/* $NetBSD: cmd2.c,v 1.26 2017/11/09 20:27:50 christos 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)cmd2.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: cmd2.c,v 1.26 2017/11/09 20:27:50 christos Exp $");
#endif
#endif /* not lint */
#include "rcv.h"
#include <util.h>
#include "extern.h"
#ifdef MIME_SUPPORT
#include "mime.h"
#endif
#include "thread.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.
*/
PUBLIC int
next(void *v)
{
int *msgvec;
struct message *mp;
int *ip, *ip2;
int list[2], mdot;
msgvec = v;
if (*msgvec != 0) {
/*
* If some messages were supplied, find the
* first applicable one following dot using
* wrap around.
*/
mdot = get_msgnum(dot);
/*
* Find the first message in the supplied
* message list which follows dot.
*/
for (ip = msgvec; *ip != 0; ip++)
if (*ip > mdot)
break;
if (*ip == 0)
ip = msgvec;
ip2 = ip;
do {
mp = get_message(*ip2);
if ((mp->m_flag & MDELETED) == 0) {
dot = mp;
goto hitit;
}
if (*ip2 != 0)
ip2++;
if (*ip2 == 0)
ip2 = msgvec;
} while (ip2 != ip);
(void)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 = next_message(dot); mp; mp = next_message(mp))
if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
break;
if (mp == NULL) {
(void)printf("At EOF\n");
return 0;
}
dot = mp;
hitit:
/*
* Print dot.
*/
list[0] = get_msgnum(dot);
list[1] = 0;
return type(list);
}
/*
* 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.
*/
static char *
snarf(char linebuf[], int *flag, const char *string)
{
char *cp;
*flag = 1;
cp = strlen(linebuf) + linebuf - 1;
/*
* Strip away trailing blanks.
*/
while (cp >= linebuf && isspace((unsigned char)*cp))
cp--;
*++cp = '\0';
/*
* Now search for the beginning of the file name.
*/
while (cp > linebuf && !isspace((unsigned char)*cp))
cp--;
if (*cp == '\0') {
(void)printf("No %s specified.\n", string);
return NULL;
}
if (isspace((unsigned char)*cp))
*cp++ = '\0';
else
*flag = 0;
return cp;
}
struct save1_core_args_s {
FILE *obuf;
struct ignoretab *igtab;
int markmsg;
};
static int
save1_core(struct message *mp, void *v)
{
struct save1_core_args_s *args;
args = v;
touch(mp);
if (sendmessage(mp, args->obuf, args->igtab, NULL, NULL) < 0)
return -1;
if (args->markmsg)
mp->m_flag |= MSAVED;
return 0;
}
/*
* Save/copy the indicated messages at the end of the passed file name.
* If markmsg is true, mark the message "saved."
*/
static int
save1(char str[], int markmsg, const char *cmd, struct ignoretab *igtab)
{
int *ip;
const char *fn;
const char *disp;
int f, *msgvec;
int msgCount;
FILE *obuf;
msgCount = get_msgCount();
msgvec = salloc((msgCount + 2) * sizeof(*msgvec));
if ((fn = snarf(str, &f, "file")) == NULL)
return 1;
if (!f) {
*msgvec = first(0, MMNORM);
if (*msgvec == 0) {
(void)printf("No messages to %s.\n", cmd);
return 1;
}
msgvec[1] = 0;
}
if (f && getmsglist(str, msgvec, 0) < 0)
return 1;
if ((fn = expand(fn)) == NULL)
return 1;
(void)printf("\"%s\" ", fn);
(void)fflush(stdout);
if (access(fn, 0) >= 0)
disp = "[Appended]";
else
disp = "[New file]";
if ((obuf = Fopen(fn, "aef")) == NULL) {
warn(NULL);
return 1;
}
for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
struct save1_core_args_s args;
struct message *mp;
args.obuf = obuf;
args.igtab = igtab;
args.markmsg = markmsg;
mp = get_message(*ip);
if (thread_recursion(mp, save1_core, &args)) {
warn("%s", fn);
(void)Fclose(obuf);
return 1;
}
}
(void)fflush(obuf);
if (ferror(obuf))
warn("%s", fn);
(void)Fclose(obuf);
(void)printf("%s\n", disp);
return 0;
}
/*
* Save a message in a file. Mark the message as saved
* so we can discard when the user quits.
