Initial support for certificate purpose checking: this will
[openssl.git] / apps / x509.c
index ec20654bade42f00ac0fa15eada456002baa292a..70bd1391a70f10969ae4074eb9e321a09bd122d4 100644 (file)
@@ -1,5 +1,5 @@
 /* apps/x509.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#ifdef WIN16
+#ifdef NO_STDIO
 #define APPS_WIN16
 #endif
 #include "apps.h"
-#include "bio.h"
-#include "asn1.h"
-#include "err.h"
-#include "bn.h"
-#include "evp.h"
-#include "x509.h"
-#include "objects.h"
-#include "pem.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>
 
 #undef PROG
 #define PROG x509_main
 #define        POSTFIX ".srl"
 #define DEF_DAYS       30
 
-#define FORMAT_UNDEF   0
-#define FORMAT_ASN1    1
-#define FORMAT_TEXT    2
-#define FORMAT_PEM     3
-
 #define CERT_HDR       "certificate"
 
 static 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",
+" -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",
@@ -101,6 +97,7 @@ static char *x509_usage[]={
 " -issuer         - print issuer DN\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",
 " -fingerprint    - print the certificate fingerprint\n",
@@ -115,32 +112,31 @@ static char *x509_usage[]={
 "                   missing, it is asssumed to be in the CA file.\n",
 " -CAcreateserial - create serial number file if it does not exist\n",
 " -CAserial       - serial file\n",
-" -text           - print the certitificate in text form\n",
+" -text           - print the certificate in text form\n",
 " -C              - print out C code forms\n",
 " -md2/-md5/-sha1/-mdc2 - digest to do an RSA sign with\n",
+" -extfile        - configuration file with X509V3 extensions to add\n",
+" -extensions     - section from config file with X509V3 extensions to add\n",
 NULL
 };
 
-#ifndef NOPROTO
 static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx);
 static EVP_PKEY *load_key(char *file, int format);
 static X509 *load_cert(char *file, int format);
-static int sign (X509 *x, EVP_PKEY *pkey,int days,EVP_MD *digest);
-static int x509_certify (X509_STORE *ctx,char *CAfile, EVP_MD *digest,X509 *x,
-       X509 *xca, EVP_PKEY *pkey,char *serial, int create, int days);
-#else
-static int MS_CALLBACK callb();
-static EVP_PKEY *load_key();
-static X509 *load_cert();
-static int sign ();
-static int x509_certify ();
-#endif
-
+static int sign (X509 *x, EVP_PKEY *pkey,int days,const EVP_MD *digest,
+                                               LHASH *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, LHASH *conf, char *section);
+static int efunc(X509_PURPOSE *pt, void *arg);
 static int reqfile=0;
 
-int MAIN(argc, argv)
-int argc;
-char **argv;
+typedef struct {
+BIO *bio;
+X509 *cert;
+} X509_PPRINT;
+
+int MAIN(int argc, char **argv)
        {
        int ret=1;
        X509_REQ *req=NULL;
@@ -156,12 +152,15 @@ char **argv;
        int noout=0,sign_flag=0,CA_flag=0,CA_createserial=0;
        int C=0;
        int x509req=0,days=DEF_DAYS,modulus=0;
+       int pprint = 0;
        char **pp;
        X509_STORE *ctx=NULL;
        X509_REQ *rq=NULL;
        int fingerprint=0;
        char buf[256];
-       EVP_MD *md_alg,*digest=EVP_md5();
+       const EVP_MD *md_alg,*digest=EVP_md5();
+       LHASH *extconf = NULL;
+       char *extsect = NULL, *extfile = NULL;
 
        reqfile=0;
 
@@ -219,10 +218,20 @@ char **argv;
                        days=atoi(*(++argv));
                        if (days == 0)
                                {
-                               BIO_printf(bio_err,"bad number of days\n");
+                               BIO_printf(STDout,"bad number of days\n");
                                goto bad;
                                }
                        }
+               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;
@@ -278,6 +287,8 @@ char **argv;
                        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)
@@ -310,6 +321,8 @@ bad:
                }
 
