cd52956357
CA setting in each certificate on the chain is correct. As a side- effect always do the following basic checks on extensions, not just when there's an associated purpose to the check: - if there is an unhandled critical extension (unless the user has chosen to ignore this fault) - if the path length has been exceeded (if one is set at all) - that certain extensions fit the associated purpose (if one has been given)
370 lines
11 KiB
C
370 lines
11 KiB
C
/* apps/verify.c */
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/* 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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#undef PROG
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#define PROG verify_main
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static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
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static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e);
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static STACK_OF(X509) *load_untrusted(char *file);
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static int v_verbose=0, vflags = 0;
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int MAIN(int, char **);
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int MAIN(int argc, char **argv)
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{
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ENGINE *e = NULL;
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int i,ret=1;
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int purpose = -1;
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char *CApath=NULL,*CAfile=NULL;
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char *untfile = NULL, *trustfile = NULL;
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STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
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X509_STORE *cert_ctx=NULL;
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X509_LOOKUP *lookup=NULL;
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#ifndef OPENSSL_NO_ENGINE
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char *engine=NULL;
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#endif
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cert_ctx=X509_STORE_new();
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if (cert_ctx == NULL) goto end;
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X509_STORE_set_verify_cb_func(cert_ctx,cb);
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ERR_load_crypto_strings();
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apps_startup();
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if (bio_err == NULL)
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if ((bio_err=BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
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if (!load_config(bio_err, NULL))
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goto end;
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argc--;
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argv++;
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for (;;)
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{
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if (argc >= 1)
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{
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if (strcmp(*argv,"-CApath") == 0)
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{
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if (argc-- < 1) goto end;
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CApath= *(++argv);
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}
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else if (strcmp(*argv,"-CAfile") == 0)
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{
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if (argc-- < 1) goto end;
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CAfile= *(++argv);
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}
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else if (strcmp(*argv,"-purpose") == 0)
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{
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X509_PURPOSE *xptmp;
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if (argc-- < 1) goto end;
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i = X509_PURPOSE_get_by_sname(*(++argv));
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if(i < 0)
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{
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BIO_printf(bio_err, "unrecognized purpose\n");
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goto end;
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}
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xptmp = X509_PURPOSE_get0(i);
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purpose = X509_PURPOSE_get_id(xptmp);
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}
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else if (strcmp(*argv,"-untrusted") == 0)
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{
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if (argc-- < 1) goto end;
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untfile= *(++argv);
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}
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else if (strcmp(*argv,"-trusted") == 0)
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{
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if (argc-- < 1) goto end;
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trustfile= *(++argv);
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}
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#ifndef OPENSSL_NO_ENGINE
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else if (strcmp(*argv,"-engine") == 0)
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{
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if (--argc < 1) goto end;
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engine= *(++argv);
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}
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#endif
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else if (strcmp(*argv,"-help") == 0)
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goto end;
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else if (strcmp(*argv,"-ignore_critical") == 0)
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vflags |= X509_V_FLAG_IGNORE_CRITICAL;
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else if (strcmp(*argv,"-issuer_checks") == 0)
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vflags |= X509_V_FLAG_CB_ISSUER_CHECK;
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else if (strcmp(*argv,"-crl_check") == 0)
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vflags |= X509_V_FLAG_CRL_CHECK;
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else if (strcmp(*argv,"-crl_check_all") == 0)
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vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
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else if (strcmp(*argv,"-verbose") == 0)
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v_verbose=1;
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else if (argv[0][0] == '-')
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goto end;
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else
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break;
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argc--;
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argv++;
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}
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else
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break;
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}
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#ifndef OPENSSL_NO_ENGINE
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e = setup_engine(bio_err, engine, 0);
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#endif
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lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
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if (lookup == NULL) abort();
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if (CAfile) {
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i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM);
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if(!i) {
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BIO_printf(bio_err, "Error loading file %s\n", CAfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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} else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
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lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
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if (lookup == NULL) abort();
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if (CApath) {
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i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM);
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if(!i) {
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BIO_printf(bio_err, "Error loading directory %s\n", CApath);
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ERR_print_errors(bio_err);
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goto end;
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}
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} else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
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ERR_clear_error();
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if(untfile) {
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if(!(untrusted = load_untrusted(untfile))) {
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BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if(trustfile) {
