apps.c

/* apps/apps.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
/* ====================================================================
 * Copyright (c) 1998-2001 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
 *    openssl-core@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).
 *
 */

#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
#define _POSIX_C_SOURCE 2	/* On VMS, you need to define this to get
				   the declaration of fileno().  The value
				   2 is to make sure no function defined
				   in POSIX-2 is left undefined. */
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if !defined(OPENSSL_SYSNAME_WIN32) && !defined(NETWARE_CLIB)
#include <strings.h>
#endif
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>
#include <openssl/pkcs12.h>
#include <openssl/ui.h>
#include <openssl/safestack.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#include <openssl/bn.h>
#ifndef OPENSSL_NO_JPAKE
#include <openssl/jpake.h>
#endif

#define NON_MAIN
#include "apps.h"
#undef NON_MAIN

#ifdef _WIN32
static int WIN32_rename(const char *from, const char *to);
#define rename(from,to) WIN32_rename((from),(to))
#endif

typedef struct {
	const char *name;
	unsigned long flag;
	unsigned long mask;
} NAME_EX_TBL;

static UI_METHOD *ui_method = NULL;

static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);
static int set_multi_opts(unsigned long *flags, const char *arg, const NAME_EX_TBL *in_tbl);

#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
/* Looks like this stuff is worth moving into separate function */
static EVP_PKEY *
load_netscape_key(BIO *err, BIO *key, const char *file,
		const char *key_descrip, int format);
#endif

int app_init(long mesgwin);
#ifdef undef /* never finished - probably never will be :-) */
int args_from_file(char *file, int *argc, char **argv[])
	{
	FILE *fp;
	int num,i;
	unsigned int len;
	static char *buf=NULL;
	static char **arg=NULL;
	char *p;

	fp=fopen(file,"r");
	if (fp == NULL)
		return(0);

	if (fseek(fp,0,SEEK_END)==0)
		len=ftell(fp), rewind(fp);
	else	len=-1;
	if (len<=0)
		{
		fclose(fp);
		return(0);
		}

	*argc=0;
	*argv=NULL;

	if (buf != NULL) OPENSSL_free(buf);
	buf=(char *)OPENSSL_malloc(len+1);
	if (buf == NULL) return(0);

	len=fread(buf,1,len,fp);
	if (len <= 1) return(0);
	buf[len]='\0';

	i=0;
	for (p=buf; *p; p++)
		if (*p == '\n') i++;
	if (arg != NULL) OPENSSL_free(arg);
	arg=(char **)OPENSSL_malloc(sizeof(char *)*(i*2));

	*argv=arg;
	num=0;
	p=buf;
	for (;;)
		{
		if (!*p) break;
		if (*p == '#') /* comment line */
			{
			while (*p && (*p != '\n')) p++;
			continue;
			}
		/* else we have a line */
		*(arg++)=p;
		num++;
		while (*p && ((*p != ' ') && (*p != '\t') && (*p != '\n')))
			p++;
		if (!*p) break;
		if (*p == '\n')
			{
			*(p++)='\0';
			continue;
			}
		/* else it is a tab or space */
		p++;
		while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
			p++;
		if (!*p) break;
		if (*p == '\n')
			{
			p++;
			continue;
			}
		*(arg++)=p++;
		num++;
		while (*p && (*p != '\n')) p++;
		if (!*p) break;
		/* else *p == '\n' */
		*(p++)='\0';
		}
	*argc=num;
	return(1);
	}
#endif

int str2fmt(char *s)
	{
	if (s == NULL)
		return FORMAT_UNDEF;
	if 	((*s == 'D') || (*s == 'd'))
		return(FORMAT_ASN1);
	else if ((*s == 'T') || (*s == 't'))
		return(FORMAT_TEXT);
  	else if ((*s == 'N') || (*s == 'n'))
  		return(FORMAT_NETSCAPE);
  	else if ((*s == 'S') || (*s == 's'))
  		return(FORMAT_SMIME);
 	else if ((*s == 'M') || (*s == 'm'))
 		return(FORMAT_MSBLOB);
	else if ((*s == '1')
		|| (strcmp(s,"PKCS12") == 0) || (strcmp(s,"pkcs12") == 0)
		|| (strcmp(s,"P12") == 0) || (strcmp(s,"p12") == 0))
		return(FORMAT_PKCS12);
	else if ((*s == 'E') || (*s == 'e'))
		return(FORMAT_ENGINE);
	else if ((*s == 'P') || (*s == 'p'))
 		{
 		if (s[1] == 'V' || s[1] == 'v')
 			return FORMAT_PVK;
 		else
  			return(FORMAT_PEM);
 		}
	else
		return(FORMAT_UNDEF);
	}

