1 /* $NetBSD: def.h,v 1.19 2006/09/18 19:46:21 christos 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 1.19 2006/09/18 19:46:21 christos 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 short m_offset; /* offset in block of message */ 79 long m_block; /* block number of this message */ 80 long m_lines; /* Lines in the message */ 81 off_t m_size; /* Bytes 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 const char *c_name; /* Name of command */ 115 int (*c_func)(void *); /* Implementor of the command */ 116 #ifdef USE_READLINE 117 const char *c_complete; /* String describing completion */ 118 #endif 119 short c_argtype; /* Type of arglist (see below) */ 120 short c_msgflag; /* Required flags of messages */ 121 short c_msgmask; /* Relevant flags of messages */ 122 }; 123 124 /* Yechh, can't initialize unions */ 125 126 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 127 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 128 129 /* 130 * Argument types. 131 */ 132 133 #define MSGLIST 0 /* Message list type */ 134 #define STRLIST 1 /* A pure string */ 135 #define RAWLIST 2 /* Shell string list */ 136 #define NOLIST 3 /* Just plain 0 */ 137 #define NDMLIST 4 /* Message list, no defaults */ 138 139 #define P 040 /* Autoprint dot after command */ 140 #define I 0100 /* Interactive command bit */ 141 #define M 0200 /* Legal from send mode bit */ 142 #define W 0400 /* Illegal when read only bit */ 143 #define F 01000 /* Is a conditional command */ 144 #define T 02000 /* Is a transparent command */ 145 #define R 04000 /* Cannot be called from collect */ 146 147 /* 148 * Oft-used mask values 149 */ 150 151 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 152 #define MMNDEL MDELETED /* Look only at deleted bit */ 153 154 /* 155 * Structure used to return a break down of a head 156 * line (hats off to Bill Joy!) 157 */ 158 159 struct headline { 160 char *l_from; /* The name of the sender */ 161 char *l_tty; /* His tty string (if any) */ 162 char *l_date; /* The entire date string */ 163 }; 164 165 #define GTO 0x001 /* Grab To: line */ 166 #define GSUBJECT 0x002 /* Likewise, Subject: line */ 167 #define GCC 0x004 /* And the Cc: line */ 168 #define GBCC 0x008 /* And also the Bcc: line */ 169 #define GSMOPTS 0x010 /* Grab the sendmail options */ 170 #define GMASK (GTO|GSUBJECT|GCC|GBCC|GSMOPTS) 171 /* Mask of places from whence */ 172 173 #define GNL 0x100 /* Print blank line after */ 174 #define GDEL 0x200 /* Entity removed from list */ 175 #define GCOMMA 0x400 /* detract puts in commas */ 176 177 /* 178 * Structure used to pass about the current 179 * state of the user-typed message header. 180 */ 181 182 struct header { 183 struct name *h_to; /* Dynamic "To:" string */ 184 char *h_subject; /* Subject string */ 185 struct name *h_cc; /* Carbon copies string */ 186 struct name *h_bcc; /* Blind carbon copies */ 187 struct name *h_smopts; /* Sendmail options */ 188 }; 189 190 /* 191 * Structure of namelist nodes used in processing 192 * the recipients of mail and aliases and all that 193 * kind of stuff. 194 */ 195 196 struct name { 197 struct name *n_flink; /* Forward link in list. */ 198 struct name *n_blink; /* Backward list link */ 199 short n_type; /* From which list it came */ 200 char *n_name; /* This fella's name */ 201 }; 202 203 /* 204 * Structure of a variable node. All variables are 205 * kept on a singly-linked list of these, rooted by 206 * "variables" 207 */ 208 209 struct var { 210 struct var *v_link; /* Forward link to next variable */ 211 char *v_name; /* The variable's name */ 212 char *v_value; /* And it's current value */ 213 }; 214 215 struct group { 216 struct group *ge_link; /* Next person in this group */ 217 char *ge_name; /* This person's user name */ 218 }; 219 220 struct grouphead { 221 struct grouphead *g_link; /* Next grouphead in list */ 222 char *g_name; /* Name of this group */ 223 struct group *g_list; /* Users in group. */ 224 }; 225 226 /* 227 * Structure of the hash table of ignored header fields 228 */ 229 struct ignoretab { 230 size_t i_count; /* Number of entries */ 231 struct ignore { 232 struct ignore *i_link; /* Next ignored field in bucket */ 233 char *i_field; /* This ignored field */ 234 } *i_head[HSHSIZE]; 235 }; 236 237 /* 238 * Token values returned by the scanner used for argument lists. 239 * Also, sizes of scanner-related things. 240 */ 241 242 #define TEOL 0 /* End of the command line */ 243 #define TNUMBER 1 /* A message number */ 244 #define TDASH 2 /* A simple dash */ 245 #define TSTRING 3 /* A string (possibly containing -) */ 246 #define TDOT 4 /* A "." */ 247 #define TUP 5 /* An "^" */ 248 #define TDOLLAR 6 /* A "$" */ 249 #define TSTAR 7 /* A "*" */ 250 #define TOPEN 8 /* An '(' */ 251 #define TCLOSE 9 /* A ')' */ 252 #define TPLUS 10 /* A '+' */ 253 #define TERROR 11 /* A lexical error */ 254 255 #define REGDEP 2 /* Maximum regret depth. */ 256 #define STRINGLEN 1024 /* Maximum length of string token */ 257 258 /* 259 * Constants for conditional commands. These describe whether 260 * we should be executing stuff or not. 261 */ 262 263 #define CANY 0 /* Execute in send or receive mode */ 264 #define CRCV 1 /* Execute in receive mode only */ 265 #define CSEND 2 /* Execute in send mode only */ 266 267 /* 268 * Kludges to handle the change from setexit / reset to setjmp / longjmp 269 */ 270 271 #define setexit() (void)setjmp(srbuf) 272 #define reset(x) longjmp(srbuf, x) 273 274 /* 275 * Truncate a file to the last character written. This is 276 * useful just before closing an old file that was opened 277 * for read/write. 278 */ 279 #define trunc(stream) { \ 280 (void)fflush(stream); \ 281 (void)ftruncate(fileno(stream), (off_t)ftell(stream)); \ 282 } 283