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 are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)def.h 5.18 (Berkeley) 08/17/88 18 */ 19 20 #include <sys/param.h> /* includes <sys/types.h> */ 21 #include <sys/signal.h> 22 #include <stdio.h> 23 #include <sgtty.h> 24 #include <ctype.h> 25 #include <strings.h> 26 #include "local.h" 27 28 /* 29 * Mail -- a mail program 30 * 31 * Author: Kurt Shoens (UCB) March 25, 1978 32 */ 33 34 35 #define ESCAPE '~' /* Default escape for sending */ 36 #define NMLSIZE 1024 /* max names in a message list */ 37 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ 38 #define HSHSIZE 59 /* Hash size for aliases and vars */ 39 #define LINESIZE BUFSIZ /* max readable line width */ 40 #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ 41 #define MAXARGC 1024 /* Maximum list of raw strings */ 42 #define NOSTR ((char *) 0) /* Null string pointer */ 43 #define MAXEXP 25 /* Maximum expansion of aliases */ 44 45 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 46 47 struct message { 48 short m_flag; /* flags, see below */ 49 short m_block; /* block number of this message */ 50 short m_offset; /* offset in block of message */ 51 long m_size; /* Bytes in the message */ 52 short m_lines; /* Lines in the message */ 53 }; 54 55 /* 56 * flag bits. 57 */ 58 59 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 60 #define MDELETED (1<<1) /* entry has been deleted */ 61 #define MSAVED (1<<2) /* entry has been saved */ 62 #define MTOUCH (1<<3) /* entry has been noticed */ 63 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 64 #define MMARK (1<<5) /* message is marked! */ 65 #define MODIFY (1<<6) /* message has been modified */ 66 #define MNEW (1<<7) /* message has never been seen */ 67 #define MREAD (1<<8) /* message has been read sometime. */ 68 #define MSTATUS (1<<9) /* message status has changed */ 69 #define MBOX (1<<10) /* Send this to mbox, regardless */ 70 71 /* 72 * Given a file address, determine the block number it represents. 73 */ 74 #define blockof(off) ((int) ((off) / 4096)) 75 #define offsetof(off) ((int) ((off) % 4096)) 76 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 77 78 /* 79 * Format of the command description table. 80 * The actual table is declared and initialized 81 * in lex.c 82 */ 83 84 struct cmd { 85 char *c_name; /* Name of command */ 86 int (*c_func)(); /* Implementor of the command */ 87 short c_argtype; /* Type of arglist (see below) */ 88 short c_msgflag; /* Required flags of messages */ 89 short c_msgmask; /* Relevant flags of messages */ 90 }; 91 92 /* Yechh, can't initialize unions */ 93 94 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 95 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 96 97 /* 98 * Argument types. 99 */ 100 101 #define MSGLIST 0 /* Message list type */ 102 #define STRLIST 1 /* A pure string */ 103 #define RAWLIST 2 /* Shell string list */ 104 #define NOLIST 3 /* Just plain 0 */ 105 #define NDMLIST 4 /* Message list, no defaults */ 106 107 #define P 040 /* Autoprint dot after command */ 108 #define I 0100 /* Interactive command bit */ 109 #define M 0200 /* Legal from send mode bit */ 110 #define W 0400 /* Illegal when read only bit */ 111 #define F 01000 /* Is a conditional command */ 112 #define T 02000 /* Is a transparent command */ 113 #define R 04000 /* Cannot be called from collect */ 114 115 /* 116 * Oft-used mask values 117 */ 118 119 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 120 #define MMNDEL MDELETED /* Look only at deleted bit */ 121 122 /* 123 * Structure used to return a break down of a head 124 * line (hats off to Bill Joy!) 125 */ 126 127 struct headline { 128 char *l_from; /* The name of the sender */ 129 char *l_tty; /* His tty string (if any) */ 130 char *l_date; /* The entire date string */ 131 }; 132 133 #define GTO 1 /* Grab To: line */ 134 #define GSUBJECT 2 /* Likewise, Subject: line */ 135 #define GCC 4 /* And the Cc: line */ 136 #define GBCC 8 /* And also the Bcc: line */ 137 #define GMASK (GTO|GSUBJECT|GCC|GBCC) 138 /* Mask of places from whence */ 139 140 #define GNL 16 /* Print blank line after */ 141 #define GDEL 32 /* Entity removed from list */ 142 #define GCOMMA 64 /* detract puts in commas */ 143 144 /* 145 * Structure used to pass about the current 146 * state of the user-typed message header. 