Add missing #ifndefs that caused missing symbols when building libssl
[openssl.git] / apps / dh.c
1 /* apps/dh.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 #ifndef NO_DH
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <time.h>
63 #include <string.h>
64 #include "apps.h"
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/bn.h>
68 #include <openssl/dh.h>
69 #include <openssl/x509.h>
70 #include <openssl/pem.h>
71
72 #undef PROG
73 #define PROG    dh_main
74
75 /* -inform arg  - input format - default PEM (DER or PEM)
76  * -outform arg - output format - default PEM
77  * -in arg      - input file - default stdin
78  * -out arg     - output file - default stdout
79  * -check       - check the parameters are ok
80  * -noout
81  * -text
82  * -C
83  */
84
85 int MAIN(int argc, char **argv)
86         {
87         DH *dh=NULL;
88         int i,badops=0,text=0;
89         BIO *in=NULL,*out=NULL;
90         int informat,outformat,check=0,noout=0,C=0,ret=1;
91         char *infile,*outfile,*prog;
92
93         apps_startup();
94
95         if (bio_err == NULL)
96                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
97                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
98
99         infile=NULL;
100         outfile=NULL;
101         informat=FORMAT_PEM;
102         outformat=FORMAT_PEM;
103
104         prog=argv[0];
105         argc--;
106         argv++;
107         while (argc >= 1)
108                 {
109                 if      (strcmp(*argv,"-inform") == 0)
110                         {
111                         if (--argc < 1) goto bad;
112                         informat=str2fmt(*(++argv));
113                         }
114                 else if (strcmp(*argv,"-outform") == 0)
115                         {
116                         if (--argc < 1) goto bad;
117                         outformat=str2fmt(*(++argv));
118                         }
119                 else if (strcmp(*argv,"-in") == 0)
120                         {
121                         if (--argc < 1) goto bad;
122                         infile= *(++argv);
123                         }
124                 else if (strcmp(*argv,"-out") == 0)
125                         {
126                         if (--argc < 1) goto bad;
127                         outfile= *(++argv);
128                         }
129                 else if (strcmp(*argv,"-check") == 0)
130                         check=1;
131                 else if (strcmp(*argv,"-text") == 0)
132                         text=1;
133                 else if (strcmp(*argv,"-C") == 0)
134                         C=1;
135                 else if (strcmp(*argv,"-noout") == 0)
136                         noout=1;
137                 else
138                         {
139                         BIO_printf(bio_err,"unknown option %s\n",*argv);
140                         badops=1;
141                         break;
142                         }
143                 argc--;
144                 argv++;
145                 }
146
147         if (badops)
148                 {
149 bad:
150                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
151                 BIO_printf(bio_err,"where options are\n");
152                 BIO_printf(bio_err," -inform arg   input format - one of DER PEM\n");
153                 BIO_printf(bio_err," -outform arg  output format - one of DER PEM\n");
154                 BIO_printf(bio_err," -in arg       input file\n");
155                 BIO_printf(bio_err," -out arg      output file\n");
156                 BIO_printf(bio_err," -check        check the DH parameters\n");
157                 BIO_printf(bio_err," -text         print a text form of the DH parameters\n");
158                 BIO_printf(bio_err," -C            Output C code\n");
159                 BIO_printf(bio_err," -noout        no output\n");
160                 goto end;
161                 }
162
163         ERR_load_crypto_strings();
164
165         in=BIO_new(BIO_s_file());
166         out=BIO_new(BIO_s_file());
167         if ((in == NULL) || (out == NULL))
168                 {
169                 ERR_print_errors(bio_err);
170                 goto end;
171                 }
172
173         if (infile == NULL)
174                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
175         else
176                 {
177                 if (BIO_read_filename(in,infile) <= 0)
178                         {
179                         perror(infile);
180                         goto end;
181                         }
182                 }
183         if (outfile == NULL)
184                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
185         else
186                 {
187                 if (BIO_write_filename(out,outfile) <= 0)
188                         {
189                         perror(outfile);
