/* $OpenBSD: pkcs12.c,v 1.9 2017/01/20 08:57:12 deraadt 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>

const EVP_CIPHER *enc;

#define NOKEYS		0x1
#define NOCERTS 	0x2
#define INFO		0x4
#define CLCERTS		0x8
#define CACERTS		0x10

int get_cert_chain(X509 * cert, X509_STORE * store, STACK_OF(X509) ** chain);
int dump_certs_keys_p12(BIO * out, PKCS12 * p12, char *pass, int passlen,
    int options, char *pempass);
int dump_certs_pkeys_bags(BIO * out, STACK_OF(PKCS12_SAFEBAG) * bags, char *pass,
    int passlen, int options, char *pempass);
int dump_certs_pkeys_bag(BIO * out, PKCS12_SAFEBAG * bags, char *pass, int passlen,
    int options, char *pempass);
int print_attribs(BIO * out, STACK_OF(X509_ATTRIBUTE) * attrlst, const char *name);
void hex_prin(BIO * out, unsigned char *buf, int len);
int alg_print(BIO * x, X509_ALGOR * alg);
int cert_load(BIO * in, STACK_OF(X509) * sk);
static int set_pbe(BIO * err, int *ppbe, const char *str);

int
pkcs12_main(int argc, char **argv)
{
	char *infile = NULL, *outfile = NULL, *keyname = NULL;
	char *certfile = NULL;
	BIO *in = NULL, *out = NULL;
	char **args;
	char *name = NULL;
	char *csp_name = NULL;
	int add_lmk = 0;
	PKCS12 *p12 = NULL;
	char pass[50], macpass[50];
	int export_cert = 0;
	int options = 0;
	int chain = 0;
	int badarg = 0;
	int iter = PKCS12_DEFAULT_ITER;
	int maciter = PKCS12_DEFAULT_ITER;
	int twopass = 0;
	int keytype = 0;
	int cert_pbe;
	int key_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
	int ret = 1;
	int macver = 1;
	int noprompt = 0;
	STACK_OF(OPENSSL_STRING) * canames = NULL;
	char *cpass = NULL, *mpass = NULL;
	char *passargin = NULL, *passargout = NULL, *passarg = NULL;
	char *passin = NULL, *passout = NULL;
	char *macalg = NULL;
	char *CApath = NULL, *CAfile = NULL;

	if (single_execution) {
		if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
			perror("pledge");
			exit(1);
		}
	}

	cert_pbe = NID_pbe_WithSHA1And40BitRC2_CBC;

	enc = EVP_des_ede3_cbc();

	args = argv + 1;

