* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2012 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
#define mac_string(s) # s
#define mac_expanded_string(s) mac_string(s)
+/* Number of elements of an array */
+#define nelem(arr) (sizeof(arr) / sizeof(*arr))
+
+/* Maximum of two items */
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
/* When running in the test harness, the load average is fudged. */
#define OS_GETLOADAVG() \
- (running_in_test_harness? (test_harness_load_avg += 10) : os_getloadavg())
+ (f.running_in_test_harness? (test_harness_load_avg += 10) : os_getloadavg())
-/* The address_item structure has a word full of 1-bit flags. These macros
+/* The address_item structure has a struct full of 1-bit flags. These macros
manipulate them. */
-#define setflag(addr,flag) addr->flags |= (flag)
-#define clearflag(addr,flag) addr->flags &= ~(flag)
-
-#define testflag(addr,flag) ((addr->flags & (flag)) != 0)
-#define testflagsall(addr,flag) ((addr->flags & (flag)) == (flag))
+#define setflag(addr, flagname) addr->flags.flagname = TRUE
+#define clearflag(addr, flagname) addr->flags.flagname = FALSE
-#define copyflag(addrnew,addrold,flag) \
- addrnew->flags = (addrnew->flags & ~(flag)) | (addrold->flags & (flag))
+#define testflag(addr, flagname) (addr->flags.flagname)
-#define orflag(addrnew,addrold,flag) \
- addrnew->flags |= addrold->flags & (flag)
+#define copyflag(addrnew, addrold, flagname) \
+ addrnew->flags.flagname = addrold->flags.flagname
/* For almost all calls to convert things to printing characters, we want to
a no-op once an SSL session is in progress. */
#ifdef SUPPORT_TLS
-#define mac_smtp_fflush() if (tls_in.active < 0) fflush(smtp_out);
+#define mac_smtp_fflush() if (tls_in.active.sock < 0) fflush(smtp_out);
#else
#define mac_smtp_fflush() fflush(smtp_out);
#endif
/* Debugging control */
-#define DEBUG(x) if ((debug_selector & (x)) != 0)
-#define HDEBUG(x) if (host_checking || (debug_selector & (x)) != 0)
+#define DEBUG(x) if (debug_selector & (x))
+#define HDEBUG(x) if (host_checking || (debug_selector & (x)))
+
+#define PTR_CHK(ptr) \
+do { \
+if ((void *)ptr > (void *)store_get(0)) \
+ debug_printf("BUG: ptr '%s' beyond arena at %s:%d\n", \
+ mac_expanded_string(ptr), __FUNCTION__, __LINE__); \
+} while(0)
/* The default From: text for DSNs */
as long as the maximum path length. */
#if defined PATH_MAX && PATH_MAX > 16384
-#define BIG_BUFFER_SIZE PATH_MAX
+# define BIG_BUFFER_SIZE PATH_MAX
#elif defined MAXPATHLEN && MAXPATHLEN > 16384
-#define BIG_BUFFER_SIZE MAXPATHLEN
+# define BIG_BUFFER_SIZE MAXPATHLEN
#else
-#define BIG_BUFFER_SIZE 16384
+# define BIG_BUFFER_SIZE 16384
#endif
+/* header size of pipe content
+ currently: char id, char subid, char[5] length */
+#define PIPE_HEADER_SIZE 7
+
/* This limits the length of data returned by local_scan(). Because it is
written on the spool, it gets read into big_buffer. */
#define WAIT_NAME_MAX 50
+/* Wait this long before determining that a Proxy Protocol configured
+host isn't speaking the protocol, and so is disallowed. Can be moved to
+runtime configuration if per site settings become needed. */
+#ifdef SUPPORT_PROXY
+#define PROXY_NEGOTIATION_TIMEOUT_SEC 3
+#define PROXY_NEGOTIATION_TIMEOUT_USEC 0
+#endif
+
/* Fixed option values for all PCRE functions */
#define PCRE_COPT 0 /* compile */
/* For identifying types of driver */
enum {
- DTYPE_NONE,
- DTYPE_ROUTER,
- DTYPE_TRANSPORT
+ EXIM_DTYPE_NONE,
+ EXIM_DTYPE_ROUTER,
+ EXIM_DTYPE_TRANSPORT
};
