src/src/macros.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2018 */
   6 /* Copyright (c) The Exim Maintainers 2020 */
   7 /* See the file NOTICE for conditions of use and distribution. */
   8
   9
  10 /* These two macros make it possible to obtain the result of macro-expanding
  11 a string as a text string. This is sometimes useful for debugging output. */
  12
  13 #define mac_string(s) # s
  14 #define mac_expanded_string(s) mac_string(s)
  15
  16 /* Number of elements of an array */
  17 #define nelem(arr) (sizeof(arr) / sizeof(*arr))
  18
  19 /* Maximum of two items */
  20 #ifndef MAX
  21 # define MAX(a,b) ((a) > (b) ? (a) : (b))
  22 #endif
  23
  24
  25 /* When running in the test harness, the load average is fudged. */
  26
  27 #define OS_GETLOADAVG() \
  28   (f.running_in_test_harness? (test_harness_load_avg += 10) : os_getloadavg())
  29
  30
  31 /* The address_item structure has a struct full of 1-bit flags. These macros
  32 manipulate them. */
  33
  34 #define setflag(addr, flagname)    addr->flags.flagname = TRUE
  35 #define clearflag(addr, flagname)  addr->flags.flagname = FALSE
  36
  37 #define testflag(addr, flagname)   (addr->flags.flagname)
  38
  39 #define copyflag(addrnew, addrold, flagname) \
  40   addrnew->flags.flagname = addrold->flags.flagname
  41
  42
  43 /* For almost all calls to convert things to printing characters, we want to
  44 allow tabs. A macro just makes life a bit easier. */
  45
  46 #define string_printing(s) string_printing2((s), TRUE)
  47
  48
  49 /* We need a special return code for "no recipients and failed to send an error
  50 message". ANSI C defines only EXIT_FAILURE and EXIT_SUCCESS. On the assumption
  51 that these are always 1 and 0 on Unix systems ... */
  52
  53 #define EXIT_NORECIPIENTS 2
  54
  55
  56 /* Character-handling macros. It seems that the set of standard functions in
  57 ctype.h aren't actually all that useful. One reason for this is that email is
  58 international, so the concept of using a locale to vary what they do is not
  59 helpful. Another problem is that in different operating systems, the libraries
  60 yield different results, even in the default locale. For example, Linux yields
  61 TRUE for iscntrl() for all characters > 127, whereas many other systems yield
  62 FALSE. For these reasons we define our own set of macros for a number of
  63 character testing functions. Ensure that all these tests treat their arguments
  64 as unsigned. */
  65
  66 #define mac_iscntrl(c) \
  67   ((uschar)(c) < 32 || (uschar)(c) == 127)
  68
  69 #define mac_iscntrl_or_special(c) \
  70   ((uschar)(c) < 32 || strchr(" ()<>@,;:\\\".[]\177", (uschar)(c)) != NULL)
  71
  72 #define mac_isgraph(c) \
  73   ((uschar)(c) > 32 && (uschar)(c) != 127)
  74
  75 #define mac_isprint(c) \
  76   (((uschar)(c) >= 32 && (uschar)(c) <= 126) || c == '\t' || \
  77   ((uschar)(c) > 127 && print_topbitchars))
  78
  79
  80 /* Convenience for testing strings */
  81
  82 #define streqic(Foo, Bar) (strcmpic(Foo, Bar) == 0)
  83
  84
  85 /* When built with TLS support, the act of flushing SMTP output becomes
  86 a no-op once an SSL session is in progress. */
  87
  88 #ifndef DISABLE_TLS
  89 #define mac_smtp_fflush() if (tls_in.active.sock < 0) fflush(smtp_out);
  90 #else
  91 #define mac_smtp_fflush() fflush(smtp_out);
  92 #endif
  93
  94
  95 /* Define which ends of pipes are for reading and writing, as some systems
  96 don't make the file descriptors two-way. */
  97
  98 #define pipe_read  0
  99 #define pipe_write 1
 100
 101 /* The RFC 1413 ident port */
 102
 103 #define IDENT_PORT 113
 104
 105 /* A macro to simplify testing bits in lookup types */
 106
 107 #define mac_islookup(a,b) ((lookup_list[a]->type & (b)) != 0)
 108
 109 /* Debugging control */
 110
 111 #define DEBUG(x)      if (debug_selector & (x))
 112 #define HDEBUG(x)     if (host_checking || (debug_selector & (x)))
 113
 114 /* The default From: text for DSNs */
 115
 116 #define DEFAULT_DSN_FROM "Mail Delivery System <Mailer-Daemon@$qualify_domain>"
 117
 118 /* The size of the vector for saving/restoring address expansion pointers while
 119 verifying. This has to be explicit because it is referenced in more than one
 120 source module. */
 121
 122 #define ADDRESS_EXPANSIONS_COUNT 18
 123
 124 /* The maximum permitted number of command-line (-D) macro definitions. We
 125 need a limit only to make it easier to generate argument vectors for re-exec
 126 of Exim. */
 127
 128 #define MAX_CLMACROS 10
 129
 130 /* The number of integer variables available in filter files. If this is
 131 changed, then the tables in expand.c for accessing them must be changed too. */
 132
 133 #define FILTER_VARIABLE_COUNT 10
 134
 135 /* The size of the vector holding delay warning times */
 136
 137 #define DELAY_WARNING_SIZE 12
 138
 139 /* The size of the buffer holding the processing information string. */
 140
 141 #define PROCESS_INFO_SIZE 384
 142
 143 /* The size of buffer to get for constructing log entries. Make it big
 144 enough to hold all the headers from a normal kind of message. */
 145
 146 #define LOG_BUFFER_SIZE 8192
 147
