xref: /illumos-gate/usr/src/cmd/sendmail/src/sendmail.h (revision e9af4bc0)
1 /*
2  * Copyright (c) 1998-2009 Sendmail, Inc. and its suppliers.
3  *	All rights reserved.
4  * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
5  * Copyright (c) 1988, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * By using this file, you agree to the terms and conditions set
9  * forth in the LICENSE file which can be found at the top level of
10  * the sendmail distribution.
11  */
12 
13 /*
14 **  SENDMAIL.H -- MTA-specific definitions for sendmail.
15 */
16 
17 #ifndef _SENDMAIL_H
18 # define _SENDMAIL_H 1
19 
20 #ifndef MILTER
21 # define MILTER	1	/* turn on MILTER by default */
22 #endif /* MILTER */
23 
24 #ifdef _DEFINE
25 # define EXTERN
26 #else /* _DEFINE */
27 # define EXTERN extern
28 #endif /* _DEFINE */
29 
30 
31 #include <unistd.h>
32 
33 #include <stddef.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <ctype.h>
37 #include <setjmp.h>
38 #include <string.h>
39 #include <time.h>
40 # ifdef EX_OK
41 #  undef EX_OK			/* for SVr4.2 SMP */
42 # endif /* EX_OK */
43 
44 #include "sendmail/sendmail.h"
45 
46 /* profiling? */
47 #if MONCONTROL
48 # define SM_PROF(x)	moncontrol(x)
49 #else /* MONCONTROL */
50 # define SM_PROF(x)
51 #endif /* MONCONTROL */
52 
53 #ifdef _DEFINE
54 # ifndef lint
55 SM_UNUSED(static char SmailId[]) = "@(#)$Id: sendmail.h,v 8.1068 2009/12/18 17:08:01 ca Exp $";
56 # endif /* ! lint */
57 #endif /* _DEFINE */
58 
59 #include "bf.h"
60 #include "timers.h"
61 #include <sm/exc.h>
62 #include <sm/heap.h>
63 #include <sm/debug.h>
64 #include <sm/rpool.h>
65 #include <sm/io.h>
66 #include <sm/path.h>
67 #include <sm/signal.h>
68 #include <sm/clock.h>
69 #include <sm/mbdb.h>
70 #include <sm/errstring.h>
71 #include <sm/sysexits.h>
72 #include <sm/shm.h>
73 #include <sm/misc.h>
74 
75 #ifdef LOG
76 # include <syslog.h>
77 #endif /* LOG */
78 
79 
80 
81 # if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25
82 #  include <sys/socket.h>
83 # endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */
84 # if NETUNIX
85 #  include <sys/un.h>
86 # endif /* NETUNIX */
87 # if NETINET || NETINET6
88 #  include <netinet/in.h>
89 # endif /* NETINET || NETINET6 */
90 # if NETINET6
91 /*
92 **  There is no standard yet for IPv6 includes.
93 **  Specify OS specific implementation in conf.h
94 */
95 # endif /* NETINET6 */
96 # if NETISO
97 #  include <netiso/iso.h>
98 # endif /* NETISO */
99 # if NETNS
100 #  include <netns/ns.h>
101 # endif /* NETNS */
102 # if NETX25
103 #  include <netccitt/x25.h>
104 # endif /* NETX25 */
105 
106 # if NAMED_BIND
107 #  include <arpa/nameser.h>
108 #  ifdef NOERROR
109 #   undef NOERROR		/* avoid <sys/streams.h> conflict */
110 #  endif /* NOERROR */
111 #  include <resolv.h>
112 # else /* NAMED_BIND */
113 #   undef SM_SET_H_ERRNO
114 #   define SM_SET_H_ERRNO(err)
115 # endif /* NAMED_BIND */
116 
117 # if HESIOD
118 #  include <hesiod.h>
119 #  if !defined(HES_ER_OK) || defined(HESIOD_INTERFACES)
120 #   define HESIOD_INIT		/* support for the new interface */
121 #  endif /* !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) */
122 # endif /* HESIOD */
123 
124 #if STARTTLS
125 #  include <openssl/ssl.h>
126 # if !TLS_NO_RSA
127 #  define RSA_KEYLENGTH	512
128 # endif /* !TLS_NO_RSA */
129 #endif /* STARTTLS */
130 
131 #if SASL  /* include the sasl include files if we have them */
132 
133 
134 # if SASL == 2 || SASL >= 20000
135 #  include <sasl/sasl.h>
136 #  include <sasl/saslutil.h>
137 # else /* SASL == 2 || SASL >= 20000 */
138 #  include <sasl.h>
139 #  include <saslutil.h>
140 # endif /* SASL == 2 || SASL >= 20000 */
141 # if defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP)
142 #  define SASL_VERSION (SASL_VERSION_MAJOR * 10000)  + (SASL_VERSION_MINOR * 100) + SASL_VERSION_STEP
143 #  if SASL == 1 || SASL == 2
144 #   undef SASL
145 #   define SASL SASL_VERSION
146 #  else /* SASL == 1 || SASL == 2 */
147 #   if SASL != SASL_VERSION
148   ERROR README: -DSASL (SASL) does not agree with the version of the CYRUS_SASL library (SASL_VERSION)
149   ERROR README: see README!
150 #   endif /* SASL != SASL_VERSION */
151 #  endif /* SASL == 1 || SASL == 2 */
152 # else /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */
153 #  if SASL == 1
154   ERROR README: please set -DSASL to the version of the CYRUS_SASL library
155   ERROR README: see README!
156 #  endif /* SASL == 1 */
157 # endif /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */
158 #endif /* SASL */
159 
160 /*
161 **  Following are "sort of" configuration constants, but they should
162 **  be pretty solid on most architectures today.  They have to be
163 **  defined after <arpa/nameser.h> because some versions of that
164 **  file also define them.  In all cases, we can't use sizeof because
165 **  some systems (e.g., Crays) always treat everything as being at
166 **  least 64 bits.
167 */
168 
169 #ifndef INADDRSZ
170 # define INADDRSZ	4		/* size of an IPv4 address in bytes */
171 #endif /* ! INADDRSZ */
172 #ifndef IN6ADDRSZ
173 # define IN6ADDRSZ	16		/* size of an IPv6 address in bytes */
174 #endif /* ! IN6ADDRSZ */
175 #ifndef INT16SZ
176 # define INT16SZ	2		/* size of a 16 bit integer in bytes */
177 #endif /* ! INT16SZ */
178 #ifndef INT32SZ
179 # define INT32SZ	4		/* size of a 32 bit integer in bytes */
180 #endif /* ! INT32SZ */
181 #ifndef INADDR_LOOPBACK
182 # define INADDR_LOOPBACK	0x7f000001	/* loopback address */
183 #endif /* ! INADDR_LOOPBACK */
184 
185 /*
186 **  Error return from inet_addr(3), in case not defined in /usr/include.
187 */
188 
189 #ifndef INADDR_NONE
190 # define INADDR_NONE	0xffffffff
191 #endif /* ! INADDR_NONE */
192 
193 
194 /* (f)open() modes for queue files */
195 # define QF_O_EXTRA	0
196 
197 
198 /*
199 **  An 'argument class' describes the storage allocation status
200 **  of an object pointed to by an argument to a function.
201 */
202 
203 typedef enum
204 {
205 	A_HEAP,	/* the storage was allocated by malloc, and the
206 		 * ownership of the storage is ceded by the caller
207 		 * to the called function. */
208 	A_TEMP, /* The storage is temporary, and is only guaranteed
209 		 * to be valid for the duration of the function call. */
210 	A_PERM	/* The storage is 'permanent': this might mean static
211 		 * storage, or rpool storage. */
212 } ARGCLASS_T;
213 
214 /* forward references for prototypes */
215 typedef struct envelope	ENVELOPE;
216 typedef struct mailer	MAILER;
217 typedef struct queuegrp	QUEUEGRP;
218 
219 /*
220 **  Address structure.
221 **	Addresses are stored internally in this structure.
222 */
223 
224 struct address
225 {
226 	char		*q_paddr;	/* the printname for the address */
227 	char		*q_user;	/* user name */
228 	char		*q_ruser;	/* real user name, or NULL if q_user */
229 	char		*q_host;	/* host name */
230 	struct mailer	*q_mailer;	/* mailer to use */
231 	unsigned long	q_flags;	/* status flags, see below */
232 	uid_t		q_uid;		/* user-id of receiver (if known) */
233 	gid_t		q_gid;		/* group-id of receiver (if known) */
234 	char		*q_home;	/* home dir (local mailer only) */
235 	char		*q_fullname;	/* full name if known */
236 	struct address	*q_next;	/* chain */
237 	struct address	*q_alias;	/* address this results from */
238 	char		*q_owner;	/* owner of q_alias */
239 	struct address	*q_tchain;	/* temporary use chain */
240 #if PIPELINING
241 	struct address	*q_pchain;	/* chain for pipelining */
242 #endif /* PIPELINING */
243 	char		*q_finalrcpt;	/* Final-Recipient: DSN header */
244 	char		*q_orcpt;	/* ORCPT parameter from RCPT TO: line */
245 	char		*q_status;	/* status code for DSNs */
246 	char		*q_rstatus;	/* remote status message for DSNs */
247 	time_t		q_statdate;	/* date of status messages */
248 	char		*q_statmta;	/* MTA generating q_rstatus */
249 	short		q_state;	/* address state, see below */
250 	char		*q_signature;	/* MX-based sorting value */
251 	int		q_qgrp;		/* index into queue groups */
252 	int		q_qdir;		/* queue directory inside group */
253 	char		*q_message;	/* error message */
254 };
255 
256 typedef struct address ADDRESS;
257 
258 /* bit values for q_flags */
259 #define QGOODUID	0x00000001	/* the q_uid q_gid fields are good */
260 #define QPRIMARY	0x00000002	/* set from RCPT or argv */
261 #define QNOTREMOTE	0x00000004	/* address not for remote forwarding */
262 #define QSELFREF	0x00000008	/* this address references itself */
263 #define QBOGUSSHELL	0x00000010	/* user has no valid shell listed */
264 #define QUNSAFEADDR	0x00000020	/* address acquired via unsafe path */
265 #define QPINGONSUCCESS	0x00000040	/* give return on successful delivery */
266 #define QPINGONFAILURE	0x00000080	/* give return on failure */
267 #define QPINGONDELAY	0x00000100	/* give return on message delay */
268 #define QHASNOTIFY	0x00000200	/* propagate notify parameter */
269 #define QRELAYED	0x00000400	/* DSN: relayed to non-DSN aware sys */
270 #define QEXPANDED	0x00000800	/* DSN: undergone list expansion */
271 #define QDELIVERED	0x00001000	/* DSN: successful final delivery */
272 #define QDELAYED	0x00002000	/* DSN: message delayed */
273 #define QALIAS		0x00004000	/* expanded alias */
274 #define QBYTRACE	0x00008000	/* DeliverBy: trace */
275 #define QBYNDELAY	0x00010000	/* DeliverBy: notify, delay */
276 #define QBYNRELAY	0x00020000	/* DeliverBy: notify, relayed */
277 #define QTHISPASS	0x40000000	/* temp: address set this pass */
278 #define QRCPTOK		0x80000000	/* recipient() processed address */
279 
280 #define Q_PINGFLAGS	(QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY)
281 
282 /* values for q_state */
283 #define QS_OK		0		/* address ok (for now)/not yet tried */
284 #define QS_SENT		1		/* good address, delivery complete */
285 #define QS_BADADDR	2		/* illegal address */
286 #define QS_QUEUEUP	3		/* save address in queue */
287 #define QS_RETRY	4		/* retry delivery for next MX */
288 #define QS_VERIFIED	5		/* verified, but not expanded */
289 
290 /*
291 **  Notice: all of the following values are variations of QS_DONTSEND.
292 **	If new states are added, they must be inserted in the proper place!
293 **	See the macro definition of QS_IS_DEAD() down below.
294 */
295 
296 #define QS_DONTSEND	6		/* don't send to this address */
297 #define QS_EXPANDED	7		/* expanded */
298 #define QS_SENDER	8		/* message sender (MeToo) */
299 #define QS_CLONED	9		/* addr cloned to split envelope */
300 #define QS_DISCARDED	10		/* rcpt discarded (EF_DISCARD) */
301 #define QS_REPLACED	11		/* maplocaluser()/UserDB replaced */
302 #define QS_REMOVED	12		/* removed (removefromlist()) */
303 #define QS_DUPLICATE	13		/* duplicate suppressed */
304 #define QS_INCLUDED	14		/* :include: delivery */
305 #define QS_FATALERR	15		/* fatal error, don't deliver */
306 
307 /* address state testing primitives */
308 #define QS_IS_OK(s)		((s) == QS_OK)
309 #define QS_IS_SENT(s)		((s) == QS_SENT)
310 #define QS_IS_BADADDR(s)	((s) == QS_BADADDR)
311 #define QS_IS_QUEUEUP(s)	((s) == QS_QUEUEUP)
312 #define QS_IS_RETRY(s)		((s) == QS_RETRY)
313 #define QS_IS_VERIFIED(s)	((s) == QS_VERIFIED)
314 #define QS_IS_EXPANDED(s)	((s) == QS_EXPANDED)
315 #define QS_IS_REMOVED(s)	((s) == QS_REMOVED)
316 #define QS_IS_UNDELIVERED(s)	((s) == QS_OK || \
317 				 (s) == QS_QUEUEUP || \
318 				 (s) == QS_RETRY || \
319 				 (s) == QS_VERIFIED)
320 #define QS_IS_UNMARKED(s)	((s) == QS_OK || \
321 				 (s) == QS_RETRY)
322 #define QS_IS_SENDABLE(s)	((s) == QS_OK || \
323 				 (s) == QS_QUEUEUP || \
324 				 (s) == QS_RETRY)
325 #define QS_IS_ATTEMPTED(s)	((s) == QS_QUEUEUP || \
326 				 (s) == QS_RETRY || \
327 				 (s) == QS_SENT || \
328 				 (s) == QS_DISCARDED)
329 #define QS_IS_DEAD(s)		((s) >= QS_DONTSEND)
330 
331 
332 #define NULLADDR	((ADDRESS *) NULL)
333 
334 extern ADDRESS	NullAddress;	/* a null (template) address [main.c] */
335 
336 /* functions */
337 extern void	cataddr __P((char **, char **, char *, int, int, bool));
338 extern char	*crackaddr __P((char *, ENVELOPE *));
339 extern bool	emptyaddr __P((ADDRESS *));
340 extern ADDRESS	*getctladdr __P((ADDRESS *));
341 extern int	include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *));
342 extern bool	invalidaddr __P((char *, char *, bool));
343 extern ADDRESS	*parseaddr __P((char *, ADDRESS *, int, int, char **,
344 				ENVELOPE *, bool));
345 extern char	**prescan __P((char *, int, char[], int, char **, unsigned char *, bool));
346 extern void	printaddr __P((SM_FILE_T *, ADDRESS *, bool));
347 extern ADDRESS	*recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *));
348 extern char	*remotename __P((char *, MAILER *, int, int *, ENVELOPE *));
349 extern int	rewrite __P((char **, int, int, ENVELOPE *, int));
350 extern bool	sameaddr __P((ADDRESS *, ADDRESS *));
351 extern int	sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *));
352 #if MILTER
353 extern int	removefromlist __P((char *, ADDRESS **, ENVELOPE *));
354 #endif /* MILTER */
355 extern void	setsender __P((char *, ENVELOPE *, char **, int, bool));
356 typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *));
357 extern void	parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *,
358 			char *, char *args[], esmtp_args_F));
359 extern esmtp_args_F mail_esmtp_args;
360 extern esmtp_args_F rcpt_esmtp_args;
361 extern void	reset_mail_esmtp_args __P((ENVELOPE *));
362 
363 /* macro to simplify the common call to rewrite() */
364 #define REWRITE(pvp, rs, env)	rewrite(pvp, rs, 0, env, MAXATOM)
365 
366 /*
367 **  Token Tables for prescan
368 */
369 
370 extern unsigned char	ExtTokenTab[256];	/* external strings */
371 extern unsigned char	IntTokenTab[256];	/* internal strings */
372 
373 
374 /*
375 **  Mailer definition structure.
376 **	Every mailer known to the system is declared in this
377 **	structure.  It defines the pathname of the mailer, some
378 **	flags associated with it, and the argument vector to
379 **	pass to it.  The flags are defined in conf.c
380 **
381 **	The argument vector is expanded before actual use.  All
382 **	words except the first are passed through the macro
383 **	processor.
