/* * Copyright (c) 1998 Sendmail, Inc. 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 8.295 (Berkeley) 1/26/1999 */ /* ** SENDMAIL.H -- Global definitions for sendmail. */ # ifdef _DEFINE # define EXTERN # ifndef lint static char SmailSccsId[] = "@(#)sendmail.h 8.295 1/26/1999"; # endif # else /* _DEFINE */ # define EXTERN extern # endif /* _DEFINE */ # include # include # include # include # include # include # include # include # include # ifdef EX_OK # undef EX_OK /* for SVr4.2 SMP */ # endif # include # include "conf.h" # include "useful.h" # ifdef LOG # include # endif /* LOG */ # if NETINET || NETUNIX || NETISO || NETNS || NETX25 # include # endif # if NETUNIX # include # endif # if NETINET # include # endif # if NETISO # include # endif # if NETNS # include # endif # if NETX25 # include # endif #if NAMED_BIND # include # ifdef NOERROR # undef NOERROR /* avoid conflict */ # endif #endif #ifdef HESIOD # include # if !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) # define HESIOD_INIT /* support for the new interface */ EXTERN void *HesiodContext; # endif #endif /* ** 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 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 /* forward references for prototypes */ typedef struct envelope ENVELOPE; typedef struct mailer MAILER; /* ** Data structure for bit maps. ** ** Each bit in this map can be referenced by an ascii character. ** This is 256 possible bits, or 32 8-bit bytes. */ #define BITMAPBYTES 32 /* number of bytes in a bit map */ #define BYTEBITS 8 /* number of bits in a byte */ /* internal macros */ #define _BITWORD(bit) ((bit) / (BYTEBITS * sizeof (int))) #define _BITBIT(bit) (1 << ((bit) % (BYTEBITS * sizeof (int)))) typedef int BITMAP[BITMAPBYTES / sizeof (int)]; /* test bit number N */ #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) /* set bit number N */ #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) /* clear bit number N */ #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) /* clear an entire bit map */ #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) /* ** Utility macros */ /* return number of bytes left in a buffer */ #define SPACELEFT(buf, ptr) (sizeof buf - ((ptr) - buf)) /* ** 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 */ struct mailer *q_mailer; /* mailer to use */ u_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 */ 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_specificity; /* how "specific" this address is */ }; typedef struct address ADDRESS; # define QDONTSEND 0x00000001 /* don't send to this address */ # define QBADADDR 0x00000002 /* this address is verified bad */ # define QGOODUID 0x00000004 /* the q_uid q_gid fields are good */ # define QPRIMARY 0x00000008 /* set from RCPT or argv */ # define QQUEUEUP 0x00000010 /* queue for later transmission */ # define QSENT 0x00000020 /* has been successfully delivered */ # define QNOTREMOTE 0x00000040 /* address not for remote forwarding */ # define QSELFREF 0x00000080 /* this address references itself */ # define QVERIFIED 0x00000100 /* verified, but not expanded */ # define QBOGUSSHELL 0x00000400 /* user has no valid shell listed */ # define QUNSAFEADDR 0x00000800 /* address aquired via unsafe path */ # define QPINGONSUCCESS 0x00001000 /* give return on successful delivery */ # define QPINGONFAILURE 0x00002000 /* give return on failure */ # define QPINGONDELAY 0x00004000 /* give return on message delay */ # define QHASNOTIFY 0x00008000 /* propogate notify parameter */ # define QRELAYED 0x00010000 /* DSN: relayed to non-DSN aware sys */ # define QEXPANDED 0x00020000 /* DSN: undergone list expansion */ # define QDELIVERED 0x00040000 /* DSN: successful final delivery */ # define QDELAYED 0x00080000 /* DSN: message delayed */ # define QTHISPASS 0x40000000 /* temp: address set this pass */ # define QRCPTOK 0x80000000 /* recipient() processed address */ # define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) # define NULLADDR ((ADDRESS *) NULL) /* functions */ extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *)); extern ADDRESS *buildaddr __P((char **, ADDRESS *, int, ENVELOPE *)); extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern char **prescan __P((char *, int, char[], int, char **, u_char *)); extern int rewrite __P((char **, int, int, ENVELOPE *)); extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); extern ADDRESS *getctladdr __P((ADDRESS *)); extern bool sameaddr __P((ADDRESS *, ADDRESS *)); extern bool emptyaddr __P((ADDRESS *)); extern void printaddr __P((ADDRESS *, bool)); extern void cataddr __P((char **, char **, char *, int, int)); extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); /* ** 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 */ BITMAP 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 */ char *m_execdir; /* directory