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_ERR = -1, OPT_EOF = 0, OPT_HELP,
  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_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     {"text", OPT_TEXT, '-', "Print out a text format version"},
  45     {"hash", OPT_HASH, '-', "Print hash value"},
  46 #ifndef OPENSSL_NO_MD5
  47     {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
  48 #endif
  49     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
  50     {"", OPT_MD, '-', "Any supported digest"},
  51
  52     OPT_SECTION("CRL"),
  53     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  54     {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"},
  55     {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"},
  56     {"noout", OPT_NOOUT, '-', "No CRL output"},
  57     {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"},
  58     {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"},
  59     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of loaded CRL signature (for test)" },
  60     {"gendelta", OPT_GENDELTA, '<', "Other CRL to compare/diff to the Input one"},
  61
  62     OPT_SECTION("Certificate"),
  63     {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"},
  64     {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"},
  65     {"CAstore", OPT_CASTORE, ':', "Verify CRL using certificates in store URI"},
  66     {"no-CAfile", OPT_NOCAFILE, '-',
  67      "Do not load the default certificates file"},
  68     {"no-CApath", OPT_NOCAPATH, '-',
  69      "Do not load certificates from the default certificates directory"},
  70     {"no-CAstore", OPT_NOCASTORE, '-',
  71      "Do not load certificates from the default certificates store"},
  72     OPT_PROV_OPTIONS,
  73     {NULL}
  74 };
  75
  76 int crl_main(int argc, char **argv)
  77 {
  78     X509_CRL *x = NULL;
  79     BIO *out = NULL;
  80     X509_STORE *store = NULL;
  81     X509_STORE_CTX *ctx = NULL;
  82     X509_LOOKUP *lookup = NULL;
  83     X509_OBJECT *xobj = NULL;
  84     EVP_PKEY *pkey;
  85     const EVP_MD *digest = EVP_sha1();
  86     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
  87     char *digestname = NULL;
  88     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL, *prog;
  89     OPTION_CHOICE o;
  90     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
  91     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
  92     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
  93     int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0, noCAstore = 0;
  94     int i;
  95 #ifndef OPENSSL_NO_MD5
  96     int hash_old = 0;
  97 #endif
  98
  99     prog = opt_init(argc, argv, crl_options);
 100     while ((o = opt_next()) != OPT_EOF) {
 101         switch (o) {
 102         case OPT_EOF:
 103         case OPT_ERR:
 104  opthelp:
 105             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 106             goto end;
 107         case OPT_HELP:
 108             opt_help(crl_options);
 109             ret = 0;
 110             goto end;
 111         case OPT_INFORM:
 112             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 113                 goto opthelp;
 114             break;
 115         case OPT_IN:
 116             infile = opt_arg();
 117             break;
 118         case OPT_OUTFORM:
 119             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 120                 goto opthelp;
 121             break;
 122         case OPT_OUT:
 123             outfile = opt_arg();
 124             break;
 125         case OPT_KEYFORM:
 126             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 127                 goto opthelp;
 128             break;
 129         case OPT_KEY:
 130             keyfile = opt_arg();
 131             break;
 132         case OPT_GENDELTA:
 133             crldiff = opt_arg();
 134             break;
 135         case OPT_CAPATH:
 136             CApath = opt_arg();
 137             do_ver = 1;
 138             break;
 139         case OPT_CAFILE:
 140             CAfile = opt_arg();
 141             do_ver = 1;
 142             break;
 143         case OPT_CASTORE:
 144             CAstore = opt_arg();
 145             do_ver = 1;
 146             break;
 147         case OPT_NOCAPATH:
 148             noCApath =  1;
 149             break;
 150         case OPT_NOCAFILE:
 151             noCAfile =  1;
 152             break;
 153         case OPT_NOCASTORE:
 154             noCAstore =  1;
 155             break;
 156         case OPT_HASH_OLD:
 157 #ifndef OPENSSL_NO_MD5
 158             hash_old = ++num;
 159 #endif
 160             break;
 161         case OPT_VERIFY:
 162             do_ver = 1;
 163             break;
 164         case OPT_TEXT:
 165             text = 1;
 166             break;
 167         case OPT_HASH:
 168             hash = ++num;
 169             break;
 170         case OPT_ISSUER:
 171             issuer = ++num;
 172             break;
 173         case OPT_LASTUPDATE:
 174             lastupdate = ++num;
 175             break;
 176         case OPT_NEXTUPDATE:
 177             nextupdate = ++num;
 178             break;
 179         case OPT_NOOUT:
 180             noout = ++num;
 181             break;
 182         case OPT_FINGERPRINT:
 183             fingerprint = ++num;
 184             break;
 185         case OPT_CRLNUMBER:
 186             crlnumber = ++num;
 187             break;
 188         case OPT_BADSIG:
 189             badsig = 1;
 190             break;
 191         case OPT_NAMEOPT:
 192             if (!set_nameopt(opt_arg()))
 193                 goto opthelp;
 194             break;
 195         case OPT_MD:
 196             digestname = opt_unknown();
 197             break;
 198         case OPT_PROV_CASES:
 199             if (!opt_provider(o))
 200                 goto end;
 201             break;
 202         }
 203     }
 204
 205     /* No remaining args. */
 206     argc = opt_num_rest();
 207     if (argc != 0)
 208         goto opthelp;
 209
 210     if (digestname != NULL && !opt_md(digestname, &digest))
 211         goto opthelp;
 212     x = load_crl(infile, "CRL");
 213     if (x == NULL)
