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 this notice is preserved and that due credit is given 7 * to the University of California at Berkeley. The name of the University 8 * may not be used to endorse or promote products derived from this 9 * software without specific prior written permission. This software 10 * is provided ``as is'' without express or implied warranty. 11 * 12 * @(#)def.h 5.10 (Berkeley) 06/17/88 13 */ 14 15 #include <sys/param.h> /* includes <sys/types.h> */ 16 #include <sys/signal.h> 17 #include <stdio.h> 18 #include <sgtty.h> 19 #include <ctype.h> 20 #include <strings.h> 21 #include "local.h" 22 23 /* 24 * Mail -- a mail program 25 * 26 * Author: Kurt Shoens (UCB) March 25, 1978 27 */ 28 29 30 #define ESCAPE '~' /* Default escape for sending */ 31 #define NMLSIZE 1024 /* max names in a message list */ 32 #define PATHSIZE 1024 /* Size of pathnames throughout */ 33 #define NAMESIZE 32 /* Max size of user name */ 34 #define HSHSIZE 59 /* Hash size for aliases and vars */ 35 #define HDRFIELDS 3 /* Number of header fields */ 36 #define LINESIZE BUFSIZ /* max readable line width */ 37 #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ 38 #define MAXARGC 1024 /* Maximum list of raw strings */ 39 #define NOSTR ((char *) 0) /* Null string pointer */ 40 #define MAXEXP 25 /* Maximum expansion of aliases */ 41 42 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ 43 44 struct message { 45 short m_flag; /* flags, see below */ 46 short m_block; /* block number of this message */ 47 short m_offset; /* offset in block of message */ 48 long m_size; /* Bytes in the message */ 49 short m_lines; /* Lines in the message */ 50 }; 51 52 /* 53 * flag bits. 54 */ 55 56 #define MUSED (1<<0) /* entry is used, but this bit isn't */ 57 #define MDELETED (1<<1) /* entry has been deleted */ 58 #define MSAVED (1<<2) /* entry has been saved */ 59 #define MTOUCH (1<<3) /* entry has been noticed */ 60 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ 61 #define MMARK (1<<5) /* message is marked! */ 62 #define MODIFY (1<<6) /* message has been modified */ 63 #define MNEW (1<<7) /* message has never been seen */ 64 #define MREAD (1<<8) /* message has been read sometime. */ 65 #define MSTATUS (1<<9) /* message status has changed */ 66 #define MBOX (1<<10) /* Send this to mbox, regardless */ 67 68 /* 69 * Given a file address, determine the block number it represents. 70 */ 71 #define blockof(off) ((int) ((off) / 4096)) 72 #define offsetof(off) ((int) ((off) % 4096)) 73 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) 74 75 /* 76 * Format of the command description table. 77 * The actual table is declared and initialized 78 * in lex.c 79 */ 80 81 struct cmd { 82 char *c_name; /* Name of command */ 83 int (*c_func)(); /* Implementor of the command */ 84 short c_argtype; /* Type of arglist (see below) */ 85 short c_msgflag; /* Required flags of messages */ 86 short c_msgmask; /* Relevant flags of messages */ 87 }; 88 89 /* Yechh, can't initialize unions */ 90 91 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ 92 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ 93 94 /* 95 * Argument types. 96 */ 97 98 #define MSGLIST 0 /* Message list type */ 99 #define STRLIST 1 /* A pure string */ 100 #define RAWLIST 2 /* Shell string list */ 101 #define NOLIST 3 /* Just plain 0 */ 102 #define NDMLIST 4 /* Message list, no defaults */ 103 104 #define P 040 /* Autoprint dot after command */ 105 #define I 0100 /* Interactive command bit */ 106 #define M 0200 /* Legal from send mode bit */ 107 #define W 0400 /* Illegal when read only bit */ 108 #define F 01000 /* Is a conditional command */ 109 #define T 02000 /* Is a transparent command */ 110 #define R 04000 /* Cannot be called from collect */ 111 112 /* 113 * Oft-used mask values 114 */ 115 116 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ 117 #define MMNDEL MDELETED /* Look only at deleted bit */ 118 119 /* 120 * Structure used to return a break down of a head 121 * line (hats off to Bill Joy!) 122 */ 123 124 struct headline { 125 char *l_from; /* The name of the sender */ 126 char *l_tty; /* His tty string (if any) */ 127 char *l_date; /* The entire date string */ 128 }; 129 130 #define GTO 1 /* Grab To: line */ 131 #define GSUBJECT 2 /* Likewise, Subject: line */ 132 #define GCC 4 /* And the Cc: line */ 133 #define GBCC 8 /* And also the Bcc: line */ 134 #define GMASK (GTO|GSUBJECT|GCC|GBCC) 135 /* Mask of places from whence */ 136 137 #define GNL 16 /* Print blank line after */ 138 #define GDEL 32 /* Entity removed from list */ 139 #define GCOMMA 64 /* detract puts in commas */ 140 141 /* 142 * Structure used to pass about the current 143 * state of the user-typed message header. 