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2017-02-25 23:55:24 +01:00
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/* apps/verify.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>
#undef PROG
#define PROG verify_main
static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
static int check(X509_STORE *ctx, char *file,
STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
STACK_OF(X509_CRL) *crls, ENGINE *e);
static int v_verbose = 0, vflags = 0;
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int i, ret = 1, badarg = 0;
char *CApath = NULL, *CAfile = NULL;
char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
STACK_OF(X509_CRL) *crls = NULL;
X509_STORE *cert_ctx = NULL;
X509_LOOKUP *lookup = NULL;
X509_VERIFY_PARAM *vpm = NULL;
int crl_download = 0;
#ifndef OPENSSL_NO_ENGINE
char *engine = NULL;
#endif
cert_ctx = X509_STORE_new();
if (cert_ctx == NULL)
goto end;
X509_STORE_set_verify_cb(cert_ctx, cb);
ERR_load_crypto_strings();
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
argc--;
argv++;
for (;;) {
if (argc >= 1) {
if (strcmp(*argv, "-CApath") == 0) {
if (argc-- < 1)
goto end;
CApath = *(++argv);
} else if (strcmp(*argv, "-CAfile") == 0) {
if (argc-- < 1)
goto end;
CAfile = *(++argv);
} else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
if (badarg)
goto end;
continue;
} else if (strcmp(*argv, "-untrusted") == 0) {
if (argc-- < 1)
goto end;
untfile = *(++argv);
} else if (strcmp(*argv, "-trusted") == 0) {
if (argc-- < 1)
goto end;
trustfile = *(++argv);
} else if (strcmp(*argv, "-CRLfile") == 0) {
if (argc-- < 1)
goto end;
crlfile = *(++argv);
} else if (strcmp(*argv, "-crl_download") == 0)
crl_download = 1;
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto end;
engine = *(++argv);
}
#endif
else if (strcmp(*argv, "-help") == 0)
goto end;
else if (strcmp(*argv, "-verbose") == 0)
v_verbose = 1;
else if (argv[0][0] == '-')
goto end;
else
break;
argc--;
argv++;
} else
break;
}
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if (vpm)
X509_STORE_set1_param(cert_ctx, vpm);
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
if (lookup == NULL)
abort();
if (CAfile) {
i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
if (!i) {
BIO_printf(bio_err, "Error loading file %s\n", CAfile);
ERR_print_errors(bio_err);
goto end;
}
} else
X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
if (lookup == NULL)
abort();
if (CApath) {
i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
if (!i) {
BIO_printf(bio_err, "Error loading directory %s\n", CApath);
ERR_print_errors(bio_err);
goto end;
}
} else
X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
ERR_clear_error();
if (untfile) {
untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
NULL, e, "untrusted certificates");
if (!untrusted)
goto end;
}
if (trustfile) {
trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
NULL, e, "trusted certificates");
if (!trusted)
goto end;
}
if (crlfile) {
crls = load_crls(bio_err, crlfile, FORMAT_PEM, NULL, e, "other CRLs");
if (!crls)
goto end;
}
ret = 0;
if (crl_download)
store_setup_crl_download(cert_ctx);
if (argc < 1) {
if (1 != check(cert_ctx, NULL, untrusted, trusted, crls, e))
ret = -1;
} else {
for (i = 0; i < argc; i++)
if (1 != check(cert_ctx, argv[i], untrusted, trusted, crls, e))
ret = -1;
}
end:
if (ret == 1) {
BIO_printf(bio_err,
"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
BIO_printf(bio_err, " [-no_alt_chains] [-attime timestamp]");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err, " [-engine e]");
#endif
BIO_printf(bio_err, " cert1 cert2 ...\n");
BIO_printf(bio_err, "recognized usages:\n");
for (i = 0; i < X509_PURPOSE_get_count(); i++) {
X509_PURPOSE *ptmp;
ptmp = X509_PURPOSE_get0(i);
BIO_printf(bio_err, "\t%-10s\t%s\n",
X509_PURPOSE_get0_sname(ptmp),
X509_PURPOSE_get0_name(ptmp));
}
}
if (vpm)
X509_VERIFY_PARAM_free(vpm);
if (cert_ctx != NULL)
X509_STORE_free(cert_ctx);
sk_X509_pop_free(untrusted, X509_free);
sk_X509_pop_free(trusted, X509_free);
sk_X509_CRL_pop_free(crls, X509_CRL_free);
apps_shutdown();
OPENSSL_EXIT(ret < 0 ? 2 : ret);
}
static int check(X509_STORE *ctx, char *file,
STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
STACK_OF(X509_CRL) *crls, ENGINE *e)
{
X509 *x = NULL;
int i = 0, ret = 0;
X509_STORE_CTX *csc;
x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
if (x == NULL)
goto end;
fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
csc = X509_STORE_CTX_new();
if (csc == NULL) {
ERR_print_errors(bio_err);
goto end;
}
X509_STORE_set_flags(ctx, vflags);
if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
ERR_print_errors(bio_err);
goto end;
}
if (tchain)
X509_STORE_CTX_trusted_stack(csc, tchain);
if (crls)
X509_STORE_CTX_set0_crls(csc, crls);
i = X509_verify_cert(csc);
X509_STORE_CTX_free(csc);
ret = 0;
end:
if (i > 0) {
fprintf(stdout, "OK\n");
ret = 1;
} else
ERR_print_errors(bio_err);
if (x != NULL)
X509_free(x);
return (ret);
}
static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
{
int cert_error = X509_STORE_CTX_get_error(ctx);
X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
if (!ok) {
if (current_cert) {
X509_NAME_print_ex_fp(stdout,
X509_get_subject_name(current_cert),
0, XN_FLAG_ONELINE);
printf("\n");
}
printf("%serror %d at %d depth lookup:%s\n",
X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
cert_error,
X509_STORE_CTX_get_error_depth(ctx),
X509_verify_cert_error_string(cert_error));
switch (cert_error) {
case X509_V_ERR_NO_EXPLICIT_POLICY:
policies_print(NULL, ctx);
case X509_V_ERR_CERT_HAS_EXPIRED:
/*
* since we are just checking the certificates, it is ok if they
* are self signed. But we should still warn the user.
*/
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
/* Continue after extension errors too */
case X509_V_ERR_INVALID_CA:
case X509_V_ERR_INVALID_NON_CA:
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
case X509_V_ERR_INVALID_PURPOSE:
case X509_V_ERR_CRL_HAS_EXPIRED:
case X509_V_ERR_CRL_NOT_YET_VALID:
case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
ok = 1;
}
return ok;
}
if (cert_error == X509_V_OK && ok == 2)
policies_print(NULL, ctx);
if (!v_verbose)
ERR_clear_error();
return (ok);
}