1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * 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 5.22 (Berkeley) 6/25/90 34 */ 35 36 #include <sys/param.h> /* includes <sys/types.h> */ 37 #include <sys/signal.h> 38 #include <stdio.h> 39 #include <sgtty.h> 40 #include <ctype.h> 41 #include <string.h> 42 #include "pathnames.h" 43 44 /* 45 * Mail -- a mail program 46 * 47 * Author: Kurt Shoens (UCB) March 25, 1978 48 */ 49 50 #define APPEND /* New mail goes to end of mailbox */ 51 52 #define ESCAPE '~' /* Default escape for sending */ 53 #define NMLSIZE 1024 /* max names in a message list */ 54 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ 55 #define HSHSIZE 59 /* Hash size for aliases and vars */ 56 #define LINESIZE BUFSIZ /* max readable line width */ 57 #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ 58 #define MAXARGC 1024 /* Maximum list of raw strings */ 59 #define NOSTR ((char *) 0) /* Null string pointer */ 60 #define MAXEXP 25 /* Maximum expansion of aliases */ 61 62 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 63 64 struct message { 65 short m_flag; /* flags, see below */ 66 short m_block; /* block number of this message */ 67 short m_offset; /* offset in block of message */ 68 long m_size; /* Bytes in the message */ 69 short m_lines; /* Lines in the message */ 70 }; 71 72 /* 73 * flag bits. 74 */ 75 76 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 77 #define MDELETED (1<<1) /* entry has been deleted */ 78 #define MSAVED (1<<2) /* entry has been saved */ 79 #define MTOUCH (1<<3) /* entry has been noticed */ 80 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 81 #define MMARK (1<<5) /* message is marked! */ 82 #define MODIFY (1<<6) /* message has been modified */ 83 #define MNEW (1<<7) /* message has never been seen */ 84 #define MREAD (1<<8) /* message has been read sometime. */ 85 #define MSTATUS (1<<9) /* message status has changed */ 86 #define MBOX (1<<10) /* Send this to mbox, regardless */ 87 88 /* 89 * Given a file address, determine the block number it represents. 90 */ 91 #define blockof(off) ((int) ((off) / 4096)) 92 #define offsetof(off) ((int) ((off) % 4096)) 93 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 94 95 /* 96 * Format of the command description table. 97 * The actual table is declared and initialized 98 * in lex.c 99 */ 100 101 struct cmd { 102 char *c_name; /* Name of command */ 103 int (*c_func)(); /* Implementor of the command */ 104 short c_argtype; /* Type of arglist (see below) */ 105 short c_msgflag; /* Required flags of messages */ 106 short c_msgmask; /* Relevant flags of messages */ 107 }; 108 109 /* Yechh, can't initialize unions */ 110 111 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 112 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 113 114 /* 115 * Argument types. 116 */ 117 118 #define MSGLIST 0 /* Message list type */ 119 #define STRLIST 1 /* A pure string */ 120 #define RAWLIST 2 /* Shell string list */ 121 #define NOLIST 3 /* Just plain 0 */ 122 #define NDMLIST 4 /* Message list, no defaults */ 123 124 #define P 040 /* Autoprint dot after command */ 125 #define I 0100 /* Interactive command bit */ 126 #define M 0200 /* Legal from send mode bit */ 127 #define W 0400 /* Illegal when read only bit */ 128 #define F 01000 /* Is a conditional command */ 129 #define T 02000 /* Is a transparent command */ 130 #define R 04000 /* Cannot be called from collect */ 131 132 /* 133 * Oft-used mask values 134 */ 135 136 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 137 #define MMNDEL MDELETED /* Look only at deleted bit */ 138 139 /* 140 * Structure used to return a break down of a head 141 * line (hats off to Bill Joy!) 142 */ 143 144 struct headline { 145 char *l_from; /* The name of the sender */ 146 char *l_tty; /* His tty string (if any) */ 147 char *l_date; /* The entire date string */ 148 }; 149 150 #define GTO 1 /* Grab To: line */ 151 #define GSUBJECT 2 /* Likewise, Subject: line */ 152 #define GCC 4 /* And the Cc: line */ 153 #define GBCC 8 /* And also the Bcc: line */ 154 #define GMASK (GTO|GSUBJECT|GCC|GBCC) 155 /* Mask of places from whence */ 156 157 #define GNL 16 /* Print blank line after */ 158 #define GDEL 32 /* Entity removed from list */ 159 #define GCOMMA 64 /* detract puts in commas */ 160 161 /* 162 * Structure used to pass about the current 163 * state of the user-typed message header. 