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IABSD.fr/src/usr.bin/openssl/pkcs12.c

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  • Author : tb
    Date : 2025-11-27 08:26:32
    Hash : 7e1adf15
    Message : openssl pkcs12: stop reaching into ASN1_STRING Buy a t: rename hex_prin() to hex_print() and accept an ASN1_STRING so that we only need to use accessors once. Also avoid a printf %s NULL. ok kenjiro

  • usr.bin/openssl/pkcs12.c
  • /* $OpenBSD: pkcs12.c,v 1.31 2025/11/27 08:26:32 tb Exp $ */
    /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
     * project.
     */
    /* ====================================================================
     * Copyright (c) 1999-2006 The OpenSSL Project.  All rights reserved.
     *
     * 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 above 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 acknowledgment:
     *    "This product includes software developed by the OpenSSL Project
     *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     *
     * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     *    endorse or promote products derived from this software without
     *    prior written permission. For written permission, please contact
     *    licensing@OpenSSL.org.
     *
     * 5. Products derived from this software may not be called "OpenSSL"
     *    nor may "OpenSSL" appear in their names without prior written
     *    permission of the OpenSSL Project.
     *
     * 6. Redistributions of any form whatsoever must retain the following
     *    acknowledgment:
     *    "This product includes software developed by the OpenSSL Project
     *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     *
     * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     * EXPRESSED 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 OpenSSL PROJECT OR
     * ITS 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.
     * ====================================================================
     *
     * This product includes cryptographic software written by Eric Young
     * (eay@cryptsoft.com).  This product includes software written by Tim
     * Hudson (tjh@cryptsoft.com).
     *
     */
    
    #include <openssl/opensslconf.h>
    
    #if !defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_SHA1)
    
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    
    #include "apps.h"
    
    #include <openssl/crypto.h>
    #include <openssl/err.h>
    #include <openssl/pem.h>
    #include <openssl/pkcs12.h>
    #include <openssl/x509.h>
    
    #define NOKEYS		0x1
    #define NOCERTS 	0x2
    #define INFO		0x4
    #define CLCERTS		0x8
    #define CACERTS		0x10
    
    static int get_cert_chain(X509 *cert, X509_STORE *store,
        STACK_OF(X509) **chain);
    static int dump_certs_keys_p12(BIO *out, PKCS12 *p12, char *pass, int passlen,
        int options, char *pempass);
    static int dump_certs_pkeys_bags(BIO *out, const STACK_OF(PKCS12_SAFEBAG) *bags,
        char *pass, int passlen, int options, char *pempass);
    static int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bags, char *pass,
        int passlen, int options, char *pempass);
    static int print_attribs(BIO *out, const STACK_OF(X509_ATTRIBUTE) *attrlst,
        const char *name);
    static int alg_print(BIO *x, const X509_ALGOR *alg);
    static int set_pbe(BIO *err, int *ppbe, const char *str);
    
    static struct {
    	char *CAfile;
    	STACK_OF(OPENSSL_STRING) *canames;
    	char *CApath;
    	int cert_pbe;
    	char *certfile;
    	int chain;
    	const EVP_CIPHER *enc;
    	int export_cert;
    	int key_pbe;
    	char *keyname;
    	int keytype;
    	char *infile;
    	int iter;
    	char *macalg;
    	int maciter;
    	int macver;
    	char *name;
    	int noprompt;
    	int options;
    	char *outfile;
    	char *passarg;
    	char *passargin;
    	char *passargout;
    	int twopass;
    } cfg;
    
    static int
    pkcs12_opt_canames(char *arg)
    {
    	if (cfg.canames == NULL &&
    	    (cfg.canames = sk_OPENSSL_STRING_new_null()) == NULL)
    		return (1);
    
    	if (!sk_OPENSSL_STRING_push(cfg.canames, arg))
    		return (1);
    
    	return (0);
    }
    
    static int
    pkcs12_opt_cert_pbe(char *arg)
    {
    	return (!set_pbe(bio_err, &cfg.cert_pbe, arg));
    }
    
    static int
    pkcs12_opt_key_pbe(char *arg)
    {
    	return (!set_pbe(bio_err, &cfg.key_pbe, arg));
    }
    
    static int
    pkcs12_opt_passarg(char *arg)
    {
    	cfg.passarg = arg;
    	cfg.noprompt = 1;
    	return (0);
    }
    
    static const EVP_CIPHER *
    get_cipher_by_name(char *name)
    {
    	if (name == NULL || strcmp(name, "") == 0)
    		return (NULL);
    #ifndef OPENSSL_NO_AES
    	else if (strcmp(name, "aes128") == 0)
    		return EVP_aes_128_cbc();
    	else if (strcmp(name, "aes192") == 0)
    		return EVP_aes_192_cbc();
    	else if (strcmp(name, "aes256") == 0)
    		return EVP_aes_256_cbc();
    #endif
    #ifndef OPENSSL_NO_CAMELLIA
    	else if (strcmp(name, "camellia128") == 0)
    		return EVP_camellia_128_cbc();
    	else if (strcmp(name, "camellia192") == 0)
    		return EVP_camellia_192_cbc();
    	else if (strcmp(name, "camellia256") == 0)
    		return EVP_camellia_256_cbc();
    #endif
    #ifndef OPENSSL_NO_DES
    	else if (strcmp(name, "des") == 0)
    		return EVP_des_cbc();
    	else if (strcmp(name, "des3") == 0)
    		return EVP_des_ede3_cbc();
    #endif
    #ifndef OPENSSL_NO_IDEA
    	else if (strcmp(name, "idea") == 0)
    		return EVP_idea_cbc();
    #endif
    	else
    		return (NULL);
    }
    
    static int
    pkcs12_opt_enc(int argc, char **argv, int *argsused)
    {
    	char *name = argv[0];
    
    	if (*name++ != '-')
    		return (1);
    
    	if (strcmp(name, "nodes") == 0)
    		cfg.enc = NULL;
    	else if ((cfg.enc = get_cipher_by_name(name)) == NULL)
    		return (1);
    
    	*argsused = 1;
    	return (0);
    }
    
    static const struct option pkcs12_options[] = {
    #ifndef OPENSSL_NO_AES
    	{
    		.name = "aes128",
    		.desc = "Encrypt PEM output with CBC AES",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "aes192",
    		.desc = "Encrypt PEM output with CBC AES",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "aes256",
    		.desc = "Encrypt PEM output with CBC AES",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    #endif
    #ifndef OPENSSL_NO_CAMELLIA
    	{
    		.name = "camellia128",
    		.desc = "Encrypt PEM output with CBC Camellia",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "camellia192",
    		.desc = "Encrypt PEM output with CBC Camellia",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "camellia256",
    		.desc = "Encrypt PEM output with CBC Camellia",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    #endif
    	{
    		.name = "des",
    		.desc = "Encrypt private keys with DES",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "des3",
    		.desc = "Encrypt private keys with triple DES (default)",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    #ifndef OPENSSL_NO_IDEA
    	{
    		.name = "idea",
    		.desc = "Encrypt private keys with IDEA",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    #endif
    	{
    		.name = "cacerts",
    		.desc = "Only output CA certificates",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = CACERTS,
    	},
    	{
    		.name = "CAfile",
    		.argname = "file",
    		.desc = "PEM format file of CA certificates",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.CAfile,
    	},
    	{
    		.name = "caname",
    		.argname = "name",
    		.desc = "Use name as CA friendly name (can be used more than once)",
    		.type = OPTION_ARG_FUNC,
    		.opt.argfunc = pkcs12_opt_canames,
    	},
    	{
    		.name = "CApath",
    		.argname = "directory",
    		.desc = "PEM format directory of CA certificates",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.CApath,
    	},
    	{
    		.name = "certfile",
    		.argname = "file",
    		.desc = "Add all certs in file",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.certfile,
    	},
    	{
    		.name = "certpbe",
    		.argname = "alg",
    		.desc = "Specify certificate PBE algorithm (default RC2-40)",
    		.type = OPTION_ARG_FUNC,
    		.opt.argfunc = pkcs12_opt_cert_pbe,
    	},
    	{
    		.name = "chain",
    		.desc = "Add certificate chain",
    		.type = OPTION_FLAG,
    		.opt.flag = &cfg.chain,
    	},
    	{
    		.name = "clcerts",
    		.desc = "Only output client certificates",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = CLCERTS,
    	},
    	{
    		.name = "descert",
    		.desc = "Encrypt PKCS#12 certificates with triple DES (default RC2-40)",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.cert_pbe,
    		.value = NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
    	},
    	{
    		.name = "export",
    		.desc = "Output PKCS#12 file",
    		.type = OPTION_FLAG,
    		.opt.flag = &cfg.export_cert,
    	},
    	{
    		.name = "in",
    		.argname = "file",
    		.desc = "Input filename",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.infile,
    	},
    	{
    		.name = "info",
    		.desc = "Give info about PKCS#12 structure",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = INFO,
    	},
    	{
    		.name = "inkey",
    		.argname = "file",
    		.desc = "Private key if not infile",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.keyname,
    	},
    	{
    		.name = "keyex",
    		.desc = "Set MS key exchange type",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.keytype,
    		.value = KEY_EX,
    	},
    	{
    		.name = "keypbe",
    		.argname = "alg",
    		.desc = "Specify private key PBE algorithm (default 3DES)",
    		.type = OPTION_ARG_FUNC,
    		.opt.argfunc = pkcs12_opt_key_pbe,
    	},
    	{
    		.name = "keysig",
    		.desc = "Set MS key signature type",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.keytype,
    		.value = KEY_SIG,
    	},
    	{
    		.name = "macalg",
    		.argname = "alg",
    		.desc = "Digest algorithm used in MAC (default SHA1)",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.macalg,
    	},
    	{
    		.name = "maciter",
    		.desc = "Use MAC iteration",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.maciter,
    		.value = PKCS12_DEFAULT_ITER,
    	},
    	{
    		.name = "name",
    		.argname = "name",
    		.desc = "Use name as friendly name",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.name,
    	},
    	{
    		.name = "nocerts",
    		.desc = "Don't output certificates",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = NOCERTS,
    	},
    	{
    		.name = "nodes",
    		.desc = "Don't encrypt private keys",
    		.type = OPTION_ARGV_FUNC,
    		.opt.argvfunc = pkcs12_opt_enc,
    	},
    	{
    		.name = "noiter",
    		.desc = "Don't use encryption iteration",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.iter,
    		.value = 1,
    	},
    	{
    		.name = "nokeys",
    		.desc = "Don't output private keys",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = NOKEYS,
    	},
    	{
    		.name = "nomac",
    		.desc = "Don't generate MAC",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.maciter,
    		.value = -1,
    	},
    	{
    		.name = "nomaciter",
    		.desc = "Don't use MAC iteration",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.maciter,
    		.value = 1,
    	},
    	{
    		.name = "nomacver",
    		.desc = "Don't verify MAC",
    		.type = OPTION_VALUE,
    		.opt.value = &cfg.macver,
    		.value = 0,
    	},
    	{
    		.name = "noout",
    		.desc = "Don't output anything, just verify",
    		.type = OPTION_VALUE_OR,
    		.opt.value = &cfg.options,
    		.value = (NOKEYS | NOCERTS),
    	},
    	{
    		.name = "out",
    		.argname = "file",
    		.desc = "Output filename",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.outfile,
    	},
    	{
    		.name = "passin",
    		.argname = "arg",
    		.desc = "Input file passphrase source",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.passargin,
    	},
    	{
    		.name = "passout",
    		.argname = "arg",
    		.desc = "Output file passphrase source",
    		.type = OPTION_ARG,
    		.opt.arg = &cfg.passargout,
    	},
    	{
    		.name = "password",
    		.argname = "arg",
    		.desc = "Set import/export password source",
    		.type = OPTION_ARG_FUNC,
    		.opt.argfunc = pkcs12_opt_passarg,
    	},
    	{
    		.name = "twopass",
    		.desc = "Separate MAC, encryption passwords",
    		.type = OPTION_FLAG,
    		.opt.flag = &cfg.twopass,
    	},
    	{ NULL },
    };
    
    static void
    pkcs12_usage(void)
    {
    	fprintf(stderr, "usage: pkcs12 [-aes128 | -aes192 | -aes256 |");
    	fprintf(stderr, " -camellia128 |\n");
    	fprintf(stderr, "    -camellia192 | -camellia256 | -des | -des3 |");
    	fprintf(stderr, " -idea]\n");
    	fprintf(stderr, "    [-cacerts] [-CAfile file] [-caname name]\n");
    	fprintf(stderr, "    [-CApath directory] [-certfile file]");
    	fprintf(stderr, " [-certpbe alg]\n");
    	fprintf(stderr, "    [-chain] [-clcerts] [-CSP name] [-descert]");
    	fprintf(stderr, " [-export]\n");
    	fprintf(stderr, "    [-in file] [-info] [-inkey file] [-keyex]");
    	fprintf(stderr, " [-keypbe alg]\n");
    	fprintf(stderr, "    [-keysig] [-LMK] [-macalg alg] [-maciter]");
    	fprintf(stderr, " [-name name]\n");
    	fprintf(stderr, "    [-nocerts] [-nodes] [-noiter] [-nokeys]");
    	fprintf(stderr, " [-nomac]\n");
    	fprintf(stderr, "    [-nomaciter] [-nomacver] [-noout] [-out file]\n");
    	fprintf(stderr, "    [-passin arg] [-passout arg] [-password arg]");
    	fprintf(stderr, " [-twopass]\n\n");
    	options_usage(pkcs12_options);
    	fprintf(stderr, "\n");
    }
    
    int
    pkcs12_main(int argc, char **argv)
    {
    	BIO *in = NULL, *out = NULL;
    	PKCS12 *p12 = NULL;
    	char pass[50], macpass[50];
    	int ret = 1;
    	char *cpass = NULL, *mpass = NULL;
    	char *passin = NULL, *passout = NULL;
    
    	if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
    		perror("pledge");
    		exit(1);
    	}
    
    	memset(&cfg, 0, sizeof(cfg));
    	cfg.cert_pbe = NID_pbe_WithSHA1And40BitRC2_CBC;
    	cfg.enc = EVP_des_ede3_cbc();
    	cfg.iter = PKCS12_DEFAULT_ITER;
    	cfg.key_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
    	cfg.maciter = PKCS12_DEFAULT_ITER;
    	cfg.macver = 1;
    
    	if (options_parse(argc, argv, pkcs12_options, NULL, NULL) != 0) {
    		pkcs12_usage();
    		goto end;
    	}
    
    	if (cfg.passarg != NULL) {
    		if (cfg.export_cert)
    			cfg.passargout = cfg.passarg;
    		else
    			cfg.passargin = cfg.passarg;
    	}
    	if (!app_passwd(bio_err, cfg.passargin,
    	    cfg.passargout, &passin, &passout)) {
    		BIO_printf(bio_err, "Error getting passwords\n");
    		goto end;
    	}
    	if (cpass == NULL) {
    		if (cfg.export_cert)
    			cpass = passout;
    		else
    			cpass = passin;
    	}
    	if (cpass != NULL) {
    		mpass = cpass;
    		cfg.noprompt = 1;
    	} else {
    		cpass = pass;
    		mpass = macpass;
    	}
    
    	if (cfg.infile == NULL)
    		in = BIO_new_fp(stdin, BIO_NOCLOSE);
    	else
    		in = BIO_new_file(cfg.infile, "rb");
    	if (in == NULL) {
    		BIO_printf(bio_err, "Error opening input file %s\n",
    		    cfg.infile ? cfg.infile : "<stdin>");
    		perror(cfg.infile);
    		goto end;
    	}
    
    	if (cfg.outfile == NULL) {
    		out = BIO_new_fp(stdout, BIO_NOCLOSE);
    	} else
    		out = BIO_new_file(cfg.outfile, "wb");
    	if (out == NULL) {
    		BIO_printf(bio_err, "Error opening output file %s\n",
    		    cfg.outfile ? cfg.outfile : "<stdout>");
    		perror(cfg.outfile);
    		goto end;
    	}
    	if (cfg.twopass) {
    		if (EVP_read_pw_string(macpass, sizeof macpass,
    		    "Enter MAC Password:", cfg.export_cert)) {
    			BIO_printf(bio_err, "Can't read Password\n");
    			goto end;
    		}
    	}
    	if (cfg.export_cert) {
    		EVP_PKEY *key = NULL;
    		X509 *ucert = NULL, *x = NULL;
    		STACK_OF(X509) *certs = NULL;
    		const EVP_MD *macmd = NULL;
    		unsigned char *catmp = NULL;
    		int i;
    
    		if ((cfg.options & (NOCERTS | NOKEYS)) ==
    		    (NOCERTS | NOKEYS)) {
    			BIO_printf(bio_err, "Nothing to do!\n");
    			goto export_end;
    		}
    		if (cfg.options & NOCERTS)
    			cfg.chain = 0;
    
    		if (!(cfg.options & NOKEYS)) {
    			key = load_key(bio_err, cfg.keyname ?
    			    cfg.keyname : cfg.infile,
    			    FORMAT_PEM, 1, passin, "private key");
    			if (!key)
    				goto export_end;
    		}
    
    		/* Load in all certs in input file */
    		if (!(cfg.options & NOCERTS)) {
    			certs = load_certs(bio_err, cfg.infile,
    			    FORMAT_PEM, NULL, "certificates");
    			if (certs == NULL)
    				goto export_end;
    
    			if (key != NULL) {
    				/* Look for matching private key */
    				for (i = 0; i < sk_X509_num(certs); i++) {
    					x = sk_X509_value(certs, i);
    					if (X509_check_private_key(x, key)) {
    						ucert = x;
    						/* Zero keyid and alias */
    						X509_keyid_set1(ucert, NULL, 0);
    						X509_alias_set1(ucert, NULL, 0);
    						/* Remove from list */
    						(void) sk_X509_delete(certs, i);
    						break;
    					}
    				}
    				if (ucert == NULL) {
    					BIO_printf(bio_err,
    					    "No certificate matches private key\n");
    					goto export_end;
    				}
    			}
    		}
    
    		/* Add any more certificates asked for */
    		if (cfg.certfile != NULL) {
    			STACK_OF(X509) *morecerts = NULL;
    			if ((morecerts = load_certs(bio_err,
    			    cfg.certfile, FORMAT_PEM, NULL,
    			    "certificates from certfile")) == NULL)
    				goto export_end;
    			while (sk_X509_num(morecerts) > 0) {
    				X509 *cert = sk_X509_shift(morecerts);
    
    				if (!sk_X509_push(certs, cert)) {
    					X509_free(cert);
    					sk_X509_pop_free(morecerts, X509_free);
    					goto export_end;
    				}
    			}
    
    			sk_X509_free(morecerts);
    		}
    
    
    		/* If chaining get chain from user cert */
    		if (cfg.chain) {
    			int vret;
    			STACK_OF(X509) *chain2;
    			X509_STORE *store = X509_STORE_new();
    			if (store == NULL) {
    				BIO_printf(bio_err,
    				    "Memory allocation error\n");
    				goto export_end;
    			}
    			if (!X509_STORE_load_locations(store,
    			    cfg.CAfile, cfg.CApath))
    				X509_STORE_set_default_paths(store);
    
    			vret = get_cert_chain(ucert, store, &chain2);
    			X509_STORE_free(store);
    
    			if (vret == X509_V_OK) {
    				/* Exclude verified certificate */
    				X509_free(sk_X509_shift(chain2));
    
    				while (sk_X509_num(chain2) > 0) {
    					X509 *cert = sk_X509_shift(chain2);
    
    					if (!sk_X509_push(certs, cert)) {
    						X509_free(cert);
    						sk_X509_pop_free(chain2,
    						    X509_free);
    						goto export_end;
    					}
    				}
    				sk_X509_free(chain2);
    			} else {
    				if (vret != X509_V_ERR_UNSPECIFIED)
    					BIO_printf(bio_err,
    					    "Error %s getting chain.\n",
    					    X509_verify_cert_error_string(
    					    vret));
    				else
    					ERR_print_errors(bio_err);
    				sk_X509_pop_free(chain2, X509_free);
    				goto export_end;
    			}
    		}
    		/* Add any CA names */
    
    		for (i = 0; i < sk_OPENSSL_STRING_num(cfg.canames);
    		    i++) {
    			catmp = (unsigned char *) sk_OPENSSL_STRING_value(
    			    cfg.canames, i);
    			X509_alias_set1(sk_X509_value(certs, i), catmp, -1);
    		}
    
    		if (!cfg.noprompt &&
    		    EVP_read_pw_string(pass, sizeof pass,
    		    "Enter Export Password:", 1)) {
    			BIO_printf(bio_err, "Can't read Password\n");
    			goto export_end;
    		}
    		if (!cfg.twopass)
    			strlcpy(macpass, pass, sizeof macpass);
    
    
    		p12 = PKCS12_create(cpass, cfg.name, key, ucert,
    		    certs, cfg.key_pbe, cfg.cert_pbe,
    		    cfg.iter, -1, cfg.keytype);
    
    		if (p12 == NULL) {
    			ERR_print_errors(bio_err);
    			goto export_end;
    		}
    		if (cfg.macalg != NULL) {
    			macmd = EVP_get_digestbyname(cfg.macalg);
    			if (macmd == NULL) {
    				BIO_printf(bio_err,
    				    "Unknown digest algorithm %s\n",
    				    cfg.macalg);
    			}
    		}
    		if (cfg.maciter != -1)
    			PKCS12_set_mac(p12, mpass, -1, NULL, 0,
    			    cfg.maciter, macmd);
    
    		i2d_PKCS12_bio(out, p12);
    
    		ret = 0;
    
     export_end:
    		EVP_PKEY_free(key);
    		sk_X509_pop_free(certs, X509_free);
    		X509_free(ucert);
    
    		goto end;
    
    	}
    	if ((p12 = d2i_PKCS12_bio(in, NULL)) == NULL) {
    		ERR_print_errors(bio_err);
    		goto end;
    	}
    	if (!cfg.noprompt && EVP_read_pw_string(pass, sizeof pass,
    	    "Enter Import Password:", 0)) {
    		BIO_printf(bio_err, "Can't read Password\n");
    		goto end;
    	}
    
    	if (!cfg.twopass)
    		strlcpy(macpass, pass, sizeof macpass);
    
    	if ((cfg.options & INFO) != 0 && PKCS12_mac_present(p12)) {
    		const ASN1_INTEGER *iter;
    
    		PKCS12_get0_mac(NULL, NULL, NULL, &iter, p12);
    		BIO_printf(bio_err, "MAC Iteration %ld\n",
    		    iter != NULL ? ASN1_INTEGER_get(iter) : 1);
    	}
    	if (cfg.macver) {
    		/* If we enter empty password try no password first */
    		if (!mpass[0] && PKCS12_verify_mac(p12, NULL, 0)) {
    			/* If mac and crypto pass the same set it to NULL too */
    			if (!cfg.twopass)
    				cpass = NULL;
    		} else if (!PKCS12_verify_mac(p12, mpass, -1)) {
    			BIO_printf(bio_err,
    			    "Mac verify error: invalid password?\n");
    			ERR_print_errors(bio_err);
    			goto end;
    		}
    		BIO_printf(bio_err, "MAC verified OK\n");
    	}
    	if (!dump_certs_keys_p12(out, p12, cpass, -1, cfg.options,
    	    passout)) {
    		BIO_printf(bio_err, "Error outputting keys and certificates\n");
    		ERR_print_errors(bio_err);
    		goto end;
    	}
    	ret = 0;
     end:
    	PKCS12_free(p12);
    	BIO_free(in);
    	BIO_free_all(out);
    	sk_OPENSSL_STRING_free(cfg.canames);
    	free(passin);
    	free(passout);
    
    	return (ret);
    }
    
    static int
    dump_certs_keys_p12(BIO *out, PKCS12 *p12, char *pass, int passlen, int options,
        char *pempass)
    {
    	STACK_OF(PKCS7) *asafes = NULL;
    	STACK_OF(PKCS12_SAFEBAG) *bags;
    	int i, bagnid;
    	int ret = 0;
    	PKCS7 *p7;
    
    	if ((asafes = PKCS12_unpack_authsafes(p12)) == NULL)
    		return 0;
    	for (i = 0; i < sk_PKCS7_num(asafes); i++) {
    		p7 = sk_PKCS7_value(asafes, i);
    		bagnid = OBJ_obj2nid(p7->type);
    		if (bagnid == NID_pkcs7_data) {
    			bags = PKCS12_unpack_p7data(p7);
    			if (options & INFO)
    				BIO_printf(bio_err, "PKCS7 Data\n");
    		} else if (bagnid == NID_pkcs7_encrypted) {
    			if (options & INFO) {
    				BIO_printf(bio_err, "PKCS7 Encrypted data: ");
    				alg_print(bio_err,
    				    p7->d.encrypted->enc_data->algorithm);
    			}
    			bags = PKCS12_unpack_p7encdata(p7, pass, passlen);
    		} else
    			continue;
    		if (bags == NULL)
    			goto err;
    		if (!dump_certs_pkeys_bags(out, bags, pass, passlen,
    			options, pempass)) {
    			sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
    			goto err;
    		}
    		sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
    		bags = NULL;
    	}
    	ret = 1;
    
     err:
    	sk_PKCS7_pop_free(asafes, PKCS7_free);
    	return ret;
    }
    
    static int
    dump_certs_pkeys_bags(BIO *out, const STACK_OF(PKCS12_SAFEBAG) *bags,
        char *pass, int passlen, int options, char *pempass)
    {
    	int i;
    
    	for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
    		if (!dump_certs_pkeys_bag(out,
    			sk_PKCS12_SAFEBAG_value(bags, i),
    			pass, passlen,
    			options, pempass))
    			return 0;
    	}
    	return 1;
    }
    
    static int
    dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass, int passlen,
        int options, char *pempass)
    {
    	EVP_PKEY *pkey;
    	const STACK_OF(X509_ATTRIBUTE) *attrs;
    	X509 *x509;
    
    	attrs = PKCS12_SAFEBAG_get0_attrs(bag);
    