#if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16) || defined(OPENSSL_SYS_NETWARE)
void program_name(char *in, char *out, int size)
	{
	int i,n;
	char *p=NULL;

	n=strlen(in);
	/* find the last '/', '\' or ':' */
	for (i=n-1; i>0; i--)
		{
		if ((in[i] == '/') || (in[i] == '\\') || (in[i] == ':'))
			{
			p= &(in[i+1]);
			break;
			}
		}
	if (p == NULL)
		p=in;
	n=strlen(p);

#if defined(OPENSSL_SYS_NETWARE)
   /* strip off trailing .nlm if present. */
   if ((n > 4) && (p[n-4] == '.') &&
      ((p[n-3] == 'n') || (p[n-3] == 'N')) &&
      ((p[n-2] == 'l') || (p[n-2] == 'L')) &&
      ((p[n-1] == 'm') || (p[n-1] == 'M')))
      n-=4;
#else
	/* strip off trailing .exe if present. */
	if ((n > 4) && (p[n-4] == '.') &&
		((p[n-3] == 'e') || (p[n-3] == 'E')) &&
		((p[n-2] == 'x') || (p[n-2] == 'X')) &&
		((p[n-1] == 'e') || (p[n-1] == 'E')))
		n-=4;
#endif

	if (n > size-1)
		n=size-1;

	for (i=0; i<n; i++)
		{
		if ((p[i] >= 'A') && (p[i] <= 'Z'))
			out[i]=p[i]-'A'+'a';
		else
			out[i]=p[i];
		}
	out[n]='\0';
	}
#else
#ifdef OPENSSL_SYS_VMS
void program_name(char *in, char *out, int size)
	{
	char *p=in, *q;
	char *chars=":]>";

	while(*chars != '\0')
		{
		q=strrchr(p,*chars);
		if (q > p)
			p = q + 1;
		chars++;
		}

	q=strrchr(p,'.');
	if (q == NULL)
		q = p + strlen(p);
	strncpy(out,p,size-1);
	if (q-p >= size)
		{
		out[size-1]='\0';
		}
	else
		{
		out[q-p]='\0';
		}
	}
#else
void program_name(char *in, char *out, int size)
	{
	char *p;

	p=strrchr(in,'/');
	if (p != NULL)
		p++;
	else
		p=in;
	BUF_strlcpy(out,p,size);
	}
#endif
#endif

int chopup_args(ARGS *arg, char *buf, int *argc, char **argv[])
	{
	int num,i;
	char *p;

	*argc=0;
	*argv=NULL;

	i=0;
	if (arg->count == 0)
		{
		arg->count=20;
		arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);
		if (arg->data == NULL)
			return 0;
		}
	for (i=0; i<arg->count; i++)
		arg->data[i]=NULL;

	num=0;
	p=buf;
	for (;;)
		{
		/* first scan over white space */
		if (!*p) break;
		while (*p && ((*p == ' ') || (*p == '\t') || (*p == '\n')))
			p++;
		if (!*p) break;

		/* The start of something good :-) */
		if (num >= arg->count)
			{
			char **tmp_p;
			int tlen = arg->count + 20;
			tmp_p = (char **)OPENSSL_realloc(arg->data,
				sizeof(char *)*tlen);
			if (tmp_p == NULL)
				return 0;
			arg->data  = tmp_p;
			arg->count = tlen;
			/* initialize newly allocated data */
			for (i = num; i < arg->count; i++)
				arg->data[i] = NULL;
			}
		arg->data[num++]=p;

