obj_dat.c

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/* crypto/objects/obj_dat.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * 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 ([email protected]).
 * 
 * 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 ([email protected])"
 *    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 ([email protected])"
 * 
 * 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 <ctype.h>
#include <limits.h>
#include "cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/bn.h>

/* obj_dat.h is generated from objects.h by obj_dat.pl */
#ifndef OPENSSL_NO_OBJECT
#include "obj_dat.h"
#else
/* You will have to load all the objects needed manually in the application */
#define NUM_NID 0
#define NUM_SN 0
#define NUM_LN 0
#define NUM_OBJ 0
static const unsigned char lvalues[1];
static const ASN1_OBJECT nid_objs[1];
static const unsigned int sn_objs[1];
static const unsigned int ln_objs[1];
static const unsigned int obj_objs[1];
#endif

DECLARE_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, sn);
DECLARE_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, ln);
DECLARE_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, obj);

#define ADDED_DATA  0
#define ADDED_SNAME 1
#define ADDED_LNAME 2
#define ADDED_NID   3

typedef struct added_obj_st
    {
    int type;
    ASN1_OBJECT *obj;
    } ADDED_OBJ;
DECLARE_LHASH_OF(ADDED_OBJ);

static int new_nid=NUM_NID;
static LHASH_OF(ADDED_OBJ) *added=NULL;

static int sn_cmp(const ASN1_OBJECT * const *a, const unsigned int *b)
    { return(strcmp((*a)->sn,nid_objs[*b].sn)); }

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, sn);

static int ln_cmp(const ASN1_OBJECT * const *a, const unsigned int *b)
    { return(strcmp((*a)->ln,nid_objs[*b].ln)); }

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, ln);

static unsigned long added_obj_hash(const ADDED_OBJ *ca)
    {
    const ASN1_OBJECT *a;
    int i;
    unsigned long ret=0;
    unsigned char *p;

    a=ca->obj;
    switch (ca->type)
        {
    case ADDED_DATA:
        ret=a->length<<20L;
        p=(unsigned char *)a->data;
        for (i=0; i<a->length; i++)
            ret^=p[i]<<((i*3)%24);
        break;
    case ADDED_SNAME:
        ret=lh_strhash(a->sn);
        break;
    case ADDED_LNAME:
        ret=lh_strhash(a->ln);
        break;
    case ADDED_NID:
        ret=a->nid;
        break;
    default:
        /* abort(); */
        return 0;
        }
    ret&=0x3fffffffL;
    ret|=ca->type<<30L;
    return(ret);
    }
static IMPLEMENT_LHASH_HASH_FN(added_obj, ADDED_OBJ)

static int added_obj_cmp(const ADDED_OBJ *ca, const ADDED_OBJ *cb)
    {
    ASN1_OBJECT *a,*b;
    int i;

    i=ca->type-cb->type;
    if (i) return(i);
    a=ca->obj;
    b=cb->obj;
    switch (ca->type)
        {
    case ADDED_DATA:
        i=(a->length - b->length);
        if (i) return(i);
        return(memcmp(a->data,b->data,(size_t)a->length));
    case ADDED_SNAME:
        if (a->sn == NULL) return(-1);
        else if (b->sn == NULL) return(1);
        else return(strcmp(a->sn,b->sn));
    case ADDED_LNAME:
        if (a->ln == NULL) return(-1);
        else if (b->ln == NULL) return(1);
        else return(strcmp(a->ln,b->ln));
    case ADDED_NID:
        return(a->nid-b->nid);
    default:
        /* abort(); */
        return 0;
        }
    }
static IMPLEMENT_LHASH_COMP_FN(added_obj, ADDED_OBJ)

static int init_added(void)
    {
    if (added != NULL) return(1);
    added=lh_ADDED_OBJ_new();
    return(added != NULL);
    }

static void cleanup1_doall(ADDED_OBJ *a)
    {
    a->obj->nid=0;
    a->obj->flags|=ASN1_OBJECT_FLAG_DYNAMIC|
                    ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
            ASN1_OBJECT_FLAG_DYNAMIC_DATA;
    }

static void cleanup2_doall(ADDED_OBJ *a)
    { a->obj->nid++; }

static void cleanup3_doall(ADDED_OBJ *a)
    {
    if (--a->obj->nid == 0)
        ASN1_OBJECT_free(a->obj);
    OPENSSL_free(a);
    }

static IMPLEMENT_LHASH_DOALL_FN(cleanup1, ADDED_OBJ)
static IMPLEMENT_LHASH_DOALL_FN(cleanup2, ADDED_OBJ)
static IMPLEMENT_LHASH_DOALL_FN(cleanup3, ADDED_OBJ)

