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[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 #  ifdef NO_STRINGS_H
133     int strcasecmp();
134 #  else
135 #    include <strings.h>
136 #  endif /* NO_STRINGS_H */
137 #endif
138
139 #ifdef OPENSSL_SYS_WINDOWS
140 #  include "bss_file.c"
141 #endif
142
143 typedef struct {
144         char *name;
145         unsigned long flag;
146         unsigned long mask;
147 } NAME_EX_TBL;
148
149 static UI_METHOD *ui_method = NULL;
150
151 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
152 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
153
154 #if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
155 /* Looks like this stuff is worth moving into separate function */
156 static EVP_PKEY *
157 load_netscape_key(BIO *err, BIO *key, const char *file,
158                 const char *key_descrip, int format);
159 #endif
160
161 int app_init(long mesgwin);
162 #ifdef undef /* never finished - probably never will be :-) */
163 int args_from_file(char *file, int *argc, char **argv[])
164         {
165         FILE *fp;
166         int num,i;
167         unsigned int len;
168         static char *buf=NULL;
169         static char **arg=NULL;
170         char *p;
171         struct stat stbuf;
172
173         if (stat(file,&stbuf) < 0) return(0);
174
175         fp=fopen(file,"r");
176         if (fp == NULL)
177                 return(0);
178
179         *argc=0;
180         *argv=NULL;
181
182         len=(unsigned int)stbuf.st_size;
183         if (buf != NULL) OPENSSL_free(buf);
184         buf=(char *)OPENSSL_malloc(len+1);
185         if (buf == NULL) return(0);
186
187         len=fread(buf,1,len,fp);
188         if (len <= 1) return(0);
189         buf[len]='\0';
190
191         i=0;
192         for (p=buf; *p; p++)
193                 if (*p == '\n') i++;
194         if (arg != NULL) OPENSSL_free(arg);
195         arg=(char **)OPENSSL_malloc(sizeof(char *)*(i*2));
196
197         *argv=arg;
198         num=0;
199         p=buf;
200         for (;;)
201                 {
202                 if (!*p) break;
203                 if (*p == '#') /* comment line */
204                         {
205                         while (*p && (*p != '\n')) p++;
206                         continue;
207                         }
208                 /* else we have a line */
209                 *(arg++)=p;
210                 num++;
211                 while (*p && ((*p != ' ') && (*p != '\t') && (*p != '\n')))
212                         p++;
213                 if (!*p) break;
214                 if (*p == '\n')
215                         {
216                         *(p++)='\0';
217                         continue;
218                         }
219                 /* else it is a tab or space */
220                 p++;
221                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
222                         p++;
223                 if (!*p) break;
224                 if (*p == '\n')
225                         {
226                         p++;
227                         continue;
228                         }
229                 *(arg++)=p++;
230                 num++;
231                 while (*p && (*p != '\n')) p++;
232                 if (!*p) break;
233                 /* else *p == '\n' */
234                 *(p++)='\0';
235                 }
236         *argc=num;
237         return(1);
238         }
239 #endif
240
241 int str2fmt(char *s)
242         {
243         if      ((*s == 'D') || (*s == 'd'))
244                 return(FORMAT_ASN1);
245         else if ((*s == 'T') || (*s == 't'))
246                 return(FORMAT_TEXT);
247         else if ((*s == 'P') || (*s == 'p'))
248                 return(FORMAT_PEM);
249         else if ((*s == 'N') || (*s == 'n'))
250                 return(FORMAT_NETSCAPE);
251         else if ((*s == 'S') || (*s == 's'))
252                 return(FORMAT_SMIME);
253         else if ((*s == '1')
254                 || (strcmp(s,"PKCS12") == 0) || (strcmp(s,"pkcs12") == 0)
255                 || (strcmp(s,"P12") == 0) || (strcmp(s,"p12") == 0))
256                 return(FORMAT_PKCS12);
257         else if ((*s == 'E') || (*s == 'e'))
258                 return(FORMAT_ENGINE);
259         else
260                 return(FORMAT_UNDEF);
261         }
262
263 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
264 void program_name(char *in, char *out, int size)
265         {
266         int i,n;
267         char *p=NULL;
268
269         n=strlen(in);
270         /* find the last '/', '\' or ':' */
271         for (i=n-1; i>0; i--)
272                 {
273                 if ((in[i] == '/') || (in[i] == '\\') || (in[i] == ':'))
274                         {
275                         p= &(in[i+1]);
276                         break;
277                         }
278                 }
279         if (p == NULL)
280                 p=in;
281         n=strlen(p);
282         /* strip off trailing .exe if present. */
283         if ((n > 4) && (p[n-4] == '.') &&
284                 ((p[n-3] == 'e') || (p[n-3] == 'E')) &&
285                 ((p[n-2] == 'x') || (p[n-2] == 'X')) &&
286                 ((p[n-1] == 'e') || (p[n-1] == 'E')))
287                 n-=4;
288         if (n > size-1)
289                 n=size-1;
290
291         for (i=0; i<n; i++)
292                 {
293                 if ((p[i] >= 'A') && (p[i] <= 'Z'))
294                         out[i]=p[i]-'A'+'a';
295                 else
296                         out[i]=p[i];
297                 }
298         out[n]='\0';
299         }
300 #else
301 #ifdef OPENSSL_SYS_VMS
302 void program_name(char *in, char *out, int size)
303         {