        ERR_load_crypto_strings();
+       X509V3_add_standard_extensions();
+       X509_PURPOSE_add_standard();
 
        if (!X509_STORE_set_default_paths(ctx))
                {
@@ -325,6 +338,34 @@ bad:
                goto end;
                }
 
+       if (extfile) {
+               long errorline;
+               X509V3_CTX ctx2;
+               if (!(extconf=CONF_load(NULL,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 = CONF_get_string(extconf, "default",
+                                        "extensions"))) extsect = "default";
+               X509V3_set_ctx_test(&ctx2);
+               X509V3_set_conf_lhash(&ctx2, extconf);
+               if(!X509V3_EXT_add_conf(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;
@@ -344,7 +385,7 @@ bad:
                        }
 
                if (infile == NULL)
-                       BIO_set_fp(in,stdin,BIO_NOCLOSE);
+                       BIO_set_fp(in,stdin,BIO_NOCLOSE|BIO_FP_TEXT);
                else
                        {
                        if (BIO_read_filename(in,infile) <= 0)
@@ -353,7 +394,7 @@ bad:
                                goto end;
                                }
                        }
-               req=PEM_read_bio_X509_REQ(in,NULL,NULL);
+               req=PEM_read_bio_X509_REQ(in,NULL,NULL,NULL);
                BIO_free(in);
 
                if (req == NULL) { perror(infile); goto end; }
@@ -373,6 +414,7 @@ bad:
                        goto end;
                        }
                i=X509_REQ_verify(req,pkey);
+               EVP_PKEY_free(pkey);
                if (i < 0)
                        {
                        BIO_printf(bio_err,"Signature verification error\n");
@@ -400,9 +442,15 @@ bad:
                X509_gmtime_adj(X509_get_notBefore(x),0);
                X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days);
 
+#if 0
                X509_PUBKEY_free(ci->key);
                ci->key=req->req_info->pubkey;
                req->req_info->pubkey=NULL;
+#else
+               pkey = X509_REQ_get_pubkey(req);
+               X509_set_pubkey(x,pkey);
+               EVP_PKEY_free(pkey);
+#endif
                }
        else
                x=load_cert(infile,informat);
@@ -416,7 +464,7 @@ bad:
 
        if (!noout || text)
                {
-               OBJ_create_and_add_object("2.99999.3",
+               OBJ_create("2.99999.3",
                        "SET.ex3","SET x509v3 extension 3");
 
                out=BIO_new(BIO_s_file());
@@ -445,27 +493,33 @@ bad:
                                {
                                X509_NAME_oneline(X509_get_issuer_name(x),
                                        buf,256);
-                               fprintf(stdout,"issuer= %s\n",buf);
+                               BIO_printf(STDout,"issuer= %s\n",buf);
                                }
                        else if (subject == i) 
                                {
                                X509_NAME_oneline(X509_get_subject_name(x),
                                        buf,256);
-                               fprintf(stdout,"subject=%s\n",buf);
+                               BIO_printf(STDout,"subject=%s\n",buf);
                                }
                        else if (serial == i)
                                {
-                               fprintf(stdout,"serial=");
+                               BIO_printf(STDout,"serial=");
                                i2a_ASN1_INTEGER(STDout,x->cert_info->serialNumber);
-                               fprintf(stdout,"\n");
+                               BIO_printf(STDout,"\n");
                                }
                        else if (hash == i)
                                {
-                               fprintf(stdout,"%08lx\n",
-                                       X509_subject_name_hash(x));
+                               BIO_printf(STDout,"%08lx\n",X509_subject_name_hash(x));
+                               }
+                       else if (pprint == i)
+                               {
+                               X509_PPRINT ptmp;
+                               ptmp.bio = STDout;
+                               ptmp.cert = x;
+                               BIO_printf(STDout, "Certificate purposes:\n");
+                               X509_PURPOSE_enum(efunc, &ptmp);
                                }
                        else
-#ifndef NO_RSA
                                if (modulus == i)
                                {
                                EVP_PKEY *pkey;
@@ -473,19 +527,26 @@ bad:
                                pkey=X509_get_pubkey(x);
                                if (pkey == NULL)
                                        {
-                                       fprintf(stdout,"Modulus=unavailable\n");
+                                       BIO_printf(bio_err,"Modulus=unavailable\n");
                                        ERR_print_errors(bio_err);
                                        goto end;
                                        }
-                               fprintf(stdout,"Modulus=");
+                               BIO_printf(STDout,"Modulus=");
+#ifndef NO_RSA
                                if (pkey->type == EVP_PKEY_RSA)
                                        BN_print(STDout,pkey->pkey.rsa->n);
                                else
-                                       fprintf(stdout,"Wrong Algorithm type");
-                               fprintf(stdout,"\n");
+#endif
+#ifndef 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
-#endif
                                if (C == i)
                                {
                                unsigned char *d;
@@ -494,47 +555,49 @@ bad:
 
