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1.28 ! jmc 1: /* $OpenBSD: msgs.c,v 1.27 2003/06/10 22:20:48 deraadt 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
1.28 ! jmc 43: static char rcsid[] = "$OpenBSD: msgs.c,v 1.27 2003/06/10 22:20:48 deraadt 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]);
186: }
187: else if (isdigit(argv[0][1])) { /* backward offset */
188: rcback = atoi( &( argv[0][1] ) );
189: }
190: else {
191: ptr = *argv;
192: while (*ptr) switch (*ptr++) {
193:
194: case '-':
195: break;
196:
197: case 'c':
198: if (uid != SUPERUSER && uid != DAEMON) {
199: fprintf(stderr, "Sorry\n");
200: exit(1);
201: }
202: clean = YES;
203: break;
204:
205: case 'f': /* silently */
206: hush = YES;
207: break;
208:
209: case 'h': /* headers only */
210: hdrs = YES;
211: break;
212:
213: case 'l': /* local msgs only */
214: locomode = YES;
215: break;
216:
217: case 'o': /* option to save last message */
218: lastcmd = YES;
219: break;
220:
221: case 'p': /* pipe thru 'more' during long msgs */
222: use_pager = YES;
223: break;
224:
225: case 'q': /* query only */
226: qopt = YES;
227: break;
228:
1.11 deraadt 229: case 'r': /* restricted */
230: restricted = YES;
231: break;
1.1 deraadt 232:
233:
234: case 's': /* sending TO msgs */
235: send_msg = YES;
236: break;
237:
238: default:
239: fprintf(stderr,
1.28 ! jmc 240: "usage: msgs [fhlopqr] [[-]number]\n"
! 241: " msgs [-s]\n"
! 242: " msgs [-c [-days]]\n");
1.1 deraadt 243: exit(1);
244: }
245: }
246: argc--, argv++;
247: }
248:
249: /*
250: * determine current message bounds
251: */
1.5 millert 252: snprintf(fname, sizeof(fname), "%s/%s", _PATH_MSGS, BOUNDS);
1.1 deraadt 253: bounds = fopen(fname, "r");
254:
1.12 deraadt 255: if (bounds == NULL) {
1.13 aaron 256: if (errno == ENOENT) {
257: if ((bounds = fopen(fname, "w+")) == NULL) {
258: perror(fname);
259: exit(1);
260: }
261: fprintf(bounds, "1 0\n");
262: rewind(bounds);
263: }
264: else {
265: perror(fname);
266: exit(1);
267: }
1.1 deraadt 268: }
1.12 deraadt 269:
270: fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg);
271: fclose(bounds);
272: blast = lastmsg; /* save upper bound */
1.1 deraadt 273:
274: if (clean)
275: keep = t - (rcback? rcback : NDAYS) DAYS;
276:
277: if (clean || bounds == NULL) { /* relocate message bounds */
278: struct dirent *dp;
279: struct stat stbuf;
280: bool seenany = NO;
281: DIR *dirp;
282:
283: dirp = opendir(_PATH_MSGS);
284: if (dirp == NULL) {
285: perror(_PATH_MSGS);
286: exit(errno);
287: }
288: chmod(fname, CMODE);
289:
290: firstmsg = 32767;
291: lastmsg = 0;
292:
293: for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){
1.19 mpech 294: int i = 0;
1.1 deraadt 295:
1.17 millert 296: cp = dp->d_name;
1.1 deraadt 297: if (dp->d_ino == 0)
298: continue;
299: if (dp->d_namlen == 0)
300: continue;
301:
302: if (clean)
1.5 millert 303: snprintf(inbuf, sizeof(inbuf), "%s/%s",
304: _PATH_MSGS, cp);
1.1 deraadt 305:
306: while (isdigit(*cp))
307: i = i * 10 + *cp++ - '0';
308: if (*cp)
309: continue; /* not a message! */
310:
311: if (clean) {
312: if (stat(inbuf, &stbuf) != 0)
313: continue;
314: if (stbuf.st_mtime < keep
315: && stbuf.st_mode&S_IWRITE) {
316: unlink(inbuf);
317: continue;
318: }
319: }
320:
321: if (i > lastmsg)
322: lastmsg = i;
323: if (i < firstmsg)
324: firstmsg = i;
325: seenany = YES;
326: }
327: closedir(dirp);
