!*p) break;
210                 if (*p == '\n')
211                         {
212                         *(p++)='\0';
213                         continue;
214                         }
215                 /* else it is a tab or space */
216                 p++;
217                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
218                         p++;
219                 if (!*p) break;
220                 if (*p == '\n')
221                         {
222                         p++;
223                         continue;
224                         }
225                 *(arg++)=p++;
226                 num++;
227                 while (*p && (*p != '\n')) p++;
228                 if (!*p) break;
229                 /* else *p == '\n' */
230                 *(p++)='\0';
231                 }
232         *argc=num;
233         return(1);
234         }
235 #endif
236
237 int str2fmt(char *s)
238         {
239         if      ((*s == 'D') || (*s == 'd'))
240                 return(FORMAT_ASN1);
241         else if ((*s == 'T') || (*s == 't'))
242                 return(FORMAT_TEXT);
243         else if ((*s == 'P') || (*s == 'p'))
244                 return(FORMAT_PEM);
245         else if ((*s == 'N') || (*s == 'n'))
246                 return(FORMAT_NETSCAPE);
247         else if ((*s == 'S') || (*s == 's'))
248                 return(FORMAT_SMIME);
249         else if ((*s == '1')
250                 || (strcmp(s,"PKCS12") == 0) || (strcmp(s,"pkcs12") == 0)
251                 || (strcmp(s,"P12") == 0) || (strcmp(s,"p12") == 0))
252                 return(FORMAT_PKCS12);
253         else if ((*s == 'E') || (*s == 'e'))
254                 return(FORMAT_ENGINE);
255         else
256                 return(FORMAT_UNDEF);
257         }
258
259 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
260 void program_name(char *in, char *out, int size)
261         {
262         int i,n;
263         char *p=NULL;
264
265         n=strlen(in);
266         /* find the last '/', '\' or ':' */
267         for (i=n-1; i>0; i--)
268                 {
269                 if ((in[i] == '/') || (in[i] == '\\') || (in[i] == ':'))
270                         {
271                         p= &(in[i+1]);
272                         break;
273                         }
274                 }
275         if (p == NULL)
276                 p=in;
277         n=strlen(p);
278         /* strip off trailing .exe if present. */
279         if ((n > 4) && (p[n-4] == '.') &&
280                 ((p[n-3] == 'e') || (p[n-3] == 'E')) &&
281                 ((p[n-2] == 'x') || (p[n-2] == 'X')) &&
282                 ((p[n-1] == 'e') || (p[n-1] == 'E')))
283                 n-=4;
284         if (n > size-1)
285                 n=size-1;
286
287         for (i=0; i<n; i++)
288                 {
289                 if ((p[i] >= 'A') && (p[i] <= 'Z'))
290                         out[i]=p[i]-'A'+'a';
291                 else
292                         out[i]=p[i];
293                 }
294         out[n]='\0';
295         }
296 #else
297 #ifdef OPENSSL_SYS_VMS
298 void program_name(char *in, char *out, int size)
299         {
300         char *p=in, *q;
301         char *chars=":]>";
302
303         while(*chars != '\0')
304                 {
305                 q=strrchr(p,*chars);
306                 if (q > p)
307                         p = q + 1;
308                 chars++;
309                 }
310
311         q=strrchr(p,'.');
312         if (q == NULL)
313                 q = in+size;
314         strncpy(out,p,q-p);
315         out[q-p]='\0';
316         }
317 #else
318 void program_name(char *in, char *out, int size)
319         {
320         char *p;
321
322         p=strrchr(in,'/');
323         if (p != NULL)
324                 p++;
325         else
326                 p=in;
327         strncpy(out,p,size-1);
328         out[size-1]='\0';
329         }
330 #endif
331 #endif
332
333 #ifdef OPENSSL_SYS_WIN32
334 int WIN32_rename(char *from, char *to)
335         {
336         /* Windows rename gives an error if 'to' exists, so delete it
337          * first and ignore file not found errror
338          */
339         if((remove(to) != 0) && (errno != ENOENT))
340                 return -1;
341 #undef rename
342         return rename(from, to);
343         }
344 #endif
345
346 int chopup_args(ARGS *arg, char *buf, int *argc, char **argv[])
347         {
348         int num,len,i;
349         char *p;
350
351         *argc=0;
352         *argv=NULL;
353
354         len=strlen(buf);
355         i=0;
356         if (arg->count == 0)
357                 {
358                 arg->count=20;
359                 arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);
360                 }
361         for (i=0; i<arg->count; i++)
362                 arg->data[i]=NULL;
363
364         num=0;
365         p=buf;
366         for (;;)
367                 {
368                 /* first scan over white space */
369                 if (!*p) break;
370                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
371                         p++;
372                 if (!*p) break;
373
374                 /* The start of something good :-) */
375                 if (num >= arg->count)
376                         {
377                         arg->count+=20;