384 */
385 
386 struct mailer
387 {
388 	char	*m_name;	/* symbolic name of this mailer */
389 	char	*m_mailer;	/* pathname of the mailer to use */
390 	char	*m_mtatype;	/* type of this MTA */
391 	char	*m_addrtype;	/* type for addresses */
392 	char	*m_diagtype;	/* type for diagnostics */
393 	BITMAP256 m_flags;	/* status flags, see below */
394 	short	m_mno;		/* mailer number internally */
395 	short	m_nice;		/* niceness to run at (mostly for prog) */
396 	char	**m_argv;	/* template argument vector */
397 	short	m_sh_rwset;	/* rewrite set: sender header addresses */
398 	short	m_se_rwset;	/* rewrite set: sender envelope addresses */
399 	short	m_rh_rwset;	/* rewrite set: recipient header addresses */
400 	short	m_re_rwset;	/* rewrite set: recipient envelope addresses */
401 	char	*m_eol;		/* end of line string */
402 	long	m_maxsize;	/* size limit on message to this mailer */
403 	int	m_linelimit;	/* max # characters per line */
404 	int	m_maxdeliveries; /* max deliveries per mailer connection */
405 	char	*m_execdir;	/* directory to chdir to before execv */
406 	char	*m_rootdir;	/* directory to chroot to before execv */
407 	uid_t	m_uid;		/* UID to run as */
408 	gid_t	m_gid;		/* GID to run as */
409 	char	*m_defcharset;	/* default character set */
410 	time_t	m_wait;		/* timeout to wait for end */
411 	int	m_maxrcpt;	/* max recipients per envelope client-side */
412 	short	m_qgrp;		/* queue group for this mailer */
413 };
414 
415 /* bits for m_flags */
416 #define M_ESMTP		'a'	/* run Extended SMTP */
417 #define M_ALIASABLE	'A'	/* user can be LHS of an alias */
418 #define M_BLANKEND	'b'	/* ensure blank line at end of message */
419 #define M_STRIPBACKSL	'B'	/* strip all leading backslashes from user */
420 #define M_NOCOMMENT	'c'	/* don't include comment part of address */
421 #define M_CANONICAL	'C'	/* make addresses canonical "u@dom" */
422 #define M_NOBRACKET	'd'	/* never angle bracket envelope route-addrs */
423 		/*	'D'	   CF: include Date: */
424 #define M_EXPENSIVE	'e'	/* it costs to use this mailer.... */
425 #define M_ESCFROM	'E'	/* escape From lines to >From */
426 #define M_FOPT		'f'	/* mailer takes picky -f flag */
427 		/*	'F'	   CF: include From: or Resent-From: */
428 #define M_NO_NULL_FROM	'g'	/* sender of errors should be $g */
429 #define M_HST_UPPER	'h'	/* preserve host case distinction */
430 #define M_PREHEAD	'H'	/* MAIL11V3: preview headers */
431 #define M_UDBENVELOPE	'i'	/* do udbsender rewriting on envelope */
432 #define M_INTERNAL	'I'	/* SMTP to another sendmail site */
433 #define M_UDBRECIPIENT	'j'	/* do udbsender rewriting on recipient lines */
434 #define M_NOLOOPCHECK	'k'	/* don't check for loops in HELO command */
435 #define M_CHUNKING	'K'	/* CHUNKING: reserved for future use */
436 #define M_LOCALMAILER	'l'	/* delivery is to this host */
437 #define M_LIMITS	'L'	/* must enforce SMTP line limits */
438 #define M_MUSER		'm'	/* can handle multiple users at once */
439 		/*	'M'	   CF: include Message-Id: */
440 #define M_NHDR		'n'	/* don't insert From line */
441 #define M_MANYSTATUS	'N'	/* MAIL11V3: DATA returns multi-status */
442 #define M_RUNASRCPT	'o'	/* always run mailer as recipient */
443 #define M_FROMPATH	'p'	/* use reverse-path in MAIL FROM: */
444 		/*	'P'	   CF: include Return-Path: */
445 #define M_VRFY250	'q'	/* VRFY command returns 250 instead of 252 */
446 #define M_ROPT		'r'	/* mailer takes picky -r flag */
447 #define M_SECURE_PORT	'R'	/* try to send on a reserved TCP port */
448 #define M_STRIPQ	's'	/* strip quote chars from user/host */
449 #define M_SPECIFIC_UID	'S'	/* run as specific uid/gid */
450 #define M_USR_UPPER	'u'	/* preserve user case distinction */
451 #define M_UGLYUUCP	'U'	/* this wants an ugly UUCP from line */
452 #define M_CONTENT_LEN	'v'	/* add Content-Length: header (SVr4) */
453 		/*	'V'	   UIUC: !-relativize all addresses */
454 #define M_HASPWENT	'w'	/* check for /etc/passwd entry */
455 #define M_NOHOSTSTAT	'W'	/* ignore long term host status information */
456 		/*	'x'	   CF: include Full-Name: */
457 #define M_XDOT		'X'	/* use hidden-dot algorithm */
458 #define M_LMTP		'z'	/* run Local Mail Transport Protocol */
459 #define M_DIALDELAY	'Z'	/* apply dial delay sleeptime */
460 #define M_NOMX		'0'	/* turn off MX lookups */
461 #define M_NONULLS	'1'	/* don't send null bytes */
462 #define M_FSMTP		'2'	/* force SMTP (no ESMTP even if offered) */
463 #define M_EBCDIC	'3'	/* extend Q-P encoding for EBCDIC */
464 #define M_TRYRULESET5	'5'	/* use ruleset 5 after local aliasing */
465 #define M_7BITHDRS	'6'	/* strip headers to 7 bits even in 8 bit path */
466 #define M_7BITS		'7'	/* use 7-bit path */
467 #define M_8BITS		'8'	/* force "just send 8" behaviour */
468 #define M_MAKE8BIT	'9'	/* convert 7 -> 8 bit if appropriate */
469 #define M_CHECKINCLUDE	':'	/* check for :include: files */
470 #define M_CHECKPROG	'|'	/* check for |program addresses */
471 #define M_CHECKFILE	'/'	/* check for /file addresses */
472 #define M_CHECKUDB	'@'	/* user can be user database key */
473 #define M_CHECKHDIR	'~'	/* SGI: check for valid home directory */
474 #define M_HOLD		'%'	/* Hold delivery until ETRN/-qI/-qR/-qS */
475 #define M_PLUS		'+'	/* Reserved: Used in mc for adding new flags */
476 #define M_MINUS		'-'	/* Reserved: Used in mc for removing flags */
477 
478 /* functions */
479 extern void	initerrmailers __P((void));
480 extern void	makemailer __P((char *));
481 extern void	makequeue __P((char *, bool));
482 extern void	runqueueevent __P((int));
483 #if _FFR_QUEUE_RUN_PARANOIA
484 extern bool	checkqueuerunner __P((void));
485 #endif /* _FFR_QUEUE_RUN_PARANOIA */
486 
487 EXTERN MAILER	*FileMailer;	/* ptr to *file* mailer */
488 EXTERN MAILER	*InclMailer;	/* ptr to *include* mailer */
489 EXTERN MAILER	*LocalMailer;	/* ptr to local mailer */
490 EXTERN MAILER	*ProgMailer;	/* ptr to program mailer */
491 EXTERN MAILER	*Mailer[MAXMAILERS + 1];
492 
493 /*
494 **  Queue group definition structure.
495 **	Every queue group known to the system is declared in this structure.
496 **	It defines the basic pathname of the queue group, some flags
497 **	associated with it, and the argument vector to pass to it.
498 */
499 
500 struct qpaths_s
501 {
502 	char	*qp_name;	/* name of queue dir, relative path */
503 	short	qp_subdirs;	/* use subdirs? */
504 	short	qp_fsysidx;	/* file system index of this directory */
505 # if SM_CONF_SHM
506 	int	qp_idx;		/* index into array for queue information */
507 # endif /* SM_CONF_SHM */
508 };
509 
510 typedef struct qpaths_s QPATHS;
511 
512 struct queuegrp
513 {
514 	char	*qg_name;	/* symbolic name of this queue group */
515 
516 	/*
517 	**  For now this is the same across all queue groups.
518 	**  Otherwise we have to play around with chdir().
519 	*/
520 
521 	char	*qg_qdir;	/* common component of queue directory */
522 	short	qg_index;	/* queue number internally, index in Queue[] */
523 	int	qg_maxqrun;	/* max # of jobs in 1 queuerun */
524 	int	qg_numqueues;	/* number of queues in this queue */
525 
526 	/*
527 	**  qg_queueintvl == 0 denotes that no individual value is used.
528 	**  Whatever accesses this must deal with "<= 0" as
529 	**  "not set, use appropriate default".
530 	*/
531 
532 	time_t	qg_queueintvl;	/* interval for queue runs */
533 	QPATHS	*qg_qpaths;	/* list of queue directories */
534 	BITMAP256 qg_flags;	/* status flags, see below */
535 	short	qg_nice;	/* niceness for queue run */
536 	int	qg_wgrp;	/* Assigned to this work group */
537 	int     qg_maxlist;	/* max items in work queue for this group */
538 	int     qg_curnum;	/* current number of queue for queue runs */
539 	int	qg_maxrcpt;	/* max recipients per envelope, 0==no limit */
540 
541 	time_t	qg_nextrun;	/* time for next queue runs */
542 #if _FFR_QUEUE_GROUP_SORTORDER
543 	short	qg_sortorder;	/* how do we sort this queuerun */
544 #endif /* _FFR_QUEUE_GROUP_SORTORDER */
545 #if 0
546 	long	qg_wkrcptfact;	/* multiplier for # recipients -> priority */
547 	long	qg_qfactor;	/* slope of queue function */
548 	bool	qg_doqueuerun;	/* XXX flag is it time to do a queuerun */
549 #endif /* 0 */
550 };
551 
552 /* bits for qg_flags (XXX: unused as of now) */
553 #define QD_DEFINED	((char) 1)	/* queue group has been defined */
554 #define QD_FORK		'f'	/* fork queue runs */
555 
556 extern void	filesys_update __P((void));
557 #if _FFR_ANY_FREE_FS
558 extern bool	filesys_free __P((long));
559 #endif /* _FFR_ANY_FREE_FS */
560 
561 #if SASL
562 /*
563 **  SASL
564 */
565 
566 /* lines in authinfo file or index into SASL_AI_T */
567 # define SASL_WRONG	(-1)
568 # define SASL_USER	0	/* authorization id (user) */
569 # define SASL_AUTHID	1	/* authentication id */
570 # define SASL_PASSWORD	2	/* password fuer authid */
571 # define SASL_DEFREALM	3	/* realm to use */
572 # define SASL_MECHLIST	4	/* list of mechanisms to try */
573 # define SASL_ID_REALM	5	/* authid@defrealm */
574 
575 /*
576 **  Current mechanism; this is just used to convey information between
577 **  invocation of SASL callback functions.
578 **  It must be last in the list, because it's not allocated by us
579 **  and hence we don't free() it.
580 */
581 # define SASL_MECH	6
582 # define SASL_ENTRIES	7	/* number of entries in array */
583 
584 # define SASL_USER_BIT		(1 << SASL_USER)
585 # define SASL_AUTHID_BIT	(1 << SASL_AUTHID)
586 # define SASL_PASSWORD_BIT	(1 << SASL_PASSWORD)
587 # define SASL_DEFREALM_BIT	(1 << SASL_DEFREALM)
588 # define SASL_MECHLIST_BIT	(1 << SASL_MECHLIST)
589 
590 /* authenticated? */
591 # define SASL_NOT_AUTH	0		/* not authenticated */
592 # define SASL_PROC_AUTH	1		/* in process of authenticating */
593 # define SASL_IS_AUTH	2		/* authenticated */
594 
595 /* SASL options */
596 # define SASL_AUTH_AUTH	0x1000		/* use auth= only if authenticated */
597 # if SASL >= 20101
598 #  define SASL_SEC_MASK	SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */
599 # else /* SASL >= 20101 */
600 #  define SASL_SEC_MASK	0x0fff		/* mask for SASL_SEC_* values: sasl.h */
601 #  if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \
602 	(SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \
603 	(SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \
604 	(SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \
605 	(SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \
606 	(SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0
607 ERROR: change SASL_SEC_MASK_ notify sendmail.org!
608 #  endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */
609 # endif /* SASL >= 20101 */
610 # define MAXOUTLEN 8192	/* length of output buffer, should be 2^n */
611 
612 /* functions */
613 extern char	*intersect __P((char *, char *, SM_RPOOL_T *));
614 extern char	*iteminlist __P((char *, char *, char *));
615 # if SASL >= 20000
616 extern int	proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *));
617 extern int	safesaslfile __P((void *, const char *, sasl_verify_type_t));
618 # else /* SASL >= 20000 */
619 extern int	proxy_policy __P((void *, const char *, const char *, const char **, const char **));
620 #  if SASL > 10515
621 extern int	safesaslfile __P((void *, char *, int));
622 #  else /* SASL > 10515 */
623 extern int	safesaslfile __P((void *, char *));
624 #  endif /* SASL > 10515 */
625 # endif /* SASL >= 20000 */
626 extern void	stop_sasl_client __P((void));
627 
628 /* structure to store authinfo */
629 typedef char *SASL_AI_T[SASL_ENTRIES];
630 
631 EXTERN char	*AuthMechanisms;	/* AUTH mechanisms */
632 EXTERN char	*AuthRealm;	/* AUTH realm */
633 EXTERN char	*SASLInfo;	/* file with AUTH info */
634 EXTERN int	SASLOpts;	/* options for SASL */
635 EXTERN int	MaxSLBits;	/* max. encryption bits for SASL */
636 #endif /* SASL */
637 
638 /*
639 **  Structure to store macros.
640 */
641 typedef struct
642 {
643 	SM_RPOOL_T	*mac_rpool;		/* resource pool */
644 	BITMAP256	mac_allocated;		/* storage has been alloc()? */
645 	char		*mac_table[MAXMACROID + 1];	/* macros */
646 } MACROS_T;
647 
648 EXTERN MACROS_T		GlobalMacros;
649 
650 /*
651 **  Information about currently open connections to mailers, or to
652 **  hosts that we have looked up recently.
653 */
654 
655 #define MCI		struct mailer_con_info
656 
657 MCI
658 {
659 	unsigned long	mci_flags;	/* flag bits, see below */
660 	short		mci_errno;	/* error number on last connection */
661 	short		mci_herrno;	/* h_errno from last DNS lookup */
662 	short		mci_exitstat;	/* exit status from last connection */
663 	short		mci_state;	/* SMTP state */
664 	int		mci_deliveries;	/* delivery attempts for connection */
665 	long		mci_maxsize;	/* max size this server will accept */
666 	SM_FILE_T	*mci_in;	/* input side of connection */
667 	SM_FILE_T	*mci_out;	/* output side of connection */
668 	pid_t		mci_pid;	/* process id of subordinate proc */
669 	char		*mci_phase;	/* SMTP phase string */
670 	struct mailer	*mci_mailer;	/* ptr to the mailer for this conn */
671 	char		*mci_host;	/* host name */
672 	char		*mci_status;	/* DSN status to be copied to addrs */
673 	char		*mci_rstatus;	/* SMTP status to be copied to addrs */
674 	time_t		mci_lastuse;	/* last usage time */
675 	SM_FILE_T	*mci_statfile;	/* long term status file */
676 	char		*mci_heloname;	/* name to use as HELO arg */
677 	long		mci_min_by;	/* minimum DELIVERBY */
678 	bool		mci_retryrcpt;	/* tempfail for at least one rcpt */
679 	char		*mci_tolist;	/* list of valid recipients */
680 	SM_RPOOL_T	*mci_rpool;	/* resource pool */
681 #if PIPELINING
682 	int		mci_okrcpts;	/* number of valid recipients */
683 	ADDRESS		*mci_nextaddr;	/* next address for pipelined status */
684 #endif /* PIPELINING */
685 #if SASL
686 	SASL_AI_T	mci_sai;	/* authentication info */
687 	bool		mci_sasl_auth;	/* authenticated? */
688 	int		mci_sasl_string_len;
689 	char		*mci_sasl_string;	/* sasl reply string */
690 	char		*mci_saslcap;	/* SASL list of mechanisms */
691 	sasl_conn_t	*mci_conn;	/* SASL connection */
692 #endif /* SASL */
693 #if STARTTLS
694 	SSL		*mci_ssl;	/* SSL connection */
695 #endif /* STARTTLS */
696 	MACROS_T	mci_macro;	/* macro definitions */
697 };
698 
699 
700 /* flag bits */
701 #define MCIF_VALID	0x00000001	/* this entry is valid */
702 /* 0x00000002 unused, was MCIF_TEMP */
703 #define MCIF_CACHED	0x00000004	/* currently in open cache */
704 #define MCIF_ESMTP	0x00000008	/* this host speaks ESMTP */
705 #define MCIF_EXPN	0x00000010	/* EXPN command supported */
706 #define MCIF_SIZE	0x00000020	/* SIZE option supported */
707 #define MCIF_8BITMIME	0x00000040	/* BODY=8BITMIME supported */
708 #define MCIF_7BIT	0x00000080	/* strip this message to 7 bits */
709 /* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */
710 #define MCIF_INHEADER	0x00000200	/* currently outputing header */
711 #define MCIF_CVT8TO7	0x00000400	/* convert from 8 to 7 bits */
712 #define MCIF_DSN	0x00000800	/* DSN extension supported */
713 #define MCIF_8BITOK	0x00001000	/* OK to send 8 bit characters */
714 #define MCIF_CVT7TO8	0x00002000	/* convert from 7 to 8 bits */
715 #define MCIF_INMIME	0x00004000	/* currently reading MIME header */
716 #define MCIF_AUTH	0x00008000	/* AUTH= supported */
717 #define MCIF_AUTHACT	0x00010000	/* SASL (AUTH) active */
718 #define MCIF_ENHSTAT	0x00020000	/* ENHANCEDSTATUSCODES supported */
719 #define MCIF_PIPELINED	0x00040000	/* PIPELINING supported */
720 #define MCIF_VERB	0x00080000	/* VERB supported */
721 #if STARTTLS
722 #define MCIF_TLS	0x00100000	/* STARTTLS supported */
723 #define MCIF_TLSACT	0x00200000	/* STARTTLS active */
724 #define MCIF_EXTENS	(MCIF_EXPN | MCIF_SIZE | MCIF_8BITMIME | MCIF_DSN | MCIF_8BITOK | MCIF_AUTH | MCIF_ENHSTAT | MCIF_TLS)
725 #else /* STARTTLS */
726 #define MCIF_EXTENS	(MCIF_EXPN | MCIF_SIZE | MCIF_8BITMIME | MCIF_DSN | MCIF_8BITOK | MCIF_AUTH | MCIF_ENHSTAT)
727 #endif /* STARTTLS */
728 #define MCIF_DLVR_BY	0x00400000	/* DELIVERBY */
729 #if _FFR_IGNORE_EXT_ON_HELO
730 # define MCIF_HELO	0x00800000	/* we used HELO: ignore extensions */
731 #endif /* _FFR_IGNORE_EXT_ON_HELO */
732 #define MCIF_INLONGLINE 0x01000000	/* in the middle of a long line */
733 #define MCIF_ONLY_EHLO	0x10000000	/* use only EHLO in smtpinit */
734 
735 /* states */
736 #define MCIS_CLOSED	0		/* no traffic on this connection */
737 #define MCIS_OPENING	1		/* sending initial protocol */
738 #define MCIS_OPEN	2		/* open, initial protocol sent */
739 #define MCIS_MAIL	3		/* MAIL command sent */
740 #define MCIS_RCPT	4		/* RCPT commands being sent */
741 #define MCIS_DATA	5		/* DATA command sent */
742 #define MCIS_QUITING	6		/* running quit protocol */
743 #define MCIS_SSD	7		/* service shutting down */
744 #define MCIS_ERROR	8		/* I/O error on connection */
745 
746 /* functions */
747 extern void	mci_cache __P((MCI *));
748 extern void	mci_close __P((MCI *, char *where));
749 extern void	mci_dump __P((SM_FILE_T *, MCI *, bool));
750 extern void	mci_dump_all __P((SM_FILE_T *, bool));
751 extern void	mci_flush __P((bool, MCI *));
752 extern MCI	*mci_get __P((char *, MAILER *));
753 extern int	mci_lock_host __P((MCI *));
754 extern bool	mci_match __P((char *, MAILER *));
755 extern int	mci_print_persistent __P((char *, char *));
756 extern int	mci_purge_persistent __P((char *, char *));
757 extern MCI	**mci_scan __P((MCI *));
758 extern void	mci_setstat __P((MCI *, int, char *, char *));
759 extern void	mci_store_persistent __P((MCI *));
760 extern int	mci_traverse_persistent __P((int (*)(char *, char *), char *));
761 extern void	mci_unlock_host __P((MCI *));
762 
763 EXTERN int	MaxMciCache;		/* maximum entries in MCI cache */
764 EXTERN time_t	MciCacheTimeout;	/* maximum idle time on connections */
765 EXTERN time_t	MciInfoTimeout;		/* how long 'til we retry down hosts */
766 
767 /*
768 **  Header structure.
