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 8.4 (Berkeley) 4/20/95 34 * 35 * $FreeBSD$ 36 */ 37 38 /* 39 * Mail -- a mail program 40 * 41 * Author: Kurt Shoens (UCB) March 25, 1978 42 */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <paths.h> 50 #include <signal.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <termios.h> 55 #include <time.h> 56 #include <unistd.h> 57 58 #include "pathnames.h" 59 60 #define APPEND /* New mail goes to end of mailbox */ 61 62 #define ESCAPE '~' /* Default escape for sending */ 63 #define NMLSIZE 1024 /* max names in a message list */ 64 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ 65 #define HSHSIZE 59 /* Hash size for aliases and vars */ 66 #define LINESIZE BUFSIZ /* max readable line width */ 67 #define STRINGSIZE ((unsigned)128) /* Dynamic allocation units */ 68 #define MAXARGC 1024 /* Maximum list of raw strings */ 69 #define MAXEXP 25 /* Maximum expansion of aliases */ 70 71 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 72 73 struct message { 74 short m_flag; /* flags, see below */ 75 short m_offset; /* offset in block of message */ 76 long m_block; /* block number of this message */ 77 long m_size; /* Bytes in the message */ 78 long m_lines; /* Lines in the message */ 79 }; 80 81 /* 82 * flag bits. 83 */ 84 85 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 86 #define MDELETED (1<<1) /* entry has been deleted */ 87 #define MSAVED (1<<2) /* entry has been saved */ 88 #define MTOUCH (1<<3) /* entry has been noticed */ 89 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 90 #define MMARK (1<<5) /* message is marked! */ 91 #define MODIFY (1<<6) /* message has been modified */ 92 #define MNEW (1<<7) /* message has never been seen */ 93 #define MREAD (1<<8) /* message has been read sometime. */ 94 #define MSTATUS (1<<9) /* message status has changed */ 95 #define MBOX (1<<10) /* Send this to mbox, regardless */ 96 97 /* 98 * Given a file address, determine the block number it represents. 99 */ 100 #define blockof(off) ((int)((off) / 4096)) 101 #define boffsetof(off) ((int)((off) % 4096)) 102 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 103 104 /* 105 * Format of the command description table. 106 * The actual table is declared and initialized 107 * in lex.c 108 */ 109 struct cmd { 110 const char *c_name; /* Name of command */ 111 int (*c_func)(); /* Implementor of the command */ 112 short c_argtype; /* Type of arglist (see below) */ 113 short c_msgflag; /* Required flags of messages */ 114 short c_msgmask; /* Relevant flags of messages */ 115 }; 116 117 /* Yechh, can't initialize unions */ 118 119 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 120 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 121 122 /* 123 * Argument types. 124 */ 125 126 #define MSGLIST 0 /* Message list type */ 127 #define STRLIST 1 /* A pure string */ 128 #define RAWLIST 2 /* Shell string list */ 129 #define NOLIST 3 /* Just plain 0 */ 130 #define NDMLIST 4 /* Message list, no defaults */ 131 132 #define P 040 /* Autoprint dot after command */ 133 #define I 0100 /* Interactive command bit */ 134 #define M 0200 /* Legal from send mode bit */ 135 #define W 0400 /* Illegal when read only bit */ 136 #define F 01000 /* Is a conditional command */ 137 #define T 02000 /* Is a transparent command */ 138 #define R 04000 /* Cannot be called from collect */ 139 140 /* 141 * Oft-used mask values 142 */ 143 144 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 145 #define MMNDEL MDELETED /* Look only at deleted bit */ 146 147 /* 148 * Structure used to return a break down of a head 149 * line (hats off to Bill Joy!) 150 */ 151 152 struct headline { 153 char *l_from; /* The name of the sender */ 154 char *l_tty; /* His tty string (if any) */ 155 char *l_date; /* The entire date string */ 156 }; 157 158 #define GTO 1 /* Grab To: line */ 159 #define GSUBJECT 2 /* Likewise, Subject: line */ 160 #define GCC 4 /* And the Cc: line */ 161 #define GBCC 8 /* And also the Bcc: line */ 162 #define GREPLYTO 0x10 /* And the Reply-To: line */ 163 #define GINREPLYTO 0x20 /* The In-Reply-To: line */ 164 #define GMASK (GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO) 165 /* Mask of places from whence */ 166 167 #define GNL 0x40 /* Print blank line after */ 168 #define GDEL 0x80 /* Entity removed from list */ 169 #define GCOMMA 0x100 /* detract puts in commas */ 170 171 /* 172 * Structure used to pass about the current 173 * state of the user-typed message header. 174 */ 175 176 struct header { 177 struct name *h_bcc; /* Blind carbon copies */ 178 struct name *h_cc; /* Carbon copies string */ 179 struct name *h_smopts; /* Sendmail options */ 180 struct name *h_to; /* Dynamic "To:" string */ 181 char *h_inreplyto; /* Reference */ 182 char *h_replyto; /* Reply address */ 183 char *h_subject; /* Subject string */ 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