/* * Copyright (c) 1998-2013 Proofpoint, Inc. and its suppliers. * All rights reserved. * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * By using this file, you agree to the terms and conditions set * forth in the LICENSE file which can be found at the top level of * the sendmail distribution. */ /* ** SENDMAIL.H -- MTA-specific definitions for sendmail. */ #ifndef _SENDMAIL_H # define _SENDMAIL_H 1 #ifndef MILTER # define MILTER 1 /* turn on MILTER by default */ #endif #ifdef _DEFINE # define EXTERN #else # define EXTERN extern #endif #include #include #include #include #include #include #include #include #include "sendmail/sendmail.h" #if STARTTLS # include # if _FFR_TLSA_DANE && !defined(DANE) # define DANE _FFR_TLSA_DANE # endif #else /* STARTTLS */ # if DANE # ERROR "DANE set but STARTTLS not defined" # endif # if _FFR_TLS_ALTNAMES # ERROR "_FFR_TLS_ALTNAMES set but STARTTLS not defined" # endif # if _FFR_TLSFB2CLEAR # ERROR "_FFR_TLSFB2CLEAR set but STARTTLS not defined" # endif # if _FFR_TLS_USE_CERTIFICATE_CHAIN_FILE # ERROR "_FFR_TLS_USE_CERTIFICATE_CHAIN_FILE set but STARTTLS not defined" # endif #endif /* STARTTLS */ /* profiling? */ #if MONCONTROL # define SM_PROF(x) moncontrol(x) #else # define SM_PROF(x) #endif #ifdef _DEFINE # ifndef lint SM_UNUSED(static char SmailId[]) = "@(#)$Id: sendmail.h,v 8.1104 2013-11-22 20:51:56 ca Exp $"; # endif #endif #include "bf.h" #include "timers.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef LOG # include #endif #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 # include #endif #if NETUNIX # include #endif #if NETINET || NETINET6 # include #endif #if NETINET6 /* ** There is no standard yet for IPv6 includes. ** Specify OS specific implementation in conf.h */ #endif /* NETINET6 */ #if NETISO # include #endif #if NETNS # include #endif #if NETX25 # include #endif #if NAMED_BIND # include # ifdef NOERROR # undef NOERROR /* avoid conflict */ # endif # include #else /* NAMED_BIND */ # undef SM_SET_H_ERRNO # define SM_SET_H_ERRNO(err) #endif /* NAMED_BIND */ #if HESIOD # include # if !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) # define HESIOD_INIT /* support for the new interface */ # endif #endif /* HESIOD */ #if USE_EAI && !defined(ALLOW_255) # define ALLOW_255 1 #endif #if _FFR_EAI && _FFR_EIGHT_BIT_ADDR_OK # ERROR "Cannot enable both of these FFRs: _FFR_EAI _FFR_EIGHT_BIT_ADDR_OK" #endif #if _FFR_OCC && !SM_CONF_SHM # ERROR "_FFR_OCC requires SM_CONF_SHM" #endif #if _FFR_SM_LDAP_DBG && !(LDAPMAP && defined(LBER_OPT_LOG_PRINT_FN)) # ERROR "_FFR_SM_LDAP_DBG requires LDAPMAP and LBER_OPT_LOG_PRINT_FN" #endif #if _FFR_LOG_MORE1 > 1 || _FFR_LOG_MORE2 > 1 # if _FFR_LOG_MORE1 != _FFR_LOG_MORE2 # ERROR "_FFR_LOG_MORE1 != _FFR_LOG_MORE2" # endif #endif #if LDAP_NETWORK_TIMEOUT && !(LDAPMAP && defined(LDAP_OPT_NETWORK_TIMEOUT)) # ERROR "LDAP_NETWORK_TIMEOUT requires LDAPMAP" #endif #if _FFR_VRFY_TRUSTED_FIRST && !defined(X509_V_FLAG_TRUSTED_FIRST) # ERROR "_FFR_VRFY_TRUSTED_FIRST set but X509_V_FLAG_TRUSTED_FIRST not defined" #endif #if _FFR_8BITENVADDR # define MAXNAME_I ((MAXNAME) * 2) #else # define MAXNAME_I MAXNAME #endif #define SM_IS_EMPTY(s) (NULL == (s) || '\0' == *(s)) #if STARTTLS # if DANE struct dane_vrfy_ctx_S { int dane_vrfy_chk; int dane_vrfy_res; int dane_vrfy_port; /* look up TLSA RRs, SNI unless dane_tlsa_sni is set. */ char *dane_vrfy_host; char *dane_vrfy_sni; /* if not NULL: use for SNI */ /* full fingerprint in printable format */ char dane_vrfy_fp[1024]; }; typedef struct dane_tlsa_S dane_tlsa_T, *dane_tlsa_P; typedef struct dane_vrfy_ctx_S dane_vrfy_ctx_T, *dane_vrfy_ctx_P; # endif /* DANE */ /* TLS information context */ struct tlsi_ctx_S { /* use unsigned long? */ BITMAP256 tlsi_flags; # if DANE dane_vrfy_ctx_T tlsi_dvc; # endif }; typedef struct tlsi_ctx_S tlsi_ctx_T, *tlsi_ctx_P; /* TLS information context flags */ #define TLSI_FL_CRLREQ 'R' /* CRL required */ #define TLSI_FL_FB2CLR 'C' /* fall back to clear text is ok */ #define TLSI_FL_NOFB2CLR 'c' /* do not fall back to clear text */ #define TLSI_FL_NODANE 'd' /* do not use/lookup DANE */ #define TLSI_FL_NOSTS 'M' /* do not use/lookup STS */ /* internal */ #define TLSI_FL_STS_NOFB2CLR 0x01 /* no clear text: STS is used */ #define SM_TLSI_IS(tlsi_ctx, flag) \ (((tlsi_ctx) != NULL) && bitnset((flag), (tlsi_ctx)->tlsi_flags)) /* ugly hack, is it worth using different values? */ # if _FFR_LOG_MORE1 > 1 || _FFR_LOG_MORE2 > 1 # define LOG_MORE_2(buf, bp) \ p = macvalue(macid("{tls_version}"), e); \ if (SM_IS_EMPTY(p)) \ p = "NONE"; \ (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", tls_version=%.10s", p); \ bp += strlen(bp); \ p = macvalue(macid("{cipher}"), e); \ if (SM_IS_EMPTY(p)) \ p = "NONE"; \ (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", cipher=%.20s", p); \ bp += strlen(bp); # else # define LOG_MORE_2(buf, bp) # endif # define LOG_MORE(buf, bp) \ p = macvalue(macid("{verify}"), e); \ if (SM_IS_EMPTY(p)) \ p = "NONE"; \ (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", tls_verify=%.20s", p); \ bp += strlen(bp); \ LOG_MORE_2(buf, bp) #else # define LOG_MORE(buf, bp) #endif /* STARTTLS */ #if SASL /* include the sasl include files if we have them */ # if SASL == 2 || SASL >= 20000 # include # include # include # if SASL_VERSION_FULL < 0x020119 typedef int (*sasl_callback_ft)(void); # endif # else /* SASL == 2 || SASL >= 20000 */ # include # include typedef int (*sasl_callback_ft)(void); # endif /* SASL == 2 || SASL >= 20000 */ # if defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) # define SASL_VERSION (SASL_VERSION_MAJOR * 10000) + (SASL_VERSION_MINOR * 100) + SASL_VERSION_STEP # if SASL == 1 || SASL == 2 # undef SASL # define SASL SASL_VERSION # else /* SASL == 1 || SASL == 2 */ # if SASL != SASL_VERSION # ERROR "README: -DSASL (SASL) does not agree with the version of the CYRUS_SASL library (SASL_VERSION)" # ERROR "README: see README!" # endif /* SASL != SASL_VERSION */ # endif /* SASL == 1 || SASL == 2 */ # else /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ # if SASL == 1 # ERROR "README: please set -DSASL to the version of the CYRUS_SASL library" # ERROR "README: see README!" # endif /* SASL == 1 */ # endif /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ #endif /* SASL */ /* ** Following are "sort of" configuration constants, but they should ** be pretty solid on most architectures today. They have to be ** defined after because some versions of that ** file also define them. In all cases, we can't use sizeof because ** some systems (e.g., Crays) always treat everything as being at ** least 64 bits. */ #ifndef INADDRSZ # define INADDRSZ 4 /* size of an IPv4 address in bytes */ #endif #ifndef IN6ADDRSZ # define IN6ADDRSZ 16 /* size of an IPv6 address in bytes */ #endif #ifndef INT16SZ # define INT16SZ 2 /* size of a 16 bit integer in bytes */ #endif #ifndef INT32SZ # define INT32SZ 4 /* size of a 32 bit integer in bytes */ #endif #ifndef INADDR_LOOPBACK # define INADDR_LOOPBACK 0x7f000001 /* loopback address */ #endif /* ** Error return from inet_addr(3), in case not defined in /usr/include. */ #ifndef INADDR_NONE # define INADDR_NONE 0xffffffff #endif /* By default use uncompressed IPv6 address format (no "::") */ #ifndef IPV6_FULL # define IPV6_FULL 1 #endif /* (f)open() modes for queue files */ #define QF_O_EXTRA 0 #define SM_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0])) /* ** An 'argument class' describes the storage allocation status ** of an object pointed to by an argument to a function. */ typedef enum { A_HEAP, /* the storage was allocated by malloc, and the * ownership of the storage is ceded by the caller * to the called function. */ A_TEMP, /* The storage is temporary, and is only guaranteed * to be valid for the duration of the function call. */ A_PERM /* The storage is 'permanent': this might mean static * storage, or rpool storage. */ } ARGCLASS_T; /* forward references for prototypes */ typedef struct envelope ENVELOPE; typedef struct mailer MAILER; typedef struct queuegrp QUEUEGRP; /* ** Address structure. ** Addresses are stored internally in this structure. */ struct address { char *q_paddr; /* the printname for the address */ char *q_user; /* user name */ char *q_ruser; /* real user name, or NULL if q_user */ char *q_host; /* host name */ #if DANE char *q_qname; /* original query (host) name */ #endif struct mailer *q_mailer; /* mailer to use */ unsigned long q_flags; /* status flags, see below */ uid_t q_uid; /* user-id of receiver (if known) */ gid_t q_gid; /* group-id of receiver (if known) */ char *q_home; /* home dir (local mailer only) */ char *q_fullname; /* full name if known */ struct address *q_next; /* chain */ struct address *q_alias; /* address this results from */ char *q_owner; /* owner of q_alias */ struct address *q_tchain; /* temporary use chain */ #if PIPELINING struct address *q_pchain; /* chain for pipelining */ #endif char *q_finalrcpt; /* Final-Recipient: DSN header */ char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ char *q_status; /* status code for DSNs */ char *q_rstatus; /* remote status message for DSNs */ time_t q_statdate; /* date of status messages */ char *q_statmta; /* MTA generating q_rstatus */ short q_state; /* address state, see below */ char *q_signature; /* MX-based sorting value */ int q_qgrp; /* index into queue groups */ char *q_message; /* error message */ }; typedef struct address ADDRESS; /* bit values for q_flags */ #define QGOODUID 0x00000001 /* the q_uid q_gid fields are good */ #define QPRIMARY 0x00000002 /* set from RCPT or argv */ #define QNOTREMOTE 0x00000004 /* address not for remote forwarding */ #define QSELFREF 0x00000008 /* this address references itself */ #define QBOGUSSHELL 0x00000010 /* user has no valid shell listed */ #define QUNSAFEADDR 0x00000020 /* address acquired via unsafe path */ #define QPINGONSUCCESS 0x00000040 /* give return on successful delivery */ #define QPINGONFAILURE 0x00000080 /* give return on failure */ #define QPINGONDELAY 0x00000100 /* give return on message delay */ #define QHASNOTIFY 0x00000200 /* propagate notify parameter */ #define QRELAYED 0x00000400 /* DSN: relayed to non-DSN aware sys */ #define QEXPANDED 0x00000800 /* DSN: undergone list expansion */ #define QDELIVERED 0x00001000 /* DSN: successful final delivery */ #define QDELAYED 0x00002000 /* DSN: message delayed */ #define QALIAS 0x00004000 /* expanded alias */ #define QBYTRACE 0x00008000 /* DeliverBy: trace */ #define QBYNDELAY 0x00010000 /* DeliverBy: notify, delay */ #define QBYNRELAY 0x00020000 /* DeliverBy: notify, relayed */ #define QINTBCC 0x00040000 /* internal Bcc */ #define QDYNMAILER 0x00080000 /* "dynamic mailer" */ #define QSECURE 0x00100000 /* DNSSEC ok */ #define QQUEUED 0x00200000 /* queued */ #define QINTREPLY 0x00400000 /* internally rejected (delivery) */ #define QTHISPASS 0x40000000 /* temp: address set this pass */ #define QRCPTOK 0x80000000 /* recipient() processed address */ #define QDYNMAILFLG 'Y' #define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) #if _FFR_RCPTFLAGS # define QMATCHFLAGS (QINTBCC|QDYNMAILER) # define QMATCH_FLAG(a) ((a)->q_flags & QMATCHFLAGS) # define ADDR_FLAGS_MATCH(a, b) (QMATCH_FLAG(a) == QMATCH_FLAG(b)) #else # define ADDR_FLAGS_MATCH(a, b) true #endif /* values for q_state */ #define QS_OK 0 /* address ok (for now)/not yet tried */ #define QS_SENT 1 /* good address, delivery complete */ #define QS_BADADDR 2 /* illegal address */ #define QS_QUEUEUP 3 /* save address in queue */ #define QS_RETRY 4 /* retry delivery for next MX */ #define QS_VERIFIED 5 /* verified, but not expanded */ /* ** Notice: all of the following values are variations of QS_DONTSEND. ** If new states are added, they must be inserted in the proper place! ** See the macro definition of QS_IS_DEAD() down below. */ #define QS_DONTSEND 6 /* don't send to this address */ #define QS_EXPANDED 7 /* expanded */ #define QS_SENDER 8 /* message sender (MeToo) */ #define QS_CLONED 9 /* addr cloned to split envelope */ #define QS_DISCARDED 10 /* rcpt discarded (EF_DISCARD) */ #define QS_REPLACED 11 /* maplocaluser()/UserDB replaced */ #define QS_REMOVED 12 /* removed (removefromlist()) */ #define QS_DUPLICATE 13 /* duplicate suppressed */ #define QS_INCLUDED 14 /* :include: delivery */ #define QS_FATALERR 15 /* fatal error, don't deliver */ /* address state testing primitives */ #define QS_IS_OK(s) ((s) == QS_OK) #define QS_IS_SENT(s) ((s) == QS_SENT) #define QS_IS_BADADDR(s) ((s) == QS_BADADDR) #define QS_IS_QUEUEUP(s) ((s) == QS_QUEUEUP) #define QS_IS_RETRY(s) ((s) == QS_RETRY) #define QS_IS_VERIFIED(s) ((s) == QS_VERIFIED) #define QS_IS_EXPANDED(s) ((s) == QS_EXPANDED) #define QS_IS_REMOVED(s) ((s) == QS_REMOVED) #define QS_IS_UNDELIVERED(s) ((s) == QS_OK || \ (s) == QS_QUEUEUP || \ (s) == QS_RETRY || \ (s) == QS_VERIFIED) #define QS_IS_UNMARKED(s) ((s) == QS_OK || \ (s) == QS_RETRY) #define QS_IS_SENDABLE(s) ((s) == QS_OK || \ (s) == QS_QUEUEUP || \ (s) == QS_RETRY) #define QS_IS_ATTEMPTED(s) ((s) == QS_QUEUEUP || \ (s) == QS_RETRY || \ (s) == QS_SENT || \ (s) == QS_DISCARDED) #define QS_IS_DEAD(s) ((s) >= QS_DONTSEND) #define QS_IS_TEMPFAIL(s) ((s) == QS_QUEUEUP || (s) == QS_RETRY) #define QUP_FL_NONE 0x0000 #define QUP_FL_ANNOUNCE 0x0001 #define QUP_FL_MSYNC 0x0002 #define QUP_FL_UNLOCK 0x0004 #define NULLADDR ((ADDRESS *) NULL) extern ADDRESS NullAddress; /* a null (template) address [main.c] */ /* for cataddr() */ #define NOSPACESEP 256 /* functions */ extern void cataddr __P((char **, char **, char *, int, int, bool)); extern char *crackaddr __P((char *, ENVELOPE *)); extern bool emptyaddr __P((ADDRESS *)); extern ADDRESS *getctladdr __P((ADDRESS *)); extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern bool invalidaddr __P((char *, char *, bool)); extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *, bool)); extern char **prescan __P((char *, int, char[], int, char **, unsigned char *, bool)); extern void printaddr __P((SM_FILE_T *, ADDRESS *, bool)); extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); extern int rewrite __P((char **, int, int, ENVELOPE *, int)); extern bool sameaddr __P((ADDRESS *, ADDRESS *)); extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); #if MILTER extern int removefromlist __P((char *, ADDRESS **, ENVELOPE *)); #endif extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *)); extern void parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *, char *, char *args[], esmtp_args_F)); extern esmtp_args_F mail_esmtp_args; extern esmtp_args_F rcpt_esmtp_args; extern void reset_mail_esmtp_args __P((ENVELOPE *)); /* macro to simplify the common call to rewrite() */ #define REWRITE(pvp, rs, env) rewrite(pvp, rs, 0, env, MAXATOM) /* ** Token Tables for prescan */ extern unsigned char ExtTokenTab[256]; /* external strings */ extern unsigned char IntTokenTab[256]; /* internal strings */ /* ** Mailer definition structure. ** Every mailer known to the system is declared in this ** structure. It defines the pathname of the mailer, some ** flags associated with it, and the argument vector to ** pass to it. The flags are defined in conf.c ** ** The argument vector is expanded before actual use. All ** words except the first are passed through the macro ** processor. */ struct mailer { char *m_name; /* symbolic name of this mailer */ char *m_mailer; /* pathname of the mailer to use */ char *m_mtatype; /* type of this MTA */ char *m_addrtype; /* type for addresses */ char *m_diagtype; /* type for diagnostics */ BITMAP256 m_flags; /* status flags, see below */ short m_mno; /* mailer number internally */ short m_nice; /* niceness to run at (mostly for prog) */ char **m_argv; /* template argument vector */ short m_sh_rwset; /* rewrite set: sender header addresses */ short m_se_rwset; /* rewrite set: sender envelope addresses */ short m_rh_rwset; /* rewrite set: recipient header addresses */ short m_re_rwset; /* rewrite set: recipient envelope addresses */ char *m_eol; /* end of line string */ long m_maxsize; /* size limit on message to this mailer */ int m_linelimit; /* max # characters per line */ int m_maxdeliveries; /* max deliveries per mailer connection */ char *m_execdir; /* directory to chdir to before execv */ char *m_rootdir; /* directory to chroot to before execv */ uid_t m_uid; /* UID to run as */ gid_t m_gid; /* GID to run as */ char *m_defcharset; /* default character set */ time_t m_wait; /* timeout to wait for end */ int m_maxrcpt; /* max recipients per envelope client-side */ short m_qgrp; /* queue group for this mailer */ #if DANE unsigned short m_port; /* port (if appropriate for mailer) */ #endif }; /* bits for m_flags */ #define M_xSMTP 0x01 /* internal: {ES,S,L}MTP */ #define M_ESMTP 'a' /* run Extended SMTP */ #define M_ALIASABLE 'A' /* user can be LHS of an alias */ #define M_BLANKEND 'b' /* ensure blank line at end of message */ #define M_STRIPBACKSL 'B' /* strip all leading backslashes from user */ #define M_NOCOMMENT 'c' /* don't include comment part of address */ #define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ #define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ /* 'D' CF: include Date: */ #define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ #define M_ESCFROM 'E' /* escape From lines to >From */ #define M_FOPT 'f' /* mailer takes picky -f flag */ /* 'F' CF: include From: or Resent-From: */ #define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ #define M_HST_UPPER 'h' /* preserve host case distinction */ #define M_PREHEAD 'H' /* MAIL11V3: preview headers */ #define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ #define M_INTERNAL 'I' /* SMTP to another sendmail site */ #define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ #define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ #define M_CHUNKING 'K' /* CHUNKING: reserved for future use */ #define M_LOCALMAILER 'l' /* delivery is to this host */ #define M_LIMITS 'L' /* must enforce SMTP line limits */ #define M_MUSER 'm' /* can handle multiple users at once */ /* 'M' CF: include Message-Id: */ #define M_NHDR 'n' /* don't insert From line */ #define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ #define M_RUNASRCPT 'o' /* always run mailer as recipient */ /* 'O' free? */ #define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ /* 'P' CF: include Return-Path: */ #define M_VRFY250 'q' /* VRFY command returns 250 instead of 252 */ #define M_ROPT 'r' /* mailer takes picky -r flag */ #define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ #define M_STRIPQ 's' /* strip quote chars from user/host */ #define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ #define M_USR_UPPER 'u' /* preserve user case distinction */ #define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ #define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ /* 'V' UIUC: !-relativize all addresses */ #define M_HASPWENT 'w' /* check for /etc/passwd entry */ #define M_NOHOSTSTAT 'W' /* ignore long term host status information */ /* 'x' CF: include Full-Name: */ #define M_XDOT 'X' /* use hidden-dot algorithm */ /* 'y' free? */ /* 'Y' free? */ #define M_LMTP 'z' /* run Local Mail Transport Protocol */ #define M_DIALDELAY 'Z' /* apply dial delay sleeptime */ #define M_NOMX '0' /* turn off MX lookups */ #define M_NONULLS '1' /* don't send null bytes */ #define M_FSMTP '2' /* force SMTP (no ESMTP even if offered) */ /* '4' free? */ #define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ #define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ #define M_7BITHDRS '6' /* strip headers to 7 bits even in 8 bit path */ #define M_7BITS '7' /* use 7-bit path */ #define M_8BITS '8' /* force "just send 8" behaviour */ #define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ #define M_CHECKINCLUDE ':' /* check for :include: files */ #define M_CHECKPROG '|' /* check for |program addresses */ #define M_CHECKFILE '/' /* check for /file addresses */ #define M_CHECKUDB '@' /* user can be user database key */ #define M_CHECKHDIR '~' /* SGI: check for valid home directory */ #define M_HOLD '%' /* Hold delivery until ETRN/-qI/-qR/-qS */ #define M_PLUS '+' /* Reserved: Used in mc for adding new flags */ #define M_MINUS '-' /* Reserved: Used in mc for removing flags */ #define M_NOMHHACK '!' /* Don't perform HM hack dropping explicit from */ /* functions */ extern void initerrmailers __P((void)); extern void makemailer __P((char *)); extern void makequeue __P((char *, bool)); extern void runqueueevent __P((int)); #if _FFR_QUEUE_RUN_PARANOIA extern bool checkqueuerunner __P((void)); #endif EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ EXTERN MAILER *LocalMailer; /* ptr to local mailer */ EXTERN MAILER *ProgMailer; /* ptr to program mailer */ #if _FFR_RCPTFLAGS EXTERN MAILER *Mailer[MAXMAILERS * 2 + 1]; #else EXTERN MAILER *Mailer[MAXMAILERS + 1]; #endif /* ** Queue group definition structure. ** Every queue group known to the system is declared in this structure. ** It defines the basic pathname of the queue group, some flags ** associated with it, and the argument vector to pass to it. */ struct qpaths_s { char *qp_name; /* name of queue dir, relative path */ short qp_subdirs; /* use subdirs? */ short qp_fsysidx; /* file system index of this directory */ #if SM_CONF_SHM int qp_idx; /* index into array for queue information */ #endif }; typedef struct qpaths_s QPATHS; struct queuegrp { char *qg_name; /* symbolic name of this queue group */ /* ** For now this is the same across all queue groups. ** Otherwise we have to play around with chdir(). */ char *qg_qdir; /* common component of queue directory */ short qg_index; /* queue number internally, index in Queue[] */ int qg_maxqrun; /* max # of jobs in one queuerun */ int qg_numqueues; /* number of queues in this queue group */ /* ** qg_queueintvl == 0 denotes that no individual value is used. ** Whatever accesses this must deal with "<= 0" as ** "not set, use appropriate default". */ time_t qg_queueintvl; /* interval for queue runs */ QPATHS *qg_qpaths; /* list of queue directories */ BITMAP256 qg_flags; /* status flags, see below */ short qg_nice; /* niceness for queue run */ int qg_wgrp; /* Assigned to this work group */ int qg_maxlist; /* max items in work queue for this group */ int qg_curnum; /* current number of queue for queue runs */ int qg_maxrcpt; /* max recipients per envelope, 0==no limit */ time_t qg_nextrun; /* time for next queue runs */ #if _FFR_QUEUE_GROUP_SORTORDER short qg_sortorder; /* how do we sort this queuerun */ #endif #if 0 long qg_wkrcptfact; /* multiplier for # recipients -> priority */ long qg_qfactor; /* slope of queue function */ bool qg_doqueuerun; /* XXX flag is it time to do a queuerun */ #endif /* 0 */ }; /* bits for qg_flags */ #define QD_DEFINED ((char) 1) /* queue group has been defined */ #define QD_FORK 'f' /* fork queue runs */ extern void filesys_update __P((void)); #if _FFR_ANY_FREE_FS extern bool filesys_free __P((long)); #endif #if SASL /* ** SASL */ /* lines in authinfo file or index into SASL_AI_T */ # define SASL_WRONG (-1) # define SASL_USER 0 /* authorization id (user) */ # define SASL_AUTHID 1 /* authentication id */ # define SASL_PASSWORD 2 /* password fuer authid */ # define SASL_DEFREALM 3 /* realm to use */ # define SASL_MECHLIST 4 /* list of mechanisms to try */ # define SASL_ID_REALM 5 /* authid@defrealm */ /* ** Current mechanism; this is just used to convey information between ** invocation of SASL callback functions. ** It must be last in the list, because it's not allocated by us ** and hence we don't free() it. */ # define SASL_MECH 6 # define SASL_ENTRIES 7 /* number of entries in array */ # define SASL_USER_BIT (1 << SASL_USER) # define SASL_AUTHID_BIT (1 << SASL_AUTHID) # define SASL_PASSWORD_BIT (1 << SASL_PASSWORD) # define SASL_DEFREALM_BIT (1 << SASL_DEFREALM) # define SASL_MECHLIST_BIT (1 << SASL_MECHLIST) /* authenticated? */ # define SASL_NOT_AUTH 0 /* not authenticated */ # define SASL_PROC_AUTH 1 /* in process of authenticating */ # define SASL_IS_AUTH 2 /* authenticated */ /* SASL options */ # define SASL_AUTH_AUTH 0x10000 /* use auth= only if authenticated */ # if SASL >= 20101 # define SASL_SEC_MASK SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */ # else /* SASL >= 20101 */ # define SASL_SEC_MASK 0x0fff /* mask for SASL_SEC_* values: sasl.h */ # if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \ (SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \ (SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \ (SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \ (SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \ (SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0 # ERROR "change SASL_SEC_MASK notify sendmail.org!" # endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */ # endif /* SASL >= 20101 */ # define MAXOUTLEN 8192 /* length of output buffer, should be 2^n */ # if (SASL_AUTH_AUTH & SASL_SEC_MASK) != 0 # ERROR "change SASL_AUTH_AUTH notify sendmail.org!" # endif /* functions */ extern char *intersect __P((char *, char *, SM_RPOOL_T *)); extern char *iteminlist __P((char *, char *, char *)); # if SASL >= 20000 extern int proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *)); extern int safesaslfile __P((void *, const char *, sasl_verify_type_t)); # else /* SASL >= 20000 */ extern int proxy_policy __P((void *, const char *, const char *, const char **, const char **)); # if SASL > 10515 extern int safesaslfile __P((void *, char *, int)); # else /* SASL > 10515 */ extern int safesaslfile __P((void *, char *)); # endif /* SASL > 10515 */ # endif /* SASL >= 20000 */ extern void stop_sasl_client __P((void)); /* structure to store authinfo */ typedef char *SASL_AI_T[SASL_ENTRIES]; EXTERN char *AuthMechanisms; /* AUTH mechanisms */ EXTERN char *AuthRealm; /* AUTH realm */ EXTERN char *SASLInfo; /* file with AUTH info */ EXTERN int SASLOpts; /* options for SASL */ EXTERN int MaxSLBits; /* max. encryption bits for SASL */ #endif /* SASL */ /* ** Structure to store macros. */ typedef struct { SM_RPOOL_T *mac_rpool; /* resource pool */ BITMAP256 mac_allocated; /* storage has been alloc()? */ char *mac_table[MAXMACROID + 1]; /* macros */ } MACROS_T; EXTERN MACROS_T GlobalMacros; /* ** Information about currently open connections to mailers, or to ** hosts that we have looked up recently. */ #define MCI struct mailer_con_info MCI { unsigned long mci_flags; /* flag bits, see below */ short mci_errno; /* error number on last connection */ short mci_herrno; /* h_errno from last DNS lookup */ short mci_exitstat; /* exit status from last connection */ short mci_state; /* SMTP state */ int mci_deliveries; /* delivery attempts for connection */ long mci_maxsize; /* max size this server will accept */ SM_FILE_T *mci_in; /* input side of connection */ SM_FILE_T *mci_out; /* output side of connection */ pid_t mci_pid; /* process id of subordinate proc */ char *mci_phase; /* SMTP phase string */ struct mailer *mci_mailer; /* ptr to the mailer for this conn */ char *mci_host; /* host name */ char *mci_status; /* DSN status to be copied to addrs */ char *mci_rstatus; /* SMTP status to be copied to addrs */ time_t mci_lastuse; /* last usage time */ SM_FILE_T *mci_statfile; /* long term status file */ char *mci_heloname; /* name to use as HELO arg */ long mci_min_by; /* minimum DELIVERBY */ bool mci_retryrcpt; /* tempfail for at least one rcpt */ char *mci_tolist; /* list of valid recipients */ SM_RPOOL_T *mci_rpool; /* resource pool */ int mci_okrcpts; /* number of valid recipients */ #if PIPELINING ADDRESS *mci_nextaddr; /* next address for pipelined status */ #endif #if SASL SASL_AI_T mci_sai; /* authentication info */ bool mci_sasl_auth; /* authenticated? */ int mci_sasl_string_len; char *mci_sasl_string; /* sasl reply string */ char *mci_saslcap; /* SASL list of mechanisms */ sasl_conn_t *mci_conn; /* SASL connection */ #endif /* SASL */ #if STARTTLS SSL *mci_ssl; /* SSL connection */ tlsi_ctx_T mci_tlsi; #endif MACROS_T mci_macro; /* macro definitions */ }; /* MCI flag bits */ /* XREF: mci.c: MciFlags[]: needs to be kept in sync! */ /* 0x00000001 unused, was MCIF_VALID: this entry is valid */ #define MCIF_OCC_INCR 0x00000002 /* occ values increased */ #define MCIF_CACHED 0x00000004 /* currently in open cache */ #define MCIF_ESMTP 0x00000008 /* this host speaks ESMTP */ #define MCIF_EXPN 0x00000010 /* EXPN command supported */ #define MCIF_SIZE 0x00000020 /* SIZE option supported */ #define MCIF_8BITMIME 0x00000040 /* BODY=8BITMIME supported */ #define MCIF_7BIT 0x00000080 /* strip this message to 7 bits */ /* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */ #define MCIF_INHEADER 0x00000200 /* currently outputing header */ #define MCIF_CVT8TO7 0x00000400 /* convert from 8 to 7 bits */ #define MCIF_DSN 0x00000800 /* DSN extension supported */ #define MCIF_8BITOK 0x00001000 /* OK to send 8 bit characters */ #define MCIF_CVT7TO8 0x00002000 /* convert from 7 to 8 bits */ #define MCIF_INMIME 0x00004000 /* currently reading MIME header */ #define MCIF_AUTH 0x00008000 /* AUTH= supported */ #define MCIF_AUTHACT 0x00010000 /* SASL (AUTH) active */ #define MCIF_ENHSTAT 0x00020000 /* ENHANCEDSTATUSCODES supported */ #define MCIF_PIPELINED 0x00040000 /* PIPELINING supported */ #define MCIF_VERB 0x00080000 /* VERB supported */ #if STARTTLS #define MCIF_TLS 0x00100000 /* STARTTLS supported */ #define MCIF_TLSACT 0x00200000 /* STARTTLS active */ #else /* STARTTLS */ #define MCIF_TLS 0 #define MCIF_TLSACT 0 #endif /* STARTTLS */ #define MCIF_DLVR_BY 0x00400000 /* DELIVERBY */ #if _FFR_IGNORE_EXT_ON_HELO # define MCIF_HELO 0x00800000 /* we used HELO: ignore extensions */ #endif #define MCIF_INLONGLINE 0x01000000 /* in the middle of a long line */ #define MCIF_AUTH2 0x02000000 /* got 2 AUTH lines */ #define MCIF_ONLY_EHLO 0x10000000 /* use only EHLO in smtpinit */ #if _FFR_HANDLE_HDR_RW_TEMPFAIL /* an error is not sticky (if put{header,body}() etc fail) */ # define MCIF_NOTSTICKY 0x20000000 #else # define MCIF_NOTSTICKY 0 #endif #if USE_EAI # define MCIF_EAI 0x40000000 /* SMTPUTF8 supported */ #else # define MCIF_EAI 0x00000000 /* for MCIF_EXTENS */ #endif #define MCIF_EXTENS (MCIF_EXPN|MCIF_SIZE|MCIF_8BITMIME|MCIF_DSN|MCIF_8BITOK|MCIF_AUTH|MCIF_ENHSTAT|MCIF_PIPELINED|MCIF_VERB|MCIF_TLS|MCIF_DLVR_BY|MCIF_AUTH2|MCIF_EAI) /* states */ #define MCIS_CLOSED 0 /* no traffic on this connection */ #define MCIS_OPENING 1 /* sending initial protocol */ #define MCIS_OPEN 2 /* open, initial protocol sent */ #define MCIS_MAIL 3 /* MAIL command sent */ #define MCIS_RCPT 4 /* RCPT commands being sent */ #define MCIS_DATA 5 /* DATA command sent */ #define MCIS_QUITING 6 /* running quit protocol */ #define MCIS_SSD 7 /* service shutting down */ #define MCIS_ERROR 8 /* I/O error on connection */ /* functions */ extern void mci_cache __P((MCI *)); extern void mci_close __P((MCI *, char *where)); extern void mci_dump __P((SM_FILE_T *, MCI *, bool)); extern void mci_dump_all __P((SM_FILE_T *, bool)); extern void mci_flush __P((bool, MCI *)); extern void mci_clr_extensions __P((MCI *)); extern MCI *mci_get __P((char *, MAILER *)); extern int mci_lock_host __P((MCI *)); extern bool mci_match __P((char *, MAILER *)); extern int mci_print_persistent __P((char *, char *)); extern int mci_purge_persistent __P((char *, char *)); extern MCI **mci_scan __P((MCI *)); extern void mci_setstat __P((MCI *, int, char *, char *)); extern void mci_store_persistent __P((MCI *)); extern int mci_traverse_persistent __P((int (*)(char *, char *), char *)); extern void mci_unlock_host __P((MCI *)); EXTERN int MaxMciCache; /* maximum entries in MCI cache */ EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ /* ** Header structure. ** This structure is used internally to store header items. */ struct header { char *h_field; /* the name of the field */ char *h_value; /* the value of that field */ struct header *h_link; /* the next header */ unsigned char h_macro; /* include header if macro defined */ unsigned long h_flags; /* status bits, see below */ BITMAP256 h_mflags; /* m_flags bits needed */ }; typedef struct header HDR; /* ** Header information structure. ** Defined in conf.c, this struct declares the header fields ** that have some magic meaning. */ struct hdrinfo { char *hi_field; /* the name of the field */ unsigned long hi_flags; /* status bits, see below */ char *hi_ruleset; /* validity check ruleset */ }; extern struct hdrinfo HdrInfo[]; /* bits for h_flags and hi_flags */ #define H_EOH 0x00000001 /* field terminates header */ #define H_RCPT 0x00000002 /* contains recipient addresses */ #define H_DEFAULT 0x00000004 /* if another value is found, drop this */ #define H_RESENT 0x00000008 /* this address is a "Resent-..." address */ #define H_CHECK 0x00000010 /* check h_mflags against m_flags */ #define H_ACHECK 0x00000020 /* ditto, but always (not just default) */ #define H_FORCE 0x00000040 /* force this field, even if default */ #define H_TRACE 0x00000080 /* this field contains trace information */ #define H_FROM 0x00000100 /* this is a from-type field */ #define H_VALID 0x00000200 /* this field has a validated value */ #define H_RECEIPTTO 0x00000400 /* field has return receipt info */ #define H_ERRORSTO 0x00000800 /* field has error address info */ #define H_CTE 0x00001000 /* field is a content-transfer-encoding */ #define H_CTYPE 0x00002000 /* this is a content-type field */ #define H_BCC 0x00004000 /* Bcc: header: strip value or delete */ #define H_ENCODABLE 0x00008000 /* field can be RFC 1522 encoded */ #define H_STRIPCOMM 0x00010000 /* header check: strip comments */ #define H_BINDLATE 0x00020000 /* only expand macros at deliver */ #define H_USER 0x00040000 /* header came from the user/SMTP */ #if _FFR_MTA_MODE # define H_ASIS 0x10000000 #endif /* bits for chompheader() */ #define CHHDR_DEF 0x0001 /* default header */ #define CHHDR_CHECK 0x0002 /* call ruleset for header */ #define CHHDR_USER 0x0004 /* header from user */ #define CHHDR_QUEUE 0x0008 /* header from queue file */ /* functions */ extern void addheader __P((char *, char *, int, ENVELOPE *, bool)); extern unsigned long chompheader __P((char *, int, HDR **, ENVELOPE *)); extern bool commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int)); extern HDR *copyheader __P((HDR *, SM_RPOOL_T *)); extern void eatheader __P((ENVELOPE *, bool, bool)); extern char *hvalue __P((char *, HDR *)); extern void insheader __P((int, char *, char *, int, ENVELOPE *, bool)); extern bool isheader __P((char *)); extern bool putfromline __P((MCI *, ENVELOPE *)); extern void setupheaders __P((void)); /* ** Performance monitoring */ #define TIMERS struct sm_timers TIMERS { TIMER ti_overall; /* the whole process */ }; #define PUSHTIMER(l, t) { if (tTd(98, l)) pushtimer(&t); } #define POPTIMER(l, t) { if (tTd(98, l)) poptimer(&t); } /* ** Envelope structure. ** This structure defines the message itself. There is usually ** only one of these -- for the message that we originally read ** and which is our primary interest -- but other envelopes can ** be generated during processing. For example, error messages ** will have their own envelope. */ struct envelope { HDR *e_header; /* head of header list */ long e_msgpriority; /* adjusted priority of this message */ time_t e_ctime; /* time message appeared in the queue */ char *e_to; /* (list of) target person(s) */ ADDRESS e_from; /* the person it is from */ char *e_sender; /* e_from.q_paddr w comments stripped */ char **e_fromdomain; /* the domain part of the sender */ #if USE_EAI bool e_smtputf8; /* requires SMTPUTF8? */ #endif ADDRESS *e_sendqueue; /* list of message recipients */ ADDRESS *e_errorqueue; /* the queue for error responses */ /* ** Overflow detection is based on < 0, so don't change this ** to unsigned. We don't use unsigned and == ULONG_MAX because ** some libc's don't have strtoul(), see mail_esmtp_args(). */ long e_msgsize; /* size of the message in bytes */ char *e_msgid; /* message id (for logging) */ unsigned long e_flags; /* flags, see below */ int e_nrcpts; /* number of recipients */ short e_class; /* msg class (priority, junk, etc.) */ short e_hopcount; /* number of times processed */ short e_nsent; /* number of sends since checkpoint */ short e_sendmode; /* message send mode */ short e_errormode; /* error return mode */ short e_timeoutclass; /* message timeout class */ bool (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); /* function to put header of message */ bool (*e_putbody)__P((MCI *, ENVELOPE *, char *)); /* function to put body of message */ ENVELOPE *e_parent; /* the message this one encloses */ ENVELOPE *e_sibling; /* the next envelope of interest */ char *e_bodytype; /* type of message body */ SM_FILE_T *e_dfp; /* data file */ char *e_id; /* code for this entry in queue */ #if _FFR_SESSID char *e_sessid; /* session ID for this envelope */ #endif int e_qgrp; /* queue group (index into queues) */ int e_qdir; /* index into queue directories */ int e_dfqgrp; /* data file queue group index */ int e_dfqdir; /* data file queue directory index */ int e_xfqgrp; /* queue group (index into queues) */ int e_xfqdir; /* index into queue directories (xf) */ SM_FILE_T *e_xfp; /* transcript file */ SM_FILE_T *e_lockfp; /* the lock file for this message */ char *e_message; /* error message; readonly; NULL, * or allocated from e_rpool */ char *e_statmsg; /* stat msg (changes per delivery). * readonly. NULL or allocated from * e_rpool. */ char *e_quarmsg; /* why envelope is quarantined */ char e_qfletter; /* queue file letter on disk */ char *e_msgboundary; /* MIME-style message part boundary */ char *e_origrcpt; /* original recipient (one only) */ char *e_envid; /* envelope id from MAIL FROM: line */ char *e_status; /* DSN status for this message */ time_t e_dtime; /* time of last delivery attempt */ int e_ntries; /* number of delivery attempts */ dev_t e_dfdev; /* data file device (crash recovery) */ ino_t e_dfino; /* data file inode (crash recovery) */ MACROS_T e_macro; /* macro definitions */ MCI *e_mci; /* connection info */ char *e_auth_param; /* readonly; NULL or static storage or * allocated from e_rpool */ TIMERS e_timers; /* per job timers */ long e_deliver_by; /* deliver by */ int e_dlvr_flag; /* deliver by flag */ SM_RPOOL_T *e_rpool; /* resource pool for this envelope */ unsigned int e_features; /* server features */ #define ENHSC_LEN 11 #if _FFR_MILTER_ENHSC char e_enhsc[ENHSC_LEN]; /* enhanced status code */ #endif /* smtp error codes during delivery */ int e_rcode; /* reply code */ char e_renhsc[ENHSC_LEN]; /* enhanced status code */ char *e_text; /* reply text */ }; #define PRT_NONNEGL(v) ((v) < 0 ? LONG_MAX : (v)) /* values for e_flags */ #define EF_OLDSTYLE 0x00000001L /* use spaces (not commas) in hdrs */ #define EF_INQUEUE 0x00000002L /* this message is fully queued */ #define EF_NO_BODY_RETN 0x00000004L /* omit message body on error */ #define EF_CLRQUEUE 0x00000008L /* disk copy is no longer needed */ #define EF_SENDRECEIPT 0x00000010L /* send a return receipt */ #define EF_FATALERRS 0x00000020L /* fatal errors occurred */ #define EF_DELETE_BCC 