xref: /titanic_52/usr/src/cmd/mailx/hdr/def.h (revision 6a1af1a67532df169a657cce07140be64bdea084)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 1985, 2010, Oracle and/or its affiliates. All rights reserved.
24  */
25 
26 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 /*	All Rights Reserved   */
28 
29 /*
30  * University Copyright- Copyright (c) 1982, 1986, 1988
31  * The Regents of the University of California
32  * All Rights Reserved
33  *
34  * University Acknowledgment- Portions of this document are derived from
35  * software developed by the University of California, Berkeley, and its
36  * contributors.
37  */
38 
39 #ifndef _MAILX_DEF_H
40 #define	_MAILX_DEF_H
41 
42 #ifdef	__cplusplus
43 extern "C" {
44 #endif
45 
46 #include <sys/types.h>
47 #include <signal.h>
48 #include <stdio.h>
49 #include <fcntl.h>
50 #include <string.h>
51 #include <termio.h>
52 #include <setjmp.h>
53 #include <time.h>
54 #include <sys/stat.h>
55 #include <maillock.h>
56 #include <ctype.h>
57 #include <errno.h>
58 #ifndef preSVr4
59 #include <unistd.h>
60 #include <stdlib.h>
61 #include <ulimit.h>
62 #include <wait.h>
63 #endif
64 #ifdef VMUNIX
65 #include <sys/wait.h>
66 #endif
67 #include "local.h"
68 #include "uparm.h"
69 
70 /*
71  * mailx -- a modified version of a University of California at Berkeley
72  *	mail program
73  */
74 
75 #define	SENDESC		'~'		/* Default escape for sending */
76 #define	NMLSIZE		1024		/* max names in a message list */
77 #define	PATHSIZE	1024		/* Size of pathnames throughout */
78 #define	HSHSIZE		59		/* Hash size for aliases and vars */
79 #define	HDRFIELDS	3		/* Number of header fields */
80 #define	LINESIZE	5120		/* max readable line width */
81 #define	STRINGSIZE	((unsigned)128) /* Dynamic allocation units */
82 #define	MAXARGC		1024		/* Maximum list of raw strings */
83 #define	NOSTR		((char *)0)	/* Nill string pointer */
84 #define	NOSTRPTR	((char **)0)	/* Nill pointer to string pointer */
85 #define	NOINTPTR	((int *)0)	/* Nill pointer */
86 #define	MAXEXP		25		/* Maximum expansion of aliases */
87 
88 /* A nice function to string compare */
89 #define	equal(a, b)	(strcmp(a, b) == 0)
90 
91 /* Keep a list of all opened files */
92 #define	fopen(s, t)	my_fopen(s, t)
93 
94 /* Delete closed file from the list */
95 #define	fclose(s)	my_fclose(s)
96 
97 struct message {
98 	off_t	m_offset;		/* offset in block of message */
99 	long	m_size;			/* Bytes in the message */
100 	long	m_lines;		/* Lines in the message */
101 	long	m_clen;			/* Content-Length of the mesg   */
102 	short	m_flag;			/* flags, see below */
103 	char	m_text;			/* TRUE if the contents is text */
104 					/* False otherwise		*/
105 };
106 
107 typedef struct fplst {
108 	FILE	*fp;
109 	struct	fplst	*next;
110 } NODE;
111 
112 /*
113  * flag bits.
