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4f4122db WJ |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)quit.c 5.16 (Berkeley) 2/9/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include "rcv.h" | |
39 | #include <sys/stat.h> | |
40 | #include <sys/file.h> | |
41 | ||
42 | /* | |
43 | * Rcv -- receive mail rationally. | |
44 | * | |
45 | * Termination processing. | |
46 | */ | |
47 | ||
48 | /* | |
49 | * The "quit" command. | |
50 | */ | |
51 | quitcmd() | |
52 | { | |
53 | /* | |
54 | * If we are sourcing, then return 1 so execute() can handle it. | |
55 | * Otherwise, return -1 to abort command loop. | |
56 | */ | |
57 | if (sourcing) | |
58 | return 1; | |
59 | return -1; | |
60 | } | |
61 | ||
62 | /* | |
63 | * Save all of the undetermined messages at the top of "mbox" | |
64 | * Save all untouched messages back in the system mailbox. | |
65 | * Remove the system mailbox, if none saved there. | |
66 | */ | |
67 | ||
68 | quit() | |
69 | { | |
70 | int mcount, p, modify, autohold, anystat, holdbit, nohold; | |
71 | FILE *ibuf, *obuf, *fbuf, *rbuf, *readstat, *abuf; | |
72 | register struct message *mp; | |
73 | register int c; | |
74 | extern char tempQuit[], tempResid[]; | |
75 | struct stat minfo; | |
76 | char *mbox; | |
77 | ||
78 | /* | |
79 | * If we are read only, we can't do anything, | |
80 | * so just return quickly. | |
81 | */ | |
82 | if (readonly) | |
83 | return; | |
84 | /* | |
85 | * If editing (not reading system mail box), then do the work | |
86 | * in edstop() | |
87 | */ | |
88 | if (edit) { | |
89 | edstop(); | |
90 | return; | |
91 | } | |
92 | ||
93 | /* | |
94 | * See if there any messages to save in mbox. If no, we | |
95 | * can save copying mbox to /tmp and back. | |
96 | * | |
97 | * Check also to see if any files need to be preserved. | |
98 | * Delete all untouched messages to keep them out of mbox. | |
99 | * If all the messages are to be preserved, just exit with | |
100 | * a message. | |
101 | */ | |
102 | ||
103 | fbuf = Fopen(mailname, "r"); | |
104 | if (fbuf == NULL) | |
105 | goto newmail; | |
106 | flock(fileno(fbuf), LOCK_EX); | |
107 | rbuf = NULL; | |
108 | if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) { | |
109 | printf("New mail has arrived.\n"); | |
110 | rbuf = Fopen(tempResid, "w"); | |
111 | if (rbuf == NULL || fbuf == NULL) | |
112 | goto newmail; | |
113 | #ifdef APPEND | |
114 | fseek(fbuf, mailsize, 0); | |
115 | while ((c = getc(fbuf)) != EOF) | |
116 | (void) putc(c, rbuf); | |
117 | #else | |
118 | p = minfo.st_size - mailsize; | |
119 | while (p-- > 0) { | |
120 | c = getc(fbuf); | |
121 | if (c == EOF) | |
122 | goto newmail; | |
123 | (void) putc(c, rbuf); | |
124 | } | |
125 | #endif | |
126 | Fclose(rbuf); | |
127 | if ((rbuf = Fopen(tempResid, "r")) == NULL) | |
128 | goto newmail; | |
129 | rm(tempResid); | |
130 | } | |
131 | ||
132 | /* | |
133 | * Adjust the message flags in each message. | |
134 | */ | |
135 | ||
136 | anystat = 0; | |
137 | autohold = value("hold") != NOSTR; | |
138 | holdbit = autohold ? MPRESERVE : MBOX; | |
139 | nohold = MBOX|MSAVED|MDELETED|MPRESERVE; | |
140 | if (value("keepsave") != NOSTR) | |
141 | nohold &= ~MSAVED; | |
142 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { | |
143 | if (mp->m_flag & MNEW) { | |
144 | mp->m_flag &= ~MNEW; | |
145 | mp->m_flag |= MSTATUS; | |
146 | } | |
147 | if (mp->m_flag & MSTATUS) | |
148 | anystat++; | |
149 | if ((mp->m_flag & MTOUCH) == 0) | |
150 | mp->m_flag |= MPRESERVE; | |
151 | if ((mp->m_flag & nohold) == 0) | |
152 | mp->m_flag |= holdbit; | |
153 | } | |
154 | modify = 0; | |
155 | if (Tflag != NOSTR) { | |
156 | if ((readstat = Fopen(Tflag, "w")) == NULL) | |
157 | Tflag = NOSTR; | |
158 | } | |
159 | for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) { | |
160 | if (mp->m_flag & MBOX) | |
161 | c++; | |
162 | if (mp->m_flag & MPRESERVE) | |
163 | p++; | |
164 | if (mp->m_flag & MODIFY) | |
165 | modify++; | |
166 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { | |
167 | char *id; | |
168 | ||
169 | if ((id = hfield("article-id", mp)) != NOSTR) | |
170 | fprintf(readstat, "%s\n", id); | |
171 | } | |
172 | } | |
173 | if (Tflag != NOSTR) | |
174 | Fclose(readstat); | |
175 | if (p == msgCount && !modify && !anystat) { | |
176 | printf("Held %d message%s in %s\n", | |
177 | p, p == 1 ? "" : "s", mailname); | |
178 | Fclose(fbuf); | |
179 | return; | |
180 | } | |
181 | if (c == 0) { | |
182 | if (p != 0) { | |
183 | writeback(rbuf); | |
184 | Fclose(fbuf); | |
185 | return; | |
186 | } | |
187 | goto cream; | |
188 | } | |
189 | ||
190 | /* | |
191 | * Create another temporary file and copy user's mbox file | |
192 | * darin. If there is no mbox, copy nothing. | |
193 | * If he has specified "append" don't copy his mailbox, | |
194 | * just copy saveable entries at the end. | |
195 | */ | |
196 | ||
197 | mbox = expand("&"); | |
198 | mcount = c; | |
199 | if (value("append") == NOSTR) { | |
200 | if ((obuf = Fopen(tempQuit, "w")) == NULL) { | |
201 | perror(tempQuit); | |
202 | Fclose(fbuf); | |
203 | return; | |
204 | } | |
205 | if ((ibuf = Fopen(tempQuit, "r")) == NULL) { | |
206 | perror(tempQuit); | |
207 | rm(tempQuit); | |
208 | Fclose(obuf); | |
209 | Fclose(fbuf); | |
210 | return; | |
211 | } | |
212 | rm(tempQuit); | |
213 | if ((abuf = Fopen(mbox, "r")) != NULL) { | |
214 | while ((c = getc(abuf)) != EOF) | |
215 | (void) putc(c, obuf); | |
216 | Fclose(abuf); | |
217 | } | |
218 | if (ferror(obuf)) { | |
219 | perror(tempQuit); | |
220 | Fclose(ibuf); | |
221 | Fclose(obuf); | |
222 | Fclose(fbuf); | |
223 | return; | |
224 | } | |
225 | Fclose(obuf); | |
226 | close(creat(mbox, 0600)); | |
227 | if ((obuf = Fopen(mbox, "r+")) == NULL) { | |
228 | perror(mbox); | |
229 | Fclose(ibuf); | |
230 | Fclose(fbuf); | |
231 | return; | |
232 | } | |
233 | } | |
234 | if (value("append") != NOSTR) { | |
235 | if ((obuf = Fopen(mbox, "a")) == NULL) { | |
236 | perror(mbox); | |
237 | Fclose(fbuf); | |
238 | return; | |
239 | } | |
240 | fchmod(fileno(obuf), 0600); | |
241 | } | |
242 | for (mp = &message[0]; mp < &message[msgCount]; mp++) | |
243 | if (mp->m_flag & MBOX) | |
244 | if (send(mp, obuf, saveignore, NOSTR) < 0) { | |
245 | perror(mbox); | |
246 | Fclose(ibuf); | |
247 | Fclose(obuf); | |
248 | Fclose(fbuf); | |
249 | return; | |
250 | } | |
251 | ||
252 | /* | |
253 | * Copy the user's old mbox contents back | |
254 | * to the end of the stuff we just saved. | |
