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761330fe | 1 | /* |
a12ff486 KB |
2 | * Copyright (c) 1980, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
761330fe | 4 | * |
f15db449 | 5 | * %sccs.include.redist.c% |
0c5f72fb | 6 | * |
a12ff486 | 7 | * @(#)def.h 8.1 (Berkeley) %G% |
761330fe | 8 | */ |
43101bb9 | 9 | |
43101bb9 KS |
10 | /* |
11 | * Mail -- a mail program | |
12 | * | |
43101bb9 KS |
13 | * Author: Kurt Shoens (UCB) March 25, 1978 |
14 | */ | |
15 | ||
a0d23834 KB |
16 | #include <sys/param.h> |
17 | #include <sys/stat.h> | |
18 | #include <sys/time.h> | |
19 | ||
20 | #include <signal.h> | |
21 | #include <sgtty.h> | |
22 | #include <unistd.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <ctype.h> | |
26 | #include <string.h> | |
27 | #include "pathnames.h" | |
28 | ||
435e8dff | 29 | #define APPEND /* New mail goes to end of mailbox */ |
43101bb9 KS |
30 | |
31 | #define ESCAPE '~' /* Default escape for sending */ | |
7e9e94c1 | 32 | #define NMLSIZE 1024 /* max names in a message list */ |
f674e088 | 33 | #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */ |
7e9e94c1 | 34 | #define HSHSIZE 59 /* Hash size for aliases and vars */ |
74f7ed29 | 35 | #define LINESIZE BUFSIZ /* max readable line width */ |
43101bb9 | 36 | #define STRINGSIZE ((unsigned) 128)/* Dynamic allocation units */ |
7e9e94c1 | 37 | #define MAXARGC 1024 /* Maximum list of raw strings */ |
43101bb9 KS |
38 | #define NOSTR ((char *) 0) /* Null string pointer */ |
39 | #define MAXEXP 25 /* Maximum expansion of aliases */ | |
828615a1 | 40 | |
43101bb9 KS |
41 | #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */ |
42 | ||
43 | struct message { | |
44 | short m_flag; /* flags, see below */ | |
45 | short m_block; /* block number of this message */ | |
46 | short m_offset; /* offset in block of message */ | |
ee0b03d5 | 47 | long m_size; /* Bytes in the message */ |
43101bb9 KS |
48 | short m_lines; /* Lines in the message */ |
49 | }; | |
50 | ||
51 | /* | |
52 | * flag bits. | |
53 | */ | |
54 | ||
8a23b6e3 KS |
55 | #define MUSED (1<<0) /* entry is used, but this bit isn't */ |
56 | #define MDELETED (1<<1) /* entry has been deleted */ | |
57 | #define MSAVED (1<<2) /* entry has been saved */ | |
58 | #define MTOUCH (1<<3) /* entry has been noticed */ | |
59 | #define MPRESERVE (1<<4) /* keep entry in sys mailbox */ | |
60 | #define MMARK (1<<5) /* message is marked! */ | |
61 | #define MODIFY (1<<6) /* message has been modified */ | |
62 | #define MNEW (1<<7) /* message has never been seen */ | |
63 | #define MREAD (1<<8) /* message has been read sometime. */ | |
64 | #define MSTATUS (1<<9) /* message status has changed */ | |
65 | #define MBOX (1<<10) /* Send this to mbox, regardless */ | |
43101bb9 | 66 | |
828615a1 EW |
67 | /* |
68 | * Given a file address, determine the block number it represents. | |
69 | */ | |
70 | #define blockof(off) ((int) ((off) / 4096)) | |
71 | #define offsetof(off) ((int) ((off) % 4096)) | |
72 | #define positionof(block, offset) ((off_t)(block) * 4096 + (offset)) | |
73 | ||
43101bb9 KS |
74 | /* |
75 | * Format of the command description table. | |
76 | * The actual table is declared and initialized | |
77 | * in lex.c | |
78 | */ | |
43101bb9 KS |
79 | struct cmd { |
