4.4BSD/usr/src/contrib/connectd/tip/cmds.c
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef lint
static char sccsid[] = "@(#)cmds.c 5.4 (Berkeley) 5/5/86";
#endif not lint
#include "tip.h"
/*
* tip
*
* miscellaneous commands
*/
int quant[] = { 60, 60, 24 };
char null = '\0';
char *sep[] = { "second", "minute", "hour" };
static char *argv[10]; /* argument vector for take and put */
int timeout(); /* timeout function called on alarm */
int stopsnd(); /* SIGINT handler during file transfers */
int intprompt(); /* used in handling SIG_INT during prompt */
int intcopy(); /* interrupt routine for file transfers */
/*
* FTP - remote ==> local
* get a file from the remote host
*/
getfl(c)
char c;
{
char buf[256], *cp, *expand();
putchar(c);
/*
* get the UNIX receiving file's name
*/
if (prompt("Local file name? ", copyname))
return;
cp = expand(copyname);
if ((sfd = creat(cp, 0666)) < 0) {
printf("\r\n%s: cannot creat\r\n", copyname);
return;
}
/*
* collect parameters
*/
if (prompt("List command for remote system? ", buf)) {
unlink(copyname);
return;
}
transfer(buf, sfd, value(EOFREAD));
}
/*
* Cu-like take command
*/
cu_take(cc)
char cc;
{
int fd, argc;
char line[BUFSIZ], *expand(), *cp;
if (prompt("[take] ", copyname))
return;
if ((argc = args(copyname, argv)) < 1 || argc > 2) {
printf("usage: <take> from [to]\r\n");
return;
}
if (argc == 1)
argv[1] = argv[0];
cp = expand(argv[1]);
if ((fd = creat(cp, 0666)) < 0) {
printf("\r\n%s: cannot create\r\n", argv[1]);
return;
}
sprintf(line, "cat %s;echo \01", argv[0]);
transfer(line, fd, "\01");
}
static jmp_buf intbuf;
/*
* Bulk transfer routine --
* used by getfl(), cu_take(), and pipefile()
*/
transfer(buf, fd, eofchars)
char *buf, *eofchars;
{
register int ct;
char c, buffer[BUFSIZ];
register char *p = buffer;
register int cnt, eof;
time_t start;
int (*f)();
pwrite(FD, buf, size(buf));
quit = 0;
kill(pid, SIGIOT);
read(repdes[0], (char *)&ccc, 1); /* Wait until read process stops */
/*
* finish command
*/
pwrite(FD, "\r", 1);
do
read(FD, &c, 1);
while ((c&0177) != '\n');
ioctl(0, TIOCSETC, &defchars);
(void) setjmp(intbuf);
f = signal(SIGINT, intcopy);
start = time(0);
for (ct = 0; !quit;) {
eof = read(FD, &c, 1) <= 0;
c &= 0177;
if (quit)
continue;
if (eof || any(c, eofchars))
break;
if (c == 0)
continue; /* ignore nulls */
if (c == '\r')
continue;
*p++ = c;
if (c == '\n' && boolean(value(VERBOSE)))
printf("\r%d", ++ct);
if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
if (write(fd, buffer, cnt) != cnt) {
printf("\r\nwrite error\r\n");
quit = 1;
}
p = buffer;
}
}
if (cnt = (p-buffer))
if (write(fd, buffer, cnt) != cnt)
printf("\r\nwrite error\r\n");
if (boolean(value(VERBOSE)))
prtime(" lines transferred in ", time(0)-start);
ioctl(0, TIOCSETC, &tchars);
write(fildes[1], (char *)&ccc, 1);
signal(SIGINT, f);
close(fd);
}
/*
* FTP - remote ==> local process
* send remote input to local process via pipe
*/
pipefile()
{
int cpid, pdes[2];
char buf[256];
int status, p;
extern int errno;
if (prompt("Local command? ", buf))
return;
if (pipe(pdes)) {
printf("can't establish pipe\r\n");
return;
}
if ((cpid = fork()) < 0) {
printf("can't fork!\r\n");
return;
} else if (cpid) {
if (prompt("List command for remote system? ", buf)) {
close(pdes[0]), close(pdes[1]);
kill (cpid, SIGKILL);
} else {
close(pdes[0]);
signal(SIGPIPE, intcopy);
transfer(buf, pdes[1], value(EOFREAD));
signal(SIGPIPE, SIG_DFL);
while ((p = wait(&status)) > 0 && p != cpid)
;
}
} else {
register int f;
dup2(pdes[0], 0);
close(pdes[0]);
for (f = 3; f < 20; f++)
close(f);
execute(buf);
printf("can't execl!\r\n");
exit(0);
}
}
/*
* Interrupt service routine for FTP
*/
stopsnd()
{
stop = 1;
signal(SIGINT, SIG_IGN);
}
/*
* FTP - local ==> remote
* send local file to remote host