 148 /* The size of the circular buffer that remembers recent SMTP commands */
 149
 150 #define SMTP_HBUFF_SIZE 20
 151
 152 /* The initial size of a big buffer for use in various places. It gets put
 153 into big_buffer_size and in some circumstances increased. It should be at least
 154 as long as the maximum path length. */
 155
 156 #ifdef AUTH_HEIMDAL_GSSAPI
 157                 /* RFC 4121 section 5.2, SHOULD support 64K input buffers */
 158 # define __BIG_BUFFER_SIZE 65536
 159 #else
 160 # define __BIG_BUFFER_SIZE 16384
 161 #endif
 162
 163 #if defined PATH_MAX && PATH_MAX > __BIG_BUFFER_SIZE
 164 # define BIG_BUFFER_SIZE PATH_MAX
 165 #elif defined MAXPATHLEN && MAXPATHLEN > __BIG_BUFFER_SIZE
 166 # define BIG_BUFFER_SIZE MAXPATHLEN
 167 #else
 168 # define BIG_BUFFER_SIZE __BIG_BUFFER_SIZE
 169 #endif
 170
 171 /* header size of pipe content
 172    currently: char id, char subid, char[5] length */
 173 #define PIPE_HEADER_SIZE 7
 174
 175 /* This limits the length of data returned by local_scan(). Because it is
 176 written on the spool, it gets read into big_buffer. */
 177
 178 #define LOCAL_SCAN_MAX_RETURN (BIG_BUFFER_SIZE - 24)
 179
 180 /* A limit to the length of an address. RFC 2821 limits the local part to 64
 181 and the domain to 255, so this should be adequate, taking into account quotings
 182 etc. */
 183
 184 #define ADDRESS_MAXLENGTH 512
 185
 186 /* The length of the base names of spool files, which consist of an internal
 187 message id with a trailing "-H" or "-D" added. */
 188
 189 #define SPOOL_NAME_LENGTH (MESSAGE_ID_LENGTH+2)
 190
 191 /* The maximum number of message ids to store in a waiting database
 192 record. */
 193
 194 #define WAIT_NAME_MAX 50
 195
 196 /* Wait this long before determining that a Proxy Protocol configured
 197 host isn't speaking the protocol, and so is disallowed. Can be moved to
 198 runtime configuration if per site settings become needed. */
 199 #ifdef SUPPORT_PROXY
 200 #define PROXY_NEGOTIATION_TIMEOUT_SEC 3
 201 #define PROXY_NEGOTIATION_TIMEOUT_USEC 0
 202 #endif
 203
 204 /* Fixed option values for all PCRE functions */
 205
 206 #define PCRE_COPT 0   /* compile */
 207 #define PCRE_EOPT 0   /* exec */
 208
 209 /* Macros for trivial functions */
 210
 211 #define mac_ismsgid(s) \
 212   (pcre_exec(regex_ismsgid,NULL,CS s,Ustrlen(s),0,PCRE_EOPT,NULL,0) >= 0)
 213
 214
 215 /* Options for dns_next_rr */
 216
 217 enum { RESET_NEXT, RESET_ANSWERS, RESET_AUTHORITY, RESET_ADDITIONAL };
 218
 219 /* Argument values for the time-of-day function */
 220
 221 enum { tod_log, tod_log_bare, tod_log_zone, tod_log_datestamp_daily,
 222        tod_log_datestamp_monthly, tod_zone, tod_full, tod_bsdin,
 223        tod_mbx, tod_epoch, tod_epoch_l, tod_zulu };
 224
 225 /* For identifying types of driver */
 226
 227 enum {
 228   EXIM_DTYPE_NONE,
 229   EXIM_DTYPE_ROUTER,
 230   EXIM_DTYPE_TRANSPORT
 231 };
 232
 233 /* Error numbers for generating error messages when reading a message on the
 234 standard input. */
 235
 236 enum {
 237   ERRMESS_BADARGADDRESS,    /* Bad address via argument list */
 238   ERRMESS_BADADDRESS,       /* Bad address read via -t */
 239   ERRMESS_NOADDRESS,        /* Message has no addresses */
 240   ERRMESS_IGADDRESS,        /* All -t addresses ignored */
 241   ERRMESS_BADNOADDRESS,     /* Bad address via -t, leaving none */
 242   ERRMESS_IOERR,            /* I/O error while reading a message */
 243   ERRMESS_VLONGHEADER,      /* Excessively long message header */
 244   ERRMESS_VLONGHDRLINE,     /* Excessively long single line in header */
 245   ERRMESS_TOOBIG,           /* Message too big */
 246   ERRMESS_TOOMANYRECIP,     /* Too many recipients */
 247   ERRMESS_LOCAL_SCAN,       /* Rejected by local scan */
 248   ERRMESS_LOCAL_ACL         /* Rejected by non-SMTP ACL */
 249 #ifdef SUPPORT_DMARC
 250  ,ERRMESS_DMARC_FORENSIC    /* DMARC Forensic Report */
 251 #endif
 252 };
 253
 254 /* Error handling styles - set by option, and apply only when receiving
 255 a local message not via SMTP. */
 256
 257 enum {
 258   ERRORS_SENDER,            /* Return to sender (default) */
 259   ERRORS_STDERR             /* Write on stderr */
 260 };
 261
 262 /* Exec control values when Exim execs itself via child_exec_exim. */
 263
 264 enum {
 265   CEE_RETURN_ARGV,          /* Don't exec, just build and return argv */
 266   CEE_EXEC_EXIT,            /* Just exit if exec fails */
 267   CEE_EXEC_PANIC            /* Panic-die if exec fails */
 268 };
 269
 270 /* Bit values for filter_test */
 271
 272 #define FTEST_NONE     0    /* Not filter testing */
 273 #define FTEST_USER     1    /* Testing user filter */
 274 #define FTEST_SYSTEM   2    /* Testing system filter */
 275
 276 /* Returns from the routing, transport and authentication functions (not all
 277 apply to all of them). Some other functions also use these convenient values,
 278 and some additional values are used only by non-driver functions.
 279
 280 OK, FAIL, DEFER, ERROR, and FAIL_FORCED are also declared in local_scan.h for
 281 use in the local_scan() function and in ${dlfunc loaded functions. Do not
 282 change them unilaterally.
