--- /dev/null
+/* 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.] */
+
+#if !defined(__STDC_FORMAT_MACROS)
+#define __STDC_FORMAT_MACROS
+#endif
+
+#include <openssl/obj.h>
+
+#include <inttypes.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_write(&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, 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) {
+ OPENSSL_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, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(ln);
+ OPENSSL_free(sn);
+ 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 OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj) {
+ if (obj == NULL) {
+ return NULL;
+ }
+
+ return obj->data;
+}
+
+size_t OBJ_length(const ASN1_OBJECT *obj) {
+ if (obj == NULL || obj->length < 0) {
+ return 0;
+ }
+
+ return (size_t)obj->length;
+}
+
+// obj_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) {
+ unsigned nid = *((const unsigned*) element);
+ const ASN1_OBJECT *a = key;
+ const ASN1_OBJECT *b = &kObjects[nid];
+
+ if (a->length < b->length) {
+ return -1;
+ } else if (a->length > b->length) {
+ return 1;
+ }
+ return OPENSSL_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_read(&global_added_lock);
+ return match->nid;
+ }
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+ nid_ptr = bsearch(obj, kNIDsInOIDOrder, OPENSSL_ARRAY_SIZE(kNIDsInOIDOrder),
+ sizeof(kNIDsInOIDOrder[0]), obj_cmp);
+ if (nid_ptr == NULL) {
+ return NID_undef;
+ }
+
+ return kObjects[*nid_ptr].nid;
+}
+
+int OBJ_cbs2nid(const CBS *cbs) {
+ if (CBS_len(cbs) > INT_MAX) {
+ return NID_undef;
+ }
+
+ ASN1_OBJECT obj;
+ OPENSSL_memset(&obj, 0, sizeof(obj));
+ obj.data = CBS_data(cbs);
+ obj.length = (int)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_read(&global_added_lock);
+ return match->nid;
+ }
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+ nid_ptr = bsearch(short_name, kNIDsInShortNameOrder,
+ OPENSSL_ARRAY_SIZE(kNIDsInShortNameOrder),
+ sizeof(kNIDsInShortNameOrder[0]), 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_read(&global_added_lock);
+ return match->nid;
+ }
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+ nid_ptr = bsearch(long_name, kNIDsInLongNameOrder,
+ OPENSSL_ARRAY_SIZE(kNIDsInLongNameOrder),
+ sizeof(kNIDsInLongNameOrder[0]), 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_read(&global_added_lock);
+ return match;
+ }
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+err:
+ OPENSSL_PUT_ERROR(OBJ, 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;
+}
+
+static ASN1_OBJECT *create_object_with_text_oid(int (*get_nid)(void),
+ const char *oid,
+ const char *short_name,
+ const char *long_name) {
+ uint8_t *buf;
+ size_t len;
+ CBB cbb;
+ if (!CBB_init(&cbb, 32) ||
+ !CBB_add_asn1_oid_from_text(&cbb, oid, strlen(oid)) ||
+ !CBB_finish(&cbb, &buf, &len)) {
+ OPENSSL_PUT_ERROR(OBJ, OBJ_R_INVALID_OID_STRING);
+ CBB_cleanup(&cbb);
+ return NULL;
+ }
+
+ ASN1_OBJECT *ret = ASN1_OBJECT_create(get_nid ? get_nid() : NID_undef, buf,
+ len, short_name, long_name);
+ OPENSSL_free(buf);
+ return ret;
+}
+
+ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names) {
+ if (!dont_search_names) {
+ int nid = OBJ_sn2nid(s);
+ if (nid == NID_undef) {
+ nid = OBJ_ln2nid(s);
+ }
+
+ if (nid != NID_undef) {
+ return (ASN1_OBJECT*) OBJ_nid2obj(nid);
+ }
+ }
+
+ return create_object_with_text_oid(NULL, s, NULL, NULL);
+}
+
+static int strlcpy_int(char *dst, const char *src, int dst_size) {
+ size_t ret = BUF_strlcpy(dst, src, dst_size < 0 ? 0 : (size_t)dst_size);
+ if (ret > INT_MAX) {
+ OPENSSL_PUT_ERROR(OBJ, ERR_R_OVERFLOW);
+ return -1;
+ }
+ return (int)ret;
+}
+
+int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+ int always_return_oid) {
+ // Python depends on the empty OID successfully encoding as the empty
+ // string.
+ if (obj == NULL || obj->length == 0) {
+ return strlcpy_int(out, "", out_len);
+ }
+
+ if (!always_return_oid) {
+ int nid = OBJ_obj2nid(obj);
+ if (nid != NID_undef) {
+ const char *name = OBJ_nid2ln(nid);
+ if (name == NULL) {
+ name = OBJ_nid2sn(nid);
+ }
+ if (name != NULL) {
+ return strlcpy_int(out, name, out_len);
+ }
+ }
+ }
+
+ CBS cbs;
+ CBS_init(&cbs, obj->data, obj->length);
+ char *txt = CBS_asn1_oid_to_text(&cbs);
+ if (txt == NULL) {
+ if (out_len > 0) {
+ out[0] = '\0';
+ }
+ return -1;
+ }
+
+ int ret = strlcpy_int(out, txt, out_len);
+ OPENSSL_free(txt);
+ return ret;
+}
+
+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 OPENSSL_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_write(&global_added_lock);
+
+ return ok;
+}
+
+int OBJ_create(const char *oid, const char *short_name, const char *long_name) {
+ ASN1_OBJECT *op =
+ create_object_with_text_oid(obj_next_nid, oid, short_name, long_name);
+ if (op == NULL ||
+ !obj_add_object(op)) {
+ return NID_undef;
+ }
+ return op->nid;
+}
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