Make it possible for users of the openssl applications to specify the
[openssl.git] / apps / req.c
1 /* apps/req.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <time.h>
62 #include <string.h>
63 #ifdef NO_STDIO
64 #define APPS_WIN16
65 #endif
66 #include "apps.h"
67 #include <openssl/bio.h>
68 #include <openssl/evp.h>
69 #include <openssl/conf.h>
70 #include <openssl/err.h>
71 #include <openssl/asn1.h>
72 #include <openssl/x509.h>
73 #include <openssl/x509v3.h>
74 #include <openssl/objects.h>
75 #include <openssl/pem.h>
76
77 #define SECTION         "req"
78
79 #define BITS            "default_bits"
80 #define KEYFILE         "default_keyfile"
81 #define PROMPT          "prompt"
82 #define DISTINGUISHED_NAME      "distinguished_name"
83 #define ATTRIBUTES      "attributes"
84 #define V3_EXTENSIONS   "x509_extensions"
85 #define REQ_EXTENSIONS  "req_extensions"
86 #define STRING_MASK     "string_mask"
87
88 #define DEFAULT_KEY_LENGTH      512
89 #define MIN_KEY_LENGTH          384
90
91 #undef PROG
92 #define PROG    req_main
93
94 /* -inform arg  - input format - default PEM (DER or PEM)
95  * -outform arg - output format - default PEM
96  * -in arg      - input file - default stdin
97  * -out arg     - output file - default stdout
98  * -verify      - check request signature
99  * -noout       - don't print stuff out.
100  * -text        - print out human readable text.
101  * -nodes       - no des encryption
102  * -config file - Load configuration file.
103  * -key file    - make a request using key in file (or use it for verification).
104  * -keyform     - key file format.
105  * -rand file(s) - load the file(s) into the PRNG.
106  * -egd file    - load PRNG seed from EGD named socket.
107  * -newkey      - make a key and a request.
108  * -modulus     - print RSA modulus.
109  * -x509        - output a self signed X509 structure instead.
110  * -asn1-kludge - output new certificate request in a format that some CA's
111  *                require.  This format is wrong
112  */
113
114 static int make_REQ(X509_REQ *req,EVP_PKEY *pkey,int attribs);
115 static int prompt_info(X509_REQ *req,
116                 STACK_OF(CONF_VALUE) *dn_sk, char *dn_sect,
117                 STACK_OF(CONF_VALUE) *attr_sk, char *attr_sect, int attribs);
118 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
119                                 STACK_OF(CONF_VALUE) *attr, int attribs);
120 static int add_attribute_object(X509_REQ *req, char *text,
121                                 char *def, char *value, int nid, int min,
122                                 int max);
123 static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
124         int nid,int min,int max);
125 #ifndef NO_RSA
126 static void MS_CALLBACK req_cb(int p,int n,void *arg);
127 #endif
128 static int req_check_len(int len,int min,int max);
129 static int check_end(char *str, char *end);
130 #ifndef MONOLITH
131 static char *default_config_file=NULL;
132 static LHASH *config=NULL;
133 #endif
134 static LHASH *req_conf=NULL;
135
136 #define TYPE_RSA        1
137 #define TYPE_DSA        2
138 #define TYPE_DH         3
139
140 int MAIN(int, char **);
141
142 int MAIN(int argc, char **argv)
143         {
144 #ifndef NO_DSA
145         DSA *dsa_params=NULL;
146 #endif
147         int ex=1,x509=0,days=30;
148         X509 *x509ss=NULL;
149         X509_REQ *req=NULL;
150         EVP_PKEY *pkey=NULL;
151         int i,badops=0,newreq=0,newkey= -1,pkey_type=0;
152         BIO *in=NULL,*out=NULL;
153         int informat,outformat,verify=0,noout=0,text=0,keyform=FORMAT_PEM;
154         int nodes=0,kludge=0,newhdr=0;
155         char *infile,*outfile,*prog,*keyfile=NULL,*template=NULL,*keyout=NULL;
156         char *extensions = NULL;
157         char *req_exts = NULL;
158         EVP_CIPHER *cipher=NULL;
159         int modulus=0;
160         char *inrand=NULL,*inegd=NULL;
161         char *passargin = NULL, *passargout = NULL;
162         char *passin = NULL, *passout = NULL;
163         char *p;
164         const EVP_MD *md_alg=NULL,*digest=EVP_md5();
165 #ifndef MONOLITH
166         MS_STATIC char config_name[256];
167 #endif
168
169         req_conf = NULL;
170 #ifndef NO_DES
171         cipher=EVP_des_ede3_cbc();
172 #endif
173         apps_startup();
174
175         if (bio_err == NULL)
176                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
177                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
178
179         infile=NULL;
180         outfile=NULL;
181         informat=FORMAT_PEM;
182         outformat=FORMAT_PEM;
183
184         prog=argv[0];
185         argc--;
186         argv++;
187         while (argc >= 1)
188                 {
189                 if      (strcmp(*argv,"-inform") == 0)
190                         {
191                         if (--argc < 1) goto bad;
192                         informat=str2fmt(*(++argv));
193                         }
194                 else if (strcmp(*argv,"-outform") == 0)
195                         {
196                         if (--argc < 1) goto bad;
197                         outformat=str2fmt(*(++argv));
198                         }
199                 else if (strcmp(*argv,"-key") == 0)
200                         {
201                         if (--argc < 1) goto bad;
202                         keyfile= *(++argv);
203                         }
204                 else if (strcmp(*argv,"-new") == 0)
205                         {
206                         pkey_type=TYPE_RSA;
207                         newreq=1;
208                         }
209                 else if (strcmp(*argv,"-config") == 0)
210                         {       
211                         if (--argc < 1) goto bad;
212                         template= *(++argv);
213                         }
214                 else if (strcmp(*argv,"-keyform") == 0)
215                         {
216                         if (--argc < 1) goto bad;
217                         keyform=str2fmt(*(++argv));
218                         }
219                 else if (strcmp(*argv,"-in") == 0)
220                         {
221                         if (--argc < 1) goto bad;
222                         infile= *(++argv);
223                         }
224                 else if (strcmp(*argv,"-out") == 0)
225                         {
226                         if (--argc < 1) goto bad;
