static char sccsid
[] = "@(#)rexecd.c 4.1 82/04/02";
struct sockaddr_in sin
= { AF_INET
, IPPORT_EXECSERVER
};
struct passwd
*getpwnam();
char *crypt(), *rindex(), *sprintf();
int options
= SO_ACCEPTCONN
|SO_KEEPALIVE
;
{ int t
= open("/dev/tty", 2);
ioctl(t
, TIOCNOTTY
, (char *)0);
sin
.sin_port
= htons(sin
.sin_port
);
if (argc
> 0 && !strcmp(argv
[0], "-d"))
f
= socket(SOCK_STREAM
, 0, &sin
, options
);
if (accept(f
, &from
) < 0) {
while(wait3(status
, WNOHANG
, 0) > 0)
char username
[20] = "USER=";
char homedir
[64] = "HOME=";
char shell
[64] = "SHELL=";
{homedir
, shell
, "PATH=:/usr/ucb:/bin:/usr/bin", username
, 0};
struct sockaddr_in asin
= { AF_INET
};
struct sockaddr_in
*fromp
;
char cmdbuf
[NCARGS
+1], *cp
, *namep
;
int pv
[2], pid
, ready
, readfrom
, cc
;
(void) signal(SIGINT
, SIG_DFL
);
(void) signal(SIGQUIT
, SIG_DFL
);
(void) signal(SIGTERM
, SIG_DFL
);
{ int t
= open("/dev/tty", 2);
ioctl(t
, TIOCNOTTY
, (char *)0);
fromp
->sin_port
= ntohs((u_short
)fromp
->sin_port
);
port
= port
* 10 + c
- '0';
s
= socket(SOCK_STREAM
, 0, &asin
, 0);
fromp
->sin_port
= ntohs(fromp
->sin_port
);
if (connect(s
, fromp
) < 0)
getstr(user
, sizeof(user
), "username");
getstr(pass
, sizeof(pass
), "password");
getstr(cmdbuf
, sizeof(cmdbuf
), "command");
error("Login incorrect.\n");
if (*pwd
->pw_passwd
!= '\0') {
namep
= crypt(pass
, pwd
->pw_passwd
);
if (strcmp(namep
, pwd
->pw_passwd
)) {
error("Password incorrect.\n");
if (chdir(pwd
->pw_dir
) < 0) {
error("No remote directory.\n");
(void) write(2, "\0", 1);
(void) close(0); (void) close(1); (void) close(2);
(void) close(f
); (void) close(pv
[1]);
readfrom
= (1<<s
) | (1<<pv
[0]);
ioctl(pv
[1], FIONBIO
, (char *)&one
);
(void) select(32, &ready
, 0, 1000000);
if (read(s
, &sig
, 1) <= 0)
if (ready
& (1<<pv
[0])) {
cc
= read(pv
[0], buf
, sizeof (buf
));
ioctl(s
, SIOCDONE
, (char *)&done
);
(void) write(s
, buf
, cc
);
(void) close(s
); (void)close(pv
[0]);
if (*pwd
->pw_shell
== '\0')
pwd
->pw_shell
= "/bin/sh";
inigrp(pwd
->pw_name
, pwd
->pw_gid
);
(void) setuid(pwd
->pw_uid
);
(void) setgid(pwd
->pw_gid
);
strncat(homedir
, pwd
->pw_dir
, sizeof(homedir
)-6);
strncat(shell
, pwd
->pw_shell
, sizeof(shell
)-7);
strncat(username
, pwd
->pw_name
, sizeof(username
)-6);
cp
= rindex(pwd
->pw_shell
, '/');
execl(pwd
->pw_shell
, cp
, "-c", cmdbuf
, 0);
(void) sprintf(buf
+1, fmt
, a1
, a2
, a3
);
(void) write(2, buf
, strlen(buf
));
error("%s too long\n", err
);