Annotation of src/usr.bin/mail/cmd1.c, Revision 1.29
1.29 ! miod 1: /* $OpenBSD: cmd1.c,v 1.28 2009/10/27 23:59:40 deraadt Exp $ */
1.6 millert 2: /* $NetBSD: cmd1.c,v 1.9 1997/07/09 05:29:48 mikel Exp $ */
1.2 niklas 3:
1.1 deraadt 4: /*-
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.24 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include "rcv.h"
34: #include "extern.h"
35:
36: /*
37: * Mail -- a mail program
38: *
39: * User commands.
40: */
41:
42: /*
43: * Print the current active headings.
44: * Don't change dot if invoker didn't give an argument.
45: */
46:
47: static int screen;
1.20 millert 48: static volatile sig_atomic_t gothdrint;
1.1 deraadt 49:
50: int
1.21 millert 51: headers(void *v)
1.1 deraadt 52: {
1.3 deraadt 53: int *msgvec = v;
1.12 millert 54: int n, mesg, flag, size;
55: struct message *mp;
1.20 millert 56: struct sigaction act, oact;
57: sigset_t oset;
1.1 deraadt 58:
59: size = screensize();
60: n = msgvec[0];
1.26 martynas 61: if (n != 0 && size > 0)
1.1 deraadt 62: screen = (n-1)/size;
63: if (screen < 0)
64: screen = 0;
65: mp = &message[screen * size];
66: if (mp >= &message[msgCount])
67: mp = &message[msgCount - size];
68: if (mp < &message[0])
69: mp = &message[0];
70: flag = 0;
71: mesg = mp - &message[0];
72: if (dot != &message[n-1])
73: dot = mp;
1.20 millert 74: sigemptyset(&act.sa_mask);
75: act.sa_flags = SA_RESTART;
76: act.sa_handler = hdrint;
77: if (sigaction(SIGINT, NULL, &oact) == 0 &&
78: oact.sa_handler != SIG_IGN) {
79: (void)sigaction(SIGINT, &act, &oact);
80: (void)sigprocmask(SIG_UNBLOCK, &intset, &oset);
81: }
82: for (gothdrint = 0; !gothdrint && mp < &message[msgCount]; mp++) {
1.1 deraadt 83: mesg++;
84: if (mp->m_flag & MDELETED)
85: continue;
86: if (flag++ >= size)
87: break;
88: printhead(mesg);
89: }
1.20 millert 90: if (gothdrint) {
91: fflush(stdout);
92: fputs("\nInterrupt\n", stderr);
93: }
94: if (oact.sa_handler != SIG_IGN) {
95: (void)sigprocmask(SIG_SETMASK, &oset, NULL);
96: (void)sigaction(SIGINT, &oact, NULL);
97: }
1.1 deraadt 98: if (flag == 0) {
1.6 millert 99: puts("No more mail.");
1.1 deraadt 100: return(1);
101: }
102: return(0);
103: }
104:
105: /*
106: * Scroll to the next/previous screen
107: */
108: int
1.21 millert 109: scroll(void *v)
1.1 deraadt 110: {
1.3 deraadt 111: char *arg = v;
1.13 millert 112: int size, maxscreen;
1.1 deraadt 113: int cur[1];
114:
115: cur[0] = 0;
116: size = screensize();
1.26 martynas 117: maxscreen = 0;
118: if (size > 0)
119: maxscreen = (msgCount - 1) / size;
1.1 deraadt 120: switch (*arg) {
121: case 0:
122: case '+':
1.13 millert 123: if (screen >= maxscreen) {
1.6 millert 124: puts("On last screenful of messages");
1.1 deraadt 125: return(0);
126: }
1.13 millert 127: screen++;
1.1 deraadt 128: break;
129:
130: case '-':
1.13 millert 131: if (screen <= 0) {
1.6 millert 132: puts("On first screenful of messages");
1.1 deraadt 133: return(0);
134: }
1.13 millert 135: screen--;
1.1 deraadt 136: break;
137:
138: default:
139: printf("Unrecognized scrolling command \"%s\"\n", arg);
140: return(1);
141: }
142: return(headers(cur));
143: }
144:
145: /*
146: * Compute screen size.
147: */
148: int
1.21 millert 149: screensize(void)
1.1 deraadt 150: {
151: int s;
152: char *cp;
153:
1.8 millert 154: if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
1.6 millert 155: return(s);
156: return(screenheight - 4);
1.1 deraadt 157: }
158:
159: /*
160: * Print out the headlines for each message
161: * in the passed message list.