*/
PUBLIC int
save(void *v)
{
char *str;
str = v;
return save1(str, 1, "save", saveignore);
}
/*
* Save a message in a file. Mark the message as saved
* so we can discard when the user quits. Save all fields
* overriding saveignore and saveretain.
*/
PUBLIC int
Save(void *v)
{
char *str;
str = v;
return save1(str, 1, "Save", NULL);
}
/*
* Copy a message to a file without affected its saved-ness
*/
PUBLIC int
copycmd(void *v)
{
char *str;
str = v;
return save1(str, 0, "copy", saveignore);
}
/*
* Write the indicated messages at the end of the passed
* file name, minus header and trailing blank line.
*/
PUBLIC int
swrite(void *v)
{
char *str;
str = v;
return save1(str, 1, "write", ignoreall);
}
/*
* Delete the indicated messages.
* Set dot to some nice place afterwards.
* Internal interface.
*/
static int
delm(int *msgvec)
{
struct message *mp;
int *ip;
int last;
last = 0;
for (ip = msgvec; *ip != 0; ip++) {
mp = set_m_flag(*ip,
~(MPRESERVE|MSAVED|MBOX|MDELETED|MTOUCH), MDELETED|MTOUCH);
touch(mp);
last = *ip;
}
if (last != 0) {
dot = get_message(last);
last = first(0, MDELETED);
if (last != 0) {
dot = get_message(last);
return 0;
}
else {
dot = get_message(1);
return -1;
}
}
/*
* Following can't happen -- it keeps lint happy
*/
return -1;
}
/*
* Delete messages.
*/
PUBLIC int
delete(void *v)
{
int *msgvec;
msgvec = v;
(void)delm(msgvec);
return 0;
}
/*
* Delete messages, then type the new dot.
*/
PUBLIC int
deltype(void *v)
{
int *msgvec;
int list[2];
int lastdot;
msgvec = v;
lastdot = get_msgnum(dot);
if (delm(msgvec) >= 0) {
list[0] = get_msgnum(dot);
if (list[0] > lastdot) {
touch(dot);
list[1] = 0;
return type(list);
}
(void)printf("At EOF\n");
} else
(void)printf("No more messages\n");
return 0;
}
/*
* Undelete the indicated messages.
*/
PUBLIC int
undeletecmd(void *v)
{
int msgCount;
int *msgvec;
int *ip;
msgvec = v;
msgCount = get_msgCount();
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
dot = set_m_flag(*ip, ~MDELETED, 0);
touch(dot);
dot->m_flag &= ~MDELETED;
}
return 0;
}
/*************************************************************************/
/*
* Interactively dump core on "core"
*/
/*ARGSUSED*/
PUBLIC int
core(void *v __unused)
{
int pid;
switch (pid = vfork()) {
case -1:
warn("fork");
return 1;
case 0:
abort();
_exit(1);
}
(void)printf("Okie dokie");
(void)fflush(stdout);
(void)wait_child(pid);
if (WCOREDUMP(wait_status))
(void)printf(" -- Core dumped.\n");
else
(void)printf(" -- Can't dump core.\n");
return 0;
}
/*
* Clobber the stack.
*/
static void
clob1(int n)
{
char buf[512];
char *cp;
if (n <= 0)
return;
for (cp = buf; cp < &buf[512]; *cp++ = (char)0xFF)
continue;
clob1(n - 1);
}
/*
* Clobber as many bytes of stack as the user requests.
*/
PUBLIC int
clobber(void *v)
{
char **argv;
int times;
argv = v;
if (argv[0] == 0)
times = 1;
else
times = (atoi(argv[0]) + 511) / 512;
clob1(times);
return 0;
}
/*
* Compare two names for sorting ignored field list.
*/
static int
igcomp(const void *l, const void *r)
{
return strcmp(*(const char *const *)l, *(const char *const *)r);
}
/*
* Print out all currently retained fields.
*/
static int
igshow(struct ignoretab *tab, const char *which)
{
int h;
struct ignore *igp;
char **ap, **ring;
if (tab->i_count == 0) {
(void)printf("No fields currently being %s.\n", which);
return 0;
}
ring = 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++)
(void)printf("%s\n", *ap);
return 0;
}
/*
* core ignore routine.
*/
static int
ignore1(char *list[], struct ignoretab *tab, const char *which)
{
char **ap;
if (*list == NULL)
return igshow(tab, which);
for (ap = list; *ap != 0; ap++)
add_ignore(*ap, tab);
return 0;
}
/*
* Add the given header fields to the retained list.