769 **	This structure is used internally to store header items.
770 */
771 
772 struct header
773 {
774 	char		*h_field;	/* the name of the field */
775 	char		*h_value;	/* the value of that field */
776 	struct header	*h_link;	/* the next header */
777 	unsigned char	h_macro;	/* include header if macro defined */
778 	unsigned long	h_flags;	/* status bits, see below */
779 	BITMAP256	h_mflags;	/* m_flags bits needed */
780 };
781 
782 typedef struct header	HDR;
783 
784 /*
785 **  Header information structure.
786 **	Defined in conf.c, this struct declares the header fields
787 **	that have some magic meaning.
788 */
789 
790 struct hdrinfo
791 {
792 	char		*hi_field;	/* the name of the field */
793 	unsigned long	hi_flags;	/* status bits, see below */
794 	char		*hi_ruleset;	/* validity check ruleset */
795 };
796 
797 extern struct hdrinfo	HdrInfo[];
798 
799 /* bits for h_flags and hi_flags */
800 #define H_EOH		0x00000001	/* field terminates header */
801 #define H_RCPT		0x00000002	/* contains recipient addresses */
802 #define H_DEFAULT	0x00000004	/* if another value is found, drop this */
803 #define H_RESENT	0x00000008	/* this address is a "Resent-..." address */
804 #define H_CHECK		0x00000010	/* check h_mflags against m_flags */
805 #define H_ACHECK	0x00000020	/* ditto, but always (not just default) */
806 #define H_FORCE		0x00000040	/* force this field, even if default */
807 #define H_TRACE		0x00000080	/* this field contains trace information */
808 #define H_FROM		0x00000100	/* this is a from-type field */
809 #define H_VALID		0x00000200	/* this field has a validated value */
810 #define H_RECEIPTTO	0x00000400	/* field has return receipt info */
811 #define H_ERRORSTO	0x00000800	/* field has error address info */
812 #define H_CTE		0x00001000	/* field is a content-transfer-encoding */
813 #define H_CTYPE		0x00002000	/* this is a content-type field */
814 #define H_BCC		0x00004000	/* Bcc: header: strip value or delete */
815 #define H_ENCODABLE	0x00008000	/* field can be RFC 1522 encoded */
816 #define H_STRIPCOMM	0x00010000	/* header check: strip comments */
817 #define H_BINDLATE	0x00020000	/* only expand macros at deliver */
818 #define H_USER		0x00040000	/* header came from the user/SMTP */
819 
820 /* bits for chompheader() */
821 #define CHHDR_DEF	0x0001	/* default header */
822 #define CHHDR_CHECK	0x0002	/* call ruleset for header */
823 #define CHHDR_USER	0x0004	/* header from user */
824 #define CHHDR_QUEUE	0x0008	/* header from queue file */
825 
826 /* functions */
827 extern void	addheader __P((char *, char *, int, ENVELOPE *, bool));
828 extern unsigned long	chompheader __P((char *, int, HDR **, ENVELOPE *));
829 extern bool	commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int));
830 extern HDR	*copyheader __P((HDR *, SM_RPOOL_T *));
831 extern void	eatheader __P((ENVELOPE *, bool, bool));
832 extern char	*hvalue __P((char *, HDR *));
833 extern void	insheader __P((int, char *, char *, int, ENVELOPE *, bool));
834 extern bool	isheader __P((char *));
835 extern bool	putfromline __P((MCI *, ENVELOPE *));
836 extern void	setupheaders __P((void));
837 
838 /*
839 **  Performance monitoring
840 */
841 
842 #define TIMERS		struct sm_timers
843 
844 TIMERS
845 {
846 	TIMER	ti_overall;	/* the whole process */
847 };
848 
849 
850 #define PUSHTIMER(l, t)	{ if (tTd(98, l)) pushtimer(&t); }
851 #define POPTIMER(l, t)	{ if (tTd(98, l)) poptimer(&t); }
852 
853 /*
854 **  Envelope structure.
855 **	This structure defines the message itself.  There is usually
856 **	only one of these -- for the message that we originally read
857 **	and which is our primary interest -- but other envelopes can
858 **	be generated during processing.  For example, error messages
859 **	will have their own envelope.
860 */
861 
862 struct envelope
863 {
864 	HDR		*e_header;	/* head of header list */
865 	long		e_msgpriority;	/* adjusted priority of this message */
866 	time_t		e_ctime;	/* time message appeared in the queue */
867 	char		*e_to;		/* (list of) target person(s) */
868 	ADDRESS		e_from;		/* the person it is from */
869 	char		*e_sender;	/* e_from.q_paddr w comments stripped */
870 	char		**e_fromdomain;	/* the domain part of the sender */
871 	ADDRESS		*e_sendqueue;	/* list of message recipients */
872 	ADDRESS		*e_errorqueue;	/* the queue for error responses */
873 
874 	/*
875 	**  Overflow detection is based on < 0, so don't change this
876 	**  to unsigned.  We don't use unsigned and == ULONG_MAX because
877 	**  some libc's don't have strtoul(), see mail_esmtp_args().
878 	*/
879 
880 	long		e_msgsize;	/* size of the message in bytes */
881 	char		*e_msgid;	/* message id (for logging) */
882 	unsigned long	e_flags;	/* flags, see below */
883 	int		e_nrcpts;	/* number of recipients */
884 	short		e_class;	/* msg class (priority, junk, etc.) */
885 	short		e_hopcount;	/* number of times processed */
886 	short		e_nsent;	/* number of sends since checkpoint */
887 	short		e_sendmode;	/* message send mode */
888 	short		e_errormode;	/* error return mode */
889 	short		e_timeoutclass;	/* message timeout class */
890 	bool		(*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int));
891 					/* function to put header of message */
892 	bool		(*e_putbody)__P((MCI *, ENVELOPE *, char *));
893 					/* function to put body of message */
894 	ENVELOPE	*e_parent;	/* the message this one encloses */
895 	ENVELOPE	*e_sibling;	/* the next envelope of interest */
896 	char		*e_bodytype;	/* type of message body */
897 	SM_FILE_T	*e_dfp;		/* data file */
898 	char		*e_id;		/* code for this entry in queue */
899 #if _FFR_SESSID
900 	char		*e_sessid;	/* session ID for this envelope */
901 #endif /* _FFR_SESSID */
902 	int		e_qgrp;		/* queue group (index into queues) */
903 	int		e_qdir;		/* index into queue directories */
904 	int		e_dfqgrp;	/* data file queue group index */
905 	int		e_dfqdir;	/* data file queue directory index */
906 	int		e_xfqgrp;	/* queue group (index into queues) */
907 	int		e_xfqdir;	/* index into queue directories (xf) */
908 	SM_FILE_T	*e_xfp;		/* transcript file */
909 	SM_FILE_T	*e_lockfp;	/* the lock file for this message */
910 	char		*e_message;	/* error message; readonly; NULL,
911 					 * or allocated from e_rpool */
912 	char		*e_statmsg;	/* stat msg (changes per delivery).
913 					 * readonly. NULL or allocated from
914 					 * e_rpool. */
915 	char		*e_quarmsg;	/* why envelope is quarantined */
916 	char		e_qfletter;	/* queue file letter on disk */
917 	char		*e_msgboundary;	/* MIME-style message part boundary */
918 	char		*e_origrcpt;	/* original recipient (one only) */
919 	char		*e_envid;	/* envelope id from MAIL FROM: line */
920 	char		*e_status;	/* DSN status for this message */
921 	time_t		e_dtime;	/* time of last delivery attempt */
922 	int		e_ntries;	/* number of delivery attempts */
923 	dev_t		e_dfdev;	/* data file device (crash recovery) */
924 	ino_t		e_dfino;	/* data file inode (crash recovery) */
925 	MACROS_T	e_macro;	/* macro definitions */
926 	MCI		*e_mci;		/* connection info */
927 	char		*e_auth_param;	/* readonly; NULL or static storage or
928 					 * allocated from e_rpool */
929 	TIMERS		e_timers;	/* per job timers */
930 	long		e_deliver_by;	/* deliver by */
931 	int		e_dlvr_flag;	/* deliver by flag */
932 	SM_RPOOL_T	*e_rpool;	/* resource pool for this envelope */
933 	unsigned int	e_features;	/* server features */
934 #if _FFR_MILTER_ENHSC
935 #define ENHSC_LEN	11
936 	char		e_enhsc[ENHSC_LEN];	/* enhanced status code */
937 #endif /* _FFR_MILTER_ENHSC */
938 };
939 
940 /* values for e_flags */
941 #define EF_OLDSTYLE	0x00000001L	/* use spaces (not commas) in hdrs */
942 #define EF_INQUEUE	0x00000002L	/* this message is fully queued */
943 #define EF_NO_BODY_RETN	0x00000004L	/* omit message body on error */
944 #define EF_CLRQUEUE	0x00000008L	/* disk copy is no longer needed */
945 #define EF_SENDRECEIPT	0x00000010L	/* send a return receipt */
946 #define EF_FATALERRS	0x00000020L	/* fatal errors occurred */
947 #define EF_DELETE_BCC	0x00000040L	/* delete Bcc: headers entirely */
948 #define EF_RESPONSE	0x00000080L	/* this is an error or return receipt */
949 #define EF_RESENT	0x00000100L	/* this message is being forwarded */
950 #define EF_VRFYONLY	0x00000200L	/* verify only (don't expand aliases) */
951 #define EF_WARNING	0x00000400L	/* warning message has been sent */
952 #define EF_QUEUERUN	0x00000800L	/* this envelope is from queue */
953 #define EF_GLOBALERRS	0x00001000L	/* treat errors as global */
954 #define EF_PM_NOTIFY	0x00002000L	/* send return mail to postmaster */
955 #define EF_METOO	0x00004000L	/* send to me too */
956 #define EF_LOGSENDER	0x00008000L	/* need to log the sender */
957 #define EF_NORECEIPT	0x00010000L	/* suppress all return-receipts */
958 #define EF_HAS8BIT	0x00020000L	/* at least one 8-bit char in body */
959 #define EF_NL_NOT_EOL	0x00040000L	/* don't accept raw NL as EOLine */
960 #define EF_CRLF_NOT_EOL	0x00080000L	/* don't accept CR-LF as EOLine */
961 #define EF_RET_PARAM	0x00100000L	/* RCPT command had RET argument */
962 #define EF_HAS_DF	0x00200000L	/* set when data file is instantiated */
963 #define EF_IS_MIME	0x00400000L	/* really is a MIME message */
964 #define EF_DONT_MIME	0x00800000L	/* never MIME this message */
965 #define EF_DISCARD	0x01000000L	/* discard the message */
966 #define EF_TOOBIG	0x02000000L	/* message is too big */
967 #define EF_SPLIT	0x04000000L	/* envelope has been split */
968 #define EF_UNSAFE	0x08000000L	/* unsafe: read from untrusted source */
969 #define EF_TOODEEP	0x10000000L	/* message is nested too deep */
970 
971 #define DLVR_NOTIFY	0x01
972 #define DLVR_RETURN	0x02
973 #define DLVR_TRACE	0x10
974 #define IS_DLVR_NOTIFY(e)	(((e)->e_dlvr_flag & DLVR_NOTIFY) != 0)
975 #define IS_DLVR_RETURN(e)	(((e)->e_dlvr_flag & DLVR_RETURN) != 0)
976 #define IS_DLVR_TRACE(e)	(((e)->e_dlvr_flag & DLVR_TRACE) != 0)
977 #define IS_DLVR_BY(e)		((e)->e_dlvr_flag != 0)
978 
979 #define BODYTYPE_NONE	(0)
980 #define BODYTYPE_7BIT	(1)
981 #define BODYTYPE_8BITMIME	(2)
982 #define BODYTYPE_ILLEGAL	(-1)
983 #define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME)
984 
985 extern ENVELOPE	BlankEnvelope;
986 
987 /* functions */
988 extern void	clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *));
989 extern int	dropenvelope __P((ENVELOPE *, bool, bool));
990 extern ENVELOPE	*newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *));
991 extern void	clrsessenvelope __P((ENVELOPE *));
992 extern void	printenvflags __P((ENVELOPE *));
993 extern bool	putbody __P((MCI *, ENVELOPE *, char *));
994 extern bool	putheader __P((MCI *, HDR *, ENVELOPE *, int));
995 
996 /*
997 **  Message priority classes.
998 **
999 **	The message class is read directly from the Priority: header
1000 **	field in the message.
1001 **
1002 **	CurEnv->e_msgpriority is the number of bytes in the message plus
1003 **	the creation time (so that jobs ``tend'' to be ordered correctly),
1004 **	adjusted by the message class, the number of recipients, and the
1005 **	amount of time the message has been sitting around.  This number
1006 **	is used to order the queue.  Higher values mean LOWER priority.
1007 **
1008 **	Each priority class point is worth WkClassFact priority points;
1009 **	each recipient is worth WkRecipFact priority points.  Each time
1010 **	we reprocess a message the priority is adjusted by WkTimeFact.
1011 **	WkTimeFact should normally decrease the priority so that jobs
1012 **	that have historically failed will be run later; thanks go to
1013 **	Jay Lepreau at Utah for pointing out the error in my thinking.
1014 **
1015 **	The "class" is this number, unadjusted by the age or size of
1016 **	this message.  Classes with negative representations will have
1017 **	error messages thrown away if they are not local.
1018 */
1019 
1020 struct priority
1021 {
1022 	char	*pri_name;	/* external name of priority */
1023 	int	pri_val;	/* internal value for same */
1024 };
1025 
1026 EXTERN int	NumPriorities;	/* pointer into Priorities */
1027 EXTERN struct priority	Priorities[MAXPRIORITIES];
1028 
1029 /*
1030 **  Rewrite rules.
