src/src/macros.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2018 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8
   9 /* These two macros make it possible to obtain the result of macro-expanding
  10 a string as a text string. This is sometimes useful for debugging output. */
  11
  12 #define mac_string(s) # s
  13 #define mac_expanded_string(s) mac_string(s)
  14
  15 /* Number of elements of an array */
  16 #define nelem(arr) (sizeof(arr) / sizeof(*arr))
  17
  18 /* Maximum of two items */
  19 #ifndef MAX
  20 # define MAX(a,b) ((a) > (b) ? (a) : (b))
  21 #endif
  22
  23
  24 /* When running in the test harness, the load average is fudged. */
  25
  26 #define OS_GETLOADAVG() \
  27   (f.running_in_test_harness? (test_harness_load_avg += 10) : os_getloadavg())
  28
  29
  30 /* The address_item structure has a struct full of 1-bit flags. These macros
  31 manipulate them. */
  32
  33 #define setflag(addr, flagname)    addr->flags.flagname = TRUE
  34 #define clearflag(addr, flagname)  addr->flags.flagname = FALSE
  35
  36 #define testflag(addr, flagname)   (addr->flags.flagname)
  37
  38 #define copyflag(addrnew, addrold, flagname) \
  39   addrnew->flags.flagname = addrold->flags.flagname
  40
  41
  42 /* For almost all calls to convert things to printing characters, we want to
  43 allow tabs. A macro just makes life a bit easier. */
  44
  45 #define string_printing(s) string_printing2((s), TRUE)
  46
  47
  48 /* We need a special return code for "no recipients and failed to send an error
  49 message". ANSI C defines only EXIT_FAILURE and EXIT_SUCCESS. On the assumption
  50 that these are always 1 and 0 on Unix systems ... */
  51
  52 #define EXIT_NORECIPIENTS 2
  53
  54
  55 /* Character-handling macros. It seems that the set of standard functions in
  56 ctype.h aren't actually all that useful. One reason for this is that email is
  57 international, so the concept of using a locale to vary what they do is not
  58 helpful. Another problem is that in different operating systems, the libraries
  59 yield different results, even in the default locale. For example, Linux yields
  60 TRUE for iscntrl() for all characters > 127, whereas many other systems yield
  61 FALSE. For these reasons we define our own set of macros for a number of
  62 character testing functions. Ensure that all these tests treat their arguments
  63 as unsigned. */
  64
  65 #define mac_iscntrl(c) \
  66   ((uschar)(c) < 32 || (uschar)(c) == 127)
  67
  68 #define mac_iscntrl_or_special(c) \
  69   ((uschar)(c) < 32 || strchr(" ()<>@,;:\\\".[]\177", (uschar)(c)) != NULL)
  70
  71 #define mac_isgraph(c) \
  72   ((uschar)(c) > 32 && (uschar)(c) != 127)
  73
  74 #define mac_isprint(c) \
  75   (((uschar)(c) >= 32 && (uschar)(c) <= 126) || c == '\t' || \
  76   ((uschar)(c) > 127 && print_topbitchars))
  77
  78
  79 /* Convenience for testing strings */
  80
  81 #define streqic(Foo, Bar) (strcmpic(Foo, Bar) == 0)
  82
  83
  84 /* When built with TLS support, the act of flushing SMTP output becomes
  85 a no-op once an SSL session is in progress. */
  86
  87 #ifndef DISABLE_TLS
  88 #define mac_smtp_fflush() if (tls_in.active.sock < 0) fflush(smtp_out);
  89 #else
  90 #define mac_smtp_fflush() fflush(smtp_out);
  91 #endif
  92
  93
  94 /* Define which ends of pipes are for reading and writing, as some systems
  95 don't make the file descriptors two-way. */
  96
  97 #define pipe_read  0
  98 #define pipe_write 1
  99
 100 /* The RFC 1413 ident port */
 101
 102 #define IDENT_PORT 113
 103
 104 /* A macro to simplify testing bits in lookup types */
 105
 106 #define mac_islookup(a,b) ((lookup_list[a]->type & (b)) != 0)
 107
 108 /* Debugging control */
 109
 110 #define DEBUG(x)      if (debug_selector & (x))
 111 #define HDEBUG(x)     if (host_checking || (debug_selector & (x)))
 112
 113 #define PTR_CHK(ptr) \
 114 do { \
 115 if ((void *)ptr > (void *)store_get(0)) \
 116   debug_printf("BUG: ptr '%s' beyond arena at %s:%d\n", \
 117         mac_expanded_string(ptr), __FUNCTION__, __LINE__); \
 118 } while(0)
 119
 120 /* The default From: text for DSNs */
 121
 122 #define DEFAULT_DSN_FROM "Mail Delivery System <Mailer-Daemon@$qualify_domain>"
 123
 124 /* The size of the vector for saving/restoring address expansion pointers while
 125 verifying. This has to be explicit because it is referenced in more than one
 126 source module. */
 127
 128 #define ADDRESS_EXPANSIONS_COUNT 18
 129
 130 /* The maximum permitted number of command-line (-D) macro definitions. We
 131 need a limit only to make it easier to generate argument vectors for re-exec
 132 of Exim. */
 133
 134 #define MAX_CLMACROS 10
 135
 136 /* The number of integer variables available in filter files. If this is
 137 changed, then the tables in expand.c for accessing them must be changed too. */
 138
 139 #define FILTER_VARIABLE_COUNT 10
 140
 141 /* The size of the vector holding delay warning times */
 142
 143 #define DELAY_WARNING_SIZE 12
 144
 145 /* The size of the buffer holding the processing information string. */
 146
 147 #define PROCESS_INFO_SIZE 256