                                X509_NAME_oneline(X509_get_subject_name(x),
                                        buf,256);
-                               printf("/* subject:%s */\n",buf);
+                               BIO_printf(STDout,"/* subject:%s */\n",buf);
                                m=X509_NAME_oneline(
                                        X509_get_issuer_name(x),buf,256);
-                               printf("/* issuer :%s */\n",buf);
+                               BIO_printf(STDout,"/* issuer :%s */\n",buf);
 
                                z=i2d_X509(x,NULL);
                                m=Malloc(z);
 
                                d=(unsigned char *)m;
                                z=i2d_X509_NAME(X509_get_subject_name(x),&d);
-                               printf("unsigned char XXX_subject_name[%d]={\n",z);
+                               BIO_printf(STDout,"unsigned char XXX_subject_name[%d]={\n",z);
                                d=(unsigned char *)m;
                                for (y=0; y<z; y++)
                                        {
-                                       printf("0x%02X,",d[y]);
-                                       if ((y & 0x0f) == 0x0f) printf("\n");
+                                       BIO_printf(STDout,"0x%02X,",d[y]);
+                                       if ((y & 0x0f) == 0x0f) BIO_printf(STDout,"\n");
                                        }
-                               if (y%16 != 0) printf("\n");
-                               printf("};\n");
+                               if (y%16 != 0) BIO_printf(STDout,"\n");
+                               BIO_printf(STDout,"};\n");
 
                                z=i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x),&d);
-                               printf("unsigned char XXX_public_key[%d]={\n",z);
+                               BIO_printf(STDout,"unsigned char XXX_public_key[%d]={\n",z);
                                d=(unsigned char *)m;
                                for (y=0; y<z; y++)
                                        {
-                                       printf("0x%02X,",d[y]);
-                                       if ((y & 0x0f) == 0x0f) printf("\n");
+                                       BIO_printf(STDout,"0x%02X,",d[y]);
+                                       if ((y & 0x0f) == 0x0f)
+                                               BIO_printf(STDout,"\n");
                                        }
-                               if (y%16 != 0) printf("\n");
-                               printf("};\n");
+                               if (y%16 != 0) BIO_printf(STDout,"\n");
+                               BIO_printf(STDout,"};\n");
 
                                z=i2d_X509(x,&d);
-                               printf("unsigned char XXX_certificate[%d]={\n",z);
+                               BIO_printf(STDout,"unsigned char XXX_certificate[%d]={\n",z);
                                d=(unsigned char *)m;
                                for (y=0; y<z; y++)
                                        {
-                                       printf("0x%02X,",d[y]);
-                                       if ((y & 0x0f) == 0x0f) printf("\n");
+                                       BIO_printf(STDout,"0x%02X,",d[y]);
+                                       if ((y & 0x0f) == 0x0f)
+                                               BIO_printf(STDout,"\n");
                                        }
-                               if (y%16 != 0) printf("\n");
-                               printf("};\n");
+                               if (y%16 != 0) BIO_printf(STDout,"\n");
+                               BIO_printf(STDout,"};\n");
 
