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 #include "rcv.h"
33 #include "extern.h"
34
35 /*
36 * Mail -- a mail program
37 *
38 * User commands.
39 */
40
41 /*
42 * Print the current active headings.
43 * Don't change dot if invoker didn't give an argument.
44 */
45
46 static int screen;
47
48 int
headers(void * v)49 headers(void *v)
50 {
51 int *msgvec = v;
52 int n, mesg, flag, size;
53 struct message *mp;
54
55 size = screensize();
56 n = msgvec[0];
57 if (n != 0)
58 screen = (n-1)/size;
59 if (screen < 0)
60 screen = 0;
61 mp = &message[screen * size];
62 if (mp >= &message[msgCount])
63 mp = &message[msgCount - size];
64 if (mp < &message[0])
65 mp = &message[0];
66 flag = 0;
67 mesg = mp - &message[0];
68 if (dot != &message[n-1])
69 dot = mp;
70 for (; mp < &message[msgCount]; mp++) {
71 mesg++;
72 if (mp->m_flag & MDELETED)
73 continue;
74 if (flag++ >= size)
75 break;
76 printhead(mesg);
77 }
78 if (flag == 0) {
79 printf("No more mail.\n");
80 return (1);
81 }
82 return (0);
83 }
84
85 /*
86 * Scroll to the next/previous screen
87 */
88 int
scroll(void * v)89 scroll(void *v)
90 {
91 char *arg = v;
92 int s, size;
93 int cur[1];
94
95 cur[0] = 0;
96 size = screensize();
97 s = screen;
98 switch (*arg) {
99 case 0:
100 case '+':
101 s++;
102 if (s * size >= msgCount) {
103 printf("On last screenful of messages\n");
104 return (0);
105 }
106 screen = s;
107 break;
108
109 case '-':
110 if (--s < 0) {
111 printf("On first screenful of messages\n");
112 return (0);
113 }
114 screen = s;
115 break;
116
117 default:
118 printf("Unrecognized scrolling command \"%s\"\n", arg);
119 return (1);
120 }
121 return (headers(cur));
122 }
123
124 /*
125 * Compute screen size.
126 */
127 int
screensize(void)128 screensize(void)
129 {
130 int s;
131 char *cp;
132
133 if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
134 return (s);
135 return (screenheight - 4);
136 }
137
138 /*
139 * Print out the headlines for each message
140 * in the passed message list.
141 */
142 int
from(void * v)143 from(void *v)
144 {
145 int *msgvec = v;
146 int *ip;
147
148 for (ip = msgvec; *ip != 0; ip++)
149 printhead(*ip);
150 if (--ip >= msgvec)
151 dot = &message[*ip - 1];
152 return (0);
153 }
154
155 /*
156 * Print out the header of a specific message.
157 * This is a slight improvement to the standard one.
158 */
159 void
printhead(int mesg)160 printhead(int mesg)
161 {
162 struct message *mp;
163 char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
164 char pbuf[BUFSIZ];
165 struct headline hl;
166 int subjlen;
167 char *name;
168
169 mp = &message[mesg-1];
170 (void)readline(setinput(mp), headline, LINESIZE);
171 if ((subjline = hfield("subject", mp)) == NULL)
172 subjline = hfield("subj", mp);
173 /*
174 * Bletch!
175 */
176 curind = dot == mp ? '>' : ' ';
177 dispc = ' ';
178 if (mp->m_flag & MSAVED)
179 dispc = '*';
180 if (mp->m_flag & MPRESERVE)
181 dispc = 'P';
182 if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
183 dispc = 'N';
184 if ((mp->m_flag & (MREAD|MNEW)) == 0)
185 dispc = 'U';
186 if (mp->m_flag & MBOX)
187 dispc = 'M';
188 parse(headline, &hl, pbuf);
189 sprintf(wcount, "%3ld/%-5ld", mp->m_lines, mp->m_size);
190 subjlen = screenwidth - 50 - strlen(wcount);
191 name = value("show-rcpt") != NULL ?
192 skin(hfield("to", mp)) : nameof(mp, 0);
193 if (subjline == NULL || subjlen < 0) /* pretty pathetic */
194 printf("%c%c%3d %-20.20s %16.16s %s\n",
195 curind, dispc, mesg, name, hl.l_date, wcount);
196 else
197 printf("%c%c%3d %-20.20s %16.16s %s \"%.*s\"\n",
198 curind, dispc, mesg, name, hl.l_date, wcount,
199 subjlen, subjline);
200 }
201
202 /*
203 * Print out the value of dot.
204 */
205 int
pdot(void * arg __unused)206 pdot(void *arg __unused)
207 {
208 printf("%td\n", dot - &message[0] + 1);
209 return (0);
210 }
211
212 /*
213 * Print out all the possible commands.