 148
 149 /* The size of buffer to get for constructing log entries. Make it big
 150 enough to hold all the headers from a normal kind of message. */
 151
 152 #define LOG_BUFFER_SIZE 8192
 153
 154 /* The size of the circular buffer that remembers recent SMTP commands */
 155
 156 #define SMTP_HBUFF_SIZE 20
 157
 158 /* The initial size of a big buffer for use in various places. It gets put
 159 into big_buffer_size and in some circumstances increased. It should be at least
 160 as long as the maximum path length. */
 161
 162 #if defined PATH_MAX && PATH_MAX > 16384
 163 # define BIG_BUFFER_SIZE PATH_MAX
 164 #elif defined MAXPATHLEN && MAXPATHLEN > 16384
 165 # define BIG_BUFFER_SIZE MAXPATHLEN
 166 #else
 167 # define BIG_BUFFER_SIZE 16384
 168 #endif
 169
 170 /* header size of pipe content
 171    currently: char id, char subid, char[5] length */
 172 #define PIPE_HEADER_SIZE 7
 173
 174 /* This limits the length of data returned by local_scan(). Because it is
 175 written on the spool, it gets read into big_buffer. */
 176
 177 #define LOCAL_SCAN_MAX_RETURN (BIG_BUFFER_SIZE - 24)
 178
 179 /* A limit to the length of an address. RFC 2821 limits the local part to 64
 180 and the domain to 255, so this should be adequate, taking into account quotings
 181 etc. */
 182
 183 #define ADDRESS_MAXLENGTH 512
 184
 185 /* The length of the base names of spool files, which consist of an internal
 186 message id with a trailing "-H" or "-D" added. */
 187
 188 #define SPOOL_NAME_LENGTH (MESSAGE_ID_LENGTH+2)
 189
 190 /* The maximum number of message ids to store in a waiting database
 191 record. */
 192
 193 #define WAIT_NAME_MAX 50
 194
 195 /* Wait this long before determining that a Proxy Protocol configured
 196 host isn't speaking the protocol, and so is disallowed. Can be moved to
 197 runtime configuration if per site settings become needed. */
 198 #ifdef SUPPORT_PROXY
 199 #define PROXY_NEGOTIATION_TIMEOUT_SEC 3
 200 #define PROXY_NEGOTIATION_TIMEOUT_USEC 0
 201 #endif
 202
 203 /* Fixed option values for all PCRE functions */
 204
 205 #define PCRE_COPT 0   /* compile */
 206 #define PCRE_EOPT 0   /* exec */
 207
 208 /* Macros for trivial functions */
 209
 210 #define mac_ismsgid(s) \
 211   (pcre_exec(regex_ismsgid,NULL,CS s,Ustrlen(s),0,PCRE_EOPT,NULL,0) >= 0)
 212
 213
 214 /* Options for dns_next_rr */
 215
 216 enum { RESET_NEXT, RESET_ANSWERS, RESET_AUTHORITY, RESET_ADDITIONAL };
 217
 218 /* Argument values for the time-of-day function */
 219
 220 enum { tod_log, tod_log_bare, tod_log_zone, tod_log_datestamp_daily,
 221        tod_log_datestamp_monthly, tod_zone, tod_full, tod_bsdin,
 222        tod_mbx, tod_epoch, tod_epoch_l, tod_zulu };
 223
 224 /* For identifying types of driver */
 225
 226 enum {
 227   EXIM_DTYPE_NONE,
 228   EXIM_DTYPE_ROUTER,
 229   EXIM_DTYPE_TRANSPORT
 230 };
 231
 232 /* Error numbers for generating error messages when reading a message on the
 233 standard input. */
 234
 235 enum {
 236   ERRMESS_BADARGADDRESS,    /* Bad address via argument list */
 237   ERRMESS_BADADDRESS,       /* Bad address read via -t */
 238   ERRMESS_NOADDRESS,        /* Message has no addresses */
 239   ERRMESS_IGADDRESS,        /* All -t addresses ignored */
 240   ERRMESS_BADNOADDRESS,     /* Bad address via -t, leaving none */
 241   ERRMESS_IOERR,            /* I/O error while reading a message */
 242   ERRMESS_VLONGHEADER,      /* Excessively long message header */
 243   ERRMESS_VLONGHDRLINE,     /* Excessively long single line in header */
 244   ERRMESS_TOOBIG,           /* Message too big */
 245   ERRMESS_TOOMANYRECIP,     /* Too many recipients */
 246   ERRMESS_LOCAL_SCAN,       /* Rejected by local scan */
 247   ERRMESS_LOCAL_ACL         /* Rejected by non-SMTP ACL */
 248 #ifdef EXPERIMENTAL_DMARC
 249  ,ERRMESS_DMARC_FORENSIC    /* DMARC Forensic Report */
 250 #endif
 251 };
 252
 253 /* Error handling styles - set by option, and apply only when receiving
 254 a local message not via SMTP. */
 255
 256 enum {
 257   ERRORS_SENDER,            /* Return to sender (default) */
 258   ERRORS_STDERR             /* Write on stderr */
 259 };
 260
 261 /* Exec control values when Exim execs itself via child_exec_exim. */
 262
 263 enum {
 264   CEE_RETURN_ARGV,          /* Don't exec, just build and return argv */
 265   CEE_EXEC_EXIT,            /* Just exit if exec fails */
 266   CEE_EXEC_PANIC            /* Panic-die if exec fails */
 267 };
 268
 269 /* Bit values for filter_test */
 270
 271 #define FTEST_NONE     0    /* Not filter testing */
 272 #define FTEST_USER     1    /* Testing user filter */
 273 #define FTEST_SYSTEM   2    /* Testing system filter */
 274
 275 /* Returns from the routing, transport and authentication functions (not all
 276 apply to all of them). Some other functions also use these convenient values,
 277 and some additional values are used only by non-driver functions.
 278
 279 OK, FAIL, DEFER, ERROR, and FAIL_FORCED are also declared in local_scan.h for
 280 use in the local_scan() function and in ${dlfunc loaded functions. Do not
 281 change them unilaterally.