378                         arg->data=(char **)OPENSSL_realloc(arg->data,
379                                 sizeof(char *)*arg->count);
380                         if (argc == 0) return(0);
381                         }
382                 arg->data[num++]=p;
383
384                 /* now look for the end of this */
385                 if ((*p == '\'') || (*p == '\"')) /* scan for closing quote */
386                         {
387                         i= *(p++);
388                         arg->data[num-1]++; /* jump over quote */
389                         while (*p && (*p != i))
390                                 p++;
391                         *p='\0';
392                         }
393                 else
394                         {
395                         while (*p && ((*p != ' ') &&
396                                 (*p != '\t') && (*p != '\n')))
397                                 p++;
398
399                         if (*p == '\0')
400                                 p--;
401                         else
402                                 *p='\0';
403                         }
404                 p++;
405                 }
406         *argc=num;
407         *argv=arg->data;
408         return(1);
409         }
410
411 #ifndef APP_INIT
412 int app_init(long mesgwin)
413         {
414         return(1);
415         }
416 #endif
417
418
419 int dump_cert_text (BIO *out, X509 *x)
420 {
421         char buf[256];
422         X509_NAME_oneline(X509_get_subject_name(x),buf,256);
423         BIO_puts(out,"subject=");
424         BIO_puts(out,buf);
425
426         X509_NAME_oneline(X509_get_issuer_name(x),buf,256);
427         BIO_puts(out,"\nissuer= ");
428         BIO_puts(out,buf);
429         BIO_puts(out,"\n");
430         return 0;
431 }
432
433 static int ui_open(UI *ui)
434         {
435         return UI_method_get_opener(UI_OpenSSL())(ui);
436         }
437 static int ui_read(UI *ui, UI_STRING *uis)
438         {
439         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
440                 && UI_get0_user_data(ui))
441                 {
442                 switch(UI_get_string_type(uis))
443                         {
444                 case UIT_PROMPT:
445                 case UIT_VERIFY:
446                         {
447                         const char *password =
448                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
449                         if (password[0] != '\0')
450                                 {
451                                 UI_set_result(ui, uis, password);
452                                 return 1;
453                                 }
454                         }
455                 default:
456                         break;
457                         }
458                 }
459         return UI_method_get_reader(UI_OpenSSL())(ui, uis);
460         }
461 static int ui_write(UI *ui, UI_STRING *uis)
462         {
463         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
464                 && UI_get0_user_data(ui))
465                 {
466                 switch(UI_get_string_type(uis))
467                         {
468                 case UIT_PROMPT:
469                 case UIT_VERIFY:
470                         {
471                         const char *password =
472                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
473                         if (password[0] != '\0')
474                                 return 1;
475                         }
476                 default:
477                         break;
478                         }
479                 }
480         return UI_method_get_writer(UI_OpenSSL())(ui, uis);
481         }
482 static int ui_close(UI *ui)
483         {
484         return UI_method_get_closer(UI_OpenSSL())(ui);
485         }
486 int setup_ui_method()
487         {
488         ui_method = UI_create_method("OpenSSL application user interface");
489         UI_method_set_opener(ui_method, ui_open);
490         UI_method_set_reader(ui_method, ui_read);
491         UI_method_set_writer(ui_method, ui_write);
492         UI_method_set_closer(ui_method, ui_close);
493         return 0;
494         }
495 void destroy_ui_method()
496         {
497         if(ui_method)
498                 {
499                 UI_destroy_method(ui_method);
500                 ui_method = NULL;
501                 }
502         }
503 int password_callback(char *buf, int bufsiz, int verify,
504         PW_CB_DATA *cb_tmp)
505         {
506         UI *ui = NULL;
507         int res = 0;
508         const char *prompt_info = NULL;
509         const char *password = NULL;
510         PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
511
512         if (cb_data)
513                 {
514                 if (cb_data->password)
515                         password = cb_data->password;
516                 if (cb_data->prompt_info)
517                         prompt_info = cb_data->prompt_info;
518                 }
519
520         if (password)
521                 {
522                 res = strlen(password);
523                 if (res > bufsiz)
524                         res = bufsiz;
525                 memcpy(buf, password, res);
526                 return res;
527                 }
528
529         ui = UI_new_method(ui_method);
530         if (ui)
