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x509.c

/* 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);
                  ERR_print_errors(bio_err);
                  goto end;
                  }
            }


      if (reqfile)
            {
            EVP_PKEY *pkey;
            X509_CINF *ci;
            BIO *in;

            if (!sign_flag && !CA_flag)
                  {
                  BIO_printf(bio_err,"We need a private key to sign with\n");
                  goto end;
                  }
            in=BIO_new(BIO_s_file());
            if (in == NULL)
                  {
                  ERR_print_errors(bio_err);
                  goto end;
                  }

            if (infile == NULL)
                  BIO_set_fp(in,stdin,BIO_NOCLOSE|BIO_FP_TEXT);
            else
                  {
                  if (BIO_read_filename(in,infile) <= 0)
                        {
                        perror(infile);
                        BIO_free(in);
                        goto end;
                        }
                  }
            req=PEM_read_bio_X509_REQ(in,NULL,NULL,NULL);
            BIO_free(in);

            if (req == NULL)
                  {
                  ERR_print_errors(bio_err);
                  goto end;
                  }

            if (  (req->req_info == NULL) ||
                  (req->req_info->pubkey == NULL) ||
                  (req->req_info->pubkey->public_key == NULL) ||
                  (req->req_info->pubkey->public_key->data == NULL))
                  {
                  BIO_printf(bio_err,"The certificate request appears to corrupted\n");
                  BIO_printf(bio_err,"It does not contain a public key\n");
                  goto end;
                  }
            if ((pkey=X509_REQ_get_pubkey(req)) == NULL)
                      {
                      BIO_printf(bio_err,"error unpacking public key\n");
                      goto end;
                      }
            i=X509_REQ_verify(req,pkey);
            EVP_PKEY_free(pkey);
            if (i < 0)
                  {
                  BIO_printf(bio_err,"Signature verification error\n");
                  ERR_print_errors(bio_err);
                  goto end;
                  }
              if (i == 0)
                  {
                  BIO_printf(bio_err,"Signature did not match the certificate request\n");
                  goto end;
                  }
            else
                  BIO_printf(bio_err,"Signature ok\n");

            print_name(bio_err, "subject=", X509_REQ_get_subject_name(req), nmflag);

            if ((x=X509_new()) == NULL) goto end;
            ci=x->cert_info;

            if (sno == NULL)
                  {
                  sno = ASN1_INTEGER_new();
                  if (!sno || !rand_serial(NULL, sno))
                        goto end;
                  if (!X509_set_serialNumber(x, sno)) 
                        goto end;
                  ASN1_INTEGER_free(sno);
                  sno = NULL;
                  }
            else if (!X509_set_serialNumber(x, sno)) 
                  goto end;

            if (!X509_set_issuer_name(x,req->req_info->subject)) goto end;
            if (!X509_set_subject_name(x,req->req_info->subject)) goto end;

            X509_gmtime_adj(X509_get_notBefore(x),0);
              X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days);

            pkey = X509_REQ_get_pubkey(req);
            X509_set_pubkey(x,pkey);
            EVP_PKEY_free(pkey);
            }
      else
            x=load_cert(bio_err,infile,informat,NULL,e,"Certificate");

      if (x == NULL) goto end;
      if (CA_flag)
            {
            xca=load_cert(bio_err,CAfile,CAformat,NULL,e,"CA Certificate");
            if (xca == NULL) goto end;
            }

      if (!noout || text || next_serial)
            {
            OBJ_create("2.99999.3",
                  "SET.ex3","SET x509v3 extension 3");

            out=BIO_new(BIO_s_file());
            if (out == NULL)
                  {
                  ERR_print_errors(bio_err);
                  goto end;
                  }
            if (outfile == NULL)
                  {
                  BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
                  {
                  BIO *tmpbio = BIO_new(BIO_f_linebuffer());
                  out = BIO_push(tmpbio, out);
                  }
#endif
                  }
            else
                  {
                  if (BIO_write_filename(out,outfile) <= 0)
                        {
                        perror(outfile);
                        goto end;
                        }
                  }
            }