227                         outfile= *(++argv);
228                         }
229                 else if (strcmp(*argv,"-keyout") == 0)
230                         {
231                         if (--argc < 1) goto bad;
232                         keyout= *(++argv);
233                         }
234                 else if (strcmp(*argv,"-passin") == 0)
235                         {
236                         if (--argc < 1) goto bad;
237                         passargin= *(++argv);
238                         }
239                 else if (strcmp(*argv,"-passout") == 0)
240                         {
241                         if (--argc < 1) goto bad;
242                         passargout= *(++argv);
243                         }
244                 else if (strcmp(*argv,"-rand") == 0)
245                         {
246                         if (--argc < 1) goto bad;
247                         inrand= *(++argv);
248                         }
249                 else if (strcmp(*argv,"-egd") == 0)
250                         {
251                         if (--argc < 1) goto bad;
252                         inegd= *(++argv);
253                         }
254                 else if (strcmp(*argv,"-newkey") == 0)
255                         {
256                         int is_numeric;
257
258                         if (--argc < 1) goto bad;
259                         p= *(++argv);
260                         is_numeric = p[0] >= '0' && p[0] <= '9';
261                         if (strncmp("rsa:",p,4) == 0 || is_numeric)
262                                 {
263                                 pkey_type=TYPE_RSA;
264                                 if(!is_numeric)
265                                     p+=4;
266                                 newkey= atoi(p);
267                                 }
268                         else
269 #ifndef NO_DSA
270                                 if (strncmp("dsa:",p,4) == 0)
271                                 {
272                                 X509 *xtmp=NULL;
273                                 EVP_PKEY *dtmp;
274
275                                 pkey_type=TYPE_DSA;
276                                 p+=4;
277                                 if ((in=BIO_new_file(p,"r")) == NULL)
278                                         {
279                                         perror(p);
280                                         goto end;
281                                         }
282                                 if ((dsa_params=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
283                                         {
284                                         ERR_clear_error();
285                                         (void)BIO_reset(in);
286                                         if ((xtmp=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL)
287                                                 {
288                                                 BIO_printf(bio_err,"unable to load DSA parameters from file\n");
289                                                 goto end;
290                                                 }
291
292                                         dtmp=X509_get_pubkey(xtmp);
293                                         if (dtmp->type == EVP_PKEY_DSA)
294                                                 dsa_params=DSAparams_dup(dtmp->pkey.dsa);
295                                         EVP_PKEY_free(dtmp);
296                                         X509_free(xtmp);
297                                         if (dsa_params == NULL)
298                                                 {
299                                                 BIO_printf(bio_err,"Certificate does not contain DSA parameters\n");
300                                                 goto end;
301                                                 }
302                                         }
303                                 BIO_free(in);
304                                 newkey=BN_num_bits(dsa_params->p);
305                                 in=NULL;
306                                 }
307                         else 
308 #endif
309 #ifndef NO_DH
310                                 if (strncmp("dh:",p,4) == 0)
311                                 {
312                                 pkey_type=TYPE_DH;
313                                 p+=3;
314                                 }
315                         else
316 #endif
317                                 pkey_type=TYPE_RSA;
318
319                         newreq=1;
320                         }
321                 else if (strcmp(*argv,"-newhdr") == 0)
322                         newhdr=1;
323                 else if (strcmp(*argv,"-modulus") == 0)
324                         modulus=1;
325                 else if (strcmp(*argv,"-verify") == 0)
326                         verify=1;
327                 else if (strcmp(*argv,"-nodes") == 0)
328                         nodes=1;
329                 else if (strcmp(*argv,"-noout") == 0)
330                         noout=1;
331                 else if (strcmp(*argv,"-text") == 0)
332                         text=1;
333                 else if (strcmp(*argv,"-x509") == 0)
334                         x509=1;
335                 else if (strcmp(*argv,"-asn1-kludge") == 0)
336                         kludge=1;
337                 else if (strcmp(*argv,"-no-asn1-kludge") == 0)
338                         kludge=0;
339                 else if (strcmp(*argv,"-days") == 0)
340                         {
341                         if (--argc < 1) goto bad;
342                         days= atoi(*(++argv));
343                         if (days == 0) days=30;
344                         }
345                 else if ((md_alg=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
346                         {
347                         /* ok */
348                         digest=md_alg;
349                         }
350                 else if (strcmp(*argv,"-extensions") == 0)
351                         {
352                         if (--argc < 1) goto bad;
353                         extensions = *(++argv);
354                         }
355                 else if (strcmp(*argv,"-reqexts") == 0)
356                         {
357                         if (--argc < 1) goto bad;
