4.4BSD/usr/src/usr.sbin/sendmail/src/sendmail.h
/*
* Copyright (c) 1983 Eric P. Allman
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)sendmail.h 8.1 (Berkeley) 6/7/93
*/
/*
** SENDMAIL.H -- Global definitions for sendmail.
*/
# ifdef _DEFINE
# define EXTERN
# ifndef lint
static char SmailSccsId[] = "@(#)sendmail.h 8.1 6/7/93";
# endif
# else /* _DEFINE */
# define EXTERN extern
# endif /* _DEFINE */
# include <unistd.h>
# include <stddef.h>
# include <stdlib.h>
# include <stdio.h>
# include <ctype.h>
# include <setjmp.h>
# include <sysexits.h>
# include <string.h>
# include <time.h>
# include <errno.h>
# include "conf.h"
# include "useful.h"
# ifdef LOG
# include <syslog.h>
# endif /* LOG */
# ifdef DAEMON
# include <sys/socket.h>
# endif
# ifdef NETINET
# include <netinet/in.h>
# endif
# ifdef NETISO
# include <netiso/iso.h>
# endif
# ifdef NETNS
# include <netns/ns.h>
# endif
# ifdef NETX25
# include <netccitt/x25.h>
# endif
/*
** Data structure for bit maps.
**
** Each bit in this map can be referenced by an ascii character.
** This is 128 possible bits, or 12 8-bit bytes.
*/
#define BITMAPBYTES 16 /* number of bytes in a bit map */
#define BYTEBITS 8 /* number of bits in a byte */
/* internal macros */
#define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int)))
#define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int))))
typedef int BITMAP[BITMAPBYTES / sizeof (int)];
/* test bit number N */
#define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit))
/* set bit number N */
#define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit)
/* clear bit number N */
#define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit)
/* clear an entire bit map */
#define clrbitmap(map) bzero((char *) map, BITMAPBYTES)
/*
** Address structure.
** Addresses are stored internally in this structure.
*/
struct address
{
char *q_paddr; /* the printname for the address */
char *q_user; /* user name */
char *q_ruser; /* real user name, or NULL if q_user */
char *q_host; /* host name */
struct mailer *q_mailer; /* mailer to use */
u_short q_flags; /* status flags, see below */
uid_t q_uid; /* user-id of receiver (if known) */
gid_t q_gid; /* group-id of receiver (if known) */
char *q_home; /* home dir (local mailer only) */
char *q_fullname; /* full name if known */
struct address *q_next; /* chain */
struct address *q_alias; /* address this results from */
char *q_owner; /* owner of q_alias */
struct address *q_tchain; /* temporary use chain */
time_t q_timeout; /* timeout for this address */
};
typedef struct address ADDRESS;