531                 {
532                 int ok = 0;
533                 char *buff = NULL;
534                 int ui_flags = 0;
535                 char *prompt = NULL;
536
537                 prompt = UI_construct_prompt(ui, "pass phrase",
538                         cb_data->prompt_info);
539
540                 ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
541                 UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
542
543                 if (ok >= 0)
544                         ok = UI_add_input_string(ui,prompt,ui_flags,buf,
545                                 PW_MIN_LENGTH,BUFSIZ-1);
546                 if (ok >= 0 && verify)
547                         {
548                         buff = (char *)OPENSSL_malloc(bufsiz);
549                         ok = UI_add_verify_string(ui,prompt,ui_flags,buff,
550                                 PW_MIN_LENGTH,BUFSIZ-1, buf);
551                         }
552                 if (ok >= 0)
553                         do
554                                 {
555                                 ok = UI_process(ui);
556                                 }
557                         while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
558
559                 if (buff)
560                         {
561                         memset(buff,0,(unsigned int)bufsiz);
562                         OPENSSL_free(buff);
563                         }
564
565                 if (ok >= 0)
566                         res = strlen(buf);
567                 if (ok == -1)
568                         {
569                         BIO_printf(bio_err, "User interface error\n");
570                         ERR_print_errors(bio_err);
571                         memset(buf,0,(unsigned int)bufsiz);
572                         res = 0;
573                         }
574                 if (ok == -2)
575                         {
576                         BIO_printf(bio_err,"aborted!\n");
577                         memset(buf,0,(unsigned int)bufsiz);
578                         res = 0;
579                         }
580                 UI_free(ui);
581                 OPENSSL_free(prompt);
582                 }
583         return res;
584         }
585
586 static char *app_get_pass(BIO *err, char *arg, int keepbio);
587
588 int app_passwd(BIO *err, char *arg1, char *arg2, char **pass1, char **pass2)
589 {
590         int same;
591         if(!arg2 || !arg1 || strcmp(arg1, arg2)) same = 0;
592         else same = 1;
593         if(arg1) {
594                 *pass1 = app_get_pass(err, arg1, same);
595                 if(!*pass1) return 0;
596         } else if(pass1) *pass1 = NULL;
597         if(arg2) {
598                 *pass2 = app_get_pass(err, arg2, same ? 2 : 0);
599                 if(!*pass2) return 0;
600         } else if(pass2) *pass2 = NULL;
601         return 1;
602 }
603
604 static char *app_get_pass(BIO *err, char *arg, int keepbio)
605 {
606         char *tmp, tpass[APP_PASS_LEN];
607         static BIO *pwdbio = NULL;
608         int i;
609         if(!strncmp(arg, "pass:", 5)) return BUF_strdup(arg + 5);
610         if(!strncmp(arg, "env:", 4)) {
611                 tmp = getenv(arg + 4);
612                 if(!tmp) {
613                         BIO_printf(err, "Can't read environment variable %s\n", arg + 4);
614                         return NULL;
615                 }
616                 return BUF_strdup(tmp);
617         }
618         if(!keepbio || !pwdbio) {
619                 if(!strncmp(arg, "file:", 5)) {
620                         pwdbio = BIO_new_file(arg + 5, "r");
621                         if(!pwdbio) {
622                                 BIO_printf(err, "Can't open file %s\n", arg + 5);
623                                 return NULL;
624                         }
625                 } else if(!strncmp(arg, "fd:", 3)) {
626                         BIO *btmp;
627                         i = atoi(arg + 3);
628                         if(i >= 0) pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
629                         if((i < 0) || !pwdbio) {
630                                 BIO_printf(err, "Can't access file descriptor %s\n", arg + 3);
631                                 return NULL;
632                         }
633                         /* Can't do BIO_gets on an fd BIO so add a buffering BIO */
634                         btmp = BIO_new(BIO_f_buffer());
635                         pwdbio = BIO_push(btmp, pwdbio);
636                 } else if(!strcmp(arg, "stdin")) {
637                         pwdbio = BIO_new_fp(stdin, BIO_NOCLOSE);
638                         if(!pwdbio) {
639                                 BIO_printf(err, "Can't open BIO for stdin\n");
640                                 return NULL;
641                         }
642                 } else {
643                         BIO_printf(err, "Invalid password argument \"%s\"\n", arg);
644                         return NULL;
645                 }
646         }
647         i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
648         if(keepbio != 1) {
649                 BIO_free_all(pwdbio);
650                 pwdbio = NULL;
651         }
652         if(i <= 0) {
653                 BIO_printf(err, "Error reading password from BIO\n");
654                 return NULL;
655         }