190                         goto end;
191                         }
192                 }
193
194         if      (informat == FORMAT_ASN1)
195                 dh=d2i_DHparams_bio(in,NULL);
196         else if (informat == FORMAT_PEM)
197                 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
198         else
199                 {
200                 BIO_printf(bio_err,"bad input format specified\n");
201                 goto end;
202                 }
203         if (dh == NULL)
204                 {
205                 BIO_printf(bio_err,"unable to load DH parameters\n");
206                 ERR_print_errors(bio_err);
207                 goto end;
208                 }
209
210         
211
212         if (text)
213                 {
214                 DHparams_print(out,dh);
215 #ifdef undef
216                 printf("p=");
217                 BN_print(stdout,dh->p);
218                 printf("\ng=");
219                 BN_print(stdout,dh->g);
220                 printf("\n");
221                 if (dh->length != 0)
222                         printf("recomented private length=%ld\n",dh->length);
223 #endif
224                 }
225         
226         if (check)
227                 {
228                 if (!DH_check(dh,&i))
229                         {
230                         ERR_print_errors(bio_err);
231                         goto end;
232                         }
233                 if (i & DH_CHECK_P_NOT_PRIME)
234                         printf("p value is not prime\n");
235                 if (i & DH_CHECK_P_NOT_STRONG_PRIME)
236                         printf("p value is not a strong prime\n");
237                 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
238                         printf("unable to check the generator value\n");
239                 if (i & DH_NOT_SUITABLE_GENERATOR)
240                         printf("the g value is not a generator\n");
241                 if (i == 0)
242                         printf("DH parameters appear to be ok.\n");
243                 }
244         if (C)
245                 {
246                 unsigned char *data;
247                 int len,l,bits;
248
249                 len=BN_num_bytes(dh->p);
250                 bits=BN_num_bits(dh->p);
251                 data=(unsigned char *)Malloc(len);
252                 if (data == NULL)
253                         {
254                         perror("Malloc");
255                         goto end;
256                         }
257                 l=BN_bn2bin(dh->p,data);
258                 printf("static unsigned char dh%d_p[]={",bits);
259                 for (i=0; i<l; i++)
260                         {
261                         if ((i%12) == 0) printf("\n\t");
262                         printf("0x%02X,",data[i]);
263                         }
264                 printf("\n\t};\n");
265
266                 l=BN_bn2bin(dh->g,data);
267                 printf("static unsigned char dh%d_g[]={",bits);
268                 for (i=0; i<l; i++)
269                         {
270                         if ((i%12) == 0) printf("\n\t");
271                         printf("0x%02X,",data[i]);
272                         }
273                 printf("\n\t};\n\n");
274
275                 printf("DH *get_dh%d()\n\t{\n",bits);
276                 printf("\tDH *dh;\n\n");
277                 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
278                 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
279                         bits,bits);
280                 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
281                         bits,bits);
282                 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
283                 printf("\t\treturn(NULL);\n");
284                 printf("\treturn(dh);\n\t}\n");
285                 Free(data);
286                 }
287
288
289         if (!noout)
290                 {
291                 if      (outformat == FORMAT_ASN1)
292                         i=i2d_DHparams_bio(out,dh);
293                 else if (outformat == FORMAT_PEM)
294                         i=PEM_write_bio_DHparams(out,dh);
295                 else    {
296                         BIO_printf(bio_err,"bad output format specified for outfile\n");
297                         goto end;
298                         }
299                 if (!i)
300                         {
301                         BIO_printf(bio_err,"unable to write DH paramaters\n");
302                         ERR_print_errors(bio_err);
303                         goto end;
304                         }
305                 }
306         ret=0;
307 end:
308         if (in != NULL) BIO_free(in);
309         if (out != NULL) BIO_free(out);
310         if (dh != NULL) DH_free(dh);
311         EXIT(ret);
312         }
313 #endif