/* Error numbers for generating error messages when reading a message on the
ERRMESS_TOOMANYRECIP, /* Too many recipients */
ERRMESS_LOCAL_SCAN, /* Rejected by local scan */
ERRMESS_LOCAL_ACL /* Rejected by non-SMTP ACL */
+#ifdef EXPERIMENTAL_DMARC
+ ,ERRMESS_DMARC_FORENSIC /* DMARC Forensic Report */
+#endif
};
/* Error handling styles - set by option, and apply only when receiving
#define END_NOTENDED 3 /* Message reading not yet ended */
#define END_SIZE 4 /* Reading ended because message too big */
#define END_WERROR 5 /* Write error while reading the message */
+#define END_PROTOCOL 6 /* Protocol error in CHUNKING sequence */
+
+/* result codes for bdat_getc() (which can also return EOF) */
+
+#define EOD (-2)
+#define ERR (-3)
+
+
+/* Bit masks for debug and log selectors */
+
+/* Assume words are 32 bits wide. Tiny waste of space on 64 bit
+platforms, but this ensures bit vectors always work the same way. */
+#define BITWORDSIZE 32
+
+/* This macro is for single-word bit vectors: the debug selector,
+and the first word of the log selector. */
+#define BIT(n) (1 << (n))
+
+/* And these are for multi-word vectors. */
+#define BITWORD(n) ( (n) / BITWORDSIZE)
+#define BITMASK(n) (1 << (n) % BITWORDSIZE)
-/* Options bits for debugging; D_v and D_local_scan are also in local_scan.h */
-
-#define D_v 0x00000001
-#define D_local_scan 0x00000002
-
-#define D_acl 0x00000004
-#define D_auth 0x00000008
-#define D_deliver 0x00000010
-#define D_dns 0x00000020
-#define D_dnsbl 0x00000040
-#define D_exec 0x00000080
-#define D_expand 0x00000100
-#define D_filter 0x00000200
-#define D_hints_lookup 0x00000400
-#define D_host_lookup 0x00000800
-#define D_ident 0x00001000
-#define D_interface 0x00002000
-#define D_lists 0x00004000
-#define D_load 0x00008000
-#define D_lookup 0x00010000
-#define D_memory 0x00020000
-#define D_pid 0x00040000
-#define D_process_info 0x00080000
-#define D_queue_run 0x00100000
-#define D_receive 0x00200000
-#define D_resolver 0x00400000
-#define D_retry 0x00800000
-#define D_rewrite 0x01000000
-#define D_route 0x02000000
-#define D_timestamp 0x04000000
-#define D_tls 0x08000000
-#define D_transport 0x10000000
-#define D_uid 0x20000000
-#define D_verify 0x40000000
-
-/* The D_all value must always have all bits set, as it is recognized specially
-by the function that decodes debug and log selectors. This is to enable it to
-set all the bits in a multi-word selector. Debug doesn't use this yet, but we
-are getting close. In fact, we want to omit "memory" for -d+all, but can't
-handle this here. It is fudged externally. */
+#define BIT_CLEAR(s,z,n) ((s)[BITWORD(n)] &= ~BITMASK(n))
+#define BIT_SET(s,z,n) ((s)[BITWORD(n)] |= BITMASK(n))
+#define BIT_TEST(s,z,n) (((s)[BITWORD(n)] & BITMASK(n)) != 0)
+
+/* Used in globals.c for initializing bit_table structures. T will be either
+D or L corresponding to the debug and log selector bits declared below. */
+
+#define BIT_TABLE(T,name) { US #name, T##i_##name }
+
+/* IOTA allows us to keep an implicit sequential count, like a simple enum,
+but we can have sequentially numbered identifiers which are not declared
+sequentially. We use this for more compact declarations of bit indexes and
+masks, alternating between sequential bit index and corresponding mask. */
+
+#define IOTA(iota) (__LINE__ - iota)
+#define IOTA_INIT(zero) (__LINE__ - zero + 1)
+
+/* Options bits for debugging. DEBUG_BIT() declares both a bit index and the
+corresponding mask. Di_all is a special value recognized by decode_bits().
