1/*-
2 * Copyright (c) 1980, 1993
3 *	The Regents of the University of California.  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 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef lint
31#if 0
32static char sccsid[] = "@(#)cmd1.c	8.2 (Berkeley) 4/20/95";
33#endif
34#endif /* not lint */
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#include "rcv.h"
39#include "extern.h"
40
41/*
42 * Mail -- a mail program
43 *
44 * User commands.
45 */
46
47extern const struct cmd cmdtab[];
48
49/*
50 * Print the current active headings.
51 * Don't change dot if invoker didn't give an argument.
52 */
53
54static int screen;
55
56int
57headers(int *msgvec)
58{
59	int n, mesg, flag, size;
60	struct message *mp;
61
62	size = screensize();
63	n = msgvec[0];
64	if (n != 0)
65		screen = (n-1)/size;
66	if (screen < 0)
67		screen = 0;
68	mp = &message[screen * size];
69	if (mp >= &message[msgCount])
70		mp = &message[msgCount - size];
71	if (mp < &message[0])
72		mp = &message[0];
73	flag = 0;
74	mesg = mp - &message[0];
75	if (dot != &message[n-1])
76		dot = mp;
77	for (; mp < &message[msgCount]; mp++) {
78		mesg++;
79		if (mp->m_flag & MDELETED)
80			continue;
81		if (flag++ >= size)
82			break;
83		printhead(mesg);
84	}
85	if (flag == 0) {
86		printf("No more mail.\n");
87		return (1);
88	}
89	return (0);
90}
91
92/*
93 * Scroll to the next/previous screen
94 */
95int
96scroll(char arg[])
97{
98	int s, size;
99	int cur[1];
100
101	cur[0] = 0;
102	size = screensize();
103	s = screen;
104	switch (*arg) {
105	case 0:
106	case '+':
107		s++;
108		if (s * size >= msgCount) {
109			printf("On last screenful of messages\n");
110			return (0);
111		}
112		screen = s;
113		break;
114
115	case '-':
116		if (--s < 0) {
117			printf("On first screenful of messages\n");
118			return (0);
119		}
120		screen = s;
121		break;
122
123	default:
124		printf("Unrecognized scrolling command \"%s\"\n", arg);
125		return (1);
126	}
127	return (headers(cur));
128}
129
130/*
131 * Compute screen size.
132 */
133int
134screensize(void)
135{
136	int s;
137	char *cp;
138
139	if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
140		return (s);
141	return (screenheight - 4);
142}
143
144/*
145 * Print out the headlines for each message
146 * in the passed message list.
147 */
148int
149from(int *msgvec)
150{
151	int *ip;
152
153	for (ip = msgvec; *ip != 0; ip++)
154		printhead(*ip);
155	if (--ip >= msgvec)
156		dot = &message[*ip - 1];
157	return (0);
158}
159
160/*
161 * Print out the header of a specific message.
162 * This is a slight improvement to the standard one.
163 */
164void
165printhead(int mesg)
166{
167	struct message *mp;
168	char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
169	char pbuf[BUFSIZ];
170	struct headline hl;
171	int subjlen;
172	char *name;
173
174	mp = &message[mesg-1];
175	(void)readline(setinput(mp), headline, LINESIZE);
176	if ((subjline = hfield("subject", mp)) == NULL)
177		subjline = hfield("subj", mp);
178	/*
179	 * Bletch!
180	 */
181	curind = dot == mp ? '>' : ' ';
182	dispc = ' ';
183	if (mp->m_flag & MSAVED)
184		dispc = '*';
185	if (mp->m_flag & MPRESERVE)
186		dispc = 'P';
187	if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
188		dispc = 'N';
189	if ((mp->m_flag & (MREAD|MNEW)) == 0)
190		dispc = 'U';
191	if (mp->m_flag & MBOX)
192		dispc = 'M';
193	parse(headline, &hl, pbuf);
194	sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
195	subjlen = screenwidth - 50 - strlen(wcount);
196	name = value("show-rcpt") != NULL ?
197		skin(hfield("to", mp)) : nameof(mp, 0);
198	if (subjline == NULL || subjlen < 0)		/* pretty pathetic */
199		printf("%c%c%3d %-20.20s  %16.16s %s\n",
200			curind, dispc, mesg, name, hl.l_date, wcount);
201	else
202		printf("%c%c%3d %-20.20s  %16.16s %s \"%.*s\"\n",
203			curind, dispc, mesg, name, hl.l_date, wcount,
204			subjlen, subjline);
205}
206
207/*
208 * Print out the value of dot.
209 */
210int
211pdot(void)
212{
213	printf("%td\n", dot - &message[0] + 1);
214	return (0);
215}
216
217/*
218 * Print out all the possible commands.
219 */
220int
221pcmdlist(void)
222{
223	const struct cmd *cp;
224	int cc;
225
226	printf("Commands are:\n");
227	for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
228		cc += strlen(cp->c_name) + 2;
229		if (cc > 72) {
230			printf("\n");
231			cc = strlen(cp->c_name) + 2;
232		}
233		if ((cp+1)->c_name != NULL)
234			printf("%s, ", cp->c_name);
235		else
236			printf("%s\n", cp->c_name);
237	}
238	return (0);
239}
240
241/*
242 * Paginate messages, honor ignored fields.
243 */
244int
245more(int *msgvec)
246{
247
248	return (type1(msgvec, 1, 1));
249}
250
251/*
252 * Paginate messages, even printing ignored fields.