358                         req_exts = *(++argv);
359                         }
360                 else
361                         {
362                         BIO_printf(bio_err,"unknown option %s\n",*argv);
363                         badops=1;
364                         break;
365                         }
366                 argc--;
367                 argv++;
368                 }
369
370         if (badops)
371                 {
372 bad:
373                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
374                 BIO_printf(bio_err,"where options  are\n");
375                 BIO_printf(bio_err," -inform arg    input format - DER or PEM\n");
376                 BIO_printf(bio_err," -outform arg   output format - DER or PEM\n");
377                 BIO_printf(bio_err," -in arg        input file\n");
378                 BIO_printf(bio_err," -out arg       output file\n");
379                 BIO_printf(bio_err," -text          text form of request\n");
380                 BIO_printf(bio_err," -noout         do not output REQ\n");
381                 BIO_printf(bio_err," -verify        verify signature on REQ\n");
382                 BIO_printf(bio_err," -modulus       RSA modulus\n");
383                 BIO_printf(bio_err," -nodes         don't encrypt the output key\n");
384                 BIO_printf(bio_err," -key file  use the private key contained in file\n");
385                 BIO_printf(bio_err," -keyform arg   key file format\n");
386                 BIO_printf(bio_err," -keyout arg    file to send the key to\n");
387                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
388                 BIO_printf(bio_err,"                load the file (or the files in the directory) into\n");
389                 BIO_printf(bio_err,"                the random number generator\n");
390                 BIO_printf(bio_err," -egd file      load random seed from EGD socket\n");
391                 BIO_printf(bio_err," -newkey rsa:bits generate a new RSA key of 'bits' in size\n");
392                 BIO_printf(bio_err," -newkey dsa:file generate a new DSA key, parameters taken from CA in 'file'\n");
393
394                 BIO_printf(bio_err," -[digest]      Digest to sign with (md5, sha1, md2, mdc2)\n");
395                 BIO_printf(bio_err," -config file   request template file.\n");
396                 BIO_printf(bio_err," -new           new request.\n");
397                 BIO_printf(bio_err," -x509          output a x509 structure instead of a cert. req.\n");
398                 BIO_printf(bio_err," -days          number of days a x509 generated by -x509 is valid for.\n");
399                 BIO_printf(bio_err," -newhdr        output \"NEW\" in the header lines\n");
400                 BIO_printf(bio_err," -asn1-kludge   Output the 'request' in a format that is wrong but some CA's\n");
401                 BIO_printf(bio_err,"                have been reported as requiring\n");
402                 BIO_printf(bio_err," -extensions .. specify certificate extension section (override value in config file)\n");
403                 BIO_printf(bio_err," -reqexts ..    specify request extension section (override value in config file)\n");
404                 goto end;
405                 }
406
407         ERR_load_crypto_strings();
408         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
409                 BIO_printf(bio_err, "Error getting passwords\n");
410                 goto end;
411         }
412
413 #ifndef MONOLITH /* else this has happened in openssl.c (global `config') */
414         /* Lets load up our environment a little */
415         p=getenv("OPENSSL_CONF");
416         if (p == NULL)
417                 p=getenv("SSLEAY_CONF");
418         if (p == NULL)
419                 {
420                 strcpy(config_name,X509_get_default_cert_area());
421 #ifndef VMS
422                 strcat(config_name,"/");
423 #endif
424                 strcat(config_name,OPENSSL_CONF);
425                 p=config_name;
426                 }
427         default_config_file=p;
428         config=CONF_load(config,p,NULL);
429 #endif
430
431         if (template != NULL)
432                 {
433                 long errline;
434
435                 BIO_printf(bio_err,"Using configuration from %s\n",template);
436                 req_conf=CONF_load(NULL,template,&errline);
437                 if (req_conf == NULL)
438                         {
439                         BIO_printf(bio_err,"error on line %ld of %s\n",errline,template);
440                         goto end;
441                         }
442                 }
443         else
444                 {
445                 req_conf=config;
446                 BIO_printf(bio_err,"Using configuration from %s\n",
447                         default_config_file);
448                 if (req_conf == NULL)
449                         {
450                         BIO_printf(bio_err,"Unable to load config info\n");
451                         }
452                 }
453
454         if (req_conf != NULL)
455                 {
456                 p=CONF_get_string(req_conf,NULL,"oid_file");
457                 if (p != NULL)
458                         {
459                         BIO *oid_bio;
460
461                         oid_bio=BIO_new_file(p,"r");
462                         if (oid_bio == NULL) 
463                                 {
464                                 /*
465                                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
466                                 ERR_print_errors(bio_err);
467                                 */
468                                 }
469                         else
470                                 {
471                                 OBJ_create_objects(oid_bio);
472                                 BIO_free(oid_bio);
473                                 }
474                         }
475                 }
476                 if(!add_oid_section(bio_err, req_conf)) goto end;
477
478         if ((md_alg == NULL) &&
479                 ((p=CONF_get_string(req_conf,SECTION,"default_md")) != NULL))
480                 {
481                 if ((md_alg=EVP_get_digestbyname(p)) != NULL)
482                         digest=md_alg;
483                 }
484
485         if(!extensions)