+
+Exim's code assumes in a number of places that the debug_selector is one
+word, and this is exposed in the local_scan ABI. The D_v and D_local_scan bit
+masks are part of the local_scan API so are #defined in local_scan.h */
+
+#define DEBUG_BIT(name) Di_##name = IOTA(Di_iota), D_##name = BIT(Di_##name)
+
+enum {
+ Di_all = -1,
+ Di_v = 0,
+ Di_local_scan = 1,
+
+ Di_iota = IOTA_INIT(2),
+ DEBUG_BIT(acl),
+ DEBUG_BIT(auth),
+ DEBUG_BIT(deliver),
+ DEBUG_BIT(dns),
+ DEBUG_BIT(dnsbl),
+ DEBUG_BIT(exec),
+ DEBUG_BIT(expand),
+ DEBUG_BIT(filter),
+ DEBUG_BIT(hints_lookup),
+ DEBUG_BIT(host_lookup),
+ DEBUG_BIT(ident),
+ DEBUG_BIT(interface),
+ DEBUG_BIT(lists),
+ DEBUG_BIT(load),
+ DEBUG_BIT(lookup),
+ DEBUG_BIT(memory),
+ DEBUG_BIT(pid),
+ DEBUG_BIT(process_info),
+ DEBUG_BIT(queue_run),
+ DEBUG_BIT(receive),
+ DEBUG_BIT(resolver),
+ DEBUG_BIT(retry),
+ DEBUG_BIT(rewrite),
+ DEBUG_BIT(route),
+ DEBUG_BIT(timestamp),
+ DEBUG_BIT(tls),
+ DEBUG_BIT(transport),
+ DEBUG_BIT(uid),
+ DEBUG_BIT(verify),
+};
+
+/* Multi-bit debug masks */
#define D_all 0xffffffff
D_timestamp | \
D_resolver))
-/* Options bits for logging. Those that will end up in log_write_selector have
-values < 0x80000000. They can be used in calls to log_write(). The others have
-values > 0x80000000 and are put into log_extra_selector (without the top bit).
-These are only ever tested independently. "All" is a magic value that is used
-only in the name table to set all options in both bit maps. */
-
-/* The L_all value must always have all bits set, as it is recognized specially
-by the function that decodes debug and log selectors. This is to enable it to
-set all the bits in a multi-word selector. */
-
-#define L_all 0xffffffff
-
-#define L_address_rewrite 0x00000001
-#define L_all_parents 0x00000002
-#define L_connection_reject 0x00000004
-#define L_delay_delivery 0x00000008
-#define L_dnslist_defer 0x00000010
-#define L_etrn 0x00000020
-#define L_host_lookup_failed 0x00000040
-#define L_lost_incoming_connection 0x00000080
-#define L_queue_run 0x00000100
-#define L_retry_defer 0x00000200
-#define L_size_reject 0x00000400
-#define L_skip_delivery 0x00000800
-#define L_smtp_connection 0x00001000
-#define L_smtp_incomplete_transaction 0x00002000
-#define L_smtp_protocol_error 0x00004000
-#define L_smtp_syntax_error 0x00008000
-
-#define LX_acl_warn_skipped 0x80000001
-#define LX_arguments 0x80000002
-#define LX_deliver_time 0x80000004
-#define LX_delivery_size 0x80000008
-#define LX_ident_timeout 0x80000010
-#define LX_incoming_interface 0x80000020
-#define LX_incoming_port 0x80000040
-#define LX_outgoing_port 0x80000080
-#define LX_pid 0x80000100
-#define LX_queue_time 0x80000200
-#define LX_queue_time_overall 0x80000400
-#define LX_received_sender 0x80000800
-#define LX_received_recipients 0x80001000
