0c3a8314c0
o remove panic() in favor of err(3) and use err(3) functions consistently throughout o use stat(2)'s S_IS* macros rather than S_IF* o [r]index -> str[r]chr o convert some static buffers to dynamic ones o use real tempfiles rather than reopening the same templates o rename some functions that clash with libc o convert wait_status from union to int and use wait(2) status macros o fix multiple potential buffer overflows o fix a few comments o add $FreeBSD$ Reviewed by: nra, nectar (earlier version)
284 lines
9.1 KiB
C
284 lines
9.1 KiB
C
/*
|
|
* Copyright (c) 1980, 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.
|
|
*
|
|
* @(#)def.h 8.2 (Berkeley) 3/21/94
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Mail -- a mail program
|
|
*
|
|
* Author: Kurt Shoens (UCB) March 25, 1978
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <signal.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <string.h>
|
|
#include "pathnames.h"
|
|
|
|
#define APPEND /* New mail goes to end of mailbox */
|
|
|
|
#define ESCAPE '~' /* Default escape for sending */
|
|
#define NMLSIZE 1024 /* max names in a message list */
|
|
#define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */
|
|
#define HSHSIZE 59 /* Hash size for aliases and vars */
|
|
#define LINESIZE BUFSIZ /* max readable line width */
|
|
#define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */
|
|
#define MAXARGC 1024 /* Maximum list of raw strings */
|
|
#define NOSTR ((char *) 0) /* Null string pointer */
|
|
#define MAXEXP 25 /* Maximum expansion of aliases */
|
|
|
|
#define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */
|
|
|
|
struct message {
|
|
short m_flag; /* flags, see below */
|
|
short m_offset; /* offset in block of message */
|
|
long m_block; /* block number of this message */
|
|
long m_size; /* Bytes in the message */
|
|
long m_lines; /* Lines in the message */
|
|
};
|
|
|
|
/*
|
|
* flag bits.
|
|
*/
|
|
|
|
#define MUSED (1<<0) /* entry is used, but this bit isn't */
|
|
#define MDELETED (1<<1) /* entry has been deleted */
|
|
#define MSAVED (1<<2) /* entry has been saved */
|
|
#define MTOUCH (1<<3) /* entry has been noticed */
|
|
#define MPRESERVE (1<<4) /* keep entry in sys mailbox */
|
|
#define MMARK (1<<5) /* message is marked! */
|
|
#define MODIFY (1<<6) /* message has been modified */
|
|
#define MNEW (1<<7) /* message has never been seen */
|
|
#define MREAD (1<<8) /* message has been read sometime. */
|
|
#define MSTATUS (1<<9) /* message status has changed */
|
|
#define MBOX (1<<10) /* Send this to mbox, regardless */
|
|
|
|
/*
|
|
* Given a file address, determine the block number it represents.
|
|
*/
|
|
#define blockof(off) ((int) ((off) / 4096))
|
|
#define boffsetof(off) ((int) ((off) % 4096))
|
|
#define positionof(block, offset) ((off_t)(block) * 4096 + (offset))
|
|
|
|
/*
|
|
* Format of the command description table.
|
|
* The actual table is declared and initialized
|
|
* in lex.c
|
|
*/
|
|
struct cmd {
|
|
char *c_name; /* Name of command */
|
|
int (*c_func)(); /* Implementor of the command */
|
|
short c_argtype; /* Type of arglist (see below) */
|
|
short c_msgflag; /* Required flags of messages */
|
|
short c_msgmask; /* Relevant flags of messages */
|
|
};
|
|
|
|
/* Yechh, can't initialize unions */
|
|
|
|
#define c_minargs c_msgflag /* Minimum argcount for RAWLIST */
|
|
#define c_maxargs c_msgmask /* Max argcount for RAWLIST */
|
|
|
|
/*
|
|
* Argument types.
|
|
*/
|
|
|
|
#define MSGLIST 0 /* Message list type */
|
|
#define STRLIST 1 /* A pure string */
|
|
#define RAWLIST 2 /* Shell string list */
|
|
#define NOLIST 3 /* Just plain 0 */
|
|
#define NDMLIST 4 /* Message list, no defaults */
|
|
|
|
#define P 040 /* Autoprint dot after command */
|
|
#define I 0100 /* Interactive command bit */
|
|
#define M 0200 /* Legal from send mode bit */
|
|
#define W 0400 /* Illegal when read only bit */
|
|
#define F 01000 /* Is a conditional command */
|
|
#define T 02000 /* Is a transparent command */
|
|
#define R 04000 /* Cannot be called from collect */
|
|
|
|
/*
|
|
* Oft-used mask values
|
|
*/
|
|
|
|
#define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */
|
|
#define MMNDEL MDELETED /* Look only at deleted bit */
|
|
|
|
/*
|
|
* Structure used to return a break down of a head
|
|
* line (hats off to Bill Joy!)
