1 files changed, 123 insertions, 0 deletions
diff --git a/src/global/dsn_mask.c b/src/global/dsn_mask.c
new file mode 100644
index 0000000..b45342e
--- /dev/null
+++ b/src/global/dsn_mask.c
@@ -0,0 +1,123 @@
+/*++
+/* NAME
+/*	dsn_mask 3
+/* SUMMARY
+/*	DSN embedding in SMTP
+/* SYNOPSIS
+/*	#include <dsn_mask.h>
+/*
+/*	int	dsn_notify_mask(str)
+/*	const char *str;
+/*
+/*	const char *dsn_notify_str(mask)
+/*	int	mask;
+/*
+/*	int	dsn_ret_code(str)
+/*	const char *str;
+/*
+/*	const char *dsn_ret_str(code)
+/*	int	mask;
+/* DESCRIPTION
+/*	dsn_ret_code() converts the parameters of a MAIL FROM ..
+/*	RET option to internal form.
+/*
+/*	dsn_ret_str() converts internal form to the representation
+/*	used in the MAIL FROM .. RET command. The result is in
+/*	stable and static memory.
+/*
+/*	dsn_notify_mask() converts the parameters of a RCPT TO ..
+/*	NOTIFY option to internal form.
+/*
+/*	dsn_notify_str() converts internal form to the representation
+/*	used in the RCPT TO .. NOTIFY command. The result is in
+/*	volatile memory and is clobbered whenever str_name_mask()
+/*	is called.
+/*
+/*	Arguments:
+/* .IP str
+/*	Information received with the MAIL FROM or RCPT TO command.
+/* .IP mask
+/*	Internal representation.
+/* DIAGNOSTICS
+/*	dsn_ret_code() and dsn_notify_mask() return 0 when the string
+/*	specifies an invalid request.
+/*
+/*	dsn_ret_str() and dsn_notify_str() abort on failure.
+/* 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
+/*--*/
+
+
+/* System library. */
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+#include <name_code.h>
+#include <name_mask.h>
+#include <msg.h>
+
+/* Global library. */
+
+#include <dsn_mask.h>
+
+/* Application-specific. */
+
+static const NAME_MASK dsn_notify_table[] = {
+    "NEVER", DSN_NOTIFY_NEVER,
+    "SUCCESS", DSN_NOTIFY_SUCCESS,
+    "FAILURE", DSN_NOTIFY_FAILURE,
+    "DELAY", DSN_NOTIFY_DELAY,
+    0, 0,
+};
+
+static const NAME_CODE dsn_ret_table[] = {
+    "FULL", DSN_RET_FULL,
+    "HDRS", DSN_RET_HDRS,
+    0, 0,
+};
+
+/* dsn_ret_code - string to mask */
+
+int     dsn_ret_code(const char *str)
+{
+    return (name_code(dsn_ret_table, NAME_CODE_FLAG_NONE, str));
+}
+
+/* dsn_ret_str - mask to string */
+
+const char *dsn_ret_str(int code)
+{
+    const char *cp;
+
+    if ((cp = str_name_code(dsn_ret_table, code)) == 0)
+	msg_panic("dsn_ret_str: unknown code %d", code);
+    return (cp);
+}
+
+/* dsn_notify_mask - string to mask */
+
+int     dsn_notify_mask(const char *str)
+{
+    int     mask = name_mask_opt("DSN NOTIFY command", dsn_notify_table,
+				 str, NAME_MASK_ANY_CASE | NAME_MASK_RETURN);
+
+    return (DSN_NOTIFY_OK(mask) ? mask : 0);
+}
+
+/* dsn_notify_str - mask to string */
+
+const char *dsn_notify_str(int mask)
+{
+    return (str_name_mask_opt((VSTRING *) 0, "DSN NOTIFY command",
+			      dsn_notify_table, mask,
+			      NAME_MASK_FATAL | NAME_MASK_COMMA));
+}