-#define LX_rejected_header 0x80002000
-#define LX_return_path_on_delivery 0x80004000
-#define LX_sender_on_delivery 0x80008000
-#define LX_sender_verify_fail 0x80010000
-#define LX_smtp_confirmation 0x80020000
-#define LX_smtp_no_mail 0x80040000
-#define LX_subject 0x80080000
-#define LX_tls_certificate_verified 0x80100000
-#define LX_tls_cipher 0x80200000
-#define LX_tls_peerdn 0x80400000
-#define LX_tls_sni 0x80800000
-#define LX_unknown_in_list 0x81000000
-
-#define L_default (L_connection_reject | \
- L_delay_delivery | \
- L_dnslist_defer | \
- L_etrn | \
- L_host_lookup_failed | \
- L_lost_incoming_connection | \
- L_queue_run | \
- L_retry_defer | \
- L_size_reject | \
- L_skip_delivery)
-
-#define LX_default ((LX_acl_warn_skipped | \
- LX_rejected_header | \
- LX_sender_verify_fail | \
- LX_tls_cipher) & 0x7fffffff)
+/* Options bits for logging. Those that have values < BITWORDSIZE can be used
+in calls to log_write(). The others are put into later words in log_selector
+and are only ever tested independently, so they do not need bit mask
+declarations. The Li_all value is recognized specially by decode_bits(). */
+
+#define LOG_BIT(name) Li_##name = IOTA(Li_iota), L_##name = BIT(Li_##name)
+
+enum {
+ Li_all = -1,
+
+ Li_iota = IOTA_INIT(0),
+ LOG_BIT(address_rewrite),
+ LOG_BIT(all_parents),
+ LOG_BIT(connection_reject),
+ LOG_BIT(delay_delivery),
+ LOG_BIT(dnslist_defer),
+ LOG_BIT(etrn),
+ LOG_BIT(host_lookup_failed),
+ LOG_BIT(lost_incoming_connection),
+ LOG_BIT(queue_run),
+ LOG_BIT(retry_defer),
+ LOG_BIT(size_reject),
+ LOG_BIT(skip_delivery),
+ LOG_BIT(smtp_connection),
+ LOG_BIT(smtp_incomplete_transaction),
+ LOG_BIT(smtp_protocol_error),
+ LOG_BIT(smtp_syntax_error),
+
+ Li_8bitmime = BITWORDSIZE,
+ Li_acl_warn_skipped,
+ Li_arguments,
+ Li_deliver_time,
+ Li_delivery_size,
+ Li_dkim,
+ Li_dkim_verbose,
+ Li_dnssec,
+ Li_ident_timeout,
+ Li_incoming_interface,
+ Li_incoming_port,
+ Li_millisec,
+ Li_outgoing_interface,
+ Li_outgoing_port,
+ Li_pid,
+ Li_pipelining,
+ Li_proxy,
+ Li_queue_time,
+ Li_queue_time_overall,
+ Li_receive_time,
+ Li_received_sender,
+ Li_received_recipients,
+ Li_rejected_header,
+ Li_return_path_on_delivery,
+ Li_sender_on_delivery,
+ Li_sender_verify_fail,
+ Li_smtp_confirmation,
+ Li_smtp_mailauth,
+ Li_smtp_no_mail,
+ Li_subject,
+ Li_tls_certificate_verified,
+ Li_tls_cipher,
+ Li_tls_peerdn,
+ Li_tls_sni,
+ Li_unknown_in_list,
+
+ log_selector_size = BITWORD(Li_unknown_in_list) + 1
+};
+
+#define LOGGING(opt) BIT_TEST(log_selector, log_selector_size, Li_##opt)
/* Private error numbers for delivery failures, set negative so as not
-to conflict with system errno values. */
+to conflict with system errno values. Take care to maintain the string
+table exim_errstrings[] in log.c */
#define ERRNO_UNKNOWNERROR (-1)
#define ERRNO_USERSLASH (-2)
