1 files changed, 145 insertions, 0 deletions
diff --git a/src/global/ehlo_mask.c b/src/global/ehlo_mask.c
new file mode 100644
index 0000000..df905e1
--- /dev/null
+++ b/src/global/ehlo_mask.c
@@ -0,0 +1,145 @@
+/*++
+/* NAME
+/*	ehlo_mask 3
+/* SUMMARY
+/*	map EHLO keywords to bit mask
+/* SYNOPSIS
+/*	#include <ehlo_mask.h>
+/*
+/*	#define EHLO_MASK_8BITMIME	(1<<0)
+/*	#define EHLO_MASK_PIPELINING	(1<<1)
+/*	#define EHLO_MASK_SIZE		(1<<2)
+/*	#define EHLO_MASK_VRFY		(1<<3)
+/*	#define EHLO_MASK_ETRN		(1<<4)
+/*	#define EHLO_MASK_AUTH		(1<<5)
+/*	#define EHLO_MASK_VERP		(1<<6)
+/*	#define EHLO_MASK_STARTTLS	(1<<7)
+/*	#define EHLO_MASK_XCLIENT	(1<<8)
+/*	#define EHLO_MASK_XFORWARD	(1<<9)
+/*	#define EHLO_MASK_ENHANCEDSTATUSCODES	(1<<10)
+/*	#define EHLO_MASK_DSN		(1<<11)
+/*	#define EHLO_MASK_SMTPUTF8	(1<<12)
+/*	#define EHLO_MASK_CHUNKING	(1<<13)
+/*	#define EHLO_MASK_SILENT	(1<<15)
+/*
+/*	int	ehlo_mask(keyword_list)
+/*	const char *keyword_list;
+/*
+/*	const char *str_ehlo_mask(bitmask)
+/*	int	bitmask;
+/* DESCRIPTION
+/*	ehlo_mask() computes the bit-wise OR of the masks that correspond
+/*	to the names listed in the \fIkeyword_list\fR argument, separated by
+/*	comma and/or whitespace characters. Undefined names are silently
+/*	ignored.
+/*
+/*	str_ehlo_mask() translates a mask into its equivalent names.
+/*	The result is written to a static buffer that is overwritten
+/*	upon each call. Undefined bits cause a fatal run-time error.
+/* DIAGNOSTICS
+/*	Fatal: str_ehlo_mask() found an undefined bit.
+/* 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
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library.*/
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+#include <name_mask.h>
+
+/* Global library. */
+
+#include <ehlo_mask.h>
+
+ /*
+  * The lookup table.
+  */
+static const NAME_MASK ehlo_mask_table[] = {
+    "8BITMIME", EHLO_MASK_8BITMIME,
+    "AUTH", EHLO_MASK_AUTH,
+    "ETRN", EHLO_MASK_ETRN,
+    "PIPELINING", EHLO_MASK_PIPELINING,
+    "SIZE", EHLO_MASK_SIZE,
+    "VERP", EHLO_MASK_VERP,
+    "VRFY", EHLO_MASK_VRFY,
+    "XCLIENT", EHLO_MASK_XCLIENT,
+    "XFORWARD", EHLO_MASK_XFORWARD,
+    "STARTTLS", EHLO_MASK_STARTTLS,
+    "ENHANCEDSTATUSCODES", EHLO_MASK_ENHANCEDSTATUSCODES,
+    "DSN", EHLO_MASK_DSN,
+    "EHLO_MASK_SMTPUTF8", EHLO_MASK_SMTPUTF8,
+    "SMTPUTF8", EHLO_MASK_SMTPUTF8,
+    "CHUNKING", EHLO_MASK_CHUNKING,
+    "SILENT-DISCARD", EHLO_MASK_SILENT,	/* XXX In-band signaling */
+    0,
+};
+
+/* ehlo_mask - string to bit mask */
+
+int     ehlo_mask(const char *mask_str)
+{
+
+    /*
+     * We allow "STARTTLS" besides "starttls, because EHLO keywords are often
+     * spelled in uppercase. We ignore non-existent EHLO keywords so people
+     * can switch between Postfix versions without trouble.
+     */
+    return (name_mask_opt("ehlo string mask", ehlo_mask_table,
+			  mask_str, NAME_MASK_ANY_CASE | NAME_MASK_IGNORE));
+}
+
+/* str_ehlo_mask - mask to string */
+
+const char *str_ehlo_mask(int mask_bits)
+{
+
+    /*
+     * We don't allow non-existent bits. Doing so makes no sense at this
+     * time.
+     */
+    return (str_name_mask("ehlo bitmask", ehlo_mask_table, mask_bits));
+}
+
+#ifdef TEST
+
+ /*
+  * Stand-alone test program.
+  */
+#include <stdlib.h>
+#include <vstream.h>
+#include <vstring.h>
+#include <vstring_vstream.h>
+
+int     main(int unused_argc, char **unused_argv)
+{
+    int     mask_bits;
+    VSTRING *buf = vstring_alloc(1);
+    const char *mask_string;
+
+    while (vstring_get_nonl(buf, VSTREAM_IN) != VSTREAM_EOF) {
+	mask_bits = ehlo_mask(vstring_str(buf));
+	mask_string = str_ehlo_mask(mask_bits);
+	vstream_printf("%s -> 0x%x -> %s\n", vstring_str(buf), mask_bits,
+		       mask_string);
+	vstream_fflush(VSTREAM_OUT);
+    }
+    vstring_free(buf);
+    exit(0);
+}
+
+#endif