| 1 | /*
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| 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <stdlib.h>
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| 12 | #include <string.h>
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| 13 | #include "apps.h"
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| 14 | #include "progs.h"
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| 15 | #include <openssl/bio.h>
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| 16 | #include <openssl/err.h>
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| 17 | #include <openssl/x509.h>
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| 18 | #include <openssl/x509v3.h>
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| 19 | #include <openssl/pem.h>
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| 20 |
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| 21 | typedef enum OPTION_choice {
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| 22 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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| 23 | OPT_INFORM, OPT_IN, OPT_OUTFORM, OPT_OUT, OPT_KEYFORM, OPT_KEY,
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| 24 | OPT_ISSUER, OPT_LASTUPDATE, OPT_NEXTUPDATE, OPT_FINGERPRINT,
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| 25 | OPT_CRLNUMBER, OPT_BADSIG, OPT_GENDELTA, OPT_CAPATH, OPT_CAFILE,
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| 26 | OPT_NOCAPATH, OPT_NOCAFILE, OPT_VERIFY, OPT_TEXT, OPT_HASH, OPT_HASH_OLD,
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| 27 | OPT_NOOUT, OPT_NAMEOPT, OPT_MD
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| 28 | } OPTION_CHOICE;
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| 29 |
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| 30 | const OPTIONS crl_options[] = {
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| 31 | {"help", OPT_HELP, '-', "Display this summary"},
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| 32 | {"inform", OPT_INFORM, 'F', "Input format; default PEM"},
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| 33 | {"in", OPT_IN, '<', "Input file - default stdin"},
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| 34 | {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
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| 35 | {"out", OPT_OUT, '>', "output file - default stdout"},
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| 36 | {"keyform", OPT_KEYFORM, 'F', "Private key file format (PEM or ENGINE)"},
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| 37 | {"key", OPT_KEY, '<', "CRL signing Private key to use"},
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| 38 | {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
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| 39 | {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"},
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| 40 | {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"},
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| 41 | {"noout", OPT_NOOUT, '-', "No CRL output"},
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| 42 | {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"},
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| 43 | {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"},
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| 44 | {"badsig", OPT_BADSIG, '-', "Corrupt last byte of loaded CRL signature (for test)" },
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| 45 | {"gendelta", OPT_GENDELTA, '<', "Other CRL to compare/diff to the Input one"},
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| 46 | {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"},
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| 47 | {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"},
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| 48 | {"no-CAfile", OPT_NOCAFILE, '-',
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| 49 | "Do not load the default certificates file"},
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| 50 | {"no-CApath", OPT_NOCAPATH, '-',
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| 51 | "Do not load certificates from the default certificates directory"},
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| 52 | {"verify", OPT_VERIFY, '-', "Verify CRL signature"},
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| 53 | {"text", OPT_TEXT, '-', "Print out a text format version"},
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| 54 | {"hash", OPT_HASH, '-', "Print hash value"},
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| 55 | {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
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| 56 | {"", OPT_MD, '-', "Any supported digest"},
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| 57 | #ifndef OPENSSL_NO_MD5
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| 58 | {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
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| 59 | #endif
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| 60 | {NULL}
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| 61 | };
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| 62 |
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| 63 | int crl_main(int argc, char **argv)
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| 64 | {
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| 65 | X509_CRL *x = NULL;
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| 66 | BIO *out = NULL;
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| 67 | X509_STORE *store = NULL;
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| 68 | X509_STORE_CTX *ctx = NULL;
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| 69 | X509_LOOKUP *lookup = NULL;
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| 70 | X509_OBJECT *xobj = NULL;
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| 71 | EVP_PKEY *pkey;
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| 72 | const EVP_MD *digest = EVP_sha1();
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| 73 | char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
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| 74 | const char *CAfile = NULL, *CApath = NULL, *prog;
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| 75 | OPTION_CHOICE o;
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| 76 | int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
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| 77 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
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| 78 | int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
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| 79 | int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0;
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| 80 | int i;
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| 81 | #ifndef OPENSSL_NO_MD5
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| 82 | int hash_old = 0;
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| 83 | #endif
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| 84 |
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| 85 | prog = opt_init(argc, argv, crl_options);
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| 86 | while ((o = opt_next()) != OPT_EOF) {
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| 87 | switch (o) {
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| 88 | case OPT_EOF:
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| 89 | case OPT_ERR:
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| 90 | opthelp:
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| 91 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 92 | goto end;
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| 93 | case OPT_HELP:
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| 94 | opt_help(crl_options);
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| 95 | ret = 0;
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| 96 | goto end;
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| 97 | case OPT_INFORM:
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| 98 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
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| 99 | goto opthelp;
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| 100 | break;
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| 101 | case OPT_IN:
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| 102 | infile = opt_arg();
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| 103 | break;
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| 104 | case OPT_OUTFORM:
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| 105 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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| 106 | goto opthelp;
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| 107 | break;
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| 108 | case OPT_OUT:
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| 109 | outfile = opt_arg();
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| 110 | break;
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| 111 | case OPT_KEYFORM:
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| 112 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
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| 113 | goto opthelp;
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| 114 | break;
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| 115 | case OPT_KEY:
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| 116 | keyfile = opt_arg();
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| 117 | break;
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| 118 | case OPT_GENDELTA:
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| 119 | crldiff = opt_arg();
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| 120 | break;
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| 121 | case OPT_CAPATH:
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| 122 | CApath = opt_arg();
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| 123 | do_ver = 1;
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| 124 | break;
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| 125 | case OPT_CAFILE:
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| 126 | CAfile = opt_arg();
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| 127 | do_ver = 1;
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| 128 | break;
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| 129 | case OPT_NOCAPATH:
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| 130 | noCApath = 1;
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| 131 | break;
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| 132 | case OPT_NOCAFILE:
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| 133 | noCAfile = 1;
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| 134 | break;
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| 135 | case OPT_HASH_OLD:
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| 136 | #ifndef OPENSSL_NO_MD5
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| 137 | hash_old = ++num;
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| 138 | #endif
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| 139 | break;
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| 140 | case OPT_VERIFY:
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| 141 | do_ver = 1;
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| 142 | break;
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| 143 | case OPT_TEXT:
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| 144 | text = 1;
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| 145 | break;
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| 146 | case OPT_HASH:
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| 147 | hash = ++num;
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| 148 | break;
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| 149 | case OPT_ISSUER:
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| 150 | issuer = ++num;
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| 151 | break;
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| 152 | case OPT_LASTUPDATE:
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| 153 | lastupdate = ++num;
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| 154 | break;
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| 155 | case OPT_NEXTUPDATE:
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| 156 | nextupdate = ++num;
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| 157 | break;
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| 158 | case OPT_NOOUT:
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| 159 | noout = ++num;
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| 160 | break;
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| 161 | case OPT_FINGERPRINT:
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| 162 | fingerprint = ++num;
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| 163 | break;
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| 164 | case OPT_CRLNUMBER:
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| 165 | crlnumber = ++num;
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| 166 | break;
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| 167 | case OPT_BADSIG:
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| 168 | badsig = 1;
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| 169 | break;
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| 170 | case OPT_NAMEOPT:
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| 171 | if (!set_nameopt(opt_arg()))
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| 172 | goto opthelp;
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| 173 | break;
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| 174 | case OPT_MD:
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| 175 | if (!opt_md(opt_unknown(), &digest))
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| 176 | goto opthelp;
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| 177 | }
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| 178 | }
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| 179 | argc = opt_num_rest();
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| 180 | if (argc != 0)
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| 181 | goto opthelp;
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| 182 |
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| 183 | x = load_crl(infile, informat);
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| 184 | if (x == NULL)
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| 185 | goto end;
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| 186 |
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| 187 | if (do_ver) {
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| 188 | if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
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| 189 | goto end;
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| 190 | lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
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| 191 | if (lookup == NULL)
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| 192 | goto end;
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| 193 | ctx = X509_STORE_CTX_new();
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| 194 | if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
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| 195 | BIO_printf(bio_err, "Error initialising X509 store\n");
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| 196 | goto end;
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| 197 | }
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| 198 |
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| 199 | xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
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| 200 | X509_CRL_get_issuer(x));
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| 201 | if (xobj == NULL) {
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| 202 | BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
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| 203 | goto end;
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| 204 | }
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| 205 | pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
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| 206 | X509_OBJECT_free(xobj);
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| 207 | if (!pkey) {
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| 208 | BIO_printf(bio_err, "Error getting CRL issuer public key\n");
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| 209 | goto end;
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| 210 | }
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| 211 | i = X509_CRL_verify(x, pkey);
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| 212 | EVP_PKEY_free(pkey);
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| 213 | if (i < 0)
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| 214 | goto end;
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| 215 | if (i == 0)
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| 216 | BIO_printf(bio_err, "verify failure\n");
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| 217 | else
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| 218 | BIO_printf(bio_err, "verify OK\n");
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| 219 | }
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| 220 |
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| 221 | if (crldiff) {
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| 222 | X509_CRL *newcrl, *delta;
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| 223 | if (!keyfile) {
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| 224 | BIO_puts(bio_err, "Missing CRL signing key\n");
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| 225 | goto end;
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| 226 | }
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| 227 | newcrl = load_crl(crldiff, informat);
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| 228 | if (!newcrl)