                                Free(m);
                                }
@@ -545,13 +608,13 @@ bad:
                        else if (startdate == i)
                                {
                                BIO_puts(STDout,"notBefore=");
-                               ASN1_UTCTIME_print(STDout,X509_get_notBefore(x));
+                               ASN1_TIME_print(STDout,X509_get_notBefore(x));
                                BIO_puts(STDout,"\n");
                                }
                        else if (enddate == i)
                                {
                                BIO_puts(STDout,"notAfter=");
-                               ASN1_UTCTIME_print(STDout,X509_get_notAfter(x));
+                               ASN1_TIME_print(STDout,X509_get_notAfter(x));
                                BIO_puts(STDout,"\n");
                                }
                        else if (fingerprint == i)
@@ -565,10 +628,10 @@ bad:
                                        BIO_printf(bio_err,"out of memory\n");
                                        goto end;
                                        }
-                               fprintf(stdout,"MD5 Fingerprint=");
+                               BIO_printf(STDout,"MD5 Fingerprint=");
                                for (j=0; j<(int)n; j++)
                                        {
-                                       fprintf(stdout,"%02X%c",md[j],
+                                       BIO_printf(STDout,"%02X%c",md[j],
                                                (j+1 == (int)n)
                                                ?'\n':':');
                                        }
@@ -588,7 +651,8 @@ bad:
                                        digest=EVP_dss1();
 #endif
 
-                               if (!sign(x,Upkey,days,digest)) goto end;
+                               if (!sign(x,Upkey,days,digest,
+                                                extconf, extsect)) goto end;
                                }
                        else if (CA_flag == i)
                                {
@@ -602,9 +666,10 @@ bad:
                                if (CApkey->type == EVP_PKEY_DSA)
                                        digest=EVP_dss1();
 #endif
+                               
                                if (!x509_certify(ctx,CAfile,digest,x,xca,
-                                       CApkey,
-                                       CAserial,CA_createserial,days))
+                                       CApkey, CAserial,CA_createserial,days,
+                                       extconf, extsect))
                                        goto end;
                                }
                        else if (x509req == i)
@@ -625,7 +690,7 @@ bad:
 
                                BIO_printf(bio_err,"Generating certificate request\n");
 
-                               rq=X509_to_X509_REQ(x,pk);
+                               rq=X509_to_X509_REQ(x,pk,EVP_md5());
                                EVP_PKEY_free(pk);
                                if (rq == NULL)
                                        {
@@ -678,28 +743,23 @@ bad:
        ret=0;
 end:
        OBJ_cleanup();
-       if (out != NULL) BIO_free(out);
-       if (STDout != NULL) BIO_free(STDout);
-       if (ctx != NULL) X509_STORE_free(ctx);
-       if (req != NULL) X509_REQ_free(req);
-       if (x != NULL) X509_free(x);
-       if (xca != NULL) X509_free(xca);
-       if (Upkey != NULL) EVP_PKEY_free(Upkey);
-       if (CApkey != NULL) EVP_PKEY_free(CApkey);
-       if (rq != NULL) X509_REQ_free(rq);
+       CONF_free(extconf);
+       BIO_free(out);
+       BIO_free(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);
+       X509V3_EXT_cleanup();
        EXIT(ret);
        }
 
-static int x509_certify(ctx,CAfile,digest,x,xca,pkey,serialfile,create,days)
-X509_STORE *ctx;
-char *CAfile;
-EVP_MD *digest;
-X509 *x;
-X509 *xca;
-EVP_PKEY *pkey;
-char *serialfile;
-int create;
-int days;
+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, LHASH *conf, char *section)
        {
        int ret=0;
        BIO *io=NULL;
@@ -710,7 +770,9 @@ int days;
        X509_STORE_CTX xsc;
        EVP_PKEY *upkey;
 
-       EVP_PKEY_copy_parameters(X509_get_pubkey(xca),pkey);
+       upkey = X509_get_pubkey(xca);
+       EVP_PKEY_copy_parameters(upkey,pkey);
+       EVP_PKEY_free(upkey);
 
        X509_STORE_CTX_init(&xsc,ctx,x,NULL);
        buf=(char *)Malloc(EVP_PKEY_size(pkey)*2+
@@ -802,6 +864,12 @@ int days;
        if (!reqfile && !X509_verify_cert(&xsc))
                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;
 
@@ -812,14 +880,13 @@ int days;
        if (X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days) == NULL)
                goto end;
 
