1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 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
32 #ifndef lint
33 #if 0
34 static char sccsid[] = "@(#)cmd1.c 8.2 (Berkeley) 4/20/95";
35 #endif
36 #endif /* not lint */
37 #include <sys/cdefs.h>
38 #include "rcv.h"
39 #include "extern.h"
40
41 /*
42 * Mail -- a mail program
43 *
44 * User commands.
45 */
46
47 /*
48 * Print the current active headings.
49 * Don't change dot if invoker didn't give an argument.
50 */
51
52 static int screen;
53
54 int
headers(void * v)55 headers(void *v)
56 {
57 int *msgvec = v;
58 int n, mesg, flag, size;
59 struct message *mp;
60
61 size = screensize();
62 n = msgvec[0];
63 if (n != 0)
64 screen = (n-1)/size;
65 if (screen < 0)
66 screen = 0;
67 mp = &message[screen * size];
68 if (mp >= &message[msgCount])
69 mp = &message[msgCount - size];
70 if (mp < &message[0])
71 mp = &message[0];
72 flag = 0;
73 mesg = mp - &message[0];
74 if (dot != &message[n-1])
75 dot = mp;
76 for (; mp < &message[msgCount]; mp++) {
77 mesg++;
78 if (mp->m_flag & MDELETED)
79 continue;
80 if (flag++ >= size)
81 break;
82 printhead(mesg);
83 }
84 if (flag == 0) {
85 printf("No more mail.\n");
86 return (1);
87 }
88 return (0);
89 }
90
91 /*
92 * Scroll to the next/previous screen
93 */
94 int
scroll(void * v)95 scroll(void *v)
96 {
97 char *arg = v;
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 */
133 int
screensize(void)134 screensize(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 */
148 int
from(void * v)149 from(void *v)
150 {
151 int *msgvec = v;
152 int *ip;
153
154 for (ip = msgvec; *ip != 0; ip++)
155 printhead(*ip);
156 if (--ip >= msgvec)
157 dot = &message[*ip - 1];
158 return (0);
159 }
160
161 /*
162 * Print out the header of a specific message.
163 * This is a slight improvement to the standard one.
164 */
165 void
printhead(int mesg)166 printhead(int mesg)
167 {
168 struct message *mp;
169 char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
170 char pbuf[BUFSIZ];
171 struct headline hl;
172 int subjlen;
173 char *name;
174
175 mp = &message[mesg-1];
176 (void)readline(setinput(mp), headline, LINESIZE);
177 if ((subjline = hfield("subject", mp)) == NULL)
178 subjline = hfield("subj", mp);
179 /*
180 * Bletch!
181 */
182 curind = dot == mp ? '>' : ' ';
183 dispc = ' ';
184 if (mp->m_flag & MSAVED)
185 dispc = '*';
186 if (mp->m_flag & MPRESERVE)
187 dispc = 'P';
188 if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
189 dispc = 'N';
190 if ((mp->m_flag & (MREAD|MNEW)) == 0)
191 dispc = 'U';
192 if (mp->m_flag & MBOX)
193 dispc = 'M';
194 parse(headline, &hl, pbuf);
195 sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
196 subjlen = screenwidth - 50 - strlen(wcount);
197 name = value("show-rcpt") != NULL ?
198 skin(hfield("to", mp)) : nameof(mp, 0);
199 if (subjline == NULL || subjlen < 0) /* pretty pathetic */
200 printf("%c%c%3d %-20.20s %16.16s %s\n",
201 curind, dispc, mesg, name, hl.l_date, wcount);
202 else
203 printf("%c%c%3d %-20.20s %16.16s %s \"%.*s\"\n",
204 curind, dispc, mesg, name, hl.l_date, wcount,
205 subjlen, subjline);
206 }
207
208 /*
209 * Print out the value of dot.
210 */
211 int
pdot(void * arg __unused)212 pdot(void *arg __unused)
213 {
214 printf("%td\n", dot - &message[0] + 1);
215 return (0);
216 }
217
218 /*
219 * Print out all the possible commands.
220 */
221 int
pcmdlist(void * arg __unused)222 pcmdlist(void *arg __unused)
223 {
224 extern const struct cmd cmdtab[];
225 const struct cmd *cp;
226 int cc;
227
228 printf("Commands are:\n");
229 for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
230 cc += strlen(cp->c_name) + 2;
231 if (cc > 72) {
232 printf("\n");
233 cc = strlen(cp->c_name) + 2;
234 }
235 if ((cp+1)->c_name != NULL)
236 printf("%s, ", cp->c_name);
237 else
238 printf("%s\n", cp->c_name);
239 }
240 return (0);
241 }
242
243 /*
244 * Paginate messages, honor ignored fields.
245 */
246 int
more(void * v)247 more(void *v)
248 {
249 int *msgvec = v;
250
251 return (type1(msgvec, 1, 1));
252 }
253
254 /*
255 * Paginate messages, even printing ignored fields.
256 */
257 int
More(void * v)258 More(void *v)
259 {
260 int *msgvec = v;
261
262 return (type1(msgvec, 0, 1));
263 }
264
265 /*
266 * Type out messages, honor ignored fields.
267 */
268 int
type(void * v)269 type(void *v)
270 {
271 int *msgvec = v;
272
273 return (type1(msgvec, 1, 0));
274 }
275
276 /*
277 * Type out messages, even printing ignored fields.