114  */
115 
116 #define	MUSED		(1<<0)		/* entry is used, but this bit isn't */
117 #define	MDELETED	(1<<1)		/* entry has been deleted */
118 #define	MSAVED		(1<<2)		/* entry has been saved */
119 #define	MTOUCH		(1<<3)		/* entry has been noticed */
120 #define	MPRESERVE	(1<<4)		/* keep entry in sys mailbox */
121 #define	MMARK		(1<<5)		/* message is marked! */
122 #define	MODIFY		(1<<6)		/* message has been modified */
123 #define	MNEW		(1<<7)		/* message has never been seen */
124 #define	MREAD		(1<<8)		/* message has been read sometime. */
125 #define	MSTATUS		(1<<9)		/* message status has changed */
126 #define	MBOX		(1<<10)		/* Send this to mbox, regardless */
127 #define	MBOXED		(1<<11)		/* message has been sent to mbox */
128 
129 #define	H_AFWDCNT	1		/* "Auto-Forward-Count:"  */
130 #define	H_AFWDFROM	2		/* "Auto-Forwarded-From:" */
131 #define	H_CLEN		3		/* "Content-Length:"	*/
132 #define	H_CTYPE		4		/* "Content-Type:"	*/
133 #define	H_DATE		5		/* "Date:"		*/
134 #define	H_DEFOPTS	6		/* "Default-Options:"	*/
135 #define	H_EOH		7		/* "End-of-Header:"	*/
136 #define	H_FROM		8		/* "From "		*/
137 #define	H_FROM1		9		/* ">From "		*/
138 #define	H_FROM2		10		/* "From: "		*/
139 #define	H_MTSID		11		/* "MTS-Message-ID:"	*/
140 #define	H_MTYPE		12		/* "Message-Type:"	*/
141 #define	H_MVERS		13		/* "Message-Version:"	*/
142 #define	H_MSVC		14		/* "Message-Service:"	*/
143 #define	H_RECEIVED	15		/* "Received:"		*/
144 #define	H_RVERS		16		/* "Report-Version:"	*/
145 #define	H_STATUS	17		/* "Status:"		*/
146 #define	H_SUBJ		18		/* "Subject:"		*/
147 #define	H_TO		19		/* "To:"		*/
148 #define	H_TCOPY		20		/* ">To:"		*/
149 #define	H_TROPTS	21		/* "Transport-Options:"   */
150 #define	H_UAID		22		/* "UA-Content-ID:"	  */
151 
152 #define	H_DAFWDFROM	23	/* Hold A-F-F when sending Del. Notf. */
153 #define	H_DTCOPY	24	/* Hold ">To:" when sending Del. Notf. */
154 #define	H_DRECEIVED	25	/* Hold Rcvd: when sending Del. Notf. */
155 #define	H_CONT		26	/* Continuation of previous line */
156 #define	H_NAMEVALUE	27	/* unrecognized "name: value" hdr line */
157 
158 /*
159  * Format of the command description table.
160  * The actual table is declared and initialized
161  * in lex.c
162  */
163 
164 struct cmd {
165 	char	*c_name;		/* Name of command */
166 	int	(*c_func)(void *);	/* Implementor of the command */
167 	short	c_argtype;		/* Type of arglist (see below) */
168 	short	c_msgflag;		/* Required flags of messages */
169 	short	c_msgmask;		/* Relevant flags of messages */
170 };
171 
172 /* can't initialize unions */
173 
174 #define	c_minargs c_msgflag		/* Minimum argcount for RAWLIST */
175 #define	c_maxargs c_msgmask		/* Max argcount for RAWLIST */
176 
177 /*
178  * Argument types.
179  */
180 
181 #define	MSGLIST	 0		/* Message list type */
182 #define	STRLIST	 1		/* A pure string */
183 #define	RAWLIST	 2		/* Shell string list */
184 #define	NOLIST	 3		/* Just plain 0 */
185 #define	NDMLIST	 4		/* Message list, no defaults */
186 
187 #define	P	040		/* Autoprint dot after command */
188 #define	I	0100		/* Interactive command bit */
189 #define	M	0200		/* Legal from send mode bit */
190 #define	W	0400		/* Illegal when read only bit */
191 #define	F	01000		/* Is a conditional command */
192 #define	T	02000		/* Is a transparent command */
193 #define	R	04000		/* Cannot be called from collect */
194 
195 /*
196  * Oft-used mask values
197  */
198 
199 #define	MMNORM	(MDELETED|MSAVED) /* Look at both save and delete bits */
200 #define	MMNDEL	MDELETED	/* Look only at deleted bit */
201 
202 /*
203  * Structure used to return a break down of a head
204  * line
205  */
206 
207 struct headline {
208 	char	*l_from;	/* The name of the sender */
209 	char	*l_tty;		/* His tty string (if any) */
210 	char	*l_date;	/* The entire date string */
211 };
212 
213 #define	GTO	1		/* Grab To: line */
214 #define	GSUBJECT 2		/* Likewise, Subject: line */
215 #define	GCC	4		/* And the Cc: line */
216 #define	GBCC	8		/* And also the Bcc: line */
217 #define	GDEFOPT	16		/* And the Default-Options: lines */
218 #define	GNL	32		/* Print blank line after */
219 #define	GOTHER	64		/* Other header lines */
220 #define	GMASK	(GTO|GSUBJECT|GCC|GBCC|GDEFOPT|GNL|GOTHER)
221 				/* Mask of all header lines */
222 #define	GDEL	128		/* Entity removed from list */
223 #define	GCLEN	256		/* Include Content-Length header */
224 
225 /*
226  * Structure used to pass about the current
227  * state of the user-typed message header.