 214         goto end;
 215
 216     if (do_ver) {
 217         if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 218                                   CAstore, noCAstore)) == NULL)
 219             goto end;
 220         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 221         if (lookup == NULL)
 222             goto end;
 223         ctx = X509_STORE_CTX_new();
 224         if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
 225             BIO_printf(bio_err, "Error initialising X509 store\n");
 226             goto end;
 227         }
 228
 229         xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
 230                                                  X509_CRL_get_issuer(x));
 231         if (xobj == NULL) {
 232             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 233             goto end;
 234         }
 235         pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
 236         X509_OBJECT_free(xobj);
 237         if (pkey == NULL) {
 238             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 239             goto end;
 240         }
 241         i = X509_CRL_verify(x, pkey);
 242         EVP_PKEY_free(pkey);
 243         if (i < 0)
 244             goto end;
 245         if (i == 0)
 246             BIO_printf(bio_err, "verify failure\n");
 247         else
 248             BIO_printf(bio_err, "verify OK\n");
 249     }
 250
 251     if (crldiff) {
 252         X509_CRL *newcrl, *delta;
 253         if (!keyfile) {
 254             BIO_puts(bio_err, "Missing CRL signing key\n");
 255             goto end;
 256         }
 257         newcrl = load_crl(crldiff, "other CRL");
 258         if (!newcrl)
 259             goto end;
 260         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 261         if (pkey == NULL) {
 262             X509_CRL_free(newcrl);
 263             goto end;
 264         }
 265         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 266         X509_CRL_free(newcrl);
 267         EVP_PKEY_free(pkey);
 268         if (delta) {
 269             X509_CRL_free(x);
 270             x = delta;
 271         } else {
 272             BIO_puts(bio_err, "Error creating delta CRL\n");
 273             goto end;
 274         }
 275     }
 276
 277     if (badsig) {
 278         const ASN1_BIT_STRING *sig;
 279
 280         X509_CRL_get0_signature(x, &sig, NULL);
 281         corrupt_signature(sig);
 282     }
 283
 284     if (num) {
 285         for (i = 1; i <= num; i++) {
 286             if (issuer == i) {
 287                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 288                            get_nameopt());
 289             }
 290             if (crlnumber == i) {
 291                 ASN1_INTEGER *crlnum;
 292
 293                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 294                 BIO_printf(bio_out, "crlNumber=");
 295                 if (crlnum) {
 296                     BIO_puts(bio_out, "0x");
 297                     i2a_ASN1_INTEGER(bio_out, crlnum);
 298                     ASN1_INTEGER_free(crlnum);
 299                 } else {
 300                     BIO_puts(bio_out, "<NONE>");
 301                 }
 302                 BIO_printf(bio_out, "\n");
 303             }
 304             if (hash == i) {
 305                 int ok;
 306                 unsigned long hash_value =
 307                     X509_NAME_hash_ex(X509_CRL_get_issuer(x), app_get0_libctx(),
 308                                       app_get0_propq(), &ok);
 309
 310                 BIO_printf(bio_out, "issuer name hash=");
 311                 if (ok)
 312                     BIO_printf(bio_out, "%08lx\n", hash_value);
 313                 else
 314                     BIO_puts(bio_out, "<ERROR>");
 315             }
 316 #ifndef OPENSSL_NO_MD5
 317             if (hash_old == i) {
 318                 BIO_printf(bio_out, "issuer name old hash=");
 319                 BIO_printf(bio_out, "%08lx\n",
 320                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 321             }
 322 #endif
 323             if (lastupdate == i) {
 324                 BIO_printf(bio_out, "lastUpdate=");
 325                 ASN1_TIME_print(bio_out, X509_CRL_get0_lastUpdate(x));
 326                 BIO_printf(bio_out, "\n");
 327             }
 328             if (nextupdate == i) {
 329                 BIO_printf(bio_out, "nextUpdate=");
 330                 if (X509_CRL_get0_nextUpdate(x))
 331                     ASN1_TIME_print(bio_out, X509_CRL_get0_nextUpdate(x));
 332                 else
 333                     BIO_printf(bio_out, "NONE");
 334                 BIO_printf(bio_out, "\n");
 335             }
 336             if (fingerprint == i) {
 337                 int j;
 338                 unsigned int n;
 339                 unsigned char md[EVP_MAX_MD_SIZE];
 340
 341                 if (!X509_CRL_digest(x, digest, md, &n)) {
 342                     BIO_printf(bio_err, "out of memory\n");
 343                     goto end;
 344                 }
 345                 BIO_printf(bio_out, "%s Fingerprint=",
 346                            OBJ_nid2sn(EVP_MD_type(digest)));
 347                 for (j = 0; j < (int)n; j++) {
 348                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 349                                ? '\n' : ':');
 350                 }
 351             }
 352         }
 353     }
 354     out = bio_open_default(outfile, 'w', outformat);
 355     if (out == NULL)
 356         goto end;
 357
 358     if (text)
 359         X509_CRL_print_ex(out, x, get_nameopt());
 360
 361     if (noout) {
 362         ret = 0;
 363         goto end;
 364     }
 365
 366     if (outformat == FORMAT_ASN1)
 367         i = (int)i2d_X509_CRL_bio(out, x);
 368     else
 369         i = PEM_write_bio_X509_CRL(out, x);
 370     if (!i) {
 371         BIO_printf(bio_err, "unable to write CRL\n");
 372         goto end;
 373     }
 374     ret = 0;
 375
 376  end:
 377     if (ret != 0)
 378         ERR_print_errors(bio_err);
 379     BIO_free_all(out);
 380     X509_CRL_free(x);
 381     X509_STORE_CTX_free(ctx);
 382     X509_STORE_free(store);
 383     return ret;
 384 }