* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* 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 setflag(addr, flagname) addr->flags.flagname = TRUE
+#define clearflag(addr, flagname) addr->flags.flagname = FALSE
-#define testflag(addr,flag) ((addr->flags & (flag)) != 0)
-#define testflagsall(addr,flag) ((addr->flags & (flag)) == (flag))
+#define testflag(addr, flagname) (addr->flags.flagname)
-#define copyflag(addrnew,addrold,flag) \
- addrnew->flags = (addrnew->flags & ~(flag)) | (addrold->flags & (flag))
-
-#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
/* When built with TLS support, the act of flushing SMTP output becomes
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);
+#ifndef DISABLE_TLS
+#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 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)
+#define DEBUG(x) if (debug_selector & (x))
+#define HDEBUG(x) if (host_checking || (debug_selector & (x)))
/* The default From: text for DSNs */
verifying. This has to be explicit because it is referenced in more than one
source module. */
-#define ADDRESS_EXPANSIONS_COUNT 18
+#define ADDRESS_EXPANSIONS_COUNT 19
/* The maximum permitted number of command-line (-D) macro definitions. We
need a limit only to make it easier to generate argument vectors for re-exec
/* The size of the buffer holding the processing information string. */
-#define PROCESS_INFO_SIZE 256
+#define PROCESS_INFO_SIZE 384
/* The size of buffer to get for constructing log entries. Make it big
enough to hold all the headers from a normal kind of message. */
into big_buffer_size and in some circumstances increased. It should be at least
as long as the maximum path length. */
-#if defined PATH_MAX && PATH_MAX > 16384
+#ifdef AUTH_HEIMDAL_GSSAPI
+ /* RFC 4121 section 5.2, SHOULD support 64K input buffers */
+# define __BIG_BUFFER_SIZE 65536
+#else
+# define __BIG_BUFFER_SIZE 16384
+#endif
+
+#if defined PATH_MAX && PATH_MAX > __BIG_BUFFER_SIZE
# define BIG_BUFFER_SIZE PATH_MAX
-#elif defined MAXPATHLEN && MAXPATHLEN > 16384
+#elif defined MAXPATHLEN && MAXPATHLEN > __BIG_BUFFER_SIZE
# define BIG_BUFFER_SIZE MAXPATHLEN
#else
-# define BIG_BUFFER_SIZE 16384
+# define BIG_BUFFER_SIZE __BIG_BUFFER_SIZE
#endif
-/* header size of pipe content
+/* header size of pipe content
currently: char id, char subid, char[5] length */
#define PIPE_HEADER_SIZE 7
/* 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 EXPERIMENTAL_PROXY
+#ifdef SUPPORT_PROXY
#define PROXY_NEGOTIATION_TIMEOUT_SEC 3
#define PROXY_NEGOTIATION_TIMEOUT_USEC 0
#endif
/* 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
+#ifdef SUPPORT_DMARC
,ERRMESS_DMARC_FORENSIC /* DMARC Forensic Report */
#endif
};
OK, FAIL, DEFER, ERROR, and FAIL_FORCED are also declared in local_scan.h for
use in the local_scan() function and in ${dlfunc loaded functions. Do not
-change them unilaterally. */
+change them unilaterally.
+
+Use rc_names[] for debug strings. */
#define OK 0 /* Successful match */
#define DEFER 1 /* Defer - some problem */
#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 */
/* This macro is for single-word bit vectors: the debug selector,
and the first word of the log selector. */
-#define BIT(n) (1 << (n))
+#define BIT(n) (1UL << (n))
/* And these are for multi-word vectors. */
-#define BITWORD(n) ( (n) / BITWORDSIZE)
-#define BITMASK(n) (1 << (n) % BITWORDSIZE)
+#define BITWORD(n) ( (n) / BITWORDSIZE)
+#define BITMASK(n) (1U << (n) % BITWORDSIZE)
#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 correspondong to the debug and log selector bits declared below. */
+D or L corresponding to the debug and log selector bits declared below. */
#define BIT_TABLE(T,name) { US #name, T##i_##name }
/* 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().