	while (*args) {
		if (*args[0] == '-') {
			if (!strcmp(*args, "-nokeys"))
				options |= NOKEYS;
			else if (!strcmp(*args, "-keyex"))
				keytype = KEY_EX;
			else if (!strcmp(*args, "-keysig"))
				keytype = KEY_SIG;
			else if (!strcmp(*args, "-nocerts"))
				options |= NOCERTS;
			else if (!strcmp(*args, "-clcerts"))
				options |= CLCERTS;
			else if (!strcmp(*args, "-cacerts"))
				options |= CACERTS;
			else if (!strcmp(*args, "-noout"))
				options |= (NOKEYS | NOCERTS);
			else if (!strcmp(*args, "-info"))
				options |= INFO;
			else if (!strcmp(*args, "-chain"))
				chain = 1;
			else if (!strcmp(*args, "-twopass"))
				twopass = 1;
			else if (!strcmp(*args, "-nomacver"))
				macver = 0;
			else if (!strcmp(*args, "-descert"))
				cert_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
			else if (!strcmp(*args, "-export"))
				export_cert = 1;
			else if (!strcmp(*args, "-des"))
				enc = EVP_des_cbc();
			else if (!strcmp(*args, "-des3"))
				enc = EVP_des_ede3_cbc();
#ifndef OPENSSL_NO_IDEA
			else if (!strcmp(*args, "-idea"))
				enc = EVP_idea_cbc();
#endif
#ifndef OPENSSL_NO_AES
			else if (!strcmp(*args, "-aes128"))
				enc = EVP_aes_128_cbc();
			else if (!strcmp(*args, "-aes192"))
				enc = EVP_aes_192_cbc();
			else if (!strcmp(*args, "-aes256"))
				enc = EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
			else if (!strcmp(*args, "-camellia128"))
				enc = EVP_camellia_128_cbc();
			else if (!strcmp(*args, "-camellia192"))
				enc = EVP_camellia_192_cbc();
			else if (!strcmp(*args, "-camellia256"))
				enc = EVP_camellia_256_cbc();
#endif
			else if (!strcmp(*args, "-noiter"))
				iter = 1;
			else if (!strcmp(*args, "-maciter"))
				maciter = PKCS12_DEFAULT_ITER;
			else if (!strcmp(*args, "-nomaciter"))
				maciter = 1;
			else if (!strcmp(*args, "-nomac"))
				maciter = -1;
			else if (!strcmp(*args, "-macalg"))
				if (args[1]) {
					args++;
					macalg = *args;
				} else
					badarg = 1;
			else if (!strcmp(*args, "-nodes"))
				enc = NULL;
			else if (!strcmp(*args, "-certpbe")) {
				if (!set_pbe(bio_err, &cert_pbe, *++args))
					badarg = 1;
			} else if (!strcmp(*args, "-keypbe")) {
				if (!set_pbe(bio_err, &key_pbe, *++args))
					badarg = 1;
			} else if (!strcmp(*args, "-inkey")) {
				if (args[1]) {
					args++;
					keyname = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-certfile")) {
				if (args[1]) {
					args++;
					certfile = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-name")) {
				if (args[1]) {
					args++;
					name = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-LMK"))
				add_lmk = 1;
			else if (!strcmp(*args, "-CSP")) {
				if (args[1]) {
					args++;
					csp_name = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-caname")) {
				if (args[1]) {
					args++;
					if (!canames)
						canames = sk_OPENSSL_STRING_new_null();
					sk_OPENSSL_STRING_push(canames, *args);
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-in")) {
				if (args[1]) {
					args++;
					infile = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-out")) {
				if (args[1]) {
					args++;
					outfile = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-passin")) {
				if (args[1]) {
					args++;
					passargin = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-passout")) {
				if (args[1]) {
					args++;
					passargout = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-password")) {
				if (args[1]) {
					args++;
					passarg = *args;
					noprompt = 1;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-CApath")) {
				if (args[1]) {
					args++;
					CApath = *args;
				} else
					badarg = 1;
			} else if (!strcmp(*args, "-CAfile")) {
				if (args[1]) {
					args++;
					CAfile = *args;
				} else
					badarg = 1;
			} else
				badarg = 1;

