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15637ed4 RG |
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(); |