1 /* 2 * Copyright 1995-2021 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 <stdio.h> 11 #include <stdlib.h> 12 #include <string.h> 13 #include "apps.h" 14 #include "progs.h" 15 #include <openssl/bio.h> 16 #include <openssl/err.h> 17 #include <openssl/x509.h> 18 #include <openssl/x509v3.h> 19 #include <openssl/pem.h> 20 21 typedef enum OPTION_choice { 22 OPT_COMMON, 23 OPT_INFORM, OPT_IN, OPT_OUTFORM, OPT_OUT, OPT_KEYFORM, OPT_KEY, 24 OPT_ISSUER, OPT_LASTUPDATE, OPT_NEXTUPDATE, OPT_FINGERPRINT, 25 OPT_CRLNUMBER, OPT_BADSIG, OPT_GENDELTA, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE, 26 OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE, OPT_VERIFY, OPT_DATEOPT, OPT_TEXT, OPT_HASH, 27 OPT_HASH_OLD, OPT_NOOUT, OPT_NAMEOPT, OPT_MD, OPT_PROV_ENUM 28 } OPTION_CHOICE; 29 30 const OPTIONS crl_options[] = { 31 OPT_SECTION("General"), 32 {"help", OPT_HELP, '-', "Display this summary"}, 33 {"verify", OPT_VERIFY, '-', "Verify CRL signature"}, 34 35 OPT_SECTION("Input"), 36 {"in", OPT_IN, '<', "Input file - default stdin"}, 37 {"inform", OPT_INFORM, 'F', "CRL input format (DER or PEM); has no effect"}, 38 {"key", OPT_KEY, '<', "CRL signing Private key to use"}, 39 {"keyform", OPT_KEYFORM, 'F', "Private key file format (DER/PEM/P12); has no effect"}, 40 41 OPT_SECTION("Output"), 42 {"out", OPT_OUT, '>', "output file - default stdout"}, 43 {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"}, 44 {"dateopt", OPT_DATEOPT, 's', "Datetime format used for printing. (rfc_822/iso_8601). Default is rfc_822."}, 45 {"text", OPT_TEXT, '-', "Print out a text format version"}, 46 {"hash", OPT_HASH, '-', "Print hash value"}, 47 #ifndef OPENSSL_NO_MD5 48 {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"}, 49 #endif 50 {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"}, 51 {"", OPT_MD, '-', "Any supported digest"}, 52 53 OPT_SECTION("CRL"), 54 {"issuer", OPT_ISSUER, '-', "Print issuer DN"}, 55 {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"}, 56 {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"}, 57 {"noout", OPT_NOOUT, '-', "No CRL output"}, 58 {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"}, 59 {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"}, 60 {"badsig", OPT_BADSIG, '-', "Corrupt last byte of loaded CRL signature (for test)" }, 61 {"gendelta", OPT_GENDELTA, '<', "Other CRL to compare/diff to the Input one"}, 62 63 OPT_SECTION("Certificate"), 64 {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"}, 65 {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"}, 66 {"CAstore", OPT_CASTORE, ':', "Verify CRL using certificates in store URI"}, 67 {"no-CAfile", OPT_NOCAFILE, '-', 68 "Do not load the default certificates file"}, 69 {"no-CApath", OPT_NOCAPATH, '-', 70 "Do not load certificates from the default certificates directory"}, 71 {"no-CAstore", OPT_NOCASTORE, '-', 72 "Do not load certificates from the default certificates store"}, 73 OPT_PROV_OPTIONS, 74 {NULL} 75 }; 76 77 int crl_main(int argc, char **argv) 78 { 79 X509_CRL *x = NULL; 80 BIO *out = NULL; 81 X509_STORE *store = NULL; 82 X509_STORE_CTX *ctx = NULL; 83 X509_LOOKUP *lookup = NULL; 84 X509_OBJECT *xobj = NULL; 85 EVP_PKEY *pkey; 86 EVP_MD *digest = (EVP_MD *)EVP_sha1(); 87 char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL; 88 char *digestname = NULL; 89 const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL, *prog; 90 OPTION_CHOICE o; 91 int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0; 92 int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, keyformat = FORMAT_UNDEF; 93 int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0; 94 int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0, noCAstore = 0; 95 unsigned long dateopt = ASN1_DTFLGS_RFC822; 96 int i; 97 #ifndef OPENSSL_NO_MD5 98 int hash_old = 0; 99 #endif 100 101 prog = opt_init(argc, argv, crl_options); 102 while ((o = opt_next()) != OPT_EOF) { 103 switch (o) { 104 case OPT_EOF: 105 case OPT_ERR: 106 opthelp: 107 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 108 goto end; 109 case OPT_HELP: 110 opt_help(crl_options); 111 ret = 0; 112 goto end; 113 case OPT_INFORM: 114 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat)) 115 goto opthelp; 116 break; 117 case OPT_IN: 118 infile = opt_arg(); 119 break; 120 case OPT_OUTFORM: 121 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) 122 goto opthelp; 123 break; 124 case OPT_OUT: 125 outfile = opt_arg(); 126 break; 127 case OPT_KEYFORM: 128 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat)) 129 goto opthelp; 130 break; 131 case OPT_KEY: 132 keyfile = opt_arg(); 133 break; 134 case OPT_GENDELTA: 135 crldiff = opt_arg(); 136 break; 137 case OPT_CAPATH: 138 CApath = opt_arg(); 139 do_ver = 1; 140 break; 141 case OPT_CAFILE: 142 CAfile = opt_arg(); 143 do_ver = 1; 144 break; 145 case OPT_CASTORE: 146 CAstore = opt_arg(); 147 do_ver = 1; 148 break; 149 case OPT_NOCAPATH: 150 noCApath = 1; 151 break; 152 case OPT_NOCAFILE: 153 noCAfile = 1; 154 break; 155 case OPT_NOCASTORE: 156 noCAstore = 1; 157 break; 158 case OPT_HASH_OLD: 159 #ifndef OPENSSL_NO_MD5 160 hash_old = ++num; 161 #endif 162 break; 163 case OPT_VERIFY: 164 do_ver = 1; 165 break; 166 case OPT_DATEOPT: 167 if (!set_dateopt(&dateopt, opt_arg())) 168 goto opthelp; 169 break; 170 case OPT_TEXT: 171 text = 1; 172 break; 173 case OPT_HASH: 174 hash = ++num; 175 break; 176 case OPT_ISSUER: 177 issuer = ++num; 178 break; 179 case OPT_LASTUPDATE: 180 lastupdate = ++num; 181 break; 182 case OPT_NEXTUPDATE: 183 nextupdate = ++num; 184 break; 185 case OPT_NOOUT: 186 noout = 1; 187 break; 188 case OPT_FINGERPRINT: 189 fingerprint = ++num; 190 break; 191 case OPT_CRLNUMBER: 192 crlnumber = ++num; 193 break; 194 case OPT_BADSIG: 195 badsig = 1; 196 break; 197 case OPT_NAMEOPT: 198 if (!set_nameopt(opt_arg())) 199 goto opthelp; 200 break; 201 case OPT_MD: 202 digestname = opt_unknown(); 203 break; 204 case OPT_PROV_CASES: 205 if (!opt_provider(o)) 206 goto end; 207 break; 208 } 209 } 210 211 /* No remaining args. */ 212 argc = opt_num_rest(); 213 if (argc != 0) 214 goto opthelp; 215 216 if (digestname != NULL) { 217 if (!opt_md(digestname, &digest)) 218 goto opthelp; 219 } 220 x = load_crl(infile, informat, 1, "CRL"); 221 if (x == NULL) 222 goto end; 223 224 if (do_ver) { 225 if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath, 226 CAstore, noCAstore)) == NULL) 227 goto end; 228 lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file()); 229 if (lookup == NULL) 230 goto end; 231 ctx = X509_STORE_CTX_new(); 232 if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) { 233 BIO_printf(bio_err, "Error initialising X509 store\n"); 234 goto end; 235 } 236 237 xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509, 238 X509_CRL_get_issuer(x)); 239 if (xobj == NULL) { 240 BIO_printf(bio_err, "Error getting CRL issuer certificate\n"); 241 goto end; 242 } 243 pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj)); 244 X509_OBJECT_free(xobj); 245 if (pkey == NULL) { 246 BIO_printf(bio_err, "Error getting CRL issuer public key\n"); 247 goto end; 248 } 249 i = X509_CRL_verify(x, pkey); 250 EVP_PKEY_free(pkey); 251 if (i < 0) 252 goto end; 253 if (i == 0) 254 BIO_printf(bio_err, "verify failure\n"); 255 else 256 BIO_printf(bio_err, "verify OK\n"); 257 } 258 259 if (crldiff != NULL) { 260 X509_CRL *newcrl, *delta; 261 if (!keyfile) { 262 BIO_puts(bio_err, "Missing CRL signing key\n"); 263 goto end; 264 } 265 newcrl = load_crl(crldiff, informat, 0, "other CRL"); 266 if (!newcrl) 267 goto end; 268 pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key"); 269 if (pkey == NULL) { 270 X509_CRL_free(newcrl); 271 goto end; 272 } 273 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0); 274 X509_CRL_free(newcrl); 275 EVP_PKEY_free(pkey); 276 if (delta) { 277 X509_CRL_free(x); 278 x = delta; 279 } else { 280 BIO_puts(bio_err, "Error creating delta CRL\n"); 281 goto end; 282 } 283 } 284 285 if (badsig) { 286 const ASN1_BIT_STRING *sig; 287 288 X509_CRL_get0_signature(x, &sig, NULL); 289 corrupt_signature(sig); 290 } 291 292 if (num) { 293 for (i = 1; i <= num; i++) { 294 if (issuer == i) { 295 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x)); 296 } 297 if (crlnumber == i) { 298 ASN1_INTEGER *crlnum; 299 300 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL); 301 BIO_printf(bio_out, "crlNumber="); 302 if (crlnum) { 303 BIO_puts(bio_out, "0x"); 304 i2a_ASN1_INTEGER(bio_out, crlnum); 305 ASN1_INTEGER_free(crlnum); 306 } else { 307 BIO_puts(bio_out, "<NONE>"); 308 } 309 BIO_printf(bio_out, "\n"); 310 } 311 if (hash == i) { 312 int ok; 313 unsigned long hash_value = 314 X509_NAME_hash_ex(X509_CRL_get_issuer(x), app_get0_libctx(), 315 app_get0_propq(), &ok); 316 317 if (num > 1) 318 BIO_printf(bio_out, "issuer name hash="); 319 if (ok) { 320 BIO_printf(bio_out, "%08lx\n", hash_value); 321 } else { 322 BIO_puts(bio_out, "<ERROR>"); 323 goto end; 324 } 325 } 326 #ifndef OPENSSL_NO_MD5 327 if (hash_old == i) { 328 if (num > 1) 329 BIO_printf(bio_out, "issuer name old hash="); 330 BIO_printf(bio_out, "%08lx\n", 331 X509_NAME_hash_old(X509_CRL_get_issuer(x))); 332 } 333 #endif 334 if (lastupdate == i) { 335 BIO_printf(bio_out, "lastUpdate="); 336 ASN1_TIME_print_ex(bio_out, X509_CRL_get0_lastUpdate(x), dateopt); 337 BIO_printf(bio_out, "\n"); 338 } 339 if (nextupdate == i) { 340 BIO_printf(bio_out, "nextUpdate="); 341 if (X509_CRL_get0_nextUpdate(x)) 342 ASN1_TIME_print_ex(bio_out, X509_CRL_get0_nextUpdate(x), dateopt); 343 else 344 BIO_printf(bio_out, "NONE"); 345 BIO_printf(bio_out, "\n"); 346 } 347 if (fingerprint == i) { 348 int j; 349 unsigned int n; 350 unsigned char md[EVP_MAX_MD_SIZE]; 351 352 if (!X509_CRL_digest(x, digest, md, &n)) { 353 BIO_printf(bio_err, "out of memory\n"); 354 goto end; 355 } 356 BIO_printf(bio_out, "%s Fingerprint=", 357 EVP_MD_get0_name(digest)); 358 for (j = 0; j < (int)n; j++) { 359 BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n) 360 ? '\n' : ':'); 361 } 362 } 363 } 364 } 365 out = bio_open_default(outfile, 'w', outformat); 366 if (out == NULL) 367 goto end; 368 369 if (text) 370 X509_CRL_print_ex(out, x, get_nameopt()); 371 372 if (noout) { 373 ret = 0; 374 goto end; 375 } 376 377 if (outformat == FORMAT_ASN1) 378 i = (int)i2d_X509_CRL_bio(out, x); 379 else 380 i = PEM_write_bio_X509_CRL(out, x); 381 if (!i) { 382 BIO_printf(bio_err, "unable to write CRL\n"); 383 goto end; 384 } 385 ret = 0; 386 387 end: 388 if (ret != 0) 389 ERR_print_errors(bio_err); 390 BIO_free_all(out); 391 EVP_MD_free(digest); 392 X509_CRL_free(x); 393 X509_STORE_CTX_free(ctx); 394 X509_STORE_free(store); 395 return ret; 396 } 397