1 /* $Cambridge: exim/src/src/macros.h,v 1.39 2009/11/16 19:50:37 nm4 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2009 */
8 /* See the file NOTICE for conditions of use and distribution. */
11 /* These two macros make it possible to obtain the result of macro-expanding
12 a string as a text string. This is sometimes useful for debugging output. */
14 #define mac_string(s) # s
15 #define mac_expanded_string(s) mac_string(s)
18 /* When running in the test harness, the load average is fudged. */
20 #define OS_GETLOADAVG() \
21 (running_in_test_harness? (test_harness_load_avg += 10) : os_getloadavg())
24 /* The address_item structure has a word full of 1-bit flags. These macros
27 #define setflag(addr,flag) addr->flags |= (flag)
28 #define clearflag(addr,flag) addr->flags &= ~(flag)
30 #define testflag(addr,flag) ((addr->flags & (flag)) != 0)
31 #define testflagsall(addr,flag) ((addr->flags & (flag)) == (flag))
33 #define copyflag(addrnew,addrold,flag) \
34 addrnew->flags = (addrnew->flags & ~(flag)) | (addrold->flags & (flag))
36 #define orflag(addrnew,addrold,flag) \
37 addrnew->flags |= addrold->flags & (flag)
40 /* For almost all calls to convert things to printing characters, we want to
41 allow tabs. A macro just makes life a bit easier. */
43 #define string_printing(s) string_printing2((s), TRUE)
46 /* We need a special return code for "no recipients and failed to send an error
47 message". ANSI C defines only EXIT_FAILURE and EXIT_SUCCESS. On the assumption
48 that these are always 1 and 0 on Unix systems ... */
50 #define EXIT_NORECIPIENTS 2
53 /* Character-handling macros. It seems that the set of standard functions in
54 ctype.h aren't actually all that useful. One reason for this is that email is
55 international, so the concept of using a locale to vary what they do is not
56 helpful. Another problem is that in different operating systems, the libraries
57 yield different results, even in the default locale. For example, Linux yields
58 TRUE for iscntrl() for all characters > 127, whereas many other systems yield
59 FALSE. For these reasons we define our own set of macros for a number of
60 character testing functions. Ensure that all these tests treat their arguments
63 #define mac_iscntrl(c) \
64 ((uschar)(c) < 32 || (uschar)(c) == 127)
66 #define mac_iscntrl_or_special(c) \
67 ((uschar)(c) < 32 || strchr(" ()<>@,;:\\\".[]\177", (uschar)(c)) != NULL)
69 #define mac_isgraph(c) \
70 ((uschar)(c) > 32 && (uschar)(c) != 127)
72 #define mac_isprint(c) \
73 (((uschar)(c) >= 32 && (uschar)(c) <= 126) || c == '\t' || \
74 ((uschar)(c) > 127 && print_topbitchars))
77 /* When built with TLS support, the act of flushing SMTP output becomes
78 a no-op once an SSL session is in progress. */
81 #define mac_smtp_fflush() if (tls_active < 0) fflush(smtp_out);
83 #define mac_smtp_fflush() fflush(smtp_out);
87 /* Define which ends of pipes are for reading and writing, as some systems
88 don't make the file descriptors two-way. */
93 /* The RFC 1413 ident port */
95 #define IDENT_PORT 113
97 /* A macro to simplify testing bits in lookup types */
99 #define mac_islookup(a,b) ((lookup_list[a].type & (b)) != 0)
101 /* Debugging control */
103 #define DEBUG(x) if ((debug_selector & (x)) != 0)
104 #define HDEBUG(x) if (host_checking || (debug_selector & (x)) != 0)
106 /* The default From: text for DSNs */
108 #define DEFAULT_DSN_FROM "Mail Delivery System <Mailer-Daemon@$qualify_domain>"
110 /* The size of the vector for saving/restoring address expansion pointers while
111 verifying. This has to be explicit because it is referenced in more than one
114 #define ADDRESS_EXPANSIONS_COUNT 18
116 /* The maximum permitted number of command-line (-D) macro definitions. We
117 need a limit only to make it easier to generate argument vectors for re-exec
120 #define MAX_CLMACROS 10
122 /* The number of integer variables available in filter files. If this is