 282
 283 Use rc_names[] for debug strings. */
 284
 285 #define  OK            0    /* Successful match */
 286 #define  DEFER         1    /* Defer - some problem */
 287 #define  FAIL          2    /* Matching failed */
 288 #define  ERROR         3    /* Internal or config error */
 289 #define  FAIL_FORCED   4    /* "Forced" failure */
 290 /***********/
 291 #define DECLINE        5    /* Declined to handle the address, pass to next
 292                                  router unless no_more is set */
 293 #define PASS           6    /* Pass to next driver, or to pass_router,
 294                                  even if no_more is set */
 295 #define DISCARD        7    /* Address routed to :blackhole: or "seen finish" */
 296 #define SKIP           8    /* Skip this router (used in route_address only) */
 297 #define REROUTED       9    /* Address was changed and child created*/
 298 #define PANIC         10    /* Hard failed with internal error */
 299 #define BAD64         11    /* Bad base64 data (auth) */
 300 #define UNEXPECTED    12    /* Unexpected initial auth data */
 301 #define CANCELLED     13    /* Authentication cancelled */
 302 #define FAIL_SEND     14    /* send() failed in authenticator */
 303 #define FAIL_DROP     15    /* Fail and drop connection (used in ACL) */
 304
 305 /* Returns from the deliver_message() function */
 306
 307 #define DELIVER_ATTEMPTED_NORMAL   0  /* Tried a normal delivery */
 308 #define DELIVER_MUA_SUCCEEDED      1  /* Success when mua_wrapper is set */
 309 #define DELIVER_MUA_FAILED         2  /* Failure when mua_wrapper is set */
 310 #define DELIVER_NOT_ATTEMPTED      3  /* Not tried (no msg or is locked */
 311
 312 /* Returns from DNS lookup functions. */
 313
 314 enum { DNS_SUCCEED, DNS_NOMATCH, DNS_NODATA, DNS_AGAIN, DNS_FAIL };
 315
 316 /* Ending states when reading a message. The order is important. The test
 317 for having to swallow the rest of an SMTP message is whether the value is
 318 >= END_NOTENDED. */
 319
 320 #define END_NOTSTARTED 0    /* Message not started */
 321 #define END_DOT        1    /* Message ended with '.' */
 322 #define END_EOF        2    /* Message ended with EOF (error for SMTP) */
 323 #define END_NOTENDED   3    /* Message reading not yet ended */
 324 #define END_SIZE       4    /* Reading ended because message too big */
 325 #define END_WERROR     5    /* Write error while reading the message */
 326 #define END_PROTOCOL   6    /* Protocol error in CHUNKING sequence */
 327
 328 /* result codes for bdat_getc() (which can also return EOF) */
 329
 330 #define EOD (-2)
 331 #define ERR (-3)
 332
 333
 334 /* Bit masks for debug and log selectors */
 335
 336 /* Assume words are 32 bits wide. Tiny waste of space on 64 bit
 337 platforms, but this ensures bit vectors always work the same way. */
 338 #define BITWORDSIZE 32
 339
 340 /* This macro is for single-word bit vectors: the debug selector,
 341 and the first word of the log selector. */
 342 #define BIT(n) (1U << (n))
 343
 344 /* And these are for multi-word vectors. */
 345 #define BITWORD(n) (      (n) / BITWORDSIZE)
 346 #define BITMASK(n) (1U << (n) % BITWORDSIZE)
 347
 348 #define BIT_CLEAR(s,z,n) ((s)[BITWORD(n)] &= ~BITMASK(n))
 349 #define BIT_SET(s,z,n)   ((s)[BITWORD(n)] |=  BITMASK(n))
 350 #define BIT_TEST(s,z,n) (((s)[BITWORD(n)] &   BITMASK(n)) != 0)
 351
 352 /* Used in globals.c for initializing bit_table structures. T will be either
 353 D or L corresponding to the debug and log selector bits declared below. */
 354
 355 #define BIT_TABLE(T,name) { US #name, T##i_##name }
 356
 357 /* IOTA allows us to keep an implicit sequential count, like a simple enum,
 358 but we can have sequentially numbered identifiers which are not declared
 359 sequentially. We use this for more compact declarations of bit indexes and
 360 masks, alternating between sequential bit index and corresponding mask. */
 361
 362 #define IOTA(iota)      (__LINE__ - iota)
 363 #define IOTA_INIT(zero) (__LINE__ - zero + 1)
 364
 365 /* Options bits for debugging. DEBUG_BIT() declares both a bit index and the
 366 corresponding mask. Di_all is a special value recognized by decode_bits().
 367 These must match the debug_options table in globals.c .
 368
 369 Exim's code assumes in a number of places that the debug_selector is one
 370 word, and this is exposed in the local_scan ABI. The D_v and D_local_scan bit
 371 masks are part of the local_scan API so are #defined in local_scan.h */
 372
 373 #define DEBUG_BIT(name) Di_##name = IOTA(Di_iota), D_##name = BIT(Di_##name)
 374
 375 enum {
 376   Di_all        = -1,
 377   Di_v          = 0,
 378   Di_local_scan = 1,
 379
 380   Di_iota = IOTA_INIT(2),
 381   DEBUG_BIT(acl),               /* 2 */
 382   DEBUG_BIT(auth),
 383   DEBUG_BIT(deliver),
 384   DEBUG_BIT(dns),
 385   DEBUG_BIT(dnsbl),
 386   DEBUG_BIT(exec),              /* 7 */
 387   DEBUG_BIT(expand),
 388   DEBUG_BIT(filter),
 389   DEBUG_BIT(hints_lookup),
 390   DEBUG_BIT(host_lookup),
 391   DEBUG_BIT(ident),
 392   DEBUG_BIT(interface),
 393   DEBUG_BIT(lists),
 394   DEBUG_BIT(load),              /* 15 */
 395   DEBUG_BIT(lookup),
 396   DEBUG_BIT(memory),
 397   DEBUG_BIT(noutf8),
 398   DEBUG_BIT(pid),
 399   DEBUG_BIT(process_info),
 400   DEBUG_BIT(queue_run),
 401   DEBUG_BIT(receive),
 402   DEBUG_BIT(resolver),          /* 23 */
 403   DEBUG_BIT(retry),
 404   DEBUG_BIT(rewrite),
 405   DEBUG_BIT(route),
 406   DEBUG_BIT(timestamp),
 407   DEBUG_BIT(tls),
 408   DEBUG_BIT(transport),
 409   DEBUG_BIT(uid),
 410   DEBUG_BIT(verify),            /* 31 */
 411 };
 412
 413 /* Multi-bit debug masks */
 414
 415 #define D_all                        0xffffffff
 416
 417 #define D_any                        (D_all & \
 418                                        ~(D_v           | \
 419                                          D_noutf8      | \
 420                                          D_pid         | \
 421                                          D_timestamp)  )
 422
 423 #define D_default                    (0xffffffff & \
 424                                        ~(D_expand      | \
 425                                          D_filter      | \
 426                                          D_interface   | \
 427                                          D_load        | \
 428                                          D_local_scan  | \
 429                                          D_memory      | \
 430                                          D_noutf8      | \
 431                                          D_pid         | \
 432                                          D_timestamp   | \
 433                                          D_resolver))
 434
 435 /* Options bits for logging. Those that have values < BITWORDSIZE can be used
 436 in calls to log_write(). The others are put into later words in log_selector
 437 and are only ever tested independently, so they do not need bit mask
 438 declarations. The Li_all value is recognized specially by decode_bits().
