X509_add_cert.pod 2.3 KB

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  1. =pod
  2. =head1 NAME
  3. X509_add_cert,
  4. X509_add_certs -
  5. X509 certificate list addition functions
  6. =head1 SYNOPSIS
  7. #include <openssl/x509.h>
  8. int X509_add_cert(STACK_OF(X509) *sk, X509 *cert, int flags);
  9. int X509_add_certs(STACK_OF(X509) *sk, STACK_OF(X509) *certs, int flags);
  10. =head1 DESCRIPTION
  11. X509_add_cert() adds a certificate I<cert> to the given list I<sk>.
  12. X509_add_certs() adds a list of certificate I<certs> to the given list I<sk>.
  13. The I<certs> argument may be NULL, which implies no effect.
  14. It does not modify the list I<certs> but
  15. in case the B<X509_ADD_FLAG_UP_REF> flag (described below) is set
  16. the reference counters of those of its members added to I<sk> are increased.
  17. Both these functions have a I<flags> parameter,
  18. which is used to control details of the operation.
  19. The value B<X509_ADD_FLAG_DEFAULT>, which equals 0, means no special semantics.
  20. If B<X509_ADD_FLAG_UP_REF> is set then
  21. the reference counts of those certificates added successfully are increased.
  22. If B<X509_ADD_FLAG_PREPEND> is set then the certificates are prepended to I<sk>.
  23. By default they are appended to I<sk>.
  24. In both cases the original order of the added certificates is preserved.
  25. If B<X509_ADD_FLAG_NO_DUP> is set then certificates already contained in I<sk>,
  26. which is determined using L<X509_cmp(3)>, are ignored.
  27. If B<X509_ADD_FLAG_NO_SS> is set then certificates that are marked self-signed,
  28. which is determined using L<X509_self_signed(3)>, are ignored.
  29. =head1 RETURN VALUES
  30. Both functions return 1 for success and 0 for failure.
  31. =head1 NOTES
  32. If X509_add_certs() is used with the flags B<X509_ADD_FLAG_NO_DUP> or
  33. B<X509_ADD_FLAG_NO_SS> it is advisable to use also B<X509_ADD_FLAG_UP_REF>
  34. because otherwise likely not for all members of the I<certs> list
  35. the ownership is transferred to the list of certificates I<sk>.
  36. Care should also be taken in case the I<certs> argument equals I<sk>.
  37. =head1 SEE ALSO
  38. L<X509_cmp(3)>
  39. L<X509_self_signed(3)>
  40. =head1 HISTORY
  41. The functions X509_add_cert() and X509_add_certs()
  42. were added in OpenSSL 3.0.
  43. =head1 COPYRIGHT
  44. Copyright 2019-2022 The OpenSSL Project Authors. All Rights Reserved.
  45. Licensed under the Apache License 2.0 (the "License"). You may not use
  46. this file except in compliance with the License. You can obtain a copy
  47. in the file LICENSE in the source distribution or at
  48. L<https://www.openssl.org/source/license.html>.
  49. =cut