sl@0: /* apps/verify.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <string.h>
sl@0: #include "apps.h"
sl@0: #include <openssl/bio.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/x509v3.h>
sl@0: #include <openssl/pem.h>
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG	verify_main
sl@0: 
sl@0: static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
sl@0: static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e);
sl@0: static STACK_OF(X509) *load_untrusted(char *file);
sl@0: static int v_verbose=0, vflags = 0;
sl@0: 
sl@0: 
sl@0: 
sl@0: int MAIN(int, char **);
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: 	ENGINE *e = NULL;
sl@0: 	int i,ret=1, badarg = 0;
sl@0: 	int purpose = -1;
sl@0: 	char *CApath=NULL,*CAfile=NULL;
sl@0: 	char *untfile = NULL, *trustfile = NULL;
sl@0: 	STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
sl@0: 	X509_STORE *cert_ctx=NULL;
sl@0: 	X509_LOOKUP *lookup=NULL;
sl@0: 	X509_VERIFY_PARAM *vpm = NULL;
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	char *engine=NULL;
sl@0: #endif
sl@0: 
sl@0: 	cert_ctx=X509_STORE_new();
sl@0: 	if (cert_ctx == NULL) goto end;
sl@0: 	X509_STORE_set_verify_cb_func(cert_ctx,cb);
sl@0: 
sl@0: 	ERR_load_crypto_strings();
sl@0: 
sl@0: 	apps_startup();
sl@0: 
sl@0: 	if (bio_err == NULL)
sl@0: 		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
sl@0: 			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
sl@0: 		
sl@0: 
sl@0: 	if (!load_config(bio_err, NULL))
sl@0: 		goto end;
sl@0: 
sl@0: 	argc--;
sl@0: 	argv++;
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		if (argc >= 1)
sl@0: 			{
sl@0: 			if (strcmp(*argv,"-CApath") == 0)
sl@0: 				{
sl@0: 				if (argc-- < 1) goto end;
sl@0: 				CApath= *(++argv);
sl@0: 				}
sl@0: 			else if (strcmp(*argv,"-CAfile") == 0)
sl@0: 				{
sl@0: 				if (argc-- < 1) goto end;
sl@0: 				CAfile= *(++argv);
sl@0: 				}
sl@0: 			else if (args_verify(&argv, &argc, &badarg, bio_err,
sl@0: 									&vpm))
sl@0: 				{
sl@0: 				if (badarg)
sl@0: 					goto end;
sl@0: 				continue;
sl@0: 				}
sl@0: 			else if (strcmp(*argv,"-untrusted") == 0)
sl@0: 				{
sl@0: 				if (argc-- < 1) goto end;
sl@0: 				untfile= *(++argv);
sl@0: 				}
sl@0: 			else if (strcmp(*argv,"-trusted") == 0)
sl@0: 				{
sl@0: 				if (argc-- < 1) goto end;
sl@0: 				trustfile= *(++argv);
sl@0: 				}
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 			else if (strcmp(*argv,"-engine") == 0)
sl@0: 				{
sl@0: 				if (--argc < 1) goto end;
sl@0: 				engine= *(++argv);
sl@0: 				}
sl@0: #endif
sl@0: 			else if (strcmp(*argv,"-help") == 0)
sl@0: 				goto end;
sl@0: 			else if (strcmp(*argv,"-verbose") == 0)
sl@0: 				v_verbose=1;
sl@0: 			else if (argv[0][0] == '-')
sl@0: 				goto end;
sl@0: 			else
sl@0: 				break;
sl@0: 			argc--;
sl@0: 			argv++;
sl@0: 			}
sl@0: 		else
sl@0: 			break;
sl@0: 		}
sl@0: 
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0:         e = setup_engine(bio_err, engine, 0);
sl@0: #endif
sl@0: 
sl@0: 	if (vpm)
sl@0: 		X509_STORE_set1_param(cert_ctx, vpm);
sl@0: 
sl@0: 	lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
sl@0: 	if (lookup == NULL) abort();
sl@0: 	if (CAfile) {
sl@0: 		i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM);
sl@0: 		if(!i) {
sl@0: 			BIO_printf(bio_err, "Error loading file %s\n", CAfile);
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 		}
sl@0: 	} else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
sl@0: 		
sl@0: 	lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
sl@0: 	if (lookup == NULL) abort();
sl@0: 	if (CApath) {
sl@0: 		i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM);
sl@0: 		if(!i) {
sl@0: 			BIO_printf(bio_err, "Error loading directory %s\n", CApath);
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 		}
sl@0: 	} else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
sl@0: 
sl@0: 	ERR_clear_error();
sl@0: 
sl@0: 	if(untfile) {
sl@0: 		if(!(untrusted = load_untrusted(untfile))) {
sl@0: 			BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile);
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	if(trustfile) {
sl@0: 		if(!(trusted = load_untrusted(trustfile))) {
sl@0: 			BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile);
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e);
sl@0: 	else
sl@0: 		for (i=0; i<argc; i++)
sl@0: 			check(cert_ctx,argv[i], untrusted, trusted, purpose, e);
sl@0: 	ret=0;
sl@0: end:
sl@0: 	if (ret == 1) {
sl@0: 		BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		BIO_printf(bio_err," [-engine e]");
sl@0: #endif
sl@0: 		BIO_printf(bio_err," cert1 cert2 ...\n");
sl@0: 		BIO_printf(bio_err,"recognized usages:\n");
sl@0: 		for(i = 0; i < X509_PURPOSE_get_count(); i++) {
sl@0: 			X509_PURPOSE *ptmp;
sl@0: 			ptmp = X509_PURPOSE_get0(i);
sl@0: 			BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp),
sl@0: 								X509_PURPOSE_get0_name(ptmp));
sl@0: 		}
sl@0: 	}
sl@0: 	if (vpm) X509_VERIFY_PARAM_free(vpm);
sl@0: 	if (cert_ctx != NULL) X509_STORE_free(cert_ctx);
sl@0: 	sk_X509_pop_free(untrusted, X509_free);
sl@0: 	sk_X509_pop_free(trusted, X509_free);
sl@0: 	apps_shutdown();
sl@0: 	OPENSSL_EXIT(ret);
sl@0: 	}
sl@0: 
sl@0: static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e)
sl@0: 	{
sl@0: 	X509 *x=NULL;
sl@0: 	int i=0,ret=0;
sl@0: 	X509_STORE_CTX *csc;
sl@0: 
sl@0: 	x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
sl@0: 	if (x == NULL)
sl@0: 		goto end;
sl@0: 	fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
sl@0: 
sl@0: 	csc = X509_STORE_CTX_new();
sl@0: 	if (csc == NULL)
sl@0: 		{
sl@0: 		ERR_print_errors(bio_err);
sl@0: 		goto end;
sl@0: 		}
sl@0: 	X509_STORE_set_flags(ctx, vflags);
sl@0: 	if(!X509_STORE_CTX_init(csc,ctx,x,uchain))
sl@0: 		{
sl@0: 		ERR_print_errors(bio_err);
sl@0: 		goto end;
sl@0: 		}
sl@0: 	if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain);
sl@0: 	if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose);
sl@0: 	i=X509_verify_cert(csc);
sl@0: 	X509_STORE_CTX_free(csc);
sl@0: 
sl@0: 	ret=0;
sl@0: end:
sl@0: 	if (i)
sl@0: 		{
sl@0: 		fprintf(stdout,"OK\n");
sl@0:   	ret=1;
sl@0: 		}
sl@0: 	else
sl@0: 		ERR_print_errors(bio_err);
sl@0: 	if (x != NULL) X509_free(x);
sl@0: 
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static STACK_OF(X509) *load_untrusted(char *certfile)
sl@0: {
sl@0: 	STACK_OF(X509_INFO) *sk=NULL;
sl@0: 	STACK_OF(X509) *stack=NULL, *ret=NULL;
sl@0: 	BIO *in=NULL;
sl@0: 	X509_INFO *xi;
sl@0: 
sl@0: 	if(!(stack = sk_X509_new_null())) {
sl@0: 		BIO_printf(bio_err,"memory allocation failure\n");
sl@0: 		goto end;
sl@0: 	}
sl@0: 
sl@0: 	if(!(in=BIO_new_file(certfile, "r"))) {
sl@0: 		BIO_printf(bio_err,"error opening the file, %s\n",certfile);
sl@0: 		goto end;
sl@0: 	}
sl@0: 
sl@0: 	/* This loads from a file, a stack of x509/crl/pkey sets */
sl@0: 	if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) {
sl@0: 		BIO_printf(bio_err,"error reading the file, %s\n",certfile);
sl@0: 		goto end;
sl@0: 	}
sl@0: 
sl@0: 	/* scan over it and pull out the certs */
sl@0: 	while (sk_X509_INFO_num(sk))
sl@0: 		{
sl@0: 		xi=sk_X509_INFO_shift(sk);
sl@0: 		if (xi->x509 != NULL)
sl@0: 			{
sl@0: 			sk_X509_push(stack,xi->x509);
sl@0: 			xi->x509=NULL;
sl@0: 			}
sl@0: 		X509_INFO_free(xi);
sl@0: 		}
sl@0: 	if(!sk_X509_num(stack)) {
sl@0: 		BIO_printf(bio_err,"no certificates in file, %s\n",certfile);
sl@0: 		sk_X509_free(stack);
sl@0: 		goto end;
sl@0: 	}
sl@0: 	ret=stack;
sl@0: end:
sl@0: 	BIO_free(in);
sl@0: 	sk_X509_INFO_free(sk);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
sl@0: 	{
sl@0: 	char buf[256];
sl@0: 
sl@0: 	if (!ok)
sl@0: 		{
sl@0: 		if (ctx->current_cert)
sl@0: 			{
sl@0: 			X509_NAME_oneline(
sl@0: 				X509_get_subject_name(ctx->current_cert),buf,
sl@0: 				sizeof buf);
sl@0: 			printf("%s\n",buf);
sl@0: 			}
sl@0: 		printf("error %d at %d depth lookup:%s\n",ctx->error,
sl@0: 			ctx->error_depth,
sl@0: 			X509_verify_cert_error_string(ctx->error));
sl@0: 		if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1;
sl@0: 		/* since we are just checking the certificates, it is
sl@0: 		 * ok if they are self signed. But we should still warn
sl@0: 		 * the user.
sl@0:  		 */
sl@0: 		if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
sl@0: 		/* Continue after extension errors too */
sl@0: 		if (ctx->error == X509_V_ERR_INVALID_CA) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_INVALID_NON_CA) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1;
sl@0: 		if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1;
sl@0: 
sl@0: 		if (ctx->error == X509_V_ERR_NO_EXPLICIT_POLICY)
sl@0: 			policies_print(NULL, ctx);
sl@0: 		return ok;
sl@0: 
sl@0: 		}
sl@0: 	if ((ctx->error == X509_V_OK) && (ok == 2))
sl@0: 		policies_print(NULL, ctx);
sl@0: 	if (!v_verbose)
sl@0: 		ERR_clear_error();
sl@0: 	return(ok);
sl@0: 	}
sl@0: