[unix-history] / usr / src / usr.bin / mail / quit.c

#

#include "rcv.h"
#include <sys/stat.h>

/*
 * Rcv -- receive mail rationally.
 *
 * Termination processing.
 */

static char *SccsId = "@(#)quit.c	2.2 %G%";

/*
 * Save all of the undetermined messages at the top of "mbox"
 * Save all untouched messages back in the system mailbox.
 * Remove the system mailbox, if none saved there.
 */

quit()
{
	int mcount, p, modify, autohold, anystat, holdbit;
	FILE *ibuf, *obuf, *fbuf, *rbuf, *readstat;
	register struct message *mp;
	register int c;
	extern char tempQuit[], tempResid[];
	struct stat minfo;
	char *id;

	/*
	 * If we are read only, we can't do anything,
	 * so just return quickly.
	 */

	if (readonly)
		return;
	/*
	 * See if there any messages to save in mbox.  If no, we
	 * can save copying mbox to /tmp and back.
	 *
	 * Check also to see if any files need to be preserved.
	 * Delete all untouched messages to keep them out of mbox.
	 * If all the messages are to be preserved, just exit with
	 * a message.
	 *
	 * If the luser has sent mail to himself, refuse to do
	 * anything with the mailbox, unless mail locking works.
	 */

	lock(mailname);
#ifndef CANLOCK
	if (selfsent) {
		printf("You have new mail.\n");
		unlock();
		return;
	}
#endif
	rbuf = NULL;
	if (stat(mailname, &minfo) >= 0 && minfo.st_size > mailsize) {
		printf("New mail has arrived.\n");
		rbuf = fopen(tempResid, "w");
		fbuf = fopen(mailname, "r");
		if (rbuf == NULL || fbuf == NULL)
			goto newmail;
#ifdef APPEND
		fseek(fbuf, mailsize, 0);
		while ((c = getc(fbuf)) != EOF)
			putc(c, rbuf);
#else
		p = minfo.st_size - mailsize;
		while (p-- > 0) {
			c = getc(fbuf);
			if (c == EOF)
				goto newmail;
			putc(c, rbuf);
		}
#endif
		fclose(fbuf);
		fclose(rbuf);
		if ((rbuf = fopen(tempResid, "r")) == NULL)
			goto newmail;
		remove(tempResid);
	}

	/*
	 * Adjust the message flags in each message.
	 */

	anystat = 0;
	autohold = value("hold") != NOSTR;
	holdbit = autohold ? MPRESERVE : MBOX;
	for (mp = &message[0]; mp < &message[msgCount]; mp++) {
		if (mp->m_flag & MNEW) {
			mp->m_flag &= ~MNEW;
			mp->m_flag |= MSTATUS;
		}
		if (mp->m_flag & MSTATUS)
			anystat++;
		if ((mp->m_flag & MTOUCH) == 0)
			mp->m_flag |= MPRESERVE;
		if ((mp->m_flag & (MBOX|MSAVED|MDELETED|MPRESERVE)) == 0)
			mp->m_flag |= holdbit;
	}
	modify = 0;
	if (Tflag != NOSTR) {
		if ((readstat = fopen(Tflag, "w")) == NULL)
			Tflag = NOSTR;
	}
	for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
		if (mp->m_flag & MBOX)
			c++;
		if (mp->m_flag & MPRESERVE)
			p++;
		if (mp->m_flag & MODIFY)
			modify++;
		if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) {
			id = hfield("article-id", mp);
			if (id != NOSTR)
				fprintf(readstat, "%s\n", id);
		}
	}
	if (Tflag != NOSTR)
		fclose(readstat);
	if (p == msgCount && !modify && !anystat) {
		if (p == 1)
			printf("Held 1 message in %s\n", mailname);
		else
			printf("Held %2d messages in %s\n", p, mailname);
		unlock();
		return;
	}
	if (c == 0) {
		if (p != 0) {
			writeback(rbuf);
			unlock();
			return;
		}
		goto cream;
	}

	/*
	 * Create another temporary file and copy user's mbox file
	 * darin.  If there is no mbox, copy nothing.
	 * If he has specified "append" don't copy his mailbox,
	 * just copy saveable entries at the end.
	 */

	mcount = c;
	if (value("append") == NOSTR) {
		if ((obuf = fopen(tempQuit, "w")) == NULL) {
			perror(tempQuit);
			unlock();
			return;
		}
		if ((ibuf = fopen(tempQuit, "r")) == NULL) {
			perror(tempQuit);
			remove(tempQuit);
			fclose(obuf);
			unlock();
			return;
		}
		remove(tempQuit);
		if ((fbuf = fopen(mbox, "r")) != NULL) {
			while ((c = getc(fbuf)) != EOF)
				putc(c, obuf);
			fclose(fbuf);
		}
		if (ferror(obuf)) {
			perror(tempQuit);
			fclose(ibuf);
			fclose(obuf);
			unlock();
			return;
		}
		fclose(obuf);
		close(creat(mbox, 0600));
		if ((obuf = fopen(mbox, "w")) == NULL) {
			perror(mbox);
			fclose(ibuf);
			unlock();
			return;
		}
	}
	if (value("append") != NOSTR)
		if ((obuf = fopen(mbox, "a")) == NULL) {
			perror(mbox);
			unlock();
			return;
		}
	for (mp = &message[0]; mp < &message[msgCount]; mp++)
		if (mp->m_flag & MBOX)
			if (send(mp, obuf) < 0) {
				perror(mbox);
				fclose(ibuf);
				fclose(obuf);
				unlock();
				return;
			}

	/*
	 * Copy the user's old mbox contents back
	 * to the end of the stuff we just saved.
	 * If we are appending, this is unnecessary.
	 */

	if (value("append") == NOSTR) {
		rewind(ibuf);
		c = getc(ibuf);
		while (c != EOF) {
			putc(c, obuf);
			if (ferror(obuf))
				break;
			c = getc(ibuf);
		}
		fclose(ibuf);
		fflush(obuf);
	}
	if (ferror(obuf)) {
		perror(mbox);
		fclose(obuf);
		unlock();
		return;
	}
	fclose(obuf);
	if (mcount == 1)
		printf("Saved 1 message in mbox\n");
	else
		printf("Saved %d messages in mbox\n", mcount);

	/*
	 * Now we are ready to copy back preserved files to
	 * the system mailbox, if any were requested.
	 */

	if (p != 0) {
		writeback(rbuf);
		unlock();
		return;
	}

	/*
	 * Finally, remove his /usr/mail file.
	 * If new mail has arrived, copy it back.
	 */

cream:
	if (rbuf != NULL) {
		fbuf = fopen(mailname, "w");
		if (fbuf == NULL)
			goto newmail;
		while ((c = getc(rbuf)) != EOF)
			putc(c, fbuf);
		fclose(rbuf);
		fclose(fbuf);
		alter(mailname);
		unlock();
		return;
	}
	demail();
	unlock();
	return;

newmail:
	printf("Thou hast new mail.\n");
	unlock();
}

/*
 * Preserve all the appropriate messages back in the system
 * mailbox, and print a nice message indicated how many were
 * saved.  On any error, just return -1.  Else return 0.
 * Incorporate the any new mail that we found.
 */

writeback(res)
	register FILE *res;
{
	register struct message *mp;
	register int p, c;
	FILE *obuf;