      if (alias) X509_alias_set1(x, (unsigned char *)alias, -1);

      if (clrtrust) X509_trust_clear(x);
      if (clrreject) X509_reject_clear(x);

      if (trust)
            {
            for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++)
                  {
                  objtmp = sk_ASN1_OBJECT_value(trust, i);
                  X509_add1_trust_object(x, objtmp);
                  }
            }

      if (reject)
            {
            for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++)
                  {
                  objtmp = sk_ASN1_OBJECT_value(reject, i);
                  X509_add1_reject_object(x, objtmp);
                  }
            }

      if (num)
            {
            for (i=1; i<=num; i++)
                  {
                  if (issuer == i)
                        {
                        print_name(STDout, "issuer= ",
                              X509_get_issuer_name(x), nmflag);
                        }
                  else if (subject == i) 
                        {
                        print_name(STDout, "subject= ",
                              X509_get_subject_name(x), nmflag);
                        }
                  else if (serial == i)
                        {
                        BIO_printf(STDout,"serial=");
                        i2a_ASN1_INTEGER(STDout,
                              X509_get_serialNumber(x));
                        BIO_printf(STDout,"\n");
                        }
                  else if (next_serial == i)
                        {
                        BIGNUM *bnser;
                        ASN1_INTEGER *ser;
                        ser = X509_get_serialNumber(x);
                        bnser = ASN1_INTEGER_to_BN(ser, NULL);
                        if (!bnser)
                              goto end;
                        if (!BN_add_word(bnser, 1))
                              goto end;
                        ser = BN_to_ASN1_INTEGER(bnser, NULL);
                        if (!ser)
                              goto end;
                        BN_free(bnser);
                        i2a_ASN1_INTEGER(out, ser);
                        ASN1_INTEGER_free(ser);
                        BIO_puts(out, "\n");
                        }
                  else if (email == i) 
                        {
                        int j;
                        STACK *emlst;
                        emlst = X509_get1_email(x);
                        for (j = 0; j < sk_num(emlst); j++)
                              BIO_printf(STDout, "%s\n", sk_value(emlst, j));
                        X509_email_free(emlst);
                        }
                  else if (aliasout == i)
                        {
                        unsigned char *alstr;
                        alstr = X509_alias_get0(x, NULL);
                        if (alstr) BIO_printf(STDout,"%s\n", alstr);
                        else BIO_puts(STDout,"<No Alias>\n");
                        }
                  else if (subject_hash == i)
                        {
                        BIO_printf(STDout,"%08lx\n",X509_subject_name_hash(x));
                        }
                  else if (issuer_hash == i)
                        {
                        BIO_printf(STDout,"%08lx\n",X509_issuer_name_hash(x));
                        }
                  else if (pprint == i)
                        {
                        X509_PURPOSE *ptmp;
                        int j;
                        BIO_printf(STDout, "Certificate purposes:\n");
                        for (j = 0; j < X509_PURPOSE_get_count(); j++)
                              {
                              ptmp = X509_PURPOSE_get0(j);
                              purpose_print(STDout, x, ptmp);
                              }
                        }
                  else
                        if (modulus == i)
                        {
                        EVP_PKEY *pkey;

                        pkey=X509_get_pubkey(x);
                        if (pkey == NULL)
                              {
                              BIO_printf(bio_err,"Modulus=unavailable\n");
                              ERR_print_errors(bio_err);
                              goto end;
                              }
                        BIO_printf(STDout,"Modulus=");
#ifndef OPENSSL_NO_RSA
                        if (pkey->type == EVP_PKEY_RSA)
                              BN_print(STDout,pkey->pkey.rsa->n);
                        else
#endif
#ifndef OPENSSL_NO_DSA
                        if (pkey->type == EVP_PKEY_DSA)
                              BN_print(STDout,pkey->pkey.dsa->pub_key);
                        else
#endif
                              BIO_printf(STDout,"Wrong Algorithm type");
                        BIO_printf(STDout,"\n");
                        EVP_PKEY_free(pkey);
                        }
                  else
                        if (pubkey == i)
                        {
                        EVP_PKEY *pkey;