* terminate transmission with pseudo EOF sequence
*/
sendfile(cc)
char cc;
{
FILE *fd;
char *fnamex;
char *expand();
putchar(cc);
/*
* get file name
*/
if (prompt("Local file name? ", fname))
return;
/*
* look up file
*/
fnamex = expand(fname);
if ((fd = fopen(fnamex, "r")) == NULL) {
printf("%s: cannot open\r\n", fname);
return;
}
transmit(fd, value(EOFWRITE), NULL);
if (!boolean(value(ECHOCHECK))) {
struct sgttyb buf;
ioctl(FD, TIOCGETP, &buf); /* this does a */
ioctl(FD, TIOCSETP, &buf); /* wflushtty */
}
}
/*
* Bulk transfer routine to remote host --
* used by sendfile() and cu_put()
*/
transmit(fd, eofchars, command)
FILE *fd;
char *eofchars, *command;
{
char *pc, lastc;
int c, ccount, lcount;
time_t start_t, stop_t;
int (*f)();
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
stop = 0;
f = signal(SIGINT, stopsnd);
ioctl(0, TIOCSETC, &defchars);
read(repdes[0], (char *)&ccc, 1);
if (command != NULL) {
for (pc = command; *pc; pc++)
send(*pc);
if (boolean(value(ECHOCHECK)))
read(FD, (char *)&c, 1); /* trailing \n */
else {
struct sgttyb buf;
ioctl(FD, TIOCGETP, &buf); /* this does a */
ioctl(FD, TIOCSETP, &buf); /* wflushtty */
sleep(5); /* wait for remote stty to take effect */
}
}
lcount = 0;
lastc = '\0';
start_t = time(0);
while (1) {
ccount = 0;
do {
c = getc(fd);
if (stop)
goto out;
if (c == EOF)
goto out;
if (c == 0177 && !boolean(value(RAWFTP)))
continue;
lastc = c;
if (c < 040) {
if (c == '\n') {
if (!boolean(value(RAWFTP)))
c = '\r';
}
else if (c == '\t') {
if (!boolean(value(RAWFTP))) {
if (boolean(value(TABEXPAND))) {
send(' ');
while ((++ccount % 8) != 0)
send(' ');
continue;
}
}
} else
if (!boolean(value(RAWFTP)))
continue;
}
send(c);
} while (c != '\r' && !boolean(value(RAWFTP)));
if (boolean(value(VERBOSE)))
printf("\r%d", ++lcount);
if (boolean(value(ECHOCHECK))) {
timedout = 0;
alarm(value(ETIMEOUT));
do { /* wait for prompt */
read(FD, (char *)&c, 1);
if (timedout || stop) {
if (timedout)
printf("\r\ntimed out at eol\r\n");
alarm(0);
goto out;
}
} while ((c&0177) != character(value(PROMPT)));
alarm(0);
}
}
out:
if (lastc != '\n' && !boolean(value(RAWFTP)))
send('\r');
for (pc = eofchars; *pc; pc++)
send(*pc);
stop_t = time(0);
fclose(fd);
signal(SIGINT, f);
if (boolean(value(VERBOSE)))
if (boolean(value(RAWFTP)))
prtime(" chars transferred in ", stop_t-start_t);
else
prtime(" lines transferred in ", stop_t-start_t);
write(fildes[1], (char *)&ccc, 1);
ioctl(0, TIOCSETC, &tchars);
}
/*
* Cu-like put command
*/
cu_put(cc)
char cc;
{
FILE *fd;
char line[BUFSIZ];
int argc;
char *expand();
char *copynamex;
if (prompt("[put] ", copyname))
return;
if ((argc = args(copyname, argv)) < 1 || argc > 2) {
printf("usage: <put> from [to]\r\n");
return;
}
if (argc == 1)
argv[1] = argv[0];
copynamex = expand(argv[0]);
if ((fd = fopen(copynamex, "r")) == NULL) {
printf("%s: cannot open\r\n", copynamex);
return;
}
if (boolean(value(ECHOCHECK)))
sprintf(line, "cat>%s\r", argv[1]);
else
sprintf(line, "stty -echo;cat>%s;stty echo\r", argv[1]);
transmit(fd, "\04", line);
}
/*
* FTP - send single character
* wait for echo & handle timeout
*/
send(c)
char c;
{
char cc;
int retry = 0;
cc = c;
pwrite(FD, &cc, 1);
#ifdef notdef
if (number(value(CDELAY)) > 0 && c != '\r')
nap(number(value(CDELAY)));
#endif
if (!boolean(value(ECHOCHECK))) {
#ifdef notdef
if (number(value(LDELAY)) > 0 && c == '\r')
nap(number(value(LDELAY)));
#endif
return;
}
tryagain:
timedout = 0;
alarm(value(ETIMEOUT));
read(FD, &cc, 1);
alarm(0);
if (timedout) {
printf("\r\ntimeout error (%s)\r\n", ctrl(c));
if (retry++ > 3)
return;
pwrite(FD, &null, 1); /* poke it */
goto tryagain;
}
}
timeout()
{
signal(SIGALRM, timeout);
timedout = 1;
}
/*
* Stolen from consh() -- puts a remote file on the output of a local command.
