357 lines
13 KiB
C
357 lines
13 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include <openssl/pem.h>
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static int cb(int ok, X509_STORE_CTX *ctx);
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static int check(X509_STORE *ctx, char *file,
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STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
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STACK_OF(X509_CRL) *crls, int show_chain);
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static int v_verbose = 0, vflags = 0;
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE,
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OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
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OPT_V_ENUM,
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OPT_VERBOSE
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} OPTION_CHOICE;
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OPTIONS verify_options[] = {
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{OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
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{OPT_HELP_STR, 1, '-', "Valid options are:\n"},
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{"help", OPT_HELP, '-', "Display this summary"},
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{"verbose", OPT_VERBOSE, '-',
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"Print extra information about the operations being performed."},
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{"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
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{"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
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{"no-CAfile", OPT_NOCAFILE, '-',
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"Do not load the default certificates file"},
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{"no-CApath", OPT_NOCAPATH, '-',
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"Do not load certificates from the default certificates directory"},
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{"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
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{"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
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{"CRLfile", OPT_CRLFILE, '<',
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"File containing one or more CRL's (in PEM format) to load"},
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{"crl_download", OPT_CRL_DOWNLOAD, '-',
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"Attempt to download CRL information for this certificate"},
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{"show_chain", OPT_SHOW_CHAIN, '-',
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"Display information about the certificate chain"},
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OPT_V_OPTIONS,
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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#endif
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{NULL}
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};
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int verify_main(int argc, char **argv)
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{
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STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
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STACK_OF(X509_CRL) *crls = NULL;
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X509_STORE *store = NULL;
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X509_VERIFY_PARAM *vpm = NULL;
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char *prog, *CApath = NULL, *CAfile = NULL;
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int noCApath = 0, noCAfile = 0;
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int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
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OPTION_CHOICE o;
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if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
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goto end;
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prog = opt_init(argc, argv, verify_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(verify_options);
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BIO_printf(bio_err, "Recognized usages:\n");
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for (i = 0; i < X509_PURPOSE_get_count(); i++) {
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X509_PURPOSE *ptmp;
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ptmp = X509_PURPOSE_get0(i);
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BIO_printf(bio_err, "\t%-10s\t%s\n",
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X509_PURPOSE_get0_sname(ptmp),
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X509_PURPOSE_get0_name(ptmp));
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}
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BIO_printf(bio_err, "Recognized verify names:\n");
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for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
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const X509_VERIFY_PARAM *vptmp;
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vptmp = X509_VERIFY_PARAM_get0(i);
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BIO_printf(bio_err, "\t%-10s\n",
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X509_VERIFY_PARAM_get0_name(vptmp));
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}
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ret = 0;
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goto end;
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case OPT_V_CASES:
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if (!opt_verify(o, vpm))
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goto end;
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vpmtouched++;
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break;
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case OPT_CAPATH:
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CApath = opt_arg();
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break;
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case OPT_CAFILE:
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CAfile = opt_arg();
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break;
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case OPT_NOCAPATH:
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noCApath = 1;
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break;
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case OPT_NOCAFILE:
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noCAfile = 1;
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break;
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case OPT_UNTRUSTED:
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/* Zero or more times */
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if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL,
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"untrusted certificates"))
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goto end;
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break;
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case OPT_TRUSTED:
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/* Zero or more times */
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noCAfile = 1;
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noCApath = 1;
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if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL,
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"trusted certificates"))
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goto end;
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break;
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case OPT_CRLFILE:
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/* Zero or more times */
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if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL,
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"other CRLs"))
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goto end;
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break;
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case OPT_CRL_DOWNLOAD:
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crl_download = 1;
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break;
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case OPT_ENGINE:
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if (setup_engine(opt_arg(), 0) == NULL) {
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/* Failure message already displayed */
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goto end;
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}
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break;
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case OPT_SHOW_CHAIN:
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show_chain = 1;
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break;
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case OPT_VERBOSE:
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v_verbose = 1;
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break;
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}
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}
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argc = opt_num_rest();
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argv = opt_rest();
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if (trusted != NULL && (CAfile || CApath)) {
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BIO_printf(bio_err,
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"%s: Cannot use -trusted with -CAfile or -CApath\n",
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prog);
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goto end;
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}