                        pkey=X509_get_pubkey(x);
                        if (pkey == NULL)
                              {
                              BIO_printf(bio_err,"Error getting public key\n");
                              ERR_print_errors(bio_err);
                              goto end;
                              }
                        PEM_write_bio_PUBKEY(STDout, pkey);
                        EVP_PKEY_free(pkey);
                        }
                  else
                        if (C == i)
                        {
                        unsigned char *d;
                        char *m;
                        int y,z;

                        X509_NAME_oneline(X509_get_subject_name(x),
                              buf,sizeof buf);
                        BIO_printf(STDout,"/* subject:%s */\n",buf);
                        m=X509_NAME_oneline(
                              X509_get_issuer_name(x),buf,
                              sizeof buf);
                        BIO_printf(STDout,"/* issuer :%s */\n",buf);

                        z=i2d_X509(x,NULL);
                        m=OPENSSL_malloc(z);

                        d=(unsigned char *)m;
                        z=i2d_X509_NAME(X509_get_subject_name(x),&d);
                        BIO_printf(STDout,"unsigned char XXX_subject_name[%d]={\n",z);
                        d=(unsigned char *)m;
                        for (y=0; y<z; y++)
                              {
                              BIO_printf(STDout,"0x%02X,",d[y]);
                              if ((y & 0x0f) == 0x0f) BIO_printf(STDout,"\n");
                              }
                        if (y%16 != 0) BIO_printf(STDout,"\n");
                        BIO_printf(STDout,"};\n");

                        z=i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x),&d);
                        BIO_printf(STDout,"unsigned char XXX_public_key[%d]={\n",z);
                        d=(unsigned char *)m;
                        for (y=0; y<z; y++)
                              {
                              BIO_printf(STDout,"0x%02X,",d[y]);
                              if ((y & 0x0f) == 0x0f)
                                    BIO_printf(STDout,"\n");
                              }
                        if (y%16 != 0) BIO_printf(STDout,"\n");
                        BIO_printf(STDout,"};\n");

                        z=i2d_X509(x,&d);
                        BIO_printf(STDout,"unsigned char XXX_certificate[%d]={\n",z);
                        d=(unsigned char *)m;
                        for (y=0; y<z; y++)
                              {
                              BIO_printf(STDout,"0x%02X,",d[y]);
                              if ((y & 0x0f) == 0x0f)
                                    BIO_printf(STDout,"\n");
                              }
                        if (y%16 != 0) BIO_printf(STDout,"\n");
                        BIO_printf(STDout,"};\n");

                        OPENSSL_free(m);
                        }
                  else if (text == i)
                        {
                        X509_print_ex(out,x,nmflag, certflag);
                        }
                  else if (startdate == i)
                        {
                        BIO_puts(STDout,"notBefore=");
                        ASN1_TIME_print(STDout,X509_get_notBefore(x));
                        BIO_puts(STDout,"\n");
                        }
                  else if (enddate == i)
                        {
                        BIO_puts(STDout,"notAfter=");
                        ASN1_TIME_print(STDout,X509_get_notAfter(x));
                        BIO_puts(STDout,"\n");
                        }
                  else if (fingerprint == i)
                        {
                        int j;
                        unsigned int n;
                        unsigned char md[EVP_MAX_MD_SIZE];

                        if (!X509_digest(x,digest,md,&n))
                              {
                              BIO_printf(bio_err,"out of memory\n");
                              goto end;
                              }
                        BIO_printf(STDout,"%s Fingerprint=",
                                    OBJ_nid2sn(EVP_MD_type(digest)));
                        for (j=0; j<(int)n; j++)
                              {
                              BIO_printf(STDout,"%02X%c",md[j],
                                    (j+1 == (int)n)
                                    ?'\n':':');
                              }
                        }