1031 */
1032 
1033 struct rewrite
1034 {
1035 	char	**r_lhs;	/* pattern match */
1036 	char	**r_rhs;	/* substitution value */
1037 	struct rewrite	*r_next;/* next in chain */
1038 	int	r_line;		/* rule line in sendmail.cf */
1039 };
1040 
1041 /*
1042 **  Special characters in rewriting rules.
1043 **	These are used internally only.
1044 **	The COND* rules are actually used in macros rather than in
1045 **		rewriting rules, but are given here because they
1046 **		cannot conflict.
1047 */
1048 
1049 /* "out of band" indicator */
1050 /* sm/sendmail.h #define METAQUOTE ((unsigned char)0377) quotes the next octet */
1051 
1052 /* left hand side items */
1053 #define MATCHZANY	((unsigned char)0220)	/* match zero or more tokens */
1054 #define MATCHANY	((unsigned char)0221)	/* match one or more tokens */
1055 #define MATCHONE	((unsigned char)0222)	/* match exactly one token */
1056 #define MATCHCLASS	((unsigned char)0223)	/* match one token in a class */
1057 #define MATCHNCLASS	((unsigned char)0224)	/* match tokens not in class */
1058 
1059 /* right hand side items */
1060 #define MATCHREPL	((unsigned char)0225)	/* RHS replacement for above */
1061 #define CANONNET	((unsigned char)0226)	/* canonical net, next token */
1062 #define CANONHOST	((unsigned char)0227)	/* canonical host, next token */
1063 #define CANONUSER	((unsigned char)0230)	/* canonical user, next N tokens */
1064 #define CALLSUBR	((unsigned char)0231)	/* call another rewriting set */
1065 
1066 /* conditionals in macros (anywhere) */
1067 #define CONDIF		((unsigned char)0232)	/* conditional if-then */
1068 #define CONDELSE	((unsigned char)0233)	/* conditional else */
1069 #define CONDFI		((unsigned char)0234)	/* conditional fi */
1070 
1071 /* bracket characters for RHS host name lookup */
1072 #define HOSTBEGIN	((unsigned char)0235)	/* hostname lookup begin */
1073 #define HOSTEND		((unsigned char)0236)	/* hostname lookup end */
1074 
1075 /* bracket characters for RHS generalized lookup */
1076 #define LOOKUPBEGIN	((unsigned char)0205)	/* generalized lookup begin */
1077 #define LOOKUPEND	((unsigned char)0206)	/* generalized lookup end */
1078 
1079 /* macro substitution characters (anywhere) */
1080 #define MACROEXPAND	((unsigned char)0201)	/* macro expansion */
1081 #define MACRODEXPAND	((unsigned char)0202)	/* deferred macro expansion */
1082 
1083 /* to make the code clearer */
1084 #define MATCHZERO	CANONHOST
1085 
1086 #define MAXMATCH	9	/* max params per rewrite */
1087 #define MAX_MAP_ARGS	10	/* max arguments for map */
1088 
1089 /* external <==> internal mapping table */
1090 struct metamac
1091 {
1092 	char		metaname;	/* external code (after $) */
1093 	unsigned char	metaval;	/* internal code (as above) */
1094 };
1095 
1096 /* values for macros with external names only */
1097 #define MID_OPMODE	0202	/* operation mode */
1098 
1099 /* functions */
1100 #if SM_HEAP_CHECK
1101 extern void
1102 macdefine_tagged __P((
1103 	MACROS_T *_mac,
1104 	ARGCLASS_T _vclass,
1105 	int _id,
1106 	char *_value,
1107 	char *_file,
1108 	int _line,
1109 	int _group));
1110 # define macdefine(mac,c,id,v) \
1111 	macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group())
1112 #else /* SM_HEAP_CHECK */
1113 extern void
1114 macdefine __P((
1115 	MACROS_T *_mac,
1116 	ARGCLASS_T _vclass,
1117 	int _id,
1118 	char *_value));
1119 # define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v)
1120 #endif /* SM_HEAP_CHECK */
1121 extern void	macset __P((MACROS_T *, int, char *));
1122 #define macget(mac, i) (mac)->mac_table[i]
1123 extern void	expand __P((char *, char *, size_t, ENVELOPE *));
1124 extern int	macid_parse __P((char *, char **));
1125 #define macid(name)  macid_parse(name, NULL)
1126 extern char	*macname __P((int));
1127 extern char	*macvalue __P((int, ENVELOPE *));
1128 extern int	rscheck __P((char *, char *, char *, ENVELOPE *, int, int, char *, char *, ADDRESS *));
1129 extern int	rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int));
1130 extern void	setclass __P((int, char *));
1131 extern int	strtorwset __P((char *, char **, int));
1132 extern char	*translate_dollars __P((char *, char *, int *));
1133 extern bool	wordinclass __P((char *, int));
1134 
1135 /*
1136 **  Name canonification short circuit.
1137 **
1138 **	If the name server for a host is down, the process of trying to
1139 **	canonify the name can hang.  This is similar to (but alas, not
1140 **	identical to) looking up the name for delivery.  This stab type
1141 **	caches the result of the name server lookup so we don't hang
1142 **	multiple times.
1143 */
1144 
1145 #define NAMECANON	struct _namecanon
1146 
1147 NAMECANON
1148 {
1149 	short		nc_errno;	/* cached errno */
1150 	short		nc_herrno;	/* cached h_errno */
1151 	short		nc_stat;	/* cached exit status code */
1152 	short		nc_flags;	/* flag bits */
1153 	char		*nc_cname;	/* the canonical name */
1154 	time_t		nc_exp;		/* entry expires at */
1155 };
1156 
1157 /* values for nc_flags */
1158 #define NCF_VALID	0x0001	/* entry valid */
1159 
1160 /* hostsignature structure */
1161 
1162 struct hostsig_t
1163 {
1164 	char		*hs_sig;	/* hostsignature */
1165 	time_t		hs_exp;		/* entry expires at */
1166 };
1167 
1168 typedef struct hostsig_t HOSTSIG_T;
1169 
1170 /* functions */
1171 extern bool	getcanonname __P((char *, int, bool, int *));
1172 extern int	getmxrr __P((char *, char **, unsigned short *, bool, int *, bool, int *));
1173 extern char	*hostsignature __P((MAILER *, char *));
1174 extern int	getfallbackmxrr __P((char *));
1175 
1176 /*
1177 **  Mapping functions
1178 **
1179 **	These allow arbitrary mappings in the config file.  The idea
1180 **	(albeit not the implementation) comes from IDA sendmail.
1181 */
1182 
1183 #define MAPCLASS	struct _mapclass
1184 #define MAP		struct _map
1185 #define MAXMAPACTIONS	5		/* size of map_actions array */
1186 
1187 
1188 /*
1189 **  An actual map.
1190 */
1191 
1192 MAP
1193 {
1194 	MAPCLASS	*map_class;	/* the class of this map */
1195 	MAPCLASS	*map_orgclass;	/* the original class of this map */
1196 	char		*map_mname;	/* name of this map */
1197 	long		map_mflags;	/* flags, see below */
1198 	char		*map_file;	/* the (nominal) filename */
1199 	ARBPTR_T	map_db1;	/* the open database ptr */
1200 	ARBPTR_T	map_db2;	/* an "extra" database pointer */
1201 	char		*map_keycolnm;	/* key column name */
1202 	char		*map_valcolnm;	/* value column name */
1203 	unsigned char	map_keycolno;	/* key column number */
1204 	unsigned char	map_valcolno;	/* value column number */
1205 	char		map_coldelim;	/* column delimiter */
1206 	char		map_spacesub;	/* spacesub */
1207 	char		*map_app;	/* to append to successful matches */
1208 	char		*map_tapp;	/* to append to "tempfail" matches */
1209 	char		*map_domain;	/* the (nominal) NIS domain */
1210 	char		*map_rebuild;	/* program to run to do auto-rebuild */
1211 	time_t		map_mtime;	/* last database modification time */
1212 	time_t		map_timeout;	/* timeout for map accesses */
1213 	int		map_retry;	/* # of retries for map accesses */
1214 	pid_t		map_pid;	/* PID of process which opened map */
1215 	int		map_lockfd;	/* auxiliary lock file descriptor */
1216 	short		map_specificity;	/* specificity of aliases */
1217 	MAP		*map_stack[MAXMAPSTACK];   /* list for stacked maps */
1218 	short		map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */
1219 };
1220 
1221 
1222 /* bit values for map_mflags */
1223 #define MF_VALID	0x00000001	/* this entry is valid */
1224 #define MF_INCLNULL	0x00000002	/* include null byte in key */
1225 #define MF_OPTIONAL	0x00000004	/* don't complain if map not found */
1226 #define MF_NOFOLDCASE	0x00000008	/* don't fold case in keys */
1227 #define MF_MATCHONLY	0x00000010	/* don't use the map value */
1228 #define MF_OPEN		0x00000020	/* this entry is open */
1229 #define MF_WRITABLE	0x00000040	/* open for writing */
1230 #define MF_ALIAS	0x00000080	/* this is an alias file */
1231 #define MF_TRY0NULL	0x00000100	/* try with no null byte */
1232 #define MF_TRY1NULL	0x00000200	/* try with the null byte */
1233 #define MF_LOCKED	0x00000400	/* this map is currently locked */
1234 #define MF_ALIASWAIT	0x00000800	/* alias map in aliaswait state */
1235 #define MF_IMPL_HASH	0x00001000	/* implicit: underlying hash database */
1236 #define MF_IMPL_NDBM	0x00002000	/* implicit: underlying NDBM database */
1237 /* 0x00004000	*/
1238 #define MF_APPEND	0x00008000	/* append new entry on rebuild */
1239 #define MF_KEEPQUOTES	0x00010000	/* don't dequote key before lookup */
1240 #define MF_NODEFER	0x00020000	/* don't defer if map lookup fails */
1241 #define MF_REGEX_NOT	0x00040000	/* regular expression negation */
1242 #define MF_DEFER	0x00080000	/* don't lookup map in defer mode */
1243 #define MF_SINGLEMATCH	0x00100000	/* successful only if match one key */
1244 #define MF_SINGLEDN	0x00200000	/* only one match, but multi values */
1245 #define MF_FILECLASS	0x00400000	/* this is a file class map */
1246 #define MF_OPENBOGUS	0x00800000	/* open failed, don't call map_close */
1247 #define MF_CLOSING	0x01000000	/* map is being closed */
1248 
1249 #define DYNOPENMAP(map) if (!bitset(MF_OPEN, (map)->map_mflags)) \
1250 	{	\
1251 		if (!openmap(map))	\
1252 			return NULL;	\
1253 	}
1254 
1255 
1256 /* indices for map_actions */
1257 #define MA_NOTFOUND	0		/* member map returned "not found" */
1258 #define MA_UNAVAIL	1		/* member map is not available */
1259 #define MA_TRYAGAIN	2		/* member map returns temp failure */
1260 
1261 /* macros to handle MapTempFail */
1262 #define BIT_IS_MTP	0x01	/* temp.failure occurred */
1263 #define BIT_ASK_MTP	0x02	/* do we care about MapTempFail? */
1264 #define RESET_MAPTEMPFAIL	MapTempFail = 0
1265 #define INIT_MAPTEMPFAIL	MapTempFail = BIT_ASK_MTP
1266 #define SET_MAPTEMPFAIL		MapTempFail |= BIT_IS_MTP
1267 #define IS_MAPTEMPFAIL		bitset(BIT_IS_MTP, MapTempFail)
1268 #define ASK_MAPTEMPFAIL		bitset(BIT_ASK_MTP, MapTempFail)
1269 
1270 /*
1271 **  The class of a map -- essentially the functions to call
1272 */
1273 
1274 MAPCLASS
1275 {
1276 	char	*map_cname;		/* name of this map class */
1277 	char	*map_ext;		/* extension for database file */
1278 	short	map_cflags;		/* flag bits, see below */
1279 	bool	(*map_parse)__P((MAP *, char *));
1280 					/* argument parsing function */
1281 	char	*(*map_lookup)__P((MAP *, char *, char **, int *));
1282 					/* lookup function */
1283 	void	(*map_store)__P((MAP *, char *, char *));
1284 					/* store function */
1285 	bool	(*map_open)__P((MAP *, int));
1286 					/* open function */
1287 	void	(*map_close)__P((MAP *));
1288 					/* close function */
1289 };
1290 
1291 /* bit values for map_cflags */
1292 #define MCF_ALIASOK	0x0001		/* can be used for aliases */
1293 #define MCF_ALIASONLY	0x0002		/* usable only for aliases */
1294 #define MCF_REBUILDABLE	0x0004		/* can rebuild alias files */
1295 #define MCF_OPTFILE	0x0008		/* file name is optional */
1296 #define MCF_NOTPERSIST	0x0010		/* don't keep map open all the time */
1297 
1298 /* functions */
1299 extern void	closemaps __P((bool));
1300 extern bool	impl_map_open __P((MAP *, int));
1301 extern void	initmaps __P((void));
1302 extern MAP	*makemapentry __P((char *));
1303 extern void	maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *));
1304 extern char	*map_rewrite __P((MAP *, const char *, size_t, char **));
1305 #if NETINFO
1306 extern char	*ni_propval __P((char *, char *, char *, char *, int));
1307 #endif /* NETINFO */
1308 extern bool	openmap __P((MAP *));
1309 extern int	udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *));
1310 #if USERDB
1311 extern void	_udbx_close __P((void));
1312 extern char	*udbsender __P((char *, SM_RPOOL_T *));
1313 #endif /* USERDB */
1314 
1315 /*
1316 **  LDAP related items
1317 */
1318 #if LDAPMAP
1319 /* struct defining LDAP Auth Methods */
1320 struct lamvalues
1321 {
1322 	char	*lam_name;	/* name of LDAP auth method */
1323 	int	lam_code;	/* numeric code */
1324 };
1325 
1326 /* struct defining LDAP Alias Dereferencing */
1327 struct ladvalues
1328 {
1329 	char	*lad_name;	/* name of LDAP alias dereferencing method */
1330 	int	lad_code;	/* numeric code */
1331 };
1332 
1333 /* struct defining LDAP Search Scope */
1334 struct lssvalues
1335 {
1336 	char	*lss_name;	/* name of LDAP search scope */
1337 	int	lss_code;	/* numeric code */
1338 };
1339 
1340 /* functions */
1341 extern bool	ldapmap_parseargs __P((MAP *, char *));
1342 extern void	ldapmap_set_defaults __P((char *));
1343 #endif /* LDAPMAP */
1344 
1345 /*
1346 **  PH related items
1347 */
1348 
1349 #if PH_MAP
1350 
1351 # include <phclient.h>
1352 
1353 struct ph_map_struct
1354 {
1355 	char	*ph_servers;	 /* list of ph servers */
1356 	char	*ph_field_list;	 /* list of fields to search for match */
1357 	PH	*ph;		 /* PH server handle */
1358 	int	ph_fastclose;	 /* send "quit" command on close */
1359 	time_t	ph_timeout;	 /* timeout interval */
1360 };
1361 typedef struct ph_map_struct	PH_MAP_STRUCT;
1362 
1363 #endif /* PH_MAP */
1364 
1365 /*
1366 **  Regular UNIX sockaddrs are too small to handle ISO addresses, so
1367 **  we are forced to declare a supertype here.
