1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)def.h 8.2 (Berkeley) 3/21/94 34 */ 35 36 /* 37 * Mail -- a mail program 38 * 39 * Author: Kurt Shoens (UCB) March 25, 1978 40 */ 41 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 #include <sys/time.h> 45 46 #include <signal.h> 47 #include <termios.h> 48 #include <unistd.h> 49 #include <stdlib.h> 50 #include <stdio.h> 51 #include <ctype.h> 52 #include <string.h> 53 #include "pathnames.h" 54 55 #define APPEND /* New mail goes to end of mailbox */ 56 57 #define ESCAPE '~' /* Default escape for sending */ 58 #define NMLSIZE 1024 /* max names in a message list */ 59 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ 60 #define HSHSIZE 59 /* Hash size for aliases and vars */ 61 #define LINESIZE BUFSIZ /* max readable line width */ 62 #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ 63 #define MAXARGC 1024 /* Maximum list of raw strings */ 64 #define NOSTR ((char *) 0) /* Null string pointer */ 65 #define MAXEXP 25 /* Maximum expansion of aliases */ 66 67 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 68 69 struct message { 70 short m_flag; /* flags, see below */ 71 short m_offset; /* offset in block of message */ 72 long m_block; /* block number of this message */ 73 long m_size; /* Bytes in the message */ 74 long m_lines; /* Lines in the message */ 75 }; 76 77 /* 78 * flag bits. 79 */ 80 81 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 82 #define MDELETED (1<<1) /* entry has been deleted */ 83 #define MSAVED (1<<2) /* entry has been saved */ 84 #define MTOUCH (1<<3) /* entry has been noticed */ 85 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 86 #define MMARK (1<<5) /* message is marked! */ 87 #define MODIFY (1<<6) /* message has been modified */ 88 #define MNEW (1<<7) /* message has never been seen */ 89 #define MREAD (1<<8) /* message has been read sometime. */ 90 #define MSTATUS (1<<9) /* message status has changed */ 91 #define MBOX (1<<10) /* Send this to mbox, regardless */ 92 93 /* 94 * Given a file address, determine the block number it represents. 95 */ 96 #define blockof(off) ((int) ((off) / 4096)) 97 #define offsetof(off) ((int) ((off) % 4096)) 98 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 99 100 /* 101 * Format of the command description table. 102 * The actual table is declared and initialized 103 * in lex.c 104 */ 105 struct cmd { 106 char *c_name; /* Name of command */ 107 int (*c_func)(); /* Implementor of the command */ 108 short c_argtype; /* Type of arglist (see below) */ 109 short c_msgflag; /* Required flags of messages */ 110 short c_msgmask; /* Relevant flags of messages */ 111 }; 112 113 /* Yechh, can't initialize unions */ 114 115 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 116 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 117 118 /* 119 * Argument types. 120 */ 121 122 #define MSGLIST 0 /* Message list type */ 123 #define STRLIST 1 /* A pure string */ 124 #define RAWLIST 2 /* Shell string list */ 125 #define NOLIST 3 /* Just plain 0 */ 126 #define NDMLIST 4 /* Message list, no defaults */ 127 128 #define P 040 /* Autoprint dot after command */ 129 #define I 0100 /* Interactive command bit */ 130 #define M 0200 /* Legal from send mode bit */ 131 #define W 0400 /* Illegal when read only bit */ 132 #define F 01000 /* Is a conditional command */ 133 #define T 02000 /* Is a transparent command */ 134 #define R 04000 /* Cannot be called from collect */ 135 136 /* 137 * Oft-used mask values 138 */ 139 140 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 141 #define MMNDEL MDELETED /* Look only at deleted bit */ 142 143 /* 144 * Structure used to return a break down of a head 145 * line (hats off to Bill Joy!) 146 */ 147 148 struct headline { 149 char *l_from; /* The name of the sender */ 150 char *l_tty; /* His tty string (if any) */ 151 char *l_date; /* The entire date string */ 152 }; 153 154 #define GTO 1 /* Grab To: line */ 155 #define GSUBJECT 2 /* Likewise, Subject: line */ 156 #define GCC 4 /* And the Cc: line */ 157 #define GBCC 8 /* And also the Bcc: line */ 158 #define GREPLYTO 0x10 /* And the Reply-To: line */ 159 #define GINREPLYTO 0x20 /* The In-Reply-To: line */ 160 #define GMASK (GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO) 161 /* Mask of places from whence */ 162 163 #define GNL 0x40 /* Print blank line after */ 164 #define GDEL 0x80 /* Entity removed from list */ 165 #define GCOMMA 0x100 /* detract puts in commas */ 166 167 /* 168 * Structure used to pass about the current 169 * state of the user-typed message header. 