1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32struct name *cat(struct name *, struct name *);
33struct name *delname(struct name *, char *);
34struct name *elide(struct name *);
35struct name *extract(char *, int);
36struct name *gexpand(struct name *, struct grouphead *, int, int);
37struct name *nalloc(char *, int);
38struct name *outof(struct name *, FILE *, struct header *);
39struct name *put(struct name *, struct name *);
40struct name *tailof(struct name *);
41struct name *usermap(struct name *);
42FILE	*Fdopen(int, const char *);
43FILE	*Fopen(const char *, const char *);
44FILE	*Popen(char *, const char *);
45FILE	*collect(struct header *, int);
46char	*copyin(char *, char **);
47char	*detract(struct name *, int);
48char	*expand(char *);
49char	*getdeadletter(void);
50char	*getname(uid_t);
51char	*hfield(const char *, struct message *);
52FILE	*infix(struct header *, FILE *);
53char	*ishfield(char *, char *, const char *);
54char	*name1(struct message *, int);
55char	*nameof(struct message *, int);
56char	*nextword(char *, char *);
57char	*readtty(const char *, char *);
58char 	*reedit(char *);
59FILE	*run_editor(FILE *, off_t, int, int);
60char	*salloc(int);
61char	*savestr(char *);
62FILE	*setinput(struct message *);
63char	*skin(char *);
64char	*skip_comment(char *);
65char	*snarf(char *, int *);
66char	*username(void);
67char	*value(const char *);
68char	*vcopy(const char *);
69char	*yankword(char *, char *);
70char	*yanklogin(char *, char *);
71int	 Fclose(FILE *);
72int	 More(void *);
73int	 Pclose(FILE *);
74int	 Respond(void *);
75int	 Type(void *);
76int	 doRespond(int *);
77int	 dorespond(int *);
78void	 alter(char *);
79int	 alternates(void *);
80void	 announce(void);
81int	 append(struct message *, FILE *);
82int	 argcount(char **);
83void	 assign(const char *, const char *);
84int	 bangexp(char *, size_t);
85void	 brokpipe(int);
86int	 charcount(char *, int);
87int	 check(int, int);
88void	 clob1(int);
89int	 clobber(void *);
90void	 close_all_files(void);
91int	 cmatch(char *, char *);
92void	 collhup(int);
93void	 collint(int);
94void	 collstop(int);
95void	 commands(void);
96int	 copycmd(void *v);
97int	 core(void *);
98int	 count(struct name *);
99int	 deletecmd(void *);
100int	 delm(int *);
101int	 deltype(void *);
102void	 demail(void);
103int	 diction(const void *, const void *);
104int	 dosh(void *);
105int	 echo(void *);
106int	 edit1(int *, int);
107int	 editor(void *);
108void	 edstop(void);
109int	 elsecmd(void *);
110int	 endifcmd(void *);
111int	 evalcol(int);
112int	 execute(char *, int);
113int	 exwrite(char *, FILE *, int);
114void	 fail(const char *, const char *);
115int	 file(void *);
116struct grouphead *
117	 findgroup(char *);
118void	 findmail(char *, char *, int);
119int	 first(int, int);
120void	 fixhead(struct header *, struct name *);
121void	 fmt(const char *, struct name *, FILE *, int);
122int	 folders(void *);
123int	 forward(char *, FILE *, char *, int);
124void	 free_child(int);
125int	 from(void *);
126off_t	 fsize(FILE *);
127int	 getfold(char *, int);
128int	 gethfield(FILE *, char *, int, char **);
129int	 getmsglist(char *, int *, int);
130int	 getrawlist(char *, char **, int);
131uid_t	 getuserid(char *);
132int	 grabh(struct header *, int);
133int	 group(void *);
134void	 hangup(int);
135int	 hash(const char *);
136void	 hdrstop(int);
