Commit e5d5019a authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

document -2 return value



Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
(cherry picked from commit 5727582c)
parent d6be3124
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+7 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ and issuer names.
X509_NAME_get_index_by_NID() and X509_NAME_get_index_by_OBJ() retrieve
the next index matching B<nid> or B<obj> after B<lastpos>. B<lastpos>
should initially be set to -1. If there are no more entries -1 is returned.
If B<nid> is invalid (doesn't correspond to a valid OID) then -2 is returned.

X509_NAME_entry_count() returns the total number of entries in B<name>.

@@ -63,6 +64,10 @@ The list of all relevant B<NID_*> and B<OBJ_* codes> can be found in
the source code header files E<lt>openssl/obj_mac.hE<gt> and/or
E<lt>openssl/objects.hE<gt>.

Applications which could pass invalid NIDs to X509_NAME_get_index_by_NID()
should check for the return value of -2. Alternatively the NID validity
can be determined first by checking OBJ_nid2obj(nid) is not NULL.

=head1 EXAMPLES

Process all entries:
@@ -95,6 +100,8 @@ Process all commonName entries:

X509_NAME_get_index_by_NID() and X509_NAME_get_index_by_OBJ()
return the index of the next matching entry or -1 if not found.
X509_NAME_get_index_by_NID() can also return -2 if the supplied
NID is invalid.

X509_NAME_entry_count() returns the total number of entries.