to chdir 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 */ }; /* bits for m_flags */ # define M_ESMTP 'a' /* run Extended SMTP protocol */ # define M_ALIASABLE 'A' /* user can be LHS of an alias */ # define M_BLANKEND 'b' /* ensure blank line at end of message */ # 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 */ # 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 */ /* 'x' CF: include Full-Name: */ # define M_XDOT 'X' /* use hidden-dot algorithm */ # define M_LMTP 'z' /* run Local Mail Transport Protocol */ # define M_NOMX '0' /* turn off MX lookups */ # define M_NONULLS '1' /* don't send null bytes */ # 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 */ EXTERN MAILER *Mailer[MAXMAILERS+1]; EXTERN MAILER *LocalMailer; /* ptr to local mailer */ EXTERN MAILER *ProgMailer; /* ptr to program mailer */ EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ /* ** Information about currently open connections to mailers, or to ** hosts that we have looked up recently. */ # define MCI struct mailer_con_info MCI { short 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 */ off_t mci_contentlen; /* body length for Content-Length: */ long mci_maxsize; /* max size this server will accept */ FILE *mci_in; /* input side of connection */ FILE *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 */ FILE *mci_statfile; /* long term status file */ }; /* flag bits */ #define MCIF_VALID 0x0001 /* this entry is valid */ #define MCIF_TEMP 0x0002 /* don't cache this connection */ #define MCIF_CACHED 0x0004 /* currently in open cache */ #define MCIF_ESMTP 0x0008 /* this host speaks ESMTP */ #define MCIF_EXPN 0x0010 /* EXPN command supported */ #define MCIF_SIZE 0x0020 /* SIZE option supported */ #define MCIF_8BITMIME 0x0040 /* BODY=8BITMIME supported */ #define MCIF_7BIT 0x0080 /* strip this message to 7 bits */ #define MCIF_MULTSTAT 0x0100 /* MAIL11V3: handles MULT status */ #define MCIF_INHEADER 0x0200 /* currently outputing header */ #define MCIF_CVT8TO7 0x0400 /* convert from 8 to 7 bits */ #define MCIF_DSN 0x0800 /* DSN extension supported */ #define MCIF_8BITOK 0x1000 /* OK to send 8 bit characters */ #define MCIF_CVT7TO8 0x2000 /* convert from 7 to 8 bits */ #define MCIF_INMIME 0x4000 /* currently reading MIME header */ /* 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_ACTIVE 3 /* message being sent */ #define MCIS_QUITING 4 /* running quit protocol */ #define MCIS_SSD 5 /* service shutting down */ #define MCIS_ERROR 6 /* I/O error on connection */ /* functions */ extern MCI *mci_get __P((char *, MAILER *)); extern void mci_cache __P((MCI *)); extern void mci_flush __P((bool, MCI *)); extern void mci_dump __P((MCI *, bool)); extern void mci_dump_all __P((bool)); extern MCI **mci_scan __P((MCI *)); extern int mci_traverse_persistent __P((int (*)(), char *)); extern int mci_print_persistent __P((char *, char *)); extern int mci_purge_persistent __P((char *, char *)); extern int mci_lock_host __P((MCI *)); extern void mci_unlock_host __P((MCI *)); extern int mci_lock_host_statfile __P((MCI *)); extern void mci_store_persistent __P((MCI *)); extern int mci_read_persistent __P((FILE *, MCI *)); /* ** 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 */ u_short h_flags; /* status bits, see below */ BITMAP 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 */ u_short 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 0x0001 /* this field terminates header */ # define H_RCPT 0x0002 /* contains recipient addresses */ # define H_DEFAULT 0x0004 /* if another value is found, drop this */ # define H_RESENT 0x0008 /* this address is a "Resent-..." address */ # define H_CHECK 0x0010 /* check h_mflags against m_flags */ # define H_ACHECK 0x0020 /* ditto, but always (not just default) */ # define H_FORCE 0x0040 /* force this field, even if default */ # define H_TRACE 0x0080 /* this field contains trace information */ # define H_FROM 0x0100 /* this is a from-type field */ # define H_VALID 0x0200 /* this field has a validated value */ # define H_RECEIPTTO 0x0400 /* this field has return receipt info */ # define H_ERRORSTO 0x0800 /* this field has error address info */ # define H_CTE 0x1000 /* this field is a content-transfer-encoding */ # define H_CTYPE 0x2000 /* this is a content-type field */ # define H_BCC 0x4000 /* Bcc: header: strip value or delete */ # define H_ENCODABLE 0x8000 /* field can be RFC 1522 encoded */ /* functions */ extern void addheader __P((char *, char *, HDR **)); extern char *hvalue __P((char *, HDR *)); extern void commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *)); extern void put_vanilla_header __P((HDR *, char *, MCI *)); extern void eatheader __P((ENVELOPE *, bool)); extern int chompheader __P((char *, bool, HDR **, ENVELOPE *)); /* ** 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; /* the