4.3BSD-Reno/src/usr.bin/mail/cmd2.c
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)cmd2.c 5.14 (Berkeley) 6/25/90";
#endif /* not lint */
#include "rcv.h"
#include <sys/wait.h>
/*
* Mail -- a mail program
*
* More user commands.
*/
/*
* If any arguments were given, go to the next applicable argument
* following dot, otherwise, go to the next applicable message.
* If given as first command with no arguments, print first message.
*/
next(msgvec)
int *msgvec;
{
register struct message *mp;
register int *ip, *ip2;
int list[2], mdot;
if (*msgvec != NULL) {
/*
* If some messages were supplied, find the
* first applicable one following dot using
* wrap around.
*/
mdot = dot - &message[0] + 1;
/*
* Find the first message in the supplied
* message list which follows dot.
*/
for (ip = msgvec; *ip != NULL; ip++)
if (*ip > mdot)
break;
if (*ip == NULL)
ip = msgvec;
ip2 = ip;
do {
mp = &message[*ip2 - 1];
if ((mp->m_flag & MDELETED) == 0) {
dot = mp;
goto hitit;
}
if (*ip2 != NULL)
ip2++;
if (*ip2 == NULL)
ip2 = msgvec;
} while (ip2 != ip);
printf("No messages applicable\n");
return(1);
}
/*
* If this is the first command, select message 1.
* Note that this must exist for us to get here at all.
*/
if (!sawcom)
goto hitit;
/*
* Just find the next good message after dot, no
* wraparound.
*/
for (mp = dot+1; mp < &message[msgCount]; mp++)
if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
break;
if (mp >= &message[msgCount]) {
printf("At EOF\n");
return(0);
}
dot = mp;
hitit:
/*
* Print dot.
*/
list[0] = dot - &message[0] + 1;
list[1] = NULL;
return(type(list));
}
/*
* Save a message in a file. Mark the message as saved
* so we can discard when the user quits.
*/
save(str)
char str[];
{
return save1(str, 1, "save", saveignore);
}
/*
* Copy a message to a file without affected its saved-ness
*/
copycmd(str)
char str[];
{
return save1(str, 0, "copy", saveignore);
}
/*
* Save/copy the indicated messages at the end of the passed file name.
* If mark is true, mark the message "saved."
*/
save1(str, mark, cmd, ignore)
char str[];
char *cmd;
struct ignoretab *ignore;
{
register int *ip;
register struct message *mp;
char *file, *disp;
int f, *msgvec;
FILE *obuf;
msgvec = (int *) salloc((msgCount + 2) * sizeof *msgvec);
if ((file = snarf(str, &f)) == NOSTR)
return(1);
if (!f) {
*msgvec = first(0, MMNORM);
if (*msgvec == NULL) {
printf("No messages to %s.\n", cmd);
return(1);
}
msgvec[1] = NULL;
}
if (f && getmsglist(str, msgvec, 0) < 0)
return(1);
if ((file = expand(file)) == NOSTR)
return(1);
printf("\"%s\" ", file);
fflush(stdout);
if (access(file, 0) >= 0)
disp = "[Appended]";
else
disp = "[New file]";
if ((obuf = Fopen(file, "a")) == NULL) {
perror(NOSTR);
return(1);
}
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mp = &message[*ip - 1];
touch(mp);
if (send(mp, obuf, ignore, NOSTR) < 0) {
perror(file);
Fclose(obuf);
return(1);
}
if (mark)
mp->m_flag |= MSAVED;
}
fflush(obuf);
if (ferror(obuf))
perror(file);
Fclose(obuf);
printf("%s\n", disp);
return(0);
}
/*
* Write the indicated messages at the end of the passed
* file name, minus header and trailing blank line.
*/
swrite(str)
char str[];
{
return save1(str, 1, "write", ignoreall);
}
/*
* Snarf the file from the end of the command line and
* return a pointer to it. If there is no file attached,
* just return NOSTR. Put a null in front of the file
* name so that the message list processing won't see it,
* unless the file name is the only thing on the line, in
* which case, return 0 in the reference flag variable.
*/
char *
snarf(linebuf, flag)
char linebuf[];
int *flag;
{
register char *cp;
*flag = 1;
cp = strlen(linebuf) + linebuf - 1;
/*
* Strip away trailing blanks.
*/
while (cp > linebuf && isspace(*cp))
cp--;
*++cp = 0;
/*
* Now search for the beginning of the file name.
*/
while (cp > linebuf && !isspace(*cp))
cp--;
if (*cp == '\0') {
printf("No file specified.\n");
return(NOSTR);
}
if (isspace(*cp))
*cp++ = 0;
else
*flag = 0;
return(cp);
}
/*
* Delete messages.