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if(!(trusted = load_untrusted(trustfile))) {
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BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e);
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else
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for (i=0; i<argc; i++)
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check(cert_ctx,argv[i], untrusted, trusted, purpose, e);
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ret=0;
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end:
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if (ret == 1) {
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BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
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#ifndef OPENSSL_NO_ENGINE
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BIO_printf(bio_err," [-engine e]");
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#endif
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BIO_printf(bio_err," cert1 cert2 ...\n");
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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", X509_PURPOSE_get0_sname(ptmp),
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X509_PURPOSE_get0_name(ptmp));
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}
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}
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if (cert_ctx != NULL) X509_STORE_free(cert_ctx);
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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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apps_shutdown();
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OPENSSL_EXIT(ret);
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}
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static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e)
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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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x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
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if (x == NULL)
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goto end;
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fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
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csc = X509_STORE_CTX_new();
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if (csc == NULL)
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{
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ERR_print_errors(bio_err);
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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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{
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ERR_print_errors(bio_err);
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goto end;
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}
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if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain);
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if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose);
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i=X509_verify_cert(csc);
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X509_STORE_CTX_free(csc);
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ret=0;
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end:
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if (i)
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{
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fprintf(stdout,"OK\n");
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ret=1;
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}
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else
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ERR_print_errors(bio_err);
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if (x != NULL) X509_free(x);
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return(ret);
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}
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static STACK_OF(X509) *load_untrusted(char *certfile)
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{
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STACK_OF(X509_INFO) *sk=NULL;
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STACK_OF(X509) *stack=NULL, *ret=NULL;
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BIO *in=NULL;
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X509_INFO *xi;
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if(!(stack = sk_X509_new_null())) {
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BIO_printf(bio_err,"memory allocation failure\n");
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goto end;
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}
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if(!(in=BIO_new_file(certfile, "r"))) {
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BIO_printf(bio_err,"error opening the file, %s\n",certfile);
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goto end;
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}
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/* This loads from a file, a stack of x509/crl/pkey sets */
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if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) {
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BIO_printf(bio_err,"error reading the file, %s\n",certfile);
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goto end;
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}
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/* scan over it and pull out the certs */
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while (sk_X509_INFO_num(sk))
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{
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xi=sk_X509_INFO_shift(sk);
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if (xi->x509 != NULL)
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{
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sk_X509_push(stack,xi->x509);
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xi->x509=NULL;
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}
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X509_INFO_free(xi);
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}
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if(!sk_X509_num(stack)) {
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BIO_printf(bio_err,"no certificates in file, %s\n",certfile);
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sk_X509_free(stack);
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goto end;
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}
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ret=stack;
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end:
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BIO_free(in);
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sk_X509_INFO_free(sk);
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return(ret);
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}
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static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
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{
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char buf[256];
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if (!ok)
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{
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X509_NAME_oneline(
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X509_get_subject_name(ctx->current_cert),buf,
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sizeof buf);
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printf("%s\n",buf);
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printf("error %d at %d depth lookup:%s\n",ctx->error,
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ctx->error_depth,
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X509_verify_cert_error_string(ctx->error));
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if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1;
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/* since we are just checking the certificates, it is
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* ok if they are self signed. But we should still warn
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* the user.
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*/
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if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
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/* Continue after extension errors too */
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if (ctx->error == X509_V_ERR_INVALID_CA) ok=1;
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if (ctx->error == X509_V_ERR_INVALID_NON_CA) ok=1;
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if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1;
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if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1;
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if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
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if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1;
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if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1;
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if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1;
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}
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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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