0x00000040L /* delete Bcc: headers entirely */ #define EF_RESPONSE 0x00000080L /* this is an error or return receipt */ #define EF_RESENT 0x00000100L /* this message is being forwarded */ #define EF_VRFYONLY 0x00000200L /* verify only (don't expand aliases) */ #define EF_WARNING 0x00000400L /* warning message has been sent */ #define EF_QUEUERUN 0x00000800L /* this envelope is from queue */ #define EF_GLOBALERRS 0x00001000L /* treat errors as global */ #define EF_PM_NOTIFY 0x00002000L /* send return mail to postmaster */ #define EF_METOO 0x00004000L /* send to me too */ #define EF_LOGSENDER 0x00008000L /* need to log the sender */ #define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ #define EF_HAS8BIT 0x00020000L /* at least one 8-bit char in body */ /* was: EF_NL_NOT_EOL 0x00040000L * don't accept raw NL as EOLine */ /* was: EF_CRLF_NOT_EOL 0x00080000L * don't accept CR-LF as EOLine */ #define EF_RET_PARAM 0x00100000L /* RCPT command had RET argument */ #define EF_HAS_DF 0x00200000L /* set when data file is instantiated */ #define EF_IS_MIME 0x00400000L /* really is a MIME message */ #define EF_DONT_MIME 0x00800000L /* never MIME this message */ #define EF_DISCARD 0x01000000L /* discard the message */ #define EF_TOOBIG 0x02000000L /* message is too big */ #define EF_SPLIT 0x04000000L /* envelope has been split */ #define EF_UNSAFE 0x08000000L /* unsafe: read from untrusted source */ #define EF_TOODEEP 0x10000000L /* message is nested too deep */ #define EF_SECURE 0x20000000L /* DNSSEC for currently parsed addr */ #define DLVR_NOTIFY 0x01 #define DLVR_RETURN 0x02 #define DLVR_TRACE 0x10 #define IS_DLVR_NOTIFY(e) (((e)->e_dlvr_flag & DLVR_NOTIFY) != 0) #define IS_DLVR_RETURN(e) (((e)->e_dlvr_flag & DLVR_RETURN) != 0) #define IS_DLVR_TRACE(e) (((e)->e_dlvr_flag & DLVR_TRACE) != 0) #define IS_DLVR_BY(e) ((e)->e_dlvr_flag != 0) #define BODYTYPE_NONE (0) #define BODYTYPE_7BIT (1) #define BODYTYPE_8BITMIME (2) #define BODYTYPE_ILLEGAL (-1) #define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME) extern ENVELOPE BlankEnvelope; /* functions */ extern void clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *)); extern int dropenvelope __P((ENVELOPE *, bool, bool)); extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *)); extern void clrsessenvelope __P((ENVELOPE *)); extern void printenvflags __P((ENVELOPE *)); extern bool putbody __P((MCI *, ENVELOPE *, char *)); extern bool putheader __P((MCI *, HDR *, ENVELOPE *, int)); /* ** Message priority classes. ** ** The message class is read directly from the Priority: header ** field in the message. ** ** CurEnv->e_msgpriority is the number of bytes in the message plus ** the creation time (so that jobs ``tend'' to be ordered correctly), ** adjusted by the message class, the number of recipients, and the ** amount of time the message has been sitting around. This number ** is used to order the queue. Higher values mean LOWER priority. ** ** Each priority class point is worth WkClassFact priority points; ** each recipient is worth WkRecipFact priority points. Each time ** we reprocess a message the priority is adjusted by WkTimeFact. ** WkTimeFact should normally decrease the priority so that jobs ** that have historically failed will be run later; thanks go to ** Jay Lepreau at Utah for pointing out the error in my thinking. ** ** The "class" is this number, unadjusted by the age or size of ** this message. Classes with negative representations will have ** error messages thrown away if they are not local. */ struct priority { char *pri_name; /* external name of priority */ int pri_val; /* internal value for same */ }; EXTERN int NumPriorities; /* pointer into Priorities */ EXTERN struct priority Priorities[MAXPRIORITIES]; /* ** Rewrite rules. */ struct rewrite { char **r_lhs; /* pattern match */ char **r_rhs; /* substitution value */ struct rewrite *r_next;/* next in chain */ int r_line; /* rule line in sendmail.cf */ }; /* ** Special characters in rewriting rules. ** These are used internally only. ** The COND* rules are actually used in macros rather than in ** rewriting rules, but are given here because they ** cannot conflict. */ /* ** "out of band" indicator ** sm/sendmail.h #define METAQUOTE ((unsigned char)0377) ** quotes the next octet ** range: ((ch) & 0340) == 0200 ** see #define SM_MM_QUOTE(ch) in libsm/util.c */ /* left hand side items */ #define MATCHZANY ((unsigned char)0220) /* match zero or more tokens */ #define MATCHANY ((unsigned char)0221) /* match one or more tokens */ #define MATCHONE ((unsigned char)0222) /* match exactly one token */ #define MATCHCLASS ((unsigned char)0223) /* match one token in a class */ #define MATCHNCLASS ((unsigned char)0224) /* match tokens not in class */ /* right hand side items */ #define MATCHREPL ((unsigned char)0225) /* RHS replacement for above */ #define CANONNET ((unsigned char)0226) /* canonical net, next token */ #define CANONHOST ((unsigned char)0227) /* canonical host, next token */ #define CANONUSER ((unsigned char)0230) /* canonical user, next N tokens */ #define CALLSUBR ((unsigned char)0231) /* call another rewriting set */ /* conditionals in macros (anywhere) */ #define CONDIF ((unsigned char)0232) /* conditional if-then */ #define CONDELSE ((unsigned char)0233) /* conditional else */ #define CONDFI ((unsigned char)0234) /* conditional fi */ /* bracket characters for RHS host name lookup */ #define HOSTBEGIN ((unsigned char)0235) /* hostname lookup begin */ #define HOSTEND ((unsigned char)0236) /* hostname lookup end */ /* bracket characters for RHS generalized lookup */ #define LOOKUPBEGIN ((unsigned char)0205) /* generalized lookup begin */ #define LOOKUPEND ((unsigned char)0206) /* generalized lookup end */ /* macro substitution characters (anywhere) */ #define MACROEXPAND ((unsigned char)0201) /* macro expansion */ #define MACRODEXPAND ((unsigned char)0202) /* deferred macro expansion */ /* to make the code clearer */ #define MATCHZERO CANONHOST #define MAXMATCH 9 /* max params per rewrite */ #define MAX_MAP_ARGS 10 /* max arguments for map */ /* external <==> internal mapping table */ struct metamac { char metaname; /* external code (after $) */ unsigned char metaval; /* internal code (as above) */ }; /* values for macros with external names only */ #define MID_OPMODE 0202 /* operation mode */ /* functions */ #if SM_HEAP_CHECK extern void macdefine_tagged __P(( MACROS_T *_mac, ARGCLASS_T _vclass, int _id, char *_value, char *_file, int _line, int _group)); # define macdefine(mac,c,id,v) \ macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group()) #else /* SM_HEAP_CHECK */ extern void macdefine __P(( MACROS_T *_mac, ARGCLASS_T _vclass, int _id, char *_value)); # define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v) #endif /* SM_HEAP_CHECK */ extern void macset __P((MACROS_T *, int, char *)); #define macget(mac, i) (mac)->mac_table[i] extern void expand __P((char *, char *, size_t, ENVELOPE *)); extern int macid_parse __P((char *, char **)); #define macid(name) macid_parse(name, NULL) extern char *macname __P((int)); extern char *macvalue __P((int, ENVELOPE *)); extern void mactabclear __P((MACROS_T *)); extern int rscheck __P((char *, const char *, const char *, ENVELOPE *, int, int, const char *, const char *, ADDRESS *, char **)); extern int rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int)); extern void setclass __P((int, char *)); extern int strtorwset __P((char *, char **, int)); extern char *translate_dollars __P((char *, char *, int *)); extern bool wordinclass __P((char *, int)); /* ** Name canonification short circuit. ** ** If the name server for a host is down, the process of trying to ** canonify the name can hang. This is similar to (but alas, not ** identical to) looking up the name for delivery. This stab type ** caches the result of the name server lookup so we don't hang ** multiple times. */ #define NAMECANON struct _namecanon NAMECANON { short nc_errno; /* cached errno */ short nc_herrno; /* cached h_errno */ short nc_stat; /* cached exit status code */ short nc_flags; /* flag bits */ char *nc_cname; /* the canonical name */ time_t nc_exp; /* entry expires at */ }; /* values for nc_flags */ #define NCF_VALID 0x0001 /* entry valid */ #define NCF_VALID 0x0001 /* entry valid */ #define NCF_SECURE 0x0002 /* entry secure (DNSSEC) */ /* hostsignature structure */ struct hostsig_t { char *hs_sig; /* hostsignature */ time_t hs_exp; /* entry expires at */ }; typedef struct hostsig_t HOSTSIG_T; /* ** The standard udp packet size PACKETSZ (512) is not sufficient for some ** nameserver answers containing very many resource records. The resolver ** may switch to tcp and retry if it detects udp packet overflow. ** Also note that the resolver routines res_query and res_search return ** the size of the *un*truncated answer in case the supplied answer buffer ** it not big enough to accommodate the entire answer. */ #ifndef MAXPACKET # define MAXPACKET 8192 /* max packet size used internally by BIND */ #endif /* ** The resolver functions res_{send,query,querydomain} expect the ** answer buffer to be aligned, but some versions of gcc4 reverse ** 25 years of history and no longer align char buffers on the ** stack, resulting in crashes on strict-alignment platforms. Use ** this union when putting the buffer on the stack to force the ** alignment, then cast to (HEADER *) or (unsigned char *) as needed. */ typedef union { HEADER qb1; unsigned char qb2[MAXPACKET]; } querybuf; /* result values for getcanonname() etc */ #define HOST_NOTFOUND 0 #define HOST_OK 1 #define HOST_SECURE 2 /* flags for getmxrr() */ #define DROPLOCALHOST 0x01 #define TRYFALLBACK 0x02 #define ISAD 0x04 /* RFC7505: Null MX */ #define NULLMX (-2) /* functions */ extern int getcanonname __P((char *, int, bool, int *)); extern int getmxrr __P((char *, char **, unsigned short *, unsigned int, int *, int *, int)); extern char *hostsignature __P((MAILER *, char *, bool)); extern int getfallbackmxrr __P((char *)); /* ** Mapping functions ** ** These allow arbitrary mappings in the config file. The idea ** (albeit not the implementation) comes from IDA sendmail. */ #define MAPCLASS struct _mapclass #define MAP struct _map #define MAXMAPACTIONS 5 /* size of map_actions array */ /* ** An actual map. */ MAP { MAPCLASS *map_class; /* the class of this map */ MAPCLASS *map_orgclass; /* the original class of this map */ char *map_mname; /* name of this map */ long map_mflags; /* flags, see below */ char *map_file; /* the (nominal) filename */ ARBPTR_T map_db1; /* the open database ptr */ ARBPTR_T map_db2; /* an "extra" database pointer */ char *map_keycolnm; /* key column name */ char *map_valcolnm; /* value column name */ unsigned char map_keycolno; /* key column number */ unsigned char map_valcolno; /* value column number */ char map_coldelim; /* column delimiter */ char map_spacesub; /* spacesub */ char *map_app; /* to append to successful matches */ char *map_tapp; /* to append to "tempfail" matches */ char *map_domain; /* the (nominal) NIS domain */ char *map_rebuild; /* program to run to do auto-rebuild */ time_t map_mtime; /* last database modification time */ time_t map_timeout; /* timeout for map accesses */ int map_retry; /* # of retries for map accesses */ pid_t map_pid; /* PID of process which opened map */ int map_lockfd; /* auxiliary lock file descriptor */ MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ }; /* bit values for map_mflags */ #define MF_VALID 0x00000001 /* this entry is valid */ #define MF_INCLNULL 0x00000002 /* include null byte in key */ #define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ #define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ #define MF_MATCHONLY 0x00000010 /* don't use the map value */ #define MF_OPEN 0x00000020 /* this entry is open */ #define MF_WRITABLE 0x00000040 /* open for writing */ #define MF_ALIAS 0x00000080 /* this is an alias file */ #define MF_TRY0NULL 0x00000100 /* try with no null byte */ #define MF_TRY1NULL 0x00000200 /* try with the null byte */ #define MF_LOCKED 0x00000400 /* this map is currently locked */ #define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ #define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ #define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ #define MF_IMPL_CDB 0x00004000 /* implicit: underlying CDB database */ #define MF_APPEND 0x00008000 /* append new entry on rebuild */ #define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ #define MF_NODEFER 0x00020000 /* don't defer if map lookup fails */ #define MF_REGEX_NOT 0x00040000 /* regular expression negation */ #define MF_DEFER 0x00080000 /* don't lookup map in defer mode */ #define MF_SINGLEMATCH 0x00100000 /* successful only if match one key */ #define MF_SINGLEDN 0x00200000 /* only one match, but multi values */ #define MF_FILECLASS 0x00400000 /* this is a file class map */ #define MF_OPENBOGUS 0x00800000 /* open failed, don't call map_close */ #define MF_CLOSING 0x01000000 /* map is being closed */ #define MF_SECURE 