558 lines
12 KiB
C
558 lines
12 KiB
C
/* $NetBSD: quit.c,v 1.12 2001/02/05 02:07:53 christos Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)quit.c 8.2 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: quit.c,v 1.12 2001/02/05 02:07:53 christos Exp $");
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#endif
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#endif /* not lint */
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#include "rcv.h"
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#include "extern.h"
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/*
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* Rcv -- receive mail rationally.
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*
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* Termination processing.
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*/
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extern char *tmpdir;
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extern char *tempQuit, *tempResid;
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/*
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* The "quit" command.
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*/
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int
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quitcmd(v)
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void *v;
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{
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/*
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* If we are sourcing, then return 1 so execute() can handle it.
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* Otherwise, return -1 to abort command loop.
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*/
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if (sourcing)
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return 1;
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return -1;
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}
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/*
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* Save all of the undetermined messages at the top of "mbox"
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* Save all untouched messages back in the system mailbox.
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* Remove the system mailbox, if none saved there.
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*/
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void
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quit()
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{
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int mcount, p, modify, autohold, anystat, holdbit, nohold;
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FILE *ibuf = NULL, *obuf, *fbuf, *rbuf, *readstat = NULL, *abuf;
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struct message *mp;
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int c;
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struct stat minfo;
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char *mbox;
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#ifdef __GNUC__
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obuf = NULL; /* XXX gcc -Wuninitialized */
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#endif
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/*
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* If we are read only, we can't do anything,
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* so just return quickly.
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*/
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if (readonly)
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return;
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/*
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* If editing (not reading system mail box), then do the work
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* in edstop()
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*/
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if (edit) {
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edstop();
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return;
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}
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/*
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* See if there any messages to save in mbox. If no, we
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* can save copying mbox to /tmp and back.
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*
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* Check also to see if any files need to be preserved.
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* Delete all untouched messages to keep them out of mbox.
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* If all the messages are to be preserved, just exit with
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* a message.
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*/
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fbuf = Fopen(mailname, "r");
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if (fbuf == NULL)
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goto newmail;
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if (flock(fileno(fbuf), LOCK_EX) == -1) {
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nolock:
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perror("Unable to lock mailbox");
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Fclose(fbuf);
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return;
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}
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if (dot_lock(mailname, 1, stdout, ".") == -1)
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goto nolock;
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rbuf = NULL;
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if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) {
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printf("New mail has arrived.\n");
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rbuf = Fopen(tempResid, "w");
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if (rbuf == NULL || fbuf == NULL)
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goto newmail;
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#ifdef APPEND
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fseek(fbuf, (long)mailsize, 0);
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while ((c = getc(fbuf)) != EOF)
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(void) putc(c, rbuf);
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#else
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p = minfo.st_size - mailsize;
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while (p-- > 0) {
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c = getc(fbuf);
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if (c == EOF)
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goto newmail;
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(void) putc(c, rbuf);
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}
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#endif
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(void) fflush(rbuf);
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if (ferror(rbuf)) {
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perror(tempResid);
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Fclose(rbuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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Fclose(rbuf);
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if ((rbuf = Fopen(tempResid, "r")) == NULL)
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goto newmail;
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rm(tempResid);
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}
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/*
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* Adjust the message flags in each message.
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*/
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anystat = 0;
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autohold = value("hold") != NOSTR;
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holdbit = autohold ? MPRESERVE : MBOX;
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nohold = MBOX|MSAVED|MDELETED|MPRESERVE;
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if (value("keepsave") != NOSTR)
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nohold &= ~MSAVED;
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for (mp = &message[0]; mp < &message[msgCount]; mp++) {
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if (mp->m_flag & MNEW) {
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mp->m_flag &= ~MNEW;
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mp->m_flag |= MSTATUS;
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}
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if (mp->m_flag & MSTATUS)
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anystat++;
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if ((mp->m_flag & MTOUCH) == 0)
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mp->m_flag |= MPRESERVE;
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if ((mp->m_flag & nohold) == 0)
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mp->m_flag |= holdbit;
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}
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modify = 0;
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if (Tflag != NOSTR) {
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if ((readstat = Fopen(Tflag, "w")) == NULL)
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Tflag = NOSTR;
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}
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for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
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if (mp->m_flag & MBOX)
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c++;
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if (mp->m_flag & MPRESERVE)
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p++;
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if (mp->m_flag & MODIFY)
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modify++;
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if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) {
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char *id;
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if ((id = hfield("article-id", mp)) != NOSTR)
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fprintf(readstat, "%s\n", id);
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}
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}
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if (Tflag != NOSTR)
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Fclose(readstat);
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if (p == msgCount && !modify && !anystat) {
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printf("Held %d message%s in %s\n",
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p, p == 1 ? "" : "s", mailname);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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if (c == 0) {
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if (p != 0) {
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writeback(rbuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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goto cream;
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}
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/*
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* Create another temporary file and copy user's mbox file
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* darin. If there is no mbox, copy nothing.