	p = 0;
	if ((obuf = fopen(mailname, "w")) == NULL) {
		perror(mailname);
		return(-1);
	}
#ifndef APPEND
	if (res != NULL)
		while ((c = getc(res)) != EOF)
			putc(c, obuf);
#endif
	for (mp = &message[0]; mp < &message[msgCount]; mp++)
		if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) {
			p++;
			if (send(mp, obuf) < 0) {
				perror(mailname);
				fclose(obuf);
				return(-1);
			}
		}
#ifdef APPEND
	if (res != NULL)
		while ((c = getc(res)) != EOF)
			putc(c, obuf);
#endif
	fflush(obuf);
	if (ferror(obuf)) {
		perror(mailname);
		fclose(obuf);
		return(-1);
	}
	if (res != NULL)
		fclose(res);
	fclose(obuf);
	alter(mailname);
	if (p == 1)
		printf("Held 1 message in %s\n", mailname);
	else
		printf("Held %d messages in %s\n", p, mailname);
	return(0);
}
Commit	Line	Data
865dca9a KS	1	#
	2
	3	#include "rcv.h"
	4	#include <sys/stat.h>
	5
	6	/*
	7	* Rcv -- receive mail rationally.
	8	*
	9	* Termination processing.
	10	*/
	11
f0d15113	12	static char *SccsId = "@(#)quit.c 2.2 %G%";
865dca9a KS	13
	14	/*
	15	* Save all of the undetermined messages at the top of "mbox"
	16	* Save all untouched messages back in the system mailbox.
	17	* Remove the system mailbox, if none saved there.
	18	*/
	19
	20	quit()
	21	{
252cba79	22	int mcount, p, modify, autohold, anystat, holdbit;
f0d15113	23	FILE ibuf, obuf, fbuf, rbuf, *readstat;
865dca9a KS	24	register struct message *mp;
	25	register int c;
	26	extern char tempQuit[], tempResid[];
	27	struct stat minfo;
f0d15113	28	char *id;
865dca9a	29
3ecebc0f KS	30	/*
	31	* If we are read only, we can't do anything,
	32	* so just return quickly.
	33	*/
	34
	35	if (readonly)
	36	return;
865dca9a KS	37	/*
	38	* See if there any messages to save in mbox. If no, we
	39	* can save copying mbox to /tmp and back.
	40	*
	41	* Check also to see if any files need to be preserved.
	42	* Delete all untouched messages to keep them out of mbox.
	43	* If all the messages are to be preserved, just exit with
	44	* a message.
	45	*
	46	* If the luser has sent mail to himself, refuse to do
	47	* anything with the mailbox, unless mail locking works.
	48	*/
	49
	50	lock(mailname);
	51	#ifndef CANLOCK
	52	if (selfsent) {
	53	printf("You have new mail.\n");
	54	unlock();
	55	return;
	56	}
	57	#endif
	58	rbuf = NULL;
	59	if (stat(mailname, &minfo) >= 0 && minfo.st_size > mailsize) {
	60	printf("New mail has arrived.\n");
	61	rbuf = fopen(tempResid, "w");
	62	fbuf = fopen(mailname, "r");
	63	if (rbuf == NULL \|\| fbuf == NULL)
	64	goto newmail;
	65	#ifdef APPEND
	66	fseek(fbuf, mailsize, 0);
	67	while ((c = getc(fbuf)) != EOF)
	68	putc(c, rbuf);
	69	#else
	70	p = minfo.st_size - mailsize;
	71	while (p-- > 0) {
	72	c = getc(fbuf);
	73	if (c == EOF)
	74	goto newmail;
	75	putc(c, rbuf);
	76	}
	77	#endif
	78	fclose(fbuf);
	79	fclose(rbuf);
	80	if ((rbuf = fopen(tempResid, "r")) == NULL)
	81	goto newmail;
	82	remove(tempResid);
	83	}
63e83a9b KS	84
	85	/*
	86	* Adjust the message flags in each message.
	87	*/
	88
	89	anystat = 0;
252cba79 KS	90	autohold = value("hold") != NOSTR;
252cba79 KS	91	holdbit = autohold ? MPRESERVE : MBOX;
865dca9a	92	for (mp = &message[0]; mp < &message[msgCount]; mp++) {
63e83a9b KS	93	if (mp->m_flag & MNEW) {
	94	mp->m_flag &= ~MNEW;
	95	mp->m_flag \|= MSTATUS;
	96	}
	97	if (mp->m_flag & MSTATUS)
	98	anystat++;
865dca9a	99	if ((mp->m_flag & MTOUCH) == 0)
252cba79 KS	100	mp->m_flag \|= MPRESERVE;
	101	if ((mp->m_flag & (MBOX\|MSAVED\|MDELETED\|MPRESERVE)) == 0)
	102	mp->m_flag \|= holdbit;
865dca9a KS	103	}
865dca9a KS	104	modify = 0;
f0d15113 KS	105	if (Tflag != NOSTR) {
	106	if ((readstat = fopen(Tflag, "w")) == NULL)
	107	Tflag = NOSTR;
	108	}
865dca9a	109	for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
252cba79	110	if (mp->m_flag & MBOX)
865dca9a	111	c++;
252cba79	112	if (mp->m_flag & MPRESERVE)
865dca9a KS	113	p++;
	114	if (mp->m_flag & MODIFY)
	115	modify++;
f0d15113 KS	116	if (Tflag != NOSTR && (mp->m_flag & (MREAD\|MDELETED)) != 0) {
	117	id = hfield("article-id", mp);
	118	if (id != NOSTR)
	119	fprintf(readstat, "%s\n", id);
	120	}
865dca9a	121	}
f0d15113 KS	122	if (Tflag != NOSTR)
f0d15113 KS	123	fclose(readstat);
63e83a9b	124	if (p == msgCount && !modify && !anystat) {
865dca9a KS	125	if (p == 1)