1368 */
1369 
1370 #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25
1371 union bigsockaddr
1372 {
1373 	struct sockaddr		sa;	/* general version */
1374 # if NETUNIX
1375 	struct sockaddr_un	sunix;	/* UNIX family */
1376 # endif /* NETUNIX */
1377 # if NETINET
1378 	struct sockaddr_in	sin;	/* INET family */
1379 # endif /* NETINET */
1380 # if NETINET6
1381 	struct sockaddr_in6	sin6;	/* INET/IPv6 */
1382 # endif /* NETINET6 */
1383 # if NETISO
1384 	struct sockaddr_iso	siso;	/* ISO family */
1385 # endif /* NETISO */
1386 # if NETNS
1387 	struct sockaddr_ns	sns;	/* XNS family */
1388 # endif /* NETNS */
1389 # if NETX25
1390 	struct sockaddr_x25	sx25;	/* X.25 family */
1391 # endif /* NETX25 */
1392 };
1393 
1394 # define SOCKADDR	union bigsockaddr
1395 
1396 /* functions */
1397 extern char	*anynet_ntoa __P((SOCKADDR *));
1398 # if NETINET6
1399 extern char	*anynet_ntop __P((struct in6_addr *, char *, size_t));
1400 extern int	anynet_pton __P((int, const char *, void *));
1401 # endif /* NETINET6 */
1402 extern char	*hostnamebyanyaddr __P((SOCKADDR *));
1403 extern char	*validate_connection __P((SOCKADDR *, char *, ENVELOPE *));
1404 # if SASL >= 20000
1405 extern bool	iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned));
1406 # endif /* SASL >= 20000 */
1407 
1408 #endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */
1409 
1410 /*
1411 **  Process List (proclist)
1412 */
1413 
1414 #define NO_PID		((pid_t) 0)
1415 #ifndef PROC_LIST_SEG
1416 # define PROC_LIST_SEG	32		/* number of pids to alloc at a time */
1417 #endif /* ! PROC_LIST_SEG */
1418 
1419 /* process types */
1420 #define PROC_NONE		0
1421 #define PROC_DAEMON		1
1422 #define PROC_DAEMON_CHILD	2
1423 #define PROC_QUEUE		3
1424 #define PROC_QUEUE_CHILD	3
1425 #define PROC_CONTROL		4
1426 #define PROC_CONTROL_CHILD	5
1427 
1428 /* functions */
1429 extern void	proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *));
1430 extern void	proc_list_clear __P((void));
1431 extern void	proc_list_display __P((SM_FILE_T *, char *));
1432 extern void	proc_list_drop __P((pid_t, int, int *));
1433 extern void	proc_list_probe __P((void));
1434 extern void	proc_list_set __P((pid_t, char *));
1435 extern void	proc_list_signal __P((int, int));
1436 
1437 /*
1438 **  Symbol table definitions
1439 */
1440 
1441 struct symtab
1442 {
1443 	char		*s_name;	/* name to be entered */
1444 	short		s_symtype;	/* general type (see below) */
1445 	struct symtab	*s_next;	/* pointer to next in chain */
1446 	union
1447 	{
1448 		BITMAP256	sv_class;	/* bit-map of word classes */
1449 		ADDRESS		*sv_addr;	/* pointer to address header */
1450 		MAILER		*sv_mailer;	/* pointer to mailer */
1451 		char		*sv_alias;	/* alias */
1452 		MAPCLASS	sv_mapclass;	/* mapping function class */
1453 		MAP		sv_map;		/* mapping function */
1454 		HOSTSIG_T	sv_hostsig;	/* host signature */
1455 		MCI		sv_mci;		/* mailer connection info */
1456 		NAMECANON	sv_namecanon;	/* canonical name cache */
1457 		int		sv_macro;	/* macro name => id mapping */
1458 		int		sv_ruleset;	/* ruleset index */
1459 		struct hdrinfo	sv_header;	/* header metainfo */
1460 		char		*sv_service[MAXMAPSTACK]; /* service switch */
1461 #if LDAPMAP
1462 		MAP		*sv_lmap;	/* Maps for LDAP connection */
1463 #endif /* LDAPMAP */
1464 #if SOCKETMAP
1465 		MAP		*sv_socketmap;	/* Maps for SOCKET connection */
1466 #endif /* SOCKETMAP */
1467 #if MILTER
1468 		struct milter	*sv_milter;	/* milter filter name */
1469 #endif /* MILTER */
1470 		QUEUEGRP	*sv_queue;	/* pointer to queue */
1471 	}	s_value;
1472 };
1473 
1474 typedef struct symtab	STAB;
1475 
1476 /* symbol types */
1477 #define ST_UNDEF	0	/* undefined type */
1478 #define ST_CLASS	1	/* class map */
1479 #define ST_ADDRESS	2	/* an address in parsed format */
1480 #define ST_MAILER	3	/* a mailer header */
1481 #define ST_ALIAS	4	/* an alias */
1482 #define ST_MAPCLASS	5	/* mapping function class */
1483 #define ST_MAP		6	/* mapping function */
1484 #define ST_HOSTSIG	7	/* host signature */
1485 #define ST_NAMECANON	8	/* cached canonical name */
1486 #define ST_MACRO	9	/* macro name to id mapping */
1487 #define ST_RULESET	10	/* ruleset index */
1488 #define ST_SERVICE	11	/* service switch entry */
1489 #define ST_HEADER	12	/* special header flags */
1490 #if LDAPMAP
1491 # define ST_LMAP	13	/* List head of maps for LDAP connection */
1492 #endif /* LDAPMAP */
1493 #if MILTER
1494 # define ST_MILTER	14	/* milter filter */
1495 #endif /* MILTER */
1496 #define ST_QUEUE	15	/* a queue entry */
1497 
1498 #if SOCKETMAP
1499 # define ST_SOCKETMAP   16      /* List head of maps for SOCKET connection */
1500 #endif /* SOCKETMAP */
1501 
1502 /* This entry must be last */
1503 #define ST_MCI		17	/* mailer connection info (offset) */
1504 
1505 #define s_class		s_value.sv_class
1506 #define s_address	s_value.sv_addr
1507 #define s_mailer	s_value.sv_mailer
1508 #define s_alias		s_value.sv_alias
1509 #define s_mci		s_value.sv_mci
1510 #define s_mapclass	s_value.sv_mapclass
1511 #define s_hostsig	s_value.sv_hostsig
1512 #define s_map		s_value.sv_map
1513 #define s_namecanon	s_value.sv_namecanon
1514 #define s_macro		s_value.sv_macro
1515 #define s_ruleset	s_value.sv_ruleset
1516 #define s_service	s_value.sv_service
1517 #define s_header	s_value.sv_header
1518 #if LDAPMAP
1519 # define s_lmap		s_value.sv_lmap
1520 #endif /* LDAPMAP */
1521 #if SOCKETMAP
1522 # define s_socketmap    s_value.sv_socketmap
1523 #endif /* SOCKETMAP */
1524 #if MILTER
1525 # define s_milter	s_value.sv_milter
1526 #endif /* MILTER */
1527 #define s_quegrp	s_value.sv_queue
1528 
1529 /* opcodes to stab */
1530 #define ST_FIND		0	/* find entry */
1531 #define ST_ENTER	1	/* enter if not there */
1532 
1533 /* functions */
1534 extern STAB	*stab __P((char *, int, int));
1535 extern void	stabapply __P((void (*)(STAB *, int), int));
1536 
1537 /*
1538 **  Operation, send, error, and MIME modes
1539 **
1540 **	The operation mode describes the basic operation of sendmail.
1541 **	This can be set from the command line, and is "send mail" by
1542 **	default.
1543 **
1544 **	The send mode tells how to send mail.  It can be set in the
1545 **	configuration file.  Its setting determines how quickly the
1546 **	mail will be delivered versus the load on your system.  If the
1547 **	-v (verbose) flag is given, it will be forced to SM_DELIVER
1548 **	mode.
1549 **
1550 **	The error mode tells how to return errors.
1551 */
1552 
1553 #define MD_DELIVER	'm'		/* be a mail sender */
1554 #define MD_SMTP		's'		/* run SMTP on standard input */
1555 #define MD_ARPAFTP	'a'		/* obsolete ARPANET mode (Grey Book) */
1556 #define MD_DAEMON	'd'		/* run as a daemon */
1557 #define MD_FGDAEMON	'D'		/* run daemon in foreground */
1558 #define MD_LOCAL	'l'		/* like daemon, but localhost only */
1559 #define MD_VERIFY	'v'		/* verify: don't collect or deliver */
1560 #define MD_TEST		't'		/* test mode: resolve addrs only */
1561 #define MD_INITALIAS	'i'		/* initialize alias database */
1562 #define MD_PRINT	'p'		/* print the queue */
1563 #define MD_PRINTNQE	'P'		/* print number of entries in queue */
1564 #define MD_FREEZE	'z'		/* freeze the configuration file */
1565 #define MD_HOSTSTAT	'h'		/* print persistent host stat info */
1566 #define MD_PURGESTAT	'H'		/* purge persistent host stat info */
1567 #define MD_QUEUERUN	'q'		/* queue run */
1568 #define MD_CHECKCONFIG	'C'		/* check configuration file */
1569 
1570 #if _FFR_LOCAL_DAEMON
1571 EXTERN bool	LocalDaemon;
1572 #else /* _FFR_LOCAL_DAEMON */
1573 # define LocalDaemon	false
1574 #endif /* _FFR_LOCAL_DAEMON */
1575 
1576 /* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */
1577 
1578 /* values for e_sendmode -- send modes */
1579 #define SM_DELIVER	'i'		/* interactive delivery */
1580 #define SM_FORK		'b'		/* deliver in background */
1581 #if _FFR_DM_ONE
1582 #define SM_DM_ONE	'o' /* deliver first TA in background, then queue */
1583 #endif /* _FFR_DM_ONE */
1584 #define SM_QUEUE	'q'		/* queue, don't deliver */
1585 #define SM_DEFER	'd'		/* defer map lookups as well as queue */
1586 #define SM_VERIFY	'v'		/* verify only (used internally) */
1587 #define DM_NOTSET	(-1)	/* DeliveryMode (per daemon) option not set */
1588 
1589 #define WILL_BE_QUEUED(m)	((m) == SM_QUEUE || (m) == SM_DEFER)
1590 
1591 /* used only as a parameter to sendall */
1592 #define SM_DEFAULT	'\0'		/* unspecified, use SendMode */
1593 
1594 /* functions */
1595 extern void	set_delivery_mode __P((int, ENVELOPE *));
1596 
1597 /* values for e_errormode -- error handling modes */
1598 #define EM_PRINT	'p'		/* print errors */
1599 #define EM_MAIL		'm'		/* mail back errors */
1600 #define EM_WRITE	'w'		/* write back errors */
1601 #define EM_BERKNET	'e'		/* special berknet processing */
1602 #define EM_QUIET	'q'		/* don't print messages (stat only) */
1603 
1604 
1605 /* bit values for MimeMode */
1606 #define MM_CVTMIME	0x0001		/* convert 8 to 7 bit MIME */
1607 #define MM_PASS8BIT	0x0002		/* just send 8 bit data blind */
1608 #define MM_MIME8BIT	0x0004		/* convert 8-bit data to MIME */
1609 
1610 
1611 /* how to handle messages without any recipient addresses */
1612 #define NRA_NO_ACTION		0	/* just leave it as is */
1613 #define NRA_ADD_TO		1	/* add To: header */
1614 #define NRA_ADD_APPARENTLY_TO	2	/* add Apparently-To: header */
1615 #define NRA_ADD_BCC		3	/* add empty Bcc: header */
1616 #define NRA_ADD_TO_UNDISCLOSED	4	/* add To: undisclosed:; header */
1617 
1618 
1619 /* flags to putxline */
1620 #define PXLF_NOTHINGSPECIAL	0	/* no special mapping */
1621 #define PXLF_MAPFROM		0x0001	/* map From_ to >From_ */
1622 #define PXLF_STRIP8BIT		0x0002	/* strip 8th bit */
1623 #define PXLF_HEADER		0x0004	/* map newlines in headers */
1624 #define PXLF_NOADDEOL		0x0008	/* if EOL not present, don't add one */
1625 #define PXLF_STRIPMQUOTE	0x0010	/* strip METAQUOTEs */
1626 
1627 /*
1628 **  Privacy flags
1629 **	These are bit values for the PrivacyFlags word.
1630 */
1631 
1632 #define PRIV_PUBLIC		0		/* what have I got to hide? */
1633 #define PRIV_NEEDMAILHELO	0x00000001	/* insist on HELO for MAIL */
1634 #define PRIV_NEEDEXPNHELO	0x00000002	/* insist on HELO for EXPN */
1635 #define PRIV_NEEDVRFYHELO	0x00000004	/* insist on HELO for VRFY */
1636 #define PRIV_NOEXPN		0x00000008	/* disallow EXPN command */
1637 #define PRIV_NOVRFY		0x00000010	/* disallow VRFY command */
1638 #define PRIV_AUTHWARNINGS	0x00000020	/* flag possible auth probs */
1639 #define PRIV_NOVERB		0x00000040	/* disallow VERB command */
1640 #define PRIV_RESTRICTMAILQ	0x00010000	/* restrict mailq command */
1641 #define PRIV_RESTRICTQRUN	0x00020000	/* restrict queue run */
1642 #define PRIV_RESTRICTEXPAND	0x00040000	/* restrict alias/forward expansion */
1643 #define PRIV_NOETRN		0x00080000	/* disallow ETRN command */
1644 #define PRIV_NOBODYRETN		0x00100000	/* do not return bodies on bounces */
1645 #define PRIV_NORECEIPTS		0x00200000	/* disallow return receipts */
1646 #define PRIV_NOACTUALRECIPIENT	0x00400000 /* no X-Actual-Recipient in DSNs */
1647 
1648 /* don't give no info, anyway, anyhow (in the main SMTP transaction) */
1649 #define PRIV_GOAWAY		0x0000ffff
1650 
1651 /* struct defining such things */
1652 struct prival
1653 {
1654 	char		*pv_name;	/* name of privacy flag */
1655 	unsigned long	pv_flag;	/* numeric level */
1656 };
1657 
1658 EXTERN unsigned long	PrivacyFlags;	/* privacy flags */
1659 
1660 
1661 /*
1662 **  Flags passed to remotename, parseaddr, allocaddr, and buildaddr.
1663 */
1664 
1665 #define RF_SENDERADDR		0x001	/* this is a sender address */
1666 #define RF_HEADERADDR		0x002	/* this is a header address */
1667 #define RF_CANONICAL		0x004	/* strip comment information */
1668 #define RF_ADDDOMAIN		0x008	/* OK to do domain extension */
1669 #define RF_COPYPARSE		0x010	/* copy parsed user & host */
1670 #define RF_COPYPADDR		0x020	/* copy print address */
1671 #define RF_COPYALL		(RF_COPYPARSE|RF_COPYPADDR)
1672 #define RF_COPYNONE		0
1673 #define RF_RM_ADDR		0x040	/* address to be removed */
1674 
1675 /*
1676 **  Flags passed to rscheck
1677 */
1678 
1679 #define RSF_RMCOMM		0x0001	/* strip comments */
1680 #define RSF_UNSTRUCTURED	0x0002	/* unstructured, ignore syntax errors */
1681 #define RSF_COUNT		0x0004	/* count rejections (statistics)? */
1682 
1683 /*
1684 **  Flags passed to mime8to7 and putheader.
1685 */
1686 
1687 #define M87F_OUTER		0	/* outer context */
1688 #define M87F_NO8BIT		0x0001	/* can't have 8-bit in this section */
1689 #define M87F_DIGEST		0x0002	/* processing multipart/digest */
1690 #define M87F_NO8TO7		0x0004	/* don't do 8->7 bit conversions */
1691 
1692 /* functions */
1693 extern bool	mime7to8 __P((MCI *, HDR *, ENVELOPE *));
1694 extern int	mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int));
1695 
1696 /*
1697 **  Flags passed to returntosender.
1698 */
1699 
1700 #define RTSF_NO_BODY		0	/* send headers only */
1701 #define RTSF_SEND_BODY		0x0001	/* include body of message in return */
1702 #define RTSF_PM_BOUNCE		0x0002	/* this is a postmaster bounce */
1703 
1704 /* functions */
1705 extern int	returntosender __P((char *, ADDRESS *, int, ENVELOPE *));
1706 
1707 /*
1708 **  Mail Filters (milter)
1709 */
1710 
1711 /*
1712 **  32-bit type used by milter
1713 **  (needed by libmilter even if MILTER isn't defined)
1714 */
1715 
1716 typedef SM_INT32	mi_int32;
1717 
1718 #if MILTER
1719 # define SMFTO_WRITE	0		/* Timeout for sending information */
1720 # define SMFTO_READ	1		/* Timeout waiting for a response */
1721 # define SMFTO_EOM	2		/* Timeout for ACK/NAK to EOM */
1722 # define SMFTO_CONNECT	3		/* Timeout for connect() */
1723 
1724 # define SMFTO_NUM_TO	4		/* Total number of timeouts */
1725 
1726 struct milter
1727 {
1728 	char		*mf_name;	/* filter name */
1729 	BITMAP256	mf_flags;	/* MTA flags */
1730 	mi_int32	mf_fvers;	/* filter version */
1731 	mi_int32	mf_fflags;	/* filter flags */
1732 	mi_int32	mf_pflags;	/* protocol flags */
1733 	char		*mf_conn;	/* connection info */
1734 	int		mf_sock;	/* connected socket */
1735 	char		mf_state;	/* state of filter */
1736 	time_t		mf_timeout[SMFTO_NUM_TO]; /* timeouts */
1737 #if _FFR_MILTER_CHECK
1738 	/* for testing only */
1739 	mi_int32	mf_mta_prot_version;
1740 	mi_int32	mf_mta_prot_flags;
1741 	mi_int32	mf_mta_actions;
1742 #endif /* _FFR_MILTER_CHECK */
1743 };
1744 
1745 struct milters
1746 {
1747 	mi_int32	mis_flags;	/* filter flags */
1748 };
1749 typedef struct milters	milters_T;
1750 
1751 #define MIS_FL_NONE	0x00000000	/* no requirements... */
1752 #define MIS_FL_DEL_RCPT	0x00000001	/* can delete rcpt */
1753 #define MIS_FL_REJ_RCPT	0x00000002	/* can reject rcpt */
1754 
1755 
1756 /* MTA flags */
1757 # define SMF_REJECT		'R'	/* Reject connection on filter fail */
1758 # define SMF_TEMPFAIL		'T'	/* tempfail connection on failure */
1759 # define SMF_TEMPDROP		'4'	/* 421 connection on failure */
1760 
1761 EXTERN struct milter	*InputFilters[MAXFILTERS];
1762 EXTERN char		*InputFilterList;
1763 EXTERN int		MilterLogLevel;
1764 
1765 /* functions */
1766 extern void	setup_daemon_milters __P((void));
1767 #endif /* MILTER */
1768 
1769 /*
1770 **  Vendor codes
1771 **
1772 **	Vendors can customize sendmail to add special behaviour,
1773 **	generally for back compatibility.  Ideally, this should
1774 **	be set up in the .cf file using the "V" command.  However,
1775 **	it's quite reasonable for some vendors to want the default
1776 **	be their old version; this can be set using
1777 **		-DVENDOR_DEFAULT=VENDOR_xxx
1778 **	in the Makefile.
