sendmail.h

< linux网络编程工具>>配套源码

**	in the Makefile.
**
**	Vendors should apply to [e-mail] for
**	unique vendor codes.
*/

#define VENDOR_BERKELEY	1	/* Berkeley-native configuration file */
#define VENDOR_SUN	2	/* Sun-native configuration file */
#define VENDOR_HP	3	/* Hewlett-Packard specific config syntax */
#define VENDOR_IBM	4	/* IBM specific config syntax */
#define VENDOR_SENDMAIL	5	/* Sendmail, Inc. specific config syntax */

/* prototypes for vendor-specific hook routines */
extern void	vendor_daemon_setup __P((ENVELOPE *));
extern void	vendor_set_uid __P((UID_T));


/*
**  Terminal escape codes.
**
**	To make debugging output clearer.
*/

struct termescape
{
	char	*te_rv_on;	/* turn reverse-video on */
	char	*te_rv_off;	/* turn reverse-video off */
};

/*
**  Additional definitions
*/

/* d_flags, see daemon.c */
/* general rule: lower case: required, upper case: No */
#define D_AUTHREQ	'a'	/* authentication required */
#define D_BINDIF	'b'	/* use if_addr for outgoing connection */
#define D_CANONREQ	'c'	/* canonification required (cf) */
#define D_IFNHELO	'h'	/* use if name for HELO */
#define D_FQMAIL	'f'	/* fq sender address required (cf) */
#if _FFR_TLS_CLT1
#define D_CLTNOTLS	'S'	/* don't use STARTTLS in client */
#endif /* _FFR_TLS_CLT1 */
#define D_FQRCPT	'r'	/* fq recipient address required (cf) */
#define D_UNQUALOK	'u'	/* unqualified address is ok (cf) */
#define D_NOCANON	'C'	/* no canonification (cf) */
#define D_NOETRN	'E'	/* no ETRN (MSA) */
#define D_ETRNONLY	((char)0x01)	/* allow only ETRN (disk low) */

/* Flags for submitmode */
#define SUBMIT_UNKNOWN	0x0000	/* unknown agent type */
#define SUBMIT_MTA	0x0001	/* act like a message transfer agent */
#define SUBMIT_MSA	0x0002	/* act like a message submission agent */

#if SASL
/*
**  SASL
*/

/* authenticated? */
# define SASL_NOT_AUTH	0		/* not authenticated */
# define SASL_PROC_AUTH	1		/* in process of authenticating */
# define SASL_IS_AUTH	2		/* authenticated */

/* SASL options */
# define SASL_AUTH_AUTH	0x1000		/* use auth= only if authenticated */
# if _FFR_SASL_OPTS
#  define SASL_SEC_MASK	0x0fff		/* mask for SASL_SEC_* values: sasl.h */
#  if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \
	(SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \
	(SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \
	(SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \
	(SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \
	(SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0
ERROR: change SASL_SEC_MASK_ notify sendmail.org!
#  endif
# endif /* _FFR_SASL_OPTS */

# define MAXOUTLEN 1024			/* length of output buffer */
#endif /* SASL */

#if STARTTLS
/*
**  TLS
*/

/* what to do in the TLS initialization */
#define TLS_I_NONE	0x00000000	/* no requirements... */
#define TLS_I_CERT_EX	0x00000001	/* CERT must exist */
#define TLS_I_CERT_UNR	0x00000002	/* CERT must be g/o unreadable */
#define TLS_I_KEY_EX	0x00000004	/* KEY must exist */
#define TLS_I_KEY_UNR	0x00000008	/* KEY must be g/o unreadable */
#define TLS_I_CERTP_EX	0x00000010	/* CA CERT PATH must exist */
#define TLS_I_CERTP_UNR	0x00000020	/* CA CERT PATH must be g/o unreadable */
#define TLS_I_CERTF_EX	0x00000040	/* CA CERT FILE must exist */
#define TLS_I_CERTF_UNR	0x00000080	/* CA CERT FILE must be g/o unreadable */
#define TLS_I_RSA_TMP	0x00000100	/* RSA TMP must be generated */
#define TLS_I_USE_KEY	0x00000200	/* private key must usable */
#define TLS_I_USE_CERT	0x00000400	/* certificate must be usable */
#define TLS_I_VRFY_PATH	0x00000800	/* load verify path must succeed */
#define TLS_I_VRFY_LOC	0x00001000	/* load verify default must succeed */
#define TLS_I_CACHE	0x00002000	/* require cache */
#define TLS_I_TRY_DH	0x00004000	/* try DH certificate */
#define TLS_I_REQ_DH	0x00008000	/* require DH certificate */
#define TLS_I_DHPAR_EX	0x00010000	/* require DH parameters */
#define TLS_I_DHPAR_UNR	0x00020000	/* DH param. must be g/o unreadable */
#define TLS_I_DH512	0x00040000	/* generate 512bit DH param */
#define TLS_I_DH1024	0x00080000	/* generate 1024bit DH param */
#define TLS_I_DH2048	0x00100000	/* generate 2048bit DH param */

