ap_scan_script_header_err — scan the headers output by a CGI
int ap_scan_script_header_err(request_rec *r, FILE *f, char *buffer)
Read the headers arriving from a CGI on f,
checking them for correctness. Most headers are simply stored in
r->headers_out, which means
they’ll ultimately be sent to the client, but a few
are dealt with specially:
Status
If this is set, it is used as the HTTP response code.
Location
If this is set, the result is a redirect to the URL specified.
If buffer is provided (it can be
NULL), then — should the script send an
illegal header — it will be left in buffer,
which must be at least MAX_STRING_LEN bytes long.
The return value is HTTP_OK, the status set by the
script, or SERVER_ERROR if an error occurred.