		/* now look for the end of this */
		if ((*p == '\'') || (*p == '\"')) /* scan for closing quote */
			{
			i= *(p++);
			arg->data[num-1]++; /* jump over quote */
			while (*p && (*p != i))
				p++;
			*p='\0';
			}
		else
			{
			while (*p && ((*p != ' ') &&
				(*p != '\t') && (*p != '\n')))
				p++;

			if (*p == '\0')
				p--;
			else
				*p='\0';
			}
		p++;
		}
	*argc=num;
	*argv=arg->data;
	return(1);
	}

#ifndef APP_INIT
int app_init(long mesgwin)
	{
	return(1);
	}
#endif


int dump_cert_text (BIO *out, X509 *x)
{
	char *p;

	p=X509_NAME_oneline(X509_get_subject_name(x),NULL,0);
	BIO_puts(out,"subject=");
	BIO_puts(out,p);
	OPENSSL_free(p);

	p=X509_NAME_oneline(X509_get_issuer_name(x),NULL,0);
	BIO_puts(out,"\nissuer=");
	BIO_puts(out,p);
	BIO_puts(out,"\n");
	OPENSSL_free(p);

	return 0;
}

static int ui_open(UI *ui)
	{
	return UI_method_get_opener(UI_OpenSSL())(ui);
	}
static int ui_read(UI *ui, UI_STRING *uis)
	{
	if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
		&& UI_get0_user_data(ui))
		{
		switch(UI_get_string_type(uis))
			{
		case UIT_PROMPT:
		case UIT_VERIFY:
			{
			const char *password =
				((PW_CB_DATA *)UI_get0_user_data(ui))->password;
			if (password && password[0] != '\0')
				{
				UI_set_result(ui, uis, password);
				return 1;
				}
			}
		default:
			break;
			}
		}
	return UI_method_get_reader(UI_OpenSSL())(ui, uis);
	}
static int ui_write(UI *ui, UI_STRING *uis)
	{
	if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
		&& UI_get0_user_data(ui))
		{
		switch(UI_get_string_type(uis))
			{
		case UIT_PROMPT:
		case UIT_VERIFY:
			{
			const char *password =
				((PW_CB_DATA *)UI_get0_user_data(ui))->password;
			if (password && password[0] != '\0')
				return 1;
			}
		default:
			break;
			}
		}
	return UI_method_get_writer(UI_OpenSSL())(ui, uis);
	}
static int ui_close(UI *ui)
	{
	return UI_method_get_closer(UI_OpenSSL())(ui);
	}
int setup_ui_method(void)
	{
	ui_method = UI_create_method("OpenSSL application user interface");
	UI_method_set_opener(ui_method, ui_open);
	UI_method_set_reader(ui_method, ui_read);
	UI_method_set_writer(ui_method, ui_write);
	UI_method_set_closer(ui_method, ui_close);
	return 0;
	}
void destroy_ui_method(void)
	{
	if(ui_method)
		{
		UI_destroy_method(ui_method);
		ui_method = NULL;
		}
	}
int password_callback(char *buf, int bufsiz, int verify,
	PW_CB_DATA *cb_tmp)
	{
	UI *ui = NULL;
	int res = 0;
	const char *prompt_info = NULL;
	const char *password = NULL;
	PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;

	if (cb_data)
		{
		if (cb_data->password)
			password = cb_data->password;
		if (cb_data->prompt_info)
			prompt_info = cb_data->prompt_info;
		}

	if (password)
		{
		res = strlen(password);
		if (res > bufsiz)
			res = bufsiz;
		memcpy(buf, password, res);
		return res;
		}

	ui = UI_new_method(ui_method);
	if (ui)
		{
		int ok = 0;
		char *buff = NULL;
		int ui_flags = 0;
		char *prompt = NULL;

		prompt = UI_construct_prompt(ui, "pass phrase",
			prompt_info);

		ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
		UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);

		if (ok >= 0)
			ok = UI_add_input_string(ui,prompt,ui_flags,buf,
				PW_MIN_LENGTH,bufsiz-1);
		if (ok >= 0 && verify)
			{
			buff = (char *)OPENSSL_malloc(bufsiz);
			ok = UI_add_verify_string(ui,prompt,ui_flags,buff,
				PW_MIN_LENGTH,bufsiz-1, buf);
			}
		if (ok >= 0)
			do
				{
				ok = UI_process(ui);
				}
			while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));

		if (buff)
			{
			OPENSSL_cleanse(buff,(unsigned int)bufsiz);
			OPENSSL_free(buff);
			}

		if (ok >= 0)
			res = strlen(buf);
		if (ok == -1)
			{
			BIO_printf(bio_err, "User interface error\n");
			ERR_print_errors(bio_err);
			OPENSSL_cleanse(buf,(unsigned int)bufsiz);
			res = 0;
			}
		if (ok == -2)
			{
			BIO_printf(bio_err,"aborted!\n");
			OPENSSL_cleanse(buf,(unsigned int)bufsiz);
			res = 0;
			}
		UI_free(ui);
		OPENSSL_free(prompt);
		}
	return res;
	}

static char *app_get_pass(BIO *err, char *arg, int keepbio);

int app_passwd(BIO *err, char *arg1, char *arg2, char **pass1, char **pass2)
{
	int same;
	if(!arg2 || !arg1 || strcmp(arg1, arg2)) same = 0;
	else same = 1;
	if(arg1) {
		*pass1 = app_get_pass(err, arg1, same);
		if(!*pass1) return 0;
	} else if(pass1) *pass1 = NULL;
	if(arg2) {
		*pass2 = app_get_pass(err, arg2, same ? 2 : 0);
		if(!*pass2) return 0;
	} else if(pass2) *pass2 = NULL;
	return 1;
}

static char *app_get_pass(BIO *err, char *arg, int keepbio)
{
	char *tmp, tpass[APP_PASS_LEN];
	static BIO *pwdbio = NULL;
	int i;
	if(!strncmp(arg, "pass:", 5)) return BUF_strdup(arg + 5);
	if(!strncmp(arg, "env:", 4)) {
		tmp = getenv(arg + 4);
		if(!tmp) {
			BIO_printf(err, "Can't read environment variable %s\n", arg + 4);
			return NULL;
		}
		return BUF_strdup(tmp);
	}
	if(!keepbio || !pwdbio) {
		if(!strncmp(arg, "file:", 5)) {
			pwdbio = BIO_new_file(arg + 5, "r");
			if(!pwdbio) {
				BIO_printf(err, "Can't open file %s\n", arg + 5);
				return NULL;
			}
#if !defined(_WIN32)
		/*
		 * Under _WIN32, which covers even Win64 and CE, file
		 * descriptors referenced by BIO_s_fd are not inherited
		 * by child process and therefore below is not an option.
		 * It could have been an option if bss_fd.c was operating
		 * on real Windows descriptors, such as those obtained
		 * with CreateFile.
		 */
		} else if(!strncmp(arg, "fd:", 3)) {
			BIO *btmp;
			i = atoi(arg + 3);
			if(i >= 0) pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
			if((i < 0) || !pwdbio) {
				BIO_printf(err, "Can't access file descriptor %s\n", arg + 3);
				return NULL;
			}
			/* Can't do BIO_gets on an fd BIO so add a buffering BIO */
			btmp = BIO_new(BIO_f_buffer());
			pwdbio = BIO_push(btmp, pwdbio);
#endif
		} else if(!strcmp(arg, "stdin")) {
			pwdbio = BIO_new_fp(stdin, BIO_NOCLOSE);
			if(!pwdbio) {
				BIO_printf(err, "Can't open BIO for stdin\n");
				return NULL;
			}
		} else {
			BIO_printf(err, "Invalid password argument \"%s\"\n", arg);
			return NULL;
		}
	}
	i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
	if(keepbio != 1) {
		BIO_free_all(pwdbio);
		pwdbio = NULL;
	}
	if(i <= 0) {
		BIO_printf(err, "Error reading password from BIO\n");
		return NULL;
	}
	tmp = strchr(tpass, '\n');
	if(tmp) *tmp = 0;
	return BUF_strdup(tpass);
}