    	switch (PKCS12_SAFEBAG_get_nid(bag)) {
    	case NID_keyBag:
    	    {
    		const PKCS8_PRIV_KEY_INFO *p8;
    
    		if (options & INFO)
    			BIO_printf(bio_err, "Key bag\n");
    		if (options & NOKEYS)
    			return 1;
    		print_attribs(out, attrs, "Bag Attributes");
    		if ((p8 = PKCS12_SAFEBAG_get0_p8inf(bag)) == NULL)
    			return 0;
    		if ((pkey = EVP_PKCS82PKEY(p8)) == NULL)
    			return 0;
    		print_attribs(out, PKCS8_pkey_get0_attrs(p8), "Key Attributes");
    		PEM_write_bio_PrivateKey(out, pkey, cfg.enc, NULL, 0,
    		    NULL, pempass);
    		EVP_PKEY_free(pkey);
    		break;
    	    }
    
    	case NID_pkcs8ShroudedKeyBag:
    	    {
    		PKCS8_PRIV_KEY_INFO *p8;
    
    		if (options & INFO) {
    			const X509_SIG *tp8;
    			const X509_ALGOR *tp8alg;
    
    			BIO_printf(bio_err, "Shrouded Keybag: ");
    			if ((tp8 = PKCS12_SAFEBAG_get0_pkcs8(bag)) == NULL)
    				return 0;
    			X509_SIG_get0(tp8, &tp8alg, NULL);
    			alg_print(bio_err, tp8alg);
    		}
    		if (options & NOKEYS)
    			return 1;
    		print_attribs(out, attrs, "Bag Attributes");
    		if ((p8 = PKCS12_decrypt_skey(bag, pass, passlen)) == NULL)
    			return 0;
    		if ((pkey = EVP_PKCS82PKEY(p8)) == NULL) {
    			PKCS8_PRIV_KEY_INFO_free(p8);
    			return 0;
    		}
    		print_attribs(out, PKCS8_pkey_get0_attrs(p8), "Key Attributes");
    		PKCS8_PRIV_KEY_INFO_free(p8);
    		PEM_write_bio_PrivateKey(out, pkey, cfg.enc, NULL, 0,
    		    NULL, pempass);
    		EVP_PKEY_free(pkey);
    		break;
    	    }
    
    	case NID_certBag:
    		if (options & INFO)
    			BIO_printf(bio_err, "Certificate bag\n");
    		if (options & NOCERTS)
    			return 1;
    		if (PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID) != NULL) {
    			if (options & CACERTS)
    				return 1;
    		} else if (options & CLCERTS)
    			return 1;
    		print_attribs(out, attrs, "Bag Attributes");
    		if (PKCS12_SAFEBAG_get_bag_nid(bag) != NID_x509Certificate)
    			return 1;
    		if ((x509 = PKCS12_certbag2x509(bag)) == NULL)
    			return 0;
    		dump_cert_text(out, x509);
    		PEM_write_bio_X509(out, x509);
    		X509_free(x509);
    		break;
    
    	case NID_safeContentsBag:
    		if (options & INFO)
    			BIO_printf(bio_err, "Safe Contents bag\n");
    		print_attribs(out, attrs, "Bag Attributes");
    		return dump_certs_pkeys_bags(out, PKCS12_SAFEBAG_get0_safes(bag),
    		    pass, passlen, options, pempass);
    
    	default:
    		BIO_printf(bio_err, "Warning unsupported bag type: ");
    		i2a_ASN1_OBJECT(bio_err, PKCS12_SAFEBAG_get0_type(bag));
    		BIO_printf(bio_err, "\n");
    		return 1;
    		break;
    	}
    	return 1;
    }
    
    /* Given a single certificate return a verified chain or NULL if error */
    static int
    get_cert_chain(X509 *cert, X509_STORE *store, STACK_OF(X509) **out_chain)
    {
    	X509_STORE_CTX *store_ctx = NULL;
    	STACK_OF(X509) *chain = NULL;
    	int ret = X509_V_ERR_UNSPECIFIED;
    
    	if ((store_ctx = X509_STORE_CTX_new()) == NULL)
    		goto err;
    	if (!X509_STORE_CTX_init(store_ctx, store, cert, NULL))
    		goto err;
    
    	if (X509_verify_cert(store_ctx) > 0) {
    		if ((chain = X509_STORE_CTX_get1_chain(store_ctx)) == NULL)
    			goto err;
    	}
    	ret = X509_STORE_CTX_get_error(store_ctx);
    
     err:
    	X509_STORE_CTX_free(store_ctx);
    	*out_chain = chain;
    
    	return ret;
    }
    
    static int
    alg_print(BIO *x, const X509_ALGOR *alg)
    {
    	PBEPARAM *pbe = NULL;
    	const ASN1_OBJECT *aobj;
    	int param_type;
    	const void *param;
    