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if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
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goto end;
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X509_STORE_set_verify_cb(store, cb);
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if (vpmtouched)
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X509_STORE_set1_param(store, vpm);
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ERR_clear_error();
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if (crl_download)
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store_setup_crl_download(store);
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ret = 0;
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if (argc < 1) {
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if (check(store, NULL, untrusted, trusted, crls, show_chain) != 1)
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ret = -1;
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} else {
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for (i = 0; i < argc; i++)
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if (check(store, argv[i], untrusted, trusted, crls,
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show_chain) != 1)
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ret = -1;
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}
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end:
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X509_VERIFY_PARAM_free(vpm);
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X509_STORE_free(store);
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sk_X509_pop_free(untrusted, X509_free);
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sk_X509_pop_free(trusted, X509_free);
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sk_X509_CRL_pop_free(crls, X509_CRL_free);
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return (ret < 0 ? 2 : ret);
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}
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static int check(X509_STORE *ctx, char *file,
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STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
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STACK_OF(X509_CRL) *crls, int show_chain)
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{
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X509 *x = NULL;
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int i = 0, ret = 0;
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X509_STORE_CTX *csc;
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STACK_OF(X509) *chain = NULL;
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int num_untrusted;
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x = load_cert(file, FORMAT_PEM, "certificate file");
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if (x == NULL)
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goto end;
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csc = X509_STORE_CTX_new();
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if (csc == NULL) {
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printf("error %s: X.509 store context allocation failed\n",
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(file == NULL) ? "stdin" : file);
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goto end;
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}
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X509_STORE_set_flags(ctx, vflags);
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if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
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printf("error %s: X.509 store context initialization failed\n",
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(file == NULL) ? "stdin" : file);
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goto end;
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}
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if (tchain)
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X509_STORE_CTX_trusted_stack(csc, tchain);
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if (crls)
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X509_STORE_CTX_set0_crls(csc, crls);
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i = X509_verify_cert(csc);
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if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
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printf("%s: OK\n", (file == NULL) ? "stdin" : file);
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ret = 1;
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if (show_chain) {
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int j;
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chain = X509_STORE_CTX_get1_chain(csc);
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num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
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printf("Chain:\n");
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for (j = 0; j < sk_X509_num(chain); j++) {
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X509 *cert = sk_X509_value(chain, j);
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printf("depth=%d: ", j);
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X509_NAME_print_ex_fp(stdout,
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X509_get_subject_name(cert),
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0, XN_FLAG_ONELINE);
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if (j < num_untrusted)
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printf(" (untrusted)");
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printf("\n");
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}
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sk_X509_pop_free(chain, X509_free);
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}
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} else {
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printf("error %s: verification failed\n", (file == NULL) ? "stdin" : file);
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}
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X509_STORE_CTX_free(csc);
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end:
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if (i <= 0)
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ERR_print_errors(bio_err);
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X509_free(x);
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return ret;
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}
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static int cb(int ok, X509_STORE_CTX *ctx)
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{
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int cert_error = X509_STORE_CTX_get_error(ctx);
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X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
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if (!ok) {
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if (current_cert) {
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X509_NAME_print_ex(bio_err,
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X509_get_subject_name(current_cert),
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0, XN_FLAG_ONELINE);
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BIO_printf(bio_err, "\n");
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}
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BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
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X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "",
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cert_error,
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X509_STORE_CTX_get_error_depth(ctx),
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X509_verify_cert_error_string(cert_error));
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switch (cert_error) {
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case X509_V_ERR_NO_EXPLICIT_POLICY:
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policies_print(ctx);
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case X509_V_ERR_CERT_HAS_EXPIRED:
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/*
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* since we are just checking the certificates, it is ok if they
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* are self signed. But we should still warn the user.
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*/
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case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
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/* Continue after extension errors too */
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case X509_V_ERR_INVALID_CA:
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case X509_V_ERR_INVALID_NON_CA:
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case X509_V_ERR_PATH_LENGTH_EXCEEDED:
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case X509_V_ERR_INVALID_PURPOSE:
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case X509_V_ERR_CRL_HAS_EXPIRED:
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case X509_V_ERR_CRL_NOT_YET_VALID:
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case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
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ok = 1;
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}
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return ok;
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}
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if (cert_error == X509_V_OK && ok == 2)
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policies_print(ctx);
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if (!v_verbose)
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ERR_clear_error();
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return (ok);
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}
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