 283
 284 Use rc_names[] for debug strings. */
 285
 286 #define  OK            0    /* Successful match */
 287 #define  DEFER         1    /* Defer - some problem */
 288 #define  FAIL          2    /* Matching failed */
 289 #define  ERROR         3    /* Internal or config error */
 290 #define  FAIL_FORCED   4    /* "Forced" failure */
 291 /***********/
 292 #define DECLINE        5    /* Declined to handle the address, pass to next
 293                                  router unless no_more is set */
 294 #define PASS           6    /* Pass to next driver, or to pass_router,
 295                                  even if no_more is set */
 296 #define DISCARD        7    /* Address routed to :blackhole: or "seen finish" */
 297 #define SKIP           8    /* Skip this router (used in route_address only) */
 298 #define REROUTED       9    /* Address was changed and child created*/
 299 #define PANIC         10    /* Hard failed with internal error */
 300 #define BAD64         11    /* Bad base64 data (auth) */
 301 #define UNEXPECTED    12    /* Unexpected initial auth data */
 302 #define CANCELLED     13    /* Authentication cancelled */
 303 #define FAIL_SEND     14    /* send() failed in authenticator */
 304 #define FAIL_DROP     15    /* Fail and drop connection (used in ACL) */
 305
 306 /* Returns from the deliver_message() function */
 307
 308 #define DELIVER_ATTEMPTED_NORMAL   0  /* Tried a normal delivery */
 309 #define DELIVER_MUA_SUCCEEDED      1  /* Success when mua_wrapper is set */
 310 #define DELIVER_MUA_FAILED         2  /* Failure when mua_wrapper is set */
 311 #define DELIVER_NOT_ATTEMPTED      3  /* Not tried (no msg or is locked */
 312
 313 /* Returns from DNS lookup functions. */
 314
 315 enum { DNS_SUCCEED, DNS_NOMATCH, DNS_NODATA, DNS_AGAIN, DNS_FAIL };
 316
 317 /* Ending states when reading a message. The order is important. The test
 318 for having to swallow the rest of an SMTP message is whether the value is
 319 >= END_NOTENDED. */
 320
 321 #define END_NOTSTARTED 0    /* Message not started */
 322 #define END_DOT        1    /* Message ended with '.' */
 323 #define END_EOF        2    /* Message ended with EOF (error for SMTP) */
 324 #define END_NOTENDED   3    /* Message reading not yet ended */
 325 #define END_SIZE       4    /* Reading ended because message too big */
 326 #define END_WERROR     5    /* Write error while reading the message */
 327 #define END_PROTOCOL   6    /* Protocol error in CHUNKING sequence */
 328
 329 /* result codes for bdat_getc() (which can also return EOF) */
 330
 331 #define EOD (-2)
 332 #define ERR (-3)
 333
 334
 335 /* Bit masks for debug and log selectors */
 336
 337 /* Assume words are 32 bits wide. Tiny waste of space on 64 bit
 338 platforms, but this ensures bit vectors always work the same way. */
 339 #define BITWORDSIZE 32
 340
 341 /* This macro is for single-word bit vectors: the debug selector,
 342 and the first word of the log selector. */
 343 #define BIT(n) (1UL << (n))
 344
 345 /* And these are for multi-word vectors. */
 346 #define BITWORD(n) (      (n) / BITWORDSIZE)
 347 #define BITMASK(n) (1U << (n) % BITWORDSIZE)
 348
 349 #define BIT_CLEAR(s,z,n) ((s)[BITWORD(n)] &= ~BITMASK(n))
 350 #define BIT_SET(s,z,n)   ((s)[BITWORD(n)] |=  BITMASK(n))
 351 #define BIT_TEST(s,z,n) (((s)[BITWORD(n)] &   BITMASK(n)) != 0)
 352
 353 /* Used in globals.c for initializing bit_table structures. T will be either
 354 D or L corresponding to the debug and log selector bits declared below. */
 355
 356 #define BIT_TABLE(T,name) { US #name, T##i_##name }
 357
 358 /* IOTA allows us to keep an implicit sequential count, like a simple enum,
 359 but we can have sequentially numbered identifiers which are not declared
 360 sequentially. We use this for more compact declarations of bit indexes and
 361 masks, alternating between sequential bit index and corresponding mask. */
 362
 363 #define IOTA(iota)      (__LINE__ - iota)
 364 #define IOTA_INIT(zero) (__LINE__ - zero + 1)
 365
 366 /* Options bits for debugging. DEBUG_BIT() declares both a bit index and the
 367 corresponding mask. Di_all is a special value recognized by decode_bits().
 368 These must match the debug_options table in globals.c .
 369
 370 Exim's code assumes in a number of places that the debug_selector is one
 371 word, and this is exposed in the local_scan ABI. The D_v and D_local_scan bit
 372 masks are part of the local_scan API so are #defined in local_scan.h */
 373
 374 #define DEBUG_BIT(name) Di_##name = IOTA(Di_iota), D_##name = (int)BIT(Di_##name)
 375
 376 enum {
 377   Di_all        = -1,
 378   Di_v          = 0,
 379   Di_local_scan = 1,
 380
 381   Di_iota = IOTA_INIT(2),
 382   DEBUG_BIT(acl),               /* 2 */
 383   DEBUG_BIT(auth),
 384   DEBUG_BIT(deliver),
 385   DEBUG_BIT(dns),
 386   DEBUG_BIT(dnsbl),
 387   DEBUG_BIT(exec),              /* 7 */
 388   DEBUG_BIT(expand),
 389   DEBUG_BIT(filter),
 390   DEBUG_BIT(hints_lookup),
 391   DEBUG_BIT(host_lookup),
 392   DEBUG_BIT(ident),
 393   DEBUG_BIT(interface),
 394   DEBUG_BIT(lists),
 395   DEBUG_BIT(load),              /* 15 */
 396   DEBUG_BIT(lookup),
 397   DEBUG_BIT(memory),
 398   DEBUG_BIT(noutf8),
 399   DEBUG_BIT(pid),
 400   DEBUG_BIT(process_info),
 401   DEBUG_BIT(queue_run),
 402   DEBUG_BIT(receive),
 403   DEBUG_BIT(resolver),          /* 23 */
 404   DEBUG_BIT(retry),
 405   DEBUG_BIT(rewrite),
 406   DEBUG_BIT(route),
 407   DEBUG_BIT(timestamp),
 408   DEBUG_BIT(tls),
 409   DEBUG_BIT(transport),
 410   DEBUG_BIT(uid),
 411   DEBUG_BIT(verify),            /* 31 */
 412 };
 413
 414 /* Multi-bit debug masks */
 415
 416 #define D_all                        0xffffffff
 417
 418 #define D_any                        (D_all & \
 419                                        ~(D_v           | \
 420                                          D_noutf8      | \
 421                                          D_pid         | \
 422                                          D_timestamp)  )
 423
 424 #define D_default                    (0xffffffff & \
 425                                        ~(D_expand      | \
 426                                          D_filter      | \
 427                                          D_interface   | \
 428                                          D_load        | \
 429                                          D_local_scan  | \
 430                                          D_memory      | \
 431                                          D_noutf8      | \
 432                                          D_pid         | \
 433                                          D_timestamp   | \
 434                                          D_resolver))
 435
 436 /* Options bits for logging. Those that have values < BITWORDSIZE can be used
 437 in calls to log_write(). The others are put into later words in log_selector
 438 and are only ever tested independently, so they do not need bit mask
 439 declarations. The Li_all value is recognized specially by decode_bits().
