apps/provider.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/opensslconf.h>
  11
  12 #include "apps.h"
  13 #include "app_params.h"
  14 #include "progs.h"
  15 #include <openssl/err.h>
  16 #include <openssl/evp.h>
  17 #include <openssl/safestack.h>
  18 #include <openssl/provider.h>
  19 #include <openssl/core.h>
  20 #include <openssl/core_numbers.h>
  21
  22 typedef enum OPTION_choice {
  23     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  24     OPT_V = 100, OPT_VV, OPT_VVV
  25 } OPTION_CHOICE;
  26
  27 const OPTIONS provider_options[] = {
  28     {OPT_HELP_STR, 1, '-', "Usage: %s [options] provider...\n"},
  29     {OPT_HELP_STR, 1, '-', "  provider... Providers to load\n"},
  30     {"help", OPT_HELP, '-', "Display this summary"},
  31     {"v", OPT_V, '-', "List the algorithm names of specified provider"},
  32     {"vv", OPT_VV, '-', "List the algorithm names of specified providers,"},
  33     {OPT_MORE_STR, 0, '-', "categorised by operation type"},
  34     {"vvv", OPT_VVV, '-', "List the algorithm names of specified provider"},
  35     {OPT_MORE_STR, 0, '-', "one at a time, and list all known parameters"},
  36     {NULL}
  37 };
  38
  39 typedef struct info_st INFO;
  40 typedef struct meta_st META;
  41
  42 struct info_st {
  43     const char *name;
  44     void *method;
  45     const OSSL_PARAM *gettable_params;
  46     const OSSL_PARAM *gettable_ctx_params;
  47     const OSSL_PARAM *settable_ctx_params;
  48 };
  49
  50 struct meta_st {
  51     int first;                   /* For prints */
  52     int total;
  53     int indent;
  54     int subindent;
  55     int verbose;
  56     const char *label;
  57     OSSL_PROVIDER *prov;
  58     void (*fn)(META *meta, INFO *info);
  59 };
  60
  61 static void print_caps(META *meta, INFO *info)
  62 {
  63     switch (meta->verbose) {
  64     case 1:
  65         BIO_printf(bio_out, meta->first ? "%s" : " %s", info->name);
  66         break;
  67     case 2:
  68         if (meta->first) {
  69             if (meta->total > 0)
  70                 BIO_printf(bio_out, "\n");
  71             BIO_printf(bio_out, "%*s%ss:", meta->indent, "", meta->label);
  72         }
  73         BIO_printf(bio_out, " %s", info->name);
  74         break;
  75     case 3:
  76     default:
  77         BIO_printf(bio_out, "%*s%s %s\n", meta->indent, "", meta->label,
  78                    info->name);
  79         print_param_types("retrievable algorithm parameters",
  80                           info->gettable_params, meta->subindent);
  81         print_param_types("retrievable operation parameters",
  82                           info->gettable_ctx_params, meta->subindent);
  83         print_param_types("settable operation parameters",
  84                           info->settable_ctx_params, meta->subindent);
  85         break;
  86     }
  87     meta->first = 0;
  88 }
  89
  90 static void do_method(void *method, const char *name,
  91                       const OSSL_PARAM *gettable_params,
  92                       const OSSL_PARAM *gettable_ctx_params,
  93                       const OSSL_PARAM *settable_ctx_params,
  94                       META *meta)
  95 {
  96     INFO info;
  97
  98     info.name = name;
  99     info.method = method;
 100     info.gettable_params = gettable_params;
 101     info.gettable_ctx_params = gettable_ctx_params;
 102     info.settable_ctx_params = settable_ctx_params;
 103     meta->fn(meta, &info);
 104     meta->total++;
 105 }
 106
 107 static void do_cipher(EVP_CIPHER *cipher, void *meta)
 108 {
 109     do_method(cipher, EVP_CIPHER_name(cipher),
 110               EVP_CIPHER_gettable_params(cipher),
 111               EVP_CIPHER_CTX_gettable_params(cipher),
 112               EVP_CIPHER_CTX_settable_params(cipher),
 113               meta);
 114 }
 115
 116 static void do_digest(EVP_MD *digest, void *meta)
 117 {
 118     do_method(digest, EVP_MD_name(digest),
 119               EVP_MD_gettable_params(digest),
 120               EVP_MD_CTX_gettable_params(digest),
 121               EVP_MD_CTX_settable_params(digest),
 122               meta);
 123 }
 124
 125 static void do_mac(EVP_MAC *mac, void *meta)
 126 {
 127     do_method(mac, EVP_MAC_name(mac),
 128               EVP_MAC_gettable_params(mac),
 129               EVP_MAC_CTX_gettable_params(mac),
 130               EVP_MAC_CTX_settable_params(mac),
 131               meta);
 132 }
 133
 134 /*
 135  * TODO(3.0) Enable when KEYMGMT and KEYEXCH have gettables and settables
 136  */
 137 #if 0
 138 static void do_keymgmt(EVP_KEYMGMT *keymgmt, void *meta)
 139 {
 140     do_method(keymgmt, EVP_KEYMGMT_name(keymgmt),
 141               EVP_KEYMGMT_gettable_params(keymgmt),
 142               EVP_KEYMGMT_gettable_ctx_params(keymgmt),
 143               EVP_KEYMGMT_settable_ctx_params(keymgmt),
 144               meta);
 145 }