304         char *p=in, *q;
305         char *chars=":]>";
306
307         while(*chars != '\0')
308                 {
309                 q=strrchr(p,*chars);
310                 if (q > p)
311                         p = q + 1;
312                 chars++;
313                 }
314
315         q=strrchr(p,'.');
316         if (q == NULL)
317                 q = p + strlen(p);
318         strncpy(out,p,size-1);
319         if (q-p >= size)
320                 {
321                 out[size-1]='\0';
322                 }
323         else
324                 {
325                 out[q-p]='\0';
326                 }
327         }
328 #else
329 void program_name(char *in, char *out, int size)
330         {
331         char *p;
332
333         p=strrchr(in,'/');
334         if (p != NULL)
335                 p++;
336         else
337                 p=in;
338         strncpy(out,p,size-1);
339         out[size-1]='\0';
340         }
341 #endif
342 #endif
343
344 #ifdef OPENSSL_SYS_WIN32
345 int WIN32_rename(char *from, char *to)
346         {
347         /* Windows rename gives an error if 'to' exists, so delete it
348          * first and ignore file not found errror
349          */
350         if((remove(to) != 0) && (errno != ENOENT))
351                 return -1;
352 #undef rename
353         return rename(from, to);
354         }
355 #endif
356
357 int chopup_args(ARGS *arg, char *buf, int *argc, char **argv[])
358         {
359         int num,len,i;
360         char *p;
361
362         *argc=0;
363         *argv=NULL;
364
365         len=strlen(buf);
366         i=0;
367         if (arg->count == 0)
368                 {
369                 arg->count=20;
370                 arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);
371                 }
372         for (i=0; i<arg->count; i++)
373                 arg->data[i]=NULL;
374
375         num=0;
376         p=buf;
377         for (;;)
378                 {
379                 /* first scan over white space */
380                 if (!*p) break;
381                 while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
382                         p++;
383                 if (!*p) break;
384
385                 /* The start of something good :-) */
386                 if (num >= arg->count)
387                         {
388                         arg->count+=20;
389                         arg->data=(char **)OPENSSL_realloc(arg->data,
390                                 sizeof(char *)*arg->count);
391                         if (argc == 0) return(0);
392                         }
393                 arg->data[num++]=p;
394
395                 /* now look for the end of this */
396                 if ((*p == '\'') || (*p == '\"')) /* scan for closing quote */
397                         {
398                         i= *(p++);
399                         arg->data[num-1]++; /* jump over quote */
400                         while (*p && (*p != i))
401                                 p++;
402                         *p='\0';
403                         }
404                 else
405                         {
406                         while (*p && ((*p != ' ') &&
407                                 (*p != '\t') && (*p != '\n')))
408                                 p++;
409
410                         if (*p == '\0')
411                                 p--;
412                         else
413                                 *p='\0';
414                         }
415                 p++;
416                 }
417         *argc=num;
418         *argv=arg->data;
419         return(1);
420         }
421
422 #ifndef APP_INIT
423 int app_init(long mesgwin)
424         {
425         return(1);
426         }
427 #endif
428
429
430 int dump_cert_text (BIO *out, X509 *x)
431 {
432         char buf[256];
433         X509_NAME_oneline(X509_get_subject_name(x),buf,256);
434         BIO_puts(out,"subject=");
435         BIO_puts(out,buf);
436
437         X509_NAME_oneline(X509_get_issuer_name(x),buf,256);
438         BIO_puts(out,"\nissuer= ");
439         BIO_puts(out,buf);
440         BIO_puts(out,"\n");
441         return 0;
442 }
443
444 static int ui_open(UI *ui)
445         {
446         return UI_method_get_opener(UI_OpenSSL())(ui);
447         }
448 static int ui_read(UI *ui, UI_STRING *uis)
449         {
450         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
451                 && UI_get0_user_data(ui))
452                 {
453                 switch(UI_get_string_type(uis))
454                         {
455                 case UIT_PROMPT:
456                 case UIT_VERIFY:
457                         {
458                         const char *password =
459                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
460                         if (password[0] != '\0')
461                                 {
462                                 UI_set_result(ui, uis, password);
463                                 return 1;
464                                 }
465                         }
466                 default:
467                         break;
468                         }
469                 }
470         return UI_method_get_reader(UI_OpenSSL())(ui, uis);
471         }
472 static int ui_write(UI *ui, UI_STRING *uis)
473         {
474         if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
475                 && UI_get0_user_data(ui))
476                 {
477                 switch(UI_get_string_type(uis))
478                         {
479                 case UIT_PROMPT:
480                 case UIT_VERIFY:
481                         {
482                         const char *password =
