Add an extended variant of OBJ_bsearch() that can be given a few

[thirdparty/openssl.git] / crypto / objects / obj_dat.c

/* crypto/objects/obj_dat.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <ctype.h>
#include "cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/asn1.h>
#include <openssl/objects.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 unsigned char lvalues[1];
static ASN1_OBJECT nid_objs[1];
static ASN1_OBJECT *sn_objs[1];
static ASN1_OBJECT *ln_objs[1];
static ASN1_OBJECT *obj_objs[1];
#endif

static int sn_cmp(const void *a, const void *b);
static int ln_cmp(const void *a, const void *b);
static int obj_cmp(const void *a, const void *b);
#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;

static int new_nid=NUM_NID;
static LHASH *added=NULL;

static int sn_cmp(const void *a, const void *b)
        {
        const ASN1_OBJECT * const *ap = a, * const *bp = b;
        return(strcmp((*ap)->sn,(*bp)->sn));
        }

static int ln_cmp(const void *a, const void *b)
        { 
        const ASN1_OBJECT * const *ap = a, * const *bp = b;
        return(strcmp((*ap)->ln,(*bp)->ln));
        }

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

        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 int add_cmp(ADDED_OBJ *ca, ADDED_OBJ *cb) */
static int add_cmp(const void *ca_void, const void *cb_void)
        {
        ASN1_OBJECT *a,*b;
        int i;
        ADDED_OBJ *ca = (ADDED_OBJ *)ca_void;
        ADDED_OBJ *cb = (ADDED_OBJ *)cb_void;

        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,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 int init_added(void)
        {
        if (added != NULL) return(1);
        added=lh_new(add_hash,add_cmp);
        return(added != NULL);
        }

static void cleanup1(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(ADDED_OBJ *a)
        { a->obj->nid++; }

static void cleanup3(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 *)

void OBJ_cleanup(void)
        {
        if (added == NULL) return;
        added->down_load=0;
        lh_doall(added,LHASH_DOALL_FN(cleanup1)); /* zero counters */
        lh_doall(added,LHASH_DOALL_FN(cleanup2)); /* set counters */
        lh_doall(added,LHASH_DOALL_FN(cleanup3)); /* free objects */
        lh_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 err;
        if ((o->length != 0) && (obj->data != NULL))
                ao[ADDED_DATA]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ));
        if (o->sn != NULL)
                ao[ADDED_SNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ));
        if (o->ln != NULL)
                ao[ADDED_LNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ));

        for (i=ADDED_DATA; i<=ADDED_NID; i++)
                {
                if (ao[i] != NULL)
                        {
                        ao[i]->type=i;
                        ao[i]->obj=o;
                        aop=(ADDED_OBJ *)lh_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);
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=(ADDED_OBJ *)lh_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=(ADDED_OBJ *)lh_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=(ADDED_OBJ *)lh_retrieve(added,&ad);
                if (adp != NULL)
                        return(adp->obj->ln);
                else
                        {
                        OBJerr(OBJ_F_OBJ_NID2LN,OBJ_R_UNKNOWN_NID);
                        return(NULL);
                        }
                }
        }

int OBJ_obj2nid(const ASN1_OBJECT *a)
        {
        ASN1_OBJECT **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=(ADDED_OBJ *)lh_retrieve(added,&ad);
                if (adp != NULL) return (adp->obj->nid);
                }
        op=(ASN1_OBJECT **)OBJ_bsearch((char *)&a,(char *)obj_objs,NUM_OBJ,
                sizeof(ASN1_OBJECT *),obj_cmp);
        if (op == NULL)
                return(NID_undef);
        return((*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,*p;
        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) {
                /* Clear the error */
                ERR_get_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);
        
        p=buf;
        op=d2i_ASN1_OBJECT(NULL,&p,j);
        OPENSSL_free(buf);
        return op;
        }

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

        if (buf_len <= 0) return(0);

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

        if (no_name || (nid=OBJ_obj2nid(a)) == NID_undef) {
                len=a->length;
                p=a->data;

                idx=0;
                l=0;
                while (idx < a->length) {
                        l|=(p[idx]&0x7f);
                        if (!(p[idx] & 0x80)) break;
                        l<<=7L;
                        idx++;
                }
                idx++;
                i=(int)(l/40);
                if (i > 2) i=2;
                l-=(long)(i*40);

                sprintf(tbuf,"%d.%lu",i,l);
                i=strlen(tbuf);
                BUF_strlcpy(buf,tbuf,buf_len);
                buf_len-=i;
                buf+=i;
                n+=i;

                l=0;
                for (; idx<len; idx++) {
                        l|=p[idx]&0x7f;
                        if (!(p[idx] & 0x80)) {
                                sprintf(tbuf,".%lu",l);
                                i=strlen(tbuf);
                                if (buf_len > 0)
                                        BUF_strlcpy(buf,tbuf,buf_len);
                                buf_len-=i;
                                buf+=i;
                                n+=i;
                                l=0;
                        }
                        l<<=7L;
                }
        } else {
                s=OBJ_nid2ln(nid);
                if (s == NULL)
                        s=OBJ_nid2sn(nid);
                BUF_strlcpy(buf,s,buf_len);
                n=strlen(s);
        }
        return(n);
}

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,*oo= &o,**op;
        ADDED_OBJ ad,*adp;

        o.ln=s;
        if (added != NULL)
                {
                ad.type=ADDED_LNAME;
                ad.obj= &o;
                adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
                if (adp != NULL) return (adp->obj->nid);
                }
        op=(ASN1_OBJECT **)OBJ_bsearch((char *)&oo,(char *)ln_objs,NUM_LN,
                sizeof(ASN1_OBJECT *),ln_cmp);
        if (op == NULL) return(NID_undef);
        return((*op)->nid);
        }

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

        o.sn=s;
        if (added != NULL)
                {
                ad.type=ADDED_SNAME;
                ad.obj= &o;
                adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
                if (adp != NULL) return (adp->obj->nid);
                }
        op=(ASN1_OBJECT **)OBJ_bsearch((char *)&oo,(char *)sn_objs,NUM_SN,
                sizeof(ASN1_OBJECT *),sn_cmp);
        if (op == NULL) return(NID_undef);
        return((*op)->nid);
        }

static int obj_cmp(const void *ap, const void *bp)
        {
        int j;
        ASN1_OBJECT *a= *(ASN1_OBJECT **)ap;
        ASN1_OBJECT *b= *(ASN1_OBJECT **)bp;

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

const char *OBJ_bsearch(const char *key, const char *base, int num, int size,
        int (*cmp)(const void *, const void *))
        {
        return OBJ_bsearch_ex(key, base, num, size, cmp, 0);
        }

const char *OBJ_bsearch_ex(const char *key, const char *base, int num,
        int size, int (*cmp)(const void *, const void *), int flags)
        {
        int l,h,i,c;
        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,OBJ_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);
        }