 440 Add also to log_options[] when creating new ones. */
 441
 442 #define LOG_BIT(name) Li_##name = IOTA(Li_iota), L_##name = BIT(Li_##name)
 443
 444 enum logbit {
 445   Li_all = -1,
 446
 447   Li_iota = IOTA_INIT(0),
 448   LOG_BIT(address_rewrite),
 449   LOG_BIT(all_parents),
 450   LOG_BIT(connection_reject),
 451   LOG_BIT(delay_delivery),
 452   LOG_BIT(dnslist_defer),
 453   LOG_BIT(etrn),
 454   LOG_BIT(host_lookup_failed),
 455   LOG_BIT(lost_incoming_connection),
 456   LOG_BIT(queue_run),
 457   LOG_BIT(retry_defer),
 458   LOG_BIT(size_reject),
 459   LOG_BIT(skip_delivery),
 460   LOG_BIT(smtp_connection),
 461   LOG_BIT(smtp_incomplete_transaction),
 462   LOG_BIT(smtp_protocol_error),
 463   LOG_BIT(smtp_syntax_error),
 464
 465   Li_8bitmime = BITWORDSIZE,
 466   Li_acl_warn_skipped,
 467   Li_arguments,
 468   Li_deliver_time,
 469   Li_delivery_size,
 470   Li_dkim,
 471   Li_dkim_verbose,
 472   Li_dnssec,
 473   Li_ident_timeout,
 474   Li_incoming_interface,
 475   Li_incoming_port,
 476   Li_millisec,
 477   Li_msg_id,
 478   Li_msg_id_created,
 479   Li_outgoing_interface,
 480   Li_outgoing_port,
 481   Li_pid,
 482   Li_pipelining,
 483   Li_proxy,
 484   Li_queue_time,
 485   Li_queue_time_overall,
 486   Li_receive_time,
 487   Li_received_sender,
 488   Li_received_recipients,
 489   Li_rejected_header,
 490   Li_return_path_on_delivery,
 491   Li_sender_on_delivery,
 492   Li_sender_verify_fail,
 493   Li_smtp_confirmation,
 494   Li_smtp_mailauth,
 495   Li_smtp_no_mail,
 496   Li_subject,
 497   Li_tls_certificate_verified,
 498   Li_tls_cipher,
 499   Li_tls_peerdn,
 500   Li_tls_resumption,
 501   Li_tls_sni,
 502   Li_unknown_in_list,
 503
 504   log_selector_size = BITWORD(Li_unknown_in_list) + 1
 505 };
 506
 507 #define LOGGING(opt) BIT_TEST(log_selector, log_selector_size, Li_##opt)
 508
 509 /* Private error numbers for delivery failures, set negative so as not
 510 to conflict with system errno values.  Take care to maintain the string
 511 table exim_errstrings[] in log.c */
 512
 513 #define ERRNO_UNKNOWNERROR    (-1)
 514 #define ERRNO_USERSLASH       (-2)
 515 #define ERRNO_EXISTRACE       (-3)
 516 #define ERRNO_NOTREGULAR      (-4)
 517 #define ERRNO_NOTDIRECTORY    (-5)
 518 #define ERRNO_BADUGID         (-6)
 519 #define ERRNO_BADMODE         (-7)
 520 #define ERRNO_INODECHANGED    (-8)
 521 #define ERRNO_LOCKFAILED      (-9)
 522 #define ERRNO_BADADDRESS2    (-10)
 523 #define ERRNO_FORBIDPIPE     (-11)
 524 #define ERRNO_FORBIDFILE     (-12)
 525 #define ERRNO_FORBIDREPLY    (-13)
 526 #define ERRNO_MISSINGPIPE    (-14)
 527 #define ERRNO_MISSINGFILE    (-15)
 528 #define ERRNO_MISSINGREPLY   (-16)
 529 #define ERRNO_BADREDIRECT    (-17)
 530 #define ERRNO_SMTPCLOSED     (-18)
 531 #define ERRNO_SMTPFORMAT     (-19)
 532 #define ERRNO_SPOOLFORMAT    (-20)
 533 #define ERRNO_NOTABSOLUTE    (-21)
 534 #define ERRNO_EXIMQUOTA      (-22)   /* Exim-imposed quota */
 535 #define ERRNO_HELD           (-23)
 536 #define ERRNO_FILTER_FAIL    (-24)   /* Delivery filter process failure */
 537 #define ERRNO_CHHEADER_FAIL  (-25)   /* Delivery add/remove header failure */
 538 #define ERRNO_WRITEINCOMPLETE (-26)  /* Delivery write incomplete error */
 539 #define ERRNO_EXPANDFAIL     (-27)   /* Some expansion failed */
 540 #define ERRNO_GIDFAIL        (-28)   /* Failed to get gid */
 541 #define ERRNO_UIDFAIL        (-29)   /* Failed to get uid */
 542 #define ERRNO_BADTRANSPORT   (-30)   /* Unset or non-existent transport */
 543 #define ERRNO_MBXLENGTH      (-31)   /* MBX length mismatch */
 544 #define ERRNO_UNKNOWNHOST    (-32)   /* Lookup failed routing or in smtp tpt */
 545 #define ERRNO_FORMATUNKNOWN  (-33)   /* Can't match format in appendfile */
 546 #define ERRNO_BADCREATE      (-34)   /* Creation outside home in appendfile */
 547 #define ERRNO_LISTDEFER      (-35)   /* Can't check a list; lookup defer */
 548 #define ERRNO_DNSDEFER       (-36)   /* DNS lookup defer */
 549 #define ERRNO_TLSFAILURE     (-37)   /* Failed to start TLS session */
 550 #define ERRNO_TLSREQUIRED    (-38)   /* Mandatory TLS session not started */
 551 #define ERRNO_CHOWNFAIL      (-39)   /* Failed to chown a file */
 552 #define ERRNO_PIPEFAIL       (-40)   /* Failed to create a pipe */
 553 #define ERRNO_CALLOUTDEFER   (-41)   /* When verifying */
 554 #define ERRNO_AUTHFAIL       (-42)   /* When required by client */
 555 #define ERRNO_CONNECTTIMEOUT (-43)   /* Used internally in smtp transport */
 556 #define ERRNO_RCPT4XX        (-44)   /* RCPT gave 4xx error */
 557 #define ERRNO_MAIL4XX        (-45)   /* MAIL gave 4xx error */
 558 #define ERRNO_DATA4XX        (-46)   /* DATA gave 4xx error */
 559 #define ERRNO_PROXYFAIL      (-47)   /* Negotiation failed for proxy configured host */
 560 #define ERRNO_AUTHPROB       (-48)   /* Authenticator "other" failure */
 561 #define ERRNO_UTF8_FWD       (-49)   /* target not supporting SMTPUTF8 */
 562 #define ERRNO_HOST_IS_LOCAL  (-50)   /* Transport refuses to talk to localhost */
 563
 564 /* These must be last, so all retry deferments can easily be identified */
 565
 566 #define ERRNO_RETRY_BASE     (-51)   /* Base to test against */
 567 #define ERRNO_RRETRY         (-51)   /* Not time for routing */
 568
 569 #define ERRNO_WARN_BASE      (-52)   /* Base to test against */
 570 #define ERRNO_LRETRY         (-52)   /* Not time for local delivery */
 571 #define ERRNO_HRETRY         (-53)   /* Not time for any remote host */
 572 #define ERRNO_LOCAL_ONLY     (-54)   /* Local-only delivery */
 573 #define ERRNO_QUEUE_DOMAIN   (-55)   /* Domain in queue_domains */
 574 #define ERRNO_TRETRY         (-56)   /* Transport concurrency limit */
 575 #define ERRNO_EVENT          (-57)   /* Event processing request alternate response */
 576
 577
 578
 579 /* Special actions to take after failure or deferment. */
 580
 581 enum {
 582   SPECIAL_NONE,             /* No special action */
 583   SPECIAL_FREEZE,           /* Freeze message */
 584   SPECIAL_FAIL,             /* Fail the delivery */
 585   SPECIAL_WARN              /* Send a warning message */
 586 };
 587
 588 /* Flags that get ORed into the more_errno field of an address to give more
 589 information about errors for retry purposes. They are greater than 256, because
 590 the bottom byte contains 'A' or 'M' for remote addresses, to indicate whether