1779 **
1780 **	Vendors should apply to sendmail@sendmail.org for
1781 **	unique vendor codes.
1782 */
1783 
1784 #define VENDOR_BERKELEY	1	/* Berkeley-native configuration file */
1785 #define VENDOR_SUN	2	/* Sun-native configuration file */
1786 #define VENDOR_HP	3	/* Hewlett-Packard specific config syntax */
1787 #define VENDOR_IBM	4	/* IBM specific config syntax */
1788 #define VENDOR_SENDMAIL	5	/* Sendmail, Inc. specific config syntax */
1789 #define VENDOR_DEC	6	/* Compaq, DEC, Digital */
1790 
1791 /* prototypes for vendor-specific hook routines */
1792 extern void	vendor_daemon_setup __P((ENVELOPE *));
1793 extern void	vendor_set_uid __P((UID_T));
1794 
1795 
1796 /*
1797 **  Terminal escape codes.
1798 **
1799 **	To make debugging output clearer.
1800 */
1801 
1802 struct termescape
1803 {
1804 	char	*te_rv_on;	/* turn reverse-video on */
1805 	char	*te_under_on;	/* turn underlining on */
1806 	char	*te_normal;	/* revert to normal output */
1807 };
1808 
1809 /*
1810 **  Additional definitions
1811 */
1812 
1813 /*
1814 **  d_flags, see daemon.c
1815 **  general rule: lower case: required, upper case: No
1816 */
1817 
1818 #define D_AUTHREQ	'a'	/* authentication required */
1819 #define D_BINDIF	'b'	/* use if_addr for outgoing connection */
1820 #define D_CANONREQ	'c'	/* canonification required (cf) */
1821 #define D_IFNHELO	'h'	/* use if name for HELO */
1822 #define D_FQMAIL	'f'	/* fq sender address required (cf) */
1823 #define D_FQRCPT	'r'	/* fq recipient address required (cf) */
1824 #define D_SMTPS		's'	/* SMTP over SSL (smtps) */
1825 #define D_UNQUALOK	'u'	/* unqualified address is ok (cf) */
1826 #define D_NOAUTH	'A'	/* no AUTH */
1827 #define D_NOCANON	'C'	/* no canonification (cf) */
1828 #define D_NOETRN	'E'	/* no ETRN (MSA) */
1829 #define D_NOTLS		'S'	/* don't use STARTTLS */
1830 #define D_ETRNONLY	((char)0x01)	/* allow only ETRN (disk low) */
1831 #define D_OPTIONAL	'O'	/* optional socket */
1832 #define D_DISABLE	((char)0x02)	/* optional socket disabled */
1833 #define D_ISSET		((char)0x03)	/* this client struct is set */
1834 
1835 #if STARTTLS
1836 /*
1837 **  TLS
1838 */
1839 
1840 /* what to do in the TLS initialization */
1841 #define TLS_I_NONE	0x00000000	/* no requirements... */
1842 #define TLS_I_CERT_EX	0x00000001	/* cert must exist */
1843 #define TLS_I_CERT_UNR	0x00000002	/* cert must be g/o unreadable */
1844 #define TLS_I_KEY_EX	0x00000004	/* key must exist */
1845 #define TLS_I_KEY_UNR	0x00000008	/* key must be g/o unreadable */
1846 #define TLS_I_CERTP_EX	0x00000010	/* CA cert path must exist */
1847 #define TLS_I_CERTP_UNR	0x00000020	/* CA cert path must be g/o unreadable */
1848 #define TLS_I_CERTF_EX	0x00000040	/* CA cert file must exist */
1849 #define TLS_I_CERTF_UNR	0x00000080	/* CA cert file must be g/o unreadable */
1850 #define TLS_I_RSA_TMP	0x00000100	/* RSA TMP must be generated */
1851 #define TLS_I_USE_KEY	0x00000200	/* private key must usable */
1852 #define TLS_I_USE_CERT	0x00000400	/* certificate must be usable */
1853 #define TLS_I_VRFY_PATH	0x00000800	/* load verify path must succeed */
1854 #define TLS_I_VRFY_LOC	0x00001000	/* load verify default must succeed */
1855 #define TLS_I_CACHE	0x00002000	/* require cache */
1856 #define TLS_I_TRY_DH	0x00004000	/* try DH certificate */
1857 #define TLS_I_REQ_DH	0x00008000	/* require DH certificate */
1858 #define TLS_I_DHPAR_EX	0x00010000	/* require DH parameters */
1859 #define TLS_I_DHPAR_UNR	0x00020000	/* DH param. must be g/o unreadable */
1860 #define TLS_I_DH512	0x00040000	/* generate 512bit DH param */
1861 #define TLS_I_DH1024	0x00080000	/* generate 1024bit DH param */
1862 #define TLS_I_DH2048	0x00100000	/* generate 2048bit DH param */
1863 #define TLS_I_NO_VRFY	0x00200000	/* do not require authentication */
1864 #define TLS_I_KEY_OUNR	0x00400000	/* Key must be other unreadable */
1865 #define TLS_I_CRLF_EX	0x00800000	/* CRL file must exist */
1866 #define TLS_I_CRLF_UNR	0x01000000	/* CRL file must be g/o unreadable */
1867 
1868 /* require server cert */
1869 #define TLS_I_SRV_CERT	 (TLS_I_CERT_EX | TLS_I_KEY_EX | \
1870 			  TLS_I_KEY_UNR | TLS_I_KEY_OUNR | \
1871 			  TLS_I_CERTP_EX | TLS_I_CERTF_EX | \
1872 			  TLS_I_USE_KEY | TLS_I_USE_CERT | TLS_I_CACHE)
1873 
1874 /* server requirements */
1875 #define TLS_I_SRV	(TLS_I_SRV_CERT | TLS_I_RSA_TMP | TLS_I_VRFY_PATH | \
1876 			 TLS_I_VRFY_LOC | TLS_I_TRY_DH | TLS_I_DH512 | \
1877 			 TLS_I_CACHE)
1878 
1879 /* client requirements */
1880 #define TLS_I_CLT	(TLS_I_KEY_UNR | TLS_I_KEY_OUNR)
1881 
1882 #define TLS_AUTH_OK	0
1883 #define TLS_AUTH_NO	1
1884 #define TLS_AUTH_FAIL	(-1)
1885 
1886 /* functions */
1887 extern bool	init_tls_library __P((void));
1888 extern bool	inittls __P((SSL_CTX **, unsigned long, long, bool, char *, char *, char *, char *, char *));
1889 extern bool	initclttls __P((bool));
1890 extern void	setclttls __P((bool));
1891 extern bool	initsrvtls __P((bool));
1892 extern int	tls_get_info __P((SSL *, bool, char *, MACROS_T *, bool));
1893 extern int	endtls __P((SSL *, char *));
1894 extern void	tlslogerr __P((const char *));
1895 
1896 
1897 EXTERN char	*CACertPath;	/* path to CA certificates (dir. with hashes) */
1898 EXTERN char	*CACertFile;	/* file with CA certificate */
1899 EXTERN char	*CltCertFile;	/* file with client certificate */
1900 EXTERN char	*CltKeyFile;	/* file with client private key */
1901 # if _FFR_TLS_1
1902 EXTERN char	*CipherList;	/* list of ciphers */
1903 EXTERN char	*DHParams5;	/* file with DH parameters (512) */
1904 # endif /* _FFR_TLS_1 */
1905 EXTERN char	*DHParams;	/* file with DH parameters */
1906 EXTERN char	*RandFile;	/* source of random data */
1907 EXTERN char	*SrvCertFile;	/* file with server certificate */
1908 EXTERN char	*SrvKeyFile;	/* file with server private key */
1909 EXTERN char	*CRLFile;	/* file CRLs */
1910 #if _FFR_CRLPATH
1911 EXTERN char	*CRLPath;	/* path to CRLs (dir. with hashes) */
1912 #endif /* _FFR_CRLPATH */
1913 EXTERN unsigned long	TLS_Srv_Opts;	/* TLS server options */
1914 EXTERN long	Srv_SSL_Options, Clt_SSL_Options; /* SSL options */
1915 #endif /* STARTTLS */
1916 
1917 /*
1918 **  Queue related items
1919 */
1920 
1921 /* queue file names */
1922 #define ANYQFL_LETTER '?'
1923 #define QUARQF_LETTER 'h'
1924 #define DATAFL_LETTER 'd'
1925 #define XSCRPT_LETTER 'x'
1926 #define NORMQF_LETTER 'q'
1927 #define NEWQFL_LETTER 't'
1928 
1929 # define TEMPQF_LETTER 'T'
1930 # define LOSEQF_LETTER 'Q'
1931 
1932 /* queue sort order */
1933 #define QSO_BYPRIORITY	0		/* sort by message priority */
1934 #define QSO_BYHOST	1		/* sort by first host name */
1935 #define QSO_BYTIME	2		/* sort by submission time */
1936 #define QSO_BYFILENAME	3		/* sort by file name only */
1937 #define QSO_RANDOM	4		/* sort in random order */
1938 #define QSO_BYMODTIME	5		/* sort by modification time */
1939 #define QSO_NONE	6		/* do not sort */
1940 #if _FFR_RHS
1941 # define QSO_BYSHUFFLE	7		/* sort by shuffled host name */
1942 #endif /* _FFR_RHS */
1943 
1944 #define NOQGRP	(-1)		/* no queue group (yet) */
1945 #define ENVQGRP	(-2)		/* use queue group of envelope */
1946 #define NOAQGRP	(-3)		/* no queue group in addr (yet) */
1947 #define ISVALIDQGRP(x)	((x) >= 0)	/* valid queue group? */
1948 #define NOQDIR	(-1)		/* no queue directory (yet) */
1949 #define ENVQDIR	(-2)		/* use queue directory of envelope */
1950 #define NOAQDIR	(-3)		/* no queue directory in addr (yet) */
1951 #define ISVALIDQDIR(x)	((x) >= 0)	/* valid queue directory? */
1952 #define RS_QUEUEGROUP	"queuegroup"	/* ruleset for queue group selection */
1953 
1954 #define NOW	((time_t) (-1))		/* queue return: now */
1955 
1956 /* SuperSafe values */
1957 #define SAFE_NO			0	/* no fsync(): don't use... */
1958 #define SAFE_INTERACTIVE	1	/* limit fsync() in -odi */
1959 #define SAFE_REALLY		2	/* always fsync() */
1960 #define SAFE_REALLY_POSTMILTER	3	/* fsync() if milter says OK */
1961 
1962 /* QueueMode bits */
1963 #define QM_NORMAL		' '
1964 #define QM_QUARANTINE		'Q'
1965 #define QM_LOST			'L'
1966 
1967 /* Queue Run Limitations */
1968 struct queue_char
1969 {
1970 	char			*queue_match;	/* string to match */
1971 	bool			queue_negate;	/* or not match, if set */
1972 	struct queue_char	*queue_next;
1973 };
1974 
1975 /* run_work_group() flags */
1976 #define RWG_NONE		0x0000
1977 #define RWG_FORK		0x0001
1978 #define RWG_VERBOSE		0x0002
1979 #define RWG_PERSISTENT		0x0004
1980 #define RWG_FORCE		0x0008
1981 #define RWG_RUNALL		0x0010
1982 
1983 typedef struct queue_char	QUEUE_CHAR;
1984 
1985 EXTERN int	volatile CurRunners;	/* current number of runner children */
1986 EXTERN int	MaxQueueRun;	/* maximum number of jobs in one queue run */
1987 EXTERN int	MaxQueueChildren;	/* max # of forked queue children */
1988 EXTERN int	MaxRunnersPerQueue;	/* max # proc's active in queue group */
1989 EXTERN int	NiceQueueRun;	/* nice queue runs to this value */
1990 EXTERN int	NumQueue;	/* number of queue groups */
1991 EXTERN int	QueueFileMode;	/* mode on files in mail queue */
1992 EXTERN int	QueueMode;	/* which queue items to act upon */
1993 EXTERN int	QueueSortOrder;	/* queue sorting order algorithm */
1994 EXTERN time_t	MinQueueAge;	/* min delivery interval */
1995 #if _FFR_EXPDELAY
1996 EXTERN time_t	MaxQueueAge;	/* max delivery interval */
1997 #endif /* _FFR_EXPDELAY */
1998 EXTERN time_t	QueueIntvl;	/* intervals between running the queue */
1999 EXTERN char	*QueueDir;	/* location of queue directory */
2000 EXTERN QUEUE_CHAR	*QueueLimitId;		/* limit queue run to id */
2001 EXTERN QUEUE_CHAR	*QueueLimitQuarantine;	/* limit queue run to quarantine reason */
2002 EXTERN QUEUE_CHAR	*QueueLimitRecipient;	/* limit queue run to rcpt */
2003 EXTERN QUEUE_CHAR	*QueueLimitSender;	/* limit queue run to sender */
2004 EXTERN QUEUEGRP	*Queue[MAXQUEUEGROUPS + 1];	/* queue groups */
2005 
2006 /* functions */
2007 extern void	assign_queueid __P((ENVELOPE *));
2008 extern ADDRESS	*copyqueue __P((ADDRESS *, SM_RPOOL_T *));
2009 extern void	cleanup_queues __P((void));
2010 extern bool	doqueuerun __P((void));
2011 extern void	initsys __P((ENVELOPE *));
2012 extern void	loseqfile __P((ENVELOPE *, char *));
2013 extern int	name2qid __P((char *));
2014 extern char	*qid_printname __P((ENVELOPE *));
2015 extern char	*qid_printqueue __P((int, int));
2016 extern void	quarantine_queue __P((char *, int));
2017 extern char	*queuename __P((ENVELOPE *, int));
2018 extern void	queueup __P((ENVELOPE *, bool, bool));
2019 extern bool	runqueue __P((bool, bool, bool, bool));
2020 extern bool	run_work_group __P((int, int));
2021 extern void	set_def_queueval __P((QUEUEGRP *, bool));
2022 extern void	setup_queues __P((bool));
2023 extern bool	setnewqueue __P((ENVELOPE *));
2024 extern bool	shouldqueue __P((long, time_t));
2025 extern void	sync_queue_time __P((void));
2026 extern void	init_qid_alg __P((void));
2027 extern int	print_single_queue __P((int, int));
2028 #if REQUIRES_DIR_FSYNC
2029 # define SYNC_DIR(path, panic) sync_dir(path, panic)
2030 extern void	sync_dir __P((char *, bool));
2031 #else /* REQUIRES_DIR_FSYNC */
2032 # define SYNC_DIR(path, panic) ((void) 0)
2033 #endif /* REQUIRES_DIR_FSYNC */
2034 
2035 /*
2036 **  Timeouts
2037 **
2038 **	Indicated values are the MINIMUM per RFC 1123 section 5.3.2.
2039 */
2040 
2041 EXTERN struct
2042 {
2043 			/* RFC 1123-specified timeouts [minimum value] */
2044 	time_t	to_initial;	/* initial greeting timeout [5m] */
2045 	time_t	to_mail;	/* MAIL command [5m] */
2046 	time_t	to_rcpt;	/* RCPT command [5m] */
2047 	time_t	to_datainit;	/* DATA initiation [2m] */
2048 	time_t	to_datablock;	/* DATA block [3m] */
2049 	time_t	to_datafinal;	/* DATA completion [10m] */
2050 	time_t	to_nextcommand;	/* next command [5m] */
2051 			/* following timeouts are not mentioned in RFC 1123 */
2052 	time_t	to_iconnect;	/* initial connection timeout (first try) */
2053 	time_t	to_connect;	/* initial connection timeout (later tries) */
2054 	time_t	to_aconnect;	/* all connections timeout (MX and A records) */
2055 	time_t	to_rset;	/* RSET command */
2056 	time_t	to_helo;	/* HELO command */
2057 	time_t	to_quit;	/* QUIT command */
2058 	time_t	to_miscshort;	/* misc short commands (NOOP, VERB, etc) */
2059 	time_t	to_ident;	/* IDENT protocol requests */
2060 	time_t	to_fileopen;	/* opening :include: and .forward files */
2061 	time_t	to_control;	/* process a control socket command */
2062 	time_t	to_lhlo;	/* LMTP: LHLO command */
2063 #if SASL
2064 	time_t	to_auth;	/* AUTH dialogue [10m] */
2065 #endif /* SASL */
2066 #if STARTTLS
2067 	time_t	to_starttls;	/* STARTTLS dialogue [10m] */
2068 #endif /* STARTTLS */
2069 			/* following are per message */
2070 	time_t	to_q_return[MAXTOCLASS];	/* queue return timeouts */
2071 	time_t	to_q_warning[MAXTOCLASS];	/* queue warning timeouts */
2072 	time_t	res_retrans[MAXRESTOTYPES];	/* resolver retransmit */
2073 	int	res_retry[MAXRESTOTYPES];	/* resolver retry */
2074 } TimeOuts;
2075 
2076 /* timeout classes for return and warning timeouts */
2077 #define TOC_NORMAL	0	/* normal delivery */
2078 #define TOC_URGENT	1	/* urgent delivery */
2079 #define TOC_NONURGENT	2	/* non-urgent delivery */
2080 #define TOC_DSN		3	/* DSN delivery */
2081 
2082 /* resolver timeout specifiers */
2083 #define RES_TO_FIRST	0	/* first attempt */
2084 #define RES_TO_NORMAL	1	/* subsequent attempts */
2085 #define RES_TO_DEFAULT	2	/* default value */
2086 
2087 /* functions */
2088 extern void	inittimeouts __P((char *, bool));
2089 
2090 /*
2091 **  Interface probing
2092 */
2093 
2094 #define DPI_PROBENONE		0	/* Don't probe any interfaces */
2095 #define DPI_PROBEALL		1	/* Probe all interfaces */
2096 #define DPI_SKIPLOOPBACK	2	/* Don't probe loopback interfaces */
2097 
2098 /*
2099 **  Trace information
2100 */
2101 
2102 /* macros for debugging flags */
2103 #define tTd(flag, level)	(tTdvect[flag] >= (unsigned char)level)
2104 #define tTdlevel(flag)		(tTdvect[flag])
2105 
2106 /* variables */
2107 extern unsigned char	tTdvect[100];	/* trace vector */
2108 
2109 /*
2110 **  Miscellaneous information.
