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openssl/crypto/objects/obj_dat.c

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/*
* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "crypto/ctype.h"
#include <limits.h>
#include "internal/cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/asn1.h>
#include "crypto/objects.h"
#include <openssl/bn.h>
#include "crypto/asn1.h"
#include "obj_local.h"
/* obj_dat.h is generated from objects.h by obj_dat.pl */
#include "obj_dat.h"
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
struct added_obj_st {
int type;
ASN1_OBJECT *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 = OPENSSL_LH_strhash(a->sn);
break;
case ADDED_LNAME:
ret = OPENSSL_LH_strhash(a->ln);
break;
case ADDED_NID:
ret = a->nid;
break;
default:
/* abort(); */
return 0;
}
ret &= 0x3fffffffL;
ret |= ((unsigned long)ca->type) << 30L;
return ret;
}
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 int init_added(void)
{
if (added != NULL)
return 1;
added = lh_ADDED_OBJ_new(added_obj_hash, added_obj_cmp);
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);
}
void obj_cleanup_int(void)
{
if (added == NULL)
return;
lh_ADDED_OBJ_set_down_load(added, 0);
lh_ADDED_OBJ_doall(added, cleanup1_doall); /* zero counters */
lh_ADDED_OBJ_doall(added, cleanup2_doall); /* set counters */
lh_ADDED_OBJ_doall(added, cleanup3_doall); /* 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] = OPENSSL_malloc(sizeof(*ao[0]))) == NULL)
goto err2;
if ((o->length != 0) && (obj->data != NULL))
if ((ao[ADDED_DATA] = OPENSSL_malloc(sizeof(*ao[0]))) == NULL)
goto err2;
if (o->sn != NULL)
if ((ao[ADDED_SNAME] = OPENSSL_malloc(sizeof(*ao[0]))) == NULL)
goto err2;
if (o->ln != NULL)
if ((ao[ADDED_LNAME] = OPENSSL_malloc(sizeof(*ao[0]))) == NULL)
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, but should not normally matter */
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++)
OPENSSL_free(ao[i]);
ASN1_OBJECT_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) {
OBJerr(OBJ_F_OBJ_NID2OBJ, OBJ_R_UNKNOWN_NID);
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;
if (a->length == 0)
return 0;
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 (a->length == 0)
return NID_undef;
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;
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 (j < 0)
return NULL;
if ((buf = OPENSSL_malloc(j)) == NULL) {
OBJerr(OBJ_F_OBJ_TXT2OBJ, ERR_R_MALLOC_FAILURE);
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];
/* Ensure that, at every state, |buf| is NUL-terminated. */
if (buf && buf_len > 0)
buf[0] = '\0';
if ((a == NULL) || (a->data == NULL))
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)
OPENSSL_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 == NULL && (bl = BN_new()) == NULL)
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 > 1)) {
*buf++ = i + '0';
*buf = '\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 > 1) {
*buf++ = '.';
*buf = '\0';
buf_len--;
}
OPENSSL_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)) {
OPENSSL_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;
}
}
BN_free(bl);
return n;
err:
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;
}
/*
* Parse a BIO sink to create some extra oid's objects.
* Line format:<OID:isdigit or '.']><isspace><SN><isspace><LN>
*/
int OBJ_create_objects(BIO *in)
{
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 (!ossl_isalnum(buf[0]))
return num;
o = s = buf;
while (ossl_isdigit(*s) || *s == '.')
s++;
if (*s != '\0') {
*(s++) = '\0';
while (ossl_isspace(*s))
s++;
if (*s == '\0') {
s = NULL;
} else {
l = s;
while (*l != '\0' && !ossl_isspace(*l))
l++;
if (*l != '\0') {
*(l++) = '\0';
while (ossl_isspace(*l))
l++;
if (*l == '\0') {
l = NULL;
}
} else {
l = NULL;
}
}
} else {
s = NULL;
}
if (*o == '\0')
return num;
if (!OBJ_create(o, s, l))
return num;
num++;
}
}
int OBJ_create(const char *oid, const char *sn, const char *ln)
{
ASN1_OBJECT *tmpoid = NULL;
int ok = 0;
/* Check to see if short or long name already present */
if ((sn != NULL && OBJ_sn2nid(sn) != NID_undef)
|| (ln != NULL && OBJ_ln2nid(ln) != NID_undef)) {
OBJerr(OBJ_F_OBJ_CREATE, OBJ_R_OID_EXISTS);
return 0;
}
/* Convert numerical OID string to an ASN1_OBJECT structure */
tmpoid = OBJ_txt2obj(oid, 1);
if (tmpoid == NULL)
return 0;
/* If NID is not NID_undef then object already exists */
if (OBJ_obj2nid(tmpoid) != NID_undef) {
OBJerr(OBJ_F_OBJ_CREATE, OBJ_R_OID_EXISTS);
goto err;
}
tmpoid->nid = OBJ_new_nid(1);
tmpoid->sn = (char *)sn;
tmpoid->ln = (char *)ln;
ok = OBJ_add_object(tmpoid);
tmpoid->sn = NULL;
tmpoid->ln = NULL;
err:
ASN1_OBJECT_free(tmpoid);
return ok;
}
size_t OBJ_length(const ASN1_OBJECT *obj)
{
if (obj == NULL)
return 0;
return obj->length;
}
const unsigned char *OBJ_get0_data(const ASN1_OBJECT *obj)
{
if (obj == NULL)
return NULL;
return obj->data;
}
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