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-rw-r--r--src/global/is_header.h32
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diff --git a/src/global/is_header.h b/src/global/is_header.h
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+++ b/src/global/is_header.h
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+#ifndef _IS_HEADER_H_INCLUDED_
+#define _IS_HEADER_H_INCLUDED_
+
+/*++
+/* NAME
+/* is_header 3h
+/* SUMMARY
+/* message header classification
+/* SYNOPSIS
+/* #include <is_header.h>
+/* DESCRIPTION
+/* .nf
+
+ /* External interface. */
+
+#define IS_HEADER_NULL_TERMINATED (-1)
+#define is_header(str) is_header_buf(str, IS_HEADER_NULL_TERMINATED)
+
+extern ssize_t is_header_buf(const char *, ssize_t);
+
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*--*/
+
+#endif