# define QDONTSEND 000001 /* don't send to this address */
# define QBADADDR 000002 /* this address is verified bad */
# define QGOODUID 000004 /* the q_uid q_gid fields are good */
# define QPRIMARY 000010 /* set from argv */
# define QQUEUEUP 000020 /* queue for later transmission */
# define QSENT 000040 /* has been successfully delivered */
# define QNOTREMOTE 000100 /* not an address for remote forwarding */
# define QSELFREF 000200 /* this address references itself */
# define QVERIFIED 000400 /* verified, but not expanded */
/*
** Mailer definition structure.
** Every mailer known to the system is declared in this
** structure. It defines the pathname of the mailer, some
** flags associated with it, and the argument vector to
** pass to it. The flags are defined in conf.c
**
** The argument vector is expanded before actual use. All
** words except the first are passed through the macro
** processor.
*/
struct mailer
{
char *m_name; /* symbolic name of this mailer */
char *m_mailer; /* pathname of the mailer to use */
BITMAP m_flags; /* status flags, see below */
short m_mno; /* mailer number internally */
char **m_argv; /* template argument vector */
short m_sh_rwset; /* rewrite set: sender header addresses */
short m_se_rwset; /* rewrite set: sender envelope addresses */
short m_rh_rwset; /* rewrite set: recipient header addresses */
short m_re_rwset; /* rewrite set: recipient envelope addresses */
char *m_eol; /* end of line string */
long m_maxsize; /* size limit on message to this mailer */
int m_linelimit; /* max # characters per line */
char *m_execdir; /* directory to chdir to before execv */
};
typedef struct mailer MAILER;
/* bits for m_flags */
# define M_ESMTP 'a' /* run Extended SMTP protocol */
# define M_BLANKEND 'b' /* ensure blank line at end of message */
# define M_NOCOMMENT 'c' /* don't include comment part of address */
# define M_CANONICAL 'C' /* make addresses canonical "u@dom" */
/* 'D' /* CF: include Date: */
# define M_EXPENSIVE 'e' /* it costs to use this mailer.... */
# define M_ESCFROM 'E' /* escape From lines to >From */
# define M_FOPT 'f' /* mailer takes picky -f flag */
/* 'F' /* CF: include From: or Resent-From: */
# define M_NO_NULL_FROM 'g' /* sender of errors should be $g */
# define M_HST_UPPER 'h' /* preserve host case distinction */
/* 'H' /* UIUC: MAIL11V3: preview headers */
# define M_INTERNAL 'I' /* SMTP to another sendmail site */
# define M_LOCALMAILER 'l' /* delivery is to this host */
# define M_LIMITS 'L' /* must enforce SMTP line limits */
# define M_MUSER 'm' /* can handle multiple users at once */
/* 'M' /* CF: include Message-Id: */
# define M_NHDR 'n' /* don't insert From line */
/* 'N' /* UIUC: MAIL11V3: DATA returns multi-status */
# define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */
/* 'P' /* CF: include Return-Path: */
# define M_ROPT 'r' /* mailer takes picky -r flag */
# define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */
# define M_STRIPQ 's' /* strip quote chars from user/host */
# define M_RESTR 'S' /* must be daemon to execute */
# define M_USR_UPPER 'u' /* preserve user case distinction */
# define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */
/* 'V' /* UIUC: !-relativize all addresses */
/* 'x' /* CF: include Full-Name: */
# define M_XDOT 'X' /* use hidden-dot algorithm */
# define M_7BITS '7' /* use 7-bit path */
EXTERN MAILER *Mailer[MAXMAILERS+1];
EXTERN MAILER *LocalMailer; /* ptr to local mailer */
EXTERN MAILER *ProgMailer; /* ptr to program mailer */
EXTERN MAILER *FileMailer; /* ptr to *file* mailer */
EXTERN MAILER *InclMailer; /* ptr to *include* mailer */
/*
** Header structure.
** This structure is used internally to store header items.
*/
struct header
{
char *h_field; /* the name of the field */
char *h_value; /* the value of that field */
struct header *h_link; /* the next header */
u_short h_flags; /* status bits, see below */
BITMAP h_mflags; /* m_flags bits needed */
};
typedef struct header HDR;
/*
** Header information structure.
** Defined in conf.c, this struct declares the header fields
** that have some magic meaning.
*/
struct hdrinfo
{
char *hi_field; /* the name of the field */
u_short hi_flags; /* status bits, see below */
};
extern struct hdrinfo HdrInfo[];