 591 the name was looked up only via an address record or whether MX records were
 592 used, respectively. */
 593
 594 #define RTEF_CTOUT     0x0100      /* Connection timed out */
 595
 596 /* Permission and other options for parse_extract_addresses(),
 597 filter_interpret(), and rda_interpret(), i.e. what special things are allowed
 598 in redirection operations. Not all apply to all cases. Some of the bits allow
 599 and some forbid, reflecting the "allow" and "forbid" options in the redirect
 600 router, which were chosen to represent the standard situation for users'
 601 .forward files. */
 602
 603 #define RDO_BLACKHOLE    0x00000001  /* Forbid :blackhole: */
 604 #define RDO_DEFER        0x00000002  /* Allow :defer: or "defer" */
 605 #define RDO_EACCES       0x00000004  /* Ignore EACCES */
 606 #define RDO_ENOTDIR      0x00000008  /* Ignore ENOTDIR */
 607 #define RDO_EXISTS       0x00000010  /* Forbid "exists" in expansion in filter */
 608 #define RDO_FAIL         0x00000020  /* Allow :fail: or "fail" */
 609 #define RDO_FILTER       0x00000040  /* Allow a filter script */
 610 #define RDO_FREEZE       0x00000080  /* Allow "freeze" */
 611 #define RDO_INCLUDE      0x00000100  /* Forbid :include: */
 612 #define RDO_LOG          0x00000200  /* Forbid "log" */
 613 #define RDO_LOOKUP       0x00000400  /* Forbid "lookup" in expansion in filter */
 614 #define RDO_PERL         0x00000800  /* Forbid "perl" in expansion in filter */
 615 #define RDO_READFILE     0x00001000  /* Forbid "readfile" in exp in filter */
 616 #define RDO_READSOCK     0x00002000  /* Forbid "readsocket" in exp in filter */
 617 #define RDO_RUN          0x00004000  /* Forbid "run" in expansion in filter */
 618 #define RDO_DLFUNC       0x00008000  /* Forbid "dlfunc" in expansion in filter */
 619 #define RDO_REALLOG      0x00010000  /* Really do log (not testing/verifying) */
 620 #define RDO_REWRITE      0x00020000  /* Rewrite generated addresses */
 621 #define RDO_EXIM_FILTER  0x00040000  /* Forbid Exim filters */
 622 #define RDO_SIEVE_FILTER 0x00080000  /* Forbid Sieve filters */
 623 #define RDO_PREPEND_HOME 0x00100000  /* Prepend $home to relative paths in Exim filter save commands */
 624
 625 /* This is the set that apply to expansions in filters */
 626
 627 #define RDO_FILTER_EXPANSIONS \
 628   (RDO_EXISTS|RDO_LOOKUP|RDO_PERL|RDO_READFILE|RDO_READSOCK|RDO_RUN|RDO_DLFUNC)
 629
 630 /* As well as the RDO bits themselves, we need the bit numbers in order to
 631 access (most of) the individual bits as separate options. This could be
 632 automated, but I haven't bothered. Keep this list in step with the above! */
 633
 634 enum { RDON_BLACKHOLE, RDON_DEFER, RDON_EACCES, RDON_ENOTDIR, RDON_EXISTS,
 635   RDON_FAIL, RDON_FILTER, RDON_FREEZE, RDON_INCLUDE, RDON_LOG, RDON_LOOKUP,
 636   RDON_PERL, RDON_READFILE, RDON_READSOCK, RDON_RUN, RDON_DLFUNC, RDON_REALLOG,
 637   RDON_REWRITE, RDON_EXIM_FILTER, RDON_SIEVE_FILTER, RDON_PREPEND_HOME };
 638
 639 /* Results of filter or forward file processing. Some are only from a filter;
 640 some are only from a forward file. */
 641
 642 enum {
 643   FF_DELIVERED,         /* Success, took significant action */
 644   FF_NOTDELIVERED,      /* Success, didn't take significant action */
 645   FF_BLACKHOLE,         /* Blackholing requested */
 646   FF_DEFER,             /* Defer requested */
 647   FF_FAIL,              /* Fail requested */
 648   FF_INCLUDEFAIL,       /* :include: failed */
 649   FF_NONEXIST,          /* Forward file does not exist */
 650   FF_FREEZE,            /* Freeze requested */
 651   FF_ERROR              /* We have a problem */
 652 };
 653
 654 /* Values for identifying particular headers; printing characters are used, so
 655 they can be read in the spool file for those headers that are permanently
 656 marked. The lower case values don't get onto the spool; they are used only as
 657 return values from header_checkname(). */
 658
 659 #define htype_other         ' '   /* Unspecified header */
 660 #define htype_from          'F'
 661 #define htype_to            'T'
 662 #define htype_cc            'C'
 663 #define htype_bcc           'B'
 664 #define htype_id            'I'   /* for message-id */
 665 #define htype_reply_to      'R'
 666 #define htype_received      'P'   /* P for Postmark */
 667 #define htype_sender        'S'
 668 #define htype_old           '*'   /* Replaced header */
 669
 670 #define htype_date          'd'
 671 #define htype_return_path   'p'
 672 #define htype_delivery_date 'x'
 673 #define htype_envelope_to   'e'
 674 #define htype_subject       's'
 675
 676 /* These values are used only when adding new headers from an ACL; they too
 677 never get onto the spool. The type of the added header is set by reference
 678 to the header name, by calling header_checkname(). */
 679
 680 #define htype_add_top       'a'
 681 #define htype_add_rec       'r'
 682 #define htype_add_bot       'z'
 683 #define htype_add_rfc       'f'
 684
 685 /* Types of item in options lists. These are the bottom 8 bits of the "type"
 686 field, which is an int. The opt_void value is used for entries in tables that
 687 point to special types of value that are accessed only indirectly (e.g. the
 688 rewrite data that is built out of a string option.) We need to have some values
 689 visible in local_scan, so the following are declared there:
 690
 691   opt_stringptr, opt_int, opt_octint, opt_mkint, opt_Kint, opt_fixed, opt_time,
 692   opt_bool
 693
 694 To make sure we don't conflict, the local_scan.h values start from zero, and
 695 those defined here start from 32. The boolean ones must all be together so they
 696 can be easily tested as a group. That is the only use of opt_bool_last. */
 697
 698 enum { opt_bit = 32, opt_bool_verify, opt_bool_set, opt_expand_bool,
 699   opt_bool_last,
 700   opt_rewrite, opt_timelist, opt_uid, opt_gid, opt_uidlist, opt_gidlist,
 701   opt_expand_uid, opt_expand_gid, opt_func, opt_void };
 702
 703 /* There's a high-ish bit which is used to flag duplicate options, kept
 704 for compatibility, which shouldn't be output. Also used for hidden options
 705 that are automatically maintained from others. Another high bit is used to
 706 flag driver options that although private (so as to be settable only on some
 707 drivers), are stored in the instance block so as to be accessible from outside.