328:
329: if (!seenany) {
330: if (blast != 0) /* never lower the upper bound! */
331: lastmsg = blast;
332: firstmsg = lastmsg + 1;
333: }
334: else if (blast > lastmsg)
335: lastmsg = blast;
336:
337: if (!send_msg) {
338: bounds = fopen(fname, "w");
339: if (bounds == NULL) {
340: perror(fname);
341: exit(errno);
342: }
343: chmod(fname, CMODE);
344: fprintf(bounds, "%d %d\n", firstmsg, lastmsg);
345: fclose(bounds);
346: }
347: }
348:
349: if (send_msg) {
350: /*
351: * Send mode - place msgs in _PATH_MSGS
352: */
353: bounds = fopen(fname, "w");
354: if (bounds == NULL) {
355: perror(fname);
356: exit(errno);
357: }
358:
359: nextmsg = lastmsg + 1;
1.5 millert 360: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, nextmsg);
1.1 deraadt 361: newmsg = fopen(fname, "w");
362: if (newmsg == NULL) {
363: perror(fname);
364: exit(errno);
365: }
366: chmod(fname, 0644);
367:
368: fprintf(bounds, "%d %d\n", firstmsg, nextmsg);
369: fclose(bounds);
370:
371: sending = YES;
372: if (ruptible)
373: signal(SIGINT, onintr);
374:
375: if (isatty(fileno(stdin))) {
376: ptr = getpwuid(uid)->pw_name;
377: printf("Message %d:\nFrom %s %sSubject: ",
378: nextmsg, ptr, ctime(&t));
379: fflush(stdout);
380: fgets(inbuf, sizeof inbuf, stdin);
381: putchar('\n');
382: fflush(stdout);
383: fprintf(newmsg, "From %s %sSubject: %s\n",
384: ptr, ctime(&t), inbuf);
385: blankline = seensubj = YES;
386: }
387: else
388: blankline = seensubj = NO;
389: for (;;) {
390: fgets(inbuf, sizeof inbuf, stdin);
391: if (feof(stdin) || ferror(stdin))
392: break;
393: blankline = (blankline || (inbuf[0] == '\n'));
394: seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0)));
395: fputs(inbuf, newmsg);
396: }
397: #ifdef OBJECT
398: if (!seensubj) {
399: printf("NOTICE: Messages should have a Subject field!\n");
400: #ifdef REJECT
401: unlink(fname);
402: #endif
403: exit(1);
404: }
405: #endif
406: exit(ferror(stdin));
407: }
408: if (clean)
409: exit(0);
410:
411: /*
412: * prepare to display messages
413: */
414: totty = (isatty(fileno(stdout)) != 0);
415: use_pager = use_pager && totty;
416:
1.17 millert 417: if ((cp = getenv("HOME")) == NULL || *cp == '\0') {
418: fprintf(stderr, "Error, no home directory!\n");
419: exit(1);
420: }
421: snprintf(fname, sizeof(fname), "%s/%s", cp, MSGSRC);
1.1 deraadt 422: msgsrc = fopen(fname, "r");
423: if (msgsrc) {
424: newrc = NO;
1.11 deraadt 425: fscanf(msgsrc, "%d\n", &nextmsg);
426: fclose(msgsrc);
427: if (nextmsg > lastmsg+1) {
1.1 deraadt 428: printf("Warning: bounds have been reset (%d, %d)\n",
429: firstmsg, lastmsg);
430: truncate(fname, (off_t)0);
431: newrc = YES;
432: }
433: else if (!rcfirst)
434: rcfirst = nextmsg - rcback;
435: }
1.11 deraadt 436: else
437: newrc = YES;
438: msgsrc = fopen(fname, "r+");
439: if (msgsrc == NULL)
440: msgsrc = fopen(fname, "w");
1.1 deraadt 441: if (msgsrc == NULL) {
442: perror(fname);
443: exit(errno);
444: }
445: if (rcfirst) {
446: if (rcfirst > lastmsg+1) {
447: printf("Warning: the last message is number %d.\n",
448: lastmsg);
449: rcfirst = nextmsg;
450: }
451: if (rcfirst > firstmsg)
452: firstmsg = rcfirst; /* don't set below first msg */
453: }
454: if (newrc) {
455: nextmsg = firstmsg;
456: fseek(msgsrc, 0L, 0);
457: fprintf(msgsrc, "%d\n", nextmsg);
458: fflush(msgsrc);
459: }
460:
461: if (totty) {
462: struct winsize win;