#define ERRNO_UIDFAIL (-29) /* Failed to get uid */
#define ERRNO_BADTRANSPORT (-30) /* Unset or non-existent transport */
#define ERRNO_MBXLENGTH (-31) /* MBX length mismatch */
-#define ERRNO_UNKNOWNHOST (-32) /* Lookup failed in smtp transport */
+#define ERRNO_UNKNOWNHOST (-32) /* Lookup failed routing or in smtp tpt */
#define ERRNO_FORMATUNKNOWN (-33) /* Can't match format in appendfile */
#define ERRNO_BADCREATE (-34) /* Creation outside home in appendfile */
#define ERRNO_LISTDEFER (-35) /* Can't check a list; lookup defer */
#define ERRNO_RCPT4XX (-44) /* RCPT gave 4xx error */
#define ERRNO_MAIL4XX (-45) /* MAIL gave 4xx error */
#define ERRNO_DATA4XX (-46) /* DATA gave 4xx error */
+#define ERRNO_PROXYFAIL (-47) /* Negotiation failed for proxy configured host */
+#define ERRNO_AUTHPROB (-48) /* Authenticator "other" failure */
+
+#ifdef SUPPORT_I18N
+# define ERRNO_UTF8_FWD (-49) /* target not supporting SMTPUTF8 */
+#endif
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_REQUIRETLS)
+# define ERRNO_REQUIRETLS (-50) /* REQUIRETLS session not started */
+#endif
/* These must be last, so all retry deferments can easily be identified */
#define ERRNO_HRETRY (-53) /* Not time for any remote host */
#define ERRNO_LOCAL_ONLY (-54) /* Local-only delivery */
#define ERRNO_QUEUE_DOMAIN (-55) /* Domain in queue_domains */
+#define ERRNO_TRETRY (-56) /* Transport concurrency limit */
+
+
/* Special actions to take after failure or deferment. */
enum { opt_bit = 32, opt_bool_verify, opt_bool_set, opt_expand_bool,
opt_bool_last,
opt_rewrite, opt_timelist, opt_uid, opt_gid, opt_uidlist, opt_gidlist,
- opt_expand_uid, opt_expand_gid, opt_void };
+ opt_expand_uid, opt_expand_gid, opt_func, opt_void };
/* There's a high-ish bit which is used to flag duplicate options, kept
for compatibility, which shouldn't be output. Also used for hidden options
#define opt_public 0x200 /* Stored in the main instance block */
#define opt_set 0x400 /* Option is set */
#define opt_secure 0x800 /* "hide" prefix used */
-#define opt_mask 0x0ff
+#define opt_rep_con 0x1000 /* Can be appended to by a repeated line (condition) */
+#define opt_rep_str 0x2000 /* Can be appended to by a repeated line (string) */
+#define opt_mask 0x00ff
/* Verify types when directing and routing */
#define vopt_callout_no_cache 0x0040 /* disable callout cache */
#define vopt_callout_recipsender 0x0080 /* use real sender to verify recip */
#define vopt_callout_recippmaster 0x0100 /* use postmaster to verify recip */
-#define vopt_success_on_redirect 0x0200
+#define vopt_callout_hold 0x0200 /* lazy close connection */
+#define vopt_success_on_redirect 0x0400
/* Values for fields in callout cache records */
/* Reasons why a host is unusable (for clearer log messages) */
-enum { hwhy_unknown, hwhy_retry, hwhy_failed, hwhy_deferred, hwhy_ignored };