656         tmp = strchr(tpass, '\n');
657         if(tmp) *tmp = 0;
658         return BUF_strdup(tpass);
659 }
660
661 int add_oid_section(BIO *err, CONF *conf)
662 {       
663         char *p;
664         STACK_OF(CONF_VALUE) *sktmp;
665         CONF_VALUE *cnf;
666         int i;
667         if(!(p=NCONF_get_string(conf,NULL,"oid_section")))
668                 {
669                 ERR_clear_error();
670                 return 1;
671                 }
672         if(!(sktmp = NCONF_get_section(conf, p))) {
673                 BIO_printf(err, "problem loading oid section %s\n", p);
674                 return 0;
675         }
676         for(i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
677                 cnf = sk_CONF_VALUE_value(sktmp, i);
678                 if(OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
679                         BIO_printf(err, "problem creating object %s=%s\n",
680                                                          cnf->name, cnf->value);
681                         return 0;
682                 }
683         }
684         return 1;
685 }
686
687 X509 *load_cert(BIO *err, const char *file, int format,
688         const char *pass, ENGINE *e, const char *cert_descrip)
689         {
690         ASN1_HEADER *ah=NULL;
691         BUF_MEM *buf=NULL;
692         X509 *x=NULL;
693         BIO *cert;
694
695         if ((cert=BIO_new(BIO_s_file())) == NULL)
696                 {
697                 ERR_print_errors(err);
698                 goto end;
699                 }
700
701         if (file == NULL)
702                 {
703                 setvbuf(stdin, NULL, _IONBF, 0);
704                 BIO_set_fp(cert,stdin,BIO_NOCLOSE);
705                 }
706         else
707                 {
708                 if (BIO_read_filename(cert,file) <= 0)
709                         {
710                         BIO_printf(err, "Error opening %s %s\n",
711                                 cert_descrip, file);
712                         ERR_print_errors(err);
713                         goto end;
714                         }
715                 }
716
717         if      (format == FORMAT_ASN1)
718                 x=d2i_X509_bio(cert,NULL);
719         else if (format == FORMAT_NETSCAPE)
720                 {
721                 unsigned char *p,*op;
722                 int size=0,i;
723
724                 /* We sort of have to do it this way because it is sort of nice
725                  * to read the header first and check it, then
726                  * try to read the certificate */
727                 buf=BUF_MEM_new();
728                 for (;;)
729                         {
730                         if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))
731                                 goto end;
732                         i=BIO_read(cert,&(buf->data[size]),1024*10);
733                         size+=i;
734                         if (i == 0) break;
735                         if (i < 0)
736                                 {
737                                 perror("reading certificate");
738                                 goto end;
739                                 }
740                         }
741                 p=(unsigned char *)buf->data;
742                 op=p;
743
744                 /* First load the header */
745                 if ((ah=d2i_ASN1_HEADER(NULL,&p,(long)size)) == NULL)
746                         goto end;
747                 if ((ah->header == NULL) || (ah->header->data == NULL) ||
748                         (strncmp(NETSCAPE_CERT_HDR,(char *)ah->header->data,
749                         ah->header->length) != 0))
750                         {
751                         BIO_printf(err,"Error reading header on certificate\n");
752                         goto end;
753                         }
754                 /* header is ok, so now read the object */
755                 p=op;
756                 ah->meth=X509_asn1_meth();
757                 if ((ah=d2i_ASN1_HEADER(&ah,&p,(long)size)) == NULL)
758                         goto end;
759                 x=(X509 *)ah->data;
760                 ah->data=NULL;
761                 }
762         else if (format == FORMAT_PEM)
763                 x=PEM_read_bio_X509_AUX(cert,NULL,
764                         (pem_password_cb *)password_callback, NULL);
765         else if (format == FORMAT_PKCS12)
766                 {
767                 PKCS12 *p12 = d2i_PKCS12_bio(cert, NULL);
768
769                 PKCS12_parse(p12, NULL, NULL, &x, NULL);
770                 PKCS12_free(p12);
771                 p12 = NULL;
772                 }
773         else    {
774                 BIO_printf(err,"bad input format specified for %s\n",
775                         cert_descrip);
776                 goto end;
777                 }
778 end:
779         if (x == NULL)
780                 {
781                 BIO_printf(err,"unable to load certificate\n");
782                 ERR_print_errors(err);
783                 }
784         if (ah != NULL) ASN1_HEADER_free(ah);
785         if (cert != NULL) BIO_free(cert);
786         if (buf != NULL) BUF_MEM_free(buf);
787         return(x);
788         }
789
790 EVP_PKEY *load_key(BIO *err, const char *file, int format,
791         const char *pass, ENGINE *e, const char *key_descrip)
