/* crypto/x509/by_file.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.]
 */

#include <stdio.h>
#include <time.h>
#include <errno.h>

#include "cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/buffer.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

#ifndef NO_STDIO

static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
	long argl, char **ret);
X509_LOOKUP_METHOD x509_file_lookup=
	{
	"Load file into cache",
	NULL,		/* new */
	NULL,		/* free */
	NULL, 		/* init */
	NULL,		/* shutdown */
	by_file_ctrl,	/* ctrl */
	NULL,		/* get_by_subject */
	NULL,		/* get_by_issuer_serial */
	NULL,		/* get_by_fingerprint */
	NULL,		/* get_by_alias */
	};

X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
	{
	return(&x509_file_lookup);
	}

static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
	     char **ret)
	{
	int ok=0,ok2=0;
	char *file;

	switch (cmd)
		{
	case X509_L_FILE_LOAD:
		if (argl == X509_FILETYPE_DEFAULT)
			{
			ok=X509_load_cert_file(ctx,X509_get_default_cert_file(),
				X509_FILETYPE_PEM);
			ok2=X509_load_crl_file(ctx,X509_get_default_cert_file(),
				X509_FILETYPE_PEM);
			if (!ok || !ok2)
				{
				X509err(X509_F_BY_FILE_CTRL,X509_R_LOADING_DEFAULTS);
				}
			else
				{
				file=(char *)Getenv(X509_get_default_cert_file_env());
				ok=X509_load_cert_file(ctx,file,
					X509_FILETYPE_PEM);
				ok2=X509_load_crl_file(ctx,file,
					X509_FILETYPE_PEM);
				}
			}
		else
			{
			ok=X509_load_cert_file(ctx,argp,(int)argl);
			ok2=X509_load_crl_file(ctx,argp,(int)argl);
			}
		break;
		}
	return((ok && ok2)?ok:0);
	}

int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
	{
	int ret=0;
	BIO *in=NULL;
	int i,count=0;
	X509 *x=NULL;

	if (file == NULL) return(1);
	in=BIO_new(BIO_s_file_internal());

	if ((in == NULL) || (BIO_read_filename(in,file) <= 0))
		{
		X509err(X509_F_X509_LOAD_CERT_FILE,ERR_R_SYS_LIB);
		goto err;
		}

	if (type == X509_FILETYPE_PEM)
		{
		for (;;)
			{
			x=PEM_read_bio_X509_AUX(in,NULL,NULL,NULL);
			if (x == NULL)
				{
				if ((ERR_GET_REASON(ERR_peek_error()) ==
					PEM_R_NO_START_LINE) && (count > 0))
					{
					ERR_clear_error();
					break;
					}
				else
					{
					X509err(X509_F_X509_LOAD_CERT_FILE,
						ERR_R_PEM_LIB);
					goto err;
					}
				}
			i=X509_STORE_add_cert(ctx->store_ctx,x);
			if (!i) goto err;
			count++;
			X509_free(x);
			x=NULL;
			}
		ret=count;
		}
	else if (type == X509_FILETYPE_ASN1)
		{
		x=d2i_X509_bio(in,NULL);
		if (x == NULL)
			{
			X509err(X509_F_X509_LOAD_CERT_FILE,ERR_R_ASN1_LIB);
			goto err;
			}
		i=X509_STORE_add_cert(ctx->store_ctx,x);
		if (!i) goto err;
		ret=i;
		}
	else
		{
		X509err(X509_F_X509_LOAD_CERT_FILE,X509_R_BAD_X509_FILETYPE);
		goto err;
		}
err:
	if (x != NULL) X509_free(x);
	if (in != NULL) BIO_free(in);
	return(ret);
	}

int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
	{
	int ret=0;
	BIO *in=NULL;
	int i,count=0;
	X509_CRL *x=NULL;

	if (file == NULL) return(1);
	in=BIO_new(BIO_s_file_internal());

	if ((in == NULL) || (BIO_read_filename(in,file) <= 0))
		{
		X509err(X509_F_X509_LOAD_CRL_FILE,ERR_R_SYS_LIB);
		goto err;
		}

	if (type == X509_FILETYPE_PEM)
		{
		for (;;)
			{
			x=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL);
			if (x == NULL)
				{
				if ((ERR_GET_REASON(ERR_peek_error()) ==
					PEM_R_NO_START_LINE) && (count > 0))
					{
					ERR_clear_error();
					break;
					}
				else
					{
					X509err(X509_F_X509_LOAD_CRL_FILE,
						ERR_R_PEM_LIB);
					goto err;
					}
				}
			i=X509_STORE_add_crl(ctx->store_ctx,x);
			if (!i) goto err;
			count++;
			X509_CRL_free(x);
			x=NULL;
			}
		ret=count;
		}
	else if (type == X509_FILETYPE_ASN1)
		{
		x=d2i_X509_CRL_bio(in,NULL);
		if (x == NULL)
			{
			X509err(X509_F_X509_LOAD_CRL_FILE,ERR_R_ASN1_LIB);
			goto err;
			}
		i=X509_STORE_add_crl(ctx->store_ctx,x);
		if (!i) goto err;
		ret=i;
		}
	else
		{
		X509err(X509_F_X509_LOAD_CRL_FILE,X509_R_BAD_X509_FILETYPE);
		goto err;
		}
err:
	if (x != NULL) X509_CRL_free(x);
	if (in != NULL) BIO_free(in);
	return(ret);
	}

#endif /* NO_STDIO */