|
|
*/
|
|
|
|
struct headline {
|
|
char *l_from; /* The name of the sender */
|
|
char *l_tty; /* His tty string (if any) */
|
|
char *l_date; /* The entire date string */
|
|
};
|
|
|
|
#define GTO 1 /* Grab To: line */
|
|
#define GSUBJECT 2 /* Likewise, Subject: line */
|
|
#define GCC 4 /* And the Cc: line */
|
|
#define GBCC 8 /* And also the Bcc: line */
|
|
#define GREPLYTO 0x10 /* And the Reply-To: line */
|
|
#define GINREPLYTO 0x20 /* The In-Reply-To: line */
|
|
#define GMASK (GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO)
|
|
/* Mask of places from whence */
|
|
|
|
#define GNL 0x40 /* Print blank line after */
|
|
#define GDEL 0x80 /* Entity removed from list */
|
|
#define GCOMMA 0x100 /* detract puts in commas */
|
|
|
|
/*
|
|
* Structure used to pass about the current
|
|
* state of the user-typed message header.
|
|
*/
|
|
|
|
struct header {
|
|
struct name *h_to; /* Dynamic "To:" string */
|
|
char *h_subject; /* Subject string */
|
|
struct name *h_cc; /* Carbon copies string */
|
|
struct name *h_bcc; /* Blind carbon copies */
|
|
char *h_replyto; /* Reply address */
|
|
char *h_inreplyto; /* Reference */
|
|
struct name *h_smopts; /* Sendmail options */
|
|
};
|
|
|
|
/*
|
|
* Structure of namelist nodes used in processing
|
|
* the recipients of mail and aliases and all that
|
|
* kind of stuff.
|
|
*/
|
|
|
|
struct name {
|
|
struct name *n_flink; /* Forward link in list. */
|
|
struct name *n_blink; /* Backward list link */
|
|
short n_type; /* From which list it came */
|
|
char *n_name; /* This fella's name */
|
|
};
|
|
|
|
/*
|
|
* Structure of a variable node. All variables are
|
|
* kept on a singly-linked list of these, rooted by
|
|
* "variables"
|
|
*/
|
|
|
|
struct var {
|
|
struct var *v_link; /* Forward link to next variable */
|
|
char *v_name; /* The variable's name */
|
|
char *v_value; /* And it's current value */
|
|
};
|
|
|
|
struct group {
|
|
struct group *ge_link; /* Next person in this group */
|
|
char *ge_name; /* This person's user name */
|
|
};
|
|
|
|
struct grouphead {
|
|
struct grouphead *g_link; /* Next grouphead in list */
|
|
char *g_name; /* Name of this group */
|
|
struct group *g_list; /* Users in group. */
|
|
};
|
|
|
|
#define NIL ((struct name *) 0) /* The nil pointer for namelists */
|
|
#define NONE ((struct cmd *) 0) /* The nil pointer to command tab */
|
|
#define NOVAR ((struct var *) 0) /* The nil pointer to variables */
|
|
#define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */
|
|
#define NOGE ((struct group *) 0) /* The nil group pointer */
|
|
|
|
/*
|
|
* Structure of the hash table of ignored header fields
|
|
*/
|
|
struct ignoretab {
|
|
int i_count; /* Number of entries */
|
|
struct ignore {
|
|
struct ignore *i_link; /* Next ignored field in bucket */
|
|
char *i_field; /* This ignored field */
|
|
} *i_head[HSHSIZE];
|
|
};
|
|
|
|
/*
|
|
* Token values returned by the scanner used for argument lists.
|
|
* Also, sizes of scanner-related things.
|
|
*/
|
|
|
|
#define TEOL 0 /* End of the command line */
|
|
#define TNUMBER 1 /* A message number */
|
|
#define TDASH 2 /* A simple dash */
|
|
#define TSTRING 3 /* A string (possibly containing -) */
|
|
#define TDOT 4 /* A "." */
|
|
#define TUP 5 /* An "^" */
|
|
#define TDOLLAR 6 /* A "$" */
|
|
#define TSTAR 7 /* A "*" */
|
|
#define TOPEN 8 /* An '(' */
|
|
#define TCLOSE 9 /* A ')' */
|
|
#define TPLUS 10 /* A '+' */
|
|
#define TERROR 11 /* A lexical error */
|
|
|
|
#define REGDEP 2 /* Maximum regret depth. */
|
|
#define STRINGLEN 1024 /* Maximum length of string token */
|
|
|
|
/*
|
|
* Constants for conditional commands. These describe whether
|
|
* we should be executing stuff or not.
|
|
*/
|
|
|
|
#define CANY 0 /* Execute in send or receive mode */
|
|
#define CRCV 1 /* Execute in receive mode only */
|
|
#define CSEND 2 /* Execute in send mode only */
|
|
|
|
/*
|
|
* Kludges to handle the change from setexit / reset to setjmp / longjmp
|
|
*/
|
|
|
|
#define setexit() setjmp(srbuf)
|
|
#define reset(x) longjmp(srbuf, x)
|
|
|
|
/*
|
|
* Truncate a file to the last character written. This is
|
|
* useful just before closing an old file that was opened
|
|
* for read/write.
|
|
*/
|
|
#define trunc(stream) { \
|
|
(void)fflush(stream); \
|
|
(void)ftruncate(fileno(stream), (long)ftell(stream)); \
|
|
}
|