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1.11 ! deraadt 1: /* $OpenBSD: msgs.c,v 1.10 1997/04/28 06:03:51 downsj 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1980, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)msgs.c 8.2 (Berkeley) 4/28/95";
46: #else
1.11 ! deraadt 47: static char rcsid[] = "$OpenBSD: msgs.c,v 1.10 1997/04/28 06:03:51 downsj Exp $";
1.1 deraadt 48: #endif
49: #endif /* not lint */
50:
51: /*
52: * msgs - a user bulletin board program
53: *
54: * usage:
55: * msgs [fhlopqr] [[-]number] to read messages
56: * msgs -s to place messages
57: * msgs -c [-days] to clean up the bulletin board
58: *
59: * prompt commands are:
60: * y print message
61: * n flush message, go to next message
62: * q flush message, quit
63: * p print message, turn on 'pipe thru more' mode
64: * P print message, turn off 'pipe thru more' mode
65: * - reprint last message
66: * s[-][<num>] [<filename>] save message
67: * m[-][<num>] mail with message in temp mbox
68: * x exit without flushing this message
69: * <num> print message number <num>
70: */
71:
72: #define OBJECT /* will object to messages without Subjects */
73: #define REJECT /* will reject messages without Subjects
74: (OBJECT must be defined also) */
1.9 downsj 75: #undef UNBUFFERED /* use unbuffered output */
1.1 deraadt 76:
77: #include <sys/param.h>
78: #include <sys/ioctl.h>
1.2 deraadt 79: #include <sys/file.h>
1.1 deraadt 80: #include <sys/stat.h>
81: #include <dirent.h>
82: #include <ctype.h>
83: #include <errno.h>
84: #include <pwd.h>
85: #include <setjmp.h>
86: #include <signal.h>
87: #include <stdio.h>
88: #include <stdlib.h>
89: #include <string.h>
1.9 downsj 90: #include <term.h>
1.1 deraadt 91: #include <termios.h>
92: #include <time.h>
93: #include <unistd.h>
94: #include "pathnames.h"
95:
96: #define CMODE 0664 /* bounds file creation mode */
97: #define NO 0
98: #define YES 1
99: #define SUPERUSER 0 /* superuser uid */
100: #define DAEMON 1 /* daemon uid */
101: #define NLINES 24 /* default number of lines/crt screen */
102: #define NDAYS 21 /* default keep time for messages */
103: #define DAYS *24*60*60 /* seconds/day */
104: #define MSGSRC ".msgsrc" /* user's rc file */
105: #define BOUNDS "bounds" /* message bounds file */
106: #define NEXT "Next message? [yq]"
107: #define MORE "More? [ynq]"
108: #define NOMORE "(No more) [q] ?"
109:
110: typedef char bool;
111:
112: FILE *msgsrc;
113: FILE *newmsg;
114: char *sep = "-";
115: char inbuf[BUFSIZ];
1.8 deraadt 116: char fname[MAXPATHLEN];
117: char cmdbuf[MAXPATHLEN + MAXPATHLEN];
1.1 deraadt 118: char subj[128];
119: char from[128];
120: char date[128];
121: char *ptr;
122: char *in;
123: bool local;
124: bool ruptible;
125: bool totty;
126: bool seenfrom;
127: bool seensubj;
128: bool blankline;
129: bool printing = NO;
130: bool mailing = NO;
131: bool quitit = NO;
132: bool sending = NO;
133: bool intrpflg = NO;
134: bool restricted = NO;
135: int uid;
136: int msg;
137: int prevmsg;
138: int lct;
139: int nlines;
140: int Lpp = 0;
141: time_t t;
142: time_t keep;
143:
1.9 downsj 144: void prmesg __P((int));
145: void onintr __P((int));
146: void onsusp __P((int));
147: int linecnt __P((FILE *));
148: int next __P((char *));
149: void ask __P((char *));
150: void gfrsub __P((FILE *));
151: char *nxtfld __P((char *));
1.1 deraadt 152:
153: /* option initialization */
154: bool hdrs = NO;
155: bool qopt = NO;
156: bool hush = NO;
157: bool send_msg = NO;
158: bool locomode = NO;
159: bool use_pager = NO;
160: bool clean = NO;
161: bool lastcmd = NO;
162: jmp_buf tstpbuf;
163:
1.9 downsj 164: int
1.1 deraadt 165: main(argc, argv)
1.9 downsj 166: int argc;
167: char *argv[];
1.1 deraadt 168: {
169: bool newrc, already;
170: int rcfirst = 0; /* first message to print (from .rc) */
171: int rcback = 0; /* amount to back off of rcfirst */
172: int firstmsg, nextmsg, lastmsg = 0;
173: int blast = 0;
174: FILE *bounds;
175:
176: #ifdef UNBUFFERED
177: setbuf(stdout, NULL);
178: #endif
179:
180: time(&t);
1.6 tholo 181: seteuid(uid = getuid());
182: setuid(uid);
1.1 deraadt 183: ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL);
184: if (ruptible)
185: signal(SIGINT, SIG_DFL);
186:
187: argc--, argv++;
188: while (argc > 0) {
189: if (isdigit(argv[0][0])) { /* starting message # */
190: rcfirst = atoi(argv[0]);
191: }
192: else if (isdigit(argv[0][1])) { /* backward offset */
193: rcback = atoi( &( argv[0][1] ) );
194: }
195: else {
196: ptr = *argv;
197: while (*ptr) switch (*ptr++) {
198:
199: case '-':
200: break;
201:
202: case 'c':
203: if (uid != SUPERUSER && uid != DAEMON) {
204: fprintf(stderr, "Sorry\n");
205: exit(1);
206: }
207: clean = YES;
208: break;
209:
210: case 'f': /* silently */
211: hush = YES;
212: break;
213:
214: case 'h': /* headers only */
215: hdrs = YES;
216: break;
217:
218: case 'l': /* local msgs only */
219: locomode = YES;
220: break;
221:
222: case 'o': /* option to save last message */
223: lastcmd = YES;
224: break;
225:
226: case 'p': /* pipe thru 'more' during long msgs */
227: use_pager = YES;
228: break;
229:
230: case 'q': /* query only */
231: qopt = YES;
232: break;
233:
1.11 ! deraadt 234: case 'r': /* restricted */
! 235: restricted = YES;
! 236: break;
1.1 deraadt 237:
238:
239: case 's': /* sending TO msgs */
240: send_msg = YES;
241: break;
242:
243: default:
244: fprintf(stderr,
245: "usage: msgs [fhlopqr] [[-]number]\n");
246: exit(1);
247: }
248: }
249: argc--, argv++;
250: }
251:
252: /*
253: * determine current message bounds
254: */
1.5 millert 255: snprintf(fname, sizeof(fname), "%s/%s", _PATH_MSGS, BOUNDS);
1.1 deraadt 256: bounds = fopen(fname, "r");
257:
258: if (bounds != NULL) {
259: fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg);
260: fclose(bounds);
261: blast = lastmsg; /* save upper bound */
262: }
263:
264: if (clean)
265: keep = t - (rcback? rcback : NDAYS) DAYS;
266:
267: if (clean || bounds == NULL) { /* relocate message bounds */
268: struct dirent *dp;
269: struct stat stbuf;
270: bool seenany = NO;
271: DIR *dirp;
272:
273: dirp = opendir(_PATH_MSGS);
274: if (dirp == NULL) {
275: perror(_PATH_MSGS);
276: exit(errno);
277: }
278: chmod(fname, CMODE);
279:
280: firstmsg = 32767;
281: lastmsg = 0;
282:
283: for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){
284: register char *cp = dp->d_name;
285: register int i = 0;
286:
287: if (dp->d_ino == 0)
288: continue;
289: if (dp->d_namlen == 0)
290: continue;
291:
292: if (clean)
1.5 millert 293: snprintf(inbuf, sizeof(inbuf), "%s/%s",
294: _PATH_MSGS, cp);
1.1 deraadt 295:
296: while (isdigit(*cp))
297: i = i * 10 + *cp++ - '0';
298: if (*cp)
299: continue; /* not a message! */
300:
301: if (clean) {
302: if (stat(inbuf, &stbuf) != 0)
303: continue;
304: if (stbuf.st_mtime < keep
305: && stbuf.st_mode&S_IWRITE) {
306: unlink(inbuf);
307: continue;
308: }
309: }
310:
311: if (i > lastmsg)
312: lastmsg = i;
313: if (i < firstmsg)
314: firstmsg = i;
315: seenany = YES;
316: }
317: closedir(dirp);
318:
319: if (!seenany) {
320: if (blast != 0) /* never lower the upper bound! */
321: lastmsg = blast;
322: firstmsg = lastmsg + 1;
323: }
324: else if (blast > lastmsg)
325: lastmsg = blast;
326:
327: if (!send_msg) {
328: bounds = fopen(fname, "w");
329: if (bounds == NULL) {
330: perror(fname);
331: exit(errno);
332: }
333: chmod(fname, CMODE);
334: fprintf(bounds, "%d %d\n", firstmsg, lastmsg);
335: fclose(bounds);
336: }
337: }
338:
339: if (send_msg) {
340: /*
341: * Send mode - place msgs in _PATH_MSGS
342: */
343: bounds = fopen(fname, "w");
344: if (bounds == NULL) {
345: perror(fname);
346: exit(errno);
347: }
348:
349: nextmsg = lastmsg + 1;
1.5 millert 350: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, nextmsg);
1.1 deraadt 351: newmsg = fopen(fname, "w");
352: if (newmsg == NULL) {
353: perror(fname);
354: exit(errno);
355: }
356: chmod(fname, 0644);
357:
358: fprintf(bounds, "%d %d\n", firstmsg, nextmsg);
359: fclose(bounds);
360:
361: sending = YES;
362: if (ruptible)
363: signal(SIGINT, onintr);
364:
365: if (isatty(fileno(stdin))) {
366: ptr = getpwuid(uid)->pw_name;
367: printf("Message %d:\nFrom %s %sSubject: ",
368: nextmsg, ptr, ctime(&t));
369: fflush(stdout);
370: fgets(inbuf, sizeof inbuf, stdin);
371: putchar('\n');
372: fflush(stdout);
373: fprintf(newmsg, "From %s %sSubject: %s\n",
374: ptr, ctime(&t), inbuf);
375: blankline = seensubj = YES;
376: }
377: else
378: blankline = seensubj = NO;
379: for (;;) {
380: fgets(inbuf, sizeof inbuf, stdin);
381: if (feof(stdin) || ferror(stdin))
382: break;
383: blankline = (blankline || (inbuf[0] == '\n'));
384: seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0)));
385: fputs(inbuf, newmsg);
386: }
387: #ifdef OBJECT
388: if (!seensubj) {
389: printf("NOTICE: Messages should have a Subject field!\n");
390: #ifdef REJECT
391: unlink(fname);
392: #endif
393: exit(1);
394: }
395: #endif
396: exit(ferror(stdin));
397: }
398: if (clean)
399: exit(0);
400:
401: /*
402: * prepare to display messages
403: */
404: totty = (isatty(fileno(stdout)) != 0);
405: use_pager = use_pager && totty;
406:
1.5 millert 407: snprintf(fname, sizeof(fname), "%s/%s", getenv("HOME"), 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",
415: firstmsg, lastmsg);
416: truncate(fname, (off_t)0);
417: newrc = YES;
418: }
419: else if (!rcfirst)
420: rcfirst = nextmsg - rcback;
421: }
1.11 ! deraadt 422: else
! 423: newrc = YES;
! 424: msgsrc = fopen(fname, "r+");
! 425: if (msgsrc == NULL)
! 426: msgsrc = fopen(fname, "w");
1.1 deraadt 427: if (msgsrc == NULL) {
428: perror(fname);
429: exit(errno);
430: }
431: if (rcfirst) {
432: if (rcfirst > lastmsg+1) {
433: printf("Warning: the last message is number %d.\n",
434: lastmsg);
435: rcfirst = nextmsg;
436: }
437: if (rcfirst > firstmsg)
438: firstmsg = rcfirst; /* don't set below first msg */
439: }
440: if (newrc) {
441: nextmsg = firstmsg;
442: fseek(msgsrc, 0L, 0);
443: fprintf(msgsrc, "%d\n", nextmsg);
444: fflush(msgsrc);
445: }
446:
447: if (totty) {
448: struct winsize win;