792         {
793         BIO *key=NULL;
794         EVP_PKEY *pkey=NULL;
795         PW_CB_DATA cb_data;
796
797         cb_data.password = pass;
798         cb_data.prompt_info = file;
799
800         if (file == NULL)
801                 {
802                 BIO_printf(err,"no keyfile specified\n");
803                 goto end;
804                 }
805         if (format == FORMAT_ENGINE)
806                 {
807                 if (!e)
808                         BIO_printf(bio_err,"no engine specified\n");
809                 else
810                         pkey = ENGINE_load_private_key(e, file,
811                                 ui_method, &cb_data);
812                 goto end;
813                 }
814         key=BIO_new(BIO_s_file());
815         if (key == NULL)
816                 {
817                 ERR_print_errors(err);
818                 goto end;
819                 }
820         if (BIO_read_filename(key,file) <= 0)
821                 {
822                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
823                 ERR_print_errors(err);
824                 goto end;
825                 }
826         if (format == FORMAT_ASN1)
827                 {
828                 pkey=d2i_PrivateKey_bio(key, NULL);
829                 }
830         else if (format == FORMAT_PEM)
831                 {
832                 pkey=PEM_read_bio_PrivateKey(key,NULL,
833                         (pem_password_cb *)password_callback, &cb_data);
834                 }
835 #ifndef OPENSSL_NO_RC4
836         else if (format == FORMAT_NETSCAPE || format == FORMAT_IISSGC)
837                 pkey = load_netscape_key(err, key, file, key_descrip, format);
838 #endif
839         else if (format == FORMAT_PKCS12)
840                 {
841                 PKCS12 *p12 = d2i_PKCS12_bio(key, NULL);
842
843                 PKCS12_parse(p12, pass, &pkey, NULL, NULL);
844                 PKCS12_free(p12);
845                 p12 = NULL;
846                 }
847         else
848                 {
849                 BIO_printf(err,"bad input format specified for key file\n");
850                 goto end;
851                 }
852  end:
853         if (key != NULL) BIO_free(key);
854         if (pkey == NULL)
855                 BIO_printf(err,"unable to load %s\n", key_descrip);
856         return(pkey);
857         }
858
859 EVP_PKEY *load_pubkey(BIO *err, const char *file, int format,
860         const char *pass, ENGINE *e, const char *key_descrip)
861         {
862         BIO *key=NULL;
863         EVP_PKEY *pkey=NULL;
864         PW_CB_DATA cb_data;
865
866         cb_data.password = pass;
867         cb_data.prompt_info = file;
868
869         if (file == NULL)
870                 {
871                 BIO_printf(err,"no keyfile specified\n");
872                 goto end;
873                 }
874         if (format == FORMAT_ENGINE)
875                 {
876                 if (!e)
877                         BIO_printf(bio_err,"no engine specified\n");
878                 else
879                         pkey = ENGINE_load_public_key(e, file,
880                                 ui_method, &cb_data);
881                 goto end;
882                 }
883         key=BIO_new(BIO_s_file());
884         if (key == NULL)
885                 {
886                 ERR_print_errors(err);
887                 goto end;
888                 }
889         if (BIO_read_filename(key,file) <= 0)
890                 {
891                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
892                 ERR_print_errors(err);
893                 goto end;
894                 }
895         if (format == FORMAT_ASN1)
896                 {
897                 pkey=d2i_PUBKEY_bio(key, NULL);
898                 }
899         else if (format == FORMAT_PEM)
900                 {
901                 pkey=PEM_read_bio_PUBKEY(key,NULL,
902                         (pem_password_cb *)password_callback, &cb_data);
903                 }
904 #ifndef OPENSSL_NO_RC4
905         else if (format == FORMAT_NETSCAPE || format == FORMAT_IISSGC)
906                 pkey = load_netscape_key(err, key, file, key_descrip, format);
907 #endif
908         else
909                 {
910                 BIO_printf(err,"bad input format specified for key file\n");
911                 goto end;
912                 }
913  end:
914         if (key != NULL) BIO_free(key);
915         if (pkey == NULL)
916                 BIO_printf(err,"unable to load %s\n", key_descrip);
917         return(pkey);
918         }
919
920 #ifndef OPENSSL_NO_RC4
921 EVP_PKEY *
922 load_netscape_key(BIO *err, BIO *key, const char *file,
923                 const char *key_descrip, int format)
924         {
925         EVP_PKEY *pkey;
926         BUF_MEM *buf;
927         RSA     *rsa;
928         const unsigned char *p;
929         int size, i;
930
931         buf=BUF_MEM_new();
932         pkey = EVP_PKEY_new();
933         size = 0;
934         if (buf == NULL || pkey == NULL)
935                 goto error;
936         for (;;)
937                 {
938                 if (!BUF_MEM_grow(buf,size+1024*10))
939                         goto error;
940                 i = BIO_read(key, &(buf->data[size]), 1024*10);
941                 size += i;
942                 if (i == 0)
943                         break;