123 changed, then the tables in expand.c for accessing them must be changed too. */
125 #define FILTER_VARIABLE_COUNT 10
127 /* The size of the vector holding delay warning times */
129 #define DELAY_WARNING_SIZE 12
131 /* The size of the buffer holding the processing information string. */
133 #define PROCESS_INFO_SIZE 256
135 /* The size of buffer to get for constructing log entries. Make it big
136 enough to hold all the headers from a normal kind of message. */
138 #define LOG_BUFFER_SIZE 8192
140 /* The size of the circular buffer that remembers recent SMTP commands */
142 #define SMTP_HBUFF_SIZE 20
144 /* The initial size of a big buffer for use in various places. It gets put
145 into big_buffer_size and in some circumstances increased. It should be at least
146 as long as the maximum path length. */
148 #if defined PATH_MAX && PATH_MAX > 16384
149 #define BIG_BUFFER_SIZE PATH_MAX
150 #elif defined MAXPATHLEN && MAXPATHLEN > 16384
151 #define BIG_BUFFER_SIZE MAXPATHLEN
153 #define BIG_BUFFER_SIZE 16384
156 /* This limits the length of data returned by local_scan(). Because it is
157 written on the spool, it gets read into big_buffer. */
159 #define LOCAL_SCAN_MAX_RETURN (BIG_BUFFER_SIZE - 24)
161 /* A limit to the length of an address. RFC 2821 limits the local part to 64
162 and the domain to 255, so this should be adequate, taking into account quotings
165 #define ADDRESS_MAXLENGTH 512
167 /* The length of the base names of spool files, which consist of an internal
168 message id with a trailing "-H" or "-D" added. */
170 #define SPOOL_NAME_LENGTH (MESSAGE_ID_LENGTH+2)
172 /* The maximum number of message ids to store in a waiting database
175 #define WAIT_NAME_MAX 50
177 /* Fixed option values for all PCRE functions */
179 #define PCRE_COPT 0 /* compile */
180 #define PCRE_EOPT 0 /* exec */
182 /* Macros for trivial functions */
184 #define mac_ismsgid(s) \
185 (pcre_exec(regex_ismsgid,NULL,CS s,Ustrlen(s),0,PCRE_EOPT,NULL,0) >= 0)
188 /* Options for dns_next_rr */
190 enum { RESET_NEXT, RESET_ANSWERS, RESET_AUTHORITY, RESET_ADDITIONAL };
192 /* Argument values for the time-of-day function */
194 enum { tod_log, tod_log_bare, tod_log_zone, tod_log_datestamp,
195 tod_zone, tod_full, tod_bsdin, tod_mbx, tod_epoch, tod_zulu };
197 /* For identifying types of driver */
205 /* Error numbers for generating error messages when reading a message on the
209 ERRMESS_BADARGADDRESS, /* Bad address via argument list */
210 ERRMESS_BADADDRESS, /* Bad address read via -t */
211 ERRMESS_NOADDRESS, /* Message has no addresses */
212 ERRMESS_IGADDRESS, /* All -t addresses ignored */
213 ERRMESS_BADNOADDRESS, /* Bad address via -t, leaving none */
214 ERRMESS_IOERR, /* I/O error while reading a message */
215 ERRMESS_VLONGHEADER, /* Excessively long message header */
216 ERRMESS_VLONGHDRLINE, /* Excessively long single line in header */
217 ERRMESS_TOOBIG, /* Message too big */
218 ERRMESS_TOOMANYRECIP, /* Too many recipients */
219 ERRMESS_LOCAL_SCAN, /* Rejected by local scan */
220 ERRMESS_LOCAL_ACL /* Rejected by non-SMTP ACL */
223 /* Error handling styles - set by option, and apply only when receiving
224 a local message not via SMTP. */
227 ERRORS_SENDER, /* Return to sender (default) */
228 ERRORS_STDERR /* Write on stderr */
231 /* Exec control values when Exim execs itself via child_exec_exim. */
234 CEE_RETURN_ARGV, /* Don't exec, just build and return argv */
235 CEE_EXEC_EXIT, /* Just exit if exec fails */
236 CEE_EXEC_PANIC /* Panic-die if exec fails */
239 /* Bit values for filter_test */
241 #define FTEST_NONE 0 /* Not filter testing */
242 #define FTEST_USER 1 /* Testing user filter */
243 #define FTEST_SYSTEM 2 /* Testing system filter */
245 /* Returns from the routing, transport and authentication functions (not all
246 apply to all of them). Some other functions also use these convenient values,
247 and some additional values are used only by non-driver functions.