486                 extensions = CONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
487         if(extensions) {
488                 /* Check syntax of file */
489                 X509V3_CTX ctx;
490                 X509V3_set_ctx_test(&ctx);
491                 X509V3_set_conf_lhash(&ctx, req_conf);
492                 if(!X509V3_EXT_add_conf(req_conf, &ctx, extensions, NULL)) {
493                         BIO_printf(bio_err,
494                          "Error Loading extension section %s\n", extensions);
495                         goto end;
496                 }
497         }
498
499         if(!passin)
500                 passin = CONF_get_string(req_conf, SECTION, "input_password");
501
502         if(!passout)
503                 passout = CONF_get_string(req_conf, SECTION, "output_password");
504
505         p = CONF_get_string(req_conf, SECTION, STRING_MASK);
506
507         if(p && !ASN1_STRING_set_default_mask_asc(p)) {
508                 BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
509                 goto end;
510         }
511
512         if(!req_exts)
513                 req_exts = CONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
514         if(req_exts) {
515                 /* Check syntax of file */
516                 X509V3_CTX ctx;
517                 X509V3_set_ctx_test(&ctx);
518                 X509V3_set_conf_lhash(&ctx, req_conf);
519                 if(!X509V3_EXT_add_conf(req_conf, &ctx, req_exts, NULL)) {
520                         BIO_printf(bio_err,
521                          "Error Loading request extension section %s\n",
522                                                                 req_exts);
523                         goto end;
524                 }
525         }
526
527         in=BIO_new(BIO_s_file());
528         out=BIO_new(BIO_s_file());
529         if ((in == NULL) || (out == NULL))
530                 goto end;
531
532         if (keyfile != NULL)
533                 {
534                 if (BIO_read_filename(in,keyfile) <= 0)
535                         {
536                         perror(keyfile);
537                         goto end;
538                         }
539
540                 if (keyform == FORMAT_ASN1)
541                         pkey=d2i_PrivateKey_bio(in,NULL);
542                 else if (keyform == FORMAT_PEM)
543                         {
544                         pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,passin);
545                         }
546                 else
547                         {
548                         BIO_printf(bio_err,"bad input format specified for X509 request\n");
549                         goto end;
550                         }
551
552                 if (pkey == NULL)
553                         {
554                         BIO_printf(bio_err,"unable to load Private key\n");
555                         goto end;
556                         }
557                 }
558
559         if (newreq && (pkey == NULL))
560                 {
561                 char *randfile = CONF_get_string(req_conf,SECTION,"RANDFILE");
562                 app_RAND_load_file(randfile, bio_err, 0);
563                 if (inrand)
564                         app_RAND_load_files(inrand);
565                 if (inegd)
566                         RAND_egd(inegd);
567
568                 if (newkey <= 0)
569                         {
570                         newkey=(int)CONF_get_number(req_conf,SECTION,BITS);
571                         if (newkey <= 0)
572                                 newkey=DEFAULT_KEY_LENGTH;
573                         }
574
575                 if (newkey < MIN_KEY_LENGTH)
576                         {
577                         BIO_printf(bio_err,"private key length is too short,\n");
578                         BIO_printf(bio_err,"it needs to be at least %d bits, not %d\n",MIN_KEY_LENGTH,newkey);
579                         goto end;
580                         }
581                 BIO_printf(bio_err,"Generating a %d bit %s private key\n",
582                         newkey,(pkey_type == TYPE_RSA)?"RSA":"DSA");
583
584                 if ((pkey=EVP_PKEY_new()) == NULL) goto end;
585
586 #ifndef NO_RSA
587                 if (pkey_type == TYPE_RSA)
588                         {
589                         if (!EVP_PKEY_assign_RSA(pkey,
590                                 RSA_generate_key(newkey,0x10001,
591                                         req_cb,bio_err)))
592                                 goto end;
593                         }
594                 else
595 #endif
596 #ifndef NO_DSA
597                         if (pkey_type == TYPE_DSA)
598                         {
599                         if (!DSA_generate_key(dsa_params)) goto end;
600                         if (!EVP_PKEY_assign_DSA(pkey,dsa_params)) goto end;
601                         dsa_params=NULL;
602                         }
603 #endif
604
605                 app_RAND_write_file(randfile, bio_err);
606
607                 if (pkey == NULL) goto end;
608
609                 if (keyout == NULL)
610                         keyout=CONF_get_string(req_conf,SECTION,KEYFILE);
611
612                 if (keyout == NULL)
613                         {
614                         BIO_printf(bio_err,"writing new private key to stdout\n");
615                         BIO_set_fp(out,stdout,BIO_NOCLOSE);
616                         }
617                 else
618                         {
619                         BIO_printf(bio_err,"writing new private key to '%s'\n",keyout);
620                         if (BIO_write_filename(out,keyout) <= 0)
621                                 {
622                                 perror(keyout);
623                                 goto end;
624                                 }
625                         }
626
627                 p=CONF_get_string(req_conf,SECTION,"encrypt_rsa_key");
628                 if (p == NULL)
629                         p=CONF_get_string(req_conf,SECTION,"encrypt_key");
630                 if ((p != NULL) && (strcmp(p,"no") == 0))
631                         cipher=NULL;
632                 if (nodes) cipher=NULL;
633                 
634                 i=0;
635 loop:
636                 if (!PEM_write_bio_PrivateKey(out,pkey,cipher,
637                         NULL,0,NULL,passout))
638                         {
