apps/crl.c

   1 /*
   2  * Copyright 1995-2018 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', "Input format; default PEM"},
  38     {"key", OPT_KEY, '<', "CRL signing Private key to use"},
  39     {"keyform", OPT_KEYFORM, 'F', "Private key file format (PEM or ENGINE)"},
  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', "Various certificate name 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     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL, *prog;
  88     OPTION_CHOICE o;
  89     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
  90     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
  91     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
  92     int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0, noCAstore = 0;
  93     int i;
  94 #ifndef OPENSSL_NO_MD5
  95     int hash_old = 0;
  96 #endif
  97
  98     prog = opt_init(argc, argv, crl_options);
  99     while ((o = opt_next()) != OPT_EOF) {
 100         switch (o) {
 101         case OPT_EOF:
 102         case OPT_ERR:
 103  opthelp:
 104             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 105             goto end;
 106         case OPT_HELP:
 107             opt_help(crl_options);
 108             ret = 0;
 109             goto end;
 110         case OPT_INFORM:
 111             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 112                 goto opthelp;
 113             break;
 114         case OPT_IN:
 115             infile = opt_arg();
 116             break;
 117         case OPT_OUTFORM:
 118             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 119                 goto opthelp;
 120             break;
 121         case OPT_OUT:
 122             outfile = opt_arg();
 123             break;
 124         case OPT_KEYFORM:
 125             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 126                 goto opthelp;
 127             break;
 128         case OPT_KEY:
 129             keyfile = opt_arg();
 130             break;
 131         case OPT_GENDELTA:
 132             crldiff = opt_arg();
 133             break;
 134         case OPT_CAPATH:
 135             CApath = opt_arg();
 136             do_ver = 1;
 137             break;
 138         case OPT_CAFILE:
 139             CAfile = opt_arg();
 140             do_ver = 1;
 141             break;
 142         case OPT_CASTORE:
 143             CAstore = opt_arg();
 144             do_ver = 1;
 145             break;
 146         case OPT_NOCAPATH:
 147             noCApath =  1;
 148             break;
 149         case OPT_NOCAFILE:
 150             noCAfile =  1;
 151             break;
 152         case OPT_NOCASTORE:
 153             noCAstore =  1;
 154             break;
 155         case OPT_HASH_OLD:
 156 #ifndef OPENSSL_NO_MD5
 157             hash_old = ++num;
 158 #endif
 159             break;
 160         case OPT_VERIFY:
 161             do_ver = 1;
 162             break;
 163         case OPT_TEXT:
 164             text = 1;
 165             break;
 166         case OPT_HASH:
 167             hash = ++num;
 168             break;
 169         case OPT_ISSUER:
 170             issuer = ++num;
 171             break;
 172         case OPT_LASTUPDATE:
 173             lastupdate = ++num;
 174             break;
 175         case OPT_NEXTUPDATE:
 176             nextupdate = ++num;
 177             break;
 178         case OPT_NOOUT:
 179             noout = ++num;
 180             break;
 181         case OPT_FINGERPRINT:
 182             fingerprint = ++num;
 183             break;
 184         case OPT_CRLNUMBER:
 185             crlnumber = ++num;
 186             break;
 187         case OPT_BADSIG:
 188             badsig = 1;
 189             break;
 190         case OPT_NAMEOPT:
 191             if (!set_nameopt(opt_arg()))
 192                 goto opthelp;
 193             break;
 194         case OPT_MD:
 195             if (!opt_md(opt_unknown(), &digest))
 196                 goto opthelp;
 197             break;
 198         case OPT_PROV_CASES:
 199             if (!opt_provider(o))
 200                 goto end;
 201             break;
 202         }
 203     }
 204     argc = opt_num_rest();
 205     if (argc != 0)
 206         goto opthelp;
 207
 208     x = load_crl(infile, informat);
 209     if (x == NULL)
 210         goto end;
 211
 212     if (do_ver) {
 213         if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 214                                   CAstore, noCAstore)) == NULL)
 215             goto end;
 216         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 217         if (lookup == NULL)
 218             goto end;
 219         ctx = X509_STORE_CTX_new();
 220         if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
 221             BIO_printf(bio_err, "Error initialising X509 store\n");
 222             goto end;
 223         }
 224
 225         xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
 226                                                  X509_CRL_get_issuer(x));