                  /* should be in the library */
                  else if ((sign_flag == i) && (x509req == 0))
                        {
                        BIO_printf(bio_err,"Getting Private key\n");
                        if (Upkey == NULL)
                              {
                              Upkey=load_key(bio_err,
                                    keyfile, keyformat, 0,
                                    passin, e, "Private key");
                              if (Upkey == NULL) goto end;
                              }
#ifndef OPENSSL_NO_DSA
                            if (Upkey->type == EVP_PKEY_DSA)
                                    digest=EVP_dss1();
#endif
#ifndef OPENSSL_NO_ECDSA
                        if (Upkey->type == EVP_PKEY_EC)
                              digest=EVP_ecdsa();
#endif

                        assert(need_rand);
                        if (!sign(x,Upkey,days,clrext,digest,
                                     extconf, extsect)) goto end;
                        }
                  else if (CA_flag == i)
                        {
                        BIO_printf(bio_err,"Getting CA Private Key\n");
                        if (CAkeyfile != NULL)
                              {
                              CApkey=load_key(bio_err,
                                    CAkeyfile, CAkeyformat,
                                    0, passin, e,
                                    "CA Private Key");
                              if (CApkey == NULL) goto end;
                              }
#ifndef OPENSSL_NO_DSA
                            if (CApkey->type == EVP_PKEY_DSA)
                                    digest=EVP_dss1();
#endif
#ifndef OPENSSL_NO_ECDSA
                        if (CApkey->type == EVP_PKEY_EC)
                              digest = EVP_ecdsa();
#endif
                        
                        assert(need_rand);
                        if (!x509_certify(ctx,CAfile,digest,x,xca,
                              CApkey, CAserial,CA_createserial,days, clrext,
                              extconf, extsect, sno))
                              goto end;
                        }
                  else if (x509req == i)
                        {
                        EVP_PKEY *pk;

                        BIO_printf(bio_err,"Getting request Private Key\n");
                        if (keyfile == NULL)
                              {
                              BIO_printf(bio_err,"no request key file specified\n");
                              goto end;
                              }
                        else
                              {
                              pk=load_key(bio_err,
                                    keyfile, FORMAT_PEM, 0,
                                    passin, e, "request key");
                              if (pk == NULL) goto end;
                              }

                        BIO_printf(bio_err,"Generating certificate request\n");

#ifndef OPENSSL_NO_DSA
                            if (pk->type == EVP_PKEY_DSA)
                                    digest=EVP_dss1();
#endif
#ifndef OPENSSL_NO_ECDSA
                        if (pk->type == EVP_PKEY_EC)
                              digest=EVP_ecdsa();
#endif

                        rq=X509_to_X509_REQ(x,pk,digest);
                        EVP_PKEY_free(pk);
                        if (rq == NULL)
                              {
                              ERR_print_errors(bio_err);
                              goto end;
                              }
                        if (!noout)
                              {
                              X509_REQ_print(out,rq);
                              PEM_write_bio_X509_REQ(out,rq);
                              }
                        noout=1;
                        }
                  else if (ocspid == i)
                        {
                        X509_ocspid_print(out, x);
                        }
                  }
            }

      if (checkend)
            {
            time_t tcheck=time(NULL) + checkoffset;

            if (X509_cmp_time(X509_get_notAfter(x), &tcheck) < 0)
                  {
                  BIO_printf(out,"Certificate will expire\n");
                  ret=1;
                  }
            else
                  {
                  BIO_printf(out,"Certificate will not expire\n");
                  ret=0;
                  }
            goto end;
            }

      if (noout)
            {
            ret=0;
            goto end;
            }

      if    (outformat == FORMAT_ASN1)
            i=i2d_X509_bio(out,x);
      else if (outformat == FORMAT_PEM)
            {
            if (trustout) i=PEM_write_bio_X509_AUX(out,x);
            else i=PEM_write_bio_X509(out,x);
            }
      else if (outformat == FORMAT_NETSCAPE)
            {
            ASN1_HEADER ah;
            ASN1_OCTET_STRING os;

            os.data=(unsigned char *)NETSCAPE_CERT_HDR;
            os.length=strlen(NETSCAPE_CERT_HDR);
            ah.header= &os;
            ah.data=(char *)x;
            ah.meth=X509_asn1_meth();

            i=ASN1_i2d_bio_of(ASN1_HEADER,i2d_ASN1_HEADER,out,&ah);
            }
      else  {
            BIO_printf(bio_err,"bad output format specified for outfile\n");
            goto end;
            }
      if (!i)
            {
            BIO_printf(bio_err,"unable to write certificate\n");
            ERR_print_errors(bio_err);
            goto end;
            }
      ret=0;
end:
      if (need_rand)
            app_RAND_write_file(NULL, bio_err);
      OBJ_cleanup();
      NCONF_free(extconf);
      BIO_free_all(out);
      BIO_free_all(STDout);
      X509_STORE_free(ctx);
      X509_REQ_free(req);
      X509_free(x);
      X509_free(xca);
      EVP_PKEY_free(Upkey);
      EVP_PKEY_free(CApkey);
      X509_REQ_free(rq);
      ASN1_INTEGER_free(sno);
      sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
      sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
      if (passin) OPENSSL_free(passin);
      apps_shutdown();
      OPENSSL_EXIT(ret);
      }

static ASN1_INTEGER *x509_load_serial(char *CAfile, char *serialfile, int create)
      {
      char *buf = NULL, *p;
      ASN1_INTEGER *bs = NULL;
      BIGNUM *serial = NULL;
      size_t len;

      len = ((serialfile == NULL)
            ?(strlen(CAfile)+strlen(POSTFIX)+1)
            :(strlen(serialfile)))+1;
      buf=OPENSSL_malloc(len);
      if (buf == NULL) { BIO_printf(bio_err,"out of mem\n"); goto end; }
      if (serialfile == NULL)
            {
            BUF_strlcpy(buf,CAfile,len);
            for (p=buf; *p; p++)
                  if (*p == '.')
                        {
                        *p='\0';
                        break;
                        }
            BUF_strlcat(buf,POSTFIX,len);
            }
      else
            BUF_strlcpy(buf,serialfile,len);

      serial = load_serial(buf, create, NULL);
      if (serial == NULL) goto end;

      if (!BN_add_word(serial,1))
            { BIO_printf(bio_err,"add_word failure\n"); goto end; }

      if (!save_serial(buf, NULL, serial, &bs)) goto end;

 end:
      if (buf) OPENSSL_free(buf);
      BN_free(serial);
      return bs;
      }

static int x509_certify(X509_STORE *ctx, char *CAfile, const EVP_MD *digest,
           X509 *x, X509 *xca, EVP_PKEY *pkey, char *serialfile, int create,
           int days, int clrext, CONF *conf, char *section, ASN1_INTEGER *sno)
      {
      int ret=0;
      ASN1_INTEGER *bs=NULL;
      X509_STORE_CTX xsc;
      EVP_PKEY *upkey;

      upkey = X509_get_pubkey(xca);
      EVP_PKEY_copy_parameters(upkey,pkey);
      EVP_PKEY_free(upkey);

      if(!X509_STORE_CTX_init(&xsc,ctx,x,NULL))
            {
            BIO_printf(bio_err,"Error initialising X509 store\n");
            goto end;
            }
      if (sno) bs = sno;
      else if (!(bs = x509_load_serial(CAfile, serialfile, create)))
            goto end;

/*    if (!X509_STORE_add_cert(ctx,x)) goto end;*/

      /* NOTE: this certificate can/should be self signed, unless it was
       * a certificate request in which case it is not. */
      X509_STORE_CTX_set_cert(&xsc,x);
      if (!reqfile && X509_verify_cert(&xsc) <= 0)
            goto end;

      if (!X509_check_private_key(xca,pkey))
            {
            BIO_printf(bio_err,"CA certificate and CA private key do not match\n");
            goto end;
            }

      if (!X509_set_issuer_name(x,X509_get_subject_name(xca))) goto end;
      if (!X509_set_serialNumber(x,bs)) goto end;

      if (X509_gmtime_adj(X509_get_notBefore(x),0L) == NULL)
            goto end;

