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
32 static 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
47 extern 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
54 static int screen;
55
56 int
headers(int * msgvec)57 headers(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 */
95 int
scroll(char arg[])96 scroll(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 */
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(int * msgvec)149 from(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 */
164 void
printhead(int mesg)165 printhead(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 */
210 int
pdot(void)211 pdot(void)
212 {
213 printf("%td\n", dot - &message[0] + 1);
214 return (0);
215 }
216
217 /*
218 * Print out all the possible commands.
219 */
220 int
pcmdlist(void)221 pcmdlist(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 */
244 int
more(int * msgvec)245 more(int *msgvec)
246 {
247
248 return (type1(msgvec, 1, 1));
249 }
250
251 /*
252 * Paginate messages, even printing ignored fields.
253 */
254 int
More(int * msgvec)255 More(int *msgvec)
256 {
257
258 return (type1(msgvec, 0, 1));
259 }
260
261 /*
262 * Type out messages, honor ignored fields.
263 */
264 int
type(int * msgvec)265 type(int *msgvec)
266 {
267
268 return (type1(msgvec, 1, 0));
269 }
270
271 /*
272 * Type out messages, even printing ignored fields.
273 */
274 int
Type(int * msgvec)275 Type(int *msgvec)
276 {
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_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
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(int * msgvec)358 top(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 */
398 int
stouch(int msgvec[])399 stouch(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 */
414 int
mboxit(int msgvec[])415 mboxit(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 */
430 int
folders(void)431 folders(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 */
450 int
inc(void * v __unused)451 inc(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