 439 Add also to log_options[] when creating new ones. */
 440
 441 #define LOG_BIT(name) Li_##name = IOTA(Li_iota), L_##name = BIT(Li_##name)
 442
 443 enum logbit {
 444   Li_all = -1,
 445
 446   Li_iota = IOTA_INIT(0),
 447   LOG_BIT(address_rewrite),
 448   LOG_BIT(all_parents),
 449   LOG_BIT(connection_reject),
 450   LOG_BIT(delay_delivery),
 451   LOG_BIT(dnslist_defer),
 452   LOG_BIT(etrn),
 453   LOG_BIT(host_lookup_failed),
 454   LOG_BIT(lost_incoming_connection),
 455   LOG_BIT(queue_run),
 456   LOG_BIT(retry_defer),
 457   LOG_BIT(size_reject),
 458   LOG_BIT(skip_delivery),
 459   LOG_BIT(smtp_connection),
 460   LOG_BIT(smtp_incomplete_transaction),
 461   LOG_BIT(smtp_protocol_error),
 462   LOG_BIT(smtp_syntax_error),
 463
 464   Li_8bitmime = BITWORDSIZE,
 465   Li_acl_warn_skipped,
 466   Li_arguments,
 467   Li_deliver_time,
 468   Li_delivery_size,
 469   Li_dkim,
 470   Li_dkim_verbose,
 471   Li_dnssec,
 472   Li_ident_timeout,
 473   Li_incoming_interface,
 474   Li_incoming_port,
 475   Li_millisec,
 476   Li_msg_id,
 477   Li_msg_id_created,
 478   Li_outgoing_interface,
 479   Li_outgoing_port,
 480   Li_pid,
 481   Li_pipelining,
 482   Li_proxy,
 483   Li_queue_time,
 484   Li_queue_time_overall,
 485   Li_receive_time,
 486   Li_received_sender,
 487   Li_received_recipients,
 488   Li_rejected_header,
 489   Li_return_path_on_delivery,
 490   Li_sender_on_delivery,
 491   Li_sender_verify_fail,
 492   Li_smtp_confirmation,
 493   Li_smtp_mailauth,
 494   Li_smtp_no_mail,
 495   Li_subject,
 496   Li_tls_certificate_verified,
 497   Li_tls_cipher,
 498   Li_tls_peerdn,
 499   Li_tls_resumption,
 500   Li_tls_sni,
 501   Li_unknown_in_list,
 502
 503   log_selector_size = BITWORD(Li_unknown_in_list) + 1
 504 };
 505
 506 #define LOGGING(opt) BIT_TEST(log_selector, log_selector_size, Li_##opt)
 507
 508 /* Private error numbers for delivery failures, set negative so as not
 509 to conflict with system errno values.  Take care to maintain the string
 510 table exim_errstrings[] in log.c */
 511
 512 #define ERRNO_UNKNOWNERROR    (-1)
 513 #define ERRNO_USERSLASH       (-2)
 514 #define ERRNO_EXISTRACE       (-3)
 515 #define ERRNO_NOTREGULAR      (-4)
 516 #define ERRNO_NOTDIRECTORY    (-5)
 517 #define ERRNO_BADUGID         (-6)
 518 #define ERRNO_BADMODE         (-7)
 519 #define ERRNO_INODECHANGED    (-8)
 520 #define ERRNO_LOCKFAILED      (-9)
 521 #define ERRNO_BADADDRESS2    (-10)
 522 #define ERRNO_FORBIDPIPE     (-11)
 523 #define ERRNO_FORBIDFILE     (-12)
 524 #define ERRNO_FORBIDREPLY    (-13)
 525 #define ERRNO_MISSINGPIPE    (-14)
 526 #define ERRNO_MISSINGFILE    (-15)
 527 #define ERRNO_MISSINGREPLY   (-16)
 528 #define ERRNO_BADREDIRECT    (-17)
 529 #define ERRNO_SMTPCLOSED     (-18)
 530 #define ERRNO_SMTPFORMAT     (-19)
 531 #define ERRNO_SPOOLFORMAT    (-20)
 532 #define ERRNO_NOTABSOLUTE    (-21)
 533 #define ERRNO_EXIMQUOTA      (-22)   /* Exim-imposed quota */
 534 #define ERRNO_HELD           (-23)
 535 #define ERRNO_FILTER_FAIL    (-24)   /* Delivery filter process failure */
 536 #define ERRNO_CHHEADER_FAIL  (-25)   /* Delivery add/remove header failure */
 537 #define ERRNO_WRITEINCOMPLETE (-26)  /* Delivery write incomplete error */
 538 #define ERRNO_EXPANDFAIL     (-27)   /* Some expansion failed */
 539 #define ERRNO_GIDFAIL        (-28)   /* Failed to get gid */
 540 #define ERRNO_UIDFAIL        (-29)   /* Failed to get uid */
 541 #define ERRNO_BADTRANSPORT   (-30)   /* Unset or non-existent transport */
 542 #define ERRNO_MBXLENGTH      (-31)   /* MBX length mismatch */
 543 #define ERRNO_UNKNOWNHOST    (-32)   /* Lookup failed routing or in smtp tpt */
 544 #define ERRNO_FORMATUNKNOWN  (-33)   /* Can't match format in appendfile */
 545 #define ERRNO_BADCREATE      (-34)   /* Creation outside home in appendfile */
 546 #define ERRNO_LISTDEFER      (-35)   /* Can't check a list; lookup defer */
 547 #define ERRNO_DNSDEFER       (-36)   /* DNS lookup defer */
 548 #define ERRNO_TLSFAILURE     (-37)   /* Failed to start TLS session */
 549 #define ERRNO_TLSREQUIRED    (-38)   /* Mandatory TLS session not started */
 550 #define ERRNO_CHOWNFAIL      (-39)   /* Failed to chown a file */
 551 #define ERRNO_PIPEFAIL       (-40)   /* Failed to create a pipe */
 552 #define ERRNO_CALLOUTDEFER   (-41)   /* When verifying */
 553 #define ERRNO_AUTHFAIL       (-42)   /* When required by client */
 554 #define ERRNO_CONNECTTIMEOUT (-43)   /* Used internally in smtp transport */
 555 #define ERRNO_RCPT4XX        (-44)   /* RCPT gave 4xx error */
 556 #define ERRNO_MAIL4XX        (-45)   /* MAIL gave 4xx error */
 557 #define ERRNO_DATA4XX        (-46)   /* DATA gave 4xx error */
 558 #define ERRNO_PROXYFAIL      (-47)   /* Negotiation failed for proxy configured host */
 559 #define ERRNO_AUTHPROB       (-48)   /* Authenticator "other" failure */
 560
 561 #ifdef SUPPORT_I18N
 562 # define ERRNO_UTF8_FWD      (-49)   /* target not supporting SMTPUTF8 */
 563 #endif
 564                                 /* -50 free for re-use */
 565
 566 /* These must be last, so all retry deferments can easily be identified */
 567
 568 #define ERRNO_RETRY_BASE     (-51)   /* Base to test against */
 569 #define ERRNO_RRETRY         (-51)   /* Not time for routing */
 570
 571 #define ERRNO_WARN_BASE      (-52)   /* Base to test against */
 572 #define ERRNO_LRETRY         (-52)   /* Not time for local delivery */
 573 #define ERRNO_HRETRY         (-53)   /* Not time for any remote host */
 574 #define ERRNO_LOCAL_ONLY     (-54)   /* Local-only delivery */
 575 #define ERRNO_QUEUE_DOMAIN   (-55)   /* Domain in queue_domains */
 576 #define ERRNO_TRETRY         (-56)   /* Transport concurrency limit */
 577 #define ERRNO_EVENT          (-57)   /* Event processing request alternate response */
 578
 579
 580
 581 /* Special actions to take after failure or deferment. */
 582
 583 enum {
 584   SPECIAL_NONE,             /* No special action */
 585   SPECIAL_FREEZE,           /* Freeze message */
 586   SPECIAL_FAIL,             /* Fail the delivery */
 587   SPECIAL_WARN              /* Send a warning message */
 588 };
 589
 590 /* Flags that get ORed into the more_errno field of an address to give more
 591 information about errors for retry purposes. They are greater than 256, because
 592 the bottom byte contains 'A' or 'M' for remote addresses, to indicate whether