639                         if ((ERR_GET_REASON(ERR_peek_error()) ==
640                                 PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3))
641                                 {
642                                 ERR_clear_error();
643                                 i++;
644                                 goto loop;
645                                 }
646                         goto end;
647                         }
648                 BIO_printf(bio_err,"-----\n");
649                 }
650
651         if (!newreq)
652                 {
653                 /* Since we are using a pre-existing certificate
654                  * request, the kludge 'format' info should not be
655                  * changed. */
656                 kludge= -1;
657                 if (infile == NULL)
658                         BIO_set_fp(in,stdin,BIO_NOCLOSE);
659                 else
660                         {
661                         if (BIO_read_filename(in,infile) <= 0)
662                                 {
663                                 perror(infile);
664                                 goto end;
665                                 }
666                         }
667
668                 if      (informat == FORMAT_ASN1)
669                         req=d2i_X509_REQ_bio(in,NULL);
670                 else if (informat == FORMAT_PEM)
671                         req=PEM_read_bio_X509_REQ(in,NULL,NULL,NULL);
672                 else
673                         {
674                         BIO_printf(bio_err,"bad input format specified for X509 request\n");
675                         goto end;
676                         }
677                 if (req == NULL)
678                         {
679                         BIO_printf(bio_err,"unable to load X509 request\n");
680                         goto end;
681                         }
682                 }
683
684         if (newreq || x509)
685                 {
686 #ifndef NO_DSA
687                 if (pkey->type == EVP_PKEY_DSA)
688                         digest=EVP_dss1();
689 #endif
690
691                 if (pkey == NULL)
692                         {
693                         BIO_printf(bio_err,"you need to specify a private key\n");
694                         goto end;
695                         }
696                 if (req == NULL)
697                         {
698                         req=X509_REQ_new();
699                         if (req == NULL)
700                                 {
701                                 goto end;
702                                 }
703
704                         i=make_REQ(req,pkey,!x509);
705                         if (kludge >= 0)
706                                 req->req_info->req_kludge=kludge;
707                         if (!i)
708                                 {
709                                 BIO_printf(bio_err,"problems making Certificate Request\n");
710                                 goto end;
711                                 }
712                         }
713                 if (x509)
714                         {
715                         EVP_PKEY *tmppkey;
716                         X509V3_CTX ext_ctx;
717                         if ((x509ss=X509_new()) == NULL) goto end;
718
719                         /* Set version to V3 */
720                         if(!X509_set_version(x509ss, 2)) goto end;
721                         ASN1_INTEGER_set(X509_get_serialNumber(x509ss),0L);
722
723                         X509_set_issuer_name(x509ss,
724                                 X509_REQ_get_subject_name(req));
725                         X509_gmtime_adj(X509_get_notBefore(x509ss),0);
726                         X509_gmtime_adj(X509_get_notAfter(x509ss),
727                                 (long)60*60*24*days);
728                         X509_set_subject_name(x509ss,
729                                 X509_REQ_get_subject_name(req));
730                         tmppkey = X509_REQ_get_pubkey(req);
731                         X509_set_pubkey(x509ss,tmppkey);
732                         EVP_PKEY_free(tmppkey);
733
734                         /* Set up V3 context struct */
735
736                         X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
737                         X509V3_set_conf_lhash(&ext_ctx, req_conf);
738
739                         /* Add extensions */
740                         if(extensions && !X509V3_EXT_add_conf(req_conf, 
741                                         &ext_ctx, extensions, x509ss))
742                             {
743                             BIO_printf(bio_err,
744                                        "Error Loading extension section %s\n",
745                                        extensions);
746                             goto end;
747                             }
748
749                         if (!(i=X509_sign(x509ss,pkey,digest)))
750                                 goto end;
751                         }
752                 else
753                         {
754                         X509V3_CTX ext_ctx;
755
756                         /* Set up V3 context struct */
757
758                         X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
759                         X509V3_set_conf_lhash(&ext_ctx, req_conf);
760
761                         /* Add extensions */
762                         if(req_exts && !X509V3_EXT_REQ_add_conf(req_conf, 
763                                         &ext_ctx, req_exts, req))
764                             {
765                             BIO_printf(bio_err,
766                                        "Error Loading extension section %s\n",
767                                        req_exts);
768                             goto end;
769                             }
770                         if (!(i=X509_REQ_sign(req,pkey,digest)))
771                                 goto end;
772                         }
773                 }
774
775         if (verify && !x509)
776                 {
777                 int tmp=0;
778
779                 if (pkey == NULL)
780                         {
781                         pkey=X509_REQ_get_pubkey(req);
782                         tmp=1;
783                         if (pkey == NULL) goto end;
784                         }
785
786                 i=X509_REQ_verify(req,pkey);