249 OK, FAIL, DEFER, ERROR, and FAIL_FORCED are also declared in local_scan.h for
250 use in the local_scan() function and in ${dlfunc loaded functions. Do not
251 change them unilaterally. */
253 #define OK 0 /* Successful match */
254 #define DEFER 1 /* Defer - some problem */
255 #define FAIL 2 /* Matching failed */
256 #define ERROR 3 /* Internal or config error */
257 #define FAIL_FORCED 4 /* "Forced" failure */
259 #define DECLINE 5 /* Declined to handle the address, pass to next
260 router unless no_more is set */
261 #define PASS 6 /* Pass to next driver, or to pass_router,
262 even if no_more is set */
263 #define DISCARD 7 /* Address routed to :blackhole: or "seen finish" */
264 #define SKIP 8 /* Skip this router (used in route_address only) */
265 #define REROUTED 9 /* Address was changed and child created*/
266 #define PANIC 10 /* Hard failed with internal error */
267 #define BAD64 11 /* Bad base64 data (auth) */
268 #define UNEXPECTED 12 /* Unexpected initial auth data */
269 #define CANCELLED 13 /* Authentication cancelled */
270 #define FAIL_SEND 14 /* send() failed in authenticator */
271 #define FAIL_DROP 15 /* Fail and drop connection (used in ACL) */
273 /* Returns from the deliver_message() function */
275 #define DELIVER_ATTEMPTED_NORMAL 0 /* Tried a normal delivery */
276 #define DELIVER_MUA_SUCCEEDED 1 /* Success when mua_wrapper is set */
277 #define DELIVER_MUA_FAILED 2 /* Failure when mua_wrapper is set */
278 #define DELIVER_NOT_ATTEMPTED 3 /* Not tried (no msg or is locked */
280 /* Returns from DNS lookup functions. */
282 enum { DNS_SUCCEED, DNS_NOMATCH, DNS_NODATA, DNS_AGAIN, DNS_FAIL };
284 /* Ending states when reading a message. The order is important. The test
285 for having to swallow the rest of an SMTP message is whether the value is
288 #define END_NOTSTARTED 0 /* Message not started */
289 #define END_DOT 1 /* Message ended with '.' */
290 #define END_EOF 2 /* Message ended with EOF (error for SMTP) */
291 #define END_NOTENDED 3 /* Message reading not yet ended */
292 #define END_SIZE 4 /* Reading ended because message too big */
293 #define END_WERROR 5 /* Write error while reading the message */
295 /* Options bits for debugging; D_v and D_local_scan are also in local_scan.h */
297 #define D_v 0x00000001
298 #define D_local_scan 0x00000002
300 #define D_acl 0x00000004
301 #define D_auth 0x00000008
302 #define D_deliver 0x00000010
303 #define D_dns 0x00000020
304 #define D_dnsbl 0x00000040
305 #define D_exec 0x00000080
306 #define D_expand 0x00000100
307 #define D_filter 0x00000200
308 #define D_hints_lookup 0x00000400
309 #define D_host_lookup 0x00000800
310 #define D_ident 0x00001000
311 #define D_interface 0x00002000
312 #define D_lists 0x00004000
313 #define D_load 0x00008000
314 #define D_lookup 0x00010000
315 #define D_memory 0x00020000
316 #define D_pid 0x00040000
317 #define D_process_info 0x00080000
318 #define D_queue_run 0x00100000
319 #define D_receive 0x00200000
320 #define D_resolver 0x00400000
321 #define D_retry 0x00800000
322 #define D_rewrite 0x01000000
323 #define D_route 0x02000000
324 #define D_timestamp 0x04000000
325 #define D_tls 0x08000000
326 #define D_transport 0x10000000
327 #define D_uid 0x20000000
328 #define D_verify 0x40000000
330 /* The D_all value must always have all bits set, as it is recognized specially
331 by the function that decodes debug and log selectors. This is to enable it to
332 set all the bits in a multi-word selector. Debug doesn't use this yet, but we
333 are getting close. In fact, we want to omit "memory" for -d+all, but can't
334 handle this here. It is fudged externally. */
336 #define D_all 0xffffffff
338 #define D_any (D_all & \
343 #define D_default (0xffffffff & \
354 /* Options bits for logging. Those that will end up in log_write_selector have
355 values < 0x80000000. They can be used in calls to log_write(). The others have
356 values > 0x80000000 and are put into log_extra_selector (without the top bit).