 593 the name was looked up only via an address record or whether MX records were
 594 used, respectively. */
 595
 596 #define RTEF_CTOUT     0x0100      /* Connection timed out */
 597
 598 /* Permission and other options for parse_extract_addresses(),
 599 filter_interpret(), and rda_interpret(), i.e. what special things are allowed
 600 in redirection operations. Not all apply to all cases. Some of the bits allow
 601 and some forbid, reflecting the "allow" and "forbid" options in the redirect
 602 router, which were chosen to represent the standard situation for users'
 603 .forward files. */
 604
 605 #define RDO_BLACKHOLE    0x00000001  /* Forbid :blackhole: */
 606 #define RDO_DEFER        0x00000002  /* Allow :defer: or "defer" */
 607 #define RDO_EACCES       0x00000004  /* Ignore EACCES */
 608 #define RDO_ENOTDIR      0x00000008  /* Ignore ENOTDIR */
 609 #define RDO_EXISTS       0x00000010  /* Forbid "exists" in expansion in filter */
 610 #define RDO_FAIL         0x00000020  /* Allow :fail: or "fail" */
 611 #define RDO_FILTER       0x00000040  /* Allow a filter script */
 612 #define RDO_FREEZE       0x00000080  /* Allow "freeze" */
 613 #define RDO_INCLUDE      0x00000100  /* Forbid :include: */
 614 #define RDO_LOG          0x00000200  /* Forbid "log" */
 615 #define RDO_LOOKUP       0x00000400  /* Forbid "lookup" in expansion in filter */
 616 #define RDO_PERL         0x00000800  /* Forbid "perl" in expansion in filter */
 617 #define RDO_READFILE     0x00001000  /* Forbid "readfile" in exp in filter */
 618 #define RDO_READSOCK     0x00002000  /* Forbid "readsocket" in exp in filter */
 619 #define RDO_RUN          0x00004000  /* Forbid "run" in expansion in filter */
 620 #define RDO_DLFUNC       0x00008000  /* Forbid "dlfunc" in expansion in filter */
 621 #define RDO_REALLOG      0x00010000  /* Really do log (not testing/verifying) */
 622 #define RDO_REWRITE      0x00020000  /* Rewrite generated addresses */
 623 #define RDO_EXIM_FILTER  0x00040000  /* Forbid Exim filters */
 624 #define RDO_SIEVE_FILTER 0x00080000  /* Forbid Sieve filters */
 625 #define RDO_PREPEND_HOME 0x00100000  /* Prepend $home to relative paths in Exim filter save commands */
 626
 627 /* This is the set that apply to expansions in filters */
 628
 629 #define RDO_FILTER_EXPANSIONS \
 630   (RDO_EXISTS|RDO_LOOKUP|RDO_PERL|RDO_READFILE|RDO_READSOCK|RDO_RUN|RDO_DLFUNC)
 631
 632 /* As well as the RDO bits themselves, we need the bit numbers in order to
 633 access (most of) the individual bits as separate options. This could be
 634 automated, but I haven't bothered. Keep this list in step with the above! */
 635
 636 enum { RDON_BLACKHOLE, RDON_DEFER, RDON_EACCES, RDON_ENOTDIR, RDON_EXISTS,
 637   RDON_FAIL, RDON_FILTER, RDON_FREEZE, RDON_INCLUDE, RDON_LOG, RDON_LOOKUP,
 638   RDON_PERL, RDON_READFILE, RDON_READSOCK, RDON_RUN, RDON_DLFUNC, RDON_REALLOG,
 639   RDON_REWRITE, RDON_EXIM_FILTER, RDON_SIEVE_FILTER, RDON_PREPEND_HOME };
 640
 641 /* Results of filter or forward file processing. Some are only from a filter;
 642 some are only from a forward file. */
 643
 644 enum {
 645   FF_DELIVERED,         /* Success, took significant action */
 646   FF_NOTDELIVERED,      /* Success, didn't take significant action */
 647   FF_BLACKHOLE,         /* Blackholing requested */
 648   FF_DEFER,             /* Defer requested */
 649   FF_FAIL,              /* Fail requested */
 650   FF_INCLUDEFAIL,       /* :include: failed */
 651   FF_NONEXIST,          /* Forward file does not exist */
 652   FF_FREEZE,            /* Freeze requested */
 653   FF_ERROR              /* We have a problem */
 654 };
 655
 656 /* Values for identifying particular headers; printing characters are used, so
 657 they can be read in the spool file for those headers that are permanently
 658 marked. The lower case values don't get onto the spool; they are used only as
 659 return values from header_checkname(). */
 660
 661 #define htype_other         ' '   /* Unspecified header */
 662 #define htype_from          'F'
 663 #define htype_to            'T'
 664 #define htype_cc            'C'
 665 #define htype_bcc           'B'
 666 #define htype_id            'I'   /* for message-id */
 667 #define htype_reply_to      'R'
 668 #define htype_received      'P'   /* P for Postmark */
 669 #define htype_sender        'S'
 670 #define htype_old           '*'   /* Replaced header */
 671
 672 #define htype_date          'd'
 673 #define htype_return_path   'p'
 674 #define htype_delivery_date 'x'
 675 #define htype_envelope_to   'e'
 676 #define htype_subject       's'
 677
 678 /* These values are used only when adding new headers from an ACL; they too
 679 never get onto the spool. The type of the added header is set by reference
 680 to the header name, by calling header_checkname(). */
 681
 682 #define htype_add_top       'a'
 683 #define htype_add_rec       'r'
 684 #define htype_add_bot       'z'
 685 #define htype_add_rfc       'f'
 686
 687 /* Types of item in options lists. These are the bottom 8 bits of the "type"
 688 field, which is an int. The opt_void value is used for entries in tables that
 689 point to special types of value that are accessed only indirectly (e.g. the
 690 rewrite data that is built out of a string option.) We need to have some values
 691 visible in local_scan, so the following are declared there:
 692
 693   opt_stringptr, opt_int, opt_octint, opt_mkint, opt_Kint, opt_fixed, opt_time,
 694   opt_bool
 695
 696 To make sure we don't conflict, the local_scan.h values start from zero, and
 697 those defined here start from 32. The boolean ones must all be together so they
 698 can be easily tested as a group. That is the only use of opt_bool_last. */
 699
 700 enum { opt_bit = 32, opt_bool_verify, opt_bool_set, opt_expand_bool,
 701   opt_bool_last,
 702   opt_rewrite, opt_timelist, opt_uid, opt_gid, opt_uidlist, opt_gidlist,
 703   opt_expand_uid, opt_expand_gid, opt_func, opt_void };
 704
 705 /* There's a high-ish bit which is used to flag duplicate options, kept
 706 for compatibility, which shouldn't be output. Also used for hidden options
 707 that are automatically maintained from others. Another high bit is used to
 708 flag driver options that although private (so as to be settable only on some
 709 drivers), are stored in the instance block so as to be accessible from outside.
