/*
* Copyright 1995-2018 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 "internal/cryptlib.h"
#include <openssl/safestack.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include "crypto/x509.h"
int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
{
ASN1_OBJECT *obj;
obj = OBJ_nid2obj(nid);
if (obj == NULL)
return -1;
return X509_NAME_get_text_by_OBJ(name, obj, buf, len);
}
int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
char *buf, int len)
{
int i;
const ASN1_STRING *data;
i = X509_NAME_get_index_by_OBJ(name, obj, -1);
if (i < 0)
return -1;
data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
if (buf == NULL)
return data->length;
if (len <= 0)
return 0;
i = (data->length > (len - 1)) ? (len - 1) : data->length;
memcpy(buf, data->data, i);
buf[i] = '\0';
return i;
}
int X509_NAME_entry_count(const X509_NAME *name)
{
if (name == NULL)
return 0;
return sk_X509_NAME_ENTRY_num(name->entries);
}
int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
{
ASN1_OBJECT *obj;
obj = OBJ_nid2obj(nid);
if (obj == NULL)
return -2;
return X509_NAME_get_index_by_OBJ(name, obj, lastpos);
}
/* NOTE: you should be passing -1, not 0 as lastpos */
int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int lastpos)
{
int n;
X509_NAME_ENTRY *ne;
STACK_OF(X509_NAME_ENTRY) *sk;
if (name == NULL)
return -1;
if (lastpos < 0)
lastpos = -1;
sk = name->entries;
n = sk_X509_NAME_ENTRY_num(sk);
for (lastpos++; lastpos < n; lastpos++) {
ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
if (OBJ_cmp(ne->object, obj) == 0)
return lastpos;
}
return -1;
}
X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc)
{
if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
|| loc < 0)
return NULL;
return sk_X509_NAME_ENTRY_value(name->entries, loc);
}
X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
{
X509_NAME_ENTRY *ret;
int i, n, set_prev, set_next;
STACK_OF(X509_NAME_ENTRY) *sk;
if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
|| loc < 0)
return NULL;
sk = name->entries;
ret = sk_X509_NAME_ENTRY_delete(sk, loc);
n = sk_X509_NAME_ENTRY_num(sk);
name->modified = 1;
if (loc == n)
return ret;
/* else we need to fixup the set field */
if (loc != 0)
set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
else
set_prev = ret->set - 1;
set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
/*-
* set_prev is the previous set
* set is the current set
* set_next is the following
* prev 1 1 1 1 1 1 1 1
* set 1 1 2 2
* next 1 1 2 2 2 2 3 2
* so basically only if prev and next differ by 2, then
* re-number down by 1
*/
if (set_prev + 1 < set_next)
for (i = loc; i < n; i++)
sk_X509_NAME_ENTRY_value(sk, i)->set--;
return ret;
}
int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int type,
const unsigned char *bytes, int len, int loc,
int set)
{
X509_NAME_ENTRY *ne;
int ret;
ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
if (!ne)
return 0;
ret = X509_NAME_add_entry(name, ne, loc, set);
X509_NAME_ENTRY_free(ne);
return ret;
}
int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
const unsigned char *bytes, int len, int loc,
int set)
{
X509_NAME_ENTRY *ne;
int ret;
ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
if (!ne)
return 0;
ret = X509_NAME_add_entry(name, ne, loc, set);
X509_NAME_ENTRY_free(ne);
return ret;
}
int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
const unsigned char *bytes, int len, int loc,
int set)
{
X509_NAME_ENTRY *ne;
int ret;
ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
if (!ne)
return 0;
ret = X509_NAME_add_entry(name, ne, loc, set);
X509_NAME_ENTRY_free(ne);
return ret;
}
/*
* if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
* guy we are about to stomp on.
*/
int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *ne, int loc,
int set)
{
X509_NAME_ENTRY *new_name = NULL;
int n, i, inc;
STACK_OF(X509_NAME_ENTRY) *sk;
if (name == NULL)
return 0;
sk = name->entries;
n = sk_X509_NAME_ENTRY_num(sk);
if (loc > n)
loc = n;
else if (loc < 0)
loc = n;
inc = (set == 0);
name->modified = 1;
if (set == -1) {
if (loc == 0) {
set = 0;
inc = 1;
} else {
set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
}
} else { /* if (set >= 0) */
if (loc >= n) {
if (loc != 0)
set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
else
set = 0;
} else
set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
}
/*
* X509_NAME_ENTRY_dup is ASN1 generated code, that can't be easily
* const'ified; harmless cast since dup() don't modify its input.
*/
if ((new_name = X509_NAME_ENTRY_dup((X509_NAME_ENTRY *)ne)) == NULL)
goto err;
new_name->set = set;
if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
X509err(X509_F_X509_NAME_ADD_ENTRY, ERR_R_MALLOC_FAILURE);
goto err;
}
if (inc) {
n = sk_X509_NAME_ENTRY_num(sk);
for (i = loc + 1; i < n; i++)
sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
}
return 1;
err:
X509_NAME_ENTRY_free(new_name);
return 0;
}
X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
const char *field, int type,
const unsigned char *bytes,
int len)
{
ASN1_OBJECT *obj;
X509_NAME_ENTRY *nentry;
obj = OBJ_txt2obj(field, 0);
if (obj == NULL) {
X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
X509_R_INVALID_FIELD_NAME);
ERR_add_error_data(2, "name=", field);
return NULL;
}
nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
ASN1_OBJECT_free(obj);
return nentry;
}
X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
int type,
const unsigned char *bytes,
int len)
{
ASN1_OBJECT *obj;
X509_NAME_ENTRY *nentry;
obj = OBJ_nid2obj(nid);
if (obj == NULL) {
X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID, X509_R_UNKNOWN_NID);
return NULL;
}
nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
ASN1_OBJECT_free(obj);
return nentry;
}
X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
const ASN1_OBJECT *obj, int type,
const unsigned char *bytes,
int len)
{
X509_NAME_ENTRY *ret;
if ((ne == NULL) || (*ne == NULL)) {
if ((ret = X509_NAME_ENTRY_new()) == NULL)
return NULL;
} else
ret = *ne;
if (!X509_NAME_ENTRY_set_object(ret, obj))
goto err;
if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
goto err;
if ((ne != NULL) && (*ne == NULL))
*ne = ret;
return ret;
err:
if ((ne == NULL) || (ret != *ne))
X509_NAME_ENTRY_free(ret);
return NULL;
}
int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
{
if ((ne == NULL) || (obj == NULL)) {
X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,
ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
ASN1_OBJECT_free(ne->object);
ne->object = OBJ_dup(obj);
return ((ne->object == NULL) ? 0 : 1);
}
int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
const unsigned char *bytes, int len)
{
int i;
if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
return 0;
if ((type > 0) && (type & MBSTRING_FLAG))
return ASN1_STRING_set_by_NID(&ne->value, bytes,
len, type,
OBJ_obj2nid(ne->object)) ? 1 : 0;
if (len < 0)
len = strlen((const char *)bytes);
i = ASN1_STRING_set(ne->value, bytes, len);
if (!i)
return 0;
if (type != V_ASN1_UNDEF) {
if (type == V_ASN1_APP_CHOOSE)
ne->value->type = ASN1_PRINTABLE_type(bytes, len);
else
ne->value->type = type;
}
return 1;
}
ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
{
if (ne == NULL)
return NULL;
return ne->object;
}
ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
{
if (ne == NULL)
return NULL;
return ne->value;
}
int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
{
return ne->set;
}