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,
  26     OPT_NOCAPATH, OPT_NOCAFILE, OPT_VERIFY, OPT_TEXT, OPT_HASH, OPT_HASH_OLD,
  27     OPT_NOOUT, OPT_NAMEOPT, OPT_MD
  28 } OPTION_CHOICE;
  29
  30 const OPTIONS crl_options[] = {
  31     {"help", OPT_HELP, '-', "Display this summary"},
  32     {"inform", OPT_INFORM, 'F', "Input format; default PEM"},
  33     {"in", OPT_IN, '<', "Input file - default stdin"},
  34     {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
  35     {"out", OPT_OUT, '>', "output file - default stdout"},
  36     {"keyform", OPT_KEYFORM, 'F', "Private key file format (PEM or ENGINE)"},
  37     {"key", OPT_KEY, '<', "CRL signing Private key to use"},
  38     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  39     {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"},
  40     {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"},
  41     {"noout", OPT_NOOUT, '-', "No CRL output"},
  42     {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"},
  43     {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"},
  44     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of loaded CRL signature (for test)" },
  45     {"gendelta", OPT_GENDELTA, '<', "Other CRL to compare/diff to the Input one"},
  46     {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"},
  47     {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"},
  48     {"no-CAfile", OPT_NOCAFILE, '-',
  49      "Do not load the default certificates file"},
  50     {"no-CApath", OPT_NOCAPATH, '-',
  51      "Do not load certificates from the default certificates directory"},
  52     {"verify", OPT_VERIFY, '-', "Verify CRL signature"},
  53     {"text", OPT_TEXT, '-', "Print out a text format version"},
  54     {"hash", OPT_HASH, '-', "Print hash value"},
  55     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
  56     {"", OPT_MD, '-', "Any supported digest"},
  57 #ifndef OPENSSL_NO_MD5
  58     {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
  59 #endif
  60     {NULL}
  61 };
  62
  63 int crl_main(int argc, char **argv)
  64 {
  65     X509_CRL *x = NULL;
  66     BIO *out = NULL;
  67     X509_STORE *store = NULL;
  68     X509_STORE_CTX *ctx = NULL;
  69     X509_LOOKUP *lookup = NULL;
  70     X509_OBJECT *xobj = NULL;
  71     EVP_PKEY *pkey;
  72     const EVP_MD *digest = EVP_sha1();
  73     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
  74     const char *CAfile = NULL, *CApath = NULL, *prog;
  75     OPTION_CHOICE o;
  76     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
  77     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
  78     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
  79     int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0;
  80     int i;
  81 #ifndef OPENSSL_NO_MD5
  82     int hash_old = 0;
  83 #endif
  84
  85     prog = opt_init(argc, argv, crl_options);
  86     while ((o = opt_next()) != OPT_EOF) {
  87         switch (o) {
  88         case OPT_EOF:
  89         case OPT_ERR:
  90  opthelp:
  91             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  92             goto end;
  93         case OPT_HELP:
  94             opt_help(crl_options);
  95             ret = 0;
  96             goto end;
  97         case OPT_INFORM:
  98             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
  99                 goto opthelp;
 100             break;
 101         case OPT_IN:
 102             infile = opt_arg();
 103             break;
 104         case OPT_OUTFORM:
 105             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 106                 goto opthelp;
 107             break;
 108         case OPT_OUT:
 109             outfile = opt_arg();
 110             break;
 111         case OPT_KEYFORM:
 112             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 113                 goto opthelp;
 114             break;
 115         case OPT_KEY:
 116             keyfile = opt_arg();
 117             break;
 118         case OPT_GENDELTA:
 119             crldiff = opt_arg();
 120             break;
 121         case OPT_CAPATH:
 122             CApath = opt_arg();
 123             do_ver = 1;
 124             break;
 125         case OPT_CAFILE:
 126             CAfile = opt_arg();
 127             do_ver = 1;
 128             break;
 129         case OPT_NOCAPATH:
 130             noCApath =  1;
 131             break;
 132         case OPT_NOCAFILE:
 133             noCAfile =  1;
 134             break;
 135         case OPT_HASH_OLD:
 136 #ifndef OPENSSL_NO_MD5
 137             hash_old = ++num;
 138 #endif
 139             break;
 140         case OPT_VERIFY:
 141             do_ver = 1;
 142             break;
 143         case OPT_TEXT:
 144             text = 1;
 145             break;
 146         case OPT_HASH:
 147             hash = ++num;
 148             break;
 149         case OPT_ISSUER:
 150             issuer = ++num;
 151             break;
 152         case OPT_LASTUPDATE:
 153             lastupdate = ++num;
 154             break;
 155         case OPT_NEXTUPDATE:
 156             nextupdate = ++num;
 157             break;
 158         case OPT_NOOUT:
 159             noout = ++num;
 160             break;
 161         case OPT_FINGERPRINT:
 162             fingerprint = ++num;
 163             break;
 164         case OPT_CRLNUMBER:
 165             crlnumber = ++num;
 166             break;
 167         case OPT_BADSIG:
 168             badsig = 1;
 169             break;
 170         case OPT_NAMEOPT:
 171             if (!set_nameopt(opt_arg()))
 172                 goto opthelp;
 173             break;
 174         case OPT_MD:
 175             if (!opt_md(opt_unknown(), &digest))
 176                 goto opthelp;
 177         }