* Identical to consh() except for where stdout goes.
*/
pipeout(c)
{
char buf[256];
int cpid, status, p;
time_t start;
putchar(c);
if (prompt("Local command? ", buf))
return;
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
ioctl(0, TIOCSETC, &defchars);
read(repdes[0], (char *)&ccc, 1);
/*
* Set up file descriptors in the child and
* let it go...
*/
if ((cpid = fork()) < 0)
printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
} else {
register int i;
dup2(FD, 1);
for (i = 3; i < 20; i++)
close(i);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
execute(buf);
printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("away for ", time(0)-start);
write(fildes[1], (char *)&ccc, 1);
ioctl(0, TIOCSETC, &tchars);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
}
#ifdef CONNECT
/*
* Fork a program with:
* 0 <-> local tty in
* 1 <-> local tty out
* 2 <-> local tty out
* 3 <-> remote tty in
* 4 <-> remote tty out
*/
consh(c)
{
char buf[256];
int cpid, status, p;
time_t start;
putchar(c);
if (prompt("Local command? ", buf))
return;
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
ioctl(0, TIOCSETC, &defchars);
read(repdes[0], (char *)&ccc, 1);
/*
* Set up file descriptors in the child and
* let it go...
*/
if ((cpid = fork()) < 0)
printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
} else {
register int i;
dup2(FD, 3);
dup2(3, 4);
for (i = 5; i < 20; i++)
close(i);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
execute(buf);
printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("away for ", time(0)-start);
write(fildes[1], (char *)&ccc, 1);
ioctl(0, TIOCSETC, &tchars);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
}
#endif
/*
* Escape to local shell
*/
shell()
{
int shpid, status;
extern char **environ;
char *cp;
printf("[sh]\r\n");
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
unraw();
if (shpid = fork()) {
while (shpid != wait(&status));
raw();
printf("\r\n!\r\n");
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
return;
} else {
signal(SIGQUIT, SIG_DFL);
signal(SIGINT, SIG_DFL);
if ((cp = rindex(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
execl(value(SHELL), cp, 0);
printf("\r\ncan't execl!\r\n");
exit(1);
}
}
/*
* TIPIN portion of scripting
* initiate the conversation with TIPOUT
*/
setscript()
{
char c;
/*
* enable TIPOUT side for dialogue
*/
kill(pid, SIGEMT);
if (boolean(value(SCRIPT)))
write(fildes[1], value(RECORD), size(value(RECORD)));
write(fildes[1], "\n", 1);
/*
* wait for TIPOUT to finish
*/
read(repdes[0], &c, 1);
if (c == 'n')
printf("can't create %s\r\n", value(RECORD));
}
/*
* Change current working directory of
* local portion of tip
*/
chdirectory()
{
char dirname[80];
register char *cp = dirname;
if (prompt("[cd] ", dirname)) {
if (stoprompt)
return;
cp = value(HOME);
}
if (chdir(cp) < 0)
printf("%s: bad directory\r\n", cp);
printf("!\r\n");
}
abort(msg)
char *msg;
{
kill(pid, SIGTERM);
if (msg != NOSTR)
printf("\r\n%s", msg);
printf("\r\n[EOT]\r\n");
unraw();
cleanup();
exit(0);
}
finish()
{
char *dismsg;
#ifdef notdef
if ((dismsg = value(DISCONNECT)) != NOSTR) {
write(FD, dismsg, strlen(dismsg));
sleep(5);
}
#endif
abort(NOSTR);
}
intcopy()
{
raw();
quit = 1;
longjmp(intbuf, 1);
}
execute(s)
char *s;
{
register char *cp;
if ((cp = rindex(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
execl(value(SHELL), cp, "-c", s, 0);
}
args(buf, a)
char *buf, *a[];
{
register char *p = buf, *start;
register char **parg = a;
register int n = 0;
do {
while (*p && (*p == ' ' || *p == '\t'))
p++;
start = p;
if (*p)
*parg = p;
while (*p && (*p != ' ' && *p != '\t'))
p++;
if (p != start)
parg++, n++;
if (*p)
*p++ = '\0';
} while (*p);
return(n);
}
prtime(s, a)
char *s;
time_t a;
{
register i;
int nums[3];
for (i = 0; i < 3; i++) {
nums[i] = (int)(a % quant[i]);
a /= quant[i];
}
printf("%s", s);
while (--i >= 0)
if (nums[i] || i == 0 && nums[1] == 0 && nums[2] == 0)
printf("%d %s%c ", nums[i], sep[i],
nums[i] == 1 ? '\0' : 's');
printf("\r\n!\r\n");
}
variable()
{
char buf[256];
if (prompt("[set] ", buf))
return;
vlex(buf);
if (vtable[BEAUTIFY].v_access&CHANGED) {
vtable[BEAUTIFY].v_access &= ~CHANGED;
kill(pid, SIGSYS);
}
if (vtable[SCRIPT].v_access&CHANGED) {
vtable[SCRIPT].v_access &= ~CHANGED;
setscript();
/*
* So that "set record=blah script" doesn't
* cause two transactions to occur.
