diff options
Diffstat (limited to 'usr.sbin/sendmail/src/sendmail.h')
| -rw-r--r-- | usr.sbin/sendmail/src/sendmail.h | 973 |
1 files changed, 973 insertions, 0 deletions
diff --git a/usr.sbin/sendmail/src/sendmail.h b/usr.sbin/sendmail/src/sendmail.h new file mode 100644 index 0000000..4a42b2c --- /dev/null +++ b/usr.sbin/sendmail/src/sendmail.h @@ -0,0 +1,973 @@ +/* + * Copyright (c) 1983 Eric P. Allman + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)sendmail.h 8.43 (Berkeley) 4/14/94 + */ + +/* +** SENDMAIL.H -- Global definitions for sendmail. +*/ + +# ifdef _DEFINE +# define EXTERN +# ifndef lint +static char SmailSccsId[] = "@(#)sendmail.h 8.43 4/14/94"; +# 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 <sysexits.h> +# include <string.h> +# include <time.h> +# include <errno.h> + +# include "conf.h" +# include "useful.h" + +# ifdef LOG +# include <syslog.h> +# endif /* LOG */ + +# ifdef DAEMON +# include <sys/socket.h> +# endif +# ifdef NETUNIX +# include <sys/un.h> +# endif +# ifdef NETINET +# include <netinet/in.h> +# endif +# ifdef NETISO +# include <netiso/iso.h> +# endif +# ifdef NETNS +# include <netns/ns.h> +# endif +# ifdef NETX25 +# include <netccitt/x25.h> +# endif + + + + +/* +** Data structure for bit maps. +** +** Each bit in this map can be referenced by an ascii character. +** This is 128 possible bits, or 12 8-bit bytes. +*/ + +#define BITMAPBYTES 16 /* 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) + /* +** 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_short 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 */ + time_t q_timeout; /* timeout for this address */ +}; + +typedef struct address ADDRESS; + +# define QDONTSEND 000001 /* don't send to this address */ +# define QBADADDR 000002 /* this address is verified bad */ +# define QGOODUID 000004 /* the q_uid q_gid fields are good */ +# define QPRIMARY 000010 /* set from argv */ +# define QQUEUEUP 000020 /* queue for later transmission */ +# define QSENT 000040 /* has been successfully delivered */ +# define QNOTREMOTE 000100 /* not an address for remote forwarding */ +# define QSELFREF 000200 /* this address references itself */ +# define QVERIFIED 000400 /* verified, but not expanded */ +# define QREPORT 001000 /* report this address in return message */ +# define QBOGUSSHELL 002000 /* this entry has an invalid shell listed */ +# define QUNSAFEADDR 004000 /* address aquired through an unsafe path */ + +# define NULLADDR ((ADDRESS *) NULL) + /* +** 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 */ + BITMAP m_flags; /* status flags, see below */ + short m_mno; /* mailer number internally */ + 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 */ +}; + +typedef struct mailer MAILER; + +/* bits for m_flags */ +# define M_ESMTP 'a' /* run Extended SMTP protocol */ +# 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" */ + /* '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_INTERNAL 'I' /* SMTP to another sendmail site */ +# 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_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ + /* 'P' /* CF: include Return-Path: */ +# 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_RESTR 'S' /* must be daemon to execute */ +# define M_USR_UPPER 'u' /* preserve user case distinction */ +# define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ + /* 'V' /* UIUC: !-relativize all addresses */ + /* 'x' /* CF: include Full-Name: */ +# define M_XDOT 'X' /* use hidden-dot algorithm */ +# define M_7BITS '7' /* use 7-bit path */ + +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 */ + /* +** 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 */ +}; + +extern struct hdrinfo HdrInfo[]; + +/* bits for h_flags and hi_flags */ +# define H_EOH 00001 /* this field terminates header */ +# define H_RCPT 00002 /* contains recipient addresses */ +# define H_DEFAULT 00004 /* if another value is found, drop this */ +# define H_RESENT 00010 /* this address is a "Resent-..." address */ +# define H_CHECK 00020 /* check h_mflags against m_flags */ +# define H_ACHECK 00040 /* ditto, but always (not just default) */ +# define H_FORCE 00100 /* force this field, even if default */ +# define H_TRACE 00200 /* this field contains trace information */ +# define H_FROM 00400 /* this is a from-type field */ +# define H_VALID 01000 /* this field has a validated value */ +# define H_RECEIPTTO 02000 /* this field has return receipt info */ +# define H_ERRORSTO 04000 /* this field has error address info */ + /* +** 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 */ + long mci_maxsize; /* max size this server will accept */ + FILE *mci_in; /* input side of connection */ + FILE *mci_out; /* output side of connection */ + int 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 */ + time_t mci_lastuse; /* last usage time */ +}; + + +/* flag bits */ +#define MCIF_VALID 000001 /* this entry is valid */ +#define MCIF_TEMP 000002 /* don't cache this connection */ +#define MCIF_CACHED 000004 /* currently in open cache */ +#define MCIF_ESMTP 000010 /* this host speaks ESMTP */ +#define MCIF_EXPN 000020 /* EXPN command supported */ +#define MCIF_SIZE 000040 /* SIZE option supported */ +#define MCIF_8BITMIME 000100 /* BODY=8BITMIME supported */ +#define MCIF_7BIT 000200 /* strip this message to 7 bits */ +#define MCIF_MULTSTAT 000400 /* MAIL11V3: handles MULT status */ + +/* 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 */ + /* +** 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. +*/ + +# define ENVELOPE struct envelope + +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 */ + char *e_receiptto; /* return receipt address */ + 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 */ + int (*e_puthdr)__P((MCI *, ENVELOPE *)); + /* function to put header of message */ + int (*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 */ + char *e_df; /* location of temp file */ + 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_macro[128]; /* 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_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_KEEPQUEUE 0x0000040 /* keep queue files always */ +#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 */ + +EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ + /* +** 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 0220 /* match zero or more tokens */ +# define MATCHANY 0221 /* match one or more tokens */ +# define MATCHONE 0222 /* match exactly one token */ +# define MATCHCLASS 0223 /* match one token in a class */ +# define MATCHNCLASS 0224 /* match anything not in class */ +# define MATCHREPL 0225 /* replacement on RHS for above */ + +/* right hand side items */ +# define CANONNET 0226 /* canonical net, next token */ +# define CANONHOST 0227 /* canonical host, next token */ +# define CANONUSER 0230 /* canonical user, next N tokens */ +# define CALLSUBR 0231 /* call another rewriting set */ + +/* conditionals in macros */ +# define CONDIF 0232 /* conditional if-then */ +# define CONDELSE 0233 /* conditional else */ +# define CONDFI 0234 /* conditional fi */ + +/* bracket characters for host name lookup */ +# define HOSTBEGIN 0235 /* hostname lookup begin */ +# define HOSTEND 0236 /* hostname lookup end */ + +/* bracket characters for generalized lookup */ +# define LOOKUPBEGIN 0205 /* generalized lookup begin */ +# define LOOKUPEND 0206 /* generalized lookup end */ + +/* macro substitution character */ +# define MACROEXPAND 0201 /* macro expansion */ +# define MACRODEXPAND 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) */ +}; + /* +** 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 + + +/* +** An actual map. +*/ + +MAP +{ + MAPCLASS *map_class; /* the class of this map */ + char *map_mname; /* name of this map */ + int 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_app; /* to append to successful 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 */ +}; + +/* bit values for map_flags */ +# define MF_VALID 0x0001 /* this entry is valid */ +# define MF_INCLNULL 0x0002 /* include null byte in key */ +# define MF_OPTIONAL 0x0004 /* don't complain if map not found */ +# define MF_NOFOLDCASE 0x0008 /* don't fold case in keys */ +# define MF_MATCHONLY 0x0010 /* don't use the map value */ +# define MF_OPEN 0x0020 /* this entry is open */ +# define MF_WRITABLE 0x0040 /* open for writing */ +# define MF_ALIAS 0x0080 /* this is an alias file */ +# define MF_TRY0NULL 0x0100 /* try with no null byte */ +# define MF_TRY1NULL 0x0200 /* try with the null byte */ +# define MF_LOCKED 0x0400 /* this map is currently locked */ +# define MF_ALIASWAIT 0x0800 /* alias map in aliaswait state */ +# define MF_IMPL_HASH 0x1000 /* implicit: underlying hash database */ +# define MF_IMPL_NDBM 0x2000 /* implicit: underlying NDBM database */ + + +/* +** 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 */ + /* +** Symbol table definitions +*/ + +struct symtab +{ + char *s_name; /* name to be entered */ + char s_type; /* general type (see below) */ + 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 */ + } 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_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 + +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 */ + int (*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 */ + /* +** Operation, send, and error 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_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 */ + + +/* values for e_sendmode -- send modes */ +#define SM_DELIVER 'i' /* interactive delivery */ +#define SM_QUICKD 'j' /* deliver w/o queueing */ +#define SM_FORK 'b' /* deliver in background */ +#define SM_QUEUE 'q' /* queue, don't deliver */ +#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) */ + /* +** 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 00001 /* insist on HELO for MAIL, at least */ +#define PRIV_NEEDEXPNHELO 00002 /* insist on HELO for EXPN */ +#define PRIV_NEEDVRFYHELO 00004 /* insist on HELO for VRFY */ +#define PRIV_NOEXPN 00010 /* disallow EXPN command entirely */ +#define PRIV_NOVRFY 00020 /* disallow VRFY command entirely */ +#define PRIV_AUTHWARNINGS 00040 /* flag possible authorization probs */ +#define PRIV_NORECEIPTS 00100 /* disallow return receipts */ +#define PRIV_RESTRICTMAILQ 01000 /* restrict mailq command */ +#define PRIV_RESTRICTQRUN 02000 /* restrict queue run */ +#define PRIV_GOAWAY 00777 /* 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 0001 /* this is a sender address */ +#define RF_HEADERADDR 0002 /* this is a header address */ +#define RF_CANONICAL 0004 /* strip comment information */ +#define RF_ADDDOMAIN 0010 /* OK to do domain extension */ +#define RF_COPYPARSE 0020 /* copy parsed user & host */ +#define RF_COPYPADDR 0040 /* copy print address */ +#define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) +#define RF_COPYNONE 0 + + +/* +** Flags passed to safefile. +*/ + +#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 */ + + +/* +** Regular UNIX sockaddrs are too small to handle ISO addresses, so +** we are forced to declare a supertype here. +*/ + +union bigsockaddr +{ + struct sockaddr sa; /* general version */ +#ifdef NETUNIX + struct sockaddr_un sunix; /* UNIX family */ +#endif +#ifdef NETINET + struct sockaddr_in sin; /* INET family */ +#endif +#ifdef NETISO + struct sockaddr_iso siso; /* ISO family */ +#endif +#ifdef NETNS + struct sockaddr_ns sns; /* XNS family */ +#endif +#ifdef NETX25 + struct sockaddr_x25 sx25; /* X.25 family */ +#endif +}; + +#define SOCKADDR union bigsockaddr + /* +** 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 Verbose; /* set if blow-by-blow desired */ +EXTERN bool GrabTo; /* if set, get recipients from msg */ +EXTERN bool NoReturn; /* don't return letter to sender */ +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; /* use internet domain name server */ +EXTERN bool SevenBit; /* force 7-bit data */ +EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ +EXTERN FILE *InChannel; /* input connection */ +EXTERN FILE *OutChannel; /* output connection */ +EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ +EXTERN gid_t RealGid; /* when Daemon, 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 int OldUmask; /* umask when sendmail starts up */ +EXTERN int Errors; /* set if errors (local to single pass) */ +EXTERN int ExitStat; /* exit status code */ +EXTERN int AliasLevel; /* depth of aliasing */ +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 SOCKADDR RealHostAddr; /* address 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 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 CheckLoopBack; /* check for loopback on HELO packet */ +EXTERN bool InChild; /* true if running in an SMTP subprocess */ +EXTERN bool DisConnected; /* running with OutChannel redirected to xf */ +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 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 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 BrokenSmtpPeers; /* peers can't handle 2-line greeting */ +EXTERN int MaxMciCache; /* maximum entries in MCI cache */ +EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ +EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */ +EXTERN char *QueueLimitSender; /* limit queue runs to this sender */ +EXTERN char *QueueLimitId; /* limit queue runs to this id */ +EXTERN FILE *TrafficLogFile; /* file in which to log all traffic */ +extern int errno; + + +/* +** 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_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 */ + /* following are per message */ + time_t to_q_return; /* queue return timeout */ + time_t to_q_warning; /* queue warning timeout */ +} TimeOuts; + + +/* +** 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. +*/ + + + +/* +** 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 ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *)); +extern char *xalloc __P((int)); +extern bool sameaddr __P((ADDRESS *, ADDRESS *)); +extern FILE *dfopen __P((char *, int, int)); +extern EVENT *setevent __P((time_t, int(*)(), int)); +extern char *sfgets __P((char *, int, FILE *, time_t, char *)); +extern char *queuename __P((ENVELOPE *, int)); +extern time_t curtime __P(()); +extern bool transienterror __P((int)); +extern const char *errstring __P((int)); +extern void expand __P((char *, char *, char *, ENVELOPE *)); +extern void define __P((int, char *, ENVELOPE *)); +extern char *macvalue __P((int, ENVELOPE *)); +extern char **prescan __P((char *, int, char[], int, char **)); +extern int rewrite __P((char **, int, int, ENVELOPE *)); +extern char *fgetfolded __P((char *, int, FILE *)); +extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, ENVELOPE *)); +extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *)); +extern void dropenvelope __P((ENVELOPE *)); +extern void clearenvelope __P((ENVELOPE *, int)); +extern char *username __P(()); +extern MCI *mci_get __P((char *, MAILER *)); +extern char *pintvl __P((time_t, int)); +extern char *map_rewrite __P((MAP *, char *, int, char **)); +extern ADDRESS *getctladdr __P((ADDRESS *)); +extern char *anynet_ntoa __P((SOCKADDR *)); +extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); +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 sigfunc_t setsignal __P((int, sigfunc_t)); +extern char *shortenstring __P((char *, int)); +extern bool usershellok __P((char *)); +extern void commaize __P((HDR *, char *, int, MCI *, ENVELOPE *)); + +/* ellipsis is a different case though */ +#ifdef __STDC__ +extern void auth_warning(ENVELOPE *, const char *, ...); +extern void syserr(const char *, ...); +extern void usrerr(const char *, ...); +extern void message(const char *, ...); +extern void nmessage(const char *, ...); +#else +extern void auth_warning(); +extern void syserr(); +extern void usrerr(); +extern void message(); +extern void nmessage(); +#endif |