944                 if (i < 0)
945                         {
946                                 BIO_printf(err, "Error reading %s %s",
947                                         key_descrip, file);
948                                 goto error;
949                         }
950                 }
951         p=(unsigned char *)buf->data;
952         rsa = d2i_RSA_NET(NULL,&p,(long)size,NULL,
953                 (format == FORMAT_IISSGC ? 1 : 0));
954         if (rsa == NULL)
955                 goto error;
956         BUF_MEM_free(buf);
957         EVP_PKEY_set1_RSA(pkey, rsa);
958         return pkey;
959 error:
960         BUF_MEM_free(buf);
961         EVP_PKEY_free(pkey);
962         return NULL;
963         }
964 #endif /* ndef OPENSSL_NO_RC4 */
965
966 STACK_OF(X509) *load_certs(BIO *err, const char *file, int format,
967         const char *pass, ENGINE *e, const char *cert_descrip)
968         {
969         BIO *certs;
970         int i;
971         STACK_OF(X509) *othercerts = NULL;
972         STACK_OF(X509_INFO) *allcerts = NULL;
973         X509_INFO *xi;
974         PW_CB_DATA cb_data;
975
976         cb_data.password = pass;
977         cb_data.prompt_info = file;
978
979         if((certs = BIO_new(BIO_s_file())) == NULL)
980                 {
981                 ERR_print_errors(err);
982                 goto end;
983                 }
984
985         if (file == NULL)
986                 BIO_set_fp(certs,stdin,BIO_NOCLOSE);
987         else
988                 {
989                 if (BIO_read_filename(certs,file) <= 0)
990                         {
991                         BIO_printf(err, "Error opening %s %s\n",
992                                 cert_descrip, file);
993                         ERR_print_errors(err);
994                         goto end;
995                         }
996                 }
997
998         if      (format == FORMAT_PEM)
999                 {
1000                 othercerts = sk_X509_new_null();
1001                 if(!othercerts)
1002                         {
1003                         sk_X509_free(othercerts);
1004                         othercerts = NULL;
1005                         goto end;
1006                         }
1007                 allcerts = PEM_X509_INFO_read_bio(certs, NULL,
1008                                 (pem_password_cb *)password_callback, &cb_data);
1009                 for(i = 0; i < sk_X509_INFO_num(allcerts); i++)
1010                         {
1011                         xi = sk_X509_INFO_value (allcerts, i);
1012                         if (xi->x509)
1013                                 {
1014                                 sk_X509_push(othercerts, xi->x509);
1015                                 xi->x509 = NULL;
1016                                 }
1017                         }
1018                 goto end;
1019                 }
1020         else    {
1021                 BIO_printf(err,"bad input format specified for %s\n",
1022                         cert_descrip);
1023                 goto end;
1024                 }
1025 end:
1026         if (othercerts == NULL)
1027                 {
1028                 BIO_printf(err,"unable to load certificates\n");
1029                 ERR_print_errors(err);
1030                 }
1031         if (allcerts) sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
1032         if (certs != NULL) BIO_free(certs);
1033         return(othercerts);
1034         }
1035
1036
1037 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
1038 /* Return error for unknown extensions */
1039 #define X509V3_EXT_DEFAULT              0
1040 /* Print error for unknown extensions */
1041 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
1042 /* ASN1 parse unknown extensions */
1043 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
1044 /* BIO_dump unknown extensions */
1045 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
1046
1047 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
1048                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
1049
1050 int set_cert_ex(unsigned long *flags, const char *arg)
1051 {
1052         static const NAME_EX_TBL cert_tbl[] = {
1053                 { "compatible", X509_FLAG_COMPAT, 0xffffffffl},
1054                 { "ca_default", X509_FLAG_CA, 0xffffffffl},
1055                 { "no_header", X509_FLAG_NO_HEADER, 0},
1056                 { "no_version", X509_FLAG_NO_VERSION, 0},
1057                 { "no_serial", X509_FLAG_NO_SERIAL, 0},
1058                 { "no_signame", X509_FLAG_NO_SIGNAME, 0},
1059                 { "no_validity", X509_FLAG_NO_VALIDITY, 0},
1060                 { "no_subject", X509_FLAG_NO_SUBJECT, 0},
1061                 { "no_issuer", X509_FLAG_NO_ISSUER, 0},
1062                 { "no_pubkey", X509_FLAG_NO_PUBKEY, 0},
1063                 { "no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
1064                 { "no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
1065                 { "no_aux", X509_FLAG_NO_AUX, 0},
1066                 { "ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
1067                 { "ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1068                 { "ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1069                 { "ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1070                 { NULL, 0, 0}
