X509V3_ADDR_INHERITS(3)    Library Functions Manual    X509V3_ADDR_INHERITS(3)

NAME
     X509v3_addr_inherits, X509v3_asid_inherits - RFC 3779 inheritance

SYNOPSIS
     #include <openssl/x509v3.h>

     int
     X509v3_addr_inherits(IPAddrBlocks *addrblocks);

     int
     X509v3_asid_inherits(ASIdentifiers *asids);

DESCRIPTION
     X509v3_addr_inherits() determines if there is at least one address family
     in addrblocks that uses inheritance.

     X509v3_asid_inherits() is intended to determine if at least one of the
     list of autonomous system numbers or the list of routing domain
     identifiers uses inheritance.

RETURN VALUES
     X509v3_addr_inherits() returns 1 if and only if addrblocks contains at
     least one IPAddressFamily object that is correctly marked "inherit": its
     IPAddressChoice is of type IPAddressChoice_inherit and its inherit
     element is present.  Otherwise it returns 0.

     X509v3_asid_inherits() returns 1 if and only if at least one of the asnum
     or the rdi lists has type ASIdentifierChoice_inherit.  Otherwise it
     returns 0.

SEE ALSO
     ASIdentifiers_new(3), ASRange_new(3), crypto(3), IPAddressRange_new(3),
     X509_new(3), X509v3_addr_add_inherit(3), X509v3_asid_add_inherit(3)

STANDARDS
     RFC 3779: X.509 Extensions for IP Addresses and AS Identifiers:
     -   section 2: IP Address delegation extension
     -   section 2.2.3.5: Element inherit
     -   section 3: AS identifiers delegation extension
     -   section 3.2.3.3: Element inherit

HISTORY
     These functions first appeared in OpenSSL 0.9.8e and have been available
     since OpenBSD 7.1.

BUGS
     X509v3_asid_inherits() ignores whether the inherit element is present or
     absent in the list that is considered to use inheritance.

     There is no API that determines whether all lists contained in an
     ASIdentifiers or an IPAddrBlocks object inherit.  See RFC 9287, 5.1.2 for
     an example where this is relevant.

Linux 6.8.7-arch1-1           September 30, 2023           Linux 6.8.7-arch1-1