    	X509_ALGOR_get0(&aobj, &param_type, &param, alg);
    	if (param_type == V_ASN1_SEQUENCE)
    		pbe = ASN1_item_unpack(param, &PBEPARAM_it);
    	if (pbe == NULL)
    		return 1;
    	BIO_printf(bio_err, "%s, Iteration %ld\n",
    	    OBJ_nid2ln(OBJ_obj2nid(aobj)),
    	    ASN1_INTEGER_get(pbe->iter));
    	ASN1_item_free((ASN1_VALUE *)pbe, &PBEPARAM_it);
    	return 1;
    }
    
    static void
    hex_print(BIO *out, const ASN1_STRING *str)
    {
    	const unsigned char *buf = ASN1_STRING_get0_data(str);
    	int len = ASN1_STRING_length(str);
    	int i;
    
    	for (i = 0; i < len; i++)
    		BIO_printf(out, "%02X ", buf[i]);
    }
    
    /* Generalised attribute print: handle PKCS#8 and bag attributes */
    static void
    print_attribute(BIO *out, const ASN1_TYPE *av)
    {
    	char *value;
    
    	switch (av->type) {
    	case V_ASN1_BMPSTRING:
    		value = OPENSSL_uni2asc(
    		    ASN1_STRING_get0_data(av->value.bmpstring),
    		    ASN1_STRING_length(av->value.bmpstring));
    		BIO_printf(out, "%s\n", value != NULL ? value : "(null)");
    		free(value);
    		break;
    
    	case V_ASN1_OCTET_STRING:
    		hex_print(out, av->value.octet_string);
    		BIO_printf(out, "\n");
    		break;
    
    	case V_ASN1_BIT_STRING:
    		hex_print(out, av->value.bit_string);
    		BIO_printf(out, "\n");
    		break;
    
    	default:
    		BIO_printf(out, "<Unsupported tag %d>\n",
    		    av->type);
    		break;
    	}
    }
    
    static int
    print_attribs(BIO *out, const STACK_OF(X509_ATTRIBUTE) *attrlst,
        const char *name)
    {
    	X509_ATTRIBUTE *attr;
    	ASN1_TYPE *av;
    	int i, j, attr_nid;
    
    	if (attrlst == NULL) {
    		BIO_printf(out, "%s: <No Attributes>\n", name);
    		return 1;
    	}
    	if (!sk_X509_ATTRIBUTE_num(attrlst)) {
    		BIO_printf(out, "%s: <Empty Attributes>\n", name);
    		return 1;
    	}
    	BIO_printf(out, "%s\n", name);
    	for (i = 0; i < sk_X509_ATTRIBUTE_num(attrlst); i++) {
    		ASN1_OBJECT *obj;
    
    		attr = sk_X509_ATTRIBUTE_value(attrlst, i);
    		obj = X509_ATTRIBUTE_get0_object(attr);
    		attr_nid = OBJ_obj2nid(X509_ATTRIBUTE_get0_object(attr));
    		BIO_printf(out, "    ");
    		if (attr_nid == NID_undef) {
    			i2a_ASN1_OBJECT(out, obj);
    			BIO_printf(out, ": ");
    		} else
    			BIO_printf(out, "%s: ", OBJ_nid2ln(attr_nid));
    
    		if (X509_ATTRIBUTE_count(attr)) {
    			for (j = 0; j < X509_ATTRIBUTE_count(attr); j++) {
    				av = X509_ATTRIBUTE_get0_type(attr, j);
    				print_attribute(out, av);
    			}
    		} else
    			BIO_printf(out, "<No Values>\n");
    	}
    	return 1;
    }
    
    static int
    set_pbe(BIO *err, int *ppbe, const char *str)
    {
    	if (str == NULL)
    		return 0;
    	if (strcmp(str, "NONE") == 0) {
    		*ppbe = -1;
    		return 1;
    	}
    	*ppbe = OBJ_txt2nid(str);
    	if (*ppbe == NID_undef) {
    		BIO_printf(bio_err, "Unknown PBE algorithm %s\n", str);
    		return 0;
    	}
    	return 1;
    }
    
    #endif