target person */ 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 */ ADDRESS *e_sendqueue; /* list of message recipients */ ADDRESS *e_errorqueue; /* the queue for error responses */ long e_msgsize; /* size of the message in bytes */ 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 */ void (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); /* function to put header of message */ void (*e_putbody)__P((MCI *, ENVELOPE *, char *)); /* function to put body of message */ struct envelope *e_parent; /* the message this one encloses */ struct envelope *e_sibling; /* the next envelope of interest */ char *e_bodytype; /* type of message body */ FILE *e_dfp; /* temporary file */ char *e_id; /* code for this entry in queue */ FILE *e_xfp; /* transcript file */ FILE *e_lockfp; /* the lock file for this message */ char *e_message; /* error message */ char *e_statmsg; /* stat msg (changes per delivery) */ 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; /* df file's device, for crash recov */ ino_t e_dfino; /* df file's ino, for crash recovery */ char *e_macro[256]; /* macro definitions */ }; /* values for e_flags */ #define EF_OLDSTYLE 0x0000001 /* use spaces (not commas) in hdrs */ #define EF_INQUEUE 0x0000002 /* this message is fully queued */ #define EF_NO_BODY_RETN 0x0000004 /* omit message body on error */ #define EF_CLRQUEUE 0x0000008 /* disk copy is no longer needed */ #define EF_SENDRECEIPT 0x0000010 /* send a return receipt */ #define EF_FATALERRS 0x0000020 /* fatal errors occured */ #define EF_DELETE_BCC 0x0000040 /* delete Bcc: headers entirely */ #define EF_RESPONSE 0x0000080 /* this is an error or return receipt */ #define EF_RESENT 0x0000100 /* this message is being forwarded */ #define EF_VRFYONLY 0x0000200 /* verify only (don't expand aliases) */ #define EF_WARNING 0x0000400 /* warning message has been sent */ #define EF_QUEUERUN 0x0000800 /* this envelope is from queue */ #define EF_GLOBALERRS 0x0001000 /* treat errors as global */ #define EF_PM_NOTIFY 0x0002000 /* send return mail to postmaster */ #define EF_METOO 0x0004000 /* send to me too */ #define EF_LOGSENDER 0x0008000 /* need to log the sender */ #define EF_NORECEIPT 0x0010000 /* suppress all return-receipts */ #define EF_HAS8BIT 0x0020000 /* at least one 8-bit char in body */ #define EF_NL_NOT_EOL 0x0040000 /* don't accept raw NL as EOLine */ #define EF_CRLF_NOT_EOL 0x0080000 /* don't accept CR-LF as EOLine */ #define EF_RET_PARAM 0x0100000 /* RCPT command had RET argument */ #define EF_HAS_DF 0x0200000 /* set when df file is instantiated */ #define EF_IS_MIME 0x0400000 /* really is a MIME message */ #define EF_DONT_MIME 0x0800000 /* never MIME this message */ #define EF_DISCARD 0x1000000 /* discard the message */ EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ /* functions */ extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *)); extern void dropenvelope __P((ENVELOPE *, bool)); extern void clearenvelope __P((ENVELOPE *, bool)); extern void putheader __P((MCI *, HDR *, ENVELOPE *, int)); extern void putbody __P((MCI *, ENVELOPE *, char *)); /* ** 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 struct priority Priorities[MAXPRIORITIES]; EXTERN int NumPriorities; /* pointer into Priorities */ /* ** Rewrite rules. */ struct rewrite { char **r_lhs; /* pattern match */ char **r_rhs; /* substitution value */ struct rewrite *r_next;/* next in chain */ }; EXTERN struct rewrite *RewriteRules[MAXRWSETS]; /* ** 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. */ /* left hand side items */ # define MATCHZANY ((u_char)0220) /* match zero or more tokens */ # define MATCHANY ((u_char)0221) /* match one or more tokens */ # define MATCHONE ((u_char)0222) /* match exactly one token */ # define MATCHCLASS ((u_char)0223) /* match one token in a class */ # define MATCHNCLASS ((u_char)0224) /* match anything not in class */ # define MATCHREPL ((u_char)0225) /* replacement on RHS for above */ /* right hand side items */ # define CANONNET ((u_char)0226) /* canonical net, next token */ # define CANONHOST ((u_char)0227) /* canonical host, next token */ # define CANONUSER ((u_char)0230) /* canonical user, next N tokens */ # define CALLSUBR ((u_char)0231) /* call another rewriting set */ /* conditionals in macros */ # define CONDIF ((u_char)0232) /* conditional if-then */ # define CONDELSE ((u_char)0233) /* conditional else */ # define CONDFI ((u_char)0234) /* conditional fi */ /* bracket characters for host name lookup */ # define HOSTBEGIN ((u_char)0235) /* hostname lookup begin */ # define HOSTEND ((u_char)0236) /* hostname lookup end */ /* bracket characters for generalized lookup */ # define LOOKUPBEGIN ((u_char)0205) /* generalized lookup begin */ # define LOOKUPEND ((u_char)0206) /* generalized lookup end */ /* macro substitution character */ # define MACROEXPAND ((u_char)0201) /* macro expansion */ # define MACRODEXPAND ((u_char)0202) /* deferred macro expansion */ /* to make the code clearer */ # define MATCHZERO CANONHOST /* external <==> internal mapping table */ struct metamac { char metaname; /* external code (after $) */ u_char metaval; /* internal code (as above) */ }; /* values for macros with external names only */ # define MID_OPMODE 0202 /* operation mode */ /* functions */ extern void expand __P((char *, char *, size_t, ENVELOPE *)); extern void define __P((int, char *, ENVELOPE *)); extern char *macvalue __P((int, ENVELOPE *)); extern char *macname __P((int)); extern int macid __P((char *, char **)); /* ** 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 */ }; /* values for nc_flags */ #define NCF_VALID 0x0001 /* entry valid */ /* ** 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 3 /* size of map_actions array */ /* ** An actual map. */ MAP { MAPCLASS *map_class; /* the 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 */ u_char map_keycolno; /* key column number */ u_char map_valcolno; /* value column number */ char map_coldelim; /* column delimiter */ 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 */ pid_t map_pid; /* PID of process which opened map */ int map_lockfd; /* auxiliary lock file descriptor */ short map_specificity; /* specificity of aliases */ 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_UNSAFEDB 0x00004000 /* this map is world writable */ # define MF_APPEND 0x00008000 /* append new entry on rebuiled */ # 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 */ /* 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 */ /* functions */ extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); extern MAP *makemapentry __P((char *)); extern void initmaps __P((bool, ENVELOPE *)); /* ** Symbol table definitions */ struct symtab { char *s_name; /* name to be entered */ short s_type; /* general type (see below) */ short s_len; /* length of this entry */ struct symtab *s_next; /* pointer to next in chain */ union { BITMAP sv_class; /* bit-map of word classes */ ADDRESS *sv_addr; /* pointer to address header */ MAILER *sv_mailer; /* pointer to mailer */ char *sv_alias; /* alias */ MAPCLASS sv_mapclass; /* mapping function class */ MAP sv_map; /* mapping function */ char *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 */ } s_value; }; typedef struct symtab STAB; /* symbol types */ # define ST_UNDEF 0 /* undefined type */ # define ST_CLASS 1 /* class map */ # define ST_ADDRESS 2 /* an address in parsed format */ # 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 */ # define ST_MCI 16 /* mailer connection info (offset) */ # define s_class s_value.sv_class # define s_address s_value.sv_addr # 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 extern STAB *stab __P((char *, int, int)); extern void stabapply __P((void (*)(STAB *, int), int)); /* opcodes to stab */ # define ST_FIND 0 /* find entry */ # define ST_ENTER 1 /* enter if not there */ /* ** STRUCT EVENT -- event queue. ** ** Maintained in sorted order. ** ** We store the pid of the process that set this event to insure ** that when we fork we will not take events intended for the parent. */ struct event { time_t ev_time; /* time of the function call */ void (*ev_func)__P((int)); /* function to call */ int ev_arg; /* argument to ev_func */ int ev_pid; /* pid that set this event */ struct event *ev_link; /* link to next item */ }; typedef struct event EVENT; EXTERN EVENT *EventQueue; /* head of event queue */ /* functions */ extern EVENT *setevent __P((time_t, void(*)(), int)); extern void clrevent __P((EVENT *)); /* ** 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. It's 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. */ EXTERN char OpMode; /* operation mode, see below */ #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_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_FREEZE 'z' /* freeze the configuration file */ #define MD_HOSTSTAT 'h' /* print persistent host stat info */ #define MD_PURGESTAT 'H' /* purge persistent host stat info */ /* values for e_sendmode -- send modes */ #define SM_DELIVER 'i' /* interactive delivery */ #define SM_FORK 'b' /* deliver in background */ #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) */ /* used only as a parameter to sendall */ #define SM_DEFAULT '\0' /* unspecified, use SendMode */ /* 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) */ /* MIME processing mode */ EXTERN int MimeMode; /* 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 */ /* queue sorting order algorithm */ EXTERN int QueueSortOrder; #define QS_BYPRIORITY 0 /* sort by message priority */ #define QS_BYHOST 1 /* sort by first host name */ #define QS_BYTIME 2 /* sort by submission time */ /* how to handle messages without any recipient addresses */ EXTERN