0x02000000 /* DNSSEC result is "secure" */ #define MF_KEEPXFMT 0x04000000 /* keep [x] format */ #define DYNOPENMAP(map) \ do \ { \ if (!bitset(MF_OPEN, (map)->map_mflags)) \ { \ if (!openmap(map)) \ return NULL; \ } \ } while (0) /* indices for map_actions */ #define MA_NOTFOUND 0 /* member map returned "not found" */ #define MA_UNAVAIL 1 /* member map is not available */ #define MA_TRYAGAIN 2 /* member map returns temp failure */ /* ** The class of a map -- essentially the functions to call */ MAPCLASS { char *map_cname; /* name of this map class */ char *map_ext; /* extension for database file */ short map_cflags; /* flag bits, see below */ bool (*map_parse)__P((MAP *, char *)); /* argument parsing function */ char *(*map_lookup)__P((MAP *, char *, char **, int *)); /* lookup function */ void (*map_store)__P((MAP *, char *, char *)); /* store function */ bool (*map_open)__P((MAP *, int)); /* open function */ void (*map_close)__P((MAP *)); /* close function */ }; /* bit values for map_cflags */ #define MCF_ALIASOK 0x0001 /* can be used for aliases */ /* #define MCF_ALIASONLY 0x0002 * usable only for aliases */ #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ #define MCF_OPTFILE 0x0008 /* file name is optional */ #define MCF_NOTPERSIST 0x0010 /* don't keep map open all the time */ /* functions */ extern void closemaps __P((bool)); extern bool impl_map_open __P((MAP *, int)); extern void initmaps __P((void)); extern MAP *makemapentry __P((char *)); extern void maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); #if NETINFO extern char *ni_propval __P((char *, char *, char *, char *, int)); #endif extern bool openmap __P((MAP *)); extern int udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); #if USERDB extern void _udbx_close __P((void)); extern char *udbsender __P((char *, SM_RPOOL_T *)); #endif /* ** LDAP related items */ #if LDAPMAP /* struct defining LDAP Auth Methods */ struct lamvalues { char *lam_name; /* name of LDAP auth method */ int lam_code; /* numeric code */ }; /* struct defining LDAP Alias Dereferencing */ struct ladvalues { char *lad_name; /* name of LDAP alias dereferencing method */ int lad_code; /* numeric code */ }; /* struct defining LDAP Search Scope */ struct lssvalues { char *lss_name; /* name of LDAP search scope */ int lss_code; /* numeric code */ }; /* functions */ extern bool ldapmap_parseargs __P((MAP *, char *)); extern void ldapmap_set_defaults __P((char *)); #endif /* LDAPMAP */ /* ** PH related items */ #if PH_MAP # include struct ph_map_struct { char *ph_servers; /* list of ph servers */ char *ph_field_list; /* list of fields to search for match */ PH *ph; /* PH server handle */ int ph_fastclose; /* send "quit" command on close */ time_t ph_timeout; /* timeout interval */ }; typedef struct ph_map_struct PH_MAP_STRUCT; #endif /* PH_MAP */ /* ** Regular UNIX sockaddrs are too small to handle ISO addresses, so ** we are forced to declare a supertype here. */ #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 union bigsockaddr { struct sockaddr sa; /* general version */ # if NETUNIX struct sockaddr_un sunix; /* UNIX family */ # endif # if NETINET struct sockaddr_in sin; /* INET family */ # endif # if NETINET6 struct sockaddr_in6 sin6; /* INET/IPv6 */ # endif # if NETISO struct sockaddr_iso siso; /* ISO family */ # endif # if NETNS struct sockaddr_ns sns; /* XNS family */ # endif # if NETX25 struct sockaddr_x25 sx25; /* X.25 family */ # endif }; # define SOCKADDR union bigsockaddr /* functions */ extern char *anynet_ntoa __P((SOCKADDR *)); # if NETINET6 extern char *anynet_ntop __P((struct in6_addr *, char *, size_t)); extern int anynet_pton __P((int, const char *, void *)); # endif extern char *hostnamebyanyaddr __P((SOCKADDR *)); extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); # if SASL >= 20000 extern bool iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned)); # endif #endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ /* ** Process List (proclist) */ #define NO_PID ((pid_t) 0) #ifndef PROC_LIST_SEG # define PROC_LIST_SEG 32 /* number of pids to alloc at a time */ #endif /* process types */ #define PROC_NONE 0 #define PROC_DAEMON 1 #define PROC_DAEMON_CHILD 2 #define PROC_QUEUE 3 #define PROC_QUEUE_CHILD 3 #define PROC_CONTROL 4 #define PROC_CONTROL_CHILD 5 #define PROC_QM 6 /* functions */ extern void proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *)); extern void proc_list_clear __P((void)); extern void proc_list_display __P((SM_FILE_T *, char *)); extern void proc_list_drop __P((pid_t, int, int *)); extern void proc_list_probe __P((void)); extern void proc_list_set __P((pid_t, char *)); extern void proc_list_signal __P((int, int)); /* ** Symbol table definitions */ struct symtab { char *s_name; /* name to be entered */ short s_symtype; /* general type (see below) */ struct symtab *s_next; /* pointer to next in chain */ union { BITMAP256 sv_class; /* bit-map of word classes */ MAILER *sv_mailer; /* pointer to mailer */ char *sv_alias; /* alias */ MAPCLASS sv_mapclass; /* mapping function class */ MAP sv_map; /* mapping function */ HOSTSIG_T sv_hostsig; /* host signature */ MCI sv_mci; /* mailer connection info */ NAMECANON sv_namecanon; /* canonical name cache */ int sv_macro; /* macro name => id mapping */ int sv_ruleset; /* ruleset index */ struct hdrinfo sv_header; /* header metainfo */ char *sv_service[MAXMAPSTACK]; /* service switch */ #if LDAPMAP MAP *sv_lmap; /* Maps for LDAP connection */ #endif #if SOCKETMAP MAP *sv_socketmap; /* Maps for SOCKET connection */ #endif #if MILTER struct milter *sv_milter; /* milter filter name */ #endif QUEUEGRP *sv_queue; /* pointer to queue */ #if DANE dane_tlsa_P sv_tlsa; /* pointer to TLSA RRs */ #endif } s_value; }; typedef struct symtab STAB; /* symbol types */ #define ST_UNDEF 0 /* undefined type */ #define ST_CLASS 1 /* class map */ /* #define ST_unused 2 UNUSED */ #define ST_MAILER 3 /* a mailer header */ #define ST_ALIAS 4 /* an alias */ #define ST_MAPCLASS 5 /* mapping function class */ #define ST_MAP 6 /* mapping function */ #define ST_HOSTSIG 7 /* host signature */ #define ST_NAMECANON 8 /* cached canonical name */ #define ST_MACRO 9 /* macro name to id mapping */ #define ST_RULESET 10 /* ruleset index */ #define ST_SERVICE 11 /* service switch entry */ #define ST_HEADER 12 /* special header flags */ #if LDAPMAP # define ST_LMAP 13 /* List head of maps for LDAP connection */ #endif #if MILTER # define ST_MILTER 14 /* milter filter */ #endif #define ST_QUEUE 15 /* a queue entry */ #if SOCKETMAP # define ST_SOCKETMAP 16 /* List head of maps for SOCKET connection */ #endif #if DANE # define ST_TLSA_RR 17 /* cached TLSA RRs */ #endif /* This entry must be last */ #define ST_MCI 18 /* mailer connection info (offset) */ #define s_class s_value.sv_class #define s_mailer s_value.sv_mailer #define s_alias s_value.sv_alias #define s_mci s_value.sv_mci #define s_mapclass s_value.sv_mapclass #define s_hostsig s_value.sv_hostsig #define s_map s_value.sv_map #define s_namecanon s_value.sv_namecanon #define s_macro s_value.sv_macro #define s_ruleset s_value.sv_ruleset #define s_service s_value.sv_service #define s_header s_value.sv_header #if LDAPMAP # define s_lmap s_value.sv_lmap #endif #if SOCKETMAP # define s_socketmap s_value.sv_socketmap #endif #if MILTER # define s_milter s_value.sv_milter #endif #define s_quegrp s_value.sv_queue #if DANE # define s_tlsa s_value.sv_tlsa #endif /* opcodes to stab */ #define ST_FIND 0 /* find entry */ #define ST_ENTER 1 /* enter if not there */ /* functions */ extern STAB *stab __P((char *, int, int)); extern void stabapply __P((void (*)(STAB *, int), int)); /* ** Operation, send, error, and MIME modes ** ** The operation mode describes the basic operation of sendmail. ** This can be set from the command line, and is "send mail" by ** default. ** ** The send mode tells how to send mail. It can be set in the ** configuration file. Its setting determines how quickly the ** mail will be delivered versus the load on your system. If the ** -v (verbose) flag is given, it will be forced to SM_DELIVER ** mode. ** ** The error mode tells how to return errors. */ #define MD_DELIVER 'm' /* be a mail sender */ #define MD_SMTP 's' /* run SMTP on standard input */ #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ #define MD_DAEMON 'd' /* run as a daemon */ #define MD_FGDAEMON 'D' /* run daemon in foreground */ #define MD_LOCAL 'l' /* like daemon, but localhost only */ #define MD_VERIFY 'v' /* verify: don't collect or deliver */ #define MD_TEST 't' /* test mode: resolve addrs only */ #define MD_INITALIAS 'i' /* initialize alias database */ #define MD_PRINT 'p' /* print the queue */ #define MD_PRINTNQE 'P' /* print number of entries in queue */ #define MD_FREEZE 'z' /* freeze the configuration file */ #define MD_HOSTSTAT 'h' /* print persistent host stat info */ #define MD_PURGESTAT 'H' /* purge persistent host stat info */ #define MD_QUEUERUN 'q' /* queue run */ #define MD_CHECKCONFIG 'C' /* check configuration file */ #define MD_SHOWCONFIG 'O' /* show cf options */ #if _FFR_LOCAL_DAEMON EXTERN bool LocalDaemon; # if NETINET6 EXTERN bool V6LoopbackAddrFound; /* found an IPv6 loopback address */ # define SETV6LOOPBACKADDRFOUND(sa) \ do \ { \ if (isloopback(sa)) \ V6LoopbackAddrFound = true; \ } while (0) # endif /* NETINET6 */ #else /* _FFR_LOCAL_DAEMON */ # define LocalDaemon false # define V6LoopbackAddrFound false # define SETV6LOOPBACKADDRFOUND(sa) #endif /* _FFR_LOCAL_DAEMON */ /* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */ /* values for e_sendmode -- send modes */ #define SM_DELIVER 'i' /* interactive delivery */ #if _FFR_PROXY # define SM_PROXY_REQ 's' /* synchronous mode requested */ # define SM_PROXY 'S' /* synchronous mode activated */ #endif #define SM_FORK 'b' /* deliver in background */ #if _FFR_DM_ONE # define SM_DM_ONE 'o' /* deliver first TA in background, then queue */ #endif #if _FFR_DMTRIGGER # define SM_TRIGGER 't' /* queue and tell "queue manager" */ # define IS_SM_TRIGGER(m) ((m) == SM_TRIGGER) #else # define IS_SM_TRIGGER(m) false #endif #define SM_QUEUE 'q' /* queue, don't deliver */ #define SM_DEFER 'd' /* defer map lookups as well as queue */ #define SM_VERIFY 'v' /* verify only (used internally) */ #define DM_NOTSET (-1) /* DeliveryMode (per daemon) option not set */ #if _FFR_PROXY # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER || (m) == SM_PROXY_REQ || (m) == SM_PROXY) #else # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER) #endif #define WILL_BE_QUEUED(m) ((m) == SM_QUEUE || (m) == SM_DEFER || IS_SM_TRIGGER(m)) /* used only as a parameter to sendall */ #define SM_DEFAULT '\0' /* unspecified, use SendMode */ /* functions */ extern void set_delivery_mode __P((int, ENVELOPE *)); /* values for e_errormode -- error handling modes */ #define EM_PRINT 'p' /* print errors */ #define EM_MAIL 'm' /* mail back errors */ #define EM_WRITE 'w' /* write back errors */ #define EM_BERKNET 'e' /* special berknet processing */ #define EM_QUIET 'q' /* don't print messages (stat only) */ /* bit values for MimeMode */ #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ /* how to handle messages without any recipient addresses */ #define NRA_NO_ACTION 0 /* just leave it as is */ #define NRA_ADD_TO 1 /* add To: header */ #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ #define NRA_ADD_BCC 3 /* add empty Bcc: header */ #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ /* flags to putxline */ #define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ #define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ #define PXLF_STRIP8BIT 0x0002 /* strip 8th bit */ #define PXLF_HEADER 0x0004 /* map newlines in headers */ #define PXLF_NOADDEOL 0x0008 /* if EOL not present, don't add one */ #define PXLF_STRIPMQUOTE 0x0010 /* strip METAQUOTEs */ /* ** Privacy flags ** These are bit values for the PrivacyFlags word. */ #define PRIV_PUBLIC 0 /* what have I got to hide? */ #define PRIV_NEEDMAILHELO 0x00000001 /* insist on HELO for MAIL */ #define PRIV_NEEDEXPNHELO 0x00000002 /* insist on HELO for EXPN */ #define PRIV_NEEDVRFYHELO 0x00000004 /* insist on HELO for VRFY */ #define PRIV_NOEXPN 0x00000008 /* disallow EXPN command */ #define PRIV_NOVRFY 0x00000010 /* disallow VRFY command */ #define PRIV_AUTHWARNINGS 0x00000020 /* flag possible auth probs */ #define PRIV_NOVERB 0x00000040 /* disallow VERB command */ #define PRIV_RESTRICTMAILQ 0x00010000 /* restrict mailq command */ #define PRIV_RESTRICTQRUN 0x00020000 /* restrict queue run */ #define PRIV_RESTRICTEXPAND 0x00040000 /* restrict alias/forward expansion */ #define PRIV_NOETRN 0x00080000 /* disallow ETRN command */ #define PRIV_NOBODYRETN 0x00100000 /* do not return bodies on bounces */ #define PRIV_NORECEIPTS 0x00200000 /* disallow return receipts */ #define PRIV_NOACTUALRECIPIENT 0x00400000 /* no X-Actual-Recipient in DSNs */ #define PRIV_NOREFLECTION 0x00800000 /* do not show original command */ /* don't give no info, anyway, anyhow (in the main SMTP transaction) */ #define PRIV_GOAWAY (0x0000ffff|PRIV_NOREFLECTION) /* struct defining such things */ struct prival { char *pv_name; /* name of privacy flag */ unsigned long pv_flag; /* numeric level */ }; EXTERN unsigned long PrivacyFlags; /* privacy flags */ /* ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. */ #define RF_SENDERADDR 0x001 /* this is a sender address */ #define RF_HEADERADDR 0x002 /* this is a header address */ #define RF_CANONICAL 0x004 /* strip comment information */ #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ #define RF_COPYPARSE 0x010 /* copy parsed user & host */ #define RF_COPYPADDR 0x020 /* copy print address */ #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) #define RF_COPYNONE 0 #define RF_RM_ADDR 0x040 /* address to be removed */ #define RF_IS_EXT 0x100 /* address is in external format */ /* ** Flags passed to rscheck */ #define RSF_RMCOMM 0x0001 /* strip comments */ #define RSF_UNSTRUCTURED 0x0002 /* unstructured, ignore syntax errors */ #define RSF_COUNT 0x0004 /* count rejections (statistics)? */ #define RSF_ADDR 0x0008 /* reassemble address */ #define RSF_STRING 0x0010 /* reassemble address as string */ /* ** Flags passed to mime8to7 and putheader. */ #define M87F_OUTER 0 /* outer context */ #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ #define M87F_DIGEST 0x0002 /* processing multipart/digest */ #define M87F_NO8TO7 0x0004 /* don't do 8->7 bit conversions */ /* functions */ extern bool mime7to8 __P((MCI *, HDR *, ENVELOPE *)); extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int)); /* ** Flags passed to returntosender. */ #define RTSF_NO_BODY 0 /* send headers only */ #define RTSF_SEND_BODY 0x0001 /* include body of message in return */ #define RTSF_PM_BOUNCE 0x0002 /* this is a postmaster bounce */ /* functions */ extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); /* ** Mail Filters (milter) */ /* ** 32-bit type used by milter ** (needed by libmilter even if MILTER isn't defined) */ typedef SM_INT32 mi_int32; #if MILTER # define SMFTO_WRITE 0 /* Timeout for sending information */ # define SMFTO_READ 1 /* Timeout waiting for a response */ # define SMFTO_EOM 2 /* Timeout for ACK/NAK to EOM */ # define SMFTO_CONNECT 3 /* Timeout for connect() */ # define SMFTO_NUM_TO 4 /* Total number of timeouts */ struct milter { char *mf_name; /* filter name */ BITMAP256 mf_flags; /* MTA flags */ mi_int32 mf_fvers; /* filter version */ mi_int32 mf_fflags; /* filter flags */ mi_int32 mf_pflags; /* protocol flags */ char *mf_conn; /* connection info */ int mf_sock; /* connected socket */ char mf_state; /* state of filter */ char mf_lflags; /* "local" flags */ int mf_idx; /* milter number (index) */ time_t mf_timeout[SMFTO_NUM_TO]; /* timeouts */ # if _FFR_MILTER_CHECK /* for testing only */ mi_int32 mf_mta_prot_version; mi_int32 mf_mta_prot_flags; mi_int32 mf_mta_actions; # endif /* _FFR_MILTER_CHECK */ }; # define MI_LFL_NONE 0x00000000 # define MI_LFLAGS_SYM(st) (1 << (st)) /* has its own symlist for stage st */ struct milters { mi_int32 mis_flags; /* filter flags */ }; typedef struct milters milters_T; # define MIS_FL_NONE 0x00000000 /* no requirements... */ # define MIS_FL_DEL_RCPT 0x00000001 /* can delete rcpt */ # define MIS_FL_REJ_RCPT 0x00000002 /* can reject rcpt */ /* MTA flags */ # define SMF_REJECT 'R' /* Reject connection on filter fail */ # define SMF_TEMPFAIL 'T' /* tempfail connection on failure */ # define SMF_TEMPDROP '4' /* 421 connection on failure */ EXTERN struct milter *InputFilters[MAXFILTERS]; EXTERN char *InputFilterList; EXTERN int MilterLogLevel; /* functions */ extern void setup_daemon_milters __P((void)); #endif /* MILTER */ /* ** Vendor codes ** ** Vendors can customize sendmail to add special behaviour, ** generally for back compatibility. Ideally, this should ** be set up in the .cf file using the "V" command. However, ** it's quite reasonable for some vendors to want the default ** be their old version; this can be set using ** -DVENDOR_DEFAULT=VENDOR_xxx ** in the Makefile. ** ** Vendors should apply to sendmail-YYYY@support.sendmail.org ** (replace YYYY with the current year) ** for unique vendor codes. */ #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ #define VENDOR_SUN 2 /* Sun-native configuration file */ #define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ #define VENDOR_IBM 4 /* IBM specific config syntax */ #define VENDOR_SENDMAIL 5 /* Proofpoint, Inc. specific config syntax */ #define VENDOR_DEC 6 /* Compaq, DEC, Digital */ /* prototypes for vendor-specific hook routines */ extern void vendor_daemon_setup __P((ENVELOPE *)); extern void vendor_set_uid __P((UID_T)); /* ** Terminal escape codes. ** ** To make debugging output clearer. */ struct termescape { char *te_rv_on; /* turn reverse-video on */ char *te_under_on; /* turn underlining on */ char *te_normal; /* revert to normal output */ }; /* ** Additional definitions */ /* ** d_flags, see daemon.c ** general rule: lower case: required, upper case: No */ #define D_AUTHREQ 'a' /* authentication required */ #define D_BINDIF 'b' /* use if_addr for outgoing connection */ #define D_CANONREQ 'c' /* canonification required (cf) */ #define D_IFNHELO 'h' /* use if name for HELO */ #define D_FQMAIL 'f' /* fq sender address required (cf) */ #define D_FQRCPT 'r' /* fq recipient address required (cf) */ #define D_SMTPS 's' /* SMTP over SSL (smtps) */ #define D_UNQUALOK 'u' /* unqualified address is ok (cf) */ #define D_NOAUTH 'A' /* no AUTH */ #define D_NOCANON 'C' /* no canonification (cf) */ #define D_NODANE 'D' /* no DANE (client) */ #define D_NOETRN 'E' /* no ETRN (MSA) */ #define D_NOSTS 'M' /* no MTA-STS (client) */ #define D_NOTLS 'S' /* don't use STARTTLS */ #define D_ETRNONLY ((char)0x01) /* allow only ETRN (disk low) */ #define D_OPTIONAL 'O' /* optional socket */ #define D_DISABLE ((char)0x02) /* optional socket disabled */ #define D_ISSET ((char)0x03) /* this client struct is set */ #if _FFR_XCNCT #define D_XCNCT ((char)0x04) /* X-Connect was used */ #define D_XCNCT_M ((char)0x05) /* X-Connect was used + "forged" */ #endif /* ** Queue related items */ /* queue file names */ #define ANYQFL_LETTER '?' #define QUARQF_LETTER 'h' #define DATAFL_LETTER 'd' #define XSCRPT_LETTER 'x' #define NORMQF_LETTER 'q' #define NEWQFL_LETTER 't' # define TEMPQF_LETTER 'T' # define LOSEQF_LETTER 'Q' /* queue sort order */ #define QSO_BYPRIORITY 0 /* sort by message priority */ #define QSO_BYHOST 1 /* sort by first host name */ #define QSO_BYTIME 2 /* sort by submission time */ #define QSO_BYFILENAME 3 /* sort by file name only */ #define QSO_RANDOM 4 /* sort in random order */ #define QSO_BYMODTIME 5 /* sort by modification time */ #define QSO_NONE 6 /* do not sort */ #if _FFR_RHS # define QSO_BYSHUFFLE 7 /* sort by shuffled host name */ #endif #define NOQGRP (-1) /* no queue group (yet) */ #define ENVQGRP (-2) /* use queue group of envelope */ #define NOAQGRP (-3) /* no queue group in addr (yet) */ #define ISVALIDQGRP(x) ((x) >= 0) /* valid queue group? */ #define NOQDIR (-1) /* no queue directory (yet) */ #define ENVQDIR (-2) /* use queue directory of envelope */ #define NOAQDIR (-3) /* no queue directory in addr (yet) */ #define ISVALIDQDIR(x) ((x) >= 0) /* valid queue directory? */ #define RS_QUEUEGROUP "queuegroup" /* ruleset for queue group selection */ #define NOW ((time_t) (-1)) /* queue return: now */ /* SuperSafe values */ #define SAFE_NO 0 /* no fsync(): don't use... */ #define SAFE_INTERACTIVE 1 /* limit fsync() in -odi */ #define SAFE_REALLY 2 /* always fsync() */ #define SAFE_REALLY_POSTMILTER 3 /* fsync() if milter says OK */ /* QueueMode bits */ #define QM_NORMAL ' ' #define QM_QUARANTINE 'Q' #define QM_LOST 'L' /* Queue Run Limitations */ struct queue_char { char *queue_match; /* string to match */ bool queue_negate; /* or not match, if set */ struct queue_char *queue_next; }; /* run_work_group() flags */ #define RWG_NONE 0x0000 #define RWG_FORK 0x0001 #define RWG_VERBOSE 0x0002 #define RWG_PERSISTENT 0x0004 #define RWG_FORCE 0x0008 #define RWG_RUNALL 0x0010 typedef struct queue_char QUEUE_CHAR; EXTERN int volatile CurRunners; /* current number of runner children */ EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ EXTERN int MaxQueueChildren; /* max # of forked queue children */ EXTERN int MaxRunnersPerQueue; /* max # proc's active in queue group */ EXTERN int NiceQueueRun; /* nice queue runs to this value */ EXTERN int NumQueue; /* number of queue groups */ EXTERN int QueueFileMode; /* mode on files in mail queue */ EXTERN int QueueMode; /* which queue items to act upon */ EXTERN int QueueSortOrder; /* queue sorting order algorithm */ EXTERN time_t MinQueueAge; /* min delivery interval */ EXTERN time_t MaxQueueAge; /* max delivery interval */ EXTERN time_t QueueIntvl; /* intervals between running the queue */ EXTERN char *QueueDir; /* location of queue directory */ EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue run to id */ EXTERN QUEUE_CHAR *QueueLimitQuarantine; /* limit queue run to quarantine reason */ EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue run to rcpt */ EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue run to sender */ EXTERN QUEUEGRP *Queue[MAXQUEUEGROUPS + 1]; /* queue groups */ #if _FFR_BOUNCE_QUEUE EXTERN int BounceQueue; #endif /* functions */ extern void assign_queueid __P((ENVELOPE *)); extern ADDRESS *copyqueue __P((ADDRESS *, SM_RPOOL_T *)); extern void cleanup_queues __P((void)); extern bool doqueuerun __P((void)); extern void initsys __P((ENVELOPE *)); extern void loseqfile __P((ENVELOPE *, char *)); extern int name2qid __P((char *)); extern char *qid_printname __P((ENVELOPE *)); extern char *qid_printqueue __P((int, int)); extern void quarantine_queue __P((char *, int)); extern char *queuename __P((ENVELOPE *, int)); extern void queueup __P((ENVELOPE *, unsigned int)); extern bool runqueue __P((bool, bool, bool, bool)); extern bool run_work_group __P((int, int)); extern void set_def_queueval __P((QUEUEGRP *, bool)); extern void setup_queues __P((bool)); extern bool setnewqueue __P((ENVELOPE *)); extern bool shouldqueue __P((long, time_t)); extern void sync_queue_time __P((void)); extern void init_qid_alg __P((void)); extern int print_single_queue __P((int, int)); #if REQUIRES_DIR_FSYNC # define SYNC_DIR(path, panic) sync_dir(path, panic) extern void sync_dir __P((char *, bool)); #else # define SYNC_DIR(path, panic) ((void) 0) #endif #if _FFR_DMTRIGGER extern bool qm __P((void)); #endif /* ** Timeouts ** ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. */ EXTERN struct { /* RFC 1123-specified timeouts [minimum value] */ time_t to_initial; /* initial greeting timeout [5m] */ time_t to_mail; /* MAIL command [5m] */ time_t to_rcpt; /* RCPT command [5m] */ time_t to_datainit; /* DATA initiation [2m] */ time_t to_datablock; /* DATA block [3m] */ time_t to_datafinal; /* DATA completion [10m] */ time_t to_nextcommand; /* next command [5m] */ /* following timeouts are not mentioned in RFC 1123 */ time_t to_iconnect; /* initial connection timeout (first try) */ time_t to_connect; /* initial connection timeout (later tries) */ time_t to_aconnect; /* all connections timeout (MX and A records) */ time_t to_rset; /* RSET command */ time_t to_helo; /* HELO command */ time_t to_quit; /* QUIT command */ time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ time_t to_ident; /* IDENT protocol requests */ time_t to_fileopen; /* opening :include: and .forward files */ time_t to_control; /* process a control socket command */ time_t to_lhlo; /* LMTP: LHLO command */ #if SASL time_t to_auth; /* AUTH dialogue [10m] */ #endif #if STARTTLS time_t to_starttls; /* STARTTLS dialogue [10m] */ #endif /* following are per message */ time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ time_t res_retrans[MAXRESTOTYPES]; /* resolver retransmit */ int res_retry[MAXRESTOTYPES]; /* resolver retry */ } TimeOuts; /* timeout classes for return and warning timeouts */ #define TOC_NORMAL 0 /* normal delivery */ #define TOC_URGENT 1 /* urgent delivery */ #define TOC_NONURGENT 2 /* non-urgent delivery */ #define TOC_DSN 3 /* DSN delivery */ /* resolver timeout specifiers */ #define RES_TO_FIRST 0 /* first attempt */ #define RES_TO_NORMAL 1 /* subsequent attempts */ #define RES_TO_DEFAULT 2 /* default value */ /* functions */ extern void inittimeouts __P((char *, bool)); /* ** Interface probing */ #define DPI_PROBENONE 0 /* Don't probe any interfaces */ #define DPI_PROBEALL 1 /* Probe all interfaces */ #define DPI_SKIPLOOPBACK 2 /* Don't probe loopback interfaces */ /* ** Trace information */ /* macros for debugging flags */ #if NOT_SENDMAIL # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level) #else # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) #endif #define tTdlevel(flag) (tTdvect[flag]) /* variables */ extern unsigned char tTdvect[100]; /* trace vector */ /* ** Miscellaneous information. */ /* ** The "no queue id" queue id for sm_syslog */ #define NOQID "" #define CURHOSTNAME (CurHostName == NULL ? "local" : CurHostName) /* ** Some in-line functions */ /* set exit status */ #define setstat(s) \ do \ { \ if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ ExitStat = s; \ } while (0) #define STRUCTCOPY(s, d) d = s /* ** Update a permanent string variable with a new value. ** The old value is freed, the new value is strdup'ed. ** ** We use sm_pstrdup_x to duplicate the string because it raises ** an exception on error, and because it allocates "permanent storage" ** which is not expected to be freed before process exit. ** The latter is important for memory leak analysis. ** ** If an exception occurs while strdup'ing the new value, ** then the variable remains set to the old value. ** That's why the strdup must occur before we free the old value. */ #define PSTRSET(var, val) \ do \ { \ char *_newval = sm_pstrdup_x(val); \ if (var != NULL) \ sm_free(var); \ var = _newval; \ } while (0) #define _CHECK_RESTART \ do \ { \ if (ShutdownRequest != NULL) \ shutdown_daemon(); \ else if (RestartRequest != NULL) \ restart_daemon(); \ else if (RestartWorkGroup) \ restart_marked_work_groups(); \ } while (0) # define CHECK_RESTART _CHECK_RESTART #define CHK_CUR_RUNNERS(fct, idx, count) \ do \ { \ if (CurRunners < 0) \ { \ if (LogLevel > 3) \ sm_syslog(LOG_ERR, NOQID, \ "%s: CurRunners=%d, i=%d, count=%d, status=should not happen", \ fct, CurRunners, idx, count); \ CurRunners = 0; \ } \ } while (0) /* reply types (text in SmtpMsgBuffer) */ #define XS_DEFAULT 0 /* other commands, e.g., RSET */ #define XS_STARTTLS 1 #define XS_AUTH 2 #define XS_GREET 3 #define XS_EHLO 4 #define XS_MAIL 5 #define XS_RCPT 6 #define XS_DATA 7 #define XS_EOM 8 #define XS_DATA2 9 /* LMTP */ #define XS_QUIT 10 /* ** Global variables. */ #if _FFR_ADD_BCC EXTERN bool AddBcc; #endif #if _FFR_ADDR_TYPE_MODES EXTERN bool AddrTypeModes; /* addr_type: extra "mode" information */ #endif EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ EXTERN bool CheckAliases; /* parse addresses during newaliases */ #if _FFR_QUEUE_RUN_PARANOIA EXTERN int CheckQueueRunners; /* check whether queue runners are OK */ #endif EXTERN bool ColonOkInAddr; /* single colon legal in address */ #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) EXTERN bool ConfigFileRead; /* configuration file has been read */ #endif EXTERN bool DisConnected; /* running with OutChannel redirect to transcript file */ EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ EXTERN bool DontLockReadFiles; /* don't read lock support files */ EXTERN bool DontPruneRoutes; /* don't prune source routes */ EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ EXTERN bool FromFlag; /* if set, "From" person is explicit */ EXTERN bool FipsMode; EXTERN bool GrabTo; /* if set, get recipients from msg */ #if _FFR_EIGHT_BIT_ADDR_OK EXTERN bool EightBitAddrOK; /* we'll let 8-bit addresses through */ #else # define EightBitAddrOK false #endif EXTERN bool HasEightBits; /* has at least one eight bit input byte */ EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ EXTERN bool HoldErrs; /* only output errors to transcript */ EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ EXTERN bool IgnrDot; /* don't let dot end messages */ #if _FFR_KEEPBCC EXTERN bool KeepBcc; #else # define KeepBcc false #endif EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ EXTERN bool MatchGecos; /* look for user names in gecos field */ EXTERN bool MeToo; /* send to the sender also */ EXTERN bool NoAlias; /* suppress aliasing */ EXTERN bool NoConnect; /* don't connect to non-local mailers */ EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ #if _FFR_REJECT_NUL_BYTE EXTERN bool RejectNUL; /* reject NUL input byte? */ #endif #if REQUIRES_DIR_FSYNC EXTERN bool RequiresDirfsync; /* requires fsync() for directory */ #endif EXTERN bool volatile RestartWorkGroup; /* daemon needs to restart some work groups */ EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ EXTERN bool SaveFrom; /* save leading "From" lines */ EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ EXTERN bool SevenBitInput; /* force 7-bit data on input */ EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ EXTERN bool SoftBounce; /* replace 5xy by 4xy (for testing) */ EXTERN bool volatile StopRequest; /* stop sending output */ EXTERN bool SuprErrs; /* set if we are suppressing errors */ EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ EXTERN bool UseMSP; /* mail submission: group writable queue ok? */ EXTERN bool WorkAroundBrokenAAAA; /* some nameservers return SERVFAIL on AAAA queries */ EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ EXTERN bool UseCompressedIPv6Addresses; /* for more specific zero-subnet matches */ EXTERN char InetMode; /* default network for daemon mode */ EXTERN char OpMode; /* operation mode, see below */ EXTERN char SpaceSub; /* substitution for */ #if _FFR_BADRCPT_SHUTDOWN EXTERN int BadRcptShutdown; /* Shutdown connection for rejected RCPTs */ EXTERN int BadRcptShutdownGood; /* above even when there are good RCPTs */ #endif EXTERN int BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */ #if _FFR_RCPTTHROTDELAY EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */ #else # define BadRcptThrottleDelay 1 #endif #if _FFR_TLS_ALTNAMES EXTERN bool SetCertAltnames; #endif EXTERN int CheckpointInterval; /* queue file checkpoint interval */ EXTERN int ConfigLevel; /* config file level */ EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ EXTERN int volatile CurChildren; /* current number of daemonic children */ EXTERN int CurrentLA; /* current load average */ #if DANE EXTERN int Dane; /* DANE */ #endif EXTERN int DefaultNotify; /* default DSN notification flags */ EXTERN int DelayLA; /* load average to delay connections */ EXTERN int DontProbeInterfaces; /* don't probe interfaces for names */ EXTERN int Errors; /* set if errors (local to single pass) */ EXTERN int ExitStat; /* exit status code */ EXTERN int FastSplit; /* fast initial splitting of envelopes */ EXTERN int FileMode; /* mode on files */ EXTERN int LineNumber; /* line number in current input */ EXTERN int LogLevel; /* level of logging to perform */ EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ EXTERN int MaxChildren; /* maximum number of daemonic children */ EXTERN int MaxForwardEntries; /* maximum number of forward entries */ EXTERN int MaxHeadersLength; /* max length of headers */ EXTERN int MaxHopCount; /* max # of hops until bounce */ EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ EXTERN int MaxNOOPCommands; /* max "noise" commands before slowdown */ EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ #if _FFR_MSG_ACCEPT EXTERN char *MessageAccept; /* "Message accepted for delivery" reply text */ #endif EXTERN int MimeMode; /* MIME processing mode */ #if _FFR_MTA_STS EXTERN bool MTASTS; EXTERN char *STS_SNI; #endif EXTERN int NoRecipientAction; #if SM_CONF_SHM EXTERN int Numfilesys; /* number of queue file systems */ EXTERN int *PNumFileSys; # define NumFileSys (*PNumFileSys) #else /* SM_CONF_SHM */ EXTERN int NumFileSys; /* number of queue file systems */ #endif /* SM_CONF_SHM */ EXTERN int QueueLA; /* load average starting forced queueing */ EXTERN int RefuseLA; /* load average refusing connections */ EXTERN time_t RejectLogInterval; /* time btwn log msgs while refusing */ #if _FFR_MEMSTAT EXTERN long QueueLowMem; /* low memory starting forced queueing */ EXTERN long RefuseLowMem; /* low memory refusing connections */ EXTERN char *MemoryResource;/* memory resource to look up */ #endif /* _FFR_MEMSTAT */ EXTERN int SuperSafe; /* be extra careful, even if expensive */ #if USE_EAI EXTERN int SMTPUTF8; /* enable SMTPUTF8 support */ #else # define SMTPUTF8 false #endif EXTERN int VendorCode; /* vendor-specific operation enhancements */ EXTERN int Verbose; /* set if blow-by-blow desired */ EXTERN gid_t DefGid; /* default gid to run as */ EXTERN gid_t RealGid; /* real gid of caller */ EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ EXTERN gid_t EffGid; /* effective gid */ #if SM_CONF_SHM EXTERN key_t ShmKey; /* shared memory key */ EXTERN char *ShmKeyFile; /* shared memory key file */ #endif EXTERN pid_t CurrentPid; /* current process id */ EXTERN pid_t DaemonPid; /* process id of daemon */ EXTERN pid_t PidFilePid; /* daemon/queue runner who wrote pid file */ EXTERN uid_t DefUid; /* default uid to run as */ EXTERN uid_t RealUid; /* real uid of caller */ EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ EXTERN size_t DataFileBufferSize; /* size of buf for in-core data file */ EXTERN time_t DeliverByMin; /* deliver by minimum time */ EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ EXTERN size_t XscriptFileBufferSize; /* size of buf for in-core transcript file */ EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ EXTERN long MaxMessageSize; /* advertised max size we will accept */ EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ EXTERN long QueueFactor; /* slope of queue function */ EXTERN long WkClassFact; /* multiplier for message class -> priority */ EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ EXTERN long WkTimeFact; /* priority offset each time this job is run */ EXTERN char *ControlSocketName; /* control socket filename [control.c] */ EXTERN char *CurHostName; /* current host we are dealing with */ EXTERN char *DeadLetterDrop; /* path to dead letter office */ EXTERN char *DefUser; /* default user to run as (from DefUid) */ EXTERN char *DefaultCharSet; /* default character set for MIME */ EXTERN char *DoubleBounceAddr; /* where to send double bounces */ EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ EXTERN char *FallbackMX; /* fall back MX host */ EXTERN char *FallbackSmartHost; /* fall back smart host */ EXTERN char *FileName; /* name to print on error messages */ EXTERN char *ForwardPath; /* path to search for .forward files */ EXTERN char *HeloName; /* hostname to announce in HELO */ EXTERN char *HelpFile; /* location of SMTP help file */ EXTERN char *HostStatDir; /* location of host status information */ EXTERN char *HostsFile; /* path to /etc/hosts file */ extern char *Mbdb; /* mailbox database type */ EXTERN char *MustQuoteChars; /* quote these characters in phrases */ EXTERN char *MyHostName; /* name of this host for SMTP messages */ EXTERN char *OperatorChars; /* operators (old $o macro) */ EXTERN char *PidFile; /* location of proc id file [conf.c] */ EXTERN char *PostMasterCopy; /* address to get errs cc's */ EXTERN char *ProcTitlePrefix; /* process title prefix */ EXTERN char *RealHostName; /* name of host we are talking to */ EXTERN char *RealUserName; /* real user name of caller */ EXTERN char *volatile RestartRequest;/* a sendmail restart has been requested */ EXTERN char *RunAsUserName; /* user to become for bulk of run */ EXTERN char *SafeFileEnv; /* chroot location for file delivery */ EXTERN char *ServiceSwitchFile; /* backup service switch */ EXTERN char *volatile ShutdownRequest;/* a sendmail shutdown has been requested */ EXTERN bool volatile IntSig; EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ EXTERN char *SmtpPhase; /* current phase in SMTP processing */ EXTERN char SmtpError[MAXLINE]; /* save failure error messages */ EXTERN char *StatFile; /* location of statistics summary */ EXTERN char *TimeZoneSpec; /* override time zone specification */ EXTERN char *UdbSpec; /* user database source spec */ EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ EXTERN char **ExternalEnviron; /* saved user (input) environment */ EXTERN char **SaveArgv; /* argument vector for re-execing */ EXTERN BITMAP256 DontBlameSendmail; /* DontBlameSendmail bits */ EXTERN SM_FILE_T *InChannel; /* input connection */ EXTERN SM_FILE_T *OutChannel; /* output connection */ EXTERN SM_FILE_T *TrafficLogFile; /* file in which to log all traffic */ #if HESIOD EXTERN void *HesiodContext; #endif EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ EXTERN char *RuleSetNames[MAXRWSETS]; /* ruleset number to name */ EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; EXTERN struct rewrite *RewriteRules[MAXRWSETS]; EXTERN struct termescape TermEscape; /* terminal escape codes */ EXTERN SOCKADDR ConnectOnlyTo; /* override connection address (for testing) */ EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */ #if _FFR_BLANKENV_MACV EXTERN int Hacks; /* bit field of run-time enabled "hacks" */ # define H_LOOKUP_MACRO_IN_BLANKENV 0x0001 # define LOOKUP_MACRO_IN_BLANKENV (Hacks & H_LOOKUP_MACRO_IN_BLANKENV) #else # define LOOKUP_MACRO_IN_BLANKENV false #endif EXTERN int ConnectionRateWindowSize; /* ** Declarations of useful functions */ /* Transcript file */ extern void closexscript __P((ENVELOPE *)); extern void openxscript __P((ENVELOPE *)); #if SM_DEVELOPER #define NR_PRINTFLIKE(a, b) PRINTFLIKE(a, b) #else #define NR_PRINTFLIKE(a, b) #endif /* error related */ extern void buffer_errors __P((void)); extern void flush_errors __P((bool)); extern void NR_PRINTFLIKE(1, 2) message __P((const char *, ...)); extern void NR_PRINTFLIKE(1, 2) nmessage __P((const char *, ...)); #if _FFR_PROXY