449: if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1)
450: Lpp = win.ws_row;
451: if (Lpp <= 0) {
1.10 downsj 452: char *ttype = getenv("TERM");
453:
454: if (ttype != (char *)NULL) {
455: if (tgetent(NULL, ttype) <= 0
456: || (Lpp = tgetnum("li")) <= 0) {
457: Lpp = NLINES;
458: }
459: } else
1.1 deraadt 460: Lpp = NLINES;
461: }
462: }
463: Lpp -= 6; /* for headers, etc. */
464:
465: already = NO;
466: prevmsg = firstmsg;
467: printing = YES;
468: if (ruptible)
469: signal(SIGINT, onintr);
470:
471: /*
472: * Main program loop
473: */
474: for (msg = firstmsg; msg <= lastmsg; msg++) {
475:
1.5 millert 476: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, msg);
1.1 deraadt 477: newmsg = fopen(fname, "r");
478: if (newmsg == NULL)
479: continue;
480:
481: gfrsub(newmsg); /* get From and Subject fields */
482: if (locomode && !local) {
483: fclose(newmsg);
484: continue;
485: }
486:
487: if (qopt) { /* This has to be located here */
488: printf("There are new messages.\n");
489: exit(0);
490: }
491:
492: if (already && !hdrs)
493: putchar('\n');
494:
495: /*
496: * Print header
497: */
498: if (totty)
499: signal(SIGTSTP, onsusp);
500: (void) setjmp(tstpbuf);
501: already = YES;
502: nlines = 2;
503: if (seenfrom) {
504: printf("Message %d:\nFrom %s %s", msg, from, date);
505: nlines++;
506: }
507: if (seensubj) {
508: printf("Subject: %s", subj);
509: nlines++;
510: }
511: else {
512: if (seenfrom) {
513: putchar('\n');
514: nlines++;
515: }
516: while (nlines < 6
517: && fgets(inbuf, sizeof inbuf, newmsg)
518: && inbuf[0] != '\n') {
519: fputs(inbuf, stdout);
520: nlines++;
521: }
522: }
523:
524: lct = linecnt(newmsg);
525: if (lct)
526: printf("(%d%slines) ", lct, seensubj? " " : " more ");
527:
528: if (hdrs) {
529: printf("\n-----\n");
530: fclose(newmsg);
531: continue;
532: }
533:
534: /*
535: * Ask user for command
536: */
537: if (totty)
538: ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT));
539: else
540: inbuf[0] = 'y';
541: if (totty)
542: signal(SIGTSTP, SIG_DFL);
543: cmnd:
544: in = inbuf;
545: switch (*in) {
546: case 'x':
547: case 'X':
548: exit(0);
549:
550: case 'q':
551: case 'Q':
552: quitit = YES;
553: printf("--Postponed--\n");
554: exit(0);
555: /* intentional fall-thru */
556: case 'n':
557: case 'N':
558: if (msg >= nextmsg) sep = "Flushed";
559: prevmsg = msg;
560: break;
561:
562: case 'p':
563: case 'P':
564: use_pager = (*in++ == 'p');
565: /* intentional fallthru */
566: case '\n':
567: case 'y':
568: default:
569: if (*in == '-') {
570: msg = prevmsg-1;
571: sep = "replay";
572: break;
573: }
574: if (isdigit(*in)) {
575: msg = next(in);
576: sep = in;
577: break;
578: }
579:
580: prmesg(nlines + lct + (seensubj? 1 : 0));
581: prevmsg = msg;
582:
583: }
584:
585: printf("--%s--\n", sep);
586: sep = "-";
587: if (msg >= nextmsg) {
588: nextmsg = msg + 1;
589: fseek(msgsrc, 0L, 0);
590: fprintf(msgsrc, "%d\n", nextmsg);
591: fflush(msgsrc);
592: }
593: if (newmsg)
594: fclose(newmsg);
595: if (quitit)
596: break;
597: }
598:
599: /*
600: * Make sure .rc file gets updated
601: */
602: if (--msg >= nextmsg) {
603: nextmsg = msg + 1;
604: fseek(msgsrc, 0L, 0);
605: fprintf(msgsrc, "%d\n", nextmsg);
606: fflush(msgsrc);
607: }
608: if (already && !quitit && lastcmd && totty) {
609: /*
610: * save or reply to last message?