-       /* don't save DSA parameters in child if parent has them. */
-       upkey=X509_get_pubkey(x);
-       if (!EVP_PKEY_missing_parameters(pkey))
-               {
-               EVP_PKEY_save_parameters(upkey,0);
-               /* Force a re-write */
-               X509_set_pubkey(x,upkey);
-               }
+       if(conf) {
+               X509V3_CTX ctx2;
+               X509_set_version(x,2); /* version 3 certificate */
+                X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
+                X509V3_set_conf_lhash(&ctx2, conf);
+                if(!X509V3_EXT_add_conf(conf, &ctx2, section, x)) goto end;
+       }
 
        if (!X509_sign(x,pkey,digest)) goto end;
        ret=1;
@@ -834,9 +901,7 @@ end:
        return(ret);
        }
 
-static int MS_CALLBACK callb(ok, ctx)
-int ok;
-X509_STORE_CTX *ctx;
+static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx)
        {
        char buf[256];
        int err;
@@ -854,24 +919,22 @@ X509_STORE_CTX *ctx;
         * DEPTH_ZERO_SELF_.... */
        if (ok)
                {
-               printf("error with certificate to be certified - should be self signed\n");
+               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);
                X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
-               printf("%s\n",buf);
-               printf("error with certificate - error %d at depth %d\n%s\n",
+               BIO_printf(bio_err,"%s\n",buf);
+               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);
                }
        }
 
-static EVP_PKEY *load_key(file, format)
-char *file;
-int format;
+static EVP_PKEY *load_key(char *file, int format)
        {
        BIO *key=NULL;
        EVP_PKEY *pkey=NULL;
@@ -910,7 +973,7 @@ int format;
 #endif
                if (format == FORMAT_PEM)
                {
-               pkey=PEM_read_bio_PrivateKey(key,NULL,NULL);
+               pkey=PEM_read_bio_PrivateKey(key,NULL,NULL,NULL);
                }
        else
                {
@@ -924,9 +987,7 @@ end:
        return(pkey);
        }
 
-static X509 *load_cert(file, format)
-char *file;
-int format;
+static X509 *load_cert(char *file, int format)
        {
        ASN1_HEADER *ah=NULL;
        BUF_MEM *buf=NULL;
@@ -995,7 +1056,7 @@ int format;
                ah->data=NULL;
                }
        else if (format == FORMAT_PEM)
-               x=PEM_read_bio_X509(cert,NULL,NULL);
+               x=PEM_read_bio_X509(cert,NULL,NULL,NULL);
        else    {
                BIO_printf(bio_err,"bad input format specified for input cert\n");
                goto end;
@@ -1013,15 +1074,16 @@ end:
        }
 
 /* self sign */
-static int sign(x, pkey, days, digest)
-X509 *x;
-EVP_PKEY *pkey;
-int days;
-EVP_MD *digest;
+static int sign(X509 *x, EVP_PKEY *pkey, int days, const EVP_MD *digest, 
+                                               LHASH *conf, char *section)
        {
 
-       EVP_PKEY_copy_parameters(X509_get_pubkey(x),pkey);
-       EVP_PKEY_save_parameters(X509_get_pubkey(x),1);
+       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;
@@ -1034,9 +1096,37 @@ EVP_MD *digest;
                goto err;
 
        if (!X509_set_pubkey(x,pkey)) goto err;
+       if(conf) {
+               X509V3_CTX ctx;
+               X509_set_version(x,2); /* version 3 certificate */
+                X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
+                X509V3_set_conf_lhash(&ctx, conf);
+                if(!X509V3_EXT_add_conf(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 efunc(X509_PURPOSE *pt, void *arg)
+{
+       X509_PPRINT *ptmp;
+       int id, i, idret;
+       char *pname;
+       ptmp = arg;
+       id = X509_PURPOSE_get_id(pt);
+       pname = X509_PURPOSE_get_name(pt);
+       for(i = 0; i < 2; i++) {
+               idret = X509_check_purpose(ptmp->cert, id, i);
+               BIO_printf(ptmp->bio, "%s%s : ", pname, i ? " CA" : ""); 
+               if(idret == 1) BIO_printf(ptmp->bio, "Yes\n");
+               else if (idret == 0) BIO_printf(ptmp->bio, "No\n");
+               else BIO_printf(ptmp->bio, "Yes (WARNING code=%d)\n", idret);
+       }
+       return 1;
+}
+
+
+