228  */
229 
230 struct header {
231 	char	*h_to;			/* Dynamic "To:" string */
232 	char	*h_subject;		/* Subject string */
233 	char	*h_cc;			/* Carbon copies string */
234 	char	*h_bcc;			/* Blind carbon copies */
235 	char	*h_defopt;		/* Default options */
236 	char	**h_others;		/* Other header lines */
237 	int	h_seq;			/* Sequence for optimization */
238 };
239 
240 /*
241  * Structure of namelist nodes used in processing
242  * the recipients of mail and aliases and all that
243  * kind of stuff.
244  */
245 
246 struct name {
247 	struct	name *n_flink;		/* Forward link in list. */
248 	struct	name *n_blink;		/* Backward list link */
249 	short	n_type;			/* From which list it came */
250 	char	*n_name;		/* This fella's name */
251 	char	*n_full;		/* Full name */
252 };
253 
254 /*
255  * Structure of a variable node.  All variables are
256  * kept on a singly-linked list of these, rooted by
257  * "variables"
258  */
259 
260 struct var {
261 	struct	var *v_link;		/* Forward link to next variable */
262 	char	*v_name;		/* The variable's name */
263 	char	*v_value;		/* And it's current value */
264 };
265 
266 struct mgroup {
267 	struct	mgroup *ge_link;	/* Next person in this group */
268 	char	*ge_name;		/* This person's user name */
269 };
270 
271 struct grouphead {
272 	struct	grouphead *g_link;	/* Next grouphead in list */
273 	char	*g_name;		/* Name of this group */
274 	struct	mgroup *g_list;		/* Users in group. */
275 };
276 
277 #define	NIL	((struct name *)0)	/* The nil pointer for namelists */
278 #define	NONE	((struct cmd *)0)	/* The nil pointer to command tab */
279 #define	NOVAR	((struct var *)0)	/* The nil pointer to variables */
280 #define	NOGRP	((struct grouphead *)0) /* The nil grouphead pointer */
281 #define	NOGE	((struct mgroup *)0)	/* The nil group pointer */
282 #define	NOFP	((struct fplst *)0)	/* The nil file pointer */
283 
284 #define	TRUE	1
285 #define	FALSE	0
286 
287 #define	DEADPERM	0600		/* permissions of dead.letter */
288 #define	TEMPPERM	0600		/* permissions of temp files */
289 #define	MBOXPERM	0600		/* permissions of ~/mbox */
290 
291 #ifndef	MFMODE
292 #define	MFMODE		0600		/* create mode for `/var/mail' files */
293 #endif
294 
295 /*
296  * Structure of the hash table of ignored header fields
297  */
298 struct ignore {
299 	struct ignore	*i_link;	/* Next ignored field in bucket */
300 	char		*i_field;	/* This ignored field */
301 };
302 
303 #ifdef preSVr4
304 struct utimbuf {
305 	time_t	actime;
306 	time_t	modtime;
307 };
308 #else
309 #include	<utime.h>
310 #endif
311 
312 /*
313  * Token values returned by the scanner used for argument lists.
314  * Also, sizes of scanner-related things.
315  */
316 
317 #define	TEOL		0		/* End of the command line */
318 #define	TNUMBER		1		/* A message number */
319 #define	TDASH		2		/* A simple dash */
320 #define	TSTRING		3		/* A string (possibly containing -) */
321 #define	TDOT		4		/* A "." */
322 #define	TUP		5		/* An "^" */
323 #define	TDOLLAR		6		/* A "$" */
324 #define	TSTAR		7		/* A "*" */
325 #define	TOPEN		8		/* An '(' */
326 #define	TCLOSE		9		/* A ')' */
327 #define	TPLUS		10		/* A '+' */
328 
329 #define	REGDEP		2		/* Maximum regret depth. */
330 #define	STRINGLEN	1024		/* Maximum length of string token */
331 
332 /*
333  * Constants for conditional commands.  These describe whether
334  * we should be executing stuff or not.