357 These are only ever tested independently. "All" is a magic value that is used
358 only in the name table to set all options in both bit maps. */
360 /* The L_all value must always have all bits set, as it is recognized specially
361 by the function that decodes debug and log selectors. This is to enable it to
362 set all the bits in a multi-word selector. */
364 #define L_all 0xffffffff
366 #define L_address_rewrite 0x00000001
367 #define L_all_parents 0x00000002
368 #define L_connection_reject 0x00000004
369 #define L_delay_delivery 0x00000008
370 #define L_dnslist_defer 0x00000010
371 #define L_etrn 0x00000020
372 #define L_host_lookup_failed 0x00000040
373 #define L_lost_incoming_connection 0x00000080
374 #define L_queue_run 0x00000100
375 #define L_retry_defer 0x00000200
376 #define L_size_reject 0x00000400
377 #define L_skip_delivery 0x00000800
378 #define L_smtp_connection 0x00001000
379 #define L_smtp_incomplete_transaction 0x00002000
380 #define L_smtp_protocol_error 0x00004000
381 #define L_smtp_syntax_error 0x00008000
383 #define LX_acl_warn_skipped 0x80000001
384 #define LX_arguments 0x80000002
385 #define LX_deliver_time 0x80000004
386 #define LX_delivery_size 0x80000008
387 #define LX_ident_timeout 0x80000010
388 #define LX_incoming_interface 0x80000020
389 #define LX_incoming_port 0x80000040
390 #define LX_outgoing_port 0x80000080
391 #define LX_pid 0x80000100
392 #define LX_queue_time 0x80000200
393 #define LX_queue_time_overall 0x80000400
394 #define LX_received_sender 0x80000800
395 #define LX_received_recipients 0x80001000
396 #define LX_rejected_header 0x80002000
397 #define LX_return_path_on_delivery 0x80004000
398 #define LX_sender_on_delivery 0x80008000
399 #define LX_sender_verify_fail 0x80010000
400 #define LX_smtp_confirmation 0x80020000
401 #define LX_smtp_no_mail 0x80040000
402 #define LX_subject 0x80080000
403 #define LX_tls_certificate_verified 0x80100000
404 #define LX_tls_cipher 0x80200000
405 #define LX_tls_peerdn 0x80400000
406 #define LX_unknown_in_list 0x80800000
408 #define L_default (L_connection_reject | \
412 L_host_lookup_failed | \
413 L_lost_incoming_connection | \
419 #define LX_default ((LX_acl_warn_skipped | \
420 LX_rejected_header | \
421 LX_sender_verify_fail | \
422 LX_tls_cipher) & 0x7fffffff)
424 /* Private error numbers for delivery failures, set negative so as not
425 to conflict with system errno values. */
427 #define ERRNO_UNKNOWNERROR (-1)
428 #define ERRNO_USERSLASH (-2)
429 #define ERRNO_EXISTRACE (-3)
430 #define ERRNO_NOTREGULAR (-4)
431 #define ERRNO_NOTDIRECTORY (-5)
432 #define ERRNO_BADUGID (-6)
433 #define ERRNO_BADMODE (-7)
434 #define ERRNO_INODECHANGED (-8)
435 #define ERRNO_LOCKFAILED (-9)
436 #define ERRNO_BADADDRESS2 (-10)
437 #define ERRNO_FORBIDPIPE (-11)
438 #define ERRNO_FORBIDFILE (-12)
439 #define ERRNO_FORBIDREPLY (-13)
440 #define ERRNO_MISSINGPIPE (-14)
441 #define ERRNO_MISSINGFILE (-15)
442 #define ERRNO_MISSINGREPLY (-16)
443 #define ERRNO_BADREDIRECT (-17)
444 #define ERRNO_SMTPCLOSED (-18)
445 #define ERRNO_SMTPFORMAT (-19)
446 #define ERRNO_SPOOLFORMAT (-20)
447 #define ERRNO_NOTABSOLUTE (-21)
448 #define ERRNO_EXIMQUOTA (-22) /* Exim-imposed quota */
449 #define ERRNO_HELD (-23)
450 #define ERRNO_FILTER_FAIL (-24) /* Delivery filter process failure */
451 #define ERRNO_CHHEADER_FAIL (-25) /* Delivery add/remove header failure */
452 #define ERRNO_WRITEINCOMPLETE (-26) /* Delivery write incomplete error */
453 #define ERRNO_EXPANDFAIL (-27) /* Some expansion failed */
454 #define ERRNO_GIDFAIL (-28) /* Failed to get gid */
455 #define ERRNO_UIDFAIL (-29) /* Failed to get uid */
456 #define ERRNO_BADTRANSPORT (-30) /* Unset or non-existent transport */
457 #define ERRNO_MBXLENGTH (-31) /* MBX length mismatch */