+These must match the debug_options table in globals.c .
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)
+#define DEBUG_BIT(name) Di_##name = IOTA(Di_iota), D_##name = (int)BIT(Di_##name)
enum {
Di_all = -1,
Di_local_scan = 1,
Di_iota = IOTA_INIT(2),
- DEBUG_BIT(acl),
+ DEBUG_BIT(acl), /* 2 */
DEBUG_BIT(auth),
DEBUG_BIT(deliver),
DEBUG_BIT(dns),
DEBUG_BIT(dnsbl),
- DEBUG_BIT(exec),
+ DEBUG_BIT(exec), /* 7 */
DEBUG_BIT(expand),
DEBUG_BIT(filter),
DEBUG_BIT(hints_lookup),
DEBUG_BIT(ident),
DEBUG_BIT(interface),
DEBUG_BIT(lists),
- DEBUG_BIT(load),
+ DEBUG_BIT(load), /* 15 */
DEBUG_BIT(lookup),
DEBUG_BIT(memory),
+ DEBUG_BIT(noutf8),
DEBUG_BIT(pid),
DEBUG_BIT(process_info),
DEBUG_BIT(queue_run),
DEBUG_BIT(receive),
- DEBUG_BIT(resolver),
+ DEBUG_BIT(resolver), /* 23 */
DEBUG_BIT(retry),
DEBUG_BIT(rewrite),
DEBUG_BIT(route),
DEBUG_BIT(tls),
DEBUG_BIT(transport),
DEBUG_BIT(uid),
- DEBUG_BIT(verify),
+ DEBUG_BIT(verify), /* 31 */
};
/* Multi-bit debug masks */
#define D_any (D_all & \
~(D_v | \
+ D_noutf8 | \
D_pid | \
D_timestamp) )
D_load | \
D_local_scan | \
D_memory | \
+ D_noutf8 | \
D_pid | \
D_timestamp | \
D_resolver))
/* 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(). */
+declarations. The Li_all value is recognized specially by decode_bits().
+Add also to log_options[] when creating new ones. */
#define LOG_BIT(name) Li_##name = IOTA(Li_iota), L_##name = BIT(Li_##name)
-enum {
+enum logbit {
Li_all = -1,
Li_iota = IOTA_INIT(0),
LOG_BIT(smtp_protocol_error),
LOG_BIT(smtp_syntax_error),
- Li_acl_warn_skipped = BITWORDSIZE,
+ 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_msg_id,
+ Li_msg_id_created,
+ 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_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_resumption,
Li_tls_sni,
Li_unknown_in_list,
- Li_8bitmime,
- Li_smtp_mailauth,
- Li_proxy,
- Li_outgoing_interface,
- log_selector_size = BITWORD(Li_outgoing_interface) + 1
+ 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_DATA4XX (-46) /* DATA gave 4xx error */
#define ERRNO_PROXYFAIL (-47) /* Negotiation failed for proxy configured host */
#define ERRNO_AUTHPROB (-48) /* Authenticator "other" failure */
-
-#ifdef EXPERIMENTAL_INTERNATIONAL
-# define ERRNO_UTF8_FWD (-49) /* target not supporting SMTPUTF8 */
-#endif
+#define ERRNO_UTF8_FWD (-49) /* target not supporting SMTPUTF8 */
+#define ERRNO_HOST_IS_LOCAL (-50) /* Transport refuses to talk to localhost */
/* These must be last, so all retry deferments can easily be identified */
#define ERRNO_RETRY_BASE (-51) /* Base to test against */
#define ERRNO_RRETRY (-51) /* Not time for routing */
+
+#define ERRNO_WARN_BASE (-52) /* Base to test against */
#define ERRNO_LRETRY (-52) /* Not time for local delivery */
#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 */
+#define ERRNO_EVENT (-57) /* Event processing request alternate response */
+
+
/* Special actions to take after failure or deferment. */
