Annotation of src/usr.bin/mail/quit.c, Revision 1.4
1.4 ! millert 1: /* $OpenBSD: quit.c,v 1.3 1997/03/29 03:01:47 millert Exp $ */
! 2: /* $NetBSD: quit.c,v 1.6 1996/12/28 07:11:07 tls Exp $ */
1.2 deraadt 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.
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
1.2 deraadt 38: #if 0
1.4 ! millert 39: static char sccsid[] = "@(#)quit.c 8.2 (Berkeley) 4/28/95";
1.2 deraadt 40: #else
1.4 ! millert 41: static char rcsid[] = "$OpenBSD: quit.c,v 1.3 1997/03/29 03:01:47 millert Exp $";
1.2 deraadt 42: #endif
1.1 deraadt 43: #endif /* not lint */
44:
45: #include "rcv.h"
46: #include <fcntl.h>
47: #include "extern.h"
48:
49: /*
50: * Rcv -- receive mail rationally.
51: *
52: * Termination processing.
53: */
54:
55: /*
56: * The "quit" command.
57: */
58: int
1.2 deraadt 59: quitcmd(v)
60: void *v;
1.1 deraadt 61: {
62: /*
63: * If we are sourcing, then return 1 so execute() can handle it.
64: * Otherwise, return -1 to abort command loop.
65: */
66: if (sourcing)
1.4 ! millert 67: return(1);
! 68: return(-1);
1.1 deraadt 69: }
70:
71: /*
72: * Save all of the undetermined messages at the top of "mbox"
73: * Save all untouched messages back in the system mailbox.
74: * Remove the system mailbox, if none saved there.
75: */
76: void
77: quit()
78: {
79: int mcount, p, modify, autohold, anystat, holdbit, nohold;
1.2 deraadt 80: FILE *ibuf = NULL, *obuf, *fbuf, *rbuf, *readstat = NULL, *abuf;
1.1 deraadt 81: register struct message *mp;
82: register int c;
83: extern char *tempQuit, *tempResid;
84: struct stat minfo;
85: char *mbox;
86:
87: /*
88: * If we are read only, we can't do anything,
89: * so just return quickly.
90: */
91: if (readonly)
92: return;
93: /*
94: * If editing (not reading system mail box), then do the work
95: * in edstop()
96: */
97: if (edit) {
98: edstop();
99: return;
100: }
101:
102: /*
103: * See if there any messages to save in mbox. If no, we
104: * can save copying mbox to /tmp and back.
105: *
106: * Check also to see if any files need to be preserved.
107: * Delete all untouched messages to keep them out of mbox.
108: * If all the messages are to be preserved, just exit with
109: * a message.
110: */
111:
112: fbuf = Fopen(mailname, "r");
113: if (fbuf == NULL)
114: goto newmail;
1.2 deraadt 115: if (flock(fileno(fbuf), LOCK_EX) == -1) {
1.4 ! millert 116: warn("Unable to lock mailbox");
! 117: (void)Fclose(fbuf);
1.2 deraadt 118: return;
119: }
1.3 millert 120: if (!spool_lock()) {
1.4 ! millert 121: (void)Fclose(fbuf);
1.3 millert 122: return; /* mail.local printed error for us */
123: }
1.1 deraadt 124: rbuf = NULL;
125: if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) {
1.4 ! millert 126: puts("New mail has arrived.");
1.1 deraadt 127: rbuf = Fopen(tempResid, "w");
128: if (rbuf == NULL || fbuf == NULL)
129: goto newmail;
130: #ifdef APPEND
131: fseek(fbuf, (long)mailsize, 0);
132: while ((c = getc(fbuf)) != EOF)
133: (void) putc(c, rbuf);
134: #else
135: p = minfo.st_size - mailsize;
136: while (p-- > 0) {
137: c = getc(fbuf);
138: if (c == EOF)
139: goto newmail;
140: (void) putc(c, rbuf);
141: }
142: #endif
1.4 ! millert 143: (void)Fclose(rbuf);
1.1 deraadt 144: if ((rbuf = Fopen(tempResid, "r")) == NULL)
145: goto newmail;
146: rm(tempResid);
147: }
148:
149: /*
150: * Adjust the message flags in each message.