/* The purpose of obj_cleanup_defer is to avoid EVP_cleanup() attempting
 * to use freed up OIDs. If neccessary the actual freeing up of OIDs is
 * delayed.
 */

int obj_cleanup_defer = 0;

void check_defer(int nid)
    {
    if (!obj_cleanup_defer && nid >= NUM_NID)
            obj_cleanup_defer = 1;
    }

void OBJ_cleanup(void)
    {
    if (obj_cleanup_defer)
        {
        obj_cleanup_defer = 2;
        return ;
        }
    if (added == NULL) return;
    lh_ADDED_OBJ_down_load(added) = 0;
    lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup1)); /* zero counters */
    lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup2)); /* set counters */
    lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup3)); /* free objects */
    lh_ADDED_OBJ_free(added);
    added=NULL;
    }

int OBJ_new_nid(int num)
    {
    int i;

    i=new_nid;
    new_nid+=num;
    return(i);
    }

int OBJ_add_object(const ASN1_OBJECT *obj)
    {
    ASN1_OBJECT *o;
    ADDED_OBJ *ao[4]={NULL,NULL,NULL,NULL},*aop;
    int i;

    if (added == NULL)
        if (!init_added()) return(0);
    if ((o=OBJ_dup(obj)) == NULL) goto err;
    if (!(ao[ADDED_NID]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
    if ((o->length != 0) && (obj->data != NULL))
        if (!(ao[ADDED_DATA]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
    if (o->sn != NULL)
        if (!(ao[ADDED_SNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
    if (o->ln != NULL)
        if (!(ao[ADDED_LNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;

    for (i=ADDED_DATA; i<=ADDED_NID; i++)
        {
        if (ao[i] != NULL)
            {
            ao[i]->type=i;
            ao[i]->obj=o;
            aop=lh_ADDED_OBJ_insert(added,ao[i]);
            /* memory leak, buit should not normally matter */
            if (aop != NULL)
                OPENSSL_free(aop);
            }
        }
    o->flags&= ~(ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
            ASN1_OBJECT_FLAG_DYNAMIC_DATA);

    return(o->nid);
err2:
    OBJerr(OBJ_F_OBJ_ADD_OBJECT,ERR_R_MALLOC_FAILURE);
err:
    for (i=ADDED_DATA; i<=ADDED_NID; i++)
        if (ao[i] != NULL) OPENSSL_free(ao[i]);
    if (o != NULL) OPENSSL_free(o);
    return(NID_undef);
    }

ASN1_OBJECT *OBJ_nid2obj(int n)
    {
    ADDED_OBJ ad,*adp;
    ASN1_OBJECT ob;

    if ((n >= 0) && (n < NUM_NID))
        {
        if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
            {
            OBJerr(OBJ_F_OBJ_NID2OBJ,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        return((ASN1_OBJECT *)&(nid_objs[n]));
        }
    else if (added == NULL)
        return(NULL);
    else
        {
        ad.type=ADDED_NID;
        ad.obj= &ob;
        ob.nid=n;
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL)
            return(adp->obj);
        else
            {
            OBJerr(OBJ_F_OBJ_NID2OBJ,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        }
    }

const char *OBJ_nid2sn(int n)
    {
    ADDED_OBJ ad,*adp;
    ASN1_OBJECT ob;