	126	printf("Held 1 message in %s\n", mailname);
	127	else
	128	printf("Held %2d messages in %s\n", p, mailname);
	129	unlock();
	130	return;
	131	}
	132	if (c == 0) {
	133	if (p != 0) {
	134	writeback(rbuf);
	135	unlock();
	136	return;
	137	}
	138	goto cream;
	139	}
	140
	141	/*
	142	* Create another temporary file and copy user's mbox file
	143	* darin. If there is no mbox, copy nothing.
	144	* If he has specified "append" don't copy his mailbox,
	145	* just copy saveable entries at the end.
	146	*/
	147
	148	mcount = c;
	149	if (value("append") == NOSTR) {
	150	if ((obuf = fopen(tempQuit, "w")) == NULL) {
	151	perror(tempQuit);
	152	unlock();
	153	return;
	154	}
	155	if ((ibuf = fopen(tempQuit, "r")) == NULL) {
	156	perror(tempQuit);
	157	remove(tempQuit);
	158	fclose(obuf);
	159	unlock();
	160	return;
	161	}
	162	remove(tempQuit);
	163	if ((fbuf = fopen(mbox, "r")) != NULL) {
	164	while ((c = getc(fbuf)) != EOF)
	165	putc(c, obuf);
	166	fclose(fbuf);
	167	}
	168	if (ferror(obuf)) {
	169	perror(tempQuit);
	170	fclose(ibuf);
	171	fclose(obuf);
	172	unlock();
	173	return;
	174	}
	175	fclose(obuf);
	176	close(creat(mbox, 0600));
	177	if ((obuf = fopen(mbox, "w")) == NULL) {
	178	perror(mbox);
	179	fclose(ibuf);
	180	unlock();
	181	return;
	182	}
	183	}
	184	if (value("append") != NOSTR)
	185	if ((obuf = fopen(mbox, "a")) == NULL) {
	186	perror(mbox);
	187	unlock();
	188	return;
189	}
190	for (mp = &message[0]; mp < &message[msgCount]; mp++)
252cba79	191	if (mp->m_flag & MBOX)
865dca9a KS	192	if (send(mp, obuf) < 0) {
	193	perror(mbox);
	194	fclose(ibuf);
	195	fclose(obuf);
	196	unlock();
	197	return;
	198	}
	199
	200	/*
	201	* Copy the user's old mbox contents back
	202	* to the end of the stuff we just saved.
	203	* If we are appending, this is unnecessary.
	204	*/
	205
	206	if (value("append") == NOSTR) {
	207	rewind(ibuf);
	208	c = getc(ibuf);
	209	while (c != EOF) {
	210	putc(c, obuf);
	211	if (ferror(obuf))
	212	break;
	213	c = getc(ibuf);
	214	}
	215	fclose(ibuf);
	216	fflush(obuf);
	217	}
	218	if (ferror(obuf)) {
	219	perror(mbox);
	220	fclose(obuf);
	221	unlock();
	222	return;
	223	}
	224	fclose(obuf);
	225	if (mcount == 1)
	226	printf("Saved 1 message in mbox\n");
	227	else
	228	printf("Saved %d messages in mbox\n", mcount);
	229
	230	/*
	231	* Now we are ready to copy back preserved files to
	232	* the system mailbox, if any were requested.
	233	*/
	234
	235	if (p != 0) {
	236	writeback(rbuf);
	237	unlock();
	238	return;
	239	}
	240
	241	/*
	242	* Finally, remove his /usr/mail file.
	243	* If new mail has arrived, copy it back.
	244	*/
	245
	246	cream:
	247	if (rbuf != NULL) {
	248	fbuf = fopen(mailname, "w");
	249	if (fbuf == NULL)
	250	goto newmail;
	251	while ((c = getc(rbuf)) != EOF)
	252	putc(c, fbuf);
	253	fclose(rbuf);
	254	fclose(fbuf);
	255	alter(mailname);
256	unlock();
257	return;
258	}
259	demail();
260	unlock();
261	return;
262
263	newmail:
264	printf("Thou hast new mail.\n");
265	unlock();
266	}
267
268	/*
269	* Preserve all the appropriate messages back in the system
270	* mailbox, and print a nice message indicated how many were
271	* saved. On any error, just return -1. Else return 0.
272	* Incorporate the any new mail that we found.
273	*/
274
275	writeback(res)
276	register FILE *res;
277	{
278	register struct message *mp;
279	register int p, c;
280	FILE *obuf;
281
282	p = 0;
283	if ((obuf = fopen(mailname, "w")) == NULL) {
284	perror(mailname);
285	return(-1);
286	}
287	#ifndef APPEND
288	if (res != NULL)
289	while ((c = getc(res)) != EOF)
290	putc(c, obuf);
291	#endif
292	for (mp = &message[0]; mp < &message[msgCount]; mp++)
293	if ((mp->m_flag&MPRESERVE)\|\|(mp->m_flag&MTOUCH)==0) {
294	p++;
295	if (send(mp, obuf) < 0) {
296	perror(mailname);
297	fclose(obuf);
298	return(-1);
299	}
300	}
301	#ifdef APPEND
302	if (res != NULL)
303	while ((c = getc(res)) != EOF)
304	putc(c, obuf);
305	#endif
306	fflush(obuf);
307	if (ferror(obuf)) {
308	perror(mailname);
309	fclose(obuf);
310	return(-1);
311	}
312	if (res != NULL)
313	fclose(res);
314	fclose(obuf);
315	alter(mailname);
316	if (p == 1)
317	printf("Held 1 message in %s\n", mailname);
318	else
319	printf("Held %d messages in %s\n", p, mailname);
320	return(0);
321	}