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     opt_set_unknown_name("digest");
 102     prog = opt_init(argc, argv, crl_options);
 103     while ((o = opt_next()) != OPT_EOF) {
 104         switch (o) {
 105         case OPT_EOF:
 106         case OPT_ERR:
 107  opthelp:
 108             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 109             goto end;
 110         case OPT_HELP:
 111             opt_help(crl_options);
 112             ret = 0;
 113             goto end;
 114         case OPT_INFORM:
 115             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 116                 goto opthelp;
 117             break;
 118         case OPT_IN:
 119             infile = opt_arg();
 120             break;
 121         case OPT_OUTFORM:
 122             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 123                 goto opthelp;
 124             break;
 125         case OPT_OUT:
 126             outfile = opt_arg();
 127             break;
 128         case OPT_KEYFORM:
 129             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 130                 goto opthelp;
 131             break;
 132         case OPT_KEY:
 133             keyfile = opt_arg();
 134             break;
 135         case OPT_GENDELTA:
 136             crldiff = opt_arg();
 137             break;
 138         case OPT_CAPATH:
 139             CApath = opt_arg();
 140             do_ver = 1;
 141             break;
 142         case OPT_CAFILE:
 143             CAfile = opt_arg();
 144             do_ver = 1;
 145             break;
 146         case OPT_CASTORE:
 147             CAstore = opt_arg();
 148             do_ver = 1;
 149             break;
 150         case OPT_NOCAPATH:
 151             noCApath =  1;
 152             break;
 153         case OPT_NOCAFILE:
 154             noCAfile =  1;
 155             break;
 156         case OPT_NOCASTORE:
 157             noCAstore =  1;
 158             break;
 159         case OPT_HASH_OLD:
 160 #ifndef OPENSSL_NO_MD5
 161             hash_old = ++num;
 162 #endif
 163             break;
 164         case OPT_VERIFY:
 165             do_ver = 1;
 166             break;
 167         case OPT_DATEOPT:
 168             if (!set_dateopt(&dateopt, opt_arg()))
 169                 goto opthelp;
 170             break;
 171         case OPT_TEXT:
 172             text = 1;
 173             break;
 174         case OPT_HASH:
 175             hash = ++num;
 176             break;
 177         case OPT_ISSUER:
 178             issuer = ++num;
 179             break;
 180         case OPT_LASTUPDATE:
 181             lastupdate = ++num;
 182             break;
 183         case OPT_NEXTUPDATE:
 184             nextupdate = ++num;
 185             break;
 186         case OPT_NOOUT:
 187             noout = 1;
 188             break;
 189         case OPT_FINGERPRINT:
 190             fingerprint = ++num;
 191             break;
 192         case OPT_CRLNUMBER:
 193             crlnumber = ++num;
 194             break;
 195         case OPT_BADSIG:
 196             badsig = 1;
 197             break;
 198         case OPT_NAMEOPT:
 199             if (!set_nameopt(opt_arg()))
 200                 goto opthelp;
 201             break;
 202         case OPT_MD:
 203             digestname = opt_unknown();
 204             break;
 205         case OPT_PROV_CASES:
 206             if (!opt_provider(o))
 207                 goto end;
 208             break;
 209         }
 210     }
 211
 212     /* No remaining args. */
 213     if (!opt_check_rest_arg(NULL))
 214         goto opthelp;
 215
 216     if (!opt_md(digestname, &digest))
 217         goto opthelp;
 218     x = load_crl(infile, informat, 1, "CRL");
 219     if (x == NULL)
 220         goto end;
 221
 222     if (do_ver) {
 223         if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 224                                   CAstore, noCAstore)) == NULL)
 225             goto end;
 226         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 227         if (lookup == NULL)
 228             goto end;
 229         ctx = X509_STORE_CTX_new();
 230         if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
 231             BIO_printf(bio_err, "Error initialising X509 store\n");
 232             goto end;
 233         }
 234
 235         xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
 236                                                  X509_CRL_get_issuer(x));
 237         if (xobj == NULL) {
 238             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 239             goto end;
 240         }
 241         pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
 242         X509_OBJECT_free(xobj);
 243         if (pkey == NULL) {
 244             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 245             goto end;
 246         }
 247         i = X509_CRL_verify(x, pkey);
 248         EVP_PKEY_free(pkey);
 249         if (i < 0)
 250             goto end;
 251         if (i == 0)
 252             BIO_printf(bio_err, "verify failure\n");
