1 files changed, 109 insertions, 0 deletions
diff --git a/src/global/mail_version.h b/src/global/mail_version.h
new file mode 100644
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+++ b/src/global/mail_version.h
@@ -0,0 +1,109 @@
+#ifndef _MAIL_VERSION_H_INCLUDED_
+#define _MAIL_VERSION_H_INCLUDED_
+
+/*++
+/* NAME
+/*	mail_version 3h
+/* SUMMARY
+/*	globally configurable parameters
+/* SYNOPSIS
+/*	#include <mail_version.h>
+/* DESCRIPTION
+/* .nf
+
+ /*
+  * Version of this program. Official versions are called a.b.c, and
+  * snapshots are called a.b-yyyymmdd, where a=major release number, b=minor
+  * release number, c=patchlevel, and yyyymmdd is the release date:
+  * yyyy=year, mm=month, dd=day.
+  * 
+  * Patches change both the patchlevel and the release date. Snapshots have no
+  * patchlevel; they change the release date only.
+  */
+#define MAIL_RELEASE_DATE	"20211107"
+#define MAIL_VERSION_NUMBER	"3.4.23"
+
+#ifdef SNAPSHOT
+#define MAIL_VERSION_DATE	"-" MAIL_RELEASE_DATE
+#else
+#define MAIL_VERSION_DATE	""
+#endif
+
+#ifdef NONPROD
+#define MAIL_VERSION_PROD	"-nonprod"
+#else
+#define MAIL_VERSION_PROD	""
+#endif
+
+#define VAR_MAIL_VERSION	"mail_version"
+#define DEF_MAIL_VERSION	MAIL_VERSION_NUMBER MAIL_VERSION_DATE MAIL_VERSION_PROD
+
+extern char *var_mail_version;
+
+ /*
+  * Release date.
+  */
+#define VAR_MAIL_RELEASE	"mail_release_date"
+#define DEF_MAIL_RELEASE	MAIL_RELEASE_DATE
+extern char *var_mail_release;
+
+ /*
+  * The following macros stamp executable files as well as core dumps. This
+  * information helps to answer the following questions:
+  * 
+  * - What Postfix versions(s) are installed on this machine?
+  * 
+  * - Is this installation mixing multiple Postfix versions?
+  * 
+  * - What Postfix version generated this core dump?
+  * 
+  * To find out: strings -f file... | grep mail_version=
+  */
+#include <string.h>
+
+#define MAIL_VERSION_STAMP_DECLARE \
+    char *mail_version_stamp
+
+#define MAIL_VERSION_STAMP_ALLOCATE \
+    mail_version_stamp = strdup(VAR_MAIL_VERSION "=" DEF_MAIL_VERSION)
+
+ /*
+  * Mail version string parser, plus support to compare the compile-time
+  * version string of a Postfix program with the run-time version string of a
+  * Postfix shared library. When programs are not updated, they may fail in
+  * erratic ways when linked against a newer run-time library. Of course the
+  * right solution is so-number versioning of the Postfix run-time library.
+  */
+typedef struct {
+    char   *program;			/* postfix */
+    int     major;			/* 2 */
+    int     minor;			/* 9 */
+    int     patch;			/* null */
+    char   *snapshot;			/* 20111209-nonprod */
+} MAIL_VERSION;
+
+extern MAIL_VERSION *mail_version_parse(const char *, const char **);
+extern void mail_version_free(MAIL_VERSION *);
+extern const char *get_mail_version(void);
+extern void check_mail_version(const char *);
+
+#define MAIL_VERSION_CHECK \
+    check_mail_version(DEF_MAIL_VERSION)
+
+/* 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
+/*--*/
+
+#endif