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1.29 ! deraadt 1: /* $OpenBSD: msgs.c,v 1.28 2003/10/04 21:55:12 jmc Exp $ */
1.1 deraadt 2: /* $NetBSD: msgs.c,v 1.7 1995/09/28 06:57:40 tls Exp $ */
3:
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.
1.26 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: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1980, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)msgs.c 8.2 (Berkeley) 4/28/95";
42: #else
1.29 ! deraadt 43: static char rcsid[] = "$OpenBSD: msgs.c,v 1.28 2003/10/04 21:55:12 jmc Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: /*
48: * msgs - a user bulletin board program
49: *
50: * usage:
51: * msgs [fhlopqr] [[-]number] to read messages
52: * msgs -s to place messages
53: * msgs -c [-days] to clean up the bulletin board
54: *
55: * prompt commands are:
56: * y print message
57: * n flush message, go to next message
58: * q flush message, quit
59: * p print message, turn on 'pipe thru more' mode
60: * P print message, turn off 'pipe thru more' mode
61: * - reprint last message
62: * s[-][<num>] [<filename>] save message
63: * m[-][<num>] mail with message in temp mbox
64: * x exit without flushing this message
65: * <num> print message number <num>
66: */
67:
68: #define OBJECT /* will object to messages without Subjects */
69: #define REJECT /* will reject messages without Subjects
70: (OBJECT must be defined also) */
1.9 downsj 71: #undef UNBUFFERED /* use unbuffered output */
1.1 deraadt 72:
73: #include <sys/param.h>
74: #include <sys/ioctl.h>
75: #include <sys/stat.h>
76: #include <dirent.h>
77: #include <ctype.h>
78: #include <errno.h>
1.15 millert 79: #include <fcntl.h>
1.1 deraadt 80: #include <pwd.h>
81: #include <setjmp.h>
82: #include <signal.h>
83: #include <stdio.h>
84: #include <stdlib.h>
85: #include <string.h>
1.9 downsj 86: #include <term.h>
1.1 deraadt 87: #include <termios.h>
88: #include <time.h>
89: #include <unistd.h>
90: #include "pathnames.h"
91:
92: #define CMODE 0664 /* bounds file creation mode */
93: #define NO 0
94: #define YES 1
95: #define SUPERUSER 0 /* superuser uid */
96: #define DAEMON 1 /* daemon uid */
97: #define NLINES 24 /* default number of lines/crt screen */
98: #define NDAYS 21 /* default keep time for messages */
99: #define DAYS *24*60*60 /* seconds/day */
100: #define MSGSRC ".msgsrc" /* user's rc file */
101: #define BOUNDS "bounds" /* message bounds file */
102: #define NEXT "Next message? [yq]"
103: #define MORE "More? [ynq]"
104: #define NOMORE "(No more) [q] ?"
105:
106: typedef char bool;
107:
108: FILE *msgsrc;
109: FILE *newmsg;
110: char *sep = "-";
111: char inbuf[BUFSIZ];
1.8 deraadt 112: char fname[MAXPATHLEN];
113: char cmdbuf[MAXPATHLEN + MAXPATHLEN];
1.1 deraadt 114: char subj[128];
115: char from[128];
116: char date[128];
117: char *ptr;
118: char *in;
119: bool local;
120: bool ruptible;
121: bool totty;
122: bool seenfrom;
123: bool seensubj;
124: bool blankline;
125: bool printing = NO;
126: bool mailing = NO;
127: bool quitit = NO;
128: bool sending = NO;
129: bool intrpflg = NO;
130: bool restricted = NO;
131: int uid;
132: int msg;
133: int prevmsg;
134: int lct;
135: int nlines;
136: int Lpp = 0;
137: time_t t;
138: time_t keep;
139:
1.21 millert 140: void prmesg(int);
141: void onintr(int);
142: void onsusp(int);
143: int linecnt(FILE *);
1.24 deraadt 144: int next(char *, int);
1.21 millert 145: void ask(char *);