162: */
163: int
1.21 millert 164: from(void *v)
1.1 deraadt 165: {
1.3 deraadt 166: int *msgvec = v;
1.12 millert 167: int *ip;
1.1 deraadt 168:
1.29 ! miod 169: for (ip = msgvec; *ip != 0; ip++)
1.1 deraadt 170: printhead(*ip);
171: if (--ip >= msgvec)
172: dot = &message[*ip - 1];
173: return(0);
174: }
175:
176: /*
177: * Print out the header of a specific message.
178: * This is a slight improvement to the standard one.
179: */
180: void
1.21 millert 181: printhead(int mesg)
1.1 deraadt 182: {
183: struct message *mp;
1.25 millert 184: char headline[LINESIZE], *subjline, dispc, curind;
185: char visname[LINESIZE], vissub[LINESIZE];
186: char pbuf[LINESIZE];
187: char fmtline[LINESIZE];
188: const char *fmt;
1.1 deraadt 189: struct headline hl;
190: char *name;
1.17 millert 191: char *to, *from;
192: struct name *np;
193: char **ap;
1.1 deraadt 194:
195: mp = &message[mesg-1];
1.20 millert 196: (void)readline(setinput(mp), headline, LINESIZE, NULL);
1.25 millert 197: if ((subjline = hfield("subject", mp)) == NULL &&
198: (subjline = hfield("subj", mp)) == NULL)
199: subjline = "";
1.1 deraadt 200: /*
201: * Bletch!
202: */
203: curind = dot == mp ? '>' : ' ';
204: dispc = ' ';
205: if (mp->m_flag & MSAVED)
206: dispc = '*';
207: if (mp->m_flag & MPRESERVE)
208: dispc = 'P';
209: if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
210: dispc = 'N';
211: if ((mp->m_flag & (MREAD|MNEW)) == 0)
212: dispc = 'U';
213: if (mp->m_flag & MBOX)
214: dispc = 'M';
215: parse(headline, &hl, pbuf);
1.17 millert 216: from = nameof(mp, 0);
217: to = skin(hfield("to", mp));
218: np = extract(from, GTO);
219: np = delname(np, myname);
220: if (altnames)
221: for (ap = altnames; *ap; ap++)
222: np = delname(np, *ap);
223: if (np)
224: /* not from me */
225: name = value("show-rcpt") != NULL && to ? to : from;
1.1 deraadt 226: else
1.17 millert 227: /* from me - show TO */
228: name = value("showto") != NULL && to ? to : from;
1.25 millert 229: strnvis(visname, name, sizeof(visname), VIS_SAFE|VIS_NOSLASH);
1.17 millert 230: if (name == to)
1.25 millert 231: fmt = "%c%c%3d TO %-14.14s %16.16s %4d/%-5d %s";
1.17 millert 232: else
1.25 millert 233: fmt = "%c%c%3d %-17.17s %16.16s %4d/%-5d %s";
234: strnvis(vissub, subjline, sizeof(vissub), VIS_SAFE|VIS_NOSLASH);
235: /* hl.l_date was sanity-checked when read in. */
236: snprintf(fmtline, sizeof(fmtline), fmt, curind, dispc, mesg, visname,
237: hl.l_date, mp->m_lines, mp->m_size, vissub);
238: printf("%.*s\n", screenwidth, fmtline);
1.1 deraadt 239: }
240:
241: /*
242: * Print out the value of dot.
243: */
244: int
1.21 millert 245: pdot(void *v)
1.1 deraadt 246: {
1.12 millert 247: printf("%d\n", (int)(dot - &message[0] + 1));
1.1 deraadt 248: return(0);
249: }
250:
251: /*
252: * Print out all the possible commands.