335  */
336 
337 #define	CANY		0		/* Execute in send or receive mode */
338 #define	CRCV		1		/* Execute in receive mode only */
339 #define	CSEND		2		/* Execute in send mode only */
340 #define	CTTY		3		/* Execute if attached to a tty only */
341 #define	CNOTTY		4		/* Execute if not attached to a tty */
342 
343 /*
344  * Flags for msend().
345  */
346 
347 #define	M_IGNORE	1		/* Do "ignore/retain" processing */
348 #define	M_SAVING	2		/* Saving to a file/folder */
349 
350 /*
351  * VM/UNIX has a vfork system call which is faster than forking.  If we
352  * don't have it, fork(2) will do . . .
353  */
354 
355 #if !defined(VMUNIX) && defined(preSVr4)
356 #define	vfork()	fork()
357 #endif
358 #ifndef	SIGRETRO
359 #define	sigchild()
360 #endif
361 
362 
363 /*
364  * 4.2bsd signal interface help...
365  */
366 #ifdef VMUNIX
367 #define	sigset(s, a)	signal(s, a)
368 #define	sigsys(s, a)	signal(s, a)
369 #else
370 #ifndef preSVr4
371 /* SVr4 version of sigset() in fio.c */
372 #define	sigsys(s, a)	signal(s, a)
373 #define	setjmp(x)	sigsetjmp((x), 1)
374 #define	longjmp		siglongjmp
375 #define	jmp_buf		sigjmp_buf
376 #else
377 #define	OLD_BSD_SIGS
378 #endif
379 #endif
380 
381 /*
382  * Truncate a file to the last character written. This is
383  * useful just before closing an old file that was opened
384  * for read/write.
385  */
386 #define	trunc(stream)	ftruncate(fileno(stream), (long)ftell(stream))
387 
388 /*
389  * The pointers for the string allocation routines,
390  * there are NSPACE independent areas.
391  * The first holds STRINGSIZE bytes, the next
392  * twice as much, and so on.
393  */
394 
395 #define	NSPACE	25			/* Total number of string spaces */
396 struct strings {
397 	char	*s_topFree;		/* Beginning of this area */
398 	char	*s_nextFree;		/* Next alloctable place here */
399 	unsigned s_nleft;		/* Number of bytes left here */
400 };
401 
402 /* The following typedefs must be used in SVR4 */
403 #ifdef preSVr4
404 #ifndef sun
405 typedef int gid_t;
406 typedef int uid_t;
407 typedef int mode_t;
408 typedef int pid_t;
409 #endif
410 #endif
411 
412 #define	STSIZ	40
413 #define	TMPSIZ	14
414 /*
415  * Forward declarations of routine types to keep lint and cc happy.
416  */
417 
418 extern int		Copy(int *msgvec);
419 extern FILE		*Fdopen(int fildes, char *mode);
420 extern int		Followup(int *msgvec);
421 extern char		*Getf(register char *s);
422 extern int		More(int *msgvec);
423 extern int		Respond(int *msgvec);
424 extern int		Save(int *msgvec);
425 extern int		Sendm(char *str);
426 extern int		Sput(char str[]);
427 extern int		Type(int *msgvec);
428 extern void		Verhogen(void);
429 extern char		*addone(char hf[], char news[]);
430 extern char		*addto(char hf[], char news[]);
431 extern void		alter(char name[]);
432 extern int		alternates(char **namelist);
433 extern void		announce(void);
434 extern int		any(int ch, char *str);
435 extern int		anyof(register char *s1, register char *s2);
436 extern int		argcount(char **argv);
437 extern void		assign(char name[], char value[]);
438 extern int		blankline(const char linebuf[]);
439 extern struct name	*cat(struct name *n1, struct name *n2);
440 extern FILE		*collect(struct header *hp);
441 extern void		commands(void);
442 extern char		*copy(char *str1, char *str2);
443 extern int		copycmd(char str[]);
444 extern int		deassign(register char *s);
445 extern int		delm(int *msgvec);
446 extern struct name	*delname(register struct name *np, char name[]);
447 extern int		deltype(int msgvec[]);
448 extern char		*detract(register struct name *np, int ntype);
449 extern int		docomma(char *s);
450 extern int		dopipe(char str[]);
451 extern int		dosh(char *str);
452 extern int		echo(register char **argv);
453 extern int		editor(int *msgvec);