int NoRecipientAction; #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 */ /* ** Additional definitions */ /* ** Privacy flags ** These are bit values for the PrivacyFlags word. */ #define PRIV_PUBLIC 0 /* what have I got to hide? */ #define PRIV_NEEDMAILHELO 0x0001 /* insist on HELO for MAIL, at least */ #define PRIV_NEEDEXPNHELO 0x0002 /* insist on HELO for EXPN */ #define PRIV_NEEDVRFYHELO 0x0004 /* insist on HELO for VRFY */ #define PRIV_NOEXPN 0x0008 /* disallow EXPN command entirely */ #define PRIV_NOVRFY 0x0010 /* disallow VRFY command entirely */ #define PRIV_AUTHWARNINGS 0x0020 /* flag possible authorization probs */ #define PRIV_NORECEIPTS 0x0040 /* disallow return receipts */ #define PRIV_NOETRN 0x0080 /* disallow ETRN command entirely */ #define PRIV_NOVERB 0x0100 /* disallow VERB command entirely */ #define PRIV_RESTRICTMAILQ 0x1000 /* restrict mailq command */ #define PRIV_RESTRICTQRUN 0x2000 /* restrict queue run */ #define PRIV_GOAWAY 0x0fff /* don't give no info, anyway, anyhow */ /* struct defining such things */ struct prival { char *pv_name; /* name of privacy flag */ int pv_flag; /* numeric level */ }; /* ** 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 /* ** Flags passed to safefile/safedirpath. */ #define SFF_ANYFILE 0 /* no special restrictions */ #define SFF_MUSTOWN 0x0001 /* user must own this file */ #define SFF_NOSLINK 0x0002 /* file cannot be a symbolic link */ #define SFF_ROOTOK 0x0004 /* ok for root to own this file */ #define SFF_RUNASREALUID 0x0008 /* if no ctladdr, run as real uid */ #define SFF_NOPATHCHECK 0x0010 /* don't bother checking dir path */ #define SFF_SETUIDOK 0x0020 /* setuid files are ok */ #define SFF_CREAT 0x0040 /* ok to create file if necessary */ #define SFF_REGONLY 0x0080 /* regular files only */ #define SFF_SAFEDIRPATH 0x0100 /* no writable directories allowed */ #define SFF_NOHLINK 0x0200 /* file cannot have hard links */ #define SFF_NOWLINK 0x0400 /* links only in non-writable dirs */ #define SFF_NOGWFILES 0x0800 /* disallow world writable files */ #define SFF_NOWWFILES 0x1000 /* disallow group writable files */ /* flags that are actually specific to safeopen/safefopen/dfopen */ #define SFF_OPENASROOT 0x2000 /* open as root instead of real user */ #define SFF_NOLOCK 0x4000 /* don't lock the file */ /* pseudo-flags */ #define SFF_NOLINK (SFF_NOHLINK|SFF_NOSLINK) /* functions */ extern int safefile __P((char *, UID_T, GID_T, char *, int, int, struct stat *)); extern int safedirpath __P((char *, UID_T, GID_T, char *, int)); extern int safeopen __P((char *, int, int, int)); extern FILE *safefopen __P((char *, int, int, int)); extern int dfopen __P((char *, int, int, int)); extern bool filechanged __P((char *, int, struct stat *)); /* ** Flags passed to mime8to7. */ #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 */ /* ** 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 */ /* ** Regular UNIX sockaddrs are too small to handle ISO addresses, so ** we are forced to declare a supertype here. */ # if NETINET || 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 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 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ extern char *hostnamebyanyaddr __P((SOCKADDR *)); extern char *anynet_ntoa __P((SOCKADDR *)); # if DAEMON extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); # endif #endif /* ** 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@CS.Berkeley.EDU 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 /* Sendmail, Inc. specific config syntax */ EXTERN int VendorCode; /* vendor-specific operation enhancements */ /* prototypes for vendor-specific hook routines */ extern void vendor_set_uid __P((UID_T)); extern void vendor_daemon_setup __P((ENVELOPE *)); /* ** DontBlameSendmail options ** ** Hopefully nobody uses these. */ #define DBS_SAFE 0 #define DBS_ASSUMESAFECHOWN 0x00000001 #define DBS_GROUPWRITABLEDIRPATHSAFE 0x00000002 #define DBS_GROUPWRITABLEFORWARDFILESAFE 0x00000004 #define DBS_GROUPWRITABLEINCLUDEFILESAFE 0x00000008 #define DBS_GROUPWRITABLEALIASFILE 0x00000010 #define DBS_WORLDWRITABLEALIASFILE 0x00000020 #define DBS_FORWARDFILEINUNSAFEDIRPATH 0x00000040 #define DBS_MAPINUNSAFEDIRPATH 0x00000080 #define DBS_LINKEDALIASFILEINWRITABLEDIR 0x00000100 #define DBS_LINKEDCLASSFILEINWRITABLEDIR 0x00000200 #define DBS_LINKEDFORWARDFILEINWRITABLEDIR 0x00000400 #define DBS_LINKEDINCLUDEFILEINWRITABLEDIR 0x00000800 #define DBS_LINKEDMAPINWRITABLEDIR 0x00001000 #define DBS_LINKEDSERVICESWITCHFILEINWRITABLEDIR 0x00002000 #define DBS_FILEDELIVERYTOHARDLINK 0x00004000 #define DBS_FILEDELIVERYTOSYMLINK 0x00008000 #define DBS_WRITEMAPTOHARDLINK 0x00010000 #define DBS_WRITEMAPTOSYMLINK 0x00020000 #define DBS_WRITESTATSTOHARDLINK 0x00040000 #define DBS_WRITESTATSTOSYMLINK 0x00080000 #define DBS_FORWARDFILEINGROUPWRITABLEDIRPATH 