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| 229 | goto end;
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| 230 | pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
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| 231 | if (!pkey) {
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| 232 | X509_CRL_free(newcrl);
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| 233 | goto end;
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| 234 | }
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| 235 | delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
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| 236 | X509_CRL_free(newcrl);
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| 237 | EVP_PKEY_free(pkey);
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| 238 | if (delta) {
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| 239 | X509_CRL_free(x);
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| 240 | x = delta;
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| 241 | } else {
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| 242 | BIO_puts(bio_err, "Error creating delta CRL\n");
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| 243 | goto end;
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| 244 | }
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| 245 | }
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| 246 |
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| 247 | if (badsig) {
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| 248 | const ASN1_BIT_STRING *sig;
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| 249 |
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| 250 | X509_CRL_get0_signature(x, &sig, NULL);
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| 251 | corrupt_signature(sig);
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| 252 | }
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| 253 |
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| 254 | if (num) {
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| 255 | for (i = 1; i <= num; i++) {
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| 256 | if (issuer == i) {
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| 257 | print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
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| 258 | get_nameopt());
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| 259 | }
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| 260 | if (crlnumber == i) {
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| 261 | ASN1_INTEGER *crlnum;
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| 262 | crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
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| 263 | BIO_printf(bio_out, "crlNumber=");
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| 264 | if (crlnum) {
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| 265 | i2a_ASN1_INTEGER(bio_out, crlnum);
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| 266 | ASN1_INTEGER_free(crlnum);
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| 267 | } else
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| 268 | BIO_puts(bio_out, "<NONE>");
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| 269 | BIO_printf(bio_out, "\n");
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| 270 | }
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| 271 | if (hash == i) {
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| 272 | BIO_printf(bio_out, "%08lx\n",
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| 273 | X509_NAME_hash(X509_CRL_get_issuer(x)));
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| 274 | }
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| 275 | #ifndef OPENSSL_NO_MD5
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| 276 | if (hash_old == i) {
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| 277 | BIO_printf(bio_out, "%08lx\n",
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| 278 | X509_NAME_hash_old(X509_CRL_get_issuer(x)));
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| 279 | }
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| 280 | #endif
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| 281 | if (lastupdate == i) {
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| 282 | BIO_printf(bio_out, "lastUpdate=");
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| 283 | ASN1_TIME_print(bio_out, X509_CRL_get0_lastUpdate(x));
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| 284 | BIO_printf(bio_out, "\n");
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| 285 | }
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| 286 | if (nextupdate == i) {
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| 287 | BIO_printf(bio_out, "nextUpdate=");
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| 288 | if (X509_CRL_get0_nextUpdate(x))
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| 289 | ASN1_TIME_print(bio_out, X509_CRL_get0_nextUpdate(x));
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| 290 | else
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| 291 | BIO_printf(bio_out, "NONE");
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| 292 | BIO_printf(bio_out, "\n");
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| 293 | }
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| 294 | if (fingerprint == i) {
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| 295 | int j;
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| 296 | unsigned int n;
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| 297 | unsigned char md[EVP_MAX_MD_SIZE];
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| 298 |
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| 299 | if (!X509_CRL_digest(x, digest, md, &n)) {
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| 300 | BIO_printf(bio_err, "out of memory\n");
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| 301 | goto end;
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| 302 | }
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| 303 | BIO_printf(bio_out, "%s Fingerprint=",
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| 304 | OBJ_nid2sn(EVP_MD_type(digest)));
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| 305 | for (j = 0; j < (int)n; j++) {
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| 306 | BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
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| 307 | ? '\n' : ':');
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| 308 | }
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| 309 | }
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| 310 | }
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| 311 | }
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| 312 | out = bio_open_default(outfile, 'w', outformat);
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| 313 | if (out == NULL)
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| 314 | goto end;
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| 315 |
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| 316 | if (text)
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| 317 | X509_CRL_print_ex(out, x, get_nameopt());
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| 318 |
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| 319 | if (noout) {
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| 320 | ret = 0;
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| 321 | goto end;
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| 322 | }
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| 323 |
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| 324 | if (outformat == FORMAT_ASN1)
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| 325 | i = (int)i2d_X509_CRL_bio(out, x);
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| 326 | else
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| 327 | i = PEM_write_bio_X509_CRL(out, x);
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| 328 | if (!i) {
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| 329 | BIO_printf(bio_err, "unable to write CRL\n");
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| 330 | goto end;
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| 331 | }
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| 332 | ret = 0;
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| 333 |
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| 334 | end:
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| 335 | if (ret != 0)
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| 336 | ERR_print_errors(bio_err);
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| 337 | BIO_free_all(out);
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| 338 | X509_CRL_free(x);
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| 339 | X509_STORE_CTX_free(ctx);
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| 340 | X509_STORE_free(store);
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| 341 | return ret;
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| 342 | }
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