454 extern int		edstop(int noremove);
455 extern struct name	*elide(struct name *names);
456 extern int		elsecmd(void);
457 extern int		endifcmd(void);
458 extern int		execute(char linebuf[], int contxt);
459 extern char		*expand(char *name);
460 extern struct name	*extract(char line[], int arg_ntype);
461 extern int		fferror(FILE *iob);
462 extern int		field(char str[]);
463 extern int		file(char **argv);
464 extern struct grouphead	*findgroup(char name[]);
465 extern void		findmail(char *name);
466 extern int		first(int f, int m);
467 extern void		flush(void);
468 extern int		folders(char **arglist);
469 extern int		followup(int *msgvec);
470 extern int		from(int *msgvec);
471 extern off_t		fsize(FILE *iob);
472 extern int		getfold(char *name);
473 extern int	gethfield(register FILE *f, char linebuf[], register long rem);
474 extern int	getaline(char *line, int size, FILE *f, int *hasnulls);
475 extern int	getmessage(char *buf, int *vector, int flags);
476 extern int	getmsglist(char *buf, int *vector, int flags);
477 extern int	getname(uid_t uid, char namebuf[]);
478 extern int	getrawlist(char line[], char **argv, int argc);
479 extern void	getrecf(char *buf, char *recfile,
480 		    int useauthor, int sz_recfile);
481 extern uid_t	getuserid(char name[]);
482 extern int	grabh(register struct header *hp, int gflags, int subjtop);
483 extern int	group(char **argv);
484 extern void	hangup(int);
485 extern int	hash(char name[]);
486 extern char	*hcontents(char hfield[]);
487 extern int	headerp(register char *line);
488 extern int	headers(int *msgvec);
489 extern int	help(void);
490 extern char	*helppath(char *file);
491 extern char	*hfield(char field[], struct message *mp,
492 		    char *(*add)(char *, char *));
493 extern void	holdsigs(void);
494 extern int	icequal(register char *s1, register char *s2);
495 extern int	ifcmd(char **argv);
496 extern int	igfield(char *list[]);
497 extern int	inc(void);
498 extern void	inithost(void);
499 extern int	isdir(char name[]);
500 extern int	ishead(char linebuf[]);
501 extern int	ishfield(char linebuf[], char field[]);
502 extern int	ishost(char *sys, char *rest);
503 extern int	isign(char *field, int saving);
504 extern void	istrcpy(char *dest, int dstsize, char *src);
505 extern void	lcwrite(char *fn, FILE *fi, FILE *fo, int addnl);
506 extern void	load(char *name);
507 extern int	loadmsg(char str[]);
508 extern int	lock(FILE *fp, char *mode, int blk);
509 extern void	lockmail(void);
510 extern int	mail(char **people);
511 extern void	mail1(struct header *hp, int use_to, char *orig_to);
512 extern void	mapf(register struct name *np, char *from);
513 extern int	mboxit(int msgvec[]);
514 extern void	mechk(struct name *names);
515 extern int	member(register char *realfield,
516 		    register struct ignore **table);
517 extern int	messize(int *msgvec);
518 extern void	minit(void);
519 extern int	more(int *msgvec);
520 extern long	msend(struct message *mailp, FILE *obuf,
521 		    int flag, int (*fp)(const char *, FILE *));
522 extern int	my_fclose(register FILE *iop);
523 extern FILE	*my_fopen(char *file, char *mode);
524 extern char	*nameof(register struct message *mp);
525 extern char	*netmap(char name[], char from[]);
526 extern int	newfileinfo(int start);
527 extern int	next(int *msgvec);
528 extern int	npclose(FILE *ptr);
529 extern FILE	*npopen(char *cmd, char *mode);
530 extern char	*nstrcpy(char *dst, int dstsize, char *src);
531 extern char	*nstrcat(char *dst, int dstsize, char *src);
532 extern int	null(char *e);
533 extern int	outof(struct name *names, FILE *fo);
534 extern struct name	*outpre(struct name *to);
535 extern void	panic(char *str);
536 extern void	parse(char line[], struct headline *hl, char pbuf[]);