146: void gfrsub(FILE *);
147: char *nxtfld(char *);
1.1 deraadt 148:
149: /* option initialization */
150: bool hdrs = NO;
151: bool qopt = NO;
152: bool hush = NO;
153: bool send_msg = NO;
154: bool locomode = NO;
155: bool use_pager = NO;
156: bool clean = NO;
157: bool lastcmd = NO;
158: jmp_buf tstpbuf;
159:
1.9 downsj 160: int
1.27 deraadt 161: main(int argc, char *argv[])
1.1 deraadt 162: {
163: bool newrc, already;
164: int rcfirst = 0; /* first message to print (from .rc) */
165: int rcback = 0; /* amount to back off of rcfirst */
166: int firstmsg, nextmsg, lastmsg = 0;
167: int blast = 0;
168: FILE *bounds;
1.17 millert 169: char *cp;
1.1 deraadt 170:
171: #ifdef UNBUFFERED
172: setbuf(stdout, NULL);
173: #endif
174:
175: time(&t);
1.6 tholo 176: seteuid(uid = getuid());
177: setuid(uid);
1.1 deraadt 178: ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL);
179: if (ruptible)
180: signal(SIGINT, SIG_DFL);
181:
182: argc--, argv++;
183: while (argc > 0) {
184: if (isdigit(argv[0][0])) { /* starting message # */
185: rcfirst = atoi(argv[0]);
1.29 ! deraadt 186: } else if (isdigit(argv[0][1])) { /* backward offset */
! 187: rcback = atoi(&(argv[0][1]));
! 188: } else {
1.1 deraadt 189: ptr = *argv;
1.29 ! deraadt 190: while (*ptr) {
! 191: switch (*ptr++) {
! 192: case '-':
! 193: break;
! 194: case 'c':
! 195: if (uid != SUPERUSER && uid != DAEMON) {
! 196: fprintf(stderr, "Sorry\n");
! 197: exit(1);
! 198: }
! 199: clean = YES;
! 200: break;
! 201: case 'f': /* silently */
! 202: hush = YES;
! 203: break;
! 204: case 'h': /* headers only */
! 205: hdrs = YES;
! 206: break;
! 207: case 'l': /* local msgs only */
! 208: locomode = YES;
! 209: break;
! 210: case 'o': /* option to save last message */
! 211: lastcmd = YES;
! 212: break;
! 213: case 'p': /* pipe thru 'more' during long msgs */
! 214: use_pager = YES;
! 215: break;
! 216: case 'q': /* query only */
! 217: qopt = YES;
! 218: break;
! 219: case 'r': /* restricted */
! 220: restricted = YES;
! 221: break;
! 222: case 's': /* sending TO msgs */
! 223: send_msg = YES;
! 224: break;
! 225: default:
! 226: fprintf(stderr,
! 227: "usage: msgs [fhlopqr] [[-]number]\n"
! 228: " msgs [-s]\n"
! 229: " msgs [-c [-days]]\n");
1.1 deraadt 230: exit(1);
231: }
232: }
233: }
234: argc--, argv++;
235: }
236:
237: /*
238: * determine current message bounds
239: */
1.5 millert 240: snprintf(fname, sizeof(fname), "%s/%s", _PATH_MSGS, BOUNDS);
1.1 deraadt 241: bounds = fopen(fname, "r");
242:
1.12 deraadt 243: if (bounds == NULL) {
1.13 aaron 244: if (errno == ENOENT) {
245: if ((bounds = fopen(fname, "w+")) == NULL) {
246: perror(fname);
247: exit(1);
248: }
249: fprintf(bounds, "1 0\n");
250: rewind(bounds);
1.29 ! deraadt 251: } else {
1.13 aaron 252: perror(fname);
253: exit(1);
254: }
1.1 deraadt 255: }
1.12 deraadt 256:
257: fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg);
258: fclose(bounds);
259: blast = lastmsg; /* save upper bound */
1.1 deraadt 260:
261: if (clean)
262: keep = t - (rcback? rcback : NDAYS) DAYS;
263:
264: if (clean || bounds == NULL) { /* relocate message bounds */
265: struct dirent *dp;
266: struct stat stbuf;
267: bool seenany = NO;
268: DIR *dirp;
269:
270: dirp = opendir(_PATH_MSGS);
271: if (dirp == NULL) {
272: perror(_PATH_MSGS);
273: exit(errno);
274: }
275: chmod(fname, CMODE);
276:
277: firstmsg = 32767;
278: lastmsg = 0;
279:
280: for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){
1.19 mpech 281: int i = 0;
1.1 deraadt 282:
1.17 millert 283: cp = dp->d_name;
1.1 deraadt 284: if (dp->d_ino == 0)
285: continue;
286: if (dp->d_namlen == 0)
287: continue;
288:
289: if (clean)
1.5 millert 290: snprintf(inbuf, sizeof(inbuf), "%s/%s",
1.29 ! deraadt 291: _PATH_MSGS, cp);
1.1 deraadt 292:
293: while (isdigit(*cp))
294: i = i * 10 + *cp++ - '0';
295: if (*cp)
296: continue; /* not a message! */
297:
298: if (clean) {
299: if (stat(inbuf, &stbuf) != 0)
300: continue;
1.29 ! deraadt 301: if (stbuf.st_mtime < keep &&
! 302: stbuf.st_mode&S_IWRITE) {
1.1 deraadt 303: unlink(inbuf);
304: continue;
305: }
306: }
307:
308: if (i > lastmsg)
309: lastmsg = i;
310: if (i < firstmsg)
311: firstmsg = i;
312: seenany = YES;
313: }
314: closedir(dirp);
315:
316: if (!seenany) {
317: if (blast != 0) /* never lower the upper bound! */
318: lastmsg = blast;
319: firstmsg = lastmsg + 1;
1.29 ! deraadt 320: } else if (blast > lastmsg)
1.1 deraadt 321: lastmsg = blast;
322:
323: if (!send_msg) {
324: bounds = fopen(fname, "w");
325: if (bounds == NULL) {
326: perror(fname);
327: exit(errno);
328: }
329: chmod(fname, CMODE);
330: fprintf(bounds, "%d %d\n", firstmsg, lastmsg);
331: fclose(bounds);
332: }
333: }
334:
335: if (send_msg) {
336: /*
337: * Send mode - place msgs in _PATH_MSGS
338: */
339: bounds = fopen(fname, "w");
340: if (bounds == NULL) {
341: perror(fname);
342: exit(errno);
343: }
344:
345: nextmsg = lastmsg + 1;
1.5 millert 346: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, nextmsg);
1.1 deraadt 347: newmsg = fopen(fname, "w");
348: if (newmsg == NULL) {
349: perror(fname);
350: exit(errno);
351: }
352: chmod(fname, 0644);
353:
354: fprintf(bounds, "%d %d\n", firstmsg, nextmsg);
355: fclose(bounds);
356:
357: sending = YES;
358: if (ruptible)
359: signal(SIGINT, onintr);
360:
361: if (isatty(fileno(stdin))) {
362: ptr = getpwuid(uid)->pw_name;
363: printf("Message %d:\nFrom %s %sSubject: ",
1.29 ! deraadt 364: nextmsg, ptr, ctime(&t));
1.1 deraadt 365: fflush(stdout);
366: fgets(inbuf, sizeof inbuf, stdin);
367: putchar('\n');
368: fflush(stdout);
369: fprintf(newmsg, "From %s %sSubject: %s\n",
1.29 ! deraadt 370: ptr, ctime(&t), inbuf);
1.1 deraadt 371: blankline = seensubj = YES;
1.29 ! deraadt 372: } else
1.1 deraadt 373: blankline = seensubj = NO;
374: for (;;) {
375: fgets(inbuf, sizeof inbuf, stdin);
376: if (feof(stdin) || ferror(stdin))
377: break;
378: blankline = (blankline || (inbuf[0] == '\n'));
1.29 ! deraadt 379: seensubj = (seensubj ||
! 380: (!blankline && (strncmp(inbuf, "Subj", 4) == 0)));
1.1 deraadt 381: fputs(inbuf, newmsg);
382: }
383: #ifdef OBJECT
384: if (!seensubj) {
385: printf("NOTICE: Messages should have a Subject field!\n");
386: #ifdef REJECT
387: unlink(fname);
388: #endif
389: exit(1);
390: }
391: #endif
392: exit(ferror(stdin));
393: }
394: if (clean)
395: exit(0);
396:
397: /*
398: * prepare to display messages
399: */
400: totty = (isatty(fileno(stdout)) != 0);
401: use_pager = use_pager && totty;
402:
1.17 millert 403: if ((cp = getenv("HOME")) == NULL || *cp == '\0') {
404: fprintf(stderr, "Error, no home directory!\n");
405: exit(1);
406: }
407: snprintf(fname, sizeof(fname), "%s/%s", cp, MSGSRC);
1.1 deraadt 408: msgsrc = fopen(fname, "r");
409: if (msgsrc) {
410: newrc = NO;
1.11 deraadt 411: fscanf(msgsrc, "%d\n", &nextmsg);
412: fclose(msgsrc);