458 #define ERRNO_UNKNOWNHOST (-32) /* Lookup failed in smtp transport */
459 #define ERRNO_FORMATUNKNOWN (-33) /* Can't match format in appendfile */
460 #define ERRNO_BADCREATE (-34) /* Creation outside home in appendfile */
461 #define ERRNO_LISTDEFER (-35) /* Can't check a list; lookup defer */
462 #define ERRNO_DNSDEFER (-36) /* DNS lookup defer */
463 #define ERRNO_TLSFAILURE (-37) /* Failed to start TLS session */
464 #define ERRNO_TLSREQUIRED (-38) /* Mandatory TLS session not started */
465 #define ERRNO_CHOWNFAIL (-39) /* Failed to chown a file */
466 #define ERRNO_PIPEFAIL (-40) /* Failed to create a pipe */
467 #define ERRNO_CALLOUTDEFER (-41) /* When verifying */
468 #define ERRNO_AUTHFAIL (-42) /* When required by client */
469 #define ERRNO_CONNECTTIMEOUT (-43) /* Used internally in smtp transport */
470 #define ERRNO_RCPT4XX (-44) /* RCPT gave 4xx error */
471 #define ERRNO_MAIL4XX (-45) /* MAIL gave 4xx error */
472 #define ERRNO_DATA4XX (-46) /* DATA gave 4xx error */
474 /* These must be last, so all retry deferments can easily be identified */
476 #define ERRNO_RETRY_BASE (-51) /* Base to test against */
477 #define ERRNO_RRETRY (-51) /* Not time for routing */
478 #define ERRNO_LRETRY (-52) /* Not time for local delivery */
479 #define ERRNO_HRETRY (-53) /* Not time for any remote host */
480 #define ERRNO_LOCAL_ONLY (-54) /* Local-only delivery */
481 #define ERRNO_QUEUE_DOMAIN (-55) /* Domain in queue_domains */
483 /* Special actions to take after failure or deferment. */
486 SPECIAL_NONE, /* No special action */
487 SPECIAL_FREEZE, /* Freeze message */
488 SPECIAL_FAIL, /* Fail the delivery */
489 SPECIAL_WARN /* Send a warning message */
492 /* Flags that get ORed into the more_errno field of an address to give more
493 information about errors for retry purposes. They are greater than 256, because
494 the bottom byte contains 'A' or 'M' for remote addresses, to indicate whether
495 the name was looked up only via an address record or whether MX records were
496 used, respectively. */
498 #define RTEF_CTOUT 0x0100 /* Connection timed out */
500 /* Permission and other options for parse_extract_addresses(),
501 filter_interpret(), and rda_interpret(), i.e. what special things are allowed
502 in redirection operations. Not all apply to all cases. Some of the bits allow
503 and some forbid, reflecting the "allow" and "forbid" options in the redirect
504 router, which were chosen to represent the standard situation for users'
507 #define RDO_BLACKHOLE 0x00000001 /* Forbid :blackhole: */
508 #define RDO_DEFER 0x00000002 /* Allow :defer: or "defer" */
509 #define RDO_EACCES 0x00000004 /* Ignore EACCES */
510 #define RDO_ENOTDIR 0x00000008 /* Ignore ENOTDIR */
511 #define RDO_EXISTS 0x00000010 /* Forbid "exists" in expansion in filter */
512 #define RDO_FAIL 0x00000020 /* Allow :fail: or "fail" */
513 #define RDO_FILTER 0x00000040 /* Allow a filter script */
514 #define RDO_FREEZE 0x00000080 /* Allow "freeze" */
515 #define RDO_INCLUDE 0x00000100 /* Forbid :include: */
516 #define RDO_LOG 0x00000200 /* Forbid "log" */
517 #define RDO_LOOKUP 0x00000400 /* Forbid "lookup" in expansion in filter */
518 #define RDO_PERL 0x00000800 /* Forbid "perl" in expansion in filter */
519 #define RDO_READFILE 0x00001000 /* Forbid "readfile" in exp in filter */
520 #define RDO_READSOCK 0x00002000 /* Forbid "readsocket" in exp in filter */
521 #define RDO_RUN 0x00004000 /* Forbid "run" in expansion in filter */
522 #define RDO_DLFUNC 0x00008000 /* Forbid "dlfunc" in expansion in filter */
523 #define RDO_REALLOG 0x00010000 /* Really do log (not testing/verifying) */
524 #define RDO_REWRITE 0x00020000 /* Rewrite generated addresses */
525 #define RDO_EXIM_FILTER 0x00040000 /* Forbid Exim filters */
526 #define RDO_SIEVE_FILTER 0x00080000 /* Forbid Sieve filters */
