* Copyright (c) 1983 Eric P. Allman
* Copyright (c) 1988 Regents of the University of California.
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
"@(#) Copyright (c) 1988 Regents of the University of California.\n\
static char sccsid
[] = "@(#)matchhdr.c 5.3 (Berkeley) 2/14/89";
SCCSID(@
(#)matchhdr.c 5.3 2/14/89);
** MATCHHDR -- Match header line
** Matches a header line in arpanet format (case and white
** This routine is used by arpa-mailer and sendmail.
** line -- the line to match against.
** pat -- the pattern to match against; must be in
** address of the 'value' of the pattern (the beginning
** of the non-white string following the delim).
** It doesn't handle folded lines.
for (q
= pat
, p
= line
; *q
!= '\0'; p
++, q
++)
return (*p
== '\0' ? NULL
: p
);
** LOWERCASE -- Convert a character to lower case
** If the argument is an upper case letter, it is converted
** to a lower case letter, otherwise it is passed through
** c -- the character to check.
** c converted to lower case.