1 files changed, 77 insertions, 0 deletions
diff --git a/src/global/dsn_util.h b/src/global/dsn_util.h
new file mode 100644
index 0000000..8657a3e
--- /dev/null
+++ b/src/global/dsn_util.h
@@ -0,0 +1,77 @@
+#ifndef _DSN_UTIL_H_INCLUDED_
+#define _DSN_UTIL_H_INCLUDED_
+
+/*++
+/* NAME
+/*	dsn_util 3h
+/* SUMMARY
+/*	DSN status parsing routines
+/* SYNOPSIS
+/*	#include <dsn_util.h>
+/* DESCRIPTION
+/* .nf
+
+ /*
+  * Utility library.
+  */
+#include <vstring.h>
+
+ /*
+  * Detail format is digit "." digit{1,3} "." digit{1,3}.
+  */
+#define DSN_DIGS1	1		/* leading digits */
+#define DSN_DIGS2	3		/* middle digits */
+#define DSN_DIGS3	3		/* trailing digits */
+#define DSN_LEN		(DSN_DIGS1 + 1 + DSN_DIGS2 + 1 + DSN_DIGS3)
+#define DSN_SIZE	(DSN_LEN + 1)
+
+ /*
+  * Storage for an enhanced status code. Avoid using malloc for itty-bitty
+  * strings with a known size limit.
+  * 
+  * XXX gcc version 2 complains about sizeof() as format width specifier.
+  */
+typedef struct {
+    char    data[DSN_SIZE];		/* NOT a public interface */
+} DSN_STAT;
+
+#define DSN_UPDATE(dsn_buf, dsn, len) do { \
+	if (len >= sizeof((dsn_buf).data)) \
+	    msg_panic("DSN_UPDATE: bad DSN code \"%.*s...\" length %d", \
+		INT_SIZEOF((dsn_buf).data) - 1, dsn, len); \
+	strncpy((dsn_buf).data, (dsn), (len)); \
+	(dsn_buf).data[len] = 0; \
+    } while (0)
+
+#define DSN_STATUS(dsn_buf) ((const char *) (dsn_buf).data)
+
+#define DSN_CLASS(dsn_buf) ((dsn_buf).data[0])
+
+ /*
+  * Split flat text into detail code and free text.
+  */
+typedef struct {
+    DSN_STAT dsn;			/* RFC 3463 status */
+    const char *text;			/* free text */
+} DSN_SPLIT;
+
+extern DSN_SPLIT *dsn_split(DSN_SPLIT *, const char *, const char *);
+extern size_t dsn_valid(const char *);
+
+ /*
+  * Create flat text from detail code and free text.
+  */
+extern char *dsn_prepend(const char *, const char *);
+
+/* 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