 178     }
 179     argc = opt_num_rest();
 180     if (argc != 0)
 181         goto opthelp;
 182
 183     x = load_crl(infile, informat);
 184     if (x == NULL)
 185         goto end;
 186
 187     if (do_ver) {
 188         if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
 189             goto end;
 190         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
 191         if (lookup == NULL)
 192             goto end;
 193         ctx = X509_STORE_CTX_new();
 194         if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
 195             BIO_printf(bio_err, "Error initialising X509 store\n");
 196             goto end;
 197         }
 198
 199         xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
 200                                                  X509_CRL_get_issuer(x));
 201         if (xobj == NULL) {
 202             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
 203             goto end;
 204         }
 205         pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
 206         X509_OBJECT_free(xobj);
 207         if (!pkey) {
 208             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
 209             goto end;
 210         }
 211         i = X509_CRL_verify(x, pkey);
 212         EVP_PKEY_free(pkey);
 213         if (i < 0)
 214             goto end;
 215         if (i == 0)
 216             BIO_printf(bio_err, "verify failure\n");
 217         else
 218             BIO_printf(bio_err, "verify OK\n");
 219     }
 220
 221     if (crldiff) {
 222         X509_CRL *newcrl, *delta;
 223         if (!keyfile) {
 224             BIO_puts(bio_err, "Missing CRL signing key\n");
 225             goto end;
 226         }
 227         newcrl = load_crl(crldiff, informat);
 228         if (!newcrl)
 229             goto end;
 230         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
 231         if (!pkey) {
 232             X509_CRL_free(newcrl);
 233             goto end;
 234         }
 235         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
 236         X509_CRL_free(newcrl);
 237         EVP_PKEY_free(pkey);
 238         if (delta) {
 239             X509_CRL_free(x);
 240             x = delta;
 241         } else {
 242             BIO_puts(bio_err, "Error creating delta CRL\n");
 243             goto end;
 244         }
 245     }
 246
 247     if (badsig) {
 248         const ASN1_BIT_STRING *sig;
 249
 250         X509_CRL_get0_signature(x, &sig, NULL);
 251         corrupt_signature(sig);
 252     }
 253
 254     if (num) {
 255         for (i = 1; i <= num; i++) {
 256             if (issuer == i) {
 257                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
 258                            get_nameopt());
 259             }
 260             if (crlnumber == i) {
 261                 ASN1_INTEGER *crlnum;
 262                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
 263                 BIO_printf(bio_out, "crlNumber=");
 264                 if (crlnum) {
 265                     i2a_ASN1_INTEGER(bio_out, crlnum);
 266                     ASN1_INTEGER_free(crlnum);
 267                 } else
 268                     BIO_puts(bio_out, "<NONE>");
 269                 BIO_printf(bio_out, "\n");
 270             }
 271             if (hash == i) {
 272                 BIO_printf(bio_out, "%08lx\n",
 273                            X509_NAME_hash(X509_CRL_get_issuer(x)));
 274             }
 275 #ifndef OPENSSL_NO_MD5
 276             if (hash_old == i) {
 277                 BIO_printf(bio_out, "%08lx\n",
 278                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
 279             }
 280 #endif
 281             if (lastupdate == i) {
 282                 BIO_printf(bio_out, "lastUpdate=");
 283                 ASN1_TIME_print(bio_out, X509_CRL_get0_lastUpdate(x));
 284                 BIO_printf(bio_out, "\n");
 285             }
 286             if (nextupdate == i) {
 287                 BIO_printf(bio_out, "nextUpdate=");
 288                 if (X509_CRL_get0_nextUpdate(x))
 289                     ASN1_TIME_print(bio_out, X509_CRL_get0_nextUpdate(x));
 290                 else
 291                     BIO_printf(bio_out, "NONE");
 292                 BIO_printf(bio_out, "\n");
 293             }
 294             if (fingerprint == i) {
 295                 int j;
 296                 unsigned int n;
 297                 unsigned char md[EVP_MAX_MD_SIZE];
 298
 299                 if (!X509_CRL_digest(x, digest, md, &n)) {
 300                     BIO_printf(bio_err, "out of memory\n");
 301                     goto end;
 302                 }
 303                 BIO_printf(bio_out, "%s Fingerprint=",
 304                            OBJ_nid2sn(EVP_MD_type(digest)));
 305                 for (j = 0; j < (int)n; j++) {
 306                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
 307                                ? '\n' : ':');
 308                 }
 309             }
 310         }
 311     }
 312     out = bio_open_default(outfile, 'w', outformat);
 313     if (out == NULL)
 314         goto end;
 315
 316     if (text)
 317         X509_CRL_print_ex(out, x, get_nameopt());
 318
 319     if (noout) {
 320         ret = 0;
 321         goto end;
 322     }
 323
 324     if (outformat == FORMAT_ASN1)
 325         i = (int)i2d_X509_CRL_bio(out, x);
 326     else
 327         i = PEM_write_bio_X509_CRL(out, x);
 328     if (!i) {
 329         BIO_printf(bio_err, "unable to write CRL\n");
 330         goto end;
 331     }
 332     ret = 0;
 333
 334  end:
 335     if (ret != 0)
 336         ERR_print_errors(bio_err);
 337     BIO_free_all(out);
 338     X509_CRL_free(x);
 339     X509_STORE_CTX_free(ctx);
 340     X509_STORE_free(store);
 341     return ret;
 342 }