611: */
612: msg = prevmsg;
613: ask(NOMORE);
614: if (inbuf[0] == '-' || isdigit(inbuf[0]))
615: goto cmnd;
616: }
617: if (!(already || hush || qopt))
618: printf("No new messages.\n");
619: exit(0);
620: }
621:
1.9 downsj 622: void
1.1 deraadt 623: prmesg(length)
624: int length;
625: {
626: FILE *outf;
627: char *env_pager;
628:
629: if (use_pager && length > Lpp) {
630: signal(SIGPIPE, SIG_IGN);
631: signal(SIGQUIT, SIG_IGN);
1.11 ! deraadt 632: if ((env_pager = getenv("PAGER")) == NULL) {
! 633: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_PAGER, Lpp);
! 634: } else {
! 635: snprintf(cmdbuf, sizeof(cmdbuf), env_pager);
! 636: }
1.1 deraadt 637: outf = popen(cmdbuf, "w");
638: if (!outf)
639: outf = stdout;
640: else
641: setbuf(outf, (char *)NULL);
642: }
643: else
644: outf = stdout;
645:
646: if (seensubj)
647: putc('\n', outf);
648:
649: while (fgets(inbuf, sizeof inbuf, newmsg)) {
650: fputs(inbuf, outf);
651: if (ferror(outf)) {
652: clearerr(outf);
653: break;
654: }
655: }
656:
657: if (outf != stdout) {
658: pclose(outf);
659: signal(SIGPIPE, SIG_DFL);
660: signal(SIGQUIT, SIG_DFL);
661: }
662: else {
663: fflush(stdout);
664: }
665:
666: /* trick to force wait on output */
667: tcdrain(fileno(stdout));
668: }
669:
670: void
1.9 downsj 671: onintr(unused)
672: int unused;
1.1 deraadt 673: {
674: signal(SIGINT, onintr);
675: if (mailing)
676: unlink(fname);
677: if (sending) {
678: unlink(fname);
679: puts("--Killed--");
680: exit(1);
681: }
682: if (printing) {
683: putchar('\n');
684: if (hdrs)
685: exit(0);
686: sep = "Interrupt";
687: if (newmsg)
688: fseek(newmsg, 0L, 2);
689: intrpflg = YES;
690: }
691: }
692:
693: /*
694: * We have just gotten a susp. Suspend and prepare to resume.
695: */
696: void
1.9 downsj 697: onsusp(unused)
698: int unused;
1.1 deraadt 699: {
700: signal(SIGTSTP, SIG_DFL);
701: sigsetmask(0);
702: kill(0, SIGTSTP);
703: signal(SIGTSTP, onsusp);
704: if (!mailing)
705: longjmp(tstpbuf, 0);
706: }
707:
1.9 downsj 708: int
1.1 deraadt 709: linecnt(f)
1.9 downsj 710: FILE *f;
1.1 deraadt 711: {
712: off_t oldpos = ftell(f);
713: int l = 0;
714: char lbuf[BUFSIZ];
715:
716: while (fgets(lbuf, sizeof lbuf, f))
717: l++;
718: clearerr(f);
719: fseek(f, oldpos, 0);
720: return (l);
721: }
722:
1.9 downsj 723: int
1.1 deraadt 724: next(buf)
1.9 downsj 725: char *buf;
1.1 deraadt 726: {
727: int i;
728: sscanf(buf, "%d", &i);
729: sprintf(buf, "Goto %d", i);
730: return(--i);
731: }
732:
1.9 downsj 733: void
1.1 deraadt 734: ask(prompt)
1.9 downsj 735: char *prompt;
1.1 deraadt 736: {
737: char inch;
1.2 deraadt 738: int n, cmsg, fd;
1.1 deraadt 739: off_t oldpos;
740: FILE *cpfrom, *cpto;
741:
742: printf("%s ", prompt);
743: fflush(stdout);
744: intrpflg = NO;
745: (void) fgets(inbuf, sizeof inbuf, stdin);
746: if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n')
747: inbuf[n - 1] = '\0';
748: if (intrpflg)
749: inbuf[0] = 'x';
750:
751: /*
752: * Handle 'mail' and 'save' here.