*/
if (vtable[RECORD].v_access&CHANGED)
vtable[RECORD].v_access &= ~CHANGED;
}
if (vtable[RECORD].v_access&CHANGED) {
vtable[RECORD].v_access &= ~CHANGED;
if (boolean(value(SCRIPT)))
setscript();
}
if (vtable[TAND].v_access&CHANGED) {
vtable[TAND].v_access &= ~CHANGED;
if (boolean(value(TAND)))
tandem("on");
else
tandem("off");
}
if (vtable[LECHO].v_access&CHANGED) {
vtable[LECHO].v_access &= ~CHANGED;
HD = boolean(value(LECHO));
}
if (vtable[PARITY].v_access&CHANGED) {
vtable[PARITY].v_access &= ~CHANGED;
setparity();
}
}
/*
* Turn tandem mode on or off for remote tty.
*/
tandem(option)
char *option;
{
struct sgttyb rmtty;
ioctl(FD, TIOCGETP, &rmtty);
if (strcmp(option,"on") == 0) {
rmtty.sg_flags |= TANDEM;
arg.sg_flags |= TANDEM;
} else {
rmtty.sg_flags &= ~TANDEM;
arg.sg_flags &= ~TANDEM;
}
ioctl(FD, TIOCSETP, &rmtty);
ioctl(0, TIOCSETP, &arg);
}
/*
* Send a break.
*/
genbrk()
{
ioctl(FD, TIOCSBRK, NULL);
sleep(1);
ioctl(FD, TIOCCBRK, NULL);
}
/*
* Suspend tip
*/
suspend(c)
char c;
{
unraw();
kill(c == CTRL(y) ? getpid() : 0, SIGTSTP);
raw();
}
/*
* expand a file name if it includes shell meta characters
*/
char *
expand(name)
char name[];
{
static char xname[BUFSIZ];
char cmdbuf[BUFSIZ];
register int pid, l, rc;
register char *cp, *Shell;
int s, pivec[2], (*sigint)();
if (!anyof(name, "~{[*?$`'\"\\"))
return(name);
/* sigint = signal(SIGINT, SIG_IGN); */
if (pipe(pivec) < 0) {
perror("pipe");
/* signal(SIGINT, sigint) */
return(name);
}
sprintf(cmdbuf, "echo %s", name);
if ((pid = vfork()) == 0) {
Shell = value(SHELL);
if (Shell == NOSTR)
Shell = "/bin/sh";
close(pivec[0]);
close(1);
dup(pivec[1]);
close(pivec[1]);
close(2);
execl(Shell, Shell, "-c", cmdbuf, 0);
_exit(1);
}
if (pid == -1) {
perror("fork");
close(pivec[0]);
close(pivec[1]);
return(NOSTR);
}
close(pivec[1]);
l = read(pivec[0], xname, BUFSIZ);
close(pivec[0]);
while (wait(&s) != pid);
;
s &= 0377;
if (s != 0 && s != SIGPIPE) {
fprintf(stderr, "\"Echo\" failed\n");
return(NOSTR);
}
if (l < 0) {
perror("read");
return(NOSTR);
}
if (l == 0) {
fprintf(stderr, "\"%s\": No match\n", name);
return(NOSTR);
}
if (l == BUFSIZ) {
fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name);
return(NOSTR);
}
xname[l] = 0;
for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
;
*++cp = '\0';
return(xname);
}
/*
* Are any of the characters in the two strings the same?
*/
anyof(s1, s2)
register char *s1, *s2;
{
register int c;
while (c = *s1++)
if (any(c, s2))
return(1);
return(0);
}