#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. */
enum { MSG_DELIVER, MSG_FREEZE, MSG_REMOVE, MSG_THAW, MSG_ADD_RECIPIENT,
MSG_MARK_ALL_DELIVERED, MSG_MARK_DELIVERED, MSG_EDIT_SENDER,
- MSG_SHOW_COPY, MSG_LOAD,
+ MSG_SHOW_COPY, MSG_LOAD, MSG_SETQUEUE,
/* These ones must be last: a test for >= MSG_SHOW_BODY is used
to test for actions that list individual spool files. */
MSG_SHOW_BODY, MSG_SHOW_HEADER, MSG_SHOW_LOG };
#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 */
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_EARLY_PIPE BIT(8)
+
+/* Argument for *_getc */
+
+#define GETC_BUFFER_UNLIMITED UINT_MAX
+
+/* UTF-8 chars for line-drawing */
+
+#define UTF8_DOWN_RIGHT "\xE2\x95\xAD"
+#define UTF8_VERT "\xE2\x94\x82"
+#define UTF8_HORIZ "\xE2\x94\x80"
+#define UTF8_VERT_RIGHT "\xE2\x94\x9C"
+#define UTF8_UP_RIGHT "\xE2\x95\xB0"
+#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
+
+
+#ifdef COMPILE_UTILITY
+# define ALARM(seconds) alarm(seconds);
+# define ALARM_CLR(seconds) alarm(seconds);
+#else
+/* For debugging of odd alarm-signal problems, stash caller info while the
+alarm is active. Clear it down on cancelling the alarm so we can tell there
+should not be one active. */
+
+# define ALARM(seconds) \
+ debug_selector & D_any \
+ ? (sigalarm_setter = CUS __FUNCTION__, alarm(seconds)) : alarm(seconds);
+# define ALARM_CLR(seconds) \
+ debug_selector & D_any \
+ ? (sigalarm_setter = NULL, alarm(seconds)) : alarm(seconds);
+#endif
+
+#define AUTHS_REGEX US"\\n250[\\s\\-]AUTH\\s+([\\-\\w \\t]+)(?:\\n|$)"
+
+#define EARLY_PIPE_FEATURE_NAME "X_PIPE_CONNECT"
+#define EARLY_PIPE_FEATURE_LEN 14
+
+
+/* Flags for auth_client_item() */
+
+#define AUTH_ITEM_FIRST BIT(0)
+#define AUTH_ITEM_LAST BIT(1)
+#define AUTH_ITEM_IGN64 BIT(2)
+
+
+/* Flags for tls_{in,out}_resumption */
+#define RESUME_SUPPORTED BIT(0)
+#define RESUME_CLIENT_REQUESTED BIT(1)
+#define RESUME_CLIENT_SUGGESTED BIT(2)
+#define RESUME_SERVER_TICKET BIT(3)
+#define RESUME_USED BIT(4)
+
+#define RESUME_DECODE_STRING \
+ US"not requested or offered : 0x02 :client requested, no server ticket" \
+ ": 0x04 : 0x05 : 0x06 :client offered session, no server action" \
+ ": 0x08 :no client request: 0x0A :client requested new ticket, server provided" \
+ ": 0x0C :client offered session, not used: 0x0E :client offered session, server only provided new ticket" \
+ ": 0x10 :session resumed unasked: 0x12 :session resumed unasked" \
+ ": 0x14 : 0x15 : 0x16 :session resumed" \
+ ": 0x18 :session resumed unasked: 0x1A :session resumed unasked" \
+ ": 0x1C :session resumed: 0x1E :session resumed, also new ticket"
+
+/* Flags for string_vformat */
+#define SVFMT_EXTEND BIT(0)
+#define SVFMT_REBUFFER BIT(1)
+#define SVFMT_TAINT_NOCHK BIT(2)
+
+
+#define NOTIFIER_SOCKET_NAME "exim_daemon_notify"
+#define NOTIFY_MSG_QRUN 1 /* Notify message types */
+#define NOTIFY_QUEUE_SIZE_REQ 2
+
/* End of macros.h */
git://git.exim.org / users / heiko / exim.git / blobdiff