/* server requirements */
#define TLS_I_SRV	(TLS_I_CERT_EX | TLS_I_KEY_EX | TLS_I_KEY_UNR | \
			 TLS_I_CERTP_EX | TLS_I_CERTF_EX | TLS_I_RSA_TMP | \
			 TLS_I_USE_KEY | TLS_I_USE_CERT | TLS_I_VRFY_PATH | \
			 TLS_I_VRFY_LOC | TLS_I_TRY_DH | \
			 TLS_I_DH512)

/* client requirements */
#define TLS_I_CLT	(TLS_I_KEY_UNR)

#define TLS_AUTH_OK	0
#define TLS_AUTH_NO	1
#define TLS_AUTH_FAIL	(-1)
#endif /* STARTTLS */


/*
**  Queue related items
*/

/* queue sort order */
#define QSO_BYPRIORITY	0		/* sort by message priority */
#define QSO_BYHOST	1		/* sort by first host name */
#define QSO_BYTIME	2		/* sort by submission time */
#define QSO_BYFILENAME	3		/* sort by file name only */

#if _FFR_QUEUEDELAY
#define QD_LINEAR	0		/* linear (old) delay alg */
#define QD_EXP		1		/* exponential delay alg */
#endif /* _FFR_QUEUEDELAY */

#define	NOQDIR	(-1)			/* no queue directory (yet) */

#define	NOW	((time_t) (-1))		/* queue return: now */

/* Queue Run Limitations */
struct queue_char
{
	char *queue_match;		/* string to match */
	struct queue_char *queue_next;
};

typedef struct queue_char QUEUE_CHAR;

/* functions */
extern void	assign_queueid __P((ENVELOPE *));
extern ADDRESS	*copyqueue __P((ADDRESS *));
extern void	initsys __P((ENVELOPE *));
extern void	loseqfile __P((ENVELOPE *, char *));
extern void	multiqueue_cache __P((void));
extern char	*qid_printname __P((ENVELOPE *));
extern char	*qid_printqueue __P((int));
extern char	*queuename __P((ENVELOPE *, int));
extern void	queueup __P((ENVELOPE *, bool));
extern bool	runqueue __P((bool, bool));
extern void	setnewqueue __P((ENVELOPE *));
extern bool	shouldqueue __P((long, time_t));
extern void	sync_queue_time __P((void));

/*
**  Timeouts
**
**	Indicated values are the MINIMUM per RFC 1123 section 5.3.2.
*/

EXTERN struct
{
			/* RFC 1123-specified timeouts [minimum value] */
	time_t	to_initial;	/* initial greeting timeout [5m] */
	time_t	to_mail;	/* MAIL command [5m] */
	time_t	to_rcpt;	/* RCPT command [5m] */
	time_t	to_datainit;	/* DATA initiation [2m] */
	time_t	to_datablock;	/* DATA block [3m] */
	time_t	to_datafinal;	/* DATA completion [10m] */
	time_t	to_nextcommand;	/* next command [5m] */
			/* following timeouts are not mentioned in RFC 1123 */
	time_t	to_iconnect;	/* initial connection timeout (first try) */
	time_t	to_connect;	/* initial connection timeout (later tries) */
	time_t	to_rset;	/* RSET command */
	time_t	to_helo;	/* HELO command */
	time_t	to_quit;	/* QUIT command */
	time_t	to_miscshort;	/* misc short commands (NOOP, VERB, etc) */
	time_t	to_ident;	/* IDENT protocol requests */
	time_t	to_fileopen;	/* opening :include: and .forward files */
	time_t	to_control;	/* process a control socket command */
			/* following are per message */
	time_t	to_q_return[MAXTOCLASS];	/* queue return timeouts */
	time_t	to_q_warning[MAXTOCLASS];	/* queue warning timeouts */
	time_t	res_retrans[MAXRESTOTYPES];	/* resolver retransmit */
	int	res_retry[MAXRESTOTYPES];	/* resolver retry */
} TimeOuts;