 710 A third high bit is set when an option is read, so as to be able to give an
 711 error if any option is set twice. Finally, there's a bit which is set when an
 712 option is set with the "hide" prefix, to prevent -bP from showing it to
 713 non-admin callers. The next byte up in the int is used to keep the bit number
 714 for booleans that are kept in one bit. */
 715
 716 #define opt_hidden  0x100      /* Private to Exim */
 717 #define opt_public  0x200      /* Stored in the main instance block */
 718 #define opt_set     0x400      /* Option is set */
 719 #define opt_secure  0x800      /* "hide" prefix used */
 720 #define opt_rep_con 0x1000     /* Can be appended to by a repeated line (condition) */
 721 #define opt_rep_str 0x2000     /* Can be appended to by a repeated line (string) */
 722 #define opt_mask    0x00ff
 723
 724 /* Verify types when directing and routing */
 725
 726 enum { v_none, v_sender, v_recipient, v_expn };
 727
 728 /* Option flags for verify_address() */
 729
 730 #define vopt_fake_sender          0x0001   /* for verify=sender=<address> */
 731 #define vopt_is_recipient         0x0002
 732 #define vopt_qualify              0x0004
 733 #define vopt_expn                 0x0008
 734 #define vopt_callout_fullpm       0x0010   /* full postmaster during callout */
 735 #define vopt_callout_random       0x0020   /* during callout */
 736 #define vopt_callout_no_cache     0x0040   /* disable callout cache */
 737 #define vopt_callout_recipsender  0x0080   /* use real sender to verify recip */
 738 #define vopt_callout_recippmaster 0x0100   /* use postmaster to verify recip */
 739 #define vopt_callout_hold         0x0200   /* lazy close connection */
 740 #define vopt_success_on_redirect  0x0400
 741
 742 /* Values for fields in callout cache records */
 743
 744 #define ccache_unknown         0       /* test hasn't been done */
 745 #define ccache_accept          1
 746 #define ccache_reject          2       /* All rejections except */
 747 #define ccache_reject_mfnull   3       /* MAIL FROM:<> was rejected */
 748
 749 /* Options for lookup functions */
 750
 751 #define lookup_querystyle      1    /* query-style lookup */
 752 #define lookup_absfile         2    /* requires absolute file name */
 753 #define lookup_absfilequery    4    /* query-style starts with file name */
 754
 755 /* Status values for host_item blocks. Require hstatus_unusable and
 756 hstatus_unusable_expired to be last. */
 757
 758 enum { hstatus_unknown, hstatus_usable, hstatus_unusable,
 759        hstatus_unusable_expired };
 760
 761 /* Reasons why a host is unusable (for clearer log messages) */
 762
 763 enum { hwhy_unknown, hwhy_retry, hwhy_insecure, hwhy_failed, hwhy_deferred,
 764        hwhy_ignored };
 765
 766 /* Domain lookup types for routers */
 767
 768 #define LK_DEFAULT      BIT(0)
 769 #define LK_BYNAME       BIT(1)
 770 #define LK_BYDNS        BIT(2)  /* those 3 should be mutually exclusive */
 771
 772 #define LK_IPV4_ONLY    BIT(3)
 773 #define LK_IPV4_PREFER  BIT(4)
 774
 775 /* Values for the self_code fields */
 776
 777 enum { self_freeze, self_defer, self_send, self_reroute, self_pass, self_fail };
 778
 779 /* Flags for rewrite rules */
 780
 781 #define rewrite_sender       0x0001
 782 #define rewrite_from         0x0002
 783 #define rewrite_to           0x0004
 784 #define rewrite_cc           0x0008
 785 #define rewrite_bcc          0x0010
 786 #define rewrite_replyto      0x0020
 787 #define rewrite_all_headers  0x003F  /* all header flags */
 788
 789 #define rewrite_envfrom      0x0040
 790 #define rewrite_envto        0x0080
 791 #define rewrite_all_envelope 0x00C0  /* all envelope flags */
 792
 793 #define rewrite_all      (rewrite_all_headers | rewrite_all_envelope)
 794
 795 #define rewrite_smtp         0x0100  /* rewrite at SMTP time */
 796 #define rewrite_smtp_sender  0x0200  /* SMTP sender rewrite (allows <>) */
 797 #define rewrite_qualify      0x0400  /* qualify if necessary */
 798 #define rewrite_repeat       0x0800  /* repeat rewrite rule */
 799
 800 #define rewrite_whole        0x1000  /* option bit for headers */
 801 #define rewrite_quit         0x2000  /* "no more" option */
 802
 803 /* Flags for log_write(); LOG_MAIN, LOG_PANIC, and LOG_REJECT are also in
 804 local_scan.h */
 805
 806 #define LOG_MAIN           1      /* Write to the main log */
 807 #define LOG_PANIC          2      /* Write to the panic log */
 808 #define LOG_PANIC_DIE      6      /* Write to the panic log and then die */
 809 #define LOG_REJECT        16      /* Write to the reject log, with headers */
 810 #define LOG_SENDER        32      /* Add raw sender to the message */
 811 #define LOG_RECIPIENTS    64      /* Add raw recipients to the message */
 812 #define LOG_CONFIG       128      /* Add "Exim configuration error" */
 813 #define LOG_CONFIG_FOR  (256+128) /* Add " for" instead of ":\n" */
 814 #define LOG_CONFIG_IN   (512+128) /* Add " in line x[ of file y]" */
 815
 816 /* and for debug_bits() logging action control: */
 817 #define DEBUG_FROM_CONFIG       0x0001