 146
 147 static void do_keyexch(EVP_KEYEXCH *keyexch, void *meta)
 148 {
 149     do_method(keyexch, EVP_KEYEXCH_name(keyexch),
 150               EVP_KEYEXCH_gettable_params(keyexch),
 151               EVP_KEYEXCH_gettable_ctx_params(keyexch),
 152               EVP_KEYEXCH_settable_ctx_params(keyexch),
 153               meta);
 154 }
 155 #endif
 156
 157 int provider_main(int argc, char **argv)
 158 {
 159     int ret = 1, i;
 160     int verbose = 0;
 161     STACK_OF(OPENSSL_CSTRING) *providers = sk_OPENSSL_CSTRING_new_null();
 162     OPTION_CHOICE o;
 163     char *prog;
 164
 165     prog = opt_init(argc, argv, provider_options);
 166     while ((o = opt_next()) != OPT_EOF) {
 167         switch (o) {
 168         default: /* Catching OPT_ERR & covering OPT_EOF which isn't possible */
 169             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 170             goto end;
 171         case OPT_HELP:
 172             opt_help(provider_options);
 173             ret = 0;
 174             goto end;
 175         case OPT_VVV:
 176         case OPT_VV:
 177         case OPT_V:
 178             /* Convert to an integer from one to four. */
 179             i = (int)(o - OPT_V) + 1;
 180             if (verbose < i)
 181                 verbose = i;
 182             break;
 183         }
 184     }
 185
 186     /* Allow any trailing parameters as provider names. */
 187     argc = opt_num_rest();
 188     argv = opt_rest();
 189     for ( ; *argv; argv++) {
 190         if (**argv == '-') {
 191             BIO_printf(bio_err, "%s: Cannot mix flags and provider names.\n",
 192                        prog);
 193             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 194             goto end;
 195         }
 196         sk_OPENSSL_CSTRING_push(providers, *argv);
 197     }
 198
 199     ret = 0;
 200     for (i = 0; i < sk_OPENSSL_CSTRING_num(providers); i++) {
 201         const char *name = sk_OPENSSL_CSTRING_value(providers, i);
 202         OSSL_PROVIDER *prov = OSSL_PROVIDER_load(NULL, name);
 203
 204         if (prov != NULL) {
 205             BIO_printf(bio_out, verbose == 0 ? "%s\n" :  "[ %s ]\n", name);
 206
 207             if (verbose > 0) {
 208                 META data;
 209
 210                 data.total = 0;
 211                 data.first = 1;
 212                 data.verbose = verbose;
 213                 data.prov = prov;
 214                 data.fn = print_caps;
 215
 216                 switch (verbose) {
 217                 case 1:
 218                     BIO_printf(bio_out, "    ");
 219                     break;
 220                 case 2:
 221                     data.indent = 4;
 222                     break;
 223                 case 3:
 224                 default:
 225                     data.indent = 4;
 226                     data.subindent = 10;
 227                     break;
 228                 }
 229
 230                 if (verbose > 1) {
 231                     data.first = 1;
 232                     data.label = "Cipher";
 233                 }
 234                 EVP_CIPHER_do_all_ex(NULL, do_cipher, &data);
 235                 if (verbose > 1) {
 236                     data.first = 1;
 237                     data.label = "Digest";
 238                 }
 239                 EVP_MD_do_all_ex(NULL, do_digest, &data);
 240                 if (verbose > 1) {
 241                     data.first = 1;
 242                     data.label = "MAC";
 243                 }
 244                 EVP_MAC_do_all_ex(NULL, do_mac, &data);
 245
 246 /*
 247  * TODO(3.0) Enable when KEYMGMT and KEYEXCH have do_all_ex functions
 248  */
 249 #if 0
 250                 if (verbose > 1) {
 251                     data.first = 1;
 252                     data.label = "Key manager";
 253                 }
 254                 EVP_KEYMGMT_do_all_ex(NULL, do_keymgmt, &data);
 255                 if (verbose > 1) {
 256                     data.first = 1;
 257                     data.label = "Key exchange";
 258                 }
 259                 EVP_KEYEXCH_do_all_ex(NULL, do_keyexch, &data);
 260 #endif
 261
 262                 switch (verbose) {
 263                 default:
 264                     break;
 265                 case 2:
 266                 case 1:
 267                     BIO_printf(bio_out, "\n");
 268                     break;
 269                 }
 270             }
 271             OSSL_PROVIDER_unload(prov);
 272         } else {
 273             ERR_print_errors(bio_err);
 274             ret = 1;
 275             /*
 276              * Just because one provider module failed, there's no reason to
 277              * stop, if there are more to try.
 278              */
 279         }
 280     }
 281
 282  end:
 283
 284     ERR_print_errors(bio_err);
 285     sk_OPENSSL_CSTRING_free(providers);
 286     return ret;
 287 }