		} else
			badarg = 1;
		args++;
	}

	if (badarg) {
		BIO_printf(bio_err, "Usage: pkcs12 [options]\n");
		BIO_printf(bio_err, "where options are\n");
		BIO_printf(bio_err, "-export       output PKCS12 file\n");
		BIO_printf(bio_err, "-chain        add certificate chain\n");
		BIO_printf(bio_err, "-inkey file   private key if not infile\n");
		BIO_printf(bio_err, "-certfile f   add all certs in f\n");
		BIO_printf(bio_err, "-CApath arg   - PEM format directory of CA's\n");
		BIO_printf(bio_err, "-CAfile arg   - PEM format file of CA's\n");
		BIO_printf(bio_err, "-name \"name\"  use name as friendly name\n");
		BIO_printf(bio_err, "-caname \"nm\"  use nm as CA friendly name (can be used more than once).\n");
		BIO_printf(bio_err, "-in  infile   input filename\n");
		BIO_printf(bio_err, "-out outfile  output filename\n");
		BIO_printf(bio_err, "-noout        don't output anything, just verify.\n");
		BIO_printf(bio_err, "-nomacver     don't verify MAC.\n");
		BIO_printf(bio_err, "-nocerts      don't output certificates.\n");
		BIO_printf(bio_err, "-clcerts      only output client certificates.\n");
		BIO_printf(bio_err, "-cacerts      only output CA certificates.\n");
		BIO_printf(bio_err, "-nokeys       don't output private keys.\n");
		BIO_printf(bio_err, "-info         give info about PKCS#12 structure.\n");
		BIO_printf(bio_err, "-des          encrypt private keys with DES\n");
		BIO_printf(bio_err, "-des3         encrypt private keys with triple DES (default)\n");
#ifndef OPENSSL_NO_IDEA
		BIO_printf(bio_err, "-idea         encrypt private keys with idea\n");
#endif
#ifndef OPENSSL_NO_AES
		BIO_printf(bio_err, "-aes128, -aes192, -aes256\n");
		BIO_printf(bio_err, "              encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
		BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n");
		BIO_printf(bio_err, "              encrypt PEM output with cbc camellia\n");
#endif
		BIO_printf(bio_err, "-nodes        don't encrypt private keys\n");
		BIO_printf(bio_err, "-noiter       don't use encryption iteration\n");
		BIO_printf(bio_err, "-nomaciter    don't use MAC iteration\n");
		BIO_printf(bio_err, "-maciter      use MAC iteration\n");
		BIO_printf(bio_err, "-nomac        don't generate MAC\n");
		BIO_printf(bio_err, "-twopass      separate MAC, encryption passwords\n");
		BIO_printf(bio_err, "-descert      encrypt PKCS#12 certificates with triple DES (default RC2-40)\n");
		BIO_printf(bio_err, "-certpbe alg  specify certificate PBE algorithm (default RC2-40)\n");
		BIO_printf(bio_err, "-keypbe alg   specify private key PBE algorithm (default 3DES)\n");
		BIO_printf(bio_err, "-macalg alg   digest algorithm used in MAC (default SHA1)\n");
		BIO_printf(bio_err, "-keyex        set MS key exchange type\n");
		BIO_printf(bio_err, "-keysig       set MS key signature type\n");
		BIO_printf(bio_err, "-password p   set import/export password source\n");
		BIO_printf(bio_err, "-passin p     input file pass phrase source\n");
		BIO_printf(bio_err, "-passout p    output file pass phrase source\n");
		BIO_printf(bio_err, "-CSP name     Microsoft CSP name\n");
		BIO_printf(bio_err, "-LMK          Add local machine keyset attribute to private key\n");
		goto end;
	}

	if (passarg) {
		if (export_cert)
			passargout = passarg;
		else
			passargin = passarg;
	}
	if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
		BIO_printf(bio_err, "Error getting passwords\n");
		goto end;
	}
	if (!cpass) {
		if (export_cert)
			cpass = passout;
		else
			cpass = passin;
	}
	if (cpass) {
		mpass = cpass;
		noprompt = 1;
	} else {
		cpass = pass;
		mpass = macpass;
	}

	if (!infile)
		in = BIO_new_fp(stdin, BIO_NOCLOSE);
	else
		in = BIO_new_file(infile, "rb");
	if (!in) {
		BIO_printf(bio_err, "Error opening input file %s\n",
		    infile ? infile : "<stdin>");
		perror(infile);
		goto end;
	}

	if (!outfile) {
		out = BIO_new_fp(stdout, BIO_NOCLOSE);
	} else
		out = BIO_new_file(outfile, "wb");
	if (!out) {
		BIO_printf(bio_err, "Error opening output file %s\n",
		    outfile ? outfile : "<stdout>");
		perror(outfile);
		goto end;
	}
	if (twopass) {
		if (EVP_read_pw_string(macpass, sizeof macpass, "Enter MAC Password:", export_cert)) {
			BIO_printf(bio_err, "Can't read Password\n");
			goto end;
		}
	}
	if (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 ((options & (NOCERTS | NOKEYS)) == (NOCERTS | NOKEYS)) {
			BIO_printf(bio_err, "Nothing to do!\n");
			goto export_end;
		}
		if (options & NOCERTS)
			chain = 0;

