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- /* 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 <openssl/obj.h>
-
- #include <limits.h>
- #include <string.h>
-
- #include <openssl/asn1.h>
- #include <openssl/buf.h>
- #include <openssl/bytestring.h>
- #include <openssl/err.h>
- #include <openssl/lhash.h>
- #include <openssl/mem.h>
- #include <openssl/thread.h>
-
- #include "obj_dat.h"
- #include "../internal.h"
-
-
- static struct CRYPTO_STATIC_MUTEX global_added_lock = CRYPTO_STATIC_MUTEX_INIT;
- /* These globals are protected by |global_added_lock|. */
- static LHASH_OF(ASN1_OBJECT) *global_added_by_data = NULL;
- static LHASH_OF(ASN1_OBJECT) *global_added_by_nid = NULL;
- static LHASH_OF(ASN1_OBJECT) *global_added_by_short_name = NULL;
- static LHASH_OF(ASN1_OBJECT) *global_added_by_long_name = NULL;
-
- static struct CRYPTO_STATIC_MUTEX global_next_nid_lock =
- CRYPTO_STATIC_MUTEX_INIT;
- static unsigned global_next_nid = NUM_NID;
-
- static int obj_next_nid(void) {
- int ret;
-
- CRYPTO_STATIC_MUTEX_lock_write(&global_next_nid_lock);
- ret = global_next_nid++;
- CRYPTO_STATIC_MUTEX_unlock(&global_next_nid_lock);
-
- return ret;
- }
-
- ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o) {
- ASN1_OBJECT *r;
- unsigned char *data = NULL;
- char *sn = NULL, *ln = NULL;
-
- if (o == NULL) {
- return NULL;
- }
-
- if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
- /* TODO(fork): this is a little dangerous. */
- return (ASN1_OBJECT *)o;
- }
-
- r = ASN1_OBJECT_new();
- if (r == NULL) {
- OPENSSL_PUT_ERROR(OBJ, OBJ_dup, ERR_R_ASN1_LIB);
- return NULL;
- }
- r->ln = r->sn = NULL;
-
- data = OPENSSL_malloc(o->length);
- if (data == NULL) {
- goto err;
- }
- if (o->data != NULL) {
- memcpy(data, o->data, o->length);
- }
-
- /* once data is attached to an object, it remains const */
- r->data = data;
- r->length = o->length;
- r->nid = o->nid;
-
- if (o->ln != NULL) {
- ln = OPENSSL_strdup(o->ln);
- if (ln == NULL) {
- goto err;
- }
- }
-
- if (o->sn != NULL) {
- sn = OPENSSL_strdup(o->sn);
- if (sn == NULL) {
- goto err;
- }
- }
-
- r->sn = sn;
- r->ln = ln;
-
- r->flags =
- o->flags | (ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
- ASN1_OBJECT_FLAG_DYNAMIC_DATA);
- return r;
-
- err:
- OPENSSL_PUT_ERROR(OBJ, OBJ_dup, ERR_R_MALLOC_FAILURE);
- if (ln != NULL) {
- OPENSSL_free(ln);
- }
- if (sn != NULL) {
- OPENSSL_free(sn);
- }
- if (data != NULL) {
- OPENSSL_free(data);
- }
- OPENSSL_free(r);
- return NULL;
- }
-
- int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
- int ret;
-
- ret = a->length - b->length;
- if (ret) {
- return ret;
- }
- return memcmp(a->data, b->data, a->length);
- }
-
- /* nids_cmp is called to search the kNIDsInOIDOrder array. The |key| argument
- * is an |ASN1_OBJECT|* that we're looking for and |element| is a pointer to an
- * unsigned int in the array. */
- static int obj_cmp(const void *key, const void *element) {
- int j;
- unsigned nid = *((unsigned*) element);
- const ASN1_OBJECT *a = key;
- const ASN1_OBJECT *b = &kObjects[nid];
-
- j = a->length - b->length;
- if (j) {
- return j;
- }
- return memcmp(a->data, b->data, a->length);
- }
-
- int OBJ_obj2nid(const ASN1_OBJECT *obj) {
- const unsigned int *nid_ptr;
-
- if (obj == NULL) {
- return NID_undef;
- }
-
- if (obj->nid != 0) {
- return obj->nid;