278 */
279 int
Type(void * v)280 Type(void *v)
281 {
282 int *msgvec = v;
283
284 return (type1(msgvec, 0, 0));
285 }
286
287 /*
288 * Type out the messages requested.
289 */
290 static jmp_buf pipestop;
291 int
type1(int * msgvec,int doign,int page)292 type1(int *msgvec, int doign, int page)
293 {
294 int nlines, *ip;
295 struct message *mp;
296 char *cp;
297 FILE *obuf;
298
299 obuf = stdout;
300 if (setjmp(pipestop))
301 goto close_pipe;
302 if (value("interactive") != NULL &&
303 (page || (cp = value("crt")) != NULL)) {
304 nlines = 0;
305 if (!page) {
306 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
307 nlines += message[*ip - 1].m_lines;
308 }
309 if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
310 cp = value("PAGER");
311 if (cp == NULL || *cp == '\0')
312 cp = _PATH_LESS;
313 obuf = Popen(cp, "w");
314 if (obuf == NULL) {
315 warnx("%s", cp);
316 obuf = stdout;
317 } else
318 (void)signal(SIGPIPE, brokpipe);
319 }
320 }
321
322 /*
323 * Send messages to the output.
324 *
325 */
326 for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
327 mp = &message[*ip - 1];
328 touch(mp);
329 dot = mp;
330 if (value("quiet") == NULL)
331 fprintf(obuf, "Message %d:\n", *ip);
332 (void)sendmessage(mp, obuf, doign ? ignore : 0, NULL);
333 }
334
335 close_pipe:
336 if (obuf != stdout) {
337 /*
338 * Ignore SIGPIPE so it can't cause a duplicate close.
339 */
340 (void)signal(SIGPIPE, SIG_IGN);
341 (void)Pclose(obuf);
342 (void)signal(SIGPIPE, SIG_DFL);
343 }
344 return (0);
345 }
346
347 /*
348 * Respond to a broken pipe signal --
349 * probably caused by quitting more.
350 */
351 /*ARGSUSED*/
352 void
brokpipe(int signo __unused)353 brokpipe(int signo __unused)
354 {
355 longjmp(pipestop, 1);
356 }
357
358 /*
359 * Print the top so many lines of each desired message.
360 * The number of lines is taken from the variable "toplines"
361 * and defaults to 5.
362 */
363 int
top(void * v)364 top(void *v)
365 {
366 int *msgvec = v;
367 int *ip;
368 struct message *mp;
369 int c, topl, lines, lineb;
370 char *valtop, linebuf[LINESIZE];
371 FILE *ibuf;
372
373 topl = 5;
374 valtop = value("toplines");
375 if (valtop != NULL) {
376 topl = atoi(valtop);
377 if (topl < 0 || topl > 10000)
378 topl = 5;
379 }
380 lineb = 1;
381 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
382 mp = &message[*ip - 1];
383 touch(mp);
384 dot = mp;
385 if (value("quiet") == NULL)
386 printf("Message %d:\n", *ip);
387 ibuf = setinput(mp);
388 c = mp->m_lines;
389 if (!lineb)
390 printf("\n");
391 for (lines = 0; lines < c && lines <= topl; lines++) {
392 if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
393 break;
394 puts(linebuf);
395 lineb = strspn(linebuf, " \t") == strlen(linebuf);
396 }
397 }
398 return (0);
399 }
400
401 /*
402 * Touch all the given messages so that they will
403 * get mboxed.
404 */
405 int
stouch(void * v)406 stouch(void *v)
407 {
408 int *msgvec = v;
409 int *ip;
410
411 for (ip = msgvec; *ip != 0; ip++) {
412 dot = &message[*ip-1];
413 dot->m_flag |= MTOUCH;
414 dot->m_flag &= ~MPRESERVE;
415 }
416 return (0);
417 }
418
419 /*
420 * Make sure all passed messages get mboxed.
421 */
422 int
mboxit(void * v)423 mboxit(void *v)
424 {
425 int *msgvec = v;
426 int *ip;
427
428 for (ip = msgvec; *ip != 0; ip++) {
429 dot = &message[*ip-1];
430 dot->m_flag |= MTOUCH|MBOX;
431 dot->m_flag &= ~MPRESERVE;
432 }
433 return (0);
434 }
435
436 /*
437 * List the folders the user currently has.
438 */
439 int
folders(void * arg __unused)440 folders(void *arg __unused)
441 {
442 char dirname[PATHSIZE];
443 char *cmd;
444
445 if (getfold(dirname, sizeof(dirname)) < 0) {
446 printf("No value set for \"folder\"\n");
447 return (1);
448 }
449 if ((cmd = value("LISTER")) == NULL)
450 cmd = "ls";
451 (void)run_command(cmd, 0, -1, -1, dirname, NULL);
452 return (0);
453 }
454
455 /*
456 * Update the mail file with any new messages that have
457 * come in since we started reading mail.
458 */
459 int
inc(void * v __unused)460 inc(void *v __unused)
461 {
462 int nmsg, mdot;
463
464 nmsg = incfile();
465
466 if (nmsg == 0)
467 printf("No new mail.\n");
468 else if (nmsg > 0) {
469 mdot = newfileinfo(msgCount - nmsg);
470 dot = &message[mdot - 1];
471 } else
472 printf("\"inc\" command failed...\n");
473
474 return (0);
475 }
476