 818
 819 /* SMTP command identifiers for the smtp_connection_had field that records the
 820 most recent SMTP commands. Must be kept in step with the list of names in
 821 smtp_in.c that is used for creating the smtp_no_mail logging action. SCH_NONE
 822 is "empty". */
 823
 824 enum { SCH_NONE, SCH_AUTH, SCH_DATA, SCH_BDAT,
 825        SCH_EHLO, SCH_ETRN, SCH_EXPN, SCH_HELO,
 826        SCH_HELP, SCH_MAIL, SCH_NOOP, SCH_QUIT, SCH_RCPT, SCH_RSET, SCH_STARTTLS,
 827        SCH_VRFY };
 828
 829 /* Returns from host_find_by{name,dns}() */
 830
 831 enum {
 832   HOST_FIND_FAILED,     /* failed to find the host */
 833   HOST_FIND_AGAIN,      /* could not resolve at this time */
 834   HOST_FIND_SECURITY,   /* dnssec required but not acheived */
 835   HOST_FOUND,           /* found host */
 836   HOST_FOUND_LOCAL,     /* found, but MX points to local host */
 837   HOST_IGNORED          /* found but ignored - used internally only */
 838 };
 839
 840 /* Flags for host_find_bydns() */
 841
 842 #define HOST_FIND_BY_SRV          BIT(0)
 843 #define HOST_FIND_BY_MX           BIT(1)
 844 #define HOST_FIND_BY_A            BIT(2)
 845 #define HOST_FIND_BY_AAAA         BIT(3)
 846 #define HOST_FIND_QUALIFY_SINGLE  BIT(4)
 847 #define HOST_FIND_SEARCH_PARENTS  BIT(5)
 848 #define HOST_FIND_IPV4_FIRST      BIT(6)
 849 #define HOST_FIND_IPV4_ONLY       BIT(7)
 850
 851 /* Actions applied to specific messages. */
 852
 853 enum { MSG_DELIVER, MSG_FREEZE, MSG_REMOVE, MSG_THAW, MSG_ADD_RECIPIENT,
 854        MSG_MARK_ALL_DELIVERED, MSG_MARK_DELIVERED, MSG_EDIT_SENDER,
 855        MSG_SHOW_COPY, MSG_LOAD,
 856        /* These ones must be last: a test for >= MSG_SHOW_BODY is used
 857        to test for actions that list individual spool files. */
 858        MSG_SHOW_BODY, MSG_SHOW_HEADER, MSG_SHOW_LOG };
 859
 860 /* Returns from the spool_read_header() function */
 861
 862 enum {
 863   spool_read_OK,        /* success */
 864   spool_read_notopen,   /* open failed */
 865   spool_read_enverror,  /* error in the envelope */
 866   spool_read_hdrerror   /* error in the headers */
 867 };
 868
 869 /* Options for transport_write_message */
 870
 871 #define topt_add_return_path    0x001
 872 #define topt_add_delivery_date  0x002
 873 #define topt_add_envelope_to    0x004
 874 #define topt_use_crlf           0x008  /* Terminate lines with CRLF */
 875 #define topt_end_dot            0x010  /* Send terminating dot line */
 876 #define topt_no_headers         0x020  /* Omit headers */
 877 #define topt_no_body            0x040  /* Omit body */
 878 #define topt_escape_headers     0x080  /* Apply escape check to headers */
 879 #define topt_use_bdat           0x100  /* prepend chunks with RFC3030 BDAT header */
 880 #define topt_output_string      0x200  /* create string rather than write to fd */
 881 #define topt_continuation       0x400  /* do not reset buffer */
 882 #define topt_not_socket         0x800  /* cannot do socket-only syscalls */
 883
 884 /* Options for smtp_write_command */
 885
 886 enum {
 887   SCMD_FLUSH = 0,       /* write to kernel */
 888   SCMD_MORE,            /* write to kernel, but likely more soon */
 889   SCMD_BUFFER           /* stash in application cmd output buffer */
 890 };
 891
 892 /* Flags for recipient_block, used in DSN support */
 893
 894 #define rf_dsnlasthop           0x01  /* Do not propagate DSN any further */
 895 #define rf_notify_never         0x02  /* NOTIFY= settings */
 896 #define rf_notify_success       0x04
 897 #define rf_notify_failure       0x08
 898 #define rf_notify_delay         0x10
 899
 900 #define rf_dsnflags  (rf_notify_never | rf_notify_success | \
 901                       rf_notify_failure | rf_notify_delay)
 902
 903 /* DSN RET types */
 904
 905 #define dsn_ret_full            1
 906 #define dsn_ret_hdrs            2
 907
 908 #define dsn_support_unknown     0
 909 #define dsn_support_yes         1
 910 #define dsn_support_no          2
 911
 912
 913 /* Codes for the host_find_failed and host_all_ignored options. */
 914
 915 #define hff_freeze   0
 916 #define hff_defer    1
 917 #define hff_pass     2
 918 #define hff_decline  3
 919 #define hff_fail     4
 920 #define hff_ignore   5
 921
 922 /* Router information flags */
 923
 924 #define ri_yestransport    0x0001    /* Must have a transport */
 925 #define ri_notransport     0x0002    /* Must not have a transport */
 926
 927 /* Codes for match types in match_check_list; to any of them, MCL_NOEXPAND may
 928 be added */
 929
 930 #define MCL_NOEXPAND  16
 931
 932 enum { MCL_STRING, MCL_DOMAIN, MCL_HOST, MCL_ADDRESS, MCL_LOCALPART };
 933
 934 /* Codes for the places from which ACLs can be called. These are cunningly
 935 ordered to make it easy to implement tests for certain ACLs when processing
 936 "control" modifiers, by means of a maximum "where" value. Do not modify this
 937 order without checking carefully!
 938
 939 **** IMPORTANT***
 940 ****   Furthermore, remember to keep these in step with the tables
 941 ****   of names and response codes in globals.c.