80 | char *c_name; /* Name of command */ | |
81 | int (*c_func)(); /* Implementor of the command */ | |
82 | short c_argtype; /* Type of arglist (see below) */ | |
83 | short c_msgflag; /* Required flags of messages */ | |
84 | short c_msgmask; /* Relevant flags of messages */ | |
85 | }; | |
86 | ||
87 | /* Yechh, can't initialize unions */ | |
88 | ||
89 | #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */ | |
90 | #define c_maxargs c_msgmask /* Max argcount for RAWLIST */ | |
91 | ||
92 | /* | |
93 | * Argument types. | |
94 | */ | |
95 | ||
96 | #define MSGLIST 0 /* Message list type */ | |
97 | #define STRLIST 1 /* A pure string */ | |
98 | #define RAWLIST 2 /* Shell string list */ | |
99 | #define NOLIST 3 /* Just plain 0 */ | |
100 | #define NDMLIST 4 /* Message list, no defaults */ | |
101 | ||
102 | #define P 040 /* Autoprint dot after command */ | |
103 | #define I 0100 /* Interactive command bit */ | |
7798c88e | 104 | #define M 0200 /* Legal from send mode bit */ |
6fff2fd5 | 105 | #define W 0400 /* Illegal when read only bit */ |
726904d6 | 106 | #define F 01000 /* Is a conditional command */ |
6c0822ea | 107 | #define T 02000 /* Is a transparent command */ |
a642148b | 108 | #define R 04000 /* Cannot be called from collect */ |
43101bb9 KS |
109 | |
110 | /* | |
111 | * Oft-used mask values | |
112 | */ | |
113 | ||
114 | #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */ | |
115 | #define MMNDEL MDELETED /* Look only at deleted bit */ | |
116 | ||
117 | /* | |
118 | * Structure used to return a break down of a head | |
119 | * line (hats off to Bill Joy!) | |
120 | */ | |
121 | ||
122 | struct headline { | |
123 | char *l_from; /* The name of the sender */ | |
124 | char *l_tty; /* His tty string (if any) */ | |
125 | char *l_date; /* The entire date string */ | |
126 | }; | |
127 | ||
128 | #define GTO 1 /* Grab To: line */ | |
129 | #define GSUBJECT 2 /* Likewise, Subject: line */ | |
130 | #define GCC 4 /* And the Cc: line */ | |
131 | #define GBCC 8 /* And also the Bcc: line */ | |
132 | #define GMASK (GTO|GSUBJECT|GCC|GBCC) | |
133 | /* Mask of places from whence */ | |
134 | ||
135 | #define GNL 16 /* Print blank line after */ | |
136 | #define GDEL 32 /* Entity removed from list */ | |
137 | #define GCOMMA 64 /* detract puts in commas */ | |
138 | ||
139 | /* | |
140 | * Structure used to pass about the current | |
141 | * state of the user-typed message header. | |
142 | */ | |
143 | ||
144 | struct header { | |
3d6f01e5 EW |
145 | struct name *h_to; /* Dynamic "To:" string */ |
146 | char *h_subject; /* Subject string */ | |
147 | struct name *h_cc; /* Carbon copies string */ | |
148 | struct name *h_bcc; /* Blind carbon copies */ | |
149 | struct name *h_smopts; /* Sendmail options */ | |
43101bb9 KS |
150 | }; |
151 | ||
152 | /* | |
153 | * Structure of namelist nodes used in processing | |
154 | * the recipients of mail and aliases and all that | |
155 | * kind of stuff. | |
156 | */ | |
157 | ||
158 | struct name { | |
159 | struct name *n_flink; /* Forward link in list. */ | |
160 | struct name *n_blink; /* Backward list link */ | |
161 | short n_type; /* From which list it came */ | |
162 | char *n_name; /* This fella's name */ | |
163 | }; | |
164 | ||
165 | /* | |
166 | * Structure of a variable node. All variables are | |