537 extern int	pcmdlist(void);
538 extern int	pdot(void);
539 extern int	preserve(int *msgvec);
540 extern void	printgroup(char name[]);
541 extern void	printhead(int mesg);
542 extern int	puthead(struct header *hp, FILE *fo, int w, long clen);
543 extern int	pversion(char *e);
544 extern void	quit(int noremove);
545 extern int	readline(FILE *ibuf, char *linebuf);
546 extern void	receipt(struct message *mp);
547 extern void	relsesigs(void);
548 extern int	removefile(char name[]);
549 extern int	replyall(int *msgvec);
550 extern int	replysender(int *msgvec);
551 extern int	respond(int *msgvec);
552 extern int	retfield(char *list[]);
553 extern int	rexit(int e);
554 extern char	*safeexpand(char name[]);
555 extern void	*salloc(unsigned size);
556 extern void	*srealloc(void *optr, unsigned size);
557 extern int	samebody(register char *user, register char *addr,
558 		    int fuzzy);
559 extern int	save(char str[]);
560 extern void	savedead(int s);
561 extern char	*savestr(char *str);
562 extern int	schdir(char *str);
563 extern int	screensize(void);
564 extern int	scroll(char arg[]);
565 extern int	sendm(char *str);
566 extern int	set(char **arglist);
567 extern void	setclen(register struct message *mp);
568 extern int	setfile(char *name, int isedit);
569 extern FILE	*setinput(register struct message *mp);
570 extern void	setptr(register FILE *ibuf);
571 extern int	shell(char *str);
572 #ifndef sigchild
573 extern void		sigchild(void);
574 #endif
575 #ifndef sigset
576 extern void		(*sigset())();
577 #endif
578 extern char		*skin(char *name);
579 extern char		*snarf(char linebuf[], int *flag, int erf);
580 extern int		source(char name[]);
581 extern char		*splice(char *addr, char *hdr);
582 extern int		sput(char str[]);
583 extern void		sreset(void);
584 extern void		stop(int s);
585 extern int		stouch(int msgvec[]);
586 extern int		substr(char *string1, char *string2);
587 extern int		swrite(char str[]);
588 extern struct name	*tailof(struct name *name);
589 extern void		tinit(void);
590 extern int		tmail(void);
591 extern int		top(int *msgvec);
592 extern void		touch(int mesg);
593 extern struct name	*translate(struct name *np);
594 extern int		type(int *msgvec);
595 extern int		undelete(int *msgvec);
596 extern int		ungroup(char **argv);
597 extern int		unigfield(char *list[]);
598 extern void		unlockmail(void);
599 extern char		**unpack(struct name *np);
600 extern int		unread(int msgvec[]);
601 extern int		unretfield(char *list[]);
602 extern int		unset(char **arglist);
603 extern int		unstack(void);
604 extern char		*unuucp(char *name);
605 extern struct name	*usermap(struct name *names);
606 extern char		*value(char name[]);
607 extern char		*vcopy(char str[]);
608 extern void		vfree(register char *cp);
609 extern int		visual(int *msgvec);
610 extern char		*yankword(char *name, char *word, int sz, int comma);
611 
612 /*
613  * These functions are defined in libmail.a
614  */
615 #ifdef	__cplusplus
616 extern "C" {
617 #endif
618 extern int		delempty(mode_t, char *);
619 extern char		*maildomain(void);
620 extern void		touchlock(void);
621 extern char		*xgetenv(char *);
622 extern int		xsetenv(char *);
623 #ifdef	__cplusplus
624 }
625 #endif
626 
627 /*
628  * Standard functions from the C library.
629  * These are all defined in <stdlib.h> and <wait.h> in SVr4.
630  */
631 #ifdef preSVr4
632 extern long		atol();
633 extern char		*getcwd();
634 extern char		*calloc();
635 extern char		*getenv();
636 extern void		exit();
637 extern void		free();
638 extern char		*malloc();
639 extern time_t		time();
640 extern long		ulimit();
641 extern int		utime();
642 extern int		wait();
643 extern int		fputs();
644 #endif
645 
646 #ifdef	__cplusplus
647 }
648 #endif
649 
650 #endif	/* _MAILX_DEF_H */
651