527 #define RDO_PREPEND_HOME 0x00100000 /* Prepend $home to relative paths in Exim filter save commands */
529 /* This is the set that apply to expansions in filters */
531 #define RDO_FILTER_EXPANSIONS \
532 (RDO_EXISTS|RDO_LOOKUP|RDO_PERL|RDO_READFILE|RDO_READSOCK|RDO_RUN|RDO_DLFUNC)
534 /* As well as the RDO bits themselves, we need the bit numbers in order to
535 access (most of) the individual bits as separate options. This could be
536 automated, but I haven't bothered. Keep this list in step with the above! */
538 enum { RDON_BLACKHOLE, RDON_DEFER, RDON_EACCES, RDON_ENOTDIR, RDON_EXISTS,
539 RDON_FAIL, RDON_FILTER, RDON_FREEZE, RDON_INCLUDE, RDON_LOG, RDON_LOOKUP,
540 RDON_PERL, RDON_READFILE, RDON_READSOCK, RDON_RUN, RDON_DLFUNC, RDON_REALLOG,
541 RDON_REWRITE, RDON_EXIM_FILTER, RDON_SIEVE_FILTER, RDON_PREPEND_HOME };
543 /* Results of filter or forward file processing. Some are only from a filter;
544 some are only from a forward file. */
547 FF_DELIVERED, /* Success, took significant action */
548 FF_NOTDELIVERED, /* Success, didn't take significant action */
549 FF_BLACKHOLE, /* Blackholing requested */
550 FF_DEFER, /* Defer requested */
551 FF_FAIL, /* Fail requested */
552 FF_INCLUDEFAIL, /* :include: failed */
553 FF_NONEXIST, /* Forward file does not exist */
554 FF_FREEZE, /* Freeze requested */
555 FF_ERROR /* We have a problem */
558 /* Values for identifying particular headers; printing characters are used, so
559 they can be read in the spool file for those headers that are permanently
560 marked. The lower case values don't get onto the spool; they are used only as
561 return values from header_checkname(). */
563 #define htype_other ' ' /* Unspecified header */
564 #define htype_from 'F'
567 #define htype_bcc 'B'
568 #define htype_id 'I' /* for message-id */
569 #define htype_reply_to 'R'
570 #define htype_received 'P' /* P for Postmark */
571 #define htype_sender 'S'
572 #define htype_old '*' /* Replaced header */
574 #define htype_date 'd'
575 #define htype_return_path 'p'
576 #define htype_delivery_date 'x'
577 #define htype_envelope_to 'e'
578 #define htype_subject 's'
580 /* These values are used only when adding new headers from an ACL; they too
581 never get onto the spool. The type of the added header is set by reference
582 to the header name, by calling header_checkname(). */
584 #define htype_add_top 'a'
585 #define htype_add_rec 'r'
586 #define htype_add_bot 'z'
587 #define htype_add_rfc 'f'
589 /* Types of item in options lists. These are the bottom 8 bits of the "type"
590 field, which is an int. The opt_void value is used for entries in tables that
591 point to special types of value that are accessed only indirectly (e.g. the
592 rewrite data that is built out of a string option.) We need to have some values
593 visible in local_scan, so the following are declared there:
595 opt_stringptr, opt_int, opt_octint, opt_mkint, opt_Kint, opt_fixed, opt_time,
598 To make sure we don't conflict, the local_scan.h values start from zero, and
599 those defined here start from 32. The boolean ones must all be together so they
600 can be easily tested as a group. That is the only use of opt_bool_last. */
602 enum { opt_bit = 32, opt_bool_verify, opt_bool_set, opt_expand_bool,
604 opt_rewrite, opt_timelist, opt_uid, opt_gid, opt_uidlist, opt_gidlist,
605 opt_expand_uid, opt_expand_gid, opt_void };
607 /* There's a high-ish bit which is used to flag duplicate options, kept
608 for compatibility, which shouldn't be output. Also used for hidden options
609 that are automatically maintained from others. Another high bit is used to
610 flag driver options that although private (so as to be settable only on some
611 drivers), are stored in the instance block so as to be accessible from outside.