 708 A third high bit is set when an option is read, so as to be able to give an
 709 error if any option is set twice. Finally, there's a bit which is set when an
 710 option is set with the "hide" prefix, to prevent -bP from showing it to
 711 non-admin callers. The next byte up in the int is used to keep the bit number
 712 for booleans that are kept in one bit. */
 713
 714 #define opt_hidden  0x100      /* Private to Exim */
 715 #define opt_public  0x200      /* Stored in the main instance block */
 716 #define opt_set     0x400      /* Option is set */
 717 #define opt_secure  0x800      /* "hide" prefix used */
 718 #define opt_rep_con 0x1000     /* Can be appended to by a repeated line (condition) */
 719 #define opt_rep_str 0x2000     /* Can be appended to by a repeated line (string) */
 720 #define opt_mask    0x00ff
 721
 722 /* Verify types when directing and routing */
 723
 724 enum { v_none, v_sender, v_recipient, v_expn };
 725
 726 /* Option flags for verify_address() */
 727
 728 #define vopt_fake_sender          0x0001   /* for verify=sender=<address> */
 729 #define vopt_is_recipient         0x0002
 730 #define vopt_qualify              0x0004
 731 #define vopt_expn                 0x0008
 732 #define vopt_callout_fullpm       0x0010   /* full postmaster during callout */
 733 #define vopt_callout_random       0x0020   /* during callout */
 734 #define vopt_callout_no_cache     0x0040   /* disable callout cache */
 735 #define vopt_callout_recipsender  0x0080   /* use real sender to verify recip */
 736 #define vopt_callout_recippmaster 0x0100   /* use postmaster to verify recip */
 737 #define vopt_callout_hold         0x0200   /* lazy close connection */
 738 #define vopt_success_on_redirect  0x0400
 739
 740 /* Values for fields in callout cache records */
 741
 742 #define ccache_unknown         0       /* test hasn't been done */
 743 #define ccache_accept          1
 744 #define ccache_reject          2       /* All rejections except */
 745 #define ccache_reject_mfnull   3       /* MAIL FROM:<> was rejected */
 746
 747 /* Options for lookup functions */
 748
 749 #define lookup_querystyle      1    /* query-style lookup */
 750 #define lookup_absfile         2    /* requires absolute file name */
 751 #define lookup_absfilequery    4    /* query-style starts with file name */
 752
 753 /* Status values for host_item blocks. Require hstatus_unusable and
 754 hstatus_unusable_expired to be last. */
 755
 756 enum { hstatus_unknown, hstatus_usable, hstatus_unusable,
 757        hstatus_unusable_expired };
 758
 759 /* Reasons why a host is unusable (for clearer log messages) */
 760
 761 enum { hwhy_unknown, hwhy_retry, hwhy_insecure, hwhy_failed, hwhy_deferred,
 762        hwhy_ignored };
 763
 764 /* Domain lookup types for routers */
 765
 766 #define LK_DEFAULT      BIT(0)
 767 #define LK_BYNAME       BIT(1)
 768 #define LK_BYDNS        BIT(2)  /* those 3 should be mutually exclusive */
 769
 770 #define LK_IPV4_ONLY    BIT(3)
 771 #define LK_IPV4_PREFER  BIT(4)
 772
 773 /* Values for the self_code fields */
 774
 775 enum { self_freeze, self_defer, self_send, self_reroute, self_pass, self_fail };
 776
 777 /* Flags for rewrite rules */
 778
 779 #define rewrite_sender       0x0001
 780 #define rewrite_from         0x0002
 781 #define rewrite_to           0x0004
 782 #define rewrite_cc           0x0008
 783 #define rewrite_bcc          0x0010
 784 #define rewrite_replyto      0x0020
 785 #define rewrite_all_headers  0x003F  /* all header flags */
 786
 787 #define rewrite_envfrom      0x0040
 788 #define rewrite_envto        0x0080
 789 #define rewrite_all_envelope 0x00C0  /* all envelope flags */
 790
 791 #define rewrite_all      (rewrite_all_headers | rewrite_all_envelope)
 792
 793 #define rewrite_smtp         0x0100  /* rewrite at SMTP time */
 794 #define rewrite_smtp_sender  0x0200  /* SMTP sender rewrite (allows <>) */
 795 #define rewrite_qualify      0x0400  /* qualify if necessary */
 796 #define rewrite_repeat       0x0800  /* repeat rewrite rule */
 797
 798 #define rewrite_whole        0x1000  /* option bit for headers */
 799 #define rewrite_quit         0x2000  /* "no more" option */
 800
 801 /* Flags for log_write(); LOG_MAIN, LOG_PANIC, and LOG_REJECT are also in
 802 local_scan.h */
 803
 804 #define LOG_MAIN           1      /* Write to the main log */
 805 #define LOG_PANIC          2      /* Write to the panic log */
 806 #define LOG_PANIC_DIE      6      /* Write to the panic log and then die */
 807 #define LOG_REJECT        16      /* Write to the reject log, with headers */
 808 #define LOG_SENDER        32      /* Add raw sender to the message */
 809 #define LOG_RECIPIENTS    64      /* Add raw recipients to the message */
 810 #define LOG_CONFIG       128      /* Add "Exim configuration error" */
 811 #define LOG_CONFIG_FOR  (256+128) /* Add " for" instead of ":\n" */
 812 #define LOG_CONFIG_IN   (512+128) /* Add " in line x[ of file y]" */
 813
 814 /* and for debug_bits() logging action control: */
 815 #define DEBUG_FROM_CONFIG       0x0001
 816
 817 /* SMTP command identifiers for the smtp_connection_had field that records the
 818 most recent SMTP commands. Must be kept in step with the list of names in
 819 smtp_in.c that is used for creating the smtp_no_mail logging action. SCH_NONE
 820 is "empty". */
 821
 822 enum { SCH_NONE, SCH_AUTH, SCH_DATA, SCH_BDAT,
 823        SCH_EHLO, SCH_ETRN, SCH_EXPN, SCH_HELO,
 824        SCH_HELP, SCH_MAIL, SCH_NOOP, SCH_QUIT, SCH_RCPT, SCH_RSET, SCH_STARTTLS,
 825        SCH_VRFY };
 826
 827 /* Returns from host_find_by{name,dns}() */
 828
 829 enum {
 830   HOST_FIND_FAILED,     /* failed to find the host */
 831   HOST_FIND_AGAIN,      /* could not resolve at this time */
 832   HOST_FIND_SECURITY,   /* dnssec required but not acheived */
 833   HOST_FOUND,           /* found host */
 834   HOST_FOUND_LOCAL,     /* found, but MX points to local host */
 835   HOST_IGNORED          /* found but ignored - used internally only */
 836 };
 837
 838 /* Flags for host_find_bydns() */
 839
 840 #define HOST_FIND_BY_SRV          BIT(0)
 841 #define HOST_FIND_BY_MX           BIT(1)
 842 #define HOST_FIND_BY_A            BIT(2)
 843 #define HOST_FIND_BY_AAAA         BIT(3)
 844 #define HOST_FIND_QUALIFY_SINGLE  BIT(4)
 845 #define HOST_FIND_SEARCH_PARENTS  BIT(5)
 846 #define HOST_FIND_IPV4_FIRST      BIT(6)
 847 #define HOST_FIND_IPV4_ONLY       BIT(7)
 848
 849 /* Actions applied to specific messages. */