1071         };
1072         return set_multi_opts(flags, arg, cert_tbl);
1073 }
1074
1075 int set_name_ex(unsigned long *flags, const char *arg)
1076 {
1077         static const NAME_EX_TBL ex_tbl[] = {
1078                 { "esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1079                 { "esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1080                 { "esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1081                 { "use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1082                 { "utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1083                 { "ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1084                 { "show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1085                 { "dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1086                 { "dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1087                 { "dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1088                 { "compat", XN_FLAG_COMPAT, 0xffffffffL},
1089                 { "sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1090                 { "sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1091                 { "sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1092                 { "sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1093                 { "dn_rev", XN_FLAG_DN_REV, 0},
1094                 { "nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1095                 { "sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1096                 { "lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1097                 { "align", XN_FLAG_FN_ALIGN, 0},
1098                 { "oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1099                 { "space_eq", XN_FLAG_SPC_EQ, 0},
1100                 { "dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1101                 { "RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1102                 { "oneline", XN_FLAG_ONELINE, 0xffffffffL},
1103                 { "multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1104                 { "ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1105                 { NULL, 0, 0}
1106         };
1107         return set_multi_opts(flags, arg, ex_tbl);
1108 }
1109
1110 int set_ext_copy(int *copy_type, const char *arg)
1111 {
1112         if (!strcasecmp(arg, "none"))
1113                 *copy_type = EXT_COPY_NONE;
1114         else if (!strcasecmp(arg, "copy"))
1115                 *copy_type = EXT_COPY_ADD;
1116         else if (!strcasecmp(arg, "copyall"))
1117                 *copy_type = EXT_COPY_ALL;
1118         else
1119                 return 0;
1120         return 1;
1121 }
1122
1123 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1124 {
1125         STACK_OF(X509_EXTENSION) *exts = NULL;
1126         X509_EXTENSION *ext, *tmpext;
1127         ASN1_OBJECT *obj;
1128         int i, idx, ret = 0;
1129         if (!x || !req || (copy_type == EXT_COPY_NONE))
1130                 return 1;
1131         exts = X509_REQ_get_extensions(req);
1132
1133         for(i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1134                 ext = sk_X509_EXTENSION_value(exts, i);
1135                 obj = X509_EXTENSION_get_object(ext);
1136                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1137                 /* Does extension exist? */
1138                 if (idx != -1) {
1139                         /* If normal copy don't override existing extension */
1140                         if (copy_type == EXT_COPY_ADD)
1141                                 continue;
1142                         /* Delete all extensions of same type */
1143                         do {
1144                                 tmpext = X509_get_ext(x, idx);
1145                                 X509_delete_ext(x, idx);
1146                                 X509_EXTENSION_free(tmpext);
1147                                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1148                         } while (idx != -1);
1149                 }
1150                 if (!X509_add_ext(x, ext, -1))
1151                         goto end;
1152         }
1153
1154         ret = 1;
1155
1156         end:
1157
1158         sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1159
1160         return ret;
1161 }
1162                 
1163                 
1164                         
1165
1166 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1167 {
1168         STACK_OF(CONF_VALUE) *vals;
1169         CONF_VALUE *val;
1170         int i, ret = 1;
1171         if(!arg) return 0;
1172         vals = X509V3_parse_list(arg);
1173         for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1174                 val = sk_CONF_VALUE_value(vals, i);
1175                 if (!set_table_opts(flags, val->name, in_tbl))
1176                         ret = 0;
1177         }
1178         sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1179         return ret;
1180 }
1181
1182 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1183 {
1184         char c;
1185         const NAME_EX_TBL *ptbl;
1186         c = arg[0];
1187
1188         if(c == '-') {
1189                 c = 0;
