/* apps/x509.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 <assert.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#ifdef OPENSSL_NO_STDIO

#define APPS_WIN16

#endif

#include "apps.h"

#include <openssl/bio.h>

#include <openssl/asn1.h>

#include <openssl/err.h>

#include <openssl/bn.h>

#include <openssl/evp.h>

#include <openssl/x509.h>

#include <openssl/x509v3.h>

#include <openssl/objects.h>

#include <openssl/pem.h>

#ifndef OPENSSL_NO_RSA

#include <openssl/rsa.h>

#endif

#ifndef OPENSSL_NO_DSA

#include <openssl/dsa.h>

#endif

#undef PROG

#define PROG x509_main

#undef POSTFIX

#define	POSTFIX	".srl"

#define DEF_DAYS	30

static const char *x509_usage[]={

"usage: x509 args\n",

" -inform arg     - input format - default PEM (one of DER, NET or PEM)\n",

" -outform arg    - output format - default PEM (one of DER, NET or PEM)\n",

" -keyform arg    - private key format - default PEM\n",

" -CAform arg     - CA format - default PEM\n",

" -CAkeyform arg  - CA key format - default PEM\n",

" -in arg         - input file - default stdin\n",

" -out arg        - output file - default stdout\n",

" -passin arg     - private key password source\n",

" -serial         - print serial number value\n",

" -subject_hash   - print subject hash value\n",

" -issuer_hash    - print issuer hash value\n",

" -hash           - synonym for -subject_hash\n",

" -subject        - print subject DN\n",

" -issuer         - print issuer DN\n",

" -email          - print email address(es)\n",

" -startdate      - notBefore field\n",

" -enddate        - notAfter field\n",

" -purpose        - print out certificate purposes\n",

" -dates          - both Before and After dates\n",

" -modulus        - print the RSA key modulus\n",

" -pubkey         - output the public key\n",

" -fingerprint    - print the certificate fingerprint\n",

" -alias          - output certificate alias\n",

" -noout          - no certificate output\n",

" -ocspid         - print OCSP hash values for the subject name and public key\n",

" -trustout       - output a \"trusted\" certificate\n",

" -clrtrust       - clear all trusted purposes\n",

" -clrreject      - clear all rejected purposes\n",

" -addtrust arg   - trust certificate for a given purpose\n",

" -addreject arg  - reject certificate for a given purpose\n",

" -setalias arg   - set certificate alias\n",

" -days arg       - How long till expiry of a signed certificate - def 30 days\n",

" -checkend arg   - check whether the cert expires in the next arg seconds\n",

"                   exit 1 if so, 0 if not\n",

" -signkey arg    - self sign cert with arg\n",

" -x509toreq      - output a certification request object\n",

" -req            - input is a certificate request, sign and output.\n",

" -CA arg         - set the CA certificate, must be PEM format.\n",

" -CAkey arg      - set the CA key, must be PEM format\n",

"                   missing, it is assumed to be in the CA file.\n",

" -CAcreateserial - create serial number file if it does not exist\n",

" -CAserial arg   - serial file\n",

" -set_serial     - serial number to use\n",

" -text           - print the certificate in text form\n",

" -C              - print out C code forms\n",

" -md2/-md5/-sha1/-mdc2 - digest to use\n",

" -extfile        - configuration file with X509V3 extensions to add\n",

" -extensions     - section from config file with X509V3 extensions to add\n",

" -clrext         - delete extensions before signing and input certificate\n",

" -nameopt arg    - various certificate name options\n",

#ifndef OPENSSL_NO_ENGINE

" -engine e       - use engine e, possibly a hardware device.\n",

#endif

" -certopt arg    - various certificate text options\n",

NULL

};

static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx);

static int sign (X509 *x, EVP_PKEY *pkey,int days,int clrext, const EVP_MD *digest,