int add_oid_section(BIO *err, CONF *conf)
{	
	char *p;
	STACK_OF(CONF_VALUE) *sktmp;
	CONF_VALUE *cnf;
	int i;
	if(!(p=NCONF_get_string(conf,NULL,"oid_section")))
		{
		ERR_clear_error();
		return 1;
		}
	if(!(sktmp = NCONF_get_section(conf, p))) {
		BIO_printf(err, "problem loading oid section %s\n", p);
		return 0;
	}
	for(i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
		cnf = sk_CONF_VALUE_value(sktmp, i);
		if(OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
			BIO_printf(err, "problem creating object %s=%s\n",
							 cnf->name, cnf->value);
			return 0;
		}
	}
	return 1;
}

static int load_pkcs12(BIO *err, BIO *in, const char *desc,
		pem_password_cb *pem_cb,  void *cb_data,
		EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
	{
 	const char *pass;
	char tpass[PEM_BUFSIZE];
	int len, ret = 0;
	PKCS12 *p12;
	p12 = d2i_PKCS12_bio(in, NULL);
	if (p12 == NULL)
		{
		BIO_printf(err, "Error loading PKCS12 file for %s\n", desc);	
		goto die;
		}
	/* See if an empty password will do */
	if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0))
		pass = "";
	else
		{
		if (!pem_cb)
			pem_cb = (pem_password_cb *)password_callback;
		len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
		if (len < 0) 
			{
			BIO_printf(err, "Passpharse callback error for %s\n",
					desc);
			goto die;
			}
		if (len < PEM_BUFSIZE)
			tpass[len] = 0;
		if (!PKCS12_verify_mac(p12, tpass, len))
			{
			BIO_printf(err,
	"Mac verify error (wrong password?) in PKCS12 file for %s\n", desc);	
			goto die;
			}
		pass = tpass;
		}
	ret = PKCS12_parse(p12, pass, pkey, cert, ca);
	die:
	if (p12)
		PKCS12_free(p12);
	return ret;
	}

X509 *load_cert(BIO *err, const char *file, int format,
	const char *pass, ENGINE *e, const char *cert_descrip)
	{
	X509 *x=NULL;
	BIO *cert;

	if ((cert=BIO_new(BIO_s_file())) == NULL)
		{
		ERR_print_errors(err);
		goto end;
		}

	if (file == NULL)
		{
#ifdef _IONBF
# ifndef OPENSSL_NO_SETVBUF_IONBF
		setvbuf(stdin, NULL, _IONBF, 0);
# endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
#endif
		BIO_set_fp(cert,stdin,BIO_NOCLOSE);
		}
	else
		{
		if (BIO_read_filename(cert,file) <= 0)
			{
			BIO_printf(err, "Error opening %s %s\n",
				cert_descrip, file);
			ERR_print_errors(err);
			goto end;
			}
		}

	if 	(format == FORMAT_ASN1)
		x=d2i_X509_bio(cert,NULL);
	else if (format == FORMAT_NETSCAPE)
		{
		NETSCAPE_X509 *nx;
		nx=ASN1_item_d2i_bio(ASN1_ITEM_rptr(NETSCAPE_X509),cert,NULL);
		if (nx == NULL)
				goto end;

		if ((strncmp(NETSCAPE_CERT_HDR,(char *)nx->header->data,
			nx->header->length) != 0))
			{
			NETSCAPE_X509_free(nx);
			BIO_printf(err,"Error reading header on certificate\n");
			goto end;
			}
		x=nx->cert;
		nx->cert = NULL;
		NETSCAPE_X509_free(nx);
		}
	else if (format == FORMAT_PEM)
		x=PEM_read_bio_X509_AUX(cert,NULL,
			(pem_password_cb *)password_callback, NULL);
	else if (format == FORMAT_PKCS12)
		{
		if (!load_pkcs12(err, cert,cert_descrip, NULL, NULL,
					NULL, &x, NULL))
			goto end;
		}
	else	{
		BIO_printf(err,"bad input format specified for %s\n",
			cert_descrip);
		goto end;
		}
end:
	if (x == NULL)
		{
		BIO_printf(err,"unable to load certificate\n");
		ERR_print_errors(err);
		}
	if (cert != NULL) BIO_free(cert);
	return(x);
	}

