1 /* apps/engine.c -*- mode: C; c-file-style: "eay" -*- */ 2 /* Written by Richard Levitte <richard (at) levitte.org> for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing (at) OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay (at) cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh (at) cryptsoft.com). 56 * 57 */ 58 59 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #ifdef OPENSSL_NO_STDIO 64 #define APPS_WIN16 65 #endif 66 #include "apps.h" 67 #include <openssl/err.h> 68 #ifndef OPENSSL_NO_ENGINE 69 #include <openssl/engine.h> 70 #include <openssl/ssl.h> 71 72 #undef PROG 73 #define PROG engine_main 74 75 static const char *engine_usage[]={ 76 "usage: engine opts [engine ...]\n", 77 " -v[v[v[v]]] - verbose mode, for each engine, list its 'control commands'\n", 78 " -vv will additionally display each command's description\n", 79 " -vvv will also add the input flags for each command\n", 80 " -vvvv will also show internal input flags\n", 81 " -c - for each engine, also list the capabilities\n", 82 " -t[t] - for each engine, check that they are really available\n", 83 " -tt will display error trace for unavailable engines\n", 84 " -pre <cmd> - runs command 'cmd' against the ENGINE before any attempts\n", 85 " to load it (if -t is used)\n", 86 " -post <cmd> - runs command 'cmd' against the ENGINE after loading it\n", 87 " (only used if -t is also provided)\n", 88 " NB: -pre and -post will be applied to all ENGINEs supplied on the command\n", 89 " line, or all supported ENGINEs if none are specified.\n", 90 " Eg. '-pre \"SO_PATH:/lib/libdriver.so\"' calls command \"SO_PATH\" with\n", 91 " argument \"/lib/libdriver.so\".\n", 92 NULL 93 }; 94 95 static void identity(char *ptr) 96 { 97 return; 98 } 99 100 static int append_buf(char **buf, const char *s, int *size, int step) 101 { 102 int l = strlen(s); 103 104 if (*buf == NULL) 105 { 106 *size = step; 107 *buf = OPENSSL_malloc(*size); 108 if (*buf == NULL) 109 return 0; 110 **buf = '\0'; 111 } 112 113 if (**buf != '\0') 114 l += 2; /* ", " */ 115 116 if (strlen(*buf) + strlen(s) >= (unsigned int)*size) 117 { 118 *size += step; 119 *buf = OPENSSL_realloc(*buf, *size); 120 } 121 122 if (*buf == NULL) 123 return 0; 124 125 if (**buf != '\0') 126 BUF_strlcat(*buf, ", ", *size); 127 BUF_strlcat(*buf, s, *size); 128 129 return 1; 130 } 131 132 static int util_flags(BIO *bio_out, unsigned int flags, const char *indent) 133 { 134 int started = 0, err = 0; 135 /* Indent before displaying input flags */ 136 BIO_printf(bio_out, "%s%s(input flags): ", indent, indent); 137 if(flags == 0) 138 { 139 BIO_printf(bio_out, "<no flags>\n"); 140 return 1; 141 } 142 /* If the object is internal, mark it in a way that shows instead of 143 * having it part of all the other flags, even if it really is. */ 144 if(flags & ENGINE_CMD_FLAG_INTERNAL) 145 { 146 BIO_printf(bio_out, "[Internal] "); 147 } 148 149 if(flags & ENGINE_CMD_FLAG_NUMERIC) 150 { 151 BIO_printf(bio_out, "NUMERIC"); 152 started = 1; 153 } 154 /* Now we check that no combinations of the mutually exclusive NUMERIC, 155 * STRING, and NO_INPUT flags have been used. Future flags that can be 156 * OR'd together with these would need to added after these to preserve 157 * the testing logic. */ 158 if(flags & ENGINE_CMD_FLAG_STRING) 159 { 160 if(started) 161 { 162 BIO_printf(bio_out, "|"); 163 err = 1; 164 } 165 BIO_printf(bio_out, "STRING"); 166 started = 1; 167 } 168 if(flags & ENGINE_CMD_FLAG_NO_INPUT) 169 { 170 if(started) 171 { 172 BIO_printf(bio_out, "|"); 173 err = 1; 174 } 175 BIO_printf(bio_out, "NO_INPUT"); 176 started = 1; 177 } 178 /* Check for unknown flags */ 179 flags = flags & ~ENGINE_CMD_FLAG_NUMERIC & 180 ~ENGINE_CMD_FLAG_STRING & 181 ~ENGINE_CMD_FLAG_NO_INPUT & 182 ~ENGINE_CMD_FLAG_INTERNAL; 183 if(flags) 184 { 185 if(started) BIO_printf(bio_out, "|"); 186 BIO_printf(bio_out, "<0x%04X>", flags); 187 } 188 if(err) 189 BIO_printf(bio_out, " <illegal flags!>"); 190 BIO_printf(bio_out, "\n"); 191 return 1; 192 } 193 194 static int util_verbose(ENGINE *e, int verbose, BIO *bio_out, const char *indent) 195 { 196 static const int line_wrap = 78; 197 int num; 198 int ret = 0; 199 char *name = NULL; 200 char *desc = NULL; 201 int flags; 202 int xpos = 0; 203 STACK_OF(OPENSSL_STRING) *cmds = NULL; 204 if(!ENGINE_ctrl(e, ENGINE_CTRL_HAS_CTRL_FUNCTION, 0, NULL, NULL) || 205 ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_FIRST_CMD_TYPE, 206 0, NULL, NULL)) <= 0)) 207 { 208 #if 0 209 BIO_printf(bio_out, "%s<no control commands>\n", indent); 210 #endif 211 return 1; 212 } 213 214 cmds = sk_OPENSSL_STRING_new_null(); 215 216 if(!cmds) 217 goto err; 218 do { 219 int len; 220 /* Get the command input flags */ 221 if((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num, 222 NULL, NULL)) < 0) 223 goto err; 224 if (!(flags & ENGINE_CMD_FLAG_INTERNAL) || verbose >= 4) 225 { 226 /* Get the command name */ 227 if((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_LEN_FROM_CMD, num, 228 NULL, NULL)) <= 0) 229 goto err; 230 if((name = OPENSSL_malloc(len + 1)) == NULL) 231 goto err; 232 if(ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_FROM_CMD, num, name, 233 NULL) <= 0) 234 goto err; 235 /* Get the command description */ 236 if((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_LEN_FROM_CMD, num, 237 NULL, NULL)) < 0) 238 goto err; 239 if(len > 0) 240 { 241 if((desc = OPENSSL_malloc(len + 1)) == NULL) 242 goto err; 243 if(ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_FROM_CMD, num, desc, 244 NULL) <= 0) 245 goto err; 246 } 247 /* Now decide on the output */ 248 if(xpos == 0) 249 /* Do an indent */ 250 xpos = BIO_puts(bio_out, indent); 251 else 252 /* Otherwise prepend a ", " */ 253 xpos += BIO_printf(bio_out, ", "); 254 if(verbose == 1) 255 { 256 /* We're just listing names, comma-delimited */ 257 if((xpos > (int)strlen(indent)) && 258 (xpos + (int)strlen(name) > line_wrap)) 259 { 260 BIO_printf(bio_out, "\n"); 261 xpos = BIO_puts(bio_out, indent); 262 } 263 xpos += BIO_printf(bio_out, "%s", name); 264 } 265 else 266 { 267 /* We're listing names plus descriptions */ 268 BIO_printf(bio_out, "%s: %s\n", name, 269 (desc == NULL) ? "<no description>" : desc); 270 /* ... and sometimes input flags */ 271 if((verbose >= 3) && !util_flags(bio_out, flags, 272 indent)) 273 goto err; 274 xpos = 0; 275 } 276 } 277 OPENSSL_free(name); name = NULL; 278 if(desc) { OPENSSL_free(desc); desc = NULL; } 279 /* Move to the next command */ 280 num = ENGINE_ctrl(e, ENGINE_CTRL_GET_NEXT_CMD_TYPE, 281 num, NULL, NULL); 282 } while(num > 0); 283 if(xpos > 0) 284 BIO_printf(bio_out, "\n"); 285 ret = 1; 286 err: 287 if(cmds) sk_OPENSSL_STRING_pop_free(cmds, identity); 288 if(name) OPENSSL_free(name); 289 if(desc) OPENSSL_free(desc); 290 return ret; 291 } 292 293 static void util_do_cmds(ENGINE *e, STACK_OF(OPENSSL_STRING) *cmds, 294 BIO *bio_out, const char *indent) 295 { 296 int loop, res, num = sk_OPENSSL_STRING_num(cmds); 297 298 if(num < 0) 299 { 300 BIO_printf(bio_out, "[Error]: internal stack error\n"); 301 return; 302 } 303 for(loop = 0; loop < num; loop++) 304 { 305 char buf[256]; 306 const char *cmd, *arg; 307 cmd = sk_OPENSSL_STRING_value(cmds, loop); 308 res = 1; /* assume success */ 309 /* Check if this command has no ":arg" */ 310 if((arg = strstr(cmd, ":")) == NULL) 311 { 312 if(!ENGINE_ctrl_cmd_string(e, cmd, NULL, 0)) 313 res = 0; 314 } 315 else 316 { 317 if((int)(arg - cmd) > 254) 318 { 319 BIO_printf(bio_out,"[Error]: command name too long\n"); 320 return; 321 } 322 memcpy(buf, cmd, (int)(arg - cmd)); 323 buf[arg-cmd] = '\0'; 324 arg++; /* Move past the ":" */ 325 /* Call the command with the argument */ 326 if(!ENGINE_ctrl_cmd_string(e, buf, arg, 0)) 327 res = 0; 328 } 329 if(res) 330 BIO_printf(bio_out, "[Success]: %s\n", cmd); 331 else 332 { 333 BIO_printf(bio_out, "[Failure]: %s\n", cmd); 334 ERR_print_errors(bio_out); 335 } 336 } 337 } 338 339 int MAIN(int, char **); 340 341 int MAIN(int argc, char **argv) 342 { 343 int ret=1,i; 344 const char **pp; 345 int verbose=0, list_cap=0, test_avail=0, test_avail_noise = 0; 346 ENGINE *e; 347 STACK_OF(OPENSSL_STRING) *engines = sk_OPENSSL_STRING_new_null(); 348 STACK_OF(OPENSSL_STRING) *pre_cmds = sk_OPENSSL_STRING_new_null(); 349 STACK_OF(OPENSSL_STRING) *post_cmds = sk_OPENSSL_STRING_new_null(); 350 int badops=1; 351 BIO *bio_out=NULL; 352 const char *indent = " "; 353 354 apps_startup(); 355 SSL_load_error_strings(); 356 357 if (bio_err == NULL) 358 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); 359 360 if (!load_config(bio_err, NULL)) 361 goto end; 362 bio_out=BIO_new_fp(stdout,BIO_NOCLOSE); 363 #ifdef OPENSSL_SYS_VMS 364 { 365 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 366 bio_out = BIO_push(tmpbio, bio_out); 367 } 368 #endif 369 370 argc--; 371 argv++; 372 while (argc >= 1) 373 { 374 if (strncmp(*argv,"-v",2) == 0) 375 { 376 if(strspn(*argv + 1, "v") < strlen(*argv + 1)) 377 goto skip_arg_loop; 378 if((verbose=strlen(*argv + 1)) > 4) 379 goto skip_arg_loop; 380 } 381 else if (strcmp(*argv,"-c") == 0) 382 list_cap=1; 383 else if (strncmp(*argv,"-t",2) == 0) 384 { 385 test_avail=1; 386 if(strspn(*argv + 1, "t") < strlen(*argv + 1)) 387 goto skip_arg_loop; 388 if((test_avail_noise = strlen(*argv + 1) - 1) > 1) 389 goto skip_arg_loop; 390 } 391 else if (strcmp(*argv,"-pre") == 0) 392 { 393 argc--; argv++; 394 if (argc == 0) 395 goto skip_arg_loop; 396 sk_OPENSSL_STRING_push(pre_cmds,*argv); 397 } 398 else if (strcmp(*argv,"-post") == 0) 399 { 400 argc--; argv++; 401 if (argc == 0) 402 goto skip_arg_loop; 403 sk_OPENSSL_STRING_push(post_cmds,*argv); 404 } 405 else if ((strncmp(*argv,"-h",2) == 0) || 406 (strcmp(*argv,"-?") == 0)) 407 goto skip_arg_loop; 408 else 409 sk_OPENSSL_STRING_push(engines,*argv); 410 argc--; 411 argv++; 412 } 413 /* Looks like everything