0x00100000 #define DBS_INCLUDEFILEINGROUPWRITABLEDIRPATH 0x00200000 #define DBS_CLASSFILEINUNSAFEDIRPATH 0x00400000 #define DBS_ERRORHEADERINUNSAFEDIRPATH 0x00800000 #define DBS_HELPFILEINUNSAFEDIRPATH 0x01000000 #define DBS_FORWARDFILEINUNSAFEDIRPATHSAFE 0x02000000 #define DBS_INCLUDEFILEINUNSAFEDIRPATHSAFE 0x04000000 #define DBS_RUNPROGRAMINUNSAFEDIRPATH 0x08000000 #define DBS_RUNWRITABLEPROGRAM 0x10000000 #define DBS_INCLUDEFILEINUNSAFEDIRPATH 0x20000000 /* struct defining such things */ struct dbsval { char *dbs_name; /* name of DontBlameSendmail flag */ long dbs_flag; /* numeric level */ }; EXTERN long DontBlameSendmail; /* DontBlameSendmail option bits */ /* ** Terminal escape codes. ** ** To make debugging output clearer. */ struct termescape { char *te_rv_on; /* turn reverse-video on */ char *te_rv_off; /* turn reverse-video off */ }; EXTERN struct termescape TermEscape; /* ** Error return from inet_addr(3), in case not defined in /usr/include. */ #ifndef INADDR_NONE # define INADDR_NONE 0xffffffff #endif /* ** Global variables. */ EXTERN bool FromFlag; /* if set, "From" person is explicit */ EXTERN bool MeToo; /* send to the sender also */ EXTERN bool IgnrDot; /* don't let dot end messages */ EXTERN bool SaveFrom; /* save leading "From" lines */ EXTERN bool GrabTo; /* if set, get recipients from msg */ EXTERN bool SuprErrs; /* set if we are suppressing errors */ EXTERN bool HoldErrs; /* only output errors to transcript */ EXTERN bool NoConnect; /* don't connect to non-local mailers */ EXTERN bool SuperSafe; /* be extra careful, even if expensive */ EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ EXTERN bool CheckAliases; /* parse addresses during newaliases */ EXTERN bool NoAlias; /* suppress aliasing */ EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ EXTERN bool UseHesiod; /* using Hesiod -- interpret Hesiod errors */ EXTERN bool SevenBitInput; /* force 7-bit data on input */ EXTERN bool HasEightBits; /* has at least one eight bit input byte */ EXTERN bool ConfigFileRead; /* configuration file has been read */ EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ EXTERN FILE *InChannel; /* input connection */ EXTERN FILE *OutChannel; /* output connection */ EXTERN char *RealUserName; /* real user name of caller */ EXTERN uid_t RealUid; /* real uid of caller */ EXTERN gid_t RealGid; /* real gid of caller */ EXTERN uid_t DefUid; /* default uid to run as */ EXTERN gid_t DefGid; /* default gid to run as */ EXTERN char *DefUser; /* default user to run as (from DefUid) */ EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ EXTERN int Verbose; /* set if blow-by-blow desired */ EXTERN int Errors; /* set if errors (local to single pass) */ EXTERN int ExitStat; /* exit status code */ EXTERN int LineNumber; /* line number in current input */ EXTERN int LogLevel; /* level of logging to perform */ EXTERN int FileMode; /* mode on files */ EXTERN int QueueLA; /* load average starting forced queueing */ EXTERN int RefuseLA; /* load average refusing connections are */ EXTERN int CurrentLA; /* current load average */ EXTERN long QueueFactor; /* slope of queue function */ EXTERN time_t QueueIntvl; /* intervals between running the queue */ EXTERN char *HelpFile; /* location of SMTP help file */ EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ EXTERN char *StatFile; /* location of statistics summary */ EXTERN char *QueueDir; /* location of queue directory */ EXTERN char *FileName; /* name to print on error messages */ EXTERN char *SmtpPhase; /* current phase in SMTP processing */ EXTERN char *MyHostName; /* name of this host for SMTP messages */ EXTERN char *RealHostName; /* name of host we are talking to */ EXTERN char *CurHostName; /* current host we are dealing with */ EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ EXTERN bool MatchGecos; /* look for user names in gecos field */ EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ EXTERN bool InChild; /* true if running in an SMTP subprocess */ EXTERN bool DisConnected; /* running with OutChannel redirected to xf */ EXTERN bool ColonOkInAddr; /* single colon legal in address */ EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ EXTERN char SpaceSub; /* substitution for */ EXTERN int PrivacyFlags; /* privacy flags */ EXTERN char *ConfFile; /* location of configuration file [conf.c] */ EXTERN char *PidFile; /* location of proc id file [conf.c] */ EXTERN char *ControlSocketName; /* control socket filename [control.c] */ extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 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 *UdbSpec; /* user database source spec */ EXTERN int MaxHopCount; /* max # of hops until bounce */ EXTERN int ConfigLevel; /* config file level */ EXTERN char *TimeZoneSpec; /* override time zone specification */ EXTERN char *ForwardPath; /* path to