787                 if (tmp) {
788                         EVP_PKEY_free(pkey);
789                         pkey=NULL;
790                 }
791
792                 if (i < 0)
793                         {
794                         goto end;
795                         }
796                 else if (i == 0)
797                         {
798                         BIO_printf(bio_err,"verify failure\n");
799                         }
800                 else /* if (i > 0) */
801                         BIO_printf(bio_err,"verify OK\n");
802                 }
803
804         if (noout && !text && !modulus)
805                 {
806                 ex=0;
807                 goto end;
808                 }
809
810         if (outfile == NULL)
811                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
812         else
813                 {
814                 if ((keyout != NULL) && (strcmp(outfile,keyout) == 0))
815                         i=(int)BIO_append_filename(out,outfile);
816                 else
817                         i=(int)BIO_write_filename(out,outfile);
818                 if (!i)
819                         {
820                         perror(outfile);
821                         goto end;
822                         }
823                 }
824
825         if (text)
826                 {
827                 if (x509)
828                         X509_print(out,x509ss);
829                 else    
830                         X509_REQ_print(out,req);
831                 }
832
833         if (modulus)
834                 {
835                 EVP_PKEY *pubkey;
836
837                 if (x509)
838                         pubkey=X509_get_pubkey(x509ss);
839                 else
840                         pubkey=X509_REQ_get_pubkey(req);
841                 if (pubkey == NULL)
842                         {
843                         fprintf(stdout,"Modulus=unavailable\n");
844                         goto end; 
845                         }
846                 fprintf(stdout,"Modulus=");
847 #ifndef NO_RSA
848                 if (pubkey->type == EVP_PKEY_RSA)
849                         BN_print(out,pubkey->pkey.rsa->n);
850                 else
851 #endif
852                         fprintf(stdout,"Wrong Algorithm type");
853                 fprintf(stdout,"\n");
854                 }
855
856         if (!noout && !x509)
857                 {
858                 if      (outformat == FORMAT_ASN1)
859                         i=i2d_X509_REQ_bio(out,req);
860                 else if (outformat == FORMAT_PEM) {
861                         if(newhdr) i=PEM_write_bio_X509_REQ_NEW(out,req);
862                         else i=PEM_write_bio_X509_REQ(out,req);
863                 } else {
864                         BIO_printf(bio_err,"bad output format specified for outfile\n");
865                         goto end;
866                         }
867                 if (!i)
868                         {
869                         BIO_printf(bio_err,"unable to write X509 request\n");
870                         goto end;
871                         }
872                 }
873         if (!noout && x509 && (x509ss != NULL))
874                 {
875                 if      (outformat == FORMAT_ASN1)
876                         i=i2d_X509_bio(out,x509ss);
877                 else if (outformat == FORMAT_PEM)
878                         i=PEM_write_bio_X509(out,x509ss);
879                 else    {
880                         BIO_printf(bio_err,"bad output format specified for outfile\n");
881                         goto end;
882                         }
883                 if (!i)
884                         {
885                         BIO_printf(bio_err,"unable to write X509 certificate\n");
886                         goto end;
887                         }
888                 }
889         ex=0;
890 end:
891         if (ex)
892                 {
893                 ERR_print_errors(bio_err);
894                 }
895         if ((req_conf != NULL) && (req_conf != config)) CONF_free(req_conf);
896         BIO_free(in);
897         BIO_free(out);
898         EVP_PKEY_free(pkey);
899         X509_REQ_free(req);
900         X509_free(x509ss);
901         if(passargin && passin) OPENSSL_free(passin);
902         if(passargout && passout) OPENSSL_free(passout);
903         OBJ_cleanup();
904 #ifndef NO_DSA
905         if (dsa_params != NULL) DSA_free(dsa_params);
906 #endif
907         EXIT(ex);
908         }
909
910 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, int attribs)
911         {
912         int ret=0,i;
913         char no_prompt = 0;
914         STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
915         char *tmp, *dn_sect,*attr_sect;
916
917         tmp=CONF_get_string(req_conf,SECTION,PROMPT);
918         if((tmp != NULL) && !strcmp(tmp, "no")) no_prompt = 1;
919
920         dn_sect=CONF_get_string(req_conf,SECTION,DISTINGUISHED_NAME);
921         if (dn_sect == NULL)
922                 {
923                 BIO_printf(bio_err,"unable to find '%s' in config\n",
924                         DISTINGUISHED_NAME);
925                 goto err;
926                 }
927         dn_sk=CONF_get_section(req_conf,dn_sect);
928         if (dn_sk == NULL)
929                 {
930                 BIO_printf(bio_err,"unable to get '%s' section\n",dn_sect);
931                 goto err;
932                 }
933
934         attr_sect=CONF_get_string(req_conf,SECTION,ATTRIBUTES);
935         if (attr_sect == NULL)
936                 attr_sk=NULL;
937         else
938                 {
939                 attr_sk=CONF_get_section(req_conf,attr_sect);
940                 if (attr_sk == NULL)
941                         {
942                         BIO_printf(bio_err,"unable to get '%s' section\n",attr_sect);
943                         goto err;
944                         }
945                 }
946
947         /* setup version number */
948         if (!X509_REQ_set_version(req,0L)) goto err; /* version 1 */
949
950         if(no_prompt) i = auto_info(req, dn_sk, attr_sk, attribs);
951         else i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs);
952         if(!i) goto err;
953
954         X509_REQ_set_pubkey(req,pkey);
955
956         ret=1;
957 err:
958         return(ret);
959         }
960
961
962 static int prompt_info(X509_REQ *req,