/* timeout classes for return and warning timeouts */
#define TOC_NORMAL	0	/* normal delivery */
#define TOC_URGENT	1	/* urgent delivery */
#define TOC_NONURGENT	2	/* non-urgent delivery */

/* resolver timeout specifiers */
#define RES_TO_FIRST	0	/* first attempt */
#define RES_TO_NORMAL	1	/* subsequent attempts */
#define RES_TO_DEFAULT	2	/* default value */

/* functions */
extern void	inittimeouts __P((char *, bool));

/*
**  Trace information
*/

/* macros for debugging flags */
#define tTd(flag, level)	(tTdvect[flag] >= (u_char)level)
#define tTdlevel(flag)		(tTdvect[flag])

/* variables */
extern u_char	tTdvect[100];	/* trace vector */
/*
**  Miscellaneous information.
*/

/*
**  The "no queue id" queue id for sm_syslog
*/

#define NOQID		"*~*"


/*
**  Some in-line functions
*/

/* set exit status */
#define setstat(s)	{ \
				if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \
					ExitStat = s; \
			}

/* make a copy of a string */
#define newstr(s)	strcpy(xalloc(strlen(s) + 1), s)

#define STRUCTCOPY(s, d)	d = s
/*
**  Global variables.
*/

EXTERN bool	AllowBogusHELO;	/* allow syntax errors on HELO command */
#if !_FFR_REMOVE_AUTOREBUILD
EXTERN bool	AutoRebuild;	/* auto-rebuild the alias database as needed */
#endif /* !_FFR_REMOVE_AUTOREBUILD */
EXTERN bool	CheckAliases;	/* parse addresses during newaliases */
EXTERN bool	ChownAlwaysSafe;	/* treat chown(2) as safe */
EXTERN bool	ColonOkInAddr;	/* single colon legal in address */
EXTERN bool	ConfigFileRead;	/* configuration file has been read */
EXTERN bool	DataProgress;	/* have we sent anything since last check */
EXTERN bool	DisConnected;	/* running with OutChannel redirected to xf */
EXTERN bool	DoQueueRun;	/* non-interrupt time queue run needed */
EXTERN bool	DontExpandCnames;	/* do not $[...$] expand CNAMEs */
EXTERN bool	DontInitGroups;	/* avoid initgroups() because of NIS cost */
EXTERN bool	DontLockReadFiles;	/* don't read lock support files */
EXTERN bool	DontProbeInterfaces;	/* don't probe interfaces for names */
EXTERN bool	DontPruneRoutes;	/* don't prune source routes */
EXTERN bool	ForkQueueRuns;	/* fork for each job when running the queue */
EXTERN bool	FromFlag;	/* if set, "From" person is explicit */
EXTERN bool	GrabTo;		/* if set, get recipients from msg */
EXTERN bool	HasEightBits;	/* has at least one eight bit input byte */
EXTERN bool	HasWildcardMX;	/* don't use MX records when canonifying */
EXTERN bool	HoldErrs;	/* only output errors to transcript */
EXTERN bool	IgnoreHostStatus;	/* ignore long term host status files */
EXTERN bool	IgnrDot;	/* don't let dot end messages */
EXTERN bool	InChild;	/* true if running in an SMTP subprocess */
EXTERN bool	LogUsrErrs;	/* syslog user errors (e.g., SMTP RCPT cmd) */
EXTERN bool	MapOpenErr;	/* error opening a non-optional map */
EXTERN bool	MatchGecos;	/* look for user names in gecos field */
EXTERN bool	MeToo;		/* send to the sender also */
EXTERN bool	NoAlias;	/* suppress aliasing */
EXTERN bool	NoConnect;	/* don't connect to non-local mailers */
EXTERN bool	OnlyOneError;	/*  .... or only want to give one SMTP reply */
EXTERN bool	QuickAbort;	/*  .... but only if we want a quick abort */
EXTERN bool	RrtImpliesDsn;	/* turn Return-Receipt-To: into DSN */