/* bits for h_flags and hi_flags */
# define H_EOH 00001 /* this field terminates header */
# define H_RCPT 00002 /* contains recipient addresses */
# define H_DEFAULT 00004 /* if another value is found, drop this */
# define H_RESENT 00010 /* this address is a "Resent-..." address */
# define H_CHECK 00020 /* check h_mflags against m_flags */
# define H_ACHECK 00040 /* ditto, but always (not just default) */
# define H_FORCE 00100 /* force this field, even if default */
# define H_TRACE 00200 /* this field contains trace information */
# define H_FROM 00400 /* this is a from-type field */
# define H_VALID 01000 /* this field has a validated value */
# define H_RECEIPTTO 02000 /* this field has return receipt info */
# define H_ERRORSTO 04000 /* this field has error address info */
/*
** Envelope structure.
** This structure defines the message itself. There is usually
** only one of these -- for the message that we originally read
** and which is our primary interest -- but other envelopes can
** be generated during processing. For example, error messages
** will have their own envelope.
*/
# define ENVELOPE struct envelope
ENVELOPE
{
HDR *e_header; /* head of header list */
long e_msgpriority; /* adjusted priority of this message */
time_t e_ctime; /* time message appeared in the queue */
char *e_to; /* the target person */
char *e_receiptto; /* return receipt address */
ADDRESS e_from; /* the person it is from */
char *e_sender; /* e_from.q_paddr w comments stripped */
char **e_fromdomain; /* the domain part of the sender */
ADDRESS *e_sendqueue; /* list of message recipients */
ADDRESS *e_errorqueue; /* the queue for error responses */
long e_msgsize; /* size of the message in bytes */
int e_nrcpts; /* number of recipients */
short e_class; /* msg class (priority, junk, etc.) */
short e_flags; /* flags, see below */
short e_hopcount; /* number of times processed */
short e_nsent; /* number of sends since checkpoint */
short e_sendmode; /* message send mode */
short e_errormode; /* error return mode */
int (*e_puthdr)__P((FILE *, MAILER *, ENVELOPE *));
/* function to put header of message */
int (*e_putbody)__P((FILE *, MAILER *, ENVELOPE *, char *));
/* function to put body of message */
struct envelope *e_parent; /* the message this one encloses */
struct envelope *e_sibling; /* the next envelope of interest */
char *e_bodytype; /* type of message body */
char *e_df; /* location of temp file */
FILE *e_dfp; /* temporary file */
char *e_id; /* code for this entry in queue */
FILE *e_xfp; /* transcript file */
FILE *e_lockfp; /* the lock file for this message */
char *e_message; /* error message */
char *e_statmsg; /* stat msg (changes per delivery) */
char *e_msgboundary; /* MIME-style message part boundary */
char *e_macro[128]; /* macro definitions */
};
/* values for e_flags */
#define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */
#define EF_INQUEUE 000002 /* this message is fully queued */
#define EF_TIMEOUT 000004 /* this message is too old */
#define EF_CLRQUEUE 000010 /* disk copy is no longer needed */
#define EF_SENDRECEIPT 000020 /* send a return receipt */
#define EF_FATALERRS 000040 /* fatal errors occured */
#define EF_KEEPQUEUE 000100 /* keep queue files always */
#define EF_RESPONSE 000200 /* this is an error or return receipt */
#define EF_RESENT 000400 /* this message is being forwarded */
#define EF_VRFYONLY 001000 /* verify only (don't expand aliases) */
#define EF_WARNING 002000 /* warning message has been sent */
#define EF_QUEUERUN 004000 /* this envelope is from queue */
EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */
/*
** Message priority classes.
**
** The message class is read directly from the Priority: header
** field in the message.
**
** CurEnv->e_msgpriority is the number of bytes in the message plus
** the creation time (so that jobs ``tend'' to be ordered correctly),
** adjusted by the message class, the number of recipients, and the
** amount of time the message has been sitting around. This number
** is used to order the queue. Higher values mean LOWER priority.
**
** Each priority class point is worth WkClassFact priority points;
** each recipient is worth WkRecipFact priority points. Each time
** we reprocess a message the priority is adjusted by WkTimeFact.
** WkTimeFact should normally decrease the priority so that jobs
** that have historically failed will be run later; thanks go to
** Jay Lepreau at Utah for pointing out the error in my thinking.
**
** The "class" is this number, unadjusted by the age or size of
** this message. Classes with negative representations will have
** error messages thrown away if they are not local.
*/
struct priority
{
char *pri_name; /* external name of priority */
int pri_val; /* internal value for same */
};
EXTERN struct priority Priorities[MAXPRIORITIES];
