1 | /*
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2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include <stdio.h>
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11 | #include "internal/cryptlib.h"
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12 | #include <openssl/lhash.h>
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13 | #include <openssl/objects.h>
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14 | #include <openssl/buffer.h>
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15 | #include "internal/asn1_int.h"
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16 |
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17 | ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
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18 | {
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19 | ASN1_OBJECT *r;
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20 |
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21 | if (o == NULL)
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22 | return NULL;
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23 | /* If object isn't dynamic it's an internal OID which is never freed */
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24 | if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
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25 | return ((ASN1_OBJECT *)o);
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26 |
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27 | r = ASN1_OBJECT_new();
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28 | if (r == NULL) {
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29 | OBJerr(OBJ_F_OBJ_DUP, ERR_R_ASN1_LIB);
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30 | return (NULL);
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31 | }
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32 |
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33 | /* Set dynamic flags so everything gets freed up on error */
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34 |
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35 | r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
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36 | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
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37 | ASN1_OBJECT_FLAG_DYNAMIC_DATA);
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38 |
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39 | if (o->length > 0 && (r->data = OPENSSL_memdup(o->data, o->length)) == NULL)
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40 | goto err;
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41 |
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42 | r->length = o->length;
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43 | r->nid = o->nid;
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44 |
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45 | if (o->ln != NULL && (r->ln = OPENSSL_strdup(o->ln)) == NULL)
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46 | goto err;
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47 |
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48 | if (o->sn != NULL && (r->sn = OPENSSL_strdup(o->sn)) == NULL)
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49 | goto err;
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50 |
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51 | return r;
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52 | err:
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53 | ASN1_OBJECT_free(r);
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54 | OBJerr(OBJ_F_OBJ_DUP, ERR_R_MALLOC_FAILURE);
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55 | return NULL;
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56 | }
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57 |
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58 | int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
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59 | {
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60 | int ret;
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61 |
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62 | ret = (a->length - b->length);
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63 | if (ret)
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64 | return (ret);
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65 | return (memcmp(a->data, b->data, a->length));
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66 | }
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