1190                 arg++;
1191         } else if (c == '+') {
1192                 c = 1;
1193                 arg++;
1194         } else c = 1;
1195
1196         for(ptbl = in_tbl; ptbl->name; ptbl++) {
1197                 if(!strcasecmp(arg, ptbl->name)) {
1198                         *flags &= ~ptbl->mask;
1199                         if(c) *flags |= ptbl->flag;
1200                         else *flags &= ~ptbl->flag;
1201                         return 1;
1202                 }
1203         }
1204         return 0;
1205 }
1206
1207 void print_name(BIO *out, char *title, X509_NAME *nm, unsigned long lflags)
1208 {
1209         char buf[256];
1210         char mline = 0;
1211         int indent = 0;
1212         if(title) BIO_puts(out, title);
1213         if((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1214                 mline = 1;
1215                 indent = 4;
1216         }
1217         if(lflags == XN_FLAG_COMPAT) {
1218                 X509_NAME_oneline(nm,buf,256);
1219                 BIO_puts(out,buf);
1220                 BIO_puts(out, "\n");
1221         } else {
1222                 if(mline) BIO_puts(out, "\n");
1223                 X509_NAME_print_ex(out, nm, indent, lflags);
1224                 BIO_puts(out, "\n");
1225         }
1226 }
1227
1228 X509_STORE *setup_verify(BIO *bp, char *CAfile, char *CApath)
1229 {
1230         X509_STORE *store;
1231         X509_LOOKUP *lookup;
1232         if(!(store = X509_STORE_new())) goto end;
1233         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
1234         if (lookup == NULL) goto end;
1235         if (CAfile) {
1236                 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
1237                         BIO_printf(bp, "Error loading file %s\n", CAfile);
1238                         goto end;
1239                 }
1240         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
1241                 
1242         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
1243         if (lookup == NULL) goto end;
1244         if (CApath) {
1245                 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
1246                         BIO_printf(bp, "Error loading directory %s\n", CApath);
1247                         goto end;
1248                 }
1249         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
1250
1251         ERR_clear_error();
1252         return store;
1253         end:
1254         X509_STORE_free(store);
1255         return NULL;
1256 }
1257
1258 /* Try to load an engine in a shareable library */
1259 ENGINE *try_load_engine(BIO *err, const char *engine, int debug)
1260         {
1261         ENGINE *e = ENGINE_by_id("dynamic");
1262         if (e)
1263                 {
1264                 if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1265                         || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
1266                         {
1267                         ENGINE_free(e);
1268                         e = NULL;
1269                         }
1270                 }
1271         return e;
1272         }
1273
1274 ENGINE *setup_engine(BIO *err, const char *engine, int debug)
1275         {
1276         ENGINE *e = NULL;
1277
1278         if (engine)
1279                 {
1280                 if(strcmp(engine, "auto") == 0)
1281                         {
1282                         BIO_printf(err,"enabling auto ENGINE support\n");
1283                         ENGINE_register_all_complete();
1284                         return NULL;
1285                         }
1286                 if((e = ENGINE_by_id(engine)) == NULL
1287                         && (e = try_load_engine(err, engine, debug)) == NULL)
1288                         {
1289                         BIO_printf(err,"invalid engine \"%s\"\n", engine);
1290                         ERR_print_errors(err);
1291                         return NULL;
1292                         }
1293                 if (debug)
1294                         {
1295                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
1296                                 0, err, 0);
1297                         }
1298                 ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1299                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
1300                         {
1301                         BIO_printf(err,"can't use that engine\n");
1302                         ERR_print_errors(err);
1303                         ENGINE_free(e);
1304                         return NULL;
1305                         }
1306
1307                 BIO_printf(err,"engine \"%s\" set.\n", ENGINE_get_id(e));
1308
1309                 /* Free our "structural" reference. */
1310                 ENGINE_free(e);
1311                 }
1312         return e;
1313         }
1314
1315 int load_config(BIO *err, CONF *cnf)
1316         {
1317         if (!cnf)
1318                 cnf = config;
1319         if (!cnf)
1320                 return 1;
1321
1322         OPENSSL_load_builtin_modules();
1323
1324         if (CONF_modules_load(cnf, NULL, 0) <= 0)
1325                 {
1326                 BIO_printf(err, "Error configuring OpenSSL\n");
1327                 ERR_print_errors(err);
1328                 return 0;
1329                 }
1330         return 1;
1331         }