 850
 851 enum { MSG_DELIVER, MSG_FREEZE, MSG_REMOVE, MSG_THAW, MSG_ADD_RECIPIENT,
 852        MSG_MARK_ALL_DELIVERED, MSG_MARK_DELIVERED, MSG_EDIT_SENDER,
 853        MSG_SHOW_COPY, MSG_LOAD, MSG_SETQUEUE,
 854        /* These ones must be last: a test for >= MSG_SHOW_BODY is used
 855        to test for actions that list individual spool files. */
 856        MSG_SHOW_BODY, MSG_SHOW_HEADER, MSG_SHOW_LOG };
 857
 858 /* Returns from the spool_read_header() function */
 859
 860 enum {
 861   spool_read_OK,        /* success */
 862   spool_read_notopen,   /* open failed */
 863   spool_read_enverror,  /* error in the envelope */
 864   spool_read_hdrerror   /* error in the headers */
 865 };
 866
 867 /* Options for transport_write_message */
 868
 869 #define topt_add_return_path    0x001
 870 #define topt_add_delivery_date  0x002
 871 #define topt_add_envelope_to    0x004
 872 #define topt_use_crlf           0x008  /* Terminate lines with CRLF */
 873 #define topt_end_dot            0x010  /* Send terminating dot line */
 874 #define topt_no_headers         0x020  /* Omit headers */
 875 #define topt_no_body            0x040  /* Omit body */
 876 #define topt_escape_headers     0x080  /* Apply escape check to headers */
 877 #define topt_use_bdat           0x100  /* prepend chunks with RFC3030 BDAT header */
 878 #define topt_output_string      0x200  /* create string rather than write to fd */
 879 #define topt_continuation       0x400  /* do not reset buffer */
 880 #define topt_not_socket         0x800  /* cannot do socket-only syscalls */
 881
 882 /* Options for smtp_write_command */
 883
 884 enum {
 885   SCMD_FLUSH = 0,       /* write to kernel */
 886   SCMD_MORE,            /* write to kernel, but likely more soon */
 887   SCMD_BUFFER           /* stash in application cmd output buffer */
 888 };
 889
 890 /* Flags for recipient_block, used in DSN support */
 891
 892 #define rf_dsnlasthop           0x01  /* Do not propagate DSN any further */
 893 #define rf_notify_never         0x02  /* NOTIFY= settings */
 894 #define rf_notify_success       0x04
 895 #define rf_notify_failure       0x08
 896 #define rf_notify_delay         0x10
 897
 898 #define rf_dsnflags  (rf_notify_never | rf_notify_success | \
 899                       rf_notify_failure | rf_notify_delay)
 900
 901 /* DSN RET types */
 902
 903 #define dsn_ret_full            1
 904 #define dsn_ret_hdrs            2
 905
 906 #define dsn_support_unknown     0
 907 #define dsn_support_yes         1
 908 #define dsn_support_no          2
 909
 910
 911 /* Codes for the host_find_failed and host_all_ignored options. */
 912
 913 #define hff_freeze   0
 914 #define hff_defer    1
 915 #define hff_pass     2
 916 #define hff_decline  3
 917 #define hff_fail     4
 918 #define hff_ignore   5
 919
 920 /* Router information flags */
 921
 922 #define ri_yestransport    0x0001    /* Must have a transport */
 923 #define ri_notransport     0x0002    /* Must not have a transport */
 924
 925 /* Codes for match types in match_check_list; to any of them, MCL_NOEXPAND may
 926 be added */
 927
 928 #define MCL_NOEXPAND  16
 929
 930 enum { MCL_STRING, MCL_DOMAIN, MCL_HOST, MCL_ADDRESS, MCL_LOCALPART };
 931
 932 /* Codes for the places from which ACLs can be called. These are cunningly
 933 ordered to make it easy to implement tests for certain ACLs when processing
 934 "control" modifiers, by means of a maximum "where" value. Do not modify this
 935 order without checking carefully!
 936
 937 **** IMPORTANT***
 938 ****   Furthermore, remember to keep these in step with the tables
 939 ****   of names and response codes in globals.c.
 940 **** IMPORTANT ****
 941 */
 942
 943 enum { ACL_WHERE_RCPT,       /* Some controls are for RCPT only */
 944        ACL_WHERE_MAIL,       /* )                                           */
 945        ACL_WHERE_PREDATA,    /* ) There are several tests for "in message", */
 946        ACL_WHERE_MIME,       /* ) implemented by <= WHERE_NOTSMTP           */
 947        ACL_WHERE_DKIM,       /* )                                           */
 948        ACL_WHERE_DATA,       /* )                                           */
 949 #ifndef DISABLE_PRDR
 950        ACL_WHERE_PRDR,       /* )                                           */
 951 #endif
 952        ACL_WHERE_NOTSMTP,    /* )                                           */
 953
 954        ACL_WHERE_AUTH,       /* These remaining ones are not currently    */
 955        ACL_WHERE_CONNECT,    /* required to be in a special order so they */
 956        ACL_WHERE_ETRN,       /* are just alphabetical.                    */
 957        ACL_WHERE_EXPN,
 958        ACL_WHERE_HELO,
 959        ACL_WHERE_MAILAUTH,
 960        ACL_WHERE_NOTSMTP_START,
 961        ACL_WHERE_NOTQUIT,
 962        ACL_WHERE_QUIT,
 963        ACL_WHERE_STARTTLS,
 964        ACL_WHERE_VRFY,
 965
 966        ACL_WHERE_DELIVERY,
 967        ACL_WHERE_UNKNOWN     /* Currently used by a ${acl:name} expansion */
 968      };
 969
 970 #define ACL_BIT_RCPT            BIT(ACL_WHERE_RCPT)
 971 #define ACL_BIT_MAIL            BIT(ACL_WHERE_MAIL)
 972 #define ACL_BIT_PREDATA         BIT(ACL_WHERE_PREDATA)
 973 #define ACL_BIT_MIME            BIT(ACL_WHERE_MIME)
 974 #define ACL_BIT_DKIM            BIT(ACL_WHERE_DKIM)
 975 #define ACL_BIT_DATA            BIT(ACL_WHERE_DATA)
 976 #ifndef DISABLE_PRDR
 977 # define ACL_BIT_PRDR           BIT(ACL_WHERE_PRDR)
 978 #endif
 979 #define ACL_BIT_NOTSMTP         BIT(ACL_WHERE_NOTSMTP)
 980 #define ACL_BIT_AUTH            BIT(ACL_WHERE_AUTH)
 981 #define ACL_BIT_CONNECT         BIT(ACL_WHERE_CONNECT)
 982 #define ACL_BIT_ETRN            BIT(ACL_WHERE_ETRN)
 983 #define ACL_BIT_EXPN            BIT(ACL_WHERE_EXPN)
 984 #define ACL_BIT_HELO            BIT(ACL_WHERE_HELO)
 985 #define ACL_BIT_MAILAUTH        BIT(ACL_WHERE_MAILAUTH)
 986 #define ACL_BIT_NOTSMTP_START   BIT(ACL_WHERE_NOTSMTP_START)
 987 #define ACL_BIT_NOTQUIT         BIT(ACL_WHERE_NOTQUIT)
 988 #define ACL_BIT_QUIT            BIT(ACL_WHERE_QUIT)
 989 #define ACL_BIT_STARTTLS        BIT(ACL_WHERE_STARTTLS)
 990 #define ACL_BIT_VRFY            BIT(ACL_WHERE_VRFY)
 991 #define ACL_BIT_DELIVERY        BIT(ACL_WHERE_DELIVERY)
 992 #define ACL_BIT_UNKNOWN         BIT(ACL_WHERE_UNKNOWN)
 993
 994
 995 /* Situations for spool_write_header() */
 996
 997 enum { SW_RECEIVING, SW_DELIVERING, SW_MODIFYING };
 998
 999 /* MX fields for hosts not obtained from MX records are always negative.