463: if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1)
464: Lpp = win.ws_row;
465: if (Lpp <= 0) {
1.10 downsj 466: char *ttype = getenv("TERM");
467:
468: if (ttype != (char *)NULL) {
469: if (tgetent(NULL, ttype) <= 0
470: || (Lpp = tgetnum("li")) <= 0) {
471: Lpp = NLINES;
472: }
473: } else
1.1 deraadt 474: Lpp = NLINES;
475: }
476: }
477: Lpp -= 6; /* for headers, etc. */
478:
479: already = NO;
480: prevmsg = firstmsg;
481: printing = YES;
482: if (ruptible)
483: signal(SIGINT, onintr);
484:
485: /*
486: * Main program loop
487: */
488: for (msg = firstmsg; msg <= lastmsg; msg++) {
489:
1.5 millert 490: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, msg);
1.1 deraadt 491: newmsg = fopen(fname, "r");
492: if (newmsg == NULL)
493: continue;
494:
495: gfrsub(newmsg); /* get From and Subject fields */
496: if (locomode && !local) {
497: fclose(newmsg);
498: continue;
499: }
500:
501: if (qopt) { /* This has to be located here */
502: printf("There are new messages.\n");
503: exit(0);
504: }
505:
506: if (already && !hdrs)
507: putchar('\n');
508:
509: /*
510: * Print header
511: */
512: if (totty)
513: signal(SIGTSTP, onsusp);
514: (void) setjmp(tstpbuf);
515: already = YES;
516: nlines = 2;
517: if (seenfrom) {
518: printf("Message %d:\nFrom %s %s", msg, from, date);
519: nlines++;
520: }
521: if (seensubj) {
522: printf("Subject: %s", subj);
523: nlines++;
524: }
525: else {
526: if (seenfrom) {
527: putchar('\n');
528: nlines++;
529: }
530: while (nlines < 6
531: && fgets(inbuf, sizeof inbuf, newmsg)
532: && inbuf[0] != '\n') {
533: fputs(inbuf, stdout);
534: nlines++;
535: }
536: }
537:
538: lct = linecnt(newmsg);
539: if (lct)
540: printf("(%d%slines) ", lct, seensubj? " " : " more ");
541:
542: if (hdrs) {
543: printf("\n-----\n");
544: fclose(newmsg);
545: continue;
546: }
547:
548: /*
549: * Ask user for command
550: */
551: if (totty)
552: ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT));
553: else
554: inbuf[0] = 'y';
555: if (totty)
556: signal(SIGTSTP, SIG_DFL);
557: cmnd:
558: in = inbuf;
559: switch (*in) {
560: case 'x':
561: case 'X':
562: exit(0);
563:
564: case 'q':
565: case 'Q':
566: quitit = YES;
567: printf("--Postponed--\n");
568: exit(0);
569: /* intentional fall-thru */
570: case 'n':
571: case 'N':
572: if (msg >= nextmsg) sep = "Flushed";
573: prevmsg = msg;
574: break;
575:
576: case 'p':
577: case 'P':
578: use_pager = (*in++ == 'p');
579: /* intentional fallthru */
580: case '\n':
581: case 'y':
582: default:
583: if (*in == '-') {
584: msg = prevmsg-1;
585: sep = "replay";
586: break;
587: }
588: if (isdigit(*in)) {
1.24 deraadt 589: msg = next(in, sizeof inbuf);
1.1 deraadt 590: sep = in;
591: break;
592: }
593:
594: prmesg(nlines + lct + (seensubj? 1 : 0));
595: prevmsg = msg;
596:
597: }
598:
599: printf("--%s--\n", sep);
600: sep = "-";
601: if (msg >= nextmsg) {
602: nextmsg = msg + 1;
603: fseek(msgsrc, 0L, 0);
604: fprintf(msgsrc, "%d\n", nextmsg);
605: fflush(msgsrc);
606: }
607: if (newmsg)
608: fclose(newmsg);
609: if (quitit)
610: break;
611: }
612:
613: /*
614: * Make sure .rc file gets updated
615: */
616: if (--msg >= nextmsg) {
617: nextmsg = msg + 1;
618: fseek(msgsrc, 0L, 0);
619: fprintf(msgsrc, "%d\n", nextmsg);
620: fflush(msgsrc);
621: }
622: if (already && !quitit && lastcmd && totty) {
623: /*
624: * save or reply to last message?