151: */
152:
153: anystat = 0;
154: autohold = value("hold") != NOSTR;
155: holdbit = autohold ? MPRESERVE : MBOX;
156: nohold = MBOX|MSAVED|MDELETED|MPRESERVE;
157: if (value("keepsave") != NOSTR)
158: nohold &= ~MSAVED;
159: for (mp = &message[0]; mp < &message[msgCount]; mp++) {
160: if (mp->m_flag & MNEW) {
161: mp->m_flag &= ~MNEW;
162: mp->m_flag |= MSTATUS;
163: }
164: if (mp->m_flag & MSTATUS)
165: anystat++;
166: if ((mp->m_flag & MTOUCH) == 0)
167: mp->m_flag |= MPRESERVE;
168: if ((mp->m_flag & nohold) == 0)
169: mp->m_flag |= holdbit;
170: }
171: modify = 0;
172: if (Tflag != NOSTR) {
173: if ((readstat = Fopen(Tflag, "w")) == NULL)
174: Tflag = NOSTR;
175: }
176: for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
177: if (mp->m_flag & MBOX)
178: c++;
179: if (mp->m_flag & MPRESERVE)
180: p++;
181: if (mp->m_flag & MODIFY)
182: modify++;
183: if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) {
184: char *id;
185:
186: if ((id = hfield("article-id", mp)) != NOSTR)
187: fprintf(readstat, "%s\n", id);
188: }
189: }
190: if (Tflag != NOSTR)
1.4 ! millert 191: (void)Fclose(readstat);
1.1 deraadt 192: if (p == msgCount && !modify && !anystat) {
193: printf("Held %d message%s in %s\n",
194: p, p == 1 ? "" : "s", mailname);
1.4 ! millert 195: (void)Fclose(fbuf);
1.3 millert 196: spool_unlock();
1.1 deraadt 197: return;
198: }
199: if (c == 0) {
200: if (p != 0) {
201: writeback(rbuf);
1.4 ! millert 202: (void)Fclose(fbuf);
1.3 millert 203: spool_unlock();
1.1 deraadt 204: return;
205: }
206: goto cream;
207: }
208:
209: /*
210: * Create another temporary file and copy user's mbox file
211: * darin. If there is no mbox, copy nothing.
212: * If he has specified "append" don't copy his mailbox,
213: * just copy saveable entries at the end.
214: */
215:
216: mbox = expand("&");
217: mcount = c;
218: if (value("append") == NOSTR) {
219: if ((obuf = Fopen(tempQuit, "w")) == NULL) {
1.4 ! millert 220: warn(tempQuit);
! 221: (void)Fclose(fbuf);
1.3 millert 222: spool_unlock();
1.1 deraadt 223: return;
224: }
225: if ((ibuf = Fopen(tempQuit, "r")) == NULL) {
1.4 ! millert 226: warn(tempQuit);
1.1 deraadt 227: rm(tempQuit);
1.4 ! millert 228: (void)Fclose(obuf);
! 229: (void)Fclose(fbuf);
1.3 millert 230: spool_unlock();
1.1 deraadt 231: return;
232: }
233: rm(tempQuit);
234: if ((abuf = Fopen(mbox, "r")) != NULL) {
235: while ((c = getc(abuf)) != EOF)
236: (void) putc(c, obuf);
1.4 ! millert 237: (void)Fclose(abuf);
1.1 deraadt 238: }
239: if (ferror(obuf)) {
1.4 ! millert 240: warn(tempQuit);
! 241: (void)Fclose(ibuf);
! 242: (void)Fclose(obuf);
! 243: (void)Fclose(fbuf);
1.3 millert 244: spool_unlock();
1.1 deraadt 245: return;
246: }
1.4 ! millert 247: (void)Fclose(obuf);
! 248: (void)close(creat(mbox, 0600));
1.1 deraadt 249: if ((obuf = Fopen(mbox, "r+")) == NULL) {
1.4 ! millert 250: warn(mbox);
! 251: (void)Fclose(ibuf);
! 252: (void)Fclose(fbuf);
1.3 millert 253: spool_unlock();
1.1 deraadt 254: return;
255: }
256: }
1.2 deraadt 257: else {
1.1 deraadt 258: if ((obuf = Fopen(mbox, "a")) == NULL) {
1.4 ! millert 259: warn(mbox);
! 260: (void)Fclose(fbuf);
1.3 millert 261: spool_unlock();
1.1 deraadt 262: return;
263: }
264: fchmod(fileno(obuf), 0600);
265: }
266: for (mp = &message[0]; mp < &message[msgCount]; mp++)
267: if (mp->m_flag & MBOX)
268: if (send(mp, obuf, saveignore, NOSTR) < 0) {
1.4 ! millert 269: warn(mbox);
! 270: (void)Fclose(ibuf);
! 271: (void)Fclose(obuf);
! 272: (void)Fclose(fbuf);
1.3 millert 273: spool_unlock();
1.1 deraadt 274: return;
275: }
276:
277: /*
278: * Copy the user's old mbox contents back
279: * to the end of the stuff we just saved.
