277 lines
8.9 KiB
C
277 lines
8.9 KiB
C
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)def.h 8.2 (Berkeley) 3/21/94
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*/
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/*
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* Mail -- a mail program
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*
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* Author: Kurt Shoens (UCB) March 25, 1978
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <signal.h>
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#include <sgtty.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include "pathnames.h"
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#define APPEND /* New mail goes to end of mailbox */
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#define ESCAPE '~' /* Default escape for sending */
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#define NMLSIZE 1024 /* max names in a message list */
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#define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */
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#define HSHSIZE 59 /* Hash size for aliases and vars */
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#define LINESIZE BUFSIZ /* max readable line width */
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#define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */
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#define MAXARGC 1024 /* Maximum list of raw strings */
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#define NOSTR ((char *) 0) /* Null string pointer */
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#define MAXEXP 25 /* Maximum expansion of aliases */
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#define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */
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struct message {
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short m_flag; /* flags, see below */
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short m_offset; /* offset in block of message */
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long m_block; /* block number of this message */
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long m_size; /* Bytes in the message */
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long m_lines; /* Lines in the message */
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};
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/*
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* flag bits.
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*/
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#define MUSED (1<<0) /* entry is used, but this bit isn't */
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#define MDELETED (1<<1) /* entry has been deleted */
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#define MSAVED (1<<2) /* entry has been saved */
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#define MTOUCH (1<<3) /* entry has been noticed */
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#define MPRESERVE (1<<4) /* keep entry in sys mailbox */
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#define MMARK (1<<5) /* message is marked! */
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#define MODIFY (1<<6) /* message has been modified */
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#define MNEW (1<<7) /* message has never been seen */
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#define MREAD (1<<8) /* message has been read sometime. */
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#define MSTATUS (1<<9) /* message status has changed */
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#define MBOX (1<<10) /* Send this to mbox, regardless */
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/*
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* Given a file address, determine the block number it represents.
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*/
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#define blockof(off) ((int) ((off) / 4096))
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#define offsetof(off) ((int) ((off) % 4096))
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#define positionof(block, offset) ((off_t)(block) * 4096 + (offset))
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/*
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* Format of the command description table.
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* The actual table is declared and initialized
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* in lex.c
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*/
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struct cmd {
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char *c_name; /* Name of command */
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int (*c_func)(); /* Implementor of the command */
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short c_argtype; /* Type of arglist (see below) */
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short c_msgflag; /* Required flags of messages */
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short c_msgmask; /* Relevant flags of messages */
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};
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/* Yechh, can't initialize unions */
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#define c_minargs c_msgflag /* Minimum argcount for RAWLIST */
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#define c_maxargs c_msgmask /* Max argcount for RAWLIST */
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/*
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* Argument types.
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*/
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#define MSGLIST 0 /* Message list type */
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#define STRLIST 1 /* A pure string */
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#define RAWLIST 2 /* Shell string list */
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#define NOLIST 3 /* Just plain 0 */
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#define NDMLIST 4 /* Message list, no defaults */
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#define P 040 /* Autoprint dot after command */
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#define I 0100 /* Interactive command bit */
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#define M 0200 /* Legal from send mode bit */
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#define W 0400 /* Illegal when read only bit */
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#define F 01000 /* Is a conditional command */
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#define T 02000 /* Is a transparent command */
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#define R 04000 /* Cannot be called from collect */
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/*
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* Oft-used mask values
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*/
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#define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */
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#define MMNDEL MDELETED /* Look only at deleted bit */
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/*
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* Structure used to return a break down of a head
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* line (hats off to Bill Joy!)
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*/
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struct headline {
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char *l_from; /* The name of the sender */
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char *l_tty; /* His tty string (if any) */
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char *l_date; /* The entire date string */
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};
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#define GTO 1 /* Grab To: line */
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#define GSUBJECT 2 /* Likewise, Subject: line */
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#define GCC 4 /* And the Cc: line */
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#define GBCC 8 /* And also the Bcc: line */
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#define GMASK (GTO|GSUBJECT|GCC|GBCC)
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/* Mask of places from whence */
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#define GNL 16 /* Print blank line after */
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#define GDEL 32 /* Entity removed from list */
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#define GCOMMA 64 /* detract puts in commas */
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/*
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* Structure used to pass about the current
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* state of the user-typed message header.
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*/
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struct header {
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struct name *h_to; /* Dynamic "To:" string */
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char *h_subject; /* Subject string */
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struct name *h_cc; /* Carbon copies string */
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struct name *h_bcc; /* Blind carbon copies */
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struct name *h_smopts; /* Sendmail options */
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};
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/*
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* Structure of namelist nodes used in processing
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* the recipients of mail and aliases and all that
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* kind of stuff.
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*/
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struct name {
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struct name *n_flink; /* Forward link in list. */
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struct name *n_blink; /* Backward list link */
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short n_type; /* From which list it came */
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char *n_name; /* This fella's name */
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};
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/*
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* Structure of a variable node. All variables are
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* kept on a singly-linked list of these, rooted by
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* "variables"
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*/
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struct var {
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struct var *v_link; /* Forward link to next variable */
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char *v_name; /* The variable's name */
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char *v_value; /* And it's current value */
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};
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struct group {
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struct group *ge_link; /* Next person in this group */
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char *ge_name; /* This person's user name */
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};
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struct grouphead {
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struct grouphead *g_link; /* Next grouphead in list */
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char *g_name; /* Name of this group */
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struct group *g_list; /* Users in group. */
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};
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#define NIL ((struct name *) 0) /* The nil pointer for namelists */
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#define NONE ((struct cmd *) 0) /* The nil pointer to command tab */
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#define NOVAR ((struct var *) 0) /* The nil pointer to variables */
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#define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */
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#define NOGE ((struct group *) 0) /* The nil group pointer */
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/*
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* Structure of the hash table of ignored header fields
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*/
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struct ignoretab {
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int i_count; /* Number of entries */
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struct ignore {
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struct ignore *i_link; /* Next ignored field in bucket */
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char *i_field; /* This ignored field */
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} *i_head[HSHSIZE];
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};
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/*
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* Token values returned by the scanner used for argument lists.
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* Also, sizes of scanner-related things.
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*/
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#define TEOL 0 /* End of the command line */
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#define TNUMBER 1 /* A message number */
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#define TDASH 2 /* A simple dash */
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#define TSTRING 3 /* A string (possibly containing -) */
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#define TDOT 4 /* A "." */
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#define TUP 5 /* An "^" */
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#define TDOLLAR 6 /* A "$" */
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#define TSTAR 7 /* A "*" */
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#define TOPEN 8 /* An '(' */
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#define TCLOSE 9 /* A ')' */
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#define TPLUS 10 /* A '+' */
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#define TERROR 11 /* A lexical error */
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#define REGDEP 2 /* Maximum regret depth. */
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#define STRINGLEN 1024 /* Maximum length of string token */
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/*
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* Constants for conditional commands. These describe whether
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* we should be executing stuff or not.
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*/
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#define CANY 0 /* Execute in send or receive mode */
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#define CRCV 1 /* Execute in receive mode only */
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#define CSEND 2 /* Execute in send mode only */
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/*
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* Kludges to handle the change from setexit / reset to setjmp / longjmp
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*/
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#define setexit() setjmp(srbuf)
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#define reset(x) longjmp(srbuf, x)
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/*
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* Truncate a file to the last character written. This is
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* useful just before closing an old file that was opened
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* for read/write.
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*/
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#define trunc(stream) { \
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(void)fflush(stream); \
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(void)ftruncate(fileno(stream), (long)ftell(stream)); \
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}
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