Query the library to find the fo= value from the DMARC record.
is called after the DMARC record has been fetched and parsed.
||The address of a structure of type
DMARC_POLICY_T as returned from opendmarc_policy_connect_init().
||The address of an integer to receive the value following the fo=, a value (a bitmap) of:
DMARC_RECORD_FO_UNSPECIFIED if the fo= was absent or if no ruf= was specified.
DMARC_RECORD_FO_0 if fo=0.
DMARC_RECORD_FO_1 if fo=1.
DMARC_RECORD_FO_D if fo=d.
DMARC_RECORD_FO_S if fo=s.
- DMARC_PARSE_OKAY -- On success.
- DMARC_PARSE_ERROR_EMPTY -- The pctp pointer was NULL.
- DMARC_PARSE_ERROR_NULL_CTX -- If you passed in a fo pointer value that was NULL.