280: * If we are appending, this is unnecessary.
281: */
282:
283: if (value("append") == NOSTR) {
284: rewind(ibuf);
285: c = getc(ibuf);
286: while (c != EOF) {
287: (void) putc(c, obuf);
288: if (ferror(obuf))
289: break;
290: c = getc(ibuf);
291: }
1.4 ! millert 292: (void)Fclose(ibuf);
1.1 deraadt 293: fflush(obuf);
294: }
295: trunc(obuf);
296: if (ferror(obuf)) {
1.4 ! millert 297: warn(mbox);
! 298: (void)Fclose(obuf);
! 299: (void)Fclose(fbuf);
1.3 millert 300: spool_unlock();
1.1 deraadt 301: return;
302: }
1.4 ! millert 303: (void)Fclose(obuf);
1.1 deraadt 304: if (mcount == 1)
1.4 ! millert 305: puts("Saved 1 message in mbox");
1.1 deraadt 306: else
307: printf("Saved %d messages in mbox\n", mcount);
308:
309: /*
310: * Now we are ready to copy back preserved files to
311: * the system mailbox, if any were requested.
312: */
313:
314: if (p != 0) {
315: writeback(rbuf);
1.4 ! millert 316: (void)Fclose(fbuf);
1.3 millert 317: spool_unlock();
1.1 deraadt 318: return;
319: }
320:
321: /*
322: * Finally, remove his /usr/mail file.
323: * If new mail has arrived, copy it back.
324: */
325:
326: cream:
327: if (rbuf != NULL) {
328: abuf = Fopen(mailname, "r+");
329: if (abuf == NULL)
330: goto newmail;
331: while ((c = getc(rbuf)) != EOF)
332: (void) putc(c, abuf);
1.4 ! millert 333: (void)Fclose(rbuf);
1.1 deraadt 334: trunc(abuf);
1.4 ! millert 335: (void)Fclose(abuf);
1.1 deraadt 336: alter(mailname);
1.4 ! millert 337: (void)Fclose(fbuf);
1.3 millert 338: spool_unlock();
1.1 deraadt 339: return;
340: }
341: demail();
1.4 ! millert 342: (void)Fclose(fbuf);
1.3 millert 343: spool_unlock();
1.1 deraadt 344: return;
345:
346: newmail:
1.4 ! millert 347: puts("Thou hast new mail.");
1.2 deraadt 348: if (fbuf != NULL) {
1.4 ! millert 349: (void)Fclose(fbuf);
1.3 millert 350: spool_unlock();
1.2 deraadt 351: }
1.1 deraadt 352: }
353:
354: /*
355: * Preserve all the appropriate messages back in the system
356: * mailbox, and print a nice message indicated how many were
357: * saved. On any error, just return -1. Else return 0.
358: * Incorporate the any new mail that we found.
359: */
360: int
361: writeback(res)
362: register FILE *res;
363: {
364: register struct message *mp;
365: register int p, c;
366: FILE *obuf;
367:
368: p = 0;
369: if ((obuf = Fopen(mailname, "r+")) == NULL) {
1.4 ! millert 370: warn(mailname);
1.1 deraadt 371: return(-1);
372: }
373: #ifndef APPEND
374: if (res != NULL)
375: while ((c = getc(res)) != EOF)
376: (void) putc(c, obuf);
377: #endif
378: for (mp = &message[0]; mp < &message[msgCount]; mp++)
379: if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) {
380: p++;
381: if (send(mp, obuf, (struct ignoretab *)0, NOSTR) < 0) {
1.4 ! millert 382: warn(mailname);
! 383: (void)Fclose(obuf);
1.1 deraadt 384: return(-1);
385: }
386: }
387: #ifdef APPEND
388: if (res != NULL)
389: while ((c = getc(res)) != EOF)
390: (void) putc(c, obuf);
391: #endif
392: fflush(obuf);
393: trunc(obuf);
394: if (ferror(obuf)) {
1.4 ! millert 395: warn(mailname);
! 396: (void)Fclose(obuf);
1.1 deraadt 397: return(-1);
398: }
399: if (res != NULL)
1.4 ! millert 400: (void)Fclose(res);
! 401: (void)Fclose(obuf);
1.1 deraadt 402: alter(mailname);
403: if (p == 1)
404: printf("Held 1 message in %s\n", mailname);
405: else
406: printf("Held %d messages in %s\n", p, mailname);
407: return(0);
408: }
409:
410: /*
411: * Terminate an editing session by attempting to write out the user's
412: * file from the temporary. Save any new stuff appended to the file.
