/*++ /* NAME /* mail_version 3 /* SUMMARY /* time-dependent probe sender addresses /* SYNOPSIS /* #include <mail_version.h> /* /* typedef struct {
/* char *program; /* postfix */ /* int major; /* 2 */ /* int minor; /* 9 */ /* int patch; /* patchlevel or -1 */ /* char *snapshot; /* null or snapshot info */ /* } MAIL_VERSION; /* /* MAIL_VERSION *mail_version_parse(version_string, why) /* const char *version_string; /* const char **why; /* /* void mail_version_free(mp) /* MAIL_VERSION *mp; /* /* const char *get_mail_version() /* /* int check_mail_version(version_string) /* const char *version_string; /* DESCRIPTION /* This module understands the format of Postfix version strings /* (for example the default value of "mail_version"), and /* provides support to compare the compile-time version of a /* Postfix program with the run-time version of a Postfix /* library. Apparently, some distributions don't use proper /* so-number versioning, causing programs to fail erratically /* after an update replaces the library but not the program. /* /* A Postfix version string consists of two or three parts /* separated by a single "-" character: /* .IP \(bu /* The first part is a string with the program name. /* .IP \(bu /* The second part is the program version: either two or three /* non-negative integer numbers separated by single "." /* character. Stable releases have a major version, minor /* version and patchlevel; experimental releases (snapshots) /* have only major and minor version numbers. /* .IP \(bu /* The third part is ignored with a stable release, otherwise /* it is a string with the snapshot release date plus some /* optional information. /* /* mail_version_parse() parses a version string. /* /* get_mail_version() returns the version string (the value /* of DEF_MAIL_VERSION) that is compiled into the library. /* /* check_mail_version() compares the caller's version string /* (usually the value of DEF_MAIL_VERSION) that is compiled /* into the caller, and logs a warning when the strings differ. /* DIAGNOSTICS /* In the case of a parsing error, mail_version_parse() returns /* a null pointer, and sets the why argument to a string with /* problem details. /* 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
/*--*/
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