147 */ 148 149 struct header { 150 struct name *h_to; /* Dynamic "To:" string */ 151 char *h_subject; /* Subject string */ 152 struct name *h_cc; /* Carbon copies string */ 153 struct name *h_bcc; /* Blind carbon copies */ 154 struct name *h_smopts; /* Sendmail options */ 155 }; 156 157 /* 158 * Structure of namelist nodes used in processing 159 * the recipients of mail and aliases and all that 160 * kind of stuff. 161 */ 162 163 struct name { 164 struct name *n_flink; /* Forward link in list. */ 165 struct name *n_blink; /* Backward list link */ 166 short n_type; /* From which list it came */ 167 char *n_name; /* This fella's name */ 168 }; 169 170 /* 171 * Structure of a variable node. All variables are 172 * kept on a singly-linked list of these, rooted by 173 * "variables" 174 */ 175 176 struct var { 177 struct var *v_link; /* Forward link to next variable */ 178 char *v_name; /* The variable's name */ 179 char *v_value; /* And it's current value */ 180 }; 181 182 struct group { 183 struct group *ge_link; /* Next person in this group */ 184 char *ge_name; /* This person's user name */ 185 }; 186 187 struct grouphead { 188 struct grouphead *g_link; /* Next grouphead in list */ 189 char *g_name; /* Name of this group */ 190 struct group *g_list; /* Users in group. */ 191 }; 192 193 #define NIL ((struct name *) 0) /* The nil pointer for namelists */ 194 #define NONE ((struct cmd *) 0) /* The nil pointer to command tab */ 195 #define NOVAR ((struct var *) 0) /* The nil pointer to variables */ 196 #define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */ 197 #define NOGE ((struct group *) 0) /* The nil group pointer */ 198 199 /* 200 * Structure of the hash table of ignored header fields 201 */ 202 struct ignoretab { 203 int i_count; /* Number of entries */ 204 struct ignore { 205 struct ignore *i_link; /* Next ignored field in bucket */ 206 char *i_field; /* This ignored field */ 207 } *i_head[HSHSIZE]; 208 }; 209 210 /* 211 * Token values returned by the scanner used for argument lists. 212 * Also, sizes of scanner-related things. 213 */ 214 215 #define TEOL 0 /* End of the command line */ 216 #define TNUMBER 1 /* A message number */ 217 #define TDASH 2 /* A simple dash */ 218 #define TSTRING 3 /* A string (possibly containing -) */ 219 #define TDOT 4 /* A "." */ 220 #define TUP 5 /* An "^" */ 221 #define TDOLLAR 6 /* A "$" */ 222 #define TSTAR 7 /* A "*" */ 223 #define TOPEN 8 /* An '(' */ 224 #define TCLOSE 9 /* A ')' */ 225 #define TPLUS 10 /* A '+' */ 226 #define TERROR 11 /* A lexical error */ 227 228 #define REGDEP 2 /* Maximum regret depth. */ 229 #define STRINGLEN 1024 /* Maximum length of string token */ 230 231 /* 232 * Constants for conditional commands. These describe whether 233 * we should be executing stuff or not. 234 */ 235 236 #define CANY 0 /* Execute in send or receive mode */ 237 #define CRCV 1 /* Execute in receive mode only */ 238 #define CSEND 2 /* Execute in send mode only */ 239 240 /* 241 * Kludges to handle the change from setexit / reset to setjmp / longjmp 242 */ 243 244 #define setexit() setjmp(srbuf) 245 #define reset(x) longjmp(srbuf, x) 246 247 /* 248 * Truncate a file to the last character written. This is 249 * useful just before closing an old file that was opened 250 * for read/write. 251 */ 252 #define trunc(stream) ftruncate(fileno(stream), (long) ftell(stream)) 253 254 /* 255 * Forward declarations of routine types to keep lint and cc happy. 256 */ 257 258 FILE *Fdopen(); 259 FILE *Popen(); 260 FILE *collect(); 261 FILE *infix(); 262 FILE *run_editor(); 263 FILE *setinput(); 264 char **unpack(); 265 char *calloc(); 266 char *copy(); 267 char *copyin(); 268 char *detract(); 269 char *expand(); 270 char *getdeadletter(); 271 char *gets(); 272 char *hfield(); 273 char *name1(); 274 char *nameof(); 275 char *nextword(); 276 char *getenv(); 277 char *getname(); 278 char *fgets(); 279 char *ishfield(); 280 char *malloc(); 281 char *mktemp(); 282 char *readtty(); 283 char *reedit(); 284 char *salloc(); 285 char *savestr(); 286 char *skin(); 287 char *snarf(); 288 char *username(); 289 char *value(); 290 char *vcopy(); 291 char *yankword(); 292 off_t fsize(); 293 uid_t getuid(); 294 struct cmd *lex(); 295 struct grouphead *findgroup(); 296 struct name *nalloc(); 297 struct name *cat(); 298 struct name *delname(); 299 struct name *elide(); 300 struct name *extract(); 301 struct name *gexpand(); 302 struct name *outof(); 303 struct name *put(); 304 struct name *usermap(); 305 struct var *lookup(); 306