extern void NR_PRINTFLIKE(3, 4) emessage __P((const char *, const char *, const char *, ...)); extern int extsc __P((const char *, int, char *, char *)); #endif extern void NR_PRINTFLIKE(1, 2) syserr __P((const char *, ...)); extern void NR_PRINTFLIKE(2, 3) usrerrenh __P((char *, const char *, ...)); extern void NR_PRINTFLIKE(1, 2) usrerr __P((const char *, ...)); extern int isenhsc __P((const char *, int)); extern int extenhsc __P((const char *, int, char *)); extern int skipaddrhost __P((const char *, bool)); /* alias file */ extern void alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern bool aliaswait __P((MAP *, char *, bool)); extern void forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern void readaliases __P((MAP *, SM_FILE_T *, bool, bool)); extern bool rebuildaliases __P((MAP *, bool)); extern void setalias __P((char *)); /* logging */ extern void logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *, int)); extern void logsender __P((ENVELOPE *, char *)); extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...)); /* SMTP */ extern void giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *)); extern int reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int)); extern void smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile)); #if SASL extern int smtpauth __P((MAILER *, MCI *, ENVELOPE *)); #endif extern void smtpclrse __P((ENVELOPE *)); extern int smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); extern int smtpgetstat __P((MAILER *, MCI *, ENVELOPE *)); extern int smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *)); extern void smtpmessage __P((char *, MAILER *, MCI *, ...)); extern void smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool)); extern char *smtptodsn __P((int)); extern int smtpprobe __P((MCI *)); extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); extern int smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); #define REPLYTYPE(r) ((r) / 100) /* first digit of reply code */ #define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */ #define REPLYMINOR(r) ((r) % 10) /* last digit of reply code */ #define ISSMTPCODE(c) (isascii(c[0]) && isdigit(c[0]) && \ isascii(c[1]) && isdigit(c[1]) && \ isascii(c[2]) && isdigit(c[2])) #define ISSMTPREPLY(c) (ISSMTPCODE(c) && \ (c[3] == ' ' || c[3] == '-' || c[3] == '\0')) #define SM_ISSPACE(c) (isascii(c) && isspace(c)) /* delivery */ extern pid_t dowork __P((int, int, char *, bool, bool, ENVELOPE *)); extern pid_t doworklist __P((ENVELOPE *, bool, bool)); extern int endmailer __P((MCI *, ENVELOPE *, char **)); extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *)); extern void sendall __P((ENVELOPE *, int)); /* stats */ #define STATS_NORMAL 'n' #define STATS_QUARANTINE 'q' #define STATS_REJECT 'r' #define STATS_CONNECT 'c' extern void markstats __P((ENVELOPE *, ADDRESS *, int)); extern void clearstats __P((void)); extern void poststats __P((char *)); /* control socket */ extern void closecontrolsocket __P((bool)); extern void clrcontrol __P((void)); extern void control_command __P((int, ENVELOPE *)); extern int opencontrolsocket __P((void)); #if MILTER /* milter functions */ extern void milter_config __P((char *, struct milter **, int)); extern void milter_setup __P((char *)); extern void milter_set_option __P((char *, char *, bool)); extern bool milter_init __P((ENVELOPE *, char *, milters_T *)); extern void milter_quit __P((ENVELOPE *)); extern void milter_abort __P((ENVELOPE *)); extern char *milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *)); extern char *milter_helo __P((char *, ENVELOPE *, char *)); extern char *milter_envfrom __P((char **, ENVELOPE *, char *)); extern char *milter_data_cmd __P((ENVELOPE *, char *)); extern char *milter_envrcpt __P((char **, ENVELOPE *, char *, bool)); extern char *milter_data __P((ENVELOPE *, char *)); extern char *milter_unknown __P((char *, ENVELOPE *, char *)); #endif /* MILTER */ extern char *addquotes __P((char *, SM_RPOOL_T *)); extern char *arpadate __P((char *)); extern bool atobool __P((char *)); extern int atooct __P((char *)); extern void auth_warning __P((ENVELOPE *, const char *, ...)); extern int blocksignal __P((int)); extern bool bitintersect __P((BITMAP256, BITMAP256)); extern bool bitzerop __P((BITMAP256)); extern int check_bodytype __P((char *)); extern void buildfname __P((char *, char *, char *, int)); extern bool chkclientmodifiers __P((int)); extern bool chkdaemonmodifiers __P((int)); extern int checkcompat __P((ADDRESS *, ENVELOPE *)); #ifdef XDEBUG extern void checkfd012 __P((char *)); extern void checkfdopen __P((int, char *)); #endif extern void checkfds __P((char *)); extern bool chownsafe __P((int, bool)); extern void cleanstrcpy __P((char *, char *, int)); #if SM_CONF_SHM extern void cleanup_shm __P((bool)); #endif extern void close_sendmail_pid __P((void)); extern void clrdaemon __P((void)); extern void collect __P((SM_FILE_T *, bool, HDR **, ENVELOPE *, bool)); extern time_t convtime __P((char *, int)); extern char **copyplist __P((char **, bool, SM_RPOOL_T *)); extern void copy_class __P((int, int)); extern int count_open_connections __P((SOCKADDR *)); extern time_t curtime __P((void)); extern char *defcharset __P((ENVELOPE *)); extern char *denlstring __P((char *, bool, bool)); extern void dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *)); extern void disconnect __P((int, ENVELOPE *)); extern void disk_status __P((SM_FILE_T *, char *)); extern int dns_getcanonname __P((char *, int, bool, int *, int *)); extern pid_t dofork __P((void)); extern int drop_privileges __P((bool)); extern int dsntoexitstat __P((char *)); extern void dumpfd __P((int, bool, bool)); #if SM_HEAP_CHECK extern void dumpstab __P((void)); #endif extern void dumpstate __P((char *)); extern bool enoughdiskspace __P((long, ENVELOPE *)); extern char *exitstat __P((char *)); extern void fatal_error __P((SM_EXC_T *)); extern char *fgetfolded __P((char *, int *, SM_FILE_T *)); extern void fill_fd __P((int, char *)); extern char *find_character __P((char *, int)); extern int finduser __P((char *, bool *, SM_MBDB_T *)); extern void finis __P((bool, bool, volatile int)); extern void fixcrlf __P((char *, bool)); extern long freediskspace __P((const char *, long *)); #if NETINET6 && NEEDSGETIPNODE extern void freehostent __P((struct hostent *)); #endif extern char *get_column __P((char *, int, int, char *, int)); extern char *getauthinfo __P((int, bool *)); extern int getdtsize __P((void)); extern int getla __P((void)); extern char *getmodifiers __P((char *, BITMAP256)); extern BITMAP256 *getrequests __P((ENVELOPE *)); extern char *getvendor __P((int)); extern void help __P((char *, ENVELOPE *)); extern void init_md __P((int, char **)); extern void initdaemon __P((void)); extern void inithostmaps __P((void)); extern void initmacros __P((ENVELOPE *)); extern void initsetproctitle __P((int, char **, char **)); extern void init_vendor_macros __P((ENVELOPE *)); extern SIGFUNC_DECL intsig __P((int)); extern bool isatom __P((const char *)); extern bool isloopback __P((SOCKADDR sa)); extern void load_if_names __P((void)); extern bool lockfile __P((int, char *, char *, int)); extern void log_sendmail_pid __P((ENVELOPE *)); extern void logundelrcpts __P((ENVELOPE *, char *, int, bool)); extern char lower __P((int)); extern char *makelower_a __P((char **, SM_RPOOL_T *)); extern void makelower_buf __P((char *, char *, int)); extern int makeconnection_ds __P((char *, MCI *)); #if DANE extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t, unsigned long *)); #else extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t)); #endif extern void makeworkgroups __P((void)); extern void markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool)); extern void mark_work_group_restart __P((int, int)); extern MCI *mci_new __P((SM_RPOOL_T *)); extern char *munchstring __P((char *, char **, int)); extern struct hostent *myhostname __P((char *, int)); #if SM_HEAP_CHECK > 2 extern char *newstr_tagged __P((const char *, char *, int, int)); # define newstr(str) newstr_tagged(str, "newstr:" __FILE__, __LINE__, SmHeapGroup) #else extern char *newstr __P((const char *)); # define newstr_tagged(str, file, line, grp) newstr(str) #endif #if NISPLUS extern char *nisplus_default_domain __P((void)); /* extern for Sun */ #endif extern bool path_is_dir __P((char *, bool)); extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e)); extern char *pintvl __P((time_t, bool)); extern void printav __P((SM_FILE_T *, char **)); extern void printmailer __P((SM_FILE_T *, MAILER *)); extern void printnqe __P((SM_FILE_T *, char *)); extern void printopenfds __P((bool)); extern void printqueue __P((void)); extern void printrules __P((void)); extern pid_t prog_open __P((char **, int *, ENVELOPE *)); extern bool putline __P((char *, MCI *)); extern bool putxline __P((char *, size_t, MCI *, int)); extern void queueup_macros __P((int, SM_FILE_T *, ENVELOPE *)); extern void readcf __P((char *, bool, ENVELOPE *)); extern SIGFUNC_DECL reapchild __P((int)); extern int releasesignal __P((int)); extern void resetlimits __P((void)); extern void restart_daemon __P((void)); extern void restart_marked_work_groups __P((void)); extern bool rfc822_string __P((char *)); extern void rmexpstab __P((void)); extern bool savemail __P((ENVELOPE *, bool)); extern void seed_random __P((void)); extern void sendtoargv __P((char **, ENVELOPE *)); extern void setclientoptions __P((char *)); extern bool setdaemonoptions __P((char *)); extern void setdefaults __P((ENVELOPE *)); extern void setdefuser __P((void)); extern bool setvendor __P((char *)); extern void set_op_mode __P((int)); extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); extern sigfunc_t setsignal __P((int, sigfunc_t)); extern void sm_setuserenv __P((const char *, const char *)); extern void settime __P((ENVELOPE *)); #if STARTTLS extern int set_tls_rd_tmo __P((int)); #else # define set_tls_rd_tmo(rd_tmo) 0 #endif extern char *sfgets __P((char *, int, SM_FILE_T *, time_t, char *)); extern char *shortenstring __P((const char *, size_t)); extern char *shorten_hostname __P((char [])); extern bool shorten_rfc822_string __P((char *, size_t)); extern void showcfopts __P((void)); extern void shutdown_daemon __P((void)); extern void sm_closefrom __P((int lowest, int highest)); extern void sm_close_on_exec __P((int lowest, int highest)); extern struct hostent *sm_gethostbyname __P((char *, int)); extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); extern void sm_getla __P((void)); extern struct passwd *sm_getpwnam __P((char *)); extern struct passwd *sm_getpwuid __P((UID_T)); extern void sm_setproctitle __P((bool, ENVELOPE *, const char *, ...)); extern pid_t sm_wait __P((int *)); extern bool split_by_recipient __P((ENVELOPE *e)); extern void stop_sendmail __P((void)); extern void stripbackslash __P((char *)); extern bool strreplnonprt __P((char *, int)); extern bool strcontainedin __P((bool, char *, char *)); extern int switch_map_find __P((char *, char *[], short [])); #if STARTTLS extern void tls_set_verify __P((SSL_CTX *, SSL *, bool)); #endif extern bool transienterror __P((int)); extern void truncate_at_delim __P((char *, size_t, int)); extern void tTflag __P((char *)); extern void tTsetup __P((unsigned char *, unsigned int, char *)); extern SIGFUNC_DECL tick __P((int)); extern char *ttypath __P((void)); extern void unlockqueue __P((ENVELOPE *)); #if !HASUNSETENV extern void unsetenv __P((char *)); #endif /* update file system information: +/- some blocks */ #if SM_CONF_SHM extern void upd_qs __P((ENVELOPE *, int, int, char *)); # define updfs(e, count, space, where) upd_qs(e, count, space, where) #else /* SM_CONF_SHM */ # define updfs(e, count, space, where) # define upd_qs(e, count, space, where) #endif /* SM_CONF_SHM */ extern char *username __P((void)); extern bool usershellok __P((char *, char *)); extern void vendor_post_defaults __P((ENVELOPE *)); extern void vendor_pre_defaults __P((ENVELOPE *)); extern int waitfor __P((pid_t)); extern bool writable __P((char *, ADDRESS *, long)); #if SM_HEAP_CHECK # define xalloc(size) xalloc_tagged(size, __FILE__, __LINE__) extern char *xalloc_tagged __P((int, char *, int)); #else extern char *xalloc __P((int)); #endif /* SM_HEAP_CHECK */ #if _FFR_XCNCT extern int xconnect __P((SM_FILE_T *)); #endif extern void xputs __P((SM_FILE_T *, const char *)); extern char *xtextify __P((char *, char *)); extern bool xtextok __P((char *)); extern int xunlink __P((char *)); extern char *xuntextify __P((char *)); #define ASSIGN_IFDIFF(old, new) \ do \ { \ if ((new) != (old)) \ { \ SM_FREE(old); \ old = new; \ new = NULL; \ } \ } while (0); #if USE_EAI extern bool addr_is_ascii __P((const char *)); extern const char *hn2alabel __P((const char *)); #endif #if _FFR_RCPTFLAGS extern bool newmodmailer __P((ADDRESS *, int)); #endif #define SM_CLOSE_FP(fp) \ do \ { \ if ((fp) != NULL) \ { \ (void) sm_io_close((fp), SM_TIME_DEFAULT); \ fp = NULL; \ } \ } while (0); #undef EXTERN #endif /* ! _SENDMAIL_H */