						CONF *conf, char *section);

static int x509_certify (X509_STORE *ctx,char *CAfile,const EVP_MD *digest,

			 X509 *x,X509 *xca,EVP_PKEY *pkey,char *serial,

			 int create,int days, int clrext, CONF *conf, char *section,

						ASN1_INTEGER *sno);

static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);

static int reqfile=0;

int MAIN(int, char **);

int MAIN(int argc, char **argv)

	{

	ENGINE *e = NULL;

	int ret=1;

	X509_REQ *req=NULL;

	X509 *x=NULL,*xca=NULL;

	ASN1_OBJECT *objtmp;

	EVP_PKEY *Upkey=NULL,*CApkey=NULL;

	ASN1_INTEGER *sno = NULL;

	int i,num,badops=0;

	BIO *out=NULL;

	BIO *STDout=NULL;

	STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;

	int informat,outformat,keyformat,CAformat,CAkeyformat;

	char *infile=NULL,*outfile=NULL,*keyfile=NULL,*CAfile=NULL;

	char *CAkeyfile=NULL,*CAserial=NULL;

	char *alias=NULL;

	int text=0,serial=0,subject=0,issuer=0,startdate=0,enddate=0;

	int next_serial=0;

	int subject_hash=0,issuer_hash=0,ocspid=0;

	int noout=0,sign_flag=0,CA_flag=0,CA_createserial=0,email=0;

	int trustout=0,clrtrust=0,clrreject=0,aliasout=0,clrext=0;

	int C=0;

	int x509req=0,days=DEF_DAYS,modulus=0,pubkey=0;

	int pprint = 0;

	const char **pp;

	X509_STORE *ctx=NULL;

	X509_REQ *rq=NULL;

	int fingerprint=0;

	char buf[256];

	const EVP_MD *md_alg,*digest=EVP_sha1();

	CONF *extconf = NULL;

	char *extsect = NULL, *extfile = NULL, *passin = NULL, *passargin = NULL;

	int need_rand = 0;

	int checkend=0,checkoffset=0;

	unsigned long nmflag = 0, certflag = 0;

#ifndef OPENSSL_NO_ENGINE

	char *engine=NULL;

#endif

	reqfile=0;

	apps_startup();

	if (bio_err == NULL)

		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

	if (!load_config(bio_err, NULL))

		goto end;

	STDout=BIO_new_fp(stdout,BIO_NOCLOSE);

#ifdef OPENSSL_SYS_VMS

	{

	BIO *tmpbio = BIO_new(BIO_f_linebuffer());

	STDout = BIO_push(tmpbio, STDout);

	}

#endif

	informat=FORMAT_PEM;

	outformat=FORMAT_PEM;

	keyformat=FORMAT_PEM;

	CAformat=FORMAT_PEM;

	CAkeyformat=FORMAT_PEM;

	ctx=X509_STORE_new();

	if (ctx == NULL) goto end;

	X509_STORE_set_verify_cb_func(ctx,callb);

	argc--;

	argv++;

	num=0;

	while (argc >= 1)

		{

		if 	(strcmp(*argv,"-inform") == 0)

			{

			if (--argc < 1) goto bad;

			informat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-outform") == 0)

			{

			if (--argc < 1) goto bad;

			outformat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-keyform") == 0)

			{

			if (--argc < 1) goto bad;

			keyformat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-req") == 0)

			{

			reqfile=1;

			need_rand = 1;

			}

		else if (strcmp(*argv,"-CAform") == 0)

			{

			if (--argc < 1) goto bad;

			CAformat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-CAkeyform") == 0)

			{

			if (--argc < 1) goto bad;

			CAkeyformat=str2fmt(*(++argv));

			}

		else if (strcmp(*argv,"-days") == 0)

			{

			if (--argc < 1) goto bad;

			days=atoi(*(++argv));

			if (days == 0)

				{

				BIO_printf(STDout,"bad number of days\n");

				goto bad;

				}

			}

		else if (strcmp(*argv,"-passin") == 0)

			{

			if (--argc < 1) goto bad;

			passargin= *(++argv);

			}

		else if (strcmp(*argv,"-extfile") == 0)