EXTERN int NumPriorities; /* pointer into Priorities */
/*
** Rewrite rules.
*/
struct rewrite
{
char **r_lhs; /* pattern match */
char **r_rhs; /* substitution value */
struct rewrite *r_next;/* next in chain */
};
EXTERN struct rewrite *RewriteRules[MAXRWSETS];
/*
** Special characters in rewriting rules.
** These are used internally only.
** The COND* rules are actually used in macros rather than in
** rewriting rules, but are given here because they
** cannot conflict.
*/
/* left hand side items */
# define MATCHZANY 0220 /* match zero or more tokens */
# define MATCHANY 0221 /* match one or more tokens */
# define MATCHONE 0222 /* match exactly one token */
# define MATCHCLASS 0223 /* match one token in a class */
# define MATCHNCLASS 0224 /* match anything not in class */
# define MATCHREPL 0225 /* replacement on RHS for above */
/* right hand side items */
# define CANONNET 0226 /* canonical net, next token */
# define CANONHOST 0227 /* canonical host, next token */
# define CANONUSER 0230 /* canonical user, next N tokens */
# define CALLSUBR 0231 /* call another rewriting set */
/* conditionals in macros */
# define CONDIF 0232 /* conditional if-then */
# define CONDELSE 0233 /* conditional else */
# define CONDFI 0234 /* conditional fi */
/* bracket characters for host name lookup */
# define HOSTBEGIN 0235 /* hostname lookup begin */
# define HOSTEND 0236 /* hostname lookup end */
/* bracket characters for generalized lookup */
# define LOOKUPBEGIN 0205 /* generalized lookup begin */
# define LOOKUPEND 0206 /* generalized lookup end */
/* macro substitution character */
# define MACROEXPAND 0201 /* macro expansion */
# define MACRODEXPAND 0202 /* deferred macro expansion */
/* to make the code clearer */
# define MATCHZERO CANONHOST
/* external <==> internal mapping table */
struct metamac
{
char metaname; /* external code (after $) */
char metaval; /* internal code (as above) */
};
/*
** Information about currently open connections to mailers, or to
** hosts that we have looked up recently.
*/
# define MCI struct mailer_con_info
MCI
{
short mci_flags; /* flag bits, see below */
short mci_errno; /* error number on last connection */
short mci_exitstat; /* exit status from last connection */
short mci_state; /* SMTP state */
long mci_maxsize; /* max size this server will accept */
FILE *mci_in; /* input side of connection */
FILE *mci_out; /* output side of connection */
int mci_pid; /* process id of subordinate proc */
char *mci_phase; /* SMTP phase string */
struct mailer *mci_mailer; /* ptr to the mailer for this conn */
char *mci_host; /* host name */
time_t mci_lastuse; /* last usage time */
};
