d030d2d2ae
plain 0 should be used. This happens to work because we #define NULL to 0, but is stylistically wrong and can cause problems for people trying to port bits of code to other environments. PR: 2752 Submitted by: Arne Henrik Juul <arnej@imf.unit.no>
531 lines
9.9 KiB
C
531 lines
9.9 KiB
C
/*
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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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#ifndef lint
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static char sccsid[] = "@(#)cmd2.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include "rcv.h"
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#include <sys/wait.h>
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#include "extern.h"
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/*
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* Mail -- a mail program
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*
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* More user commands.
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*/
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/*
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* If any arguments were given, go to the next applicable argument
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* following dot, otherwise, go to the next applicable message.
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* If given as first command with no arguments, print first message.
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*/
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int
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next(msgvec)
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int *msgvec;
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{
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register struct message *mp;
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register int *ip, *ip2;
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int list[2], mdot;
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if (*msgvec != 0) {
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/*
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* If some messages were supplied, find the
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* first applicable one following dot using
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* wrap around.
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*/
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mdot = dot - &message[0] + 1;
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/*
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* Find the first message in the supplied
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* message list which follows dot.
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*/
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for (ip = msgvec; *ip != 0; ip++)
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if (*ip > mdot)
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break;
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if (*ip == 0)
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ip = msgvec;
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ip2 = ip;
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do {
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mp = &message[*ip2 - 1];
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if ((mp->m_flag & MDELETED) == 0) {
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dot = mp;
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goto hitit;
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}
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if (*ip2 != 0)
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ip2++;
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if (*ip2 == 0)
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ip2 = msgvec;
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} while (ip2 != ip);
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printf("No messages applicable\n");
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return(1);
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}
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/*
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* If this is the first command, select message 1.
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* Note that this must exist for us to get here at all.
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*/
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if (!sawcom)
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goto hitit;
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/*
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* Just find the next good message after dot, no
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* wraparound.
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*/
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for (mp = dot+1; mp < &message[msgCount]; mp++)
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if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
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break;
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if (mp >= &message[msgCount]) {
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printf("At EOF\n");
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return(0);
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}
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dot = mp;
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hitit:
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/*
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* Print dot.
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*/
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list[0] = dot - &message[0] + 1;
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list[1] = 0;
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return(type(list));
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}
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/*
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* Save a message in a file. Mark the message as saved
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* so we can discard when the user quits.
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*/
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int
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save(str)
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char str[];
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{
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return save1(str, 1, "save", saveignore);
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}
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/*
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* Copy a message to a file without affected its saved-ness
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*/
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int
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copycmd(str)
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char str[];
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{
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return save1(str, 0, "copy", saveignore);
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}
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/*
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* Save/copy the indicated messages at the end of the passed file name.
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* If mark is true, mark the message "saved."
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*/
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int
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save1(str, mark, cmd, ignore)
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char str[];
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int mark;
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char *cmd;
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struct ignoretab *ignore;
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{
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register int *ip;
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register struct message *mp;
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char *file, *disp;
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int f, *msgvec;
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FILE *obuf;
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msgvec = (int *) salloc((msgCount + 2) * sizeof *msgvec);
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if ((file = snarf(str, &f)) == NOSTR)
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return(1);
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if (!f) {
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*msgvec = first(0, MMNORM);
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if (*msgvec == 0) {
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printf("No messages to %s.\n", cmd);
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return(1);
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}
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msgvec[1] = 0;
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}
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if (f && getmsglist(str, msgvec, 0) < 0)
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return(1);
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if ((file = expand(file)) == NOSTR)
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return(1);
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printf("\"%s\" ", file);
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fflush(stdout);
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if (access(file, 0) >= 0)
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disp = "[Appended]";
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else
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disp = "[New file]";
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if ((obuf = Fopen(file, "a")) == NULL) {
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perror(NOSTR);
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return(1);
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}
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for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
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mp = &message[*ip - 1];
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touch(mp);
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if (send(mp, obuf, ignore, NOSTR) < 0) {
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perror(file);
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Fclose(obuf);
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return(1);
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}
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if (mark)
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mp->m_flag |= MSAVED;
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}
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fflush(obuf);
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if (ferror(obuf))
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perror(file);
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Fclose(obuf);
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printf("%s\n", disp);
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return(0);
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}
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/*
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* Write the indicated messages at the end of the passed
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* file name, minus header and trailing blank line.
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*/
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int
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swrite(str)
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char str[];
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{
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return save1(str, 1, "write", ignoreall);
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}
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/*
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* Snarf the file from the end of the command line and
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* return a pointer to it. If there is no file attached,
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* just return NOSTR. Put a null in front of the file
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* name so that the message list processing won't see it,
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* unless the file name is the only thing on the line, in
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* which case, return 0 in the reference flag variable.
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*/
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char *
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snarf(linebuf, flag)
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char linebuf[];
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int *flag;
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{
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register char *cp;
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*flag = 1;
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cp = strlen(linebuf) + linebuf - 1;
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/*
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* Strip away trailing blanks.
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*/
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while (cp > linebuf && isspace(*cp))
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cp--;
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*++cp = 0;
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/*
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* Now search for the beginning of the file name.
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*/
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while (cp > linebuf && !isspace(*cp))
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cp--;
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if (*cp == '\0') {
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printf("No file specified.\n");
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return(NOSTR);
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}
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if (isspace(*cp))
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*cp++ = 0;
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else
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*flag = 0;
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return(cp);
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}
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/*
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* Delete messages.