253 */
254int
255More(int *msgvec)
256{
257
258	return (type1(msgvec, 0, 1));
259}
260
261/*
262 * Type out messages, honor ignored fields.
263 */
264int
265type(int *msgvec)
266{
267
268	return (type1(msgvec, 1, 0));
269}
270
271/*
272 * Type out messages, even printing ignored fields.
273 */
274int
275Type(int *msgvec)
276{
277
278	return (type1(msgvec, 0, 0));
279}
280
281/*
282 * Type out the messages requested.
283 */
284static jmp_buf	pipestop;
285int
286type1(int *msgvec, int doign, int page)
287{
288	int nlines, *ip;
289	struct message *mp;
290	char *cp;
291	FILE *obuf;
292
293	obuf = stdout;
294	if (setjmp(pipestop))
295		goto close_pipe;
296	if (value("interactive") != NULL &&
297	    (page || (cp = value("crt")) != NULL)) {
298		nlines = 0;
299		if (!page) {
300			for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
301				nlines += message[*ip - 1].m_lines;
302		}
303		if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
304			cp = value("PAGER");
305			if (cp == NULL || *cp == '\0')
306				cp = _PATH_MORE;
307			obuf = Popen(cp, "w");
308			if (obuf == NULL) {
309				warnx("%s", cp);
310				obuf = stdout;
311			} else
312				(void)signal(SIGPIPE, brokpipe);
313		}
314	}
315
316	/*
317	 * Send messages to the output.
318	 *
319	 */
320	for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
321		mp = &message[*ip - 1];
322		touch(mp);
323		dot = mp;
324		if (value("quiet") == NULL)
325			fprintf(obuf, "Message %d:\n", *ip);
326		(void)sendmessage(mp, obuf, doign ? ignore : 0, NULL);
327	}
328
329close_pipe:
330	if (obuf != stdout) {
331		/*
332		 * Ignore SIGPIPE so it can't cause a duplicate close.
333		 */
334		(void)signal(SIGPIPE, SIG_IGN);
335		(void)Pclose(obuf);
336		(void)signal(SIGPIPE, SIG_DFL);
337	}
338	return (0);
339}
340
341/*
342 * Respond to a broken pipe signal --
343 * probably caused by quitting more.
344 */
345/*ARGSUSED*/
346void
347brokpipe(int signo __unused)
348{
349	longjmp(pipestop, 1);
350}
351
352/*
353 * Print the top so many lines of each desired message.
354 * The number of lines is taken from the variable "toplines"
355 * and defaults to 5.
356 */
357int
358top(int *msgvec)
359{
360	int *ip;
361	struct message *mp;
362	int c, topl, lines, lineb;
363	char *valtop, linebuf[LINESIZE];
364	FILE *ibuf;
365
366	topl = 5;
367	valtop = value("toplines");
368	if (valtop != NULL) {
369		topl = atoi(valtop);
370		if (topl < 0 || topl > 10000)
371			topl = 5;
372	}
373	lineb = 1;
374	for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
375		mp = &message[*ip - 1];
376		touch(mp);
377		dot = mp;
378		if (value("quiet") == NULL)
379			printf("Message %d:\n", *ip);
380		ibuf = setinput(mp);
381		c = mp->m_lines;
382		if (!lineb)
383			printf("\n");
384		for (lines = 0; lines < c && lines <= topl; lines++) {
385			if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
386				break;
387			puts(linebuf);
388			lineb = strspn(linebuf, " \t") == strlen(linebuf);
389		}
390	}
391	return (0);
392}
393
394/*
395 * Touch all the given messages so that they will
396 * get mboxed.
397 */
398int
399stouch(int msgvec[])
400{
401	int *ip;
402
403	for (ip = msgvec; *ip != 0; ip++) {
404		dot = &message[*ip-1];
405		dot->m_flag |= MTOUCH;
406		dot->m_flag &= ~MPRESERVE;
407	}
408	return (0);
409}
410
411/*
412 * Make sure all passed messages get mboxed.
413 */
414int
415mboxit(int msgvec[])
416{
417	int *ip;
418
419	for (ip = msgvec; *ip != 0; ip++) {
420		dot = &message[*ip-1];
421		dot->m_flag |= MTOUCH|MBOX;
422		dot->m_flag &= ~MPRESERVE;
423	}
424	return (0);
425}
426
427/*
428 * List the folders the user currently has.
429 */
430int
431folders(void)
432{
433	char dirname[PATHSIZE];
434	char *cmd;
435
436	if (getfold(dirname, sizeof(dirname)) < 0) {
437		printf("No value set for \"folder\"\n");
438		return (1);
439	}
440	if ((cmd = value("LISTER")) == NULL)
441		cmd = "ls";
442	(void)run_command(cmd, 0, -1, -1, dirname, NULL, NULL);
443	return (0);
444}
445
446/*
447 * Update the mail file with any new messages that have
448 * come in since we started reading mail.
449 */
450int
451inc(void *v __unused)
452{
453	int nmsg, mdot;
454
455	nmsg = incfile();
456
457	if (nmsg == 0)
458		printf("No new mail.\n");
459	else if (nmsg > 0) {
460		mdot = newfileinfo(msgCount - nmsg);
461		dot = &message[mdot - 1];
462	} else
463		printf("\"inc\" command failed...\n");
464
465	return (0);
466}
467