1000 MX_NONE is the default case; lesser values are used when the hosts are
1001 randomized in batches. */
1002
1003 #define MX_NONE           (-1)
1004
1005 /* host_item.port defaults to PORT_NONE; the only current case where this
1006 is changed before running the transport is when an dnslookup router sets an
1007 explicit port number. */
1008
1009 #define PORT_NONE     (-1)
1010
1011 /* Flags for single-key search defaults */
1012
1013 #define SEARCH_STAR       0x01
1014 #define SEARCH_STARAT     0x02
1015
1016 /* Filter types */
1017
1018 enum { FILTER_UNSET, FILTER_FORWARD, FILTER_EXIM, FILTER_SIEVE };
1019
1020 /* Codes for ESMTP facilities offered by peer */
1021
1022 #define OPTION_TLS              BIT(0)
1023 #define OPTION_IGNQ             BIT(1)
1024 #define OPTION_PRDR             BIT(2)
1025 #define OPTION_UTF8             BIT(3)
1026 #define OPTION_DSN              BIT(4)
1027 #define OPTION_PIPE             BIT(5)
1028 #define OPTION_SIZE             BIT(6)
1029 #define OPTION_CHUNKING         BIT(7)
1030 #define OPTION_EARLY_PIPE       BIT(8)
1031
1032 /* Argument for *_getc */
1033
1034 #define GETC_BUFFER_UNLIMITED   UINT_MAX
1035
1036 /* UTF-8 chars for line-drawing */
1037
1038 #define UTF8_DOWN_RIGHT         "\xE2\x95\xAD"
1039 #define UTF8_VERT               "\xE2\x94\x82"
1040 #define UTF8_HORIZ              "\xE2\x94\x80"
1041 #define UTF8_VERT_RIGHT         "\xE2\x94\x9C"
1042 #define UTF8_UP_RIGHT           "\xE2\x95\xB0"
1043 #define UTF8_VERT_2DASH         "\xE2\x95\x8E"
1044
1045
1046 /* Options on tls_close */
1047 #define TLS_NO_SHUTDOWN         0
1048 #define TLS_SHUTDOWN_NOWAIT     1
1049 #define TLS_SHUTDOWN_WAIT       2
1050
1051
1052 #ifdef COMPILE_UTILITY
1053 # define ALARM(seconds) alarm(seconds);
1054 # define ALARM_CLR(seconds) alarm(seconds);
1055 #else
1056 /* For debugging of odd alarm-signal problems, stash caller info while the
1057 alarm is active.  Clear it down on cancelling the alarm so we can tell there
1058 should not be one active. */
1059
1060 # define ALARM(seconds) \
1061     debug_selector & D_any \
1062     ? (sigalarm_setter = CUS __FUNCTION__, alarm(seconds)) : alarm(seconds);
1063 # define ALARM_CLR(seconds) \
1064     debug_selector & D_any \
1065     ? (sigalarm_setter = NULL, alarm(seconds)) : alarm(seconds);
1066 #endif
1067
1068 #define AUTHS_REGEX US"\\n250[\\s\\-]AUTH\\s+([\\-\\w \\t]+)(?:\\n|$)"
1069
1070 #define EARLY_PIPE_FEATURE_NAME "X_PIPE_CONNECT"
1071 #define EARLY_PIPE_FEATURE_LEN  14
1072
1073
1074 /* Flags for auth_client_item() */
1075
1076 #define AUTH_ITEM_FIRST BIT(0)
1077 #define AUTH_ITEM_LAST  BIT(1)
1078 #define AUTH_ITEM_IGN64 BIT(2)
1079
1080
1081 /* Flags for tls_{in,out}_resumption */
1082 #define RESUME_SUPPORTED        BIT(0)
1083 #define RESUME_CLIENT_REQUESTED BIT(1)
1084 #define RESUME_CLIENT_SUGGESTED BIT(2)
1085 #define RESUME_SERVER_TICKET    BIT(3)
1086 #define RESUME_USED             BIT(4)
1087
1088 #define RESUME_DECODE_STRING \
1089           US"not requested or offered : 0x02 :client requested, no server ticket" \
1090     ": 0x04 : 0x05 : 0x06 :client offered session, no server action" \
1091     ": 0x08 :no client request: 0x0A :client requested new ticket, server provided" \
1092     ": 0x0C :client offered session, not used: 0x0E :client offered session, server only provided new ticket" \
1093     ": 0x10 :session resumed unasked: 0x12 :session resumed unasked" \
1094     ": 0x14 : 0x15 : 0x16 :session resumed" \
1095     ": 0x18 :session resumed unasked: 0x1A :session resumed unasked" \
1096     ": 0x1C :session resumed: 0x1E :session resumed, also new ticket"
1097
1098 /* Flags for string_vformat */
1099 #define SVFMT_EXTEND            BIT(0)
1100 #define SVFMT_REBUFFER          BIT(1)
1101 #define SVFMT_TAINT_NOCHK       BIT(2)
1102
1103
1104 #define NOTIFIER_SOCKET_NAME    "exim_daemon_notify"
1105 #define NOTIFY_MSG_QRUN         1       /* Notify message types */
1106 #define NOTIFY_QUEUE_SIZE_REQ   2
1107
1108 /* End of macros.h */