EVP_PKEY *load_key(BIO *err, const char *file, int format, int maybe_stdin,
	const char *pass, ENGINE *e, const char *key_descrip)
	{
	BIO *key=NULL;
	EVP_PKEY *pkey=NULL;
	PW_CB_DATA cb_data;

	cb_data.password = pass;
	cb_data.prompt_info = file;

	if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE))
		{
		BIO_printf(err,"no keyfile specified\n");
		goto end;
		}
#ifndef OPENSSL_NO_ENGINE
	if (format == FORMAT_ENGINE)
		{
		if (!e)
			BIO_printf(err,"no engine specified\n");
		else
			{
			pkey = ENGINE_load_private_key(e, file,
				ui_method, &cb_data);
			if (!pkey) 
				{
				BIO_printf(err,"cannot load %s from engine\n",key_descrip);
				ERR_print_errors(err);
				}	
			}
		goto end;
		}
#endif
	key=BIO_new(BIO_s_file());
	if (key == NULL)
		{
		ERR_print_errors(err);
		goto end;
		}
	if (file == NULL && maybe_stdin)
		{
#ifdef _IONBF
# ifndef OPENSSL_NO_SETVBUF_IONBF
		setvbuf(stdin, NULL, _IONBF, 0);
# endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
#endif
		BIO_set_fp(key,stdin,BIO_NOCLOSE);
		}
	else
		if (BIO_read_filename(key,file) <= 0)
			{
			BIO_printf(err, "Error opening %s %s\n",
				key_descrip, file);
			ERR_print_errors(err);
			goto end;
			}
	if (format == FORMAT_ASN1)
		{
		pkey=d2i_PrivateKey_bio(key, NULL);
		}
	else if (format == FORMAT_PEM)
		{
		pkey=PEM_read_bio_PrivateKey(key,NULL,
			(pem_password_cb *)password_callback, &cb_data);
		}
#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_RSA)
	else if (format == FORMAT_NETSCAPE || format == FORMAT_IISSGC)
		pkey = load_netscape_key(err, key, file, key_descrip, format);
#endif
	else if (format == FORMAT_PKCS12)
		{
		if (!load_pkcs12(err, key, key_descrip,
				(pem_password_cb *)password_callback, &cb_data,
				&pkey, NULL, NULL))
			goto end;
		}
#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
	else if (format == FORMAT_MSBLOB)
		pkey = b2i_PrivateKey_bio(key);
	else if (format == FORMAT_PVK)
		pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
								&cb_data);
#endif
	else
		{
		BIO_printf(err,"bad input format specified for key file\n");
		goto end;
		}
 end:
	if (key != NULL) BIO_free(key);
	if (pkey == NULL) 
		{
		BIO_printf(err,"unable to load %s\n", key_descrip);
		ERR_print_errors(err);
		}	
	return(pkey);
	}

EVP_PKEY *load_pubkey(BIO *err, const char *file, int format, int maybe_stdin,
	const char *pass, ENGINE *e, const char *key_descrip)
	{
	BIO *key=NULL;
	EVP_PKEY *pkey=NULL;
	PW_CB_DATA cb_data;

	cb_data.password = pass;
	cb_data.prompt_info = file;

	if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE))
		{
		BIO_printf(err,"no keyfile specified\n");
		goto end;
		}
#ifndef OPENSSL_NO_ENGINE
	if (format == FORMAT_ENGINE)
		{
		if (!e)
			BIO_printf(bio_err,"no engine specified\n");
		else
			pkey = ENGINE_load_public_key(e, file,
				ui_method, &cb_data);
		goto end;
		}
#endif
	key=BIO_new(BIO_s_file());
	if (key == NULL)
		{
		ERR_print_errors(err);
		goto end;
		}
	if (file == NULL && maybe_stdin)
		{
#ifdef _IONBF
# ifndef OPENSSL_NO_SETVBUF_IONBF
		setvbuf(stdin, NULL, _IONBF, 0);
# endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
#endif