963                 STACK_OF(CONF_VALUE) *dn_sk, char *dn_sect,
964                 STACK_OF(CONF_VALUE) *attr_sk, char *attr_sect, int attribs)
965         {
966         int i;
967         char *p,*q;
968         char buf[100];
969         int nid,min,max;
970         char *type,*def,*value;
971         CONF_VALUE *v;
972         X509_NAME *subj;
973         subj = X509_REQ_get_subject_name(req);
974         BIO_printf(bio_err,"You are about to be asked to enter information that will be incorporated\n");
975         BIO_printf(bio_err,"into your certificate request.\n");
976         BIO_printf(bio_err,"What you are about to enter is what is called a Distinguished Name or a DN.\n");
977         BIO_printf(bio_err,"There are quite a few fields but you can leave some blank\n");
978         BIO_printf(bio_err,"For some fields there will be a default value,\n");
979         BIO_printf(bio_err,"If you enter '.', the field will be left blank.\n");
980         BIO_printf(bio_err,"-----\n");
981
982
983         if (sk_CONF_VALUE_num(dn_sk))
984                 {
985                 i= -1;
986 start:          for (;;)
987                         {
988                         i++;
989                         if (sk_CONF_VALUE_num(dn_sk) <= i) break;
990
991                         v=sk_CONF_VALUE_value(dn_sk,i);
992                         p=q=NULL;
993                         type=v->name;
994                         if(!check_end(type,"_min") || !check_end(type,"_max") ||
995                                 !check_end(type,"_default") ||
996                                          !check_end(type,"_value")) continue;
997                         /* Skip past any leading X. X: X, etc to allow for
998                          * multiple instances 
999                          */
1000                         for(p = v->name; *p ; p++) 
1001                                 if ((*p == ':') || (*p == ',') ||
1002                                                          (*p == '.')) {
1003                                         p++;
1004                                         if(*p) type = p;
1005                                         break;
1006                                 }
1007                         /* If OBJ not recognised ignore it */
1008                         if ((nid=OBJ_txt2nid(type)) == NID_undef) goto start;
1009                         sprintf(buf,"%s_default",v->name);
1010                         if ((def=CONF_get_string(req_conf,dn_sect,buf)) == NULL)
1011                                 def="";
1012                                 
1013                         sprintf(buf,"%s_value",v->name);
1014                         if ((value=CONF_get_string(req_conf,dn_sect,buf)) == NULL)
1015                                 value=NULL;
1016
1017                         sprintf(buf,"%s_min",v->name);
1018                         min=(int)CONF_get_number(req_conf,dn_sect,buf);
1019
1020                         sprintf(buf,"%s_max",v->name);
1021                         max=(int)CONF_get_number(req_conf,dn_sect,buf);
1022
1023                         if (!add_DN_object(subj,v->value,def,value,nid,
1024                                 min,max))
1025                                 return 0;
1026                         }
1027                 if (X509_NAME_entry_count(subj) == 0)
1028                         {
1029                         BIO_printf(bio_err,"error, no objects specified in config file\n");
1030                         return 0;
1031                         }
1032
1033                 if (attribs)
1034                         {
1035                         if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0))
1036                                 {
1037                                 BIO_printf(bio_err,"\nPlease enter the following 'extra' attributes\n");
1038                                 BIO_printf(bio_err,"to be sent with your certificate request\n");
1039                                 }
1040
1041                         i= -1;
1042 start2:                 for (;;)
1043                                 {
1044                                 i++;
1045                                 if ((attr_sk == NULL) ||
1046                                             (sk_CONF_VALUE_num(attr_sk) <= i))
1047                                         break;
1048
1049                                 v=sk_CONF_VALUE_value(attr_sk,i);
1050                                 type=v->name;
1051                                 if ((nid=OBJ_txt2nid(type)) == NID_undef)
1052                                         goto start2;
1053
1054                                 sprintf(buf,"%s_default",type);
1055                                 if ((def=CONF_get_string(req_conf,attr_sect,buf))
1056                                         == NULL)
1057                                         def="";
1058                                 
1059                                 sprintf(buf,"%s_value",type);
1060                                 if ((value=CONF_get_string(req_conf,attr_sect,buf))
1061                                         == NULL)
1062                                         value=NULL;
1063
1064                                 sprintf(buf,"%s_min",type);
1065                                 min=(int)CONF_get_number(req_conf,attr_sect,buf);
1066
1067                                 sprintf(buf,"%s_max",type);
1068                                 max=(int)CONF_get_number(req_conf,attr_sect,buf);
1069
1070                                 if (!add_attribute_object(req,
1071                                         v->value,def,value,nid,min,max))
1072                                         return 0;
1073                                 }
1074                         }
1075                 }
1076         else
1077                 {
1078                 BIO_printf(bio_err,"No template, please set one up.\n");
1079                 return 0;
1080                 }
1081
1082         return 1;
1083
1084         }
1085
1086 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1087                         STACK_OF(CONF_VALUE) *attr_sk, int attribs)
1088         {
1089         int i;
1090         char *p,*q;
1091         char *type;
1092         CONF_VALUE *v;
1093         X509_NAME *subj;
1094
1095         subj = X509_REQ_get_subject_name(req);
1096