255 | * If we are appending, this is unnecessary. | |
256 | */ | |
257 | ||
258 | if (value("append") == NOSTR) { | |
259 | rewind(ibuf); | |
260 | c = getc(ibuf); | |
261 | while (c != EOF) { | |
262 | (void) putc(c, obuf); | |
263 | if (ferror(obuf)) | |
264 | break; | |
265 | c = getc(ibuf); | |
266 | } | |
267 | Fclose(ibuf); | |
268 | fflush(obuf); | |
269 | } | |
270 | trunc(obuf); | |
271 | if (ferror(obuf)) { | |
272 | perror(mbox); | |
273 | Fclose(obuf); | |
274 | Fclose(fbuf); | |
275 | return; | |
276 | } | |
277 | Fclose(obuf); | |
278 | if (mcount == 1) | |
279 | printf("Saved 1 message in mbox\n"); | |
280 | else | |
281 | printf("Saved %d messages in mbox\n", mcount); | |
282 | ||
283 | /* | |
284 | * Now we are ready to copy back preserved files to | |
285 | * the system mailbox, if any were requested. | |
286 | */ | |
287 | ||
288 | if (p != 0) { | |
289 | writeback(rbuf); | |
290 | Fclose(fbuf); | |
291 | return; | |
292 | } | |
293 | ||
294 | /* | |
295 | * Finally, remove his /usr/mail file. | |
296 | * If new mail has arrived, copy it back. | |
297 | */ | |
298 | ||
299 | cream: | |
300 | if (rbuf != NULL) { | |
301 | abuf = Fopen(mailname, "r+"); | |
302 | if (abuf == NULL) | |
303 | goto newmail; | |
304 | while ((c = getc(rbuf)) != EOF) | |
305 | (void) putc(c, abuf); | |
306 | Fclose(rbuf); | |
307 | trunc(abuf); | |
308 | Fclose(abuf); | |
309 | alter(mailname); | |
310 | Fclose(fbuf); | |
311 | return; | |
312 | } | |
313 | demail(); | |
314 | Fclose(fbuf); | |
315 | return; | |
316 | ||
317 | newmail: | |
318 | printf("Thou hast new mail.\n"); | |
319 | if (fbuf != NULL) | |
320 | Fclose(fbuf); | |
321 | } | |
322 | ||
323 | /* | |
324 | * Preserve all the appropriate messages back in the system | |
325 | * mailbox, and print a nice message indicated how many were | |
326 | * saved. On any error, just return -1. Else return 0. | |
327 | * Incorporate the any new mail that we found. | |
328 | */ | |
329 | writeback(res) | |
330 | register FILE *res; | |
331 | { | |
332 | register struct message *mp; | |
333 | register int p, c; | |
334 | FILE *obuf; | |
335 | ||
336 | p = 0; | |
337 | if ((obuf = Fopen(mailname, "r+")) == NULL) { | |
338 | perror(mailname); | |
339 | return(-1); | |
340 | } | |
341 | #ifndef APPEND | |
342 | if (res != NULL) | |
343 | while ((c = getc(res)) != EOF) | |
344 | (void) putc(c, obuf); | |
345 | #endif | |
346 | for (mp = &message[0]; mp < &message[msgCount]; mp++) | |
347 | if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) { | |
348 | p++; | |
349 | if (send(mp, obuf, (struct ignoretab *)0, NOSTR) < 0) { | |
350 | perror(mailname); | |
351 | Fclose(obuf); | |
352 | return(-1); | |
353 | } | |
354 | } | |
355 | #ifdef APPEND | |
356 | if (res != NULL) | |
357 | while ((c = getc(res)) != EOF) | |
358 | (void) putc(c, obuf); | |
359 | #endif | |
360 | fflush(obuf); | |
361 | trunc(obuf); | |
362 | if (ferror(obuf)) { | |
363 | perror(mailname); | |
364 | Fclose(obuf); | |
365 | return(-1); | |
366 | } | |
367 | if (res != NULL) | |
368 | Fclose(res); | |
369 | Fclose(obuf); | |
370 | alter(mailname); | |
371 | if (p == 1) | |
372 | printf("Held 1 message in %s\n", mailname); | |
373 | else | |
374 | printf("Held %d messages in %s\n", p, mailname); | |