    if ((n >= 0) && (n < NUM_NID))
        {
        if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
            {
            OBJerr(OBJ_F_OBJ_NID2SN,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        return(nid_objs[n].sn);
        }
    else if (added == NULL)
        return(NULL);
    else
        {
        ad.type=ADDED_NID;
        ad.obj= &ob;
        ob.nid=n;
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL)
            return(adp->obj->sn);
        else
            {
            OBJerr(OBJ_F_OBJ_NID2SN,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        }
    }

const char *OBJ_nid2ln(int n)
    {
    ADDED_OBJ ad,*adp;
    ASN1_OBJECT ob;

    if ((n >= 0) && (n < NUM_NID))
        {
        if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
            {
            OBJerr(OBJ_F_OBJ_NID2LN,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        return(nid_objs[n].ln);
        }
    else if (added == NULL)
        return(NULL);
    else
        {
        ad.type=ADDED_NID;
        ad.obj= &ob;
        ob.nid=n;
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL)
            return(adp->obj->ln);
        else
            {
            OBJerr(OBJ_F_OBJ_NID2LN,OBJ_R_UNKNOWN_NID);
            return(NULL);
            }
        }
    }

static int obj_cmp(const ASN1_OBJECT * const *ap, const unsigned int *bp)
    {
    int j;
    const ASN1_OBJECT *a= *ap;
    const ASN1_OBJECT *b= &nid_objs[*bp];

    j=(a->length - b->length);
        if (j) return(j);
    return(memcmp(a->data,b->data,a->length));
    }

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const ASN1_OBJECT *, unsigned int, obj);

int OBJ_obj2nid(const ASN1_OBJECT *a)
    {
    const unsigned int *op;
    ADDED_OBJ ad,*adp;

    if (a == NULL)
        return(NID_undef);
    if (a->nid != 0)
        return(a->nid);

    if (added != NULL)
        {
        ad.type=ADDED_DATA;
        ad.obj=(ASN1_OBJECT *)a; /* XXX: ugly but harmless */
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL) return (adp->obj->nid);
        }
    op=OBJ_bsearch_obj(&a, obj_objs, NUM_OBJ);
    if (op == NULL)
        return(NID_undef);
    return(nid_objs[*op].nid);
    }

/* Convert an object name into an ASN1_OBJECT
 * if "noname" is not set then search for short and long names first.
 * This will convert the "dotted" form into an object: unlike OBJ_txt2nid
 * it can be used with any objects, not just registered ones.
 */

ASN1_OBJECT *OBJ_txt2obj(const char *s, int no_name)
    {
    int nid = NID_undef;
    ASN1_OBJECT *op=NULL;
    unsigned char *buf;
    unsigned char *p;
    const unsigned char *cp;
    int i, j;

    if(!no_name) {
        if( ((nid = OBJ_sn2nid(s)) != NID_undef) ||
            ((nid = OBJ_ln2nid(s)) != NID_undef) ) 
                    return OBJ_nid2obj(nid);
    }

    /* Work out size of content octets */
    i=a2d_ASN1_OBJECT(NULL,0,s,-1);
    if (i <= 0) {
        /* Don't clear the error */
        /*ERR_clear_error();*/
        return NULL;
    }
    /* Work out total size */
    j = ASN1_object_size(0,i,V_ASN1_OBJECT);

    if((buf=(unsigned char *)OPENSSL_malloc(j)) == NULL) return NULL;

    p = buf;
    /* Write out tag+length */
    ASN1_put_object(&p,0,i,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
    /* Write out contents */
    a2d_ASN1_OBJECT(p,i,s,-1);

    cp=buf;
    op=d2i_ASN1_OBJECT(NULL,&cp,j);
    OPENSSL_free(buf);
    return op;
    }

int OBJ_obj2txt(char *buf, int buf_len, const ASN1_OBJECT *a, int no_name)
{
    int i,n=0,len,nid, first, use_bn;
    BIGNUM *bl;
    unsigned long l;
    const unsigned char *p;
    char tbuf[DECIMAL_SIZE(i)+DECIMAL_SIZE(l)+2];

    if ((a == NULL) || (a->data == NULL)) {
        buf[0]='\0';
        return(0);
    }