			{

			if (--argc < 1) goto bad;

			extfile= *(++argv);

			}

		else if (strcmp(*argv,"-extensions") == 0)

			{

			if (--argc < 1) goto bad;

			extsect= *(++argv);

			}

		else if (strcmp(*argv,"-in") == 0)

			{

			if (--argc < 1) goto bad;

			infile= *(++argv);

			}

		else if (strcmp(*argv,"-out") == 0)

			{

			if (--argc < 1) goto bad;

			outfile= *(++argv);

			}

		else if (strcmp(*argv,"-signkey") == 0)

			{

			if (--argc < 1) goto bad;

			keyfile= *(++argv);

			sign_flag= ++num;

			need_rand = 1;

			}

		else if (strcmp(*argv,"-CA") == 0)

			{

			if (--argc < 1) goto bad;

			CAfile= *(++argv);

			CA_flag= ++num;

			need_rand = 1;

			}

		else if (strcmp(*argv,"-CAkey") == 0)

			{

			if (--argc < 1) goto bad;

			CAkeyfile= *(++argv);

			}

		else if (strcmp(*argv,"-CAserial") == 0)

			{

			if (--argc < 1) goto bad;

			CAserial= *(++argv);

			}

		else if (strcmp(*argv,"-set_serial") == 0)

			{

			if (--argc < 1) goto bad;

			if (!(sno = s2i_ASN1_INTEGER(NULL, *(++argv))))

				goto bad;

			}

		else if (strcmp(*argv,"-addtrust") == 0)

			{

			if (--argc < 1) goto bad;

			if (!(objtmp = OBJ_txt2obj(*(++argv), 0)))

				{

				BIO_printf(bio_err,

					"Invalid trust object value %s\n", *argv);

				goto bad;

				}

			if (!trust) trust = sk_ASN1_OBJECT_new_null();

			sk_ASN1_OBJECT_push(trust, objtmp);

			trustout = 1;

			}

		else if (strcmp(*argv,"-addreject") == 0)

			{

			if (--argc < 1) goto bad;

			if (!(objtmp = OBJ_txt2obj(*(++argv), 0)))

				{

				BIO_printf(bio_err,

					"Invalid reject object value %s\n", *argv);

				goto bad;

				}

			if (!reject) reject = sk_ASN1_OBJECT_new_null();

			sk_ASN1_OBJECT_push(reject, objtmp);

			trustout = 1;

			}

		else if (strcmp(*argv,"-setalias") == 0)

			{

			if (--argc < 1) goto bad;

			alias= *(++argv);

			trustout = 1;

			}

		else if (strcmp(*argv,"-certopt") == 0)

			{

			if (--argc < 1) goto bad;

			if (!set_cert_ex(&certflag, *(++argv))) goto bad;

			}

		else if (strcmp(*argv,"-nameopt") == 0)

			{

			if (--argc < 1) goto bad;

			if (!set_name_ex(&nmflag, *(++argv))) goto bad;

			}

#ifndef OPENSSL_NO_ENGINE

		else if (strcmp(*argv,"-engine") == 0)

			{

			if (--argc < 1) goto bad;

			engine= *(++argv);

			}

#endif

		else if (strcmp(*argv,"-C") == 0)

			C= ++num;

		else if (strcmp(*argv,"-email") == 0)

			email= ++num;

		else if (strcmp(*argv,"-serial") == 0)

			serial= ++num;

		else if (strcmp(*argv,"-next_serial") == 0)

			next_serial= ++num;

		else if (strcmp(*argv,"-modulus") == 0)

			modulus= ++num;

		else if (strcmp(*argv,"-pubkey") == 0)

			pubkey= ++num;

		else if (strcmp(*argv,"-x509toreq") == 0)

			x509req= ++num;

		else if (strcmp(*argv,"-text") == 0)

			text= ++num;

		else if (strcmp(*argv,"-hash") == 0

			|| strcmp(*argv,"-subject_hash") == 0)

			subject_hash= ++num;

		else if (strcmp(*argv,"-issuer_hash") == 0)

			issuer_hash= ++num;

		else if (strcmp(*argv,"-subject") == 0)

			subject= ++num;

		else if (strcmp(*argv,"-issuer") == 0)

			issuer= ++num;

		else if (strcmp(*argv,"-fingerprint") == 0)

			fingerprint= ++num;

		else if (strcmp(*argv,"-dates") == 0)

