Fix a variety of warnings generated by some elevated compiler-fascism,
[openssl.git] / engines / ccgost / gost_eng.c
1 /**********************************************************************
2  *                          gost_eng.c                                *
3  *             Copyright (c) 2005-2006 Cryptocom LTD                  *
4  *         This file is distributed under the same license as OpenSSL *
5  *                                                                    *
6  *              Main file of GOST engine                              *
7  *       for OpenSSL                                                  *
8  *          Requires OpenSSL 0.9.9 for compilation                    *
9  **********************************************************************/
10 #include <string.h>
11 #include <openssl/crypto.h>
12 #include <openssl/err.h>
13 #include <openssl/evp.h>
14 #include <openssl/engine.h>
15 #include <openssl/obj_mac.h>
16 #include "e_gost_err.h"
17 #include "gost_lcl.h"
18 static const char *engine_gost_id = "gost";
19 static const char *engine_gost_name = "Reference implementation of GOST engine";
20
21 /* Symmetric cipher and digest function registrar */
22
23 static int gost_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
24         const int **nids, int nid);
25
26 static int gost_digests(ENGINE *e, const EVP_MD **digest,
27         const int **nids, int ind);
28
29 static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
30         const int **nids, int nid);
31
32 static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
33         const int **nids, int nid);
34
35 static int gost_cipher_nids[] =
36     {NID_id_Gost28147_89, NID_gost89_cnt,0};
37
38 static int gost_digest_nids[] =
39         {NID_id_GostR3411_94,NID_id_Gost28147_89_MAC, 0};
40
41 static int gost_pkey_meth_nids[] = 
42         {NID_id_GostR3410_94,
43          NID_id_GostR3410_2001, NID_id_Gost28147_89_MAC, 0};
44
45 static EVP_PKEY_METHOD *pmeth_GostR3410_94 = NULL,
46          *pmeth_GostR3410_2001 = NULL,
47         *pmeth_Gost28147_MAC = NULL;
48
49 static EVP_PKEY_ASN1_METHOD *ameth_GostR3410_94 = NULL,
50         *ameth_GostR3410_2001 = NULL,
51         *ameth_Gost28147_MAC = NULL;
52
53
54 static int gost_engine_init(ENGINE *e)
55         { 
56         return 1;
57         }
58
59 static int gost_engine_finish(ENGINE *e)
60         { 
61         return 1;
62         }
63
64 static int gost_engine_destroy(ENGINE *e)
65         { 
66         gost_param_free();
67         return 1;
68         }
69
70 static int bind_gost (ENGINE *e,const char *id) 
71         {
72         int ret = 0;
73         if (id && strcmp(id, engine_gost_id)) return 0;
74
75         if (!ENGINE_set_id(e, engine_gost_id)) 
76                 {
77                 printf("ENGINE_set_id failed\n"); 
78                 goto end;
79                 }       
80         if (!ENGINE_set_name(e, engine_gost_name)) 
81                 {
82                 printf("ENGINE_set_name failed\n");
83                 goto end;
84                 }       
85         if (!ENGINE_set_digests(e, gost_digests)) 
86                 {
87                 printf("ENGINE_set_digests failed\n");
88                 goto end;
89                 }       
90         if (! ENGINE_set_ciphers(e, gost_ciphers)) 
91                 {
92                 printf("ENGINE_set_ciphers failed\n");
93                 goto end;
94                 }       
95         if (! ENGINE_set_pkey_meths(e, gost_pkey_meths)) 
96                 {
97                 printf("ENGINE_set_pkey_meths failed\n");
98                 goto end;
99                 }       
100         if (! ENGINE_set_pkey_asn1_meths(e, gost_pkey_asn1_meths)) 
101                 {
102                 printf("ENGINE_set_pkey_asn1_meths failed\n");
103                 goto end;
104                 }       
105         /* Control function and commands */
106         if (!ENGINE_set_cmd_defns(e,gost_cmds)) 
107                 {
108                 fprintf(stderr,"ENGINE_set_cmd_defns failed\n");
109                 goto end;
110                 }       
111         if (!ENGINE_set_ctrl_function(e,gost_control_func)) 
112                 {
113                 fprintf(stderr,"ENGINE_set_ctrl_func failed\n");
114                 goto end;
115                 }       
116         if ( ! ENGINE_set_destroy_function(e, gost_engine_destroy)
117                 || ! ENGINE_set_init_function(e,gost_engine_init)
118                 || ! ENGINE_set_finish_function(e,gost_engine_finish))
119                 {
120                 goto end;
121                 }
122
123         if (!register_ameth_gost(NID_id_GostR3410_94, &ameth_GostR3410_94, "GOST94", "GOST R 34.10-94")) goto end;
124         if (!register_ameth_gost(NID_id_GostR3410_2001, &ameth_GostR3410_2001, "GOST2001", "GOST R 34.10-2001")) goto end;
125         if (!register_ameth_gost(NID_id_Gost28147_89_MAC, &ameth_Gost28147_MAC,