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*/
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int
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delete(msgvec)
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int msgvec[];
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{
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delm(msgvec);
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return 0;
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}
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/*
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* Delete messages, then type the new dot.
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*/
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int
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deltype(msgvec)
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int msgvec[];
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{
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int list[2];
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int lastdot;
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lastdot = dot - &message[0] + 1;
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if (delm(msgvec) >= 0) {
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list[0] = dot - &message[0] + 1;
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if (list[0] > lastdot) {
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touch(dot);
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list[1] = 0;
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return(type(list));
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}
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printf("At EOF\n");
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} else
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printf("No more messages\n");
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return(0);
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}
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/*
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* Delete the indicated messages.
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* Set dot to some nice place afterwards.
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* Internal interface.
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*/
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int
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delm(msgvec)
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int *msgvec;
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{
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register struct message *mp;
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register *ip;
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int last;
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last = 0;
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for (ip = msgvec; *ip != 0; ip++) {
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mp = &message[*ip - 1];
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touch(mp);
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mp->m_flag |= MDELETED|MTOUCH;
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mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX);
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last = *ip;
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}
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if (last != 0) {
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dot = &message[last-1];
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last = first(0, MDELETED);
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if (last != 0) {
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dot = &message[last-1];
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return(0);
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}
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else {
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dot = &message[0];
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return(-1);
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}
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}
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/*
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* Following can't happen -- it keeps lint happy
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*/
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return(-1);
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}
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/*
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* Undelete the indicated messages.
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*/
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int
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undelete_messages(msgvec)
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int *msgvec;
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{
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register struct message *mp;
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register *ip;
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for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
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mp = &message[*ip - 1];
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touch(mp);
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dot = mp;
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mp->m_flag &= ~MDELETED;
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}
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return 0;
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}
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/*
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* Interactively dump core on "core"
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*/
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int
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core()
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{
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int pid;
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extern union wait wait_status;
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switch (pid = vfork()) {
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case -1:
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perror("fork");
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return(1);
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case 0:
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abort();
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_exit(1);
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}
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printf("Okie dokie");
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fflush(stdout);
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wait_child(pid);
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if (wait_status.w_coredump)
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printf(" -- Core dumped.\n");
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else
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printf(" -- Can't dump core.\n");
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return 0;
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}
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/*
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* Clobber as many bytes of stack as the user requests.
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*/
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int
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clobber(argv)
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char **argv;
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{
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register int times;
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if (argv[0] == 0)
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times = 1;
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else
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times = (atoi(argv[0]) + 511) / 512;
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clob1(times);
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return 0;
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}
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/*
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* Clobber the stack.
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*/
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void
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clob1(n)
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int n;
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{
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char buf[512];
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register char *cp;
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if (n <= 0)
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return;
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for (cp = buf; cp < &buf[512]; *cp++ = 0xFF)
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;
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clob1(n - 1);
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}
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/*
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* Add the given header fields to the retained list.
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* If no arguments, print the current list of retained fields.
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*/
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int
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retfield(list)
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char *list[];
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{
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return ignore1(list, ignore + 1, "retained");
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}
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/*
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* Add the given header fields to the ignored list.
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* If no arguments, print the current list of ignored fields.
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*/
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int
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igfield(list)
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char *list[];
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{
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return ignore1(list, ignore, "ignored");
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}
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int
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saveretfield(list)
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char *list[];
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{
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return ignore1(list, saveignore + 1, "retained");
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}
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int
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saveigfield(list)
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char *list[];
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{
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return ignore1(list, saveignore, "ignored");
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}
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int
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ignore1(list, tab, which)
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char *list[];
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struct ignoretab *tab;
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char *which;
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{
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char field[BUFSIZ];
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register int h;
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register struct ignore *igp;
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char **ap;
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if (*list == NOSTR)
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return igshow(tab, which);
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for (ap = list; *ap != 0; ap++) {
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istrcpy(field, *ap);
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if (member(field, tab))
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continue;
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h = hash(field);
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igp = (struct ignore *) calloc(1, sizeof (struct ignore));
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igp->i_field = calloc((unsigned) strlen(field) + 1,
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sizeof (char));
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strcpy(igp->i_field, field);
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igp->i_link = tab->i_head[h];
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tab->i_head[h] = igp;
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tab->i_count++;
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}
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return 0;
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}
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/*
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* Print out all currently retained fields.
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*/
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int
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igshow(tab, which)
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struct ignoretab *tab;
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char *which;
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{
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register int h;
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struct ignore *igp;
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char **ap, **ring;
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int igcomp();
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if (tab->i_count == 0) {
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printf("No fields currently being %s.\n", which);
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return 0;
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}
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ring = (char **) salloc((tab->i_count + 1) * sizeof (char *));
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ap = ring;
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for (h = 0; h < HSHSIZE; h++)
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for (igp = tab->i_head[h]; igp != 0; igp = igp->i_link)
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*ap++ = igp->i_field;
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*ap = 0;
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qsort(ring, tab->i_count, sizeof (char *), igcomp);
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for (ap = ring; *ap != 0; ap++)
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printf("%s\n", *ap);
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return 0;
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}
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/*
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* Compare two names for sorting ignored field list.
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*/
|
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int
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igcomp(l, r)
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const void *l, *r;
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{
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return (strcmp(*(char **)l, *(char **)r));
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}
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