text: /* $OpenBSD: pkcs12.c,v 1.35 2014/06/12 15:49:27 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, char **);
  
  int
  pkcs12_main(int argc, char **argv)
  {
  	ENGINE *e = NULL;
  	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;
  #ifndef OPENSSL_NO_ENGINE
  	char *engine = NULL;
  #endif
  
  	cert_pbe = NID_pbe_WithSHA1And40BitRC2_CBC;
  
  	enc = EVP_des_ede3_cbc();
  
  	if (!load_config(bio_err, NULL))
  		goto end;
  
  	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;
  #ifndef OPENSSL_NO_ENGINE
  			} else if (!strcmp(*args, "-engine")) {
  				if (args[1]) {
  					args++;
  					engine = *args;
  				} else
  					badarg = 1;
  #endif
  			} 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");
  #ifndef OPENSSL_NO_ENGINE
  		BIO_printf(bio_err, "-engine e     use engine e, possibly a hardware device.\n");
  #endif
  		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;
  	}
  #ifndef OPENSSL_NO_ENGINE
  	e = setup_engine(bio_err, engine, 0);
  #endif
  
  	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;
  	}
  
  	ERR_load_crypto_strings();
  
  
  	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, e, "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, e,
  			    "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, e,
  				    "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 (M_PKCS12_bag_type(bag)) {
  	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 (M_PKCS12_cert_bag_type(bag) != 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
  