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* If he has specified "append" don't copy his mailbox,
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* just copy saveable entries at the end.
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*/
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mbox = expand("&");
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mcount = c;
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if (value("append") == NOSTR) {
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if ((obuf = Fopen(tempQuit, "w")) == NULL) {
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perror(tempQuit);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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if ((ibuf = Fopen(tempQuit, "r")) == NULL) {
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perror(tempQuit);
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rm(tempQuit);
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Fclose(obuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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rm(tempQuit);
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if ((abuf = Fopen(mbox, "r")) != NULL) {
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while ((c = getc(abuf)) != EOF)
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(void) putc(c, obuf);
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Fclose(abuf);
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}
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if (ferror(obuf)) {
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perror(tempQuit);
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Fclose(ibuf);
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Fclose(obuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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Fclose(obuf);
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close(creat(mbox, 0600));
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if ((obuf = Fopen(mbox, "r+")) == NULL) {
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perror(mbox);
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Fclose(ibuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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}
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else {
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if ((obuf = Fopen(mbox, "a")) == NULL) {
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perror(mbox);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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fchmod(fileno(obuf), 0600);
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}
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for (mp = &message[0]; mp < &message[msgCount]; mp++)
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if (mp->m_flag & MBOX)
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if (sendmessage(mp, obuf, saveignore, NOSTR) < 0) {
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perror(mbox);
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Fclose(ibuf);
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Fclose(obuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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/*
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* Copy the user's old mbox contents back
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* to the end of the stuff we just saved.
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* If we are appending, this is unnecessary.
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*/
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if (value("append") == NOSTR) {
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rewind(ibuf);
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c = getc(ibuf);
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while (c != EOF) {
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(void) putc(c, obuf);
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if (ferror(obuf))
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break;
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c = getc(ibuf);
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}
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Fclose(ibuf);
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}
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fflush(obuf);
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if (!ferror(obuf))
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trunc(obuf); /* XXX or should we truncate? */
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if (ferror(obuf)) {
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perror(mbox);
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Fclose(obuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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Fclose(obuf);
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if (mcount == 1)
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printf("Saved 1 message in mbox\n");
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else
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printf("Saved %d messages in mbox\n", mcount);
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/*
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* Now we are ready to copy back preserved files to
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* the system mailbox, if any were requested.
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*/
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if (p != 0) {
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writeback(rbuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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/*
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* Finally, remove his /usr/mail file.
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* If new mail has arrived, copy it back.
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*/
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cream:
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if (rbuf != NULL) {
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abuf = Fopen(mailname, "r+");
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if (abuf == NULL)
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goto newmail;
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while ((c = getc(rbuf)) != EOF)
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(void) putc(c, abuf);
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(void) fflush(abuf);
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if (ferror(abuf)) {
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perror(mailname);
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Fclose(abuf);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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Fclose(rbuf);
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trunc(abuf);
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Fclose(abuf);
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alter(mailname);
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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demail();
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Fclose(fbuf);
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dot_unlock(mailname);
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return;
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newmail:
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printf("Thou hast new mail.\n");
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if (fbuf != NULL) {
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Fclose(fbuf);
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dot_unlock(mailname);
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}
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}
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/*
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* Preserve all the appropriate messages back in the system
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* mailbox, and print a nice message indicated how many were
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* saved. On any error, just return -1. Else return 0.
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* Incorporate the any new mail that we found.