167 | * kept on a singly-linked list of these, rooted by | |
168 | * "variables" | |
169 | */ | |
170 | ||
171 | struct var { | |
172 | struct var *v_link; /* Forward link to next variable */ | |
173 | char *v_name; /* The variable's name */ | |
174 | char *v_value; /* And it's current value */ | |
175 | }; | |
176 | ||
177 | struct group { | |
178 | struct group *ge_link; /* Next person in this group */ | |
179 | char *ge_name; /* This person's user name */ | |
180 | }; | |
181 | ||
182 | struct grouphead { | |
183 | struct grouphead *g_link; /* Next grouphead in list */ | |
184 | char *g_name; /* Name of this group */ | |
185 | struct group *g_list; /* Users in group. */ | |
186 | }; | |
187 | ||
188 | #define NIL ((struct name *) 0) /* The nil pointer for namelists */ | |
189 | #define NONE ((struct cmd *) 0) /* The nil pointer to command tab */ | |
190 | #define NOVAR ((struct var *) 0) /* The nil pointer to variables */ | |
191 | #define NOGRP ((struct grouphead *) 0)/* The nil grouphead pointer */ | |
192 | #define NOGE ((struct group *) 0) /* The nil group pointer */ | |
193 | ||
b6264a3d KS |
194 | /* |
195 | * Structure of the hash table of ignored header fields | |
196 | */ | |
887efe38 EW |
197 | struct ignoretab { |
198 | int i_count; /* Number of entries */ | |
199 | struct ignore { | |
200 | struct ignore *i_link; /* Next ignored field in bucket */ | |
201 | char *i_field; /* This ignored field */ | |
202 | } *i_head[HSHSIZE]; | |
b6264a3d KS |
203 | }; |
204 | ||
43101bb9 KS |
205 | /* |
206 | * Token values returned by the scanner used for argument lists. | |
207 | * Also, sizes of scanner-related things. | |
208 | */ | |
209 | ||
210 | #define TEOL 0 /* End of the command line */ | |
211 | #define TNUMBER 1 /* A message number */ | |
212 | #define TDASH 2 /* A simple dash */ | |
213 | #define TSTRING 3 /* A string (possibly containing -) */ | |
214 | #define TDOT 4 /* A "." */ | |
215 | #define TUP 5 /* An "^" */ | |
216 | #define TDOLLAR 6 /* A "$" */ | |
217 | #define TSTAR 7 /* A "*" */ | |
218 | #define TOPEN 8 /* An '(' */ | |
219 | #define TCLOSE 9 /* A ')' */ | |
220 | #define TPLUS 10 /* A '+' */ | |
a8a981d5 | 221 | #define TERROR 11 /* A lexical error */ |
43101bb9 KS |
222 | |
223 | #define REGDEP 2 /* Maximum regret depth. */ | |
7e9e94c1 | 224 | #define STRINGLEN 1024 /* Maximum length of string token */ |
43101bb9 | 225 | |
6c0822ea KS |
226 | /* |
227 | * Constants for conditional commands. These describe whether | |
228 | * we should be executing stuff or not. | |
229 | */ | |
230 | ||
231 | #define CANY 0 /* Execute in send or receive mode */ | |
232 | #define CRCV 1 /* Execute in receive mode only */ | |
233 | #define CSEND 2 /* Execute in send mode only */ | |
234 | ||
43101bb9 KS |
235 | /* |
236 | * Kludges to handle the change from setexit / reset to setjmp / longjmp | |
237 | */ | |
238 | ||
239 | #define setexit() setjmp(srbuf) | |
240 | #define reset(x) longjmp(srbuf, x) | |
241 | ||
28bcd25d SL |
242 | /* |
243 | * Truncate a file to the last character written. This is | |
244 | * useful just before closing an old file that was opened | |
245 | * for read/write. | |
246 | */ | |
247 | #define trunc(stream) ftruncate(fileno(stream), (long) ftell(stream)) |