413: if (nextmsg > lastmsg+1) {
1.1 deraadt 414: printf("Warning: bounds have been reset (%d, %d)\n",
1.29 ! deraadt 415: firstmsg, lastmsg);
1.1 deraadt 416: truncate(fname, (off_t)0);
417: newrc = YES;
1.29 ! deraadt 418: } else if (!rcfirst)
1.1 deraadt 419: rcfirst = nextmsg - rcback;
1.29 ! deraadt 420: } else
1.11 deraadt 421: newrc = YES;
422: msgsrc = fopen(fname, "r+");
423: if (msgsrc == NULL)
424: msgsrc = fopen(fname, "w");
1.1 deraadt 425: if (msgsrc == NULL) {
426: perror(fname);
427: exit(errno);
428: }
429: if (rcfirst) {
430: if (rcfirst > lastmsg+1) {
431: printf("Warning: the last message is number %d.\n",
1.29 ! deraadt 432: lastmsg);
1.1 deraadt 433: rcfirst = nextmsg;
434: }
435: if (rcfirst > firstmsg)
436: firstmsg = rcfirst; /* don't set below first msg */
437: }
438: if (newrc) {
439: nextmsg = firstmsg;
1.29 ! deraadt 440: fseeko(msgsrc, (off_t)0, SEEK_SET);
1.1 deraadt 441: fprintf(msgsrc, "%d\n", nextmsg);
442: fflush(msgsrc);
443: }
444:
445: if (totty) {
446: struct winsize win;
447: if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1)
448: Lpp = win.ws_row;
449: if (Lpp <= 0) {
1.10 downsj 450: char *ttype = getenv("TERM");
451:
452: if (ttype != (char *)NULL) {
453: if (tgetent(NULL, ttype) <= 0
454: || (Lpp = tgetnum("li")) <= 0) {
455: Lpp = NLINES;
456: }
457: } else
1.1 deraadt 458: Lpp = NLINES;
459: }
460: }
461: Lpp -= 6; /* for headers, etc. */
462:
463: already = NO;
464: prevmsg = firstmsg;
465: printing = YES;
466: if (ruptible)
467: signal(SIGINT, onintr);
468:
469: /*
470: * Main program loop
471: */
472: for (msg = firstmsg; msg <= lastmsg; msg++) {
473:
1.5 millert 474: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, msg);
1.1 deraadt 475: newmsg = fopen(fname, "r");
476: if (newmsg == NULL)
477: continue;
478:
479: gfrsub(newmsg); /* get From and Subject fields */
480: if (locomode && !local) {
481: fclose(newmsg);
482: continue;
483: }
484:
485: if (qopt) { /* This has to be located here */
486: printf("There are new messages.\n");
487: exit(0);
488: }
489:
490: if (already && !hdrs)
491: putchar('\n');
492:
493: /*
494: * Print header
495: */
496: if (totty)
497: signal(SIGTSTP, onsusp);
498: (void) setjmp(tstpbuf);
499: already = YES;
500: nlines = 2;
501: if (seenfrom) {
502: printf("Message %d:\nFrom %s %s", msg, from, date);
503: nlines++;
504: }
505: if (seensubj) {
506: printf("Subject: %s", subj);
507: nlines++;
1.29 ! deraadt 508: } else {
1.1 deraadt 509: if (seenfrom) {
510: putchar('\n');
511: nlines++;
512: }
1.29 ! deraadt 513: while (nlines < 6 &&
! 514: fgets(inbuf, sizeof inbuf, newmsg) &&
! 515: inbuf[0] != '\n') {
1.1 deraadt 516: fputs(inbuf, stdout);
517: nlines++;
518: }
519: }
520:
521: lct = linecnt(newmsg);
522: if (lct)
523: printf("(%d%slines) ", lct, seensubj? " " : " more ");
524:
525: if (hdrs) {
526: printf("\n-----\n");
527: fclose(newmsg);
528: continue;
529: }
530:
531: /*
532: * Ask user for command
533: */
534: if (totty)
535: ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT));
536: else
537: inbuf[0] = 'y';
538: if (totty)
539: signal(SIGTSTP, SIG_DFL);
540: cmnd:
541: in = inbuf;
542: switch (*in) {
1.29 ! deraadt 543: case 'x':
! 544: case 'X':
! 545: exit(0);
1.1 deraadt 546:
1.29 ! deraadt 547: case 'q':
! 548: case 'Q':
! 549: quitit = YES;
! 550: printf("--Postponed--\n");
! 551: exit(0);
! 552: /* intentional fall-thru */
! 553: case 'n':