137int	 headers(void *);
138int	 help(void *);
139void	 holdsigs(void);
140int	 ifcmd(void *);
141int	 igcomp(const void *, const void *);
142int	 igfield(void *);
143int	 ignore1(char **, struct ignoretab *, const char *);
144int	 igshow(struct ignoretab *, const char *);
145int	 inc(void *);
146int	 incfile(void);
147void	 intr(int);
148int	 isdate(char *);
149int	 isdir(char *);
150int	 isfileaddr(char *);
151int	 ishead(char *);
152int	 isign(const char *, struct ignoretab [2]);
153int	 isprefix(const char *, const char *);
154void	 istrncpy(char *, const char *, size_t);
155const struct cmd *
156	 lex(char *);
157void	 load(char *);
158struct var *
159	 lookup(const char *);
160int	 mail(struct name *,
161	    struct name *, struct name *, struct name *, char *, char *);
162void	 mail1(struct header *, int);
163void	 makemessage(FILE *, int);
164void	 mark(int);
165int	 markall(char *, int);
166int	 matchsender(char *, int);
167int	 matchfield(char *, int);
168int	 mboxit(void *);
169int	 member(char *, struct ignoretab *);
170void	 mesedit(FILE *, int);
171void	 mespipe(FILE *, char *);
172int	 messize(void *);
173int	 metamess(int, int);
174int	 more(void *);
175int	 newfileinfo(int);
176int	 next(void *);
177int	 null(void *);
178void	 parse(char *, struct headline *, char *);
179int	 pcmdlist(void *);
180int	 pdot(void *);
181void	 prepare_child(sigset_t *, int, int);
182int	 preserve(void *);
183void	 prettyprint(struct name *);
184void	 printgroup(char *);
185void	 printhead(int);
186int	 puthead(struct header *, FILE *, int);
187int	 putline(FILE *, char *, int);
188int	 pversion(void *);
189void	 quit(void);
190int	 quitcmd(void *);
191int	 readline(FILE *, char *, int);
192void	 register_file(FILE *, int, int);
193void	 regret(int);
194void	 relsesigs(void);
195int	 respond(void *);
196int	 retfield(void *);
197int	 rexit(void *);
198int	 rm(char *);
199int	 run_command(char *, sigset_t *, int, int, ...);
200int	 save(void *v);
201int	 save1(char *, int, const char *, struct ignoretab *);
202void	 savedeadletter(FILE *);
203int	 saveigfield(void *);
204int	 savemail(char *, FILE *);
205int	 saveretfield(void *);
206int	 scan(char **);
207void	 scaninit(void);
208int	 schdir(void *);
209int	 screensize(void);
210int	 scroll(void *);
211int	 sendmessage(struct message *, FILE *, struct ignoretab *, char *);
212int	 sendmail(void *);
213int	 set(void *);
214int	 setfile(char *);
215void	 setmsize(int);
216void	 setptr(FILE *, off_t);
217void	 setscreensize(void);
218int	 shell(void *);
219void	 sigchild(int);
220void	 sort(char **);
221int	 source(void *);
222void	 spreserve(void);
223void	 sreset(void);
224int	 start_command(char *, sigset_t *, int, int, ...);
225void	 statusput(struct message *, FILE *, char *);
226void	 stop(int);
227int	 stouch(void *);
228int	 swrite(void *);
229void	 tinit(void);
230int	 top(void *);
231void	 touch(struct message *);
232void	 ttyint(int);
233void	 ttystop(int);
234int	 type(void *);
235int	 type1(int *, int, int);
236int	 undeletecmd(void *);
237void	 unmark(int);
238char	**unpack(struct name *);
239int	 unread(void *);
240void	 unregister_file(FILE *);
241int	 unset(void *);
242int	 unstack(void);
243void	 vfree(char *);
244int	 visual(void *);
245int	 wait_child(int);
246int	 wait_command(int);
247int	 writeback(FILE *);
248
249extern char *__progname;
250extern char *tmpdir;
251