* If no arguments, print the current list of retained fields.
*/
PUBLIC int
retfield(void *v)
{
char **list;
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.
*/
PUBLIC int
igfield(void *v)
{
char **list;
list = v;
return ignore1(list, ignore, "ignored");
}
/*
* Add the given header fields to the save retained list.
* If no arguments, print the current list of save retained fields.
*/
PUBLIC int
saveretfield(void *v)
{
char **list;
list = v;
return ignore1(list, saveignore + 1, "retained");
}
/*
* Add the given header fields to the save ignored list.
* If no arguments, print the current list of save ignored fields.
*/
PUBLIC int
saveigfield(void *v)
{
char **list;
list = v;
return ignore1(list, saveignore, "ignored");
}
#ifdef MIME_SUPPORT
static char*
check_dirname(char *filename)
{
struct stat sb;
char *fname;
char canon_buf[MAXPATHLEN];
char *canon_name;
canon_name = canon_buf;
fname = filename;
if (fname[0] == '~' && fname[1] == '/') {
if (homedir && homedir[0] != '~')
(void)easprintf(&fname, "%s/%s",
homedir, fname + 2);
}
if (realpath(fname, canon_name) == NULL) {
warn("realpath: %s", filename);
canon_name = NULL;
goto done;
}
if (stat(canon_name, &sb) == -1) {
warn("stat: %s", canon_name);
canon_name = NULL;
goto done;
}
if (!S_ISDIR(sb.st_mode)) {
warnx("stat: %s is not a directory", canon_name);
canon_name = NULL;
goto done;
}
if (access(canon_name, W_OK|X_OK) == -1) {
warnx("access: %s is not writable", canon_name);
canon_name = NULL;
goto done;
}
done:
if (fname != filename)
free(fname);
return canon_name ? savestr(canon_name) : NULL;
}
struct detach1_core_args_s {
struct message *parent;
struct ignoretab *igtab;
const char *dstdir;
};
static int
detach1_core(struct message *mp, void *v)
{
struct mime_info *mip;
struct detach1_core_args_s *args;
args = v;
touch(mp);
show_msgnum(stdout, mp, args->parent);
mip = mime_decode_open(mp);
mime_detach_msgnum(mip, sget_msgnum(mp, args->parent));
(void)mime_sendmessage(mp, NULL, args->igtab, args->dstdir, mip);
mime_decode_close(mip);
return 0;
}
/*
* detach attachments.
*/
static int
detach1(void *v, int do_unnamed)
{
int recursive;
int f;
int msgCount;
int *msgvec;
int *ip;
char *str;
char *dstdir;
str = v;
/*
* Get the destination directory.
*/
if ((dstdir = snarf(str, &f, "directory")) == NULL &&
(dstdir = value(ENAME_MIME_DETACH_DIR)) == NULL &&
(dstdir = origdir) == NULL)
return 1;
if ((dstdir = check_dirname(dstdir)) == NULL)
return 1;
/*
* Setup the message list.
*/
msgCount = get_msgCount();
msgvec = salloc((msgCount + 2) * sizeof(*msgvec));
if (!f) {
*msgvec = first(0, MMNORM);
if (*msgvec == 0) {
(void)printf("No messages to detach.\n");
return 1;
}
msgvec[1] = 0;
}
if (f && getmsglist(str, msgvec, 0) < 0)
return 1;
if (mime_detach_control() != 0)
return 1;
/*
* do 'dot' if nothing else was selected.
*/
if (msgvec[0] == 0 && dot != NULL) {
msgvec[0] = get_msgnum(dot);
msgvec[1] = 0;
}
recursive = do_recursion();
for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
struct detach1_core_args_s args;
struct message *mp;
mp = get_message(*ip);
dot = mp;
args.parent = recursive ? mp : NULL;
args.igtab = do_unnamed ? detachall : ignoreall;
args.dstdir = dstdir;
(void)thread_recursion(mp, detach1_core, &args);
}
return 0;
}
/*
* detach named attachments.
*/
PUBLIC int
detach(void *v)
{
return detach1(v, 0);
}
/*
* detach all attachments.
*/
PUBLIC int
Detach(void *v)
{
return detach1(v, 1);
}
#endif /* MIME_SUPPORT */