625: */
626: msg = prevmsg;
627: ask(NOMORE);
628: if (inbuf[0] == '-' || isdigit(inbuf[0]))
629: goto cmnd;
630: }
631: if (!(already || hush || qopt))
632: printf("No new messages.\n");
633: exit(0);
634: }
635:
1.9 downsj 636: void
1.27 deraadt 637: prmesg(int length)
1.1 deraadt 638: {
639: FILE *outf;
640: char *env_pager;
641:
642: if (use_pager && length > Lpp) {
643: signal(SIGPIPE, SIG_IGN);
644: signal(SIGQUIT, SIG_IGN);
1.14 pjanzen 645: if ((env_pager = getenv("PAGER")) == NULL || *env_pager == '\0') {
1.11 deraadt 646: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_PAGER, Lpp);
647: } else {
1.16 deraadt 648: snprintf(cmdbuf, sizeof(cmdbuf), "%s", env_pager);
1.11 deraadt 649: }
1.1 deraadt 650: outf = popen(cmdbuf, "w");
651: if (!outf)
652: outf = stdout;
653: else
654: setbuf(outf, (char *)NULL);
655: }
656: else
657: outf = stdout;
658:
659: if (seensubj)
660: putc('\n', outf);
661:
662: while (fgets(inbuf, sizeof inbuf, newmsg)) {
663: fputs(inbuf, outf);
664: if (ferror(outf)) {
665: clearerr(outf);
666: break;
667: }
668: }
669:
670: if (outf != stdout) {
671: pclose(outf);
672: signal(SIGPIPE, SIG_DFL);
673: signal(SIGQUIT, SIG_DFL);
674: }
675: else {
676: fflush(stdout);
677: }
678:
679: /* trick to force wait on output */
680: tcdrain(fileno(stdout));
681: }
682:
683: void
1.27 deraadt 684: onintr(int unused)
1.1 deraadt 685: {
686: signal(SIGINT, onintr);
687: if (mailing)
688: unlink(fname);
689: if (sending) {
690: unlink(fname);
691: puts("--Killed--");
692: exit(1);
693: }
694: if (printing) {
695: putchar('\n');
696: if (hdrs)
697: exit(0);
698: sep = "Interrupt";
699: if (newmsg)
700: fseek(newmsg, 0L, 2);
701: intrpflg = YES;
702: }
703: }
704:
705: /*
706: * We have just gotten a susp. Suspend and prepare to resume.
707: */
708: void
1.27 deraadt 709: onsusp(int unused)
1.1 deraadt 710: {
1.18 millert 711: sigset_t emptyset;
712:
1.1 deraadt 713: signal(SIGTSTP, SIG_DFL);
1.18 millert 714: sigemptyset(&emptyset);
715: sigprocmask(SIG_SETMASK, &emptyset, NULL);
1.1 deraadt 716: kill(0, SIGTSTP);
717: signal(SIGTSTP, onsusp);
718: if (!mailing)
1.20 art 719: longjmp(tstpbuf, 1);
1.1 deraadt 720: }
721:
1.9 downsj 722: int
1.27 deraadt 723: linecnt(FILE *f)
1.1 deraadt 724: {
725: off_t oldpos = ftell(f);
726: int l = 0;
727: char lbuf[BUFSIZ];
728:
729: while (fgets(lbuf, sizeof lbuf, f))
730: l++;
731: clearerr(f);
732: fseek(f, oldpos, 0);
733: return (l);
734: }
735:
1.9 downsj 736: int
1.27 deraadt 737: next(char *buf, int len)
1.1 deraadt 738: {
739: int i;
740: sscanf(buf, "%d", &i);
1.24 deraadt 741: snprintf(buf, len, "Goto %d", i);
1.1 deraadt 742: return(--i);
743: }
744:
1.9 downsj 745: void
1.27 deraadt 746: ask(char *prompt)
1.1 deraadt 747: {
748: char inch;
1.2 deraadt 749: int n, cmsg, fd;
1.1 deraadt 750: off_t oldpos;
751: FILE *cpfrom, *cpto;
752:
753: printf("%s ", prompt);
754: fflush(stdout);
755: intrpflg = NO;
756: (void) fgets(inbuf, sizeof inbuf, stdin);
757: if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n')
758: inbuf[n - 1] = '\0';
759: if (intrpflg)
760: inbuf[0] = 'x';
761:
762: /*
763: * Handle 'mail' and 'save' here.