253: */
254: int
1.21 millert 255: pcmdlist(void *v)
1.1 deraadt 256: {
1.2 niklas 257: extern const struct cmd cmdtab[];
1.12 millert 258: const struct cmd *cp;
259: int cc;
1.1 deraadt 260:
1.6 millert 261: puts("Commands are:");
1.1 deraadt 262: for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
263: cc += strlen(cp->c_name) + 2;
264: if (cc > 72) {
1.6 millert 265: putchar('\n');
1.1 deraadt 266: cc = strlen(cp->c_name) + 2;
267: }
1.8 millert 268: if ((cp+1)->c_name != NULL)
1.1 deraadt 269: printf("%s, ", cp->c_name);
270: else
1.6 millert 271: puts(cp->c_name);
1.1 deraadt 272: }
273: return(0);
274: }
275:
276: /*
1.17 millert 277: * Pipe message to command
278: */
279: int
1.21 millert 280: pipeit(void *ml, void *sl)
1.17 millert 281: {
282: int *msgvec = ml;
283: char *cmd = sl;
284:
285: return(type1(msgvec, cmd, 0, 0));
286: }
287:
288: /*
1.1 deraadt 289: * Paginate messages, honor ignored fields.
290: */
291: int
1.21 millert 292: more(void *v)
1.1 deraadt 293: {
1.3 deraadt 294: int *msgvec = v;
1.17 millert 295: return(type1(msgvec, NULL, 1, 1));
1.1 deraadt 296: }
297:
298: /*
299: * Paginate messages, even printing ignored fields.
300: */
301: int
1.21 millert 302: More(void *v)
1.1 deraadt 303: {
1.3 deraadt 304: int *msgvec = v;
1.1 deraadt 305:
1.17 millert 306: return(type1(msgvec, NULL, 0, 1));
1.1 deraadt 307: }
308:
309: /*
310: * Type out messages, honor ignored fields.
311: */
312: int
1.21 millert 313: type(void *v)
1.1 deraadt 314: {
1.3 deraadt 315: int *msgvec = v;
1.1 deraadt 316:
1.17 millert 317: return(type1(msgvec, NULL, 1, 0));
1.1 deraadt 318: }
319:
320: /*
321: * Type out messages, even printing ignored fields.
322: */
323: int
1.21 millert 324: Type(void *v)
1.1 deraadt 325: {
1.3 deraadt 326: int *msgvec = v;
1.1 deraadt 327:
1.17 millert 328: return(type1(msgvec, NULL, 0, 0));
1.1 deraadt 329: }
330:
331: /*
332: * Type out the messages requested.
333: */
334: int
1.21 millert 335: type1(int *msgvec, char *cmd, int doign, int page)
1.1 deraadt 336: {
1.19 millert 337: int nlines, *ip, restoreterm;
1.3 deraadt 338: struct message *mp;
1.19 millert 339: struct termios tbuf;
1.20 millert 340: char *cp;
341: FILE *obuf;
1.1 deraadt 342:
343: obuf = stdout;
1.19 millert 344: restoreterm = 0;
1.17 millert 345:
346: /*
347: * start a pipe if needed.
348: */
349: if (cmd) {
1.19 millert 350: restoreterm = (tcgetattr(fileno(stdin), &tbuf) == 0);
1.17 millert 351: obuf = Popen(cmd, "w");
352: if (obuf == NULL) {
1.20 millert 353: warn("%s", cmd);
1.17 millert 354: obuf = stdout;
355: }
356: } else if (value("interactive") != NULL &&
357: (page || (cp = value("crt")) != NULL)) {
1.1 deraadt 358: nlines = 0;
359: if (!page) {
360: for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
361: nlines += message[*ip - 1].m_lines;
362: }
363: if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
1.19 millert 364: restoreterm = (tcgetattr(fileno(stdin), &tbuf) == 0);
1.27 martynas 365: cp = value("PAGER");
366: obuf = Popen(cp, "w");
1.1 deraadt 367: if (obuf == NULL) {
1.16 millert 368: warn("%s", cp);
1.1 deraadt 369: obuf = stdout;
1.20 millert 370: }
1.1 deraadt 371: }
372: }
1.17 millert 373:
374: /*
1.21 millert 375: * Send messages to the output.
1.17 millert 376: */
1.1 deraadt 377: for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
378: mp = &message[*ip - 1];
379: touch(mp);
380: dot = mp;
1.17 millert 381: if (cmd == NULL && value("quiet") == NULL)
1.1 deraadt 382: fprintf(obuf, "Message %d:\n", *ip);
1.19 millert 383: if (sendmessage(mp, obuf, doign ? ignore : 0, NULL) == -1)
384: break;
1.1 deraadt 385: }
1.17 millert 386:
1.1 deraadt 387: if (obuf != stdout) {
1.6 millert 388: (void)Pclose(obuf);
1.19 millert 389: if (restoreterm)
390: (void)tcsetattr(fileno(stdin), TCSADRAIN, &tbuf);
1.1 deraadt 391: }
392: return(0);
393: }
394:
395: /*
396: * Print the top so many lines of each desired message.