      /* hardwired expired */
      if (X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days) == NULL)
            goto end;

      if (clrext)
            {
            while (X509_get_ext_count(x) > 0) X509_delete_ext(x, 0);
            }

      if (conf)
            {
            X509V3_CTX ctx2;
            X509_set_version(x,2); /* version 3 certificate */
                X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
                X509V3_set_nconf(&ctx2, conf);
                if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x)) goto end;
            }

      if (!X509_sign(x,pkey,digest)) goto end;
      ret=1;
end:
      X509_STORE_CTX_cleanup(&xsc);
      if (!ret)
            ERR_print_errors(bio_err);
      if (!sno) ASN1_INTEGER_free(bs);
      return ret;
      }

static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx)
      {
      int err;
      X509 *err_cert;

      /* it is ok to use a self signed certificate
       * This case will catch both the initial ok == 0 and the
       * final ok == 1 calls to this function */
      err=X509_STORE_CTX_get_error(ctx);
      if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
            return 1;

      /* BAD we should have gotten an error.  Normally if everything
       * worked X509_STORE_CTX_get_error(ctx) will still be set to
       * DEPTH_ZERO_SELF_.... */
      if (ok)
            {
            BIO_printf(bio_err,"error with certificate to be certified - should be self signed\n");
            return 0;
            }
      else
            {
            err_cert=X509_STORE_CTX_get_current_cert(ctx);
            print_name(bio_err, NULL, X509_get_subject_name(err_cert),0);
            BIO_printf(bio_err,"error with certificate - error %d at depth %d\n%s\n",
                  err,X509_STORE_CTX_get_error_depth(ctx),
                  X509_verify_cert_error_string(err));
            return 1;
            }
      }

/* self sign */
static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext, const EVP_MD *digest, 
                                    CONF *conf, char *section)
      {

      EVP_PKEY *pktmp;

      pktmp = X509_get_pubkey(x);
      EVP_PKEY_copy_parameters(pktmp,pkey);
      EVP_PKEY_save_parameters(pktmp,1);
      EVP_PKEY_free(pktmp);

      if (!X509_set_issuer_name(x,X509_get_subject_name(x))) goto err;
      if (X509_gmtime_adj(X509_get_notBefore(x),0) == NULL) goto err;

      /* Lets just make it 12:00am GMT, Jan 1 1970 */
      /* memcpy(x->cert_info->validity->notBefore,"700101120000Z",13); */
      /* 28 days to be certified */

      if (X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days) == NULL)
            goto err;

      if (!X509_set_pubkey(x,pkey)) goto err;
      if (clrext)
            {
            while (X509_get_ext_count(x) > 0) X509_delete_ext(x, 0);
            }
      if (conf)
            {
            X509V3_CTX ctx;
            X509_set_version(x,2); /* version 3 certificate */
                X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
                X509V3_set_nconf(&ctx, conf);
                if (!X509V3_EXT_add_nconf(conf, &ctx, section, x)) goto err;
            }
      if (!X509_sign(x,pkey,digest)) goto err;
      return 1;
err:
      ERR_print_errors(bio_err);
      return 0;
      }

static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
{
      int id, i, idret;
      char *pname;
      id = X509_PURPOSE_get_id(pt);
      pname = X509_PURPOSE_get0_name(pt);
      for (i = 0; i < 2; i++)
            {
            idret = X509_check_purpose(cert, id, i);
            BIO_printf(bio, "%s%s : ", pname, i ? " CA" : ""); 
            if (idret == 1) BIO_printf(bio, "Yes\n");
            else if (idret == 0) BIO_printf(bio, "No\n");
            else BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
            }
      return 1;
}

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