612 A third high bit is set when an option is read, so as to be able to give an
613 error if any option is set twice. Finally, there's a bit which is set when an
614 option is set with the "hide" prefix, to prevent -bP from showing it to
615 non-admin callers. The next byte up in the int is used to keep the bit number
616 for booleans that are kept in one bit. */
618 #define opt_hidden 0x100 /* Private to Exim */
619 #define opt_public 0x200 /* Stored in the main instance block */
620 #define opt_set 0x400 /* Option is set */
621 #define opt_secure 0x800 /* "hide" prefix used */
622 #define opt_mask 0x0ff
624 /* Verify types when directing and routing */
626 enum { v_none, v_sender, v_recipient, v_expn };
628 /* Option flags for verify_address() */
630 #define vopt_fake_sender 0x0001 /* for verify=sender=<address> */
631 #define vopt_is_recipient 0x0002
632 #define vopt_qualify 0x0004
633 #define vopt_expn 0x0008
634 #define vopt_callout_fullpm 0x0010 /* full postmaster during callout */
635 #define vopt_callout_random 0x0020 /* during callout */
636 #define vopt_callout_no_cache 0x0040 /* disable callout cache */
637 #define vopt_callout_recipsender 0x0080 /* use real sender to verify recip */
638 #define vopt_callout_recippmaster 0x0100 /* use postmaster to verify recip */
639 #define vopt_success_on_redirect 0x0200
641 /* Values for fields in callout cache records */
643 #define ccache_unknown 0 /* test hasn't been done */
644 #define ccache_accept 1
645 #define ccache_reject 2 /* All rejections except */
646 #define ccache_reject_mfnull 3 /* MAIL FROM:<> was rejected */
648 /* Options for lookup functions */
650 #define lookup_querystyle 1 /* query-style lookup */
651 #define lookup_absfile 2 /* requires absolute file name */
652 #define lookup_absfilequery 4 /* query-style starts with file name */
654 /* Status values for host_item blocks. Require hstatus_unusable and
655 hstatus_unusable_expired to be last. */
657 enum { hstatus_unknown, hstatus_usable, hstatus_unusable,
658 hstatus_unusable_expired };
660 /* Reasons why a host is unusable (for clearer log messages) */
662 enum { hwhy_unknown, hwhy_retry, hwhy_failed, hwhy_deferred, hwhy_ignored };
664 /* Domain lookup types for routers */
666 enum { lk_default, lk_byname, lk_bydns };
668 /* Values for the self_code fields */
670 enum { self_freeze, self_defer, self_send, self_reroute, self_pass, self_fail };
672 /* Flags for rewrite rules */
674 #define rewrite_sender 0x0001
675 #define rewrite_from 0x0002
676 #define rewrite_to 0x0004
677 #define rewrite_cc 0x0008
678 #define rewrite_bcc 0x0010
679 #define rewrite_replyto 0x0020
680 #define rewrite_all_headers 0x003F /* all header flags */
682 #define rewrite_envfrom 0x0040
683 #define rewrite_envto 0x0080
684 #define rewrite_all_envelope 0x00C0 /* all envelope flags */
686 #define rewrite_all (rewrite_all_headers | rewrite_all_envelope)
688 #define rewrite_smtp 0x0100 /* rewrite at SMTP time */
689 #define rewrite_smtp_sender 0x0200 /* SMTP sender rewrite (allows <>) */
690 #define rewrite_qualify 0x0400 /* qualify if necessary */
691 #define rewrite_repeat 0x0800 /* repeat rewrite rule */
693 #define rewrite_whole 0x1000 /* option bit for headers */
694 #define rewrite_quit 0x2000 /* "no more" option */
696 /* Flags for log_write(); LOG_MAIN, LOG_PANIC, and LOG_REJECT are also in
699 #define LOG_MAIN 1 /* Write to the main log */
700 #define LOG_PANIC 2 /* Write to the panic log */
701 #define LOG_PANIC_DIE 6 /* Write to the panic log and then die */
702 #define LOG_PROCESS 8 /* Write to the process log */
703 #define LOG_REJECT 16 /* Write to the reject log, with headers */
704 #define LOG_SENDER 32 /* Add raw sender to the message */
705 #define LOG_RECIPIENTS 64 /* Add raw recipients to the message */
706 #define LOG_CONFIG 128 /* Add "Exim configuration error" */
707 #define LOG_CONFIG_FOR (256+128) /* Add " for" instead of ":\n" */
708 #define LOG_CONFIG_IN (512+128) /* Add " in line x[ of file y]" */
710 /* SMTP command identifiers for the smtp_connection_had field that records the
711 most recent SMTP commands. Must be kept in step with the list of names in
712 smtp_in.c that is used for creating the smtp_no_mail logging action. SCH_NONE
715 enum { SCH_NONE, SCH_AUTH, SCH_DATA, SCH_EHLO, SCH_ETRN, SCH_EXPN, SCH_HELO,
716 SCH_HELP, SCH_MAIL, SCH_NOOP, SCH_QUIT, SCH_RCPT, SCH_RSET, SCH_STARTTLS,
719 /* Returns from host_find_by{name,dns}() */