search for .forward files */ EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ EXTERN char *FallBackMX; /* fall back MX host */ EXTERN long MaxMessageSize; /* advertised max size we will accept */ EXTERN time_t MinQueueAge; /* min delivery interval */ EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ EXTERN char *SafeFileEnv; /* chroot location for file delivery */ EXTERN char *HostsFile; /* path to /etc/hosts file */ EXTERN char *HostStatDir; /* location of host status information */ EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ EXTERN int MaxChildren; /* maximum number of daemonic children */ EXTERN int CurChildren; /* current number of daemonic children */ EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ EXTERN char *OperatorChars; /* operators (old $o macro) */ EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ EXTERN int DefaultNotify; /* default DSN notification flags */ EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ EXTERN bool UserSubmission; /* initial (user) mail submission */ EXTERN char *RunAsUserName; /* user to become for bulk of run */ EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ EXTERN bool DoQueueRun; /* non-interrupt time queue run needed */ EXTERN u_long ConnectOnlyTo; /* override connection address (for testing) */ EXTERN int MaxHeadersLength; /* max length of headers */ #if _FFR_DSN_RRT_OPTION EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ #endif EXTERN char *DeadLetterDrop; /* path to dead letter office */ EXTERN bool DontProbeInterfaces; /* don't probe interfaces for names */ EXTERN bool ChownAlwaysSafe; /* treat chown(2) as safe */ EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ EXTERN bool DontLockReadFiles; /* don't read lock support files */ EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ EXTERN char *MustQuoteChars; /* quote these characters in phrases */ EXTERN char *ServiceSwitchFile; /* backup service switch */ EXTERN char *DefaultCharSet; /* default character set for MIME */ EXTERN char *PostMasterCopy; /* address to get errs cc's */ EXTERN int CheckpointInterval; /* queue file checkpoint interval */ EXTERN bool DontPruneRoutes; /* don't prune source routes */ EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ EXTERN int MaxMciCache; /* maximum entries in MCI cache */ EXTERN time_t ServiceCacheTime; /* time service switch was cached */ EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ EXTERN FILE *TrafficLogFile; /* file in which to log all traffic */ EXTERN char *DoubleBounceAddr; /* where to send double bounces */ EXTERN char **ExternalEnviron; /* input environment */ EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; /* saved user environment */ EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ extern int errno; /* ** Queue Run Limitations */ struct queue_char { char *queue_match; /* string to match */ struct queue_char *queue_next; }; typedef struct queue_char QUEUE_CHAR; EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue runs to this recipient */ EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue runs to this sender */ EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue runs to this id */ /* ** 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_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 */ /* following are per message */ time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ } 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 */ /* ** Trace information */ /* trace vector and macros for debugging flags */ EXTERN u_char tTdvect[100]; # define tTd(flag, level) (tTdvect[flag] >= level) # define tTdlevel(flag) (tTdvect[flag]) /* ** Miscellaneous information. */ /* ** The "no queue id" queue id for sm_syslog */ #define NOQID "*~*" /* ** Some in-line functions */ /* set exit status */ #define setstat(s) { \ if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ ExitStat = s; \ } /* make a copy of a string */ #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) #define STRUCTCOPY(s, d) d = s /* ** Declarations of useful functions */ extern char *xalloc __P((int)); extern char *sfgets __P((char *, int, FILE *, time_t, char *)); extern char *queuename __P((ENVELOPE *, int)); extern time_t curtime __P((void)); extern bool transienterror __P((int)); extern char *fgetfolded __P((char *, int, FILE *)); extern char *username __P((void)); extern char *pintvl __P((time_t, bool)); extern bool shouldqueue __P((long, time_t)); extern bool lockfile __P((int, char *, char *, int)); extern char *hostsignature __P((MAILER *, char *, ENVELOPE *)); extern void openxscript __P((ENVELOPE *)); extern void closexscript __P((ENVELOPE *)); extern char *shortenstring __P((const char *, int)); extern bool usershellok __P((char *, char *)); extern char *defcharset __P((ENVELOPE *)); extern bool wordinclass __P((char *, int)); extern