2111 */
2112 
2113 /*
2114 **  The "no queue id" queue id for sm_syslog
2115 */
2116 
2117 #define NOQID		""
2118 
2119 #define CURHOSTNAME	(CurHostName == NULL ? "local" : CurHostName)
2120 
2121 /*
2122 **  Some in-line functions
2123 */
2124 
2125 /* set exit status */
2126 #define setstat(s)	{ \
2127 				if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \
2128 					ExitStat = s; \
2129 			}
2130 
2131 
2132 #define STRUCTCOPY(s, d)	d = s
2133 
2134 /* free a pointer if it isn't NULL and set it to NULL */
2135 #define SM_FREE_CLR(p)	\
2136 			if ((p) != NULL) \
2137 			{ \
2138 				sm_free(p); \
2139 				(p) = NULL; \
2140 			} \
2141 			else
2142 
2143 /*
2144 **  Update a permanent string variable with a new value.
2145 **  The old value is freed, the new value is strdup'ed.
2146 **
2147 **  We use sm_pstrdup_x to duplicate the string because it raises
2148 **  an exception on error, and because it allocates "permanent storage"
2149 **  which is not expected to be freed before process exit.
2150 **  The latter is important for memory leak analysis.
2151 **
2152 **  If an exception occurs while strdup'ing the new value,
2153 **  then the variable remains set to the old value.
2154 **  That's why the strdup must occur before we free the old value.
2155 **
2156 **  The macro uses a do loop so that this idiom will work:
2157 **	if (...)
2158 **		PSTRSET(var, val1);
2159 **	else
2160 **		PSTRSET(var, val2);
2161 */
2162 #define PSTRSET(var, val) \
2163 	do \
2164 	{ \
2165 		char *_newval = sm_pstrdup_x(val); \
2166 		if (var != NULL) \
2167 			sm_free(var); \
2168 		var = _newval; \
2169 	} while (0)
2170 
2171 #define _CHECK_RESTART \
2172 	do \
2173 	{ \
2174 		if (ShutdownRequest != NULL) \
2175 			shutdown_daemon(); \
2176 		else if (RestartRequest != NULL) \
2177 			restart_daemon(); \
2178 		else if (RestartWorkGroup) \
2179 			restart_marked_work_groups(); \
2180 	} while (0)
2181 
2182 # define CHECK_RESTART _CHECK_RESTART
2183 
2184 /* reply types (text in SmtpMsgBuffer) */
2185 #define XS_DEFAULT	0
2186 #define XS_STARTTLS	1
2187 #define XS_AUTH		2
2188 
2189 /*
2190 **  Global variables.
2191 */
2192 
2193 #if _FFR_ADDR_TYPE_MODES
2194 EXTERN bool	AddrTypeModes;	/* addr_type: extra "mode" information */
2195 #endif /* _FFR_ADDR_TYPE_MODES */
2196 EXTERN bool	AllowBogusHELO;	/* allow syntax errors on HELO command */
2197 EXTERN bool	CheckAliases;	/* parse addresses during newaliases */
2198 #if _FFR_QUEUE_RUN_PARANOIA
2199 EXTERN int	CheckQueueRunners; /* check whether queue runners are OK */
2200 #endif /* _FFR_QUEUE_RUN_PARANOIA */
2201 EXTERN bool	ColonOkInAddr;	/* single colon legal in address */
2202 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_)
2203 EXTERN bool	ConfigFileRead;	/* configuration file has been read */
2204 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */
2205 EXTERN bool	DisConnected;	/* running with OutChannel redirect to transcript file */
2206 EXTERN bool	DontExpandCnames;	/* do not $[...$] expand CNAMEs */
2207 EXTERN bool	DontInitGroups;	/* avoid initgroups() because of NIS cost */
2208 EXTERN bool	DontLockReadFiles;	/* don't read lock support files */
2209 EXTERN bool	DontPruneRoutes;	/* don't prune source routes */
2210 EXTERN bool	ForkQueueRuns;	/* fork for each job when running the queue */
2211 EXTERN bool	FromFlag;	/* if set, "From" person is explicit */
2212 EXTERN bool	GrabTo;		/* if set, get recipients from msg */
2213 EXTERN bool	EightBitAddrOK;	/* we'll let 8-bit addresses through */
2214 EXTERN bool	HasEightBits;	/* has at least one eight bit input byte */
2215 EXTERN bool	HasWildcardMX;	/* don't use MX records when canonifying */
2216 EXTERN bool	HoldErrs;	/* only output errors to transcript */
2217 EXTERN bool	IgnoreHostStatus;	/* ignore long term host status files */
2218 EXTERN bool	IgnrDot;	/* don't let dot end messages */
2219 EXTERN bool	LogUsrErrs;	/* syslog user errors (e.g., SMTP RCPT cmd) */
2220 EXTERN bool	MatchGecos;	/* look for user names in gecos field */
2221 EXTERN bool	MeToo;		/* send to the sender also */
2222 EXTERN bool	NoAlias;	/* suppress aliasing */
2223 EXTERN bool	NoConnect;	/* don't connect to non-local mailers */
2224 EXTERN bool	OnlyOneError;	/*  .... or only want to give one SMTP reply */
2225 EXTERN bool	QuickAbort;	/*  .... but only if we want a quick abort */
2226 #if REQUIRES_DIR_FSYNC
2227 EXTERN bool	RequiresDirfsync;	/* requires fsync() for directory */
2228 #endif /* REQUIRES_DIR_FSYNC */
2229 EXTERN bool	volatile RestartWorkGroup; /* daemon needs to restart some work groups */
2230 EXTERN bool	RrtImpliesDsn;	/* turn Return-Receipt-To: into DSN */
2231 EXTERN bool	SaveFrom;	/* save leading "From" lines */
2232 EXTERN bool	SendMIMEErrors;	/* send error messages in MIME format */
2233 EXTERN bool	SevenBitInput;	/* force 7-bit data on input */
2234 EXTERN bool	SingleLineFromHeader;	/* force From: header to be one line */
2235 EXTERN bool	SingleThreadDelivery;	/* single thread hosts on delivery */
2236 EXTERN bool	SoftBounce;	/* replace 5xy by 4xy (for testing) */
2237 EXTERN bool	volatile StopRequest;	/* stop sending output */
2238 EXTERN bool	SuprErrs;	/* set if we are suppressing errors */
2239 EXTERN bool	TryNullMXList;	/* if we are the best MX, try host directly */
2240 EXTERN bool	UseMSP;		/* mail submission: group writable queue ok? */
2241 EXTERN bool	WorkAroundBrokenAAAA;	/* some nameservers return SERVFAIL on AAAA queries */
2242 EXTERN bool	UseErrorsTo;	/* use Errors-To: header (back compat) */
2243 EXTERN bool	UseNameServer;	/* using DNS -- interpret h_errno & MX RRs */
2244 EXTERN char	InetMode;		/* default network for daemon mode */
2245 EXTERN char	OpMode;		/* operation mode, see below */
2246 EXTERN char	SpaceSub;	/* substitution for <lwsp> */
2247 #if _FFR_BADRCPT_SHUTDOWN
2248 EXTERN int	BadRcptShutdown; /* Shutdown connection for rejected RCPTs */
2249 EXTERN int	BadRcptShutdownGood; /* above even when there are good RCPTs */
2250 #endif /* _FFR_BADRCPT_SHUTDOWN */
2251 EXTERN int	BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */
2252 #if _FFR_RCPTTHROTDELAY
2253 EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */
2254 #else
2255 # define BadRcptThrottleDelay	1
2256 #endif /* _FFR_RCPTTHROTDELAY */
2257 EXTERN int	CheckpointInterval;	/* queue file checkpoint interval */
2258 EXTERN int	ConfigLevel;	/* config file level */
2259 EXTERN int	ConnRateThrottle;	/* throttle for SMTP connection rate */
2260 EXTERN int	volatile CurChildren;	/* current number of daemonic children */
2261 EXTERN int	CurrentLA;	/* current load average */
2262 EXTERN int	DefaultNotify;	/* default DSN notification flags */
2263 EXTERN int	DelayLA;	/* load average to delay connections */
2264 EXTERN int	DontProbeInterfaces;	/* don't probe interfaces for names */
2265 EXTERN int	Errors;		/* set if errors (local to single pass) */
2266 EXTERN int	ExitStat;	/* exit status code */
2267 EXTERN int	FastSplit;	/* fast initial splitting of envelopes */
2268 EXTERN int	FileMode;	/* mode on files */
2269 EXTERN int	LineNumber;	/* line number in current input */
2270 EXTERN int	LogLevel;	/* level of logging to perform */
2271 EXTERN int	MaxAliasRecursion;	/* maximum depth of alias recursion */
2272 EXTERN int	MaxChildren;	/* maximum number of daemonic children */
2273 EXTERN int	MaxForwardEntries;	/* maximum number of forward entries */
2274 EXTERN int	MaxHeadersLength;	/* max length of headers */
2275 EXTERN int	MaxHopCount;	/* max # of hops until bounce */
2276 EXTERN int	MaxMacroRecursion;	/* maximum depth of macro recursion */
2277 EXTERN int	MaxMimeFieldLength;	/* maximum MIME field length */
2278 EXTERN int	MaxMimeHeaderLength;	/* maximum MIME header length */
2279 EXTERN int	MaxNOOPCommands; /* max "noise" commands before slowdown */
2280 
2281 EXTERN int	MaxRcptPerMsg;	/* max recipients per SMTP message */
2282 EXTERN int	MaxRuleRecursion;	/* maximum depth of ruleset recursion */
2283 #if _FFR_MSG_ACCEPT
2284 EXTERN char	*MessageAccept; /* "Message accepted for delivery" reply text */
2285 #endif /* _FFR_MSG_ACCEPT */
2286 
2287 EXTERN int	MimeMode;	/* MIME processing mode */
2288 EXTERN int	NoRecipientAction;
2289 
2290 #if SM_CONF_SHM
2291 EXTERN int	Numfilesys;	/* number of queue file systems */
2292 EXTERN int	*PNumFileSys;
2293 # define NumFileSys	(*PNumFileSys)
2294 # else /* SM_CONF_SHM */
2295 EXTERN int	NumFileSys;	/* number of queue file systems */
2296 # endif /* SM_CONF_SHM */
2297 
2298 EXTERN int	QueueLA;	/* load average starting forced queueing */
2299 EXTERN int	RefuseLA;	/* load average refusing connections */
2300 EXTERN time_t	RejectLogInterval;	/* time btwn log msgs while refusing */
2301 #if _FFR_MEMSTAT
2302 EXTERN long	QueueLowMem;	/* low memory starting forced queueing */
2303 EXTERN long	RefuseLowMem;	/* low memory refusing connections */
2304 EXTERN char	*MemoryResource;/* memory resource to look up */
2305 #endif /* _FFR_MEMSTAT */
2306 EXTERN int	SuperSafe;	/* be extra careful, even if expensive */
2307 EXTERN int	VendorCode;	/* vendor-specific operation enhancements */
2308 EXTERN int	Verbose;	/* set if blow-by-blow desired */
2309 EXTERN gid_t	DefGid;		/* default gid to run as */
2310 EXTERN gid_t	RealGid;	/* real gid of caller */
2311 EXTERN gid_t	RunAsGid;	/* GID to become for bulk of run */
2312 EXTERN gid_t	EffGid;		/* effective gid */
2313 #if SM_CONF_SHM
2314 EXTERN key_t	ShmKey;		/* shared memory key */
2315 EXTERN char	*ShmKeyFile;	/* shared memory key file */
2316 #endif /* SM_CONF_SHM */
2317 EXTERN pid_t	CurrentPid;	/* current process id */
2318 EXTERN pid_t	DaemonPid;	/* process id of daemon */
2319 EXTERN pid_t	PidFilePid;	/* daemon/queue runner who wrote pid file */
2320 EXTERN uid_t	DefUid;		/* default uid to run as */
2321 EXTERN uid_t	RealUid;	/* real uid of caller */
2322 EXTERN uid_t	RunAsUid;	/* UID to become for bulk of run */
2323 EXTERN uid_t	TrustedUid;	/* uid of trusted user for files and startup */
2324 EXTERN size_t	DataFileBufferSize;	/* size of buf for in-core data file */
2325 EXTERN time_t	DeliverByMin;	/* deliver by minimum time */
2326 EXTERN time_t	DialDelay;	/* delay between dial-on-demand tries */
2327 EXTERN time_t	SafeAlias;	/* interval to wait until @:@ in alias file */
2328 EXTERN time_t	ServiceCacheMaxAge;	/* refresh interval for cache */
2329 EXTERN size_t	XscriptFileBufferSize;	/* size of buf for in-core transcript file */
2330 EXTERN MODE_T	OldUmask;	/* umask when sendmail starts up */
2331 EXTERN long	MaxMessageSize;	/* advertised max size we will accept */
2332 EXTERN long	MinBlocksFree;	/* min # of blocks free on queue fs */
2333 EXTERN long	QueueFactor;	/* slope of queue function */
2334 EXTERN long	WkClassFact;	/* multiplier for message class -> priority */
2335 EXTERN long	WkRecipFact;	/* multiplier for # of recipients -> priority */
2336 EXTERN long	WkTimeFact;	/* priority offset each time this job is run */
2337 EXTERN char	*ControlSocketName; /* control socket filename [control.c] */
2338 EXTERN char	*CurHostName;	/* current host we are dealing with */
2339 EXTERN char	*DeadLetterDrop;	/* path to dead letter office */
2340 EXTERN char	*DefUser;	/* default user to run as (from DefUid) */
2341 EXTERN char	*DefaultCharSet;	/* default character set for MIME */
2342 EXTERN char	*DoubleBounceAddr;	/* where to send double bounces */
2343 EXTERN char	*ErrMsgFile;	/* file to prepend to all error messages */
2344 EXTERN char	*FallbackMX;	/* fall back MX host */
2345 EXTERN char	*FallbackSmartHost;	/* fall back smart host */
2346 EXTERN char	*FileName;	/* name to print on error messages */
2347 EXTERN char	*ForwardPath;	/* path to search for .forward files */
2348 EXTERN char	*HeloName;	/* hostname to announce in HELO */
2349 EXTERN char	*HelpFile;	/* location of SMTP help file */
2350 EXTERN char	*HostStatDir;	/* location of host status information */
2351 EXTERN char	*HostsFile;	/* path to /etc/hosts file */
2352 extern char	*Mbdb;		/* mailbox database type */
2353 EXTERN char	*MustQuoteChars;	/* quote these characters in phrases */
2354 EXTERN char	*MyHostName;	/* name of this host for SMTP messages */
2355 EXTERN char	*OperatorChars;	/* operators (old $o macro) */
2356 EXTERN char	*PidFile;	/* location of proc id file [conf.c] */
2357 EXTERN char	*PostMasterCopy;	/* address to get errs cc's */
2358 EXTERN char	*ProcTitlePrefix; /* process title prefix */
2359 EXTERN char	*RealHostName;	/* name of host we are talking to */
2360 EXTERN char	*RealUserName;	/* real user name of caller */
2361 EXTERN char	*volatile RestartRequest;/* a sendmail restart has been requested */
2362 EXTERN char	*RunAsUserName;	/* user to become for bulk of run */
2363 EXTERN char	*SafeFileEnv;	/* chroot location for file delivery */
2364 EXTERN char	*ServiceSwitchFile;	/* backup service switch */
2365 EXTERN char	*volatile ShutdownRequest;/* a sendmail shutdown has been requested */
2366 EXTERN char	*SmtpGreeting;	/* SMTP greeting message (old $e macro) */
2367 EXTERN char	*SmtpPhase;	/* current phase in SMTP processing */
2368 EXTERN char	SmtpError[MAXLINE];	/* save failure error messages */
2369 EXTERN char	*StatFile;	/* location of statistics summary */
2370 EXTERN char	*TimeZoneSpec;	/* override time zone specification */
2371 EXTERN char	*UdbSpec;	/* user database source spec */
2372 EXTERN char	*UnixFromLine;	/* UNIX From_ line (old $l macro) */
2373 EXTERN char	**ExternalEnviron;	/* saved user (input) environment */
2374 EXTERN char	**SaveArgv;	/* argument vector for re-execing */
2375 EXTERN BITMAP256	DontBlameSendmail;	/* DontBlameSendmail bits */
2376 EXTERN SM_FILE_T	*InChannel;	/* input connection */
2377 EXTERN SM_FILE_T	*OutChannel;	/* output connection */
2378 EXTERN SM_FILE_T	*TrafficLogFile; /* file in which to log all traffic */
2379 #if HESIOD
2380 EXTERN void	*HesiodContext;
2381 #endif /* HESIOD */
2382 EXTERN ENVELOPE	*CurEnv;	/* envelope currently being processed */
2383 EXTERN char	*RuleSetNames[MAXRWSETS];	/* ruleset number to name */
2384 EXTERN char	*UserEnviron[MAXUSERENVIRON + 1];
2385 EXTERN struct rewrite	*RewriteRules[MAXRWSETS];
2386 EXTERN struct termescape	TermEscape;	/* terminal escape codes */