 253         else
 254             BIO_printf(bio_err, "verify OK\n");
 255     }
 256
 257     if (crldiff != NULL) {
 258         X509_CRL *newcrl, *delta;
 259         if (!keyfile) {
 260             BIO_puts(bio_err, "Missing CRL signing key\n");
 261             goto end;
 262         }
 263         newcrl = load_crl(crldiff, informat, 0, "other CRL");
 264         if (!newcrl)
 265             goto end;
 266         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 267         if (pkey == NULL) {
 268             X509_CRL_free(newcrl);
 269             goto end;
 270         }
 271         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 272         X509_CRL_free(newcrl);
 273         EVP_PKEY_free(pkey);
 274         if (delta) {
 275             X509_CRL_free(x);
 276             x = delta;
 277         } else {
 278             BIO_puts(bio_err, "Error creating delta CRL\n");
 279             goto end;
 280         }
 281     }
 282
 283     if (badsig) {
 284         const ASN1_BIT_STRING *sig;
 285
 286         X509_CRL_get0_signature(x, &sig, NULL);
 287         corrupt_signature(sig);
 288     }
 289
 290     if (num) {
 291         for (i = 1; i <= num; i++) {
 292             if (issuer == i) {
 293                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x));
 294             }
 295             if (crlnumber == i) {
 296                 ASN1_INTEGER *crlnum;
 297
 298                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 299                 BIO_printf(bio_out, "crlNumber=");
 300                 if (crlnum) {
 301                     BIO_puts(bio_out, "0x");
 302                     i2a_ASN1_INTEGER(bio_out, crlnum);
 303                     ASN1_INTEGER_free(crlnum);
 304                 } else {
 305                     BIO_puts(bio_out, "<NONE>");
 306                 }
 307                 BIO_printf(bio_out, "\n");
 308             }
 309             if (hash == i) {
 310                 int ok;
 311                 unsigned long hash_value =
 312                     X509_NAME_hash_ex(X509_CRL_get_issuer(x), app_get0_libctx(),
 313                                       app_get0_propq(), &ok);
 314
 315                 if (num > 1)
 316                     BIO_printf(bio_out, "issuer name hash=");
 317                 if (ok) {
 318                     BIO_printf(bio_out, "%08lx\n", hash_value);
 319                 } else {
 320                     BIO_puts(bio_out, "<ERROR>");
 321                     goto end;
 322                 }
 323             }
 324 #ifndef OPENSSL_NO_MD5
 325             if (hash_old == i) {
 326                 if (num > 1)
 327                     BIO_printf(bio_out, "issuer name old hash=");
 328                 BIO_printf(bio_out, "%08lx\n",
 329                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 330             }
 331 #endif
 332             if (lastupdate == i) {
 333                 BIO_printf(bio_out, "lastUpdate=");
 334                 ASN1_TIME_print_ex(bio_out, X509_CRL_get0_lastUpdate(x), dateopt);
 335                 BIO_printf(bio_out, "\n");
 336             }
 337             if (nextupdate == i) {
 338                 BIO_printf(bio_out, "nextUpdate=");
 339                 if (X509_CRL_get0_nextUpdate(x))
 340                     ASN1_TIME_print_ex(bio_out, X509_CRL_get0_nextUpdate(x), dateopt);
 341                 else
 342                     BIO_printf(bio_out, "NONE");
 343                 BIO_printf(bio_out, "\n");
 344             }
 345             if (fingerprint == i) {
 346                 int j;
 347                 unsigned int n;
 348                 unsigned char md[EVP_MAX_MD_SIZE];
 349
 350                 if (!X509_CRL_digest(x, digest, md, &n)) {
 351                     BIO_printf(bio_err, "out of memory\n");
 352                     goto end;
 353                 }
 354                 BIO_printf(bio_out, "%s Fingerprint=",
 355                            EVP_MD_get0_name(digest));
 356                 for (j = 0; j < (int)n; j++) {
 357                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 358                                ? '\n' : ':');
 359                 }
 360             }
 361         }
 362     }
 363     out = bio_open_default(outfile, 'w', outformat);
 364     if (out == NULL)
 365         goto end;
 366
 367     if (text)
 368         X509_CRL_print_ex(out, x, get_nameopt());
 369
 370     if (noout) {
 371         ret = 0;
 372         goto end;
 373     }
 374
 375     if (outformat == FORMAT_ASN1)
 376         i = (int)i2d_X509_CRL_bio(out, x);
 377     else
 378         i = PEM_write_bio_X509_CRL(out, x);
 379     if (!i) {
 380         BIO_printf(bio_err, "unable to write CRL\n");
 381         goto end;
 382     }
 383     ret = 0;
 384
 385  end:
 386     if (ret != 0)
 387         ERR_print_errors(bio_err);
 388     BIO_free_all(out);
 389     EVP_MD_free(digest);
 390     X509_CRL_free(x);
 391     X509_STORE_CTX_free(ctx);
 392     X509_STORE_free(store);
 393     return ret;
 394 }