OpenBSD-4.6/usr.bin/mail/cmd2.c
/* $OpenBSD: cmd2.c,v 1.15 2004/09/15 22:21:40 deraadt Exp $ */
/* $NetBSD: cmd2.c,v 1.7 1997/05/17 19:55:10 pk Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static const char sccsid[] = "@(#)cmd2.c 8.1 (Berkeley) 6/6/93";
#else
static const char rcsid[] = "$OpenBSD: cmd2.c,v 1.15 2004/09/15 22:21:40 deraadt Exp $";
#endif
#endif /* not lint */
#include "rcv.h"
#include <sys/wait.h>
#include "extern.h"
/*
* Mail -- a mail program
*
* More user commands.
*/
static int igcomp(const void *, const void *);
/*
* 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.
*/
int
next(void *v)
{
struct message *mp;
int *msgvec = v;
int *ip, *ip2, 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 == 0)
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 == 0)
ip2 = msgvec;
} while (ip2 != ip);
puts("No messages applicable");
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]) {
puts("At EOF");
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.
*/
int
save(void *v)
{
char *str = v;
return(save1(str, 1, "save", saveignore));
}
/*
* Copy a message to a file without affected its saved-ness
*/
int
copycmd(void *v)
{
char *str = v;
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."
*/
int
save1(char *str, int mark, char *cmd, struct ignoretab *ignore)
{
struct message *mp;
char *file, *disp;
int f, *msgvec, *ip;
FILE *obuf;
msgvec = (int *)salloc((msgCount + 2) * sizeof(*msgvec));
if ((file = snarf(str, &f)) == NULL)
return(1);
if (!f) {
*msgvec = first(0, MMNORM);
if (*msgvec == 0) {
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)) == NULL)
return(1);
printf("\"%s\" ", file);
fflush(stdout);
if (access(file, 0) >= 0)
disp = "[Appended]";
else
disp = "[New file]";
if ((obuf = Fopen(file, "a")) == NULL) {
warn(NULL);
return(1);
}
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mp = &message[*ip - 1];
touch(mp);
if (sendmessage(mp, obuf, ignore, NULL) < 0) {
warn("%s", file);
(void)Fclose(obuf);
return(1);
}
if (mark)
mp->m_flag |= MSAVED;
}
fflush(obuf);
if (ferror(obuf))
warn("%s", file);
(void)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.
*/
int
swrite(void *v)
{
char *str = v;
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 NULL. 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(char *linebuf, int *flag)
{
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') {
puts("No file specified.");
return(NULL);
}
if (isspace(*cp))
*cp++ = 0;
else
*flag = 0;
return(cp);
}
/*
* Delete messages.
*/
int
deletecmd(void *v)
{
int *msgvec = v;
delm(msgvec);
return(0);
}
/*
* Delete messages, then type the new dot.
*/
int
deltype(void *v)
{
int *msgvec = v;
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));
}
puts("At EOF");
} else
puts("No more messages");
return(0);
}
/*
* Delete the indicated messages.
* Set dot to some nice place afterwards.
* Internal interface.
*/
int
delm(int *msgvec)
{
struct message *mp;
int *ip, 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.
*/
int
undeletecmd(void *v)
{
int *msgvec = v;
int *ip;
struct message *mp;
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"
*/
int
core(void *v)
{
pid_t pid;
extern int wait_status;
switch (pid = vfork()) {
case -1:
warn("vfork");
return(1);
case 0:
abort();
_exit(1);
}
fputs("Okie dokie", stdout);
fflush(stdout);
wait_child(pid);
if (WIFSIGNALED(wait_status) && WCOREDUMP(wait_status))
puts(" -- Core dumped.");
else
puts(" -- Can't dump core.");
return(0);
}
/*
* Add the given header fields to the retained list.
* If no arguments, print the current list of retained fields.
*/
int
retfield(void *v)
{
char **list = v;
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.
*/
int
igfield(void *v)
{
char **list = v;
return(ignore1(list, ignore, "ignored"));
}
int
saveretfield(void *v)
{
char **list = v;
return(ignore1(list, saveignore + 1, "retained"));
}
int
saveigfield(void *v)
{
char **list = v;
return(ignore1(list, saveignore, "ignored"));
}
int
ignore1(char **list, struct ignoretab *tab, char *which)
{
char field[LINESIZE];
char **ap;
struct ignore *igp;
int h;
if (*list == NULL)
return(igshow(tab, which));
for (ap = list; *ap != 0; ap++) {
istrlcpy(field, *ap, sizeof(field));
if (member(field, tab))
continue;
h = hash(field);
igp = (struct ignore *)calloc(1, sizeof(struct ignore));
if (igp == NULL)
errx(1, "Out of memory");
igp->i_field = strdup(field);
if (igp->i_field == NULL)
errx(1, "Out of memory");
igp->i_link = tab->i_head[h];
tab->i_head[h] = igp;
tab->i_count++;
}
return(0);
}
/*
* Print out all currently retained fields.
*/
int
igshow(struct ignoretab *tab, char *which)
{
int h;
struct ignore *igp;
char **ap, **ring;
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(ring, tab->i_count, sizeof(char *), igcomp);
for (ap = ring; *ap != 0; ap++)
puts(*ap);
return(0);
}
/*
* Compare two names for sorting ignored field list.
*/
static int
igcomp(const void *l, const void *r)
{
return(strcmp(*(char **)l, *(char **)r));
}