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/*
* 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 "internal/x509_int.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));
i = (data->length > (len - 1)) ? (len - 1) : data->length;
if (buf == NULL)
return 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(
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