/* 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).

 *

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <ctype.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>

#define NON_MAIN

#include "apps.h"

#undef NON_MAIN

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;

	struct stat stbuf;

	if (stat(file,&stbuf) < 0) return(0);

	fp=fopen(file,"r");

	if (fp == NULL)

		return(0);

	*argc=0;

	*argv=NULL;

	len=(unsigned int)stbuf.st_size;

	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 == 'D') || (*s == 'd'))

		return(FORMAT_ASN1);

	else if ((*s == 'T') || (*s == 't'))

		return(FORMAT_TEXT);

	else if ((*s == 'P') || (*s == 'p'))

		return(FORMAT_PEM);

	else if ((*s == 'N') || (*s == 'n'))

		return(FORMAT_NETSCAPE);

	else if ((*s == 'S') || (*s == 's'))

		return(FORMAT_SMIME);

	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

		return(FORMAT_UNDEF);

	}

#if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16) || defined(OPENSSL_SYS_NETWARE)

svoid 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

svoid 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,len,i;

	char *p;

	*argc=0;

	*argv=NULL;

	len=strlen(buf);

	i=0;

	if (arg->count == 0)

		{

		arg->count=20;

		arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);

		}

	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;