    if (!no_name && (nid=OBJ_obj2nid(a)) != NID_undef)
        {
        const char *s;
        s=OBJ_nid2ln(nid);
        if (s == NULL)
            s=OBJ_nid2sn(nid);
        if (s)
            {
            if (buf)
                BUF_strlcpy(buf,s,buf_len);
            n=strlen(s);
            return n;
            }
        }


    len=a->length;
    p=a->data;

    first = 1;
    bl = NULL;

    while (len > 0)
        {
        l=0;
        use_bn = 0;
        for (;;)
            {
            unsigned char c = *p++;
            len--;
            if ((len == 0) && (c & 0x80))
                goto err;
            if (use_bn)
                {
                if (!BN_add_word(bl, c & 0x7f))
                    goto err;
                }
            else
                l |= c  & 0x7f;
            if (!(c & 0x80))
                break;
            if (!use_bn && (l > (ULONG_MAX >> 7L)))
                {
                if (!bl && !(bl = BN_new()))
                    goto err;
                if (!BN_set_word(bl, l))
                    goto err;
                use_bn = 1;
                }
            if (use_bn)
                {
                if (!BN_lshift(bl, bl, 7))
                    goto err;
                }
            else
                l<<=7L;
            }

        if (first)
            {
            first = 0;
            if (l >= 80)
                {
                i = 2;
                if (use_bn)
                    {
                    if (!BN_sub_word(bl, 80))
                        goto err;
                    }
                else
                    l -= 80;
                }
            else
                {
                i=(int)(l/40);
                l-=(long)(i*40);
                }
            if (buf && (buf_len > 0))
                {
                *buf++ = i + '0';
                buf_len--;
                }
            n++;
            }

        if (use_bn)
            {
            char *bndec;
            bndec = BN_bn2dec(bl);
            if (!bndec)
                goto err;
            i = strlen(bndec);
            if (buf)
                {
                if (buf_len > 0)
                    {
                    *buf++ = '.';
                    buf_len--;
                    }
                BUF_strlcpy(buf,bndec,buf_len);
                if (i > buf_len)
                    {
                    buf += buf_len;
                    buf_len = 0;
                    }
                else
                    {
                    buf+=i;
                    buf_len-=i;
                    }
                }
            n++;
            n += i;
            OPENSSL_free(bndec);
            }
        else
            {
            BIO_snprintf(tbuf,sizeof tbuf,".%lu",l);
            i=strlen(tbuf);
            if (buf && (buf_len > 0))
                {
                BUF_strlcpy(buf,tbuf,buf_len);
                if (i > buf_len)
                    {
                    buf += buf_len;
                    buf_len = 0;
                    }
                else
                    {
                    buf+=i;
                    buf_len-=i;
                    }
                }
            n+=i;
            l=0;
            }
        }

    if (bl)
        BN_free(bl);
    return n;

    err:
    if (bl)
        BN_free(bl);
    return -1;
}

int OBJ_txt2nid(const char *s)
{
    ASN1_OBJECT *obj;
    int nid;
    obj = OBJ_txt2obj(s, 0);
    nid = OBJ_obj2nid(obj);
    ASN1_OBJECT_free(obj);
    return nid;
}

int OBJ_ln2nid(const char *s)
    {
    ASN1_OBJECT o;
    const ASN1_OBJECT *oo= &o;
    ADDED_OBJ ad,*adp;
    const unsigned int *op;

    o.ln=s;
    if (added != NULL)
        {
        ad.type=ADDED_LNAME;
        ad.obj= &o;
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL) return (adp->obj->nid);
        }
    op=OBJ_bsearch_ln(&oo, ln_objs, NUM_LN);
    if (op == NULL) return(NID_undef);
    return(nid_objs[*op].nid);
    }

int OBJ_sn2nid(const char *s)
    {
    ASN1_OBJECT o;
    const ASN1_OBJECT *oo= &o;
    ADDED_OBJ ad,*adp;
    const unsigned int *op;

    o.sn=s;
    if (added != NULL)
        {
        ad.type=ADDED_SNAME;
        ad.obj= &o;
        adp=lh_ADDED_OBJ_retrieve(added,&ad);
        if (adp != NULL) return (adp->obj->nid);
        }
    op=OBJ_bsearch_sn(&oo, sn_objs, NUM_SN);
    if (op == NULL) return(NID_undef);
    return(nid_objs[*op].nid);
    }

