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-rw-r--r--src/global/ehlo_mask.c145
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
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--- /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