483                                 ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
484                         if (password[0] != '\0')
485                                 return 1;
486                         }
487                 default:
488                         break;
489                         }
490                 }
491         return UI_method_get_writer(UI_OpenSSL())(ui, uis);
492         }
493 static int ui_close(UI *ui)
494         {
495         return UI_method_get_closer(UI_OpenSSL())(ui);
496         }
497 int setup_ui_method(void)
498         {
499         ui_method = UI_create_method("OpenSSL application user interface");
500         UI_method_set_opener(ui_method, ui_open);
501         UI_method_set_reader(ui_method, ui_read);
502         UI_method_set_writer(ui_method, ui_write);
503         UI_method_set_closer(ui_method, ui_close);
504         return 0;
505         }
506 void destroy_ui_method(void)
507         {
508         if(ui_method)
509                 {
510                 UI_destroy_method(ui_method);
511                 ui_method = NULL;
512                 }
513         }
514 int password_callback(char *buf, int bufsiz, int verify,
515         PW_CB_DATA *cb_tmp)
516         {
517         UI *ui = NULL;
518         int res = 0;
519         const char *prompt_info = NULL;
520         const char *password = NULL;
521         PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
522
523         if (cb_data)
524                 {
525                 if (cb_data->password)
526                         password = cb_data->password;
527                 if (cb_data->prompt_info)
528                         prompt_info = cb_data->prompt_info;
529                 }
530
531         if (password)
532                 {
533                 res = strlen(password);
534                 if (res > bufsiz)
535                         res = bufsiz;
536                 memcpy(buf, password, res);
537                 return res;
538                 }
539
540         ui = UI_new_method(ui_method);
541         if (ui)
542                 {
543                 int ok = 0;
544                 char *buff = NULL;
545                 int ui_flags = 0;
546                 char *prompt = NULL;
547
548                 prompt = UI_construct_prompt(ui, "pass phrase",
549                         cb_data->prompt_info);
550
551                 ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
552                 UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
553
554                 if (ok >= 0)
555                         ok = UI_add_input_string(ui,prompt,ui_flags,buf,
556                                 PW_MIN_LENGTH,BUFSIZ-1);
557                 if (ok >= 0 && verify)
558                         {
559                         buff = (char *)OPENSSL_malloc(bufsiz);
560                         ok = UI_add_verify_string(ui,prompt,ui_flags,buff,
561                                 PW_MIN_LENGTH,BUFSIZ-1, buf);
562                         }
563                 if (ok >= 0)
564                         do
565                                 {
566                                 ok = UI_process(ui);
567                                 }
568                         while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
569
570                 if (buff)
571                         {
572                         memset(buff,0,(unsigned int)bufsiz);
573                         OPENSSL_free(buff);
574                         }
575
576                 if (ok >= 0)
577                         res = strlen(buf);
578                 if (ok == -1)
579                         {
580                         BIO_printf(bio_err, "User interface error\n");
581                         ERR_print_errors(bio_err);
582                         memset(buf,0,(unsigned int)bufsiz);
583                         res = 0;
584                         }
585                 if (ok == -2)
586                         {
587                         BIO_printf(bio_err,"aborted!\n");
588                         memset(buf,0,(unsigned int)bufsiz);
589                         res = 0;
590                         }
591                 UI_free(ui);
592                 OPENSSL_free(prompt);
593                 }
594         return res;
595         }
596
597 static char *app_get_pass(BIO *err, char *arg, int keepbio);
598
599 int app_passwd(BIO *err, char *arg1, char *arg2, char **pass1, char **pass2)
600 {
601         int same;
602         if(!arg2 || !arg1 || strcmp(arg1, arg2)) same = 0;
603         else same = 1;
604         if(arg1) {
605                 *pass1 = app_get_pass(err, arg1, same);
606                 if(!*pass1) return 0;
607         } else if(pass1) *pass1 = NULL;
608         if(arg2) {
609                 *pass2 = app_get_pass(err, arg2, same ? 2 : 0);
610                 if(!*pass2) return 0;
611         } else if(pass2) *pass2 = NULL;
612         return 1;
613 }
614
615 static char *app_get_pass(BIO *err, char *arg, int keepbio)
616 {
617         char *tmp, tpass[APP_PASS_LEN];
618         static BIO *pwdbio = NULL;
619         int i;
620         if(!strncmp(arg, "pass:", 5)) return BUF_strdup(arg + 5);
621         if(!strncmp(arg, "env:", 4)) {
622                 tmp = getenv(arg + 4);
623                 if(!tmp) {
624                         BIO_printf(err, "Can't read environment variable %s\n", arg + 4);
625                         return NULL;
626                 }
627                 return BUF_strdup(tmp);
628         }
629         if(!keepbio || !pwdbio) {
630                 if(!strncmp(arg, "file:", 5)) {
631                         pwdbio = BIO_new_file(arg + 5, "r");
632                         if(!pwdbio) {
633                                 BIO_printf(err, "Can't open file %s\n", arg + 5);