		if (!(options & NOKEYS)) {
			key = load_key(bio_err, keyname ? keyname : infile,
			    FORMAT_PEM, 1, passin, "private key");
			if (!key)
				goto export_end;
		}

		/* Load in all certs in input file */
		if (!(options & NOCERTS)) {
			certs = load_certs(bio_err, infile, FORMAT_PEM, NULL,
			    "certificates");
			if (!certs)
				goto export_end;

			if (key) {
				/* 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) {
					BIO_printf(bio_err, "No certificate matches private key\n");
					goto export_end;
				}
			}
		}

		/* Add any more certificates asked for */
		if (certfile) {
			STACK_OF(X509) * morecerts = NULL;
			if (!(morecerts = load_certs(bio_err, certfile, FORMAT_PEM,
			    NULL, "certificates from certfile")))
				goto export_end;
			while (sk_X509_num(morecerts) > 0)
				sk_X509_push(certs, sk_X509_shift(morecerts));
			sk_X509_free(morecerts);
		}


		/* If chaining get chain from user cert */
		if (chain) {
			int vret;
			STACK_OF(X509) * chain2;
			X509_STORE *store = X509_STORE_new();
			if (!store) {
				BIO_printf(bio_err, "Memory allocation error\n");
				goto export_end;
			}
			if (!X509_STORE_load_locations(store, CAfile, CApath))
				X509_STORE_set_default_paths(store);

			vret = get_cert_chain(ucert, store, &chain2);
			X509_STORE_free(store);

			if (!vret) {
				/* Exclude verified certificate */
				for (i = 1; i < sk_X509_num(chain2); i++)
					sk_X509_push(certs, sk_X509_value(chain2, i));
				/* Free first certificate */
				X509_free(sk_X509_value(chain2, 0));
				sk_X509_free(chain2);
			} else {
				if (vret >= 0)
					BIO_printf(bio_err, "Error %s getting chain.\n",
					    X509_verify_cert_error_string(vret));
				else
					ERR_print_errors(bio_err);
				goto export_end;
			}
		}
		/* Add any CA names */

		for (i = 0; i < sk_OPENSSL_STRING_num(canames); i++) {
			catmp = (unsigned char *) sk_OPENSSL_STRING_value(canames, i);
			X509_alias_set1(sk_X509_value(certs, i), catmp, -1);
		}

		if (csp_name && key)
			EVP_PKEY_add1_attr_by_NID(key, NID_ms_csp_name,
			    MBSTRING_ASC, (unsigned char *) csp_name, -1);

		if (add_lmk && key)
			EVP_PKEY_add1_attr_by_NID(key, NID_LocalKeySet, 0, NULL, -1);


		if (!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 (!twopass)
			strlcpy(macpass, pass, sizeof macpass);


		p12 = PKCS12_create(cpass, name, key, ucert, certs,
		    key_pbe, cert_pbe, iter, -1, keytype);

		if (!p12) {
			ERR_print_errors(bio_err);
			goto export_end;
		}
		if (macalg) {
			macmd = EVP_get_digestbyname(macalg);
			if (!macmd) {
				BIO_printf(bio_err, "Unknown digest algorithm %s\n",
				    macalg);
			}
		}
		if (maciter != -1)
			PKCS12_set_mac(p12, mpass, -1, NULL, 0, maciter, macmd);


		i2d_PKCS12_bio(out, p12);

		ret = 0;

export_end:

		if (key)
			EVP_PKEY_free(key);
		if (certs)
			sk_X509_pop_free(certs, X509_free);
		if (ucert)
			X509_free(ucert);

		goto end;

