580 lines
13 KiB
C
580 lines
13 KiB
C
/* $NetBSD: quit.c,v 1.29 2017/11/09 20:27:50 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. 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 1.29 2017/11/09 20:27:50 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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#include "thread.h"
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#include "sig.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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/*
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* The "quit" command.
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*/
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/*ARGSUSED*/
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PUBLIC int
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quitcmd(void *v __unused)
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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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* 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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static int
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writeback(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, "ref+")) == NULL) {
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warn("%s", 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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warn("%s", mailname);
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(void)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 = get_message(1); mp; mp = next_message(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, NULL, NULL, NULL) < 0) {
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warn("%s", mailname);
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(void)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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(void)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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warn("%s", mailname);
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(void)Fclose(obuf);
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return -1;
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}
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if (res != NULL)
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(void)Fclose(res);
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(void)Fclose(obuf);
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alter(mailname);
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if (p == 1)
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(void)printf("Held 1 message in %s\n", mailname);
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else
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(void)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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static void
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edstop(jmp_buf jmpbuf)
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{
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int gotcha, c;
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struct message *mp;
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FILE *obuf;
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FILE *ibuf;
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FILE *readstat;
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struct stat statb;
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char tempname[PATHSIZE];
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int fd;
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sig_check();
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if (readonly)
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return;
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readstat = NULL;
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if (Tflag != NULL) {
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if ((readstat = Fopen(Tflag, "wef")) == NULL)
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Tflag = NULL;
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}
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for (mp = get_message(1), gotcha = 0; mp; mp = next_message(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 & (MMODIFY|MDELETED|MSTATUS))
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gotcha++;
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if (Tflag != NULL && (mp->m_flag & (MREAD|MDELETED)) != 0) {
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char *id;
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if ((id = hfield("article-id", mp)) != NULL)
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(void)fprintf(readstat, "%s\n", id);
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}
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}
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if (Tflag != NULL)
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(void)Fclose(readstat);
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if (!gotcha || Tflag != NULL)
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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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(void)snprintf(tempname, sizeof(tempname),
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"%s/mbox.XXXXXXXXXX", tmpdir);
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if ((fd = mkstemp(tempname)) == -1 ||
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(obuf = Fdopen(fd, "wef")) == NULL) {
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warn("%s", tempname);
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if (fd != -1)
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(void)close(fd);
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sig_release();
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longjmp(jmpbuf, -11);
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}
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if ((ibuf = Fopen(mailname, "ref")) == NULL) {
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warn("%s", mailname);
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(void)Fclose(obuf);
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(void)rm(tempname);
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sig_release();
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longjmp(jmpbuf, -1);
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}
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(void)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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warn("%s", tempname);
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(void)Fclose(obuf);
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(void)Fclose(ibuf);
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(void)rm(tempname);
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sig_release();
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longjmp(jmpbuf, -1);
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}
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(void)Fclose(ibuf);
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(void)Fclose(obuf);
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if ((ibuf = Fopen(tempname, "ref")) == NULL) {
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warn("%s", tempname);
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(void)rm(tempname);
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sig_release();
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longjmp(jmpbuf, -1);
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}
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(void)rm(tempname);
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}
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(void)printf("\"%s\" ", mailname);
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(void)fflush(stdout);
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if ((obuf = Fopen(mailname, "ref+")) == NULL) {
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warn("%s", mailname);
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sig_release();
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longjmp(jmpbuf, -1);
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}
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trunc(obuf);
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c = 0;
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for (mp = get_message(1); mp; mp = next_message(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, NULL, NULL, NULL) < 0) {
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warn("%s", mailname);
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sig_release();
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longjmp(jmpbuf, -1);
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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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(void)Fclose(ibuf);
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}
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(void)fflush(obuf);
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if (ferror(obuf)) {
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warn("%s", mailname);
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sig_release();
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longjmp(jmpbuf, -1);
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}
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(void)Fclose(obuf);
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if (gotcha) {
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(void)rm(mailname);
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(void)printf("removed\n");
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} else
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(void)printf("complete\n");
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(void)fflush(stdout);
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done:
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sig_release();
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sig_check();
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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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PUBLIC void
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quit(jmp_buf jmpbuf)
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{
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int mcount, p, modify, autohold, anystat, holdbit, nohold;
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_Bool append;
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FILE *ibuf, *obuf, *fbuf, *rbuf, *readstat, *abuf;
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struct message *mp;
