8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
277 lines
8.6 KiB
C
277 lines
8.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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. 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 8.4 (Berkeley) 4/20/95
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*
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* $FreeBSD$
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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 <ctype.h>
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#include <err.h>
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#include <paths.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <time.h>
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#include <unistd.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 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 boffsetof(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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const 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 GREPLYTO 0x10 /* And the Reply-To: line */
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#define GINREPLYTO 0x20 /* The In-Reply-To: line */
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#define GMASK (GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO)
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/* Mask of places from whence */
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#define GNL 0x40 /* Print blank line after */
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#define GDEL 0x80 /* Entity removed from list */
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#define GCOMMA 0x100 /* 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_bcc; /* Blind carbon copies */
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struct name *h_cc; /* Carbon copies string */
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struct name *h_smopts; /* Sendmail options */
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struct name *h_to; /* Dynamic "To:" string */
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char *h_inreplyto; /* Reference */
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char *h_replyto; /* Reply address */
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char *h_subject; /* Subject string */
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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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/*
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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), ftello(stream)); \
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}
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