 942 **** IMPORTANT ****
 943 */
 944
 945 enum { ACL_WHERE_RCPT,       /* Some controls are for RCPT only */
 946        ACL_WHERE_MAIL,       /* )                                           */
 947        ACL_WHERE_PREDATA,    /* ) There are several tests for "in message", */
 948        ACL_WHERE_MIME,       /* ) implemented by <= WHERE_NOTSMTP           */
 949        ACL_WHERE_DKIM,       /* )                                           */
 950        ACL_WHERE_DATA,       /* )                                           */
 951 #ifndef DISABLE_PRDR
 952        ACL_WHERE_PRDR,       /* )                                           */
 953 #endif
 954        ACL_WHERE_NOTSMTP,    /* )                                           */
 955
 956        ACL_WHERE_AUTH,       /* These remaining ones are not currently    */
 957        ACL_WHERE_CONNECT,    /* required to be in a special order so they */
 958        ACL_WHERE_ETRN,       /* are just alphabetical.                    */
 959        ACL_WHERE_EXPN,
 960        ACL_WHERE_HELO,
 961        ACL_WHERE_MAILAUTH,
 962        ACL_WHERE_NOTSMTP_START,
 963        ACL_WHERE_NOTQUIT,
 964        ACL_WHERE_QUIT,
 965        ACL_WHERE_STARTTLS,
 966        ACL_WHERE_VRFY,
 967
 968        ACL_WHERE_DELIVERY,
 969        ACL_WHERE_UNKNOWN     /* Currently used by a ${acl:name} expansion */
 970      };
 971
 972 #define ACL_BIT_RCPT            BIT(ACL_WHERE_RCPT)
 973 #define ACL_BIT_MAIL            BIT(ACL_WHERE_MAIL)
 974 #define ACL_BIT_PREDATA         BIT(ACL_WHERE_PREDATA)
 975 #define ACL_BIT_MIME            BIT(ACL_WHERE_MIME)
 976 #define ACL_BIT_DKIM            BIT(ACL_WHERE_DKIM)
 977 #define ACL_BIT_DATA            BIT(ACL_WHERE_DATA)
 978 #ifndef DISABLE_PRDR
 979 # define ACL_BIT_PRDR           BIT(ACL_WHERE_PRDR)
 980 #endif
 981 #define ACL_BIT_NOTSMTP         BIT(ACL_WHERE_NOTSMTP)
 982 #define ACL_BIT_AUTH            BIT(ACL_WHERE_AUTH)
 983 #define ACL_BIT_CONNECT         BIT(ACL_WHERE_CONNECT)
 984 #define ACL_BIT_ETRN            BIT(ACL_WHERE_ETRN)
 985 #define ACL_BIT_EXPN            BIT(ACL_WHERE_EXPN)
 986 #define ACL_BIT_HELO            BIT(ACL_WHERE_HELO)
 987 #define ACL_BIT_MAILAUTH        BIT(ACL_WHERE_MAILAUTH)
 988 #define ACL_BIT_NOTSMTP_START   BIT(ACL_WHERE_NOTSMTP_START)
 989 #define ACL_BIT_NOTQUIT         BIT(ACL_WHERE_NOTQUIT)
 990 #define ACL_BIT_QUIT            BIT(ACL_WHERE_QUIT)
 991 #define ACL_BIT_STARTTLS        BIT(ACL_WHERE_STARTTLS)
 992 #define ACL_BIT_VRFY            BIT(ACL_WHERE_VRFY)
 993 #define ACL_BIT_DELIVERY        BIT(ACL_WHERE_DELIVERY)
 994 #define ACL_BIT_UNKNOWN         BIT(ACL_WHERE_UNKNOWN)
 995
 996
 997 /* Situations for spool_write_header() */
 998
 999 enum { SW_RECEIVING, SW_DELIVERING, SW_MODIFYING };
1000
1001 /* MX fields for hosts not obtained from MX records are always negative.
1002 MX_NONE is the default case; lesser values are used when the hosts are
1003 randomized in batches. */
1004
1005 #define MX_NONE           (-1)
1006
1007 /* host_item.port defaults to PORT_NONE; the only current case where this
1008 is changed before running the transport is when an dnslookup router sets an
1009 explicit port number. */
1010
1011 #define PORT_NONE     (-1)
1012
1013 /* Flags for single-key search defaults */
1014
1015 #define SEARCH_STAR       0x01
1016 #define SEARCH_STARAT     0x02
1017
1018 /* Filter types */
1019
1020 enum { FILTER_UNSET, FILTER_FORWARD, FILTER_EXIM, FILTER_SIEVE };
1021
1022 /* Codes for ESMTP facilities offered by peer */
1023
1024 #define OPTION_TLS              BIT(0)
1025 #define OPTION_IGNQ             BIT(1)
1026 #define OPTION_PRDR             BIT(2)
1027 #define OPTION_UTF8             BIT(3)
1028 #define OPTION_DSN              BIT(4)
1029 #define OPTION_PIPE             BIT(5)
1030 #define OPTION_SIZE             BIT(6)
1031 #define OPTION_CHUNKING         BIT(7)
1032 #define OPTION_EARLY_PIPE       BIT(8)
1033
1034 /* Argument for *_getc */
1035
1036 #define GETC_BUFFER_UNLIMITED   UINT_MAX
1037
1038 /* UTF-8 chars for line-drawing */
1039
1040 #define UTF8_DOWN_RIGHT         "\xE2\x94\x8c"
1041 #define UTF8_HORIZ              "\xE2\x94\x80"
1042 #define UTF8_VERT_RIGHT         "\xE2\x94\x9C"
1043 #define UTF8_UP_RIGHT           "\xE2\x94\x94"
1044 #define UTF8_VERT_2DASH         "\xE2\x95\x8E"
1045
1046
1047 /* Options on tls_close */
1048 #define TLS_NO_SHUTDOWN         0
1049 #define TLS_SHUTDOWN_NOWAIT     1
1050 #define TLS_SHUTDOWN_WAIT       2
1051
1052
1053 #ifdef COMPILE_UTILITY
1054 # define ALARM(seconds) alarm(seconds);
1055 # define ALARM_CLR(seconds) alarm(seconds);
1056 #else
1057 /* For debugging of odd alarm-signal problems, stash caller info while the
1058 alarm is active.  Clear it down on cancelling the alarm so we can tell there
1059 should not be one active. */
1060
1061 # define ALARM(seconds) \
1062     debug_selector & D_any \
1063     ? (sigalarm_setter = CUS __FUNCTION__, alarm(seconds)) : alarm(seconds);
1064 # define ALARM_CLR(seconds) \
1065     debug_selector & D_any \
1066     ? (sigalarm_setter = NULL, alarm(seconds)) : alarm(seconds);
1067 #endif
1068
1069 #define AUTHS_REGEX US"\\n250[\\s\\-]AUTH\\s+([\\-\\w \\t]+)(?:\\n|$)"
1070
1071 #define EARLY_PIPE_FEATURE_NAME "X_PIPE_CONNECT"
1072 #define EARLY_PIPE_FEATURE_LEN  14
1073
1074
1075 /* Flags for auth_client_item() */
1076
1077 #define AUTH_ITEM_FIRST BIT(0)
1078 #define AUTH_ITEM_LAST  BIT(1)
1079 #define AUTH_ITEM_IGN64 BIT(2)
1080
1081
1082 /* Flags for tls_{in,out}_resumption */
1083 #define RESUME_SUPPORTED        BIT(0)
1084 #define RESUME_CLIENT_REQUESTED BIT(1)
1085 #define RESUME_CLIENT_SUGGESTED BIT(2)
1086 #define RESUME_SERVER_TICKET    BIT(3)
1087 #define RESUME_USED             BIT(4)
1088
1089 #define RESUME_DECODE_STRING \
1090           US"not requested or offered : 0x02 :client requested, no server ticket" \
1091     ": 0x04 : 0x05 : 0x06 :client offered session, no server action" \
1092     ": 0x08 :no client request: 0x0A :client requested new ticket, server provided" \
1093     ": 0x0C :client offered session, not used: 0x0E :client offered session, server only provided new ticket" \
1094     ": 0x10 :session resumed unasked: 0x12 :session resumed unasked" \
1095     ": 0x14 : 0x15 : 0x16 :session resumed" \
1096     ": 0x18 :session resumed unasked: 0x1A :session resumed unasked" \
1097     ": 0x1C :session resumed: 0x1E :session resumed, also new ticket"
1098
1099 /* End of macros.h */