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Diffstat (limited to 'src/sendmail.h')
| -rw-r--r-- | src/sendmail.h | 1514 |
1 files changed, 0 insertions, 1514 deletions
diff --git a/src/sendmail.h b/src/sendmail.h deleted file mode 100644 index ff2697e..0000000 --- a/src/sendmail.h +++ /dev/null @@ -1,1514 +0,0 @@ -/* - * 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 <unistd.h> -# include <stddef.h> -# include <stdlib.h> -# include <stdio.h> -# include <ctype.h> -# include <setjmp.h> -# include <string.h> -# include <time.h> -# include <errno.h> -# ifdef EX_OK -# undef EX_OK /* for SVr4.2 SMP */ -# endif -# include <sysexits.h> - -# include "conf.h" -# include "useful.h" - -# ifdef LOG -# include <syslog.h> -# endif /* LOG */ - -# if NETINET || NETUNIX || NETISO || NETNS || NETX25 -# include <sys/socket.h> -# endif -# if NETUNIX -# include <sys/un.h> -# endif -# if NETINET -# include <netinet/in.h> -# endif -# if NETISO -# include <netiso/iso.h> -# endif -# if NETNS -# include <netns/ns.h> -# endif -# if NETX25 -# include <netccitt/x25.h> -# endif - -#if NAMED_BIND -# include <arpa/nameser.h> -# ifdef NOERROR -# undef NOERROR /* avoid <sys/streams.h> conflict */ -# endif -#endif - -#ifdef HESIOD -# include <hesiod.h> -# 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 <arpa/nameser.h> 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 <lwsp> */ -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)); |