const void *OBJ_bsearch_(const void *key, const void *base, int num, int size,
             int (*cmp)(const void *, const void *))
    {
    return OBJ_bsearch_ex_(key, base, num, size, cmp, 0);
    }

const void *OBJ_bsearch_ex_(const void *key, const void *base_, int num,
                int size,
                int (*cmp)(const void *, const void *),
                int flags)
    {
    const char *base=base_;
    int l,h,i=0,c=0;
    const char *p = NULL;

    if (num == 0) return(NULL);
    l=0;
    h=num;
    while (l < h)
        {
        i=(l+h)/2;
        p= &(base[i*size]);
        c=(*cmp)(key,p);
        if (c < 0)
            h=i;
        else if (c > 0)
            l=i+1;
        else
            break;
        }
#ifdef CHARSET_EBCDIC
/* THIS IS A KLUDGE - Because the *_obj is sorted in ASCII order, and
 * I don't have perl (yet), we revert to a *LINEAR* search
 * when the object wasn't found in the binary search.
 */
    if (c != 0)
        {
        for (i=0; i<num; ++i)
            {
            p= &(base[i*size]);
            c = (*cmp)(key,p);
            if (c == 0 || (c < 0 && (flags & OBJ_BSEARCH_VALUE_ON_NOMATCH)))
                return p;
            }
        }
#endif
    if (c != 0 && !(flags & OBJ_BSEARCH_VALUE_ON_NOMATCH))
        p = NULL;
    else if (c == 0 && (flags & OBJ_BSEARCH_FIRST_VALUE_ON_MATCH))
        {
        while(i > 0 && (*cmp)(key,&(base[(i-1)*size])) == 0)
            i--;
        p = &(base[i*size]);
        }
    return(p);
    }

int OBJ_create_objects(BIO *in)
    {
    MS_STATIC char buf[512];
    int i,num=0;
    char *o,*s,*l=NULL;

    for (;;)
        {
        s=o=NULL;
        i=BIO_gets(in,buf,512);
        if (i <= 0) return(num);
        buf[i-1]='\0';
        if (!isalnum((unsigned char)buf[0])) return(num);
        o=s=buf;
        while (isdigit((unsigned char)*s) || (*s == '.'))
            s++;
        if (*s != '\0')
            {
            *(s++)='\0';
            while (isspace((unsigned char)*s))
                s++;
            if (*s == '\0')
                s=NULL;
            else
                {
                l=s;
                while ((*l != '\0') && !isspace((unsigned char)*l))
                    l++;
                if (*l != '\0')
                    {
                    *(l++)='\0';
                    while (isspace((unsigned char)*l))
                        l++;
                    if (*l == '\0') l=NULL;
                    }
                else
                    l=NULL;
                }
            }
        else
            s=NULL;
        if ((o == NULL) || (*o == '\0')) return(num);
        if (!OBJ_create(o,s,l)) return(num);
        num++;
        }
    /* return(num); */
    }

int OBJ_create(const char *oid, const char *sn, const char *ln)
    {
    int ok=0;
    ASN1_OBJECT *op=NULL;
    unsigned char *buf;
    int i;

    i=a2d_ASN1_OBJECT(NULL,0,oid,-1);
    if (i <= 0) return(0);

    if ((buf=(unsigned char *)OPENSSL_malloc(i)) == NULL)
        {
        OBJerr(OBJ_F_OBJ_CREATE,ERR_R_MALLOC_FAILURE);
        return(0);
        }
    i=a2d_ASN1_OBJECT(buf,i,oid,-1);
    if (i == 0)
        goto err;
    op=(ASN1_OBJECT *)ASN1_OBJECT_create(OBJ_new_nid(1),buf,i,sn,ln);
    if (op == NULL) 
        goto err;
    ok=OBJ_add_object(op);
err:
    ASN1_OBJECT_free(op);
    OPENSSL_free(buf);
    return(ok);
    }