164 */ 165 166 struct header { 167 struct name *h_to; /* Dynamic "To:" string */ 168 char *h_subject; /* Subject string */ 169 struct name *h_cc; /* Carbon copies string */ 170 struct name *h_bcc; /* Blind carbon copies */ 171 struct name *h_smopts; /* Sendmail options */ 172 }; 173 174 /* 175 * Structure of namelist nodes used in processing 176 * the recipients of mail and aliases and all that 177 * kind of stuff. 178 */ 179 180 struct name { 181 struct name *n_flink; /* Forward link in list. */ 182 struct name *n_blink; /* Backward list link */ 183 short n_type; /* From which list it came */ 184 char *n_name; /* This fella's name */ 185 }; 186 187 /* 188 * Structure of a variable node. All variables are 189 * kept on a singly-linked list of these, rooted by 190 * "variables" 191 */ 192 193 struct var { 194 struct var *v_link; /* Forward link to next variable */ 195 char *v_name; /* The variable's name */ 196 char *v_value; /* And it's current value */ 197 }; 198 199 struct group { 200 struct group *ge_link; /* Next person in this group */ 201 char *ge_name; /* This person's user name */ 202 }; 203 204 struct grouphead { 205 struct grouphead *g_link; /* Next grouphead in list */ 206 char *g_name; /* Name of this group */ 207 struct group *g_list; /* Users in group. */ 208 }; 209 210 #define NIL ((struct name *) 0) /* The nil pointer for namelists */ 211 #define NONE ((struct cmd *) 0) /* The nil pointer to command tab */ 212 #define NOVAR ((struct var *) 0) /* The nil pointer to variables */ 213 #define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */ 214 #define NOGE ((struct group *) 0) /* The nil group pointer */ 215 216 /* 217 * Structure of the hash table of ignored header fields 218 */ 219 struct ignoretab { 220 int i_count; /* Number of entries */ 221 struct ignore { 222 struct ignore *i_link; /* Next ignored field in bucket */ 223 char *i_field; /* This ignored field */ 224 } *i_head[HSHSIZE]; 225 }; 226 227 /* 228 * Token values returned by the scanner used for argument lists. 229 * Also, sizes of scanner-related things. 230 */ 231 232 #define TEOL 0 /* End of the command line */ 233 #define TNUMBER 1 /* A message number */ 234 #define TDASH 2 /* A simple dash */ 235 #define TSTRING 3 /* A string (possibly containing -) */ 236 #define TDOT 4 /* A "." */ 237 #define TUP 5 /* An "^" */ 238 #define TDOLLAR 6 /* A "$" */ 239 #define TSTAR 7 /* A "*" */ 240 #define TOPEN 8 /* An '(' */ 241 #define TCLOSE 9 /* A ')' */ 242 #define TPLUS 10 /* A '+' */ 243 #define TERROR 11 /* A lexical error */ 244 245 #define REGDEP 2 /* Maximum regret depth. */ 246 #define STRINGLEN 1024 /* Maximum length of string token */ 247 248 /* 249 * Constants for conditional commands. These describe whether 250 * we should be executing stuff or not. 251 */ 252 253 #define CANY 0 /* Execute in send or receive mode */ 254 #define CRCV 1 /* Execute in receive mode only */ 255 #define CSEND 2 /* Execute in send mode only */ 256 257 /* 258 * Kludges to handle the change from setexit / reset to setjmp / longjmp 259 */ 260 261 #define setexit() setjmp(srbuf) 262 #define reset(x) longjmp(srbuf, x) 263 264 /* 265 * Truncate a file to the last character written. This is 266 * useful just before closing an old file that was opened 267 * for read/write. 268 */ 269 #define trunc(stream) ftruncate(fileno(stream), (long) ftell(stream)) 270 271 /* 272 * Forward declarations of routine types to keep lint and cc happy. 273 */ 274 275 FILE *Fopen(); 276 FILE *Fdopen(); 277 FILE *Popen(); 278 FILE *collect(); 279 FILE *infix(); 280 FILE *run_editor(); 281 FILE *setinput(); 282 char **unpack(); 283 char *calloc(); 284 char *copy(); 285 char *copyin(); 286 char *detract(); 287 char *expand(); 288 char *getdeadletter(); 289 char *gets(); 290 char *hfield(); 291 char *name1(); 292 char *nameof(); 293 char *nextword(); 294 char *getenv(); 295 char *getname(); 296 char *fgets(); 297 char *ishfield(); 298 char *malloc(); 299 char *mktemp(); 300 char *readtty(); 301 char *reedit(); 302 char *salloc(); 303 char *savestr(); 304 char *skin(); 305 char *snarf(); 306 char *username(); 307 char *value(); 308 char *vcopy(); 309 char *yankword(); 310 off_t fsize(); 311 uid_t getuid(); 312 struct cmd *lex(); 313 struct grouphead *findgroup(); 314 struct name *nalloc(); 315 struct name *cat(); 316 struct name *delname(); 317 struct name *elide(); 318 struct name *extract(); 319 struct name *gexpand(); 320 struct name *outof(); 321 struct name *put(); 322 struct name *usermap(); 323 struct var *lookup(); 324