764: */
1.11 deraadt 765: if (((inch = inbuf[0]) == 's' || inch == 'm') && !restricted) {
1.1 deraadt 766: if (inbuf[1] == '-')
767: cmsg = prevmsg;
768: else if (isdigit(inbuf[1]))
769: cmsg = atoi(&inbuf[1]);
770: else
771: cmsg = msg;
1.5 millert 772: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, cmsg);
1.1 deraadt 773:
774: oldpos = ftell(newmsg);
775:
776: cpfrom = fopen(fname, "r");
777: if (!cpfrom) {
778: printf("Message %d not found\n", cmsg);
779: ask (prompt);
780: return;
781: }
782:
783: if (inch == 's') {
784: in = nxtfld(inbuf);
785: if (*in) {
1.22 ho 786: for (n=0;
1.23 ho 787: in[n] > ' ' && n < sizeof fname - 1;
1.22 ho 788: n++) {
1.1 deraadt 789: fname[n] = in[n];
790: }
791: fname[n] = NULL;
792: }
793: else
1.25 deraadt 794: strlcpy(fname, "Messages", sizeof fname);
1.22 ho 795: fd = open(fname, O_RDWR|O_EXCL|O_CREAT|O_APPEND, 0666);
1.1 deraadt 796: }
797: else {
1.25 deraadt 798: strlcpy(fname, _PATH_TMPFILE, sizeof fname);
1.7 deraadt 799: fd = mkstemp(fname);
800: if (fd != -1) {
801: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_MAIL, fname);
802: mailing = YES;
803: }
804: }
805: if (fd == -1 || (cpto = fdopen(fd, "a")) == NULL) {
806: if (fd != -1)
1.2 deraadt 807: close(fd);
1.1 deraadt 808: perror(fname);
809: mailing = NO;
810: fseek(newmsg, oldpos, 0);
811: ask(prompt);
812: return;
813: }
814:
1.9 downsj 815: while ((n = fread(inbuf, 1, sizeof inbuf, cpfrom)))
1.1 deraadt 816: fwrite(inbuf, 1, n, cpto);
817:
818: fclose(cpfrom);
819: fclose(cpto);
820: fseek(newmsg, oldpos, 0); /* reposition current message */
821: if (inch == 's')
822: printf("Message %d saved in \"%s\"\n", cmsg, fname);
823: else {
824: system(cmdbuf);
825: unlink(fname);
826: mailing = NO;
827: }
828: ask(prompt);
829: }
830: }
831:
1.9 downsj 832: void
1.27 deraadt 833: gfrsub(FILE *infile)
1.1 deraadt 834: {
835: off_t frompos;
836:
837: seensubj = seenfrom = NO;
838: local = YES;
839: subj[0] = from[0] = date[0] = NULL;
840:
841: /*
842: * Is this a normal message?
843: */
844: if (fgets(inbuf, sizeof inbuf, infile)) {
845: if (strncmp(inbuf, "From", 4)==0) {
846: /*
847: * expected form starts with From
848: */
849: seenfrom = YES;
850: frompos = ftell(infile);
851: ptr = from;
852: in = nxtfld(inbuf);
1.8 deraadt 853: if (*in) {
854: while (*in && *in > ' ' &&
855: ptr - from < sizeof from -1) {
856: if (*in == ':' || *in == '@' || *in == '!')
857: local = NO;
858: *ptr++ = *in++;
859: }
1.1 deraadt 860: }
861: *ptr = NULL;
862: if (*(in = nxtfld(in)))
863: strncpy(date, in, sizeof date);
864: else {
865: date[0] = '\n';
866: date[1] = NULL;
867: }
868: }
869: else {
870: /*
871: * not the expected form
872: */
873: fseek(infile, 0L, 0);
874: return;
875: }
876: }
877: else
878: /*
879: * empty file ?
880: */
881: return;
882:
883: /*
884: * look for Subject line until EOF or a blank line
885: */
886: while (fgets(inbuf, sizeof inbuf, infile)
887: && !(blankline = (inbuf[0] == '\n'))) {
888: /*
889: * extract Subject line
890: */
891: if (!seensubj && strncmp(inbuf, "Subj", 4)==0) {
892: seensubj = YES;
893: frompos = ftell(infile);
894: strncpy(subj, nxtfld(inbuf), sizeof subj);
895: }
896: }
897: if (!blankline)
898: /*
899: * ran into EOF
900: */
901: fseek(infile, frompos, 0);
902:
903: if (!seensubj)
904: /*
905: * for possible use with Mail
906: */
907: strncpy(subj, "(No Subject)\n", sizeof subj);
908: }
909:
910: char *
1.27 deraadt 911: nxtfld(char *s)
1.1 deraadt 912: {
913: if (*s) while (*s && *s > ' ') s++; /* skip over this field */
914: if (*s) while (*s && *s <= ' ') s++; /* find start of next field */
915: return (s);
916: }