went OK */ 414 badops = 0; 415 skip_arg_loop: 416 417 if (badops) 418 { 419 for (pp=engine_usage; (*pp != NULL); pp++) 420 BIO_printf(bio_err,"%s",*pp); 421 goto end; 422 } 423 424 if (sk_OPENSSL_STRING_num(engines) == 0) 425 { 426 for(e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) 427 { 428 sk_OPENSSL_STRING_push(engines,(char *)ENGINE_get_id(e)); 429 } 430 } 431 432 for (i=0; i<sk_OPENSSL_STRING_num(engines); i++) 433 { 434 const char *id = sk_OPENSSL_STRING_value(engines,i); 435 if ((e = ENGINE_by_id(id)) != NULL) 436 { 437 const char *name = ENGINE_get_name(e); 438 /* Do "id" first, then "name". Easier to auto-parse. */ 439 BIO_printf(bio_out, "(%s) %s\n", id, name); 440 util_do_cmds(e, pre_cmds, bio_out, indent); 441 if (strcmp(ENGINE_get_id(e), id) != 0) 442 { 443 BIO_printf(bio_out, "Loaded: (%s) %s\n", 444 ENGINE_get_id(e), ENGINE_get_name(e)); 445 } 446 if (list_cap) 447 { 448 int cap_size = 256; 449 char *cap_buf = NULL; 450 int k,n; 451 const int *nids; 452 ENGINE_CIPHERS_PTR fn_c; 453 ENGINE_DIGESTS_PTR fn_d; 454 ENGINE_PKEY_METHS_PTR fn_pk; 455 456 if (ENGINE_get_RSA(e) != NULL 457 && !append_buf(&cap_buf, "RSA", 458 &cap_size, 256)) 459 goto end; 460 if (ENGINE_get_DSA(e) != NULL 461 && !append_buf(&cap_buf, "DSA", 462 &cap_size, 256)) 463 goto end; 464 if (ENGINE_get_DH(e) != NULL 465 && !append_buf(&cap_buf, "DH", 466 &cap_size, 256)) 467 goto end; 468 if (ENGINE_get_RAND(e) != NULL 469 && !append_buf(&cap_buf, "RAND", 470 &cap_size, 256)) 471 goto end; 472 473 fn_c = ENGINE_get_ciphers(e); 474 if(!fn_c) goto skip_ciphers; 475 n = fn_c(e, NULL, &nids, 0); 476 for(k=0 ; k < n ; ++k) 477 if(!append_buf(&cap_buf, 478 OBJ_nid2sn(nids[k]), 479 &cap_size, 256)) 480 goto end; 481 482 skip_ciphers: 483 fn_d = ENGINE_get_digests(e); 484 if(!fn_d) goto skip_digests; 485 n = fn_d(e, NULL, &nids, 0); 486 for(k=0 ; k < n ; ++k) 487 if(!append_buf(&cap_buf, 488 OBJ_nid2sn(nids[k]), 489 &cap_size, 256)) 490 goto end; 491 492 skip_digests: 493 fn_pk = ENGINE_get_pkey_meths(e); 494 if(!fn_pk) goto skip_pmeths; 495 n = fn_pk(e, NULL, &nids, 0); 496 for(k=0 ; k < n ; ++k) 497 if(!append_buf(&cap_buf, 498 OBJ_nid2sn(nids[k]), 499 &cap_size, 256)) 500 goto end; 501 skip_pmeths: 502 if (cap_buf && (*cap_buf != '\0')) 503 BIO_printf(bio_out, " [%s]\n", cap_buf); 504 505 OPENSSL_free(cap_buf); 506 } 507 if(test_avail) 508 { 509 BIO_printf(bio_out, "%s", indent); 510 if (ENGINE_init(e)) 511 { 512 BIO_printf(bio_out, "[ available ]\n"); 513 util_do_cmds(e, post_cmds, bio_out, indent); 514 ENGINE_finish(e); 515 } 516 else 517 { 518 BIO_printf(bio_out, "[ unavailable ]\n"); 519 if(test_avail_noise) 520 ERR_print_errors_fp(stdout); 521 ERR_clear_error(); 522 } 523 } 524 if((verbose > 0) && !util_verbose(e, verbose, bio_out, indent)) 525 goto end; 526 ENGINE_free(e); 527 } 528 else 529 ERR_print_errors(bio_err); 530 } 531 532 ret=0; 533 end: 534 535 ERR_print_errors(bio_err); 536 sk_OPENSSL_STRING_pop_free(engines, identity); 537 sk_OPENSSL_STRING_pop_free(pre_cmds, identity); 538 sk_OPENSSL_STRING_pop_free(post_cmds, identity); 539 if (bio_out != NULL) BIO_free_all(bio_out); 540 apps_shutdown(); 541 OPENSSL_EXIT(ret); 542 } 543 #else 544 545 # if PEDANTIC 546 static void *dummy=&dummy; 547 # endif 548 549 #endif 550