634                                 return NULL;
635                         }
636                 } else if(!strncmp(arg, "fd:", 3)) {
637                         BIO *btmp;
638                         i = atoi(arg + 3);
639                         if(i >= 0) pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
640                         if((i < 0) || !pwdbio) {
641                                 BIO_printf(err, "Can't access file descriptor %s\n", arg + 3);
642                                 return NULL;
643                         }
644                         /* Can't do BIO_gets on an fd BIO so add a buffering BIO */
645                         btmp = BIO_new(BIO_f_buffer());
646                         pwdbio = BIO_push(btmp, pwdbio);
647                 } else if(!strcmp(arg, "stdin")) {
648                         pwdbio = BIO_new_fp(stdin, BIO_NOCLOSE);
649                         if(!pwdbio) {
650                                 BIO_printf(err, "Can't open BIO for stdin\n");
651                                 return NULL;
652                         }
653                 } else {
654                         BIO_printf(err, "Invalid password argument \"%s\"\n", arg);
655                         return NULL;
656                 }
657         }
658         i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
659         if(keepbio != 1) {
660                 BIO_free_all(pwdbio);
661                 pwdbio = NULL;
662         }
663         if(i <= 0) {
664                 BIO_printf(err, "Error reading password from BIO\n");
665                 return NULL;
666         }
667         tmp = strchr(tpass, '\n');
668         if(tmp) *tmp = 0;
669         return BUF_strdup(tpass);
670 }
671
672 int add_oid_section(BIO *err, CONF *conf)
673 {       
674         char *p;
675         STACK_OF(CONF_VALUE) *sktmp;
676         CONF_VALUE *cnf;
677         int i;
678         if(!(p=NCONF_get_string(conf,NULL,"oid_section")))
679                 {
680                 ERR_clear_error();
681                 return 1;
682                 }
683         if(!(sktmp = NCONF_get_section(conf, p))) {
684                 BIO_printf(err, "problem loading oid section %s\n", p);
685                 return 0;
686         }
687         for(i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
688                 cnf = sk_CONF_VALUE_value(sktmp, i);
689                 if(OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
690                         BIO_printf(err, "problem creating object %s=%s\n",
691                                                          cnf->name, cnf->value);
692                         return 0;
693                 }
694         }
695         return 1;
696 }
697
698 X509 *load_cert(BIO *err, const char *file, int format,
699         const char *pass, ENGINE *e, const char *cert_descrip)
700         {
701         ASN1_HEADER *ah=NULL;
702         BUF_MEM *buf=NULL;
703         X509 *x=NULL;
704         BIO *cert;
705
706         if ((cert=BIO_new(BIO_s_file())) == NULL)
707                 {
708                 ERR_print_errors(err);
709                 goto end;
710                 }
711
712         if (file == NULL)
713                 {
714                 setvbuf(stdin, NULL, _IONBF, 0);
715                 BIO_set_fp(cert,stdin,BIO_NOCLOSE);
716                 }
717         else
718                 {
719                 if (BIO_read_filename(cert,file) <= 0)
720                         {
721                         BIO_printf(err, "Error opening %s %s\n",
722                                 cert_descrip, file);
723                         ERR_print_errors(err);
724                         goto end;
725                         }
726                 }
727
728         if      (format == FORMAT_ASN1)
729                 x=d2i_X509_bio(cert,NULL);
730         else if (format == FORMAT_NETSCAPE)
731                 {
732                 unsigned char *p,*op;
733                 int size=0,i;
734
735                 /* We sort of have to do it this way because it is sort of nice
736                  * to read the header first and check it, then
737                  * try to read the certificate */
738                 buf=BUF_MEM_new();
739                 for (;;)
740                         {
741                         if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))
742                                 goto end;
743                         i=BIO_read(cert,&(buf->data[size]),1024*10);
744                         size+=i;
745                         if (i == 0) break;
746                         if (i < 0)
747                                 {
748                                 perror("reading certificate");
749                                 goto end;
750                                 }
751                         }
752                 p=(unsigned char *)buf->data;
753                 op=p;
754
755                 /* First load the header */
756                 if ((ah=d2i_ASN1_HEADER(NULL,&p,(long)size)) == NULL)
757                         goto end;
758                 if ((ah->header == NULL) || (ah->header->data == NULL) ||
759                         (strncmp(NETSCAPE_CERT_HDR,(char *)ah->header->data,
760                         ah->header->length) != 0))
761                         {
762                         BIO_printf(err,"Error reading header on certificate\n");
763                         goto end;
764                         }
765                 /* header is ok, so now read the object */
766                 p=op;
767                 ah->meth=X509_asn1_meth();
768                 if ((ah=d2i_ASN1_HEADER(&ah,&p,(long)size)) == NULL)