- }
-
- CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
- if (global_added_by_data != NULL) {
- ASN1_OBJECT *match;
-
- match = lh_ASN1_OBJECT_retrieve(global_added_by_data, obj);
- if (match != NULL) {
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
- return match->nid;
- }
- }
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
-
- nid_ptr = bsearch(obj, kNIDsInOIDOrder, NUM_OBJ, sizeof(unsigned), obj_cmp);
- if (nid_ptr == NULL) {
- return NID_undef;
- }
-
- return kObjects[*nid_ptr].nid;
- }
-
- int OBJ_cbs2nid(const CBS *cbs) {
- ASN1_OBJECT obj;
- memset(&obj, 0, sizeof(obj));
- obj.data = CBS_data(cbs);
- obj.length = CBS_len(cbs);
-
- return OBJ_obj2nid(&obj);
- }
-
- /* short_name_cmp is called to search the kNIDsInShortNameOrder array. The
- * |key| argument is name that we're looking for and |element| is a pointer to
- * an unsigned int in the array. */
- static int short_name_cmp(const void *key, const void *element) {
- const char *name = (const char *) key;
- unsigned nid = *((unsigned*) element);
-
- return strcmp(name, kObjects[nid].sn);
- }
-
- int OBJ_sn2nid(const char *short_name) {
- const unsigned int *nid_ptr;
-
- CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
- if (global_added_by_short_name != NULL) {
- ASN1_OBJECT *match, template;
-
- template.sn = short_name;
- match = lh_ASN1_OBJECT_retrieve(global_added_by_short_name, &template);
- if (match != NULL) {
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
- return match->nid;
- }
- }
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
-
- nid_ptr = bsearch(short_name, kNIDsInShortNameOrder, NUM_SN, sizeof(unsigned), short_name_cmp);
- if (nid_ptr == NULL) {
- return NID_undef;
- }
-
- return kObjects[*nid_ptr].nid;
- }
-
- /* long_name_cmp is called to search the kNIDsInLongNameOrder array. The
- * |key| argument is name that we're looking for and |element| is a pointer to
- * an unsigned int in the array. */
- static int long_name_cmp(const void *key, const void *element) {
- const char *name = (const char *) key;
- unsigned nid = *((unsigned*) element);
-
- return strcmp(name, kObjects[nid].ln);
- }
-
- int OBJ_ln2nid(const char *long_name) {
- const unsigned int *nid_ptr;
-
- CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
- if (global_added_by_long_name != NULL) {
- ASN1_OBJECT *match, template;
-
- template.ln = long_name;
- match = lh_ASN1_OBJECT_retrieve(global_added_by_long_name, &template);
- if (match != NULL) {
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
- return match->nid;
- }
- }
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
-
- nid_ptr = bsearch(long_name, kNIDsInLongNameOrder, NUM_LN, sizeof(unsigned), long_name_cmp);
- if (nid_ptr == NULL) {
- return NID_undef;
- }
-
- return kObjects[*nid_ptr].nid;
- }
-
- int OBJ_txt2nid(const char *s) {
- ASN1_OBJECT *obj;
- int nid;
-
- obj = OBJ_txt2obj(s, 0 /* search names */);
- nid = OBJ_obj2nid(obj);
- ASN1_OBJECT_free(obj);
- return nid;
- }
-
- OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid) {
- const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
- CBB oid;
-
- if (obj == NULL ||
- !CBB_add_asn1(out, &oid, CBS_ASN1_OBJECT) ||
- !CBB_add_bytes(&oid, obj->data, obj->length) ||
- !CBB_flush(out)) {
- return 0;
- }
-
- return 1;
- }
-