1097         for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
1098                 {
1099                 v=sk_CONF_VALUE_value(dn_sk,i);
1100                 p=q=NULL;
1101                 type=v->name;
1102                 /* Skip past any leading X. X: X, etc to allow for
1103                  * multiple instances 
1104                  */
1105                 for(p = v->name; *p ; p++) 
1106                         if ((*p == ':') || (*p == ',') || (*p == '.')) {
1107                                 p++;
1108                                 if(*p) type = p;
1109                                 break;
1110                         }
1111                 if (!X509_NAME_add_entry_by_txt(subj,type, MBSTRING_ASC,
1112                                 (unsigned char *) v->value,-1,-1,0)) return 0;
1113
1114                 }
1115
1116                 if (!X509_NAME_entry_count(subj))
1117                         {
1118                         BIO_printf(bio_err,"error, no objects specified in config file\n");
1119                         return 0;
1120                         }
1121                 if (attribs)
1122                         {
1123                         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++)
1124                                 {
1125                                 v=sk_CONF_VALUE_value(attr_sk,i);
1126                                 if(!X509_REQ_add1_attr_by_txt(req, v->name, MBSTRING_ASC,
1127                                         (unsigned char *)v->value, -1)) return 0;
1128                                 }
1129                         }
1130         return 1;
1131         }
1132
1133
1134 static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
1135              int nid, int min, int max)
1136         {
1137         int i,ret=0;
1138         MS_STATIC char buf[1024];
1139 start:
1140         BIO_printf(bio_err,"%s [%s]:",text,def);
1141         (void)BIO_flush(bio_err);
1142         if (value != NULL)
1143                 {
1144                 strcpy(buf,value);
1145                 strcat(buf,"\n");
1146                 BIO_printf(bio_err,"%s\n",value);
1147                 }
1148         else
1149                 {
1150                 buf[0]='\0';
1151                 fgets(buf,1024,stdin);
1152                 }
1153
1154         if (buf[0] == '\0') return(0);
1155         else if (buf[0] == '\n')
1156                 {
1157                 if ((def == NULL) || (def[0] == '\0'))
1158                         return(1);
1159                 strcpy(buf,def);
1160                 strcat(buf,"\n");
1161                 }
1162         else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
1163
1164         i=strlen(buf);
1165         if (buf[i-1] != '\n')
1166                 {
1167                 BIO_printf(bio_err,"weird input :-(\n");
1168                 return(0);
1169                 }
1170         buf[--i]='\0';
1171
1172 #ifdef CHARSET_EBCDIC
1173         ebcdic2ascii(buf, buf, i);
1174 #endif
1175         if(!req_check_len(i, min, max)) goto start;
1176         if (!X509_NAME_add_entry_by_NID(n,nid, MBSTRING_ASC,
1177                                 (unsigned char *) buf, -1,-1,0)) goto err;
1178         ret=1;
1179 err:
1180         return(ret);
1181         }
1182
1183 static int add_attribute_object(X509_REQ *req, char *text,
1184                                 char *def, char *value, int nid, int min,
1185                                 int max)
1186         {
1187         int i;
1188         static char buf[1024];
1189
1190 start:
1191         BIO_printf(bio_err,"%s [%s]:",text,def);
1192         (void)BIO_flush(bio_err);
1193         if (value != NULL)
1194                 {
1195                 strcpy(buf,value);
1196                 strcat(buf,"\n");
1197                 BIO_printf(bio_err,"%s\n",value);
1198                 }
1199         else
1200                 {
1201                 buf[0]='\0';
1202                 fgets(buf,1024,stdin);
1203                 }
1204
1205         if (buf[0] == '\0') return(0);
1206         else if (buf[0] == '\n')
1207                 {
1208                 if ((def == NULL) || (def[0] == '\0'))
1209                         return(1);
1210                 strcpy(buf,def);
1211                 strcat(buf,"\n");
1212                 }
1213         else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
1214
1215         i=strlen(buf);
1216         if (buf[i-1] != '\n')
1217                 {
1218                 BIO_printf(bio_err,"weird input :-(\n");
1219                 return(0);
1220                 }
1221         buf[--i]='\0';
1222         if(!req_check_len(i, min, max)) goto start;
1223
1224         if(!X509_REQ_add1_attr_by_NID(req, nid, MBSTRING_ASC,
1225                                         (unsigned char *)buf, -1)) {
1226                 BIO_printf(bio_err, "Error adding attribute\n");
1227                 ERR_print_errors(bio_err);
1228                 goto err;
1229         }
1230
1231         return(1);
1232 err:
1233         return(0);
1234         }
1235
1236 #ifndef NO_RSA
1237 static void MS_CALLBACK req_cb(int p, int n, void *arg)
1238         {
1239         char c='*';
1240
1241         if (p == 0) c='.';
1242         if (p == 1) c='+';
1243         if (p == 2) c='*';
1244         if (p == 3) c='\n';
1245         BIO_write((BIO *)arg,&c,1);
1246         (void)BIO_flush((BIO *)arg);
1247 #ifdef LINT
1248         p=n;
1249 #endif
1250         }
1251 #endif
1252
1253 static int req_check_len(int len, int min, int max)
1254         {
1255         if (len < min)
1256                 {
1257                 BIO_printf(bio_err,"string is too short, it needs to be at least %d bytes long\n",min);
1258                 return(0);
1259                 }
1260         if ((max != 0) && (len > max))
1261                 {
1262                 BIO_printf(bio_err,"string is too long, it needs to be less than  %d bytes long\n",max);
1263                 return(0);
1264                 }
1265         return(1);
1266         }
1267
1268 /* Check if the end of a string matches 'end' */
1269 static int check_end(char *str, char *end)
1270 {
1271         int elen, slen; 
1272         char *tmp;
1273         elen = strlen(end);
1274         slen = strlen(str);
1275         if(elen > slen) return 1;
1276         tmp = str + slen - elen;
1277         return strcmp(tmp, end);
1278 }