1 /* $NetBSD: def.h,v 1.16 2003/08/07 11:14:37 agc Exp $ */ 2 /* 3 * Copyright (c) 1980, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)def.h 8.4 (Berkeley) 4/20/95 31 * $NetBSD: def.h,v 1.16 2003/08/07 11:14:37 agc Exp $ 32 */ 33 34 /* 35 * Mail -- a mail program 36 * 37 * Author: Kurt Shoens (UCB) March 25, 1978 38 */ 39 40 #include <sys/types.h> 41 #include <sys/file.h> 42 #include <sys/ioctl.h> 43 #include <sys/stat.h> 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/wait.h> 47 48 #include <ctype.h> 49 #include <err.h> 50 #include <errno.h> 51 #include <fcntl.h> 52 #include <paths.h> 53 #include <pwd.h> 54 #include <signal.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <termios.h> 59 #include <time.h> 60 #include <unistd.h> 61 #include "pathnames.h" 62 63 #define APPEND /* New mail goes to end of mailbox */ 64 65 #define ESCAPE '~' /* Default escape for sending */ 66 #define NMLSIZE 1024 /* max names in a message list */ 67 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ 68 #define HSHSIZE 59 /* Hash size for aliases and vars */ 69 #define LINESIZE BUFSIZ /* max readable line width */ 70 #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ 71 #define MAXARGC 1024 /* Maximum list of raw strings */ 72 #define MAXEXP 25 /* Maximum expansion of aliases */ 73 74 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 75 76 struct message { 77 short m_flag; /* flags, see below */ 78 long m_block; /* block number of this message */ 79 short m_offset; /* offset in block of message */ 80 long m_size; /* Bytes in the message */ 81 long m_lines; /* Lines in the message */ 82 long m_blines; /* Body (non-header) lines */ 83 }; 84 85 /* 86 * flag bits. 87 */ 88 89 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 90 #define MDELETED (1<<1) /* entry has been deleted */ 91 #define MSAVED (1<<2) /* entry has been saved */ 92 #define MTOUCH (1<<3) /* entry has been noticed */ 93 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 94 #define MMARK (1<<5) /* message is marked! */ 95 #define MODIFY (1<<6) /* message has been modified */ 96 #define MNEW (1<<7) /* message has never been seen */ 97 #define MREAD (1<<8) /* message has been read sometime. */ 98 #define MSTATUS (1<<9) /* message status has changed */ 99 #define MBOX (1<<10) /* Send this to mbox, regardless */ 100 101 /* 102 * Given a file address, determine the block number it represents. 103 */ 104 #define blockof(off) ((int) ((off) / 4096)) 105 #define offsetof(off) ((int) ((off) % 4096)) 106 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 107 108 /* 109 * Format of the command description table. 110 * The actual table is declared and initialized 111 * in lex.c 112 */ 113 struct cmd { 114 char *c_name; /* Name of command */ 115 int (*c_func)(void *); /* Implementor of the command */ 116 short c_argtype; /* Type of arglist (see below) */ 117 short c_msgflag; /* Required flags of messages */ 118 short c_msgmask; /* Relevant flags of messages */ 119 }; 120 121 /* Yechh, can't initialize unions */ 122 123 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 124 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 125 126 /* 127 * Argument types. 128 */ 129 130 #define MSGLIST 0 /* Message list type */ 131 #define STRLIST 1 /* A pure string */ 132 #define RAWLIST 2 /* Shell string list */ 133 #define NOLIST 3 /* Just plain 0 */ 134 #define NDMLIST 4 /* Message list, no defaults */ 135 136 #define P 040 /* Autoprint dot after command */ 137 #define I 0100 /* Interactive command bit */ 138 #define M 0200 /* Legal from send mode bit */ 139 #define W 0400 /* Illegal when read only bit */ 140 #define F 01000 /* Is a conditional command */ 141 #define T 02000 /* Is a transparent command */ 142 #define R 04000 /* Cannot be called from collect */ 143 144 /* 145 * Oft-used mask values 146 */ 147 148 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 149 #define MMNDEL