170 */ 171 172 struct header { 173 struct name *h_to; /* Dynamic "To:" string */ 174 char *h_subject; /* Subject string */ 175 struct name *h_cc; /* Carbon copies string */ 176 struct name *h_bcc; /* Blind carbon copies */ 177 char *h_replyto; /* Reply address */ 178 char *h_inreplyto; /* Reference */ 179 struct name *h_smopts; /* Sendmail options */ 180 }; 181 182 /* 183 * Structure of namelist nodes used in processing 184 * the recipients of mail and aliases and all that 185 * kind of stuff. 186 */ 187 188 struct name { 189 struct name *n_flink; /* Forward link in list. */ 190 struct name *n_blink; /* Backward list link */ 191 short n_type; /* From which list it came */ 192 char *n_name; /* This fella's name */ 193 }; 194 195 /* 196 * Structure of a variable node. All variables are 197 * kept on a singly-linked list of these, rooted by 198 * "variables" 199 */ 200 201 struct var { 202 struct var *v_link; /* Forward link to next variable */ 203 char *v_name; /* The variable's name */ 204 char *v_value; /* And it's current value */ 205 }; 206 207 struct group { 208 struct group *ge_link; /* Next person in this group */ 209 char *ge_name; /* This person's user name */ 210 }; 211 212 struct grouphead { 213 struct grouphead *g_link; /* Next grouphead in list */ 214 char *g_name; /* Name of this group */ 215 struct group *g_list; /* Users in group. */ 216 }; 217 218 #define NIL ((struct name *) 0) /* The nil pointer for namelists */ 219 #define NONE ((struct cmd *) 0) /* The nil pointer to command tab */ 220 #define NOVAR ((struct var *) 0) /* The nil pointer to variables */ 221 #define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */ 222 #define NOGE ((struct group *) 0) /* The nil group pointer */ 223 224 /* 225 * Structure of the hash table of ignored header fields 226 */ 227 struct ignoretab { 228 int i_count; /* Number of entries */ 229 struct ignore { 230 struct ignore *i_link; /* Next ignored field in bucket */ 231 char *i_field; /* This ignored field */ 232 } *i_head[HSHSIZE]; 233 }; 234 235 /* 236 * Token values returned by the scanner used for argument lists. 237 * Also, sizes of scanner-related things. 238 */ 239 240 #define TEOL 0 /* End of the command line */ 241 #define TNUMBER 1 /* A message number */ 242 #define TDASH 2 /* A simple dash */ 243 #define TSTRING 3 /* A string (possibly containing -) */ 244 #define TDOT 4 /* A "." */ 245 #define TUP 5 /* An "^" */ 246 #define TDOLLAR 6 /* A "$" */ 247 #define TSTAR 7 /* A "*" */ 248 #define TOPEN 8 /* An '(' */ 249 #define TCLOSE 9 /* A ')' */ 250 #define TPLUS 10 /* A '+' */ 251 #define TERROR 11 /* A lexical error */ 252 253 #define REGDEP 2 /* Maximum regret depth. */ 254 #define STRINGLEN 1024 /* Maximum length of string token */ 255 256 /* 257 * Constants for conditional commands. These describe whether 258 * we should be executing stuff or not. 259 */ 260 261 #define CANY 0 /* Execute in send or receive mode */ 262 #define CRCV 1 /* Execute in receive mode only */ 263 #define CSEND 2 /* Execute in send mode only */ 264 265 /* 266 * Kludges to handle the change from setexit / reset to setjmp / longjmp 267 */ 268 269 #define setexit() setjmp(srbuf) 270 #define reset(x) longjmp(srbuf, x) 271 272 /* 273 * Truncate a file to the last character written. This is 274 * useful just before closing an old file that was opened 275 * for read/write. 276 */ 277 #define trunc(stream) { \ 278 (void)fflush(stream); \ 279 (void)ftruncate(fileno(stream), (long)ftell(stream)); \ 280 } 281