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-rw-r--r--src/global/dsn_util.h77
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diff --git a/src/global/dsn_util.h b/src/global/dsn_util.h
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+#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