	}
	if (!(p12 = d2i_PKCS12_bio(in, NULL))) {
		ERR_print_errors(bio_err);
		goto end;
	}
	if (!noprompt && EVP_read_pw_string(pass, sizeof pass, "Enter Import Password:", 0)) {
		BIO_printf(bio_err, "Can't read Password\n");
		goto end;
	}

	if (!twopass)
		strlcpy(macpass, pass, sizeof macpass);

	if ((options & INFO) && p12->mac)
		BIO_printf(bio_err, "MAC Iteration %ld\n", p12->mac->iter ? ASN1_INTEGER_get(p12->mac->iter) : 1);
	if (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 (!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, options, passout)) {
		BIO_printf(bio_err, "Error outputting keys and certificates\n");
		ERR_print_errors(bio_err);
		goto end;
	}
	ret = 0;
end:
	if (p12)
		PKCS12_free(p12);
	BIO_free(in);
	BIO_free_all(out);
	if (canames)
		sk_OPENSSL_STRING_free(canames);
	free(passin);
	free(passout);

	return (ret);
}

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)))
		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)
			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:

	if (asafes)
		sk_PKCS7_pop_free(asafes, PKCS7_free);
	return ret;
}

int
dump_certs_pkeys_bags(BIO * out, 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;
}

int
dump_certs_pkeys_bag(BIO * out, PKCS12_SAFEBAG * bag, char *pass,
    int passlen, int options, char *pempass)
{
	EVP_PKEY *pkey;
	PKCS8_PRIV_KEY_INFO *p8;
	X509 *x509;

	switch (OBJ_obj2nid(bag->type)) {
	case NID_keyBag:
		if (options & INFO)
			BIO_printf(bio_err, "Key bag\n");
		if (options & NOKEYS)
			return 1;
		print_attribs(out, bag->attrib, "Bag Attributes");
		p8 = bag->value.keybag;
		if (!(pkey = EVP_PKCS82PKEY(p8)))
			return 0;
		print_attribs(out, p8->attributes, "Key Attributes");
		PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);
		EVP_PKEY_free(pkey);
		break;

	case NID_pkcs8ShroudedKeyBag:
		if (options & INFO) {
			BIO_printf(bio_err, "Shrouded Keybag: ");
			alg_print(bio_err, bag->value.shkeybag->algor);
		}
		if (options & NOKEYS)
			return 1;
		print_attribs(out, bag->attrib, "Bag Attributes");
		if (!(p8 = PKCS12_decrypt_skey(bag, pass, passlen)))
			return 0;
		if (!(pkey = EVP_PKCS82PKEY(p8))) {
			PKCS8_PRIV_KEY_INFO_free(p8);
			return 0;
		}
		print_attribs(out, p8->attributes, "Key Attributes");
		PKCS8_PRIV_KEY_INFO_free(p8);
		PEM_write_bio_PrivateKey(out, pkey, 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_get_attr(bag, NID_localKeyID)) {
			if (options & CACERTS)
				return 1;
		} else if (options & CLCERTS)
			return 1;
		print_attribs(out, bag->attrib, "Bag Attributes");
		if (OBJ_obj2nid(bag->value.bag->type) != NID_x509Certificate)
			return 1;
		if (!(x509 = PKCS12_certbag2x509(bag)))
			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, bag->attrib, "Bag Attributes");
		return dump_certs_pkeys_bags(out, bag->value.safes, pass,
		    passlen, options, pempass);

	default:
		BIO_printf(bio_err, "Warning unsupported bag type: ");
		i2a_ASN1_OBJECT(bio_err, bag->type);
		BIO_printf(bio_err, "\n");
		return 1;
		break;
	}
	return 1;
}