+enum { hwhy_unknown, hwhy_retry, hwhy_insecure, hwhy_failed, hwhy_deferred,
+ hwhy_ignored };
/* Domain lookup types for routers */
-enum { lk_default, lk_byname, lk_bydns };
+#define LK_DEFAULT BIT(0)
+#define LK_BYNAME BIT(1)
+#define LK_BYDNS BIT(2) /* those 3 should be mutually exclusive */
+
+#define LK_IPV4_ONLY BIT(3)
+#define LK_IPV4_PREFER BIT(4)
/* Values for the self_code fields */
smtp_in.c that is used for creating the smtp_no_mail logging action. SCH_NONE
is "empty". */
-enum { SCH_NONE, SCH_AUTH, SCH_DATA, SCH_EHLO, SCH_ETRN, SCH_EXPN, SCH_HELO,
+enum { SCH_NONE, SCH_AUTH, SCH_DATA, SCH_BDAT,
+ SCH_EHLO, SCH_ETRN, SCH_EXPN, SCH_HELO,
SCH_HELP, SCH_MAIL, SCH_NOOP, SCH_QUIT, SCH_RCPT, SCH_RSET, SCH_STARTTLS,
SCH_VRFY };
enum {
HOST_FIND_FAILED, /* failed to find the host */
HOST_FIND_AGAIN, /* could not resolve at this time */
+ HOST_FIND_SECURITY, /* dnssec required but not acheived */
HOST_FOUND, /* found host */
HOST_FOUND_LOCAL, /* found, but MX points to local host */
HOST_IGNORED /* found but ignored - used internally only */
/* Flags for host_find_bydns() */
-#define HOST_FIND_BY_SRV 0x0001
-#define HOST_FIND_BY_MX 0x0002
-#define HOST_FIND_BY_A 0x0004
-#define HOST_FIND_QUALIFY_SINGLE 0x0008
-#define HOST_FIND_SEARCH_PARENTS 0x0010
+#define HOST_FIND_BY_SRV BIT(0)
+#define HOST_FIND_BY_MX BIT(1)
+#define HOST_FIND_BY_A BIT(2)
+#define HOST_FIND_BY_AAAA BIT(3)
+#define HOST_FIND_QUALIFY_SINGLE BIT(4)
+#define HOST_FIND_SEARCH_PARENTS BIT(5)
+#define HOST_FIND_IPV4_FIRST BIT(6)
+#define HOST_FIND_IPV4_ONLY BIT(7)
/* Actions applied to specific messages. */
#define topt_add_delivery_date 0x002
#define topt_add_envelope_to 0x004
#define topt_use_crlf 0x008 /* Terminate lines with CRLF */
-#define topt_end_dot 0x010 /* Send terminting dot line */
+#define topt_end_dot 0x010 /* Send terminating dot line */
#define topt_no_headers 0x020 /* Omit headers */
#define topt_no_body 0x040 /* Omit body */
#define topt_escape_headers 0x080 /* Apply escape check to headers */
+#define topt_use_bdat 0x100 /* prepend chunks with RFC3030 BDAT header */
+#define topt_output_string 0x200 /* create string rather than write to fd */
+#define topt_continuation 0x400 /* do not reset buffer */
+#define topt_not_socket 0x800 /* cannot do socket-only syscalls */
+
+/* Options for smtp_write_command */
+
+enum {
+ SCMD_FLUSH = 0, /* write to kernel */
+ SCMD_MORE, /* write to kernel, but likely more soon */
+ SCMD_BUFFER /* stash in application cmd output buffer */
+};
+
+/* Flags for recipient_block, used in DSN support */
+
+#define rf_dsnlasthop 0x01 /* Do not propagate DSN any further */
+#define rf_notify_never 0x02 /* NOTIFY= settings */
+#define rf_notify_success 0x04
+#define rf_notify_failure 0x08
+#define rf_notify_delay 0x10
+
+#define rf_dsnflags (rf_notify_never | rf_notify_success | \