MDELETED /* Look only at deleted bit */ 150 151 /* 152 * Structure used to return a break down of a head 153 * line (hats off to Bill Joy!) 154 */ 155 156 struct headline { 157 char *l_from; /* The name of the sender */ 158 char *l_tty; /* His tty string (if any) */ 159 char *l_date; /* The entire date string */ 160 }; 161 162 #define GTO 1 /* Grab To: line */ 163 #define GSUBJECT 2 /* Likewise, Subject: line */ 164 #define GCC 4 /* And the Cc: line */ 165 #define GBCC 8 /* And also the Bcc: line */ 166 #define GMASK (GTO|GSUBJECT|GCC|GBCC) 167 /* Mask of places from whence */ 168 169 #define GNL 16 /* Print blank line after */ 170 #define GDEL 32 /* Entity removed from list */ 171 #define GCOMMA 64 /* detract puts in commas */ 172 173 /* 174 * Structure used to pass about the current 175 * state of the user-typed message header. 176 */ 177 178 struct header { 179 struct name *h_to; /* Dynamic "To:" string */ 180 char *h_subject; /* Subject string */ 181 struct name *h_cc; /* Carbon copies string */ 182 struct name *h_bcc; /* Blind carbon copies */ 183 struct name *h_smopts; /* Sendmail options */ 184 }; 185 186 /* 187 * Structure of namelist nodes used in processing 188 * the recipients of mail and aliases and all that 189 * kind of stuff. 190 */ 191 192 struct name { 193 struct name *n_flink; /* Forward link in list. */ 194 struct name *n_blink; /* Backward list link */ 195 short n_type; /* From which list it came */ 196 char *n_name; /* This fella's name */ 197 }; 198 199 /* 200 * Structure of a variable node. All variables are 201 * kept on a singly-linked list of these, rooted by 202 * "variables" 203 */ 204 205 struct var { 206 struct var *v_link; /* Forward link to next variable */ 207 char *v_name; /* The variable's name */ 208 char *v_value; /* And it's current value */ 209 }; 210 211 struct group { 212 struct group *ge_link; /* Next person in this group */ 213 char *ge_name; /* This person's user name */ 214 }; 215 216 struct grouphead { 217 struct grouphead *g_link; /* Next grouphead in list */ 218 char *g_name; /* Name of this group */ 219 struct group *g_list; /* Users in group. */ 220 }; 221 222 /* 223 * Structure of the hash table of ignored header fields 224 */ 225 struct ignoretab { 226 int i_count; /* Number of entries */ 227 struct ignore { 228 struct ignore *i_link; /* Next ignored field in bucket */ 229 char *i_field; /* This ignored field */ 230 } *i_head[HSHSIZE]; 231 }; 232 233 /* 234 * Token values returned by the scanner used for argument lists. 235 * Also, sizes of scanner-related things. 236 */ 237 238 #define TEOL 0 /* End of the command line */ 239 #define TNUMBER 1 /* A message number */ 240 #define TDASH 2 /* A simple dash */ 241 #define TSTRING 3 /* A string (possibly containing -) */ 242 #define TDOT 4 /* A "." */ 243 #define TUP 5 /* An "^" */ 244 #define TDOLLAR 6 /* A "$" */ 245 #define TSTAR 7 /* A "*" */ 246 #define TOPEN 8 /* An '(' */ 247 #define TCLOSE 9 /* A ')' */ 248 #define TPLUS 10 /* A '+' */ 249 #define TERROR 11 /* A lexical error */ 250 251 #define REGDEP 2 /* Maximum regret depth. */ 252 #define STRINGLEN 1024 /* Maximum length of string token */ 253 254 /* 255 * Constants for conditional commands. These describe whether 256 * we should be executing stuff or not. 257 */ 258 259 #define CANY 0 /* Execute in send or receive mode */ 260 #define CRCV 1 /* Execute in receive mode only */ 261 #define CSEND 2 /* Execute in send mode only */ 262 263 /* 264 * Kludges to handle the change from setexit / reset to setjmp / longjmp 265 */ 266 267 #define setexit() setjmp(srbuf) 268 #define reset(x) longjmp(srbuf, x) 269 270 /* 271 * Truncate a file to the last character written. This is 272 * useful just before closing an old file that was opened 273 * for read/write. 274 */ 275 #define trunc(stream) { \ 276 (void)fflush(stream); \ 277 (void)ftruncate(fileno(stream), (off_t)ftell(stream)); \ 278 } 279