769                         goto end;
770                 x=(X509 *)ah->data;
771                 ah->data=NULL;
772                 }
773         else if (format == FORMAT_PEM)
774                 x=PEM_read_bio_X509_AUX(cert,NULL,
775                         (pem_password_cb *)password_callback, NULL);
776         else if (format == FORMAT_PKCS12)
777                 {
778                 PKCS12 *p12 = d2i_PKCS12_bio(cert, NULL);
779
780                 PKCS12_parse(p12, NULL, NULL, &x, NULL);
781                 PKCS12_free(p12);
782                 p12 = NULL;
783                 }
784         else    {
785                 BIO_printf(err,"bad input format specified for %s\n",
786                         cert_descrip);
787                 goto end;
788                 }
789 end:
790         if (x == NULL)
791                 {
792                 BIO_printf(err,"unable to load certificate\n");
793                 ERR_print_errors(err);
794                 }
795         if (ah != NULL) ASN1_HEADER_free(ah);
796         if (cert != NULL) BIO_free(cert);
797         if (buf != NULL) BUF_MEM_free(buf);
798         return(x);
799         }
800
801 EVP_PKEY *load_key(BIO *err, const char *file, int format,
802         const char *pass, ENGINE *e, const char *key_descrip)
803         {
804         BIO *key=NULL;
805         EVP_PKEY *pkey=NULL;
806         PW_CB_DATA cb_data;
807
808         cb_data.password = pass;
809         cb_data.prompt_info = file;
810
811         if (file == NULL)
812                 {
813                 BIO_printf(err,"no keyfile specified\n");
814                 goto end;
815                 }
816         if (format == FORMAT_ENGINE)
817                 {
818                 if (!e)
819                         BIO_printf(bio_err,"no engine specified\n");
820                 else
821                         pkey = ENGINE_load_private_key(e, file,
822                                 ui_method, &cb_data);
823                 goto end;
824                 }
825         key=BIO_new(BIO_s_file());
826         if (key == NULL)
827                 {
828                 ERR_print_errors(err);
829                 goto end;
830                 }
831         if (BIO_read_filename(key,file) <= 0)
832                 {
833                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
834                 ERR_print_errors(err);
835                 goto end;
836                 }
837         if (format == FORMAT_ASN1)
838                 {
839                 pkey=d2i_PrivateKey_bio(key, NULL);
840                 }
841         else if (format == FORMAT_PEM)
842                 {
843                 pkey=PEM_read_bio_PrivateKey(key,NULL,
844                         (pem_password_cb *)password_callback, &cb_data);
845                 }
846 #if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
847         else if (format == FORMAT_NETSCAPE || format == FORMAT_IISSGC)
848                 pkey = load_netscape_key(err, key, file, key_descrip, format);
849 #endif
850         else if (format == FORMAT_PKCS12)
851                 {
852                 PKCS12 *p12 = d2i_PKCS12_bio(key, NULL);
853
854                 PKCS12_parse(p12, pass, &pkey, NULL, NULL);
855                 PKCS12_free(p12);
856                 p12 = NULL;
857                 }
858         else
859                 {
860                 BIO_printf(err,"bad input format specified for key file\n");
861                 goto end;
862                 }
863  end:
864         if (key != NULL) BIO_free(key);
865         if (pkey == NULL)
866                 BIO_printf(err,"unable to load %s\n", key_descrip);
867         return(pkey);
868         }
869
870 EVP_PKEY *load_pubkey(BIO *err, const char *file, int format,
871         const char *pass, ENGINE *e, const char *key_descrip)
872         {
873         BIO *key=NULL;
874         EVP_PKEY *pkey=NULL;
875         PW_CB_DATA cb_data;
876
877         cb_data.password = pass;
878         cb_data.prompt_info = file;
879
880         if (file == NULL)
881                 {
882                 BIO_printf(err,"no keyfile specified\n");
883                 goto end;
884                 }
885         if (format == FORMAT_ENGINE)
886                 {
887                 if (!e)
888                         BIO_printf(bio_err,"no engine specified\n");
889                 else
890                         pkey = ENGINE_load_public_key(e, file,
891                                 ui_method, &cb_data);
892                 goto end;
893                 }
894         key=BIO_new(BIO_s_file());
895         if (key == NULL)
896                 {
897                 ERR_print_errors(err);
898                 goto end;
899                 }
900         if (BIO_read_filename(key,file) <= 0)
901                 {
902                 BIO_printf(err, "Error opening %s %s\n", key_descrip, file);
903                 ERR_print_errors(err);
904                 goto end;
905                 }
906         if (format == FORMAT_ASN1)
907                 {
908                 pkey=d2i_PUBKEY_bio(key, NULL);
909                 }
910         else if (format == FORMAT_PEM)
911                 {
912                 pkey=PEM_read_bio_PUBKEY(key,NULL,
913                         (pem_password_cb *)password_callback, &cb_data);
914                 }
915 #if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
916         else if (format == FORMAT_NETSCAPE || format == FORMAT_IISSGC)
917                 pkey = load_netscape_key(err, key, file, key_descrip, format);
918 #endif
919         else
920                 {
921                 BIO_printf(err,"bad input format specified for key file\n");
922                 goto end;
923                 }
924  end:
925         if (key != NULL) BIO_free(key);
926         if (pkey == NULL)
927                 BIO_printf(err,"unable to load %s\n", key_descrip);
928         return(pkey);
929         }
930
931 #if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
932 static EVP_PKEY *
933 load_netscape_key(BIO *err, BIO *key, const char *file,
934                 const char *key_descrip, int format)
935         {
936         EVP_PKEY *pkey;
937         BUF_MEM *buf;
938         RSA     *rsa;
939         const unsigned char *p;
940         int size, i;
941
942         buf=BUF_MEM_new();
943         pkey = EVP_PKEY_new();
944         size = 0;
945         if (buf == NULL || pkey == NULL)
946                 goto error;
947         for (;;)
948                 {
949                 if (!BUF_MEM_grow(buf,size+1024*10))
950                         goto error;
951                 i = BIO_read(key, &(buf->data[size]), 1024*10);
952                 size += i;
953                 if (i == 0)
954                         break;
955                 if (i < 0)
956                         {
957                                 BIO_printf(err, "Error reading %s %s",
958                                         key_descrip, file);
959                                 goto error;
960                         }
961                 }
962         p=(unsigned char *)buf->data;
963         rsa = d2i_RSA_NET(NULL,&p,(long)size,NULL,
964                 (format == FORMAT_IISSGC ? 1 : 0));
965         if (rsa == NULL)
966                 goto error;
967         BUF_MEM_free(buf);
968         EVP_PKEY_set1_RSA(pkey, rsa);
969         return pkey;
970 error:
971         BUF_MEM_free(buf);
972         EVP_PKEY_free(pkey);
973         return NULL;
974         }
975 #endif /* ndef OPENSSL_NO_RC4 */
976
977 STACK_OF(X509) *load_certs(BIO *err, const char *file, int format,
978         const char *pass, ENGINE *e, const char *cert_descrip)
979         {
980         BIO *certs;
981         int i;
982         STACK_OF(X509) *othercerts = NULL;
983         STACK_OF(X509_INFO) *allcerts = NULL;
984         X509_INFO *xi;
985         PW_CB_DATA cb_data;
986
987         cb_data.password = pass;
988         cb_data.prompt_info = file;
989
990         if((certs = BIO_new(BIO_s_file())) == NULL)
991                 {
992                 ERR_print_errors(err);
993                 goto end;
994                 }
995
996         if (file == NULL)
997                 BIO_set_fp(certs,stdin,BIO_NOCLOSE);
998         else
999                 {
1000                 if (BIO_read_filename(certs,file) <= 0)
1001                         {
1002                         BIO_printf(err, "Error opening %s %s\n",
1003                                 cert_descrip, file);
1004                         ERR_print_errors(err);
1005                         goto end;
1006                         }
1007                 }
1008
1009         if      (format == FORMAT_PEM)
1010                 {
1011                 othercerts = sk_X509_new_null();
1012                 if(!othercerts)
1013                         {
1014                         sk_X509_free(othercerts);
1015                         othercerts = NULL;
1016                         goto end;
1017                         }
1018                 allcerts = PEM_X509_INFO_read_bio(certs, NULL,
1019                                 (pem_password_cb *)password_callback, &cb_data);
1020                 for(i = 0; i < sk_X509_INFO_num(allcerts); i++)
1021                         {
1022                         xi = sk_X509_INFO_value (allcerts, i);
1023                         if (xi->x509)
1024                                 {
1025                                 sk_X509_push(othercerts, xi->x509);
1026                                 xi->x509 = NULL;
1027                                 }
1028                         }
1029                 goto end;
1030                 }
1031         else    {
1032                 BIO_printf(err,"bad input format specified for %s\n",
1033                         cert_descrip);
1034                 goto end;
1035                 }
1036 end:
1037         if (othercerts == NULL)
1038                 {
1039                 BIO_printf(err,"unable to load certificates\n");
1040                 ERR_print_errors(err);
1041                 }
1042         if (allcerts) sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
1043         if (certs != NULL) BIO_free(certs);
1044         return(othercerts);
1045         }
1046
1047
1048 #define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
1049 /* Return error for unknown extensions */
1050 #define X509V3_EXT_DEFAULT              0
1051 /* Print error for unknown extensions */
1052 #define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
1053 /* ASN1 parse unknown extensions */
1054 #define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
1055 /* BIO_dump unknown extensions */
1056 #define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
1057
1058 #define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
1059                          X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
1060
1061 int set_cert_ex(unsigned long *flags, const char *arg)
1062 {
1063         static const NAME_EX_TBL cert_tbl[] = {
1064                 { "compatible", X509_FLAG_COMPAT, 0xffffffffl},
1065                 { "ca_default", X509_FLAG_CA, 0xffffffffl},
1066                 { "no_header", X509_FLAG_NO_HEADER, 0},
1067                 { "no_version", X509_FLAG_NO_VERSION, 0},
1068                 { "no_serial", X509_FLAG_NO_SERIAL, 0},
1069                 { "no_signame", X509_FLAG_NO_SIGNAME, 0},
1070                 { "no_validity", X509_FLAG_NO_VALIDITY, 0},