			{

			startdate= ++num;

			enddate= ++num;

			}

		else if (strcmp(*argv,"-purpose") == 0)

			pprint= ++num;

		else if (strcmp(*argv,"-startdate") == 0)

			startdate= ++num;

		else if (strcmp(*argv,"-enddate") == 0)

			enddate= ++num;

		else if (strcmp(*argv,"-checkend") == 0)

			{

			if (--argc < 1) goto bad;

			checkoffset=atoi(*(++argv));

			checkend=1;

			}

		else if (strcmp(*argv,"-noout") == 0)

			noout= ++num;

		else if (strcmp(*argv,"-trustout") == 0)

			trustout= 1;

		else if (strcmp(*argv,"-clrtrust") == 0)

			clrtrust= ++num;

		else if (strcmp(*argv,"-clrreject") == 0)

			clrreject= ++num;

		else if (strcmp(*argv,"-alias") == 0)

			aliasout= ++num;

		else if (strcmp(*argv,"-CAcreateserial") == 0)

			CA_createserial= ++num;

		else if (strcmp(*argv,"-clrext") == 0)

			clrext = 1;

#if 1 /* stay backwards-compatible with 0.9.5; this should go away soon */

		else if (strcmp(*argv,"-crlext") == 0)

			{

			BIO_printf(bio_err,"use -clrext instead of -crlext\n");

			clrext = 1;

			}

#endif

		else if (strcmp(*argv,"-ocspid") == 0)

			ocspid= ++num;

		else if ((md_alg=EVP_get_digestbyname(*argv + 1)))

			{

			/* ok */

			digest=md_alg;

			}

		else

			{

			BIO_printf(bio_err,"unknown option %s\n",*argv);

			badops=1;

			break;

			}

		argc--;

		argv++;

		}

	if (badops)

		{

bad:

		for (pp=x509_usage; (*pp != NULL); pp++)

			BIO_printf(bio_err,"%s",*pp);

		goto end;

		}

#ifndef OPENSSL_NO_ENGINE

        e = setup_engine(bio_err, engine, 0);

#endif

	if (need_rand)

		app_RAND_load_file(NULL, bio_err, 0);

	ERR_load_crypto_strings();

	if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))

		{

		BIO_printf(bio_err, "Error getting password\n");

		goto end;

		}

	if (!X509_STORE_set_default_paths(ctx))

		{

		ERR_print_errors(bio_err);

		goto end;

		}

	if ((CAkeyfile == NULL) && (CA_flag) && (CAformat == FORMAT_PEM))

		{ CAkeyfile=CAfile; }

	else if ((CA_flag) && (CAkeyfile == NULL))

		{

		BIO_printf(bio_err,"need to specify a CAkey if using the CA command\n");

		goto end;

		}

	if (extfile)

		{

		long errorline = -1;

		X509V3_CTX ctx2;

		extconf = NCONF_new(NULL);

		if (!NCONF_load(extconf, extfile,&errorline))

			{

			if (errorline <= 0)

				BIO_printf(bio_err,

					"error loading the config file '%s'\n",

								extfile);

                	else

                        	BIO_printf(bio_err,

				       "error on line %ld of config file '%s'\n"

							,errorline,extfile);

			goto end;

			}

		if (!extsect)

			{

			extsect = NCONF_get_string(extconf, "default", "extensions");

			if (!extsect)

				{

				ERR_clear_error();

				extsect = "default";

				}

			}

		X509V3_set_ctx_test(&ctx2);

		X509V3_set_nconf(&ctx2, extconf);

		if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL))

			{

			BIO_printf(bio_err,

				"Error Loading extension section %s\n",

								 extsect);