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*/
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int
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writeback(res)
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FILE *res;
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{
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struct message *mp;
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int p, c;
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FILE *obuf;
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p = 0;
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if ((obuf = Fopen(mailname, "r+")) == NULL) {
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perror(mailname);
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return(-1);
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}
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#ifndef APPEND
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if (res != NULL) {
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while ((c = getc(res)) != EOF)
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(void) putc(c, obuf);
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(void) fflush(obuf);
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if (ferror(obuf)) {
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perror(mailname);
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Fclose(obuf);
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return(-1);
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}
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}
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#endif
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for (mp = &message[0]; mp < &message[msgCount]; mp++)
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if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) {
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p++;
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if (sendmessage(mp, obuf, (struct ignoretab *)0, NOSTR) < 0) {
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perror(mailname);
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Fclose(obuf);
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return(-1);
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}
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}
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#ifdef APPEND
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if (res != NULL)
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while ((c = getc(res)) != EOF)
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(void) putc(c, obuf);
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#endif
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fflush(obuf);
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if (!ferror(obuf))
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trunc(obuf); /* XXX or should we truncate? */
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if (ferror(obuf)) {
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perror(mailname);
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Fclose(obuf);
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return(-1);
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}
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if (res != NULL)
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Fclose(res);
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Fclose(obuf);
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alter(mailname);
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if (p == 1)
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printf("Held 1 message in %s\n", mailname);
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else
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printf("Held %d messages in %s\n", p, mailname);
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return(0);
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}
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/*
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* Terminate an editing session by attempting to write out the user's
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* file from the temporary. Save any new stuff appended to the file.
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*/
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void
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edstop()
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{
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int gotcha, c;
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struct message *mp;
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FILE *obuf, *ibuf, *readstat = NULL;
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struct stat statb;
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char *tempname;
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if (readonly)
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return;
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holdsigs();
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if (Tflag != NOSTR) {
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if ((readstat = Fopen(Tflag, "w")) == NULL)
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Tflag = NOSTR;
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}
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for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) {
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if (mp->m_flag & MNEW) {
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mp->m_flag &= ~MNEW;
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mp->m_flag |= MSTATUS;
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}
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if (mp->m_flag & (MODIFY|MDELETED|MSTATUS))
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gotcha++;
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if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) {
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char *id;
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if ((id = hfield("article-id", mp)) != NOSTR)
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fprintf(readstat, "%s\n", id);
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}
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}
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if (Tflag != NOSTR)
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Fclose(readstat);
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if (!gotcha || Tflag != NOSTR)
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goto done;
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ibuf = NULL;
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if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) {
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tempname = tempnam(tmpdir, "mbox");
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if ((obuf = Fopen(tempname, "w")) == NULL) {
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perror(tempname);
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relsesigs();
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reset(0);
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}
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if ((ibuf = Fopen(mailname, "r")) == NULL) {
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perror(mailname);
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Fclose(obuf);
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rm(tempname);
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relsesigs();
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reset(0);
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}
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fseek(ibuf, (long)mailsize, 0);
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while ((c = getc(ibuf)) != EOF)
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(void) putc(c, obuf);
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(void) fflush(obuf);
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if (ferror(obuf)) {
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perror(tempname);
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Fclose(obuf);
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Fclose(ibuf);
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rm(tempname);
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relsesigs();
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reset(0);
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}
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Fclose(ibuf);
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Fclose(obuf);
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if ((ibuf = Fopen(tempname, "r")) == NULL) {
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perror(tempname);
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rm(tempname);
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relsesigs();
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reset(0);
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}
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rm(tempname);
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free(tempname);
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}
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printf("\"%s\" ", mailname);
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fflush(stdout);
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if ((obuf = Fopen(mailname, "r+")) == NULL) {
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perror(mailname);
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relsesigs();
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reset(0);
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}
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trunc(obuf);
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c = 0;
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for (mp = &message[0]; mp < &message[msgCount]; mp++) {
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if ((mp->m_flag & MDELETED) != 0)
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continue;
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c++;
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if (sendmessage(mp, obuf, (struct ignoretab *) NULL, NOSTR) < 0) {
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perror(mailname);
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relsesigs();
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reset(0);
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}
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}
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gotcha = (c == 0 && ibuf == NULL);
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if (ibuf != NULL) {
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while ((c = getc(ibuf)) != EOF)
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(void) putc(c, obuf);
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Fclose(ibuf);
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}
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fflush(obuf);
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if (ferror(obuf)) {
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perror(mailname);
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relsesigs();
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reset(0);
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}
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Fclose(obuf);
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if (gotcha) {
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rm(mailname);
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printf("removed\n");
|
|
} else
|
|
printf("complete\n");
|
|
fflush(stdout);
|
|
|
|
done:
|
|
relsesigs();
|
|
}
|