722 HOST_FIND_FAILED, /* failed to find the host */
723 HOST_FIND_AGAIN, /* could not resolve at this time */
724 HOST_FOUND, /* found host */
725 HOST_FOUND_LOCAL, /* found, but MX points to local host */
726 HOST_IGNORED /* found but ignored - used internally only */
729 /* Flags for host_find_bydns() */
731 #define HOST_FIND_BY_SRV 0x0001
732 #define HOST_FIND_BY_MX 0x0002
733 #define HOST_FIND_BY_A 0x0004
734 #define HOST_FIND_QUALIFY_SINGLE 0x0008
735 #define HOST_FIND_SEARCH_PARENTS 0x0010
737 /* Actions applied to specific messages. */
739 enum { MSG_DELIVER, MSG_FREEZE, MSG_REMOVE, MSG_THAW, MSG_ADD_RECIPIENT,
740 MSG_MARK_ALL_DELIVERED, MSG_MARK_DELIVERED, MSG_EDIT_SENDER,
741 MSG_SHOW_COPY, MSG_LOAD,
742 /* These ones must be last: a test for >= MSG_SHOW_BODY is used
743 to test for actions that list individual spool files. */
744 MSG_SHOW_BODY, MSG_SHOW_HEADER, MSG_SHOW_LOG };
746 /* Returns from the spool_read_header() function */
749 spool_read_OK, /* success */
750 spool_read_notopen, /* open failed */
751 spool_read_enverror, /* error in the envelope */
752 spool_read_hdrerror /* error in the headers */
755 /* Options for transport_write_message */
757 #define topt_add_return_path 0x001
758 #define topt_add_delivery_date 0x002
759 #define topt_add_envelope_to 0x004
760 #define topt_use_crlf 0x008 /* Terminate lines with CRLF */
761 #define topt_end_dot 0x010 /* Send terminting dot line */
762 #define topt_no_headers 0x020 /* Omit headers */
763 #define topt_no_body 0x040 /* Omit body */
764 #define topt_escape_headers 0x080 /* Apply escape check to headers */
766 /* Codes for the host_find_failed and host_all_ignored options. */
771 #define hff_decline 3
775 /* Router information flags */
777 #define ri_yestransport 0x0001 /* Must have a transport */
778 #define ri_notransport 0x0002 /* Must not have a transport */
780 /* Codes for match types in match_check_list; to any of them, MCL_NOEXPAND may
783 #define MCL_NOEXPAND 16
785 enum { MCL_STRING, MCL_DOMAIN, MCL_HOST, MCL_ADDRESS, MCL_LOCALPART };
787 /* Codes for the places from which ACLs can be called. These are cunningly
788 ordered to make it easy to implement tests for certain ACLs when processing
789 "control" modifiers, by means of a maximum "where" value. Do not modify this
790 order without checking carefully!
793 **** Furthermore, remember to keep these in step with the tables
794 **** of names and response codes in globals.c.
798 enum { ACL_WHERE_RCPT, /* Some controls are for RCPT only */
799 ACL_WHERE_MAIL, /* ) */
800 ACL_WHERE_PREDATA, /* ) There are several tests for "in message", */
801 ACL_WHERE_MIME, /* ) implemented by <= WHERE_NOTSMTP */
802 ACL_WHERE_DKIM, /* ) */
803 ACL_WHERE_DATA, /* ) */
804 ACL_WHERE_NOTSMTP, /* ) */
806 ACL_WHERE_AUTH, /* These remaining ones are not currently */
807 ACL_WHERE_CONNECT, /* required to be in a special order so they */
808 ACL_WHERE_ETRN, /* are just alphabetical. */
812 ACL_WHERE_NOTSMTP_START,
819 /* Situations for spool_write_header() */
821 enum { SW_RECEIVING, SW_DELIVERING, SW_MODIFYING };
823 /* MX fields for hosts not obtained from MX records are always negative.
824 MX_NONE is the default case; lesser values are used when the hosts are
825 randomized in batches. */
829 /* host_item.port defaults to PORT_NONE; the only current case where this
830 is changed before running the transport is when an dnslookup router sets an
831 explicit port number. */
833 #define PORT_NONE (-1)
835 /* Flags for single-key search defaults */
837 #define SEARCH_STAR 0x01
838 #define SEARCH_STARAT 0x02
842 enum { FILTER_UNSET, FILTER_FORWARD, FILTER_EXIM, FILTER_SIEVE };
844 /* C99 defines va_copy() for copying a varargs ap so that it can be reused,
845 since on some platforms multiple iterations of va_start()/va_end() are not
846 supported. But va_copy() is itself not so portable. Hack around it.
847 See portability notes at: http://unixpapa.com/incnote/variadic.html */
849 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
850 /* va_copy exists for us or the system is broken and we need OS hacks */
851 #elif defined(va_copy)
852 /* trust it; hope that va_copy is always a macro when defined */
853 #elif !defined(va_copy) && defined(__va_copy)
854 #define va_copy(dest, src) __va_copy(dest, src)
856 #define va_copy(dest, src) do { memcpy(dest, src, sizeof(va_list) } while (0)
859 /* End of macros.h */