144 */ 145 146 struct header { 147 char *h_to; /* Dynamic "To:" string */ 148 char *h_subject; /* Subject string */ 149 char *h_cc; /* Carbon copies string */ 150 char *h_bcc; /* Blind carbon copies */ 151 char *h_smopts; /* Sendmail options */ 152 int h_seq; /* Sequence for optimization */ 153 }; 154 155 /* 156 * Structure of namelist nodes used in processing 157 * the recipients of mail and aliases and all that 158 * kind of stuff. 159 */ 160 161 struct name { 162 struct name *n_flink; /* Forward link in list. */ 163 struct name *n_blink; /* Backward list link */ 164 short n_type; /* From which list it came */ 165 char *n_name; /* This fella's name */ 166 }; 167 168 /* 169 * Structure of a variable node. All variables are 170 * kept on a singly-linked list of these, rooted by 171 * "variables" 172 */ 173 174 struct var { 175 struct var *v_link; /* Forward link to next variable */ 176 char *v_name; /* The variable's name */ 177 char *v_value; /* And it's current value */ 178 }; 179 180 struct group { 181 struct group *ge_link; /* Next person in this group */ 182 char *ge_name; /* This person's user name */ 183 }; 184 185 struct grouphead { 186 struct grouphead *g_link; /* Next grouphead in list */ 187 char *g_name; /* Name of this group */ 188 struct group *g_list; /* Users in group. */ 189 }; 190 191 #define NIL ((struct name *) 0) /* The nil pointer for namelists */ 192 #define NONE ((struct cmd *) 0) /* The nil pointer to command tab */ 193 #define NOVAR ((struct var *) 0) /* The nil pointer to variables */ 194 #define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */ 195 #define NOGE ((struct group *) 0) /* The nil group pointer */ 196 197 /* 198 * Structure of the hash table of ignored header fields 199 */ 200 struct ignoretab { 201 int i_count; /* Number of entries */ 202 struct ignore { 203 struct ignore *i_link; /* Next ignored field in bucket */ 204 char *i_field; /* This ignored field */ 205 } *i_head[HSHSIZE]; 206 }; 207 208 /* 209 * Token values returned by the scanner used for argument lists. 210 * Also, sizes of scanner-related things. 211 */ 212 213 #define TEOL 0 /* End of the command line */ 214 #define TNUMBER 1 /* A message number */ 215 #define TDASH 2 /* A simple dash */ 216 #define TSTRING 3 /* A string (possibly containing -) */ 217 #define TDOT 4 /* A "." */ 218 #define TUP 5 /* An "^" */ 219 #define TDOLLAR 6 /* A "$" */ 220 #define TSTAR 7 /* A "*" */ 221 #define TOPEN 8 /* An '(' */ 222 #define TCLOSE 9 /* A ')' */ 223 #define TPLUS 10 /* A '+' */ 224 225 #define REGDEP 2 /* Maximum regret depth. */ 226 #define STRINGLEN 1024 /* Maximum length of string token */ 227 228 /* 229 * Constants for conditional commands. These describe whether 230 * we should be executing stuff or not. 231 */ 232 233 #define CANY 0 /* Execute in send or receive mode */ 234 #define CRCV 1 /* Execute in receive mode only */ 235 #define CSEND 2 /* Execute in send mode only */ 236 237 /* 238 * Kludges to handle the change from setexit / reset to setjmp / longjmp 239 */ 240 241 #define setexit() setjmp(srbuf) 242 #define reset(x) longjmp(srbuf, x) 243 244 /* 245 * Truncate a file to the last character written. This is 246 * useful just before closing an old file that was opened 247 * for read/write. 248 */ 249 #define trunc(stream) ftruncate(fileno(stream), (long) ftell(stream)) 250 251 /* 252 * Forward declarations of routine types to keep lint and cc happy. 253 */ 254 255 FILE *Fdopen(); 256 FILE *collect(); 257 FILE *infix(); 258 FILE *mesedit(); 259 FILE *mespipe(); 260 FILE *popen(); 261 FILE *setinput(); 262 char **unpack(); 263 char *addto(); 264 char *arpafix(); 265 char *calloc(); 266 char *copy(); 267 char *copyin(); 268 char *detract(); 269 char *expand(); 270 char *gets(); 271 char *hfield(); 272 char *name1(); 273 char *nameof(); 274 char *nextword(); 275 char *getenv(); 276 char *findmail(); 277 char *ishfield(); 278 char *malloc(); 279 char *netmap(); 280 char *netname(); 281 char *readtty(); 282 char *reedit(); 283 char *revarpa(); 284 char *rpair(); 285 char *salloc(); 286 char *savestr(); 287 char *skin(); 288 char *snarf(); 289 char *value(); 290 char *vcopy(); 291 char *yankword(); 292 off_t fsize(); 293 struct cmd *lex(); 294 struct grouphead *findgroup(); 295 struct name *cat(); 296 struct name *delname(); 297 struct name *elide(); 298 struct name *extract(); 299 struct name *gexpand(); 300 struct name *map(); 301 struct name *outof(); 302 struct name *put(); 303 struct name *usermap(); 304 struct var *lookup(); 305 long transmit(); 306 int icequal(); 307