! 554: case 'N':
! 555: if (msg >= nextmsg)
! 556: sep = "Flushed";
! 557: prevmsg = msg;
! 558: break;
1.1 deraadt 559:
1.29 ! deraadt 560: case 'p':
! 561: case 'P':
! 562: use_pager = (*in++ == 'p');
! 563: /* intentional fallthru */
! 564: case '\n':
! 565: case 'y':
! 566: default:
! 567: if (*in == '-') {
! 568: msg = prevmsg-1;
! 569: sep = "replay";
! 570: break;
! 571: }
! 572: if (isdigit(*in)) {
! 573: msg = next(in, sizeof inbuf);
! 574: sep = in;
! 575: break;
! 576: }
1.1 deraadt 577:
1.29 ! deraadt 578: prmesg(nlines + lct + (seensubj? 1 : 0));
! 579: prevmsg = msg;
1.1 deraadt 580: }
581:
582: printf("--%s--\n", sep);
583: sep = "-";
584: if (msg >= nextmsg) {
585: nextmsg = msg + 1;
1.29 ! deraadt 586: fseeko(msgsrc, (off_t)0, SEEK_SET);
1.1 deraadt 587: fprintf(msgsrc, "%d\n", nextmsg);
588: fflush(msgsrc);
589: }
590: if (newmsg)
591: fclose(newmsg);
592: if (quitit)
593: break;
594: }
595:
596: /*
597: * Make sure .rc file gets updated
598: */
599: if (--msg >= nextmsg) {
600: nextmsg = msg + 1;
1.29 ! deraadt 601: fseeko(msgsrc, (off_t)0, SEEK_SET);
1.1 deraadt 602: fprintf(msgsrc, "%d\n", nextmsg);
603: fflush(msgsrc);
604: }
605: if (already && !quitit && lastcmd && totty) {
606: /*
607: * save or reply to last message?
608: */
609: msg = prevmsg;
610: ask(NOMORE);
611: if (inbuf[0] == '-' || isdigit(inbuf[0]))
612: goto cmnd;
613: }
614: if (!(already || hush || qopt))
615: printf("No new messages.\n");
616: exit(0);
617: }
618:
1.9 downsj 619: void
1.27 deraadt 620: prmesg(int length)
1.1 deraadt 621: {
622: FILE *outf;
623: char *env_pager;
624:
625: if (use_pager && length > Lpp) {
626: signal(SIGPIPE, SIG_IGN);
627: signal(SIGQUIT, SIG_IGN);
1.14 pjanzen 628: if ((env_pager = getenv("PAGER")) == NULL || *env_pager == '\0') {
1.11 deraadt 629: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_PAGER, Lpp);
630: } else {
1.16 deraadt 631: snprintf(cmdbuf, sizeof(cmdbuf), "%s", env_pager);
1.11 deraadt 632: }
1.1 deraadt 633: outf = popen(cmdbuf, "w");
634: if (!outf)
635: outf = stdout;
636: else
637: setbuf(outf, (char *)NULL);
638: }
639: else
640: outf = stdout;
641:
642: if (seensubj)
643: putc('\n', outf);
644:
645: while (fgets(inbuf, sizeof inbuf, newmsg)) {
646: fputs(inbuf, outf);
647: if (ferror(outf)) {
648: clearerr(outf);
649: break;
650: }
651: }
652:
653: if (outf != stdout) {
654: pclose(outf);
655: signal(SIGPIPE, SIG_DFL);
656: signal(SIGQUIT, SIG_DFL);
1.29 ! deraadt 657: } else {
1.1 deraadt 658: fflush(stdout);
659: }
660:
661: /* trick to force wait on output */
662: tcdrain(fileno(stdout));
663: }
664:
1.29 ! deraadt 665: /* ARGSUSED */
1.1 deraadt 666: void
1.29 ! deraadt 667: onintr(int signo)
1.1 deraadt 668: {
1.29 ! deraadt 669: int save_errno = errno;
! 670:
1.1 deraadt 671: signal(SIGINT, onintr);
672: if (mailing)
673: unlink(fname);
674: if (sending) {
675: unlink(fname);
1.29 ! deraadt 676: write(STDOUT_FILENO, "--Killed--\n", strlen("--Killed--\n"));
! 677: _exit(1);
1.1 deraadt 678: }
679: if (printing) {
1.29 ! deraadt 680: write(STDOUT_FILENO, "\n", 1);
1.1 deraadt 681: if (hdrs)
1.29 ! deraadt 682: _exit(0);
1.1 deraadt 683: sep = "Interrupt";
684: if (newmsg)
1.29 ! deraadt 685: fseeko(newmsg, (off_t)0, SEEK_END);
1.1 deraadt 686: intrpflg = YES;
687: }
1.29 ! deraadt 688: errno = save_errno;
1.1 deraadt 689: }
690:
691: /*
692: * We have just gotten a susp. Suspend and prepare to resume.
