apps/crl.c

   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 }