753: */
1.11 ! deraadt 754: if (((inch = inbuf[0]) == 's' || inch == 'm') && !restricted) {
1.1 deraadt 755: if (inbuf[1] == '-')
756: cmsg = prevmsg;
757: else if (isdigit(inbuf[1]))
758: cmsg = atoi(&inbuf[1]);
759: else
760: cmsg = msg;
1.5 millert 761: snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, cmsg);
1.1 deraadt 762:
763: oldpos = ftell(newmsg);
764:
765: cpfrom = fopen(fname, "r");
766: if (!cpfrom) {
767: printf("Message %d not found\n", cmsg);
768: ask (prompt);
769: return;
770: }
771:
772: if (inch == 's') {
773: in = nxtfld(inbuf);
774: if (*in) {
775: for (n=0; in[n] > ' '; n++) { /* sizeof fname? */
776: fname[n] = in[n];
777: }
778: fname[n] = NULL;
779: }
780: else
781: strcpy(fname, "Messages");
1.7 deraadt 782: fd = open(fname, O_RDWR|O_EXCL|O_CREAT|O_APPEND);
1.1 deraadt 783: }
784: else {
1.4 deraadt 785: strcpy(fname, _PATH_TMPFILE);
1.7 deraadt 786: fd = mkstemp(fname);
787: if (fd != -1) {
788: snprintf(cmdbuf, sizeof(cmdbuf), _PATH_MAIL, fname);
789: mailing = YES;
790: }
791: }
792: if (fd == -1 || (cpto = fdopen(fd, "a")) == NULL) {
793: if (fd != -1)
1.2 deraadt 794: close(fd);
1.1 deraadt 795: perror(fname);
796: mailing = NO;
797: fseek(newmsg, oldpos, 0);
798: ask(prompt);
799: return;
800: }
801:
1.9 downsj 802: while ((n = fread(inbuf, 1, sizeof inbuf, cpfrom)))
1.1 deraadt 803: fwrite(inbuf, 1, n, cpto);
804:
805: fclose(cpfrom);
806: fclose(cpto);
807: fseek(newmsg, oldpos, 0); /* reposition current message */
808: if (inch == 's')
809: printf("Message %d saved in \"%s\"\n", cmsg, fname);
810: else {
811: system(cmdbuf);
812: unlink(fname);
813: mailing = NO;
814: }
815: ask(prompt);
816: }
817: }
818:
1.9 downsj 819: void
1.1 deraadt 820: gfrsub(infile)
1.9 downsj 821: FILE *infile;
1.1 deraadt 822: {
823: off_t frompos;
824:
825: seensubj = seenfrom = NO;
826: local = YES;
827: subj[0] = from[0] = date[0] = NULL;
828:
829: /*
830: * Is this a normal message?
831: */
832: if (fgets(inbuf, sizeof inbuf, infile)) {
833: if (strncmp(inbuf, "From", 4)==0) {
834: /*
835: * expected form starts with From
836: */
837: seenfrom = YES;
838: frompos = ftell(infile);
839: ptr = from;
840: in = nxtfld(inbuf);
1.8 deraadt 841: if (*in) {
842: while (*in && *in > ' ' &&
843: ptr - from < sizeof from -1) {
844: if (*in == ':' || *in == '@' || *in == '!')
845: local = NO;
846: *ptr++ = *in++;
847: }
1.1 deraadt 848: }
849: *ptr = NULL;
850: if (*(in = nxtfld(in)))
851: strncpy(date, in, sizeof date);
852: else {
853: date[0] = '\n';
854: date[1] = NULL;
855: }
856: }
857: else {
858: /*
859: * not the expected form
860: */
861: fseek(infile, 0L, 0);
862: return;
863: }
864: }
865: else
866: /*
867: * empty file ?
868: */
869: return;
870:
871: /*
872: * look for Subject line until EOF or a blank line
873: */
874: while (fgets(inbuf, sizeof inbuf, infile)
875: && !(blankline = (inbuf[0] == '\n'))) {
876: /*
877: * extract Subject line
878: */
879: if (!seensubj && strncmp(inbuf, "Subj", 4)==0) {
880: seensubj = YES;
881: frompos = ftell(infile);
882: strncpy(subj, nxtfld(inbuf), sizeof subj);
883: }
884: }
885: if (!blankline)
886: /*
887: * ran into EOF
888: */
889: fseek(infile, frompos, 0);
890:
891: if (!seensubj)
892: /*
893: * for possible use with Mail
894: */
895: strncpy(subj, "(No Subject)\n", sizeof subj);
896: }
897:
898: char *
899: nxtfld(s)
1.9 downsj 900: char *s;
1.1 deraadt 901: {
902: if (*s) while (*s && *s > ' ') s++; /* skip over this field */
903: if (*s) while (*s && *s <= ' ') s++; /* find start of next field */
904: return (s);
905: }