1071                 { "no_subject", X509_FLAG_NO_SUBJECT, 0},
1072                 { "no_issuer", X509_FLAG_NO_ISSUER, 0},
1073                 { "no_pubkey", X509_FLAG_NO_PUBKEY, 0},
1074                 { "no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
1075                 { "no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
1076                 { "no_aux", X509_FLAG_NO_AUX, 0},
1077                 { "ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
1078                 { "ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1079                 { "ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1080                 { "ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1081                 { NULL, 0, 0}
1082         };
1083         return set_multi_opts(flags, arg, cert_tbl);
1084 }
1085
1086 int set_name_ex(unsigned long *flags, const char *arg)
1087 {
1088         static const NAME_EX_TBL ex_tbl[] = {
1089                 { "esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1090                 { "esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1091                 { "esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1092                 { "use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1093                 { "utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1094                 { "ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1095                 { "show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1096                 { "dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1097                 { "dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1098                 { "dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1099                 { "compat", XN_FLAG_COMPAT, 0xffffffffL},
1100                 { "sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1101                 { "sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1102                 { "sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1103                 { "sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1104                 { "dn_rev", XN_FLAG_DN_REV, 0},
1105                 { "nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1106                 { "sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1107                 { "lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1108                 { "align", XN_FLAG_FN_ALIGN, 0},
1109                 { "oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1110                 { "space_eq", XN_FLAG_SPC_EQ, 0},
1111                 { "dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1112                 { "RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1113                 { "oneline", XN_FLAG_ONELINE, 0xffffffffL},
1114                 { "multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1115                 { "ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1116                 { NULL, 0, 0}
1117         };
1118         return set_multi_opts(flags, arg, ex_tbl);
1119 }
1120
1121 int set_ext_copy(int *copy_type, const char *arg)
1122 {
1123         if (!strcasecmp(arg, "none"))
1124                 *copy_type = EXT_COPY_NONE;
1125         else if (!strcasecmp(arg, "copy"))
1126                 *copy_type = EXT_COPY_ADD;
1127         else if (!strcasecmp(arg, "copyall"))
1128                 *copy_type = EXT_COPY_ALL;
1129         else
1130                 return 0;
1131         return 1;
1132 }
1133
1134 int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1135 {
1136         STACK_OF(X509_EXTENSION) *exts = NULL;
1137         X509_EXTENSION *ext, *tmpext;
1138         ASN1_OBJECT *obj;
1139         int i, idx, ret = 0;
1140         if (!x || !req || (copy_type == EXT_COPY_NONE))
1141                 return 1;
1142         exts = X509_REQ_get_extensions(req);
1143
1144         for(i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1145                 ext = sk_X509_EXTENSION_value(exts, i);
1146                 obj = X509_EXTENSION_get_object(ext);
1147                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1148                 /* Does extension exist? */
1149                 if (idx != -1) {
1150                         /* If normal copy don't override existing extension */
1151                         if (copy_type == EXT_COPY_ADD)
1152                                 continue;
1153                         /* Delete all extensions of same type */
1154                         do {
1155                                 tmpext = X509_get_ext(x, idx);
1156                                 X509_delete_ext(x, idx);
1157                                 X509_EXTENSION_free(tmpext);
1158                                 idx = X509_get_ext_by_OBJ(x, obj, -1);
1159                         } while (idx != -1);
1160                 }
1161                 if (!X509_add_ext(x, ext, -1))
1162                         goto end;
1163         }
1164
1165         ret = 1;
1166
1167         end:
1168
1169         sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1170
1171         return ret;
1172 }
1173                 
1174                 
1175                         
1176
1177 static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1178 {
1179         STACK_OF(CONF_VALUE) *vals;
1180         CONF_VALUE *val;
1181         int i, ret = 1;
1182         if(!arg) return 0;
1183         vals = X509V3_parse_list(arg);
1184         for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1185                 val = sk_CONF_VALUE_value(vals, i);
1186                 if (!set_table_opts(flags, val->name, in_tbl))
1187                         ret = 0;
1188         }