693: */
1.29 ! deraadt 694: /* ARGSUSED */
1.1 deraadt 695: void
1.29 ! deraadt 696: onsusp(int signo)
1.1 deraadt 697: {
1.29 ! deraadt 698: int save_errno = errno;
1.18 millert 699: sigset_t emptyset;
700:
1.1 deraadt 701: signal(SIGTSTP, SIG_DFL);
1.18 millert 702: sigemptyset(&emptyset);
703: sigprocmask(SIG_SETMASK, &emptyset, NULL);
1.1 deraadt 704: kill(0, SIGTSTP);
705: signal(SIGTSTP, onsusp);
1.29 ! deraadt 706: errno = save_errno;
! 707:
1.1 deraadt 708: if (!mailing)
1.20 art 709: longjmp(tstpbuf, 1);
1.1 deraadt 710: }
711:
1.9 downsj 712: int
1.27 deraadt 713: linecnt(FILE *f)
1.1 deraadt 714: {
1.29 ! deraadt 715: off_t oldpos = ftello(f);
! 716:
1.1 deraadt 717: int l = 0;
718: char lbuf[BUFSIZ];
719:
720: while (fgets(lbuf, sizeof lbuf, f))
721: l++;
722: clearerr(f);
1.29 ! deraadt 723: fseeko(f, oldpos, SEEK_SET);
1.1 deraadt 724: return (l);
725: }
726:
1.9 downsj 727: int
1.27 deraadt 728: next(char *buf, int len)
1.1 deraadt 729: {
730: int i;
731: sscanf(buf, "%d", &i);
1.24 deraadt 732: snprintf(buf, len, "Goto %d", i);
1.1 deraadt 733: return(--i);
734: }
735:
1.9 downsj 736: void
1.27 deraadt 737: ask(char *prompt)
1.1 deraadt 738: {
739: char inch;
1.2 deraadt 740: int n, cmsg, fd;
1.1 deraadt 741: off_t oldpos;
742: FILE *cpfrom, *cpto;
743:
744: printf("%s ", prompt);
745: fflush(stdout);
746: intrpflg = NO;
747: (void) fgets(inbuf, sizeof inbuf, stdin);
748: if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n')
749: inbuf[n - 1] = '\0';
750: if (intrpflg)
751: inbuf[0] = 'x';
752:
753: /*
754: * Handle 'mail' and 'save' here.