126                 "GOST-MAC", "GOST 28147-89 MAC")) goto end;
127
128         if (!register_pmeth_gost(NID_id_GostR3410_94, &pmeth_GostR3410_94, 0)) goto end;
129         if (!register_pmeth_gost(NID_id_GostR3410_2001, &pmeth_GostR3410_2001, 0)) goto end;
130         if (!register_pmeth_gost(NID_id_Gost28147_89_MAC, &pmeth_Gost28147_MAC, 0))
131                 goto end;
132         if ( ! ENGINE_register_ciphers(e)
133                 || ! ENGINE_register_digests(e)
134                 || ! ENGINE_register_pkey_meths(e)
135                 /* These two actually should go in LIST_ADD command */
136                 || ! EVP_add_cipher(&cipher_gost)
137                 || ! EVP_add_cipher(&cipher_gost_cpacnt)
138                 || ! EVP_add_digest(&digest_gost)
139                 || ! EVP_add_digest(&imit_gost_cpa)
140                 )
141                 {
142                 goto end;
143                 }
144
145         ERR_load_GOST_strings();
146         ret = 1;
147         end:
148         return ret;
149         }       
150
151 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
152 IMPLEMENT_DYNAMIC_BIND_FN(bind_gost)
153 IMPLEMENT_DYNAMIC_CHECK_FN()
154 #endif  /* ndef OPENSSL_NO_DYNAMIC_ENGINE */
155
156 static int gost_digests(ENGINE *e, const EVP_MD **digest,
157         const int **nids, int nid)
158         { 
159         int ok =1 ;
160         if (!digest) 
161                 {
162                 *nids = gost_digest_nids;
163                 return 2; 
164                 }
165         /*printf("Digest no %d requested\n",nid);*/
166         if(nid == NID_id_GostR3411_94) 
167                 {
168                 *digest = &digest_gost;
169                 }
170         else if (nid == NID_id_Gost28147_89_MAC) 
171                 {
172                 *digest = &imit_gost_cpa;
173                 }
174         else
175                 {
176                 ok =0;
177                 *digest = NULL;
178                 }
179         return ok;
180         }       
181         
182 static int gost_ciphers (ENGINE *e,const EVP_CIPHER **cipher,
183         const int **nids, int nid) 
184         {
185         int ok = 1;
186         if (!cipher) 
187                 {
188                 *nids = gost_cipher_nids;
189                 return 2; /* two ciphers are supported */
190                 }
191
192         if(nid == NID_id_Gost28147_89) 
193                 {
194                 *cipher = &cipher_gost;
195                 }
196         else if  (nid == NID_gost89_cnt) 
197                 {
198                 *cipher = &cipher_gost_cpacnt;
199                 }
200         else    
201                 {
202                 ok = 0;
203                 *cipher = NULL;
204                 }
205         return ok;
206         }       
207
208 static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
209         const int **nids, int nid)
210         {
211         if (!pmeth) 
212                 {
213                 *nids = gost_pkey_meth_nids;
214                 return 3;
215                 }
216
217         switch (nid) 
218                 {
219                 case NID_id_GostR3410_94: *pmeth = pmeth_GostR3410_94; return 1;
220                 case NID_id_GostR3410_2001: *pmeth = pmeth_GostR3410_2001; return 1;
221                 case NID_id_Gost28147_89_MAC: *pmeth = pmeth_Gost28147_MAC; return 1;
222                 default:;
223                 }
224         
225         *pmeth = NULL;
226         return 0;
227         }
228
229 static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
230         const int **nids, int nid)
231         {
232         if (!ameth) 
233                 {
234                 *nids = gost_pkey_meth_nids;
235                 return 3;
236                 }
237         switch (nid) 
238                 {
239                 case NID_id_GostR3410_94: *ameth = ameth_GostR3410_94; return 1;
240                 case NID_id_GostR3410_2001: *ameth = ameth_GostR3410_2001; return 1;
241                 case NID_id_Gost28147_89_MAC: *ameth = ameth_Gost28147_MAC; return 1;
242         
243                 default:;
244                 }
245         
246         *ameth = NULL;
247         return 0;
248         }
249
250 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
251 static ENGINE *engine_gost(void)
252         {       
253         ENGINE *ret = ENGINE_new();
254         if (!ret)
255                 return NULL;
256         if (!bind_gost(ret,engine_gost_id)) 
257                 {
258                 ENGINE_free(ret);
259                 return NULL;
260                 }
261         return ret;
262         }
263         
264 void ENGINE_load_gost(void)
265         {
266         ENGINE *toadd =engine_gost();
267         if (!toadd) return;
268         ENGINE_add(toadd);
269         ENGINE_free(toadd);
270         ERR_clear_error();
271         }
272 #endif  
273