/* flag bits */
#define MCIF_VALID 000001 /* this entry is valid */
#define MCIF_TEMP 000002 /* don't cache this connection */
#define MCIF_CACHED 000004 /* currently in open cache */
#define MCIF_ESMTP 000010 /* this host speaks ESMTP */
#define MCIF_EXPN 000020 /* EXPN command supported */
#define MCIF_SIZE 000040 /* SIZE option supported */
#define MCIF_8BITMIME 000100 /* BODY=8BITMIME supported */
/* states */
#define MCIS_CLOSED 0 /* no traffic on this connection */
#define MCIS_OPENING 1 /* sending initial protocol */
#define MCIS_OPEN 2 /* open, initial protocol sent */
#define MCIS_ACTIVE 3 /* message being sent */
#define MCIS_QUITING 4 /* running quit protocol */
#define MCIS_SSD 5 /* service shutting down */
#define MCIS_ERROR 6 /* I/O error on connection */
/*
** Name canonification short circuit.
**
** If the name server for a host is down, the process of trying to
** canonify the name can hang. This is similar to (but alas, not
** identical to) looking up the name for delivery. This stab type
** caches the result of the name server lookup so we don't hang
** multiple times.
*/
#define NAMECANON struct _namecanon
NAMECANON
{
short nc_errno; /* cached errno */
short nc_herrno; /* cached h_errno */
short nc_stat; /* cached exit status code */
short nc_flags; /* flag bits */
char *nc_cname; /* the canonical name */
};
/* values for nc_flags */
#define NCF_VALID 0x0001 /* entry valid */
/*
** Mapping functions
**
** These allow arbitrary mappings in the config file. The idea
** (albeit not the implementation) comes from IDA sendmail.
*/
# define MAPCLASS struct _mapclass
# define MAP struct _map
/*
** An actual map.
*/
MAP
{
MAPCLASS *map_class; /* the class of this map */
char *map_mname; /* name of this map */
int map_mflags; /* flags, see below */
char *map_file; /* the (nominal) filename */
void *map_db1; /* the open database ptr */
void *map_db2; /* an "extra" database pointer */
char *map_app; /* to append to successful matches */
char *map_domain; /* the (nominal) NIS domain */
char *map_rebuild; /* program to run to do auto-rebuild */
};
/* bit values for map_flags */
# define MF_VALID 0x0001 /* this entry is valid */
# define MF_INCLNULL 0x0002 /* include null byte in key */
# define MF_OPTIONAL 0x0004 /* don't complain if map not found */
# define MF_NOFOLDCASE 0x0008 /* don't fold case in keys */
# define MF_MATCHONLY 0x0010 /* don't use the map value */
# define MF_OPEN 0x0020 /* this entry is open */
# define MF_WRITABLE 0x0040 /* open for writing */
# define MF_ALIAS 0x0080 /* this is an alias file */
# define MF_IMPL_HASH 0x1000 /* implicit: underlying hash database */
# define MF_IMPL_NDBM 0x2000 /* implicit: underlying NDBM database */
/*
** The class of a map -- essentially the functions to call
*/
MAPCLASS
{
char *map_cname; /* name of this map class */
char *map_ext; /* extension for database file */
short map_cflags; /* flag bits, see below */
bool (*map_parse)__P((MAP *, char *));
/* argument parsing function */
char *(*map_lookup)__P((MAP *, char *, char **, int *));
/* lookup function */
void (*map_store)__P((MAP *, char *, char *));
/* store function */
bool (*map_open)__P((MAP *, int));
/* open function */
void (*map_close)__P((MAP *));
/* close function */
};
/* bit values for map_cflags */
#define MCF_ALIASOK 0x0001 /* can be used for aliases */
#define MCF_ALIASONLY 0x0002 /* usable only for aliases */
#define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */
/*
** Symbol table definitions
*/
struct symtab
{
char *s_name; /* name to be entered */
char s_type; /* general type (see below) */
struct symtab *s_next; /* pointer to next in chain */
union
{
BITMAP sv_class; /* bit-map of word classes */
ADDRESS *sv_addr; /* pointer to address header */
MAILER *sv_mailer; /* pointer to mailer */
char *sv_alias; /* alias */
MAPCLASS sv_mapclass; /* mapping function class */
MAP sv_map; /* mapping function */
char *sv_hostsig; /* host signature */
MCI sv_mci; /* mailer connection info */
NAMECANON sv_namecanon; /* canonical name cache */
} s_value;
};
typedef struct symtab STAB;
/* symbol types */
# define ST_UNDEF 0 /* undefined type */
# define ST_CLASS 1 /* class map */
# define ST_ADDRESS 2 /* an address in parsed format */
# define ST_MAILER 3 /* a mailer header */
# define ST_ALIAS 4 /* an alias */
# define ST_MAPCLASS 5 /* mapping function class */
# define ST_MAP 6 /* mapping function */
# define ST_HOSTSIG 7 /* host signature */
# define ST_NAMECANON 8 /* cached canonical name */
# define ST_MCI 16 /* mailer connection info (offset) */
# define s_class s_value.sv_class
# define s_address s_value.sv_addr
# define s_mailer s_value.sv_mailer
# define s_alias s_value.sv_alias
# define s_mci s_value.sv_mci
# define s_mapclass s_value.sv_mapclass
# define s_hostsig s_value.sv_hostsig
# define s_map s_value.sv_map
# define s_namecanon s_value.sv_namecanon
extern STAB *stab __P((char *, int, int));
extern void stabapply __P((void (*)(STAB *, int), int));
