unsigned char **ptrs, int *pcnt)
Retrieve the original header set from the "z=" tag in a received
signature if present.
||dkim_ohdrs() is called after
dkim_eom() to get the
original header set included in a signature on a message, if present,
for diagnostic purposes. The original headers can be compared to
the received headers to detect modifications in transit which prevented
successful verification of the message.
||Message-specific handle, returned by
||Signature handle from which the original headers should be
||A pointer to a an array of (char *) pointers which will
be updated to point to the original headers.
||On input, this is used as the count of available pointers
in the ptrs array. When returned, this value indicates
the number of headers available. If it is higher on return than
it was when called, then there were more headers than there were
||The function was called before dkim_eom, or with
a handle that was not opened for verification.
||The value contained in the "z=" tag contained corruption.
||A memory allocation operation failed.
- If there was no "z=" tag present, the value referenced by pcnt
will be set to zero.