2387 EXTERN SOCKADDR	ConnectOnlyTo;	/* override connection address (for testing) */
2388 EXTERN SOCKADDR RealHostAddr;	/* address of host we are talking to */
2389 extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */
2390 
2391 
2392 EXTERN int ConnectionRateWindowSize;
2393 
2394 /*
2395 **  Declarations of useful functions
2396 */
2397 
2398 /* Transcript file */
2399 extern void	closexscript __P((ENVELOPE *));
2400 extern void	openxscript __P((ENVELOPE *));
2401 
2402 /* error related */
2403 extern void	buffer_errors __P((void));
2404 extern void	flush_errors __P((bool));
2405 extern void PRINTFLIKE(1, 2)	message __P((const char *, ...));
2406 extern void PRINTFLIKE(1, 2)	nmessage __P((const char *, ...));
2407 extern void PRINTFLIKE(1, 2)	syserr __P((const char *, ...));
2408 extern void PRINTFLIKE(2, 3)	usrerrenh __P((char *, const char *, ...));
2409 extern void PRINTFLIKE(1, 2)	usrerr __P((const char *, ...));
2410 extern int	isenhsc __P((const char *, int));
2411 extern int	extenhsc __P((const char *, int, char *));
2412 
2413 /* alias file */
2414 extern void	alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *));
2415 extern bool	aliaswait __P((MAP *, char *, bool));
2416 extern void	forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *));
2417 extern void	readaliases __P((MAP *, SM_FILE_T *, bool, bool));
2418 extern bool	rebuildaliases __P((MAP *, bool));
2419 extern void	setalias __P((char *));
2420 
2421 /* logging */
2422 extern void	logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *));
2423 extern void	logsender __P((ENVELOPE *, char *));
2424 extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...));
2425 
2426 /* SMTP */
2427 extern void	giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *));
2428 extern int	reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int));
2429 extern void	smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile));
2430 #if SASL
2431 extern int	smtpauth __P((MAILER *, MCI *, ENVELOPE *));
2432 #endif /* SASL */
2433 extern int	smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t));
2434 extern int	smtpgetstat __P((MAILER *, MCI *, ENVELOPE *));
2435 extern int	smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *));
2436 extern void	smtpmessage __P((char *, MAILER *, MCI *, ...));
2437 extern void	smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool));
2438 extern char	*smtptodsn __P((int));
2439 extern int	smtpprobe __P((MCI *));
2440 extern void	smtpquit __P((MAILER *, MCI *, ENVELOPE *));
2441 extern int	smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t));
2442 extern void	smtprset __P((MAILER *, MCI *, ENVELOPE *));
2443 
2444 #define REPLYTYPE(r)	((r) / 100)		/* first digit of reply code */
2445 #define ISSMTPCODE(c)	(isascii(c[0]) && isdigit(c[0]) && \
2446 		    isascii(c[1]) && isdigit(c[1]) && \
2447 		    isascii(c[2]) && isdigit(c[2]))
2448 #define ISSMTPREPLY(c)	(ISSMTPCODE(c) && \
2449 		    (c[3] == ' ' || c[3] == '-' || c[3] == '\0'))
2450 
2451 /* delivery */
2452 extern pid_t	dowork __P((int, int, char *, bool, bool, ENVELOPE *));
2453 extern pid_t	doworklist __P((ENVELOPE *, bool, bool));
2454 extern int	endmailer __P((MCI *, ENVELOPE *, char **));
2455 extern int	mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *));
2456 extern void	sendall __P((ENVELOPE *, int));
2457 
2458 /* stats */
2459 #define STATS_NORMAL		'n'
2460 #define STATS_QUARANTINE	'q'
2461 #define STATS_REJECT		'r'
2462 #define STATS_CONNECT		'c'
2463 
2464 extern void	markstats __P((ENVELOPE *, ADDRESS *, int));
2465 extern void	clearstats __P((void));
2466 extern void	poststats __P((char *));
2467 
2468 /* control socket */
2469 extern void	closecontrolsocket  __P((bool));
2470 extern void	clrcontrol  __P((void));
2471 extern void	control_command __P((int, ENVELOPE *));
2472 extern int	opencontrolsocket __P((void));
2473 
2474 #if MILTER
2475 /* milter functions */
2476 extern void	milter_config __P((char *, struct milter **, int));
2477 extern void	milter_setup __P((char *));
2478 extern void	milter_set_option __P((char *, char *, bool));
2479 extern bool	milter_init __P((ENVELOPE *, char *, milters_T *));
2480 extern void	milter_quit __P((ENVELOPE *));
2481 extern void	milter_abort __P((ENVELOPE *));
2482 extern char	*milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *));
2483 extern char	*milter_helo __P((char *, ENVELOPE *, char *));
2484 extern char	*milter_envfrom __P((char **, ENVELOPE *, char *));
2485 extern char	*milter_data_cmd __P((ENVELOPE *, char *));
2486 extern char	*milter_envrcpt __P((char **, ENVELOPE *, char *, bool));
2487 extern char	*milter_data __P((ENVELOPE *, char *));
2488 extern char	*milter_unknown __P((char *, ENVELOPE *, char *));
2489 #endif /* MILTER */
2490 
2491 extern char	*addquotes __P((char *, SM_RPOOL_T *));
2492 extern char	*arpadate __P((char *));
2493 extern bool	atobool __P((char *));
2494 extern int	atooct __P((char *));
2495 extern void	auth_warning __P((ENVELOPE *, const char *, ...));
2496 extern int	blocksignal __P((int));
2497 extern bool	bitintersect __P((BITMAP256, BITMAP256));
2498 extern bool	bitzerop __P((BITMAP256));
2499 extern int	check_bodytype __P((char *));
2500 extern void	buildfname __P((char *, char *, char *, int));
2501 extern bool	chkclientmodifiers __P((int));
2502 extern bool	chkdaemonmodifiers __P((int));
2503 extern int	checkcompat __P((ADDRESS *, ENVELOPE *));
2504 #ifdef XDEBUG
2505 extern void	checkfd012 __P((char *));
2506 extern void	checkfdopen __P((int, char *));
2507 #endif /* XDEBUG */
2508 extern void	checkfds __P((char *));
2509 extern bool	chownsafe __P((int, bool));
2510 extern void	cleanstrcpy __P((char *, char *, int));
2511 #if SM_CONF_SHM
2512 extern void	cleanup_shm __P((bool));
2513 #endif /* SM_CONF_SHM */
2514 extern void	close_sendmail_pid __P((void));
2515 extern void	clrdaemon __P((void));
2516 extern void	collect __P((SM_FILE_T *, bool, HDR **, ENVELOPE *, bool));
2517 extern bool	connection_rate_check __P((SOCKADDR *, ENVELOPE *));
2518 extern time_t	convtime __P((char *, int));
2519 extern char	**copyplist __P((char **, bool, SM_RPOOL_T *));
2520 extern void	copy_class __P((int, int));
2521 extern int	count_open_connections __P((SOCKADDR *));
2522 extern time_t	curtime __P((void));
2523 extern char	*defcharset __P((ENVELOPE *));
2524 extern char	*denlstring __P((char *, bool, bool));
2525 extern void	dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *));
2526 extern void	disconnect __P((int, ENVELOPE *));
2527 extern void	disk_status __P((SM_FILE_T *, char *));
2528 extern bool	dns_getcanonname __P((char *, int, bool, int *, int *));
2529 extern pid_t	dofork __P((void));
2530 extern int	drop_privileges __P((bool));
2531 extern int	dsntoexitstat __P((char *));
2532 extern void	dumpfd __P((int, bool, bool));
2533 #if SM_HEAP_CHECK
2534 extern void	dumpstab __P((void));
2535 #endif /* SM_HEAP_CHECK */
2536 extern void	dumpstate __P((char *));
2537 extern bool	enoughdiskspace __P((long, ENVELOPE *));
2538 extern char	*exitstat __P((char *));
2539 extern void	fatal_error __P((SM_EXC_T *));
2540 extern char	*fgetfolded __P((char *, int *, SM_FILE_T *));
2541 extern void	fill_fd __P((int, char *));
2542 extern char	*find_character __P((char *, int));
2543 extern int	finduser __P((char *, bool *, SM_MBDB_T *));
2544 extern void	finis __P((bool, bool, volatile int));
2545 extern void	fixcrlf __P((char *, bool));
2546 extern long	freediskspace __P((const char *, long *));
2547 #if NETINET6 && NEEDSGETIPNODE
2548 extern void	freehostent __P((struct hostent *));
2549 #endif /* NETINET6 && NEEDSGETIPNODE */
2550 extern char	*get_column __P((char *, int, int, char *, int));
2551 extern char	*getauthinfo __P((int, bool *));
2552 extern int	getdtsize __P((void));
2553 extern int	getla __P((void));
2554 extern char	*getmodifiers __P((char *, BITMAP256));
2555 extern BITMAP256	*getrequests __P((ENVELOPE *));
2556 extern char	*getvendor __P((int));
2557 extern void	help __P((char *, ENVELOPE *));
2558 extern void	init_md __P((int, char **));
2559 extern void	initdaemon __P((void));
2560 extern void	inithostmaps __P((void));
2561 extern void	initmacros __P((ENVELOPE *));
2562 extern void	initsetproctitle __P((int, char **, char **));
2563 extern void	init_vendor_macros __P((ENVELOPE *));
2564 extern SIGFUNC_DECL	intsig __P((int));
2565 extern bool	isloopback __P((SOCKADDR sa));
2566 extern void	load_if_names __P((void));
2567 extern bool	lockfile __P((int, char *, char *, int));
2568 extern void	log_sendmail_pid __P((ENVELOPE *));
2569 extern void	logundelrcpts __P((ENVELOPE *, char *, int, bool));
2570 extern char	lower __P((int));
2571 extern void	makelower __P((char *));
2572 extern int	makeconnection_ds __P((char *, MCI *));
2573 extern int	makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t));
2574 extern void	makeworkgroups __P((void));
2575 extern void	markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool));
2576 extern void	mark_work_group_restart __P((int, int));
2577 extern MCI	*mci_new __P((SM_RPOOL_T *));
2578 extern char	*munchstring __P((char *, char **, int));
2579 extern struct hostent	*myhostname __P((char *, int));
2580 extern char	*newstr __P((const char *));
2581 #if NISPLUS
2582 extern char	*nisplus_default_domain __P((void));	/* extern for Sun */
2583 #endif /* NISPLUS */
2584 extern bool	path_is_dir __P((char *, bool));
2585 extern int	pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e));
2586 extern char	*pintvl __P((time_t, bool));
2587 extern void	printav __P((SM_FILE_T *, char **));
2588 extern void	printmailer __P((SM_FILE_T *, MAILER *));
2589 extern void	printnqe __P((SM_FILE_T *, char *));
2590 extern void	printopenfds __P((bool));
2591 extern void	printqueue __P((void));
2592 extern void	printrules __P((void));
2593 extern pid_t	prog_open __P((char **, int *, ENVELOPE *));
2594 extern bool	putline __P((char *, MCI *));
2595 extern bool	putxline __P((char *, size_t, MCI *, int));
2596 extern void	queueup_macros __P((int, SM_FILE_T *, ENVELOPE *));
2597 extern void	readcf __P((char *, bool, ENVELOPE *));
2598 extern SIGFUNC_DECL	reapchild __P((int));
2599 extern int	releasesignal __P((int));
2600 extern void	resetlimits __P((void));
2601 extern void	restart_daemon __P((void));
2602 extern void	restart_marked_work_groups __P((void));
2603 extern bool	rfc822_string __P((char *));
2604 extern void	rmexpstab __P((void));
2605 extern bool	savemail __P((ENVELOPE *, bool));
2606 extern void	seed_random __P((void));
2607 extern void	sendtoargv __P((char **, ENVELOPE *));
2608 extern void	setclientoptions __P((char *));
2609 extern bool	setdaemonoptions __P((char *));
2610 extern void	setdefaults __P((ENVELOPE *));
2611 extern void	setdefuser __P((void));
2612 extern bool	setvendor __P((char *));
2613 extern void	set_op_mode __P((int));
2614 extern void	setoption __P((int, char *, bool, bool, ENVELOPE *));
2615 extern sigfunc_t	setsignal __P((int, sigfunc_t));
2616 extern void	sm_setuserenv __P((const char *, const char *));
2617 extern void	settime __P((ENVELOPE *));
2618 #if STARTTLS
2619 extern void	set_tls_rd_tmo __P((int));
2620 #else /* STARTTLS */
2621 #define set_tls_rd_tmo(rd_tmo)
2622 #endif /* STARTTLS */
2623 extern char	*sfgets __P((char *, int, SM_FILE_T *, time_t, char *));
2624 extern char	*shortenstring __P((const char *, size_t));
2625 extern char	*shorten_hostname __P((char []));
2626 extern bool	shorten_rfc822_string __P((char *, size_t));
2627 extern void	shutdown_daemon __P((void));
2628 extern void	sm_closefrom __P((int lowest, int highest));
2629 extern void	sm_close_on_exec __P((int lowest, int highest));
2630 extern struct hostent	*sm_gethostbyname __P((char *, int));
2631 extern struct hostent	*sm_gethostbyaddr __P((char *, int, int));
2632 extern void	sm_getla __P((void));
2633 extern struct passwd	*sm_getpwnam __P((char *));
2634 extern struct passwd	*sm_getpwuid __P((UID_T));
2635 extern void	sm_setproctitle __P((bool, ENVELOPE *, const char *, ...));
2636 extern pid_t	sm_wait __P((int *));
2637 extern bool	split_by_recipient __P((ENVELOPE *e));
2638 extern void	stop_sendmail __P((void));
2639 extern void	stripbackslash __P((char *));
2640 extern bool	strreplnonprt __P((char *, int));
2641 extern bool	strcontainedin __P((bool, char *, char *));
2642 extern int	switch_map_find __P((char *, char *[], short []));
2643 #if STARTTLS
2644 extern void	tls_set_verify __P((SSL_CTX *, SSL *, bool));
2645 #endif /* STARTTLS */
2646 extern bool	transienterror __P((int));
2647 extern void	truncate_at_delim __P((char *, size_t, int));
2648 extern void	tTflag __P((char *));
2649 extern void	tTsetup __P((unsigned char *, unsigned int, char *));
2650 extern SIGFUNC_DECL	tick __P((int));
2651 extern char	*ttypath __P((void));
2652 extern void	unlockqueue __P((ENVELOPE *));
2653 #if !HASUNSETENV
2654 extern void	unsetenv __P((char *));
2655 #endif /* !HASUNSETENV */
2656 
2657 /* update file system information: +/- some blocks */
2658 #if SM_CONF_SHM
2659 extern void	upd_qs __P((ENVELOPE *, int, int, char *));
2660 # define updfs(e, count, space, where) upd_qs(e, count, space, where)
2661 #else /* SM_CONF_SHM */
2662 # define updfs(e, count, space, where)
2663 # define upd_qs(e, count, space, where)
2664 #endif /* SM_CONF_SHM */
2665 
2666 extern char	*username __P((void));
2667 extern bool	usershellok __P((char *, char *));
2668 extern void	vendor_post_defaults __P((ENVELOPE *));
2669 extern void	vendor_pre_defaults __P((ENVELOPE *));
2670 extern int	waitfor __P((pid_t));
2671 extern bool	writable __P((char *, ADDRESS *, long));
2672 #if SM_HEAP_CHECK
2673 # define xalloc(size)	xalloc_tagged(size, __FILE__, __LINE__)
2674 extern char *xalloc_tagged __P((int, char*, int));
2675 #else /* SM_HEAP_CHECK */
2676 extern char *xalloc __P((int));
2677 #endif /* SM_HEAP_CHECK */
2678 extern void	xputs __P((SM_FILE_T *, const char *));
2679 extern char	*xtextify __P((char *, char *));
2680 extern bool	xtextok __P((char *));
2681 extern int	xunlink __P((char *));
2682 extern char	*xuntextify __P((char *));
2683 
2684 
2685 #undef EXTERN
2686 #endif /* ! _SENDMAIL_H */
2687