char *denlstring __P((char *, bool, bool)); extern void makelower __P((char *)); extern bool rebuildaliases __P((MAP *, bool)); extern void readaliases __P((MAP *, FILE *, bool, bool)); extern void finis __P((bool, volatile int)); extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); extern void xputs __P((const char *)); extern void logsender __P((ENVELOPE *, char *)); extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); extern void setuserenv __P((const char *, const char *)); extern char *getextenv __P((const char *)); extern void disconnect __P((int, ENVELOPE *)); extern void putxline __P((char *, size_t, MCI *, int)); extern void dumpfd __P((int, bool, bool)); extern void makemailer __P((char *)); extern void putfromline __P((MCI *, ENVELOPE *)); extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); extern void setclass __P((int, char *)); extern void inittimeouts __P((char *)); extern void logdelivery __P((MAILER *, MCI *, const char *, ADDRESS *, time_t, ENVELOPE *)); extern void giveresponse __P((int, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *)); extern void buildfname __P((char *, char *, char *, int)); extern void mci_setstat __P((MCI *, int, char *, char *)); extern char *smtptodsn __P((int)); extern int rscheck __P((char *, char *, char *, ENVELOPE *e)); extern void mime7to8 __P((MCI *, HDR *, ENVELOPE *)); extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int)); extern void xfclose __P((FILE *, char *, char *)); extern int switch_map_find __P((char *, char *[], short [])); extern void shorten_hostname __P((char [])); extern int waitfor __P((pid_t)); extern void proc_list_add __P((pid_t, char *)); extern void proc_list_set __P((pid_t, char *)); extern void proc_list_drop __P((pid_t)); extern void proc_list_clear __P((void)); extern void proc_list_display __P((FILE *)); extern void proc_list_probe __P((void)); extern void buffer_errors __P((void)); extern void flush_errors __P((bool)); extern void putline __P((char *, MCI *)); extern bool xtextok __P((char *)); extern char *xtextify __P((char *, char *)); extern char *xuntextify __P((char *)); extern void cleanstrcpy __P((char *, char *, int)); extern int getmxrr __P((char *, char **, bool, int *)); extern int strtorwset __P((char *, char **, int)); extern void printav __P((char **)); extern void printopenfds __P((bool)); extern int endmailer __P((MCI *, ENVELOPE *, char **)); extern void fixcrlf __P((char *, bool)); extern int dofork __P((void)); extern void initsys __P((ENVELOPE *)); extern void collect __P((FILE *, bool, HDR **, ENVELOPE *)); extern void stripquotes __P((char *)); extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); extern void unlockqueue __P((ENVELOPE *)); extern void xunlink __P((char *)); extern bool runqueue __P((bool, bool)); extern int getla __P((void)); extern void sendall __P((ENVELOPE *, int)); extern void queueup __P((ENVELOPE *, bool)); extern void checkfds __P((char *)); extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); extern void markstats __P((ENVELOPE *, ADDRESS *, bool)); extern void poststats __P((char *)); extern char *arpadate __P((char *)); extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile int, ENVELOPE *)); extern void loseqfile __P((ENVELOPE *, char *)); extern int prog_open __P((char **, int *, ENVELOPE *)); extern bool getcanonname __P((char *, int, bool)); extern bool path_is_dir __P((char *, bool)); extern pid_t dowork __P((char *, bool, bool, ENVELOPE *)); extern int drop_privileges __P((bool)); extern void fill_fd __P((int, char *)); extern void closecontrolsocket __P((bool)); extern void clrcontrol __P((void)); extern const char *errstring __P((int)); extern sigfunc_t setsignal __P((int, sigfunc_t)); extern int blocksignal __P((int)); extern int releasesignal __P((int)); extern struct hostent *sm_gethostbyname __P((char *)); extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); extern struct passwd *sm_getpwnam __P((char *)); extern struct passwd *sm_getpwuid __P((UID_T)); extern struct passwd *finduser __P((char *, bool *)); #ifdef XDEBUG extern void checkfdopen __P((int, char *)); extern void checkfd012 __P((char *)); #endif /* ellipsis is a different case though */ extern void auth_warning __P((ENVELOPE *, const char *, ...)); extern void syserr __P((const char *, ...)); extern void usrerr __P((const char *, ...)); extern void message __P((const char *, ...)); extern void nmessage __P((const char *, ...)); extern void setproctitle __P((const char *, ...)); extern void sm_setproctitle __P((bool, const char *, ...)); extern void sm_syslog __P((int, const char *, const char *, ...)); #if !HASSNPRINTF extern int snprintf __P((char *, size_t, const char *, ...)); extern int vsnprintf __P((char *, size_t, const char *, va_list)); #endif extern char *quad_to_string __P((QUAD_T));