/* Given a single certificate return a verified chain or NULL if error */

/* Hope this is OK .... */

int
get_cert_chain(X509 * cert, X509_STORE * store, STACK_OF(X509) ** chain)
{
	X509_STORE_CTX store_ctx;
	STACK_OF(X509) * chn;
	int i = 0;

	/*
	 * FIXME: Should really check the return status of
	 * X509_STORE_CTX_init for an error, but how that fits into the
	 * return value of this function is less obvious.
	 */
	X509_STORE_CTX_init(&store_ctx, store, cert, NULL);
	if (X509_verify_cert(&store_ctx) <= 0) {
		i = X509_STORE_CTX_get_error(&store_ctx);
		if (i == 0)
			/*
			 * avoid returning 0 if X509_verify_cert() did not
			 * set an appropriate error value in the context
			 */
			i = -1;
		chn = NULL;
		goto err;
	} else
		chn = X509_STORE_CTX_get1_chain(&store_ctx);
err:
	X509_STORE_CTX_cleanup(&store_ctx);
	*chain = chn;

	return i;
}

int
alg_print(BIO * x, X509_ALGOR * alg)
{
	PBEPARAM *pbe;
	const unsigned char *p;
	p = alg->parameter->value.sequence->data;
	pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length);
	if (!pbe)
		return 1;
	BIO_printf(bio_err, "%s, Iteration %ld\n",
	    OBJ_nid2ln(OBJ_obj2nid(alg->algorithm)),
	    ASN1_INTEGER_get(pbe->iter));
	PBEPARAM_free(pbe);
	return 1;
}

/* Load all certificates from a given file */

int
cert_load(BIO * in, STACK_OF(X509) * sk)
{
	int ret;
	X509 *cert;
	ret = 0;
	while ((cert = PEM_read_bio_X509(in, NULL, NULL, NULL))) {
		ret = 1;
		sk_X509_push(sk, cert);
	}
	if (ret)
		ERR_clear_error();
	return ret;
}

/* Generalised attribute print: handle PKCS#8 and bag attributes */

int
print_attribs(BIO * out, STACK_OF(X509_ATTRIBUTE) * attrlst, const char *name)
{
	X509_ATTRIBUTE *attr;
	ASN1_TYPE *av;
	char *value;
	int i, attr_nid;
	if (!attrlst) {
		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++) {
		attr = sk_X509_ATTRIBUTE_value(attrlst, i);
		attr_nid = OBJ_obj2nid(attr->object);
		BIO_printf(out, "    ");
		if (attr_nid == NID_undef) {
			i2a_ASN1_OBJECT(out, attr->object);
			BIO_printf(out, ": ");
		} else
			BIO_printf(out, "%s: ", OBJ_nid2ln(attr_nid));

		if (sk_ASN1_TYPE_num(attr->value.set)) {
			av = sk_ASN1_TYPE_value(attr->value.set, 0);
			switch (av->type) {
			case V_ASN1_BMPSTRING:
				value = OPENSSL_uni2asc(av->value.bmpstring->data,
				    av->value.bmpstring->length);
				BIO_printf(out, "%s\n", value);
				free(value);
				break;

			case V_ASN1_OCTET_STRING:
				hex_prin(out, av->value.octet_string->data,
				    av->value.octet_string->length);
				BIO_printf(out, "\n");
				break;

			case V_ASN1_BIT_STRING:
				hex_prin(out, av->value.bit_string->data,
				    av->value.bit_string->length);
				BIO_printf(out, "\n");
				break;

			default:
				BIO_printf(out, "<Unsupported tag %d>\n", av->type);
				break;
			}
		} else
			BIO_printf(out, "<No Values>\n");
	}
	return 1;
}

void
hex_prin(BIO * out, unsigned char *buf, int len)
{
	int i;
	for (i = 0; i < len; i++)
		BIO_printf(out, "%02X ", buf[i]);
}

static int
set_pbe(BIO * err, int *ppbe, const char *str)
{
	if (!str)
		return 0;
	if (!strcmp(str, "NONE")) {
		*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