1189         sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1190         return ret;
1191 }
1192
1193 static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl)
1194 {
1195         char c;
1196         const NAME_EX_TBL *ptbl;
1197         c = arg[0];
1198
1199         if(c == '-') {
1200                 c = 0;
1201                 arg++;
1202         } else if (c == '+') {
1203                 c = 1;
1204                 arg++;
1205         } else c = 1;
1206
1207         for(ptbl = in_tbl; ptbl->name; ptbl++) {
1208                 if(!strcasecmp(arg, ptbl->name)) {
1209                         *flags &= ~ptbl->mask;
1210                         if(c) *flags |= ptbl->flag;
1211                         else *flags &= ~ptbl->flag;
1212                         return 1;
1213                 }
1214         }
1215         return 0;
1216 }
1217
1218 void print_name(BIO *out, char *title, X509_NAME *nm, unsigned long lflags)
1219 {
1220         char *buf;
1221         char mline = 0;
1222         int indent = 0;
1223         if(title) BIO_puts(out, title);
1224         if((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1225                 mline = 1;
1226                 indent = 4;
1227         }
1228         if(lflags == XN_FLAG_COMPAT) {
1229                 buf = X509_NAME_oneline(nm, 0, 0);
1230                 BIO_puts(out, buf);
1231                 BIO_puts(out, "\n");
1232                 OPENSSL_free(buf);
1233         } else {
1234                 if(mline) BIO_puts(out, "\n");
1235                 X509_NAME_print_ex(out, nm, indent, lflags);
1236                 BIO_puts(out, "\n");
1237         }
1238 }
1239
1240 X509_STORE *setup_verify(BIO *bp, char *CAfile, char *CApath)
1241 {
1242         X509_STORE *store;
1243         X509_LOOKUP *lookup;
1244         if(!(store = X509_STORE_new())) goto end;
1245         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
1246         if (lookup == NULL) goto end;
1247         if (CAfile) {
1248                 if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
1249                         BIO_printf(bp, "Error loading file %s\n", CAfile);
1250                         goto end;
1251                 }
1252         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
1253                 
1254         lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
1255         if (lookup == NULL) goto end;
1256         if (CApath) {
1257                 if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
1258                         BIO_printf(bp, "Error loading directory %s\n", CApath);
1259                         goto end;
1260                 }
1261         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
1262
1263         ERR_clear_error();
1264         return store;
1265         end:
1266         X509_STORE_free(store);
1267         return NULL;
1268 }
1269
1270 /* Try to load an engine in a shareable library */
1271 static ENGINE *try_load_engine(BIO *err, const char *engine, int debug)
1272         {
1273         ENGINE *e = ENGINE_by_id("dynamic");
1274         if (e)
1275                 {
1276                 if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1277                         || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
1278                         {
1279                         ENGINE_free(e);
1280                         e = NULL;
1281                         }
1282                 }
1283         return e;
1284         }
1285
1286 ENGINE *setup_engine(BIO *err, const char *engine, int debug)
1287         {
1288         ENGINE *e = NULL;
1289
1290         if (engine)
1291                 {
1292                 if(strcmp(engine, "auto") == 0)
1293                         {
1294                         BIO_printf(err,"enabling auto ENGINE support\n");
1295                         ENGINE_register_all_complete();
1296                         return NULL;
1297                         }
1298                 if((e = ENGINE_by_id(engine)) == NULL
1299                         && (e = try_load_engine(err, engine, debug)) == NULL)
1300                         {
1301                         BIO_printf(err,"invalid engine \"%s\"\n", engine);
1302                         ERR_print_errors(err);
1303                         return NULL;
1304                         }
1305                 if (debug)
1306                         {
1307                         ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM,
1308                                 0, err, 0);
1309                         }
1310                 ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1311                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
1312                         {
1313                         BIO_printf(err,"can't use that engine\n");
1314                         ERR_print_errors(err);
1315                         ENGINE_free(e);
1316                         return NULL;
1317                         }
1318
1319                 BIO_printf(err,"engine \"%s\" set.\n", ENGINE_get_id(e));
1320
1321                 /* Free our "structural" reference. */
1322                 ENGINE_free(e);
1323                 }
1324         return e;
1325         }
1326
1327 int load_config(BIO *err, CONF *cnf)
1328         {
1329         if (!cnf)
1330                 cnf = config;
1331         if (!cnf)
1332                 return 1;
1333
1334         OPENSSL_load_builtin_modules();
1335
1336         if (CONF_modules_load(cnf, NULL, 0) <= 0)
1337                 {
1338                 BIO_printf(err, "Error configuring OpenSSL\n");
1339                 ERR_print_errors(err);
1340                 return 0;
1341                 }
1342         return 1;
1343         }