413: */
414: void
415: edstop()
416: {
417: extern char *tmpdir;
418: register int gotcha, c;
419: register struct message *mp;
1.2 deraadt 420: FILE *obuf, *ibuf, *readstat = NULL;
1.1 deraadt 421: struct stat statb;
1.3 millert 422: char tempname[MAXPATHLEN];
1.1 deraadt 423:
424: if (readonly)
425: return;
426: holdsigs();
427: if (Tflag != NOSTR) {
428: if ((readstat = Fopen(Tflag, "w")) == NULL)
429: Tflag = NOSTR;
430: }
431: for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) {
432: if (mp->m_flag & MNEW) {
433: mp->m_flag &= ~MNEW;
434: mp->m_flag |= MSTATUS;
435: }
436: if (mp->m_flag & (MODIFY|MDELETED|MSTATUS))
437: gotcha++;
438: if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) {
439: char *id;
440:
441: if ((id = hfield("article-id", mp)) != NOSTR)
442: fprintf(readstat, "%s\n", id);
443: }
444: }
445: if (Tflag != NOSTR)
1.4 ! millert 446: (void)Fclose(readstat);
1.1 deraadt 447: if (!gotcha || Tflag != NOSTR)
448: goto done;
449: ibuf = NULL;
450: if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) {
1.3 millert 451: int fd;
1.1 deraadt 452:
1.3 millert 453: snprintf(tempname, sizeof(tempname), "%s/%s", tmpdir,
454: "mboxXXXXXXXXXX");
455: if ((fd = mkstemp(tempname)) == -1 ||
456: (obuf = Fdopen(fd, "w")) == NULL) {
1.4 ! millert 457: warn(tempname);
1.1 deraadt 458: relsesigs();
459: reset(0);
460: }
461: if ((ibuf = Fopen(mailname, "r")) == NULL) {
1.4 ! millert 462: warn(mailname);
! 463: (void)Fclose(obuf);
1.1 deraadt 464: rm(tempname);
465: relsesigs();
466: reset(0);
467: }
468: fseek(ibuf, (long)mailsize, 0);
469: while ((c = getc(ibuf)) != EOF)
470: (void) putc(c, obuf);
1.4 ! millert 471: (void)Fclose(ibuf);
! 472: (void)Fclose(obuf);
1.1 deraadt 473: if ((ibuf = Fopen(tempname, "r")) == NULL) {
1.4 ! millert 474: warn(tempname);
1.1 deraadt 475: rm(tempname);
476: relsesigs();
477: reset(0);
478: }
479: rm(tempname);
480: }
481: printf("\"%s\" ", mailname);
482: fflush(stdout);
483: if ((obuf = Fopen(mailname, "r+")) == NULL) {
1.4 ! millert 484: warn(mailname);
1.1 deraadt 485: relsesigs();
486: reset(0);
487: }
488: trunc(obuf);
489: c = 0;
490: for (mp = &message[0]; mp < &message[msgCount]; mp++) {
491: if ((mp->m_flag & MDELETED) != 0)
492: continue;
493: c++;
494: if (send(mp, obuf, (struct ignoretab *) NULL, NOSTR) < 0) {
1.4 ! millert 495: warn(mailname);
1.1 deraadt 496: relsesigs();
497: reset(0);
498: }
499: }
500: gotcha = (c == 0 && ibuf == NULL);
501: if (ibuf != NULL) {
502: while ((c = getc(ibuf)) != EOF)
503: (void) putc(c, obuf);
1.4 ! millert 504: (void)Fclose(ibuf);
1.1 deraadt 505: }
506: fflush(obuf);
507: if (ferror(obuf)) {
1.4 ! millert 508: warn(mailname);
1.1 deraadt 509: relsesigs();
510: reset(0);
511: }
1.4 ! millert 512: (void)Fclose(obuf);
1.1 deraadt 513: if (gotcha) {
514: rm(mailname);
1.4 ! millert 515: puts("removed");
1.1 deraadt 516: } else
1.4 ! millert 517: puts("complete");
1.1 deraadt 518: fflush(stdout);
519:
520: done:
521: relsesigs();
522: }
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