397: * The number of lines is taken from the variable "toplines"
398: * and defaults to 5.
399: */
400: int
1.21 millert 401: top(void * v)
1.1 deraadt 402: {
1.3 deraadt 403: int *msgvec = v;
1.12 millert 404: int *ip;
405: struct message *mp;
1.1 deraadt 406: int c, topl, lines, lineb;
407: char *valtop, linebuf[LINESIZE];
408: FILE *ibuf;
409:
410: topl = 5;
411: valtop = value("toplines");
1.8 millert 412: if (valtop != NULL) {
1.1 deraadt 413: topl = atoi(valtop);
414: if (topl < 0 || topl > 10000)
415: topl = 5;
416: }
417: lineb = 1;
418: for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
419: mp = &message[*ip - 1];
420: touch(mp);
421: dot = mp;
1.8 millert 422: if (value("quiet") == NULL)
1.1 deraadt 423: printf("Message %d:\n", *ip);
424: ibuf = setinput(mp);
425: c = mp->m_lines;
426: if (!lineb)
1.6 millert 427: putchar('\n');
1.1 deraadt 428: for (lines = 0; lines < c && lines <= topl; lines++) {
1.20 millert 429: if (readline(ibuf, linebuf, sizeof(linebuf), NULL) < 0)
1.1 deraadt 430: break;
431: puts(linebuf);
432: lineb = blankline(linebuf);
433: }
434: }
435: return(0);
436: }
437:
438: /*
439: * Touch all the given messages so that they will
440: * get mboxed.
441: */
442: int
1.21 millert 443: stouch(void *v)
1.1 deraadt 444: {
1.3 deraadt 445: int *msgvec = v;
1.12 millert 446: int *ip;
1.1 deraadt 447:
448: for (ip = msgvec; *ip != 0; ip++) {
449: dot = &message[*ip-1];
450: dot->m_flag |= MTOUCH;
451: dot->m_flag &= ~MPRESERVE;
452: }
453: return(0);
454: }
455:
456: /*
457: * Make sure all passed messages get mboxed.
458: */
459: int
1.21 millert 460: mboxit(void *v)
1.1 deraadt 461: {
1.3 deraadt 462: int *msgvec = v;
1.12 millert 463: int *ip;
1.1 deraadt 464:
465: for (ip = msgvec; *ip != 0; ip++) {
466: dot = &message[*ip-1];
467: dot->m_flag |= MTOUCH|MBOX;
468: dot->m_flag &= ~MPRESERVE;
469: }
470: return(0);
471: }
472:
473: /*
474: * List the folders the user currently has.
475: */
476: int
1.21 millert 477: folders(void *v)
1.1 deraadt 478: {
1.17 millert 479: char *files = (char *)v;
1.5 deraadt 480: char dirname[PATHSIZE];
1.17 millert 481: char cmd[BUFSIZ];
1.1 deraadt 482:
1.22 millert 483: if (getfold(dirname, sizeof(dirname)) < 0)
484: strlcpy(dirname, "$HOME", sizeof(dirname));
1.17 millert 485:
486: snprintf(cmd, sizeof(cmd), "cd %s; %s %s", dirname, value("LISTER"),
487: files && *files ? files : "");
488:
489: (void)run_command(value("SHELL"), 0, -1, -1, "-c", cmd, NULL);
1.6 millert 490: return(0);
491: }
492:
493: /*
494: * Update the mail file with any new messages that have
495: * come in since we started reading mail.
496: */
497: int
1.21 millert 498: inc(void *v)
1.6 millert 499: {
500: int nmsg, mdot;
501:
502: nmsg = incfile();
503:
504: if (nmsg == 0) {
505: puts("No new mail.");
506: } else if (nmsg > 0) {
507: mdot = newfileinfo(msgCount - nmsg);
508: dot = &message[mdot - 1];
509: } else {
510: puts("\"inc\" command failed...");
511: }
512:
513: return(0);
1.20 millert 514: }
515:
516: /*
517: * User hit ^C while printing the headers.
518: */
519: void
1.21 millert 520: hdrint(int s)
1.20 millert 521: {
522:
523: gothdrint = 1;
1.1 deraadt 524: }
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