755: */
1.11 deraadt 756: if (((inch = inbuf[0]) == 's' || inch == 'm') && !restricted) {
1.1 deraadt 757: if (inbuf[1] == '-')
758: cmsg = prevmsg;
759: else if (isdigit(inbuf[1]))
760: cmsg = atoi(&inbuf[1]);
761: else
762: cmsg = msg;
1.5 millert 763: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, cmsg);
1.1 deraadt 764:
1.29 ! deraadt 765: oldpos = ftello(newmsg);
1.1 deraadt 766:
767: cpfrom = fopen(fname, "r");
768: if (!cpfrom) {
769: printf("Message %d not found\n", cmsg);
770: ask (prompt);
771: return;
772: }
773:
774: if (inch == 's') {
775: in = nxtfld(inbuf);
776: if (*in) {
1.22 ho 777: for (n=0;
1.29 ! deraadt 778: in[n] > ' ' && n < sizeof fname - 1;
! 779: n++) {
1.1 deraadt 780: fname[n] = in[n];
781: }
782: fname[n] = NULL;
783: }
784: else
1.25 deraadt 785: strlcpy(fname, "Messages", sizeof fname);
1.22 ho 786: fd = open(fname, O_RDWR|O_EXCL|O_CREAT|O_APPEND, 0666);
1.29 ! deraadt 787: } else {
1.25 deraadt 788: strlcpy(fname, _PATH_TMPFILE, sizeof fname);
1.7 deraadt 789: fd = mkstemp(fname);
790: if (fd != -1) {
791: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_MAIL, fname);
792: mailing = YES;
793: }
794: }
795: if (fd == -1 || (cpto = fdopen(fd, "a")) == NULL) {
796: if (fd != -1)
1.2 deraadt 797: close(fd);
1.1 deraadt 798: perror(fname);
799: mailing = NO;
1.29 ! deraadt 800: fseeko(newmsg, oldpos, SEEK_SET);
1.1 deraadt 801: ask(prompt);
802: return;
803: }
804:
1.9 downsj 805: while ((n = fread(inbuf, 1, sizeof inbuf, cpfrom)))
1.1 deraadt 806: fwrite(inbuf, 1, n, cpto);
807:
808: fclose(cpfrom);
809: fclose(cpto);
1.29 ! deraadt 810: fseeko(newmsg, oldpos, SEEK_SET); /* reposition current message */
1.1 deraadt 811: if (inch == 's')
812: printf("Message %d saved in \"%s\"\n", cmsg, fname);
813: else {
814: system(cmdbuf);
815: unlink(fname);
816: mailing = NO;
817: }
818: ask(prompt);
819: }
820: }
821:
1.9 downsj 822: void
1.27 deraadt 823: gfrsub(FILE *infile)
1.1 deraadt 824: {
825: off_t frompos;
826:
827: seensubj = seenfrom = NO;
828: local = YES;
829: subj[0] = from[0] = date[0] = NULL;
830:
831: /*
832: * Is this a normal message?
833: */
834: if (fgets(inbuf, sizeof inbuf, infile)) {
835: if (strncmp(inbuf, "From", 4)==0) {
836: /*
837: * expected form starts with From
838: */
839: seenfrom = YES;
1.29 ! deraadt 840: frompos = ftello(infile);
1.1 deraadt 841: ptr = from;
842: in = nxtfld(inbuf);
1.8 deraadt 843: if (*in) {
844: while (*in && *in > ' ' &&
845: ptr - from < sizeof from -1) {
846: if (*in == ':' || *in == '@' || *in == '!')
847: local = NO;
848: *ptr++ = *in++;
849: }
1.1 deraadt 850: }
851: *ptr = NULL;
852: if (*(in = nxtfld(in)))
853: strncpy(date, in, sizeof date);
854: else {
855: date[0] = '\n';
856: date[1] = NULL;
857: }
1.29 ! deraadt 858: } else {
1.1 deraadt 859: /*
860: * not the expected form
861: */
1.29 ! deraadt 862: fseeko(infile, (off_t)0, SEEK_SET);
1.1 deraadt 863: return;
864: }
1.29 ! deraadt 865: } else
1.1 deraadt 866: /*
867: * empty file ?
868: */
869: return;
870:
871: /*
872: * look for Subject line until EOF or a blank line
873: */
1.29 ! deraadt 874: while (fgets(inbuf, sizeof inbuf, infile) &&
! 875: !(blankline = (inbuf[0] == '\n'))) {
1.1 deraadt 876: /*
877: * extract Subject line
878: */
879: if (!seensubj && strncmp(inbuf, "Subj", 4)==0) {
880: seensubj = YES;
1.29 ! deraadt 881: frompos = ftello(infile);
1.1 deraadt 882: strncpy(subj, nxtfld(inbuf), sizeof subj);
883: }
884: }
885: if (!blankline)
886: /*
887: * ran into EOF
888: */
1.29 ! deraadt 889: fseeko(infile, frompos, SEEK_SET);
1.1 deraadt 890:
891: if (!seensubj)
892: /*
893: * for possible use with Mail
894: */
895: strncpy(subj, "(No Subject)\n", sizeof subj);
896: }
897:
898: char *
1.27 deraadt 899: nxtfld(char *s)
1.1 deraadt 900: {
1.29 ! deraadt 901: if (*s)
! 902: while (*s && *s > ' ')
! 903: s++; /* skip over this field */
! 904: if (*s)
! 905: while (*s && *s <= ' ')
! 906: s++; /* find start of next field */
1.1 deraadt 907: return (s);
908: }