*/
delete(msgvec)
int msgvec[];
{
delm(msgvec);
return 0;
}
/*
* Delete messages, then type the new dot.
*/
deltype(msgvec)
int msgvec[];
{
int list[2];
int lastdot;
lastdot = dot - &message[0] + 1;
if (delm(msgvec) >= 0) {
list[0] = dot - &message[0] + 1;
if (list[0] > lastdot) {
touch(dot);
list[1] = NULL;
return(type(list));
}
printf("At EOF\n");
} else
printf("No more messages\n");
return(0);
}
/*
* Delete the indicated messages.
* Set dot to some nice place afterwards.
* Internal interface.
*/
delm(msgvec)
int *msgvec;
{
register struct message *mp;
register *ip;
int last;
last = NULL;
for (ip = msgvec; *ip != NULL; ip++) {
mp = &message[*ip - 1];
touch(mp);
mp->m_flag |= MDELETED|MTOUCH;
mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX);
last = *ip;
}
if (last != NULL) {
dot = &message[last-1];
last = first(0, MDELETED);
if (last != NULL) {
dot = &message[last-1];
return(0);
}
else {
dot = &message[0];
return(-1);
}
}
/*
* Following can't happen -- it keeps lint happy
*/
return(-1);
}
/*
* Undelete the indicated messages.
*/
undelete(msgvec)
int *msgvec;
{
register struct message *mp;
register *ip;
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mp = &message[*ip - 1];
touch(mp);
dot = mp;
mp->m_flag &= ~MDELETED;
}
return 0;
}
/*
* Interactively dump core on "core"
*/
core()
{
int pid;
extern union wait wait_status;
switch (pid = vfork()) {
case -1:
perror("fork");
return(1);
case 0:
abort();
_exit(1);
}
printf("Okie dokie");
fflush(stdout);
wait_child(pid);
if (wait_status.w_coredump)
printf(" -- Core dumped.\n");
else
printf(" -- Can't dump core.\n");
return 0;
}
/*
* Clobber as many bytes of stack as the user requests.
*/
clobber(argv)
char **argv;
{
register int times;
if (argv[0] == 0)
times = 1;
else
times = (atoi(argv[0]) + 511) / 512;
clob1(times);
return 0;
}
/*
* Clobber the stack.
*/
clob1(n)
{
char buf[512];
register char *cp;
if (n <= 0)
return;
for (cp = buf; cp < &buf[512]; *cp++ = 0xFF)
;
clob1(n - 1);
}
/*
* Add the given header fields to the retained list.
* If no arguments, print the current list of retained fields.
*/
retfield(list)
char *list[];
{
return ignore1(list, ignore + 1, "retained");
}
/*
* Add the given header fields to the ignored list.
* If no arguments, print the current list of ignored fields.
*/
igfield(list)
char *list[];
{
return ignore1(list, ignore, "ignored");
}
saveretfield(list)
char *list[];
{
return ignore1(list, saveignore + 1, "retained");
}
saveigfield(list)
char *list[];
{
return ignore1(list, saveignore, "ignored");
}
ignore1(list, tab, which)
char *list[];
struct ignoretab *tab;
char *which;
{
char field[BUFSIZ];
register int h;
register struct ignore *igp;
char **ap;
if (*list == NOSTR)
return igshow(tab, which);
for (ap = list; *ap != 0; ap++) {
istrcpy(field, *ap);
if (member(field, tab))
continue;
h = hash(field);
igp = (struct ignore *) calloc(1, sizeof (struct ignore));
igp->i_field = calloc((unsigned) strlen(field) + 1,
sizeof (char));
strcpy(igp->i_field, field);
igp->i_link = tab->i_head[h];
tab->i_head[h] = igp;
tab->i_count++;
}
return 0;
}
/*
* Print out all currently retained fields.
*/
igshow(tab, which)
struct ignoretab *tab;
char *which;
{
register int h;
struct ignore *igp;
char **ap, **ring;
int igcomp();
if (tab->i_count == 0) {
printf("No fields currently being %s.\n", which);
return 0;
}
ring = (char **) salloc((tab->i_count + 1) * sizeof (char *));
ap = ring;
for (h = 0; h < HSHSIZE; h++)
for (igp = tab->i_head[h]; igp != 0; igp = igp->i_link)
*ap++ = igp->i_field;
*ap = 0;
qsort((char *) ring, tab->i_count, sizeof (char *), igcomp);
for (ap = ring; *ap != 0; ap++)
printf("%s\n", *ap);
return 0;
}
/*
* Compare two names for sorting ignored field list.
*/
igcomp(l, r)
char **l, **r;
{
return strcmp(*l, *r);
}