/* opcodes to stab */
# define ST_FIND 0 /* find entry */
# define ST_ENTER 1 /* enter if not there */
/*
** STRUCT EVENT -- event queue.
**
** Maintained in sorted order.
**
** We store the pid of the process that set this event to insure
** that when we fork we will not take events intended for the parent.
*/
struct event
{
time_t ev_time; /* time of the function call */
int (*ev_func)__P((int));
/* function to call */
int ev_arg; /* argument to ev_func */
int ev_pid; /* pid that set this event */
struct event *ev_link; /* link to next item */
};
typedef struct event EVENT;
EXTERN EVENT *EventQueue; /* head of event queue */
/*
** Operation, send, and error modes
**
** The operation mode describes the basic operation of sendmail.
** This can be set from the command line, and is "send mail" by
** default.
**
** The send mode tells how to send mail. It can be set in the
** configuration file. It's setting determines how quickly the
** mail will be delivered versus the load on your system. If the
** -v (verbose) flag is given, it will be forced to SM_DELIVER
** mode.
**
** The error mode tells how to return errors.
*/
EXTERN char OpMode; /* operation mode, see below */
#define MD_DELIVER 'm' /* be a mail sender */
#define MD_SMTP 's' /* run SMTP on standard input */
#define MD_DAEMON 'd' /* run as a daemon */
#define MD_VERIFY 'v' /* verify: don't collect or deliver */
#define MD_TEST 't' /* test mode: resolve addrs only */
#define MD_INITALIAS 'i' /* initialize alias database */
#define MD_PRINT 'p' /* print the queue */
#define MD_FREEZE 'z' /* freeze the configuration file */
/* values for e_sendmode -- send modes */
#define SM_DELIVER 'i' /* interactive delivery */
#define SM_QUICKD 'j' /* deliver w/o queueing */
#define SM_FORK 'b' /* deliver in background */
#define SM_QUEUE 'q' /* queue, don't deliver */
#define SM_VERIFY 'v' /* verify only (used internally) */
/* used only as a parameter to sendall */
#define SM_DEFAULT '\0' /* unspecified, use SendMode */
/* values for e_errormode -- error handling modes */
#define EM_PRINT 'p' /* print errors */
#define EM_MAIL 'm' /* mail back errors */
#define EM_WRITE 'w' /* write back errors */
#define EM_BERKNET 'e' /* special berknet processing */
#define EM_QUIET 'q' /* don't print messages (stat only) */
/*
** Additional definitions
*/
/* Offset used to ensure that name server error * codes are unique */
#define MAX_ERRNO 100
/*
** Privacy flags
** These are bit values for the PrivacyFlags word.
*/
#define PRIV_PUBLIC 0 /* what have I got to hide? */
#define PRIV_NEEDMAILHELO 00001 /* insist on HELO for MAIL, at least */
#define PRIV_NEEDEXPNHELO 00002 /* insist on HELO for EXPN */
#define PRIV_NEEDVRFYHELO 00004 /* insist on HELO for VRFY */
#define PRIV_NOEXPN 00010 /* disallow EXPN command entirely */
#define PRIV_NOVRFY 00020 /* disallow VRFY command entirely */
#define PRIV_AUTHWARNINGS 00040 /* flag possible authorization probs */
#define PRIV_RESTRMAILQ 01000 /* restrict mailq command */
#define PRIV_GOAWAY 00777 /* don't give no info, anyway, anyhow */
/* struct defining such things */
struct prival
{
char *pv_name; /* name of privacy flag */
int pv_flag; /* numeric level */
};
