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obj_lib.c 1.6 KB

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  1. /*
  2. * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  3. *
  4. * Licensed under the Apache License 2.0 (the "License"). You may not use
  5. * this file except in compliance with the License. You can obtain a copy
  6. * in the file LICENSE in the source distribution or at
  7. * https://www.openssl.org/source/license.html
  8. */
  9. #include <stdio.h>
  10. #include "internal/cryptlib.h"
  11. #include <openssl/objects.h>
  12. #include <openssl/buffer.h>
  13. #include "crypto/asn1.h"
  14. ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
  15. {
  16. ASN1_OBJECT *r;
  17. if (o == NULL)
  18. return NULL;
  19. /* If object isn't dynamic it's an internal OID which is never freed */
  20. if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC))
  21. return (ASN1_OBJECT *)o;
  22. r = ASN1_OBJECT_new();
  23. if (r == NULL) {
  24. ERR_raise(ERR_LIB_OBJ, ERR_R_ASN1_LIB);
  25. return NULL;
  26. }
  27. /* Set dynamic flags so everything gets freed up on error */
  28. r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC |
  29. ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
  30. ASN1_OBJECT_FLAG_DYNAMIC_DATA);
  31. if (o->length > 0 && (r->data = OPENSSL_memdup(o->data, o->length)) == NULL)
  32. goto err;
  33. r->length = o->length;
  34. r->nid = o->nid;
  35. if (o->ln != NULL && (r->ln = OPENSSL_strdup(o->ln)) == NULL)
  36. goto err;
  37. if (o->sn != NULL && (r->sn = OPENSSL_strdup(o->sn)) == NULL)
  38. goto err;
  39. return r;
  40. err:
  41. ASN1_OBJECT_free(r);
  42. return NULL;
  43. }
  44. int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b)
  45. {
  46. int ret;
  47. ret = (a->length - b->length);
  48. if (ret)
  49. return ret;
  50. return memcmp(a->data, b->data, a->length);
  51. }