 227         if (xobj == NULL) {
 228             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 229             goto end;
 230         }
 231         pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
 232         X509_OBJECT_free(xobj);
 233         if (pkey == NULL) {
 234             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 235             goto end;
 236         }
 237         i = X509_CRL_verify(x, pkey);
 238         EVP_PKEY_free(pkey);
 239         if (i < 0)
 240             goto end;
 241         if (i == 0)
 242             BIO_printf(bio_err, "verify failure\n");
 243         else
 244             BIO_printf(bio_err, "verify OK\n");
 245     }
 246
 247     if (crldiff) {
 248         X509_CRL *newcrl, *delta;
 249         if (!keyfile) {
 250             BIO_puts(bio_err, "Missing CRL signing key\n");
 251             goto end;
 252         }
 253         newcrl = load_crl(crldiff, informat);
 254         if (!newcrl)
 255             goto end;
 256         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 257         if (pkey == NULL) {
 258             X509_CRL_free(newcrl);
 259             goto end;
 260         }
 261         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 262         X509_CRL_free(newcrl);
 263         EVP_PKEY_free(pkey);
 264         if (delta) {
 265             X509_CRL_free(x);
 266             x = delta;
 267         } else {
 268             BIO_puts(bio_err, "Error creating delta CRL\n");
 269             goto end;
 270         }
 271     }
 272
 273     if (badsig) {
 274         const ASN1_BIT_STRING *sig;
 275
 276         X509_CRL_get0_signature(x, &sig, NULL);
 277         corrupt_signature(sig);
 278     }
 279
 280     if (num) {
 281         for (i = 1; i <= num; i++) {
 282             if (issuer == i) {
 283                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 284                            get_nameopt());
 285             }
 286             if (crlnumber == i) {
 287                 ASN1_INTEGER *crlnum;
 288                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 289                 BIO_printf(bio_out, "crlNumber=");
 290                 if (crlnum) {
 291                     i2a_ASN1_INTEGER(bio_out, crlnum);
 292                     ASN1_INTEGER_free(crlnum);
 293                 } else
 294                     BIO_puts(bio_out, "<NONE>");
 295                 BIO_printf(bio_out, "\n");
 296             }
 297             if (hash == i) {
 298                 BIO_printf(bio_out, "%08lx\n",
 299                            X509_NAME_hash(X509_CRL_get_issuer(x)));
 300             }
 301 #ifndef OPENSSL_NO_MD5
 302             if (hash_old == i) {
 303                 BIO_printf(bio_out, "%08lx\n",
 304                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 305             }
 306 #endif
 307             if (lastupdate == i) {
 308                 BIO_printf(bio_out, "lastUpdate=");
 309                 ASN1_TIME_print(bio_out, X509_CRL_get0_lastUpdate(x));
 310                 BIO_printf(bio_out, "\n");
 311             }
 312             if (nextupdate == i) {
 313                 BIO_printf(bio_out, "nextUpdate=");
 314                 if (X509_CRL_get0_nextUpdate(x))
 315                     ASN1_TIME_print(bio_out, X509_CRL_get0_nextUpdate(x));
 316                 else
 317                     BIO_printf(bio_out, "NONE");
 318                 BIO_printf(bio_out, "\n");
 319             }
 320             if (fingerprint == i) {
 321                 int j;
 322                 unsigned int n;
 323                 unsigned char md[EVP_MAX_MD_SIZE];
 324
 325                 if (!X509_CRL_digest(x, digest, md, &n)) {
 326                     BIO_printf(bio_err, "out of memory\n");
 327                     goto end;
 328                 }
 329                 BIO_printf(bio_out, "%s Fingerprint=",
 330                            OBJ_nid2sn(EVP_MD_type(digest)));
 331                 for (j = 0; j < (int)n; j++) {
 332                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 333                                ? '\n' : ':');
 334                 }
 335             }
 336         }
 337     }
 338     out = bio_open_default(outfile, 'w', outformat);
 339     if (out == NULL)
 340         goto end;
 341
 342     if (text)
 343         X509_CRL_print_ex(out, x, get_nameopt());
 344
 345     if (noout) {
 346         ret = 0;
 347         goto end;
 348     }
 349
 350     if (outformat == FORMAT_ASN1)
 351         i = (int)i2d_X509_CRL_bio(out, x);
 352     else
 353         i = PEM_write_bio_X509_CRL(out, x);
 354     if (!i) {
 355         BIO_printf(bio_err, "unable to write CRL\n");
 356         goto end;
 357     }
 358     ret = 0;
 359
 360  end:
 361     if (ret != 0)
 362         ERR_print_errors(bio_err);
 363     BIO_free_all(out);
 364     X509_CRL_free(x);
 365     X509_STORE_CTX_free(ctx);
 366     X509_STORE_free(store);
 367     return ret;
 368 }