+ rf_notify_failure | rf_notify_delay)
+
+/* DSN RET types */
+
+#define dsn_ret_full 1
+#define dsn_ret_hdrs 2
+
+#define dsn_support_unknown 0
+#define dsn_support_yes 1
+#define dsn_support_no 2
+
/* Codes for the host_find_failed and host_all_ignored options. */
ACL_WHERE_MIME, /* ) implemented by <= WHERE_NOTSMTP */
ACL_WHERE_DKIM, /* ) */
ACL_WHERE_DATA, /* ) */
+#ifndef DISABLE_PRDR
+ ACL_WHERE_PRDR, /* ) */
+#endif
ACL_WHERE_NOTSMTP, /* ) */
ACL_WHERE_AUTH, /* These remaining ones are not currently */
ACL_WHERE_STARTTLS,
ACL_WHERE_VRFY,
- ACL_WHERE_EXPANSION /* Currently used by a ${acl:name} expansion */
+ ACL_WHERE_DELIVERY,
+ ACL_WHERE_UNKNOWN /* Currently used by a ${acl:name} expansion */
};
+#define ACL_BIT_RCPT BIT(ACL_WHERE_RCPT)
+#define ACL_BIT_MAIL BIT(ACL_WHERE_MAIL)
+#define ACL_BIT_PREDATA BIT(ACL_WHERE_PREDATA)
+#define ACL_BIT_MIME BIT(ACL_WHERE_MIME)
+#define ACL_BIT_DKIM BIT(ACL_WHERE_DKIM)
+#define ACL_BIT_DATA BIT(ACL_WHERE_DATA)
+#ifndef DISABLE_PRDR
+# define ACL_BIT_PRDR BIT(ACL_WHERE_PRDR)
+#endif
+#define ACL_BIT_NOTSMTP BIT(ACL_WHERE_NOTSMTP)
+#define ACL_BIT_AUTH BIT(ACL_WHERE_AUTH)
+#define ACL_BIT_CONNECT BIT(ACL_WHERE_CONNECT)
+#define ACL_BIT_ETRN BIT(ACL_WHERE_ETRN)
+#define ACL_BIT_EXPN BIT(ACL_WHERE_EXPN)
+#define ACL_BIT_HELO BIT(ACL_WHERE_HELO)
+#define ACL_BIT_MAILAUTH BIT(ACL_WHERE_MAILAUTH)
+#define ACL_BIT_NOTSMTP_START BIT(ACL_WHERE_NOTSMTP_START)
+#define ACL_BIT_NOTQUIT BIT(ACL_WHERE_NOTQUIT)
+#define ACL_BIT_QUIT BIT(ACL_WHERE_QUIT)
+#define ACL_BIT_STARTTLS BIT(ACL_WHERE_STARTTLS)
+#define ACL_BIT_VRFY BIT(ACL_WHERE_VRFY)
+#define ACL_BIT_DELIVERY BIT(ACL_WHERE_DELIVERY)
+#define ACL_BIT_UNKNOWN BIT(ACL_WHERE_UNKNOWN)
+
+
/* Situations for spool_write_header() */
enum { SW_RECEIVING, SW_DELIVERING, SW_MODIFYING };
enum { FILTER_UNSET, FILTER_FORWARD, FILTER_EXIM, FILTER_SIEVE };
+/* Codes for ESMTP facilities offered by peer */
+
+#define OPTION_TLS BIT(0)
+#define OPTION_IGNQ BIT(1)
+#define OPTION_PRDR BIT(2)
+#define OPTION_UTF8 BIT(3)
+#define OPTION_DSN BIT(4)
+#define OPTION_PIPE BIT(5)
+#define OPTION_SIZE BIT(6)
+#define OPTION_CHUNKING BIT(7)
+#define OPTION_REQUIRETLS BIT(8)
+
+/* Codes for tls_requiretls requests (usually by sender) */
+
+#define REQUIRETLS_MSG BIT(0) /* REQUIRETLS onward use */
+
+/* Argument for *_getc */
+
+#define GETC_BUFFER_UNLIMITED UINT_MAX
+
+/* UTF-8 chars for line-drawing */
+
+#define UTF8_DOWN_RIGHT "\xE2\x94\x8c"
+#define UTF8_HORIZ "\xE2\x94\x80"
+#define UTF8_VERT_RIGHT "\xE2\x94\x9C"
+#define UTF8_UP_RIGHT "\xE2\x94\x94"
+#define UTF8_VERT_2DASH "\xE2\x95\x8E"
+
+
+/* Options on tls_close */
+#define TLS_NO_SHUTDOWN 0
+#define TLS_SHUTDOWN_NOWAIT 1
+#define TLS_SHUTDOWN_WAIT 2
+
+
/* End of macros.h */
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