214 */
215 int
pcmdlist(void * arg __unused)216 pcmdlist(void *arg __unused)
217 {
218 extern const struct cmd cmdtab[];
219 const struct cmd *cp;
220 int cc;
221
222 printf("Commands are:\n");
223 for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
224 cc += strlen(cp->c_name) + 2;
225 if (cc > 72) {
226 printf("\n");
227 cc = strlen(cp->c_name) + 2;
228 }
229 if ((cp+1)->c_name != NULL)
230 printf("%s, ", cp->c_name);
231 else
232 printf("%s\n", cp->c_name);
233 }
234 return (0);
235 }
236
237 /*
238 * Paginate messages, honor ignored fields.
239 */
240 int
more(void * v)241 more(void *v)
242 {
243 int *msgvec = v;
244
245 return (type1(msgvec, 1, 1));
246 }
247
248 /*
249 * Paginate messages, even printing ignored fields.
250 */
251 int
More(void * v)252 More(void *v)
253 {
254 int *msgvec = v;
255
256 return (type1(msgvec, 0, 1));
257 }
258
259 /*
260 * Type out messages, honor ignored fields.
261 */
262 int
type(void * v)263 type(void *v)
264 {
265 int *msgvec = v;
266
267 return (type1(msgvec, 1, 0));
268 }
269
270 /*
271 * Type out messages, even printing ignored fields.
272 */
273 int
Type(void * v)274 Type(void *v)
275 {
276 int *msgvec = v;
277
278 return (type1(msgvec, 0, 0));
279 }
280
281 /*
282 * Type out the messages requested.
283 */
284 static jmp_buf pipestop;
285 int
type1(int * msgvec,int doign,int page)286 type1(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_LESS;
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
329 close_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*/
346 void
brokpipe(int signo __unused)347 brokpipe(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 */
357 int
top(void * v)358 top(void *v)
359 {
360 int *msgvec = v;
361 int *ip;
362 struct message *mp;
363 int c, topl, lines, lineb;
364 char *valtop, linebuf[LINESIZE];
365 FILE *ibuf;
366
367 topl = 5;
368 valtop = value("toplines");
369 if (valtop != NULL) {
370 topl = atoi(valtop);
371 if (topl < 0 || topl > 10000)
372 topl = 5;
373 }
374 lineb = 1;
375 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
376 mp = &message[*ip - 1];
377 touch(mp);
378 dot = mp;
379 if (value("quiet") == NULL)
380 printf("Message %d:\n", *ip);
381 ibuf = setinput(mp);
382 c = mp->m_lines;
383 if (!lineb)
384 printf("\n");
385 for (lines = 0; lines < c && lines <= topl; lines++) {
386 if (readline(ibuf, linebuf, sizeof(linebuf)) < 0)
387 break;
388 puts(linebuf);
389 lineb = strspn(linebuf, " \t") == strlen(linebuf);
390 }
391 }
392 return (0);
393 }
394
395 /*
396 * Touch all the given messages so that they will
397 * get mboxed.
398 */
399 int
stouch(void * v)400 stouch(void *v)
401 {
402 int *msgvec = v;
403 int *ip;
404
405 for (ip = msgvec; *ip != 0; ip++) {
406 dot = &message[*ip-1];
407 dot->m_flag |= MTOUCH;
408 dot->m_flag &= ~MPRESERVE;
409 }
410 return (0);
411 }
412
413 /*
414 * Make sure all passed messages get mboxed.
415 */
416 int
mboxit(void * v)417 mboxit(void *v)
418 {
419 int *msgvec = v;
420 int *ip;
421
422 for (ip = msgvec; *ip != 0; ip++) {
423 dot = &message[*ip-1];
424 dot->m_flag |= MTOUCH|MBOX;
425 dot->m_flag &= ~MPRESERVE;
426 }
427 return (0);
428 }
429
430 /*
431 * List the folders the user currently has.
432 */
433 int
folders(void * arg __unused)434 folders(void *arg __unused)
435 {
436 char dirname[PATHSIZE];
437 char *cmd;
438
439 if (getfold(dirname, sizeof(dirname)) < 0) {
440 printf("No value set for \"folder\"\n");
441 return (1);
442 }
443 if ((cmd = value("LISTER")) == NULL)
444 cmd = "ls";
445 (void)run_command(cmd, 0, -1, -1, dirname, NULL);
446 return (0);
447 }
448
449 /*
450 * Update the mail file with any new messages that have
451 * come in since we started reading mail.
452 */
453 int
inc(void * v __unused)454 inc(void *v __unused)
455 {
456 int nmsg, mdot;
457
458 nmsg = incfile();
459
460 if (nmsg == 0)
461 printf("No new mail.\n");
462 else if (nmsg > 0) {
463 mdot = newfileinfo(msgCount - nmsg);
464 dot = &message[mdot - 1];
465 } else
466 printf("\"inc\" command failed...\n");
467
468 return (0);
469 }
470