/*
** Flags passed to remotename
*/
#define RF_SENDERADDR 0001 /* this is a sender address */
#define RF_HEADERADDR 0002 /* this is a header address */
#define RF_CANONICAL 0004 /* strip comment information */
#define RF_ADDDOMAIN 0010 /* OK to do domain extension */
/*
** Regular UNIX sockaddrs are too small to handle ISO addresses, so
** we are forced to declare a supertype here.
*/
union bigsockaddr
{
struct sockaddr sa; /* general version */
#ifdef NETINET
struct sockaddr_in sin; /* INET family */
#endif
#ifdef NETISO
struct sockaddr_iso siso; /* ISO family */
#endif
#ifdef NETNS
struct sockaddr_ns sns; /* XNS family */
#endif
#ifdef NETX25
struct sockaddr_x25 sx25; /* X.25 family */
#endif
};
#define SOCKADDR union bigsockaddr
/*
** Global variables.
*/
EXTERN bool FromFlag; /* if set, "From" person is explicit */
EXTERN bool MeToo; /* send to the sender also */
EXTERN bool IgnrDot; /* don't let dot end messages */
EXTERN bool SaveFrom; /* save leading "From" lines */
EXTERN bool Verbose; /* set if blow-by-blow desired */
EXTERN bool GrabTo; /* if set, get recipients from msg */
EXTERN bool NoReturn; /* don't return letter to sender */
EXTERN bool SuprErrs; /* set if we are suppressing errors */
EXTERN bool HoldErrs; /* only output errors to transcript */
EXTERN bool NoConnect; /* don't connect to non-local mailers */
EXTERN bool SuperSafe; /* be extra careful, even if expensive */
EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */
EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */
EXTERN bool CheckAliases; /* parse addresses during newaliases */
EXTERN bool NoAlias; /* suppress aliasing */
EXTERN bool UseNameServer; /* use internet domain name server */
EXTERN bool SevenBit; /* force 7-bit data */
EXTERN int SafeAlias; /* minutes to wait until @:@ in alias file */
EXTERN FILE *InChannel; /* input connection */
EXTERN FILE *OutChannel; /* output connection */
EXTERN uid_t RealUid; /* when Daemon, real uid of caller */
EXTERN gid_t RealGid; /* when Daemon, real gid of caller */
EXTERN uid_t DefUid; /* default uid to run as */
EXTERN gid_t DefGid; /* default gid to run as */
EXTERN char *DefUser; /* default user to run as (from DefUid) */
EXTERN int OldUmask; /* umask when sendmail starts up */
EXTERN int Errors; /* set if errors (local to single pass) */
EXTERN int ExitStat; /* exit status code */
EXTERN int AliasLevel; /* depth of aliasing */
EXTERN int LineNumber; /* line number in current input */
EXTERN int LogLevel; /* level of logging to perform */
EXTERN int FileMode; /* mode on files */
EXTERN int QueueLA; /* load average starting forced queueing */
EXTERN int RefuseLA; /* load average refusing connections are */
EXTERN int CurrentLA; /* current load average */
EXTERN long QueueFactor; /* slope of queue function */
EXTERN time_t QueueIntvl; /* intervals between running the queue */
EXTERN char *HelpFile; /* location of SMTP help file */
EXTERN char *ErrMsgFile; /* file to prepend to all error messages */
EXTERN char *StatFile; /* location of statistics summary */
EXTERN char *QueueDir; /* location of queue directory */
EXTERN char *FileName; /* name to print on error messages */
EXTERN char *SmtpPhase; /* current phase in SMTP processing */
EXTERN char *MyHostName; /* name of this host for SMTP messages */
EXTERN char *RealHostName; /* name of host we are talking to */
EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */
EXTERN char *CurHostName; /* current host we are dealing with */
EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */
EXTERN bool QuickAbort; /* .... but only if we want a quick abort */
EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */
EXTERN bool SendMIMEErrors; /* send error messages in MIME format */
EXTERN bool MatchGecos; /* look for user names in gecos field */
EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */
EXTERN char SpaceSub; /* substitution for <lwsp> */
EXTERN int PrivacyFlags; /* privacy flags */
extern char *ConfFile; /* location of configuration file [conf.c] */