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int c, fd;
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struct stat minfo;
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const char *mbox;
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char tempname[PATHSIZE];
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#ifdef __GNUC__ /* XXX gcc -Wuninitialized */
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ibuf = NULL;
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readstat = NULL;
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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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#ifdef THREAD_SUPPORT
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(void)showtagscmd(NULL); /* make sure we see tagged messages */
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(void)unthreadcmd(NULL);
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#endif
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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(jmpbuf);
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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, "ref");
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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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warn("Unable to lock mailbox");
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(void)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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(void)printf("New mail has arrived.\n");
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(void)snprintf(tempname, sizeof(tempname),
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"%s/mail.RqXXXXXXXXXX", tmpdir);
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if ((fd = mkstemp(tempname)) == -1 ||
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(rbuf = Fdopen(fd, "wef")) == NULL) {
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if (fd != -1)
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(void)close(fd);
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goto newmail;
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}
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#ifdef APPEND
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(void)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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warn("%s", tempname);
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(void)Fclose(rbuf);
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(void)Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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(void)Fclose(rbuf);
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if ((rbuf = Fopen(tempname, "ref")) == NULL)
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goto newmail;
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(void)rm(tempname);
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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(ENAME_HOLD) != NULL;
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holdbit = autohold ? MPRESERVE : MBOX;
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nohold = MBOX|MSAVED|MDELETED|MPRESERVE;
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if (value(ENAME_KEEPSAVE) != NULL)
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nohold &= ~MSAVED;
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for (mp = get_message(1); mp; mp = next_message(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 != NULL) {
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if ((readstat = Fopen(Tflag, "wef")) == NULL)
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Tflag = NULL;
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}
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for (c = 0, p = 0, mp = get_message(1); mp; mp = next_message(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 & MMODIFY)
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modify++;
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if (Tflag != NULL && (mp->m_flag & (MREAD|MDELETED)) != 0) {
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char *id;
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if ((id = hfield("article-id", mp)) != NULL)
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(void)fprintf(readstat, "%s\n", id);
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}
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}
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if (Tflag != NULL)
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(void)Fclose(readstat);
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if (p == get_msgCount() && !modify && !anystat) {
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(void)printf("Held %d message%s in %s\n",
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p, p == 1 ? "" : "s", mailname);
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(void)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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(void)writeback(rbuf);
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(void)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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append = value(ENAME_APPEND) != NULL;
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if (!append) {
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(void)snprintf(tempname, sizeof(tempname),
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"%s/mail.RmXXXXXXXXXX", tmpdir);
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if ((fd = mkstemp(tempname)) == -1 ||
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(obuf = Fdopen(fd, "wef")) == NULL) {
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warn("%s", tempname);
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if (fd != -1)
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(void)close(fd);
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(void)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(tempname, "ref")) == NULL) {
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warn("%s", tempname);
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(void)rm(tempname);
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(void)Fclose(obuf);
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(void)Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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(void)rm(tempname);
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if ((abuf = Fopen(mbox, "ref")) != NULL) {
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while ((c = getc(abuf)) != EOF)
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(void)putc(c, obuf);
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(void)Fclose(abuf);
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}
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if (ferror(obuf)) {
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warn("%s", tempname);
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(void)Fclose(ibuf);
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(void)Fclose(obuf);
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(void)Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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(void)Fclose(obuf);
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if ((fd = creat(mbox, 0600)) != -1)
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(void)close(fd);
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if ((obuf = Fopen(mbox, "ref+")) == NULL) {
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warn("%s", mbox);
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(void)Fclose(ibuf);
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(void)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, "aef")) == NULL) {
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warn("%s", mbox);
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(void)Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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(void)fchmod(fileno(obuf), 0600);
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}
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for (mp = get_message(1); mp; mp = next_message(mp))
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if (mp->m_flag & MBOX)
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if (sendmessage(mp, obuf, saveignore, NULL, NULL) < 0) {
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warn("%s", mbox);
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if (!append)
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(void)Fclose(ibuf);
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(void)Fclose(obuf);
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(void)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 (!append) {
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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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(void)Fclose(ibuf);
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}
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(void)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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warn("%s", mbox);
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(void)Fclose(obuf);
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(void)Fclose(fbuf);
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dot_unlock(mailname);
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return;
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}
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(void)Fclose(obuf);
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if (mcount == 1)
|
|
(void)printf("Saved 1 message in mbox\n");
|
|
else
|
|
(void)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) {
|
|
(void)writeback(rbuf);
|
|
(void)Fclose(fbuf);
|
|
dot_unlock(mailname);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Finally, remove his /var/mail file.
|
|
* If new mail has arrived, copy it back.
|
|
*/
|
|
|
|
cream:
|
|
if (rbuf != NULL) {
|
|
abuf = Fopen(mailname, "ref+");
|
|
if (abuf == NULL)
|
|
goto newmail;
|
|
while ((c = getc(rbuf)) != EOF)
|
|
(void)putc(c, abuf);
|
|
(void)fflush(abuf);
|
|
if (ferror(abuf)) {
|
|
warn("%s", mailname);
|
|
(void)Fclose(abuf);
|
|
(void)Fclose(fbuf);
|
|
dot_unlock(mailname);
|
|
return;
|
|
}
|
|
(void)Fclose(rbuf);
|
|
trunc(abuf);
|
|
(void)Fclose(abuf);
|
|
alter(mailname);
|
|
(void)Fclose(fbuf);
|
|
dot_unlock(mailname);
|
|
return;
|
|
}
|
|
demail();
|
|
(void)Fclose(fbuf);
|
|
dot_unlock(mailname);
|
|
return;
|
|
|
|
newmail:
|
|
(void)printf("Thou hast new mail.\n");
|
|
if (fbuf != NULL) {
|
|
(void)Fclose(fbuf);
|
|
dot_unlock(mailname);
|
|
}
|
|
}
|