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- /*
- * Copyright (c) 1983 Eric P. Allman
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1988 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)matchhdr.c 5.4 (Berkeley) 6/1/90";
- #endif /* not lint */
-
- # include <stdio.h>
- # include <ctype.h>
- # include <useful.h>
-
- SCCSID(@(#)matchhdr.c 5.4 6/1/90);
-
- /*
- ** MATCHHDR -- Match header line
- **
- ** Matches a header line in arpanet format (case and white
- ** space is ignored).
- **
- ** This routine is used by arpa-mailer and sendmail.
- **
- ** Parameters:
- ** line -- the line to match against.
- ** pat -- the pattern to match against; must be in
- ** lower case.
- **
- ** Returns:
- ** address of the 'value' of the pattern (the beginning
- ** of the non-white string following the delim).
- ** NULL if none found.
- **
- ** Side Effects:
- ** none
- **
- ** Called By:
- ** maketemp
- ** sendmail [arpa.c]
- **
- ** Deficiencies:
- ** It doesn't handle folded lines.
- */
-
- char *
- matchhdr(line, pat)
- char *line;
- char *pat;
- {
- register char *p;
- register char *q;
-
- for (q = pat, p = line; *q != '\0'; p++, q++)
- if (lowercase(*p) != *q)
- return (NULL);
- while (isspace(*p))
- p++;
- if (*p != ':')
- return (NULL);
- while (isspace(*++p))
- continue;
- 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
- ** unchanged.
- **
- ** Parameters:
- ** c -- the character to check.
- **
- ** Returns:
- ** c converted to lower case.
- **
- ** Side Effects:
- ** none
- **
- ** Called By:
- ** matchhdr
- */
-
- lowercase(c)
- register char c;
- {
- if (isupper(c))
- c -= 'A' - 'a';
- return (c);
- }
-