extern char *FreezeFile; /* location of frozen memory image [conf.c] */
extern char *PidFile; /* location of proc id file [conf.c] */
extern ADDRESS NullAddress; /* a null (template) address [main.c] */
EXTERN long WkClassFact; /* multiplier for message class -> priority */
EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */
EXTERN long WkTimeFact; /* priority offset each time this job is run */
EXTERN char *UdbSpec; /* user database source spec */
EXTERN int MaxHopCount; /* max # of hops until bounce */
EXTERN int ConfigLevel; /* config file level */
EXTERN char *TimeZoneSpec; /* override time zone specification */
EXTERN char *ForwardPath; /* path to search for .forward files */
EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */
EXTERN char *FallBackMX; /* fall back MX host */
EXTERN long MaxMessageSize; /* advertised max size we will accept */
EXTERN char *PostMasterCopy; /* address to get errs cc's */
EXTERN int CheckpointInterval; /* queue file checkpoint interval */
EXTERN bool DontPruneRoutes; /* don't prune source routes */
EXTERN int MaxMciCache; /* maximum entries in MCI cache */
EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */
EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */
EXTERN char *QueueLimitSender; /* limit queue runs to this sender */
EXTERN char *QueueLimitId; /* limit queue runs to this id */
/*
** Timeouts
**
** Indicated values are the MINIMUM per RFC 1123 section 5.3.2.
*/
EXTERN struct
{
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_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) */
/* following are per message */
time_t to_q_return; /* queue return timeout */
time_t to_q_warning; /* queue warning timeout */
} TimeOuts;
/*
** Trace information
*/
/* trace vector and macros for debugging flags */
EXTERN u_char tTdvect[100];
# define tTd(flag, level) (tTdvect[flag] >= level)
# define tTdlevel(flag) (tTdvect[flag])
/*
** Miscellaneous information.
*/
/*
** 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
/*
** Declarations of useful functions
*/
extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *));
extern char *xalloc __P((int));
extern bool sameaddr __P((ADDRESS *, ADDRESS *));
extern FILE *dfopen __P((char *, int, int));
extern EVENT *setevent __P((time_t, int(*)(), int));
extern char *sfgets __P((char *, int, FILE *, time_t, char *));
extern char *queuename __P((ENVELOPE *, int));
extern time_t curtime __P(());
extern bool transienterror __P((int));
extern const char *errstring __P((int));
extern void expand __P((char *, char *, char *, ENVELOPE *));
extern void define __P((int, char *, ENVELOPE *));
extern char *macvalue __P((int, ENVELOPE *));
extern char **prescan __P((char *, int, char[], char **));
extern char *fgetfolded __P((char *, int, FILE *));
extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, ENVELOPE *));
extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *));
extern void dropenvelope __P((ENVELOPE *));
extern void clearenvelope __P((ENVELOPE *, int));
extern char *username __P(());
extern MCI *mci_get __P((char *, MAILER *));
extern char *pintvl __P((time_t, int));
extern char *map_rewrite __P((MAP *, char *, int, char **));
extern ADDRESS *getctladdr __P((ADDRESS *));
extern char *anynet_ntoa __P((SOCKADDR *));
extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *));
extern bool shouldqueue __P((long, time_t));
extern bool lockfile __P((int, char *, int));
extern char *hostsignature __P((MAILER *, char *, ENVELOPE *));
extern void openxscript __P((ENVELOPE *));
extern void closexscript __P((ENVELOPE *));
/* ellipsis is a different case though */
#ifdef __STDC__
extern void auth_warning(ENVELOPE *, const char *, ...);
extern void syserr(const char *, ...);
extern void usrerr(const char *, ...);
extern void message(const char *, ...);
extern void nmessage(const char *, ...);
#else
extern void auth_warning();
extern void syserr();
extern void usrerr();
extern void message();
extern void nmessage();
#endif