375 | return(0); | |
376 | } | |
377 | ||
378 | /* | |
379 | * Terminate an editing session by attempting to write out the user's | |
380 | * file from the temporary. Save any new stuff appended to the file. | |
381 | */ | |
382 | edstop() | |
383 | { | |
384 | register int gotcha, c; | |
385 | register struct message *mp; | |
386 | FILE *obuf, *ibuf, *readstat; | |
387 | struct stat statb; | |
388 | char tempname[30]; | |
389 | char *mktemp(); | |
390 | ||
391 | if (readonly) | |
392 | return; | |
393 | holdsigs(); | |
394 | if (Tflag != NOSTR) { | |
395 | if ((readstat = Fopen(Tflag, "w")) == NULL) | |
396 | Tflag = NOSTR; | |
397 | } | |
398 | for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) { | |
399 | if (mp->m_flag & MNEW) { | |
400 | mp->m_flag &= ~MNEW; | |
401 | mp->m_flag |= MSTATUS; | |
402 | } | |
403 | if (mp->m_flag & (MODIFY|MDELETED|MSTATUS)) | |
404 | gotcha++; | |
405 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { | |
406 | char *id; | |
407 | ||
408 | if ((id = hfield("article-id", mp)) != NOSTR) | |
409 | fprintf(readstat, "%s\n", id); | |
410 | } | |
411 | } | |
412 | if (Tflag != NOSTR) | |
413 | Fclose(readstat); | |
414 | if (!gotcha || Tflag != NOSTR) | |
415 | goto done; | |
416 | ibuf = NULL; | |
417 | if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) { | |
418 | strcpy(tempname, _PATH_TMP); | |
419 | strcat(tempname, "mboxXXXXXX"); | |
420 | mktemp(tempname); | |
421 | if ((obuf = Fopen(tempname, "w")) == NULL) { | |
422 | perror(tempname); | |
423 | relsesigs(); | |
424 | reset(0); | |
425 | } | |
426 | if ((ibuf = Fopen(mailname, "r")) == NULL) { | |
427 | perror(mailname); | |
428 | Fclose(obuf); | |
429 | rm(tempname); | |
430 | relsesigs(); | |
431 | reset(0); | |
432 | } | |
433 | fseek(ibuf, mailsize, 0); | |
434 | while ((c = getc(ibuf)) != EOF) | |
435 | (void) putc(c, obuf); | |
436 | Fclose(ibuf); | |
437 | Fclose(obuf); | |
438 | if ((ibuf = Fopen(tempname, "r")) == NULL) { | |
439 | perror(tempname); | |
440 | rm(tempname); | |
441 | relsesigs(); | |
442 | reset(0); | |
443 | } | |
444 | rm(tempname); | |
445 | } | |
446 | printf("\"%s\" ", mailname); | |
447 | fflush(stdout); | |
448 | if ((obuf = Fopen(mailname, "r+")) == NULL) { | |
449 | perror(mailname); | |
450 | relsesigs(); | |
451 | reset(0); | |
452 | } | |
453 | trunc(obuf); | |
454 | c = 0; | |
455 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { | |
456 | if ((mp->m_flag & MDELETED) != 0) | |
457 | continue; | |
458 | c++; | |
459 | if (send(mp, obuf, (struct ignoretab *) NULL, NOSTR) < 0) { | |
460 | perror(mailname); | |
461 | relsesigs(); | |
462 | reset(0); | |
463 | } | |
464 | } | |
465 | gotcha = (c == 0 && ibuf == NULL); | |
466 | if (ibuf != NULL) { | |
467 | while ((c = getc(ibuf)) != EOF) | |
468 | (void) putc(c, obuf); | |
469 | Fclose(ibuf); | |
470 | } | |
471 | fflush(obuf); | |
472 | if (ferror(obuf)) { | |
473 | perror(mailname); | |
474 | relsesigs(); | |
475 | reset(0); | |
476 | } | |
477 | Fclose(obuf); | |
478 | if (gotcha) { | |
479 | rm(mailname); | |
480 | printf("removed\n"); | |
481 | } else | |
482 | printf("complete\n"); | |
483 | fflush(stdout); | |
484 | ||
485 | done: | |
486 | relsesigs(); | |
487 | } |