- const ASN1_OBJECT *OBJ_nid2obj(int nid) {
- if (nid >= 0 && nid < NUM_NID) {
- if (nid != NID_undef && kObjects[nid].nid == NID_undef) {
- goto err;
- }
- return &kObjects[nid];
- }
-
- CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
- if (global_added_by_nid != NULL) {
- ASN1_OBJECT *match, template;
-
- template.nid = nid;
- match = lh_ASN1_OBJECT_retrieve(global_added_by_nid, &template);
- if (match != NULL) {
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
- return match;
- }
- }
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
-
- err:
- OPENSSL_PUT_ERROR(OBJ, OBJ_nid2obj, OBJ_R_UNKNOWN_NID);
- return NULL;
- }
-
- const char *OBJ_nid2sn(int nid) {
- const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
- if (obj == NULL) {
- return NULL;
- }
-
- return obj->sn;
- }
-
- const char *OBJ_nid2ln(int nid) {
- const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
- if (obj == NULL) {
- return NULL;
- }
-
- return obj->ln;
- }
-
- ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names) {
- int nid = NID_undef;
- ASN1_OBJECT *op = NULL;
- unsigned char *buf;
- unsigned char *p;
- const unsigned char *bufp;
- int contents_len, total_len;
-
- if (!dont_search_names) {
- nid = OBJ_sn2nid(s);
- if (nid == NID_undef) {
- nid = OBJ_ln2nid(s);
- }
-
- if (nid != NID_undef) {
- return (ASN1_OBJECT*) OBJ_nid2obj(nid);
- }
- }
-
- /* Work out size of content octets */
- contents_len = a2d_ASN1_OBJECT(NULL, 0, s, -1);
- if (contents_len <= 0) {
- return NULL;
- }
- /* Work out total size */
- total_len = ASN1_object_size(0, contents_len, V_ASN1_OBJECT);
-
- buf = OPENSSL_malloc(total_len);
- if (buf == NULL) {
- OPENSSL_PUT_ERROR(OBJ, OBJ_txt2obj, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- p = buf;
- /* Write out tag+length */
- ASN1_put_object(&p, 0, contents_len, V_ASN1_OBJECT, V_ASN1_UNIVERSAL);
- /* Write out contents */
- a2d_ASN1_OBJECT(p, contents_len, s, -1);
-
- bufp = buf;
- op = d2i_ASN1_OBJECT(NULL, &bufp, total_len);
- OPENSSL_free(buf);
-
- return op;
- }
-
- int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj, int dont_return_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 (out && out_len > 0) {
- out[0] = 0;
- }
-
- if (obj == NULL || obj->data == NULL) {
- return 0;
- }
-
- if (!dont_return_name && (nid = OBJ_obj2nid(obj)) != NID_undef) {
- const char *s;
- s = OBJ_nid2ln(nid);
- if (s == NULL) {
- s = OBJ_nid2sn(nid);
- }
- if (s) {
- if (out) {
- BUF_strlcpy(out, s, out_len);
- }
- return strlen(s);
- }
- }
-
- len = obj->length;
- p = obj->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 (out && out_len > 1) {
- *out++ = i + '0';
- *out = '0';
- out_len--;
- }
- n++;
- }
-
- if (use_bn) {
- char *bndec;
- bndec = BN_bn2dec(bl);
- if (!bndec) {
- goto err;
- }
- i = strlen(bndec);
- if (out) {
- if (out_len > 1) {
- *out++ = '.';
- *out = 0;
- out_len--;
- }
- BUF_strlcpy(out, bndec, out_len);
- if (i > out_len) {
- out += out_len;
- out_len = 0;
- } else {
- out += i;
- out_len -= i;
- }
- }
- n++;
- n += i;
- OPENSSL_free(bndec);
- } else {
- BIO_snprintf(tbuf, sizeof(tbuf), ".%lu", l);
- i = strlen(tbuf);
- if (out && out_len > 0) {
- BUF_strlcpy(out, tbuf, out_len);
- if (i > out_len) {
- out += out_len;
- out_len = 0;
- } else {
- out += i;
- out_len -= i;
- }
- }
- n += i;
- }
- }
-
- if (bl) {
- BN_free(bl);