EXTERN bool	SaveFrom;	/* save leading "From" lines */
EXTERN bool	SendMIMEErrors;	/* send error messages in MIME format */
EXTERN bool	SevenBitInput;	/* force 7-bit data on input */
EXTERN bool	SingleLineFromHeader;	/* force From: header to be one line */
EXTERN bool	SingleThreadDelivery;	/* single thread hosts on delivery */
EXTERN bool	SuperSafe;	/* be extra careful, even if expensive */
EXTERN bool	SuprErrs;	/* set if we are suppressing errors */
EXTERN bool	TryNullMXList;	/* if we are the best MX, try host directly */
EXTERN bool	UseErrorsTo;	/* use Errors-To: header (back compat) */
EXTERN bool	UseHesiod;	/* using Hesiod -- interpret Hesiod errors */
EXTERN bool	UseNameServer;	/* using DNS -- interpret h_errno & MX RRs */
EXTERN char	InetMode;		/* default network for daemon mode */
EXTERN char	OpMode;		/* operation mode, see below */
EXTERN char	SpaceSub;	/* substitution for <lwsp> */
EXTERN int	CheckpointInterval;	/* queue file checkpoint interval */
EXTERN int	ConfigLevel;	/* config file level */
EXTERN int	ConnRateThrottle;	/* throttle for SMTP connection rate */
EXTERN int	CurChildren;	/* current number of daemonic children */
EXTERN int	CurrentLA;	/* current load average */
EXTERN int	DefaultNotify;	/* default DSN notification flags */
EXTERN int	Errors;		/* set if errors (local to single pass) */
EXTERN int	ExitStat;	/* exit status code */
EXTERN int	FileMode;	/* mode on files */
EXTERN int	LineNumber;	/* line number in current input */
EXTERN int	LogLevel;	/* level of logging to perform */
EXTERN int	MaxAliasRecursion;	/* maximum depth of alias recursion */
EXTERN int	MaxChildren;	/* maximum number of daemonic children */
EXTERN int	MaxForwardEntries;	/* maximum number of forward entries */
EXTERN int	MaxHeadersLength;	/* max length of headers */
EXTERN int	MaxHopCount;	/* max # of hops until bounce */
EXTERN int	MaxMacroRecursion;	/* maximum depth of macro recursion */
EXTERN int	MaxMciCache;		/* maximum entries in MCI cache */
EXTERN int	MaxMimeFieldLength;	/* maximum MIME field length */
EXTERN int	MaxMimeHeaderLength;	/* maximum MIME header length */


EXTERN int	MaxQueueRun;	/* maximum number of jobs in one queue run */
EXTERN int	MaxRcptPerMsg;	/* max recipients per SMTP message */
EXTERN int	MaxRuleRecursion;	/* maximum depth of ruleset recursion */
EXTERN int	MimeMode;	/* MIME processing mode */
EXTERN int	NoRecipientAction;
EXTERN int	NumPriorities;	/* pointer into Priorities */
EXTERN u_short	PrivacyFlags;	/* privacy flags */
#if _FFR_QUEUE_FILE_MODE
EXTERN int	QueueFileMode;	/* mode on qf/tf/df files */
#endif /* _FFR_QUEUE_FILE_MODE */
EXTERN int	QueueLA;	/* load average starting forced queueing */
EXTERN int	QueueSortOrder;	/* queue sorting order algorithm */
EXTERN int	RefuseLA;	/* load average refusing connections are */
EXTERN int	VendorCode;	/* vendor-specific operation enhancements */
EXTERN int	Verbose;	/* set if blow-by-blow desired */
EXTERN gid_t	DefGid;		/* default gid to run as */
EXTERN gid_t	RealGid;	/* real gid of caller */
EXTERN gid_t	RunAsGid;	/* GID to become for bulk of run */
EXTERN uid_t	DefUid;		/* default uid to run as */
EXTERN uid_t	RealUid;	/* real uid of caller */
EXTERN uid_t	RunAsUid;