- }
- return n;
-
- err:
- if (bl) {
- BN_free(bl);
- }
- return -1;
- }
-
- static uint32_t hash_nid(const ASN1_OBJECT *obj) {
- return obj->nid;
- }
-
- static int cmp_nid(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
- return a->nid - b->nid;
- }
-
- static uint32_t hash_data(const ASN1_OBJECT *obj) {
- return OPENSSL_hash32(obj->data, obj->length);
- }
-
- static int cmp_data(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
- int i = a->length - b->length;
- if (i) {
- return i;
- }
- return memcmp(a->data, b->data, a->length);
- }
-
- static uint32_t hash_short_name(const ASN1_OBJECT *obj) {
- return lh_strhash(obj->sn);
- }
-
- static int cmp_short_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
- return strcmp(a->sn, b->sn);
- }
-
- static uint32_t hash_long_name(const ASN1_OBJECT *obj) {
- return lh_strhash(obj->ln);
- }
-
- static int cmp_long_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
- return strcmp(a->ln, b->ln);
- }
-
- /* obj_add_object inserts |obj| into the various global hashes for run-time
- * added objects. It returns one on success or zero otherwise. */
- static int obj_add_object(ASN1_OBJECT *obj) {
- int ok;
- ASN1_OBJECT *old_object;
-
- obj->flags &= ~(ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
- ASN1_OBJECT_FLAG_DYNAMIC_DATA);
-
- CRYPTO_STATIC_MUTEX_lock_write(&global_added_lock);
- if (global_added_by_nid == NULL) {
- global_added_by_nid = lh_ASN1_OBJECT_new(hash_nid, cmp_nid);
- global_added_by_data = lh_ASN1_OBJECT_new(hash_data, cmp_data);
- global_added_by_short_name = lh_ASN1_OBJECT_new(hash_short_name, cmp_short_name);
- global_added_by_long_name = lh_ASN1_OBJECT_new(hash_long_name, cmp_long_name);
- }
-
- /* We don't pay attention to |old_object| (which contains any previous object
- * that was evicted from the hashes) because we don't have a reference count
- * on ASN1_OBJECT values. Also, we should never have duplicates nids and so
- * should always have objects in |global_added_by_nid|. */
-
- ok = lh_ASN1_OBJECT_insert(global_added_by_nid, &old_object, obj);
- if (obj->length != 0 && obj->data != NULL) {
- ok &= lh_ASN1_OBJECT_insert(global_added_by_data, &old_object, obj);
- }
- if (obj->sn != NULL) {
- ok &= lh_ASN1_OBJECT_insert(global_added_by_short_name, &old_object, obj);
- }
- if (obj->ln != NULL) {
- ok &= lh_ASN1_OBJECT_insert(global_added_by_long_name, &old_object, obj);
- }
- CRYPTO_STATIC_MUTEX_unlock(&global_added_lock);
-
- return ok;
- }
-
- int OBJ_create(const char *oid, const char *short_name, const char *long_name) {
- int ret = NID_undef;
- ASN1_OBJECT *op = NULL;
- unsigned char *buf = NULL;
- int len;
-
- len = a2d_ASN1_OBJECT(NULL, 0, oid, -1);
- if (len <= 0) {
- goto err;
- }
-
- buf = OPENSSL_malloc(len);
- if (buf == NULL) {
- OPENSSL_PUT_ERROR(OBJ, OBJ_create, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- len = a2d_ASN1_OBJECT(buf, len, oid, -1);
- if (len == 0) {
- goto err;
- }
-
- op = (ASN1_OBJECT *)ASN1_OBJECT_create(obj_next_nid(), buf, len, short_name,
- long_name);
- if (op == NULL) {
- goto err;
- }
-
- if (obj_add_object(op)) {
- ret = op->nid;
- }
- op = NULL;
-
- err:
- if (op != NULL) {
- ASN1_OBJECT_free(op);
- }
- if (buf != NULL) {
- OPENSSL_free(buf);
- }
-
- return ret;
- }
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